Auxiliary chute from lump clean coal belt to fine coal belt

Abstract

The present invention discloses a secondary chute connecting a lump clean coal belt to a fine coal belt, comprising: a secondary chute body, a discharge hopper for drainage provided at the bottom of the secondary chute body, and a discharge pipe provided on one side of the secondary chute body; a first filter plate, obliquely arranged at the bottom of the secondary chute body, connected to the discharge pipe, and configured to filter moisture from the fine coal; and a drive device, arranged on one side of the secondary chute body, connected to the discharge hopper, and configured to promote airflow within the discharge hopper to assist the first filter plate in filtering. The present invention can effectively filter moisture from the fine coal, improving the recovery quality of the fine coal.

Description

Technical Field

[0001] The invention belongs to the technical field of auxiliary chutes, and in particular relates to an auxiliary chute from a lump clean coal belt to a fine coal belt. Background Art

[0002] Clean coal is divided into large clean coal, small clean coal and fine clean coal according to particle size. In the mining field, coal blocks are generally transported by transportation equipment and screened. The product after coal block screening is called fine clean coal. In the coal block conveying equipment, the clean coal block belt and the fine coal belt are generally connected by a secondary chute to facilitate the transportation of fine coal.

[0003] In the existing technology, due to the coal washing work, the clean coal contains a large amount of water, and the existing auxiliary chute cannot drain the fine coal. The clean coal directly enters the fine coal belt, which increases the moisture content of the fine coal, causing the moisture content of the fine coal to exceed the standard, affecting the sales of the fine coal. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art and to provide a secondary chute from the lump clean coal belt to the fine coal belt, which can effectively filter the moisture in the fine coal and improve the recovery quality of the fine coal.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide an auxiliary chute from the lump clean coal belt to the fine coal belt, including: an auxiliary chute body, a discharge hopper for drainage is provided at the bottom of the auxiliary chute body, and a discharge pipe is provided on one side of the auxiliary chute body; a first filter plate, the first filter plate is obliquely arranged at the lower part of the auxiliary chute body, the first filter plate is connected to the discharge pipe, and the first filter plate is used to filter the moisture in the fine coal; a driving device, the driving device is arranged on one side of the auxiliary chute body, the driving device is connected to the discharge hopper and the driving device is used to promote the flow of air in the discharge hopper to assist the first filter plate in filtering.

[0006] Furthermore, the secondary chute also includes: a backwashing device, which is arranged at the lower part of the first filter plate and is used to flush the first filter plate, and the driving device is connected to the backwashing device and is used to provide flushing water for the backwashing device.

[0007] Furthermore, the backwashing device includes: a reciprocating screw rod, the reciprocating screw rod is parallel to the first filter plate, and the two ends of the reciprocating screw rod are respectively rotatably connected to the opposite sides of the inner wall of the auxiliary chute body; a guide rod, the guide rod is parallel to the reciprocating screw rod, and the two ends of the guide rod are respectively fixedly connected to the opposite sides of the inner wall of the auxiliary chute body; a flushing seat, the two ends of the flushing seat are respectively sleeved on the reciprocating screw rod and the guide rod, the flushing seat is slidably connected to the guide rod, and the flushing seat is threadedly connected to the reciprocating screw rod, the flushing seat is a strip-shaped cavity structure, and a plurality of equidistantly distributed nozzles are provided on the side of the flushing seat close to the first filter plate; a first drive motor, the first drive motor is arranged on one side of the auxiliary chute body, the first drive motor is connected to the reciprocating screw rod and the first drive motor is used to drive the reciprocating screw rod to rotate.

[0008] Furthermore, the backwashing device also includes a flushing and filtering device, which is movably arranged on the discharge pipe, and is used to filter the sewage after the backwashing device flushes the first filter plate.

[0009] Furthermore, the flushing and filtering device includes: a filter seat, which is movably arranged to pass through the bottom of the discharge pipe, and a cavity is provided inside the filter seat, and a second filter plate is provided on the side of the filter seat close to the auxiliary chute body, and the second filter plate is connected to the cavity; an electric telescopic rod, the two ends of the electric telescopic rod are respectively connected to the discharge hopper and the filter seat, and the electric telescopic rod is used to push the filter seat to slide up and down in the discharge pipe; a return pipe, the two ends of the return pipe are respectively connected to the cavity of the filter seat and the discharge hopper.

[0010] Furthermore, the cross-sectional shape of the filter seat is consistent with the cross-sectional shape of the feed pipe.

[0011] Furthermore, the driving device includes: a volute, which is arranged on the outer wall of the auxiliary chute body, a rotating shaft is arranged at the center of the inside of the volute, and a plurality of blades are evenly arranged along the circumference of the rotating shaft, and a solenoid valve is provided at the outlet of the volute, and an exhaust pipe is connected to the solenoid valve; a second drive motor, which is connected to the rotating shaft and is used to drive the rotating shaft to rotate; a water injection pipe, which is arranged at the outlet near the volute, the water injection pipe is an inverted L-shape and is tilted downward, and the water injection pipe is connected to the flushing seat through a second hose; a connecting pipe, the two ends of the connecting pipe are respectively connected to the bottom of the volute and the discharge hopper, and the connecting pipe is used to transport gas and liquid to the volute.

[0012] Further, the connecting pipe includes: a connecting pipe body, wherein two ends of the connecting pipe body are respectively connected to the bottom of the volute and the discharge hopper, and a filter is provided at the connection between the connecting pipe body and the discharge hopper; a fixing seat, wherein the fixing seat is arranged inside the connecting pipe body, the fixing seat is connected to the inner wall of the connecting pipe body, and a truncated cone-shaped groove is provided at the bottom of the fixing seat; an electromagnet, wherein the electromagnet is arranged inside the connecting pipe body, the electromagnet is an annular structure, and a plurality of support blocks are provided on the outside of the electromagnet, and the plurality of support blocks are all connected to the inner wall of the connecting pipe body; a conduit, wherein the conduit is movably passed through the electromagnet, one end of the conduit is provided with a truncated cone-shaped protrusion that cooperates with the groove, and the other end of the conduit passes through the bottom of the connecting pipe body and is connected to the water source; a magnet, wherein the magnet is an annular structure, the magnet is sleeved on the outside of the conduit, the magnet is arranged between the protrusion and the electromagnet, and the magnet is connected to the protrusion.

[0013] Furthermore, a first circular hole is formed through the center of the fixing seat, and a second circular hole corresponding to the first circular hole is formed through the protruding head, and both the first circular hole and the second circular hole are connected to the conduit.

[0014] Furthermore, the discharge hopper is an inverted cone-shaped structure, the bottom of the discharge hopper is connected to a drain pipe, and a valve is provided on the drain pipe.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. The present invention arranges the first filter plate obliquely in the auxiliary chute body, thereby separating the fine coal from water during the fine coal transportation process, reducing the water content in the fine coal and ensuring the quality of the fine coal.

[0017] 2. The present invention provides a driving device to extract the gas inside the discharge hopper through the connecting pipe, so that the gas in the discharge hopper is extracted, thereby promoting the airflow in the auxiliary chute body. The external gas enters the discharge hopper through the first filter plate through the opening at the top of the auxiliary chute body. The airflow takes away the moisture of the fine coal on the first filter plate, further improving the water filtration effect.

[0018] 3. The present invention provides a backwashing device, which can flush the first filter plate through the flushing seat, thereby avoiding the problem of filter plate clogging caused by long-term use.

[0019] 4. The present invention provides a flushing and filtering device, which can filter the wastewater generated after the backwash device flushes the filter plate, thereby improving the recovery rate of fine coal.

[0020] The present invention is further described in detail below through the accompanying drawings and examples. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the external structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the external structure of the present invention from another perspective.

[0023] Figure 3 This is a schematic diagram of the external structure of the present invention from another perspective.

[0024] Figure 4 It is a partial cross-sectional view of the present invention.

[0025] Figure 5 for Figure 4 A partial enlarged view of area A in the middle.

[0026] Figure 6 This is a schematic diagram of the installation of the filter seat, the first filter plate, the discharge pipe and the auxiliary chute body of the present invention.

[0027] Figure 7 This is a positional relationship diagram of the backwashing device (excluding the flushing and filtering device) and the first filter plate of the present invention.

[0028] Figure 8 Schematic diagram of the structure of the driving device of the present invention.

[0029] Figure 9 Schematic diagram of the explosion of the connecting pipe of the present invention.

[0030] Description of the accompanying drawings:

[0031] 1—auxiliary chute body; 2—discharge hopper; 3—valve;

[0032] 4—Drain pipe; 5—Discharge pipe; 6—Sealing cover;

[0033] 7—short tube; 8—electric telescopic rod; 9—return pipe;

[0034] 10—Filter seat; 11—Voltage casing; 12—Solenoid valve;

[0035] 13—exhaust pipe; 14—second drive motor; 15—water injection pipe;

[0036] 16—fixed plate; 17—first drive motor; 18—connecting pipe;

[0037] 19—conduit; 20—first hose; 21—first filter plate;

[0038] 22—Flushing seat; 23—Second hose; 24—Threaded sleeve;

[0039] 25—reciprocating screw; 26—transmission rod; 27—second filter plate;

[0040] 28—rotating shaft; 29—blade; 30—electromagnet;

[0041] 31—magnet; 32—support block; 33—convex head;

[0042] 34—fixing seat; 35—groove; 36—connecting pipe body;

[0043] 37—long tube body; 38—guide rod. DETAILED DESCRIPTION

[0044] Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0045] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0046] like Figure 1-9As shown, a secondary chute for transferring clean coal from a lump clean coal belt to a fine coal belt comprises: a secondary chute body 1, a first filter plate 21, and a drive device. Specifically, the secondary chute body 1 comprises a long tube 37 and a short tube 7. The long tube 37 communicates with the short tube 7, which is disposed on one side of the bottom of the long tube 37. The top of the long tube 37 is open, through which the fine coal enters the secondary chute body 1. A sealing cover 6 is provided at the top of the short tube 7. This sealing cover 6 facilitates observation of coal falling onto the first filter plate 21 within the secondary chute body 1 and facilitates cleaning and maintenance in the event of an internal fault. The discharge pipe 5 communicates with the short tube 7. A discharge hopper 2 for drainage is located at the bottom of the auxiliary chute body 1, and a discharge pipe 5 is located on one side of the auxiliary chute body 1. A first filter plate 21 is tilted and positioned at the bottom of the auxiliary chute body 1. The first filter plate 21 is connected to the discharge pipe 5 and is used to filter moisture from the fine coal. The fine coal is swept off the lump clean coal belt by a cleaner and falls into the auxiliary chute body 1. The tilted first filter plate 21 separates the fine coal from the water, which flows through the first filter plate 21 into the discharge hopper 2, while the fine coal remains on the first filter plate 21. Because the first filter plate 21 is tilted and its lower end is connected to the discharge pipe 5, the fine coal flows smoothly into the discharge pipe 5 for discharge, reducing the moisture content of the discharged fine coal and ensuring its quality. A drive device is located on one side of the auxiliary chute body 1 and is connected to the discharge hopper 2. The drive device is used to promote airflow within the discharge hopper 2 to assist the first filter plate 21 in filtering.

[0047] In this embodiment, the secondary chute also includes a backwashing device, which is arranged at the lower part of the first filter plate 21 and is used to flush the first filter plate 21. The driving device is connected to the backwashing device and is used to provide flushing water for the backwashing device.

[0048] Specifically, the backwashing device includes: a reciprocating screw rod 25, a guide rod 38, a flushing seat 22 and a first drive motor 17. The reciprocating screw rod 25 is parallel to the first filter plate 21, and the two ends of the reciprocating screw rod 25 are rotatably connected to the opposite sides of the inner wall of the auxiliary chute body 1; the guide rod 38 is parallel to the reciprocating screw rod 25, and the two ends of the guide rod 38 are fixedly connected to the opposite sides of the inner wall of the auxiliary chute body 1, and the guide rod 38 and the reciprocating screw rod 25 are respectively located at the two ends of the bottom of the first filter plate 21; the two ends of the flushing seat 2 are respectively sleeved on the reciprocating screw rod 25 and the guide rod 38, so that the flushing seat 2 is parallel to the first filter plate 21, the flushing seat 22 is slidably connected to the guide rod 38, and the flushing seat 22 is threadedly connected to the reciprocating screw rod 25. Specifically, the backwashing device includes: a reciprocating screw rod 25, a guide rod 38, a flushing seat 22, and a first drive motor 17. A through hole is provided at one end of the wash seat 22 connected to the reciprocating screw rod 25, and a threaded sleeve 24 is fixedly arranged in the through hole, and the threaded sleeve 24 is sleeved on the reciprocating screw rod 25; the first drive motor 17 is arranged on one side of the auxiliary chute body 1, specifically, a fixed plate 16 is provided on the outer wall of one side of the auxiliary chute body 1, and the first drive motor 17 is arranged on the fixed plate 16; the first drive motor 17 is connected to the reciprocating screw rod 25 and the first drive motor 17 is used to drive the reciprocating screw rod 25 to rotate, and a transmission rod 26 is fixedly arranged on the output shaft of the first drive motor 17, and the transmission rod 26 passes through the side wall of the auxiliary chute body 1 and is fixedly connected to the reciprocating screw rod 25.

[0049] In this embodiment, the flushing seat 22 is a strip-shaped hollow structure. A plurality of equally spaced nozzles are provided on the side of the flushing seat 22 close to the first filter plate 21, i.e., on the top surface of the flushing seat 22, so as to evenly flush the first filter plate 21. When the first drive motor 17 is turned on, the first drive motor 17 drives the reciprocating screw 25 to rotate, causing the flushing seat 22 to reciprocate beneath the first filter plate 21, and the nozzles spray water, achieving a back-and-forth reverse flushing of the first filter plate 21.

[0050] In this embodiment, the backwashing device also includes a flushing and filtering device, which is movably arranged on the discharge pipe 5 and is used to filter the sewage after the backwashing device flushes the first filter plate 21 to improve the recovery rate of the fine coal.

[0051] Specifically, the flushing and filtering device includes: a filter seat 10, an electric telescopic rod 8, and a return pipe 9. The filter seat 10 is movably arranged to pass through the bottom of the discharge pipe 5 and has a cavity inside. A second filter plate 27 is provided on the side of the filter seat 10 close to the auxiliary chute body 1, and the second filter plate 27 is connected to the cavity. The two ends of the electric telescopic rod 8 are respectively connected to the discharge hopper 2 and the filter seat 10. The output end of the electric telescopic rod 8 is connected to the filter seat 10, and the electric telescopic rod 8 is used to push the filter seat 10 to slide up and down within the discharge pipe 5. The two ends of the return pipe 9 are respectively connected to the cavity of the filter seat 10 and the discharge hopper 2.

[0052] In this embodiment, the cross-sectional shape of the filter seat 10 is consistent with that of the feed pipe 5. A strip-shaped slot is formed at the bottom of the feed pipe 5, and the filter seat 10 passes through the strip-shaped slot. When the feed pipe 5 is in the coal-dropping state, the top of the filter seat 10 is located in the strip-shaped slot, and the top of the filter seat 10 can be used to seal the feed pipe 5. When it is necessary to filter the sewage after flushing the first filter plate 21, the filter seat 10 is located in the lumen of the feed pipe 5. At this time, because the cross-sectional shape of the filter seat 10 is consistent with that of the feed pipe 5, the filter seat 10 can play a good sealing role and prevent sewage from flowing out of the feed pipe 5.

[0053] Turn on the switch of the electric telescopic rod 8, which drives the filter seat 10 to rise. The sewage generated by the backwash device is filtered through the second filter plate 27, and the large particles of fine coal are blocked outside the filter seat 10. The sewage flows back to the discharge hopper 2 through the return pipe 9, and is finally discharged through the valve 3 and the drain pipe 4. After the cleaning work is completed, the filter seat 10 is reset, and the fine coal filtered by the second filter plate 27 is discharged through the discharge pipe 5 to avoid coal loss.

[0054] In this embodiment, the driving device includes: a volute 11, a second driving motor 14, a water injection pipe 15 and a connecting pipe 18, the volute 11 is arranged on the outer wall of the auxiliary chute body 1, and a rotating shaft 28 is provided at the center of the volute 11, and a plurality of blades 29 are evenly arranged along the circumference of the rotating shaft 28, and a solenoid valve 12 is provided at the outlet of the volute 11, and the solenoid valve 12 is connected to the exhaust pipe 13; the second driving motor 14 is connected to the rotating shaft 28 and the second driving motor 14 is used to drive the rotating shaft 28 to rotate; the water injection pipe 15 is arranged at the outlet near the volute 11, the water injection pipe 15 is an inverted L-shape and is tilted downward, and the water injection pipe 15 is connected to the flushing seat 22 through a second hose 23; the two ends of the connecting pipe 18 are respectively connected to the bottom of the volute 11 and the discharge hopper 2, and the connecting pipe 18 is used to transport gas and liquid to the volute 11.

[0055] In this embodiment, the connecting pipe 18 includes: a connecting pipe body 36, a fixing seat 34, an electromagnet 30, a conduit 19 and a magnet 31. The two ends of the connecting pipe body 36 are respectively connected to the bottom of the volute 11 and the discharge hopper 2. A filter is provided at the connection between the connecting pipe body 36 and the discharge hopper 2. The filter is provided to prevent debris from entering the connecting pipe body 36 and clogging the entire drive device during air extraction. The fixing seat 34 is provided inside the connecting pipe body 36, and the fixing seat 34 is connected to the inner wall of the connecting pipe body 36. A truncated cone-shaped groove 35 is provided at the bottom of the fixing seat 34. The electromagnet 30 is provided inside the connecting pipe body 36. The electromagnet 30 is an annular structure. Three support blocks 32 are provided on the outside of the electromagnet 30. The three support blocks 32 are all connected to the inner wall of the connecting pipe body 36. The three support blocks 32 are evenly distributed along the circumference of the electromagnet 30. Distribution; the conduit 19 is movably arranged to pass through the annular center of the electromagnet 30, and one end of the conduit 19 is provided with a truncated cone-shaped protrusion 33 that cooperates with the groove 35. The other end of the conduit 19 passes through the bottom of the connecting pipe body 36 and is connected to the water source through the first hose 20; the magnet 31 is an annular structure, and the magnet 31 is sleeved on the outside of the conduit 19. The magnet 31 is arranged between the protrusion 33 and the electromagnet 30, and the magnet 31 is connected to the protrusion 33.

[0056] When filtering the water of the fine coal, the second drive motor 14 is turned on to drive the rotating shaft 28 to rotate. The rotating shaft 28 drives multiple blades 29 to rotate. The rotation of multiple blades 29 pushes the fluid in the volute 11 to move, so that the fluid has a larger centripetal force. When the fluid moves to the outlet of the volute 11, under the action of centrifugal force, the fluid is discharged from the exhaust pipe 13 on the volute 11. Since the water injection pipe 15 is a downward-inclined inverted L-shape, a large amount of gas is prevented from entering the water injection pipe 15. When the blades 29 rotate, the gas inside the volute 11 is continuously transported to the external environment. Therefore, the air pressure inside the volute 11 is reduced, forming a low-pressure environment, thereby extracting the gas in the discharge hopper 2 through the connecting pipe body 36. The gas in the discharge hopper 2 enters from the auxiliary chute body 1 and enters the discharge hopper 2 after passing through the first filter plate 21. The exhaust of the driving device promotes the rapid flow of air, takes away the water droplets on the surface of the fine coal, and enhances the water filtering effect.

[0057] When flushing the first filter plate 21, after the electromagnet 30 is energized, the electromagnet 30 and the magnet 30 repel each other. Since the position of the electromagnet 30 in the connecting pipe 18 is fixed, the magnet 30 moves toward the side of the protrusion 33, pushing the protrusion 33 and the groove 35 to cooperate with each other. After the water source is connected, the water flows from the first hose 20 to the conduit 19, the solenoid valve 12 on the outlet of the volute 11 is closed, and after the second drive motor 14 is turned on, the shaft 28 rotates to drive the blade 29 to rotate. The water is driven by the blade 29 to flow to the water injection pipe 15 and enters the flushing seat 22 through the second hose 23.

[0058] In this embodiment, a first circular hole is opened through the center of the fixing seat 34, and a second circular hole corresponding to the first circular hole is opened through the protrusion 33. The first circular hole and the second circular hole are both connected to the conduit 19 so that water can enter the volute 11 and be pumped into the flushing seat 22 through the second conduit 23.

[0059] In this embodiment, the discharge hopper 2 is an inverted cone structure. The bottom of the discharge hopper 2 is connected to a drain pipe 4. A valve 3 is provided on the drain pipe 4. The valve 3 is opened during filtering and flushing operations to allow sewage to flow out.

[0060] The working principle of the present invention is:

[0061] When the fine coal falls into the auxiliary chute body 1, the water in the fine coal is filtered through the inclined first filter plate 21, so that the fine coal and water are separated, and the water content in the fine coal is reduced. The water passes through the first filter plate 21 and enters the discharge hopper 2, and the fine coal enters the discharge pipe 5; during the filtering process, the second drive motor 14 is turned on, and the second drive motor 14 drives the rotating shaft 28 to rotate, and the rotating shaft 28 drives the multiple blades 29 to rotate. When the blades 29 rotate, they push the fluid inside the volute 11 to move, so that the fluid has a larger centripetal force. When the fluid moves to the volute 11, the centripetal force is increased. When the outlet of the volute 11 is reached, the solenoid valve 12 is in the open state. Under the action of centrifugal force, the fluid is discharged from the exhaust pipe 13 on the volute 11. When the blades 29 rotate, the gas inside the volute 11 is continuously transported to the external environment. The air pressure inside the volute 11 is reduced, and the connecting pipe 18 draws the gas in the discharge hopper 2 into the volute 11, promoting the flow of air in the discharge hopper 2. The air enters from the opening at the top of the auxiliary chute body 1, passes through the first filter plate 21, and enters the discharge hopper, thereby further taking away the moisture in the fine coal on the first filter plate 21, thereby enhancing the water filtration effect.

[0062] When it is necessary to flush the first filter plate 21, the electromagnet 30 is energized. Under the action of magnetic force, the electromagnet 30 repels the magnet 31, and the magnet 31 moves toward the side of the protrusion 33, driving the protrusion 33 to cooperate with the groove 35 in the fixing seat 34, connecting the water source, so that water can flow from the first hose 20 to the conduit 19 and enter the volute 11. At this time, the solenoid valve 12 is in the closed state. After turning on the second drive motor 14, the rotating shaft 28 drives the multiple blades 29 to rotate, pumping water into the water injection pipe 15, and the water then enters the flushing seat 22 through the second hose 23 to flush the first filter plate 21. Turn on the first drive motor 17 to drive the reciprocating screw 25 to rotate, so that the flushing seat 22 moves back and forth under the first filter plate 21 to realize the reverse flushing of the first filter plate 21; further turn on the switch of the electric telescopic rod 8, and the electric telescopic rod 8 drives the filter seat 10 to rise, and the sewage generated by flushing the first filter plate 21 is filtered by the second filter plate 27. Large particles of fine coal are blocked outside the filter seat 10, and the sewage flows back to the discharge hopper 2 through the return pipe 9, and is discharged through the valve 3 and the drain pipe 4. When the flushing is completed and the first filter plate 21 is returned to its position, the fine coal can be smoothly discharged and recovered through the discharge pipe 5.

[0063] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural transformation made to the above embodiment based on the technical essence of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A secondary chute from a lump clean coal belt to a fine coal belt, characterized in that: include: A secondary chute body (1), wherein a discharge hopper (2) for drainage is provided at the bottom of the secondary chute body (1), and a discharge pipe (5) is provided on one side of the secondary chute body (1); a first filter plate (21), the first filter plate (21) being obliquely arranged at the lower portion of the auxiliary chute body (1), the first filter plate (21) being connected to the discharge pipe (5), and the first filter plate (21) being used to filter moisture in the fine coal; A driving device, the driving device being arranged on one side of the auxiliary chute body (1), the driving device being in communication with the discharge hopper (2) and being used to promote airflow in the discharge hopper (2) to assist the first filter plate (21) in filtering; The auxiliary chute further comprises: a backwashing device, the backwashing device being arranged at the lower portion of the first filter plate (21), and the backwashing device being used for flushing the first filter plate (21), the driving device being connected to the backwashing device and the driving device being used for providing flushing water for the backwashing device; The backwashing device comprises: a flushing seat (22); The driving device comprises: A volute (11), the volute (11) being arranged on the outer wall of the auxiliary chute body (1), a rotating shaft (28) being arranged at the center of the interior of the volute (11), a plurality of blades (29) being evenly arranged along the circumference of the rotating shaft (28), a solenoid valve (12) being arranged at the outlet of the volute (11), and an exhaust pipe (13) being connected to the solenoid valve (12); a second drive motor (14), the second drive motor (14) being connected to the rotating shaft (28) and being used to drive the rotating shaft (28) to rotate; a water injection pipe (15), the water injection pipe (15) being arranged near the outlet of the volute (11), the water injection pipe (15) being in an inverted L-shape and being arranged to be tilted downward, the water injection pipe (15) being in communication with the flushing seat (22) via a second hose (23); a connecting pipe (18), the two ends of which are respectively connected to the bottom of the volute (11) and the discharge hopper (2), and the connecting pipe (18) is used to transport gas and liquid to the volute (11); The connecting pipe (18) comprises: a connecting pipe body (36), wherein both ends of the connecting pipe body (36) are respectively connected to the bottom of the volute (11) and the discharge hopper (2), and a filter is provided at the connection between the connecting pipe body (36) and the discharge hopper (2); A fixing seat (34), the fixing seat (34) being arranged inside the connecting pipe body (36), the fixing seat (34) being connected to the inner wall of the connecting pipe body (36), and a truncated cone-shaped groove (35) being provided at the bottom of the fixing seat (34); An electromagnet (30), the electromagnet (30) being arranged inside the connecting pipe body (36), the electromagnet (30) being an annular structure, a plurality of support blocks (32) being arranged outside the electromagnet (30), the plurality of support blocks (32) being connected to the inner wall of the connecting pipe body (36); a conduit (19), the conduit (19) being movably arranged to pass through the electromagnet (30), one end of the conduit (19) being provided with a truncated cone-shaped protrusion (33) cooperating with the groove (35), and the other end of the conduit (19) passing through the bottom of the connecting pipe body (36) and connected to a water source; A magnet (31), the magnet (31) is an annular structure, the magnet (31) is sleeved on the outside of the conduit (19), the magnet (31) is arranged between the convex head (33) and the electromagnet (30), and the magnet (31) is connected to the convex head (33); A first circular hole is formed through the center of the fixing seat (34), and a second circular hole corresponding to the first circular hole is formed through the protruding head (33), and both the first circular hole and the second circular hole are in communication with the conduit (19).

2. The auxiliary chute from the lump clean coal belt to the fine coal belt according to claim 1, characterized in that: The backwash device also includes: a reciprocating screw rod (25), the reciprocating screw rod (25) being parallel to the first filter plate (21), and the two ends of the reciprocating screw rod (25) being rotatably connected to opposite sides of the inner wall of the auxiliary chute body (1); A guide rod (38), the guide rod (38) is parallel to the reciprocating screw rod (25), and both ends of the guide rod (38) are fixedly connected to opposite sides of the inner wall of the auxiliary chute body (1); The two ends of the flushing seat (22) are respectively sleeved on the reciprocating screw (25) and the guide rod (38), the flushing seat (22) is slidably connected to the guide rod (38), and the flushing seat (22) is connected to the reciprocating screw (25) through a thread. The flushing seat (22) is a strip-shaped cavity structure, and a plurality of nozzles distributed at equal distances are provided on one side of the flushing seat (22) close to the first filter plate (21); A first drive motor (17) is provided on one side of the auxiliary chute body (1), the first drive motor (17) is connected to the reciprocating screw (25), and the first drive motor (17) is used to drive the reciprocating screw (25) to rotate.

3. The auxiliary chute from the lump clean coal belt to the fine coal belt according to claim 2, characterized in that: The backwashing device further comprises a flushing and filtering device, which is movably arranged on the discharge pipe (5) and is used to filter the sewage after the backwashing device flushes the first filter plate (21).

4. The auxiliary chute from the lump clean coal belt to the fine coal belt according to claim 3, characterized in that: The flushing and filtering device comprises: A filter seat (10), the filter seat (10) is movably arranged to pass through the bottom of the discharge pipe (5), and a cavity is provided inside the filter seat (10), and a second filter plate (27) is provided on a side of the filter seat (10) close to the auxiliary chute body (1), and the second filter plate (27) is communicated with the cavity; An electric telescopic rod (8), wherein both ends of the electric telescopic rod (8) are respectively connected to the discharge hopper (2) and the filter seat (10), and the electric telescopic rod (8) is used to push the filter seat (10) to slide up and down in the discharge pipe (5); A return pipe (9), wherein both ends of the return pipe (9) are respectively connected to the cavity of the filter seat (10) and the discharge hopper (2).

5. The auxiliary chute from the lump clean coal belt to the fine coal belt according to claim 4, characterized in that: The cross-sectional shape of the filter seat (10) is consistent with the cross-sectional shape of the feed pipe (5).

6. The auxiliary chute from the lump clean coal belt to the fine coal belt according to claim 1, characterized in that: The discharge hopper (2) is an inverted cone-shaped structure. The bottom of the discharge hopper (2) is connected to a drainage pipe (4), and a valve (3) is provided on the drainage pipe (4).

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