This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of plate-type automatic filter presses for sugar-making machinery. This standard applies to plate-type automatic filter presses for sugarcane juice clarification in the sugar industry (hereinafter referred to as "products"). Plate-type semi-automatic filter presses are also applicable. QB/T 2375-1998 Plate-type automatic filter presses for sugar-making machinery QB/T2375-1998 Standard download decompression password: www.bzxz.net

QB/T 2375-1998
Plate-type automatic filter presses are widely used in the sugar industry. This standard is formulated to ensure product quality and meet user needs. This standard is proposed by the Quality Standards Department of the China Light Industry Association. This standard is under the jurisdiction of the National Sugar Machinery Standardization Center. The drafting unit of this standard is Kunming Light Industry Machinery Factory. The main drafters of this standard are Li Ping, Yang Shangyu, Lu Yuan, and Li Yuanyuan. This standard was first issued in March 1998.
Light Industry Industry Standard of the People's Republic of Chinabzxz.net
Sugar Machinery
Plate-type automatic filter press
QB/T 2375—1998
This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation, and storage of plate-type automatic filter presses for sugar machinery.
This standard applies to plate-type automatic filter presses (hereinafter referred to as "products") used for sugarcane juice clarification in the sugar industry. The plate type semi-automatic filter press also applies accordingly.
2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T 1804--1992
GB/T 3768—1983
—Determination of sound power level of noise source without tolerance for linear dimensions with general tolerances
Simplified method
GB/T 13306--1991
GB/T13384--1992
General technical conditions for packaging of electromechanical products
GB/T 14253--1993
General technical conditions for light industrial machinery
QB/T 1588.4—1993
General technical conditions for painting of light industrial machinery
JB/T6418-1992 Determination method for cleanliness of separation machinery ZB J50 012—1989
3 Product classification
3.1 Specifications
Technical conditions for painting of export machine tools
Product specifications are divided into 80, 100, 120, 150, 200, 300m series according to their filtration area. 3.2 Model
3.2.1 The product model consists of the following three units: T
3.2.2 Marking example
Main parameters: Filtration area (m)
Type: Plate (ban) type hydraulic (ya) type sugar making machinery Professional code: Sugar (tang) Filtration area 150m Plate type automatic filter press: TBY150 plate type automatic filter press 4 Technical requirements
4.1 Basic requirements
Approved by China Light Industry Federation on March 27, 1998
Implementation on December 1, 1998
QB/T2375—1998
4.1.1 Products should comply with the provisions of this standard and be manufactured according to the drawings and technical documents approved through the prescribed procedures. 4.1.2 If the dimension tolerance is not indicated on the drawing, according to the provisions of GB/T1804, the tolerance grade of the machined parts shall be medium grade m, and the tolerance grade of the non-machined parts and welded structural parts shall be rough grade ℃. 4.1.3 Materials that are harmful to the human body and materials that can react with the working medium and cause harm (generate harmful substances, etc.) shall not be used.
4.1.4 The materials of the parts shall have a quality certificate, otherwise the manufacturer shall inspect the materials and only qualified ones can be used. Purchased parts and outsourced parts shall have a quality certificate before assembly. 4.1.5 The electrical system, hydraulic system, cutting parts and welded parts shall comply with the relevant provisions of GB/T14253. 4.2 Working conditions
The selection and production of the filter cloth material shall comply with the requirements of the drawings and be finalized. 4.3 Assembly quality
4.3.1 The assembly shall comply with the relevant provisions of GB/T14253. 4.3.2 The parallelism error of the two horizontal (main) beams supporting the filter plate should not be greater than 0.5%, and the full length parallelism error should not be greater than 0.4%o, and the relative elevation error should not be greater than 2mm.
4.3.3 There should be no leakage in the oil pipeline of the top tightening oil supply system. 4.3.4 The pressure maintenance of the top tightening oil cylinder should be good.
4.3.5 The cleanliness of the hydraulic system should be less than 42mg/L. When the product is working, the oil cylinder shall not leak. 4.4 Appearance quality
4.4.1 The exposed machined surfaces of the main parts should be free of bumps, bruises and rust. 4.4.2 The quality of painting should comply with the provisions of QB/T1588.4, and the export products should comply with the relevant provisions of ZBJ50012. 4.5 After manufacturing and pre-assembly, the product must be tested for no-load operation and must meet the following requirements: a) The operation is smooth, coordinated and reliable, without friction, noise, etc.; b) Each adjustment mechanism, control device and actuator is flexible and reliable, without jamming and spontaneous movement. Only then can the load test be carried out (allowed to be carried out at the user's site). 4.6 During the cyclic operation of the product, the noise sound pressure level shall not be higher than 85dB (A). 4.7 Product reliability
4.7.1 Under normal production conditions, the cumulative working time of the product from the start of work to the occurrence of a fault that cannot be eliminated without stopping the machine (excluding the time for replacing wearing parts) is stipulated as the trouble-free working time. The trouble-free working time of three products is assessed, and the arithmetic average is taken as the average trouble-free working time. The average trouble-free working time of this product shall not be less than 2400h. 4.7.2 The service life of the product shall not be less than 10 years. 4.7.3 Under the condition that the user complies with the rules for transportation, installation and use of the product, if the product fails to work properly due to manufacturing quality problems within 12 months from the date of delivery (including a usage period of no more than 4 months), the manufacturer shall be responsible for repairing or replacing parts (excluding wearing parts). 5 Test methods
5.1 The castings, welded parts, machined parts, assembly quality, etc. of the product shall be inspected by conventional methods. 5.2 No-load running test
5.2.1 Pressure resistance test of the oil pipeline of the top tightening oil supply system: the test pressure is 1.25 times the working pressure of the top tightening oil supply system, and the pressure holding time is not less than 15 minutes, which meets the requirements of 4.3.3.
5.2.2 Pressure holding test of the top tightening oil cylinder: the test pressure is 1.25 times the working pressure of the oil cylinder, the pressure should rise slowly, and the pressure should be maintained for no less than 15 minutes after reaching the specified test pressure, and the pressure reduction shall not exceed 2MPa, which meets the requirements of 4.3.4. 5.2.3 No-load operation test Firstly, perform manual operation to check the feasibility of each action. Then, under automatic control, adjust the shortest cycle time to perform 10 cycles of no-load operation continuously, of which the pressure maintenance shall not be less than 2 times, which meets the requirements of 4.5. 5.2.4 The cleanliness of the hydraulic system shall be measured and calculated according to the weight method specified in JB/T6418. 484
5.3 Load test
QB/T2375—1998
After the installation is completed on site, the load test shall be carried out. The working medium is introduced, and its operation is checked under automatic program control to meet the requirements of 4.5.
5.4 Noise test
The product noise test method shall comply with the provisions of GB/T3768. The measurement position shall be 1m horizontally away from the edge of the product and 1.2m from the installation height. The test shall be carried out in the four directions of front, back, left and right, and the average sound pressure level shall be calculated to meet the requirements of 4.6. 6 Inspection rules
6.1 Factory inspection
6.1.1 The factory inspection items shall be carried out in accordance with the provisions of 4.3.1~~4.3.4, 4.4 and 4.5. 6.1.2 The product shall be deemed qualified if all the items of the factory inspection are qualified. 6.1.3 The product shall be inspected and qualified by the quality inspection department of the manufacturer before it can be shipped out. 6.2 Type inspection
6.2.1 Type inspection shall be carried out in any of the following situations. a) During trial production and finalization of new products;
b) After formal production, if there are major changes in structure, materials and processes that may affect product performance c) When the product is resumed after being discontinued for three years; d) When the factory inspection results are significantly different from the last type inspection; e) When the national quality supervision agency proposes a requirement for type inspection. 6.2.2 Sampling rules
Classification by manufacturer's production scale, see Table 1. Table 1
Production volume per batch
Sampling number
Qualified number
1~～4
6.2.3 Type inspection items shall be inspected according to all items specified in the technical requirements of this standard. If all items meet the requirements, they are qualified. 6.2.4 Type inspection can be carried out in the user's factory. 7
Marking, packaging, transportation, storage
7.1 Signage
Each product shall be fixed with a sign in a conspicuous position. The form, size and technical requirements of the sign shall comply with the provisions of GB/T13306. The sign shall indicate the following:
a) product model and name;
b) filter area;
c) working pressure;
d) product quality;
e) factory number;
f) factory date;
g) manufacturer name.
7.2 Packaging
7.2.1 Product packaging shall comply with the provisions of GB/T13384. 7.2.2 The following technical documents shall be attached to the product when it leaves the factory: 485
a) Product certificate;
b) Product instruction manual;
c) Packing list;
d) Foundation drawing;
e) Installation drawing;
f) Filter cloth production drawing.
3 Transportation
QB/T2375—1998
The overall transportation or piece-by-piece packaging transportation of the product shall comply with the requirements of land or water transportation and loading and unloading. 7.4 Storage
The product shall be placed in a ventilated, dry and rainproof place, and it is strictly forbidden to place it together with corrosive substances. After the storage period of half a year, the box shall be unpacked for inspection and anti-rust treatment shall be carried out again.
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