Bulk material conveyor belt cleaning device based on electrostatic and negative pressure adsorption

Abstract

The utility model relates to a bulk cargo conveying belt cleaning device based on electrostatic and negative pressure adsorption, including rolling brush cleaning mechanism, electrostatic adsorption mechanism and negative pressure adsorption mechanism, rolling brush cleaning mechanism installs in one side of negative pressure adsorption mechanism, is used for carrying out the cleaning to the lower surface of conveying belt, electrostatic adsorption mechanism installs at the top of negative pressure adsorption mechanism, and negative pressure adsorption mechanism is used for cleaning electrostatic adsorption mechanism after electrostatic adsorption, the utility model has the advantages of simple structure, reasonable in design, has realized the cleaning to the lower end surface of return conveying belt while conveying belt works, will not delay conveying belt work while, has improved the cleaning effect greatly.

Description

Technical Field

[0001] This utility model relates to the field of belt conveyor technology, specifically to a cleaning device for bulk cargo conveyor belts based on electrostatic and negative pressure adsorption. Background Technology

[0002] When a conveyor belt is used for material transport, the material adhering to the surface of the return conveyor belt is usually cleaned by a scraper-type cleaning device. Commonly used cleaning devices include metal scraper-type and polyurethane scraper-type. However, after prolonged use and wear, the conveyor belt may become uneven in thickness. Since traditional metal scrapers are fixed to a U-shaped frame made of carbon steel, they cannot effectively clean the surface of the conveyor belt.

[0003] Meanwhile, since water mist is usually used to suppress dust during the unloading of bulk cargo, the bulk cargo becomes damp and easily adheres to the conveyor belt. Traditional roller brushes or scraper cleaning devices cannot effectively clean the conveyor belt, leaving a lot of residue.

[0004] Existing methods for dust removal from conveyor belts based on electrostatic adsorption fall into two categories: The first involves installing an electrostatic dust collector at the top of the conveyor belt, requiring dust removal when the belt is not in operation. However, conveyor belts in bulk material yards are generally in continuous operation, making this method unsuitable. The second method involves installing an electrostatic dust collector at the bottom of the return conveyor belt. However, conveyor belts in bulk material yards tend to accumulate a lot of debris, requiring periodic cleaning of the electrostatic adsorption plates. Existing methods for installing electrostatic dust collectors at the bottom of the return conveyor belt are only suitable for scenarios with low dust levels and are not appropriate for conveyor belts in bulk material yards. Utility Model Content

[0005] This invention provides a bulk cargo conveyor belt cleaning device based on electrostatic and negative pressure adsorption, aiming to solve the problems in the prior art.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A bulk cargo conveyor belt cleaning device based on electrostatic and negative pressure adsorption includes a roller brush cleaning mechanism, an electrostatic adsorption mechanism, and a negative pressure adsorption mechanism. The roller brush cleaning mechanism is installed on one side of the negative pressure adsorption mechanism and is used to clean the lower surface of the conveyor belt. The electrostatic adsorption mechanism is installed on top of the negative pressure adsorption mechanism and is used to clean the electrostatic adsorption mechanism after electrostatic adsorption.

[0007] The beneficial effects of this utility model are as follows: During operation, the entire equipment is placed under the conveyor belt in advance. First, the lower surface of the conveyor belt is cleaned by the roller brush cleaning mechanism. Then, the dust on the lower surface of the conveyor belt is adsorbed by the electrostatic adsorption mechanism. Finally, the electrostatic adsorption mechanism is cleaned by the negative pressure adsorption mechanism. At this time, the entire equipment needs to be moved to the outside of the conveyor belt so that the negative pressure adsorption mechanism can clean the electrostatic adsorption mechanism.

[0008] This utility model has a simple structure and reasonable design, which enables the cleaning of the lower end face of the return conveyor belt while the conveyor belt is working. It does not delay the operation of the conveyor belt and greatly improves the cleaning effect.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, it also includes a lifting mechanism, on which the negative pressure adsorption mechanism is mounted, and the lifting mechanism is used to drive the negative pressure adsorption mechanism to rise and fall; the roller brush cleaning mechanism can be flipped up and down and positioned.

[0011] The advantages of adopting the above-mentioned further solution are that it has a simple structure, reasonable design, and uses a lifting mechanism to adjust the height of the negative pressure adsorption mechanism and the height of the roller brush cleaning mechanism, so as to be applicable to conveyor belts of different heights. It has strong versatility and is easy to use.

[0012] Furthermore, the negative pressure adsorption mechanism includes a negative pressure box, an airflow unit, and a dust adsorption unit. The negative pressure box is fixedly installed on the top of the lifting mechanism, with an open top. The electrostatic adsorption mechanism is installed at the open top of the negative pressure box. The airflow unit is installed on the outer wall of the negative pressure box and is connected to the negative pressure box through an air blowing pipe. It is used to output positive ion airflow and / or negative ion airflow to purge the electrostatic adsorption mechanism. The dust adsorption unit is located outside the negative pressure box and is connected to the negative pressure box. It is used to suck out the dust inside the negative pressure box.

[0013] The beneficial effect of adopting the above-mentioned further solution is that during operation, firstly, the airflow unit is used to blow away the dust in the electrostatic adsorption mechanism; then, the dust adsorption unit is used to adsorb the dust in the negative pressure box, resulting in a better cleaning effect.

[0014] Furthermore, the airflow unit includes an ion fan, which is connected to one end of the air blowing pipe, and the other end of the air blowing pipe is connected to the negative pressure box.

[0015] The advantages of adopting the above-mentioned further solution are that it has a simple structure and reasonable design. It uses an ion fan to output positive ion airflow and / or negative ion airflow. The positive ion airflow and / or negative ion airflow enter the interior of the negative pressure box through the air blowing pipe and act on the electrostatic adsorption mechanism to remove the dust adsorbed on the electrostatic adsorption mechanism.

[0016] Furthermore, the dust adsorption unit includes a suction pipe, a suction cylinder, and a dust collection box. The suction pipe is installed inside the negative pressure box and has several suction heads evenly spaced on it. The other end of the suction pipe extends outside the negative pressure box. The suction cylinder is installed outside the negative pressure box, with one end connected to the suction pipe, and a turbine assembly is installed inside the suction cylinder. The dust collection box is located outside the negative pressure box and is connected to the other end of the suction cylinder through a dust removal pipe.

[0017] The beneficial effect of adopting the above-mentioned further solution is that during operation, the turbine assembly creates negative pressure in the dust collection cylinder and dust collection pipe, causing several dust collection heads to sequentially draw the dust adsorbed in the electrostatic adsorption mechanism into the dust collection pipe and dust collection cylinder, and then collect it in the dust collection box through the dust removal pipe, making dust collection convenient.

[0018] Furthermore, the electrostatic adsorption mechanism includes a support frame, a first electrostatic adsorption plate, and a second electrostatic adsorption plate. The support frame is installed at the top opening of the negative pressure box and can rotate and be positioned around the horizontal center line of the top of the negative pressure box. The first electrostatic adsorption plate and the second electrostatic adsorption plate are respectively fixedly installed on both sides of the support frame, parallel to each other and parallel to the horizontal center line of the top of the negative pressure box. The support frame can drive the first electrostatic adsorption plate and the second electrostatic adsorption plate to rotate to a horizontal state.

[0019] The beneficial effect of adopting the above-mentioned further solution is that during operation, the support frame can rotate and drive the first electrostatic adsorption plate and the second electrostatic adsorption plate to be in a horizontal state, and the upper electrostatic adsorption plate is in contact with the lower surface of the conveyor belt to adsorb the dust on the lower surface of the conveyor belt. After adsorption is complete, the entire device is moved out of the conveyor belt. The support frame rotates and drives the electrostatic adsorption plate to rotate 180°, and the entire device is moved under the conveyor belt, so that the unused electrostatic adsorption plates can clean the dust on the lower surface of the conveyor belt. At the same time, the negative pressure adsorption mechanism cleans the electrostatic adsorption plates that have been used.

[0020] Furthermore, the lifting mechanism includes a scissor-type hydraulic lifting platform, and the negative pressure adsorption mechanism is installed on the top of the scissor-type hydraulic lifting platform.

[0021] The advantages of adopting the above-mentioned further solution are that it has a simple structure, reasonable design, and uses a scissor-type hydraulic lifting platform to adjust the height of the negative pressure box so as to be suitable for conveyor belts of different heights. It is versatile and easy to use.

[0022] Furthermore, the lifting mechanism also includes a supporting outer frame, which is fixedly installed, and the scissor-type hydraulic lifting platform is located inside the supporting outer frame.

[0023] The advantages of adopting the above-mentioned further solutions are that the structure is simple, the supporting frame is reasonably designed, and it is easy to assemble the scissor-type hydraulic lifting platform.

[0024] Furthermore, the roller brush cleaning mechanism includes multiple roller brush units, which are evenly spaced along the conveyor belt conveying direction on one side of the negative pressure adsorption mechanism; each roller brush unit includes a roller brush and a folding bracket, which is installed on one side of the negative pressure adsorption mechanism and can be folded and positioned; the roller brush is horizontally installed on the top of the folding bracket and can move horizontally around its own axis.

[0025] The beneficial effect of adopting the above-mentioned further solution is that during the operation of the conveyor belt, the conveyor belt uses the friction between itself and the roller brush to drive the roller brush to rotate, thereby cleaning the dust on the lower surface of the conveyor belt.

[0026] Furthermore, the folding bracket includes a first support rod, a second support rod, a third support rod, and a fourth support rod. The third and fourth support rods are distributed opposite each other on one side of the negative pressure adsorption mechanism, and can be flipped up and down and positioned respectively. The first and second support rods are distributed opposite each other, and are located above the third and fourth support rods respectively. The lower end of the first support rod is rotatably connected to and positioned with the upper end of the third support rod, and the lower end of the second support rod is rotatably connected to and positioned with the upper end of the fourth support rod. The roller brush is horizontally installed between the first and second support rods, and its two ends are rotatably connected to the upper ends of the first and second support rods respectively.

[0027] The advantages of adopting the above-mentioned further solution are that it has a simple structure, reasonable design, and the height of the roller brush can be adjusted by flipping the first, second, third and fourth support rods, thus making it suitable for conveyor belts of different heights. It is versatile and easy to use. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the overall structure of this utility model; Figure 3 This is an assembly perspective view of the electrostatic adsorption mechanism and the negative pressure adsorption mechanism in this utility model; Figure 4 This is a side view of the assembly of the electrostatic adsorption mechanism and the negative pressure adsorption mechanism in this utility model.

[0029] The attached diagram lists the components represented by each number as follows: 1. Base; 2. Roller brush cleaning mechanism; 20. Roller brush; 21. First support rod; 22. Second support rod; 23. Third support rod; 24. Fourth support rod; 25. First electric telescopic rod; 26. Second electric telescopic rod; 27. Third electric telescopic rod; 28. Fourth electric telescopic rod; 3. Electrostatic adsorption mechanism; 31. Support frame; 32. First electrostatic adsorption plate; 33. Drive motor; 34. Drive wheel; 35. Driven wheel; 36. Second electrostatic adsorption plate; 37. Belt; 4. Negative pressure adsorption mechanism; 41. Negative pressure box; 42. First bracket; 43. Second bracket; 5. Casters; 6. Scissor-type hydraulic lifting platform; 7. Support frame. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0031] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] Example 1 like Figures 1 to 4As shown, this embodiment provides a bulk cargo conveyor belt cleaning device based on electrostatic and negative pressure adsorption, including a roller brush cleaning mechanism 2, an electrostatic adsorption mechanism 3, and a negative pressure adsorption mechanism 4. The roller brush cleaning mechanism 2 is installed on one side of the negative pressure adsorption mechanism 4 and is used to clean the lower surface of the conveyor belt. The electrostatic adsorption mechanism 3 is installed on the top of the negative pressure adsorption mechanism 4 and is used to clean the electrostatic adsorption mechanism 3 after electrostatic adsorption.

[0035] During operation, the entire equipment is placed under the conveyor belt beforehand. First, the roller brush cleaning mechanism 2 is used to clean the lower surface of the conveyor belt. Then, the electrostatic adsorption mechanism 3 is used to adsorb the dust on the lower surface of the conveyor belt. Finally, the negative pressure adsorption mechanism 4 is used to clean the electrostatic adsorption mechanism 3. At this time, the entire equipment needs to be moved to the outside of the conveyor belt so that the negative pressure adsorption mechanism 4 can clean the electrostatic adsorption mechanism 3.

[0036] Preferably, this embodiment also includes a base 1, and a roller brush cleaning mechanism 2, an electrostatic adsorption mechanism 3 and a negative pressure adsorption mechanism 4 are respectively installed on the base 1.

[0037] In addition, the base 1 is preferably a rectangular block structure.

[0038] Preferably, in this embodiment, the base 1 is also provided with a handrail to facilitate pushing the entire device.

[0039] In addition, the handle is preferably a U-shaped structure, with both sides of its open end fixedly connected to the base 1.

[0040] Preferably, in this embodiment, the four corners of the base 1 are respectively equipped with traveling wheels, which facilitate the movement of the entire device and make operation convenient.

[0041] In addition, each of the above-mentioned wheels is preferably a swivel wheel 5, which can move and stop at will, making it more convenient to use.

[0042] This embodiment has a simple structure and reasonable design, which enables the cleaning of the lower end face of the return conveyor belt while the conveyor belt is working. This greatly improves the cleaning effect without delaying the operation of the conveyor belt.

[0043] Example 2 Based on Embodiment 1, this embodiment also includes a lifting mechanism. The negative pressure adsorption mechanism 4 is installed on the lifting mechanism, and the lifting mechanism is used to drive the negative pressure adsorption mechanism 4 to rise and fall. The roller brush cleaning mechanism 2 can be flipped up and down and positioned.

[0044] The solution has a simple structure and reasonable design. It uses a lifting mechanism to adjust the height of the negative pressure adsorption mechanism 4 and the height of the roller brush cleaning mechanism 2, so that it can be used for conveyor belts of different heights. It has strong versatility and is easy to use.

[0045] Example 3 Based on Embodiment 2, in this embodiment, the negative pressure adsorption mechanism 4 includes a negative pressure box 41, an airflow unit, and a dust adsorption unit. The negative pressure box 41 is fixedly installed on the top of the lifting mechanism, with an open top. The electrostatic adsorption mechanism 3 is installed at the open top of the negative pressure box 41. The airflow unit is installed on the outer wall of the negative pressure box 41 and is connected to the negative pressure box 41 through an air blowing pipe. It is used to output positive ion airflow and / or negative ion airflow to blow away the electrostatic adsorption mechanism 3. The dust adsorption unit is located outside the negative pressure box 41 and is connected to the negative pressure box 41. It is used to suck out the dust inside the negative pressure box 41.

[0046] During operation, firstly, the airflow unit is used to blow away the dust in the electrostatic adsorption mechanism 3; then, the dust adsorption unit is used to adsorb the dust in the negative pressure box 41, resulting in a better cleaning effect.

[0047] Preferably, in this embodiment, the negative pressure box 41 is a rectangular box.

[0048] Example 4 Based on Embodiment 3, in this embodiment, the airflow unit includes an ion fan, which is connected to one end of the air blowing pipe, and the other end of the air blowing pipe is connected to the negative pressure box 41.

[0049] The scheme has a simple structure and reasonable design. It uses an ion fan to output positive ion airflow and / or negative ion airflow. The positive ion airflow and / or negative ion airflow enter the interior of the negative pressure box 41 through the air blowing pipe and act on the electrostatic adsorption mechanism 3 to remove the dust adsorbed on the electrostatic adsorption mechanism 3.

[0050] It should be noted that the above-mentioned ion fan uses existing technology, and its specific structure and principle will not be described in detail here.

[0051] Example 5 Based on any one of Embodiments 3 to 4, in this embodiment, the dust adsorption unit includes a suction pipe, a suction cylinder, and a dust collection box. The suction pipe is installed inside the negative pressure box 41, and a plurality of suction heads are evenly spaced on it. The other end of the suction pipe extends outside the negative pressure box 41. The suction cylinder is installed outside the negative pressure box 41, with one end connected to the suction pipe, and a turbine assembly is installed inside the suction cylinder. The dust collection box is distributed outside the negative pressure box 41 and is connected to the other end of the suction cylinder through a dust removal pipe.

[0052] During operation, the turbine assembly creates negative pressure inside the dust collection cylinder and suction pipe, causing several suction heads to sequentially draw the dust adsorbed by the electrostatic adsorption mechanism 3 into the suction pipe and dust collection cylinder, and then collect it in the dust collection box through the dust removal pipe, making dust collection convenient.

[0053] Preferably, in this embodiment, the turbine assembly includes a turbine motor and turbine blades. The turbine motor is fixedly installed inside the dust collection cylinder, and its drive end extends along the axial direction of the dust collection cylinder. The turbine blades are fixedly sleeved on the drive end of the turbine motor. During operation, the turbine motor drives the turbine blades to rotate, creating a negative pressure inside the dust collection cylinder and the dust collection pipe. Several dust collection heads then adsorb the dust on the electrostatic adsorption mechanism into the dust collection pipe and the dust collection cylinder.

[0054] Example 6 Based on any one of Embodiments 3 to 5, in this embodiment, the electrostatic adsorption mechanism 3 includes a support frame 31, a first electrostatic adsorption plate 32, and a second electrostatic adsorption plate 36. The support frame 31 is installed at the top opening of the negative pressure box 41 and can rotate and be positioned around the horizontal center line of the top of the negative pressure box 41. The first electrostatic adsorption plate 32 and the second electrostatic adsorption plate 36 are respectively fixedly installed on both sides of the support frame 31, are parallel to each other and are respectively parallel to the horizontal center line of the top of the negative pressure box 41. The support frame 31 can drive the first electrostatic adsorption plate 32 and the second electrostatic adsorption plate 36 to rotate to a horizontal state.

[0055] During operation, the support frame 31 can rotate and drive the first electrostatic adsorption plate 32 and the second electrostatic adsorption plate 36 to a horizontal state. The upper electrostatic adsorption plate is in contact with the lower surface of the conveyor belt to adsorb dust on the lower surface of the conveyor belt. After adsorption is completed, the entire device is moved out of the conveyor belt. The support frame 31 rotates and drives the electrostatic adsorption plate to rotate 180°, and moves the entire device to the bottom of the conveyor belt, so that the unused electrostatic adsorption plate can clean the dust on the lower surface of the conveyor belt. At the same time, the negative pressure adsorption mechanism 4 cleans the electrostatic adsorption plate that has been used.

[0056] Preferably, in this embodiment, the middle part (at the axis of symmetry) of the first electrostatic adsorption plate 32 and the second electrostatic adsorption plate 36 is fixedly connected to the support frame 31.

[0057] Based on the above scheme, during operation, the support frame 31 rotates and drives the two electrostatic adsorption plates to rotate to a horizontal state. At this time, the first electrostatic adsorption plate 32 is located above the second electrostatic adsorption plate 36, and the first electrostatic adsorption plate 32 is in contact with the lower surface of the conveyor belt. The first electrostatic adsorption plate 32 is activated to adsorb dust on the lower surface of the conveyor belt. At this time, the second electrostatic adsorption plate 36 is not activated.

[0058] After the first electrostatic adsorption plate 32 has finished adsorbing, the entire device is moved to the outside of the conveyor belt. At this time, the support frame 31 rotates and drives the first electrostatic adsorption plate 32 and the second electrostatic adsorption plate 36 to rotate 180°, so that the first electrostatic adsorption plate 32 is below the second electrostatic adsorption plate 36. Then the entire device is moved to the outside of the conveyor belt, so that the second electrostatic adsorption plate 36 is in contact with the lower surface of the conveyor belt, and the second electrostatic adsorption plate 36 is activated to adsorb the dust on the lower surface of the conveyor belt. At this time, the first electrostatic adsorption plate 32 is not activated, and the negative pressure adsorption mechanism 4 cleans the dust adsorbed by the first electrostatic adsorption plate 32.

[0059] It should be noted that, in order to prevent wire tangling, the first electrostatic adsorption plate 32 is located at the center of one end of the second electrostatic adsorption plate 36 and is connected to the power supply cable via a slip ring.

[0060] Preferably, in this embodiment, the negative pressure box 41 is fixedly mounted with a first bracket 42 and a second bracket 43 at both ends. The support frame 31 has a pivot structure, and its two ends are rotatably connected to the first bracket 42 and the second bracket 43 respectively. The first electrostatic adsorption plate 32 and the second electrostatic adsorption plate 36 are distributed relative to the support frame 31. The support frame 31 is located between the first electrostatic adsorption plate 32 and the second electrostatic adsorption plate 36, and the first electrostatic adsorption plate 32 and the second electrostatic adsorption plate 36 are fixedly connected to the support frame 31 through multiple connecting rods.

[0061] In addition, a drive motor 33 is fixedly installed on the first bracket 42. The drive end of the drive motor 33 extends horizontally along the direction from one end of the negative pressure box 41 to the other end and is coaxially fixedly fitted with a drive wheel 34. The driven wheel 35 is coaxially fixedly fitted on the end of the support frame 31 near the drive motor 33 and is connected to the drive wheel 34 by a belt 37. During operation, the drive motor 33 drives the drive wheel 34 to rotate, and the drive wheel 34 drives the driven wheel 35 and the support frame 31 to rotate by the belt 37, thereby realizing the flipping of the first electrostatic adsorption plate 32 and the second electrostatic adsorption plate 36.

[0062] It should be noted that the bottom dimension of the negative pressure box 41 is slightly larger than the dimensions of the first electrostatic adsorption plate 32 and the second electrostatic adsorption plate 36, ensuring that the first electrostatic adsorption plate 32 and the second electrostatic adsorption plate 36 can be flipped at the top opening of the negative pressure box 41.

[0063] Example 7 Based on any one of Embodiments 2 to 6, in this embodiment, the lifting mechanism includes a scissor-type hydraulic lifting platform 6, and the negative pressure adsorption mechanism 4 is installed on the top of the scissor-type hydraulic lifting platform 6.

[0064] The solution has a simple structure and reasonable design. It uses a scissor-type hydraulic lifting platform 6 to adjust the height of the negative pressure box 41 so that it can be used for conveyor belts of different heights. It is versatile and easy to use.

[0065] Preferably, in this embodiment, the scissor-type hydraulic lifting platform 6 adopts existing technology, and its specific structure and principle will not be described in detail here.

[0066] Example 8 Based on Embodiment 7, in this embodiment, the lifting mechanism further includes a supporting outer frame 7, which is fixedly installed, and the scissor-type hydraulic lifting platform 6 is located inside the supporting outer frame 7.

[0067] The design is simple, with a well-designed outer frame 7 that facilitates the assembly of the scissor-type hydraulic lifting platform 6.

[0068] Preferably, in this embodiment, the supporting outer frame 7 is a rectangular frame.

[0069] Preferably, in this embodiment, the scissor-type hydraulic lifting platform 6 can be unfolded to move the negative pressure box 41 upward until the electrostatic adsorption mechanism 3 is in contact with the lower surface of the conveyor belt, or the scissor-type hydraulic lifting platform 6 can be retracted to move the negative pressure box 41 downward until the negative pressure box 41 is in contact with the upper end of the supporting outer frame 7.

[0070] Example 9 Based on the above embodiments, in this embodiment, the roller brush cleaning mechanism 2 includes multiple roller brush units, which are evenly spaced along the conveyor belt conveying direction on one side of the negative pressure adsorption mechanism 4; each roller brush unit includes a roller brush 20 and a folding bracket, which is installed on one side of the negative pressure adsorption mechanism 4 and can be folded and positioned; the roller brush 20 is horizontally installed on the top of the folding bracket and can move horizontally around its own axis.

[0071] During the operation of the conveyor belt, the conveyor belt uses the friction between itself and the roller brush 20 to drive the roller brush 20 to rotate, so as to clean the dust on the lower surface of the conveyor belt.

[0072] Based on the above scheme, multiple roller brush units are evenly spaced on the base 1 along the conveyor belt conveying direction.

[0073] Preferably, in this embodiment, the number of the above-mentioned roller brush units is preferably 2-3.

[0074] The aforementioned roller brush unit can also be used alone, but the cleaning effect of one roller brush unit is not as good as that of multiple solutions.

[0075] Example 10 Based on Embodiment 9, in this embodiment, the folding bracket includes a first support rod 21, a second support rod 22, a third support rod 23, and a fourth support rod 24. The third support rod 23 and the fourth support rod 24 are distributed opposite to each other on one side of the negative pressure adsorption mechanism 4, and can be flipped up and down and positioned respectively. The first support rod 21 and the second support rod 22 are distributed opposite to each other, and are located above the third support rod 23 and the fourth support rod 24 respectively. The lower end of the first support rod 21 is rotatably connected to and positioned with the upper end of the third support rod 23, and the lower end of the second support rod 22 is rotatably connected to and positioned with the upper end of the fourth support rod 24. The roller brush is horizontally installed between the first support rod 21 and the second support rod 22, and its two ends are rotatably connected to the upper ends of the first support rod 21 and the upper ends of the second support rod 22 respectively.

[0076] The solution has a simple structure and reasonable design. It uses the up-and-down flipping of the first support rod 21, the second support rod 22, the third support rod 23 and the fourth support rod 24 to adjust the height of the roller brush 20, so that it can be used for conveyor belts of different heights. It is versatile and easy to use.

[0077] Preferably, in this embodiment, a base plate is horizontally fixedly installed on the base 1. The lower ends of the third support rod 23 and the fourth support rod 24 are rotatably connected to the two ends of the base plate, respectively. The third support rod 23 and the fourth support rod 24 are connected to the base 1 via electric telescopic rods. The telescopic end of each electric telescopic rod is rotatably connected to the corresponding support rod, and its end is rotatably connected to the base 1. During operation, the telescopic movement of the two electric telescopic rods enables the third support rod 23 and the fourth support rod 24 to flip up and down.

[0078] In addition, fixed plates are horizontally fixedly installed on the upper ends of the third support rod 23 and the fourth support rod 24, respectively. Electric telescopic rods are installed on the two fixed plates, with their telescopic ends rotatably connected to the first support rod 21 and the second support rod 22, respectively, and their ends rotatably connected to the two fixed plates. During operation, the extension and retraction of the two electric telescopic rods are used to flip the first support rod 21 and the second support rod 22 up and down.

[0079] Based on the above scheme, the electric telescopic rod connecting the third support rod 23 and the base 1 is the first electric telescopic rod 25, the electric telescopic rod connecting the first support rod 21 and the third support rod 23 is the second electric telescopic rod 26, the electric telescopic rod connecting the fourth support rod 24 and the base 1 is the third electric telescopic rod 27, and the electric telescopic rod connecting the second support rod 22 and the fourth support rod 24 is the fourth electric telescopic rod 28.

[0080] During operation, the first electric telescopic rod 25, the second electric telescopic rod 26, the third electric telescopic rod 27 and the fourth electric telescopic rod 28 move synchronously to flip the roller brush 20 so that the roller brush 20 is in contact with the lower surface of the conveyor belt. The operation of the conveyor belt drives the roller brush 20 to rotate to clean the lower surface of the conveyor belt.

[0081] Based on the above scheme, since the height difference between conveyor belts of different heights is small, the four electric telescopic rods only need to drive the first rod 21, the second rod 22, the third rod 23 and the fourth rod 24 to rotate by a small angle to ensure that the roller brush 20 is in contact with the lower surface of the conveyor belt.

[0082] In addition, the first support rod 21, the second support rod 22, the third support rod 23 and the fourth support rod 24 will not be completely folded. The first support rod 21 and the second support rod 22, the third support rod 23 and the fourth support rod 24 are roughly V-shaped after being folded to meet cleaning needs.

[0083] The working principle of this utility model is as follows: During operation, the entire equipment is placed under the conveyor belt in advance. First, according to the height of the conveyor belt to be cleaned, the first electric telescopic rod 25, the second electric telescopic rod 26, the third electric telescopic rod 27 and the fourth electric telescopic rod 28 simultaneously rotate the roller brush 20 so that the roller brush 20 is in contact with the lower surface of the conveyor belt. The operation of the conveyor belt drives the roller brush 20 to rotate to clean the lower surface of the conveyor belt. Then, the negative pressure box 41 is adjusted to the set height using the scissor-type hydraulic lifting platform 6, and the drive motor 33 drives the drive wheel 34 to rotate. The drive wheel 34 drives the driven wheel 35 and the support frame 31 to rotate via the belt 37, thereby realizing the flipping of the first electrostatic adsorption plate 32 and the second electrostatic adsorption plate 36 to a horizontal state, so that the first electrostatic adsorption plate 32 is in contact with the lower surface of the conveyor belt, and the first electrostatic adsorption plate 32 adsorbs the dust on the lower surface of the conveyor belt. After the dust is adsorbed, the entire equipment is moved manually to the outside of the conveyor belt. The drive motor 33 drives the drive wheel 34 to rotate. The drive wheel 34 drives the driven wheel 35 and the support frame 31 to rotate via the belt 37, thereby flipping the first electrostatic adsorption plate 32 and the second electrostatic adsorption plate 36 to a horizontal state, so that the second electrostatic adsorption plate 36 is above the first electrostatic adsorption plate 32. Then the equipment is moved to the bottom of the conveyor belt so that the second electrostatic adsorption plate 36 is in contact with the lower surface of the conveyor belt to adsorb the dust on the lower surface of the conveyor belt. During this process, positive ion airflow and / or negative ion airflow are output by the ion fan. The positive ion airflow and / or negative ion airflow enter the interior of the negative pressure box 41 through the air blowing pipe and act on the electrostatic adsorption mechanism 3 to remove the dust adsorbed on the electrostatic adsorption mechanism 3. At the same time, the turbine motor drives the turbine blades to rotate, creating a negative pressure inside the dust collection cylinder and dust collection pipe. Several dust collection heads then attract the dust from the electrostatic adsorption mechanism into the dust collection pipe and dust collection cylinder. The dust in the dust collection cylinder enters the dust collection box through the dust removal pipe, thus collecting the dust.

[0084] The advantages of this utility model are as follows: (1) First, the large volume of residue on the lower end face of the return conveyor belt is cleaned by the roller brush cleaning mechanism, and then the fine particles on the lower end face of the return conveyor belt are cleaned by electrostatic adsorption mechanism. It can achieve good cleaning effect in the case of large volume and difficult cleaning of bulk material yard.

[0085] (2) The turbine blades are driven by the motor to rotate at high speed in the dust collection cylinder, generating negative pressure in the dust collection cylinder. At this time, suction can be generated through the dust collection pipe. The dust in the negative pressure box can continuously enter the dust collection cylinder along the dust collection head. The dust in the dust collection cylinder can enter the dust collection box along the dust removal pipe, which can achieve fast and efficient cleaning without affecting the operation of the conveyor belt.

[0086] (3) The height of the roller brush unit, electrostatic adsorption mechanism and negative pressure adsorption mechanism can be adjusted to adapt to different conveyor belt heights.

[0087] (4) By setting up an airflow unit, not only can the dust adsorbed on the electrostatic adsorption plate be quickly removed by positive ion airflow and / or negative ion airflow, making it convenient for the negative pressure adsorption mechanism to perform negative pressure adsorption, but also the dust gathered at the bottom of the negative pressure vacuum box can be blown up and then subjected to negative pressure adsorption, preventing the dust from condensing at the bottom of the negative pressure vacuum box.

[0088] (5) By setting casters, the device can be moved easily and can be flexibly adjusted.

[0089] The purpose of this invention is to provide a bulk cargo conveyor belt cleaning device based on electrostatic and negative pressure adsorption, which can clean the lower end face of the return conveyor belt in real time while the conveyor belt is working, without delaying the operation of the conveyor belt, and greatly improving the cleaning effect.

[0090] It should be noted that in actual operation, two cleaning devices provided by this utility model can be used in conjunction. Specifically, after one electrostatic adsorption plate in one of the devices has finished adsorbing, the entire device is moved outside the conveyor belt so that the subsequent negative pressure adsorption mechanism can clean the electrostatic adsorption plate. At this time, the other device can be moved below the conveyor belt to carry out the cleaning operation, so as to achieve continuous cleaning of the conveyor belt.

[0091] In addition, all electronic components involved in this utility model adopt existing technology, and all the above-mentioned components are electrically connected to the controller, and the control circuit between the controller and each component is existing technology.

[0092] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0093] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0094] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cleaning device for bulk cargo conveyor belts based on electrostatic and negative pressure adsorption, characterized in that: It includes a roller brush cleaning mechanism (2), an electrostatic adsorption mechanism (3), and a negative pressure adsorption mechanism (4). The roller brush cleaning mechanism (2) is installed on one side of the negative pressure adsorption mechanism (4) and is used to clean the lower surface of the conveyor belt. The electrostatic adsorption mechanism (3) is installed on the top of the negative pressure adsorption mechanism (4) and is used to clean the electrostatic adsorption mechanism (3) after electrostatic adsorption.

2. The bulk cargo conveyor belt cleaning device based on electrostatic and negative pressure adsorption according to claim 1, characterized in that: It also includes a lifting mechanism, the negative pressure adsorption mechanism (4) is installed on the lifting mechanism, and the lifting mechanism is used to drive the negative pressure adsorption mechanism (4) to rise and fall; the roller brush cleaning mechanism (2) can be flipped up and down and positioned.

3. The bulk cargo conveyor belt cleaning device based on electrostatic and negative pressure adsorption according to claim 2, characterized in that: The negative pressure adsorption mechanism (4) includes a negative pressure box (41), an airflow unit, and a dust adsorption unit. The negative pressure box (41) is fixedly installed on the top of the lifting mechanism, with an open top. The electrostatic adsorption mechanism (3) is installed at the open top of the negative pressure box (41). The airflow unit is installed on the outer wall of the negative pressure box (41) and is connected to the negative pressure box (41) through an air blowing pipe. It is used to output positive ion airflow and / or negative ion airflow to blow the electrostatic adsorption mechanism (3). The dust adsorption unit is located outside the negative pressure box (41) and is connected to the negative pressure box (41). It is used to suck out the dust inside the negative pressure box (41).

4. The bulk cargo conveyor belt cleaning device based on electrostatic and negative pressure adsorption according to claim 3, characterized in that: The airflow unit includes an ion fan, which is connected to one end of the air blowing pipe and the other end of the air blowing pipe is connected to the negative pressure box (41).

5. The bulk cargo conveyor belt cleaning device based on electrostatic and negative pressure adsorption according to claim 3, characterized in that: The dust adsorption unit includes a suction pipe, a suction cylinder, and a dust collection box. The suction pipe is installed inside the negative pressure box (41) and has several suction heads evenly spaced on it. The other end of the suction pipe extends outside the negative pressure box (41). The suction cylinder is installed outside the negative pressure box (41) and has one end connected to the suction pipe. A turbine assembly is installed inside the suction cylinder. The dust collection box is located outside the negative pressure box (41) and is connected to the other end of the suction cylinder through a dust removal pipe.

6. The bulk cargo conveyor belt cleaning device based on electrostatic and negative pressure adsorption according to claim 3, characterized in that: The electrostatic adsorption mechanism (3) includes a support frame (31), a first electrostatic adsorption plate (32), and a second electrostatic adsorption plate (36). The support frame (31) is installed at the top opening of the negative pressure box (41) and can rotate and be positioned around the horizontal center line of the top of the negative pressure box (41). The first electrostatic adsorption plate (32) and the second electrostatic adsorption plate (36) are respectively fixedly installed on both sides of the support frame (31), which are parallel to each other and parallel to the horizontal center line of the top of the negative pressure box (41). The support frame (31) can drive the first electrostatic adsorption plate (32) and the second electrostatic adsorption plate (36) to rotate to a horizontal state.

7. The bulk cargo conveyor belt cleaning device based on electrostatic and negative pressure adsorption according to claim 2, characterized in that: The lifting mechanism includes a scissor-type hydraulic lifting platform (6), and the negative pressure adsorption mechanism (4) is installed on the top of the scissor-type hydraulic lifting platform (6).

8. The bulk cargo conveyor belt cleaning device based on electrostatic and negative pressure adsorption according to claim 7, characterized in that: The lifting mechanism also includes a supporting outer frame (7), which is fixedly installed, and the scissor-type hydraulic lifting platform (6) is located inside the supporting outer frame (7).

9. The bulk cargo conveyor belt cleaning device based on electrostatic and negative pressure adsorption according to any one of claims 1-8, characterized in that: The roller brush cleaning mechanism (2) includes multiple roller brush units, which are evenly spaced along the conveyor belt conveying direction on one side of the negative pressure adsorption mechanism (4); each roller brush unit includes a roller brush (20) and a folding bracket, which is installed on one side of the negative pressure adsorption mechanism (4) and can be folded and positioned; the roller brush (20) is horizontally installed on the top of the folding bracket and can move horizontally around its own axis.

10. The bulk cargo conveyor belt cleaning device based on electrostatic and negative pressure adsorption according to claim 9, characterized in that: The folding bracket includes a first support rod (21), a second support rod (22), a third support rod (23), and a fourth support rod (24). The third support rod (23) and the fourth support rod (24) are distributed opposite to each other on one side of the negative pressure adsorption mechanism (4), and can be flipped up and down and positioned respectively. The first support rod (21) and the second support rod (22) are distributed opposite to each other, and are located above the third support rod (23) and the fourth support rod (24) respectively. The lower end of the first support rod (21) is rotatably connected to and positioned with the upper end of the third support rod (23), and the lower end of the second support rod (22) is rotatably connected to and positioned with the upper end of the fourth support rod (24). The roller brush (20) is horizontally installed between the first support rod (21) and the second support rod (22), and its two ends are rotatably connected to the upper ends of the first support rod (21) and the upper ends of the second support rod (22) respectively.

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