CN210594020U - Return belt face belt cleaning device - Google Patents

Abstract

The utility model relates to a return belt surface cleaning device, the front end or the rear end of a conveying belt is provided with a return belt surface cleaning device, the return belt surface cleaning device comprises a fixed frame, a collector, a belt surface leveling component, a softening spraying component, a cleaning component and a quick drying component, wherein the collector is fixedly arranged below the fixed frame, a sewage mixture for collecting sewage, the leveling component with the surface is arranged on the fixed frame, the conveying belt penetrates through the belt surface leveling component to form a plane, the softening spraying component is arranged at the front end of the fixed frame, the softening spraying component can spray water mist to the conveying belt, the quick drying component is arranged at the rear end of the fixed frame, the quick-drying component can blow the conveying belt at high pressure, and the cleaning component is arranged at the middle section of the fixed rack and is positioned between the softening spraying component and the quick-drying component. The utility model has the advantages of high automation degree, high cleaning efficiency and stable performance.

Description

Return belt face belt cleaning device

Technical Field

The utility model relates to an environmental protection equipment field, concretely relates to dust removal baffle box.

Background

In industries such as thermal power plants and mine plants, bulk materials need to be conveyed. In bulk cargo conveying system, generally adopt the baffle box to carry the bulk cargo and remove dust more, it can carry out the bulk cargo and carry, can prevent again that the impact air current that produces when falling downwards by the top material from carrying the bulk cargo and going out and to the peripheral air in disperse and the dust pollution that forms. In the prior art, an unpowered dust removal guide chute is characterized in that a dust-containing positive pressure airflow generated when a material falls down is neutralized by positive pressure and negative pressure under the action of a two-stage circulating air return device according to the aerodynamic principle; thereby realizing the whole action of unpowered dust removal. Therefore, compared with the common guide chute, the requirement on the sealing performance is higher, and the tightness of the guide chute must be ensured.

Therefore, how to ensure the sealing performance of the unpowered dust removal guide chute, reduce the dust emission and improve the safety of the equipment without affecting the normal operation of the unpowered dust removal guide chute is a problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pair of leakproofness is good, and dust removal effect is good, safe and reliable's unpowered dust removal baffle box equipment.

Another object of the utility model is to provide a leakproofness is good, and it is effectual to press down dirt, can adjust, long service life's afterbody sealing device.

Another object of the present invention is to provide a tail drainage device which is convenient to control and convenient to drain without affecting the sealing of the tail.

The utility model discloses a still another aim at provides a degree of automation height, clean efficient, stable performance's return belt surface cleaning device.

Still another object of the utility model is to provide an installation is simple, convenient regulation, and the clearance formula atomizer that operates steadily reliably.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the unpowered dust removal guide chute equipment comprises a guide chute body and a conveying belt, wherein the guide chute body comprises a side plate, a cover plate and a supporting leg assembly, the side plate and the cover plate form a closed cavity, and the side plate and the cover plate are covered above the conveying belt through the supporting leg assembly; the method is characterized in that:

the guide chute body is sequentially provided with a blanking barrel, a primary circulation pressure relief device and a secondary circulation pressure relief device from back to front, and the guide chute body is also provided with a plurality of damping devices;

the rear end of the guide chute body is provided with a tail sealing device, the tail sealing device comprises a multi-stage sealing plate assembly, the multi-stage sealing plate assembly is arranged inside the rear end of the guide chute body at intervals, the sealing plate assembly comprises a curtain blocking plate, a curtain blocking pressing plate and a tail curtain blocking plate, the curtain blocking plate is fixedly arranged in the guide chute body, the tail curtain blocking plate is mounted on the curtain blocking plate through the curtain blocking pressing plate, two sides of the tail curtain blocking plate are tightly attached to the side plates, and the lower end of the tail curtain blocking plate is tightly attached to the conveying belt;

the rear end of the guide chute body is also provided with a tail drainage device, the tail drainage device comprises a driving part, a push rod assembly, a pull rod, a rotating shaft, a rotating frame and a connecting rod, the driving part is fixedly arranged on the guide chute body and drives the push rod assembly to stretch in the front-back direction, one end of the pull rod is hinged to the push rod assembly, the other end of the pull rod is fixedly arranged at the end part of the rotating shaft, the rotating shaft is rotatably arranged on the guide chute body, the rotating frame is fixedly arranged on the rotating shaft, the pull rod, the rotating shaft and the rotating frame are provided with a plurality of groups and correspond to the multistage sealing plate assemblies one by one, and the connecting rod is hinged between the pull rods and used for linking the pull rods; the driving part acts, and can drive the rotating frame to turn over through the linkage of the push rod assembly, the pull rod, the rotating shaft and the connecting rod, so that the tail check curtain is lifted and a gap is reserved between the tail check curtain and the conveying belt;

conveyer belt front end or rear end are provided with return belt face belt cleaning device, return belt face belt cleaning device includes fixed frame, collector, area flattening part, softens spraying part, cleans part and rapid-curing cutback part, fixed frame set up in the conveyer belt lower part, the return the conveyer belt passes fixed frame, the collector is fixed set up in fixed frame below for receive the sewage mixture of colony, area flattening part set up in fixed frame, the conveyer belt passes area flattening part and form a plane, soften spraying part set up in fixed frame front end, soften spraying part can to the conveyer belt sprays water smoke, rapid-curing cutback part set up in fixed frame rear end, rapid-curing cutback part can to conveyer belt high pressure sweeps, clean the part set up in fixed frame middle section and be located soften spraying part with rapid-curing cutback part between the quick-curing cutback part The cleaning component can press against the conveying belt for scraping;

the conveyer belt rear end has the afterbody cylinder, the conveyer belt rear end is provided with clearance formula atomizer, clearance formula atomizer is including supporting frame, crossbeam, nozzle, water pipe and switch board, it sets up to support the frame is fixed, the conveyer belt passes support the frame, the crossbeam along horizontal fixed set up in support the frame is last, just the crossbeam is located afterbody cylinder the place ahead, the nozzle fixed set up in on the crossbeam, water piping connection the nozzle with the switch board, be provided with the solenoid valve in the switch board, solenoid valve control the water pipe is intake, the nozzle can to afterbody cylinder sprays water smoke.

As an improvement, the sealing plate assembly further comprises an adjusting screw, an adjusting nut, a guide plate and a guide post, the guide post is fixedly arranged on the curtain blocking hanging plate, a sliding track is arranged on the guide plate, the guide plate is arranged on the guide post in a sliding manner along the vertical direction through the sliding track, the tail curtain blocking plate is fixedly arranged on the guide plate through the curtain blocking pressing plate, the lower end of the adjusting screw is rotatably arranged on the tail curtain blocking plate, the upper end of the adjusting screw penetrates through the cover plate, the adjusting nut is in threaded connection with the adjusting screw, and the adjusting nut is positioned above the cover plate; the tail curtain block is rotated by the adjusting screw rod through the adjusting nut to move up and down.

The adjusting screw rod is adjusted up and down, so that field operators can flexibly adjust the tightness according to the running condition of the equipment conveniently, the sealing effect of the tail part of the material guide groove is ensured, and the phenomena of powder spraying, material leakage and the like can not occur. It is worth mentioning that, when the live time is longer, wearing and tearing can appear in afterbody check curtain lower extreme, makes the gap appear between afterbody check curtain and the conveyer belt, just can adjust downwards this moment, continues to make afterbody check curtain compress tightly the conveyer belt, has improved afterbody sealing device's life.

Preferably, the tail sealing device comprises a three-stage sealing plate assembly, the curtain blocking hanging plate is fixedly arranged on the side plate through bolt combination, and two groups of guide plates and two groups of guide columns are symmetrically arranged on two sides of the adjusting screw rod; the tail check curtain is a rubber damping soft curtain.

The rubber damping soft curtain is a flexible substance, so that materials can be smoothly taken away along the running direction of the conveying belt without affecting the dust removal effect of the whole device; and the rubber damping soft curtain is not easy to generate spontaneous combustion after dust is adhered to the rubber damping soft curtain, and the rubber damping soft curtain is wear-resistant, so that the rubber damping soft curtain is not hardened and cracked particularly in winter, and has long service life.

Preferably, the driving member is a stepping motor. Can be controlled by electricity, and is convenient and reliable to control.

As the improvement, clean the part with be provided with the buffering subassembly between the fixed frame, have the torsional spring in the buffering subassembly, the buffering subassembly forces clean the part and contradict the conveyer belt. The cleaning component is used for pressure compensation through the buffer assembly, so that the attaching degree of the scraper and the conveying belt surface can be effectively controlled, and the conveying belt cannot be damaged.

Preferably, the belt surface leveling component comprises three parallel press rollers, one press roller is arranged on the upper side of the fixed rack, two press rollers are arranged on the lower side of the fixed rack, and the conveying belt can tightly pass through the upper press roller and the lower press roller. The belt surface leveling component can level the belt surface of the conveying belt through three pressing rollers, so that the conveying belt forms a plane when passing through the return belt surface cleaning device.

Preferably, the cleaning component is provided with a scraper, and an included angle between the scraper and the conveying belt is 60-80 degrees; the number of the cleaning components is four, and the four cleaning components are distributed at intervals. The cleaning effect of the structure is better, the cleaning component has four cleaning functions, and the cleaning degree can be improved.

Preferably, the nozzle is a universal joint spray assembly. The universal joint spray assembly can freely adjust the spray angle of the tail roller surface, the atomization coverage surface is convenient to control, and the fan-shaped atomization nozzle can uniformly spray on the roller surface without dead angles.

Compared with the prior art, the utility model has the advantages of it is obvious, following five parts that fall into explains five devices respectively and compares the advantage that current equipment has:

1. a material guide groove body: when the bulk material falls from the head of the upstream belt conveyor, the bulk material falls onto the conveying belt through the material falling barrel, the tail part of the conveying belt is sealed by the tail sealing device, the dusty air flow and the material flow move along the running direction of the conveying belt together and pass through the primary circulating pressure relief device, meanwhile, the dust-containing airflow is blocked by the damping device to form force mutual interference, the positive pressure airflow is guided to circulate in the first-stage circulating pressure relief device to balance the pressure and continuously pass through the damping device, the multi-stage damping device has an adsorption effect on the passing dust, a large amount of dust is adhered to agglomerate, automatically fall off under the disturbance of material flow, and are taken away along coal flow, and when the coal flows through the secondary circulation pressure relief device, and the incomplete pressure-relief air volume of the first-stage pressure-relief device is continuously treated until the outlet of the device, so that the positive pressure impact air flow generated by the falling of the material is reduced to the position below the belt speed of the belt conveyor, and the aim of dust removal is fulfilled. The guide chute body can automatically remove dust, and the positive pressure airflow generated by the falling of the materials in the transfer island is guided to circulate and block the airflow by utilizing the aerodynamic principle, so that the automatic dust removing principle is formed, and an external power source is not needed; can also prevent the phenomenon of detonation, transport the whole internal circulation of the automatic dust suppression device in island, structural design is reasonable, does not block up the passageway, prevents the dust degree of depth increase, avoids the phenomenon of detonation.

2. Tail sealing device: the tail sealing device is provided with three-stage sealing, so that dust at the tail of the guide chute body is prevented from overflowing, and the multi-stage sealing gradually weakens the air pressure in the guide chute, so that a small amount of dust-free gas overflows at the tail, dust is fully controlled, and the purpose of dust suppression is achieved. The tail curtain block is contacted with the surface of the conveying belt without damaging the surface of the belt, and the formed part is adapted to the surface of the belt to perform self-compensation sealing, thereby achieving the purpose of dust suppression.

3. Tail drainage device: in the application process of the unpowered dust removal device for the belt conveyor of the bulk conveying system transfer station, a power plant or a wharf belt conveyor is partially arranged in the open air, when a rainy season comes, the belt conveyor at the initial stage of no-load operation can be brought into a guide chute at the tail part of the next belt conveyor of the transfer station due to belt surface accumulated water, the sealing effect of the unpowered dust removal guide chute equipment and the belt surface of the belt conveyor is tight, accumulated water cannot be discharged, even if the belt conveyor is stopped, the accumulated water cannot be discharged out of the belt surface due to the arrangement of the inclination angle on the basis of the belt conveyor, and the normal operation of the belt conveyor is directly. The tail sealing drainage device can solve the problems, when drainage is needed, only the driving part needs to be started to push the push rod assembly to move, the tail check curtain is unfolded through the rotating mechanism, a gap is formed between the tail check curtain and the conveying belt, the drainage function is realized, and the difficulty in drainage is solved. After the drainage is finished, the tail baffle curtain can realize automatic recovery sealing, the sealing effect can be effectively guaranteed when the drainage is not needed, and the dust is prevented from overflowing from the tail of the guide chute.

4. Return belt face belt cleaning device: in the process of transferring a bulk material conveying system, after materials are discharged from a discharging roller, the materials attached to the surface of a conveying belt cannot be cleaned, and the phenomenon is called belt return belt material. The belt return belt material is generated in all belt conveyor systems, and along with the increase of the belt conveyor capacity and the high belt speed, the belt return belt material is increased, which directly causes the harm to the environment, the personnel health and the service life of equipment, and simultaneously increases a large amount of maintenance cost. The device utilizes a small amount of water source to moisten the coal slime adhered to the surface of the return belt through the softening and spraying part with the fan-shaped nozzle, and then the water slime enters the first cleaning part, the second cleaning part, the third cleaning part and the fourth cleaning part, the scraper type cleaning part thoroughly scrapes the materials on the conveying belt by using the scraper made of special materials, the conveying belt is not damaged, the scraped materials can fall into the collector, and the recovery drain outlet is arranged below the collector, so that the materials can be recovered in a centralized manner; after the four cleaning parts, the belt surface of the conveying belt is dried by compressed air through the nozzle of the quick drying part, so that the purposes of removing the adhesive on the conveying belt, ensuring that the return belt does not carry coal and dust in the running process and improving the cleaning effect of the conveying belt are achieved quickly.

5. Intermittent spraying device: in coal conveying system transfer station belt feeder dust suppression control field, there are a lot of dust removals or dust suppression mode, the position of conveyer belt afterbody driven roll has often been neglected to traditional design mode, because conveyer belt bulk cargo transport bulk cargo distance is very far, the return stroke area can be stained with some tiny materials to afterbody cylinder department during operation material, rotate through afterbody cylinder and constantly exert pressure, the granule is compelled to grind into finer dust granule, the afterbody cylinder drives the dust raise when rotating to produce raise dust excessive, pollute the surrounding environment, influence staff physical and mental health. The gap type spraying device is a dust suppression device specially designed for the region, dust suppression is carried out on generated dust through a universal joint spraying assembly arranged at the front center of the tail roller, and the dust flying problem of the tail roller is solved. And owing to there is the setting of switch board, spraying time and interval time can freely be adjusted, can set for spraying time and dwell time according to conveyer belt operating cycle, avoid the too big other accidents that arouse of spraying volume.

Drawings

Fig. 1 is a schematic perspective view of a preferred embodiment of the present invention;

FIG. 2 is a cross-sectional view of a tail seal according to a preferred embodiment of the present invention;

FIG. 3 is a schematic view of the internal structure of the tail seal according to a preferred embodiment of the present invention;

fig. 4 is a schematic perspective view of a tail drain according to a preferred embodiment of the present invention;

FIG. 5 is a side view of a tail drain in accordance with a preferred embodiment of the present invention;

FIG. 6 is a front view of a tail drain in accordance with a preferred embodiment of the present invention;

fig. 7 is a schematic perspective view of a return belt surface cleaning device according to a preferred embodiment of the present invention;

fig. 8 is a side view of a return belt surface cleaning apparatus according to a preferred embodiment of the present invention;

fig. 9 is a front view of a return belt face cleaning apparatus in accordance with a preferred embodiment of the present invention;

fig. 10 is a schematic perspective view of a gap-type spraying device according to a preferred embodiment of the present invention;

fig. 11 is a side view of a gap type spray device according to a preferred embodiment of the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

In the description of the present invention, it should be noted that, for the orientation words, if there are terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and only for the convenience of describing the present invention and simplifying the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and not be construed as limiting the specific scope of the present invention.

As shown in fig. 1 to 11, for a preferred embodiment of the present invention, the chute comprises a chute body 1 and a conveyor belt 2, the chute body 1 comprises a side plate 11, a cover plate 12 and a leg assembly 13, the side plate 11 and the cover plate 12 form a closed cavity, and the side plate and the cover plate are covered on the conveyor belt 2 through the leg assembly 13. Specifically, the method comprises the following steps:

the guide chute body 1 is sequentially provided with a charging barrel 14, a primary circulation pressure relief device 15 and a secondary circulation pressure relief device 16 from back to front, and the guide chute body is also provided with a plurality of damping devices 17.

The rear end of the guide chute body 1 is provided with a tail sealing device 3, the tail sealing device 3 comprises a multi-stage sealing plate assembly 30, the multi-stage sealing plate assembly 30 is arranged inside the rear end of the guide chute body 1 at intervals, the sealing plate assembly 30 comprises a curtain blocking hanging plate 31, a curtain blocking pressing plate 32 and a tail curtain blocking 33, the curtain blocking hanging plate 31 is fixedly arranged in the guide chute body 1, the tail curtain blocking 33 is installed on the curtain blocking hanging plate 31 through the curtain blocking pressing plate 32, the side plates 11 are tightly attached to two sides of the tail curtain blocking 33, and the lower end of the tail curtain blocking 33 is tightly attached to the conveying belt 2.

The sealing plate assembly 30 further comprises an adjusting screw 34, an adjusting nut 35, a guide plate 36 and a guide post 37, the guide post 37 is fixedly arranged on the curtain blocking hanging plate 31, a sliding track 361 is formed in the guide plate 36, the guide plate 36 is arranged on the guide post 37 in a sliding mode along the vertical direction through the sliding track 361, the tail curtain blocking 33 is fixedly arranged on the guide plate 36 through a curtain blocking pressing plate 32, the lower end of the adjusting screw 34 is rotatably arranged on the tail curtain blocking 33, the upper end of the adjusting screw 34 penetrates through the cover plate 12, the adjusting nut 35 is in threaded connection with the adjusting screw 34, and the adjusting nut 35 is located above the cover plate 12; the rear curtain 33 is rotated on the adjusting screw 34 by the adjusting nut 35 to be displaced up and down.

In this embodiment, the tail sealing device 3 includes a three-stage sealing plate assembly 30, the curtain hanging plate 31 is fixedly arranged on the side plate 11 through a bolt assembly 38, and two groups of guide plates 36 and guide posts 37 are symmetrically arranged on two sides of the adjusting screw rod 34; the tail curtain 33 is a rubber damping soft curtain.

The rear end of the guide chute body 1 is also provided with a tail drainage device 4, the tail drainage device 4 comprises a driving part 41, a push rod assembly 42, a pull rod 43, a rotating shaft 44, a rotating frame 45 and a connecting rod 46, the driving part 41 is fixedly arranged on the guide chute body 1, the driving part 41 drives the push rod assembly 42 to stretch and retract along the front-back direction, one end of the pull rod 43 is hinged on the push rod assembly 42, the other end of the pull rod 43 is fixedly arranged at the end part of the rotating shaft 44, the rotating shaft 44 is rotatably arranged on the guide chute body 1, the rotating frame 45 is fixedly arranged on the rotating shaft 44, the pull rod 43, the rotating shaft 44 and the rotating frame 45 are provided with a plurality of groups and correspond to the multi-stage sealing plate assemblies 30 one by one, and; the driving unit 41 is operated to drive the rotating frame 45 to turn over by the linkage of the push rod assembly 42, the pull rod 43, the rotating shaft 44 and the connecting rod 46, and is used to lift the tail curtain 33, so that a gap is formed between the tail curtain 33 and the conveyor belt 2. The driving part 41 is a stepping motor in this embodiment.

The front end of the conveying belt 2 is provided with a return belt surface cleaning device 5, the return belt surface cleaning device 5 comprises a fixed frame 51, a collector 52, a belt surface leveling component 53, a softening spraying component 54, a cleaning component 55 and a quick drying component 56, the fixed frame 51 is arranged at the lower part of the conveying belt 2, the return conveying belt 2 passes through the fixed frame 51, the collector 52 is fixedly arranged below the fixed frame 51 and is used for collecting collected sewage mixture, the belt surface leveling component 53 is arranged on the fixed frame 51, the conveying belt 2 passes through the belt surface leveling component 53 and forms a plane, the softening spraying component 54 is arranged at the front end of the fixed frame 51, the softening spraying component 54 can spray water mist to the conveying belt 2, the quick drying component 56 is arranged at the rear end of the fixed frame 51, the quick drying component 56 can blow the conveying belt 2 at high pressure, the cleaning component 55 is arranged at the middle section of the fixed frame 51 and is, the sweeping member 55 may scrape against the conveyor belt 2.

A buffer component 57 is arranged between the cleaning component 55 and the fixed frame 51, a torsion spring is arranged in the buffer component 57, and the buffer component 57 forces the cleaning component 55 to abut against the conveying belt. The belt surface leveling component 53 comprises three parallel press rollers 531, one press roller 531 is arranged on the upper side of the fixed rack, two press rollers 531 are arranged on the lower side of the fixed rack, and the conveying belt 2 can be tightly attached and penetrated between the upper press roller and the lower press roller. The cleaning component 55 is provided with a scraper 551, and the included angle between the scraper 551 and the conveyer belt 2 is about 70 degrees; the number of cleaning members 55 is four, and the four cleaning members 55 are spaced apart from each other.

The rear end of the conveying belt 2 is provided with a tail roller 21, the rear end of the conveying belt 2 is provided with an interval type spraying device 6, the interval type spraying device 6 comprises a supporting rack 61, a cross beam 62, a nozzle 63, a water pipe 64 and a control cabinet 65, the supporting rack 61 is fixedly arranged, the conveying belt 2 penetrates through the supporting rack 61, the cross beam 62 is transversely and fixedly arranged on the supporting rack 61, the cross beam 62 is located in front of the tail roller 21, the nozzle 63 is fixedly arranged on the cross beam 62, the water pipe 64 is connected with the nozzle 63 and the control cabinet 65, an electromagnetic valve is arranged in the control cabinet 65 and controls water inlet of the water pipe, and the nozzle 63 can spray water mist to. The nozzle 63 is a universal joint spray assembly.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (4)

1. The utility model provides a return belt face belt cleaning device which characterized in that: the device comprises a fixed frame, a collector, a belt surface leveling component, a softening spraying component, a cleaning component and a quick drying component, wherein the fixed frame is arranged at the lower part of the conveying belt, the conveying belt in return pass through the fixed frame, the collector is fixedly arranged below the fixed frame and used for collecting sewage mixture collected under the belt surface, the belt surface leveling component is arranged at the rear end of the fixed frame, the conveying belt passes through the belt surface leveling component and forms a plane, the softening spraying component is arranged at the front end of the fixed frame and can spray water mist to the conveying belt, the quick drying component is arranged at the rear end of the fixed frame and can sweep the conveying belt at high pressure, and the cleaning component is arranged at the middle section of the fixed frame and is positioned between the softening spraying component and the quick drying component, the cleaning component can press against the conveying belt to perform scraping.

2. The return belt surface cleaning apparatus according to claim 1, wherein: clean the part with be provided with buffering subassembly between the fixed frame, the torsional spring has in the buffering subassembly, buffering subassembly forces clean the part and contradict the conveyer belt.

3. The return belt surface cleaning apparatus according to claim 1, wherein: the belt surface leveling component comprises three parallel compression rollers, one compression roller is arranged on the upper side of the fixed rack, the other compression roller is arranged on the lower side of the fixed rack, and the conveying belt can be tightly attached and penetrated between the upper compression roller and the lower compression roller.

4. The return belt surface cleaning apparatus according to claim 1, wherein: a scraper is arranged on the sweeping component, and an included angle between the scraper and the conveying belt is 60-80 degrees; the number of the cleaning components is four, and the four cleaning components are distributed at intervals.

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