Ventilation and dust removal device and method for coal mine operation

Abstract

The invention relates to the technical field of coal mine operation ventilation and dust removal devices, in particular to a coal mine operation ventilation and dust removal device and a method thereof.The device comprises a sleeve, a movable lifting table is installed at the lower end of the sleeve, a water supply filtering mechanism is installed on the movable lifting table, and a power mechanism is installed in the sleeve; the method comprises the following steps: transferring and starting the device, directionally flowing and filtering gas, ensuring the gas inlet effect, spraying and settling dust, and filtering and discharging. According to the device, the cleaning brush part can operate, the purification net assembly can be conveniently cleaned, meanwhile, dust can be rapidly driven by air to be sucked through operation of corresponding parts, dust carried by gas entering the device is subjected to dust falling and filtering treatment in a spraying dust falling and cloth bag dust falling mode, the separation efficiency and quality can be effectively guaranteed, and the device is suitable for large-scale popularization and application. The air quality of coal mine operation is improved, and the safety of coal mine operation is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ventilation and dust removal devices for coal mine operations, and in particular to a ventilation and dust removal device for coal mine operations and a method thereof. Background Art

[0002] Coal mines are divided into underground coal mines and open-pit coal mines. Underground coal mines mine coal by digging tunnels underground. During the coal mining process, a large amount of harmful gases and dust such as gas will be generated in the tunnels. If these harmful gases and dust are not handled in time, they will seriously endanger the health and life safety of workers.

[0003] To solve the harm caused by harmful gases and dust in the tunnel to production operations, coal mine ventilation and dust removal equipment is generally installed in the tunnel, so that the blower can generate negative pressure in the equipment, so that the harmful gases and dust in the tunnel can enter the equipment for filtration, and achieve the treatment of the air in the tunnel. However, the blower in the existing coal mine dust removal equipment is fixed in position, and the treatment range of harmful gases and dust in the tunnel is limited, so the ventilation efficiency is insufficient.

[0004] The coal mine operation ventilation and dust removal device with publication number CN118148690A comprises a housing, a first drive, a fan blade, a mounting frame, and a second drive. The housing is provided with a dust removal chamber and has an air inlet and an air outlet connected to the dust removal chamber; the first drive is located in the dust removal chamber and is transmission-connected to the fan blade, the fan blade is closer to the air inlet than the air outlet, the mounting frame is connected to the first drive and is pivotally mounted in the dust removal chamber together with the fan blade; the second drive is mounted on the housing and transmission-connected to the mounting frame. The present application can adjust the angle of the fan blade relative to the air inlet in the dust removal device, effectively increasing the ventilation range, allowing more gas to enter the dust removal device for filtering, and improving the ventilation and dust removal efficiency.

[0005] In the above technical solution, after long-term use, a large amount of dust and impurities will adhere to the purification net assembly, causing the purification net assembly to be blocked, affecting the ventilation effect, and being detrimental to the safety of coal mine operations, so improvements are needed. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a ventilation and dust removal device and method for coal mine operations.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A ventilation and dust removal device for coal mine operations comprises a casing, a movable lifting platform is installed at the lower end of the casing, a water supply and filtering mechanism is installed on the movable lifting platform, a power mechanism is installed in the casing, a first inclined plate is provided on the power mechanism, the first inclined plate is installed in the casing, a collar is fixed on a side wall at one end of the casing, a purification net assembly is installed in the collar, a connecting shaft is rotatably sleeved on the purification net assembly, a shaft sleeve is fixed on the connecting shaft, a rotating shaft is rotatably sleeved on the shaft sleeve, a cleaning roller is installed on the rotating shaft, the cleaning roller and the purification net assembly are in conflict with each other, a worm gear is fixed on the rotating shaft, an end gear disk is installed at one end of the collar, the end gear disk is meshed with the worm gear, the power mechanism is connected to the connecting shaft, a high-pressure water supply pipeline is installed on the first inclined plate, and the high-pressure water supply pipeline is connected to the water supply and filtering mechanism.

[0009] Compared with the prior art, the present invention can operate the cleaning brush to facilitate the cleaning of the purification net assembly. At the same time, the air can quickly drive the dust to be sucked in through the operation of corresponding components. The dust carried by the gas entering the equipment is reduced and filtered through spraying and bag dust reduction. The separation efficiency and quality can be effectively guaranteed, the air quality of coal mine operations is improved, and the safety of coal mine operations is improved.

[0010] Preferably, the water supply and filtering mechanism includes a water tank and a filter installed on one side of the upper end of the movable lifting platform, a high-pressure pump assembly is installed on the water tank, a water pipe is installed on the high-pressure pump assembly, the water pipe is connected to the high-pressure water supply pipeline, a plurality of purification spray nozzle assemblies are installed at equal intervals on the high-pressure water supply pipeline, and the plurality of purification spray nozzle assemblies all correspond to the first inclined plate, a first baffle and a second baffle are fixed to the bottom of the sleeve, the first inclined plate is located between the first baffle and the second baffle, a second inclined plate is installed on the first baffle, an outlet pipe is penetrated at one end of the second inclined plate, and the outlet pipe is connected to the filter.

[0011] Furthermore, in order to better achieve dust removal quality, adding a water curtain dust removal method can effectively prevent dust adhesion.

[0012] Preferably, the power mechanism includes a power motor assembly installed in a sleeve, an exhaust fan blade is fixed to the end of the output shaft of the power motor assembly, the exhaust fan blade is rotatably sleeved on the first inclined plate, and the exhaust fan blade is connected to the connecting shaft.

[0013] Furthermore, the power motor assembly can realize automatic operation, stabilize the air flow and improve the dust removal efficiency.

[0014] Preferably, a wind bag is detachably mounted on a side wall at one end of the sleeve.

[0015] To further improve the dust removal effect, bag dust removal can be added.

[0016] Preferably, the high-pressure water supply pipeline is arranged in an arc shape, the first inclined plate is located at the upper end of the second inclined plate, and the first inclined plate is arranged at an angle.

[0017] Furthermore, it is easier to contact with air and improve the dust removal quality.

[0018] Preferably, a cleaning mechanism is installed on the connecting shaft, and the cleaning mechanism includes a rocker member fixedly sleeved on the front end of the connecting shaft, a sliding rod member is slidably installed on the top of the sleeve, an inclined rod member is universally installed at the rear end of the sliding rod member and the front end of the connecting shaft, and a cleaning brush member is installed at the front end of the sliding rod member.

[0019] Furthermore, through the automatic operation, the operation of the swing rod and the inclined rod can cause the inclined rod to drive the sliding rod to reciprocate, so that the cleaning brush can clean the surface of the coal mine operating equipment.

[0020] Preferably, the upper end of the first baffle is located at the upper end of the second inclined plate.

[0021] Furthermore, the first baffle can effectively perform the blocking operation.

[0022] Preferably, the first inclined plate and the second inclined plate are both made of stainless steel.

[0023] Furthermore, it is more convenient for dust to flow.

[0024] The present invention also proposes a coal mine operation ventilation and dust removal method, which is applicable to the above-mentioned coal mine operation ventilation and dust removal device, and comprises the following steps:

[0025] S1. Device transfer and start-up: The staff transfers the device to the coal mine working environment. At the same time, the device can be moved to a suitable position through a movable lifting platform, and the height of the device can be adjusted to suck out the dust in the air and avoid sucking out the dust that has been deposited on the ground, so as to improve the coal mine working environment;

[0026] S2. Directional flow and filtration of gas: The staff starts the power motor assembly to rotate the exhaust fan blades. The operation of the exhaust fan blades can make the gas flow, so as to ensure that the gas flows in a directional manner toward the air bag through the exhaust fan blades, and ensure that the gas can effectively pass through the filtering and purification components in the device, thereby improving the quality of the exhaust gas and reducing the dust content therein;

[0027] S3. Ensure air intake effect: The cleaning roller can clean the purification net assembly to prevent dust from adhering to it, ensure that the gas can effectively pass through the purification net assembly, avoid the reduction of the diameter of the air intake holes on the purification net assembly due to dust adhesion, and ensure ventilation efficiency;

[0028] S4. Spraying dust reduction: After the gas enters the casing, the high-pressure water supply pipeline and the purification spray nozzle assembly cooperate to enable the water to flow downward through the first inclined plate, forming a water curtain at the gap where the first inclined plate is not closed with the casing. The gas will flow in a directional manner through the water curtain into the rear end of the casing, and the dust in the air can be better adsorbed and removed through the water curtain;

[0029] S5. Filtered emission: The moist gas flows through the pores on the air bag, and the pores can also absorb dust in the gas to improve the quality of the exhaust gas.

[0030] Preferably, the high-pressure water supply pipeline is detachably connected to the top of the casing.

[0031] Furthermore, the high-pressure water supply pipeline is arranged in an arc shape to facilitate sufficient spraying and dust reduction.

[0032] The beneficial effects of the present invention are:

[0033] 1. The power mechanism can make the exhaust fan blades rotate, and the rotation of the exhaust fan blades can drive the fan blades and the connecting shaft to rotate, so that the worm gear and the end gear plate can be continuously engaged, and the worm gear can drive the cleaning roller to rotate. The cleaning roller can clean the purification net component to avoid blockage. At the same time, it can also extend the time of stable operation of the equipment, extend its service life, and generate suction to ensure air flow;

[0034] 2. After the air enters the casing, it can flow along the first inclined plate. Under the action of the high-pressure pump assembly, water is sprayed onto the first inclined plate through the cooperation of the water pipe and the purification spray nozzle assembly and other components, which can spray the gas entering the casing well and help to reduce dust. The water enters the second inclined plate through the first inclined plate, and then enters the filter through the outlet pipe, which is convenient for sedimentation and separation;

[0035] 3. The remaining air dust can be further filtered through the air bag;

[0036] 4. Through the action of the swing rod and the inclined rod, the sliding rod can push the cleaning brush to operate. The reciprocating operation of the cleaning brush can clean the dust on the surface of the coal mine operating equipment;

[0037] 5. The present application adopts the coordination of corresponding components, and can provide power for the rotation of the fan blades, the reciprocating operation of the cleaning roller and the cleaning brush through the action of a single power motor assembly, thereby realizing exhaust-type dust removal and achieving the purpose of using a single power source to provide power for the operation of multiple components. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a cross-sectional view of the present invention;

[0039] Figure 2 A top view of the present invention;

[0040] Figure 3 The present invention is attached Figure 1 A magnified image of point A;

[0041] Figure 4 This is a structural diagram of the first inclined plate of the present invention;

[0042] In the figure: 1 purification net assembly, 2 connecting shaft, 3 sleeve, 4 first baffle, 5 movable lifting platform, 6 exhaust fan blade, 7 first inclined plate, 8 power motor assembly, 9 second baffle, 10 water outlet pipe, 11 wind bag, 12 sleeve, 13 second inclined plate, 14 water storage tank, 15 high pressure pump assembly, 16 water pipe, 17 filter, 18 collar, 19 end gear plate, 20 worm gear, 21 rotating shaft, 22 cleaning roller, 23 high pressure water supply pipeline, 24 purification spray nozzle assembly, 25 sliding rod, 26 cleaning brush, 27 inclined rod, 28 swing rod. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0044] Reference Figure 1-4 A ventilation and dust removal device for coal mine operations includes a casing 12. A movable lifting platform 5 is installed at the lower end of the casing 12, which can drive the casing 12 to a suitable position. A water supply and filtering mechanism is installed on the movable lifting platform 5 to facilitate water curtain dust reduction. A power mechanism is installed in the casing 12 to provide stable power. A first inclined plate 7 is provided on the power mechanism to enable gas to flow to the lower end, which helps to protect the power motor component 8 and extend the service life.

[0045] Reference Figure 1 , 24. The water supply and filtering mechanism includes a water storage tank 14 and a filter 17 installed on one side of the upper end of the movable lifting platform 5. A high-pressure pump assembly 15 is installed on the water storage tank 14. The high-pressure pump assembly 15 is connected to an external supporting device for easy operation by the staff. A water delivery pipe 16 is installed on the high-pressure pump assembly 15. The water delivery pipe 16 is connected to a high-pressure water supply pipeline 23. A plurality of purification spray nozzle assemblies 24 are installed at equal intervals on the high-pressure water supply pipeline 23. The plurality of purification spray nozzle assemblies 24 correspond to the first inclined plate 7. A first baffle plate 4 and a second baffle plate 9 are fixed to the bottom of the sleeve 12. The first inclined plate 7 is located between the first baffle plate 4 and the second baffle plate 9. The first baffle plate 4 is installed with a second inclined plate 9. Plate 13, the upper end of the first baffle plate 4 is located at the upper end of the second inclined plate 13, which can effectively play a blocking role. The first inclined plate 7 and the second inclined plate 13 are both made of stainless steel, which is convenient for the flow of dust and water and easy to clean. One end of the second inclined plate 13 is penetrated by a water outlet pipe 10, and the water outlet pipe 10 is connected to the filter 17. After the gas enters the sleeve 12, it will flow downward along the first inclined plate 7. At this time, through the action of the high-pressure pump assembly 15, the water in the water tank 14 can be sprayed onto the first inclined plate 7 through the water pipe 16 and the purification spray nozzle assembly 24, which can effectively spray and reduce dust. The sewage enters the filter 17 through the second inclined plate 13 and the water outlet pipe 10 for separation.

[0046] Reference Figure 1-4 The power mechanism includes a power motor assembly 8 installed in the sleeve 12, and an exhaust fan blade 6 is fixed to the end of the output shaft of the power motor assembly 8. Through the rotation of the exhaust fan blade 6, exhaust can be effectively achieved, so that dust and air are conveniently drawn into the sleeve 12, and then separated by corresponding components in the sleeve 12. The exhaust fan blade 6 is rotatably sleeved on the first inclined plate 7, and the exhaust fan blade 6 is connected to the connecting shaft 2. The rotation of the power motor assembly 8 can cause the exhaust fan blade 6 to rotate, and the exhaust fan blade 6 drives the fan blade to rotate, so that the gas enters the sleeve 12, and at the same time can provide power for the rotation of the connecting shaft 2.

[0047] Reference Figure 1 A cleaning mechanism is installed on the connecting shaft 2, and the cleaning mechanism includes a rocker member 28 fixedly sleeved on the front end of the connecting shaft 2, a slide bar member 25 is slidably installed on the top of the sleeve 12, and an inclined rod member 27 is universally installed at the rear end of the slide bar member 25 and the front end of the connecting shaft 2. A cleaning brush member 26 is installed at the front end of the slide bar member 25. The rocker member 28 can be rotated by rotating the connecting shaft 2, and the inclined rod member 27 is operated through the universal connection component so that the slide bar member 25 drives the cleaning brush member 26 to reciprocate. Coal mine workers or corresponding working equipment can be placed at the front end of the device to clean it.

[0048] Reference Figure 1 , 34. The first inclined plate 7 is installed in the sleeve 12. A collar 18 is fixed on the side wall of one end of the sleeve 12. A purification net assembly 1 is installed in the collar 18. A connecting shaft 2 is rotatably sleeved on the purification net assembly 1. A shaft sleeve 3 is fixed on the connecting shaft 2. A rotating shaft 21 is rotatably sleeved on the shaft sleeve 3. A cleaning roller 22 is installed on the rotating shaft 21. The cleaning roller 22 and the purification net assembly 1 are in conflict. A worm gear 20 is fixed on the rotating shaft 21. An end toothed disc 19 is installed at one end of the collar 18. The end toothed disc 19 and the worm gear 2 0 is meshed, the power mechanism is connected to the connecting shaft 2, which can make the connecting shaft 2 rotate, the rotation of the connecting shaft 2 can make the sleeve 3 rotate, the rotating shaft 21 drives the worm gear 20 to continuously mesh with the end gear plate 19, which can make the rotating shaft 21 rotate, and the rotation of the rotating shaft 21 can make the cleaning roller 22 clean the purification net assembly 1 to avoid blockage. A high-pressure water supply pipeline 23 is installed on the first inclined plate 7, and the high-pressure water supply pipeline 23 is connected to the water supply and filtering mechanism, which is convenient for the generation of a water curtain and can achieve water curtain dust reduction.

[0049] Reference Figure 1 An air bag 11 is detachably mounted on the side wall at one end of the sleeve 12, which is convenient for bag dust removal and improves the quality of dust removal through triple dust removal.

[0050] Reference Figure 1 , 4 The high-pressure water supply pipeline 23 is arranged in an arc shape, and the first inclined plate 7 is located at the upper end of the second inclined plate 13. The first inclined plate 7 is inclined to facilitate the flow of air and sewage, and at the same time can suppress air and dust to prevent them from affecting the operation of the power motor assembly 8.

[0051] The present invention also proposes a coal mine operation ventilation and dust removal method, which is applicable to the above-mentioned coal mine operation ventilation and dust removal device, and comprises the following steps:

[0052] S1. Device transfer and start-up: The staff transfers the device to the coal mine working environment, and at the same time, the device can be moved to a suitable position through the movable lifting platform 5, and the height of the device can be adjusted to suck out the dust in the air, so as to avoid sucking out the dust already deposited on the ground, so as to improve the coal mine working environment;

[0053] S2, directional flow and filtration of gas: the staff starts the power motor assembly 8 to rotate the exhaust fan blade 6, and the operation of the exhaust fan blade 6 can make the gas flow, so as to ensure that the gas flows in a directional manner toward the air bag 11 through the exhaust fan blade 6, and ensure that the gas can effectively pass through the filtering and purification components in the device, improve the quality of the exhaust gas, and reduce the dust content therein;

[0054] S3, ensuring air intake effect: the cleaning roller 22 can clean the purification net assembly 1 to prevent dust and the like from adhering thereto, ensuring that the gas can effectively pass through the purification net assembly 1, preventing the diameter of the air intake holes on the purification net assembly 1 from being reduced due to dust adhesion, and ensuring ventilation efficiency;

[0055] S4, spraying dust reduction: after the gas enters the inside of the casing 12, the high-pressure water supply pipeline 23 and the purification spray nozzle assembly 24 cooperate, the water body can flow downward through the first inclined plate 7, and a water curtain can be formed at the gap where the first inclined plate 7 is not closed with the casing 12. The gas will flow in a directional manner through the water curtain into the rear end of the casing 12, and the dust in the air can be better adsorbed and removed through the water curtain; the high-pressure water supply pipeline 23 can be detachably connected to the top of the casing 12;

[0056] S5. Filtered emission: The moist gas flows through the pores on the air bag 11, and the pores can also absorb dust in the gas to improve the quality of the exhaust gas.

[0057] In the present invention, when in use, the sleeve 12 can be lifted to a suitable position by the movable lifting platform 5. At this time, the staff rotates the power motor assembly 8. The rotation of the power motor assembly 8 can rotate the exhaust fan blade 6. The exhaust fan blade 6 drives the blade to rotate, so that the gas enters the sleeve 12. When entering the purification net assembly 1, it can effectively remove larger particulate impurities in the air. At the same time, the rotating shaft 21 drives the worm gear 20 to continuously engage with the end gear plate 19, so that the rotating shaft 21 can rotate. The rotation of the rotating shaft 21 can make the cleaning roller 22 clean the purification net assembly 1 to avoid blockage. After entering the sleeve 12, the gas will flow downward along the first inclined plate 7. At this time, through the high The function of the pressure pump assembly 15 is to spray the water in the water tank 14 onto the first inclined plate 7 through the water pipe 16 and the purification spray nozzle assembly 24, which can effectively spray and reduce dust. The sewage enters the filter 17 through the second inclined plate 13 and the outlet pipe 10 for separation, and the air is then carried out through the air bag 11 for bag dust reduction, thereby improving the efficiency and quality of dust reduction. The swing arm member 28 can be rotated by rotating the connecting shaft 2, and the inclined rod member 27 can be operated through the universal connecting component, so that the sliding rod member 25 drives the cleaning brush member 26 to move back and forth. The device can be moved to the front end of the coal mine staff and the mine equipment to facilitate the cleaning of the dust on it so that it can be sucked away and the dust can be processed.

[0058] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A ventilation and dust removal device for coal mine operation, comprising a casing (12), characterized in that: A movable lifting platform (5) is installed at the lower end of the sleeve (12), and a water supply and filtering mechanism is installed on the movable lifting platform (5). A power mechanism is installed in the sleeve (12), and a first inclined plate (7) is provided on the power mechanism. The first inclined plate (7) is installed in the sleeve (12). A collar (18) is fixed on a side wall at one end of the sleeve (12), and a purification net assembly (1) is installed in the collar (18). A connecting shaft (2) is rotatably sleeved on the purification net assembly (1), and a shaft sleeve (3) is fixed on the connecting shaft (2). The shaft sleeve (3) A rotating shaft (21) is connected to the upper rotating sleeve, a cleaning roller (22) is installed on the rotating shaft (21), the cleaning roller (22) and the purification net assembly (1) are in conflict with each other, a worm gear (20) is fixed on the rotating shaft (21), an end toothed disc (19) is installed at one end of the collar (18), the end toothed disc (19) and the worm gear (20) are meshed, the power mechanism is connected to the connecting shaft (2), a high-pressure water supply pipeline (23) is installed on the first inclined plate (7), the high-pressure water supply pipeline (23) and the water supply filtering mechanism are connected, and a cleaning mechanism is installed on the connecting shaft (2).

2. A ventilation and dust removal device for coal mine operations according to claim 1, characterized in that: The water supply and filtering mechanism comprises a water storage tank (14) and a filter (17) installed on one side of the upper end of the movable lifting platform (5); a high-pressure pump assembly (15) is installed on the water storage tank (14); a water delivery pipe (16) is installed on the high-pressure pump assembly (15); the water delivery pipe (16) is connected to a high-pressure water supply pipeline (23); a plurality of purification spray nozzle assemblies (24) are installed at equal intervals on the high-pressure water supply pipeline (23); the plurality of purification spray nozzle assemblies (24) are all corresponding to the first inclined plate (7); a first baffle plate (4) and a second baffle plate (9) are fixed to the bottom of the sleeve (12); the first inclined plate (7) is located between the first baffle plate (4) and the second baffle plate (9); a second inclined plate (13) is installed on the first baffle plate (4); a water outlet pipe (10) is passed through one end of the second inclined plate (13); the water outlet pipe (10) is connected to the filter (17).

3. A ventilation and dust removal device for coal mine operation according to claim 1, characterized in that: The power mechanism comprises a power motor assembly (8) installed in a sleeve (12), an exhaust fan blade (6) is fixed to the end of the output shaft of the power motor assembly (8), the exhaust fan blade (6) is rotatably sleeved on the first inclined plate (7), and the exhaust fan blade (6) is connected to the connecting shaft (2).

4. A ventilation and dust removal device for coal mine operation according to claim 1, characterized in that: An air bag (11) is detachably mounted on one end of the sleeve (12).

5. A coal mine ventilation and dust removal device according to claim 2, characterized in that: The high-pressure water supply pipeline (23) is arranged in an arc shape, the first inclined plate (7) is located at the upper end of the second inclined plate (13), and the first inclined plate (7) is arranged at an angle.

6. A ventilation and dust removal device for coal mine operation according to claim 1, characterized in that: The cleaning mechanism comprises a rocker member (28) fixedly sleeved on the front end of the connecting shaft (2); a slide member (25) is slidably mounted on the top of the sleeve (12); a diagonal member (27) is universally mounted on the rear end of the slide member (25) and the front end of the connecting shaft (2); and a cleaning brush member (26) is mounted on the front end of the slide member (25).

7. A coal mine ventilation and dust removal device according to claim 2, characterized in that: The upper end of the first baffle (4) is located at the upper end of the second inclined plate (13).

8. A coal mine ventilation and dust removal device according to claim 2, characterized in that: The first inclined plate (7) and the second inclined plate (13) are both made of stainless steel.

9. A method for ventilation and dust removal in coal mine operation, applicable to a ventilation and dust removal device in coal mine operation according to claims 1 to 8, characterized in that: The following steps are involved: S1. Transfer and start-up of the device: The staff transfers the device to the coal mine working environment. At the same time, the device can be moved to a suitable position through the movable lifting platform (5), and the height of the device can be adjusted to suck out dust in the air and avoid sucking out dust that has already deposited on the ground, so as to improve the coal mine working environment; S2. Directional flow and filtration of gas: the staff starts the power motor assembly (8) to rotate the exhaust fan blades (6). The operation of the exhaust fan blades (6) can make the gas flow, so as to ensure that the gas flows in a directional manner toward the air bag (11) through the exhaust fan blades (6), and ensure that the gas can effectively pass through the filtering and purification components in the device, thereby improving the quality of the exhaust gas and reducing the dust content therein; S3, ensuring air intake effect: the cleaning roller (22) can clean the purification net assembly (1) to prevent dust and the like from adhering to it, thereby ensuring that the gas can effectively pass through the purification net assembly (1) and preventing the diameter of the air intake holes on the purification net assembly (1) from being reduced due to dust adhesion, thereby ensuring air exchange efficiency; S4, spraying dust reduction: after the gas enters the interior of the sleeve (12), the high-pressure water supply pipeline (23) and the purification spray nozzle assembly (24) cooperate to allow water to flow downward through the first inclined plate (7), forming a water curtain at the gap between the first inclined plate (7) and the sleeve (12), and the gas will flow in a directional manner through the water curtain into the rear end of the sleeve (12), and the dust in the air can be better adsorbed and removed through the water curtain; S5. Filtration and emission: The moist gas flows through the pores on the air bag (11), and the pores can also absorb dust in the gas, thereby improving the quality of the emission gas.

10. A method for ventilation and dust removal in coal mine operations according to claim 9, characterized in that: The high-pressure water supply pipeline (23) is detachably connected to the top of the sleeve (12).

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