JB/T 7136.1-1993 Technical requirements for straw chemical treatment machines
Some standard content:
Mechanical Industry Standard of the People's Republic of China
JB/T7136.1-93
Straw Chemical Treatment Machine
Published on November 21, 1993
Technical Conditions
Implemented on March 1, 1994
Ministry of Machinery Industry of the People's Republic of China
Mechanical Industry Standard of the People's Republic of China
Straw Chemical Treatment Machine:
Technical Conditions
1 Subject Content and Scope of Application
JB/T 7136.1--93
This standard specifies the terminology, technical requirements, test methods, inspection rules and markings, packaging and storage of straw chemical treatment machines. This standard applies to straw chemical treatment machines or units (hereinafter referred to as treatment machines) with a single-axis multi-layer side-finger structure agitator and a straw uniform feeding function. Treatment machines with other structures can also be used for reference. 2 Reference standards
GB1184
GB1801
GB7284
GB9174
GB9239
GB11365
Technical conditions for high-quality carbon structural steel
Tolerances on shape and positionTolerances and fit dimensions without tolerancesTolerance zones and fits for holes and shafts up to 500mmFrame wooden boxes
General technical conditions for transport packaging of general goodsBalance quality of rigid rotorsDetermination of allowable imbalancePrecision of bevel and hypoid gears
JB/T7136.2Test methods for straw chemical treatment machineZBB93022
3 Terminology
Technical conditions for straw machines
Painting of agricultural machinery
3.1 Straw chemical treatment machinebzxz.net
Machinery for physical and chemical treatment of straw and chemical liquid. 3.2 Longitudinal fiberization
Changes in cracks or ruptures in the longitudinal direction of the straw segment under mechanical action. 4 Technical requirements
General technical requirements
4.1.1 The product shall comply with the requirements of this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures. 4.1.2 The processor must have reliable safety protection devices. 4.1.3 The bearing temperature rise shall not exceed 25°C during the production test. 4.1.4 The inner cavity of the agitator shall be painted according to TQ-2-F specified in NJ/Z3, and other parts shall be painted according to TQ-1-B(N)-P specified in NJ/Z3. 4.2 Main technical indicators
4.2.1 The chemical treatment materials are mainly wheat straw, rice straw, and corn straw, with a moisture content not exceeding 15%. When the blowing height is between 2.5 and 3m and the horizontal blowing distance is between 4 and 7m, its main technical indicators shall comply with the provisions of Table 1. Approved by the Ministry of Machinery Industry on November 21, 1993
Implemented on March 1, 1994
Coefficient of variation of stirring uniformity V. %
Longitudinal fiber disintegration rate%
Sound dB(A)
Pure working time kilowatt-hour productivity
kg/(kW·h)
JB/T7136.1-93
Wheat straw, rice straw
Dry corn straw
4.2.2 The average working time before the first failure is not less than 120h. 4.3 Technical requirements for main parts
4.3.1 The manufacturing of moving knife, fixed knife and knife wheel shall comply with the provisions of ZBB93022. 4.3.2 The material of stirring shaft, knife wheel shaft and each transmission shaft 4.3.2.1
The material shall be made of 45 steel specified in GB699. The hardness of the quenching and tempering treatment is 217~255HB.
4.3.2.3 The parts matching with the rolling bearing shall be manufactured according to K6 specified in GB1801, and the surface roughness R of the journal part shall be 1.6μm, and the coaxiality tolerance with the common axis shall meet the 7th grade specified in GB1184. 4.3.3 The precision of the processed gear shall meet the 9-9-8-cC specified in GB11365. 4.3.4 Welded parts
The weld should be firm and flat, and no defects such as broken welds, cold welds, cracks, pores, etc. that affect the strength are allowed. And the welding slag and burrs should be removed. 4.3.5 The surface of the sheet metal parts should be flat, the transition part should be smooth, and the bite should be tight and firm. 4.3.6 Cast iron parts are not allowed to have casting defects such as pores, sand holes, burrs, etc. 4.4 Assembly technical requirements
4.4.1 All parts must be inspected and qualified, and the purchased parts and cooperative parts can be assembled only with the certificate of conformity. 4.4.2 After the agitator rotor and blade wheel are assembled, a static balance test shall be performed. The allowable unbalance shall comply with the G16 level specified in GB9239. 4.4.3
After the feeder is assembled, it shall operate flexibly, and the pre-cut feeder shall not be stuck when feeding on one side. After the clutch is assembled, it shall be flexible to operate, stable and reliable in engagement, and thorough in separation. The liquid medicine supply and alcohol spraying system shall be airtight, without leakage or air leakage. After the final assembly, all operating parts shall operate normally and smoothly. All fasteners must be tightened and shall not be loose. 5
Test method
According to the provisions of JB/T7136.2.
6 Inspection rules
6.1 Factory inspection
6.1.1 Each processor shall be inspected and qualified by the quality inspection department of the manufacturer, and can only be shipped after the certificate of conformity is issued. 6.1.2 Before the processor leaves the factory, it must be tested for no less than 30 minutes of idling at rated speed, and must meet the requirements of Articles 4, 4.1, 4.4.3, 4.4.4, 4.4.5 and 4.4.6. If there are any unqualified items, they can only leave the factory after being repaired and inspected. 6.2 Type inspection
6.2.1 Type inspection should be carried out in any of the following situations: a.
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; during normal production, type inspection should be carried out at least once every 3 years; when the product is resumed after being discontinued for 3 years:
JB/T7136.1-93
When the national quality supervision agency proposes a requirement for type inspection. 6.2.2 Randomly select no less than 2 processors for inspection. 6.2.3 A normal inspection sampling plan is adopted, and the inspection batch N=2~8 units. The item classification, sampling plan and judgment rules are shown in Table 2. When the number of unqualified products inspected is less than or equal to Ac, the batch of products is judged to be qualified; when the number of unqualified products inspected is greater than or equal to Re, the batch of products is judged to be unqualified. Table 2'
Item classification
Item name
Sampling plan
Number of items
Inspection level
Sample code
Number of samples
Ac, Re
Quality assurance period
Coefficient of variation of stirring uniformity:
Longitudinal fiber unraveling rate; pure working time
KW-hour productivity, the qualified rate of major parts and components reaches 85%
Noise; average working time before the first failure
time; static balance accuracy of agitator rotor; static balance accuracy after knife wheel assembly, quality difference of moving blades; quality difference of the sum of blades and blade support plates, quality difference of moving claws
Quality of welding, casting, sheet metal, painting: assembly quality of feeder, clutch, medicine
liquid system, and general assembly; idling; marking, marking,
under the condition that the user unit complies with the provisions of the instruction manual, within 1 year from the date of purchase, if damage occurs due to poor manufacturing quality, the manufacturer shall be responsible for repair, replacement, and refund. 8
Marking, packaging and storage
Each processor should be fixed with a product label in a conspicuous position, and the label should indicate: a.
Manufacturer name;
Product name;
Product model or specification;
Spindle speed, r/min;
Productivity, kg/h;
Matching power, kW;
Machine weight, t
Factory date or product number.
8.2 Indicate the rotation direction of the main working parts such as the stirring shaft and the blade wheel shaft with a red arrow in a conspicuous position on the casing, mark the clutch operation gear and lubrication point with appropriate marks, and indicate the functions of the electrical buttons and display components. 8.3
When the processor leaves the factory, it should be packaged in accordance with Article 4.1.2 of GB9174 and GB7284 to ensure that the product is not damaged. The accessories, spare parts and tools supplied with the product should be complete. The technical documents supplied with the product include:
Packing list;
Product quality inspection certificate;
Product instruction manual;
User opinion survey form.
JB/T7136.1-93
8.6.1 When storing indoors, good ventilation and moisture-proof measures should be taken. 8.6.2 When stored outdoors, the bottom should be supported and rainproof measures should be taken. Additional remarks:
This standard was proposed and managed by the Hohhot Animal Husbandry Machinery Research Institute of the Ministry of Machinery Industry. This standard was drafted by the Hohhot Animal Husbandry Machinery Research Institute of the Ministry of Machinery Industry. The main drafter of this standard is Yang Wenda.
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