HG/T 2649-1995 Alkali-return buried scraper conveyor HG/T2649-1995 standard download decompression password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
HG/T2649-95
Alkali-return buried scraper conveyor
1995-01-10 Issued
Ministry of Chemical Industry of the People's Republic of China
1995-05-01 Implementation
Chemical Industry Standard of the People's Republic of China
Alkali-return buried scraper conveyor
Subject content and scope of application
HG/T2649-95
This standard specifies the design, manufacture, test and inspection rules of alkali-return buried scraper conveyor (hereinafter referred to as conveyor). This standard is applicable to conveyors with an installation angle not exceeding 30°, an alkali-return temperature not exceeding 250℃, and matched with external alkali-return steam heating furnaces. Other similar conveyors can also be used as a reference. 2 Reference standards
GB1801
Technical conditions for high-quality carbon structural steel
Basic types and dimensional tolerances and fits of weld grooves for gas welding, manual arc welding and gas shielded welding. Tolerance zones and fits of holes and shafts up to 500mm. GB2649
GB2651
GB3077
Method for sampling mechanical properties test of welded joints
Tensile test method for welded joints|| tt||Technical conditions for alloy structural steel
GB10596.1 Types and basic parameters of buried scraper conveyors GB10596.2
Technical conditions for buried scraper conveyors
GB10596.3 Test methods for buried scraper conveyors Cast carbon steel for general engineering
GB11352
3 Design
3.1 The layout of each component of the conveyor should be reasonable and designed in a standardized and serialized manner. 3.2 Materials
3.2.1 The materials of the main parts of the conveyor should comply with the following regulations and should have a material inspection certificate. 3.2.1.1 The materials of the chain plate, pin shaft, sleeve and bolts connected to the scraper chain should comply with the requirements of GB3077, and the mechanical properties of the materials should not be lower than the requirements of the 40Cr grade.
3.2.1.2 The materials of rollers and head wheel shafts, tail wheel shafts and other parts shall meet the requirements of GB699, and their material mechanical properties shall not be lower than the requirements of grade 45.
3.2.1.3 The materials of head wheels, tail wheels, sprockets and other parts shall meet the requirements of GB11352, and their material mechanical properties shall not be lower than the requirements of grades ZG310~570.
3.2.2 Purchased parts shall meet the requirements of the corresponding standards and shall have product quality certificates. 3.3 In addition to being adaptable to the easy flying of materials and the unevenness of feeding, the conveyor should also be adapted to the following characteristics of the materials: moisture content not greater than 1%;
b. Bulk density 0.5~1.0t/m;
c. Particle size not greater than 2mm; bzxz.net
d. Temperature not greater than 250℃.
3.4 ​​The conveying capacity of the conveyor is calculated as follows: Ministry of Chemical Industry of the People's Republic of China 1995-01-10 Approved for implementation on May 1, 1995
In the formula, Q-
264995
Q=3600B·H·e0.n
-Calculated conveying capacity, m/h;
-Effective width of machine slot, m;
Height of machine slot, m;
-Tilt coefficient, selected according to the specified value in Table 1;-Speed ​​of conveyor chain, m/s;
-Conveying efficiency, %.
Tilt angle α
Tilt coefficient
5
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