Coal mine screening equipment for coal mining

Abstract

The utility model relates to the technical field of coal mine screening equipment, in particular to coal mine screening equipment for coal mining, which comprises a box body, the left side and the right side of the box body are respectively provided with a discharge chute, one side of each discharge chute is fixedly connected with a hinge, one side of each hinge is fixedly connected with a filter plate, one side of each filter plate is fixedly connected with a connecting piece, and the connecting pieces are fixedly connected with the filter plates. And one end of the connecting sheet is fixedly connected with a rotating shaft. The coal mine vibration screening device has the advantages that the vibrators and the filter plates can screen coal mines on the top of the vibrators, the upper filter plate and the lower filter plate can screen the coal mines in a multi-stage mode, the screened coal mines enter the drawer, and after vibration screening is completed, the electric push rod is started and pushes the pull plate upwards, so that the coal mines are screened out. The filter plates on the two sides of the pull plate are lifted upwards at the same time through the connecting pieces, the inclined filter plates can pour out coal mine on the top of the inclined filter plates from the discharging groove, the filter plates in the horizontal state can better screen the coal mine on the top of the inclined filter plates, and the filter plates in the inclined state can discharge the coal mine on the top of the inclined filter plates outwards.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine screening equipment, in particular to a coal mine screening equipment for coal mine exploitation. Background Technique

[0002] A coal mine is an area where humans mine coal resources in coal-rich mining areas. Generally, it is divided into underground coal mines and surface coal mines. Most coal mines in China belong to underground coal mines. The scope of a coal mine includes a large area above and below the ground and related facilities. A coal mine is a reasonable space excavated by humans when digging a geological layer rich in coal. With the development of science and technology, people have higher and higher requirements for the mined coal, and it is necessary to classify the size of the coal during screening.

[0003] A coal mine screening equipment for coal mine exploitation disclosed in Chinese Patent CN213222450U can classify the coal in the box body by setting a first screen and a second screen. Both screens are placed obliquely, and the vibration device cooperates with the screens to screen the coal. Although this screening method can achieve the purpose of screening coal, the falling coal stays on the inclined screen for a short time, so the screening efficiency of the screen is low. Content of the Utility Model

[0004] The purpose of the utility model aims to solve at least one of the technical defects.

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background technique, and provide a coal mine screening equipment for coal mine exploitation.

[0006] The purpose of the utility model is achieved by the following technical solutions: a coal mine screening equipment for coal mine exploitation, including a box body. Discharge grooves are opened on both the left and right sides of the box body. One side of the discharge groove is fixedly connected with a hinge, and one side of the hinge is fixedly connected with a filter plate. One side of the filter plate is fixedly connected with a connecting piece, and one end of the connecting piece is fixedly connected with a rotating shaft. One side of the rotating shaft is fixedly connected with a pulling plate. Grooves are opened on both the left and right sides of the pulling plate near the bottom. Vertical plates are fixedly connected to both the left and right sides of the top of the pulling plate. Electric push rods are arranged at the bottoms of both the left and right ends of the pulling plate. Support plates are fixedly connected to both the left and right sides of the box body, and the support plates are fixedly connected with the electric push rods.

[0007] One side of the top of the discharge groove is fixedly connected with a fixed block, and one side of the bottom of the discharge groove is fixedly connected with a discharge plate. A linear module is fixedly connected inside the fixed block, and the output end of the linear module is fixedly connected with a connecting block, and one end of the connecting block is fixedly connected with a baffle.

[0008] Preferably, the number of the discharge chutes is four. Two of the discharge chutes form a group, and the two groups of discharge chutes are linearly arrayed on the upper and lower sides of the box body. The number of the filter plates is two, and the two filter plates are respectively located on the left and right sides of the pulling plate. Torsion springs are arranged at both the left and right ends of the rotating shaft.

[0009] By adopting the above technical solution, the upper and lower groups of filter plates can perform multi-stage screening on the coal mine.

[0010] Preferably, adjustment grooves are respectively formed at the left and right ends of the box body close to the pulling plate. The size of the vertical plate is larger than that of the adjustment groove. The output end of the electric push rod is welded to the pulling plate, and the bottom end of the electric push rod is welded to the supporting plate.

[0011] By adopting the above technical solution, the vertical plate can block the adjustment groove to prevent the coal mine inside the box body from discharging outwards through the adjustment groove. The electric push rod can adjust the height of the pulling plate in the box body, thereby changing the inclination angle of the filter plate.

[0012] Preferably, the discharge plate is an inclined plate. The length of the discharge plate on one side of the top discharge chute is greater than that of the discharge plate on one side of the bottom discharge chute. The inclination angle of the discharge plate is 45 degrees.

[0013] By adopting the above technical solution, the discharge plate at a higher position has a longer length, and the discharge plate at a lower position has a shorter length, so that the discharge positions of the two discharge plates can be staggered.

[0014] Preferably, the material of the connecting piece is nylon cloth. Limit plates are welded to the bottom side of the inner wall of the box body close to the filter plate. The number of the limit plates is four, and the four limit plates are respectively located at the four corners of the inner wall of the box body.

[0015] By adopting the above technical solution, the limit plates can keep the filter plate in a horizontal state.

[0016] Preferably, a feed pipe is fixedly connected to the top of the box body, and a collection tank is formed at the bottom of the box body. A drawer is inserted into the collection tank.

[0017] By adopting the above technical solution, the drawer in the collection tank can collect the screened coal mine.

[0018] Compared with the prior art, the present utility model has the following advantages:

[0019] 1. The coal screening equipment used in the coal mine mining, by setting a pull plate, one side of the rotating shaft is fixedly connected with the pull plate, grooves are opened on both the left and right sides of the pull plate near the bottom, two rotating shafts are respectively rotatably connected in the two grooves on both sides of the bottom of the pull plate, the pull plate is connected with the filter plate through a connecting piece, when the vibrator cooperates with the filter plate, the coal on its top can be screened, the upper and lower groups of filter plates can screen the coal in multiple levels, after the screening is completed, the coal enters the inside of the drawer, after the vibration screening is completed, the electric push rod is started, the electric push rod pushes the pull plate upward, the pull plate simultaneously lifts the filter plates on both sides through the connecting piece, the inclined filter plate can pour the coal on its top outwards from the discharge chute, the horizontal filter plate can screen the coal on its top well, and the inclined filter plate can discharge the coal on its top outwards;

[0020] 2. The coal screening equipment used in the coal mine mining, by setting a baffle plate, a discharge plate is fixedly connected to one side of the bottom of the discharge chute, a linear module is fixedly connected inside the fixed block, the output end of the linear module is fixedly connected with a connecting block, one end of the connecting block is fixedly connected with a baffle plate, when the filter plate is in a horizontal state for coal screening, the baffle plate blocks the discharge chute, when the filter plate dumps the coal on its top, the linear module is started, and the linear module can pull the baffle plate upwards, and the coal on the top of the filter plate can be discharged outwards from the discharge chute, achieving the purpose of convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the present utility model;

[0022] Figure 2 is a schematic structural diagram of the pull plate of the present utility model;

[0023] Figure 3 is a schematic structural diagram of the baffle plate of the present utility model.

[0024] In the figure: 1 - box body, 2 - discharge chute, 3 - hinge, 4 - filter plate, 5 - connecting piece, 6 - rotating shaft, 7 - pull plate, 8 - groove, 9 - vertical plate, 10 - electric push rod, 11 - support plate, 12 - fixed block, 13 - discharge plate, 14 - linear module, 15 - connecting block, 16 - baffle plate, 17 - feed pipe, 18 - collection tank, 19 - drawer, 20 - vibrator. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The additional aspects and advantages of the present utility model will be further given in the following description in conjunction with the drawings, and some will become obvious from the following description, or will be understood through the practice of the present utility model.

[0026] Such as Figure 1-2As shown in the figure, a coal mine screening device for coal mine exploitation includes a box body 1. Discharge grooves 2 are provided on both the left and right sides of the box body 1. A hinge 3 is installed on one side of the discharge groove 2. A filter plate 4 is installed on one side of the hinge 3. A connecting piece 5 is embedded and connected to one side of the filter plate 4. One end of the connecting piece 5 is provided with a rotating shaft 6. One side of the rotating shaft 6 is connected to a pull plate 7 through a bearing. Grooves 8 are provided on both the left and right sides of the pull plate 7 near the bottom. Vertical plates 9 are welded to both the left and right sides of the top of the pull plate 7. Electric push rods 10 are welded to the bottom of both the left and right ends of the pull plate 7. Support plates 11 are welded to both the left and right sides of the box body 1. The support plates 11 are welded to the electric push rods 10.

[0027] With the above settings, when the vibrator 20 cooperates with the filter plate 4, the coal mine on its top can be screened. The upper and lower groups of filter plates 4 can perform multi-level screening on the coal mine. After the screening is completed, the coal mine enters the interior of the drawer 19. After the vibration screening is completed, the electric push rod 10 is started. The electric push rod 10 pushes the pull plate 7 upward. The pull plate 7 simultaneously lifts the filter plates 4 on both sides thereof through the connecting piece 5. The inclined filter plate 4 can pour the coal mine on its top out through the discharge groove 2. The horizontal filter plate 4 can perform better screening on the coal mine on its top. The inclined filter plate 4 can discharge the coal mine on its top;

[0028] As shown in Figure 1 and Figure 3 the figure, a fixed block 12 is welded to one side of the top of the discharge groove 2. A discharge plate 13 is welded to one side of the bottom of the discharge groove 2. A linear module 14 is embedded and installed inside the fixed block 12. A connecting block 15 is welded to the output end of the linear module 14. A baffle 16 is welded to one end of the connecting block 15;

[0029] With the above settings, when the filter plate 4 is in a horizontal state for coal mine screening, the baffle 16 blocks the discharge groove 2. When the filter plate 4 dumps the coal mine on its top, the linear module 14 is started. The linear module 14 can pull up the baffle 16. The coal mine on the top of the filter plate 4 can be discharged out through the discharge groove 2, achieving the purpose of convenient use;

[0030] As a preferred technical solution of the present invention, the number of discharge grooves 2 is four. Two discharge grooves 2 form a group. Two groups of discharge grooves 2 are linearly arranged on the upper and lower sides of the box body 1. The number of filter plates 4 is two. The two filter plates 4 are respectively located on the left and right sides of the pull plate 7. Coil springs are provided at both the left and right ends of the rotating shaft 6.

[0031] As a preferred technical solution of the present invention, adjustment grooves are provided at both the left and right ends of the box body 1 close to the pull plate 7. The size of the vertical plate 9 is larger than the size of the adjustment groove. The output end of the electric push rod 10 is welded to the pull plate 7. The bottom end of the electric push rod 10 is welded to the support plate 11.

[0032] As a preferred technical solution of the present utility model, the discharge plate 13 is an inclined plate. The length of the discharge plate 13 on one side of the top discharge chute 2 is greater than the length of the discharge plate 13 on one side of the bottom discharge chute 2, and the inclination angle of the discharge plate 13 is forty-five degrees.

[0033] As a preferred technical solution of the present utility model, the connecting piece 5 is made of nylon cloth. A limiting plate is welded to the inner wall of the box body 1 near the bottom of the filter plate 4. The number of limiting plates is four, and the four limiting plates are respectively located at the four corners of the inner wall of the box body 1.

[0034] As a preferred technical solution of the present utility model, a feed pipe 17 is fixedly connected to the top of the box body 1, and a collection tank 18 is opened at the bottom of the box body 1. A drawer 19 is inserted into the collection tank 18.

[0035] The working process of the present utility model is as follows:

[0036] S1. The vibrator 20 and the filter plate 4 can screen the coal mine on its top. The upper and lower groups of filter plates 4 can perform multi-stage screening on the coal mine. After screening, the coal mine enters the interior of the drawer 19.

[0037] S2. After the vibration screening is completed, the electric push rod 10 is started. The electric push rod 10 pushes the pull plate 7 upward. The pull plate 7 simultaneously lifts the filter plates 4 on both sides through the connecting piece 5. The inclined filter plates 4 can pour the coal mine on their top out of the discharge chute 2.

[0038] S3. When the coal mine is screened with the filter plate 4 in a horizontal state, the baffle 16 blocks the discharge chute 2. When the filter plate 4 dumps the coal mine on its top, the linear module 14 is started. The linear module 14 can pull the baffle 16 upward, and the coal mine on the top of the filter plate 4 can be discharged out of the discharge chute 2.

[0039] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A coal screening device for coal mining, characterized in that: The invention comprises a box body (1), wherein a discharge trough (2) is provided on both left and right sides of the box body (1), a hinge (3) is fixedly connected to one side of the discharge trough (2), a filter plate (4) is fixedly connected to one side of the hinge (3), a connecting piece (5) is fixedly connected to one side of the filter plate (4), one end of the connecting piece (5) is fixedly connected to a rotating shaft (6), one side of the rotating shaft (6) is fixedly connected to a pull plate (7), grooves (8) are provided on both left and right sides of the pull plate (7) near the bottom, vertical plates (9) are fixedly connected to both left and right sides of the top of the pull plate (7), electric push rods (10) are provided at the bottom of both left and right ends of the pull plate (7), and supporting plates (11) are fixedly connected to both left and right sides of the box body (1), and the supporting plates (11) are fixedly connected to the electric push rods (10); A fixed block (12) is fixedly connected to one side of the top of the discharge trough (2), a discharge plate (13) is fixedly connected to one side of the bottom of the discharge trough (2), a linear module (14) is fixedly connected inside the fixed block (12), a connecting block (15) is fixedly connected to the output end of the linear module (14), and a baffle (16) is fixedly connected to one end of the connecting block (15).

2. A coal screening device for coal mining according to claim 1, characterized in that: The number of the discharge troughs (2) is four, two of the discharge troughs (2) form a group, and the two groups of the discharge troughs (2) are linearly arrayed on the upper and lower sides of the box body (1). The number of the filter plates (4) is two, and the two filter plates (4) are respectively located on the left and right sides of the pull plate (7), and the left and right ends of the rotating shaft (6) are both provided with coil springs.

3. The coal screening equipment used in coal mining according to claim 1, characterized in that: The box body (1) is provided with adjustment slots at both left and right ends close to the pull plate (7); the size of the vertical plate (9) is larger than the size of the adjustment slots; the output end of the electric push rod (10) is welded to the pull plate (7); and the bottom end of the electric push rod (10) is welded to the support plate (11).

4. The coal screening equipment used in coal mining according to claim 1, characterized in that: The discharge plate (13) is an inclined plate, the length of the discharge plate (13) on one side of the top discharge trough (2) is greater than the length of the discharge plate (13) on one side of the bottom discharge trough (2), and the inclination angle of the discharge plate (13) is forty-five degrees.

5. The coal screening equipment used in coal mining according to claim 1, characterized in that: The connecting piece (5) is made of nylon cloth. A limiting plate is welded to one side of the inner wall of the box body (1) close to the bottom of the filter plate (4). There are four limiting plates, which are respectively located at the four corners of the inner wall of the box body (1).

6. The coal screening equipment used in coal mining according to claim 1, characterized in that: A feed pipe (17) is fixedly connected to the top of the box body (1), a collecting trough (18) is provided at the bottom of the box body (1), a drawer (19) is inserted into the interior of the collecting trough (18), and a vibrator (20) is provided at the bottom of the filter plate (4).

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