A belt conveyor cleaning device

Abstract

The present invention relates to a cleaning device for a belt conveyor, which comprises: a roller mechanism including a first roller frame and a first roller, the first roller frame is arranged along the length direction of the conveyor belt, and the first roller is rotatably installed on the first roller frame and located below the conveyor belt; a pressure roller mechanism including a pressure roller frame and a pressure roller, the pressure roller frame is oppositely arranged above the first roller frame, and the pressure roller is rotatably installed at the front end of the pressure roller frame and located above the conveyor belt; a power mechanism including a driving member and a transfer transmission member, the driving member is in transmission connection with the pressure roller frame to drive the front end of the pressure roller frame to move downward, so that the pressure roller flattens the conveyor belt, and the transfer transmission member is connected between the pressure roller frame and the first roller frame to drive the rear end of the first roller frame to move upward when the pressure roller moves downward. The cleaning device for the belt conveyor can quickly remove the accumulated water on the conveyor belt, and the device is in rolling contact with the conveyor belt, which can effectively reduce the damage degree of the conveyor belt surface and improve the service life of the conveyor belt.

Description

Technical Field

[0001] The present invention relates to the technical field of belt conveyors, and particularly to a cleaning device for a belt conveyor. Background Art

[0002] A troughed conveyor belt is often used in a belt conveyor to convey materials. Since there are often some parts of the belt conveyor arranged outdoors, a large amount of rainwater will accumulate on the conveyor belt in the loading section when it rains.

[0003] Currently, a wiper is often used to remove the accumulated water on the conveyor belt to ensure the normal conveyance of materials. However, since the wiper mostly uses a rubber baffle to scrape off the accumulated water, a sufficient fixed friction needs to be maintained between the rubber baffle and the conveyor belt to obtain a good cleaning effect. Therefore, when the wiper is used for a long time, the surface of the conveyor belt will be damaged more seriously, reducing the service life of the conveyor belt and affecting the normal conveyance of materials. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that using a wiper to clean the accumulated water on the conveyor belt in the prior art will cause more serious damage to the surface of the conveyor belt, thereby providing a cleaning device for a belt conveyor.

[0005] To solve the above problems, the present invention provides a cleaning device for a belt conveyor, which includes a roller mechanism, a pressure roller mechanism and a power mechanism. Among them, the roller mechanism includes a first roller frame and a first roller. The first roller frame is arranged along the length direction of the conveyor belt of the belt conveyor. The first roller is rotatably installed on the first roller frame and is arranged below the conveyor belt. The pressure roller mechanism includes a pressure roller frame and a pressure roller. The pressure roller frame is oppositely arranged above the first roller frame. The pressure roller is rotatably installed at the front end of the pressure roller frame and is arranged above the conveyor belt. The power mechanism includes a driving member and a transfer transmission member. The driving member is in transmission connection with the pressure roller frame to drive the front end of the pressure roller frame to move downward, so that the pressure roller flattens the conveyor belt. The transfer transmission member is connected between the pressure roller frame and the first roller frame to drive the rear end of the first roller frame to move upward when the pressure roller moves downward.

[0006] Optionally, the roller mechanism further includes: a second roller frame, fixedly arranged in front of the first roller frame; a second roller, rotatably installed on the second roller frame and arranged below the conveyor belt.

[0007] Optionally, the pressure roller is set as a comb-shaped roller. The comb-shaped roller is arranged along the width direction of the conveyor belt, and the axial length of the pressure roller is greater than the width of the conveyor belt when it is flattened.

[0008] Optionally, the power mechanism further includes a base frame; the transfer transmission member is arranged as an angular connecting rod, the middle part of the angular connecting rod is hinged to the base frame, the front end of the angular connecting rod is fixedly connected to the pressure roller frame, a chute is arranged at the rear end of the angular connecting rod, a pin shaft is fixedly installed at the rear end of the first idler roller frame, and the chute is slidably sleeved outside the pin shaft.

[0009] Optionally, the driving member is arranged as an electric push rod, one end of the electric push rod is hinged to the base frame, and the other end is hinged to the front end of the pressure roller frame.

[0010] Optionally, the idler roller mechanism further includes: a first leg, supported below the front end of the first idler roller frame, the first leg includes a first leg body, a sliding member and a first swing rod, the sliding member is slidably connected to the first leg body in the front-rear direction, the lower end of the first swing rod is hinged to the sliding member, and the upper end of the first swing rod is fixedly connected to the first idler roller frame; a second leg, supported below the rear end of the first idler roller frame, the second leg includes a second leg body and a second swing rod, the lower end of the second swing rod is hinged to the second leg body, and the upper end of the second swing rod is fixedly connected to the first idler roller frame.

[0011] Optionally, the belt conveyor cleaning device further includes a purging mechanism, and the purging mechanism includes a blower and a ventilation pipeline. Wherein, the inlet end of the ventilation pipeline is communicated with the outlet end of the blower, and the outlet end of the ventilation pipeline is arranged behind the pressure roller to provide a forward-flowing cleaning air flow.

[0012] Optionally, a plurality of air outlets are formed at the outlet end of the ventilation pipeline, and the plurality of air outlets are arranged along the width direction of the conveyor belt.

[0013] Optionally, from the inlet end to the outlet end of the ventilation pipeline, the ventilation pipeline includes a main pipeline, a multi-control air valve and a plurality of branch pipelines arranged in parallel; the main pipeline is connected to the plurality of branch pipelines through the multi-control air valve, the multi-control air valve has a plurality of independently openable and closable air ducts, and the plurality of air ducts correspond to the plurality of branch pipelines one by one.

[0014] Optionally, the purging mechanism further includes a heating member, and the heating member is arranged at the outlet end of the blower to heat the cleaning air flow.

[0015] The present invention has the following advantages:

[0016] 1. Place the first idler under the conveyor belt and make it contact with the conveyor belt. The conveyor belt can be supported by the first idler. Then, drive the front end of the pressure roller frame to move downward through the driving member, and the pressure roller can be driven to move downward by the pressure roller frame, so as to flatten the conveyor belt and form a lowest point position of the conveyor belt under the pressure roller. At the same time, the rear end of the first idler frame can also be driven to move upward through the transfer transmission member, so that the rear end of the first idler frame is higher than the front end, forming a slope, so that the accumulated water on the conveyor belt can flow to the lowest point position through this slope, and then the accumulated water is discharged to the outside. During the whole process, since the belt conveyor cleaning device is in rolling contact with the conveyor belt through the pressure roller and the first idler, the damage degree of the conveyor belt surface can be effectively reduced, and the service life of the conveyor belt can be improved.

[0017] 2. The conveyor belt in front of the pressure roller can be firmly supported by the second idler frame and the second idler, ensuring that the conveyor belt in front of the pressure roller has a large inclination degree, which is more conducive to the accumulated water flowing to the lowest point position. Since the second idler is in rolling contact with the conveyor belt, the damage degree of the conveyor belt surface can also be effectively reduced, and the service life of the conveyor belt can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 Fig. shows the front view structural schematic diagram of the belt conveyor cleaning device provided by the embodiment of the present invention;

[0020] Figure 2 Fig. shows the front view structural schematic diagram of the cooperation between the belt conveyor cleaning device provided by the embodiment of the present invention and the conveyor belt and the support in the belt conveyor;

[0021] Figure 3 Fig. shows the top view structural schematic diagram of the blowing mechanism in the belt conveyor cleaning device provided by the embodiment of the present invention.

[0022] Description of the reference numerals:

[0023] 101, conveyor belt; 102, support;

[0024] 1, idler mechanism; 11, first idler frame; 111, pin shaft; 12, first idler; 13, second idler frame; 14, second idler; 15, first leg; 151, first leg body; 152, sliding member; 153, first swing rod; 16, second leg; 161, second leg body; 162, second swing rod;

[0025] 2. Pressing roller mechanism; 21. Pressing roller frame; 22. Pressing roller

[0026] 3. Power mechanism; 31. Driving part; 32. Transfer transmission part; 321. Chute; 33. Base frame; 331. Vertical brace; 332. Diagonal brace

[0027] 4. Blowing and purging mechanism; 41. Blower; 42. Ventilation pipeline; 421. Main pipeline; 422. Multi-control air valve; 423. Branch pipeline; 43. Heating part Specific embodiments

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] This embodiment provides a cleaning device for a belt conveyor, which is used to clean the conveyor belt 101 on the belt conveyor. As Figure 1 and Figure 2 shown, the cleaning device for the belt conveyor includes a carrying roller mechanism 1, a pressing roller mechanism 2, and a power mechanism 3.

[0033] Among them, the idler mechanism 1 includes a first idler bracket 11 and a first idler 12. The first idler bracket 11 is arranged along the length direction of the conveyor belt 101, and the first idler 12 is rotatably installed on the first idler bracket 11 and arranged below the conveyor belt 101; the pressure roller mechanism 2 includes a pressure roller bracket 21 and a pressure roller 22. The pressure roller bracket 21 is oppositely arranged above the first idler bracket 11, and the pressure roller 22 is rotatably installed at the front end of the pressure roller bracket 21 and arranged above the conveyor belt 101; the power mechanism 3 includes a driving member 31 and a transfer transmission member 32. The driving member 31 is in transmission connection with the pressure roller bracket 21 to drive the front end of the pressure roller bracket 21 to move downward, so that the pressure roller 22 flattens the conveyor belt 101; the transfer transmission member 32 is connected between the pressure roller bracket 21 and the first idler bracket 11 to drive the rear end of the first idler bracket 11 to move upward when the pressure roller 22 moves downward.

[0034] According to the above settings, when there is accumulated water on the conveyor belt 101 in the loading section, the first idler 12 is placed below the conveyor belt 101 and abuts against the conveyor belt 101, and the conveyor belt 101 can be supported by the first idler 12. Then, by driving the front end of the pressure roller bracket 21 to move downward through the driving member 31, the pressure roller 22 can be driven to move downward through the pressure roller bracket 21, and further the pressure roller 22 flattens the conveyor belt 101, so as to form a lowest point position of the conveyor belt 101 below the pressure roller 22. While the front end of the pressure roller bracket 21 moves downward, the rear end of the first idler bracket 11 can also be driven to move upward through the transfer transmission member 32, so that the rear end of the first idler bracket 11 is higher than the front end, forming a slope, and the accumulated water on the conveyor belt 101 flows to the lowest point position through this slope at an accelerated speed. When the accumulated water flows to the lowest point position, since the conveyor belt 101 at this position is flattened, the accumulated water can be discharged to the outside from the lowest point position.

[0035] It can be seen that the accumulated water on the conveyor belt 101 can be removed relatively quickly through this belt conveyor cleaning device. During the process of cleaning the accumulated water, since the belt conveyor cleaning device is in rolling contact with the conveyor belt 101 through the pressure roller 22 and the first idler 12, the friction between the belt conveyor cleaning device and the conveyor belt 101 is small, so the damage degree of the surface of the conveyor belt 101 can be effectively reduced, and the service life of the conveyor belt 101 can be improved.

[0036] Next, in combination with Figure 1 and Figure 2 , the settings of the idler mechanism 1, the pressure roller mechanism 2 and the power mechanism 3 will be further introduced.

[0037] For the idler mechanism 1, a plurality of first idlers 12 are arranged on the first idler bracket 11 from the front end to the rear end of the first idler bracket 11. According to this, the conveyor belt 101 can be supported by a plurality of first idlers 12 together, and the structural stability is better.

[0038] In this embodiment, the idler mechanism 1 further includes a first leg 15 and a second leg 16. Among them, the first leg 15 is supported below the front end of the first idler frame 11. The first leg 15 includes a first leg body 151, a sliding member 152 and a first swing rod 153. The sliding member 152 is slidably connected to the first leg body 151 in the front-rear direction. The lower end of the first swing rod 153 is hinged to the sliding connecting member, and the upper end of the first swing rod 153 is fixedly connected to the first idler frame 11. The second leg 16 is supported below the rear end of the first idler frame 11. The second leg 16 includes a second leg body 161 and a second swing rod 162. The lower end of the second swing rod 162 is hinged to the second leg body 161, and the upper end of the second swing rod 162 is fixedly connected to the first idler frame 11.

[0039] During the movement of the first idler frame 11 following the pressure roller frame 21, the first leg body 151 and the second leg body 161 remain stationary to play a supporting role. When the transfer transmission member 32 drives the rear end of the first idler frame 11 to move upward, both the first swing rod 153 and the second swing rod 162 will swing forward, and the sliding member 152 will move backward, so that the first idler frame 11 moves backward by a certain distance and the rear end of the first idler frame 11 moves upward, thereby causing the conveyor belt 101 to tilt.

[0040] In this embodiment, a second idler frame 13 and a second idler 14 are further provided in the idler mechanism 1. The height of the second idler frame 13 is fixed, and it is arranged in front of the first idler frame 11. The second idler 14 is rotatably installed on the second idler frame 13, and the second idler 14 is arranged below the conveyor belt 101. Accordingly, through the second idler frame 13 and the second idler 14, the conveyor belt 101 in front of the pressure roller 22 can be stably supported, ensuring that the conveyor belt 101 in front of the pressure roller 22 has a greater inclination degree, which is more conducive to the accumulated water flowing to the lowest point position. In addition, similar to the first idler 12, since the second idler 14 is in rolling contact with the conveyor belt 101, the damage degree of the surface of the conveyor belt 101 can also be effectively reduced, and the service life of the conveyor belt 101 can be improved.

[0041] In other embodiments, the conveyor belt 101 in front of the pressure roller 22 can also be stably supported by the upper idlers in the belt conveyor.

[0042] For the pressure roller mechanism 2, a pressure roller 22 is provided at the front end of the pressure roller frame 21. Accordingly, when the conveyor belt 101 is pressed down by the pressure roller 22, the pressing position can be made more concentrated.

[0043] Preferably, the pressing roller 22 is arranged as a comb-shaped roller. The comb-shaped roller is arranged along the width direction of the conveyor belt 101, and the axial length of the pressing roller 22 is greater than the width of the conveyor belt 101 when it is flattened. In this way, the pressing roller 22 can completely flatten the conveyor belt 101, and after the pressing roller 22 flattens the conveyor belt 101, drain openings can be formed through the arrangement of the comb-shaped roller, so that the accumulated water can be drained more cleanly.

[0044] For the power mechanism 3, as Figure 1 shown, it further includes a base frame 33. Specifically, the base frame 33 includes a vertical support 331 and an inclined support 332. Among them, the vertical support 331 is vertically fixed on the support 102 of the belt conveyor; the inclined support 332 is inclined between the vertical support 331 and the support 102 to enhance the stability of the overall structure.

[0045] In this embodiment, the driving member 31 is arranged as an electric push rod. One end of the electric push rod is hinged to the upper end of the vertical support 331, and the other end is hinged to the front end of the pressing roller frame 21. The transfer transmission member 32 is arranged as an angular connecting rod. The middle part of the angular connecting rod is hinged to the middle part of the vertical support 331. The front end of the angular connecting rod is fixedly connected to the pressing roller frame 21. A chute 321 is arranged at the rear end of the angular connecting rod. A pin shaft 111 is fixed at the rear end of the idler roller frame. The chute 321 is slidably sleeved outside the pin shaft 111.

[0046] Overall, when the electric push rod extends, the electric push rod can drive the front end of the pressing roller frame 21 to move downward. When the pressing roller frame 21 moves downward, the pressing roller frame 21 can drive the rear end of the idler roller frame to move upward through the cooperation between the angular connecting rod and the pin shaft 111. Conversely, when the electric push rod shortens, the electric push rod can drive the pressing roller frame 21 to reset, and the pressing roller frame 21 then drives the idler roller frame to reset through the angular connecting rod and the pin shaft 111.

[0047] In this embodiment, to further accelerate the cleaning speed of the accumulated water, a blowing mechanism 4 is further arranged in the belt conveyor cleaning device.

[0048] As Figure 3 shown, the blowing mechanism 4 includes a blower 41 and a ventilation pipeline 42. Among them, the inlet end of the ventilation pipeline 42 is communicated with the outlet end of the blower 41, and the outlet end of the ventilation pipeline 42 is arranged behind the pressing roller 22 to provide a forward flowing clean air flow.

[0049] After the pressing roller 22 moves downward, the blower 41 is turned on. Through the ventilation pipeline 42, the air blown out by the blower 41 can be guided to the rear of the pressing roller 22, and then a forward flowing clean air flow is formed. The accumulated water at the lowest point is blown by the clean air flow to accelerate the cleaning speed.

[0050] In this embodiment, a plurality of air outlets are formed at the outlet end of the ventilation pipeline 42, and the plurality of air outlets are arranged along the width direction of the conveyor belt 101. In this way, the cleaning air flow can be guided to blow to more positions of the conveyor belt 101 simultaneously through the plurality of air outlets, and the blowing is more uniform. Optionally, the included angle between the axis of the air outlet and the conveyor belt 101 is set to 60°.

[0051] Preferably, from the inlet end to the outlet end of the ventilation pipeline 42, the ventilation pipeline 42 includes a main pipeline 421, a multi-control air valve 422, and a plurality of branch pipelines 423 arranged in parallel. Among them, the main pipeline 421 is connected to the plurality of branch pipelines 423 through the multi-control air valve 422, and the multi-control air valve 422 has a plurality of independently openable and closable air ducts, and the plurality of air ducts correspond to the plurality of branch pipelines 423 one by one.

[0052] At this time, an air outlet can be formed at the outlet end of each branch pipeline 423. When the hair dryer 41 operates, the air blown out by the hair dryer 41 can flow into the branch pipeline 423 through the main pipeline 421 and the multi-control air valve 422 in sequence, and then flow out from the air outlet. Due to the setting of the multi-control air valve 422, the opening and closing of the plurality of air outlets can be independently controlled, so that the cleaning air flow blows to the place where the accumulated water is more concentrated, further improving the cleaning effect.

[0053] In this embodiment, the main pipeline 421 is a rigid pipeline, and the main pipeline 421 is soft-connected to the outlet of the hair dryer 41. There are three branch pipelines 423, and all three branch pipelines 423 are rubber hoses, which have strong deformability and can well adapt to the on-site pipe layout requirements. Corresponding to the setting of the branch pipelines 423, the multi-control air valve 422 is set as a three-control manual air valve.

[0054] Furthermore, to improve the applicability of the belt conveyor cleaning device, a heating element 43 is also provided in the blowing mechanism 4. The heating element 43 is arranged on the ventilation pipeline 42 to heat the cleaning air flow. In this way, when the belt conveyor encounters snow, the accumulated snow or ice on the conveyor belt 101 can be blown and melted by the heated cleaning air flow, improving the cleaning efficiency.

[0055] In this embodiment, the heating element 43 is set as an electric heating tube, which is arranged in the main pipeline 421 to directly heat the air blown out by the hair dryer 41.

[0056] In summary, this embodiment provides a belt conveyor cleaning device, which has at least the following advantages:

[0057] (1) It can quickly remove the accumulated water on the conveyor belt 101, and the belt conveyor cleaning device is in rolling contact with the conveyor belt 101, which can effectively reduce the damage degree of the surface of the conveyor belt 101 and improve the service life of the conveyor belt 101;

[0058] (2) The purging mechanism 4 can accelerate the cleaning speed, with high cleaning efficiency, and is suitable for cleaning both accumulated water and snow or ice, having a wide range of applicability.

[0059] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.

Claims

1. A belt conveyor cleaning device, characterized in that, Comprising: The idler mechanism (1) includes a first idler bracket (11) and a first idler (12). The first idler bracket (11) is arranged along the length direction of the conveyor belt (101) of the belt conveyor, and the first idler (12) is rotatably installed on the first idler bracket (11) and is arranged below the conveyor belt (101). The pressure roller mechanism (2) includes a pressure roller bracket (21) and a pressure roller (22). The pressure roller bracket (21) is relatively arranged above the first idler bracket (11), and the pressure roller (22) is rotatably installed at the front end of the pressure roller bracket (21) and is arranged above the conveyor belt (101). The power mechanism (3) includes a driving member (31) and a transfer transmission member (32). The driving member (31) is in transmission connection with the pressure roller bracket (21) to drive the front end of the pressure roller bracket (21) to move downward, so that the pressure roller (22) flattens the conveyor belt (101). The transfer transmission member (32) is connected between the pressure roller bracket (21) and the first idler bracket (11) to drive the rear end of the first idler bracket (11) to move upward when the pressure roller (22) moves downward. The idler mechanism (1) further includes: The first leg (15) is supported below the front end of the first idler bracket (11). The first leg (15) includes a first leg body (151), a sliding member (152) and a first swing rod (153). The sliding member (152) is slidably connected with the first leg body (151) in the front-rear direction. The lower end of the first swing rod (153) is hinged to the sliding member (152), and the upper end of the first swing rod (153) is fixedly connected to the first idler bracket (11). The second leg (16) is supported below the rear end of the first idler bracket (11). The second leg (16) includes a second leg body (161) and a second swing rod (162). The lower end of the second swing rod (162) is hinged to the second leg body (161), and the upper end of the second swing rod (162) is fixedly connected to the first idler bracket (11).

2. The belt conveyor cleaning device according to claim 1, characterized in that The idler mechanism (1) further includes: The second idler bracket (13) is fixedly arranged in front of the first idler bracket (11). The second idler (14) is rotatably installed on the second idler bracket (13) and is arranged below the conveyor belt (101).

3. The belt conveyor cleaning device according to claim 1, characterized in that, The pressure roller (22) is arranged as a comb-shaped roller. The comb-shaped roller is arranged along the width direction of the conveyor belt (101), and the axial length of the pressure roller (22) is greater than the width of the conveyor belt (101) when it is flattened.

4. The belt conveyor cleaning device according to claim 1, wherein, The power mechanism (3) further includes a base frame (33). The transfer transmission member (32) is arranged as an angular connecting rod. The middle part of the angular connecting rod is hinged to the base frame (33). The front end of the angular connecting rod is fixedly connected to the pressure roller bracket (21). A chute (321) is arranged at the rear end of the angular connecting rod. A pin shaft (111) is fixed at the rear end of the first idler bracket (11), and the chute (321) is slidably sleeved outside the pin shaft (111).

5. The belt conveyor cleaning device according to claim 4, characterized in that, The driving member (31) is provided as an electric push rod, one end of the electric push rod is hinged to the base frame (33), and the other end is hinged to the front end of the pressure roller frame (21).

6. The belt conveyor cleaning device according to any one of claims 1-5, characterized in that, The belt conveyor cleaning device further includes a purging mechanism (4), and the purging mechanism (4) includes: a blower (41); a ventilation pipeline (42), an inlet end of the ventilation pipeline (42) is communicated with an outlet end of the blower (41), and an outlet end of the ventilation pipeline (42) is arranged behind the pressure roller (22) to provide a forward flowing cleaning air flow.

7. The belt conveyor cleaning device according to claim 6, wherein, A plurality of air outlets are formed at an outlet end of the ventilation pipeline (42), and the plurality of air outlets are arranged along a width direction of the conveyor belt (101).

8. The belt conveyor cleaning device according to claim 7, characterized in that, From the inlet end to the outlet end of the ventilation pipeline (42), the ventilation pipeline (42) includes a main pipeline (421), a multi-control air valve (422) and a plurality of branch pipelines (423) arranged in parallel; the main pipeline (421) is connected to the plurality of branch pipelines (423) through the multi-control air valve (422), the multi-control air valve (422) has a plurality of independently openable and closable air ducts, and the plurality of air ducts correspond to the plurality of branch pipelines (423) one by one.

9. The belt conveyor cleaning device according to claim 6, characterized in that, The purging mechanism (4) further includes a heating member (43), and the heating member (43) is arranged at an outlet end of the blower (41) to heat the cleaning air flow.

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