This standard specifies the type, basic parameters, dimensions and technical conditions of peripheral rubber wheel drive thickeners. This standard applies to the design, manufacture and acceptance of peripheral rubber wheel drive thickeners (hereinafter referred to as thickeners). JB/T 1992-1993 Peripheral rubber wheel drive thickener JB/T1992-1993 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T 1992-93
Peripheral rubber wheel drive thickener
Published on September 3, 1993
Ministry of Machinery Industry of the People's Republic of China
Implemented on July 1, 1994
Mechanical Industry Standard of the People's Republic of China
Peripheral rubber wheel drive thickener
Subject Content and Scope of Application
This standard specifies the type, basic parameters, dimensions and technical conditions of peripheral rubber wheel drive thickener. This standard applies to the design, manufacture and acceptance of peripheral rubber wheel drive thickener (hereinafter referred to as thickener). 2 Reference standards
GB3768
GB 9286
Rolling bearing steel ball
Basic test methods for low-voltage electrical appliances
Simplified method for determining the sound power level of noise sources
Scratching test for paint and varnish films
GB T 13306
GB2299
GB2300
3 Product classification
3.1 Type
Painting color and safety sign type, basic parameters and technical requirements for mining, engineering, lifting and transportation machinery products
Slewing bearing
According to the different structures and uses, the concentrator can be divided into the following two types; a.
Non-lifting concentrator;
Automatic lifting concentrator.
3.? Basic parameters and dimensions
The basic parameters and dimensions of the concentrator shall comply with the provisions in the table. Concentrator
NJ-15 9
NJZ-15/9
NJ-18 12
NJZ - 18/12
NJ-24 21
NJZ-24/21
NJ- 30 34
NJZ-30/34
NJ- 38 55
NJZ- 38/55
Inner diameter
Pool center
Approved by the Ministry of Machinery Industry on September 3, 1993
Rake frame rotation time
Brush frame minimum
Working torque
≤340
≤550
8.5～10.0
12.0~18.0
14. 0～20. 0
15.0~25.0
Lifting height
JB/T 1992—93
Replace JB1992-76
Transmission motor lifting motor
1994-07-01implementation
NJ—45/68
NJZ--45/68
NJ—53/84
NJZ-53/84
Concentration tank
Inner diameter
Pool center
JB/T 1992-93
Working torque
Time per revolution of the cake rackLowest rake
Lifting height
≤840
16.0~26.0
18.0~30.0
Drive motor,
Lifting motor
Note: Time per revolution of the cake rack refers to the time range (non-speed regulation). One or more can be selected within this range according to user requirements during design. 3.3 Model description
3.4 ​​Marking example
Z - 30 34
Working torque, 10 kN·m2
Inner diameter of thickening tank, m
Automatic cake lifting
-Rubber wheel drive
Thickener
a. The inner diameter of the thickening tank is 30m, the working torque is 340kN·m, and the peripheral rubber wheel drive thickener without cake lifting is marked as: thickener NJ-30/34JB/T1992-93
The inner diameter of the thickening tank is 30m, the working torque is 340kN·m, and the peripheral rubber wheel drive thickener with automatic cake lifting is marked as b.
Thickener NJZ-30/34JB/T1992-93bzxz.net
4 Technical requirements
4.1 The thickener 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 The thickener is suitable for working under the following conditions: a. The feed particle size is 0~3 mm;
b. The feed concentration is 1% to 25%.
4.3 All parts and components must be inspected and qualified, and purchased and outsourced parts must have qualified certification documents before they can be assembled. 4.4 The mechanism of the concentrator should be as follows:
a. No oil leakage into the concentrator tank;
Easy to install, repair and lubricate;
Equipped with an overload alarm device.
4.5 The central slewing bearing of the concentrator should generally use a single-row cross roller slewing bearing or a single-row four-point contact ball slewing bearing, and comply with the provisions of JB2300. If the manufacturer manufactures the central slewing bearing by itself, it must meet the following requirements: a. The raceway surface must be quenched and the hardness must not be less than 40HRC. There must be no defects such as sand holes, pores, shrinkage, etc. on the surface; b. The steel ball should comply with the provisions of GB308.
4.6 The collector device should be:
The insulation between the collector rings should be good. There should be no breakdown phenomenon when the withstand voltage test is carried out for 1 minute under the condition of 2000V test voltage: a.
The spring that presses the brush should ensure that the brush and the collector ring are in close contact when they rotate relative to each other, and the surface of the spring should be treated with anti-corrosion; the surface of the collector ring in contact with the brush should not have defects such as sand holes and pores. JB/T 1992—93
4.7 The welds of each part should be flat, and defects such as burn-through, cracks, slag inclusions, and undercuts are not allowed. 4.8 The larger-sized parts of the concentrator should have lifting rings, lifting ears, lifting holes, etc. 4.9 The exposed rotating parts of the concentrator should have a light protective cover or shell. 4.10 The transmission arm and trough frame leading to the center of the concentrator should be equipped with a walkway and railings. The temperature rise of the bearings of each part shall not be greater than 35℃, and the maximum temperature shall not exceed 70℃. 4.11
The automatic target lifting mechanism of the automatic lifting concentrator should be flexible and correct. 4.12
4.13 The exposed non-cutting metal surface of the machine should be painted with primer and topcoat. The paint should be evenly applied without defects such as paint peeling, flaking, flow marks, cracks, etc. The total thickness of the paint film shall not be less than 74μm; the adhesion of the paint film shall not be lower than level 2 in GB9286, and the paint color shall comply with the provisions of JB2299. 4.14 The noise sound pressure level of the concentrator shall not be greater than 85dB (A) when it is working. 4.15 The concentrator should have the following reliability and durability indicators: a. Trouble-free working time shall not be less than 1 year; b. Service life shall not be less than 15 years.
4.16 Scope of supply of concentrator set:
a. Complete set of mechanical parts;
b. Motor and control part:
c. Spare parts specified in the order contract.
5 Test method
5.1 Whether the mechanism leaks oil in Article 4.4 and the bearing temperature in Article 4.11 shall be checked during the test of the drive and lifting device running idle for 2 hours.
5.2 The pressure resistance test in Article 4.6a shall be carried out in accordance with Article 6.3 of GB998. 5.3 The quality of the weld in Article 4.7 shall be observed with the naked eye. 5.4 For the automatic target lifting mechanism in Article 4.12, the slideway part shall be assembled, and the slide seat and the guide rail shall slide relative to each other to check whether they are unobstructed and free of jams.
5.5 The appearance quality of the paint in Article 4.13 shall be observed with the naked eye, and the thickness of the paint film shall be measured with a magnetic thickness gauge. The adhesion of the paint film shall be tested according to the method specified in GB9286.
5.6 The noise inspection in Article 4.14 shall be measured according to the rectangular hexahedron method specified in GB3768 when the drive and lifting device are running. 6 Inspection rules
6.1 The concentrator must be inspected and qualified by the manufacturer's technical inspection department before it can leave the factory. When leaving the factory, it must be accompanied by documents proving that the product quality is qualified.
6.2 The concentrator should undergo factory inspection and type inspection. 6.2.1 Each concentrator should undergo factory inspection to check whether the concentrator meets the requirements of Articles 4.4a, 4.6.4.7.4.11, 4.13 and 4.14 of this standard. For automatic target lifting concentrators, Article 4.12 should also be inspected. 6.2.2 In any of the following situations, the concentrator should be subjected to type testing to check whether it meets all the requirements of this standard. Trial type identification of new products or old products transferred to the factory for production; a.
After formal production, if there are major changes in structure, materials, and processes that may affect product performance; during normal production, an inspection should be carried out every 5 years; c.
When the product is discontinued for 3 years and production is resumed;
When the inspection results are quite different from the last type inspection; e.
f. When the national quality supervision agency proposes a type inspection requirement. 7 Marking, packaging, transportation and storage
7.1 Each concentrator should be equipped with a product label in an appropriate and obvious position. Its type and size should comply with the provisions of GB/T13306 and indicate the following:
Manufacturer name and trademark;
b. Product name and model;
c. Main technical specifications;
d. Factory number and manufacturing date.
JB/T 199293
7.2 The concentrator should be packaged and wrapped in parts and should meet the requirements of land and water transportation. The exposed processed surface of the machine should be treated with anti-corrosion and wrapped with oil paper and plastic film.
7.3 The outer wall of the packing box should have obvious text markings, including: a.
Receiving station, receiving unit;
Contract number, product model and name;
Manufacturer name and trademark;
Gross weight, net weight, box number and overall dimensions: d.
Center of gravity, lifting line, storage and transportation mark.
Nude and wrapped parts should be marked with a sign, the content of the sign is the same as Article 7.3. 7.4
7.5 Products should be stored in a warehouse or under a shed that can be ventilated, rainproof and sunlight-proof. 7.6 The following technical documents should be attached:
Product general drawing, installation drawing, wearing parts drawing and electrical control schematic diagram: product manual;
Product certificate;
Packing list.
8 Manufacturing Guarantee
8.1 Under the condition that the user complies with the transportation, storage, installation and use rules stipulated in this standard and the product manual, the manufacturer shall ensure that the concentrator meets the requirements of this standard.
8.2 Within 18 months from the date of shipment and no more than 12 months of use, if the concentrator is damaged or cannot work normally due to poor manufacturing quality, the manufacturer shall repair or replace it for the user free of charge. Additional Notes:
This standard was proposed by the Washing Equipment Sub-Technical Committee of the National Technical Committee for Standardization of Mining Machinery. This standard is under the jurisdiction of Shenyang Mining Machinery Research Institute. This standard was drafted by Shenyang Mining Machinery Factory. The main drafter of this standard is Li Chengcai.
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