Some standard content:
Machinery Industry Standard of the People's Republic of China
JB/T7220—94
Scraper Discharge Centrifuge
Published on 1994-07-18
Ministry of Machinery Industry of the People's Republic of China
Implemented on 1995-07-01
Machinery Industry Standard of the People's Republic of China
Scraper Discharge Centrifuge
Subject Content and Scope of Application
JB/T7220—94||tt| |JB446-83
JB3202-83
This standard specifies the types and basic parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of scraper discharge centrifuges (hereinafter referred to as centrifuges). This standard applies to scraper discharge centrifuges. 2 Reference standards
GB1220
GB2100
GB3077
GB3274
GB/T 3280
GB3766
GB4237
GB4334
GB5226
GB6654
GB/T 7659
GB7779
GB7935
GB9239
GB9439
GB10901
GB11352www.bzxz.net
GB/T13306
GB/T13384
JB4385
JB/T6418
JB/T7217
ZBJ77002
Steel Pressure Vessels
Packaging, Storage and Transportation Pictorial Marking
Technical Conditions for High-quality Carbon Structural Steel|| tt||Stainless steel bars
Technical conditions for stainless acid-resistant steel castings
Technical conditions for alloy structural steels
Hot-rolled thick steel plates and strips of carbon cable structural steel and low-alloy structural steels Cold-rolled stainless steel plates
General technical conditions for hydraulic systems
Hot-rolled stainless steel plates
Test methods for corrosion resistance of stainless steel
General technical conditions for machine tools and electrical equipment
Carbon steel and low-alloy steel thick steel plates for pressure vessels Carbon steel castings for welded structures
Model compilation method for centrifuges
General technical conditions for hydraulic components
Rigid transfer Sub-balance quality
Determination of allowable unbalance
Gray iron castings
Test methods for centrifuge performance
Casting carbon steel parts for general engineering
General technical conditions for packaging of electromechanical products
General technical conditions for forgings made of hammer
Method for determining the clarity of separation machinery
General technical conditions for coating of separation machinery products Technical specifications for conventional non-destructive testing of centrifuge and separator forgings Approved by the Ministry of Machinery Industry on July 18, 1994
Implemented on July 1, 1995
3 Types and basic parameters||tt| |3.1 Structural type
JB/T7220--94
Scraper discharge centrifuges are divided into the following three types according to their working principles. 3.1.1 Filtration type
GK type---wide scraper discharge filtration type centrifuge, see Figure 1a.
GZ type--narrow scraper discharge filtration type centrifuge. See Figure 2, b.
3.1.2 Sedimentation type
GKC type
wide scraper discharge sedimentation type centrifuge, see Figure 3, 3.1.3 Siphon filtration type
GKH type
wide scraper discharge siphon filtration type centrifuge, see Figure 4. Figure 1 GK type wide scraper discharge filter centrifuge Figure 22 type narrow moon discharge filter centrifuge 3.2 Basic parameters
JB/T7220-94
Figure 3 GKC type wide scraper discharge sedimentation centrifuge Figure 4 GKH type wide scraper discharge siphon filter centrifuge The basic parameters of the scraper discharge centrifuge shall comply with the provisions of Table 1. 3.3 Model representation method
The model compilation method of the centrifuge shall comply with the provisions of GB7779. Model
First Series
Second Series
JB/T.722094
Length L
Effective Passenger Volume V
Speed Range N...
2000~3000
1600~2840
1250~2400
10001900
800~1520
650~1250
630~1220
500~~959
450 ~830
466)~720
Separation factor
896~2015
644~2030
550~2036
4+7~1615
357~1290
284~[056
277-1040
224810
204~695
179~580
4 Technical requirements
4.1 Basic requirements
JB/T 722094
Centrifuges shall comply with the provisions of this standard and be manufactured according to the drawings and technical documents approved through the prescribed procedures. 4.2 Environmental requirements
The centrifuge should be able to work normally under the condition of ambient temperature of 0-40℃ and relative air humidity of no more than 85%. 4.3 Technical performance
4.3.1 The drum speed should not be less than 97% of the rated speed (except when unloading). 4.3.2 The vibration intensity during idling should not be greater than 11.2. 4.3.3 Under idling conditions, the noise (sound power level) should not be greater than 105dB (A). 4.3.4 The temperature rise of the main bearing should not be greater than 30℃ during idling. It should not be greater than 40C during load operation. 4.3.5 The oil temperature of the oil tank should not be greater than 50℃.
4.3.6 It can run stably and automatically, and the number of cycles meets the design requirements. When there is no regulation, the idling operation should be guaranteed to be no less than 40 times within 2 hours.
4.3.7 The production capacity and separation effect of the centrifuge should meet the design requirements. 4.3.8 The cleanliness of the hydraulic system of the centrifuge should not be greater than 40mg/L. 4.3.9 The average trouble-free working time of the centrifuge should be no less than 8000h. 4.4 Structural requirements
The structure of the filter-type centrifuge drum should enable the filter (cloth) to be flat and reliably fixed on the drum without wrinkling or bulging.
The threaded connection structure should ensure reliable operation under vibration load conditions. 4.4.2
Each sealing point should have a reliable sealing device. 4.4.3
4.4.4 Drilling is generally not allowed in the weld area of the drum wall. 4.4.5 The centrifuge should have a processing plane to check the installation level of the machine. 4.4.6 The centrifuge should have a lifting device suitable for overall lifting. 4.4.7 The centrifuge should consider shock absorption measures and seismic isolation installation. 4.5 Safety requirements
4.5.1 Durable drum rotation direction indicator marks should be fixed at obvious locations of the centrifuge. 4.5.2 Exposed rotating parts should have protective devices. 4.5.3 The brake device of the centrifuge should be interlocked with the impact motor, and the power supply of the main motor must be cut off before braking. 4.5.4 The electrical control box and the motor must be reliably grounded: 4.6 Material requirements
4.6.1 The materials of the main parts and components of the centrifuge should comply with the following regulations and should have a material quality certificate. 4.6.1.1 Cast iron parts should comply with the provisions of GB9439. 4.6.1.2 Cast carbon steel parts should comply with the provisions of GB11352, and cast carbon steel parts for welding should comply with the provisions of GB7659. 4.6.1.3 Cast stainless steel parts should comply with the provisions of GB2100. 4.6.1.4
Plates for welded parts
Carbon steel and low alloy steel plates shall comply with the provisions of GB3274 and GB6654. Stainless steel plates shall comply with the provisions of GB3280 and GB4237. 4.6.1.5Shaft parts
Carbon steel shall comply with the provisions of GB699.
Alloy steel shall comply with the provisions of GB3077.
Stainless steel shall comply with the provisions of GB1220.
JB/T7220-94
4.6.2For centrifuges used in the food industry, the materials of parts in contact with materials shall comply with the relevant national food hygiene requirements. 4.6.3Substitution of materials with similar or better performance is permitted, but must be approved by the design department of the manufacturer. 4.7 Process requirements
4.7.1 Rotating drum
4.7.1.1 The welding of the rotating drum must be performed by a welder holding a welder qualification certificate of the corresponding category issued by the labor department. 4.7.1.2 The number of repairs on the same part of the weld should generally not exceed two times. If it exceeds two times, the repair should be approved by the technical person in charge of the manufacturing unit before repair.
4.7.1.3 The weld must be inspected by X-ray flaw detection and should comply with the provisions of ZBJ77002. 4.7.1.4 The welded drum must be stress-relieved. For the welds of austenitic stainless steel drums with intergranular corrosion resistance requirements, measures must be taken to prevent or eliminate intergranular corrosion, and the intergranular corrosion test should comply with the provisions of GB4334. 4.7.1.5 The mechanical properties of the drum weld should not be lower than the parent material. 4.7.2 Spindle
4.7.2.1 Forgings should comply with the provisions of JB4385, and the grade should not be lower than Grade V. 4.7.2.2 It must be normalized or quenched and tempered, and inspected by non-destructive testing, and should comply with the provisions of ZBJ77002. 4.7.3 Important welded parts or castings such as machine base, bearing seat, door cover, etc. shall be stress-relieved. 4.7.4 Austenitic stainless steel castings or forgings shall be solution treated. 4.7.5 When the wheel and the main shaft are matched with the surface, the matching surface shall be evenly fitted, and the fitting rate shall be not less than 65% over the entire length and circumference of the main line, and the fitting rate shall be not less than 70% over the circumference within 1/4 of the entire axial length of the large end, or there shall be not less than four contact points within an area of 25mm×25mm.
4.7.6 Dynamic balancing of drum components
4.7.6.1 The drum components shall be dynamically balanced, and the balancing quality grade shall not be lower than G6.3. The determination of the allowable unbalance U shall comply with the provisions of GB9239.
4.7.6.2 The drum with rubber lining or plastic coating on the surface shall be dynamically balanced before and after rubber lining or coating. The material of the dynamic balancing weight should be the same as the parent metal, and the weight should be firmly fixed and can be pulled. 4.7.6.3
4. 7. 6. 4
The total correction mass of the dynamic balance should not be greater than 1/1500 of the mass of the drum components. After the drum is assembled, the radial and end face runout of its outer end shall not be greater than 0.0003D (D is the inner diameter of the drum). 4.7.7
4.7.8 After the scraper, tooth, etc. are assembled, the minimum clearance between the screen (or filter cloth), pressure chart (or child plate) and the drum shall not be less than 3nmm. 4. 7. 9
Hydraulic system
The hydraulic system shall comply with the provisions of GB3766. 4.7.9.1
4.7.9.2The hydraulic components shall comply with the provisions of GB7935. 4.8 Electrical control equipment
Electrical control equipment should meet the requirements of the use environment and comply with the provisions of G135226. 4.9 Centrifuge operation test time
4.9.1 The centrifuge idle operation test is carried out at the rated speed, and the cycle automatic operation must be no less than 2h. The centrifuge load operation test is carried out under rated working conditions, and the automatic operation must be no less than 6h. 4.9.2
4.10 Appearance quality
The surface of the stainless steel casing of the centrifuge should be passivated or polished, and there should be no obvious hammer marks and scratches. 4.10.2 The painting of the centrifuge should comply with the provisions of JB/T7217. 5 Test method
5.1 The performance test method of the drum weld test plate should comply with the provisions of Appendix G of GB150. 5.2 The test method for intergranular corrosion of austenitic stainless steel shall comply with the provisions of (B4334. 5.3 The method for determining the clarity of the hydraulic system shall comply with the provisions of JB/T64186
JB/T7220-94
5.4 The performance test method of the centrifuge shall comply with the provisions of GB10901. 6. Inspection rules
6.1 Basic requirements
The centrifuge shall be inspected and qualified by the quality inspection department of the manufacturer according to this standard, and the product quality certificate shall be issued before it can be shipped! 6.2 Inspection classification
Product inspection is divided into factory inspection Inspection and type inspection. 6.3 Factory inspection
Each product must undergo factory inspection before leaving the factory. The factory inspection includes document checking, appearance quality inspection and idling test. Check the following documents:
Material quality certificate of main parts;
Non-destructive testing report of drum and main shaft;
Mechanical property test report of drum weld test plate;
Dynamic balancing test report of drum components;
Certificate of main purchased parts and accessories; Heat treatment report of main parts and components. | |tt||Appearance quality inspection
The appearance quality of the centrifuge shall comply with the provisions of Article 4.10.1 and Article 4.10.2. 6.3.4
Idle running test
The test items of the idle running test shall be in accordance with the provisions of Table 2. 6.4 Type inspection
Type inspection shall be carried out in any of the following situations: Trial production and identification of new products or old products transferred to the factory for production; After formal production, if there are major changes in structure, materials, and processes that may affect product performance; When the national quality supervision agency proposes the requirement for type inspection. Type inspection of products , including factory inspection, load operation test and assessment of mean trouble-free working time. 6.4.2
6.4.3 Load operation test
The test items of load operation test shall be in accordance with the provisions of Table 2. Table 2
Test items
Drum rotation
Vibration intensity
Main bearing temperature rise
Oil and wine sleeve wetness
Number of cycles
Production capacity
Separation effect
Hydraulic system cleanliness
Technical requirements clauses
4.3. 4
Test method clause
Note: ①△ indicates that the test should be carried out, indicating that it is only tested during type inspection, no-load operation test
Load operation test
②Load operation test can be carried out in the user factory. 7 Marking, packaging, transportation and storage
7.1 Marking
JB/T7220-94
Each product should be fixed with a durable product label in a conspicuous position. The label should comply with the provisions of GB/T13306. The following content should be marked on the label:
a. Model and name of the centrifuge:
b. Main technical parameters, inner diameter of the drum, mm: effective volume of the drum, L: maximum allowable loading. kg; drum speed. r/min: main motor power, kW, centrifuge mass, kg: manufacturing date:
factory number:
manufacturer name.
7.2 Packaging
The packaging of the centrifuge for export shall comply with the provisions of GB/T13384. 7.2.2
The packaging of the centrifuge sold incorrectly in China shall comply with the provisions of GB/T13384, and the outer marking of the centrifuge packaging box shall comply with the provisions of GB191. The exposed processing surfaces of the accessories, spare parts, tools and main machine of the centrifuge that may be subject to atmospheric erosion shall be treated with anti-rust treatment before packaging. The following documents shall be carried with the centrifuge when it leaves the factory: Packing list:
Product certificate:
Product manual:
List of random equipment and accessories;
Installation diagram (when there is no installation requirement in the product manual): other relevant technical information.
7.3 Transportation
The centrifuge shall not be rolled or inverted during transportation. 7.4 Storage
The centrifuge should be placed in a sheltered place with a relative humidity not exceeding 85%, a temperature not exceeding 40°C, and no medium corrosion. 8 Warranty period
If the user complies with the storage, installation and operation provisions of the product manual, the manufacturer shall be responsible for free repair or replacement (excluding wearing parts) if the centrifuge is damaged or cannot work due to poor manufacturing quality within one year from the date of shipment from the manufacturer. 9 Others
9.1 Centrifuges made of sealed glue, plastic coating or other non-metallic materials, titanium alloys and other corrosion-resistant materials must also comply with their corresponding relevant standards.
9.2 Centrifuges with special requirements such as closed, pressurized, explosion-proof, and anti-toxic must also comply with their special standards. Additional notes:
This standard was proposed by the National Technical Committee for Separation Machinery Standardization. This standard is under the jurisdiction of the Hefei General Machinery Research Institute of the Ministry of Machinery Industry. This standard was drafted by Shanghai Chemical Machinery Factory, and this standard mainly involved Senren Shi Nianyao3 Important welded parts or castings such as machine base, bearing seat, door cover, etc. shall be stress-relieved. 4.7.4 Austenitic stainless steel castings or forgings shall be solution treated. 4.7.5 When the wheel and the main shaft are matched with the surface, the matching surface shall be evenly fitted, and the fitting rate shall be not less than 65% over the entire length and circumference of the main line, and the fitting rate shall be not less than 70% over the circumference within 1/4 of the entire axial length of the large end, or there shall be not less than four contact points within an area of 25mm×25mm.
4.7.6 Dynamic balancing of drum components
4.7.6.1 Drum components shall be dynamically balanced, and their balancing quality grade shall not be lower than G6.3. The determination of the allowable unbalance U shall comply with the provisions of GB9239.
4.7.6.2 Drums with rubber lining or plastic coating on the surface shall be dynamically balanced before and after rubber lining or coating. The material of the dynamic balancing weight should be the same as the parent metal, and the weight should be firmly fixed and can be pulled. 4.7.6.3
4. 7. 6. 4
The total correction mass of the dynamic balance should not be greater than 1/1500 of the mass of the drum components. After the drum is assembled, the radial and end face runout of its outer end shall not be greater than 0.0003D (D is the inner diameter of the drum). 4.7.7
4.7.8 After the scraper, tooth, etc. are assembled, the minimum clearance between the screen (or filter cloth), pressure chart (or child plate) and the drum shall not be less than 3nmm. 4. 7. 9
Hydraulic system
The hydraulic system shall comply with the provisions of GB3766. 4.7.9.1
4.7.9.2The hydraulic components shall comply with the provisions of GB7935. 4.8 Electrical control equipment
Electrical control equipment should meet the requirements of the use environment and comply with the provisions of G135226. 4.9 Centrifuge operation test time
4.9.1 The centrifuge idle operation test is carried out at the rated speed, and the cycle automatic operation must be no less than 2h. The centrifuge load operation test is carried out under rated working conditions, and the automatic operation must be no less than 6h. 4.9.2
4.10 Appearance quality
The surface of the stainless steel casing of the centrifuge should be passivated or polished, and there should be no obvious hammer marks and scratches. 4.10.2 The painting of the centrifuge should comply with the provisions of JB/T7217. 5 Test method
5.1 The performance test method of the drum weld test plate should comply with the provisions of Appendix G of GB150. 5.2 The test method for intergranular corrosion of austenitic stainless steel shall comply with the provisions of (B4334. 5.3 The method for determining the clarity of the hydraulic system shall comply with the provisions of JB/T64186
JB/T7220-94
5.4 The performance test method of the centrifuge shall comply with the provisions of GB10901. 6. Inspection rules
6.1 Basic requirements
The centrifuge shall be inspected and qualified by the quality inspection department of the manufacturer according to this standard, and the product quality certificate shall be issued before it can be shipped! 6.2 Inspection classification
Product inspection is divided into factory inspection and delivery Inspection and type inspection. 6.3 Factory inspection
Each product must undergo factory inspection before leaving the factory. The factory inspection includes document checking, appearance quality inspection and idling test. Check the following documents:
Material quality certificate of main parts;
Non-destructive testing report of drum and main shaft;
Mechanical property test report of drum weld test plate;
Dynamic balancing test report of drum components;
Certificate of main purchased parts and accessories; Heat treatment report of main parts and components. | |tt||Appearance quality inspection
The appearance quality of the centrifuge shall comply with the provisions of Article 4.10.1 and Article 4.10.2. 6.3.4
Idle running test
The test items of the idle running test shall be in accordance with the provisions of Table 2. 6.4 Type inspection
Type inspection shall be carried out in any of the following situations: Trial production and identification of new products or old products transferred to the factory for production; After formal production, if there are major changes in structure, materials, and processes that may affect product performance; When the national quality supervision agency proposes the requirement for type inspection. Type inspection of products , including factory inspection, load operation test and assessment of mean trouble-free working time. 6.4.2
6.4.3 Load operation test
The test items of load operation test shall be in accordance with the provisions of Table 2. Table 2
Test items
Drum rotation
Vibration intensity
Main bearing temperature rise
Oil and wine sleeve wetness
Number of cycles
Production capacity
Separation effect
Hydraulic system cleanliness
Technical requirements clauses
4.3. 4
Test method clause
Note: ①△ indicates that the test should be carried out, indicating that it is only tested during type inspection, no-load operation test
Load operation test
②Load operation test can be carried out in the user factory. 7 Marking, packaging, transportation and storage
7.1 Marking
JB/T7220-94
Each product should be fixed with a durable product label in a conspicuous position. The label should comply with the provisions of GB/T13306. The following content should be marked on the label:
a. Model and name of the centrifuge:
b. Main technical parameters, inner diameter of the drum, mm: effective volume of the drum, L: maximum allowable loading. kg; drum speed. r/min: main motor power, kW, centrifuge mass, kg: manufacturing date:
factory number:
manufacturer name.
7.2 Packaging
The packaging of the exported centrifuge shall comply with the provisions of GB/T13384. 7.2.2
The packaging of the centrifuge sold incorrectly in China shall comply with the provisions of GB/T13384, and the outer marking of the centrifuge packaging box shall comply with the provisions of GB191. The exposed processing surfaces of the accessories, spare parts, tools and main machine of the centrifuge that may be subject to atmospheric erosion shall be treated with anti-rust treatment before packaging. The following documents shall be carried with the centrifuge when it leaves the factory: Packing list:
Product certificate:
Product manual:
List of random equipment and accessories;
Installation diagram (when there is no installation requirement in the product manual): other relevant technical information.
7.3 Transportation
The centrifuge shall not be rolled or inverted during transportation. 7.4 Storage
The centrifuge should be placed in a sheltered place with a relative humidity not exceeding 85%, a temperature not exceeding 40°C and no medium corrosion. 8 Warranty period
If the user complies with the storage, installation and operation provisions of the product manual, the manufacturer shall be responsible for free repair or replacement (excluding wearing parts) if the centrifuge is damaged or fails to work due to poor manufacturing quality within one year from the date of shipment from the manufacturer. 9 Others
9.1 Centrifuges made of sealed glue, plastic coating or other non-metallic materials, titanium alloys and other corrosion-resistant materials must also comply with their corresponding relevant standards.
9.2 Centrifuges with special requirements such as closed, pressurized, explosion-proof, and anti-toxic must also comply with their special standards. Additional notes:
This standard was proposed by the National Technical Committee for Separation Machinery Standardization. This standard is under the jurisdiction of the Hefei General Machinery Research Institute of the Ministry of Machinery Industry. This standard was drafted by Shanghai Chemical Machinery Factory, and this standard mainly involved Senren Shi Nianyao3 Important welded parts or castings such as machine base, bearing seat, door cover, etc. shall be subjected to stress relief treatment. 4.7.4 Austenitic stainless steel castings or forgings shall be subjected to solid solution treatment. 4.7.5 When the wheel and the main shaft are matched with the surface, the matching surface shall be evenly fitted, and the fitting rate shall be not less than 65% over the entire length and circumference of the main line, and the fitting rate shall be not less than 70% over the circumference within 1/4 of the entire axial length of the large end, or there shall be not less than four contact points within an area of 25mm×25mm.
4.7.6 Dynamic balancing of drum components
4.7.6.1 Drum components shall be dynamically balanced, and their balancing quality grade shall not be lower than G6.3. The determination of the allowable unbalance U shall comply with the provisions of GB9239.
4.7.6.2 Drums with rubber lining or plastic coating on the surface shall be dynamically balanced before and after rubber lining or coating. The material of the dynamic balancing weight should be the same as the parent metal, and the weight should be firmly fixed and can be pulled. 4.7.6.3
4. 7. 6. 4
The total correction mass of the dynamic balance should not be greater than 1/1500 of the mass of the drum components. After the drum is assembled, the radial and end face runout of its outer end shall not be greater than 0.0003D (D is the inner diameter of the drum). 4.7.7
4.7.8 After the scraper, tooth, etc. are assembled, the minimum clearance between the screen (or filter cloth), pressure chart (or child plate) and the drum shall not be less than 3nmm. 4. 7. 9
Hydraulic system
The hydraulic system shall comply with the provisions of GB3766. 4.7.9.1
4.7.9.2The hydraulic components shall comply with the provisions of GB7935. 4.8 Electrical control equipment
Electrical control equipment should meet the requirements of the use environment and comply with the provisions of G135226. 4.9 Centrifuge operation test time
4.9.1 The centrifuge idle operation test is carried out at the rated speed, and the cycle automatic operation must be no less than 2h. The centrifuge load operation test is carried out under rated working conditions, and the automatic operation must be no less than 6h. 4.9.2
4.10 Appearance quality
The surface of the stainless steel casing of the centrifuge should be passivated or polished, and there should be no obvious hammer marks and scratches. 4.10.2 The painting of the centrifuge should comply with the provisions of JB/T7217. 5 Test method
5.1 The performance test method of the drum weld test plate should comply with the provisions of Appendix G of GB150. 5.2 The test method for intergranular corrosion of austenitic stainless steel shall comply with the provisions of (B4334. 5.3 The method for determining the clarity of the hydraulic system shall comply with the provisions of JB/T64186
JB/T7220-94
5.4 The performance test method of the centrifuge shall comply with the provisions of GB10901. 6. Inspection rules
6.1 Basic requirements
The centrifuge shall be inspected and qualified by the quality inspection department of the manufacturer according to this standard, and the product quality certificate shall be issued before it can be shipped! 6.2 Inspection classification
Product inspection is divided into factory inspection Inspection and type inspection. 6.3 Factory inspection
Each product must undergo factory inspection before leaving the factory. The factory inspection includes document checking, appearance quality inspection and idling test. Check the following documents:
Material quality certificate of main parts;
Non-destructive testing report of drum and main shaft;
Mechanical property test report of drum weld test plate;
Dynamic balancing test report of drum components;
Certificate of main purchased parts and accessories; Heat treatment report of main parts and components. | |tt||Appearance quality inspection
The appearance quality of the centrifuge shall comply with the provisions of Article 4.10.1 and Article 4.10.2. 6.3.4
Idle running test
The test items of the idle running test shall be in accordance with the provisions of Table 2. 6.4 Type inspection
Type inspection shall be carried out in any of the following situations: Trial production and identification of new products or old products transferred to the factory for production; After formal production, if there are major changes in structure, materials, and processes that may affect product performance; When the national quality supervision agency proposes the requirement for type inspection. Type inspection of products , including factory inspection, load operation test and assessment of mean trouble-free working time. 6.4.2
6.4.3 Load operation test
The test items of load operation test shall be in accordance with the provisions of Table 2. Table 2
Test items
Drum rotation
Vibration intensity
Main bearing temperature rise
Oil and wine sleeve wetness
Number of cycles
Production capacity
Separation effect
Hydraulic system cleanliness
Technical requirements clauses
4.3. 4
Test method clause
Note: ①△ indicates that the test should be carried out, indicating that it is only tested during type inspection, no-load operation test
Load operation test
②Load operation test can be carried out in the user factory. 7 Marking, packaging, transportation and storage
7.1 Marking
JB/T7220-94
Each product should be fixed with a durable product label in a conspicuous position. The label should comply with the provisions of GB/T13306. The following content should be marked on the label:
a. Model and name of the centrifuge:
b. Main technical parameters, inner diameter of the drum, mm: effective volume of the drum, L: maximum allowable loading. kg; drum speed. r/min: main motor power, kW, centrifuge mass, kg: manufacturing date:
factory number:
manufacturer name.
7.2 Packaging
The packaging of the centrifuge for export shall comply with the provisions of GB/T13384. 7.2.2
The packaging of the centrifuge sold incorrectly in China shall comply with the provisions of GB/T13384, and the outer marking of the centrifuge packaging box shall comply with the provisions of GB191. The exposed processing surfaces of the accessories, spare parts, tools and main machine of the centrifuge that may be subject to atmospheric erosion shall be treated with anti-rust treatment before packaging. The following documents shall be carried with the centrifuge when it leaves the factory: Packing list:
Product certificate:
Product manual:
List of random equipment and accessories;
Installation diagram (when there is no installation requirement in the product manual): other relevant technical information.
7.3 Transportation
The centrifuge shall not be rolled or inverted during transportation. 7.4 Storage
The centrifuge should be placed in a sheltered place with a relative humidity not exceeding 85%, a temperature not exceeding 40°C, and no medium corrosion. 8 Warranty period
If the user complies with the storage, installation and operation provisions of the product manual, the manufacturer shall be responsible for free repair or replacement (excluding wearing parts) if the centrifuge is damaged or cannot work due to poor manufacturing quality within one year from the date of shipment from the manufacturer. 9 Others
9.1 Centrifuges made of sealed glue, plastic coating or other non-metallic materials, titanium alloys and other corrosion-resistant materials must also comply with their corresponding relevant standards.
9.2 Centrifuges with special requirements such as closed, pressurized, explosion-proof, and anti-toxic must also comply with their special standards. Additional notes:
This standard was proposed by the National Technical Committee for Separation Machinery Standardization. This standard is under the jurisdiction of the Hefei General Machinery Research Institute of the Ministry of Machinery Industry. This standard was drafted by Shanghai Chemical Machinery Factory, and this standard mainly involved Senren Shi Nianyao8 Electrical control equipment
Electrical control equipment should meet the requirements of the use environment and comply with the provisions of G135226. 4.9 Time of centrifuge operation test
4.9.1 The centrifuge idle operation test is carried out at the rated speed, and the cycle automatic operation must be no less than 2h. The centrifuge load operation test is carried out under rated working conditions, and the automatic operation must be no less than 6h. 4.9.2
4.10 Appearance quality
The surface of the stainless steel casing of the centrifuge should be passivated or polished, and there should be no obvious hammer marks and scratches. 4.10.2 The painting of the centrifuge should comply with the provisions of JB/T7217. 5 Test method
5.1 The performance test method of the drum weld test plate should comply with the provisions of Appendix G of GB150. 5.2 The test method for intergranular corrosion of austenitic stainless steel shall comply with the provisions of (B4334. 5.3 The method for determining the clarity of the hydraulic system shall comply with the provisions of JB/T64186
JB/T7220-94
5.4 The performance test method of the centrifuge shall comply with the provisions of GB10901. 6. Inspection rules
6.1 Basic requirements
The centrifuge shall be inspected and qualified by the quality inspection department of the manufacturer according to this standard, and the product quality certificate shall be issued before it can be shipped! 6.2 Inspection classification
Product inspection is divided into factory inspection Inspection and type inspection. 6.3 Factory inspection
Each product must undergo factory inspection before leaving the factory. The factory inspection includes document checking, appearance quality inspection and idling test. Check the following documents:
Material quality certificate of main parts;
Non-destructive testing report of drum and main shaft;
Mechanical property test report of drum weld test plate;
Dynamic balancing test report of drum components;
Certificate of main purchased parts and accessories; Heat treatment report of main parts and components. | |tt||Appearance quality inspection
The appearance quality of the centrifuge shall comply with the provisions of Article 4.10.1 and Article 4.10.2. 6.3.4
Idle running test
The test items of the idle running test shall be in accordance with the provisions of Table 2. 6.4 Type inspection
Type inspection shall be carried out in any of the following situations: Trial production and identification of new products or old products transferred to the factory for production; After formal production, if there are major changes in structure, materials, and processes that may affect product performance; When the national quality supervision agency proposes the requirement for type inspection. Type inspection of products , including factory inspection, load operation test and assessment of mean trouble-free working time. 6.4.2
6.4.3 Load operation test
The test items of load operation test shall be in accordance with the provisions of Table 2. Table 2
Test items
Drum rotation
Vibration intensity
Main bearing temperature rise
Oil and wine sleeve wetness
Number of cycles
Production capacity
Separation effect
Hydraulic system cleanliness
Technical requirements clauses
4.3. 4
Test method clause
Note: ①△ indicates that the test should be carried out, indicating that it is only tested during type inspection, no-load operation test
Load operation test
②Load operation test can be carried out in the user factory. 7 Marking, packaging, transportation and storage
7.1 Marking
JB/T7220-94
Each product should be fixed with a durable product label in a conspicuous position. The label should comply with the provisions of GB/T13306. The following content should be marked on the label:
a. Model and name of the centrifuge:
b. Main technical parameters, inner diameter of the drum, mm: effective volume of the drum, L: maximum allowable loading. kg; drum speed. r/min: main motor power, kW, centrifuge mass, kg: manufacturing date:
factory number:
manufacturer name.
7.2 Packaging
The packaging of the centrifuge for export shall comply with the provisions of GB/T13384. 7.2.2
The packaging of the centrifuge sold incorrectly in China shall comply with the provisions of GB/T13384, and the outer marking of the centrifuge packaging box shall comply with the provisions of GB191. The exposed processing surfaces of the accessories, spare parts, tools and main machine of the centrifuge that may be subject to atmospheric erosion shall be treated with anti-rust treatment before packaging. The following documents shall be carried with the centrifuge when it leaves the factory: Packing list:
Product certificate:
Product manual:
List of random equipment and accessories;
Installation diagram (when there is no installation requirement in the product manual): other relevant technical information.
7.3 Transportation
The centrifuge shall not be rolled or inverted during transportation. 7.4 Storage
The centrifuge should be placed in a sheltered place with a relative humidity not exceeding 85%, a temperature not exceeding 40°C, and no medium corrosion. 8 Warranty period
If the user complies with the storage, installation and operation provisions of the product manual, the manufacturer shall be responsible for free repair or replacement (excluding wearing parts) if the centrifuge is damaged or cannot work due to poor manufacturing quality within one year from the date of shipment from the manufacturer. 9 Others
9.1 Centrifuges made of sealed glue, plastic coating or other non-metallic materials, titanium alloys and other corrosion-resistant materials must also comply with their corresponding relevant standards.
9.2 Centrifuges with special requirements such as closed, pressurized, explosion-proof, and anti-toxic must also comply with their special standards. Additional notes:
This standard was proposed by the National Technical Committee for Separation Machinery Standardization. This standard is under the jurisdiction of the Hefei General Machinery Research Institute of the Ministry of Machinery Industry. This standard was drafted by Shanghai Chemical Machinery Factory, and this standard mainly involved Senren Shi Nianyao8 Electrical control equipment
Electrical control equipment should meet the requirements of the use environment and comply with the provisions of G135226. 4.9 Time of centrifuge operation test
4.9.1 The centrifuge idle operation test is carried out at the rated speed, and the cycle automatic operation must be no less than 2h. The centrifuge load operation test is carried out under rated working conditions, and the automatic operation must be no less than 6h. 4.9.2
4.10 Appearance quality
The surface of the stainless steel casing of the centrifuge should be passivated or polished, and there should be no obvious hammer marks and scratches. 4.10.2 The painting of the centrifuge should comply with the provisions of JB/T7217. 5 Test method
5.1 The performance test method of the drum weld test plate should comply with the provisions of Appendix G of GB150. 5.2 The test method for intergranular corrosion of austenitic stainless steel shall comply with the provisions of (B4334. 5.3 The method for determining the clarity of the hydraulic system shall comply with the provisions of JB/T64186
JB/T7220-94
5.4 The performance test method of the centrifuge shall comply with the provisions of GB10901. 6. Inspection rules
6.1 Basic requirements
The centrifuge shall be inspected and qualified by the quality inspection department of the manufacturer according to this standard, and the product quality certificate shall be issued before it can be shipped! 6.2 Inspection classification
Product inspection is divided into factory inspection and delivery Inspection and type inspection. 6.3 Factory inspection
Each product must undergo factory inspection before leaving the factory. The factory inspection includes document checking, appearance quality inspection and idling test. Check the following documents:
Material quality certificate of main parts;
Non-destructive testing report of drum and main shaft;
Mechanical property test report of drum weld test plate;
Dynamic balancing test report of drum components;
Certificate of main purchased parts and accessories; Heat treatment report of main parts and components. | |tt||Appearance quality inspection
The appearance quality of the centrifuge shall comply with the provisions of Article 4.10.1 and Article 4.10.2. 6.3.4
Idle running test
The test items of the idle running test shall be in accordance with the provisions of Table 2. 6.4 Type inspection
Type inspection shall be carried out in any of the following situations: Trial production and identification of new products or old products transferred to the factory for production; After formal production, if there are major changes in structure, materials, and processes that may affect product performance; When the national quality supervision agency proposes the requirement for type inspection. Type inspection of products , including factory inspection, load operation test and assessment of mean trouble-free working time. 6.4.2
6.4.3 Load operation test
The test items of load operation test shall be in accordance with the provisions of Table 2. Table 2
Test items
Drum rotation
Vibration intensity
Main bearing temperature rise
Oil and wine sleeve wetness
Number of cycles
Production capacity
Separation effect
Hydraulic system cleanliness
Technical requirements clauses
4.3. 4
Test method clause
Note: ①△ indicates that the test should be carried out, indicating that it is only tested during type inspection, no-load operation test
Load operation test
②Load operation test can be carried out in the user factory. 7 Marking, packaging, transportation and storage
7.1 Marking
JB/T7220-94
Each product should be fixed with a durable product label in a conspicuous position. The label should comply with the provisions of GB/T13306. The following content should be marked on the label:
a. Model and name of the centrifuge:
b. Main technical parameters, inner diameter of the drum, mm: effective volume of the drum, L: maximum allowable loading. kg; drum speed. r/min: main motor power, kW, centrifuge mass, kg: manufacturing date:
factory number:
manufacturer name.
7.2 Packaging
The packaging of the exported centrifuge shall comply with the provisions of GB/T13384. 7.2.2
The packaging of the centrifuge sold incorrectly in China shall comply with the provisions of GB/T13384, and the outer marking of the centrifuge packaging box shall comply with the provisions of GB191. The exposed processing surfaces of the accessories, spare parts, tools and main machine of the centrifuge that may be subject to atmospheric erosion shall be treated with anti-rust treatment before packaging. The following documents shall be carried with the centrifuge when it leaves the factory: Packing list:
Product certificate:
Product manual:
List of random equipment and accessories;
Installation diagram (when there is no installation requirement in the product manual): other relevant technical information.
7.3 Transportation
The centrifuge shall not be rolled or inverted during transportation. 7.4 Storage
The centrifuge should be placed in a sheltered place with a relative humidity not exceeding 85%, a temperature not exceeding 40°C and no medium corrosion. 8 Warranty period
If the user complies with the storage, installation and operation provisions of the product manual, the manufacturer shall be responsible for free repair or replacement (excluding wearing parts) if the centrifuge is damaged or fails to work due to poor manufacturing quality within one year from the date of shipment from the manufacturer. 9 Others
9.1 Centrifuges made of sealed glue, plastic coating or other non-metallic materials, titanium alloys and other corrosion-resistant materials must also comply with their corresponding relevant standards.
9.2 Centrifuges with special requirements such as closed, pressurized, explosion-proof, and anti-toxic must also comply with their special standards. Additional notes:
This standard was proposed by the National Technical Committee for Separation Machinery Standardization. This standard is under the jurisdiction of the Hefei General Machinery Research Institute of the Ministry of Machinery Industry. This standard was drafted by Shanghai Chemical Machinery Factory, and this standard mainly involved Senren Shi Nianyao4
Test method clause
Note: ①△ indicates that the test should be carried out, indicating that it is only tested during type inspection, no-load operation test
Load operation test
②Load operation test can be carried out in the user factory. 7 Marking, packaging, transportation and storage
7.1 Marking
JB/T7220-94
Each product should be fixed with a durable product label in a conspicuous position. The label should comply with the provisions of GB/T13306. The following content should be marked on the label:
a. Model and name of the centrifuge:
b. Main technical parameters, inner diameter of the drum, mm: effective volume of the drum, L: maximum allowable loading. kg; drum speed. r/min: main motor power, kW, centrifuge mass, kg: manufacturing date:
factory number:
manufacturer name.
7.2 Packaging
The packaging of the exported centrifuge shall comply with the provisions of GB/T13384. 7.2.2
The packaging of the centrifuge sold incorrectly in China shall comply with the provisions of GB/T13384, and the outer marking of the centrifuge packaging box shall comply with the provisions of GB191. The exposed processing surfaces of the accessories, spare parts, tools and main machine of the centrifuge that may be subject to atmospheric erosion shall be treated with anti-rust treatment before packaging. The following documents shall be carried with the centrifuge when it leaves the factory: Packing list:
Product certificate:
Product manual:
List of random equipment and accessories;
Installation diagram (when there is no installation requirement in the product manual): other relevant technical information.
7.3 Transportation
The centrifuge shall not be rolled or inverted during transportation. 7.4 Storage
The centrifuge should be placed in a sheltered place with a relative humidity not exceeding 85%, a temperature not exceeding 40°C and no medium corrosion. 8 Warranty period
If the user complies with the storage, installation and operation provisions of the product manual, the manufacturer shall be responsible for free repair or replacement (excluding wearing parts) if the centrifuge is damaged or fails to work due to poor manufacturing quality within one year from the date of shipment from the manufacturer. 9 Others
9.1 Centrifuges made of sealed glue, plastic coating or other non-metallic materials, titanium alloys and other corrosion-resistant materials must also comply with their corresponding relevant standards.
9.2 Centrifuges with special requirements such as closed, pressurized, explosion-proof, and anti-toxic must also comply with their special standards. Additional notes:
This standard was proposed by the National Technical Committee for Separation Machinery Standardization. This standard is under the jurisdiction of the Hefei General Machinery Research Institute of the Ministry of Machinery Industry. This standard was drafted by Shanghai Chemical Machinery Factory, and this standard mainly involved Senren Shi Nianyao4
Test method clause
Note: ①△ indicates that the test should be carried out, indicating that it is only tested during type inspection, no-load operation test
Load operation test
②Load operation test can be carried out in the user factory. 7 Marking, packaging, transportation and storage
7.1 Marking
JB/T7220-94
Each product should be fixed with a durable product label in a conspicuous position. The label should comply with the provisions of GB/T13306. The following content should be marked on the label:
a. Model and name of the centrifuge:
b. Main technical parameters, inner diameter of the drum, mm: effective volume of the drum, L: maximum allowable loading. kg; drum speed. r/min: main motor power, kW, centrifuge mass, kg: manufacturing date:
factory number:
manufacturer name.
7.2 Packaging
The packaging of the exported centrifuge shall comply with the provisions of GB/T13384. 7.2.2
The packaging of the centrifuge sold incorrectly in China shall comply with the provisions of GB/T13384, and the outer marking of the centrifuge packaging box shall comply with the provisions of GB191. The exposed processing surfaces of the accessories, spare parts, tools and main machine of the centrifuge that may be subject to atmospheric erosion shall be treated with anti-rust treatment before packaging. The following documents shall be carried with the centrifuge when it leaves the factory: Packing list:
Product certificate:
Product manual:
List of random equipment and accessories;
Installation diagram (when there is no installation requirement in the product manual): other relevant technical information.
7.3 Transportation
The centrifuge shall not be rolled or inverted during transportation. 7.4 Storage
The centrifuge should be placed in a sheltered place with a relative humidity not exceeding 85%, a temperature not exceeding 40°C and no medium corrosion. 8 Warranty period
If the user complies with the storage, installation and operation provisions of the product manual, the manufacturer shall be responsible for free repair or replacement (excluding wearing parts) if the centrifuge is damaged or fails to work due to poor manufacturing quality within one year from the date of shipment from the manufacturer. 9 Others
9.1 Centrifuges made of sealed glue, plastic coating or other non-metallic materials, titanium alloys and other corrosion-resistant materials must also comply with their corresponding relevant standards.
9.2 Centrifuges with special requirements such as closed, pressurized, explosion-proof, and anti-toxic must also comply with their special standards. Additional notes:
This standard was proposed by the National Technical Committee for Separation Machinery Standardization. This standard is under the jurisdiction of the Hefei General Machinery Research Institute of the Ministry of Machinery Industry. This standard was drafted by Shanghai Chemical Machinery Factory, and this standard mainly involved Senren Shi Nianyao
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