A cleaning system for a belt conveyor

Abstract

The application discloses a kind of cleaning systems for belt conveyor, it is related to the technical field of belt conveyor, solve the technical problems that waste is cleaned on the surface of driving belt on belt conveyor, and surface material residue aggravates driving belt wear;Including belt conveyor, the belt conveyor includes the driving roller arranged at top, two driving belts are sleeved on the driving roller;The bottom of the driving belt is provided with material recycling equipment;The present application can clean the surface of driving belt by combining air and water cleaning device and return stroke material scraping device, increase the cleaning degree of the surface of driving belt, reduce the material residue on the surface of driving belt, reduce the wear between driving belt and driving roller, facilitate subsequent conveying of other materials of driving belt, without material adulteration, and the material cleaned from the surface of driving belt is collected, without causing material waste and falling to the ground to affect the environment, increase the stability of belt conveyor and prolong service life.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of belt conveyors, and particularly relates to a cleaning system for a belt conveyor. BACKGROUND

[0002] The belt conveyor can be divided into heavy-duty belt conveyors such as mine belt conveyors and light-duty belt conveyors such as belt conveyors used in electronic plastic, food, light industry, chemical industry and medicine industries according to conveying capacity. The belt conveyor has the advantages of strong conveying capacity, long conveying distance, simple structure, easy maintenance, convenient program control and automatic operation.

[0003] Some conventional belt conveyors have the problems that material residues and dust accumulation on the surface of the conveying belt increase friction, increase energy consumption, even affect the service life of the conveying belt, the material residues on the surface of the conveying belt are not easy to recycle, cleaning is wasted, and the environment is deteriorated. SUMMARY

[0004] The application aims to solve at least one of the technical problems in the prior art; for this purpose, the application provides a cleaning system for a belt conveyor.

[0005] The cleaning system for the belt conveyor comprises a belt conveyor, the belt conveyor comprises driving rollers arranged at the top, driving belts are sleeved on the two driving rollers, the bottom of the driving belt is provided with a material recycling device, the material recycling device comprises a wind-water cleaning device for cleaning the bottom of the driving belt and a return scraping device located below the wind-water cleaning device.

[0006] The wind-water cleaning device comprises a mounting frame, a cleaning member is arranged in the mounting frame, the cleaning member comprises a water jet flushing piece, a rubber alloy cleaning plate, a polyurethane cleaning plate and a air knife plate which are sequentially arranged in the mounting frame.

[0007] The return scraping device comprises a conveying belt horizontally located below the wind-water cleaning device.

[0008] Preferably, a compression roller is horizontally arranged above the cleaning member in the mounting frame, and the compression roller is in contact with the inner surface of the driving belt.

[0009] Preferably, a material pushing member is arranged on the side surface of the mounting frame, the material pushing member comprises side plates arranged on the front and rear surfaces of the mounting frame, rotating rods are arranged in the two side plates, a cylindrical cam is sleeved on the rotating rod, a sliding rod is slidingly arranged in the arc-shaped groove on the circumferential surface of the cylindrical cam, and a material pushing plate for cleaning the inner surface of the driving belt is arranged on the side surface of the sliding rod.

[0010] Preferably, a driving motor is connected to one end of the rotating rod, and a limiting long rod penetrating through the sliding rod is arranged between the two side plates.

[0011] Preferably, the return scraping device further comprises a return conveyor frame, a limiting baffle is arranged on the top of the return conveyor frame, and a transmission motor for driving the movement of the conveying belt is arranged at the right end of the return conveyor frame.

[0012] Preferably, a material sweeper is arranged at the right end of the belt conveyor outside the transmission roller, the material sweeper comprises a connecting rod, a cross beam is arranged on the connecting rod, a scraping blade with a sharp end extending to the surface of the transmission belt is arranged on the cross beam, a fixing seat is arranged between the connecting rod and the belt conveyor at one end of the connecting rod, and an electric actuator is connected to the other end of the connecting rod.

[0013] Preferably, an extension member is arranged on the inner surface of the scraping blade, the extension member comprises two fixing columns fixed vertically on the inner surface of the scraping blade, a mounting ring is arranged on the fixing columns, and an extension blade is arranged on the outer surface of the mounting ring.

[0014] Preferably, a rolling brush cleaning device is arranged inside the belt conveyor and located at the left side of the air and water cleaning device, an empty section cleaning device is arranged at the left side of the rolling brush cleaning device, the rolling brush cleaning device comprises an inner shaft, a cleaning rolling brush in contact with the lower surface of the transmission belt is arranged on the inner shaft, a rotating motor is connected to the rear end of the inner shaft, side frames supporting the inner shaft are arranged at the front and rear ends of the inner shaft, and an adjusting cylinder driving the lifting of the side frames is arranged on the inner surface of the belt conveyor.

[0015] Preferably, a lifting cylinder is arranged on the inner wall of the belt conveyor, side mounting plates are arranged at the lower end of the lifting cylinder, a mounting rod is arranged between the two side mounting plates, and an inner scraping plate in contact with the inner surface of the transmission belt is arranged on the mounting rod.

[0016] Preferably, a hopper is arranged at the right end of the belt conveyor, and the right end of the return scraping device extends to the inside of the hopper.

[0017] Compared with the prior art, the present application has the following advantages:

[0018] (1) The wind and water cleaning device and the return scraping device are combined, a plurality of cleaning methods can be used to clean the surface of the transmission belt, the cleaning degree of the surface of the transmission belt is increased, the material residue on the surface of the transmission belt is reduced, the wear between the transmission belt and the transmission roller is reduced, the subsequent conveying of other materials by the transmission belt is facilitated, material mixing does not occur, the material cleaned from the surface of the transmission belt is collected, material waste and ground pollution are avoided, the use stability of the belt conveyor is increased, and the service life is prolonged.

[0019] (2) The material sweeper designed in the application can preliminarily scrape and clean the residual material on the surface of the transmission belt, and cooperate with the hopper to collect the cleaned material, expand the cleaning range of the edge of the transmission belt, and avoid the situation that the edge of the transmission belt cannot be cleaned, thereby increasing the cleaning range and comprehensiveness of the transmission belt.

[0020] (3) The application combines the rolling brush cleaning device and the empty section cleaning device to clean the inner and outer surfaces of the transmission belt at the same time, and finally clean the inner and outer surfaces of the transmission belt, thereby reducing the residual material particles on the surface, reducing the wear caused by the particles on the contact surface of the transmission belt and the transmission roller, improving the service life of the transmission belt, and improving the cleanliness of the surface of the transmission belt. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic view of the belt conveyor cleaning system of the application;

[0022] Figure 2 It is a three-dimensional structural schematic view of the wind water cleaning device in the application; Figure 1

[0023] Figure 3 It is a top view structural schematic view of the cleaning member in the application; Figure 2

[0024] Figure 4 It is a top view structural schematic view of the back stroke material scraping device in the application; Figure 1

[0025] Figure 5 It is a structural schematic view of the material pushing member in the application; Figure 2

[0026] Figure 6 It is a three-dimensional structural schematic view of the material sweeper in the application; Figure 1

[0027] Figure 7 It is a rear view structural schematic view of the extension member in the application; Figure 6

[0028] Figure 8 It is a side view structural schematic view of the rolling brush cleaning device in the application; Figure 1

[0029] Figure 9 It is a side view structural schematic view of the empty section cleaning device in the application; Figure 1

[0030] ​​​​​​​​In the figure: 100, belt conveyor; 101, transmission roller; 102, hopper; 103, transmission belt; 200, air-water cleaning device; 201, mounting frame; 202, cleaning member; 2021, water jet cleaning piece; 2022, rubber alloy cleaning plate; 2023, polyurethane cleaning plate; 2024, air knife plate; 203, compression roller; 204, material pushing member; 2041, side plate; 2042, rotating rod; 2043, driving motor; 2044, cylindrical cam; 2045, sliding rod; 2046, material pushing plate; 2047, limiting long rod; 300, return scraping device; 301, return conveyor frame; 302, material conveying belt; 303, transmission motor; 304, limiting baffle; 400, material cleaning device; 401, connecting rod; 402, electric actuator; 403, cross beam; 404, fixed seat; 405, pin shaft; 406, scraping blade; 407, extension member; 4071, fixed column; 4072, extension blade; 4073, mounting ring; 4074, limiting ring; 500, rolling brush cleaning device; 501, inner shaft; 502, cleaning rolling brush; 503, rotating motor; 504, side frame; 505, adjusting cylinder; 600, empty section cleaning device; 601, side mounting plate; 602, mounting rod; 603, inner scraping plate; 604, lifting cylinder; 700, visual detection device. DETAILED DESCRIPTION

[0031] The technical solutions of the present application will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0032] Embodiment 1

[0033] Please refer to Figure 1 - Figure 5The application provides a cleaning system for a belt conveyor, which comprises a belt conveyor 100, the belt conveyor 100 comprises top-mounted driving rollers 101, driving belts 103 are sleeved on the two driving rollers 101, the bottom of the driving belts 103 is provided with a material recycling device, the material recycling device comprises a wind-water cleaning device 200 for cleaning the bottom of the driving belts 103 and a return scraping device 300 located below the wind-water cleaning device 200, by combining the wind-water cleaning device 200 and the return scraping device 300, the driving belts 103 can be cleaned by various cleaning methods, the cleaning degree of the surface of the driving belts 103 is improved, the residual material on the surface of the driving belts 103 is reduced, the subsequent conveying of other materials on the driving belts 103 is facilitated, the material mixing does not occur, the material cleaned from the surface of the driving belts 103 is collected, the material waste and the influence on the environment caused by the material falling to the ground are avoided, the use stability of the belt conveyor 100 is improved and the service life is prolonged.

[0034] The wind-water cleaning device 200 comprises a mounting frame 201, the mounting frame 201 is internally provided with a cleaning member 202, the cleaning member 202 comprises, in sequence, a water jet flushing piece 2021, a rubber alloy cleaning plate 2022, a polyurethane cleaning plate 2023 and a wind knife plate 2024 which are internally mounted on the mounting frame 201, by utilizing the cleaning member 202, the material on the surface of the driving belts 103 can be treated by water washing, scraping cleaning and high-pressure wind blowing, the cleaning degree of the material on the surface of the driving belts 103 is improved, the water jet flushing piece 2021 comprises a water pipe and a plurality of water washing nozzles arranged on the surface of the water pipe, and the water pipe is connected with a water tank arranged on the outer side.

[0035] The return scraping device 300 comprises a material conveying belt 302 which is horizontally located below the wind-water cleaning device 200, the material conveying belt 302 is movable and convenient for conveying the material scraped from the driving belts 103.

[0036] In the embodiment, preferably, the mounting frame 201 is internally horizontally provided with a press roller 203 which is located above the cleaning member 202, the press roller 203 is in contact with the inner surface of the driving belts 103, the press roller 203 can be supported from the inside of the driving belts 103, and the cleaning member 202 will not shake when cleaning the driving belts 103.

[0037] In the embodiment, preferably, the mounting rack 201 is provided with a pushing member 204 on the side thereof, the pushing member 204 comprises side plates 2041 mounted on the front and back surfaces of the mounting rack 201, the two side plates 2041 are internally provided with rotating rods 2042, the rotating rods 2042 are sleeved with cylindrical cams 2044, the circumferential surface of the cylindrical cam 2044 is slidably provided with a sliding rod 2045 in an arc-shaped groove, the arc-shaped groove is in sliding fit with the sliding rod 2045, can rotate with the cylindrical cam 2044, can drive the sliding rod 2045 to slide in the arc-shaped groove, thereby driving the pushing plate 2046 to move forward and backward, pushing the material accumulated on the inner surface of the transmission belt 103 outward and falling on the conveying belt 302, the side of the sliding rod 2045 is provided with the pushing plate 2046 for cleaning the inner surface of the transmission belt 103, one end of the rotating rod 2042 is connected with a driving motor 2043, the two side plates 2041 are provided with a limiting long rod 2047 penetrating through the sliding rod 2045, the limiting long rod 2047 can guide and limit the sliding rod 2045, facilitating the forward and backward movement of the sliding rod 2045.

[0038] In the embodiment, preferably, the return conveying device 300 further comprises a return conveying rack 301, the return conveying rack 301 is provided with a limiting baffle 304 on the top thereof, the limiting baffle 304 can shield the material on the conveying belt 302, the right end of the return conveying rack 301 is provided with a transmission motor 303 for driving the conveying belt 302 to move.

[0039] In summary, when the belt conveyor 100 is working, the transmission belt 103 moves, when the transmission belt 103 moves to the wind-water cleaning device 200, the water jet flushing part 2021, the rubber alloy cleaning plate 2022, the polyurethane cleaning plate 2023 and the air knife plate 2024 are used to flush, scrape and high-pressure air clean the surface of the transmission belt 103 moving to this place, so that the residual material is stripped from the transmission belt 103, and at the same time the transmission belt 103 is cleaned, the press roller 203 supports the inner surface of the transmission belt 103, so that when the outer surface of the transmission belt 103 is cleaned, there is no shaking condition, which is convenient for always contacting the surface of the transmission belt 103 for cleaning, at the same time, the driving motor 2043 works, drives the rotating rod 2042 and the cylindrical cam 2044 to rotate, the arc-shaped groove on the cylindrical cam 2044 rotates, the arc-shaped groove and the sliding rod 2045 slide together, the sliding rod 2045 moves along the arc-shaped groove along the limiting long rod 2047, drives the pushing plate 2046 to move forward and backward to the inner surface of the transmission belt 103, pushes the material remaining in the inner surface of the transmission belt 103 forward and backward to fall on the conveying belt 302, which is convenient for subsequent recycling, and the cleaned material falls on the conveying belt 302, the transmission motor 303 drives the rotating roller in the return conveyor frame 301 to rotate, the rotating roller drives the conveying belt 302 to move, the material on the conveying belt 302 is conveyed to the right, until it is sent into the hopper 102, in the whole process, the surface of the transmission belt 103 is cleaned, the cleaning degree is increased, and the cleaned material can be collected, avoiding waste of material, and the material cleaner 400, the roller brush cleaning device 500 and the empty section cleaning device 600 behind can reduce material adhesion, thereby avoiding material abrasion between the transmission belt 103 and the transmission roller 101, and improving the service life.

[0040] Example 2

[0041] Referring to Figure 6 and Figure 7 , the second embodiment of the present application.

[0042] In the embodiment, preferably, the right end of the belt conveyor 100 is provided with the material sweeper 400 located outside the transmission roller 101. By providing the material sweeper 400, the material remaining on the surface of the transmission belt 103 can be preliminarily scraped and cleaned, and the cleaned material can be collected in cooperation with the hopper 102, while the cleaning range of the edge of the transmission belt 103 is expanded, so that the edge of the transmission belt 103 cannot be cleaned. The cleaning range of the transmission belt 103 is increased and comprehensive, the material sweeper 400 comprises a connecting rod 401, the connecting rod 401 is sleeved with a cross beam 403, the cross beam 403 is provided with a scraping blade 406 extending to the surface of the transmission belt 103, and the scraping blade 406 and the cross beam 403 are provided with a pin shaft 405, the connecting rod 401 is provided with a fixed seat 404 between one end and the belt conveyor 100, and the other end of the connecting rod 401 is connected with an electric actuator 402, so as to facilitate the change of the angle of the scraping blade 406 and the adhesion of the tip of the scraping blade 406 to the surface of the transmission belt 103.

[0043] In the embodiment, preferably, the inner surface of the scraping blade 406 is provided with an extension member 407. By using the extension member 407, the edge of the transmission belt 103 that cannot be reached by the scraping blade 406 can be further cleaned by using the extension blade 4072 without affecting the cleaning of the surface of the transmission belt 103 by the scraping blade 406. The extension member 407 comprises two fixed columns 4071 fixed vertically on the inner surface of the scraping blade 406, two limiting rings 4074 located on both sides of the mounting ring 4073 are screwed on the fixed columns 4071, the mounting ring 4073 is sleeved on the fixed columns 4071, the outer surface of the mounting ring 4073 is provided with the extension blade 4072, the tip of the extension blade 4072 contacts the surface of the transmission belt 103, and the angle between the extension blade 4072 and the vertical direction is adjustable, so as to facilitate the change of the position of the outer end of the extension blade 4072 extending to the edge of the transmission belt 103.

[0044] In use, the angle of the two extension blades 4072 can be adjusted according to the width of the transmission belt 103, thereby changing the position of the outer end of the extension blade 4072, rotating the mounting ring 4073 around the fixed column 4071, and rotating the two limiting rings 4074 when the angle of the extension blade 4072 is appropriate, so that the limiting ring 4074 contacts the mounting ring 4073, and the angle of the mounting ring 4073 and the extension blade 4072 is limited and fixed by frictional resistance. The electric actuator 402 drives the connecting rod 401 to deflect, changes the angle of the scraping blade 406, and the tip of the scraping blade 406 is in contact with the outer surface of the transmission belt 103. At the same time, the tip of the extension blade 4072 contacts the outer surface of the transmission belt 103. As the transmission belt 103 moves, the material is scraped off by the scraping blade 406 and falls into the hopper 102 along the curved surface of the scraping blade 406. At the same time, the edge of the transmission belt 103 that is not touched can be scraped by the extension blade 4072, and the scraped material falls into the hopper 102 along the inclined extension blade 4072, thereby expanding the cleaning range of the transmission belt 103 and increasing the convenience of material cleaning.

[0045] Embodiment 3

[0046] Referring to Figure 8 and Figure 9 , the third embodiment of the present application.

[0047] In this embodiment, preferably, the belt conveyor 100 is internally provided with a roller brush cleaning device 500 located on the left side of the air and water cleaning device 200. The roller brush cleaning device 500 is provided with an empty section cleaning device 600 on the left side. The roller brush cleaning device 500 includes an inner shaft 501, a cleaning roller brush 502 sleeved on the inner shaft 501 and in contact with the lower surface of the transmission belt 103, the cleaning roller brush 502 can contact the outer surface of the transmission belt 103, a rotary motor 503 connected to the rear end of the inner shaft 501, side frames 504 supporting the inner shaft 501 at the front and rear ends, and an adjusting cylinder 505 provided on the inner surface of the belt conveyor 100 to drive the side frames 504 to ascend and descend. The height of the side frames 504 and the cleaning roller brush 502 can be changed by the adjusting cylinder 505, thereby facilitating the contact with the surface of the transmission belt 103.

[0048] In this embodiment, preferably, the inner surface of the transmission belt 103 is further provided with a visual detection device 700, which can detect the contact degree of the cleaning roller brush 502 with the transmission belt 103. After the cleaning roller brush 502 is worn out, the contact degree of the cleaning roller brush 502 with the transmission belt 103 is adjusted by the adjusting cylinder 505.

[0049] In the embodiment, preferably, the inner wall of the belt conveyor 100 is provided with a lifting cylinder 604, which can change the height of the inner scraper 603, facilitate the inner scraper 603 to contact the inner surface of the transmission belt 103, and the lower end of the lifting cylinder 604 is provided with a side mounting plate 601, two side mounting plates 601 are provided with a mounting rod 602, the mounting rod 602 is sleeved with the inner scraper 603 which contacts the inner surface of the transmission belt 103, and the inner scraper 603 is located on the inner side of the transmission belt 103, which facilitates the contact cleaning of the inner surface of the transmission belt 103.

[0050] In the embodiment, preferably, the right end of the belt conveyor 100 is provided with a hopper 102, and the right end of the return stroke scraping device 300 extends to the inside of the hopper 102, which facilitates the collection of the cleaned material in the hopper 102, avoids the waste of the material directly falling to the ground, and facilitates recycling.

[0051] In summary, in use, according to the thickness and slackness of the transmission belt 103, the lifting cylinder 604 and the adjusting cylinder 505 can work, which respectively change the height of the inner scraper 603 and the cleaning roller brush 502, facilitate the contact of the two with the inner and outer surfaces of the transmission belt 103, when the transmission belt 103 moves to the roller brush cleaning device 500 and the empty section cleaning device 600, the rotating motor 503 drives the cleaning roller brush 502 to rotate, the cleaning roller brush 502 continuously rubs the outer surface of the transmission belt 103, and after the outer surface cleaning is completed, the transmission belt 103 continues to move, the lower tip of the inner scraper 603 contacts the inner surface of the transmission belt 103, and as the transmission belt 103 moves, the particles adhered to the inner surface of the transmission belt 103 can be scraped and accumulated on one side of the inner scraper 603, and after cleaning, the transmission belt 103 cooperates with the transmission roller 101 to reduce the wear of the contact surface caused by the particles, improve the service life of the transmission belt 103, and improve the cleanliness of the surface of the transmission belt 103.

[0052] Embodiment 4

[0053] The embodiment is obtained by combining embodiment 1, embodiment 2 and embodiment 3.

[0054] In use, as the belt conveyor 100 works, the transmission belt 103 moves, first, the material sweeper 400 is used to scrape the material remaining on the surface of the transmission belt 103 and fall into the hopper 102 for collection, and the preliminarily cleaned transmission belt 103 moves to the air-water cleaning device 200 for more comprehensive cleaning, and the material on the inner surface of the transmission belt 103 is pushed back and forth by the pushing member 204 to fall into the hopper 102, and the material cleaned by the air-water cleaning device 200 falls on the return scraping device 300 and is moved to the hopper 102 for recycling, finally, the roller brush cleaning device 500 and the empty section cleaning device 600 are used again to clean the inner and outer surfaces of the transmission belt 103 for the last time, so as to keep the transmission belt 103 clean and facilitate the transmission belt 103 to continue to convey the material next time, and the automatic control of all the equipment takes the intelligent PLC control box as the control core to realize the interlocking start and stop with the transmission belt 103.

[0055] The above examples are only used to illustrate the technical method of the present application and not to limit it, although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical method of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical method of the present application.

Claims

1. A cleaning system for a belt conveyor, characterized in that, The system includes a belt conveyor (100), which includes a top-mounted drive roller (101) and a drive belt (103) fitted onto the two drive rollers (101). The bottom of the drive belt (103) is provided with a material recovery device, which includes a wind and water cleaning device (200) for cleaning the bottom of the drive belt (103) and a return scraper device (300) located below the wind and water cleaning device (200). The air-water cleaning device (200) includes a mounting frame (201), and a cleaning component (202) is provided inside the mounting frame (201). The cleaning component (202) includes a water jet flushing component (2021), a rubber alloy cleaning plate (2022), a polyurethane cleaning plate (2023), and an air blade plate (2024) installed sequentially inside the mounting frame (201). The return scraper (300) includes a conveyor belt (302) located horizontally below the wind and water cleaning device (200); The mounting frame (201) is provided with a pusher component (204) on its side. The pusher component (204) includes a side plate (2041) installed on the front and rear surfaces of the mounting frame (201). A rotating rod (2042) is provided inside the two side plates (2041). A cylindrical cam (2044) is sleeved on the rotating rod (2042). A sliding rod (2045) is slidably arranged in the arc groove on the circumferential surface of the cylindrical cam (2044). A pusher plate (2046) for cleaning the inner surface of the transmission belt (103) is provided on the side of the sliding rod (2045). One end of the rotating rod (2042) is connected to a drive motor (2043), and a limiting rod (2047) that passes through the sliding rod (2045) is provided between the two side plates (2041).

2. A cleaning system for a belt conveyor according to claim 1, characterized in that, The mounting bracket (201) has a horizontally arranged pressure roller (203) located above the cleaning component (202), and the pressure roller (203) is in contact with the inner surface of the transmission belt (103).

3. A cleaning system for a belt conveyor according to claim 1, characterized in that, The return scraping device (300) also includes a return conveyor frame (301), the top of which is provided with a limit baffle (304), and the right end of the return conveyor frame (301) is provided with a drive motor (303) for driving the conveyor belt (302) to move.

4. A cleaning system for a belt conveyor according to claim 1, characterized in that, The right end of the belt conveyor (100) is provided with a material cleaner (400) located outside the drive roller (101). The material cleaner (400) includes a connecting rod (401), a crossbeam (403) is sleeved on the connecting rod (401), and a scraper blade (406) with its tip extending to the surface of the drive belt (103) is provided on the crossbeam (403). A fixed seat (404) is provided between one end of the connecting rod (401) and the belt conveyor (100), and an electric actuator (402) is connected to the other end of the connecting rod (401).

5. A cleaning system for a belt conveyor according to claim 4, characterized in that, The inner surface of the scraper blade (406) is provided with an extension member (407). The extension member (407) includes two fixing posts (4071) that are vertically fixed to the inner surface of the scraper blade (406). An installation ring (4073) is sleeved on the fixing post (4071). An extension blade (4072) is provided on the outer surface of the installation ring (4073).

6. A cleaning system for a belt conveyor according to claim 1, characterized in that, The belt conveyor (100) is equipped with a roller brush cleaning device (500) located to the left of the air-water cleaning device (200). A gap cleaning device (600) is provided to the left of the roller brush cleaning device (500). The roller brush cleaning device (500) includes an inner shaft (501). A cleaning roller brush (502) that contacts the lower surface of the transmission belt (103) is sleeved on the inner shaft (501). A rotary motor (503) is connected to the rear end of the inner shaft (501). Side frames (504) that support the inner shaft (501) are provided at the front and rear ends of the inner shaft (501). An adjusting cylinder (505) that drives the side frames (504) to lift and lower is provided on the inner surface of the belt conveyor (100).

7. A cleaning system for a belt conveyor according to claim 6, characterized in that, The inner wall of the belt conveyor (100) is provided with a lifting cylinder (604), and a side mounting plate (601) is provided at the lower end of the lifting cylinder (604). A mounting rod (602) is provided between the two side mounting plates (601), and an inner scraper (603) that contacts the inner surface of the transmission belt (103) is sleeved on the mounting rod (602).

8. A cleaning system for a belt conveyor according to claim 1, characterized in that, The belt conveyor (100) is provided with a hopper (102) at its right end, and the return scraper (300) extends to the inside of the hopper (102) at its right end.

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