A belt coal cleaning device

Abstract

The present invention relates to the technical field of coal powder conveying, and discloses a belt coal cleaning device, comprising a lifting plate, a cleaning assembly is arranged above the lifting plate, the cleaning assembly comprises a return hopper arranged above the lifting plate, a brush is rotatably connected inside the return hopper, and sliding holes are opened on both sides of the return hopper. The present invention abuts against the bottom surface of the belt of the upper conveyor through the brush, and makes the bottom end of the return hopper correspond to the top of the belt of the lower conveyor, then drives the brush to rotate and scrape the bottom of the belt of the upper conveyor, so that the coal powder adhered to the bottom of the belt is cleaned and falls into the inside of the return hopper, and then drives the scraper to scrape the coal powder inside the return hopper into the top surface of the belt of the lower conveyor, thereby effectively realizing the cleaning of the coal powder at the bottom of the belt, and at the same time, the cleaned coal powder is conveyed to the lower conveyor, and there is no need to collect the cleaned coal powder, which effectively increases the efficiency of coal powder conveying.

Description

Technical Field

[0001] The invention relates to the technical field of coal powder conveying, and in particular to a belt-dropped coal cleaning device. Background Art

[0002] Thermal power plants use coal conveyor belts to transport coal powder. Due to the long transportation distance, multi-stage belt transportation is set up. There is a certain height difference between the front and rear belts. When the upper conveyor transfers the coal powder to the lower conveyor, it falls to the tail of the lower conveyor due to gravity. During the falling process, a large amount of dust is generated, causing pollution and wasting coal powder.

[0003] An existing device for cleaning fallen coal from a coal conveyor belt in a thermal power plant (publication number: CN220949915U) has at least the following disadvantages: although the device uses a hard brush to clean the coal powder adhered to the upper conveyor belt and collects it in a collecting box, the brushing of the hard brush will cause the brushed coal powder to splash forward and pollute the workplace, and after the coal powder is collected in the collecting box, the staff will need to pour the collected coal powder onto the next conveyor belt, which affects the coal powder transportation efficiency. For this reason, the present invention is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a belt coal cleaning device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A belt coal cleaning device, a lifting plate, a cleaning assembly is arranged above the lifting plate, the cleaning assembly includes a return hopper arranged above the lifting plate, a brush is rotatably connected inside the return hopper, sliding holes are opened on the left and right sides of the return hopper, sliding blocks are slidably arranged inside the sliding holes, and a scraper is rotatably connected between the two sliding blocks.

[0007] As a further solution of the present invention, two fixed plates are fixed on the right side of the lifting plate, a screw rod is rotatably connected between the two fixed plates, a connecting plate is threadedly connected to the outer wall of the screw rod, a rack is fixed on one side of the connecting plate, a gear is fixed on the right end of the scraper, and the rack is meshed with the gear.

[0008] As a further solution of the present invention, a first motor is fixed to the right side of the return hopper, and the output shaft end of the first motor is fixed to the right end of the brush. A second motor is fixed to the front side of the corresponding fixed plate, and the output shaft end of the second motor is fixed to the front end of the screw rod.

[0009] As a further solution of the present invention, two rebound plates are arranged on the top surface of the return hopper, and a stop roller is rotatably connected between the two rebound plates.

[0010] As a further solution of the present invention, a support plate is fixed to the top surface of the lifting plate, and a rotating block is rotatably connected to the top surface of the support plate. The top surface of the rotating block is fixed to the bottom surface of the return hopper, and a first hydraulic rod is fixed to the top surface of the lifting plate near the front side. A movable hinge is fixed to one end of the telescopic rod of the first hydraulic rod, and the top surface of the movable hinge is fixed to the bottom surface of the return hopper.

[0011] As a further solution of the present invention, two rebound grooves are provided on the top surface of the lifting plate, the rebound plate is slidably inserted into the inside of the rebound groove, and three springs are fixed between the bottom surface of the rebound plate and the bottom surface of the inner wall of the rebound groove.

[0012] As a further solution of the present invention, a bottom plate is arranged below the lifting plate, a second hydraulic rod is fixed to the top surface of the bottom plate, and one end of the telescopic rod of the second hydraulic rod is fixed to the bottom surface of the lifting plate.

[0013] As a further solution of the present invention, a limiting rod is fixed between the two fixed plates, the outer walls of the connecting plate and the limiting rod are slidably arranged, support tubes are fixed at the four corners of the top surface of the bottom plate, a support rod is slidably inserted inside the support tube, and the top end of the support rod is fixed to the bottom surface of the lifting plate.

[0014] As a further solution of the present invention, universal wheels are fixed at the four corners of the bottom surface of the bottom plate, and a push rod is fixed on the top surface of the bottom plate.

[0015] As a further solution of the present invention, a first rubber pad is fixed to the top surface of the sliding block, and a second rubber pad is fixed to the bottom surface of the sliding block. The first rubber pad and the second rubber pad are respectively in contact with the top surface and the bottom surface of the inner wall of the sliding hole.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The brush is brought into contact with the bottom surface of the belt of the upper conveyor, and the bottom end of the return hopper corresponds to the top of the belt of the lower conveyor. The brush is then driven to rotate and scrape the bottom of the belt of the upper conveyor, so that the coal powder adhering to the bottom of the belt is cleaned off and falls into the return hopper. The scraper is then driven to scrape the coal powder inside the return hopper into the top surface of the belt of the lower conveyor, thereby effectively cleaning the coal powder at the bottom of the belt and conveying the cleaned coal powder to the lower conveyor. There is no need to collect the cleaned coal powder and process it later, which effectively increases the efficiency of coal powder transportation.

[0018] By setting a blocking roller to abut against the bottom surface of the belt of the upper conveyor, the front of the brush can be shielded to prevent the coal powder from splashing when the brush brushes down the coal powder, thereby affecting the normal transportation of the coal powder.

[0019] The return hopper can be driven to rotate by the first hydraulic rod, so that the return hopper can adaptively rotate according to the height difference between the upper conveyor and the lower conveyor, ensuring that the brush on the return hopper is always in contact with the bottom surface of the belt of the upper conveyor, and making the front end of the return hopper correspond to the top surface of the belt of the lower conveyor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of a belt coal cleaning device proposed by the present invention;

[0021] Figure 2 This is a schematic diagram of the three-dimensional disassembled structure of a belt coal cleaning device proposed by the present invention;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the bottom plate of a belt coal cleaning device proposed by the present invention;

[0023] Figure 4 A schematic diagram of the three-dimensional structure of a lifting plate of a belt coal cleaning device proposed by the present invention;

[0024] Figure 5 This is a schematic diagram of the three-dimensional structure of the return hopper of a belt coal cleaning device proposed by the present invention;

[0025] Figure 6 A schematic diagram of the three-dimensional structure of the retaining roller of a belt coal cleaning device proposed by the present invention;

[0026] Figure 7 for Figure 6 A schematic diagram of the enlarged local three-dimensional structure of the center.

[0027] In the figure: 1. lifting plate; 2. return hopper; 201. brush; 202. sliding hole; 203. sliding block; 204. scraper; 205. fixed plate; 206. screw rod; 207. rack; 208. gear; 209. first motor; 210. second motor; 211. connecting plate; 3. rebound plate; 301. stop roller; 4. support plate; 401. rotating block; 402. first hydraulic rod; 403. movable hinge; 5. rebound groove; 501. spring; 6. bottom plate; 601. second hydraulic rod; 7. limit rod; 701. support cylinder; 702. support rod; 8. universal wheel; 801. push rod; 9. first rubber pad; 901. second rubber pad. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Reference Figure 1-Figure 5 A belt coal cleaning device, a lifting plate 1, a cleaning assembly is arranged above the lifting plate 1, the cleaning assembly includes a return hopper 2 arranged above the lifting plate 1, a brush 201 is rotatably connected inside the return hopper 2, sliding holes 202 are opened on the left and right sides of the return hopper 2, a sliding block 203 is slidably arranged inside the sliding hole 202, and a scraper 204 is rotatably connected between the two sliding blocks 203.

[0032] Reference Figure 2-Figure 6In this embodiment, two fixed plates 205 are fixed on the right side of the lifting plate 1, and a screw rod 206 is rotatably connected between the two fixed plates 205. The outer wall of the screw rod 206 is threadedly connected to a connecting plate 211, and a rack 207 is fixed to one side of the connecting plate 211. A gear 208 is fixed to the right end of the scraper 204, and the rack 207 is meshed with the gear 208, and abuts against the bottom surface of the belt of the upper conveyor through the brush 201, so that the bottom end of the return hopper 2 corresponds to the lower conveyor. The brush 201 is then driven to rotate in the opposite direction of the upper conveyor belt, and the coal powder adhering to the bottom of the belt is cleaned off and falls into the inner part of the return hopper 2. At this time, the screw rod 206 is started to rotate. Under the threaded connection between the connecting plate 211 and the screw rod 206, the connecting plate 211 drives the rack 207 to move backward. Due to the meshing action of the rack 207 and the gear 208, the gear 208 is driven to rotate when the rack 207 moves horizontally, so that the scraper When the gear 208 moves to the front end of the rack 207, the gear 208 is limited and moves with the connecting plate 211, so that the scraper 204 moves synchronously to the rear of the return hopper 2. During this process, the scraper 204 avoids the coal powder inside the return hopper 2. At this time, the screw rod 206 is driven to rotate in the opposite direction, so that the rack 207 moves forward and drives the gear 208 to rotate, so that the scraper 204 rotates to the position parallel to the bottom surface of the return hopper 2. When the rear end of the rack 207 abuts against the gear 208, the scraper 204 perpendicular to the inner bottom surface of the return hopper 2 is driven to move toward the front end of the return hopper 2, and the coal powder inside the return hopper 2 is scraped from the return hopper 2 to the top of the lower conveyor, thereby effectively cleaning the coal powder at the bottom of the belt and conveying the cleaned coal powder to the lower conveyor. There is no need to collect the cleaned coal powder and process it later, which effectively increases the efficiency of coal powder transportation.

[0033] Reference Figure 2-Figure 6 In this embodiment, a first motor 209 is fixed to the right side of the return hopper 2, and the output shaft end of the first motor 209 is fixed to the right end of the brush 201. A second motor 210 is fixed to the front side of the corresponding fixed plate 205, and the output shaft end of the second motor 210 is fixed to the front end of the screw rod 206. By starting the first motor 209, the brush 201 is driven to rotate in the direction opposite to the moving direction of the upper conveyor belt. By starting the second motor 210, the screw rod 206 is driven to rotate and the scraper 204 is driven to scrape the coal powder inside the return hopper 2.

[0034] Reference Figure 2-Figure 6In this embodiment, two rebound plates 3 are provided on the top surface of the return hopper 2, and a blocking roller 301 is rotatably connected between the two rebound plates 3. By setting the blocking roller 301 to abut against the bottom surface of the belt of the upper conveyor, the front of the brush 201 can be shielded to prevent the brush 201 from splashing coal powder when brushing off the coal powder, thereby affecting the normal transportation of the coal powder.

[0035] Reference Figure 3-Figure 7 In this embodiment, a support plate 4 is fixed to the top surface of the lifting plate 1, and a rotating block 401 is rotatably connected to the top surface of the support plate 4. The top surface of the rotating block 401 is fixed to the bottom surface of the return hopper 2. A first hydraulic rod 402 is fixed to the top surface of the lifting plate 1 near the front side, and a movable hinge 403 is fixed to one end of the telescopic rod of the first hydraulic rod 402. The top surface of the movable hinge 403 is fixed to the bottom surface of the return hopper 2. The return hopper 2 can be driven to rotate with the top end of the support plate 4 as the center through the first hydraulic rod 402, so that the return hopper 2 can be adaptively rotated according to the height difference between the upper conveyor and the lower conveyor, ensuring that the brush 201 on the return hopper 2 is always in contact with the bottom surface of the belt of the upper conveyor, and making the front end of the return hopper 2 correspond to the top surface of the belt of the lower conveyor.

[0036] Reference Figure 4-Figure 7 In this embodiment, two rebound grooves 5 are provided on the top surface of the lifting plate 1, and the rebound plate 3 is slidably inserted into the inside of the rebound groove 5. Three springs 501 are fixed between the bottom surface of the rebound plate 3 and the bottom surface of the inner wall of the rebound groove 5. By setting the rebound plate 3 and the rebound groove 5 to slide internally and under the elastic force of the spring 501, the blocking roller 301 can better abut against the bottom surface of the belt of the upper conveyor belt, thereby ensuring the shielding effect of the blocking roller 301.

[0037] Reference Figure 4-Figure 7 In this embodiment, a bottom plate 6 is provided below the lifting plate 1, and a second hydraulic rod 601 is fixed to the top surface of the bottom plate 6. One end of the telescopic rod of the second hydraulic rod 601 is fixed to the bottom surface of the lifting plate 1. By providing the second hydraulic rod 601, the lifting plate 1 and the brush 201 can be driven to rise and fall, so that the height of the brush 201 can be adjusted according to the height of the upper conveyor.

[0038] Reference Figure 4-Figure 7 In this embodiment, a limit rod 7 is fixed between the two fixed plates 205, and the outer wall of the connecting plate 211 and the limit rod 7 is slidably arranged. Support tubes 701 are fixed at the four corners of the top surface of the bottom plate 6. A support rod 702 is slidably inserted inside the support tube 701. The top of the support rod 702 is fixed to the bottom surface of the lifting plate 1. By setting the limit rod 7, the movement of the connecting plate 211 can be limited and supported. By slidingly inserting the support rod 702 and the support tube 701, the lifting and lowering of the lifting plate 1 can be limited and supported.

[0039] Reference Figure 5-Figure 7 In this embodiment, universal wheels 8 are fixed at the four corners of the bottom surface of the bottom plate 6, and a push rod 801 is fixed to the top surface of the bottom plate 6. The push rod 801 is arranged in conjunction with the universal wheels 8 to facilitate better movement of the device.

[0040] Reference Figure 5-Figure 7 In this embodiment, a first rubber pad 9 is fixed to the top surface of the sliding block 203, and a second rubber pad 901 is fixed to the bottom surface of the sliding block 203. The first rubber pad 9 and the second rubber pad 901 are respectively in contact with the top surface and the bottom surface of the inner wall of the sliding hole 202. By arranging the first rubber pad 9 and the second rubber pad 901 to respectively in contact with the top surface and the bottom surface of the inner wall of the sliding hole 202, when the sliding block 203 slides inside the sliding hole 202, a damping effect is exerted on the sliding block 203, so that when the rack 207 moves and drives the gear 208 to rotate, the sliding block 203 will not slide inside the sliding hole 202 due to the friction force.

[0041] From the above description, it can be seen that the above-mentioned embodiment of the present invention achieves the following technical effects: in use, by holding the push rod 801 and cooperating with the universal wheel 8 to move the device to the bottom of the upper transmission belt, the second hydraulic rod 601 is then started to drive the lifting plate 1 and the brush 201 to rise and fall, so that the brush 201 abuts against the bottom surface of the belt of the upper conveyor, and at this time, the stop roller 301 synchronously abuts against the bottom surface of the belt of the upper conveyor and makes the rebound plate 3 and the internal sliding insertion of the rebound groove 5, and compresses the spring 501, so that the rebound force of the spring 501 makes the stop roller 301 better abut against the bottom surface of the belt of the upper conveyor, and then the first hydraulic rod 402 is started to drive the return hopper 2 to rotate, so that the return hopper 2 is supported by the support plate 4. The end is rotated as the center of the circle, so that the return hopper 2 can adaptively rotate according to the height difference between the upper conveyor and the lower conveyor, ensuring that the brush 201 on the return hopper 2 is always in contact with the bottom surface of the belt of the upper conveyor, and the front end of the return hopper 2 corresponds to the top surface of the belt of the lower conveyor. At this time, the first motor 209 is started to drive the brush 201 to rotate in the opposite direction of the movement of the upper conveyor belt, and the coal powder adhering to the bottom of the belt is cleaned off and falls into the interior of the return hopper 2. At this time, the second motor 210 is started to drive the screw rod 206 to rotate. Under the threaded connection between the connecting plate 211 and the screw rod 206, the connecting plate 211 drives the rack 207 to move backward. Due to the meshing action of the rack 207 and the gear 208, When the rack 207 moves horizontally, it drives the gear 208 to rotate, so that the scraper 204 rotates to a position parallel to the inner bottom surface of the return hopper 2. When the gear 208 moves to the front end of the rack 207, the gear 208 is limited and moves with the connecting plate 211, so that the scraper 204 moves synchronously to the rear of the return hopper 2. During this process, the scraper 204 will avoid the coal powder inside the return hopper 2. At this time, the screw rod 206 is driven to rotate in the opposite direction, so that the rack 207 moves forward and drives the gear 208 to rotate, so that the scraper 204 rotates to a position perpendicular to the inner bottom surface of the return hopper 2. When the rear end of the rack 207 abuts against the gear 208, it drives the scraper 204 perpendicular to the inner bottom surface of the return hopper 2 to move toward the front end of the return hopper 2. The coal powder inside the return hopper 2 is scraped from the return hopper 2 to the top of the lower conveyor, thereby effectively cleaning the coal powder at the bottom of the belt, and at the same time transporting the cleaned coal powder to the lower conveyor, without the need to collect the cleaned coal powder and process it later, effectively increasing the efficiency of coal powder transportation. The limit rod 7 can be provided to limit and support the movement of the connecting plate 211, and the support rod 702 is inserted into the internal sliding of the support tube 701 to limit and support the lifting of the lifting plate 1. The first rubber pad 9 and the second rubber pad 901 are provided to respectively abut the top surface and the bottom surface of the inner wall of the sliding hole 202, so that when the sliding block 203 slides inside the sliding hole 202, the sliding block 203 is damped.When the rack 207 moves and drives the gear 208 to rotate, the sliding block 203 will not slide inside the sliding hole 202 due to friction.

[0042] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A belt coal cleaning device, comprising a lifting plate (1), characterized in that: A cleaning assembly is arranged above the lifting plate (1), and the cleaning assembly comprises a return hopper (2) arranged above the lifting plate (1), a brush (201) is rotatably connected inside the return hopper (2), sliding holes (202) are provided on both left and right sides of the return hopper (2), a sliding block (203) is slidably arranged inside the sliding hole (202), and a scraper (204) is rotatably connected between the two sliding blocks (203).

2. A belt coal cleaning device according to claim 1, characterized in that: Two fixed plates (205) are fixed on the right side of the lifting plate (1), a screw rod (206) is rotatably connected between the two fixed plates (205), the outer wall of the screw rod (206) is threadedly connected to a connecting plate (211), a rack (207) is fixed on one side of the connecting plate (211), a gear (208) is fixed on the right end of the scraper (204), and the rack (207) is meshed with the gear (208).

3. A belt coal cleaning device according to claim 2, characterized in that: A first motor (209) is fixed to the right side of the return hopper (2), the output shaft end of the first motor (209) is fixed to the right end of the brush (201), a second motor (210) is fixed to the front side of the corresponding fixed plate (205), and the output shaft end of the second motor (210) is fixed to the front end of the screw rod (206).

4. A belt coal cleaning device according to claim 3, characterized in that: The top surface of the return hopper (2) is provided with two rebound plates (3), and a stop roller (301) is rotatably connected between the two rebound plates (3).

5. A belt coal cleaning device according to claim 4, characterized in that: A support plate (4) is fixed to the top surface of the lifting plate (1), and a rotating block (401) is rotatably connected to the top surface of the support plate (4), and the top surface of the rotating block (401) is fixed to the bottom surface of the return hopper (2). A first hydraulic rod (402) is fixed to the top surface of the lifting plate (1) near the front side, and a movable hinge (403) is fixed to one end of the telescopic rod of the first hydraulic rod (402), and the top surface of the movable hinge (403) is fixed to the bottom surface of the return hopper (2).

6. A belt coal cleaning device according to claim 5, characterized in that: The top surface of the lifting plate (1) is provided with two rebound grooves (5), the rebound plate (3) is slidably inserted into the inside of the rebound groove (5), and three springs (501) are fixed between the bottom surface of the rebound plate (3) and the bottom surface of the inner wall of the rebound groove (5).

7. A belt coal cleaning device according to claim 6, characterized in that: A bottom plate (6) is arranged below the lifting plate (1), a second hydraulic rod (601) is fixed to the top surface of the bottom plate (6), and one end of the telescopic rod of the second hydraulic rod (601) is fixed to the bottom surface of the lifting plate (1).

8. The belt coal cleaning device according to claim 7, characterized in that: A limit rod (7) is fixed between the two fixed plates (205), the connecting plate (211) and the outer wall of the limit rod (7) are slidably arranged, support tubes (701) are fixed at the four corners of the top surface of the bottom plate (6), a support rod (702) is slidably inserted inside the support tube (701), and the top end of the support rod (702) is fixed to the bottom surface of the lifting plate (1).

9. A belt coal cleaning device according to claim 8, characterized in that: Universal wheels (8) are fixed at the four corners of the bottom surface of the bottom plate (6), and a push rod (801) is fixed on the top surface of the bottom plate (6).

10. A belt coal cleaning device according to claim 9, characterized in that: A first rubber pad (9) is fixed to the top surface of the sliding block (203), and a second rubber pad (901) is fixed to the bottom surface of the sliding block (203). The first rubber pad (9) and the second rubber pad (901) are respectively in contact with the top surface and the bottom surface of the inner wall of the sliding hole (202).

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