A belt conveyor return belt cleaning device

Abstract

The present invention specifically relates to a belt conveyor return belt cleaning device, which belongs to the technical field of belt cleaning. The problem to be solved is to provide a belt conveyor return belt cleaning device which improves the on-site working environment. The scheme adopted is: a silo for receiving the discharged material is fixed at the unloading roller of the belt conveyor, a first sweeper is installed at the unloading roller, and the first sweeper is used to sweep the material remaining on the belt surface and fall into the silo. A wet belt cleaning component for further cleaning the residual material on the belt is installed on the return section of the belt; the spray pipe, three sweepers, roller group and fourth sweeper of the wet belt cleaning component are arranged in sequence along the running direction of the return section of the belt; the present invention timely cleans the fine materials attached to the belt surface to prevent these fine particles from floating in the air.

Description

Technical Field

[0001] The invention belongs to the technical field of belt cleaning, and in particular relates to a return belt cleaning device for a belt conveyor. Background Art

[0002] With the progress of society and the development of science, people have higher and higher requirements for environmental protection. The Ministry of Environmental Protection has continuously raised higher requirements for atmospheric emission standards, and the organized emission has been raised from the original 50mg / m 3 Modified to the current level of less than 10 mg / m 3 The ultra-low emission standards have put forward new requirements for unorganized emissions and also put forward higher requirements for the on-site operating environment, so the management of unorganized emissions has become the focus of everyone's attention.

[0003] There are tens of thousands of belt conveyors in operation in heavy industries such as metallurgy and coal. After the belts are used to transport materials, some materials will always be attached to them. The current belt cleaners can only clean up some relatively large particles, and some fine materials continue to adhere to the belt surface. The vibration of the belt during movement and the friction with the rollers will vibrate off the fine particles attached to the belt surface and float in the air to pollute the on-site environment. The cost of using large-scale dust removal equipment to control this kind of unorganized emissions is too high and the effect is not ideal. The existing domestic technology cannot effectively solve this problem. Belt conveyor belt dust is a problem we urgently need to solve. Summary of the invention

[0004] The present invention overcomes the shortcomings of the prior art and provides a return belt cleaning device for a belt conveyor, which can timely clean fine materials attached to the belt surface, prevent these fine particles from floating in the air, and improve the on-site working environment.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a belt conveyor return belt cleaning device, comprising: a first sweeper, a wet belt cleaning component and a silo, the unloading drum of the belt conveyor is fixed with the silo for receiving the unloading, the first sweeper is installed at the unloading drum, the first sweeper is used to sweep the materials remaining on the belt surface and fall into the silo, and the return section of the belt, i.e. the return belt, is installed with the wet belt cleaning component for further cleaning the residual materials on the belt;

[0006] The wet belt cleaning components include: a spray pipe, a three-way cleaner, a roller group and a No. 4 cleaner. The spray pipe, the three-way cleaner, the roller group and the No. 4 cleaner are arranged in sequence along the running direction of the belt return section. The spray pipe is arranged horizontally below the belt return section perpendicular to the running direction of the belt. The spray pipe is relatively fixed to the belt conveyor support frame. The spray pipe is used to spray water onto the belt surface for cleaning and moistening the belt surface. The three-way cleaner is used to clean material sludge attached to the belt surface after moistening. The roller group is used to squeeze the belt to clean the residual water on the belt. The No. 4 cleaner is used to further clean the residual water and materials.

[0007] This device is equipped with a first-stage cleaner and a wet belt cleaning component to clean the residual materials on the belt by both dry and wet methods. The wet belt cleaning component is also equipped with a water spray pipe and a roller group for squeezing out water, and then cooperates with a third-stage cleaner and a fourth-stage cleaner to carry out multiple cleaning processes. After spraying, squeezing and cleaning, the residual materials on the belt are thoroughly cleaned, and the belt surface is guaranteed to be dust-free and water-free, which effectively solves the dust problem and protects the working environment.

[0008] A high-pressure vortex air knife is installed on the side of the belt where the first sweeper is downward, and the high-pressure vortex air knife is used to spray the surface of the belt, and the sprayed material falls into the silo.

[0009] The high-pressure vortex air knife includes: a support frame A, an air outlet, an air inlet and a high-pressure vortex fan. The high-pressure vortex air knife is in a long strip shape and the air outlet faces the belt surface. The air inlet of the high-pressure vortex air knife is connected to the high-pressure vortex fan. The high-pressure vortex air knife is relatively fixed to the belt conveyor support frame through the support frame A.

[0010] The wet belt cleaning component also includes: a No. 1 water tank, a No. 2 water tank, a water pump, a dehydrator, a dosing component and a mud pump. The No. 1 water tank and the No. 2 water tank are arranged side by side below the return section of the belt along the running direction of the belt. The No. 1 water tank is arranged below the spray pipe. The spray water after the spray pipe sprays the belt falls into the No. 1 water tank. The No. 2 water tank is connected to a tap water pipe. The spray pipe is connected to the water pump installed in the No. 2 water tank. The No. 1 water tank is provided with There is a dosing component for adding flocculants, and the flocculants are used to flocculate and precipitate the materials mixed with water in the No. 1 water tank. The No. 1 water tank is equipped with a mud pump, and the mud pump is used to pump the precipitated materials into the dewatering machine for solid-liquid separation. The dewatering machine is arranged above the belt, and the dewatering machine is relatively fixed to the belt conveyor support frame. The water outlet of the dewatering machine is connected to the No. 2 water tank, and the solids discharged from the dewatering machine fall onto the running belt. The sludge cleaned and dehydrated by the wet belt cleaning component falls onto the surface of the belt material and enters the production system with the material. The discharged water flows back to the silo for recycling, realizing the process of non-emission cleaning, effectively keeping the production workshop clean, achieving full utilization of materials, and saving costs.

[0011] The single-stage sweeper includes: a scraper A, a supporting transverse axis A, a supporting plate and a tensioner A. The upper edge of the scraper A is in contact with the belt surface at the end of the discharge roller. The lower end of the scraper A is detachably fixedly connected to the horizontally arranged supporting transverse axis A. The detachable fixed connection is made by bolts to facilitate the replacement of the scraper A. The supporting transverse axis A is axially parallel to the discharge roller. Support plates are fixed at both ends of the supporting transverse axis A. The upper part of the support plate is hinged to the belt conveyor support frame on the corresponding side. Tensioners A are installed on the support plates. The tensioner A is used to push the support plate to rotate around the hinge between the support plate and the belt conveyor support frame so that the scraper A is in contact with the belt surface.

[0012] The tensioner A includes: a connecting plate A, a compression spring A, a connecting shaft and a waist hole A. The connecting plate A is vertically arranged with the supporting horizontal axis A. The upper end of the connecting plate A is fixed with the supporting horizontal axis A. The lower part of the connecting plate A is provided with the waist hole A. The connecting shaft vertically arranged with the supporting horizontal axis A passes through the waist hole A, and the connecting shaft can move relative to the waist hole A. One end of the connecting shaft away from the unloading roller is fixed relative to the supporting plate on the corresponding side. The other end of the connecting shaft is sleeved with the compression spring A, and the connecting shaft extends outside the compression spring A. One end of the compression spring A is fixed with the belt conveyor support frame, and the other end of the compression spring A is tightly against the waist hole A of the connecting plate A. By driving the lower end of the connecting plate A to swing outward, the support plate is driven to rotate around the hinge between it and the belt conveyor support frame.

[0013] The three-way sweeper and the fourth-way sweeper have the same structure, and both include: a scraper B, a support shaft B, a lifting rod and a tensioner B. The upper end edge of the scraper B fits against the lower surface of the belt return section, and the lower end of the scraper B is detachably fixedly connected to the horizontally arranged support shaft B, and is detachably fixedly connected by bolts to facilitate the replacement of the scraper B. The support shaft B is axially parallel to the unloading roller, and lifting rods are provided at both ends of the support shaft B. The upper ends of the lifting rods are fixed to the ends on the corresponding sides of the support shaft B, and the lower ends of the lifting rods are connected to the tensioner B, which is used to drive the lifting rods to rise and thereby drive the scraper B to fit against the lower surface of the belt return section, and the tensioner B is connected to the belt conveyor support frame on the corresponding side.

[0014] The tensioner B comprises: a support sleeve, a compression spring B and a limit bolt. The support sleeve is coaxially sleeved at the lower part of the lifting rod. The lifting rod can axially reciprocate relative to the support sleeve. The limit bolt is fixed at the lower end of the lifting rod. The limit bolt is used to prevent the lower end of the lifting rod from slipping off the support sleeve. The compression spring B is sleeved on the lifting rod inside the support sleeve. The lower end of the compression spring B is fixed to the support sleeve. The upper end of the compression spring B is fixed to the lifting rod. The compression spring B is used to drive the lifting rod to rise, thereby driving the scraper B to fit the lower surface of the return section of the belt. A connecting plate B is fixed to one side of the support sleeve. A fixing plate is provided at the other end of the connecting plate B. The fixing plate is fixed to the belt conveyor support frame on the corresponding side. A waist hole B is provided on the fixing plate. The other end of the connecting plate B is fixed to the corresponding waist hole B through bolts. The installation height of the support sleeve can be adjusted by adjusting the connection position of the connecting plate B and the waist hole B.

[0015] The roller group includes: No. 2 idler, pressure roller and No. 1 idler, the No. 2 idler, pressure roller and No. 1 idler are arranged axially perpendicular to the running direction of the belt, the pressure roller is pressed against the upper surface of the return section of the belt, the No. 2 idler and No. 1 idler are arranged symmetrically relative to the pressure roller, the No. 2 idler and No. 1 idler are attached to the lower surface of the return section of the belt, and the No. 2 idler, pressure roller and No. 1 idler are connected to the belt conveyor support frame through a bearing seat. The No. 2 idler, pressure roller and No. 1 idler arranged in a tripod shape squeeze and clean the water on the belt surface, and the cleaned water falls into the No. 1 water tank and the No. 2 water tank.

[0016] The dosing component includes: a drug storage hopper, a spiral feed pipe and a drug outlet. The drug storage hopper is fixedly arranged relative to the No. 1 water tank. The spiral feed pipe driven by a motor is installed below the drug storage hopper. The end of the spiral feed pipe is provided with the drug outlet for adding flocculant to the No. 1 water tank. The dosing component is used for adding flocculant to the No. 1 water tank in a regular and quantitative manner.

[0017] A second-pass cleaner is installed below the belt return section between the spray pipe and the high-pressure vortex air knife. The second-pass cleaner has the same structure as the three-pass cleaner, further increasing the cleaning process and improving the cleaning effect of the deposited materials on the belt.

[0018] The walls of the No. 1 water tank and the No. 2 water tank both include: a stainless steel layer, a heating belt and a thermal insulation cotton layer, which are arranged in sequence from the inside to the outside. The heating belt is connected to a temperature control switch to insulate the water tank and prevent the circulating water from freezing in winter.

[0019] A slanted material guide plate is fixed on one side of the No. 2 water tank away from the No. 1 water tank, which is used to deposit trace dust falling from the belt and slide it into the No. 2 water tank, effectively ensuring the hygiene of the workplace.

[0020] Compared with the prior art, the present invention has the following beneficial effects.

[0021] 1. The present invention provides a first-pass cleaner, a high-pressure vortex air knife, a second-pass cleaner and a wet belt cleaning component to clean the residual materials on the belt by dry and wet methods, with good cleaning effect. The dust accumulation problem at the redirecting roller position and the problem of material sticking to the lower roller are solved, the problem of material accumulation on the return journey of the belt conveyor is eliminated, the belt deviation phenomenon is reduced, the roller corrosion is prevented, the service life is extended, and the manual cleaning cost is reduced.

[0022] 2. The wet belt cleaning component of the present invention is provided with a No. 1 water tank, a No. 2 water tank and a dewatering machine. The sludge falls onto the surface of the belt material and enters the production system with the material. The dewatered water flows back to the silo for recycling. There is zero discharge of wastewater and recycling. The new water consumption is small, and a zero-emission cleaning process is achieved without secondary dust. The cleanliness of the production workshop is effectively maintained, materials are recycled, energy is saved and environmental protection is achieved, and full utilization of materials is achieved, cost is saved, and the equipment has a simple structure and is easy to operate and maintain.

[0023] 3. The scraper A and the scraper B of the present invention are both detachably fixedly connected by bolts, and can be replaced quickly.

[0024] Fourth, the scraper A and scraper B of the present invention are both equipped with corresponding tensioners, and the spring tensioner can protect the cleaning surface and prevent the cleaning surface from being affected by the high-speed belt and various joints. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 The present invention is a schematic structural diagram of a return belt cleaning device for a belt conveyor.

[0027] Figure 2 This is an enlarged view of point A of the present invention.

[0028] Figure 3 It is an enlarged view of point B of the present invention.

[0029] Figure 4 It is a front view of a sweeper of the present invention.

[0030] Figure 5 The figure is a schematic diagram of the structure of the installation state of a sweeper of the present invention.

[0031] Figure 6 It is a front view of the second-pass cleaner of the present invention.

[0032] Figure 7 It is a left side view of the second-pass cleaner of the present invention.

[0033] Figure 8 It is a partial cross-sectional view of the second-pass cleaner of the present invention.

[0034] Fig. 9 It is a schematic structural diagram of the installation state of the second-pass cleaner of the present invention.

[0035] Fig.10 It is a front view of the medicated component of the present invention.

[0036] Fig.11 It is a schematic structural diagram of the high-pressure vortex air knife of the present invention.

[0037] Fig.12 It is a partial cross-sectional view of the tank wall of the No. 1 water tank and the No. 2 water tank of the present invention.

[0038] In the figure: 1 is a belt, 2 is a dehydrator, 3 is a discharge drum, 4 is a first-stage cleaner, 5 is a high-pressure vortex air knife, 6 is a belt conveyor support frame, 7 is a second-stage cleaner, 8 is a wet belt cleaning component, 9 is a second roller, 10 is a pressure roller, 11 is a first roller, 12 is a spray pipe, 13 is a third-stage cleaner, 14 is a dosing component, 15 is a first water tank, 16 is a second water tank, 17 is a fourth cleaner, 18 is a guide plate, 19 is a scraper A, 20 is a support horizontal axis A, and 21 is a connecting plate A, 22 is compression spring A, 23 is connecting shaft, 24 is support frame A, 25 is support plate, 26 is air outlet, 27 is air inlet, 28 is waist hole A, 29 is silo, 30 is scraper B, 31 is support shaft B, 32 is lifting rod, 33 is support sleeve, 34 is fixing plate, 35 is waist hole B, 36 is compression spring B, 37 is connecting plate B, 38 is limit bolt, 39 is spiral feed pipe, 40 is medicine outlet, 41 is stainless steel layer, 42 is heating belt, 43 is thermal insulation cotton layer. DETAILED DESCRIPTION

[0039] The following is a further description with reference to specific embodiments.

[0040] A belt conveyor return belt cleaning device, comprising: a first sweeper 4, a wet belt cleaning component 8 and a silo 29, wherein the silo 29 for receiving the discharge is fixed at the discharge drum 3 of the belt conveyor, the first sweeper 4 is installed at the discharge drum 3, the first sweeper 4 is used to sweep the materials remaining on the surface of the belt 1 and fall into the silo 29, and the return section of the belt 1 is equipped with the wet belt cleaning component 8 for further cleaning the residual materials of the belt 1;

[0041] The wet belt cleaning component 8 includes: a spray pipe 12, a three-way cleaner 13, a roller group and a No. 4 cleaner 17. The spray pipe 12, the three-way cleaner 13, the roller group and the No. 4 cleaner 17 are arranged in sequence along the running direction of the return section of the belt 1. The spray pipe 12 is arranged horizontally below the return section of the belt 1 perpendicular to the running direction of the belt 1. The spray pipe 12 is relatively fixed to the belt conveyor support frame 6. The spray pipe 12 is used to spray water onto the surface of the belt 1 for cleaning and moistening the belt surface. The water volume per hour is not less than 5 tons. The three-way cleaner 13 is used to clean the material sludge attached to the surface of the belt 1 after moistening. The roller group is used to squeeze the belt 1 to clean the residual moisture on the belt 1. The No. 4 cleaner 17 is used to further clean the residual moisture and materials.

[0042] A high-pressure vortex air knife 5 is installed on the side of the belt 1 where the first sweeper 4 is downward, and the high-pressure vortex air knife 5 is used to spray the surface of the belt 1, and the sprayed material falls into the silo 29.

[0043] The high-pressure vortex wind knife 5 includes: a support frame A24, an air outlet 26, an air inlet 27 and a high-pressure vortex fan. The high-pressure vortex wind knife 5 is in a long strip shape, and the air outlet 26 faces the surface of the belt 1. The air inlet 27 of the high-pressure vortex wind knife 5 is connected to the high-pressure vortex fan. The high-pressure vortex wind knife 5 is relatively fixed to the belt conveyor support frame 6 through the support frame A24. A vortex air pump can be selected to replace the high-pressure vortex fan, and the wind force is 450m 3 / h, and the width of the air outlet 26 is 0.55mm-2.5mm.

[0044] The wet belt cleaning component 8 also includes: a No. 1 water tank 15, a No. 2 water tank 16, a water pump, a dehydrator 2, a dosing component 14 and a mud pump. The No. 1 water tank 15 and the No. 2 water tank 16 are arranged side by side below the return section of the belt 1 along the running direction of the belt 1. The No. 1 water tank 15 is arranged below the spray pipe 12. The spray water after the spray pipe 12 sprays the belt 1 falls into the No. 1 water tank 15. The No. 2 water tank 16 is connected to a tap water pipe. The spray pipe 12 is connected to a water pump installed in the No. 2 water tank 16. The dosing component 14 for adding flocculant is provided on the No. 1 water tank 15, and the flocculant is used to flocculate and precipitate the material mixed with water in the No. 1 water tank 15. The No. 1 water tank 15 is installed with the mud pump, and the mud pump is used to pump the precipitated material into the dewatering machine 2 for solid-liquid separation. The dewatering machine 2 is arranged above the belt 1, and the dewatering machine 2 is relatively fixed to the belt conveyor support frame 6. The water outlet of the dewatering machine 2 is connected to the No. 2 water tank 16, and the solids discharged from the dewatering machine 2 fall onto the running belt 1.

[0045] The No. 2 water tank 16 is also equipped with a mud pump for pumping sewage in the No. 2 water tank 16 into the No. 1 water tank 15 .

[0046] The one-stage sweeper 4 includes: a scraper A19, a supporting transverse axis A20, a supporting plate 25 and a tensioner A. The upper edge of the scraper A19 is in contact with the surface of the belt 1 at the end of the discharge roller 3. The lower end of the scraper A19 is detachably fixedly connected to the horizontally arranged supporting transverse axis A20, and the detachable fixed connection is made by bolts to facilitate the replacement of the scraper A19. The supporting transverse axis A20 is axially parallel to the discharge roller 3. Support plates 25 are fixed at both ends of the supporting transverse axis A20. The upper part of the support plate 25 is hinged to the belt conveyor support frame 6 on the corresponding side. The support plate 25 is installed with a tensioner A. The tensioner A is used to push the support plate 25 to rotate around the hinge between the support plate 25 and the belt conveyor support frame 6 so that the scraper A19 is in contact with the surface of the belt 1.

[0047] The tensioner A comprises: a connecting plate A21, a compression spring A22, a connecting shaft 23 and a waist hole A28, wherein the connecting plate A21 is arranged perpendicularly to the supporting transverse axis A20, the upper end of the connecting plate A21 is fixed to the supporting transverse axis A20, the lower part of the connecting plate A21 is provided with the waist hole A28, the connecting shaft 23 arranged perpendicularly to the supporting transverse axis A20 passes through the waist hole A28, and the connecting shaft 23 can move relative to the waist hole A28, and the connecting shaft 23 is away from the unloading roller One end of the connecting shaft 23 is fixed relative to the support plate 25 on the corresponding side, the other end of the connecting shaft 23 is sleeved with the compression spring A22, and the connecting shaft 23 extends to the outside of the compression spring A22, one end of the compression spring A22 is fixed to the belt conveyor support frame 6, and the other end of the compression spring A22 is tightly against the waist hole A28 of the connecting plate A21, and the lower end of the connecting plate A21 is driven to swing outward, thereby driving the support plate 25 to rotate around the hinge between it and the belt conveyor support frame 6.

[0048] The three-way sweeper 13 and the fourth sweeper 17 have the same structure. Both the three-way sweeper 13 and the fourth sweeper 17 include: a scraper B30, a support shaft B31, a lifting rod 32 and a tensioner B. The upper end edge of the scraper B30 is in contact with the lower surface of the return section of the belt 1. The lower end of the scraper B30 is detachably fixedly connected to the horizontally arranged support shaft B31, and is detachably fixedly connected by bolts to facilitate the replacement of the scraper B30. The support shaft B31 is axially parallel to the unloading roller 3. Lifting rods 32 are provided at both ends of the support shaft B31. The upper ends of the lifting rods 32 are fixed to the ends on the corresponding sides of the support shaft B31. The lower ends of the lifting rods 32 are connected to the tensioners B. The tensioners B are used to drive the lifting rods 32 to rise, thereby driving the scraper B30 to fit the lower surface of the return section of the belt 1. The tensioner B is connected to the belt conveyor support frame 6 on the corresponding side.

[0049] The tensioner B includes: a support sleeve 33, a compression spring B36 and a limit bolt 38. The support sleeve 33 is coaxially sleeved at the lower part of the lifting rod 32. The lifting rod 32 can axially reciprocate relative to the support sleeve 33. The limit bolt 38 is fixed to the lower end of the lifting rod 32. The limit bolt 38 is used to prevent the lower end of the lifting rod 32 from slipping off the support sleeve 33. The compression spring B36 is sleeved on the lifting rod 32 inside the support sleeve 33. The lower end of the compression spring B36 is fixed to the support sleeve 33. The upper end of the compression spring B36 is fixed to the lifting rod 32. The lowering rod 32 is fixed, and the compression spring B36 is used to drive the lifting rod 32 to rise, thereby driving the scraper B30 to fit the lower surface of the return section of the belt 1. A connecting plate B37 is fixed on one side of the support sleeve 33, and a fixing plate 34 is provided at the other end of the connecting plate B37. The fixing plate 34 is fixed to the belt conveyor support frame 6 on the corresponding side, and a waist hole B35 is provided on the fixing plate 34. The other end of the connecting plate B37 is fixed to the corresponding waist hole B35 through bolts. The installation height of the support sleeve 33 can be adjusted by adjusting the connection position of the connecting plate B37 and the waist hole B35.

[0050] The roller group includes: No. 2 roller 9, pressure roller 10 and No. 1 roller 11, wherein the No. 2 roller 9, pressure roller 10 and No. 1 roller 11 are arranged axially perpendicular to the running direction of the belt 1, the pressure roller 10 is pressed against the upper surface of the return section of the belt 1, the No. 2 roller 9 and the No. 1 roller 11 are arranged symmetrically relative to the pressure roller 10, the No. 2 roller 9 and the No. 1 roller 11 are attached to the lower surface of the return section of the belt 1, and the No. 2 roller 9, pressure roller 10 and No. 1 roller 11 are connected to the belt conveyor support frame 6 through a bearing seat. The No. 2 roller 9, pressure roller 10 and No. 1 roller 11 arranged in a tripod shape squeeze and clean the water on the surface of the belt 1, and the cleaned water falls into the No. 1 water tank 15 and the No. 2 water tank 16.

[0051] The dosing component 14 includes: a drug storage hopper, a spiral feed pipe 39 and a drug outlet 40. The drug storage hopper is fixedly arranged relative to the No. 1 water tank 15. The spiral feed pipe 39 driven by a motor is installed below the drug storage hopper. The end of the spiral feed pipe 39 is provided with the drug outlet 40 for adding flocculant to the No. 1 water tank 15. The dosing component 14 is used to add flocculant to the No. 1 water tank 15 at a regular and quantitative manner.

[0052] A second-pass cleaner 7 is installed below the return section of the belt 1 between the spray pipe 12 and the high-pressure vortex air knife 5. The second-pass cleaner 7 has the same structure as the third-pass cleaner 13, further increasing the cleaning process and improving the cleaning effect of the deposited materials on the belt.

[0053] The walls of the No. 1 water tank 15 and the No. 2 water tank 16 both include: a stainless steel layer 41, a heating belt 42 and a thermal insulation cotton layer 43, which are arranged in sequence from the inside to the outside. The heating belt 42 is connected to a temperature control switch to insulate the water tanks and prevent the circulating water from freezing in winter.

[0054] A slanted guide plate 18 is fixed to one side of the No. 2 water tank 16 away from the No. 1 water tank 15 to deposit the trace dust falling from the belt 1 and slide it into the No. 2 water tank 16, thereby effectively ensuring the hygiene of the workplace.

[0055] The scraper A19 and the scraper B30 are both made of polyurethane vulcanization and have the characteristics of water resistance, high friction coefficient, high elasticity, acid and alkali resistance, etc.

[0056] This device is equipped with a PLC control system, which can communicate and control with the main system to realize real-time online detection of the operation status of the facility. The wet belt cleaning components and the belt operation are linked and synchronized, and unmanned control requirements are eliminated, which completely frees the heavy physical labor of manual cleaning and reduces cleaning costs.

[0057] Water source requirements: industrial purified water, water pressure greater than 0.2MPa, water consumption less than 1 ton per day.

[0058] Voltage requirements: Industrial electricity 380V, 50Hz, total power 15KW.

[0059] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Those familiar with the technology may modify or improve the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A belt conveyor return belt cleaning device, characterized in that: include: A first cleaner (4), a wet belt cleaning component (8) and a silo (29), wherein the silo (29) for receiving the discharged material is fixed at the discharge roller (3) of the belt conveyor, the first cleaner (4) is installed at the discharge roller (3), the first cleaner (4) is used to clean the material remaining on the surface of the belt (1) and drop it into the silo (29), and the return section of the belt (1) is installed with the wet belt cleaning component (8) for further cleaning the residual material on the belt (1); The wet belt cleaning component (8) comprises: a spray pipe (12), a three-way cleaner (13), a roller group and a fourth cleaner (17); the spray pipe (12), the three-way cleaner (13), the roller group and the fourth cleaner (17) are arranged in sequence along the running direction of the return section of the belt (1); the spray pipe (12) is arranged horizontally below the return section of the belt (1) perpendicular to the running direction of the belt (1); the spray pipe (12) is relatively fixed to the belt conveyor support frame (6); the spray pipe (12) is used to spray water onto the surface of the belt (1); the three-way cleaner (13) is used to clean the material sludge attached to the surface of the belt (1) after being wetted; the roller group is used to squeeze the belt (1) to clean the residual water on the belt (1); and the fourth cleaner (17) is used to further clean the residual water and material; The first sweeper (4) comprises: a scraper A (19), a support transverse axis A (20), a support plate (25) and a tensioner A, wherein the upper edge of the scraper A (19) is in contact with the surface of the belt (1) at the end of the discharge roller (3), and the lower end of the scraper A (19) is detachably fixedly connected to the horizontally arranged support transverse axis A (20), and the support transverse axis A (20) is arranged axially parallel to the discharge roller (3). Support plates (25) are fixed to both ends of the support transverse axis A (20), and the upper part of the support plate (25) is hinged to the belt conveyor support frame (6) on the corresponding side. The support plate (25) is installed with a tensioner A, and the tensioner A is used to push the support plate (25) to rotate around the hinge between the support plate (25) and the belt conveyor support frame (6) so that the scraper A (19) is in contact with the surface of the belt (1); The three-pass cleaner (13) and the fourth cleaner (17) have the same structure. Both the three-pass cleaner (13) and the fourth cleaner (17) include: a scraper B (30), a support shaft B (31), a lifting rod (32) and a tensioner B. The upper edge of the scraper B (30) is attached to the lower surface of the return section of the belt (1). The lower end of the scraper B (30) is detachably fixedly connected to the horizontally arranged support shaft B (31). The support shaft B (31) is connected to the discharge The roller (3) is arranged axially parallel, and lifting rods (32) are arranged at both ends of the support shaft B (31). The upper ends of the lifting rods (32) are fixed to the ends of the corresponding sides of the support shaft B (31), and the lower ends of the lifting rods (32) are connected to tensioners B. The tensioners B are used to drive the lifting rods (32) to rise, thereby driving the scraper B (30) to fit the lower surface of the return section of the belt (1), and the tensioners B are connected to the belt conveyor support frame (6) on the corresponding side.

2. A belt conveyor return belt cleaning device according to claim 1, characterized in that: A high-pressure vortex air knife (5) is installed on the side of the belt (1) below the first sweeper (4), and the high-pressure vortex air knife (5) is used to spray the surface of the belt (1), and the sprayed material falls into the silo (29).

3. The belt conveyor return belt cleaning device according to claim 1, characterized in that: The wet belt cleaning component (8) further comprises: a No. 1 water tank (15), a No. 2 water tank (16), a water pump, a dehydrator (2), a dosing component (14) and a mud pump. The No. 1 water tank (15) and the No. 2 water tank (16) are arranged side by side below the return section of the belt (1) along the running direction of the belt (1). The No. 1 water tank (15) is arranged below the spray pipe (12). The No. 2 water tank (16) is connected to a tap water pipe. The spray pipe (12) is connected to a water pump installed in the No. 2 water tank (16). The first water tank (15) is provided with the dosing component (14) for adding flocculants. The first water tank (15) is provided with the mud pump. The mud pump is used to pump the precipitated material into the dewatering machine (2) for solid-liquid separation. The dewatering machine (2) is arranged above the belt (1). The dewatering machine (2) and the belt conveyor support frame (6) are relatively fixed. The water outlet of the dewatering machine (2) is connected to the second water tank (16). The solids discharged from the dewatering machine (2) fall onto the running belt (1).

4. A belt conveyor return belt cleaning device according to claim 1 or 3, characterized in that: The roller group comprises: a No. 2 roller (9), a pressure roller (10) and a No. 1 roller (11); the No. 2 roller (9), the pressure roller (10) and the No. 1 roller (11) are axially arranged perpendicular to the running direction of the belt (1); the pressure roller (10) is pressed against the upper surface of the return section of the belt (1); the No. 2 roller (9) and the No. 1 roller (11) are symmetrically arranged relative to the pressure roller (10); the No. 2 roller (9) and the No. 1 roller (11) are in contact with the lower surface of the return section of the belt (1); the No. 2 roller (9), the pressure roller (10) and the No. 1 roller (11) are all connected to the belt conveyor support frame (6) via a bearing seat.

5. The belt conveyor return belt cleaning device according to claim 3, characterized in that: The drug adding component (14) comprises: a drug storage hopper, a spiral feed pipe (39) and a drug outlet (40); the drug storage hopper is fixedly arranged relative to the first water tank (15); the spiral feed pipe (39) driven by a motor is installed below the drug storage hopper; and the drug outlet (40) is arranged at the end of the spiral feed pipe (39).

6. A belt conveyor return belt cleaning device according to claim 2, characterized in that: A second-pass cleaner (7) is installed below the return section of the belt (1) between the spray pipe (12) and the high-pressure vortex air knife (5); the second-pass cleaner (7) has the same structure as the third-pass cleaner (13).

7. A belt conveyor return belt cleaning device according to claim 3, characterized in that: The walls of the first water tank (15) and the second water tank (16) both comprise a stainless steel layer (41), a heating belt (42) and a thermal insulation cotton layer (43), wherein the stainless steel layer (41), the heating belt (42) and the thermal insulation cotton layer (43) are arranged in sequence from the inside to the outside.

8. A belt conveyor return belt cleaning device according to claim 3, characterized in that: A material guide plate (18) arranged obliquely is fixed on a side of the No. 2 water tank (16) away from the No. 1 water tank (15).

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