Sundry cleaning device and method for coal gangue selecting machine

Abstract

The invention discloses an impurity cleaning device and method for a coal gangue selecting machine, and belongs to the field of gangue selecting machine cleaning. An impurity cleaning device of a coal gangue selecting machine comprises a lower fixing frame and an upper fixing frame fixedly connected with the lower fixing frame, and further comprises a screen frame arranged on the upper fixing frame in a sliding mode, and screen holes are formed in the screen frame. The sliding rod is connected to the screen frame in a sliding mode, a hollow rod is arranged on the sliding rod, a connecting block is fixedly connected to the hollow rod, a brush is arranged on the connecting block, a nozzle is further arranged on the connecting block, and when the sliding rod moves, the brush and the nozzle clean the screen holes; the discharging plate is fixedly arranged on the lower fixing frame, and the discharging plate is arranged below the screen frame; the storage box is arranged on the lower fixing frame in a sliding manner; dust and other impurities on the screen holes can be effectively cleaned, the screen holes are prevented from being blocked, the screening efficiency of the screen frame is improved, faults are reduced, and the service life of the device is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of gangue separator cleaning, and in particular to a debris cleaning device and a cleaning method for a coal gangue separator. Background Art

[0002] Coal gangue separator is a kind of equipment used in coal mining industry, mainly used to separate the mixed gangue (useless waste rock) and other debris from coal; large pieces of gangue and debris will not only reduce the calorific value of coal, but also may contain harmful components. Screening out these materials can improve the overall quality of coal and improve combustion efficiency; coal gangue separator separates coal from gangue or debris by screening, vibration and other methods, so as to facilitate subsequent processing and utilization.

[0003] During the screening process, particles of the material will continue to accumulate on the surface of the screen, and some coal or debris may be sticky. At the same time, the screen of the screening machine may accumulate a large amount of dust, which will cause the screen aperture to be gradually blocked after long-term use, thereby comprehensively affecting the efficiency of the screen filtration, increasing the risk of equipment failure, and affecting the service life of the equipment. In view of this, the present invention is specially proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a coal gangue cleaning device and a cleaning method.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A debris cleaning device for a coal gangue separator comprises a lower fixing frame and an upper fixing frame fixedly connected to the lower fixing frame, and further comprises: A screen frame slidably arranged on the upper fixed frame, wherein the screen frame is provided with screen holes; A sliding rod is slidably connected to the screen frame, the sliding rod is provided with a hollow rod, the hollow rod is fixedly connected with a connecting block, the connecting block is provided with a brush, and the connecting block is also provided with a nozzle. When the sliding rod moves, the brush and the nozzle clean the screen holes; A blanking plate is fixedly arranged on the lower fixing frame, and the blanking plate is placed below the screen frame; The storage box is slidably arranged on the lower fixing frame.

[0006] Preferably, a fixing plate is fixedly connected to the upper fixing frame, a support rod is fixedly connected to the bottom of the screen frame, the support rod is slidably connected to the fixing plate, a support block is provided at the bottom of the support rod, and the support block is slidably arranged on the upper fixing frame.

[0007] Further, a first spring is provided between the bottom of the sieve frame and the fixed plate, and a second spring is provided between the bottom of the fixed plate and the support block. Both the first spring and the second spring are sleeved on the outer wall of the support rod. An arc-shaped plate is fixedly connected to the outer wall of the bottom of the sieve frame, and the arc-shaped plate is slidably connected to the outer wall of the fixed plate.

[0008] Furthermore, a first mounting plate is fixedly connected to the outer wall of the upper fixing frame, a first motor is fixedly connected to the first mounting plate, a cam is provided at the output end of the first motor, a fixing block is fixedly connected to the outer wall of the sieve frame, an arc-shaped block is provided at the bottom of the fixing block, and the cam cooperates with the arc-shaped block.

[0009] Preferably, an air cylinder is fixedly connected to the outer wall of the sieve frame, an air outlet pipe is provided on the air cylinder, one end of the air outlet pipe away from the air cylinder is connected to the sliding rod, and the air outlet pipe is communicated with the hollow rod. A round hole is provided on the brush, the nozzle is placed in the round hole, and the nozzle is communicated with the hollow rod.

[0010] Further, a limiting plate is fixedly connected to the outer wall of the sieve frame, a chute is provided on the limiting plate, a slider is fixedly connected to the outer wall of the top of the sliding rod, a vertical plate is fixedly connected to the top of the slider, a push rod is fixedly connected to the vertical plate, and a piston is fixedly connected to one end of the push rod away from the vertical plate. The piston is slidably connected in the air cylinder.

[0011] Furthermore, a second mounting plate is fixedly connected to the outer wall of the sieve frame, a second motor is fixedly connected to the second mounting plate, a half gear is connected to the output end of the second motor, a cross plate is fixedly connected to the vertical plate, and teeth meshing with the half gear are provided on the cross plate.

[0012] Furthermore, a baffle is fixedly connected to the outer wall of the sieve frame, a third spring is provided between the baffle and the outer wall of the vertical plate, a fourth spring is sleeved on the outer wall of the push rod, and the fourth spring is arranged between the vertical plate and the outer wall of the air cylinder.

[0013] Preferably, there are multiple rows of sieve holes on the sieve frame, there are multiple hollow rods, the multiple hollow rods are arranged in a staggered manner with the multiple rows of sieve holes, a triangular block is arranged inside the sieve frame, and a side plate matching with the blanking plate is provided on the lower fixing frame.

[0014] A method for cleaning sundries of a coal gangue separator adopts the following steps: S1. Place the material to be screened in the sieve frame; S2. Control the sieve frame to shake, so as to perform the screening operation; S3. After the screening is completed, the sieve frame stops shaking, and control the sliding rod to move; S4. The sliding rod drives the brush to move to clean the sieve holes. S5. Meanwhile, the nozzle can eject gas to further clean the sieve holes and improve the cleaning effect.

[0015] Compared with the prior art, the present invention provides a device and a method for cleaning sundries in a coal refuse separator, which have the following beneficial effects: 1. In the device for cleaning sundries in the coal refuse separator, when the semi-gear rotates, it drives the vertical plate to move. First, it drives the sliding rod to move, and at the same time, the brush moves. When the brush moves below the sieve hole, the brush will extend into the sieve hole to clean the sieve hole, and the brush can clean the sieve hole in a cyclic manner, which can improve the cleaning effect.

[0016] 2. In the device for cleaning sundries in the coal refuse separator, when the semi-gear rotates and drives the vertical plate to move, it also drives the push rod to move, thereby driving the piston to move in the air cylinder, and then pushing the gas in the air cylinder into the outlet pipe, entering the hollow rod through the sliding rod, and then ejecting through the nozzle to further clean the dust in the sieve hole and improve the cleaning effect.

[0017] 3. In the device for cleaning sundries in the coal refuse separator, after the material is placed in the sieve frame, the first motor is started to drive the cam to rotate. When the vertex of the cam contacts the bottom of the arc block, it drives the arc block to move upward, thereby driving the sieve frame to move upward through the fixed block. When the cam continues to move until the vertex of the cam no longer contacts the bottom of the arc block, the sieve frame will move downward to reset, thereby realizing the jitter of the sieve frame, sifting the material located in the sieve frame, enabling the smaller pieces of coal to fall through the sieve holes, and then entering the storage box through the blanking plate to achieve collection.

[0018] The parts not involved in this device are the same as or can be implemented by the prior art. In the present invention, it can effectively clean the dust and other impurities on the sieve holes, avoid the blockage of the sieve holes, improve the screening efficiency of the sieve frame, reduce the occurrence of faults, and improve the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of a device for cleaning sundries in a coal refuse separator proposed by the present invention Figure 1 ; Figure 2 is a schematic structural diagram of a device for cleaning sundries in a coal refuse separator proposed by the present invention Figure 2 ; Figure 3 is a schematic structural diagram of the bottom of the sieve frame in a device for cleaning sundries in a coal refuse separator proposed by the present invention; Figure 4 is a schematic structural diagram of the sieve frame in a device for cleaning sundries in a coal refuse separator proposed by the present invention; Figure 5 Schematic diagram of the structure of the air cylinder and the brush in a sundry cleaning device for a coal gangue separator according to the present invention; Figure 6 Cross-sectional view of the hollow rod and the connecting block in a sundry cleaning device for a coal gangue separator according to the present invention; Figure 7 A sundry cleaning device for a coal gangue separator according to the present invention Figure 1 Enlarged view of part A in; Figure 8 A sundry cleaning device for a coal gangue separator according to the present invention Figure 5 Enlarged view of part B in; Figure 9 A sundry cleaning device for a coal gangue separator according to the present invention Figure 6 Enlarged view of part C in.

[0020] In the figure: 1, lower fixing frame; 101, upper fixing frame; 102, fixing plate; 103, blanking plate; 104, side plate; 105, storage box; 2, sieve frame; 201, sieve holes; 202, fixing block; 203, arc block; 204, first mounting plate; 205, cam; 206, arc plate; 207, triangular block; 3, support rod; 301, support block; 302, first spring; 303, second spring; 4, second mounting plate; 401, second motor; 402, half gear; 403, limiting plate; 404, chute; 405, vertical plate; 406, horizontal plate; 407, tooth; 408, baffle; 409, third spring; 5, air cylinder; 501, piston; 502, push rod; 503, fourth spring; 504, air outlet pipe; 6, sliding rod; 601, slider; 602, hollow rod; 603, connecting block; 604, brush; 605, round hole; 606, nozzle. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0022] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. Embodiment

[0023] Refer to Figures 1 - 9, A device for cleaning sundries of a coal gangue separator, comprising a lower fixed frame 1 and an upper fixed frame 101 fixedly connected to the lower fixed frame 1. It further includes a sieve frame 2 slidably arranged on the upper fixed frame 101, and the sieve frame 2 is provided with sieve holes 201; and a sliding rod 6 slidably connected to the sieve frame 2. The sliding rod 6 is provided with a hollow rod 602, and a connecting block 603 is fixedly connected to the hollow rod 602. A brush 604 is provided on the connecting block 603, and a nozzle 606 is also provided on the connecting block 603. When the sliding rod 6 moves, the brush 604 and the nozzle 606 clean the sieve holes 201; a blanking plate 103 is fixedly arranged on the lower fixed frame 1, and the blanking plate 103 is located below the sieve frame 2, and a storage box 105 is slidably connected to the lower fixed frame 1.

[0024] In this embodiment, during use, the materials to be screened are directly placed in the sieve frame 2, and the sieve frame 2 is controlled to vibrate, so as to perform the screening operation, leaving larger sundries or gangue etc. in the sieve frame 2, and enabling the coal to fall through the sieve holes 201 onto the blanking plate 103, and then enter the storage box 105 for storage. It should be noted that the blanking plate 103 is inclined, and the coal can fall after falling onto the blanking plate 103, so as to better fall into the storage box 105; when the screening is completed and the sieve holes 201 on the sieve frame 2 need to be cleaned, the sliding rod 6 is controlled to move, so as to drive the hollow rod 602 and the connecting block 603 to move, thereby moving the brush 604. In the initial state, the brush 604 is misaligned with the sieve holes 201 and will not affect the falling of the coal. After the brush 604 moves, the sieve holes 201 can be cleaned. And while the sliding rod 6 moves, the nozzle 606 can spray gas to clean the sieve holes 201, blowing away the dust etc. remaining in the sieve holes 201. Moreover, the sieve holes 201 are set as inverted conical holes, and when the brush 604 is cleaning, the contact area between the brush 604 and the sieve holes 201 can be increased, the cleaning effect can be better, blockage can be avoided, and the efficiency can be improved. Embodiment

[0025] Refer to Figures 1 - 9 , A device for cleaning sundries of a coal gangue separator, comprising a lower fixed frame 1 and an upper fixed frame 101 fixedly connected to the lower fixed frame 1. It further includes a sieve frame 2 slidably arranged on the upper fixed frame 101, and the sieve frame 2 is provided with sieve holes 201; and a sliding rod 6 slidably connected to the sieve frame 2. The sliding rod 6 is provided with a hollow rod 602, and a connecting block 603 is fixedly connected to the hollow rod 602. A brush 604 is provided on the connecting block 603, and a nozzle 606 is also provided on the connecting block 603. When the sliding rod 6 moves, the brush 604 and the nozzle 606 clean the sieve holes 201; a blanking plate 103 is fixedly arranged on the lower fixed frame 1, and the blanking plate 103 is located below the sieve frame 2, and a storage box 105 is slidably connected to the lower fixed frame 1.

[0026] Refer toFigures 1 - 4 , a fixing plate 102 is fixedly connected to the upper fixing frame 101. A support rod 3 is fixedly connected to the bottom of the sieve frame 2. The support rod 3 is slidably connected to the fixing plate 102. A support block 301 is provided at the bottom of the support rod 3. The support block 301 is slidably arranged on the upper fixing frame 101.

[0027] Refer to Figures 1 - 4 , a first spring 302 is provided between the bottom of the sieve frame 2 and the fixing plate 102. A second spring 303 is provided between the bottom of the fixing plate 102 and the support block 301. Both the first spring 302 and the second spring 303 are sleeved on the outer wall of the support rod 3. An arc plate 206 is fixedly connected to the outer wall of the bottom of the sieve frame 2. The arc plate 206 is slidably connected to the outer wall of the fixing plate 102.

[0028] Refer to Figures 1 - 4 and Figure 7 , a first mounting plate 204 is fixedly connected to the outer wall of the upper fixing frame 101. A first motor is fixedly connected to the first mounting plate 204. A cam 205 is provided at the output end of the first motor. A fixing block 202 is fixedly connected to the outer wall of the sieve frame 2. An arc block 203 is provided at the bottom of the fixing block 202. The cam 205 is matched with the arc block 203.

[0029] In this embodiment, after the material is placed in the sieve frame 2, the first motor connected to the first mounting plate 204 is started. The first motor will drive the cam 205 connected to its output end to rotate. When the cam 205 rotates, it will come into contact with the arc block 203. When the vertex on the cam 205 comes into contact with the bottommost part of the arc block 203, it will drive the arc block 203 to move upward, thereby driving the sieve frame 2 to move upward through the fixing block 202. When the cam 205 continues to move until the vertex of the cam 205 is no longer in contact with the bottom of the arc block 203, the sieve frame 2 will move downward to reset, thereby realizing the jitter of the sieve frame 2, and screening the material located in the sieve frame 2, so that the smaller pieces of coal fall from the sieve holes 201, and then enter the storage box 105 through the feeding plate 103 to achieve collection.

[0030] Moreover, when the sieve frame 2 jitters, it will drive the support rod 3 to slide on the fixing plate 102, which can make the movement of the sieve frame 2 more stable. The provided first spring 302 and second spring 303 can make the sieve frame 2 automatically reset after moving, and at the same time improve the jitter effect of the sieve frame 2, facilitate filtration and screening, and improve efficiency. Embodiment

[0031] Refer to Figures 1 - 9, a sundry cleaning device for a coal gangue separator, comprising a lower fixing frame 1 and an upper fixing frame 101 fixedly connected to the lower fixing frame 1. It further includes a sieve frame 2 slidably arranged on the upper fixing frame 101, with sieve holes 201 provided on the sieve frame 2; and a sliding rod 6 slidably connected to the sieve frame 2. A hollow rod 602 is provided on the sliding rod 6, and a connecting block 603 is fixedly connected to the hollow rod 602. A brush 604 is provided on the connecting block 603, and a nozzle 606 is also provided on the connecting block 603. When the sliding rod 6 moves, the brush 604 and the nozzle 606 clean the sieve holes 201. A blanking plate 103 is fixedly arranged on the lower fixing frame 1, and the blanking plate 103 is located below the sieve frame 2. A storage box 105 is slidably connected to the lower fixing frame 1.

[0032] Referring to Figures 1 - 6 and Figures 8 - 9 , a cylinder 5 is fixedly connected to the outer wall of the sieve frame 2. An air outlet pipe 504 is provided on the cylinder 5. One end of the air outlet pipe 504 away from the cylinder 5 is connected to the sliding rod 6, and the air outlet pipe 504 is communicated with the hollow rod 602. A round hole 605 is provided on the brush 604, and the nozzle 606 is placed in the round hole 605 and is communicated with the hollow rod 602.

[0033] Referring to Figures 1 - 6 and Figures 8 - 9 , a limiting plate 403 is fixedly connected to the outer wall of the sieve frame 2. A chute 404 is provided on the limiting plate 403. A slider 601 is fixedly connected to the top outer wall of the sliding rod 6. A vertical plate 405 is fixedly connected to the top of the slider 601. A push rod 502 is fixedly connected to the vertical plate 405. One end of the push rod 502 away from the vertical plate 405 is fixedly connected to a piston 501, and the piston 501 is slidably connected in the cylinder 5.

[0034] Referring to Figure 8 , a second mounting plate 4 is fixedly connected to the outer wall of the sieve frame 2. A second motor 401 is fixedly connected to the second mounting plate 4. The output end of the second motor 401 is connected to a semi-gear 402. A cross plate 406 is fixedly connected to the vertical plate 405, and teeth 407 meshing with the semi-gear 402 are provided on the cross plate 406.

[0035] Referring to Figure 8 , a baffle 408 is fixedly connected to the outer wall of the sieve frame 2. A third spring 409 is provided between the outer wall of the baffle 408 and the outer wall of the vertical plate 405. A fourth spring 503 is sleeved on the outer wall of the push rod 502, and the fourth spring 503 is arranged between the vertical plate 405 and the outer wall of the cylinder 5.

[0036] In this embodiment, when the screen frame 2 needs to be cleaned, the second motor 401 fixedly connected to the second mounting plate 4 is started to drive the half gear 402 to rotate. It should be noted that half of the outer wall of the half gear 402 is provided with teeth, while the other half of the outer wall is not provided with teeth. Therefore, the half gear 402 will not always be meshed with the gear teeth 407 on the horizontal plate 406. When the half gear 402 is meshed with the gear teeth 407, it will drive the horizontal plate 406 to move, thereby driving the vertical plate 405 to move.

[0037] When the vertical plate 405 moves, it will first drive the slider 601 to move in the slide groove 404, thereby driving the sliding rod 6 to move. When the sliding rod 6 moves, it can drive the connecting block 603 connected to the sliding rod 6 to move, and at the same time, the brush 604 moves. In the initial state, the brush 604 has a certain compression effect and tightly presses against the bottom outer wall of the sieve frame 2. When the brush 604 moves to the bottom of the sieve hole 201, the brush 604 will extend into the sieve hole 201 to clean the sieve hole 201, and when the half gear 402 is no longer engaged with the gear teeth 407 on the cross plate 406, it will automatically reset under the action of the third spring 409 and the fourth spring 503, so that the brush 604 automatically resets, and then the half gear 402 is engaged with the gear teeth 407 again, so that the brush 604 cyclically cleans the sieve hole 201, thereby improving the cleaning effect.

[0038] When the vertical plate 405 moves, it will not only drive the slider 601 to move in the slide groove 404, but also drive the push rod 502 to move, thereby driving the piston 501 to move in the air cylinder 5, and then push the gas in the air cylinder 5, so that the gas inside the air cylinder 5 is discharged through the air outlet pipe 504, and then enters the hollow rod 602 through the sliding rod 6, and is sprayed out through the nozzle 606, so as to further clean the dust and the like in the sieve hole 201, thereby improving the cleaning effect, and when the half gear 402 and the gear tooth 407 are no longer engaged, the vertical plate 405 will automatically reset under the action of the third spring 409 and the fourth spring 503, so that the piston 501 is reset. Specifically, an air inlet hole is provided on the outer wall of the air cylinder 5, and air can be introduced into the air cylinder 5 through the air inlet hole, and a one-way valve is provided on the air inlet hole and the air outlet pipe 504, so that the air inlet hole can only realize the air intake operation and will not discharge air, so that the air outlet pipe 504 can realize the air discharge operation and will not intake air, so that the air cylinder 5 can work better.

[0039] Reference Figures 1 - 5, there are multiple rows of screening holes 201 on the screening frame 2, and there are multiple hollow rods 602. The multiple hollow rods 602 are arranged out of alignment with the multiple rows of screening holes 201. At this time, the multiple hollow rods 602 and the brush 604 will not affect the normal falling of coal. During cleaning, the brush 604 moves to perform the cleaning work, improving the use effect. There is a triangular block 207 inside the screening frame 2, which can make the materials inside the screening frame 2 move towards the middle of the screening frame 2 more conveniently, facilitating the feeding. There is a side plate 104 on the lower fixing frame 1 that cooperates with the feeding plate 103, which can block the falling materials to a certain extent, making them enter the storage box 105 better and preventing them from scattering onto the ground. Embodiment

[0040] A method for cleaning sundries of a coal gangue separator is operated by the following steps: First, place the materials to be screened in the screening frame 2, control the screening frame 2 to vibrate, and thus perform the screening operation, so that larger sundries or gangue and the like remain in the screening frame 2, and the coal falls through the screening holes 201 onto the feeding plate 103 and then enters the storage box 105 for storage; When the screening is completed and the screening holes 201 on the screening frame 2 need to be cleaned, control the sliding rod 6 to move, so that it drives the hollow rod 602 and the connecting block 603 to move, and thus the brush 604 moves. After the brush 604 moves, the screening holes 201 can be cleaned; And while the sliding rod 6 moves, the nozzle 606 can spray gas to clean the screening holes 201, blowing away the dust and the like remaining in the screening holes 201. The screening holes 201 are set as inverted conical holes. When the brush 604 is cleaning, the contact area between the brush 604 and the screening holes 201 can be increased, the cleaning effect can be better, blockage can be avoided, and the efficiency can be improved.

[0041] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present invention.

Claims

1. A debris cleaning device for a coal gangue separator, comprising a lower fixing frame (1) and an upper fixing frame (101) fixedly connected to the lower fixing frame (1), characterized in that: Also includes: A screen frame (2) slidably mounted on the upper fixed frame (101), wherein the screen frame (2) is provided with screen holes (201); A sliding rod (6) is slidably connected to the screen frame (2), the sliding rod (6) is provided with a hollow rod (602), the hollow rod (602) is fixedly connected with a connecting block (603), the connecting block (603) is provided with a brush (604), and the connecting block (603) is also provided with a nozzle (606), when the sliding rod (6) moves, the brush (604) and the nozzle (606) clean the screen hole (201); A blanking plate (103) is fixedly mounted on the lower fixing frame (1), and the blanking plate (103) is placed below the screen frame (2); The storage box (105) is slidably arranged on the lower fixing frame (1).

2. A debris cleaning device for coal gangue separation machine according to claim 1, characterized in that: A fixing plate (102) is fixedly connected to the upper fixing frame (101), a support rod (3) is fixedly connected to the bottom of the screen frame (2), the support rod (3) is slidably connected to the fixing plate (102), a support block (301) is provided at the bottom of the support rod (3), and the support block (301) is slidably arranged on the upper fixing frame (101).

3. A debris cleaning device for coal gangue separation machine according to claim 2, characterized in that: A first spring (302) is provided between the bottom of the screen frame (2) and the fixed plate (102), and a second spring (303) is provided between the bottom of the fixed plate (102) and the support block (301). The first spring (302) and the second spring (303) are both sleeved on the outer wall of the support rod (3). The outer wall of the bottom of the screen frame (2) is fixedly connected to an arc plate (206), and the arc plate (206) is slidably connected to the outer wall of the fixed plate (102).

4. A debris cleaning device for coal gangue separation machine according to claim 3, characterized in that: A first mounting plate (204) is fixedly connected to the outer wall of the upper fixing frame (101), a first motor is fixedly connected to the first mounting plate (204), an output end of the first motor is provided with a cam (205), a fixing block (202) is fixedly connected to the outer wall of the screen frame (2), a circular arc block (203) is provided at the bottom of the fixing block (202), and the cam (205) cooperates with the circular arc block (203).

5. The debris cleaning device for coal gangue separation machine according to claim 1, characterized in that: An air cylinder (5) is fixedly connected to the outer wall of the screen frame (2), an air outlet pipe (504) is provided on the air cylinder (5), one end of the air outlet pipe (504) away from the air cylinder (5) is connected to the sliding rod (6), and the air outlet pipe (504) is connected to the hollow rod (602), a circular hole (605) is provided on the brush (604), the nozzle (606) is placed in the circular hole (605), and the nozzle (606) is connected to the hollow rod (602).

6. A debris cleaning device for coal gangue separation machine according to claim 5, characterized in that: The outer wall of the screen frame (2) is fixedly connected to a limit plate (403), and a slide groove (404) is provided on the limit plate (403). The top outer wall of the sliding rod (6) is fixedly connected to a sliding block (601), and the top of the sliding block (601) is fixedly connected to a vertical plate (405). The vertical plate (405) is fixedly connected to a push rod (502), and one end of the push rod (502) away from the vertical plate (405) is fixedly connected to a piston (501), and the piston (501) is slidably connected in the air cylinder (5).

7. A debris cleaning device for coal gangue separation machine according to claim 6, characterized in that: A second mounting plate (4) is fixedly connected to the outer wall of the screen frame (2), a second motor (401) is fixedly connected to the second mounting plate (4), a half gear (402) is connected to the output end of the second motor (401), a horizontal plate (406) is fixedly connected to the vertical plate (405), and a gear tooth (407) meshing with the half gear (402) is provided on the horizontal plate (406).

8. A debris cleaning device for coal gangue separation machine according to claim 7, characterized in that: A baffle (408) is fixedly connected to the outer wall of the screen frame (2); a third spring (409) is provided between the baffle (408) and the outer wall of the vertical plate (405); a fourth spring (503) is sleeved on the outer wall of the push rod (502); and the fourth spring (503) is provided between the vertical plate (405) and the outer wall of the air cylinder (5).

9. A debris cleaning device for coal gangue separation machine according to claim 1, characterized in that: The sieve holes (201) on the sieve frame (2) are provided with a plurality of rows, the hollow rods (602) are provided with a plurality of holes, the plurality of hollow rods (602) are arranged in a staggered manner with the plurality of rows of sieve holes (201), a triangular block (207) is provided inside the sieve frame (2), and a side plate (104) matching with the blanking plate (103) is provided on the lower fixed frame (1).

10. A method for cleaning debris from a coal gangue separator, comprising a device for cleaning debris from a coal gangue separator according to any one of claims 1 to 9, characterized in that: Use the following steps: S1. Place the material to be screened in the screen frame (2); S2, controlling the screen frame (2) to vibrate, thereby performing a screening operation; S3, when the screening is completed, the screen frame (2) stops shaking and controls the sliding rod (6) to move; S4, the sliding rod (6) drives the brush (604) to move to clean the sieve holes (201); S5. At the same time, the nozzle (606) can spray gas to further clean the sieve holes (201) and improve the cleaning effect.

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