A conveyor belt coal slime cleaning device

Abstract

The present invention discloses a conveyor belt coal slime cleaning device in the technical field of coal mine belt transportation equipment, comprising a frame, a main rotating shaft, a scraper unit installed at the main rotating shaft and a driving unit installed at the frame, wherein the driving unit can drive the main rotating shaft to rotate; the present application has no requirements for selecting the belt, overcomes the unevenness of the belt, quickly cleans the stubborn coal slime sticking in the belt groove, and highly cleans the belt; prolongs the service life of the belt, reduces the labor intensity of maintenance personnel, and improves the safety and stability of enterprise production; does not require a motor, fully utilizes the power friction of the original belt conveyor, drives the oil pump to work fully automatically, generates pressure and provides kinetic energy; the piano-key type scraper can completely fit the belt and clean the belt without dead angles; the intelligent pressure sensing system and pressure balance effectively protect the force of the scraper fitting the belt.

Description

Technical Field

[0001] The present application belongs to the technical field of coal mine belt conveyor equipment, and in particular relates to a conveyor belt coal slime cleaning device. Background Art

[0002] Belt conveyors are popular among users in coal mines and iron mines for their simplicity, convenience, speed and durability. They play an important role in transportation in coal mining enterprises.

[0003] To measure the functional working condition of the belt conveyor in a coal mining enterprise, the enterprise needs a belt conveyor to transport the coal to a fixed point from the time the coal is mined underground, and then it is lifted out of the coal bunker on the surface by the hoist, and then it is transported to some required places by the conveyor for selection and cleaning. All links are inseparable from the working condition of the belt conveyor, and the belt conveyor plays an important role in the coal mine. Since the coal mined underground contains various components, and some coal seams contain too much water, which makes the coal full of stickiness, the coal fragments will inevitably stick to the belt when the belt is transporting the coal, and the belt conveyor is running at a high speed, and there is no chance for the fragments to fall quickly. This will cause the coal bath to become thicker and thicker after multiple rolling of the pulley, which will cause the belt to lose balance and deviate. It will cause serious consequences, such as loosening of the tensioning screws, slipping of the belt, serious wear of the belt deviation, sudden belt breakage and other serious consequences, which will have a serious impact on production safety.

[0004] In order to solve the above problems, belt manufacturers and some companies that research belt conveyors are also constantly innovating and researching, and have invented various belt cleaning equipment to clean the residue on the belt, such as the most advanced scraper type cleaner. This product is installed below the discharge port of the belt driven wheel. The scraper uses a spring to press against the belt surface. After the belt is discharged, the scraper scrapes off the sticky coal on the belt to achieve the cleaning purpose. However, this function must be normal when the belt and the cleaner are new products. After a period of time, due to some wear and tear of the belt during coal transportation, the thickness of the belt varies, and the scraper surface is increasingly worn during use, and the coal ash on the pit surface of the belt cannot be cleaned, and eventually loses its effect.

[0005] Some manufacturers have also invented a brush cleaner, which uses a motor to drive a circular brush to rotate at high speed, and uses the brush surface to clean the sticky objects on the belt surface. It can also achieve the cleaning purpose, but because the brush cannot be too hard, it cannot clean it cleanly. At the same time, the service life of the brush is too short. Frequent replacement in a short period of time increases the labor intensity of workers and also affects production efficiency. Summary of the invention

[0006] Purpose of the invention: This application aims to solve the problems mentioned in the above background technology and proposes a conveyor belt coal slime cleaning device.

[0007] Technical solution: A conveyor belt coal slime cleaning device includes a frame, a main rotating shaft, a scraper unit installed at the main rotating shaft, and a driving unit installed at the frame, wherein the driving unit can drive the main rotating shaft to rotate.

[0008] Preferably, the driving unit comprises a hydraulic oil tank, a high-pressure oil pump, a pressure-building valve group, a tensioning oil cylinder, and a pressure sensor for detecting the pressure in the accumulator.

[0009] Preferably, an accumulator is also connected to the pressure building valve group, the pressure sensor is used to detect the pressure in the accumulator, the pressure building valve group includes a pilot relief valve, a first one-way valve and a second one-way valve, the hydraulic oil tank, the high-pressure oil pump, the pilot relief valve, the first one-way valve and the accumulator are connected in sequence through an oil circuit, and the accumulator, the second one-way valve and the tensioning cylinder are connected in sequence through an oil circuit.

[0010] The high-pressure oil pump sends the hydraulic oil to the pressure-building valve group, builds up pressure through the pilot relief valve, then enters the accumulator through the first one-way valve, and from the accumulator through the second one-way valve to finally enter the tensioning cylinder to work; the pilot relief valve is a hydraulic component. After the hydraulic oil is sucked in and output by the oil pump, the rated output pressure of the oil pump is generated, which is balanced and reduced by the pilot relief valve to build up the pressure required by the equipment.

[0011] The accumulator is an energy storage device in the hydraulic and pneumatic system. It converts the energy in the system into compression energy or potential energy and stores it at the right time. When the system needs it, it converts the compression energy or potential energy into hydraulic or air pressure energy and releases it to replenish the system.

[0012] The accumulator and the tensioning cylinder are connected. During normal operation, the oil pressure in the accumulator and the tensioning cylinder is equal, and is equal to the reaction force of the belt on the blade body. When the blade body encounters a large obstacle and dodges downward, the pressure in the tensioning cylinder is greater than the pressure in the accumulator. If a one-way valve is not set here, the hydraulic oil will flow back into the accumulator, but the blade body will return to its original state after a short dodge, and the hydraulic oil will flow back into the tensioning cylinder, which will affect the detection of the pressure sensor. In order to avoid the above situation, a second one-way valve is set here. When the blade body or the belt is worn, the telescopic end of the tensioning cylinder extends, and the pressure in the tensioning cylinder drops. The accumulator releases the stored compression energy or potential energy and resupplies the tensioning cylinder to balance the pressure at both ends.

[0013] Preferably, the high-pressure oil pump is externally connected to a driven wheel via an electromagnetic clutch, and the driven wheel is in contact with a conveyor belt and is driven by the conveyor belt;

[0014] The driven wheel and the high-pressure oil pump are linked and separated by controlling the engagement and disengagement of the electromagnetic clutch.

[0015] Preferably, the oil inlet end of the high-pressure oil pump is connected to the hydraulic oil tank.

[0016] Preferably, the pressure building valve group further includes a safety valve, the safety valve is connected between the second one-way valve and the tensioning cylinder, and the other end of the safety valve is connected to the hydraulic oil tank;

[0017] When the pressure sensor fails, the high-pressure oil pump continues to deliver hydraulic oil, resulting in excessive oil pressure that exceeds the safety oil pressure of the safety valve. The safety valve opens and discharges the excess hydraulic oil into the hydraulic oil tank to prevent safety accidents.

[0018] Preferably, both ends of the main rotating shaft are installed on the frame through bearing seats and bearings, a push arm is fixedly connected to the main rotating shaft, the telescopic end of the tensioning cylinder is hinged to the push arm, and the fixed end of the tensioning cylinder is hingedly installed on the frame.

[0019] Preferably, the blade unit includes a blade body, a blade mounting frame, an upper rotating arm, a buffer spring, a lower connecting arm and a movable support, the movable support and the lower rotating arm are both fixedly connected to the main rotating shaft, the upper rotating arm is rotatably connected to the movable support, the buffer spring is located between the upper rotating arm and the lower rotating arm, the blade mounting frame is installed at the upper rotating arm, and the blade body is installed at the blade mounting frame.

[0020] A buffer spring is arranged between the upper rotating arm and the lower connecting arm, so as to ensure that the scraper can remove most of the dirt on the belt, and when encountering some tightly bound and hard dirt, the scraper has space to avoid downwards;

[0021] Preferably, the lower rotating arm is L-shaped; a spring fixing seat is provided at the bottom of the upper rotating arm, a threaded hole is provided at the lower connecting arm, a tightening hollow bolt passing through the threaded hole is provided at the threaded hole, a blind hole is provided at the stud of the tightening hollow bolt, and the buffer spring is connected between the spring fixing seat and the blind hole.

[0022] In some embodiments, the upper rotating arm is rotatably connected to the movable support via a rotating arm pin.

[0023] In other embodiments, the upper rotating arm is hinged to the movable support.

[0024] One end of the buffer spring is fixed in the spring fixing seat, and the other end abuts against the inner wall of the blind hole of the tightening hollow bolt. Rotating the tightening hollow bolt can tighten or loosen the buffer spring, thereby controlling the thrust of the buffer spring on the upper rotating arm.

[0025] Preferably, the buffer spring is fixed to the inner wall of the spring fixing seat by means of fixing screws.

[0026] Preferably, the upper rotating arm has an outer sleeve, and a blade mounting frame is installed on the outer sleeve. The blade mounting frame includes two clamping plates, a connecting block connecting the two clamping plates, and a fixing column fixedly connected to the connecting block. The fixing column is installed on the outer sleeve and fixed by bolts. The blade body is installed between the two clamping plates, and there is a gap between the blade body and the connecting block.

[0027] Preferably, the blade body is installed between two clamping plates via a blade body pin.

[0028] Preferably, the blade body is rectangular;

[0029] There is a gap between the scraper body and the connecting block, so that the scraper body can swing slightly left and right between the two clamping plates, so that it can get closer to the belt.

[0030] The lower connecting arm is fixedly connected to the main rotating shaft, and the telescopic end of the tensioning cylinder can control the rotation angle of the lower connecting arm, and then transmit the force to the upper rotating arm through the buffer spring. The upper rotating arm is hinged on the movable support, and combined with the setting of the buffer spring, it provides a downward buffer distance for the shovel blade to prevent the shovel blade from being damaged by hard objects.

[0031] Preferably, there are multiple scraper units, and the multiple scraper units are divided into two rows, namely a front row scraper unit and a rear row scraper unit. The number of the front row scraper units and the rear row scraper units differs by one, and the multiple front row scraper units and the multiple rear row scraper units are staggered.

[0032] Preferably, the blade unit comprises a blade body, a plurality of front-row blade units are distributed at equal intervals, the interval between the blade bodies of two adjacent front-row blade units is a first interval, a plurality of rear-row blade units are distributed at equal intervals, the interval between the blade bodies of two adjacent rear-row blade units is a second interval, the width of the blade body of the front-row blade unit is greater than the second interval, and the width of the blade body of the rear-row blade unit is greater than the first interval;

[0033] By arranging multiple scraper units in two rows and distributing them in a staggered manner to form a structure similar to piano keys, and with overlapping parts between the two rows of scraper units, every part of the belt can be contacted by the scraper, thereby achieving more thorough cleaning.

[0034] A conveying device comprises a conveying device body and any one of the above-mentioned conveying belt coal slime cleaning devices; the conveying device body comprises a conveying belt.

[0035] Beneficial effects: 1. This application does not have any selection requirements for the belt, overcomes the unevenness of the belt, quickly cleans the stubborn coal slime in the belt groove, and highly cleans the belt. It extends the service life of the belt, reduces the labor intensity of maintenance personnel, and improves the safety and stability of enterprise production;

[0036] 2. This application does not require a motor, but fully utilizes the power friction of the original belt conveyor to drive the oil pump to work fully automatically, generating pressure to provide kinetic energy.

[0037] 3. The piano-key type scraper can fit the belt perfectly and clean the belt without any dead angle.

[0038] 4. Intelligent pressure sensing system, balanced pressure effectively protects the blade's contact with the belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic diagram of the structure of this application;

[0040] Figure 2 It is a schematic diagram of the partially disassembled structure of two scraper units of the present application;

[0041] Figure 3 It is a schematic diagram of the side structure of the blade body and the blade mounting frame;

[0042] Figure 4 It is a front structural schematic diagram of the blade body and the blade mounting frame;

[0043] Figure 5 It is a schematic diagram of the disassembled structure of the spring fixing seat, the tightening hollow bolt and the buffer spring;

[0044] Figure 6 This is a schematic diagram of the installation structure of the blade unit from above (for the sake of clarity, the push arm is in the unfolded state, not in the normal working state);

[0045] Figure 7 It is a front structural schematic diagram of the installation structure of the scraper unit;

[0046] Figure 8 is a schematic diagram of the drive unit structure;

[0047] Fig. 9 This is a schematic diagram of the oil circuit connection of the drive unit;

[0048] Figure numerals: 1, blade unit; 1.1, blade body; 1.2, blade mounting frame; 1.2.1, clamping plate; 1.2.2, connecting block; 1.2.3, fixing column; 1.2.4, blade body pin; 1.3, upper rotating arm; 1.3.1, outer sleeve; 1.3.2, spring fixing seat; 1.3.3, rotating arm pin; 1.4, buffer spring; 1.5, lower connecting arm; 1.5.1, threaded hole; 2, main rotating Shaft; 3. Tensioning cylinder; 4. High-pressure oil pump; 5. Pressure-building valve group; 5.1. Pilot relief valve; 5.2. First non-return valve; 5.3. Second non-return valve; 5.4. Safety valve; 6. Accumulator; 7. Electromagnetic clutch; 8. Driven wheel; 9. Hydraulic oil tank; 10. Pressure sensor; 11. Bearing seat; 12. Push arm; 13. Tightening hollow bolt; 13.1. Blind hole; 14. Movable support; 15. Conveyor belt; 16. Frame. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] Example 1: Figure 1-9 As shown: a conveyor belt coal slime cleaning device, including a frame 16, a main rotating shaft 2, a scraper unit 1 installed at the main rotating shaft 2 and a driving unit installed at the frame 16, wherein the driving unit can drive the main rotating shaft 2 to rotate.

[0051] The drive unit includes a hydraulic oil tank 9, a high-pressure oil pump 4, a pressure-building valve group 5, a tensioning cylinder 3 and a pressure sensor 10. The pressure-building valve group 5 is also connected to an accumulator 6. The pressure sensor 10 is used to detect the pressure in the accumulator 6. The pressure-building valve group 5 includes a pilot relief valve 5.1, a first one-way valve 5.2 and a second one-way valve 5.3. The hydraulic oil tank 9, the high-pressure oil pump 4, the pilot relief valve 5.1, the first one-way valve 5.2 and the accumulator 6 are connected in sequence through an oil circuit, and the accumulator 6, the second one-way valve 5.3 and the tensioning cylinder 3 are connected in sequence through an oil circuit. The high-pressure oil pump 4 is externally connected to a driven wheel 8 through an electromagnetic clutch 7, and the driven wheel 8 is in contact with a conveying belt 15 and is driven by the conveying belt 15; the oil inlet end of the high-pressure oil pump 4 is connected to a hydraulic oil tank 9; the safety valve 5.4 is connected between the second one-way valve 5.3 and the tensioning cylinder 3, and the other end is connected to the hydraulic oil tank 9; both ends of the main rotating shaft 2 are installed on the frame 16 through a bearing seat 11 and a bearing, and a push arm 12 is fixedly connected to the main rotating shaft 2, the telescopic end of the tensioning cylinder 3 is hinged to the push arm 12, and the fixed end of the tensioning cylinder 3 is hingedly installed on the frame 16; the blade unit 1 includes a blade body 1.1, a blade mounting frame 1.2, an upper rotating arm 1.3, a buffer spring 1.4, a lower connecting arm 1.5 and a movable support 14, the The movable support 14 and the lower rotating arm are both fixedly connected to the main rotating shaft 2, the upper rotating arm 1.3 is rotatably connected to the movable support 14, the buffer spring 1.4 is located between the upper rotating arm 1.3 and the lower rotating arm, the shovel blade mounting frame 1.2 is installed at the upper rotating arm 1.3, and the shovel blade body 1.1 is installed at the shovel blade mounting frame 1.2; the lower rotating arm is L-shaped; a spring fixing seat 1.3.2 is provided at the bottom of the upper rotating arm 1.3, a threaded hole 1.5.1 is provided at the lower connecting arm 1.5, a tightening hollow bolt 13 passing through the threaded hole 1.5.1 is provided at the threaded hole 1.5.1, and a blind hole 13.1 is provided at the stud of the tightening hollow bolt 13, and the buffer spring 1.4 is connected between the spring fixing seat 1.3.2 and the blind hole 13.1;

[0052] The upper rotating arm 1.3 is rotatably connected to the movable support 14 via a rotating arm pin 1.3.3.

[0053] The buffer spring 1.4 is fixed to the inner wall of the spring fixing seat 1.3.2 by fixing screws; the upper rotating arm 1.3 has an outer sleeve 1.3.1, and a blade mounting frame 1.2 is installed on the outer sleeve 1.3.1, and the blade mounting frame 1.2 includes two clamping plates 1.2.1, a connecting block 1.2.2 connecting the two clamping plates 1.2.1, and a fixing column 1.2.3 fixedly connected to the connecting block 1.2.2, the fixing column 1.2.3 is installed at the outer sleeve 1.3.1 and fixed by bolts, the blade body 1.1 is installed between the two clamping plates 1.2.1, and there is a gap between the blade body 1.1 and the connecting block 1.2.2; the blade body 1.1 is installed between the two clamping plates 1.2.1 through the blade body pin 1.2.4; the blade body 1.1 is rectangular; the blade body 1.1 and the connecting block 1. 2.2, so that the blade body 1.1 can swing slightly left and right between the two clamping plates 1.2.1, so that it can get closer to the belt; the blade unit 1 has multiple, and the multiple blade units 1 are divided into two rows, namely the front blade unit and the rear blade unit, the number of the front blade units and the rear blade units differs by one, and the multiple front blade units and the multiple rear blade units are staggered; the blade unit 1 includes a blade body 1.1, the multiple front blade units are distributed at equal intervals, and the interval between the blade bodies 1.1 of two adjacent front blade units is a first interval, the multiple rear blade units are distributed at equal intervals, and the interval between the blade bodies 1.1 of two adjacent rear blade units is a second interval, the width of the blade body 1.1 of the front blade unit is greater than the second interval, and the width of the blade body 1.1 of the rear blade unit is greater than the first interval.

[0054] Example 2

[0055] In Example 2, a conveying device is also disclosed, including a conveying device body and a conveying belt coal slime cleaning device; the conveying device body includes a conveying belt 15; the conveying belt coal slime cleaning device is the conveying belt coal slime cleaning device disclosed in Example 1.

[0056] Working principle: driven by the friction of the belt, the driven wheel rotates synchronously, and the driven wheel is connected to the high-pressure oil pump through an electromagnetic clutch. The PLC control system installed on the frame controls the clutch of the electromagnetic clutch to control the linkage and separation of the driven wheel and the high-pressure oil pump. When the electromagnetic clutch works to make the driven wheel and the high-pressure oil pump linked, the high-pressure oil pump extracts hydraulic oil from the hydraulic oil tank, and builds pressure through the pressure-building valve group to fill the accumulator with hydraulic oil. When the pressure sensor detects that the pressure in the accumulator reaches the set upper limit, it sends a signal to the PLC control system to control the separation of the electromagnetic clutch, so that the high-pressure oil pump stops pumping oil. At this time, the oil pressure in the accumulator reaches the set value, and the accumulator is connected to the tensioning cylinder. The pressure in the tensioning cylinder is consistent with the pressure of the accumulator. The telescopic end of the tensioning cylinder is connected to the main rotating shaft through the push arm, so that it can drive the blade unit connected to the main rotating shaft, so that the blade abuts against the belt with appropriate force, thereby removing stubborn dirt on the belt. At this time, the reaction force of the belt to the blade is transmitted The telescopic end of the tensioning cylinder and the oil pressure inside the tensioning cylinder (i.e., the oil pressure in the connecting oil circuit between the second one-way valve and the tensioning cylinder) reach a balanced state. The accumulator and the tensioning cylinder are connected by a second one-way valve. The oil pressure between the tensioning cylinder and the accumulator can be kept consistent, that is, consistent with the compression energy in the accumulator. At the same time, it can also prevent the hydraulic oil in the tensioning cylinder from flowing back when the blade is subjected to downward pressure. However, with the increase of usage time, the conveyor belt will wear out, and the blade body will also wear out. The pressure balance at both ends of the tensioning cylinder is broken, the telescopic end extends forward, and the accumulator replenishes hydraulic oil into the tensioning cylinder, so that the forces on both sides of the tensioning cylinder are balanced, until the pressure sensor detects that the pressure in the accumulator is lower than the set lower limit, that is, when the pressure in the accumulator is insufficient, a signal is sent to the PLC control system, and the PLC control system controls the electromagnetic clutch so that the driven wheel can drive the high-pressure oil pump to fill the accumulator with hydraulic oil, so that the tensioning cylinder can have enough pressure to press the blade body against the belt, and so on.

[0057] A buffer spring is arranged between the upper rotating arm and the lower connecting arm. The upper rotating arm is hinged on the movable support, the movable support is fixed on the main rotating shaft, and the lower connecting arm is fixed on the main rotating shaft. The shovel blade is pressed against the conveyor belt by the elastic force of the buffer spring, so as to shovel off the dirt on the conveyor belt. During the long-term operation of the conveyor belt, the surface will have potholes and unevenness due to the wear of the coal. In view of the principle of giving priority to protecting the belt, when the shovel blade is suddenly raised from the worn low surface of the conveyor belt to the high surface of the belt during the operation of the conveyor belt, the buffer spring will be squeezed downward, thereby avoiding these impact forces and preventing damage to the shovel blade and the belt. In addition, due to the wear of coal, the conveyor belt may be low in the middle and high on both sides. Multiple blade units are staggered and arranged in a structure similar to piano keys. In this way, every part of the conveyor belt can be touched by the blade, thereby cleaning it more thoroughly. At the same time, the blade is movably connected between the two clamping plates through the blade body pin, and there is a gap between the blade and the connecting block. The blade can have a small amount of space to swing left and right in the direction facing the blade, so that the blade can better fit the belt.

[0058] Although the present invention has been illustrated and described with respect to the preferred embodiments, it will be appreciated by those skilled in the art that various changes and modifications may be made to the present invention without departing from the scope of the present invention as defined by the claims.

Claims

1. A conveyor belt coal slime cleaning device, characterized in that: It comprises a frame, a main rotating shaft, a scraper unit installed at the main rotating shaft, and a driving unit installed at the frame, wherein the driving unit can drive the main rotating shaft to rotate; The drive unit includes a hydraulic oil tank, a high-pressure oil pump, a pressure-building valve group, a tensioning oil cylinder and a pressure sensor. The pressure-building valve group is also connected to an accumulator. The pressure sensor is used to detect the pressure in the accumulator. The pressure-building valve group includes a pilot relief valve, a first check valve and a second check valve. The hydraulic oil tank, the high-pressure oil pump, the pilot relief valve, the first check valve and the accumulator are connected in sequence through an oil circuit. The accumulator, the second check valve and the tensioning oil cylinder are connected in sequence through an oil circuit. The high-pressure oil pump is externally connected to a driven wheel via an electromagnetic clutch, and the driven wheel is in contact with a conveying belt and is driven by the conveying belt; The two ends of the main rotating shaft are installed on the frame through bearing seats and bearings, a push arm is fixedly connected to the main rotating shaft, the telescopic end of the tensioning oil cylinder is hinged to the push arm, and the fixed end of the tensioning oil cylinder is hingedly installed on the frame; The blade unit includes a blade body, a blade mounting frame, an upper rotating arm, a buffer spring, a lower connecting arm and a movable support. The movable support and the lower rotating arm are both fixedly connected to the main rotating shaft. The upper rotating arm is rotatably connected to the movable support. The buffer spring is located between the upper rotating arm and the lower rotating arm. The blade mounting frame is installed at the upper rotating arm, and the blade body is installed at the blade mounting frame.

2. The conveyor belt coal slime cleaning device according to claim 1, characterized in that: The lower rotating arm is L-shaped; a spring fixing seat is provided at the bottom of the upper rotating arm, a threaded hole is provided at the lower connecting arm, a tightening hollow bolt passing through the threaded hole is provided at the threaded hole, a blind hole is provided at the stud of the tightening hollow bolt, and the buffer spring is connected between the spring fixing seat and the blind hole.

3. The conveyor belt coal slime cleaning device according to claim 1, characterized in that: The upper rotating arm is provided with an outer sleeve, on which a blade mounting frame is installed, the blade mounting frame includes two clamping plates, a connecting block connecting the two clamping plates, and a fixing column fixedly connected to the connecting block, the fixing column is installed at the outer sleeve and fixed by bolts, the blade body is installed between the two clamping plates, and there is a gap between the blade body and the connecting block; the blade body is installed between the two clamping plates by a blade body pin shaft.

4. The conveyor belt coal slime cleaning device according to claim 1, characterized in that: There are multiple scraper units, and the multiple scraper units are divided into two rows, namely a front scraper unit and a rear scraper unit. The number of the front scraper unit and the rear scraper unit differs by one, and the multiple front scraper units and the multiple rear scraper units are staggered.

5. The conveyor belt coal slime cleaning device according to claim 4, characterized in that: The blade unit includes a blade body, a plurality of front-row blade units are distributed at equal intervals, the interval between the blade bodies of two adjacent front-row blade units is a first interval, a plurality of rear-row blade units are distributed at equal intervals, the interval between the blade bodies of two adjacent rear-row blade units is a second interval, the width of the blade body of the front-row blade unit is greater than the second interval, and the width of the blade body of the rear-row blade unit is greater than the first interval.

6. A conveying device, characterized in that: It comprises a conveying device body and a conveying belt coal slime cleaning device as claimed in any one of claims 1 to 5; the conveying device body comprises a conveying belt.

Images