Some standard content:
JB/T10171—2000
Appendix A of this standard is a reminder appendix.
This standard is proposed and managed by the National Technical Committee for Standardization of Mining Machinery. The responsible drafting unit of this standard is Anshan Mining Machinery Co., Ltd. The main drafters of this standard are Zhang Weizangping, Liu Xianghua, Xu Mingli, Wang Zuojun and Huang Jialin. 590
1 Scope
Machinery Industry Standard of the People's Republic of China
Flip-flow screen
Flip-flow screen
JB/T 10171 ---2000
This standard specifies the product classification, technical requirements, test methods, inspection rules, signs, labels, instructions for use, packaging, transportation and storage of flip-flow screens.
This standard applies to flip-flow screens. This product is mainly used for dry screening of materials containing water, mud, powder, small particle size, high viscosity and easy to block mesh holes.
2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB191-1990 Pictorial markings for packaging, storage and transportation
GB/T 1239.4--1989
Technical conditions for hot-rolled cylindrical helical springs
GB/T 1804—1992
GB/T 6388—1986
GB 9969. 1--1988
General tolerances Unindicated tolerances for linear dimensions
Marks for receiving and delivering transport packaging
Instructions for use of industrial products
GB/T 13306—1991
GB/T 13384-—1992
JB/T 1604-1998
JB/T4042—1999
JB/T 5496—1991
SH/T 0380--1992
3 Product classification
General technical conditions
Electromechanical product packaging
Mining machinery product model compilation method
Vibrating screen test method
General technical conditions for vibrating screen manufacturing
Compound lithium-based grease
3.1 Relaxation screening single drive and double drive two types. Its structure is shown in Figure 1 and Figure 2. Approved by the State Bureau of Machinery Industry on March 30, 2000, and purchased on October 1, 2000
JB/T 10171--2000
1-inner screen box; 2-outer screen box; 3-leaf spring; 4-screen plate; 5-inner cross beam: 6-outer cross beam; 7-connecting rod spring device; 8-transmission device; 9-buffer device; 10-motor bracket; 11-support frame; 12-vibration isolation spring Figure 1 Single-driven relaxation screen
1-inner screen box: 2-outer screen box; 3-leaf spring; 4-screen plate; 5-inner cross beam; 6-outer cross beam; 7-connecting rod spring device; 8-transmission device; 9-screen machine frame; 10-vibration isolation spring; 11-support frame Figure 2 Double-driven relaxation screen
3.2 The model representation method of relaxation screen shall comply with the provisions of JB/T1604. -
Screen surface length, dm
Screen surface width, dm
Type code: B is screen with protective layer (rigid screen) -Drive mode: D is single drive, S is double drive flip screen
Other screens
Flop screen (elastic screen) Number of layers: double-layer screen is 2, single-layer screen is not marked 592
JB/T 10171---2000
The basic parameters of flip screen should comply with the provisions of Table 1 Table 1
Screen surface specifications
SZD-1021
2SZD-1021
SZD-1042
(width×length)
1 000×2 100
1000×21002.10
1000×4 200
2SZD-10421 000 4 200
SZD-1550
1500X5040
2SZD-15501500X5040
SZD-2050
12 000X5 040
2SZD-2050 12 000 040l
SZS-1542
2SZS-1542
SZS-1555
2SZS-1555
1 500 × 4 200
1 500 x 4 200l
|1500X5500
SZSB-1555
1500×5500
SZS-1567
11500×6700
2SZS-1567
1 500× 6 700]
$ZS-2050
2SZS-2050
2000×5000110.00
(2 000× 5 000]
SZSB-2050
12 000 × 5 000]
SZS-2055
2 000×5 500
2SZS-20552 000X 5 500
1～30
15～25
upper 14～30
lower 1～13
1～30
upper 14~30
lower 1～~13
upper 14～30
lower 113
±14 ~30 |
4～10
115~25
upper 1430
lower 1～13
upper 14~30
lower 1～13
1～13
upper 14～30
lower 1～3
4～10
upper 14~～30
Next 1~~13
Up 14～30
下113
15~~25
15~~25
15～25
15～25
15～25
15～25
15～25
15～25
10～11||tt| |『Maximum
Material particle size
1 10~~11
110~11
10~-11
10~11
10~11
10~~11
10~11
[0~11
10～11
10～11
10～~11
10～11
Motor
Processing capacity
25～50
50-~100
50~~100
80~150
80~150| |tt||95~~180
120~240
120~240:
80~146
80~146
100~195
100~195
100~296
120240||tt| |120~~240
120~235
120~235
120~360
[140~255
140~255||tt| |SZSB-2055
SZS-2067
Screen surface specifications
(width×length)
2 000X 5 500
2 000× 6 700
2SZS-20672 000×6 700/13.40
JB/T 10171--2000
Table 1 (end)
Sieve hole size! ||tt| |1～13
4～10
Upper 14~30
Lower 1～13
SZSB-2067
12 000 × 6 700]| |tt||SZS-2090
2 000 X 9 000l
2SZS-20902000×9000
SZSB-2090 2 000X9 000
SZS-2290
2200×9000
2SZS-2290
12200×9000
SZSB-22902200X9000
14～30
Down 1～13
1～13
4～10
Up 14～30
Down 1～13
1～ 13
The mesh size of the protective layer screen is 40~50mm. Screen surface
15~~25
15~~25
15~25
15~~25
15~25
15～25www.bzxz.net
10~～11
10～11
10~11
10～11
10～11
110～11
Maximum person
Material particle size
Electric motor
Handling Quantity
140~400
170310
170~310
170~480
230-~420
230~420|| tt||1230650
255465
255~465
255-720
2The processing capacity in the table is based on the screening of coal with a moisture content of 7% to 8%, The product particle size is 6mm. The upper elastic sieve hole size is 20mm, and the sieve hole size is 40 mm
Technical requirements
4.1 Basic requirements
4.1.1 The relaxation screen shall comply with the provisions of this standard and JB/T5496, and shall be in accordance with the drawings and technical specifications approved by the prescribed procedures. 4.1.2 The unmarked tolerances of linear dimensions shall comply with the provisions of GB/T1804. The unmarked tolerances of machined parts shall comply with the requirements of Class M. The unmarked tolerances of welded parts and forgings shall comply with the requirements of Class ℃. The unmarked tolerances of castings shall comply with the requirements of Class 10. √ Level requirements. 4.1.3 Outsourced and purchased parts should have a certificate of conformity and can only be assembled after being inspected and qualified by the quality inspection department. 4.2 Machine performance requirements
4.2.1 Vibration frequency difference It shall not exceed ±2.5% of the specified value. 4.2.2 The amplitude difference between the symmetrical points of the two side plates of the outer screen box shall not exceed 0.5mm. 4.2.3 The lateral swing of the outer screen box shall not exceed 1mm. 4.2.4 The relative amplitude tolerance of the inner and outer screen boxes shall not exceed 1mm. 5 After the tension screen has been running for 8 hours, the maximum temperature of the transmission device bearing part shall not exceed 75℃, and the temperature rise shall not exceed 35℃. 4.2.5||tt| |No-load noise should be no more than 90dB (A). 4.3 Requirements for main components
4.3.1 Transmission
The oil grooves of the bearing seat and bearing cover, connecting rod body and bearing cover should be aligned. The bearings shall be filled with lithium-based grease that meets the requirements of SH/T0380, with the amount of grease filled being 1/3 to 1/2 of the bearing space. 4.3.2 Inner and outer screen frames
JB/T 10171--2000| |tt||4.3.2.1 The diagonal length tolerance of the inner and outer screen frames shall not exceed 1mm for every 1000mm. 4.3.2.2 The cross beams of the inner and outer screen frames shall not be spliced. 4.3.2.3 The tolerance of the spacing between the beams of the inner and outer screen frames shall not exceed ±1mm, and the cumulative tolerance of each spacing shall not exceed 1mm per 1000mm. 4.3.3 The screen plate
is made of polyurethane with a Shore hardness (A) of 85 degrees ±3 degrees. 4.3.4 Supporting frame
4.3.4.1 The length tolerance of the two diagonal lines on the upper plane of the supporting frame shall not exceed 1mm for every 1000mm. 4.3.4.2 The height tolerance of the corresponding parts on the left and right sides of the supporting frame shall not exceed 1mm. The difference should not exceed 3mm. 4.3.5 Vibration isolation spring device
4.3.5.1 The deviation of the stiffness of the vibration isolation rubber spring should not exceed ±5% of the specified value. 4.3.5.2 The deviation of the stiffness of the buffer spring should not exceed ±5% of the specified value. ±5%. The dimensional tolerance and geometric tolerance shall conform to the requirements of GB/T1239.4.
4.4 Assembly requirements
4.4.1 When assembling the screen body, the tightening torque of each bolt should comply with the requirements in the relevant drawings. 4.4.2 After the transmission device is assembled, the main shaft should rotate flexibly without obstruction. 4.5 Appearance quality
The painted surface should be uniform, and no defects such as bubbles, cracks, shedding and flow marks are allowed. 4.6 Safety protection requirements
The transmission part of the tension screen should have a safety protection cover . 4.7 Completeness
The complete set supply scope of the loose screen includes the mechanical part of the loose screen and the motor. 5 Test method
The test method of the loose screen shall comply with the relevant provisions of JB/T4042. 6 Inspection Rules
6.1 Inspection categories
The inspection of relaxation screens is divided into factory inspection and type inspection. 6.2 Delivery Inspection
6.2.1 Each relaxation screen must be inspected and qualified by the quality inspection department of the manufacturer before it can be shipped out of the factory. Documents proving the quality of the product must be attached when it is shipped out of the factory.
6.2.2 Delivery Check the following items:
a) vibration frequency;
b) amplitude difference between the two plates of the outer screen box;
c) lateral swing of the outer screen box;
d) Relative amplitude
e) Maximum temperature of the bearing part of the transmission device, temperature rise of the bearing part; f) No-load noise.
6.3 Type inspection
6.3.1 The relaxation screen shall be subjected to type inspection in any of the following cases: a) when the product is transferred to the factory for production;
b) after formal production, the product When there are major changes in structure, materials, or processes that may affect product performance; c) During formal production, a type inspection shall be conducted every 3 years or every 50 units produced; d) When resuming production after a long period of suspension ;
JB/T 10171—2000
e) When the factory inspection result is significantly different from the last type inspection; f) When the national quality supervision agency proposes a type inspection requirement. 6.3.2 Type inspection All requirements of this standard shall be included. 6.3.3 One relaxation screen shall be selected from the qualified products in the factory inspection for inspection. If the inspection fails, double sampling shall be conducted. If there are still unqualified products, each one shall be inspected.
7 Signs, labels and instructions for use
7.1 Each relaxation screen should have a product label fixed in an appropriate and obvious position. The label should comply with the provisions of GB/T13306 and indicate the following:||tt ||a) Manufacturer name and trademark;
b) Product name and model;
c) Main technical parameters;
d) Factory number;
e) Date of manufacture.
7.2 A product instruction manual should be prepared for the loose-fitting screen, and the instruction manual should comply with the provisions of GB9969.1. 7.3 The packaging mark of the loose-fitting screen should include the shipping packaging receipt and delivery mark and the packaging storage and transportation pictorial mark The marking shall comply with the requirements of GB/T6388 and GB191.
8 Packaging, transportation and storage
8.1 The packaging of the relaxation screen shall comply with the requirements of GB/T13384. Except for electrical equipment and V-belts, which are sealed, the rest can be wrapped or naked.
8.2 The exposed processed surface of metal parts should be coated with anti-rust oil and wrapped with plastic film. 8.3 The packaging box should be ventilated and waterproof. The outer wall should have obvious text markings and should comply with 7.3, the contents include: a) the name of the receiving station and the receiving unit:
b) the name of the shipping station and the shipping unit;
c) the contract number, product name and model;
d) gross weight, net weight, box number and overall dimensions; e) center of gravity, lifting line and storage and transportation diagram. 8.4 When naked, a sign should be tied in a conspicuous position and comply with the provisions of 7.3, and the center of gravity position should be marked on the product. 8.5 The following technical documents should be attached to the loose screen: a) packing list;
b) quality certification documents;
c) instruction manual;
d) product installation diagram.
8.6 The loose screen should be stored flat and stable, and keep a certain distance from the ground, and cannot be stacked. Rain, sun and water accumulation measures should be taken for outdoor storage.
8.7 The loose screen should be maintained once every year. 596
JB/T 10171-2000
Appendix A
(Suggested Appendix)
Calculation of processing capacity
The processing capacity of the relaxation screen is calculated by the average correction method. The calculation formula is as follows (A1): A7
Q-2FKKKKK, K.
(1--α)n
Where: Q——processing capacity, t/h;
q——screening capacity per unit area per hour (see Table A1), t/(m2·h); F-—effective area of the box surface, m2;
K,～K. -—correction coefficient (see Table A2);
α-.-The content of particles larger than the sieve hole size in the material, %; 7-screening efficiency.
Sand, gravel
inch/mm
(AI)
t/(m2-h)
Note: 9. The value is determined under the conditions that the content of particle size larger than the sieve hole size is 25%, the content of particle size smaller than half of the sieve hole size is 40%, and the screening efficiency is 95%. The types of materials given in the table are also limited. Table A2
Consideration factors
Influence of fine particles
Influence of coarse particles
Screening efficiency
Screening method
Surface moisture
Screen surface position
Content of materials with particle size smaller than half of the sieve hole size
/%
Content of materials with particle size greater than half of the sieve hole size
/%
Screening efficiency/%
Sieve hole size/mm
Material surface moisture content/%
Screen surface position
Screening conditions and coefficient values
506070
1.05|1.010.98|0.95j0.90.860.800.700.640.550.500.440.3560
Single-layer screen surface
1. 33 / 1. 17
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