Conveyor belt cleaning device capable of passively releasing cleaning agent in situ and use method

Abstract

The invention relates to the field of conveyors, and particularly discloses a conveyor belt cleaning device capable of passively releasing a cleaning agent in situ and a using method. The cleaning mechanism, the washing mechanism and the drying mechanism are arranged on the outer side of the descending section of the conveying belt and are sequentially arranged in the running direction of the conveying belt. Wherein the tensioning vibration mechanism is used for driving the conveying belt to vibrate or tensioning the conveying belt; the cleaning mechanism comprises a cleaning roller and a first lifting assembly, the cleaning roller comprises a roller body and a plurality of hollow roller bristles, a driven valve is arranged at the liquid outlet end of the hollow roller bristles, and when the first lifting assembly drives the cleaning roller to ascend till the hollow roller bristles are extruded by the lower end face of the conveying belt to be bent, the driven valve is opened, and the cleaning agent stored in the hollow roller bristles is released. According to the cleaning device, the cleaning agent can be passively released, so that waste of the cleaning agent is reduced, meanwhile, the contact effect of the cleaning roller and the conveying belt is improved through the tensioning vibration mechanism, and the cleaning efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of conveyors, and in particular to a conveyor belt cleaning device that passively releases a cleaning agent in-situ and a usage method thereof. Background Art

[0002] Belt conveyors use conveyor belts for material transportation and are widely used in fields such as material handling, raw material transportation in food or pharmaceutical processing, etc. Usually, after a period of use, dust and other debris will adhere to the outer side of the conveyor belt. If the adhered debris cannot be effectively cleaned, it is likely to contaminate the materials transported by the conveyor belt. Therefore, it is necessary to clean the conveyor belt.

[0003] Currently, common cleaning devices for conveyor belts include brush cleaning devices, scraper cleaning devices, alloy rubber cleaning devices, etc. Among them, the brush cleaning device is the most widely used. It sets a cleaning roller under the conveyor belt and in contact with it, and realizes the cleaning function through the rotation of the cleaning roller. After long-term use, traditional conveyor belts usually become loose, resulting in poor contact between the cleaning roller and the lower side of the conveyor belt and affecting the cleaning effect. In addition, during the process of using the cleaning roller to clean the conveyor belt, there is a lack of an efficient cleaning agent spraying or application method, which easily causes waste of the cleaning agent. Summary of the Invention

[0004] In order to improve the problems of the cleaning effect affected by the loosening of the conveyor belt and the waste of the cleaning agent, the present application provides a conveyor belt cleaning device that passively releases a cleaning agent in-situ and a usage method thereof.

[0005] The conveyor belt cleaning device that passively releases a cleaning agent in-situ provided by the present application adopts the following technical solutions: A conveyor belt cleaning device that passively releases a cleaning agent in-situ, comprising a tensioning and vibrating mechanism arranged on the inner side of the downward section of the conveyor belt, and a cleaning mechanism, a flushing mechanism, and a drying mechanism arranged on the outer side of the downward section of the conveyor belt and arranged in sequence along the running direction of the conveyor belt; The tensioning and vibrating mechanism is used to drive the conveyor belt to vibrate or tension the conveyor belt; The cleaning mechanism includes a cleaning roller assembly, a conveying assembly, a power assembly, and a first lifting assembly. Among them, the cleaning roller assembly includes a rotatably arranged cleaning roller, the cleaning roller includes a roller body and a plurality of hollow roller hairs fixedly connected to the outer periphery of the roller body, and a receiving cavity for accommodating a cleaning agent is arranged inside the roller body; the hollow roller hairs are elastic, one end of which communicates with the receiving cavity, and the other end is provided with a passive valve; the power assembly is used to drive the cleaning roller to rotate, and the conveying assembly is used to convey the cleaning agent into the receiving cavity; the first lifting assembly is used to drive the cleaning roller assembly to lift. When the cleaning roller assembly rises, the hollow roller hairs are bent by the extrusion of the lower end surface of the conveyor belt, and the liquid pressure of the cleaning agent in the hollow roller hairs can drive the passive valve to open, releasing the cleaning agent stored in the hollow roller hairs. The flushing mechanism is used to flush the conveyor belt; the drying mechanism is used to dry the conveyor belt.

[0006] This application uses hollow roller hairs to store a small amount of cleaning agent. When the hollow roller hairs are in contact with the lower end surface of the conveyor belt, they are bent by extrusion. The liquid pressure of the cleaning agent in the hollow roller hairs drives the passive valve to open, realizing the release of the cleaning agent. Compared with the traditional method of spraying the cleaning agent over a large area, this application can achieve rapid and efficient in-situ passive release of the cleaning agent, directly acting on the conveyor belt, effectively reducing the waste of the cleaning agent.

[0007] In addition, by adjusting the height of the cleaning roller assembly through the first lifting assembly, the extrusion degree of the conveyor belt on the hollow roller hairs can be adjusted, thereby adjusting the bending degree of the hollow roller hairs, and further adjusting the release amount of the cleaning agent. Specifically, the closer the distance between the roller body and the lower end surface of the conveyor belt, the greater the extrusion degree of the conveyor belt on the hollow roller hairs, the greater the bending degree of the hollow roller hairs, and the more cleaning agent is released; the farther the distance between the roller body and the lower end surface of the conveyor belt, the smaller the extrusion degree of the conveyor belt on the hollow roller hairs, the smaller the bending degree of the hollow roller hairs, and the less cleaning agent is released.

[0008] Further, the passive valve includes at least three sector valve plates. The arc sides of the sector valve plates are fixedly connected to the inner side wall of the hollow roller hairs, and a plurality of the sector valve plates are spliced into a circle to cover the liquid outlet end of the hollow roller hairs; the sector valve plates are elastic.

[0009] When the hollow roller hairs are filled with the cleaning agent and the hollow roller hairs are not externally extruded, a plurality of sector valve plates are spliced into a circle to cover the liquid outlet end of the hollow roller hairs, preventing the cleaning agent in the hollow roller hairs from flowing out. At the same time, due to the certain viscosity and surface tension of the cleaning agent, the cleaning agent will not overflow from the liquid outlet end of the hollow roller hairs. Further, when the hollow roller hairs are not externally extruded, the centrifugal force generated by the rotation of the roller body is not sufficient to throw the cleaning agent out of the hollow roller hairs.

[0010] When the hollow roller hairs are filled with a cleaning agent and are externally squeezed, the hollow roller hairs bend, increasing the pressure of the cleaning agent stored therein. The liquid pressure inside the hollow roller hairs drives multiple sector valve plates to elastically deform and open outwards, opening the passive valve and realizing the passive release of the cleaning agent. When the external force squeezing the hollow roller hairs is removed, the hollow roller hairs return from bending to straight under the action of their own deformation force, the liquid pressure inside them decreases, and the multiple sector valve plates reset under the action of their own deformation force, covering the liquid outlet end of the hollow roller hairs.

[0011] Further, the conveying assembly includes a liquid storage tank for storing the cleaning agent. One side of the liquid storage tank is communicated with the accommodating cavity, and the other side is connected with a pressure stabilizing air pump.

[0012] Pressurizing the liquid storage tank through the pressure stabilizing air pump can make the cleaning agent in the liquid storage tank enter the accommodating cavity.

[0013] Further, the conveying assembly includes a liquid storage tank for storing the cleaning agent. The liquid storage tank is communicated with the accommodating cavity, and the position of the liquid storage tank is higher than that of the roller body.

[0014] Using the gravity of the cleaning agent itself can also drive the cleaning agent to enter the accommodating cavity from the liquid storage tank.

[0015] Further, the cleaning roller assembly further includes a fixing part. The roller body is rotatably connected to the fixing part. The fixing part is connected to the conveying assembly. The roller body is connected to the power assembly. A sealing structure is arranged between the fixing part and the roller body.

[0016] Further, the roller body includes a hollow column shell. The internal space of the hollow column shell is the accommodating cavity. The fixing part includes a sealing connection head. The sealing structure includes a first sealing part arranged on the inner peripheral side of one end of the hollow column shell and a second sealing part arranged on the outer peripheral side of the sealing connection head. The first sealing part and the second sealing part are in sealing cooperation; a buffer flow channel is axially penetrated through the fixing part for communicating the accommodating cavity and the conveying assembly.

[0017] Through the sealing cooperation between the first sealing part and the second sealing part, the rotational sealing connection between the hollow column shell and the sealing connection head is realized.

[0018] Further, a number of solid roller hairs are further arranged on the outer peripheral side of the roller body. The solid roller hairs and the hollow roller hairs are alternately distributed on the outer periphery of the roller body.

[0019] The quantity ratio of the solid roller hairs and the hollow roller hairs can be adjusted according to the degree of dirtiness of the conveyor belt.

[0020] Further, the tensioning vibration mechanism includes a sliding frame vertically arranged inside the conveyor belt and a vibration assembly for driving the sliding frame to reciprocate vertically. A tensioning roller is rotatably arranged on the sliding frame, and the tensioning roller abuts against the inner side of the conveyor belt.

[0021] Further, a horizontal chute is arranged on the sliding frame. The vibration assembly includes a crankshaft that reciprocally swings around a fixed point and a driving member for driving the crankshaft to swing. The free end of the crankshaft is slidably arranged in the chute.

[0022] In the vibration mode, the driving member drives the crankshaft to rotate. The free end of the crankshaft reciprocally slides along the chute, thereby driving the sliding frame to reciprocate vertically, and further enabling the tensioning roller to drive the conveyor belt to vibrate vertically. In the tensioning mode, the driving member drives the crankshaft to rotate downward to be vertical, and the sliding frame reaches the maximum displacement in the vertical direction, and the tensioning roller tensions the conveyor belt. When cleaning the conveyor belt, the vibration mode or the tensioning mode can be adopted according to actual needs to compensate for the looseness of the conveyor belt within a certain range, so as to improve the contact effect between the cleaning roller and the conveyor belt, thereby improving the cleaning efficiency.

[0023] The present application also provides a usage method of a conveyor belt cleaning device for in-situ passive release of a cleaning agent, including the following steps: The conveyor belt runs, and the cleaning roller rotates reversely relative to the conveyor belt; The cleaning agent is conveyed into the accommodating cavity of the roller body through the conveying assembly, so that the cleaning agent enters and is stored in the hollow roller hairs from the accommodating cavity. The cleaning roller assembly is driven to rise by the first lifting assembly until the hollow roller hairs are bent under the extrusion of the lower end surface of the conveyor belt, and the liquid pressure of the cleaning agent in the hollow roller hairs drives the passive valve to open, releasing the cleaning agent stored in the hollow roller hairs for cleaning the conveyor belt; During the cleaning process of the conveyor belt, the conveyor belt is driven to vibrate or tensioned by the tensioning vibration mechanism to improve the contact effect between the cleaning roller and the conveyor belt; The conveyor belt is rinsed and dried by the rinsing mechanism and the drying mechanism in sequence.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. Compared with the traditional method of spraying the cleaning agent over a large area, the present application can realize the rapid and efficient in-situ passive release of the cleaning agent, directly acting on the conveyor belt, effectively reducing the waste of the cleaning agent; 2. By setting the tensioning vibration mechanism and adopting the vibration mode or the tensioning mode, the looseness of the conveyor belt is compensated within a certain range to improve the contact effect between the cleaning roller and the conveyor belt, thereby improving the cleaning efficiency; 3. The conveyor belt is rinsed and dried by the rinsing mechanism and the drying mechanism in sequence after cleaning, so that the conveyor belt can quickly return to a usable state; 4. By adjusting the quantity ratio of the solid roller bristles and the hollow roller bristles, the rotational speeds of the conveyor belt and the cleaning roller, and the distance between the cleaning roller and the conveyor belt, it is possible to be applicable to the cleaning of conveyor belts with different degrees of fouling. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 is a schematic diagram mainly used to show the structure of the frame in an embodiment of the present application; Figure 3 is a schematic diagram mainly used to show the structure of the transmission and conveying mechanism in an embodiment of the present application; Figure 4 is a schematic diagram mainly used to show the structures of the cleaning mechanism and the tensioning and vibrating mechanism in an embodiment of the present application; Figure 5 is a schematic diagram of the structure of the first lifting assembly in an embodiment of the present application; Figure 6 is a schematic diagram of the structure of the cleaning roller assembly in an embodiment of the present application; Figure 7 is a schematic diagram of the structure of the cleaning roller assembly from another angle in an embodiment of the present application; Figure 8 is a schematic diagram of the structure of the liquid storage tank in an embodiment of the present application; Figure 9 is an overall schematic diagram of the cleaning roller in an embodiment of the present application; Figure 10 is a cross-sectional schematic diagram of the cleaning roller in an embodiment of the present application; Figure 11 is a schematic diagram of the structure and working principle of the passive valve in an embodiment of the present application; Figure 12 is a schematic diagram of the structure of the fixing part of the cleaning roller assembly in an embodiment of the present application, where (A) is the overall structure schematic diagram and (B) is the cross-sectional view; Figure 13 is a schematic diagram of the structure of the tensioning and vibrating mechanism in an embodiment of the present application; Figure 14 is a schematic diagram of the structure of the sliding frame in the tensioning and vibrating mechanism in an embodiment of the present application; Figure 15 is a schematic diagram of the structure of the flushing mechanism in an embodiment of the present application; Figure 16 is a schematic diagram of the structure of the drying mechanism in an embodiment of the present application; Figure 17 is a schematic diagram of the structure of the scraper assembly in an embodiment of the present application; Figure 18 is a schematic diagram of the structure of the drying roller assembly in an embodiment of the present application.

[0026] Reference numerals: 1. Pulley outrigger; 2. Frame; 20. Side wall plate; 21. Bottom plate; 22. First support plate; 22a. First guide rod sliding sleeve; 23. Second support plate; 23a. Second guide rod sliding sleeve; 24. Wing nut 3. Cleaning mechanism 30. Cleaning roller assembly; 31. Cleaning roller; 310. Roller body; 310a. Rotating shaft; 310b. Hollow column shell; 310c. Solid roller hair; 310d. Hollow roller hair; 310f. First sealing part; 311. Fixed part; 311a. External thread head; 311b. Fixed pin hole; 311c. Buffer flow channel; 311d. Fixed shaft; 311e. Second sealing part; 311f. Sealing connection head; 312. Passive valve; 312a. Sector valve plate; 301. First bearing bracket; 302. Fixed bracket; 303. Fixed pin; 304. First support 32. Conveying assembly; 320. Voltage stabilizing air pump; 321. First conveying hose; 322. Liquid storage tank; 32201. Tank shell; 32202. Piston; 32203. Air chamber; 32204. Cleaner chamber; 32205. Air inlet; 32206. Liquid outlet; 32207. Liquid replenishing port; 323. Second conveying hose; 324. Internal thread joint 33. Power assembly; 330. First motor; 331. First motor bracket; 332. Coupling; 333. Reducer; 334. Large synchronous belt pulley; 335. Small synchronous belt pulley; 336. Synchronous belt 34. First lifting assembly; 340. Second motor; 341. Flange; 342. Threaded rod; 35. First lifting platform; 35a. Lifting guide rod; 35b. Support spring; 36. Internal thread bracket; 36a. Internal thread disc; 36b. Bracket rod 4. Tensioning and vibrating mechanism; 40. Third motor; 41. Third motor bracket; 42. Crankshaft; 43. Sliding frame; 43a. Chute; 43b. Tensioning roller bracket; 43c. Slide block; 44. Guide rail; 45. Tensioning roller 5. Drying mechanism; 50. Scraper assembly; 501. Support platform; 502. Torsion spring; 503. Scraper; 503a. Fixed platform; 51. Drying roller assembly; 510. Second support; 511. Second bearing bracket; 512. Main drying roller; 512a. Wide strip roller hair; 513. Sub-drying roller; 513a. Narrow strip roller hair; 52. Hot air blower; 53. Second lifting assembly; 54. Second lifting platform 6. Transmission and conveying mechanism; 60. Transmission roller; 61. Support roller; 62. Conveyor belt; 63. Support grid; 64. Support rod; 65. Conveyor belt power assembly; 65a. Fourth motor; 65b. Reduction box; 65c. First sprocket; 65d. Second sprocket; 65e. Chain; 65f. Bearing seat; 65g. Protection box 7. Main control box 8. Flushing mechanism; 8a. Water tank; 8b. Third conveying hose; 8c. Water pump; 8d. Fourth conveying hose; 8e. Flushing nozzle Detailed implementation mode

[0027] The following further elaborates on this application in conjunction with the attached Figure 1-18 drawings for a more detailed description

[0028] The embodiment of this application discloses a conveyor belt cleaning device for in-situ passive release of cleaning agent, which is used to clean the conveyor belt of a belt conveyor. Referring to Figure 1 and Figure 2 , the belt conveyor includes a frame 2 and a conveyor belt 62 arranged on the frame 2. A plurality of pulley legs 1 for support are fixedly arranged at the lower part of the frame 2, and a transmission and conveying mechanism 6 for driving the conveyor belt 62 to operate is arranged on the frame 2. A bottom plate 21 is fixedly arranged at the lower part of the frame 2, and side wall plates 20 are fixedly arranged on both sides of the conveyor belt 62 of the frame 2.

[0029] Referring to Figure 1 and Figure 2 , a conveyor belt cleaning device for in-situ passive release of cleaning agent disclosed in this embodiment includes a tensioning and vibrating mechanism 4 arranged on the inner side of the downward running section of the conveyor belt 62 and a cleaning mechanism 3, a flushing mechanism 8 and a drying mechanism 5 arranged on the outer side of the downward running section of the conveyor belt 62 and arranged in sequence along the running direction of the conveyor belt 62.

[0030] Referring to Figure 2 and Figure 3 , a support grid 63 for supporting the conveyor belt 62 and a plurality of support rods 64 are fixedly arranged on the frame 2. The transmission and conveying mechanism 6 includes a driving roller 60 and a supporting roller 61 rotatably arranged on the frame 2, and also includes a conveyor belt power assembly 65 for driving the driving roller 60 to rotate. Among them, the driving roller 60 is rotatably arranged on the frame 2 through a bearing seat 65f, the driving roller 60 is used to drive the conveyor belt 62 to operate, and the supporting roller 61 is used to support the conveyor belt 62.

[0031] Specifically, referring to Figure 2 and Figure 3 , the conveyor belt power assembly 65 includes a first sprocket 65c, a second sprocket 65d, a chain 65e, a fourth motor 65a and a speed reducer 65b. Among them, the fourth motor 65a is fixedly arranged on the frame 2, the speed reducer 65b is installed at the output end of the fourth motor 65a, the output end of the speed reducer 65b is connected to the first sprocket 65c, the second sprocket 65d is coaxially fixed to the driving roller 60, and the chain 65e is tensioned and engaged between the first sprocket 65c and the second sprocket 65d. A protection box 65g is also fixedly arranged on the frame 2, and the protection box 65g covers the conveyor belt power assembly 65 to protect the conveyor belt power assembly 65.

[0032] The first sprocket 65c is driven to rotate by the fourth motor 65a, and the transmission roller 60 is driven by the chain 65e and the second sprocket 65d to rotate, driving the conveyor belt 62. The outer periphery of the transmission roller 60 may be provided with an anti-slip structure such as an anti-slip belt to avoid relative sliding between the transmission roller 60 and the conveyor belt 62 as much as possible, thereby improving the transmission efficiency.

[0033] Reference Figure 4 The cleaning mechanism 3 includes a cleaning roller assembly 30, a conveying assembly 32, a power assembly 33 and a first lifting assembly 34. Figure 6 and Figure 7 The cleaning roller assembly 30 includes a rotatably arranged cleaning roller 31, the cleaning roller 31 includes a roller body 310 and a plurality of roller hairs fixed to the outer periphery of the roller body 310, the roller body 310 is hollow, and a receiving chamber for receiving a cleaning agent is provided inside the roller body 310. The power assembly 33 is used to drive the cleaning roller 31 to rotate, the conveying assembly 32 is used to convey the cleaning agent into the receiving chamber, and the first lifting assembly 34 is used to drive the cleaning roller assembly 30 to rise and fall. The cleaning roller assembly 30 also includes a fixing portion 311, the roller body 310 is rotatably connected to the fixing portion 311, the fixing portion 311 is connected to the conveying assembly 32, and the roller body 310 is connected to the power assembly 33.

[0034] Reference Figure 2 , Figure 4 and Figure 5 The first support plate 22 is fixedly arranged on the bottom plate 21, and the four corners of the first support plate 22 can be fixed on the pulley leg 1 through butterfly nuts 24. A first lifting platform 35 for carrying the cleaning roller assembly 30 is lifted and lowered on the first support plate 22, and the first lifting assembly 34 is used to drive the first lifting platform 35 to rise and fall.

[0035] Reference Figure 5 The first lifting assembly 34 includes a second motor 340 fixedly arranged on the first support plate 22, and the output end of the second motor 340 is fixedly connected to a threaded rod 342 through a flange 341, and the threaded rod 342 is threadedly connected to an internal thread bracket 36. Specifically, the internal thread bracket 36 includes an internal thread disc 36a threadedly sleeved on the threaded rod 342 and a plurality of vertical bracket rods 36b fixedly connected to the upper end surface of the internal thread disc 36a, and one end of the bracket rod 36b away from the internal thread disc 36a is fixedly connected to the lower end surface of the first lifting platform 35.

[0036] In order to guide the lifting of the first lifting platform 35 in the vertical direction, refer to Figure 5, at the four corners of the lower end face of the first lifting platform 35, lifting guide rods 35a are fixedly connected respectively. The lifting guide rods 35a penetrate through the first support plate 22 in the vertical direction. A first guide rod sliding sleeve 22a is fixedly arranged on the first support plate 22 for the lifting guide rods 35a to pass through. In order to buffer the lifting of the first lifting platform 35, a support spring 35b is sleeved outside the lifting guide rods 35a. The lower end of the support spring 35b abuts against the upper end face of the first support plate 22, and the upper end of the support spring 35b abuts against the lower end face of the first lifting platform 35.

[0037] By driving the threaded rod 342 to rotate through the second motor 340, the threaded rod 342 is in threaded cooperation with the internally threaded bracket 36. Under the guiding action of the lifting guide rods 35a, the first lifting platform 35 is driven to lift and lower in the vertical direction.

[0038] Refer to Figure 6 and Figure 7 , two first supports 304 are fixedly arranged on the first lifting platform 35. A fixed bracket 302 is fixedly arranged on one of the first supports 304, and a first bearing bracket 301 is fixedly arranged on the other first support 304; the roller body 310 is rotatably connected to the first bearing bracket 301, and the fixing part 311 is fixedly connected to the fixed bracket 302. The power assembly 33 is used to drive the roller body 310 to rotate.

[0039] Specifically, refer to Figure 6 , the power assembly 33 includes a first motor 330, a speed reducer 333, a large synchronous pulley 334, a small synchronous pulley 335 and a synchronous belt 336. Among them, the first motor 330 is installed on the first lifting platform 35 through a first motor bracket 331. The output end of the first motor 330 is connected to the speed reducer 333 through a coupling 332. The output end of the speed reducer 333 is connected to the large synchronous pulley 334. The small synchronous pulley 335 is coaxially and fixedly connected to the roller body 310. The synchronous belt 336 is tensioned and wrapped around the large synchronous pulley 334 and the small synchronous pulley 335.

[0040] By driving the large synchronous pulley 334 to rotate through the first motor 330, under the transmission of the synchronous belt 336 and the small synchronous pulley 335, the roller body 310 is driven to rotate.

[0041] Refer to Figure 6 and Figure 7 , the conveying assembly 32 includes a liquid storage tank 322 for storing the cleaning agent. One side of the liquid storage tank 322 is communicated with the accommodating cavity inside the roller body 310, and the other side is connected with a voltage stabilizing air pump 320. Specifically, refer to Figure 8, the liquid storage tank 322 includes a tank housing 32201. A piston 32202 is slidably disposed in the tank housing 32201. The piston 32202 divides the internal space of the liquid storage tank 322 into an air chamber 32203 and a cleaning agent chamber 32204 for accommodating the cleaning agent. The tank housing 32201 is provided with an air inlet 32205 on one side of the air chamber 32203, and a liquid outlet 32206 and a liquid replenishing port 32207 on one side of the cleaning agent chamber 32204. The liquid replenishing port 32207 is used to replenish the cleaning agent into the liquid storage tank 322.

[0042] Referring to Figure 6 , Figure 7 and Figure 8 , the air outlet end of the pressure stabilizing air pump 320 is connected to the air inlet 32205 of the liquid storage tank 322 through a first delivery hose 321, and the liquid outlet 32206 of the liquid storage tank 322 communicates with the accommodating chamber in the roller body 310 through a second delivery hose 323. By pressurizing the air chamber 32203 of the liquid storage tank 322 through the pressure stabilizing air pump 320, the piston 32202 in the liquid storage tank 322 slides ( Figure 8 the horizontal arrow direction in the air chamber 32203 indicates the sliding direction of the piston 32202), and the cleaning agent in the cleaning agent chamber 32204 of the liquid storage tank 322 is pushed to enter the accommodating chamber in the roller body 310 through the second delivery hose 323.

[0043] In another feasible embodiment, the conveying assembly 32 includes a liquid storage tank 322 for storing the cleaning agent. The liquid storage tank 322 communicates with the accommodating chamber, and the position of the liquid storage tank 322 is higher than that of the roller body 310. By utilizing the gravity of the cleaning agent itself, the cleaning agent can be driven to enter the accommodating chamber in the roller body 310 from the liquid storage tank 322.

[0044] Referring to Figure 9 and Figure 10 , the roller body 310 includes a hollow column shell 310b, and the internal space of the hollow column shell 310b is the accommodating chamber. The hollow column shell 310b is coaxially and fixedly connected to the small synchronous pulley 335 in the power assembly 33 through a rotating shaft 310a at one end thereof.

[0045] Referring to Figure 9 and Figure 10 , the roller hairs on the outer periphery of the roller body 310 include a plurality of hollow roller hairs 310d and a plurality of solid roller hairs 310c arranged in columns, and the hollow roller hairs 310d and the solid roller hairs 310c are alternately distributed on the outer periphery of the roller body 310. The quantity ratio of the solid roller hairs 310c and the hollow roller hairs 310d can be adjusted according to the soiling degree of the conveyor belt 62.

[0046] Referring to Figure 9 and Figure 10, one end of the hollow roller hair 310d communicates with the accommodation cavity inside the hollow cylindrical shell 310b, and a passive valve 312 is provided at the other end of the hollow roller hair 310d. Refer to Figure 11 , the passive valve 312 includes at least three sector valve plates 312a, and it can be set to three, four, five or six. The arc side of the sector valve plate 312a is fixedly connected to the inner side wall of the hollow roller hair 310d, and multiple sector valve plates 312a are closely spliced into a circle to cover the liquid outlet end of the hollow roller hair 310d.

[0047] The hollow roller hair 310d, the solid roller hair 310c and the sector valve plate 312a are all elastic. Engineering plastics such as wear-resistant and elastic polypropylene (PP), polyvinyl chloride (PVC), high-density polyethylene (HDPE), etc. or nitrile rubber (NBR) can be selected as raw materials, and they are processed and manufactured by injection molding or 3D printing.

[0048] The cleaning agent in the liquid storage tank 322 is injected into the accommodation cavity in the roller body 310 through the constant-pressure air pump 320 until the accommodation cavity is filled with the cleaning agent; the constant-pressure air pump 320 continues to pressurize the liquid storage tank 322, so that the cleaning agent in the accommodation cavity enters the hollow roller hair 310d. During this process, the air pressure in the hollow roller hair 310d drives multiple sector valve plates 312a to undergo slight elastic deformation and open outward, so that the passive valve 312 is opened, and the air in the hollow roller hair 310d is discharged until the hollow roller hair 310d is filled with the cleaning agent. Subsequently, the air pressure of the constant-pressure air pump 320 is reduced, so that the internal pressure of the hollow roller hair 310d is reduced, and multiple sector valve plates 312a reset under the action of their own deformation force and cover the liquid outlet end of the hollow roller hair 310d.

[0049] When the hollow roller hair 310d is filled with the cleaning agent and the hollow roller hair 310d is not externally squeezed, multiple sector valve plates 312a are closely spliced into a circle to cover the liquid outlet end of the hollow roller hair 310d, hindering the cleaning agent in the hollow roller hair 310d from flowing out. At the same time, due to the certain viscosity and surface tension of the cleaning agent, the cleaning agent will not overflow from the liquid outlet end of the hollow roller hair 310d. Further, when the hollow roller hair 310d is not externally squeezed, the centrifugal force generated by the rotation of the roller body 310 is not enough to throw the cleaning agent out of the hollow roller hair 310d.

[0050] As Figure 11As shown, when the hollow roller brush 310d is filled with a cleaning agent and is externally squeezed, the hollow roller brush 310d bends, increasing the pressure of the cleaning agent stored therein. The liquid pressure inside the hollow roller brush 310d causes multiple sector valve plates 312a to elastically deform and open outwards, opening the passive valve 312 and realizing the passive release of the cleaning agent. When the external force squeezing the hollow roller brush 310d is removed, the hollow roller brush 310d returns from bending to straight under the action of its own deformation force, the liquid pressure inside it decreases, and the multiple sector valve plates 312a reset under the action of their own deformation force and cover the liquid outlet end of the hollow roller brush 310d again.

[0051] In this embodiment, the external force squeezing the hollow roller brush 310d is applied by the conveyor belt 62. Specifically, the cleaning roller assembly 30 is driven to rise by the first lifting assembly 34, so that the hollow roller brush 310d is bent by the lower end face of the conveyor belt 62, and the liquid pressure of the cleaning agent in the hollow roller brush 310d can drive the passive valve 312 to open, releasing the cleaning agent stored in the hollow roller brush 310d. Compared with the traditional method of spraying the cleaning agent over a large area, the present application can realize the rapid and efficient in-situ passive release of the cleaning agent, directly acting on the conveyor belt 62 and effectively reducing the waste of the cleaning agent.

[0052] In addition, by adjusting the height of the cleaning roller assembly 30 through the first lifting assembly 34, the squeezing degree of the conveyor belt 62 on the hollow roller brush 310d can be adjusted, thereby adjusting the bending degree of the hollow roller brush 310d and further adjusting the release amount of the cleaning agent. Specifically, the closer the distance between the roller body 310 and the lower end face of the conveyor belt 62, the greater the squeezing degree of the conveyor belt 62 on the hollow roller brush 310d, the greater the bending degree of the hollow roller brush 310d, and the more cleaning agent is released; the farther the distance between the roller body 310 and the lower end face of the conveyor belt 62, the smaller the squeezing degree of the conveyor belt 62 on the hollow roller brush 310d, the smaller the bending degree of the hollow roller brush 310d, and the less cleaning agent is released. In this way, it is convenient to adjust the release amount of the cleaning agent in real time according to the dirtiness degree of the conveyor belt 62.

[0053] During the rotation of the roller body 310, in order to ensure that the cleaning agent in the accommodating cavity does not leak, a sealing structure is provided between the fixing part 311 and the roller body 310. Specifically, referring to Figure 12 in (A), the fixing part 311 includes a fixing shaft 311d and a sealing connection head 311f that are coaxially fixed. Fixing pin holes 311b are formed on the circumferential side of the fixing shaft 311d, and an external thread head 311a is coaxially fixed at one end of the fixing shaft 311d away from the sealing connection head 311f. Further, referring to Figure 7, an internal thread joint 324 is fixedly arranged on the fixing bracket 302, and the second conveying hose 323 passes through the internal thread joint 324; a fixing pin 303 is also slidably arranged on the fixing bracket 302. The fixing pin 303 is inserted and matched with the fixing pin hole 311b, and the internal thread joint 324 is threadedly matched with the external thread head 311a, so as to fix the fixing part 311 on the fixing bracket 302.

[0054] Referring to Figure 10 and Figure 12 In (A) thereof, the sealing structure includes a first sealing part 310f arranged on the inner peripheral side of one end of the hollow column shell 310b and a second sealing part 311e arranged on the outer peripheral side of the sealing connector 311f, and the first sealing part 310f is in sealing cooperation with the second sealing part 311e. In this embodiment, the first sealing part 310f is two annular protrusions fixedly arranged on the inner peripheral side of one end of the hollow column shell 310b, and the second sealing part 311e is an annular groove arranged on the sealing connector 311f for accommodating the annular protrusion. Through the sealing cooperation between the first sealing part 310f and the second sealing part 311e, the rotational sealing connection between the hollow column shell 310b and the sealing connector 311f is realized.

[0055] Referring to Figure 12 In (B) thereof, a buffer flow channel 311c is axially penetrated through the fixing part 311, and the buffer flow channel 311c is used for communicating the accommodating cavity and the conveying assembly 32. Specifically, one end of the buffer flow channel 311c close to the external thread head 311a communicates with the second conveying hose 323, and one end of the buffer flow channel 311c far from the external thread head 311a communicates with the accommodating cavity in the hollow column shell 310b.

[0056] In order to improve the contact effect between the cleaning roller 31 and the conveyor belt 62, in this embodiment, the tensioning and vibrating mechanism 4 is adopted to drive the conveyor belt 62 to vibrate or to tension the conveyor belt 62. Referring to Figure 13 , the tensioning and vibrating mechanism 4 includes a sliding frame 43 arranged on the inner side of the conveyor belt 62 in a lifting manner and a vibrating assembly for driving the sliding frame 43 to vibrate reciprocally in the vertical direction. A tensioning roller 45 is rotatably arranged on the sliding frame 43, and the tensioning roller 45 abuts against the inner side of the conveyor belt 62.

[0057] Specifically, referring to Figure 13 and Figure 14 , guide rails 44 are respectively and fixedly arranged on both sides of the frame 2, and the guide rails 44 are vertical. The sliding frame 43 includes a tensioning roller bracket 43b and sliders 43c fixedly connected to both sides of the tensioning roller bracket 43b. Each slider 43c is slidably arranged in the corresponding guide rail 44, and the tensioning roller 45 is rotatably arranged on the tensioning roller bracket 43b.

[0058] Furthermore, referring to Figure 13 and Figure 14A horizontal slide groove 43a is provided on the tension roller bracket 43b, and the vibration assembly includes a crankshaft 42 that reciprocates around a fixed point and a driving member for driving the crankshaft 42 to swing. Specifically, the driving member is a third motor 40, and the third motor 40 is fixedly arranged on the frame 2 through a third motor bracket 41. The third motor 40 can be a stepping motor, a servo motor, etc. The output end of the third motor 40 is fixedly connected to one end of the crankshaft 42, and the other end of the crankshaft 42, that is, the free end of the crankshaft 42, is slidably arranged in the slide groove 43a.

[0059] In the vibration mode, the third motor 40 drives the crankshaft 42 to rotate, and the free end of the crankshaft 42 slides back and forth along the slide slot 43a, thereby driving the slide frame 43 to vibrate back and forth in the vertical direction, and then the tensioning roller 45 drives the conveyor belt 62 to vibrate in the vertical direction. In the tensioning mode, the third motor 40 drives the crankshaft 42 to rotate downward to be vertical, and the slide frame 43 reaches the maximum displacement in the vertical direction, so that the tensioning roller 45 tensions the conveyor belt 62.

[0060] When cleaning the conveyor belt 62, a vibration mode or a tensioning mode may be used according to actual needs to compensate for the looseness of the conveyor belt 62 within a certain range, so as to improve the contact effect between the cleaning roller 31 and the conveyor belt 62, thereby improving the cleaning efficiency.

[0061] After the conveyor belt 62 is cleaned, the conveyor belt 62 is rinsed and dried in turn by the rinse mechanism 8 and the drying mechanism 5, so that the conveyor belt 62 can be quickly restored to a usable state.

[0062] Specifically, refer to Figure 15 The flushing mechanism 8 includes a water tank 8a, a water pump 8c and a flushing nozzle 8e. The water inlet end of the water pump 8c is connected to the water tank 8a through a third delivery hose 8b, and the water outlet end of the water pump 8c is connected to the flushing nozzle 8e through a fourth delivery hose 8d. The flushing nozzle 8e faces the lower end surface of the conveyor belt 62.

[0063] Reference Figure 1 and Figure 2 The second support plate 23 is fixedly arranged on the bottom plate 21, and the second guide rod sliding sleeve 23a is fixedly arranged on the second support plate 23. The second support plate 23 is provided with a second lifting platform 54 and a second lifting assembly 53 for driving the second lifting platform 54 to lift and lower in the vertical direction, and the drying mechanism 5 is fixedly arranged on the second lifting platform 54. The structure of the second lifting assembly 53 is the same as that of the first lifting assembly 34, and will not be described in detail here.

[0064] Further, refer to Figure 16 The drying mechanism 5 includes a scraper assembly 50, a drying roller assembly 51 and a hot air blower 52 which are sequentially arranged along the running direction of the conveyor belt 62.

[0065] Reference Figure 16 andFigure 17 The scraper assembly 50 includes a support platform 501 fixedly arranged on the second lifting platform 54 and a scraper 503 rotatably arranged on the support platform 501. Specifically, the scraper 503 can be rotatably connected to the support platform 501 through a rotating shaft. A fixed platform 503a is fixedly connected to one side of the scraper 503. A torsion spring 502 is sleeved on the rotating shaft. One end of the torsion spring 502 is fixedly connected to the fixed platform 503a, and the other end of the torsion spring 502 is fixedly connected to the support platform 501. The deformation force of the torsion spring 502 can drive the free end of the scraper 503 to elastically abut against the lower end surface of the conveyor belt 62, so as to scrape off the water adhering to the lower end surface of the conveyor belt 62 through the scraper 503.

[0066] Further, referring to Figure 18 The drying roller assembly 51 includes a second support 510 fixedly arranged on the second lifting platform 54, a main drying roller 512 and a sub-drying roller 513 rotatably arranged on the second support 510. The main drying roller 512 and the sub-drying roller 513 are respectively rotatably connected to the second support 510 through corresponding second bearing brackets 511. A plurality of wide strip roller hairs 512a are fixedly arranged on the outer periphery of the main drying roller 512, and a plurality of narrow strip roller hairs 513a are fixedly arranged on the outer periphery of the sub-drying roller 513. The wide strip roller hairs 512a and the narrow strip roller hairs 513a are both made of water-absorbing materials. The main drying roller 512 and the sub-drying roller 513 wipe the conveyor belt 62 preliminarily and further in sequence; after the wiping is completed, the conveyor belt 62 is dried by a hot air blower 52.

[0067] Referring to Figure 1 A main control box 7 is arranged on the frame 2. The start and stop of devices such as the motor and the voltage stabilizing air pump 320 are controlled through the main control box 7.

[0068] The embodiment of the present application also discloses a use method of a conveyor belt cleaning device for in-situ passive release of a cleaning agent, which is divided into three stages: cleaning, rinsing and drying, and specifically includes the following steps: Step 1, cleaning stage: First, start the fourth motor 65a to drive the conveyor belt 62 to run.

[0069] Subsequently, start the voltage stabilizing air pump 320 to convey the cleaning agent into the accommodating cavity of the roller body 310, so that the accommodating cavity is filled with the cleaning agent and enters the hollow roller hairs 310d for storage; start the first motor 330 to drive the cleaning roller 31 to rotate reversely relative to the conveyor belt 62.

[0070] The first lifting component 34 is used to drive the cleaning roller assembly 30 to rise until the hollow roller brush 310d is bent under the extrusion of the lower end face of the conveyor belt 62. The liquid pressure of the cleaning agent in the hollow roller brush 310d drives the passive valve 312 to open, releasing the cleaning agent stored in the hollow roller brush 310d for cleaning the conveyor belt 62. During this process, the constant-pressure air pump 320 can be kept running to supplement the cleaning agent into the accommodating cavity.

[0071] During the cleaning of the conveyor belt 62, the third motor 40 is used to drive the crankshaft 42 to rotate or swing to the lowest point and then stop, driving the conveyor belt 62 to vibrate or tension the conveyor belt 62 to improve the contact effect between the cleaning roller 31 and the conveyor belt 62.

[0072] After the cleaning is completed, the first lifting component 34 is used to drive the cleaning roller assembly 30 to descend, so that the cleaning roller 31 is away from the conveyor belt 62.

[0073] Step 2: Flushing stage: The water pump 8c is started, and the flushing nozzle 8e sprays water to flush the lower end face of the conveyor belt 62.

[0074] Step 3: Drying stage: The second lifting platform 54 is adjusted to a suitable height by the second lifting component 53, so that the scraper 503, the main drying roller 512 and the auxiliary drying roller 513 all abut against the lower end face of the conveyor belt 62; during the operation of the conveyor belt 62, it passes through the scraper 503, the main drying roller 512, the auxiliary drying roller 513 and the hot air blower 52 in sequence. The scraper 503 scrapes off the water attached to the conveyor belt 62, the main drying roller 512 and the auxiliary drying roller 513 wipe the conveyor belt 62, and the hot air blower 52 blows hot air to dry the conveyor belt 62.

[0075] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A conveyor belt cleaning device for passively releasing cleaning agent in situ, characterized in that: It includes a tensioning vibration mechanism arranged on the inner side of the downward section of the conveyor belt, and a cleaning mechanism, a flushing mechanism and a drying mechanism arranged on the outer side of the downward section of the conveyor belt and arranged in sequence along the running direction of the conveyor belt; The tensioning vibration mechanism is used to drive the conveyor belt to vibrate or tension the conveyor belt; The cleaning mechanism comprises a cleaning roller assembly, a conveying assembly, a power assembly and a first lifting assembly, wherein the cleaning roller assembly comprises a rotatably arranged cleaning roller, the cleaning roller comprises a roller body and a plurality of hollow roller hairs fixed to the outer periphery of the roller body, the roller body is provided with a receiving chamber for containing a cleaning agent; the hollow roller hairs are elastic, one end of which is connected to the receiving chamber, and the other end is provided with a passive valve; the power assembly is used to drive the cleaning roller to rotate, and the conveying assembly is used to convey the cleaning agent into the receiving chamber; the first lifting assembly is used to drive the cleaning roller assembly to rise and fall, and when the cleaning roller assembly rises, the hollow roller hairs are squeezed by the lower end surface of the conveyor belt and bent, and the liquid pressure of the cleaning agent in the hollow roller hairs can drive the passive valve to open, so as to release the cleaning agent stored in the hollow roller hairs; The flushing mechanism is used for flushing the conveyor belt; the drying mechanism is used for drying the conveyor belt.

2. A conveyor belt cleaning device for in-situ passive release of cleaning agent according to claim 1, characterized in that: The passive valve comprises at least three fan-shaped valve pieces, the arc side of the fan-shaped valve piece is fixedly connected to the inner wall of the hollow roller hair, and a plurality of the fan-shaped valve pieces are spliced ​​into a circle to cover the liquid outlet end of the hollow roller hair; the fan-shaped valve piece is elastic.

3. The conveyor belt cleaning device for in-situ passive release of cleaning agent according to claim 1, characterized in that: The delivery assembly comprises a liquid storage tank for storing detergent, one side of the liquid storage tank is connected to the accommodating cavity, and the other side of the liquid storage tank is connected to a pressure-stabilizing air pump.

4. The conveyor belt cleaning device for in-situ passive release of cleaning agent according to claim 1, characterized in that: The conveying assembly comprises a liquid storage tank for storing detergent, the liquid storage tank is connected to the accommodating cavity, and the position of the liquid storage tank is higher than the roller body.

5. The conveyor belt cleaning device for in-situ passive release of cleaning agent according to claim 1, characterized in that: The cleaning roller assembly also includes a fixing part, the roller body is rotatably connected to the fixing part, the fixing part is connected to the conveying assembly, the roller body is connected to the power assembly, and a sealing structure is provided between the fixing part and the roller body.

6. A conveyor belt cleaning device for in-situ passive release of cleaning agent according to claim 5, characterized in that: The roller body includes a hollow cylindrical shell, the internal space of the hollow cylindrical shell is the accommodating cavity, the fixed part includes a sealing connector, the sealing structure includes a first sealing part arranged on the inner peripheral side of one end of the hollow cylindrical shell and a second sealing part arranged on the outer peripheral side of the sealing connector, the first sealing part and the second sealing part are sealed together; the fixed part is provided with a buffer flow channel along its own axial direction, and the buffer flow channel is used to connect the accommodating cavity and the conveying component.

7. The conveyor belt cleaning device for in-situ passive release of cleaning agent according to claim 1, characterized in that: A plurality of solid roller bristles are also arranged on the outer circumference of the roller body, and the solid roller bristles and the hollow roller bristles are alternately distributed on the outer circumference of the roller body.

8. The conveyor belt cleaning device for in-situ passive release of cleaning agent according to claim 1, characterized in that: The tensioning vibration mechanism includes a sliding frame that is lifted and lowered on the inner side of the conveyor belt and a vibration component for driving the sliding frame to reciprocate and vibrate in a vertical direction. A tensioning roller is rotatably arranged on the sliding frame, and the tensioning roller abuts against the inner side of the conveyor belt.

9. A conveyor belt cleaning device for in-situ passive release of cleaning agent according to claim 8, characterized in that: The sliding frame is provided with a horizontal sliding groove, the vibration component comprises a crankshaft that reciprocates around a fixed point and a driving member for driving the crankshaft to swing, and the free end of the crankshaft is slidably arranged in the sliding groove.

10. A method for using the conveyor belt cleaning device for in-situ passive release of cleaning agent according to any one of claims 1 to 9, characterized in that: The following steps are involved: When the conveyor belt is running, the cleaning roller rotates in the opposite direction relative to the conveyor belt; The cleaning agent is conveyed into the accommodating cavity of the roller body by the conveying assembly, so that the cleaning agent enters the hollow roller hair from the accommodating cavity for storage; the cleaning roller assembly is driven to rise by the first lifting assembly until the hollow roller hair is squeezed and bent by the lower end surface of the conveyor belt, and the liquid pressure of the cleaning agent in the hollow roller hair drives the passive valve to open, so that the cleaning agent stored in the hollow roller hair is released for cleaning the conveyor belt; During the conveyor belt cleaning process, the conveyor belt is driven to vibrate or tensioned by a tensioning vibration mechanism to improve the contact effect between the cleaning roller and the conveyor belt; The conveyor belt is rinsed and dried in sequence by the rinsing mechanism and the drying mechanism.

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