A cleaning device for a conveyor belt

Abstract

The application provides a belt cleaning device for cleaning a belt, comprising a nozzle, a first pipeline and a second pipeline, the first pipeline is connected with the nozzle and used for supplying liquid to the nozzle, the second pipeline is connected with the nozzle and used for supplying gas to the nozzle, and an adjusting valve is connected with the nozzle and capable of adjusting the connection opening between the first pipeline and the second pipeline and the nozzle, so as to adjust the gas-liquid ratio in the gas-liquid mixture sprayed by the nozzle. Compared with the mode of spraying liquid by the nozzle to clean the belt, the gas-liquid mixture sprayed by the nozzle can efficiently clean the material adhered to the belt, and the gas-liquid mixture mode can reduce the water consumption and the load of subsequent sewage environmental protection equipment. The adjusting valve can adjust the connection opening between the first pipeline and the second pipeline and the nozzle, so as to adjust the gas-liquid ratio in the gas-liquid mixture sprayed by the nozzle, thereby adjusting the gas-liquid ratio in the gas-liquid mixture and improving the cleaning effect of the adhered sundries on the belt.

Description

Technical Field

[0001] This application relates to the field of cleaning technology, specifically to a cleaning device for conveyor belts. Background Technology

[0002] Belt conveyors are widely used in the field of material conveying. When belt conveyors transport materials containing a small amount of moisture or highly adhesive materials, the materials are easy to stick to the surface of the belt. If they are not cleaned in time or properly, the materials will scatter during the belt rotation or vibration, resulting in a dirty and messy production environment.

[0003] Therefore, how to clean the material adhering to the belt of a belt conveyor is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, this application provides a conveyor belt cleaning device for cleaning the belt, which at least solves the problem of environmental dirt caused by materials adhering to the belt.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A conveyor belt cleaning device for cleaning conveyor belts, comprising:

[0007] spray nozzle;

[0008] The first pipeline is connected to the nozzle and is used to supply liquid to the nozzle;

[0009] The second pipeline is connected to the nozzle and is used to supply air to the nozzle;

[0010] A regulating valve is connected to the nozzle and can adjust the connection opening between the first pipeline and the second pipeline and the nozzle to adjust the gas-liquid ratio in the gas-liquid mixture sprayed by the nozzle.

[0011] Optionally, the conveyor belt cleaning device includes a collection trough for collecting the items to be cleaned on the belt, the bottom of the collection trough being a first tapering portion, and the cross-sectional area of ​​the first tapering portion decreasing in the direction of gravity.

[0012] Optionally, the conveyor belt cleaning device further includes a discharge pipe connected to the constricted end of the first tapered section, and a shut-off valve is provided in the discharge pipe.

[0013] Optionally, the portion of the discharge pipe near the first tapered section is a second tapered section, and the flared end of the second tapered section is connected to the constricted end of the first tapered section.

[0014] Optionally, multiple nozzles are evenly arranged in the width direction of the belt, and each nozzle is connected to the first pipeline and the second pipeline, and the regulating valve is set one-to-one with the nozzle.

[0015] Optionally, the conveyor belt cleaning device further includes:

[0016] The inlet pipe is connected to multiple first pipelines, and a first shut-off valve is provided in the inlet pipe;

[0017] The intake pipe is connected to multiple second pipes, and a second shut-off valve is provided in the intake pipe.

[0018] Optionally, the angle between the gas-liquid mixture ejected by the nozzle and the plane where the belt is located is α, where α satisfies: 30°≤α≤60°.

[0019] Optionally, the conveyor belt cleaning device further includes a rotating component connected to the nozzle, the rotating component being able to adjust the angle between the gas-liquid mixture ejected from the nozzle and the belt.

[0020] Optionally, the conveyor belt cleaning device further includes a controller, which is electrically connected to the regulating valve and the rotating component respectively. The controller can control the opening degree of the regulating valve and the rotation of the rotating component.

[0021] Optionally, at least one of the liquid inlet pipe and the air inlet pipe is provided with a third pipe facing the bottom or wall of the collection tank, the third pipe being used to blow the material to be cleaned toward the discharge pipe.

[0022] The conveyor belt cleaning device provided in this application, by setting a first pipeline for supplying liquid to the nozzle and a second pipeline for supplying air to the nozzle, enables the nozzle to spray a gas-liquid mixture onto the belt. The gas-liquid mixture can efficiently clean the material adhering to the belt, thereby preventing the material adhering to the belt from scattering on the belt and thus preventing the material adhering to the belt from falling off and polluting the production environment.

[0023] Secondly, compared to the method of cleaning belts by spraying liquid from nozzles, the gas-liquid mixture sprayed from nozzles can efficiently clean materials adhering to the belts; moreover, the gas-liquid mixture method can reduce water consumption, thus saving water and reducing the load on subsequent wastewater treatment equipment.

[0024] Finally, the conveyor belt cleaning device of this application also includes a regulating valve, which can adjust the connection opening between the first pipeline and the second pipeline and the nozzle to adjust the gas-liquid ratio in the gas-liquid mixture sprayed by the nozzle. This allows the gas-liquid ratio in the gas-liquid mixture to be adjusted according to the different types of materials adhering to the belt, thereby improving the cleaning effect on the debris adhering to the belt. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 Schematic diagram of the conveyor belt cleaning device provided in this embodiment Figure 1 ;

[0027] Figure 2 Schematic diagram of a conveyor belt cleaning device Figure 2 .

[0028] exist Figure 1 and Figure 2 middle:

[0029] 1- Nozzle, 2- First pipeline, 3- Second pipeline, 4- Regulating valve, 5- Collection tank, 6- Discharge pipe, 7- Second shut-off valve, 8- Liquid inlet pipe, 9- Air inlet pipe, 10- Third pipeline, 11- Belt, 12- First shut-off valve; 501- First tapered section, 601- Second tapered section. Detailed Implementation

[0030] This application provides a conveyor belt cleaning device for cleaning the belt, which at least solves the problem of environmental dirt caused by materials adhering to the belt.

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] like Figure 1 and Figure 2As shown, this application embodiment provides a conveyor belt cleaning device for cleaning the belt 11 of a belt conveyor to remove material adhering to the belt 11. The conveyor belt cleaning device mainly includes a nozzle 1, a first pipe 2, a second pipe 3, and a regulating valve 4. The first pipe 2 is connected to the nozzle 1 and is used to supply liquid to the nozzle 1; the second pipe 3 is connected to the nozzle 1 and is used to supply air to the nozzle 1. Specifically, the nozzle 1 is internally equipped with a three-way connector (not shown in the figure). The first connector of the three-way connector is connected to the first pipe 2, the second connector of the three-way connector is connected to the second pipe 3, and the third connector of the three-way connector is connected to the spray end of the nozzle 1. This allows the nozzle 1 to simultaneously receive liquid from the first pipe 2 and gas from the second pipe 3, enabling the nozzle 1 to spray a gas-liquid mixture.

[0033] The regulating valve 4 is connected to the nozzle 1 and can adjust the connection opening between the first pipe 2 and the second pipe 3 and the nozzle 1 to adjust the gas-liquid ratio in the gas-liquid mixture sprayed by the nozzle 1. For example, the regulating valve 4 can be a ball valve, which is located in the tee port between the nozzle 1, the first pipe 2, and the second pipe 3. The ball valve can adjust the connection opening between the first pipe 2 and the nozzle 1, and also adjust the connection opening between the second pipe 3 and the nozzle 1. This allows adjustment of the liquid supply from the first pipe 2 to the nozzle 1 and the gas supply from the second pipe 3 to the nozzle 1, thereby adjusting the gas-liquid ratio of the gas-liquid mixture sprayed by the nozzle 1. The regulating valve 4 can also include two opening regulating valves. One opening regulating valve is located at the connection between the first pipeline 2 and the nozzle 1, and the other opening regulating valve is located at the connection between the second pipeline 3 and the nozzle 1. By adjusting these two opening regulating valves, the liquid supply to the first pipeline 2 and the air supply to the second pipeline 3 can be adjusted, thereby regulating the gas-liquid ratio of the gas-liquid mixture sprayed from the nozzle 1. With this configuration, when the moisture content of the material adhering to the belt 11 is high, the opening between the first pipeline 2 and the nozzle 1 is increased by the regulating valve 4 to increase the proportion of liquid in the gas-liquid mixture sprayed from the nozzle 1, thus achieving rapid and efficient cleaning of the material. When the moisture content of the material adhering to the belt 11 is low, the opening between the second pipeline 3 and the nozzle 1 is increased by the regulating valve 4 to increase the proportion of gas in the gas-liquid mixture sprayed from the nozzle 1, thus achieving efficient cleaning of the material. This achieves intelligent control of the gas-liquid ratio in the gas-liquid mixture sprayed from the nozzle 1.

[0034] It should be noted that the gas-liquid ratio in the gas-liquid mixture ejected by nozzle 1 refers to the ratio between gas and liquid in the gas-liquid mixture.

[0035] It should also be noted that by adjusting the valve, the spray from nozzle 1 can be made to be only liquid; of course, by adjusting the valve, the spray from nozzle 1 can also be made to be only gas.

[0036] The conveyor belt cleaning device described above, by providing a first pipe 2 for supplying liquid to the nozzle 1 and a second pipe 3 for supplying air to the nozzle 1, enables the nozzle 1 to spray a gas-liquid mixture onto the belt 11. This gas-liquid mixture efficiently cleans materials adhering to the belt 11, preventing them from scattering and contaminating the production environment. Furthermore, compared to cleaning the belt 11 by spraying water, the gas-liquid mixture sprayed by the nozzle 1 is more efficient at cleaning materials adhering to the belt 11. Additionally, the gas-liquid mixture method reduces water consumption, saving water and reducing the load on subsequent wastewater treatment equipment. Finally, the conveyor belt cleaning device of this application also includes a regulating valve 4. The regulating valve 4 can adjust the connection opening between the first pipeline 2 and the second pipeline 3 and the nozzle 1 to adjust the gas-liquid ratio in the gas-liquid mixture sprayed by the nozzle 1. This allows the gas-liquid ratio in the gas-liquid mixture to be adjusted according to the different types of materials adhering to the belt 11, thereby improving the cleaning effect on the debris adhering to the belt 11.

[0037] In some embodiments, please refer to Figure 1 and Figure 2 The conveyor belt cleaning device includes a collection trough 5 for collecting the materials to be cleaned on the belt 11. The collection trough 5 is designed to quickly and efficiently collect the materials being cleaned from the belt 11 and the liquid sprayed from the nozzles 1, preventing further environmental pollution. Furthermore, the bottom of the collection trough 5 is a first tapered section 501, and the cross-sectional area of ​​the first tapered section 501 decreases in the direction of gravity. Here, by setting the bottom of the collection trough 5 as a tapered structure, when the collection trough 5 collects a mixture of materials and water, the mixture will flow towards the constricted portion of the first tapered section 501 under gravity, facilitating the recycling of the mixture. By setting the first tapered section 501, the amount of material and water mixture remaining in the collection trough 5 is reduced, achieving efficient recycling of the mixture.

[0038] It should be noted that the direction of gravity refers to... Figure 2 The direction indicated by the middle arrow G.

[0039] In some embodiments, please refer to Figure 1 and Figure 2The conveyor belt cleaning device also includes a discharge pipe 6 connected to the constricted end of the first tapering section 501. By providing the discharge pipe 6, the first tapering section 501 guides the mixture of material and water in the collection tank 5 to the location of the discharge pipe 6, thereby efficiently and conveniently recovering the mixture of material and water. Furthermore, a shut-off valve (not shown in the figure) is provided in the discharge pipe 6 to periodically clean the mixture of material and water in the collection tank 5.

[0040] In some embodiments, please refer to Figure 1 and Figure 2 The discharge pipe 6 has a second tapered section 502 near the first tapered section 501, and the flared end of the second tapered section 502 is connected to the constricted end of the first tapered section 501. That is, the cross-sectional area of ​​the second tapered section 502 decreases in the direction of gravity. Thus, during the recovery of the material and water mixture, the mixture first flows from the flared end of the first tapered section 501 to the constricted end, then to the flared end of the second tapered section 502 connected to the constricted end of the first tapered section 501. The mixture then flows from the flared end of the second tapered section 502 to the constricted end of the second tapered section 502, thereby collecting the mixture through the discharge pipe 6. This arrangement reduces the amount of material and water mixture remaining in the collection tank 5 through the cooperation of the first tapered section 501 and the second tapered section 502, achieving more efficient recovery of the mixture.

[0041] In some embodiments, please refer to Figure 1 and Figure 2 Multiple nozzles 1 are evenly arranged along the width of the belt 11. By setting multiple nozzles 1, the cleaning of various positions on the belt 11 can be achieved efficiently, improving the cleaning efficiency of the belt 11. Furthermore, each nozzle 1 is connected to the first pipe 2 and the second pipe 3. The regulating valve 4 is set one-to-one with the nozzle 1, that is, the gas-liquid ratio in the gas-liquid mixture sprayed by each nozzle 1 can be adjusted individually. This allows the gas-liquid ratio of the gas-liquid mixture sprayed by the corresponding nozzle 1 to be adjusted according to the amount of material adhering to different positions along the width of the belt 11, thereby achieving more efficient cleaning of the material adhering to the belt 11.

[0042] It should be noted that the width direction of belt 11 is... Figure 2 The direction indicated by the double-headed arrow X.

[0043] In some embodiments, please refer to Figure 1 and Figure 2The conveyor belt cleaning device also includes a liquid inlet pipe 8 and an air inlet pipe 9. The liquid inlet pipe 8 is connected to multiple first pipes 2, and is used to supply liquid to multiple nozzles 1 through the multiple first pipes 2 respectively. Furthermore, a first shut-off valve 12 is installed in the liquid inlet pipe 8, so that when the conveyor belt cleaning device completes cleaning the belt, closing the first shut-off valve 12 can cut off the liquid supply to the conveyor belt cleaning device, thus conveniently opening and closing the liquid supply channel of the cleaning device. The air inlet pipe 9 is connected to multiple second pipes 3, and the liquid inlet pipe 8 is used to supply air to multiple nozzles 1 through the multiple second pipes 3 respectively. Furthermore, a second shut-off valve 7 is installed in the air inlet pipe 9, so that when the conveyor belt cleaning device completes cleaning the belt, closing the second shut-off valve 7 can cut off the gas supply to the conveyor belt cleaning device, thus conveniently opening and closing the air supply channel of the cleaning device.

[0044] In some embodiments, please refer to Figure 1 and Figure 2 The angle between the gas-liquid mixture ejected from nozzle 1 and the plane containing belt 11 is α, where α satisfies: 30°≤α≤60°. By ensuring the angle between the gas-liquid mixture ejected from nozzle 1 and the plane containing belt 11 is within this range, it avoids two problems: firstly, an angle that is too small would result in insufficient impact force on the material adhering to belt 11, leading to low cleaning efficiency; secondly, an angle that is too large would prevent the cleaned material from easily adhering to nozzle 1 and causing clogging. This design improves the cleaning effect of nozzle 1 while preventing clogging.

[0045] For example, the angle between the gas-liquid mixture ejected by the nozzle 1 and the plane where the belt 11 is located can be 30°, 35°, 40°, 45°, 50°, 55°, 60°, etc.

[0046] Furthermore, the angle between the gas-liquid mixture ejected from the nozzle 1 and the plane where the belt 11 is located may not be within the above range, that is, the angle may be α < 30° or 60° < α.

[0047] In some embodiments, please refer to Figure 1 and Figure 2The conveyor belt cleaning device also includes a rotating component (not shown in the figure) connected to the nozzle 1. This rotating component can adjust the angle between the gas-liquid mixture sprayed from the nozzle 1 and the belt 11. By setting the rotating component, the spray angle of the gas-liquid mixture sprayed from the nozzle 1 can be easily adjusted to clean different types of materials adhering to different types of belts 11, thereby improving the cleaning efficiency of the materials on the belt 11. Furthermore, during the cleaning process of the nozzle 1 on the materials adhering to the belt 11, the rotating component can continuously rotate the cleaning device, and the rotating nozzle 1 can spray the gas-liquid mixture onto the belt at different angles. This further enhances the cleaning effect on the materials adhering to the belt 11, further improving the cleaning efficiency.

[0048] Furthermore, the angle of the nozzle 1 can be rotated by the rotating component so that the gas-liquid mixture sprayed by the nozzle 1 is directed toward the bottom or wall of the collection tank 5. In this way, the gas-liquid mixture sprayed by the nozzle 1 can blow the material adhering to the bottom or wall of the tank toward the discharge pipe 6 connected to the bottom of the tank, thereby avoiding material residue on the wall or bottom of the collection tank 5 and thus improving the material collection efficiency.

[0049] Furthermore, a connecting rod (not shown in the figure) capable of connecting multiple nozzles 1 is provided. A rotating component is connected to the connecting rod, and the rotating component drives the connecting rod to rotate, thereby causing the nozzles 1 to rotate and the gas-liquid mixture ejected from the nozzles 1 to be sprayed out from different angles. This arrangement enables multiple nozzles 1 to rotate synchronously, improving the rotation efficiency of the nozzles 1 and the cleaning efficiency of the materials on the belt 11.

[0050] In some embodiments, please refer to Figure 1 and Figure 2 The conveyor belt cleaning device also includes a controller (not shown in the figure). The controller is electrically connected to the regulating valve 4 and the rotating component, respectively. The controller can control the opening degree of the regulating valve 4 and the rotation of the rotating component. By setting the controller, the regulating valve 4 and the rotating component can be remotely controlled. This allows for efficient adjustment of the gas-liquid ratio in the gas-liquid mixture sprayed from the nozzle 1, as well as the angle of the gas-liquid mixture sprayed from the nozzle 1, improving the automation level of nozzle 1 control. Furthermore, the gas-liquid ratio and spray angle of the gas-liquid mixture sprayed from the nozzle 1 can be adjusted in real time according to the type of material adhering to the belt 11, improving the convenience of nozzle 1 angle adjustment while enhancing the cleaning efficiency of the material adhering to the belt 11.

[0051] In some embodiments, please refer to Figure 1 and Figure 2At least one of the liquid inlet pipe 8 and the air inlet pipe 9 is provided with a third pipe 10 facing the bottom or wall of the collection tank 5. The third pipe 10 is used to blow the material to be cleaned toward the discharge pipe 6, where the material to be cleaned refers to the material adhering to the belt 11. Since the collection tank 5 contains a mixture of material and water, and the belt 11 is usually used to transport sand and gravel, when the collection tank 5 contains a mixture of sand and gravel and water, due to the large weight of the sand and gravel, the sand and gravel are easy to settle at the bottom of the collection tank 5 and are not easy to be discharged from the discharge pipe 6. Of course, material may also adhere to the wall of the collection tank 5. By setting up the aforementioned third pipe 10, which is connected to the liquid inlet pipe 8 and / or the air inlet pipe 9, when the material settles at the bottom of the collection tank 5 or adheres to the tank wall, high-pressure air or high-pressure water is blown through the third pipe 10 to the bottom or tank wall of the collection tank 5 to discharge the material from the discharge pipe 6, thereby reducing or even avoiding the deposition of material at the bottom or tank wall of the collection tank 5, and thus improving the collection efficiency of the material in the collection tank 5.

[0052] The above embodiments include the following three implementation methods: a third pipe 10 is provided in the liquid inlet pipe 8 facing the bottom or wall of the collection tank 5; a third pipe 10 is provided in the air inlet pipe 9 facing the bottom or wall of the collection tank 5; and a third pipe 10 is provided in both the liquid inlet pipe 8 and the air inlet pipe 9.

[0053] Furthermore, an on / off valve is installed on the third pipeline 10 to open the on / off valve when it is necessary to clean the material at the bottom of the collection tank 5, and to close the on / off valve when it is not necessary to clean the material at the bottom of the collection tank 5.

[0054] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0055] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0056] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0057] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0058] It should be understood that the qualifiers “first,” “second,” “third,” “fourth,” “fifth,” and “sixth” used in the description of the embodiments of this application are only used to more clearly illustrate the technical solutions and are not intended to limit the scope of protection of this application.

[0059] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A cleaning device for a conveyor belt, characterized in that For cleaning belts, including: spray nozzle; The first pipeline is connected to the nozzle and is used to supply liquid to the nozzle; The second pipeline is connected to the nozzle and is used to supply air to the nozzle; A regulating valve is connected to the nozzle and can adjust the connection opening between the first pipeline and the second pipeline and the nozzle to adjust the gas-liquid ratio in the gas-liquid mixture sprayed by the nozzle.

2. The cleaning device of the conveyor belt according to claim 1, characterized in that, It includes a collection trough for collecting items to be cleaned on the belt, the bottom of the collection trough being a first tapering section, and the cross-sectional area of ​​the first tapering section decreasing in the direction of gravity.

3. The conveyor belt cleaning device according to claim 2, characterized in that, It also includes a discharge pipe connected to the constricted end of the first tapered section, and a shut-off valve is provided in the discharge pipe.

4. The conveyor belt cleaning device according to claim 3, characterized in that, The portion of the discharge pipe near the first tapered section is the second tapered section, and the flared end of the second tapered section is connected to the constricted end of the first tapered section.

5. The conveyor belt cleaning device according to claim 3, characterized in that, Multiple nozzles are evenly arranged along the width of the belt, and each nozzle is connected to the first pipeline and the second pipeline. The regulating valve is configured one-to-one with each nozzle.

6. The conveyor belt cleaning device according to claim 5, characterized in that, The conveyor belt cleaning device also includes: The inlet pipe is connected to multiple first pipelines, and a first shut-off valve is provided in the inlet pipe; The intake pipe is connected to multiple second pipes, and a second shut-off valve is provided in the intake pipe.

7. The conveyor belt cleaning device according to claim 1, characterized in that, The angle between the gas-liquid mixture ejected by the nozzle and the plane where the belt is located is α, where α satisfies: 30°≤α≤60°.

8. The conveyor belt cleaning device according to claim 1 or 7, characterized in that, It also includes a rotating component connected to the nozzle, which can adjust the angle between the gas-liquid mixture ejected from the nozzle and the belt.

9. The conveyor belt cleaning device according to claim 8, characterized in that, It also includes a controller, which is electrically connected to the regulating valve and the rotating component respectively. The controller is capable of controlling the opening degree of the regulating valve and the rotation of the rotating component.

10. The conveyor belt cleaning device according to claim 6, characterized in that, At least one of the liquid inlet pipe and the air inlet pipe is provided with a third pipe facing the bottom or wall of the collection tank, and the third pipe is used to blow the material to be cleaned toward the discharge pipe.

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