A control device for raw coal transportation and dust collection to avoid ash collapse

Abstract

The present invention belongs to the field of raw coal transportation, and in particular to a control device for raw coal transportation and dust collection to avoid ash collapse. In view of the problem that when the existing device is transporting raw coal, a small amount of powdered raw coal is blown into the air during the transportation process, which is easy to affect the air quality and the health of workers, and the powdered raw coal cannot be collected in time, thereby causing a waste of resources, the following scheme is proposed, which includes a bottom plate, and the top of the bottom plate is fixedly connected with four L-shaped fixed plates that are symmetrical in pairs, and the same screening box is fixedly connected between the four L-shaped fixed plates, and feed ports are opened on both sides of the top of the screening box. In the present invention, after being screened by the sieve holes, large pieces of raw coal slide down along the inclined surface of the triangular plate. As the raw coal enters, the weight of the collection box gradually increases. When the first rectangular plate is completely moved to the bottom of the second rectangular plate, since the top of the screening box is inclined, the collection box slides to one side of the L-shaped baffle.

Description

Technical Field

[0001] The invention relates to the technical field of raw coal transportation, and in particular to a control device for raw coal transportation, dust collection and ash collapse prevention. Background Art

[0002] Raw coal refers to the raw coal mined from the ground or underground, which is screened and processed to remove gangue, pyrite, etc. When collecting raw coal, a conveyor belt is usually used to transport the raw coal. However, the existing conveying device still has the following defects when used:

[0003] 1. When transporting raw coal, a small amount of powdered raw coal is blown into the air during transportation, which can easily affect the air quality and the health of workers;

[0004] 2. The powdered raw coal cannot be collected in time, resulting in a waste of resources. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings in the prior art that when conveying raw coal, a small amount of powdered raw coal is blown into the air during the conveying process, which easily affects the air quality and the health of workers, and the powdered raw coal cannot be collected in time, thereby causing a waste of resources. A control device for conveying raw coal and collecting dust to avoid ash collapse is proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A control device for conveying raw coal and collecting dust to avoid ash collapse, comprising a bottom plate, four L-shaped fixed plates symmetrically connected to the top of the bottom plate, a screening box fixedly connected between the four L-shaped fixed plates, and feed ports are provided on both sides of the top of the screening box;

[0008] A screening component, which is arranged inside the screening box and is used to screen the raw coal;

[0009] A first discharge port is provided in the middle of one side of the screening box;

[0010] A first discharging assembly, which is arranged on one side of the screening box near the first discharging port and is used to collect powdered raw coal;

[0011] A second discharge port is provided at the bottom of the screening box on one side away from the first discharge port;

[0012] A second discharging assembly, which is arranged at the bottom of the screening box and is used to collect lump raw coal;

[0013] A plurality of collection boxes, each of which is arranged on the top of the bottom plate;

[0014] A brake assembly, which is disposed on the top of the bottom plate and is used to brake the position of the collection box;

[0015] A feed assembly, which is arranged on the top of both sides of the screening box and is used for raw coal to enter;

[0016] A No. 2 triangular groove is provided on the top inner wall of the screening box;

[0017] An anti-ash collapse component is arranged inside the No. 2 triangular groove and is used to prevent ash collapse.

[0018] In one possible design, the screening assembly includes an L-shaped plate fixedly connected to the inner wall of one side of the screening box, the L-shaped plate is located on one side of the first discharge port, a No. 1 triangular groove is provided on the top of the L-shaped plate, an inclined block is fixedly connected to the top of the L-shaped plate, a plurality of sieve holes are provided inside the inclined block, a fixed triangular block is fixedly connected to the inner wall of the screening box on the side away from the L-shaped plate, and a triangular plate is fixedly connected to the bottom inner wall of the screening box.

[0019] In a possible design, the first discharge assembly includes a V-shaped box fixedly connected to one side of the screening box, a through hole connected to the first discharge port is provided inside the V-shaped box, a cover plate is slidably connected to the bottom of one side of the V-shaped box, a fourth inclined groove used in conjunction with the through hole is provided on one side of the cover plate, convex plates are fixedly connected to both sides of the bottom of the cover plate, the convex plates are used in conjunction with the collecting box, and two symmetrically arranged first springs are fixedly connected between the top of the cover plate and the bottom of the screening box.

[0020] In a possible design, the second discharging assembly includes a U-shaped frame fixedly connected to the bottom of the screening box, two symmetrically arranged rotating rollers are rotatably connected between the inner walls on both sides of the U-shaped frame, the outer walls of the rotating rollers are provided with pulleys, and the outer wall transmission sleeves of the two pulleys are provided with the same conveyor belt, and two symmetrically arranged rectangular baffles are fixedly connected to the top of the U-shaped frame, and a servo motor is fixedly connected to one side of the U-shaped frame, and the output shaft of the servo motor rotates through the U-shaped frame and is fixedly connected to one end of one of the rotating rollers.

[0021] In a possible design, the brake assembly includes a rectangular groove opened on the top of the base plate, a push plate slidingly penetrates the inner wall of the rectangular groove, four compression springs symmetrically connected in pairs are fixedly connected between the bottom of the push plate and the bottom inner wall of the rectangular groove, an L-shaped baffle is fixedly connected to one side of the top of the base plate, wherein one side of the two L-shaped fixed plates are fixedly connected to two symmetrically arranged second rectangular plates, and one side of the collection box is fixedly connected to two symmetrically arranged first rectangular plates, and the first rectangular plates are used in conjunction with the second rectangular plates.

[0022] In a possible design, the feed assembly includes a feed box fixedly connected to one side of the screening box, a third chute is provided on the top of the feed box, and the third chute is used in conjunction with the feed port, and two symmetrically arranged first chute are provided on the top of the screening box, and the first chute is used in conjunction with the feed box.

[0023] In a possible design, the anti-ash collapse component includes two rectangular frames symmetrically arranged on the inner wall of the No. 2 triangular groove and slidably connected, a rectangular hole is opened inside the rectangular frame, a plurality of mounting plates are fixedly connected to the inner wall of one side of the rectangular hole, a plurality of bristles are arranged on the top of the mounting plate, and the same second spring is fixedly connected between the two rectangular frames.

[0024] In a possible design, two symmetrically arranged rotating plates are rotatably connected between the inner walls on both sides of the screening box, the rotating plates cooperate with the feed opening, and the rotating plates are used in conjunction with the rectangular frame.

[0025] In a possible design, a second inclined groove is formed on the bottom inner wall of the U-shaped frame.

[0026] In a possible design, a vertical plate is fixedly connected to the bottom of the screening box, a first receiving cavity and a second receiving cavity are provided inside the collecting box, and the vertical plate is located between the first receiving cavity and the second receiving cavity.

[0027] In the present application, when in use, the raw coal is discharged through the feed box and fed into the feed port along the inclined surface of the third chute. At this time, the rotating plate is opened, and the raw coal can be fed into the screening box. The raw coal on both sides falls on the top of the inclined block. After being screened by the sieve holes, the large pieces of raw coal slide down along the inclined surface of the triangular plate and are finally discharged through the second discharge port.

[0028] The servo motor is started, and the output shaft of the servo motor drives the rotating roller to rotate, and the rotating roller drives the conveyor belt to rotate through the pulley, and the conveyor belt drives the raw coal above to be transported out. At the same time, the rectangular baffle can prevent the raw coal from spilling out, and the second chute can help some of the raw coal adhering to the conveyor belt to flow back and enter the second receiving chamber for collection;

[0029] Smaller powdered raw coal can slide down through the No. 1 triangular groove, be discharged into the inside of the through hole through the first discharge port, gradually slide down along the through hole, enter the inside of the first receiving chamber to complete collection, and the setting of the first chute can help the bounced raw coal slide into the inside of the device and will not remain on the top of the screening box;

[0030] As the raw coal enters, the weight of the collection box gradually increases. At this time, the collection box squeezes the push plate to move vertically downward. The push plate squeezes the compression spring and enters the interior of the rectangular groove. The collection box drives the two first rectangular plates to move vertically downward. When the first rectangular plate is completely moved to the bottom of the second rectangular plate, at this time, since the top of the screening box is tilted, the collection box slides to one side of the L-shaped baffle, and the push plate cannot bounce up. At this time, the next collection box moves to the top of the push plate;

[0031] When the empty collection box is completely moved above the push plate, the push plate drives the collection box to move vertically upward under the elastic force of the compression spring, and the collection box drives the two convex plates to move vertically upward, and the convex plates drive the cover plate to move vertically upward, and the cover plate squeezes the first spring and gradually opens the through hole to facilitate the discharge of materials;

[0032] In order to avoid ash collapse, a No. 2 triangular groove is provided on the top inner wall of the screening box. Whenever the rotating plate is opened, the rotating plate pushes the rectangular frame to move laterally, and the two rectangular frames approach each other and squeeze the second spring. At this time, the rectangular frame drives the mounting plate to move laterally, and the mounting plate drives the bristles to move laterally. The bristles sweep the ash on the No. 2 triangular groove, which is easy to use.

[0033] Beneficial effects:

[0034] In the present invention, the control device for conveying raw coal and collecting dust to avoid ash collapse can achieve the effect of screening raw coal of different sizes through the screening component, and then can separate and collect raw coal lumps and powdered raw coal, reduce waste, and prevent the leakage of powdered raw coal;

[0035] In the present invention, the control device for preventing ash collapse during raw coal transportation and dust collection can achieve the effect of preventing ash collapse inside the device through the anti-ash collapse component;

[0036] In the present invention, the raw coal is discharged through the feed box and sent into the inside of the feed port along the inclined surface of the third chute. After being screened by the sieve holes, large pieces of raw coal slide down along the inclined surface of the triangular plate. As the raw coal enters, the weight of the collection box gradually increases. When the first rectangular plate is completely moved to the bottom of the second rectangular plate, the top of the screening box is inclined, and the collection box slides to one side of the L-shaped baffle. Whenever the rotating plate is opened, the bristles will sweep away the dust on the No. 2 triangular slot, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A three-dimensional structural schematic diagram of a control device for raw coal conveying and dust collection to avoid ash collapse proposed by the present invention;

[0038] Figure 2 A schematic diagram of the three-dimensional structure of a control device for conveying and collecting dust to avoid ash collapse proposed by the present invention from a second perspective;

[0039] Figure 3 A schematic diagram of the three-dimensional structure of a collecting box and a bottom plate in a control device for conveying and collecting dust to avoid ash collapse proposed by the present invention;

[0040] Figure 4 A schematic diagram of the three-dimensional structure of a bottom plate in a control device for conveying and collecting raw coal and preventing ash collapse proposed by the present invention;

[0041] Figure 5 A schematic diagram of the three-dimensional structure of a screening box in a control device for conveying and collecting dust to avoid ash collapse proposed by the present invention;

[0042] Figure 6 A schematic diagram of the three-dimensional structure of a conveyor belt in a control device for conveying raw coal and collecting dust to avoid ash collapse proposed by the present invention;

[0043] Figure 7 A schematic diagram of the three-dimensional structure of a V-shaped box in a control device for conveying and collecting dust to avoid ash collapse proposed by the present invention;

[0044] Figure 8 A schematic diagram of the three-dimensional structure of a V-shaped box in a control device for conveying and collecting raw coal and avoiding ash collapse proposed by the present invention from a second viewing angle;

[0045] Fig. 9 A three-dimensional cross-sectional structural schematic diagram of a screening box in a control device for conveying and collecting dust to avoid ash collapse proposed by the present invention;

[0046] Fig.10 This is a schematic diagram of the three-dimensional structure of a rectangular frame in a control device for conveying raw coal and collecting dust to avoid ash collapse proposed by the present invention.

[0047] In the figure: 1, screening box; 2, feeding box; 3, V-shaped box; 4, collecting box; 5, L-shaped fixing plate; 6, bottom plate; 7, L-shaped baffle plate; 8, U-shaped frame; 9, rectangular baffle plate; 10, first chute; 11, first receiving cavity; 12, first rectangular plate; 13, second rectangular plate; 14, rectangular groove; 15, compression spring; 16, pushing plate; 17, rotating plate; 18, first discharge port; 19, vertical plate; 20, conveyor belt; 21, rotating roller; 22, second chute; 23 , servo motor; 24, through hole; 25, first spring; 26, cover plate; 27, convex plate; 28, fourth inclined slot; 29, fixed triangular block; 30, sieve hole; 31, L-shaped plate; 32, second discharge port; 33, triangular plate; 34, No. 1 triangular slot; 35, feed port; 36, No. 2 triangular slot; 37, third inclined slot; 38, bristles; 39, second spring; 40, rectangular frame; 41, second storage cavity; 42, mounting plate; 43, rectangular hole; 44, inclined block. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0049] Example 1

[0050] Reference Figure 1-10 A control device for collecting dust during raw coal transportation to avoid ash collapse, which is used in the field of raw coal transportation, comprises: a bottom plate 6, four L-shaped fixed plates 5 symmetrically connected to the top of the bottom plate 6, a screening box 1 fixedly connected between the four L-shaped fixed plates 5, and a feed port 35 is opened on both sides of the top of the screening box 1;

[0051] A screening component is arranged inside the screening box 1 and is used to screen the raw coal. The screening component includes an L-shaped plate 31 fixedly connected to the inner wall of one side of the screening box 1. The L-shaped plate 31 is located on one side of the first discharge port 18. A No. 1 triangular groove 34 is provided on the top of the L-shaped plate 31. An inclined block 44 is fixedly connected to the top of the L-shaped plate 31. A plurality of sieve holes 30 are provided inside the inclined block 44. A fixed triangular block 29 is fixedly connected to the inner wall of the side of the screening box 1 away from the L-shaped plate 31. A triangular plate 33 is fixedly connected to the bottom inner wall of the screening box 1. Smaller powdered raw coal can slide through the No. 1 triangular groove 34 and be discharged to the inside of the through hole 24 through the first discharge port 18. It gradually slides along the through hole 24 and enters the inside of the first receiving chamber 11 to complete collection. The setting of the first inclined slot 10 can help the bounced raw coal slide into the inside of the device and will not remain on the top of the screening box 1.

[0052] A first discharge port 18 is provided in the middle of one side of the screening box 1;

[0053] The first discharging assembly is arranged at a side of the screening box 1 near the first discharging port 18 and is used to collect powdered raw coal. The first discharging assembly includes a V-shaped box 3 fixedly connected to one side of the screening box 1. A through hole 24 connected to the first discharging port 18 is provided inside the V-shaped box 3. A cover plate 26 is slidably connected to the bottom of one side of the V-shaped box 3. A fourth chute 28 used in conjunction with the through hole 24 is provided on one side of the cover plate 26. Both sides of the bottom of the cover plate 26 are fixedly connected to convex plates 27. The plate 27 is used in conjunction with the collecting box 4. Two symmetrically arranged first springs 25 are fixedly connected between the top of the cover plate 26 and the bottom of the screening box 1. When the empty collecting box 4 is completely moved above the push plate 16, the push plate 16 drives the collecting box 4 to move vertically upward under the elastic force of the compression spring 15. The collecting box 4 pushes the two convex plates 27 to move vertically upward. The convex plates 27 drive the cover plate 26 to move vertically upward. The cover plate 26 squeezes the first springs 25 and gradually opens the through hole 24 to facilitate the discharge of materials.

[0054] A second discharge port 32 is provided at the bottom of the screening box 1 on one side away from the first discharge port 18;

[0055] The second discharging assembly is arranged at the bottom of the screening box 1 and is used to collect lump raw coal. The second discharging assembly includes a U-shaped frame 8 fixedly connected to the bottom of the screening box 1. Two symmetrically arranged rotating rollers 21 are rotatably connected between the inner walls of the two sides of the U-shaped frame 8. The outer walls of the rotating rollers 21 are provided with pulleys. The outer wall transmission sleeves of the two pulleys are provided with the same conveyor belt 20. The top of the U-shaped frame 8 is fixedly connected with two symmetrically arranged rectangular baffles 9. A servo motor 23 is fixedly connected to one side of the U-shaped frame 8. The output shaft of the servo motor 23 rotates through the U-shaped frame 8 and is fixedly connected to one end of one of the rotating rollers 21. The servo motor 23 is started, and the output shaft of the servo motor 23 drives the rotating roller 21 to rotate. The rotating roller 21 drives the conveyor belt 20 to rotate through the pulley. The conveyor belt 20 drives the raw coal above to be transported out. At the same time, the setting of the rectangular baffle 9 can prevent the raw coal from spilling out. The setting of the second chute 22 can help part of the raw coal adhering to the conveyor belt 20 to flow back and enter the second receiving chamber 41 for collection;

[0056] A plurality of collecting boxes 4, wherein the plurality of collecting boxes 4 are arranged on the top of the bottom plate 6;

[0057] The brake assembly is arranged on the top of the bottom plate 6 and is used to brake the position of the collection box 4. The brake assembly includes a rectangular groove 14 opened on the top of the bottom plate 6. A push plate 16 slides through the inner wall of the rectangular groove 14. Four compression springs 15 are fixedly connected in pairs between the bottom of the push plate 16 and the bottom inner wall of the rectangular groove 14. An L-shaped baffle plate 7 is fixedly connected to one side of the top of the bottom plate 6, wherein two second rectangular plates 13 are fixedly connected to one side of the two L-shaped fixing plates 5, and two first rectangular plates 12 are fixedly connected to one side of the collection box 4. The first rectangular plates 12 are fixedly connected to the bottom of the bottom plate 6. The L-shaped plate 12 is used in conjunction with the second rectangular plate 13. As the raw coal enters, the weight of the collection box 4 gradually increases. At this time, the collection box 4 squeezes the push plate 16 to move vertically downward. The push plate 16 squeezes the compression spring 15 and enters the interior of the rectangular groove 14. The collection box 4 drives the two first rectangular plates 12 to move vertically downward. When the first rectangular plate 12 is completely moved to the bottom of the second rectangular plate 13, at this time, since the top of the screening box 1 is tilted, the collection box 4 slides to one side of the L-shaped baffle 7, and the push plate 16 cannot bounce up. At this time, the next collection box 4 moves to the top of the push plate 16;

[0058] A feeding assembly is arranged on the top of both sides of the screening box 1 and is used for raw coal to enter. The feeding assembly includes a feeding box 2 fixedly connected to one side of the screening box 1. A third chute 37 is provided on the top of the feeding box 2. The third chute 37 is used in conjunction with the feeding port 35. Two symmetrically arranged first chute 10 are provided on the top of the screening box 1. The first chute 10 is used in conjunction with the feeding box 2. The raw coal is discharged through the feeding box 2 and fed into the inside of the feeding port 35 along the inclined surface of the third chute 37. At this time, the rotating plate 17 is opened, and the raw coal can be fed into the inside of the screening box 1. The raw coal on both sides falls on the top of the inclined block 44. After being screened by the sieve hole 30, large pieces of raw coal slide down along the inclined surface of the triangular plate 33 and are finally discharged through the second discharge port 32.

[0059] A second triangular groove 36 is provided on the top inner wall of the screening box 1;

[0060] An anti-ash collapse component is arranged inside the No. 2 triangular groove 36 and is used to avoid ash collapse. The anti-ash collapse component includes two rectangular frames 40 symmetrically arranged on the inner wall of the No. 2 triangular groove 36 and slidably connected. A rectangular hole 43 is opened inside the rectangular frame 40. A plurality of mounting plates 42 are fixedly connected to the inner wall of one side of the rectangular hole 43. A plurality of bristles 38 are arranged on the top of the mounting plate 42. The same second spring 39 is fixedly connected between the two rectangular frames 40. In order to avoid ash collapse, a No. 2 triangular groove 36 is arranged on the top inner wall of the screening box 1. Whenever the rotating plate 17 is opened, the rotating plate 17 pushes the rectangular frame 40 to move horizontally. The two rectangular frames 40 approach each other and squeeze the second spring 39. At this time, the rectangular frame 40 drives the mounting plate 42 to move horizontally. The mounting plate 42 drives the bristles 38 to move horizontally. The bristles 38 sweep the ash on the No. 2 triangular groove 36, which is easy to use.

[0061] Example 2

[0062] refer to Figure 1-10 , improved on the basis of Example 1: two symmetrically arranged rotating plates 17 are rotatably connected between the inner walls on both sides of the screening box 1, the rotating plates 17 cooperate with the feed port 35, and the rotating plates 17 are used in conjunction with the rectangular frame 40. A second chute 22 is provided on the bottom inner wall of the U-shaped frame 8, a vertical plate 19 is fixedly connected to the bottom of the screening box 1, a first receiving chamber 11 and a second receiving chamber 41 are provided inside the collecting box 4, and the vertical plate 19 is located between the first receiving chamber 11 and the second receiving chamber 41.

[0063] However, as is well known to those skilled in the art, the working principle and wiring method of the servo motor 23 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any selection according to their needs or convenience.

[0064] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A control device for raw coal transportation and dust collection to avoid ash collapse, characterized in that: include: A bottom plate (6), the top of the bottom plate (6) being fixedly connected to four symmetrical L-shaped fixing plates (5), a screening box (1) being fixedly connected between the four L-shaped fixing plates (5), and both sides of the top of the screening box (1) being provided with feed openings (35); A screening component, which is arranged inside the screening box (1) and is used to screen the raw coal; A first discharge port (18) is provided in the middle of one side of the screening box (1); A first discharge assembly, which is arranged on one side of the screening box (1) near the first discharge port (18) and is used to collect powdered raw coal; A second discharge port (32) is provided at the bottom of the screening box (1) on a side away from the first discharge port (18); A second discharging assembly, which is arranged at the bottom of the screening box (1) and is used to collect lump raw coal; A plurality of collection boxes (4), wherein the plurality of collection boxes (4) are all arranged on the top of the bottom plate (6); A brake assembly, the brake assembly is arranged on the top of the bottom plate (6) and is used to brake the position of the collection box (4), the brake assembly comprises a rectangular groove (14) opened on the top of the bottom plate (6), a push plate (16) slidingly penetrates the inner wall of the rectangular groove (14), four compression springs (15) are fixedly connected in pairs between the bottom of the push plate (16) and the bottom inner wall of the rectangular groove (14), an L-shaped baffle (7) is fixedly connected to one side of the top of the bottom plate (6), wherein two second rectangular plates (13) are fixedly connected to one side of the two L-shaped fixed plates (5), and two first rectangular plates (12) are fixedly connected to one side of the collection box (4), and the first rectangular plates (12) are used in conjunction with the second rectangular plates (13); A feeding assembly, which is arranged on the top of both sides of the screening box (1) and is used for raw coal to enter; A second triangular groove (36) is provided on the inner wall of the top of the screening box (1); An anti-ash collapse component, the anti-ash collapse component is arranged inside the second triangular groove (36) and is used to prevent ash collapse, the anti-ash collapse component comprises two rectangular frames (40) symmetrically arranged and slidably connected to the inner wall of the second triangular groove (36), a rectangular hole (43) is opened inside the rectangular frame (40), a plurality of mounting plates (42) are fixedly connected to the inner wall of one side of the rectangular hole (43), a plurality of bristles (38) are arranged on the top of the mounting plate (42), and the same second spring (39) is fixedly connected between the two rectangular frames (40); The first discharge assembly comprises a V-shaped box (3) fixedly connected to one side of the screening box (1); a through hole (24) communicating with the first discharge port (18) is provided inside the V-shaped box (3); a cover plate (26) is slidably connected to the bottom of one side of the V-shaped box (3); a fourth chute (28) used in conjunction with the through hole (24) is provided on one side of the cover plate (26); convex plates (27) are fixedly connected to both sides of the bottom of the cover plate (26); the convex plates (27) are used in conjunction with the collecting box (4); and two symmetrically arranged first springs (25) are fixedly connected between the top of the cover plate (26) and the bottom of the screening box (1); The feed assembly comprises a feed box (2) fixedly connected to one side of the screening box (1); a third chute (37) is provided on the top of the feed box (2); the third chute (37) is used in conjunction with the feed port (35); two first chute (10) are symmetrically arranged on the top of the screening box (1); the first chute (10) is used in conjunction with the feed box (2); The bottom of the screening box (1) is fixedly connected with a vertical plate (19), the interior of the collecting box (4) is provided with a first receiving cavity (11) and a second receiving cavity (41), and the vertical plate (19) is located between the first receiving cavity (11) and the second receiving cavity (41); Two symmetrically arranged rotating plates (17) are rotatably connected between the inner walls on both sides of the screening box (1); the rotating plates (17) cooperate with the feed opening (35); and the rotating plates (17) cooperate with the rectangular frame (40) for use.

2. A control device for raw coal transportation and dust collection to avoid ash collapse according to claim 1, characterized in that: The screening assembly comprises an L-shaped plate (31) fixedly connected to an inner wall of one side of a screening box (1), the L-shaped plate (31) being located on one side of a first discharge port (18), a first triangular groove (34) being provided on the top of the L-shaped plate (31), an inclined block (44) being fixedly connected to the top of the L-shaped plate (31), a plurality of sieve holes (30) being provided inside the inclined block (44), a fixed triangular block (29) being fixedly connected to an inner wall of a side of the screening box (1) away from the L-shaped plate (31), and a triangular plate (33) being fixedly connected to the bottom inner wall of the screening box (1).

3. A control device for raw coal transportation and dust collection to avoid ash collapse according to claim 1, characterized in that: The second discharging assembly comprises a U-shaped frame (8) fixedly connected to the bottom of the screening box (1); two symmetrically arranged rotating rollers (21) are rotatably connected between the inner walls of both sides of the U-shaped frame (8); the outer walls of the rotating rollers (21) are provided with pulleys; the outer wall transmission sleeves of the two pulleys are provided with the same conveyor belt (20); the top of the U-shaped frame (8) is fixedly connected to two symmetrically arranged rectangular baffles (9); one side of the U-shaped frame (8) is fixedly connected to a servo motor (23); the output shaft of the servo motor (23) rotates through the U-shaped frame (8) and is fixedly connected to one end of one of the rotating rollers (21).

4. A control device for raw coal transportation and dust collection to avoid ash collapse according to claim 3, characterized in that: A second inclined groove (22) is provided on the inner wall of the bottom of the U-shaped frame (8).

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