Belt conveyor self-cleaning device and belt conveyor having the same

Abstract

The present invention relates to the technical field of conveyors, and specifically discloses a belt conveyor self-cleaning device and a belt conveyor having the same, comprising: a cleaning component arranged on the belt conveyor, the cleaning component comprising: two rotating frames, a scraper, a cleaning brush and a transmission component; the two rotating frames are arranged at the front and rear edge positions of the lower side of the conveyor belt, a plurality of cleaning brushes are arranged around the axis of the rotating frames, the linear speed of the cleaning brush rotation is the same as that of the conveyor belt, a mounting piece is provided on the end of the rotating frame away from its own axis, the cleaning brush is arranged on the mounting piece for rotation around its own axis, the scraper is arranged for rotation around the axis of the cleaning brush, the transmission component drives the cleaning brush to rotate, and the cleaning brush and the scraper are elastically hinged; a belt conveyor self-cleaning device of the present invention can clean the folds of the conveyor belt and self-clean the cleaning brush at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of conveyors, and in particular to a belt conveyor self-cleaning device and a belt conveyor having the same. Background Art

[0002] In industrial production, belt conveyors are key equipment for continuous material transportation, used in industries such as mining, ports, power generation, and chemicals. Currently, after conveying materials, a large amount of material often remains on the belt surface. If not cleaned promptly, this not only leads to material waste but can also cause belt deviation, increased wear, and drive roller slippage, seriously impacting the normal operation and service life of the equipment.

[0003] Currently, the commonly used cleaning methods for belt conveyors include scraper cleaners and brush cleaners. Scraper cleaners use rigid scrapers to contact the conveyor belt surface and scrape off residual materials. However, due to the vibration and deformation of the conveyor belt during operation, it is difficult for the rigid scraper to always maintain a good fit with the conveyor belt surface, which can easily result in incomplete cleaning and may also scratch the conveyor belt. Although brush cleaners can better adapt to the deformation of the conveyor belt, their cleaning effect is greatly affected by brush wear. With the increase in use, the cleaning ability of the brush will gradually decline. In addition, the operation of replacing the brush is cumbersome, increasing the maintenance cost and downtime of the equipment.

[0004] Chinese patent application publication number CN115924465A discloses a belt conveyor cleaning mechanism and a cleaning method thereof. The belt conveyor cleaning mechanism includes a mounting base, a scraper assembly, and a cleaning assembly. The cleaning method comprises fixing the mounting base, along with the scraper assembly and cleaning assembly, below the return section of the belt conveyor. When a small amount of material adheres to the conveyor belt in the return section, the brush on the cleaning assembly is brought into contact with the bottom of the belt conveyor. A controller controls a telescopic cylinder to lower the height of the scraper below the height of the brush, allowing only the brush to be used to clean the conveyor belt. When a large amount of material remains on the conveyor belt in the return section, the material, having a certain thickness, automatically presses down the rectangular frame, exposing the scraper, which then scrapes away the material.

[0005] In the related existing technology, annular skirts are added to both sides of the belt conveyor for material transportation to improve the conveying capacity of the conveyor belt and reduce the problem of material falling from the conveyor belt. When the conveyor belt with skirts conveys materials, the folds of the skirt part are prone to material accumulation. The existing cleaning equipment cannot effectively clean the residual material on the skirt part. With the increase of usage time and the different materials, the material in the skirt folds will become harder and difficult to clean quickly and effectively. The residual material will lead to a decrease in the conveying capacity of the conveyor belt and an increase in the failure rate. Summary of the Invention

[0006] The present invention provides a belt conveyor self-cleaning device and a belt conveyor equipped with the same, aiming to solve the problem in the related art that the material remaining in the skirt part cannot be effectively cleaned. As the use time increases and the material is different, the material in the skirt folds will become harder and difficult to clean quickly and effectively. The residual material will lead to a decrease in the conveying capacity of the conveyor belt and an increase in the failure rate.

[0007] The cleaning brush of the present invention is a device for cleaning the cleaning surface of the conveyor belt, the cleaning brush being installed on the conveyor belt and the cleaning brush being installed on the conveyor belt.

[0008] The effect is as follows: by setting a rotating frame, a scraper, a cleaning brush and a transmission assembly, the rotating frame revolves at the front and rear edges of the lower side of the conveyor belt, and the cleaning brush rotates around its own axis while moving with the rotating frame. The revolution speed of the cleaning brush is the same as the rotation speed of the conveyor belt, so that the cleaning brush can accurately clean the wrinkles on the conveyor belt. The scraper is connected to the cleaning brush by an elastic hinge. When the cleaning brush rotates, the scraper scrapes off impurities that are difficult to clean on the inner wall of the wrinkles. When the cleaning brush sweeps away loose materials, the scraper abuts against the inner wall of the wrinkles, and the scraper and the cleaning brush rotate relative to each other, using the edge comb teeth to scrape off residues adhering to the bristles. It can effectively remove material residues in the wrinkles of the skirt conveyor belt and reduce conveyor belt wear caused by hardening of residues. While maintaining the cleaning effect, the device extends the service life of the cleaning components and reduces the frequency of equipment maintenance.

[0009] Preferably, in horizontal projection, the outer periphery of the cleaning brush is located outside the scraper, and the side wall of the scraper near the axis of the cleaning brush is comb-shaped. The effect is that: conventional cleaning devices using only a single scraper or rotating brush structure cannot effectively clean the complex inner surface of the skirt folds, and are prone to bristle wear or residue accumulation when cleaning hard agglomerates. The coordinated design of the comb-shaped scraper and the cleaning brush allows the cleaning brush to deeply clean the inner surface of the folds while simultaneously removing impurities from the cleaning brush itself, forming a self-maintaining cleaning cycle.

[0010] Preferably, a horizontal support plate is provided on the lower side of the conveyor belt, a hollow support column is vertically provided on the support plate, a rotating frame is coaxially rotated on the support column, and a driving source is provided at the lower end of the support column, which causes the rotating frame to rotate around the axis.

[0011] Preferably, the transmission assembly includes multiple drive shafts, the mounting part is a sliding block, the multiple sliding blocks are arranged on the rotating frame around the axis of the rotating frame, the cleaning brush is rotatably arranged at one end of the sliding block away from the rotating frame, the drive shaft is arranged in the sliding block, one end of the drive shaft is engaged with the bevel gear on the support column, and the other end is engaged with the bevel gear of the cleaning brush.

[0012] Preferably, a slot is provided on the upper edge of the support plate in the front-to-back direction, the support column is installed in the slot along the front-to-back sliding direction, a fastening bolt is provided between the support column and the support plate, the sliding block is telescopically provided on the rotating frame, the sliding block approaches or moves away from the rotating frame horizontally, a fastening bolt is provided between the sliding block and the rotating frame, the middle section of the drive shaft is provided as a telescopic rod, and a limiting ring is provided on the sliding block and the rotating frame so that the two ends of the drive shaft are always kept engaged.

[0013] Preferably, a torsion spring is provided at the hinge of the cleaning brush and the scraper, and the torsion spring is sleeved on the cleaning brush. One end of the torsion spring is connected to the cleaning brush, and the other end is connected to the scraper. The effect is that the torsion spring makes the cleaning brush and the scraper softly connected, ensuring that the cleaning brush cleans normally. When the resistance of the scraper to movement increases, the cleaning brush and the scraper can rotate relative to each other, thereby reducing the damage of the scraper to the conveyor belt.

[0014] Preferably, cleaning cotton is provided on the support plate, and the cleaning cotton is arranged on the right side of the support plate along the front-to-back direction, and the upper end of the cleaning cotton is in contact with the conveyor belt.

[0015] Preferably, a discharge port is provided on the support plate, and the discharge port is arranged along the front-to-back direction, and the right end of the discharge port is in close contact with the left end of the cleaning cotton. The effect is: a discharge port is provided in close contact with the left end of the cleaning cotton, so that impurities can be quickly discharged along the discharge port, avoiding secondary accumulation and affecting cleaning.

[0016] Preferably, the front and rear sides of the cleaning cotton abut against the skirt of the conveyor belt.

[0017] A belt conveyor is provided with the cleaning assembly described above, and its effect is that: the belt conveyor is provided with the cleaning assembly described above, and the cleaning brush installed on the rotating frame enters the skirt fold area through the revolution motion, and the rotation motion makes the bristles penetrate into the fold gap to perform rotational cleaning, and the scraper abuts against the inner wall of the fold under the elastic hinge action. During the rotation of the cleaning brush, the comb-shaped edge of the scraper peels off the hard materials remaining between the bristles, and through the combined motion of the rotating frame and the cleaning brush, the cleaning assembly can continue to penetrate into different folds, which can make the existing skirt-type belt conveyor have a better cleaning effect, and at the same time, the cleaning device can be automatically cleaned to keep it in a good cleaning state, which solves the problem that the sweeper in the prior art cannot adapt to the skirt folds.

[0018] By adopting the above technical solution, the beneficial effects of the present invention are:

[0019] 1. By arranging a turret, scraper, cleaning brush, and transmission assembly, the cleaning brush rotates simultaneously with the turret and around its own axis. The speed of the cleaning brush's revolutions matches the speed of the conveyor belt, enabling the cleaning brush to accurately clean wrinkles on the conveyor belt. The scraper is elastically hinged to the cleaning brush. As the cleaning brush rotates, it scrapes away impurities that are difficult to remove from the inner walls of the wrinkles. The scraper abuts the inner wall of the wrinkles, generating relative rotation between the scraper and the cleaning brush. The comb teeth on the scraper's edge scrape away residue adhering to the bristles.

[0020] 2. By setting up a rotating frame and a cleaning brush, the inner wall of the skirt folds can be effectively cleaned, and the accumulation of impurities in the bristles can be easily caused when cleaning. The coordinated design of the comb-shaped scraper and the cleaning brush can achieve deep cleaning of the inner wall of the folds by the cleaning brush while simultaneously completing the removal of impurities from the cleaning brush itself, forming a self-maintaining cleaning cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the belt conveyor of the present invention.

[0022] Figure 2 It is a structural schematic diagram of the cleaning component of the present invention.

[0023] Figure 3 Schematic diagram of the structure of the support plate of the present invention.

[0024] Figure 4 It is a structural schematic diagram of the cleaning brush of the present invention.

[0025] Figure 5 It is a structural schematic diagram of the rotating rack of the present invention.

[0026] Figure 6 It is a structural schematic diagram of the scraper of the present invention.

[0027] Figure 7 It is a structural schematic diagram of the transmission assembly of the present invention.

[0028] Figure 8 For the present invention Figure 7 Enlarged schematic diagram of part A.

[0029] Figure 9 It is a schematic structural diagram of the scraper and torsion spring of the present invention.

[0030] Reference numerals:

[0031] 1. Cleaning assembly; 11. Rotating frame; 12. Scraper; 13. Cleaning brush; 14. Torsion spring; 2. Transmission assembly; 21. Drive shaft; 22. Sliding block; 23. Limiting ring; 3. Conveyor belt; 31. Pleats; 4. Support plate; 411. Notch; 42. Support column; 43. Cleaning cotton; 44. Feeding port. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0033] like Figures 1 to 9 As shown, a belt conveyor self-cleaning device includes a cleaning component 1 arranged on the belt conveyor, and the cleaning component 1 includes: two rotating frames 11, scrapers 12, cleaning brushes 13 and a transmission component 2; the two rotating frames 11 are arranged at the front and rear edge positions of the lower side of the conveyor belt 3, and a plurality of cleaning brushes 13 are arranged around the axis of the rotating frames 11. The linear speed of the cleaning brush 13 is the same as that of the conveyor belt 3. A mounting piece is provided on the end of the rotating frame 11 away from its own axis. The cleaning brush 13 is rotatably arranged on the mounting piece around its own axis, and the scraper 12 is rotatably arranged around the axis of the cleaning brush 13. The transmission component 2 drives the cleaning brush 13 to rotate, and the cleaning brush 13 and the scraper 12 are elastically hinged.

[0034] Through the combined motion of the rotating frame 11 and the cleaning brush 13, the cleaning components cover the pleat 31 area. The elastically hinged scraper 12 can adapt to the shapes of pleats 31 of different depths and angles. The relative rotation of the cleaning brush 13 and the scraper 12 forms a self-cleaning mechanism, which solves the secondary contamination problem caused by the residue of the cleaning tool itself in the prior art, effectively removes material residue within the pleats 31 of the skirt conveyor belt, and reduces the wear of the conveyor belt 3 caused by the hardening of the residue. The cleaning brush 13 and the conveyor belt 3 move synchronously to avoid speed differences that lead to inaccurate cleaning of the pleats 31. The elastic hinged structure ensures that the scraper 12 continues to adhere to the inner wall of the pleats 31. The transmission component 2 realizes efficient power transmission, while maintaining the cleaning effect, extending the service life of the cleaning components and reducing the frequency of equipment maintenance.

[0035] like Figures 3 to 5 As shown, a horizontal support plate 4 is provided on the underside of the conveyor belt 3, and a hollow support column 42 is vertically provided on the support plate 4. The support plate 4 is a horizontal base capable of supporting the rotating frame 11 assembly. Specifically, it can be implemented using a steel plate with a thickness of 5-8mm. This structure provides a stable installation foundation for the cleaning assembly 1. The support column 42 is a hollow cylinder that vertically passes through the support plate 4. The support column 42 is vertically provided on the support plate 4, and its inner cavity can accommodate the drive shaft. The hollow design of the support column 42 ensures structural strength while realizing internal space utilization.

[0036] The turret 11 is coaxially mounted on the support column 42. A drive source is provided at the lower end of the support column 42, which causes the turret 11 to rotate about its axis. The coaxial arrangement of the turret 11 refers to an assembly method in which the center of rotation of the cleaning assembly 1 coincides with the axis of the support column 42. This can be achieved by sleevedly mounting the turret 11 on the support column 42. This structure ensures the stability of the turret 11 during rotation. The drive source refers to a device that outputs rotational power, specifically a reduction motor or hydraulic motor, whose output shaft is directly connected to the turret 11 via a speed reducer. The drive source is mounted at the lower end of the support column 42, causing the turret 11 to rotate relative to the support column 42. This arrangement shortens the power transmission path and makes power transmission more stable.

[0037] The turret 11 is rotatably connected to the support column 42 via a deep-groove ball bearing. The torque generated by the drive source is directly transmitted to the turret 11 via a speed reducer. When the conveyor belt 3 is in operation, the drive source drives the turret 11 to rotate at a constant speed around the axis of the support column 42, causing the cleaning brush 13 and scraper 12 to move synchronously along the path of the skirt folds 31. The coaxial assembly of the turret 11 and support column 42 eliminates eccentric vibration, ensuring that the cleaning brush 13 always contacts the inner wall of the skirt along a predetermined trajectory.

[0038] The rigid frame constructed by the horizontal support plate 4 and the vertical support column 42 effectively suppresses the influence of the running vibration of the conveyor belt 3 on the cleaning assembly 1, and the coaxial rotation mode of the rotating frame 11 ensures that the cleaning brush 13 contacts the inner wall of the fold 31 along a preset trajectory.

[0039] like Figures 2 to 5 As shown, a slot 411 is provided on the support plate 4 along the front-to-back direction, and the support column 42 is slidably installed in the slot 411 along the front-to-back direction. A fastening bolt is provided between the support column 42 and the support plate 4, and the sliding block 22 is telescopically provided on the rotating frame 11. The sliding block 22 moves horizontally toward or away from the rotation axis of the rotating frame 11. A fastening bolt is provided between the sliding block 22 and the rotating frame 11, and the middle section of the drive shaft 21 is provided as a telescopic rod. A limiting ring 23 is provided on the sliding block 22 and the rotating frame 11 so that the two ends of the drive shaft 21 are always kept engaged.

[0040] The slot 411 is a strip-shaped opening extending along the length direction of the support plate 4, which can be implemented by a T-slot or dovetail slot structure, and is used to constrain the sliding direction of the support column 42. The fastening bolts between the support column 42 and the support plate 4 can adopt a locking nut with a handle, and the support column 42 is fixed by tightening the bolts. The sliding block 22 is telescopically arranged, that is, the sliding block 22 forms a telescopic connection with the rotating frame 11 through a slide rail or a guide rod mechanism, for example, a sleeve-type slide rail is used in conjunction with a positioning pin. The telescopic rod in the middle section of the drive shaft 21 can adopt a spline shaft or a sleeve-type coupling structure, which allows the axial length to change. The limiting ring 23 is an annular flange structure, such as a metal ring welded on the sliding block 22 and the rotating frame 11, which is used to limit the radial displacement of the drive shaft 21 during the telescopic process.

[0041] As the support column 42 slides along the slot 411, it adjusts the lateral position of the rotating frame 11 relative to the skirt of the conveyor belt 3. When the width of the conveyor belt 3 varies and the spacing between the skirts changes, the support column 42 can be adjusted by loosening the fastening bolts. The horizontal extension and retraction of the sliding block 22 can adjust the radial extension of the cleaning brush 13. When the spacing between the skirt pleats 31 increases, the sliding block 22 is extended outward to make the spacing between adjacent cleaning brushes 13 the same as the spacing between the pleats 31. The telescopic rod structure of the drive shaft 21 automatically compensates for the length change when the sliding block 22 moves. The limit ring 23 ensures that the bevel gears at both ends of the drive shaft 21 are always engaged, preventing transmission failure.

[0042] This structure achieves a precise fit between the cleaning brush 13 and the skirt pleats 31, resolving the problem of material residue caused by structural differences in the conveyor belt 3. For example, after replacing the conveyor belt 3, the cleaning effect can be restored by simply adjusting the position of the support column 42 and the extension of the sliding block 22, without having to replace the entire device, significantly reducing maintenance costs.

[0043] like Figures 4 to 6 As shown, the mounting part is a sliding block 22, and multiple sliding blocks 22 are arranged on the rotating frame 11 around the axis of the rotating frame 11. The cleaning brush 13 is rotatably arranged on the end of the sliding block 22 away from the rotating frame 11, wherein the sliding block 22 refers to a movable component for carrying the cleaning brush 13 and realizing position adjustment, which can be specifically realized by a metal block with a slide rail or a telescopic structure. The cleaning brush 13 is adapted to the different spacings of the skirt folds 31 of the conveyor belt 3 through the radial movement of the sliding block 22, and the spacing between adjacent cleaning brushes 13 is made the same as the spacing of the skirt folds 31 by utilizing the telescopic movement of the sliding block 22.

[0044] The drive shaft 21 is arranged in the sliding block 22. One end of the drive shaft 21 is engaged with the bevel gear on the support column 42, and the other end is engaged with the cleaning brush 13. Specifically, this can be achieved by setting bevel gears at both ends of telescopic sleeves of different diameters. The telescopic rod design in the middle section of the drive shaft 21 allows the gears at both ends to maintain the engagement state when the sliding block 22 moves.

[0045] Specifically, when the rotating frame 11 rotates around the axis of the support column 42, the bevel gear on the support column 42 drives the drive shaft 21 engaged therewith to rotate and cooperate, and the drive shaft 21 transmits power to the bevel gear at the end of the cleaning brush 13, causing the cleaning brush 13 to rotate around its own axis. Multiple sliding blocks 22 are evenly distributed around the axis of the rotating frame 11, driving the cleaning brush 13 to cover the entire area of ​​the skirt folds 31 of the conveyor belt 3. When the spacing between the skirt folds 31 of the conveyor belt 3 is different, the sliding block 22 slides radially along the rotating frame 11 to adjust the distance between adjacent cleaning brushes 13. The telescopic structure in the middle section of the drive shaft 21 compensates for the displacement of the sliding block 22, ensuring that the meshing surface of the bevel gear is always in an effective transmission state. During the rotation of the cleaning brush 13, the bristles on its surface penetrate deep into the folds 31 to remove residual materials. At the same time, the relative rotation of the scraper 12 and the cleaning brush 13 peels off the hard particles attached to the bristles.

[0046] Compared to existing technologies, traditional fixed cleaning devices cannot adapt to the positional changes of the pleats 31 on the conveyor belt 3 skirt, resulting in incomplete cleaning of some areas. The combined structure of the sliding block 22 and the drive shaft 21 enables adaptive adjustment of the position of the cleaning brush 13, expanding the cleaning coverage while maintaining stable transmission. The existing single drive shaft 21 structure is unable to provide independent power for multiple cleaning brushes 13. This solution adopts a split drive shaft 21 meshing with bevel gears, ensuring that each cleaning brush 13 receives uniform drive torque, avoiding the problem of uneven speed caused by differences in transmission distance.

[0047] like Figures 5 to 8 As shown, the scraper 12 is elastically hinged on the cleaning brush 13. A torsion spring 14 is provided at the hinge between the cleaning brush 13 and the scraper 12. The torsion spring 14 is sleeved on the cleaning brush 13. One end of the torsion spring 14 is connected to the cleaning brush 13, and the other end is connected to the scraper 12. The torsion spring 14 refers to an elastic element arranged around the axis of the cleaning brush 13 through a spiral structure. Specifically, it can be wound with high-carbon steel material, and its elastic deformation characteristics are used to transmit torque and buffer pressure. This feature provides elastic support for the scraper 12 relative to the cleaning brush 13 through the torsional deformation of the torsion spring 14, so that the scraper 12 can adaptively adjust when contacting the inner wall of the fold 31 of the skirt of the conveyor belt 3.

[0048] The scraper 12 is centrally symmetrical, and the portion between the scraper 12 and the rotating shaft of the cleaning brush 13 is hollowed out. When the scraper 12 and the cleaning brush 13 rotate relative to each other, the bristles of the cleaning brush 13 can pass through the hollow portion between the scraper 12 and the rotating shaft of the cleaning brush 13. The scraper 12 cleans the impurities on the bristles of the cleaning brush 13 to prevent the impurities from accumulating inside the bristles. This structure utilizes the relative rotational motion of the scraper 12 and the cleaning brush 13 to automatically peel off the attachments each time the bristles pass through the scraper 12, thereby maintaining the cleanliness of the bristles.

[0049] like Figures 2 to 5As shown, on the horizontal projection plane, the outer periphery of the cleaning brush 13 is located on the outside of the scraper 12, and the side wall of the scraper 12 close to the axis of the cleaning brush 13 is comb-shaped. The outer periphery of the cleaning brush 13 is located on the outside of the scraper 12, that is, the rotation trajectory of the cleaning brush 13 covers the edge position of the scraper 12 in a top view. This can be achieved by using cleaning brushes 13 of different diameters so that the cleaning brush 13 preferentially contacts the inner wall of the fold 31 of the skirt conveyor belt when rotating. The comb-shaped side wall of the scraper 12 close to the axis of the cleaning brush 13 means that the side of the scraper 12 facing the cleaning brush 13 has spaced protrusions and depressions. This can be achieved by machining equidistantly distributed rectangular grooves on the inner side of the scraper 12 so that the bristles on the cleaning brush 13 are located in the rectangular grooves on the scraper 12 when passing through the scraper 12.

[0050] like Figures 3 to 6 As shown, when cleaning the residual impurities in the folds 31, the cleaning brush 13 rotates around its own axis under the action of the driving shaft 21, and the cleaning brush 13 causes the scraper 12 to rotate synchronously with the cleaning brush 13 through the torsion spring 14. During the rotation of the cleaning brush 13, the bristles on the outer edge first clean the inner wall of the folds 31 of the skirt of the conveyor belt 3. When the scraper 12 abuts against the inner wall of the folds 31, the rotation resistance of the scraper 12 increases and the torsion spring 14 accumulates force. At this time, the impurities attached to the bristles continue to rotate with the cleaning brush 13 to the scraper 12 area. The comb-shaped side wall of the scraper 12 uses its alternatingly distributed edges to cut into the gaps between the bristles to scrape off the material remaining on the surface of the bristles, and the cleaned bristles re-contact the inner wall of the pleats 31 in the subsequent rotation. The torsion spring 14 continues to store force to rotate the scraper 12, and the scraper 12 cleans the impurities remaining on the inner wall of the pleats 31. After the scraper 12 detaches from the inner wall of the pleats 31, the resistance of the scraper 12 is reduced and the torsion spring 14 is quickly reset. When the scraper 12 rotates relative to the cleaning brush 13, the impurities wrapped in the bristles in the cleaning brush 13 are cleaned again.

[0051] The traditional cleaning device only uses a single scraper 12 or a rotating brush structure, which cannot effectively clean the complex shape of the inner wall of the skirt folds 31, and easily causes bristle wear or residue accumulation when cleaning hard lumps. Through the coordinated design of the scraper 12 and the cleaning brush 13, while achieving deep cleaning of the inner wall of the folds 31, the impurities of the cleaning brush 13 itself are simultaneously stripped away, forming a self-maintenance cleaning cycle.

[0052] like Figures 2 to 5As shown, as the cleaning brush 13 rotates, the scraper 12, supported by the elastic force of the torsion spring 14, contacts the inner surface of the pleats 31 on the skirt of the conveyor belt 3. When encountering hard residual material or when the pleats 31 change shape, the scraper 12 is pushed by a reverse force, causing the torsion spring 14 to twist and deform, causing the scraper 12 to rotate about the axis of the cleaning brush 13. During this process, the elastic restoring force of the torsion spring 14 continuously acts on the scraper 12, keeping it in constant contact with the inner surface of the pleats 31. Simultaneously, the relative rotation between the cleaning brush 13 and the scraper 12 causes the scraper 12 to continuously remove impurities adhering to the surface of the cleaning brush 13.

[0053] In conventional cleaning devices, the scraper 12 and cleaning brush 13 are often rigidly connected or mounted at a fixed angle, making them unable to adapt to the complex shape of the inner wall of the pleats 31 of the skirt of the conveyor belt 3. For example, some conventional devices use fixed scrapers, which can easily break when encountering hard material residue or cause the cleaning brush 13 to overload and shut down.

[0054] like Figures 2 to 6 As shown, the support plate 4 is provided with cleaning cotton 43. The cleaning cotton 43 is arranged on the right side of the support plate 4 in the front-to-back direction. The upper end of the cleaning cotton 43 maintains contact with the conveyor belt 3. The cleaning cotton 43 is a flexible cleaning component made of fiber material, specifically polyester fiber or sponge material. Its porous structure absorbs fine particles or dust remaining on the surface of the conveyor belt 3. The extension direction of the cleaning cotton 43 is consistent with the width direction of the conveyor belt 3, covering the entire lateral area of ​​the conveyor belt 3 running path to avoid cleaning blind spots. The cleaning cotton 43 is located on the right side of the support plate 4. The cleaning cotton 43 is set to the right side of the scraper 12 and the cleaning brush 13, so that the cleaning cotton 43 can be cleaned after the cleaning brush 13 and the scraper 12 have cleaned.

[0055] The cleaning cotton 43 is fixed by the support plate 4 and extends along the width direction of the conveyor belt 3, with its top in direct contact with the lower surface of the conveyor belt 3. When the conveyor belt 3 is running, the residual particles or dust are initially removed by the scraper 12 and the cleaning brush 13, and then continue to move to the area where the cleaning cotton 43 is located. It is adsorbed or wiped away through the fiber gaps of the cleaning cotton 43, and the cleaning cotton 43 cleans the uncleaned part in the middle of the conveyor belt 3. Because the cleaning cotton 43 covers the entire width of the conveyor belt 3 and is located downstream in the running direction, the cleaning cotton 43 maintains a stable contact pressure when the conveyor belt 3 continues to move, thereby improving cleaning efficiency. The flexible material of the cleaning cotton 43 enables it to adapt to the slight undulations on the surface of the conveyor belt 3, so that the cleaning cotton 43 can achieve a better cleaning effect.

[0056] like Figures 2 to 4As shown, the front and rear sides of the cleaning cotton 43 abut against the skirt of the conveyor belt 3, and the front and rear sides of the cleaning cotton 43 abut against the opposite sides of the skirt on both sides. The skirt of the conveyor belt 3 is an annular raised structure arranged along the edges of both sides of the conveyor belt 3. It can be specifically realized by molding vulcanized rubber or polyurethane material. Its height can be set to the range of 50 mm to 150 mm to prevent material from overflowing during transportation. When the cleaning cotton 43 is cleaning, the cleaning cotton 43 cleans the skirt part it abuts during the movement of the conveyor belt 3.

[0057] The cleaning pads 43 are mounted on the support plate 4, with their front and rear edges designed to physically contact the skirts of the conveyor belt 3. When the conveyor belt 3 is in operation, relative sliding friction occurs between the outer surface of the skirts and the cleaning pads 43. Leveraging the elastic material's deformability, the sides of the cleaning pads 43 continuously conform to the raised portions on the inner side of the skirts. During this process, the fibers of the cleaning pads 43 scrape away any remaining material on the raised portions of the skirts, causing them to be peeled off. The resulting debris is temporarily absorbed by the porous structure of the cleaning pads 43, preventing secondary contamination of the conveyor belt 3 surface.

[0058] In some specific embodiments, the installation position of the cleaning cotton 43 can be adjusted by sliding it back and forth on the support plate 4 through limiting bolts to ensure that its edges on both sides always maintain a predetermined contact pressure with the skirt, and the length direction is arranged perpendicular to the running direction of the conveyor belt 3. The elastic abutment structure is used to achieve continuous cleaning of the raised parts of the skirt, and adaptive adjustment can be completed without the need for a complex transmission mechanism.

[0059] like Figures 2 to 6 As shown, a discharge port 44 is provided on the support plate 4 , and the discharge port 44 is arranged along the front-to-back direction. The right end of the discharge port 44 is in close contact with the left end of the cleaning cotton 43 , and impurities on the left end of the cleaning cotton 43 can be directly discharged from the discharge port 44 .

[0060] The discharge port 44 refers to a through opening opened along the length direction of the support plate 4, which can be specifically realized by a rectangular or trapezoidal groove structure, and its right end is aligned with the left edge of the cleaning cotton 43 to form a continuous discharge channel.

[0061] A discharge port 44 is formed on the support plate 4, extending along the direction of travel of the conveyor belt 3. During the cleaning process, bulk material removed from the skirt pleats 31 by the scraper 12 falls onto the support plate 4 and is discharged through the discharge port 44. Powdery impurities, removed by the cleaning cotton 43 as it wipes the surface of the conveyor belt 3, slide along the surface of the cleaning cotton 43 to the right end of the discharge port 44. Because the right end of the discharge port 44 is in close contact with the left end of the cleaning cotton 43, the impurities fall vertically through the discharge port 44 under the action of gravity to an external collection device, preventing them from accumulating on the surface of the support plate 4 and forming a secondary accumulation.

[0062] In some specific embodiments, an inclined material guide plate is provided on the lower side of the discharge port 44. The inclined material guide plate is provided at the lower right end of the discharge port 44. The material guide plate guides the material discharged from the discharge port 44 so that the material is discharged along the direction of the material guide plate, making the discharge of the material more concentrated and convenient for collection.

[0063] Working principle: when the conveyor belt 3 is working, the conveyor belt 3 transports the material from the right end to the left end, and the material is unloaded from the left end of the conveyor belt 3. When the conveyor belt 3 turns to the lower side and moves to the cleaning component 1, the driving source causes the rotating frame 11 to rotate. The cleaning brush 13 provided on the rotating frame 11 has the same rotation speed as the rotation speed of the rotating frame 11 and the conveyor belt 3. The cleaning brush 13 enters the pleats 31 of the skirt in turn. When the rotating frame 11 rotates, the driving shaft 21 causes the cleaning brush 13 to rotate around its own axis. The cleaning brush 13 cleans the inner wall of the pleats 31, and the scraper 12 rotates with the cleaning brush 13 under the action of the torsion spring 14. The scraper 12 abuts against the inner wall of the pleats 31, and the rotation resistance of the scraper 12 increases and the torsion spring 14 stores force, which continuously provides greater power to the scraper 12, so that the scraper 12 scrapes off the impurities on the inner wall of the pleats 31.

[0064] During the process of the torsion spring 14 storing force, the scraper 12 and the cleaning brush 13 rotate relative to each other, and the bristles of the cleaning brush 13 pass through the comb teeth side of the scraper 12, and the scraper 12 is used to clean the impurities in the bristles, so that the cleaning brush 13 maintains a good cleaning effect;

[0065] The cleaning cotton 43 located on the right side of the support plate 4 cleans the part between the two skirts of the conveyor belt 3. At the same time, the cleaning cotton 43 cleans the protruding positions close to the skirts on both sides. The cleaned impurities are discharged from the discharge port 44 set on the support plate 4 and collected after passing through the guide plate.

[0066] A belt conveyor equipped with the aforementioned cleaning device. When the belt conveyor with a skirt is in operation, a cleaning brush 13 mounted on a rotating frame 11 orbits into the skirt pleats 31 while simultaneously rotating, causing the bristles to penetrate deep into the gaps within the pleats 31 for rotary cleaning. The scraper 12, elastically hinged, abuts the inner wall of the pleats 31. As the cleaning brush 13 rotates, its comb-like edges remove any hard material remaining between the bristles.

[0067] Through the composite motion design of the rotating frame 11 and the cleaning brush 13, the cleaning component can continuously penetrate into different folds 31, solving the core problem of the existing technology that is difficult to clean effectively.

[0068] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A belt conveyor self-cleaning device comprising: A cleaning assembly provided on a belt conveyor, characterized in that the cleaning assembly comprises: two rotating racks, a scraper, a cleaning brush and a transmission assembly; The two rotating frames are arranged on the conveyor belt, and the two rotating frames are both located at the lower side of the conveyor belt. The two rotating frames are respectively arranged at the front and rear edges of the conveyor belt. A plurality of cleaning brushes are arranged around the axis of the rotating frame. The linear speed of the cleaning brush is the same as the speed of rotation of the conveyor belt. A mounting part is provided on the end of the rotating frame away from its own axis. The cleaning brush rotates around its own axis, and the scraper is arranged on the cleaning brush and rotates around the axis of the cleaning brush. When the cleaning brush rotates, the scraper abuts against the inner wall of the pleat. When the rotating frame rotates, the transmission assembly drives the cleaning brush to rotate around its own axis. The cleaning brush and the scraper are elastically hinged, and a torsion spring is provided at the hinge. The torsion spring is sleeved on the cleaning brush, one end of the torsion spring is connected to the cleaning brush, and the other end is connected to the scraper. During cleaning, the cleaning brush rotates to clean the inner wall of the folds, the scraper abuts against the inner wall of the folds to clean, the scraper and the cleaning brush rotate relatively, and the scraper scrapes off impurities on the cleaning brush.

2. A belt conveyor self-cleaning device according to claim 1, characterized in that: On the horizontal projection plane, the outer periphery of the cleaning brush is located on the outside of the scraper, and the side wall of the scraper close to the axis of the cleaning brush is comb-shaped.

3. A belt conveyor self-cleaning device according to claim 1, characterized in that: A horizontal support plate is provided at the lower side of the conveyor belt, a hollow support column is vertically provided on the support plate, a rotating frame is coaxially rotated on the support column, and a driving source is provided at the lower end of the support column, which causes the rotating frame to rotate around the axis.

4. A belt conveyor self-cleaning device according to claim 3, characterized in that: The transmission assembly includes multiple drive shafts, and the mounting parts are sliding blocks. The multiple sliding blocks are arranged on the rotating frame around the axis of the rotating frame. The cleaning brush is rotatably arranged on the end of the sliding block away from the rotating frame. The drive shaft is arranged in the sliding block. One end of the drive shaft is engaged with the bevel gear on the support column, and the other end is engaged with the bevel gear of the cleaning brush.

5. A belt conveyor self-cleaning device according to claim 4, characterized in that: A slot is provided on the upper edge of the support plate in the front-to-back direction, and the support column is installed in the slot along the front-to-back sliding direction. A fastening bolt is provided between the support column and the support plate. The sliding block is telescopically arranged on the rotating frame, and the sliding block approaches or moves away from the rotating frame horizontally. A fastening bolt is provided between the sliding block and the rotating frame. The middle section of the drive shaft is provided as a telescopic rod, and a limiting ring is provided on the sliding block and the rotating frame to keep the two ends of the drive shaft always engaged.

6. A belt conveyor self-cleaning device according to claim 3, characterized in that: The support plate is provided with cleaning cotton, which is arranged on the right side of the support plate along the front-back direction, and the upper end of the cleaning cotton is kept in contact with the conveyor belt.

7. A belt conveyor self-cleaning device according to claim 6, characterized in that: The supporting plate is provided with a feeding opening which is arranged along the front-back direction, and the right end of the feeding opening is in close contact with the left end of the cleaning cotton.

8. A belt conveyor self-cleaning device according to claim 6, characterized in that: The front and rear sides of the cleaning cotton abut against the skirt of the conveyor belt.

9. A belt conveyor, characterized in that: The belt conveyor is equipped with the cleaning assembly according to any one of claims 1 to 8.

Images