Detachable belt conveyor roller cleaning device for coal mine

Abstract

The utility model belongs to the field of coal mine equipment, and provides a detachable belt conveyor roller cleaning device for a coal mine, which comprises a rack of a belt conveyor and rollers mounted at two ends of the rack and used for driving and supporting a belt, and further comprises a cleaning assembly arranged on the rack and used for cleaning the rollers and the belt and comprising a cleaning box, a dust receiving opening is formed in the side, close to the roller, of the cleaning box, roller cutter grooves are formed in the two sides of the dust receiving opening, a dust inlet is formed in the bottom face of the dust receiving opening, and belt cutter grooves are formed in the two sides of the dust inlet. Through the design of the roller cutter groove and the belt cutter groove in the cleaning box, the insertion position of the scraper can be adjusted and replaced according to the movement direction of a roller and a belt at the two ends of the belt conveyor relative to the cleaning box, it is guaranteed that the scraper is tangent to the roller and the belt, bidirectional cleaning of the roller and the belt is achieved, and impurities such as coal slime are effectively removed; the scraper adopts a detachable design, so that the maintenance is convenient, the downtime is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of coal mining equipment, specifically a detachable belt conveyor roller cleaning device for coal mines. Background Technology

[0002] As a core transport equipment in coal mining operations, the stable operation of belt conveyors directly determines coal production efficiency. However, the harsh environment underground, characterized by high humidity and dust, makes it extremely easy for impurities such as coal slurry and coal dust to adhere to the surface of the conveyor drums and belts. The continuous accumulation of these impurities not only causes belt slippage and misalignment, reducing transport efficiency, but also accelerates equipment wear, increases operating resistance, and results in significant energy consumption.

[0003] Currently, the coal mining industry commonly uses manual cleaning and fixed scraper cleaning devices to clean the surface of drums. Manual cleaning is not only inefficient but also poses safety hazards such as falling objects and slipping in the complex underground environment. Fixed scraper cleaning devices, due to their fixed structure, are difficult to adapt to various drum diameters and belt conveyor models, requiring complete replacement during equipment upgrades, resulting in significant resource waste. Furthermore, existing scrapers are mostly fixedly installed, making it impossible to flexibly adjust the scraping angle according to drum wear and belt running direction, thus failing to meet the cleaning effect required for efficient coal mine production. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a detachable belt conveyor roller cleaning device for coal mines, which solves the problems of low efficiency and poor adaptability of existing manual and fixed scraper cleaning methods.

[0005] A detachable belt conveyor roller cleaning device for coal mines includes a belt conveyor frame and rollers installed at both ends of the frame for driving and supporting the belt, and further includes:

[0006] A cleaning assembly, mounted on the frame, is used to clean the rollers and belts. It includes a cleaning box, a dust collection port on the side of the cleaning box near the rollers, roller cutter grooves on both sides of the dust collection port, a dust inlet on the bottom surface, and belt cutter grooves on both sides of the dust inlet.

[0007] A detachable scraper is disposed inside one of the roller cutter grooves and one of the belt cutter grooves, and the two scrapers are respectively tangent to the surfaces of the roller and the belt, and are located on the side opposite to the running direction;

[0008] A vacuum hose is installed inside the cleaning box;

[0009] A collection component, connected to the end of the suction pipe, is used for negative pressure suction to collect dust.

[0010] Preferably, the cleaning box includes a box body and connecting ears. The box body is located inside the belt, and the connecting ears are located at both ends of the box body and have mounting holes for connecting to the frame by bolts.

[0011] Preferably, the ash inlet and ash outlet are both located on the housing, the dust suction pipe is located between the ash inlet and the ash outlet, and the dust suction pipe is provided with several dust suction ports for sucking up and cleaning dust inside the housing.

[0012] Preferably, the scraper includes a T-shaped plate, a scraper blade, and a pad. The scraper blade is detachably mounted on the T-shaped plate and has a double-edged design with an isosceles trapezoidal structure. The pad is stacked between the scraper blade and the T-shaped plate and has a wedge-shaped design for adjusting the tilt angle of the scraper blade.

[0013] Preferably, the T-shaped plates are respectively inserted into the corresponding roller cutter groove and belt cutter groove to realize the detachable installation of the scraper.

[0014] Preferably, the collection assembly includes a guide pipe, a bag filter, an air extraction pipe, and an air pump connected in sequence. The guide pipe is connected to the suction pipe to create negative pressure inside the bag filter to draw in and filter dust.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The uniquely designed roller and belt cutter grooves on the cleaning box of this utility model allow for flexible adjustment and replacement of the scraper insertion position according to the movement direction of the conveyor rollers and belts. This ensures that the scraper blades are always tangent to the surfaces of the rollers and belts, achieving bidirectional and efficient cleaning and effectively removing stubborn coal slime impurities. Simultaneously, the scraper blades' position and tilt angle can be adjusted by adding or removing shims, adapting to rollers of various diameters. Furthermore, the scraper blades, designed with a double-edged isosceles trapezoidal structure, can switch to the other cutting edge after one edge wears down, extending service life and reducing maintenance costs. Its detachable design facilitates quick maintenance, significantly reducing downtime and substantially improving production efficiency.

[0017] 2. The collection component and the suction pipe of this utility model work together to create negative pressure in the bag filter using an air pump. The mineral powder in the cleaning box is quickly sucked into the filter through the suction port on the suction pipe. The bag filter efficiently intercepts the powder, which can effectively prevent dust from flying, improve the underground working environment, and protect the health and safety of workers. Attached Figure Description

[0018] Figure 1 This is a first-view perspective three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a front view structural diagram of the present utility model;

[0020] Figure 3 This is a schematic diagram of the rear view structure of this utility model;

[0021] Figure 4 This is a first-view perspective three-dimensional structural diagram of the cleaning box in this utility model;

[0022] Figure 5 This is a second-view perspective three-dimensional structural diagram of the cleaning box in this utility model.

[0023] In the picture:

[0024] 1. Frame; 2. Roller; 3. Belt; 4. Cleaning assembly; 401. Cleaning box; 4011. Box body; 4012. Connecting ear; 402. Suction pipe; 403. Scraper; 4031. T-shaped plate; 4032. Gasket; 4033. Scraper blade; 5. Collection assembly; 501. Bag filter; 502. Guide pipe; 503. Exhaust pipe; 504. Exhaust pump; 6. Suction port; 7. Roller blade groove; 8. Belt blade groove; 9. Ash inlet; 10. Ash receiving port. Detailed Implementation

[0025] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0026] As attached Figure 1 To be continued Figure 5 As shown:

[0027] This utility model provides a detachable belt conveyor roller cleaning device for coal mines, including a frame 1 and rollers 2 installed at both ends of the frame 1 for driving and supporting the belt 3. A cleaning assembly 4 is provided on the frame 1, the cleaning assembly 4 including a cleaning box 401, a scraper 403 and a suction pipe 402 are provided on the cleaning box 401, and a collection assembly 5 is connected to the end of the suction pipe 402.

[0028] As attached Figure 1 To be continued Figure 3 As shown: Frame 1 serves as the basic support structure for the belt conveyor and is typically fixed to the coal mine surface or in the roadway. It provides the mounting foundation for the entire cleaning device and supports the operation of rollers 2 and belts 3.

[0029] As attached Figure 1 To be continued Figure 3 As shown: Rollers 2 are mounted at both ends of the frame 1 and connected to the frame 1 via bearings, allowing them to rotate freely. They drive and support the belt 3, enabling the conveying of coal. The belt 3 wraps around the two rollers 2 and is driven by the rollers 2 to carry and convey coal.

[0030] As attached Figure 1 To be continued Figure 5As shown: The cleaning component 4 includes a cleaning box 401. The box body 4011 of the cleaning box 401 is bolted to the frame 1 through the mounting holes on the connecting lug 4012. The mounting holes are spaced 150mm apart and are fixed with M10×30 bolts to ensure that the parallelism error between the box body 4011 and the roller axis is ≤0.5°.

[0031] As attached Figure 2 To be continued Figure 5 As shown: A ash inlet 10 is provided on the side of the housing 4011 near the roller 2. Roller cutter grooves 7 are symmetrically located on both sides of the ash inlet 10. An ash inlet 9 is provided on the side of the housing 4011 near the roller 2. Belt cutter grooves 8 are symmetrically located on both sides of the ash inlet 9. The T-shaped plate 4031 is sized to match the roller cutter grooves 7 and belt cutter grooves 8. The cutter grooves corresponding to the T-shaped plate 4031 can be selected according to the movement direction of the rollers 2 and belt 3 at both ends of the belt conveyor relative to the housing 401, so that the scraper 403 is located on the side opposite to the running direction, facilitating the scraped mineral powder to enter the housing 401 through the surface of the scraper 403. After insertion into the cutter groove, it is tightened with M8×20 bolts. 3-5 shims 4032 are placed between the scraper 4033 and the T-shaped plate 4031, employing a wedge-shaped structure design. The position and tilt angle of the scraper 4033 can be adjusted by increasing or decreasing the number of shims. The scraper blade 4033 of the scraper adopts a double-edged design with an isosceles trapezoidal structure (5mm blade width, 45° inclination angle), which effectively breaks up hard coal slime lumps. It is provided with waist holes along the width direction, which can rotate the scraper blade 4033 180° after one side of the blade wears out, which can effectively extend the service life of the scraper blade 4033.

[0032] As attached Figure 1 To be continued Figure 3 As shown: The collection component 5 includes an air pump 504, which is connected to an air extraction pipe 503 via a flange. The air extraction pipe has an inner diameter of 100mm and is made of PVC. One end of the guide pipe 502 (inner diameter 80mm) is connected to the suction pipe 402, and the other end is tangentially connected to the bag filter 501 (filtration area 10㎡, filtration accuracy 5μm), so that the dust-laden airflow forms a vortex inside the filter, improving the dust settling efficiency.

[0033] As attached Figure 5 As shown: The suction pipe 402 is arranged along the length of the housing 4011, with three suction ports 6 (25mm in diameter, 200mm apart). The center line of the suction port 6 forms a 30° angle with the scraper 403 to ensure that the coal sludge is scraped off and directly enters the negative pressure zone. The air velocity inside the suction pipe is ≥18m / s to prevent dust accumulation.

[0034] Working principle:

[0035] Mark the installation position on the frame 1, ensuring that the bottom surface of the housing 4011 is 20mm from the top surface of the belt 3. Connect the housing to the frame using bolts via the connecting lugs 4012. "After inserting the T-plate 4031, adjust the number of shims 4032 so that the gap between the scraper blade 4033 and the surface of the roller 2 is ≤1mm. Start the belt conveyor and observe the scraping effect. If necessary, fine-tighten the bolt preload. When the belt 3 is running, the scraper blade 4033 scrapes the coal sludge on the surface of the roller 2 into the housing 4011, while cleaning the residual coal sludge on the bottom surface of the belt 3. After the vacuum pump 504 is started, a negative pressure is formed in the dust suction pipe 402. The coal sludge dust enters the bag filter 501 through the dust suction port 6 and the guide pipe 502, and the purified air is discharged by the vacuum pump. When replacing the scraper, loosen the T-plate bolts, pull out the scraper blade 403, and replace the scraper blade 4033 in only 5 minutes. After replacement, check the gap with a feeler gauge to ensure that the scraper blade 4033 is in uniform contact with the roller 2 / belt 3. Clean the mineral powder inside the bag filter 501 regularly."

[0036] The embodiments of this utility model are given for the purpose of illustration and description. Although the embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the utility model. Any changes, modifications, substitutions and variations made by those skilled in the art to the above embodiments within the scope of this utility model should be included within the protection scope of this utility model.

Claims

1. A detachable belt conveyor roller cleaning device for coal mines, comprising a belt conveyor frame (1) and rollers (2) installed at both ends of the frame (1) for driving and supporting the belt (3), characterized in that: Also includes: A cleaning assembly (4) is mounted on the frame (1) for cleaning the roller (2) and belt (3). It includes a cleaning box (401), on which a ash inlet (10) is provided on one side near the roller (2). Roller knife grooves (7) are provided on both sides of the ash inlet (10), and an ash inlet (9) is provided on the bottom surface. Belt knife grooves (8) are provided on both sides of the ash inlet (9). A detachable scraper (403) is disposed inside one of the roller cutter grooves (7) and one of the belt cutter grooves (8), and the two scrapers (403) are tangent to the surfaces of the roller (2) and the belt (3) respectively, and are located on the side opposite to the running direction; A vacuum suction pipe (402) is installed inside the cleaning box (401); The collection component (5) is connected to the end of the suction pipe (402) and is used to collect dust by negative pressure suction.

2. The detachable belt conveyor roller cleaning device for coal mines as described in claim 1, characterized in that: The cleaning box (401) includes a box body (4011) and connecting ears (4012). The box body (4011) is located inside the belt (3). The connecting ears (4012) are located at both ends of the box body (4011) and have mounting holes for connecting to the frame (1) by bolts.

3. The detachable belt conveyor roller cleaning device for coal mines as described in claim 2, characterized in that: The ash inlet (9) and ash outlet (10) are both located on the box body (4011). The dust suction pipe (402) is located between the ash inlet (9) and the ash outlet (10), and the dust suction pipe (402) is provided with a number of dust suction ports (6) for sucking up the dust in the cleaning box (401).

4. The detachable belt conveyor roller cleaning device for coal mines as described in claim 1, characterized in that: The scraper (403) includes a T-shaped plate (4031), a scraper blade (4033), and a pad (4032). The scraper blade (4033) is detachably mounted on the T-shaped plate (4031). The scraper blade (4033) adopts a double-edged design with an isosceles trapezoidal structure. The pad (4032) is stacked between the scraper blade (4033) and the T-shaped plate (4031). The pad (4032) adopts a wedge-shaped structure design and is used to adjust the tilt angle of the scraper blade (4033).

5. The detachable belt conveyor roller cleaning device for coal mines as described in claim 4, characterized in that: The T-shaped plates (4031) are respectively inserted into the corresponding roller cutter grooves (7) and belt cutter grooves (8) to realize the detachable installation of the scraper (403).

6. The detachable belt conveyor roller cleaning device for coal mines as described in claim 1, characterized in that: The collection component (5) includes a guide pipe (502), a bag filter (501), an air extraction pipe (503), and an air pump (504) connected in sequence. The guide pipe (502) is connected to the suction pipe (402) to form a negative pressure in the bag filter (501) to suck up and filter dust.

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