This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of coal jigs. This standard applies to coal jigs (hereinafter referred to as jigs). This machine is mainly used for sorting lump coal, fine coal and mixed raw coal for washing. JB/T 942-2000 Coal jig JB/T942-2000 standard download and decompression password: www.bzxz.net

ICS73.120
D96
JB
Machinery Industry Standard of the People's Republic of China
JB/T942-2000
Coal Jig||tt| |Jig for coal
Released on 2000-03-30
National Machinery Industry Bureau
Released
Implemented on 2000-10-01
JB/T9422000| |tt||Foreword
This standard merges and revised JB/T942-80 "L Type and Main Parameters of Jig for Coal Preparation" and JB/T3265-83 "Technical Conditions of Jig for Coal Preparation", and is published in The following main technical contents have been changed: - 6 varieties of jig specifications have been added; - the content on test methods and inspection rules has been enriched. This standard replaces JB/T942-80 and JB/T3265-83 from the date of implementation. This standard is proposed and administered by the National Mining Machinery Standardization Technical Committee. The unit responsible for drafting this standard: CITIC Heavy Machinery Company. The main drafters of this standard: Zhang Honghui, Gao Min, Wang Liping, Yao Jie, Huang Jialin. 1 Scope
Machinery Industry Standard of the People's Republic of China
Coal Jig
Jigforcoal
JB/T942-2000
Replaces JB/T942-80
JB/T3265—83
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of coal jigs.
This standard applies to coal jigs (hereinafter referred to as jigs). This machine is mainly used for sorting lump coal, fine coal and mixed raw coal for washing. Referenced standards
The provisions contained in the following standards constitute provisions of this standard through reference in this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision and parties using this standard should explore the possibility of using the latest version of the standard listed below. GB 191—1990
GB/T3768—1996
GB3797—1983
GB4720—1984
GB/T10095—1988
GB/T13306—1991
GB/T13384—1992
JB/T1604—1998
3 product categories
3.1 type
Packaging, storage and transportation pictorial mark||tt| | Acoustic sound pressure method for determining the sound power level of noise sources using a simple method of enveloping the measuring surface above the reflecting surface. Electronic control equipment. Part 2. Electronic control equipment equipped with electronic devices. Part 1. Low-voltage electrical appliances. Electronic control equipment. Involute cylinder. Gear accuracy
Plate
General technical conditions for mechanical and electrical product packaging
Mining machinery product model compilation method
a) Under-sieve air chamber jig: ||tt| |b) Side drum jig.
3.2 model
The model representation method shall comply with the provisions of JB/T1604. L
T
M
Qi Mo Coal
Jigging area, m
"G" means side drum type, "X" means under the screen Air chamber jig
Gravity mineral processing equipment
National Machinery Industry Bureau approved 2000-03-30 for implementation on 2000-10-01
10m2 under-screen air chamber jig representation It is: JB/T942-2000
LTX-10
18m2 side drum type coal jig, expressed as: under-screen air chamber jig
LTG-18M||tt ||3.3 Basic parameters
The basic parameters of the jig should comply with the provisions of Table 1. Side drum jig
Table 1
Jig area
m
6
8
10
12
14
16
18
20
24
30
32
35|| tt||40
Technical requirements
4
Mix into wash
0~100
0~100
0~100| |tt||0~100
0~100
0~100
0~100
0~100
0~100||tt ||0~100
0~100
0~100
0~100
feed particle size
finished coal
0 ~13
0~13
0~13
0~13
0~13
0~13
0~13
0~13
0~13
0~13
0~13
0~13
0~13|| tt | | 4.1 | 4.2
4.3 The working conditions of the jig should meet the following requirements: a) Ironware, debris and materials with excessive particle size must be removed before raw coal is washed; b) Feeding must be continuous and uniform:
c) Clean the screen plate in time to keep the screen holes unobstructed 4.4 The structure of the jig should ensure:
a) The pulsating water flow is evenly distributed in the jig chamber; b) It must be equipped with an automatically adjusted discharge device; c ) The jigging system and feng shui volume of each chamber can be adjusted separately; d) The jigging frequency can be changed;
e) The air chamber jig under the screen should have an air chamber liquid level detection device; 2||tt| |Block
Coal
13~100
13~100
13~100
13~100
13~100|| tt||13~100
13~100
13~100
13~100
13~100
13~100||tt| |13~100
13~100
mmWww.bzxZ.net
f) can be connected to the centralized control system;
g) facilitates inspection and repair.
JB/T942—2000
4.5 There shall be no leakage in the welds and bolt connection surfaces that are in contact with water and gas. 4.6 The position of the guide plates in each compartment of the machine body must be consistent, and the mutual offset between the guide plates in adjacent compartments must not be greater than 10mm. 4.7 The discharge device should operate flexibly and should not be stuck. 4.8 When the change in bed thickness is greater than 5mm, the discharge device should be able to automatically change the discharge speed. 4.9 The air valve device should operate flexibly, have good sealing performance, and be adjusted correctly and reliably. 4.10 In the transmission device, the accuracy level of the cylindrical gear should not be lower than level 8 specified in GB/T10095. The reducer must not leak oil, the cleanliness of the reducer should not exceed 400mg, and the measured noise under no load should not exceed 85dB (A). 4.11 The jig should meet the following safety requirements: a) Railings should be added to the pedestrian walkway, and a safety protective cover should be added to the transmission device: b) The noise produced by the jig during operation should comply with the provisions of the "Noise Hygiene Standards for Industrial Enterprises (Trial Draft)"; c) The insulation requirements of electrical equipment should comply with the regulations of GB4720 and GB3797. 2 A complete set of jig should include:
4.12
a) mechanical part of the jig (including motor); b) electronic control equipment;
c) spare parts and special tools.
5 Test methods
5.1 Climb the air valve and discharge device by hand to test their flexibility. 5.2 Conduct a 2-h no-load operation test to check the operation and sealing of the stroke valve, discharge device and reducer in 4.7, 4.9 and 4.10. 5.3 Check 4.8 by changing the measurement height of the bed sensor. 5.4 Check the adjustment characteristics of the damper system by adjusting the damper control device. 5.5 The noise of the jig should be tested according to GB/T3768. 5.6 Cleanliness of the reducer: Use SSW0.074/0.050 filter to filter the lubricant after the first run-in for 4 hours, then pour the kerosene into the box, and use a brush to clean all the lubricants. After installing the machine, drain out the cleaning oil and filter it. Put the filter and the dirt into a 120°C oven to dry for 1 hour. Take it out and put it in a desiccant to cool for 20 minutes. The weight of the dirt is the cleanliness. 5.7. Use the oil penetration method to detect leakage of welds and connection surfaces in contact with water, and use soapy water method to detect leakage of welds and connection surfaces in contact with gas. || tt |
6.2 Type inspection shall be carried out when the jig has one of the following circumstances: a) When there are major changes in structure, process or materials; b) When production is resumed after a long-term shutdown;
c) During normal production , once every 50 units produced; d) When the national quality inspection agency proposes type inspection requirements. 3
JB/T942—2000
6.3 Type inspection items shall include all requirements of this standard. 6.4 Type inspection shall be conducted on one product that has passed the factory inspection. If the inspection fails, it shall be doubled Sampling inspection 7 signs, packaging, transportation and storage
7.1 The jig should have a product label fixed in a prominent position. The label should comply with the regulations of GB/T13306, and its contents include: a) product model and name; ||tt| |b) Main technical parameters;
c) Manufacturing date:
d) Product number:
e) Manufacturer name.
7.2 The jig should be disassembled and shipped in a form that is convenient for transportation. Before disassembly, the assembly position of each component should be marked. 7.3 The machine body should be partially packaged, and the exposed processed surface should be coated with anti-rust grease and wrapped with plastic sheeting. 7.4 Transmission devices, air valves, electrical equipment and small parts should be packed into packaging boxes. 7.5 The random technical documents should be wrapped in a plastic bag and put into a wooden box, and the words "Technical Documents Here" should be marked on the outer wall of the box. Random technical documents include:
a) Complete delivery list and packing list;
b) Product quality certification documents;
c) Product instruction manual;
d) Product installation diagram.
7.6 The packaging of the jig should comply with the requirements of GB/T13384. 7.7 The storage and transportation marks of the jig packaging box should comply with the regulations of GB191, and the following content should be marked on the outer wall: a) Product model and name; || tt||b) Manufacturer name;
c) Factory date and factory number;
d) Contract number, packaging number;
e) Receiving unit and arrival station;| |tt||f) Net weight, gross weight, overall dimensions and lifting lines, etc. 7.8 The jig should be stored with rain-proof measures, and maintenance should be carried out every 12 months. Electrical equipment should be stored in a clean, dry room.
4
People's Republic of China
Mechanical Industry Standards
Coal Jig
JB/T942-2000
Mechanical Research Published and distributed by the Institute of Mechanical Science
Printed by the Institute of Mechanical Science
(No. 2, Shoudi South Road, Beijing
Postal Code 100044)
Printed sheet 1/2 words 10,000
Format 880×1230
1/16
First edition in August 2000
First printing in August 2000
Print run 1-500||tt ||No.
Price 10.00 yuan
2000-067
Machinery Industry Standard Service Network: 0000
L/ar
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