Reversing roller device
In order to change the moving direction of the conveyor belt, a redirection device is set. The redirection device has two types: redirection roller and redirection support mixing group.
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Function of changing direction and rolling Profile:
Change the winding direction of the tape so that the tape can form an endless closed ring. The redirection drum is used on the no-load return empty section of the belt motor and can be used as the tail drum of the conveyor. The tensioning drum constituting the tensioning device is 180 ° redirection, and the two redirection rollers on the upper part of the vertical tensioning device are 90 ° redirection. The transmission angle of the belt drum and the belt drum is changed from about 45 ° to about 45 °.
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Diversion and mixing group:
The grooved supporting rod used for carrying branch belt in belt conveyor is required by the layout method of conveyor belt from inclined to horizontal section or from horizontal to inclined section. During the transition from horizontal to circular arc, the edge of the strip has additional tension in the convex arc section. In order to make its value not exceed the allowable limit of the strip, the belt will be cracked. The distance between idlers in this section is 1 / 2-1 / 2.5 of the distance between straight sections.
Loading and unloading device
The device between each section of the belt conveyor and to unload the material to the tail of the next section by using the head drum. These devices are mainly composed of cover shell, coal chute and guide chute.
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Arrangement of loading and unloading device:
In order to ensure the uniform operation speed of the coal belt conveyor and the reliability of the falling pipe of the belt conveyor, and to reduce the wear of the belt conveyor and the falling pipe of the belt conveyor, So as to prevent the deviation of the belt, the accumulation and scattering of materials are not allowed at the loading point, and the drop of materials at the loading place shall be reduced as far as possible. In particular, it is necessary to prevent large pieces of coal from falling directly onto the conveyor belt from a very high place, resulting in the damage of the belt due to the impact of coal. In order to reduce the impact of the loading point and prevent the strip surface from being scratched or even broken down, buffer mixing or buffer suspension idlers shall be used at the loading point. The loading and unloading point shall be located so that the materials fall between two groups of mixing instead of on a group of supporting wheels. The spacing of supporting wheels at the loading point shall be within 0.4-0.6m.
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Requirements for the shape of coal chute:
The overall dimension and angle of the coal drop pipe shall be conducive to the passage of normal coal, wet coal, relatively sticky coal, medium washing coal and other coal. Generally, the inclination angle of the coal drop pipe shall not be less than 55 ° – 60 °. If it is wet coal, it shall be increased. In addition, the coal drop pipe shall have a large enough flow area to ensure the smooth flow of materials in the pipe. In order to avoid the long strip sundries mixed in the materials, such as angle steel, wood block, etc., from being stuck between the lower part of the coal drop pipe and the guide chute, As a result, the belt is scratched longitudinally. It is best to expand the lower part of the coal chute connected with the guide chute forward to reduce the possibility of jamming. At the same time, in order to prevent the working face in the coal chute from being worn, the coal chute can be made of thick steel plate or lined with wear-resistant materials such as cast iron plate and rubber.
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Tee coal chute:
A three-way coal chute is needed to make the coal transported by the conveyor fall to two belt conveyors or other equipment at will. The coal feeding direction is controlled by the baffle reversing mechanism. The reversing mechanism should be light and reliable. Its structural feature is that it is composed of a baffle made of two steel plates welded on the shaft and a ball bearing supporting the shaft, which reduces the resistance of the switching baffle. The baffle can be switched manually or driven by pneumatic or electric actuator. Now most of them use hydraulic push rod.
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Guide chute
The guide chute is installed on the receiving conveyor belt and fixed on the conveyor frame to make coal fall.
The coal falling in the pipe will not be scattered, and can quickly accumulate into a stable shape on the center of the conveyor belt.
The shape of the guide chute shall have sufficient height and section, and its dimensions are generally: the length of the guide side plate l = (1.25-2) B, and the height of the guide side plate H = (0.3-0.5) B. In terms of structure, in order to facilitate assembly and disassembly, it is usually made into a section of about one meter, which is divided into three sections: front section, rear section and through section.
Ingrid Maldine is a business writer, editor and management consultant with extensive experience writing and consulting for both start-ups and long established companies. She has ten years management and leadership experience gained at BSkyB in London and Viva Travel Guides in Quito, Ecuador, giving her a depth of insight into innovation in international business. With an MBA from the University of Hull and many years of experience running her own business consultancy, Ingrid’s background allows her to connect with a diverse range of clients, including cutting edge technology and web-based start-ups but also multinationals in need of assistance. Ingrid has played a defining role in shaping organizational strategy for a wide range of different organizations, including for-profit, NGOs and charities. Ingrid has also served on the Board of Directors for the South American Explorers Club in Quito, Ecuador.
