Some standard content:
[CS 77.180
Machinery Industry Standard of the People's Republic of China
JB/T9985-1999
Sand Screening Machine
1999-05-14 Issued
Technical Conditions
2000-01-01 Implementation
State Machinery Industry Bureau
[B/T9985-1999
This standard is a revision of ZBJ61011-89 "Technical Conditions for Sand Screening Machines". When it was revised, only editorial changes were made according to relevant regulations, and the technical content remained unchanged.
This standard replaces ZBJ61011-89 from the date of implementation. This standard was proposed and approved by the National Technical Committee for Standardization of Forging Machinery. The responsible unit for this standard: Jinan Brick Forging and Pressing Machinery Research Institute. The main contributors to this standard: Bo Pin, Miao Dacheng. This standard was first issued in March 1989.
Machinery Industry Standard of the People's Republic of China
Sand Screening Machine, Technical Conditions
JB/T9985—1995
代7861011-0
This standard specifies the technical requirements, test methods, inspection rules and signs, packaging, transportation, etc. of sand screening machines. This standard is applicable to linear vibration type, multi-type and feedback type roller type (including formaldehyde screen) swing type mobile screen sand vision (hereinafter referred to as screen machine
Cited Standards
The texts contained in the following standards constitute the provisions of this standard through reference in the technical standards. When this standard is published, the revised versions shown are valid. All standards will be considered. Parties using non-standards should explore the possibility of using the latest versions of the following standards. GBT6991988
GR/T1184-1996
G Yue T1239.-1989
GET1S041992
GB:T 5226.1—1996
GB/T10093—1988
CB/T13306—1991
JB/T1644—1991
JB/T5364—1991
JB/T 6331.2--1992
JB/T8356.1—[996
3 Technical requirements
Technical conditions for high-quality carbon powder structural steel
Shape and position tolerances without tolerance values
Hot-rolled cylindrical screws and their application to the elasticity of the technical parts
: General tolerances Unmarked tolerances for linear dimensions
Industrial machinery and electrical equipment Part 1: General technical conditions Involute mesh column Cam accuracy
Technical requirements for machine tools
Sand treatment, quality equipment, etc. Measurement method for machine tool sound Pressure level measurement Machine tool packaging technical requirements
3.1 Sand screening machine shall comply with the requirements of the small standard and JD1 research and development 4, and shall be manufactured according to the drawings and technical documents approved by the prescribed sequence. 3.2 The air system shall include the requirements of GB/T5226.1. 3.3 Casting, forging, All the above parts shall comply with the provisions of the current standards. 3.4 The limit deviation of the final tolerance size of the machined parts shall comply with the m-level tolerance requirements specified in GB/T1804-1992. 3.5 The screen (super) pressing material shall meet the following requirements: 3.5.1 The screen bars of the chain screen shall be made of steel with a mechanical property of less than 16mm. 3.5.2 The woven screen shall be made of magnetic wire or high-rust steel wire. 3.6 The precision of the spring shall not be lower than the second grade precision specified in GB/T1239.41989, and the surface shall be strengthened by shot peening. 3.7 The gear tip shall meet the specification of GD/T10095-[988]8GJ. 3. The full cleanliness limit of the screen machine is as follows: a) The gearbox is greater than 0.03/00 of the full standard lower limit of the lubricating plate: Guohao Machinery Industry High 1999-05-14 approved ZHMH01-01 implementation
b) The vibrator is not more than 350m:
c) The bearing seat is not more than 350m:
JR/T99A5-1999
3.9 The noise of the sand screen when loaded is not more than B5dB (4) 3.10 The paint color of the sand screen shall comply with the provisions of JB/T5364. 3.11 The linear vibrating sand screening machine shall meet the following requirements: 3.11.1 The side panels shall be made of materials with strength and toughness not less than No. 10 in GB699-1988, and shall not be spliced. 3.11.2 The roughness R of the peripheral surface of the steel plate and profile shall not be greater than 25um, and shall not have burrs. 3.11.3 The flatness tolerance of the screen surface bracket after forming shall not be greater than 2mm per half square meter, and the deviation of the equal length of the two diagonals shall not be greater than 1mm per 100Dmm.
3.11.4 The actuator case shall be made of steel, or welded with steel plates with mechanical properties not less than Q235. 3.11.5 The crossbeam shall not be spliced in parallel. 3.11.6 The screen mesh shall be fixed firmly on the screen frame and shall not be moved once. 3.11.7 The springs used in each machine should be of equal height, and their deviation should not exceed 2mm. 3.11.8 When the straight velvet vibrating sand screening machine is in operation, there should be amplitude signs with a measurement error of less than 0.4mm at both ends of the screen and the appropriate position of the upper part.
3.12 The screen bars and screen frames should be treated to eliminate internal stress after welding. 3.13 The vibrator of the vibrating sand screening machine should meet the following requirements: 3.13.1 The vibrator must use oil-enhanced bearings. After the box and other parts are cleaned, the specified lubricating oil is injected, and no paint oil is allowed. The axial moment of the main shaft must be kept within the range of 0.7~2.2m. 3.13.2 The actuator parts should not have cracks and other visible defects, and welding repairs are not allowed on rotating parts. 3.13.3 The deviation of the effective time per minute shall not exceed ±2.5%. 3.13.4 The difference in the grip of the symmetrical points of the two measuring plates of the screen cabinet shall not exceed 20% of the average value of the double amplitude test of these two points, and the lateral vibration shall not exceed 1mm.
3.14 The screen body of the raft sand screening machine shall meet the following requirements: 3.14.1 The screen body size and screen body length, as well as the screen body measurement and chain length deviation of the cylinder screen, shall comply with the provisions of the relevant technical documents. 3.14.2 The screen is fixed on the screen cylinder body. After the screen is clamped with a press plate around the periphery and the overlap, the length of the steel wire extending out of the press plate shall not be less than 1/inch of each mesh.
3.14.3 The roller screen assembled on the circular screen must be fixed, and the parallelism of the driving axis and the circular axis shall comply with the provisions of GB/1184-1996. bZxz.net
3.15 The roller screen machine has a belt transmission device. The end surface of the pulley should not be more than 0.1mm in diameter. The end surfaces of the two pulleys should be on the same plane. The offset of the installation should not be greater than 0.7m1m3.16 The axis of the transmission device of the motor and reducer of the roller screen machine should be on the same straight line1. The normal displacement of the installation should not exceed 0.1mm for the shaft diameter of 65 or less, and should not exceed 0.2mm for the shaft diameter of 65mm. The axis of the circular screen should not be greater than 5mm3.17 The structure of the roller screen machine also stipulates:
It can be installed on the water flow line or the moving line of the sand. b) The sand screening machine should have observation, cleaning and maintenance holes on the single plate; ) Each hole should be covered and have a stopping device and a prohibition device for starting the sand screening machine. 2
JB/r9985-1999
.13 The shaft deviation of the roller crusher, coupling and active plate shall not exceed 0.3mm: 3.15 The swing mobile sand screening machine shall meet the following requirements: 3.19.1 The support frame and the support seat shall be matched with each other in coverage. Check with a 0.04mm feeler gauge. The pushable part shall not exceed 10% of the length of the connection, and the insertion depth shall not exceed 13 of the connection width. 3.19.2 The diameter deviation of the holes of each rocker support shall not exceed 0.5/100, and the deviation of the center distance of the shaft holes of two adjacent rocker support seats shall not be greater than ±u.05
3.20 The maximum temperature of the screen bearing shall not exceed 75%, the temperature rise of the sliding bearing shall not exceed 25, and the temperature rise of the rolling bearing shall not exceed 35%. 3.21 The screening efficiency of the screen machine shall be above 95%. 4 Test method
4.1 Vibration gauge
A resistor is attached to the inner surface of the main frame made of steel sheets with good elasticity, and a dynamic strain gauge is installed. One end of the gauge is fixed on a fixed bracket, and the other end is in contact with the upper surface of the screen side. The alarm is adjusted and the sand screening machine is started. The sensor is deformed by force, causing the resistor to have a signal and output. This signal is recorded by the dynamic resistance strain gauge and the optical recording oscilloscope to obtain the amplitude curve. The sensor is statically calibrated and the calibration curve of displacement and strain is obtained to measure the amplitude. In addition, the amplitude can be measured by a vibration sign with a line error of less than 0.4mm, or by a method with an error lower than the above method. 4.1 Frequency
When measuring the amplitude of the optical recording oscilloscope, input the time number into the record to measure the vibration frequency. In addition, other methods with an error of less than 2% can be used to measure the operating frequency. 4.3. Measuring angle of the moving surface
Place measuring and displaying signs at the two ends and the middle of the side plate of the screen, and visually observe the measuring angle of the moving surface of the sand screen. The scale of the signs is based on the half-line of the water, and the error does not exceed ±1°. The error between the standard and the screen surface does not exceed 1.5\. 4.4. The inclination angle of the screen surface
The inclination angle of the screen surface is calculated by measuring the ratio of the height difference of the screen surface to the length of the screen, and the sine is calculated, and it meets the requirements. 4.5. The noise is measured by using a grade meter according to the provisions of JB/T6331.2. 4.6. The screen machine is stopped after running for a certain time, and the highest temperature is measured. The running point thermometer is placed in the auxiliary bearing hole until the shaft is outside the shaft. When the bearing seat is provided with oil holes, the highest temperature at the bearing seat can be measured directly, and then the auxiliary bearing temperature rise is the difference between the highest temperature of the bearing and the ambient temperature,
4.7 Motor power
When the sand screening machine is running with positive belt, the motor power and the current at the time of starting should be measured with an accuracy level of 0.5 or a set of current attenuation meters with an error not exceeding ±2%. It can also be measured by the method of standard error not less than the above method. The motor power of the motor should not exceed the rated power of the motor.
4.8 Screening efficiency is calculated according to formula (1)
Where: Screening 5-1uraint The weight of the freshly sieved sand is 0%
IR/T9985-1909
9--The sand that has not passed the screen is re-screened 3-5 times, and the weight of the sand that has passed the screen is 0%. Under the specified production rate, sand feeding rate, sand layer thickness and continuous sand supply conditions, the water content of 3%-4% is continuously screened for 5.-10m, and 2 is measured. Then the remaining sand on the screen is screened 3~5 times and 0 is measured, and then the sand passing efficiency is calculated. 49 production
Under the conditions of the specified sand feeding rate, sand layer thickness and continuous sand supply, the old sand with a water content of 3%-4% is continuously screened for 2h, and the average production rate per hour is determined. The value meets the requirements of the technical specifications. For the sand screening machine above 40m to measure the production rate, the starting time can be changed to 1h, and the production rate can be measured at the user's factory. 4.10 Arbitration
When there is a dispute between the data measured by different test methods, the method with higher test accuracy shall prevail. 5 Inspection rules
Product inspection is divided into factory inspection and type inspection. 5.1 Factory inspection
Each sand screening machine shall be tested by the technical inspection department of the manufacturer for empty running, and can be shipped after receiving the technical inspection. When leaving the factory, it shall be accompanied by the product certificate, instruction manual, packing list, equipment list and drawings of each part. 5.2 Empty running test
After the product is assembled, it shall be tested for empty running. The product shall meet the following requirements. 5.2.1 Linear dynamic sand screening machine
Product paint color and appearance:
h) The number of vibrations per minute;
c) The amplitude difference of the symmetrical point on the side of the stirring pole; d) The degree of elasticity:
) Vibrator
5.1.2 Continuous type screening machine
) Check each fastening reverse connection part, there shall be no movement phenomenon) The roller screen rotates flexibly and smoothly, and there shall be no impact phenomenon:) The rotation of the circular screen shaft is smooth, and its axis excitation meets the requirements: The speed sensor runs in a straight line, the sound is even, and there shall be no irregular impact sound and periodic dust sound:) The temperature rise of the sliding bearing and the rolling bearing meets the requirements. 5.2.3 Dynamic mobile sand screening machine
The transmission device, the action of the connecting rod joint and the broadcast rod joint shall be flexible and reliable, coordinated and without abnormal sound. 5.3 Type inspection
Type inspection is carried out when one of the following conditions occurs: a) New products are tested regularly:
b) When the structure, process, or material is significantly changed: When production is stopped for one year and normal production is resumed:
d) When the belt is produced, it is carried out every two years
JB/T9985—1999
5.3.1 The installation of the sand screen and the added load balance shall meet the design requirements. After the idle running test is qualified, plastic inspection and load test of the following items shall be carried out: ||tt| |2) Bearing temperature rise and maximum temperature:
b) Noise:
center) Motor power;
) Screening efficiency:
e) Productivity,
5.3.2 Linear vibrating sand screening machine full inspection station test the following, a) Double amplitude:
b) Frequency:
c) Vibration direction angle;
d Screen surface angle,
5.3.3 Rolling sand screening machine type inspection, add inspection of roller and rolling contact area. The close wheel on the frame of the circular sand screening machine has good contact with the inlaid ring. When inspected by the color coating method, the contact area shall not be less than 5%. 3.4 The type inspection of the slow-moving mobile sand screening machine shall be carried out with a test stroke. The test method is the same as that of the double vibrating cap. The value shall meet the design requirements. 6 Marking, packaging, and transportation
6.1 Each product shall be fixed with a product label in a conspicuous position. The style and size of the label of the screening machine shall comply with the provisions of GB/13306. (.2 The exposed surfaces of the parts, components, accessories and spare parts of the screening machine shall be treated with anti-fouling treatment before packaging, and shall comply with the provisions of relevant standards.
&3 The packaging and labeling of the screening machine and its components shall be suitable for the requirements of water transportation and loading, and shall comply with the provisions of JB/T8356.1.3 Type inspection
Type inspection is carried out when one of the following conditions occurs: a) New products are inspected regularly:
b) When the structure, process, or material is significantly changed: When production is stopped for one year and normal production is resumed:
d) During production, it is carried out once every two years
JB/T9985—1999
5.3.1 The installation of the sand screening machine and the added load balance shall meet the design requirements. After the idle running test is qualified, plastic inspection and load test shall be carried out for the following items:
2) Bearing temperature rise and maximum temperature:
b) Noise:
center) Motor power;
) Screening efficiency:
e) Productivity,
5.3.2 The overall inspection station of linear vibration sand screening machine shall test the following: a) Double amplitude:
b) Frequency:
c) Vibration direction angle;
d Screen surface angle,
5.3.3 Type inspection of rolling sand screening machine shall increase the inspection of the contact area between the roller and the rolling circle. The close wheel on the frame of the circular sand screening machine has good contact with the inlaid ring. When inspected by the color coating method, the contact area shall not be less than 5%. 3.4 The type inspection of the slow-moving mobile sand screening machine shall be carried out with a test stroke. The test method is the same as that of the double vibrating cap. The value shall meet the design requirements. 6 Marking, packaging, and transportation
6.1 Each product shall be fixed with a product label in a conspicuous position. The style and size of the label of the screening machine shall comply with the provisions of GB/13306. (.2 The exposed surfaces of the parts, components, accessories and spare parts of the screening machine shall be treated with anti-fouling treatment before packaging, and shall comply with the provisions of relevant standards.
&3 The packaging and labeling of the screening machine and its components shall be suitable for the requirements of water transportation and loading, and shall comply with the provisions of JB/T8356.1.3 Type inspection
Type inspection is carried out when one of the following conditions occurs: a) New products are inspected regularly:
b) When the structure, process, or material is significantly changed: When production is stopped for one year and normal production is resumed:
d) During production, it is carried out once every two years
JB/T9985—1999
5.3.1 The installation of the sand screening machine and the added load balance shall meet the design requirements. After the idle running test is qualified, plastic inspection and load test shall be carried out for the following items:
2) Bearing temperature rise and maximum temperature:
b) Noise:
center) Motor power;
) Screening efficiency:
e) Productivity,
5.3.2 The overall inspection station of linear vibration sand screening machine shall test the following: a) Double amplitude:
b) Frequency:
c) Vibration direction angle;
d Screen surface angle,
5.3.3 Type inspection of rolling sand screening machine shall increase the inspection of the contact area between the roller and the rolling circle. The close wheel on the frame of the circular sand screening machine has good contact with the inlaid ring. When inspected by the color coating method, the contact area shall not be less than 5%. 3.4 The type inspection of the slow-moving mobile sand screening machine shall be carried out with a test stroke. The test method is the same as that of the double vibrating cap. The value shall meet the design requirements. 6 Marking, packaging, and transportation
6.1 Each product shall be fixed with a product label in a conspicuous position. The style and size of the label of the screening machine shall comply with the provisions of GB/13306. (.2 The exposed surfaces of the parts, components, accessories and spare parts of the screening machine shall be treated with anti-fouling treatment before packaging, and shall comply with the provisions of relevant standards.
&3 The packaging and labeling of the screening machine and its components shall be suitable for the requirements of water transportation and loading, and shall comply with the provisions of JB/T8356.1.
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