Some standard content:
Machinery Industry Standard of the People's Republic of China
JB/T7315-94
Compound feed processing unit
Issued on July 18, 1994
Ministry of Machinery Industry of the People's Republic of China
Test methods
Implementation on July 1, 1995
Subject content and scope of application
Cited standards
Performance testwww.bzxz.net
Production test
Test report
Appendix A
Test method for continuous processing of three batches of raw materials by the unit (reference part) Main instruments, meters, equipment and measuring tools for the test (reference part) Appendix B
Machinery Industry Standard of the People's Republic of China
Compound feed processing unit
1 Test methods
|1 Subject content and scope of application
This standard specifies the conditions and methods for performance test and production test of compound feed processing units. JB/T 731594
This standard applies to processing units (complete sets of equipment) that process raw materials that need to be crushed and powdered raw materials that do not need to be crushed into powdered compound feed by manual weighing and metering.
Cited standards
GB3768
GB5915
GB5916
GB5917
GB5667
GB6971
JB/T7320
3 General
Determination of sound power level of noise source-Simplified method Compound feed for piglets and growing and finishing pigs
Compound feed for growing chickens, laying hens and broilers Method for determination of compound feed grinding particle size
Test methods for agricultural machinery production
Test methods for feed grinders
Test methods for vertical feed mixers
3.1 This standard includes the following two tests:
Performance test of units and main units;
Production test.
3.2 The test items of this standard may be increased or decreased according to different test purposes. 4 Performance test
4.1 Purpose
To assess whether the working performance and technical and economic indicators of the unit and main units meet the design requirements. 4.2 Test conditions and requirements
4.2.1 The technical characteristics of the test sample and the main unit are recorded in Table 1 and Table 2. 4.2.2 The raw materials to be crushed for the test are uniformly national second-grade corn, with a moisture content of 12%~14%. 4.2.3 The unit test is to process three batches of raw materials each time [see Appendix A (reference)] continuously, and the test is not less than once. The formula is uniformly 70% corn and 30% powder. The crushed particle size is that all pass through the 8-mesh analysis sieve, and the material on the 16-mesh analysis sieve shall not exceed 20%. The crusher used for type 1 should also have the function of processing straw and block-shaped raw materials. If necessary, its performance of crushing straw can be supplemented. Use 2 sieve holes, and the power consumption per ton of material is less than or equal to 40kW·h/t. The moisture content of straw is 8%~14%. 4.2.4
The crushing particle size determination method shall be carried out in accordance with GB5917. The test power shall be an electric motor, and its power shall meet the supporting requirements. The test site shall be spacious, bright, and have reliable fire protection facilities. Before the test, the instruments and meters used must be calibrated and qualified according to relevant regulations. Approved by the Ministry of Machinery Industry on July 18, 1994
Implementation on July 1, 1995
JB/T731594
4.2.8 The test unit shall be kept in good technical condition. Before the test, it shall be maintained according to the requirements specified in the instruction manual and adjusted to normal working condition. During the measurement process, there shall be a dedicated person to operate. 4.2.9 The test voltage is 380V, and the deviation is within the range of ±5%. 4.2.10 The average output power of the motor during the test shall not exceed 110% of the rated power value; the test productivity shall be within the unit productivity range of the corresponding test conditions specified in the instruction manual. Determination before the test
The determination of the unit volume weight of corn was carried out in accordance with the relevant provisions of GB6971, and the results were recorded in Table 3. The determination of the moisture content of corn was carried out in accordance with the relevant provisions of GB6971, and the results were recorded in Table 3. The temperature of the raw materials before processing was measured with a mercury thermometer and recorded in Table 8. The atmospheric pressure, temperature, humidity and site conditions of the test site were measured and recorded in Table 4. The performance test of the crusher was carried out in accordance with GB6971. The results are recorded in Table 5. The performance test of the mixer was carried out in accordance with JB/T7320, and the results are recorded in Table 6. Measure the load power, productivity and spindle speed of the main conveying device and record them in Table 7. 4.7
Unit performance test
Unit no-load test
After the unit runs normally, measure the no-load power of the unit and record the results in Table 8. 4.7.2#
Unit load test, record the following measurement results in Table 8. 4.7.2.1
Pure working hour productivity is calculated according to formula (1): Q
Where: E. —Pure working hour productivity, t/h; Q. —Pure working time workload, t;
T. —Pure working time, h.
4.7.2.2 The power consumption of one ton of feed is calculated according to formula (2): G,
The power consumption of the unit in processing one ton of compound feed, kW·h/t: In the formula. G.—
G.—Power consumption of the unit during pure working time, kW·h. The load power is calculated according to formula (3):
The input power of the motor when working under load, kW, In the formula; P,
4. 7. 2. 4
The load degree is calculated according to formula (4):
In the formula: E—
The load degree of the motor, %:
P.—The output power of the motor when under load, kW; P—The rated power of the motor, kW;
—The rated efficiency of the motor, %.
4.7.2.5 Determination of bearing temperature
(2)
Use a semiconductor point thermometer to measure the surface temperature of the bearing housing of the main parts of the unit before and at the end of the test and calculate the temperature rise. The results are recorded in Table 8.
4.7.2.6 Determination of finished product temperature
After each test, use a mercury thermometer to measure the temperature of the finished feed at the outlet, calculate the temperature rise, and record the results in Table 2
JB/T7315-94
4.7.2.7 The unit noise is determined in accordance with GB3768, and the results are recorded in Table 10. 4.7.2.8 The dust concentration is determined in accordance with the relevant provisions of GB6971, and the results are recorded in Table 11. 4.7.2.9 The finished product mixing uniformity is determined in accordance with the methyl violet method in JB/T7320. At the outlet of the unit finished product, during the unloading of the batch of finished products, 10 samples are taken at equal time intervals, and the weight of each sample is set to 100g. Test three times under the same working conditions, and record the calculation results in Table 9. 4.7.3 The unit performance test data are summarized and listed in Table 12. 5 Production test
5.1 Purpose
To assess the economic efficiency, reliability, performance stability, regional adaptability, adjustment and maintenance convenience, durability of main parts and wearing parts, and safety of the compound feed processing unit. 5.2 General requirements
5.2.1 Before the production test, a test outline should be prepared to clarify the test purpose, requirements and progress, and organize and arrange the test work. 5.2.2 Before mass production, there should be no less than 2 prototypes for production test, and their technical conditions should comply with the provisions of relevant documents: The number and technical conditions of the prototypes for random inspection of mass production products should comply with the provisions of relevant standards and documents, and necessary accessories and tools should be available. 5.2.3 The test conditions should comply with the applicable scope specified in the operating instructions of the test unit. 5.2.4 Production test operation time: one unit shall not be less than 300 hours, and the remaining units shall not be less than 200 hours. 5.2.5 During the production test, full-time test personnel should be equipped, and operators should be equipped according to the provisions of the prototype manual. 5.3 Test content
5.3.1 Production test
5.3.1.1 Carry out the test according to the specified operating time. Realistic records should be kept throughout the production test. First, the feed formula that may be used in the production test should be recorded in Table 13. Determine the shift time, operating time, various non-operating time, feed processing types and quantities, energy consumption, and the number of operators and auxiliary personnel, and record them in Table 14. After completing the production test of operating time, summarize the data in Table 15 according to the shift sequence, and calculate the productivity, unit energy consumption, reliability, adjustment convenience, time utilization, and the results are recorded in Table 16. 5.3.1.2 The parts of the machine that fail in each shift and the deformation and damage of the parts are recorded in Table 14, and the damaged parts that have been replaced are numbered and the damage time is noted for centralized storage. After completing the production test of the operation time, the deformation and damage of the main parts are summarized in Table 18, and the service life of the wearing parts is calculated.
5.3.1.3 For non-wearing parts, photos should be taken of the parts that are seriously damaged during the production test, and the reasons should be analyzed as a basis for improving the design.
The relevant data of the main parts and wearing parts should be measured before and after the test, and the results should be recorded in Table 17. 5.3.1.41
5.3.1.5 Observe or measure the operating convenience and safety of the working state of the prototype, such as vibration, field of view and personal safety of operators. 5.3.1.6 Observe and measure whether the adjustment, maintenance and disassembly and assembly of each part of the prototype are convenient. 5.3.2 Production verification and performance testing
5.3.2.1 Perform performance measurements at least once in the early, middle and late stages of the production test to assess whether the design requirements and performance stability are met. If it is found that the performance does not meet the design requirements, the production assessment should be stopped, and the design department and the manufacturing unit must jointly adjust, repair and improve it to meet the design requirements before continuing the production assessment. 5.3.2.2 During the production test, the prototype shall be tested for production for no less than three consecutive shifts. The working time of each tested shift shall not be less than 6 hours, accurate to \min". During the production test, the various time consumption, the amount of feed produced, the amount of electricity consumed in each shift shall be accurately measured, and the productivity of pure working time and the amount of electricity consumed per unit of work shall be calculated. 5.3.3 Time classification of production test
The time classification of production test is as follows:
5.4 Calculation of technical and economic indicators
5.4.1 Productivity
Shift time T.| |tt||JB/T731594
（Pure working time T.
Operation time T
Manual start time
Feeding and unloading time
Adjustment and maintenance time T
Non-operation time
5.4.1.1 The pure working hour productivity is calculated according to formula (5): E
Where: E.—pure working hour productivity, t/h; Qa\—production check shift workload, t; T.-—production check shift pure working time, h. 5.4.1.2 The operating hour productivity is calculated according to formula (6): E,
Where: E.—Operation hour productivity, t/h; T,
Operation time during the production test, h,
Q.——Workload during the production test, t. The shift hour productivity is calculated according to formula (7):
Where: E
Shift hour productivity, t/h:
T.—Shift time during the production test, h. The working hour productivity is calculated according to formula (8):
Machine failure time T
Time for replacing screens and hammers
Time for cleaning residual materials
E,= E(T,+ T,)
Where: E
Working hour productivity, t/working hour;
Shift working hours of the unit operator, working hours; T. —Shift working hours of a unit auxiliary personnel (such as batching, feeding, unloading, bundling and debris removal, etc.), working hours. 5.4.1.5The rated unit power hour productivity is calculated according to formula (9): Ep
Where: Ep-—Rated unit power hour productivity, t/(kW.h); The rated power of the total supporting power of a unit, kW. P
5.4.2The power consumption per ton of material is calculated according to formula (10):
Where, G.
-Power consumed per unit of work Quantity, kW·h/t; G.—Power consumption of production check shift. kW·h. 4
·（5）
Reliability in use is calculated according to formula (11):
Reliability in use, %;
Wherein.K-—
JB/T731594
K=,,×100
T,-—-Fault elimination time of the unit during each shift during the production test, h. 5.4.4 Convenience of adjustment and maintenance is calculated according to formula (12): MT
Wherein: K-convenience of adjustment and maintenance, %;
T—Time for each adjustment and maintenance of the unit during the production test, h. Shift time utilization is calculated according to formula (13): 5.4.5
Wherein, K
Shift time utilization of the unit, %.
5.4.6 Working time before first failure
× 100
·(12)
The operating time from the start of the production test to the first part damage in the unit (excluding the operator's violation of the provisions of the instruction manual, the time of damage and failure caused by human factors), shall be recorded in Table 16. Test report
The test report shall include the following contents:
Test overview; state the purpose of the test, the model, name, number of units, the research and development unit and the unit providing the prototype, the units participating in the test, the test time and location.
Prototype introduction: introduce the structure and main features of the prototype, the main working principle and process. b.
Test conditions and analysis: briefly describe the test conditions investigated or measured, analyze whether they are representative and their impact on the test, and explain the test instruments and equipment used.
Evaluation.
Test result analysis: Summarize the data measured and the phenomena observed in the test, according to 4.1 and 5.1. Make a comprehensive conclusion on the prototype: Make a clear conclusion based on the analysis of the test purpose and test results. Attachments: relevant test data tables, figures, special reports, physical and chemical reports and relevant photos and user opinions, etc. Table 1
Technical characteristics of the unit
Unit name and model:
Test location:
Unit model
Overall dimensions
Installed capacity
Recorder:
Manufacturer name:
Measurement date:
Manufacturer name
Unit weight
Working form
Measurer:
Rated productivity
Factory price
Operation Number of people
Unit name and model:
Test location:
Recorder:
Crusher
Mixer
Raw grain elevator
Powder feeding device
JB/T731594
Technical features of the units
Manufacturer name:
Measurement date:
Spindle speed
Productivity
Spindle speed
Spindle speed
Productivity
Spindle speed
Productivity
Record of measurement of unit volume weight and moisture content of raw materials Table 3
Unit name and model:
Test location:
Unit volume weight
Moisture content
Unit volume weight
Moisture content
Measurer:
Sampling volume
Sampling weight
Unit volume weight
Sample weight (difference)
Sample weight (dry)
Relative moisture content
Sampling volume
Sampling weight
Weight per unit volume
Sample weight (wet)
Sample amount (dry)
Relative moisture content
Manufacturer name:
Measurement date:
(form, purpose, model)
Measurer:
Average value
Recorder:
JB/T 7315--94
Test environment measurement record sheet
Atmospheric pressure
Site conditions
Measurer:
Recorder:
Note: Site conditions refer to the size of the space where the unit under test is located, whether it is ventilated or not, and the size of other mechanical influences, etc. Table 5 Crusher performance test record
Unit name and model:
Crusher model:
Motor rated power
Motor rated efficiency
Spindle speed
No-load power
Load power
Production efficiency
Crushing particle size
Number of kilowatt-hour meter turns/kilowatt-hour diagram
Pure working time
Power consumption
No-load power
Load degree
KWh meter solid number
Pure working time
Power consumption
Load power
Load Loading degree
Productivity
Power consumption per ton of material
8-mesh analysis sieve should have no oversize
Test location:
Manufacturer name:
kw·h/t
16-mesh analysis sieve should have less than 20% oversize
Recorder:
Measurer:
Note: Screening test is conducted on the powder to make it all pass through the 8-mesh analysis sieve, and the oversize on the 16-mesh analysis sieve is not more than 20%. If it exceeds the above requirements, the powder machine screen and other parts that affect the particle size can be adjusted to meet the requirements, and "none" should be filled in the column of "8-mesh analysis sieve should have no oversize". In the column of "16-mesh analysis sieve should have less than 20% oversize", fill in the percentage of oversize in the sample. Table 8 alternates. 7
Unit name and model:
Test location:
Motor rated power
Motor rated efficiency
Spindle speed
No-load power
Load power
Production efficiency
Measurer,
No-load comparison
JB/T7315-94
Table 6 Mixer performance test record
Mixer model:
Electricity meter turns/kWh turns
Pure working time
Power consumption
No-load power
Load degree
Electricity meter diagram/kWh circuit
Mixer worker Working cycle
Power consumption
Load power
Load degree
Productivity
Power consumption per ton of material
Number of batches per hour
kW·h/t
Name of manufacturer:
Measurement date
Recorder:
Table 7 Performance test record of main conveying device Unit name and model:
Test location:
Motor rated power
Motor rated efficiency
Spindle speed
Name and model of conveying device:
Manufacturer:
Measurement date:
No-load power
Load power
Production efficiency
Measurer:
Number of kilowatt-hour meter turns/kilowatt-hour diagram
Pure working time
Power consumption
No-load power
Load degree
Number of kilowatt-hour meter turns
Pure working time
Power consumption
Load power
Load degree
Material conveying volume
Productivity
Power consumption per ton of material
JB/T731594
Continued table 7
kw·h/t
Unit performance test measurement record
Unit name and model,
Test location:||t t||Total rated power of unit motor
No-load power
Load power
Production efficiency
Total amount of three batches of materials
Total amount of powder and reduced materials
Number of kilowatt-hour meter circles/kilowatt-hour diagram
Operation time
Power consumption
No-load power
Negative degree
Number of kilowatt-hour meter circles/kilowatt-hour circles
Pure working time
Power consumption
Load power
Load degree
Productivity
Power consumption of materials
Manufacturer:
Measurement date:
kw·h/t
Recorder:
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