JB/T 941-2000 This standard merges and revise JB/T 941-80 "Basic Parameters of Inclined Wheel Heavy Medium Coal Preparator" and JB/T 2734-82 "Technical Conditions of Inclined Wheel Heavy Medium Coal Preparator", and enriches the relevant Contents of test methods and inspection rules. This standard specifies the type, basic parameters, technical conditions, test methods, inspection rules, marking, packaging, transportation and storage of the inclined wheel heavy media coal separator. This standard applies to inclined wheel heavy media coal separators. This product is mainly used for sorting lump coal and serves as main washing, re-washing and waste removal equipment. JB/T 941-80 was first released in 1980; JB/T 2734-82 was first released on September 8, 1982. JB/T 941-2000 Inclined Wheel Heavy Medium Coal Preparator JB/T941-2000 Standard download and decompression password: www.bzxz.net

ICS73.120
D96
JB
Machinery Industry Standard of the People's Republic of China
JB/T941—2000
Inclined Wheel Heavy Medium Coal Preparator|| tt||Heavy-medium inclined lifting wheel separator2000-03-30 Released
National Machinery Industry Bureau
Released
Implemented on 2000-10-01
JB/T9412000| |tt||Foreword
This standard merges and revised JB/T941-80 "Basic Parameters of Inclined Wheel Heavy Medium Coal Preparator" and JB/T2734-82 "Technical Conditions of Inclined Wheel Heavy Medium Coal Preparator", and enriches it Concerning the content of test methods and inspection rules, this standard will replace JB/T941-80 and JB/T2734-82 from the date of implementation. Appendix A of this standard is a reminder appendix.
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 Xueqian, Zhang Honghui, Li Zeli, Xu Hua, and Huang Jialin. 1
1Scope
Machinery Industry Standard of the People's Republic of China
Inclined wheel heavy medium coal separator
Heavy-mediuminclinedliftingwheel separatorJB/T 941-2000
Replaces JB/T941-80
JB/T2734-82
This standard specifies the type, basic parameters, technical requirements, test methods, inspection rules, marking, and packaging of the inclined wheel heavy media coal separator , transportation and storage.
This standard applies to the inclined wheel heavy media coal separator (hereinafter referred to as the coal separator). This product is mainly used for sorting lump coal and serves as main washing, re-washing and grinding equipment.
2 Reference standards
The provisions contained in the following standards constitute provisions of this standard by being quoted 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. GB191—1990
GB/T13306—1991
GB/T13384—1992
JB/T 1604—1998
JB/T9050.1—1999||tt| |3 Types and basic parameters
Packaging, storage and transportation pictorial signs
Signs
General technical conditions for mechanical and electrical product packaging
Mining machinery product model compilation method
Cylindrical gear reducer
3.1 The coal preparation machine should be made of inclined lifting wheel type.
General technical conditions
3.2 The product model expression method shall comply with the provisions of JB/T1604. L
z
x-
separating tank width, m
inclined wheel
dense medium coal separator
gravity mineral processing equipment
3.3 The main parameters and dimensions of the coal preparation machine should comply with the requirements in Figure 1 and Table 1. The National Machinery Industry Bureau approved the implementation on 2000-10-01 on 2000-03-30
1
sticker
JB/T 941—2000
picture
Parameter name
Processing
Capacity
Separating tank
Discharge wheel
Coal discharge wheel
Shape
Size| |tt||Number
Value
Raw coal processing capacity
Specifications
t/h
Maximum coal discharge volume
Maximum discharge Quantity
Width
Volume
Diameter D
Number of revolutions
Motor power
Diameter d
Number of revolutions|| tt||t/h
t/h
mm
m
mm
r/min
kw||tt| |mm
r/min
Motor power kw
Length
Width W
Height H
Machine weight
Note
mm
mm
mm
LZX-1.2Www.bzxZ.net
65~95
45
190||tt ||1200
2.0
3200
5.0
7.5
1100
9.0
2.2
4440
3310
3600
11.5
JB/T941-2000
Table 1
LZX-1.6
100 ~150
88
147
1600
5.5
4000
2.3
7.5
1650
7.0
2.2
5130
4350
4460
17.5
LZX-2.0
150 ~200
110
202
2000
8.0
4500
2.3
7.5
1650
7.0
2.2
5770
4990
4690
22.0
LZX-2.6
200 ~300
143
196
2600
13.0
4500
1.6
10.0
2000
6.0
2.2
5740
5590
5430
24.5
LZX-3.2
250 ~350
232
277
3200
19.0
5500
1.6
10.0
2000
5.8
4.0
6720
6450
5780
33.5
LZX-4.0
350 ~500
325
429
4000
30.0
6660
1.6
10.0
2200
5.3
4.0
6990
7730
6690
43.0
LZX-5.0
450 ~600
662
560
5000
64.0
7800
1.0
22.0
2200
5.3
4.0
10200
8350
7450
99.0
1LZX-1.2 inclined wheel heavy medium coal preparation The lower limit of the feed particle size of the machine is allowed to be 6mm, and the lower limit of the feed particle size of the four specifications of LZX-1.6, LZX-2.0, LZX-2.6 and LZX-3.2 is allowed to be 8mm, but it must be stated in the order contract. 2 The maximum coal discharge amount and For the calculation of the maximum amount of research, see Appendix A (Appendix of Reminder) 4 Technical Requirements
4.1 The coal preparation machine shall comply with the requirements of this standard and be manufactured in accordance with the drawings and technical documents approved by the prescribed procedures. 4.2 Where this standard does not The specified technical conditions should comply with the relevant standards. 4.3 All parts of the separation tank, fixed plate and support in the coal preparation machine that are below the suspended liquid level must not seep water after welding. All lining plates of the coal preparation machine adopt intermittent welds to facilitate replacement after wear. 4.4
4.5. No water seepage is allowed at the bolted joints of the sorting trough, fixed plate and bracket. 5. The parallelism error of the overflow weir to the installation base surface should not be greater than 3mm per 1000mm. 4.6
4.7
The mechanical properties of the materials soaked in the suspension should not be less than 16Mn. : The coal discharge wheel should rotate flexibly and smoothly without any jamming. 4.8
4.9 The verticality error between the vertical sieve plate of the grinding wheel and the bottom sieve plate should not be greater than 4mm within the full height. 0 The end face runout of the bottom screen plate of the row grinding wheel should not be greater than 2mm on a wheel diameter of 1000mm4.10
4.11
The gap between the bottom screen plate and the support of the row grinding wheel should not be larger than 5mm. JB/T941—2000
4.12 The conical surface of the runner hub and the conical surface of the main shaft are required to be in uniform contact, and their contact area should not be less than 65%. 4.13 The large hexagonal nut at the top of the spindle taper surface should be tightened, and there should be no gap or looseness. 4.14 The spindle device should rotate flexibly without jamming. 4.15 The mechanical properties of the main shaft material should be no less than 45 steel, and the quenching and tempering hardness is 197~235HB. 4.16 The radial displacement of the cross slide coupling (i.e. floating coupling) should not be greater than 0.04d (d is the diameter of the connected shaft ), the angle deviation should not be greater than 30, and the gap between the joint surfaces should be 1~2mm. 4.17 The coal discharge wheel reducer should comply with the regulations of JB/T9050.1. 4.18 After the row grinding wheel reducer is assembled, run it without load for 2 hours. The operation should be smooth and normal. There should be no impact vibration, abnormal noise, and no oil leakage.
4.19 The temperature rise of the bearing parts of the coal preparation machine should not exceed 40℃, and the maximum temperature should not exceed 70℃. 4.20 The scope of delivery of the complete set includes the complete set of mechanical parts and the electric motor used for the transmission of the grinding wheel and the coal discharge wheel. 5 Test methods and inspection rules
5.1 Each coal preparation machine must pass the manufacturer's inspection before leaving the factory. When leaving the factory, it should be accompanied by documents proving that the product quality is qualified. 5.2 Each coal preparation machine shall use the oil penetration method to inspect the tank welds, which shall comply with the provisions of 4.3. 5.3 The coal preparation machine should undergo final assembly, appearance inspection and 2-hour dry running test in the manufacturing plant. The dry running test shall comply with the requirements of 4.8, 4.14, 4.17 and 4.18.
5.4 When the coal preparation machine cannot be assembled and tested at the manufacturer, it must be assembled and tested and assembled between components. The inspection results should comply with the requirements of 4.8, 4.10, 4.11, 4.14, 4.16, 4.17 and 4.18. 5.5 Each coal preparation machine should undergo a clean water leakage test, a 2-hour no-load test and a continuous 48-hour load test on-site, and comply with the provisions of 4.3, 4.5 and 4.19.
5.6 Type inspection shall be carried out when the coal preparation machine has one of the following circumstances: a) After formal production, there are major changes in structure, process or materials that may affect product performance; b) When production is resumed after a long-term suspension; | |tt||c) During normal production, once every 50 units are produced; d) When the national quality supervision and inspection agency proposes type inspection requirements. 5.7 Type inspection should be conducted on one product that has passed the factory inspection. If the product fails the inspection, double inspection should be carried out. 5.8 Type inspection items should include all the requirements of this standard. 6 Marking, packaging, transportation and storage
6.1 Each product should have a product label fixed in a conspicuous place, and the type and size of the label should comply with the regulations of GB/T13306. The content includes: a) product name and model;
b) main technical parameters;
c) date and serial number of the factory;
d) name of the manufacturer.
6.2 The packaging of the coal preparation machine should comply with the regulations of GB/T13384, and the packaging, storage and transportation icons and marks should comply with the regulations of GB191. 6.3 The delivery sign and the outer wall of the packaging box should indicate the following: a) product name and model;
4
JB/T941-2000
b) manufacturer name and date of manufacture And factory number: c) Contract number, packaging number;
d) Receiving location and unit name;
e) Equipment net weight, gross weight, appearance dimensions and packaging box number, etc., and indicate Lifting line. 6.4 All exposed processing surfaces should be coated with anti-rust oil and wrapped with oil paper or plastic cloth. 6.5 Packaging boxes and wrapping parts should comply with land and water transportation and loading and unloading requirements. 6.6 The wrapped metal structural parts should prevent transportation deformation and facilitate lifting. 6.7 Electrical equipment and small parts should be packed into boxes, and random technical documents should be placed in plastic bags and placed in a box marked "Documents here".
Random technical documents include:
a) Complete delivery list and packing list;
b) Product quality certification documents;
c) Product instruction manual;
d) Relevant drawings to facilitate user installation and debugging. 3. The coal preparation machine should be stored in the open air with rainproof facilities, and maintenance should be carried out every 12 months. 6.8
Maximum coal discharge Qi calculation formula
A1
where: B——width of sorting trough, m;
H——coal flow thickness, m ;
JB/T 941-2000
Appendix A
(Appendix of prompts)
Calculation method of maximum coal discharge volume and maximum discharge research volume Qi=3600BHVY coal discharge Middle discharge coal
dmax +dmn
H=
2
t/h
............. .
(can be corrected according to the feed particle size composition) dmax, dmn—upper and lower limits of feed particle size, m; v—coal flow velocity, m/s;
Y coal discharge— True density of a row of coal, t/m;
Φ row of coal - loose coefficient of a row of coal.
2 Calculation formula for maximum grinding volume
A2
Q2=60ntVβY grinding in grinding
In the formula: n - number of grinding wheel rotations in one row, r/ min; t - the number of lifting buckets in a row of grinding wheels:
V - the maximum volume of each lifting bucket, m; h
4t
h - the height of the lifting bucket, m;
D1, Dz——outer diameter and inner diameter of grinding wheel, m;β——filling coefficient;
Y grinding row-by-row true density, t/m:||tt ||Medium row grinding
The loose coefficient of first row grinding.
(D? - D)
The recommended reference values ??for the maximum coal discharge volume and maximum discharge volume of A3 are shown in Table A1. Table A1
Model
LZX-1.2
LZX-1.6
LZX-2.0
LZX-2.6
LZX-3.2|| tt||LZX-4.0
LZX-5.0
Maximum coal discharge
Q
t/h
45
88| |tt||110
143
232
325
662
Maximum research volume
Q
t /h
190
147
202
196
277
429
560
m /s
0.15
0.25
Yapai coal
t/m3
1.30
1.40
t/h
Process
Parameters
Medium discharge coal
0.50
0.40
B
0.30
0.35 ||tt || | 0.60 | For reference, calculations must be made according to specific conditions when selecting.
6
People's Republic of China
Machinery Industry Standards
Inclined Wheel Heavy Media Coal Preparation Machine
JB/T941—2000
Machinery Published and distributed by the Academy of Science
Printed by the Institute of Mechanical Sciences
(No. 2, Shoudi South Road, Beijing
Format 880×1230
Postcode 100044)
Number of words 14,000
1/16
Print sheet 3/4
First printing in August 2000
First edition in August 2000
Print count 1-500
No.
Price 12.00 yuan
2000-066
Mechanical Industry Standard Service Network: 0000
L/ar
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