This standard specifies the type, model, basic parameters, technical performance, technical requirements and inspection rules of screw extrusion type (self-heating or preheating) expanded pellet feed machine. This standard is applicable to screw extrusion type expanded pellet feed machine and also to screw extrusion type soft pellet feed machine. JB/T 5684-1991 Expanded pellet feed machine JB/T5684-1991 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T5684-91
Expanded Pellet Feed Machine
Published on September 13, 1991
Published by the Ministry of Machinery and Electronics Industry of the People's Republic of China
Implemented on July 1, 1992
Mechanical Industry Standard of the People's Republic of China
Expanded Pellet Feed Machine
Subject Content and Scope of Application
JB/T5684-91
This standard specifies the type, model, basic parameters, main performance, technical requirements and inspection rules of screw extrusion type (self-heating or preheating) expanded pellet feed machine (hereinafter referred to as extruder). This standard applies to screw extrusion type expanded pellet feed machine and also to screw extrusion type soft pellet feed machine. 2 Reference standards
GB1184
GB1804
GB5675
GB6414
GB10095
JB2759
Type. Model
3.1 Type
High-quality carbon structural steel
Technical conditions
Shape and position tolerances
Provisions for tolerances not specified
Tolerances and fitsLimit deviations of dimensions without tolerancesClassification and technical conditions of cast iron parts
Tolerances of casting dimensions
Involute cylindrical gears
Product labels
General technical conditions for packaging of electromechanical products
Painting of agricultural machinery and implements
Screw extrusion type.
Model Indication Method
The extruder model is indicated by Chinese phonetic letters and Arabic numerals. 口-口
Variant code (not marked if no variant)
Preheating or cooling code (not marked if not used)Main parameters
Characteristic code
Category code
Approved by the Ministry of Machinery and Electronics Industry on September 13, 1991 and implemented on July 1, 1992
Model example:
4 Basic parameters and main performance indicators
4.1 Basic parameters
4.1.1 Screw
JB/T5684—91
a. Diameter series 50, 65, 75, 85, 100(98), 120mmb. Length range
Short screw
Medium and long screw
Long screw
Below 250mm;
250~~400mm;
Above 400mm. bZxz.net
4.1.2 Die hole diameter series 1.5, 2.0,
4.2 Main performance indicators
2. Power consumption per ton of material
b, Particle forming rate
c. Particle floating rate
d. Floating time
Working area noise
2.5, 3.0,
First modification or improvement
Preheating (electricity or steam)
Nominal diameter of screw is 98mm
Expanded pellet feed machine's "expanding" and "pellet" animal husbandry machinery
4.0, 5.0,
110kwh/t;
≥98%;| |tt||≥95%;
≥6h;
≤85dB(A);
Reliability coefficient of expansion chamber temperature (the highest temperature on the surface of the sleeve or die head)
5 Technical requirements
General technical requirements
100--160℃
≥90%
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 raw materials used to manufacture the extruder shall comply with the provisions of relevant national standards. The surface of the casting shall be flat and smooth, and shall not have sand adhesion, pores, cracks and other defects that damage the appearance and affect the quality of use. The dimensional tolerance of the casting shall be manufactured according to the CT12 grade specified in GB6414. Forgings and cold-processed parts shall be flat and smooth, and shall not have defects such as shrinkage, misalignment, burrs, cracks, etc. that affect the strength. The weld surface of the welded parts should be uniform, neat, smooth, firm, and no defects such as burns and leaks are allowed. The limit deviation of the tolerance size of the processed parts shall be manufactured according to the IT14 level in GB1804. The shape and position tolerances are not noted, and they shall be manufactured according to the C level in GB1184. All parts must be inspected and qualified, and the purchased and outsourced parts must have a certificate of conformity before they can be assembled. The quality of the machine surface paint shall meet the requirements of ordinary weather-resistant coatings in Table 2 of NJ/Z3. The rotating parts of the product shall have reliable safety protection devices, and the metal casing of the electrical equipment shall have grounding protection measures. 5.2 Assembly technical requirements
The coaxiality of the main shaft and the screw and the main bearing hole and sleeve aperture of the transmission box shall not be lower than level 7 in GB1184. 5.2.2
After the screw is assembled, the screw and the main shaft shall not be skewed or loose, and the screw and the sleeve shall not have friction or jamming. 2
JB/T5684-91
5.2.3 The cutter should rotate flexibly after assembly, and the cutter blade should be in the same plane and parallel to the outer plane of the die head. Its parallelism should be in accordance with Grade 8 in GB1184.
5.2.4 The sleeve connecting bolts must ensure sufficient strength and must not be pulled off. 5.2.5 After assembly, each rotating part should rotate freely, and the external connecting parts and fasteners should be firm and reliable, and run smoothly without abnormal noise, vibration and leakage.
5.3 Technical requirements for main components
5.3.1 The materials and hardness of the screw, sleeve, cutter and die head should meet the following requirements: a.
The mechanical properties of the material shall not be lower than the requirements of No. 45 steel specified in GB699; the hardness of the screw surface, cutter blade, sleeve and die head inner surface and die hole shall not be lower than 56~62HRC. The gearbox housing should be made of HT200 material with mechanical properties not lower than those specified in GB5675 and should be aging treated. 5.3.3
The cylindrical gears of the gearbox should be manufactured in accordance with the relevant provisions of GB10095, with an accuracy not lower than Grade 9. 6 Inspection Rules
The extruder must be inspected and qualified by the quality inspection department of the manufacturer and can only leave the factory with a product certificate. 6.2 All newly designed products and products with major improvements must be subjected to performance tests and production tests in accordance with JB/T5685. The number of performance test units shall not be less than 2. The test results shall meet the main performance indicators of Article 4.2 of this standard. The number of production test units shall not be less than 1. The assessment time shall not be less than 200h. The main components shall not be replaced during the test, otherwise the test shall be repeated. 6.3 The batch-produced extruders shall be sampled once a year. The number of sampled units shall be as shown in the table below, and the test shall be carried out in accordance with the provisions of JB/T5685. Batch quantity
Test quantity
6.4 The ordering unit may conduct random inspection of product quality according to this standard, and the number of random inspections may be determined by negotiation between the ordering unit and the manufacturer. If the inspection results are unqualified, double re-inspection shall be conducted. If there are still unqualified results, all products shall be repaired and re-submitted for acceptance. If there are unqualified results again, the user is allowed to return the products. 6.5 Under the conditions specified in the use and maintenance instructions provided by the manufacturer, if the product is damaged or cannot work normally due to manufacturing quality within half a year from the date of delivery, the manufacturer shall be responsible for repairing or replacing it for the user (except for wearing parts). 7. Labeling, packaging, transportation and storage
7.1 Labeling
The label of the extruder shall be manufactured in accordance with the provisions of JB8 and fixed in a conspicuous position. The label shall include the following contents: a.
Product name and model;
Main shaft speed (r/min), supporting power (kW), hourly productivity (t/h); machine weight, kg,
Factory number;
Factory date;
Manufacturer name.
7.2 Packaging and transportation
The product shall be guaranteed not to be inverted, damaged, damp or rained during shipment. It shall comply with the provisions of JB2759 and 7.2.1 of railway transportation on freight transportation, and can also be determined according to user needs. 7.2.2The accessories, spare parts and tools supplied with the product shall be complete. 7.2.3
The following technical documents shall be supplied with the product:
Product certificate;
Product use and maintenance instructions;
Packing list;
User opinion solicitation letter.
JB/T5684—91
7.2.4The packaging of products for export shall comply with the relevant regulations of the foreign trade department. 7.3 Storage
7.3.1 When the product is stored indoors, good ventilation and moisture-proof measures shall be taken. 7.3.2 When the product is stored outdoors, the bottom should be supported by a support and protected from rain and sun. Additional Notes:
This standard is under the jurisdiction of the China Agricultural Mechanization Research Institute of the Ministry of Machinery and Electronics Industry. This standard was drafted by the Hunan Agricultural Machinery Research Institute and the Jiangsu Agricultural Machinery Research Institute. The main drafters of this standard are Yan Peichu, Yuan Chao, and Zhai Xinghui. People's Republic of China
Mechanical Industry Standard
Expanded Pellet Feed Machine
JB/T5684-91
Published and distributed by the Mechanical Standardization Research Institute of the Ministry of Machinery and Electronics Industry (PO Box 8144, Beijing
Postal Code 100081)
Copyright reserved
No help is allowed
Printed by Qinghe County Printing Factory, Hebei Province
Format 880X1230
Sheet 1/2
Word count 8000
First edition in December 1991
First printing in December 1991
Print run 00.001-500 Price 0.80 yuan
No. 0482
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