Some standard content:
Mechanical Industry Standard of the People's Republic of China
JB/T6910-93
Micro-metering pump
Published on 1993-07-13
Ministry of Machinery Industry of the People's Republic of China
Implemented on 1994-07-01
People's Republic of China
Mechanical Industry Standard
Micro-metering pump
JB/T6910-93
Published and distributed by the Machinery Standardization Research Institute of the Ministry of Machinery Industry Printed by the Machinery Standardization Research Institute of the Ministry of Machinery Industry (P.O. Box 8144, Beijing
Postal Code 100081)
Copyright reserved. No reproduction allowed
Format 880×12301/16
Printing sheet 7/8 Number of words 20,000
First edition in January 1994
First printing in January 1994
Print run 00,001-500
Price 6.00 yuan
No.: 1481
Mechanical Industry Standard of the People's Republic of China
Micro-metering
Subject content and scope of application
JB/T6910-93
This standard specifies the types and basic parameters, technical requirements, test methods, inspection rules, marking, packaging and storage of micro-metering pumps. This standard is applicable to micro-plunger metering pumps, micro-diaphragm metering pumps, micro-advection metering pumps and micro-electromagnetic metering pumps (hereinafter referred to as pumps) that convey corrosive and non-corrosive liquids with a temperature of -30-60℃ and a viscosity of 0.3-100mm/s and no solid particles. 2
Cited standards
GB2828
GB7783
GB9236
GB10089
GB/T13306
ZBJ71018
ZBJ72026
Tolerances and fits of common threads (diameter 1~355mm)Rolling bearing steel balls
Counting sampling procedures and sampling tables for batch inspection (applicable to inspection of continuous batches)Test methods for metering pumps
Technical conditions for metering pumps
Precision of cylindrical worm and worm gear
Hydraulic pressure and leakage test of reciprocating parts and componentsHydraulic pressure and leakage test of cooling, heating and ventilation equipment
Types and basic parameters
3.1 Type
See Table 1 for the types of micro-metering pumps.
Micro plunger metering pump
Micro diaphragm metering pump
Micro horizontal flow metering pump
Micro electromagnetic metering pump
3.2 Model
General technical conditions for packaging
The model of the motor-driven micro-metering pump is as follows: Approved by the Ministry of Machinery Industry on July 13, 1993
Drive mechanism type
Motor
Electromagnetic force
Hydraulic end type
Plunger type
Diaphragm type
Plunger type
|Plunger type, diaphragm type
Implemented on July 1, 1994
Model example:
JB/T6910-93
Special performance explosion-proof motors are indicated,
Ordinary motors are not indicated
Rated discharge pressure, MPa
Rated flow, mL/h
Micro-metering pump type code
The model of the horizontal flow plunger metering pump with a rated flow of 130mL/h, a rated discharge pressure of 3.2MPa and an explosion-proof motor is: WJP130/3.2B
The model of the micro-diaphragm metering pump with a rated flow rate of 160mL/h, a rated discharge pressure of 2.5MPa and an explosion-proof motor is: WJM160/2.5B
The model of the micro-plunger metering pump with a rated flow rate of 130mL/h, a rated discharge pressure of 3.2MPa and an explosion-proof motor is: WJ130/3.2B
The model of the electromagnetic force driven micro-metering pump is indicated as follows: The hydraulic end type is indicated by M for diaphragm type, and not indicated for plunger type
Rated discharge pressure, MPa||t t||Rated flow, mL/h
Micro electromagnetic metering pump code
Model example:www.bzxz.net
The model of the diaphragm micro electromagnetic metering pump with a rated flow of 500mL/h and a rated discharge pressure of 0.8MPa is: WJC500/0.8M
The model of the plunger type micro electromagnetic metering pump with a rated flow of 250mL/h and a rated discharge pressure of 1MPa is: WJC250/
Basic parameters (single)
3:3.1 The basic parameters of the WJ type micro plunger metering pump shall be as specified in Table 2. Table 2
Rated flow
Motor power W
Rated discharge pressure
Measuring accuracy
Rated flow
JB/T6910-93
Continued Table 2
Rated discharge pressure
The basic parameters of the WJM type micro diaphragm metering pump shall be in accordance with the provisions of Table 3. Table 3
Rated flow
Motor power
Rated discharge pressure
The basic parameters of the WJP type micro horizontal flow metering pump shall be in accordance with the provisions of Table 4. 8.00
Measuring accuracy
Measuring accuracy
Rated flow
JB/T:6910-93
Motor power
Rated discharge pressure
The basic parameters of the WJC type plunger type micro electromagnetic metering pump shall be in accordance with the provisions of Table 5-. Table 5
Rated flow
Rated discharge pressure
Measuring accuracy
Measuring accuracy
Rated flow
JB/T691093
Continued Table 5
Rated discharge pressure
The basic parameters of the WJC diaphragm micro-electromagnetic metering pump shall be in accordance with the provisions of Table 6. Table 6
Rated flow
Multi-joint structure
Rated discharge pressure
Measuring accuracy
Measuring accuracy
JB/T6910-93
The multi-joint structure can be arbitrarily combined according to the parameters specified in Table 2 and Table 3. When multi-joint is combined, the maximum torque applied to the worm shaft should not exceed the bearing capacity of the first worm shaft.
3.5 The plunger diameter of the pump shall be selected in accordance with the provisions of Table 7. Table 7
Plunger diameter
Technical requirements
The pump shall comply with the provisions of this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures. 4.1
The actual flow value of the pump under rated conditions shall not be lower than the rated flow value of the pump. 4.2
The ticket shall ensure reliable operation under 0%~100% relative stroke length and within the allowable adjustment range. 4.3
4.4The spherical tolerance of the metal ball of the pump inlet valve shall not be lower than the provisions of grade 5 in GB308. The spherical tolerance of the non-metallic ball shall not be lower than the provisions of grade 10 in GB308.
4.5The pressure pulsation of the horizontal flow metering pump is ±3%. 4.6The matching surface of the valve ball and the valve seat shall comply with the requirements of GB9236. For hydraulic diaphragm micro-metering pumps, the action of the safety valve in the oil chamber shall be sensitive and reliable. Its opening pressure shall be in accordance with the provisions of Table 8. The discharge pressure 4.7
is 1.051.15 times the opening pressure, and the return pressure should not be less than 0.8 times the opening pressure. If the oil chamber safety valve cannot ensure discharge, a pipeline safety valve should be added.
The rated discharge pressure of the pump Pa
The opening pressure of the safety valve P,
The automatic oil replenishment valve in the pump oil chamber should be operated under a vacuum of not less than 80%. The action should be sensitive and reliable. The valve group should be individually pressure-regulated after assembly, and should be locked and fixed after passing the test.
4.8 The parts and components of the pump that bear pressure should be subjected to a water pressure test, and the test pressure shall be in accordance with the relevant provisions of ZBJ71018. 4.9
For pumps with stroke length adjustment, the scale of the adjusting handwheel or the scale of the flow indicating knob and the plunger stroke length should be adjusted or measured to zero (or 100%). The zero point error of the stroke length should not exceed 0.2% of the maximum stroke length. 4.10
The accuracy of the hand wheel scale or the indication accuracy of the flow rate should be higher than the indication accuracy of ±0.1%. The pump supplied as a set should include:
Pump and motor or electrical controller;
Special tools necessary for installation and maintenance;
Connectors between the pipeline and the pump inlet and outlet;
Consumable parts (referring to single-unit consumable parts, see Table 9). Table 9
Parts name
Plunger bushing
Packing (or diaphragm)
Inlet and outlet valve seats
1 each
4.12 If the user complies with the provisions of the pump manual and uses it correctly, the manufacturer shall provide a one-year warranty within 18 months from the date of shipment. If the product is damaged or fails to work properly due to poor design or manufacturing quality.The manufacturer shall replace or repair it free of charge (except wearing parts). 6
5 Test method
5.1 Test system and parameter measurement
JB/T6910-93
5.1.1 The test generally adopts an open system, and the pipeline should be clean and free of rust. 5.1.2
The diameter of the pipe fittings and valves used in the system should not be less than the inlet and outlet diameters of the pump. 5.1.3 The high-pressure section of the system should be equipped with a corresponding safety valve. 5.1.4 The test medium is distilled water at room temperature, turbine oil or actual medium. 5.1.5 The test system should be set in a constant temperature room, and the humidity should be controlled above 70%. 5.1.6 Flow measurement requirements
5.1.6.1 The measurement method can adopt the mass method or the volume method. When the mass method is used, the measuring time of the scale range shall not be less than 1 minute, and the ratio of the sensitivity of the scale to the scale range shall not be greater than 0.05%; when the volumetric method is used, the measuring time of the capacity shall not be less than 1 minute, and the accuracy of the container shall be higher than 0.1% after calibration.
5.1.6.2 The flow measurement location is on the inlet or outlet side of the pump. 5.1.7 Discharge pressure measurement requirements
5.1.7.1 The discharge pressure uses a spring-type pressure gauge or pressure sensor. The range should be selected according to the test pressure. The reading should be within the range of 1/3 to 2/3 of the full scale of the instrument. The instrument accuracy measured for type inspection and sampling inspection shall not be lower than Class 0.5, and the factory inspection shall not be lower than Class 1.0. 5.1.7.2 The discharge pressure measurement location shall be set on the same section 6 to 10 times the outlet pipe diameter away from the pump outlet. When the discharge pressure of the pump is controlled by a regulating valve, the height between the pressure measuring hole and the valve should be no less than 300mm straight pipe section, and the diameter of the pressure measuring hole should be 1~4mm. 5.1.8 Time measurement requirements
Time measurement adopts the "one-point" timing method (the starting point and the end point of the timing are selected from the same reference point). The flow measurement time is not less than 1min, and the error of the timing instrument should not exceed 0.1%.
5.1.9 Input power measurement method
Use a dynamometer to directly measure the input power of the pump, or measure the value obtained by multiplying the input power of the driving motor and the efficiency of the motor.
5.1.10 The total error of the flow measurement of the test system should be less than 1/4 of the metering accuracy of the pump, and the total error of the system flow measurement of the factory inspection should be less than 1/2 of the metering accuracy of the pump.
5.1.11 The system error is calculated in accordance with the provisions of Appendix C (Supplement) of GB7783.5.1.12| |tt||Schematic diagram of test system
Flow measurement using inlet mass method, see Figure 1. Throttle valve
Pressure gauge①Must
Needle valve
Test system
Flow measurement using inlet volume method, see Figure 2. Water
Flow measurement using outlet mass method, see Figure 3. Reversing mechanism
Flow measurement using outlet volume method, see Figure 4
Directional mechanism
JB/T6910-=93
Calibration cylinder
Pressure gauge
Test pump
Needle valve
Test system
Throttle valve
Needle valve
Pressure gauge
Return to tester
5.2 Test contents and requirements Request
JB/T6910-93
5.2.1 Operation test and performance test shall be in accordance with the provisions of GB7783. 5.2.2 Flow calibration and measurement accuracy test shall be in accordance with the provisions of GB7783, and type inspection and sampling inspection shall be in accordance with the provisions of GB7783. 5.2.3
During factory inspection, the content of flow calibration test is the same as the relevant content in Article 5.2.2, but only the relative stroke length is measured at 10%, 30%, 5.2.4
50%, 75%, and 100%, and 5 groups of flow data are measured in sequence. The number of single flow values at each relative stroke length should be no less than 3. Measurement accuracy test content: Stability accuracy and linearity are flow data measured continuously at 100% relative stroke length; reproducibility accuracy These are three flow data measured discontinuously at 100% relative stroke length. 5.3 Data processing
Data processing and curve drawing shall comply with the provisions of GB7783. 6 Inspection rules
6.1 Each pump shall be inspected and qualified by the quality inspection department of the manufacturer and accompanied by a product certificate before it can leave the factory. 6.2 Various inspections of pumps shall comply with the provisions of Table 10. Table 10
Test items
Operation test
Performance test
Flow calibration test
Measuring accuracy test
Safety valve"
No-load test
Load test
Inspection type
Note: ①√ indicates that inspection should be carried out; X indicates that inspection is not carried out; O indicates that inspection is carried out as required. 1) Refers to the safety valve sensitivity inspection of hydraulic diaphragm micro-metering pumps. 6.3
Type inspection
Type inspection should be carried out in any of the following situations: a.
When the first prototype of a new product is produced and the old product is transferred to the factory for production: prototype of a series product (series products with lower power and lower discharge pressure than the prototype may not be subject to type inspection); when the old batch-produced products have major changes in design, process and materials (affecting quality). 6.4 Sampling inspection
Batch-produced products should be sampled and inspected regularly. When the basic prototype of a series product has been type-inspected, other products should be sampled and inspected. The number of sampling inspections shall be in accordance with the provisions of GB2828. 7 Marking, packaging and storage
7.1 Each pump shall have a product label fixed in a conspicuous position, and the label size shall comply with the provisions of GB/T13306. The nameplate should indicate the following information:
Manufacturer's name:
Product model and name or product mark;
Main technical performance and parameters (flow rate, mL/h; rated discharge pressure, MPa; measurement accuracy, %; pump speed, min\; voltage, V; current, A; frequency, Hz; motor power, kW; pump mass, kg): d.
Factory number and year and month of manufacture.12
Schematic diagram of test system
Flow measurement uses the inlet mass method, see Figure 1. Throttle valve
Pressure gauge① must
Needle valve
Test system
Flow measurement uses the inlet volume method, see Figure 2. Water
Flow measurement uses the outlet mass method, see Figure 3. Reversing mechanism
Flow measurement uses the outlet volume method, see Figure 4
Reversing mechanism
JB/T6910-=93
Calibration cylinder
Pressure gauge
Tested pump
Needle valve
Tested system
Throttle valve
Needle valve
Pressure gauge
Return to tester
5.2 Test content and requirements
JB/T6910-93
5.2.1 Operation test and performance test shall comply with the provisions of GB7783. 5.2.2 Flow calibration and measurement accuracy test shall comply with the provisions of GB7783, and type inspection and sampling inspection shall comply with the provisions of GB7783. 5.2.3
During factory inspection, the flow calibration test content is the same as the relevant content in Article 5.2.2, but only the relative stroke length is measured at 10%, 30%, 5.2.4
50%, 75%, and 100%, and 5 groups of flow data are measured in sequence. The single flow value at each relative stroke length should be no less than 3. Measurement accuracy test content: stability accuracy and linearity are the flow data measured continuously at 100% relative stroke length; reproducibility accuracy is the 3 flow data measured discontinuously at 100% relative stroke length. 5.3 Data processing
Data processing and curve drawing shall be in accordance with the provisions of GB7783. 6 Inspection rules
6.1 Each pump shall be inspected and qualified by the quality inspection department of the manufacturer and accompanied by a product certificate before it can be shipped. 6.2 Various types of inspections of pumps shall be in accordance with the provisions of Table 10. Table 10
Test items
Operation test
Performance test
Flow calibration test
Measuring accuracy test
Safety valve"
No-load test
Load test
Type of inspection
Note: ①√ indicates that inspection should be carried out; X indicates that inspection is not carried out; O indicates that inspection is carried out as required. 1) Refers to the safety valve sensitivity inspection of hydraulic diaphragm micro-metering pumps. 6.3
Type inspection
Type inspection should be carried out in any of the following situations: a.
When the first prototype of a new product is made and the old product is transferred to the factory for production: prototypes of series products (series products with lower power and lower discharge pressure than the prototype may not be subject to type inspection); old products produced in batches have major changes in design, process and materials (quality 6.4 Sampling inspection
Products produced in batches shall be sampled and inspected regularly. When the basic prototype of a series of products has been type-tested, other products shall be sampled and inspected. The number of units to be sampled and inspected shall be in accordance with the provisions of GB2828. 7 Marking, packaging and storage
7.1 Each pump shall be fixed with a product label in an obvious position, and the label size shall comply with the provisions of GB/T13306. The label shall indicate the following:
Manufacturer's name:
Product model and name or product mark;
Main technical performance and parameters (flow rate, mL/h; rated discharge pressure, MPa; metering accuracy, %; pump speed, min\; voltage, V; current, A; frequency, Hz; motor power, kW; pump mass, kg): d.
Factory number and year and month of production.12
Schematic diagram of test system
Flow measurement uses the inlet mass method, see Figure 1. Throttle valve
Pressure gauge① must
Needle valve
Test system
Flow measurement uses the inlet volume method, see Figure 2. Water
Flow measurement uses the outlet mass method, see Figure 3. Reversing mechanism
Flow measurement uses the outlet volume method, see Figure 4
Reversing mechanism
JB/T6910-=93
Calibration cylinder
Pressure gauge
Tested pump
Needle valve
Tested system
Throttle valve
Needle valve
Pressure gauge
Return to tester
5.2 Test content and requirements
JB/T6910-93
5.2.1 Operation test and performance test shall comply with the provisions of GB7783. 5.2.2 Flow calibration and measurement accuracy test shall comply with the provisions of GB7783, and type inspection and sampling inspection shall comply with the provisions of GB7783. 5.2.3
During factory inspection, the flow calibration test content is the same as the relevant content in Article 5.2.2, but only the relative stroke length is measured at 10%, 30%, 5.2.4
50%, 75%, and 100%, and 5 groups of flow data are measured in sequence. The single flow value at each relative stroke length should be no less than 3. Measurement accuracy test content: stability accuracy and linearity are the flow data measured continuously at 100% relative stroke length; reproducibility accuracy is the 3 flow data measured discontinuously at 100% relative stroke length. 5.3 Data processing
Data processing and curve drawing shall be in accordance with the provisions of GB7783. 6 Inspection rules
6.1 Each pump shall be inspected and qualified by the quality inspection department of the manufacturer and accompanied by a product certificate before it can be shipped. 6.2 Various types of inspections of pumps shall be in accordance with the provisions of Table 10. Table 10
Test items
Operation test
Performance test
Flow calibration test
Measuring accuracy test
Safety valve"
No-load test
Load test
Type of inspection
Note: ①√ indicates that inspection should be carried out; X indicates that inspection is not carried out; O indicates that inspection is carried out as required. 1) Refers to the safety valve sensitivity inspection of hydraulic diaphragm micro-metering pumps. 6.3
Type inspection
Type inspection should be carried out in any of the following situations: a.
When the first prototype of a new product is made and the old product is transferred to the factory for production: prototypes of series products (series products with lower power and lower discharge pressure than the prototype may not be subject to type inspection); old products produced in batches have major changes in design, process and materials (quality 6.4 Sampling inspection
Products produced in batches shall be sampled and inspected regularly. When the basic prototype of a series of products has been type-tested, other products shall be sampled and inspected. The number of units to be sampled and inspected shall be in accordance with the provisions of GB2828. 7 Marking, packaging and storage
7.1 Each pump shall be fixed with a product label in an obvious position, and the label size shall comply with the provisions of GB/T13306. The label shall indicate the following:
Manufacturer's name:
Product model and name or product mark;
Main technical performance and parameters (flow rate, mL/h; rated discharge pressure, MPa; metering accuracy, %; pump speed, min\; voltage, V; current, A; frequency, Hz; motor power, kW; pump mass, kg): d.
Factory number and year and month of production.
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