Some standard content:
ICS65.060.99
Machinery Industry Standard of the People's Republic of China
JB/T10289-2001
Feed extruder
2001-06-22 Issued
China Machinery Industry Federation
2001-10-01 Implementation
JB/T10289—2001
This standard is proposed and managed by the National Technical Committee for Agricultural Machinery Standardization. The drafting unit of this standard is the Animal Husbandry Machinery Research Institute of the Chinese Academy of Agricultural Mechanization Sciences. The main drafters of this standard are Huang Xiguo, Yang Bingnan, and Tang Jinqiu. This standard was first issued in June 2001.
1 Scope
Machinery Industry Standard of the People's Republic of China
Feed extruder
Feed extruder
JB/T10289—2001
This standard specifies the type, model, basic parameters, main performance, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of screw extrusion feed extruder (hereinafter referred to as extruder). This standard is applicable to screw extrusion feed extruder with and without steam conditioning for extruding powdered materials. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard by being referenced in this standard. When this standard was published, the versions shown were all valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest versions of the following standards: GB191—1990
GB/T 6991999
GB/T2828—1987
GB/T3768—1996
GB/T59171986
GB/T 6435—1986
GB/T 8622—1988
GB/T 9239—1988bzxZ.net
3 Definitions
Packaging, storage and transportation, pictorial signs
High-quality carbon structural steel
Batch-by-batch inspection, counting sampling procedures and sampling tables (applicable to inspection of continuous batches) Acoustic sound pressure method for determining the sound power level of noise sources Simple method of measuring the surface by envelope above the reflecting surface Method for determining the particle size of compound feed crushing
Method for determining moisture content in feed
Method for determining urease activity in soybean products Determination of the balance quality of rigid rotors Determination of allowable imbalance This standard adopts the following definitions.
3.1 Extruder
A processing equipment that integrates multiple operations such as mixing, friction heating, kneading and shearing. Conditioning feed extruder fed extruder with conditioner 3.2
Screw extrusion feed extruder with steam conditioner. Feed extruder without conditioner3.3
Screw extruder without steam conditioner. 4 Product classification
4.1 Screw
4.1.1 Diameter series 50, 65, 75, 85, 95, 105, 115, 120, 125, 135, 145, 160, 180, 200, 220, 240mm. 4.1.2 Number of spiral wire heads: single head, double head. 4.2 Discharging method
Approved by China Machinery Industry Federation on June 22, 2001 and implemented on October 1, 2001
It is divided into annular gap discharging and spray hole discharging.
4.3 Spray hole diameter series
JB/T10289—2001
It is divided into 4, 5, 6, 8, 10, 12, 14, 16, 18, 20mm. 4.4 Extruder model
It consists of three parts: professional code, variety code and specification code. The professional code and variety code are both expressed in uppercase Chinese pinyin letters, and the specifications are expressed in Arabic numerals.
Model example:
5 Technical requirements
Performance requirements
Nominal screw diameter: 135mm
Variety code: extruder
Professional code: feed machinery
The extruder shall comply with the requirements of this standard and be manufactured according to the product drawings and technical documents approved by the prescribed procedures. The performance of the extruder shall meet the requirements of Table 1. Main performance indicators of extruder
Pure working hour productivity
Power consumption per ton of material
kw·h/t
Matching power>37kW
Matching power≤37kW
Expanded soybean powder urease activity UA
Expanded product moisture content
Noise sound power level
Load degree
5.2 Structural requirements
Matching power≤37kW
Matching power>37kW
Expanded soybean (discharging through spray hole)
Without steam conditioning
5.2.1 The extrusion chamber shall be equipped with a temperature display device. With steam conditioning
Expanded powder (gap discharge)
Without steam conditioning
Meet the design requirements
≤100
With steam conditioning
5.2.2 The speed of the extruder feeding device should be adjustable and meet the processing requirements of different materials. The speed regulation method should be convenient, reliable and easy to operate.
5.2.3 The main shaft box of the extruder should have an oil mark display. 5.2.4 Parts in contact with high-temperature steam and water should be made of stainless steel. 5.3 Technical requirements for main parts
5.3.1 The main shaft material of the extruder should be no less than the mechanical properties of 45 steel, and the tempering treatment should be 250~285HB. 2
JB/T10289—2001
5.3.2 The service life of the screw, expansion chamber, wear ring and steam plug shall comply with the provisions of Table 2. Table 2 Wear resistance of main parts
Expansion chamber
Wear ring
≥800
≥800
5.3.3 The main shaft pulley must be statically balanced and the allowable unbalance shall meet the requirements of the balance quality G16 level in GB/T9239. 5.3.4 The weld seam of welded parts shall be uniform, neat, smooth and firm, and no defects such as burns and leaks are allowed. h
5.3.5 The surface of the casting shall be flat and smooth, and no defects such as sand sticking, pores, cracks and other defects that damage the appearance and affect the quality of use shall be allowed. 5.4 Technical requirements for assembly
5.4.1 All parts of the extruder must be inspected and qualified. Purchased parts and outsourced parts must have a certificate of conformity before assembly. 5.4.2 After the screw is assembled, the screw and the main shaft must not be skewed or loose, and the screw and the extrusion chamber must not have any friction or jamming. The clearance error between the outer diameter of the screw and the inner diameter of the extrusion chamber should not exceed ±0.25mm. 5.4.3 There must be no oil leakage at the main shaft bearing seal and the reducer. 5.4.4 The angle of the paddle in the conditioner must meet the technical requirements and must not rub against the inner wall of the conditioner. 5.4.5 After assembly, all rotating parts should rotate freely and run smoothly, and the external connectors and fasteners should be firm and reliable. There must be no abnormal noise, vibration or leakage. There must be no chain skipping in the chain transmission part. 5.4.6 The paint layer should be firm, flat, smooth, and uniform in color. There should be no defects such as brush marks, sagging, pinholes, pitting, wrinkles, bubbles, and adhesion stains.
5.5 Safety technical requirements
5.5.1 The motor of the extruder should be equipped with a complete starting and overload protection device. 5.5.2 The extruder should have complete grounding measures and be marked with a grounding symbol. 5.5.3 The control, adjustment, display and other devices must be complete, sensitive and reliable. 5.5.4 The transmission parts such as belts and sprockets must have safety protection covers. 5.5.5 The surface of high-temperature parts should have warning coatings or warning signs. 5.5.6 The steam pressure gauge should be a qualified product with a pressure range of 0~15MPa. 5.5.7 The maximum steam pressure shall not exceed 6MPa6 Test method
The test of the extruder includes no-load test and load test. 6.1 Test conditions
6.1.1 The test site and the installation of the prototype shall comply with the relevant provisions of the product manual and meet the test requirements. 6.1.2 The test voltage is 380V, and the deviation is not more than 10% of the rated value. 6.1.3 The steam and materials used in the test shall meet the test requirements, and the test steam pressure is 2-6MPa. 6.1.4 The test instruments, meters and measuring tools must be calibrated and qualified according to regulations before use, and within the validity period of the calibration. 3
JB/T10289—2001
5 The prototype operation should be equipped with fixed skilled personnel. 6.1.5
No-load test
After idling for 10 minutes, measure the following items and record the results in Table 5. Measure the speed of the main shaft and the quenching and tempering shaft.
Observe whether there is oil leakage at each sealing part, and observe whether the operation of the whole machine is normal and stable, and whether there is any abnormal sound. Measure the power of each motor.
6.3 Load test
Test conditions and requirements
Record the technical characteristics of the test sample in Table 3. Table 3 Technical characteristics of test prototype
Pure working hour productivity
Total installed capacity
Main motor power
Feeder motor power
Conditioner motor power
Screw diameter
Discharging method
Overall dimensions (length×width×height)
Machine weight
Annular gap discharging
Spray hole discharging
Record the test results of the physical properties of the powder and mixed powder in Table 4. 6.3.1.2.1 Material moisture content
Take samples from the powder three times, determine the moisture content of the powder according to the provisions of GB/T6435, and calculate the arithmetic mean. 6.3.1.2.2 Material particle size
Use standard sieve to determine the particle size of powder according to the provisions of GB/T5917 Table 4 Physical properties of materials
Wet weight of sample
Dry weight of sample
Relative humidity
Sampling weight
Oversize
Oversize
Oversize
Average value
6.3.2 Parameter determination
JB/T10289—2001
Load parameter determination should be carried out under the full load condition of the prototype, adjust the prototype to the best working condition, and perform the following determination after stable operation for 15 minutes, and record the measured results in Table 5.
6.3.2.1 Load power
Measure the load power of the whole machine and each motor once every 10 minutes, and measure three times to get the average value. 6.3.2.2 Determine the main shaft speed and tempering shaft speed by directly measuring with a tachometer, and measure three times to get the average value. 6.3.2.3 Pure working hour productivity
Take samples at the outlet of the extruder, and each taking time shall be no less than 5 minutes or the weight of the taken sample shall be no less than 100kg. Weigh the samples immediately and measure the moisture content of the samples according to the provisions of GB/T6435. Measure once every 10 minutes, for a total of three times, and take the average value. Calculate the pure working hour productivity according to formula (1) or measure according to the standard of pellet feed press. W1-M
T1-13%
Where: 9
-pure working hour productivity, kg/h;
sample weight, kg:
Mmoisture content of extruded product, %
T—taking time, h;
-moisture content of feed safety storage.
6.3.2.4 Electricity consumption per ton of material
Calculate the electricity consumption per ton of material according to formula (2):
Where: E-
Electricity consumption per ton of material for producing puffed products, kW·h/t: Power consumption of the whole machine, kW·h.
6.3.2.5 Load degree
Calculate the load degree of each motor according to formula (3): N
Where: L Motor load degree:
Motor rated power, kW;
Motor load power, kW.
6.3.2.6 Noise
Measure the noise of the prototype according to the provisions of GB/T3768 Acoustic Sound Pressure Method for Determining Noise Sound Power Level (Simplified method using envelope measurement surface above the reflecting surface).
6.3.3 Product quality
Before bagging, take a sample of no less than 50g, randomly select 5~10g from it and measure it according to the provisions of GB/T6435, measure three times and take the average value, calculate the moisture content according to formula (4) or measure the moisture content with a moisture meter. 5
JB/T10289—2001
Moisture (%)=
—weight of the sample and the weighed sample before drying at 105℃, g; Where: W
W，—weight of the sample and the weighed sample after drying at 105℃, g; W. —weight of the weighed sample after constant weight, g.
6.3.4 Urease activity
When puffing full-fat soybeans, take a sample at the outlet of the puffing machine and measure the urease activity according to the provisions of GB/T8622. Table 5 Performance test measurement table
Measurement content
Main motor current
Quenching and tempering motor current
Feeder current
Spindle speed
Quenching and tempering motor
Feeder motor
Quenching and tempering motor
Feeder
Pure working hour productivity||tt| |Power consumption per ton of material
Noise sound power level
Quality of finished product
7 Inspection rules
Moisture content
kw·ht
Urease activity UA
Product inspection is divided into factory inspection and type inspection Factory inspection
Average value
7.2.1 When the extruder leaves the factory, it shall be inspected and qualified by the quality inspection department of the manufacturing unit, and can only leave the factory with a product certificate. 2 The factory inspection items are 5.3, 5.4, 5.5 and 5.6. 7.2.2
Type inspection
JB/T10289—2001
7.3.1 Type inspection shall be conducted in any of the following cases: a) Trial production and identification of new or old products; b) When the product is discontinued for two years and production is resumed; Type inspection shall be conducted every three years after normal production; d) When the national quality supervision department puts forward type inspection requirements; e) When there are major changes in the design, process, production equipment and management of the product. 7.3.2 Type inspection shall be conducted by randomly selecting samples from the products that have passed the factory inspection. 7.3.3 The content of type inspection shall be all items specified in Chapter 5. The enterprise may also provide relevant certification materials for the quality of the main parts. 7.3.4
Each batch of type inspection is 2~8 units, and 2 extruders are randomly selected for inspection according to the provisions of this standard. The sample machines for type test shall be randomly selected from the products that have passed the factory inspection, and the number shall not be less than 2 units. The inspection items are divided into Class A, Class B and Class C according to their influence on product quality, and their classification is shown in Table 6. Table 6 Unqualified classification
Safety protection device
Pure working hour productivity
Power consumption per ton of material
Working life of screw
Working life of inner wall of expansion chamber
Working life of mold-resistant ring
Working life of steam plug
Balance of main pulley
Speed regulation system
Appearance quality
Marking and packaging
Moderate belt tension, consistent belt length| |tt||After the screw is assembled, there shall be no friction or jamming. The chain transmission shall be smooth without chain jumping.
Sealing and leakage
Vibration and abnormality
7.3.7 The judgment rules are shown in Table 7. In Table 7, AQL is the qualified quality level of the product, Ac is the qualified judgment number, and Re is the unqualified judgment number. The product shall be assessed item by item and classified according to the unqualified items. The lowest quality level that can be achieved by each inspection item is the quality level of the batch of products.
Table 7 Judgment Rules
Number of items
Inspection level
Sample code
Sample size
JB/T10289—2001
7.3.8 When the ordering unit requires random inspection of product quality, the sampling method shall be in accordance with the provisions of GB/T2828, or it may be determined by negotiation between the supply and demand parties. The inspection items and qualified quality level (AQL) shall be determined by negotiation between the supply and demand parties. 8. Labeling, packaging, transportation and storage
8.1 Labeling
Each extruder shall be fixed with a product label in a conspicuous position, and its contents shall include: a) Product name and model:
b) Overall dimensions:
c) Spindle speed, supporting power, hourly productivity; d) Machine quality:
e) Factory number;
f Factory date:
g) Manufacturer name.
8.2 Packaging and transportation
8.2.1 The packaging of the extruder and its parts shall comply with the following provisions: a) The bottom of the machine shall be firmly fixed and shall not be inverted; b) The packaging shall be moisture-proof and rain-proof; c) The center of gravity, weight, overall dimensions and other relevant contents shall be marked on the packaging box in accordance with the provisions of GB191; d) The packaging must be firm and reliable and meet the requirements of the transportation department. 8.2.2
The accessories, spare parts and tools supplied with the extruder should be complete. 8.2.3Each extruder should be accompanied by the following documents: a) product certificate;
b) product instruction manual;
) packing list.
8.2.4 The packaging of products for export shall comply with the relevant regulations of the foreign trade department or the contract provisions. 8.3 Storage
8.3.1 Products stored indoors shall have good ventilation and moisture-proof measures. 2 Products stored outdoors shall have a support at the bottom and measures to prevent rain, moisture and sunlight shall be taken. 8.3.2
Republic
Mechanical Industry Standard
Feed Extruder
JB/T10289-2001
Published and issued by the Mechanical Science Research Institute
Printed by the Mechanical Science Research Institute
(No. 2 Shouti South Road, Beijing: Postal Code 100044)*
Format 880×1230
1/16 Printing Sheet 3/4
4 Words 18000
First Edition in September 2001
First Printing in September 2001
Printing Quantity 1-500
Price 1200 Yuan
2001-130
Mechanical Industry Standard Service Network: http/AvwwJB.ac.cn1068
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.