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CN-224221460-U - Coal mill with millstone convenient to replace

CN224221460UCN 224221460 UCN224221460 UCN 224221460UCN-224221460-U

Abstract

The utility model provides a coal mill convenient for replacing millstones, which relates to the technical field of coal mills and comprises a coal mill body, a support frame and slide plates, wherein the support frame is arranged on one side of the coal mill body, slide blocks are arranged on two sides of the inside of the support frame in a sliding manner, the slide blocks are driven to move through driving parts, the upper ends of the slide plates are hinged in front of two groups of slide blocks, the upper ends of the slide plates face to a maintenance opening of the coal mill body, elastic stretching rods are hinged below two ends of one side of the support frame, and the slide plates can be driven to move downwards along the support frame through the slide blocks and are matched with the hinged connection of the elastic stretching rods to rotate downwards and stretch, so that the slide plates incline, the upper ends of the slide plates face to the maintenance opening of the coal mill body, slide and are convenient to discharge after dumping, the slide plates are convenient to use, manual direct transportation is not needed, the probability of staff injury is reduced, and the working efficiency is improved.

Inventors

  • LI WANLI
  • YANG XIAOJUN
  • Ma Guiguo
  • ZHANG ZHIBING
  • LU PENGFEI

Assignees

  • 邹平县宏旭热电有限公司
  • 山东宏桥新型材料有限公司

Dates

Publication Date
20260512
Application Date
20250512

Claims (7)

  1. 1. The coal mill with the millstone convenient to replace comprises a coal mill body (1), a support frame (2) and a slide board (3), and is characterized in that the support frame (2) is arranged on one side of the coal mill body (1), sliding blocks (4) are slidably arranged on two sides of the inside of the support frame (2), the sliding blocks (4) are driven to move through a driving part, the upper ends of the slide board (3) are hinged in front of the two groups of the sliding blocks (4), and the upper ends of the slide board (3) face to a maintenance port of the coal mill body (1); elastic stretching rods (5) are hinged below two ends of one side of the support frame (2), and one ends of the two groups of elastic stretching rods (5) are hinged with the lower ends of two sides of the slide board (3) respectively.
  2. 2. The coal mill with the grinding disc convenient to replace according to claim 1, wherein a connecting column (6) is arranged below one side of the supporting frame (2), and the connecting column (6) is connected with the coal mill body (1).
  3. 3. The coal mill with the grinding disc convenient to replace according to claim 1, wherein the driving part comprises a threaded screw rod (7) and a motor (8), both sides of the inside of the supporting frame (2) are respectively provided with an inner groove, the threaded screw rod (7) is rotatably arranged in the inner grooves, the motor (8) is arranged above the supporting frame (2), the output end of the motor (8) is connected with the threaded screw rod (7), and the threaded screw rod (7) penetrates through the sliding block (4) and is in threaded fit.
  4. 4. The coal mill with the grinding disc convenient to replace according to claim 1 is characterized in that the inner sides of the two groups of sliding blocks (4) are respectively provided with a hinge shaft (9), and the upper ends of the sliding plates (3) are hinged with the two groups of hinge shafts (9).
  5. 5. The coal mill with the grinding disc convenient to replace according to claim 1, wherein the elastic stretching rod (5) comprises an outer sleeve (10) and an inner inserting rod (11), the inner inserting rod (11) is movably inserted into the outer sleeve (10), one end of the inner inserting rod (11) is provided with a limiting plate (12), and an extension spring (13) is connected between the limiting plate (12) and one end of the inner part of the outer sleeve (10).
  6. 6. The coal mill with the grinding disc convenient to replace according to claim 5, wherein hinge plates (14) are arranged below two ends of one side of the supporting frame (2), one end of the outer sleeve (10) is hinged with the hinge plates (14), one end of the inner inserting rod (11) far away from the outer sleeve (10) is provided with a hinge joint (15), and the hinge joint (15) is hinged with the slide plate (3).
  7. 7. A coal mill with a grinding disc convenient to replace according to any one of claims 1-6 is characterized in that the surface of the slide plate (3) is covered with a grease film, and two sides of the slide plate (3) are provided with baffle plates (16).

Description

Coal mill with millstone convenient to replace Technical Field The utility model relates to the technical field of coal mills, in particular to a coal mill with a millstone convenient to replace. Background The medium speed coal mill is coal processing equipment with the working rotation speed of 50-300 rpm, has the core functions of converting blocky coal into fine powder through extrusion, grinding and drying, and is widely applied to the fields of electric power, metallurgy, building materials, chemical industry and the like. In the coal-fired power generation, the coal-fired power generation device is used as a key auxiliary machine, combustion efficiency is improved through efficient grinding, emission is reduced, the coal-fired power generation device is used for preparing coke for smelting in the metallurgical industry, and the coal powder preparation device is used for preparing coal powder in cement production in the building material field. The equipment pulverizes coal through the relative motion of the grinding disc and the grinding roller, realizes drying and fineness classification by matching with a hot air system, has the advantages of compact structure, low power consumption, low noise, stable operation and the like, is particularly suitable for large-scale powder making requirements, and becomes important equipment for high-efficiency utilization of coal; The medium speed coal mill continuously works for a long time, is continuously rubbed and extruded by materials, the hardness of the ground materials is higher, friction and impact are continuously generated on the grinding disc in the grinding process, the friction force between the grinding disc and the materials can be increased due to improper grinding pressure, the abrasion resistance of the material of the grinding disc is insufficient, and finally the grinding disc of the coal mill is seriously worn and needs to be replaced. When the mill is replaced and assembled, a proper lifting device is used for lifting the new mill, a worker pushes the new mill into the coal mill by using the hack lever, before that, the old mill is directly and manually carried down, and the old mill is easy to be injured by direct carrying, so that potential safety hazards exist. Disclosure of utility model Aiming at the problems, the utility model provides the coal mill with the grinding disc convenient to replace, which is convenient to use, does not need manual direct transportation, reduces the probability of injury of staff and improves the working efficiency. The utility model aims at realizing the purpose by adopting the following technical scheme that the coal mill with the grinding disc convenient to replace comprises a coal mill body, a support frame and a slide board, wherein the support frame is arranged on one side of the coal mill body, slide blocks are arranged on two sides of the interior of the support frame in a sliding manner, the slide blocks are driven to move by a driving part, the upper ends of the slide board are hinged in front of the two groups of slide blocks, and the upper ends of the slide board face to a maintenance port of the coal mill body; Elastic stretching rods are hinged below two ends of one side of the support frame, and one ends of the two groups of elastic stretching rods are hinged with the lower ends of two sides of the slide board respectively. The coal mill is further improved in that a connecting column is arranged below one side of the support frame and connected with the coal mill body. The driving part comprises a threaded screw rod and a motor, wherein both sides of the inside of the support frame are respectively provided with an inner groove, the threaded screw rod is rotatably arranged in the inner grooves, the motor is arranged above the support frame, the output end of the motor is connected with the threaded screw rod, and the threaded screw rod penetrates through the sliding block and is in threaded fit. The sliding blocks are characterized in that the inner sides of the two groups of sliding blocks are respectively provided with a hinge shaft, and the upper ends of the sliding plates are hinged with the two groups of hinge shafts. The elastic stretching rod is further improved in that the elastic stretching rod comprises an outer sleeve and an inner inserting rod, the inner inserting rod is movably inserted into the outer sleeve, a limiting plate is arranged at one end of the inner inserting rod, and a stretching spring is connected between the limiting plate and one end of the inner portion of the outer sleeve. The further improvement is that the lower parts of two ends of one side of the support frame are respectively provided with a hinged plate, one end of the outer sleeve is hinged with the hinged plates, one end of the inner inserting rod, which is far away from the outer sleeve, is provided with a hinged joint, and the hinged joint is hinged with the slide plate. The slide board is further imp