Coal mine screening equipment for coal mining

Abstract

The utility model relates to the technical field of coal mining equipment, and discloses coal mine screening equipment for coal mining, which comprises a bottom plate, and a screening mechanism and a moving mechanism are arranged on the top surface of the bottom plate. By arranging the screening mechanism, the first supporting boxes on the two sides and the screen drum are of a detachable structure, the time needed for equipment maintenance can be remarkably shortened, when the screen drum is abraded or blocked or breaks down, workers can quickly detach the screen drum to conduct inspection or maintenance or replacement, and the coal mine production efficiency is remarkably improved; a third hydraulic rod is arranged to move a radian plate, so that a fourth hydraulic rod drives an inserting rod to move up and down to move stones on the inner wall of a first through hole in the surface of a screen drum, the screen drum is rapidly cleaned, it can be ensured that a screen is kept clean, blockage and dust deposition are avoided, and when the screen is covered with impurities and coal dust, the screening efficiency can be remarkably reduced; and the gravels can be effectively prevented from blocking the screen drum, so that coal mine screening is facilitated.

Description

Technical Field

[0001] This utility model relates to the technical field of coal mining equipment, specifically a coal screening device used in coal mining. Background Technology

[0002] Coal washing is an indispensable process in the deep processing of coal. Coal directly mined from the mine is called raw coal. During the mining process, raw coal is mixed with many impurities, and the quality of coal is also different. Coal with low internal ash content and coal with high internal ash content are mixed together. Coal washing is an industrial process that removes impurities from raw coal or separates high-quality coal from low-quality coal.

[0003] Chinese patent disclosure CN209892966U discloses a coal screening equipment for coal mining. It includes a composite dry coal washing equipment body, with a frame matching the lower end of the body. A handle is connected to the side wall of the frame. Rubber shock-absorbing pads connect the equipment body and the frame, and both are fixedly connected. This allows for convenient movement of the composite dry coal washing machine by mine workers in complex underground environments without affecting its normal operation, thus improving mining efficiency and keeping pace with the mining progress.

[0004] However, it still has the following drawbacks: it cannot quickly process the screened coal, thus reducing coal processing efficiency. Therefore, we propose a coal screening device for coal mining to solve this problem. Utility Model Content

[0005] The purpose of this utility model is to provide a coal screening device for coal mining to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a coal screening device used in coal mining, comprising a base plate, wherein a screening mechanism and a moving mechanism are provided on the top surface of the base plate;

[0007] The screening mechanism includes a support component and a filter component, with the support component located on the side of the filter component;

[0008] The support assembly includes a first U-shaped plate, the bottom surface of which is hinged to the top surface of the base plate via a hinge post. A first through slot is formed on each of the two sides of the first U-shaped plate. A cylinder is provided on the left side of the first U-shaped plate, a first cavity is formed on the side of the cylinder, and a first feed pipe is formed on the top surface of the cylinder. A first motor is fixedly mounted on the side of the first U-shaped plate. First support boxes are rotatably mounted on each of the two sides of the first U-shaped plate via bearings, and second through slots are formed on the sides of each of the two first support boxes.

[0009] The filter assembly includes a sieve cylinder with several first through holes through its outer surface. Spring retaining rings are fixedly fitted on both sides of the sieve cylinder. Two first support boxes have first retaining grooves through their sides. The inner walls of the two first retaining grooves are respectively engaged with the outer surfaces of the two spring retaining rings. Several fixing plates are fixedly installed on the sides of the two first support boxes and the two sides of the sieve cylinder. The sides of the fixing plates are fixedly installed by bolts.

[0010] A further improvement is that the moving mechanism includes several first hydraulic rods, the sides of which are fixedly connected to the sides of the base plate. Two first through slots are opened through the top surface of the base plate. Support rods are fixedly installed on the inner walls of the two first through slots. A second U-shaped plate is also fitted on the outer surface of the two support rods. Two hydraulic cylinders are hinged to the inner side of the second U-shaped plate through hinge columns. The upper end faces of the output rods of the two hydraulic cylinders are respectively hinged to the bottom surface of the first U-shaped plate through hinge columns.

[0011] A further improvement is that a plurality of dampers are fixedly installed on the top surface of the base plate, and the top surfaces of the plurality of dampers are respectively fixedly connected to the bottom surface of the first U-shaped plate. The outer surface of the first motor output rod penetrates the side of the first U-shaped plate and extends into the interior of the first U-shaped plate. The end face of the first motor output rod is rotatably connected to the inner side of the first U-shaped plate through a bearing seat.

[0012] A further improvement is that a toothed ring is fixedly fitted on the outer surface of each of the two first support boxes, and two first gears are fixedly fitted on the outer surface of the first motor output rod. The end face of the first motor output rod is rotatably connected to the inner side of the first U-shaped plate through a bearing seat, and the bottom surfaces of the two toothed rings are respectively meshed with the sides of the two first gears.

[0013] A further improvement is that an L-shaped plate is fixedly provided on the side of the cylinder, a third limiting groove is provided through the top surface of the L-shaped plate, a second hydraulic rod is fixedly provided on the inner wall of the third limiting groove, and a third slider is fixedly provided on the end face of the output rod of the second hydraulic rod.

[0014] A further improvement is that the outer surface of the third slider is slidably connected to the inner wall of the third limiting groove, a third hydraulic rod is fixedly provided on the bottom surface of the third slider, an arc plate is fixedly provided on the end face of the output rod of the third hydraulic rod, a plurality of fourth hydraulic rods are fixedly provided on the bottom surface inside the arc plate, and a plug rod is fixedly provided on the lower end face of the output rod of the plurality of fourth hydraulic rods.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the coal screening equipment adopted in this coal mine has a detachable structure for the first support box and screen cylinder on both sides by setting a screening mechanism, which can significantly shorten the time required for equipment maintenance. When the screen cylinder is worn, blocked or malfunctions, the staff can quickly disassemble it for inspection, repair or replacement, which significantly improves the coal mine production efficiency.

[0016] By setting up a moving mechanism, the arc plate is moved by a third hydraulic rod, which in turn moves the fourth hydraulic rod up and down to move the stones on the inner wall of the first through hole on the surface of the screen cylinder. This quick cleaning of the screen cylinder ensures that the screen remains clean and avoids clogging and dust accumulation. When the screen is covered by impurities and coal dust, the screening efficiency will decrease significantly, affecting the coal grading effect. It can also effectively prevent gravel from clogging the screen cylinder, thus facilitating coal screening. Attached Figure Description

[0017] Figure 1 This is a front view of the structure of this utility model;

[0018] Figure 2 This is a partial side sectional view of the structure of this utility model;

[0019] Figure 3 This is a top view of the structure of this utility model;

[0020] Figure 4 This is a side view of the structure of this utility model;

[0021] Figure 5 This is a front sectional view of the structure of this utility model.

[0022] In the diagram: 1. Base plate; 2. Screening mechanism; 201. First U-shaped plate; 202. Cylinder; 203. First motor; 204. First support box; 205. Screen cylinder; 206. Spring block; 3. Moving mechanism; 300. Support rod; 301. First hydraulic rod; 302. Hydraulic cylinder; 303. Damper; 304. Gear ring; 305. First gear; 306. L-shaped plate; 307. Second hydraulic rod; 308. Third hydraulic rod; 309. Curved plate; 310. Fourth hydraulic rod; 311. Insert rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-5 This utility model provides a technical solution: a coal screening equipment used in coal mining, including a base plate 1, and a screening mechanism 2 and a moving mechanism 3 are provided on the top surface of the base plate 1;

[0025] The screening mechanism 2 includes a support component and a filter component, with the support component located on the side of the filter component;

[0026] The support assembly includes a first U-shaped plate 201, the bottom surface of which is hinged to the top surface of the base plate 1 via a hinge post. The first U-shaped plate 201 has a first through slot on each of its two sides. A cylinder 202 is provided on the left side of the first U-shaped plate 201. A first cavity is provided on the side of the cylinder 202. A first feed pipe is provided on the top surface of the cylinder 202. A first motor 203 is fixedly provided on the side of the first U-shaped plate 201. A first support box 204 is rotatably provided on each of the two sides of the first U-shaped plate 201 via bearings. A second through slot is provided on each of the two first support boxes 204.

[0027] The filter assembly includes a screen cylinder 205, with several first through holes through the outer surface of the screen cylinder 205. Spring retaining rings 206 are fixedly sleeved on both sides of the screen cylinder 205. Two first support boxes 204 have first retaining grooves through the sides of the screen cylinder 205. The inner walls of the two first retaining grooves are respectively engaged with the outer surfaces of the two spring retaining rings 206. Several fixing plates are fixedly installed on the sides of the two first support boxes 204 and the two sides of the screen cylinder 205. The sides of the fixing plates are fixedly installed by bolts.

[0028] The moving mechanism 3 includes several first hydraulic rods 301. The sides of the several first hydraulic rods 301 are fixedly connected to the sides of the base plate 1. Two first through slots are opened through the top surface of the base plate 1. Support rods 300 are fixedly installed on the inner walls of the two first through slots. The outer surfaces of the two support rods 300 are also fitted with second U-shaped plates. Two hydraulic cylinders 302 are hinged to the inner side of the second U-shaped plates through hinge columns. The upper end faces of the output rods of the two hydraulic cylinders 302 are respectively hinged to the bottom surface of the first U-shaped plates 201 through hinge columns. The second U-shaped plates are moved by setting the support rods 300, thereby adjusting the angle of the first U-shaped plates to facilitate the unloading of coal in the mine.

[0029] A plurality of dampers 303 are fixedly installed on the top surface of the base plate 1. The top surfaces of the dampers 303 are respectively fixedly connected to the bottom surface of the first U-shaped plate 201. The outer surface of the output rod of the first motor 203 penetrates the side of the first U-shaped plate 201 and extends into the interior of the first U-shaped plate 201. The end face of the output rod of the first motor 203 is rotatably connected to the inner side of the first U-shaped plate 201 through a bearing seat. The first motor 203 drives the first gear 305 to rotate, thereby rotating the gear ring 304, and then driving the screen cylinder 205 to rotate.

[0030] Two first support boxes 204 are respectively fixedly fitted with toothed rings 304 on their outer surfaces. Two first gears 305 are fixedly fitted on the outer surface of the output rod of the first motor 203. The end face of the output rod of the first motor 203 is rotatably connected to the inner side of the first U-shaped plate 201 through a bearing seat. The bottom surfaces of the two toothed rings 304 are respectively meshed with the sides of the two first gears 305.

[0031] An L-shaped plate 306 is fixedly installed on the side of the cylinder 202. A third limiting groove is opened through the top surface of the L-shaped plate 306. A second hydraulic rod 307 is fixedly installed on the inner wall of the third limiting groove. A third slider is fixedly installed on the end face of the output rod of the second hydraulic rod 307.

[0032] The outer surface of the third slider is slidably connected to the inner wall of the third limiting groove. A third hydraulic rod 308 is fixedly installed on the bottom surface of the third slider. An arc plate 309 is fixedly installed on the output rod end face of the third hydraulic rod 308. Several fourth hydraulic rods 310 are fixedly installed on the inner bottom surface of the arc plate 309. Insert rods 311 are fixedly installed on the lower end face of the output rods of the several fourth hydraulic rods 310. The position of the insert rods 311 is adapted to the position of the inner wall of the first through hole, thereby moving the falling stone and preventing the screen cylinder 205 from being blocked.

[0033] In use, by setting up the screening mechanism 2, coal is poured into the first feed pipe, and the screen cylinder 205 is aligned with the first support box 204 on both sides and fixed with bolts. Then, the first motor 204 is started to drive the first gear 305 to mesh with the gear ring 304, so that the screen cylinder 205 screens the coal. When it is necessary to feed the material, the first hydraulic rod 301 is started to move the second U-shaped plate, which in turn starts the hydraulic cylinder 302 to move the bottom plate 1 to a deflection position. The damper 303 is limited to convey the coal. When the surface of the screen cylinder 305 is blocked, the third hydraulic rod 308 is started to move the arc plate 309, so that the arc plate 309 is above the appropriate position. Then, the fourth hydraulic rod 310 is started to move the insertion rod 311, thereby screening the coal.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coal mine screening apparatus for use in coal mining, comprising a base plate (1), characterised in that: The top surface of the bottom plate (1) is provided with a screening mechanism (2) and a moving mechanism (3); The screening mechanism (2) comprises a support assembly and a filtering assembly, and the support assembly is located at the side of the filtering assembly; The support assembly comprises a first U-shaped plate (201), the bottom surface of the first U-shaped plate (201) is hingedly connected with the top surface of the bottom plate (1) through a hinge column, first through grooves are formed in the two side surfaces of the first U-shaped plate (201), a cylinder (202) is arranged on the left side of the first U-shaped plate (201), a first cavity is formed in the side surface of the cylinder (202), a first feeding pipe is formed in the top surface of the cylinder (202), a first motor (203) is fixedly arranged on the side surface of the first U-shaped plate (201), and first support boxes (204) are rotatably arranged on the two side surfaces of the first U-shaped plate (201) through bearings, respectively. The filtering assembly comprises a sieve cylinder (205), a plurality of first through holes are formed in the outer surface of the sieve cylinder (205), spring clamps (206) are fixedly arranged on the two side surfaces of the sieve cylinder (205), respectively, first clamping grooves are formed in the side surfaces of the two first support boxes (204), respectively, and the inner walls of the two first clamping grooves are clampedly connected with the outer surfaces of the two spring clamps (206), respectively.

2. The coal mine screening apparatus for coal mining according to claim 1, characterized in that: The moving mechanism (3) comprises a plurality of first hydraulic rods (301), the side surfaces of the first hydraulic rods (301) are fixedly connected with the side surfaces of the bottom plate (1), two first through grooves are formed in the top surface of the bottom plate (1), support rods (300) are fixedly arranged on the inner walls of the two first through grooves, respectively, a second U-shaped plate is further sleeved on the outer surfaces of the two support rods (300), two hydraulic cylinders (302) are hingedly arranged on the inner side surfaces of the second U-shaped plate through hinge columns, and the output rod end surfaces of the two hydraulic cylinders (302) are hingedly connected with the bottom surfaces of the first U-shaped plate (201), respectively.

3. The coal mine screening apparatus for coal mining according to claim 1, characterized in that: A plurality of dampers (303) are fixedly arranged on the top surface of the bottom plate (1), the top surfaces of the dampers (303) are fixedly connected with the bottom surface of the first U-shaped plate (201), respectively, the output rod of the first motor (203) penetrates through the side surface of the first U-shaped plate (201) and extends into the inner part of the first U-shaped plate (201), and the output rod end surface of the first motor (203) is rotatably connected with the inner side surface of the first U-shaped plate (201) through a bearing seat.

4. A coal mine screening apparatus for use in coal mining according to claim 3, characterized in that: The outer surfaces of the two first support boxes (204) are fixedly sleeved with gear rings (304), respectively, the output rod of the first motor (203) is fixedly sleeved with two first gear wheels (305), the output rod end surface of the first motor (203) is rotatably connected with the inner side surface of the first U-shaped plate (201) through a bearing seat, and the bottom surfaces of the two gear rings (304) are meshingly arranged with the side surfaces of the two first gear wheels (305), respectively.

5. A coal mine screening apparatus for use in coal mining according to claim 4, characterised in that: The cylinder (202) is fixedly provided with an L-shaped plate (306) on the side, a third limiting groove is formed through the top surface of the L-shaped plate (306), a second hydraulic rod (307) is fixedly arranged on the inner wall of the third limiting groove, and the output rod end surface of the second hydraulic rod (307) is fixedly provided with a third sliding block.

6. A coal mine screening apparatus for use in coal mining according to claim 5, characterised in that: The outer surface of the third sliding block is in sliding connection with the inner wall of the third limiting groove, a third hydraulic rod (308) is fixedly arranged on the bottom surface of the third sliding block, the output rod end surface of the third hydraulic rod (308) is fixedly provided with a cambered plate (309), and the inner bottom surface of the cambered plate (309) is fixedly provided with a plurality of fourth hydraulic rods (310), and the output rod lower end surface of each fourth hydraulic rod (310) is fixedly provided with a plug rod (311).

Images