Continuous dust removal device for gas extraction and gathering in coal mine

Abstract

This invention belongs to the field of coal mine gas extraction and dust removal technology, and discloses a continuous dust removal device for coal mine gas extraction and transportation. The device includes a housing with multiple sets of air inlet slots evenly spaced on its outer circumference. An air inlet pipe is fixedly connected to the top of each air inlet slot, and the air inlet pipe is used to connect to high-pressure air. A roller is rotatably installed in the middle of the housing. The device forms a seal by abutting against the inner wall of the filter cylinder with a sealing strip. Thus, the inner cavity of the filter cylinder is divided by the isolation plate and sealing strip into a filtration zone facing the air inlet slots (where the gas filtered by the filter cylinder can directly enter the sealing cover and be discharged) and a cleaning zone facing the roller (where the cleaning zone uses a high-pressure airflow connected to the isolation plate and connecting pipe to backflush the inner wall of the filter cylinder, blowing impurities into the space formed between the four sets of filter cylinders and the four sets of sealing cylinders). The coal dust impurities backflushed by the high-pressure airflow in the cleaning zone are discharged along the discharge chute, achieving simultaneous filtration and cleaning.

Description

Technical Field

[0001] This invention belongs to the field of coal mine gas extraction and purification technology, specifically a continuous dust removal device for coal mine gas extraction and transportation. Background Technology

[0002] Coal mine gas is a gas that can cause coal mine disasters and is also a combustible resource. During coal mining, when coal mine gas is extracted through pipelines, the large negative pressure results in a large amount of impurities such as coal dust and water vapor in the extracted gas. Therefore, dust removal before coal mine gas extraction and transportation is essential. Current technologies for gas extraction require filtration (removing solid particulate impurities such as dust), dehydration (removing moisture), and the use of activated carbon to adsorb harmful gases (SO2, H2S) and odors. During the filtration stage, the filtered coal dust and other particulate impurities adhere to the outer working surface of the filter screen (the side of the filter screen facing the material to be filtered). Over time, this can cause filter screen blockage and reduce the efficiency of the extraction process. Filtration efficiency is a concern. Furthermore, due to the continuous output of extracted gas, stopping the machine to replace the filter screen would significantly impact the dust handling capacity during gas extraction. To achieve continuous dust removal during coal mine gas extraction and avoid filtration work interruptions caused by filter screen replacement, existing technologies employ structures for synchronous filter screen cleaning: scraping or backflushing. However, scraping easily damages the filter screen and has poor cleaning effect; the scraped-off impurities require additional pushing to expel coal dust. Backflushing, on the other hand, affects the air path throughout the filtration process. Since the air path during backflushing is completely opposite to the filtration air path, gas intake also needs to be paused. This undoubtedly violates the principle of continuity in coal mine gas extraction filtration, and therefore urgently needs to be addressed. Summary of the Invention

[0003] The purpose of this invention is to provide a continuous dust removal device for coal mine gas extraction and transportation, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a continuous dust removal device for coal mine gas extraction and transportation, comprising a housing, a motor installed on the top of the housing, a roller connected to the output shaft of the motor, filter cylinders rotatably installed on the front, back, left, and right sides of the inner cavity of the housing, a second gear fixedly installed on the top of the outer surface of the filter cylinder, a first gear fixedly installed on the top of the roller, and four sets of circumferentially equidistantly distributed rotating shafts and sealing cylinders rotatably installed in the inner cavity of the housing;

[0005] Each set of sealing cylinders abuts against the outer surface of the two adjacent sets of filter cylinders. A discharge trough is provided at the bottom of the box. A fixed column is fixedly connected to the top of the box. A transfer cylinder is fixedly connected to the top of the fixed column. A fan is fixedly connected to the top of the transfer cylinder. Four sets of connecting pipes and a sealing cover are fixedly connected to the outer surface of the transfer cylinder. A connecting pipe is fixedly connected to the top of the sealing cover. An isolation plate is fixedly connected to the bottom of the connecting pipe. Placement slots are provided on both sides of the isolation plate. A sealing strip is rotatably installed inside the placement slot.

[0006] In a preferred embodiment of the present invention, the sealing cylinder is fixedly sleeved on the outer surface of the rotating shaft. The sealing cylinder is made of rubber block and abuts against the outer surface of the filter cylinder to produce deformation. Gear one and gear two mesh with each other. The top end of the filter cylinder is sealed and sleeved on the bottom of the sealing cover. The sealing strip abuts against the inner wall of the filter cylinder. Multiple sets of air inlet slots are equidistantly installed on the outer circumferential surface of the housing. An air inlet pipe is fixedly connected to the top of the air inlet slot.

[0007] As a preferred embodiment of the present invention, the top of the isolation plate is provided with a downward through hole, and the portion of the isolation plate located inside the filter cylinder divides the inner cavity of the filter cylinder into a mutually sealed and isolated filtration zone and a cleaning zone. The volume of the filtration zone is larger than the volume of the cleaning zone, and the through hole communicates with the cleaning zone.

[0008] In a preferred embodiment of the present invention, the upper part of the isolation plate is rotatably adapted to the upper side of the inner wall of the filter cylinder, and the upper and lower sides of the lower part of the isolation plate are respectively sealed and abutted against the upper and lower sides of the inner wall of the filter cylinder.

[0009] As a preferred embodiment of the present invention, four sets of circumferentially distributed dust baffles are fixedly connected to the top of the inner wall of the box, and each pair of adjacent filter cylinders are symmetrical with respect to one set of dust baffles.

[0010] As a preferred embodiment of the present invention, the top view cross-sectional shape of the placement groove is "U" shaped, and the sealing strip is made of rubber block and abuts against the inner wall of the filter cylinder.

[0011] As a preferred embodiment of the present invention, the top view cross-sectional shape of the isolation plate is "human" shaped, and the included angle between the two sides of the isolation plate is 145°.

[0012] As a preferred embodiment of the present invention, when the motor drives the drum, gear one, filter cylinder and gear two to rotate, the sealing cylinder and the rotating shaft rotate synchronously through the frictional force with the outer surface of the filter cylinder.

[0013] The beneficial effects of this invention are as follows:

[0014] 1. This device has been redesigned to achieve simultaneous cleaning during filtration, enabling uninterrupted filtration operations. First, four sets of filter cartridges are rotatably installed inside the housing, with their outer surfaces serving as the filtration working surfaces. Four sets of sealing cylinders made of rubber blocks are placed between the four sets of filter cartridges. When the sealing cylinders come into contact with the filter cartridges, they deform and form a seal. A partition plate located on the inner wall of the filter cartridges is used to rotatably install a sealing strip on the side with its bottom facing the inner wall of the filter cartridge. The sealing strip comes into contact with the inner wall of the filter cartridge and forms a seal. Thus, the inner cavity of the filter cartridge is divided by the partition plate and sealing strip into a filtration zone facing the air inlet (where filtered gas can directly enter the sealing cover and be discharged) and a cleaning zone facing the drum (where high-pressure airflow from the partition plate and connecting pipe back-blown against the inner wall of the filter cartridges, blowing impurities into the space between the four sets of filter cartridges and the four sets of sealing cylinders). The dust and impurities back-blown by the high-pressure airflow in the cleaning zone are discharged along the discharge chute, achieving simultaneous filtration and cleaning.

[0015] 2. Then, through the roller located in the middle of the housing, driven by the motor and transmitted through gear one and gear two, the filter cartridge can rotate under the drive of the motor. At this time, the positions of the filtration zone and cleaning zone inside the filter cartridge remain unchanged, and are separated by the isolation plate and sealing strip through rolling sealing. The side of the outer surface of the filter cartridge facing the air inlet groove moves to a position of 180° under rotation and faces the front of the roller. At this time, the high-pressure airflow in the cleaning zone can be horizontally directed towards the axis of the roller and clean the outer surface of the filter cartridge. At this time, the side of the filter cartridge facing the air inlet groove can always maintain a brand new and optimal filtration state, thereby greatly improving the filtration efficiency of the device.

[0016] 3. The sealing cylinder and sealing strip designed in this device can provide a long-lasting and effective rolling seal. By setting the sealing strip in the placement groove, it rolls against the inner wall of the filter cylinder, and the sealing strip rotates in a compressed state. Therefore, the contact area between the sealing strip and the inner wall of the filter cylinder is increased. At the same time, the "U"-shaped design of the placement groove allows the sealing strip to automatically enter into the filter hole of the filter cylinder when it is facing the filter cylinder, forming an effective seal. The sealing cylinder provides a rotational seal on the outside of the filter cylinder through rotation and compression deformation. The advantage of rotational sealing is that the contact and force-bearing parts are not in one place, but form a periodic seal through rotation, avoiding a single force point, greatly reducing the aging of the sealing strip and sealing cylinder, and extending the service life of the device. Attached Figure Description

[0017] Figure 1 This is a frontal perspective view of the overall structure of the present invention;

[0018] Figure 2 This is a front sectional view of the overall structure of the present invention;

[0019] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A;

[0020] Figure 4 This is a schematic diagram of the axial section of the housing of the present invention;

[0021] Figure 5 This is a top sectional view of the housing of the present invention;

[0022] Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point B;

[0023] Figure 7 This is a schematic diagram showing the separation of the drum, gear one, filter cylinder, gear two, fixed column and transfer cylinder of the present invention;

[0024] Figure 8 This is a schematic diagram showing the separation of the filter cartridge, gear 2, connecting pipe 2, isolation plate, and sealing strip of the present invention.

[0025] In the diagram: 1. Housing; 2. Air inlet slot; 3. Air inlet pipe; 4. Motor; 5. Drum; 6. Gear 1; 7. Filter cartridge; 8. Gear 2; 9. Fixed column; 10. Transfer cylinder; 11. Fan; 12. Connecting pipe 1; 13. Sealing cover; 14. Connecting pipe 2; 15. Isolation plate; 16. Through hole; 17. Placement slot; 18. Sealing strip; 19. Rotating shaft; 20. Sealing cylinder; 21. Discharge chute; 22. Dust baffle plate. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] like Figures 1 to 8As shown, this embodiment of the invention provides a continuous dust removal device for coal mine gas extraction and transportation, including a housing 1. Multiple sets of air inlet slots 2 are equidistantly installed on the outer circumference of the housing 1. An air inlet pipe 3 is fixedly connected to the top of each air inlet slot 2, and the air inlet pipe 3 is used to connect to high-pressure air. A roller 5 is rotatably installed in the middle of the housing 1. A motor 4 is installed at the bottom of the housing 1, and the motor 4 is connected to the roller 5 via a transmission. Filter cylinders 7 are rotatably installed on the front, back, left, and right sides of the inner cavity of the housing 1. A gear 8 is fixedly installed on the top of the outer surface of the filter cylinder 7. A gear 6 is fixedly installed on the top of the roller 5, and the gear 6 meshes with the gear 8. Four sets of circumferentially equidistant rotating shafts 19 and sealing cylinders 20 are rotatably installed in the inner cavity of the housing 1. Each set of sealing cylinders 20... The sealing cylinder 20 abuts against the outer surface of the two adjacent filter cylinders 7. The bottom of the box 1 is provided with a discharge trough 21. The top of the box 1 is fixedly connected with a fixing column 9. The top of the fixing column 9 is fixedly connected with a transfer cylinder 10. The top of the transfer cylinder 10 is fixedly connected with a fan 11. The outer surface of the transfer cylinder 10 is fixedly connected with four sets of connecting pipes 12 and a sealing cover 13. The top of the filter cylinder 7 is sealed and fitted at the bottom of the sealing cover 13. The top of the sealing cover 13 is fixedly connected with a connecting pipe 14. The bottom of the connecting pipe 14 is fixedly connected with an isolation plate 15. The isolation plate 15 has placement grooves 17 on both sides. A sealing strip 18 is rotatably installed inside the placement groove 17. The sealing strip 18 abuts against the inner wall of the filter cylinder 7.

[0028] This device has been redesigned to achieve simultaneous cleaning during filtration, enabling uninterrupted filtration operations. First, four sets of filter cylinders 7 are rotatably installed inside the housing 1, with their outer surfaces serving as the filtration working surfaces. Four sets of sealing cylinders 20, made of rubber blocks, are placed between the four sets of filter cylinders 7. When the sealing cylinders 20 come into contact with the filter cylinders 7, they deform and form a seal. A partition plate 15 is installed on the inner wall of the filter cylinder 7, with its bottom facing the inner wall of the filter cylinder 7, and a sealing strip 18 is rotatably installed. The sealing strip 18 connects to the inner wall of the filter cylinder 7. The filter cartridge 7 is thus divided by the partition plate 15 and the sealing strip 18 into a filtration zone facing the air inlet slot 2 (where the gas filtered by the filter cartridge 7 can directly enter the sealing cover 13 and be discharged) and a cleaning zone facing the drum 5 (where the cleaning zone is connected to the partition plate 15 and the connecting pipe 14 to the high-pressure airflow to back-blow the inner wall of the filter cartridge 7, blowing impurities into the space formed between the four sets of filter cartridges 7 and the four sets of sealing cartridges 20). The dust and impurities back-blown by the high-pressure airflow in the cleaning zone are discharged along the discharge chute 21, realizing the simultaneous operation of filtration and cleaning.

[0029] Then, the filter cartridge 7, driven by the motor 4 and driven by the roller 5 located in the middle of the housing 1, rotates through the gear 6 and gear 8. At this time, the positions of the filtration zone and cleaning zone inside the filter cartridge 7 remain unchanged, and are separated by the isolation plate 15 and the sealing strip 18 through rolling sealing. The side of the outer surface of the filter cartridge 7 facing the air inlet slot 2 moves to a position of 180° under rotation and faces the roller 5. At this time, the high-pressure airflow in the cleaning zone can be horizontally directed towards the axis of the roller 5 and clean the outer surface of the filter cartridge 7. At this time, the side of the filter cartridge 7 facing the air inlet slot 2 can always maintain a brand new and optimal filtration state, thereby greatly improving the filtration efficiency of the device.

[0030] The sealing cylinder 20 and sealing strip 18 designed in this device can provide a long-lasting and effective rolling seal. By setting the sealing strip 18 in the placement groove 17, it rolls against the inner wall of the filter cylinder 7, and the sealing strip 18 rotates in a compressed state. Therefore, the area of ​​contact between the sealing strip 18 and the inner wall of the filter cylinder 7 increases. At the same time, the "U"-shaped design of the placement groove 17 allows the sealing strip 18 to automatically enter the filter hole of the filter cylinder 7 when it is facing the filter hole, forming an effective seal. The sealing cylinder 20 provides a rotational seal on the outside of the filter cylinder 7 through rotation and compression deformation. The advantage of rotational sealing is that the contact and force-bearing parts are not in one place, but are formed by rotation, which greatly reduces the aging of the sealing strip 18 and sealing cylinder 20 and extends the service life of the device.

[0031] The sealing cylinder 20 is fixedly sleeved on the outer surface of the rotating shaft 19. The sealing cylinder 20 is made of rubber block and deforms by contacting the outer surface of the filter cylinder 7.

[0032] The sealing cylinder 20 is responsible for isolating the air inlet slot 2 and the discharge slot 21. The discharge slot 21 should be unidirectionally connected to the cleaning area inside the filter cylinder 7. This design allows the dust and impurities discharged through the cleaning area to be discharged downwards along the discharge slot 21, thus achieving the discharge function. The deformation of the sealing cylinder 20 will inevitably increase the contact area with the outer surface of the filter cylinder 7, thereby forming an effective seal between the filter cylinder 7 and the sealing cylinder 20.

[0033] The top of the isolation plate 15 has a through hole 16 that extends downwards. The part of the isolation plate 15 inside the filter cylinder 7 divides the inner cavity of the filter cylinder 7 into a filtration zone and a cleaning zone that are sealed and isolated from each other. The volume of the filtration zone is larger than the volume of the cleaning zone. The through hole 16 is connected to the cleaning zone.

[0034] The isolation plate 15 and the sealing strip 18 cooperate to form a fixed filtration zone and a cleaning zone in the inner cavity of the rotating filter cylinder 7. The filtration zone directly receives the filtered gas and guides it upward into the sealing cover 13, while the cleaning zone is connected to the connecting pipe 14 through the isolation plate 15 and is completely sealed and isolated from the filtration zone. This is achieved by the sealing strip 18 rolling against the inner wall of the filter cylinder 7.

[0035] The upper part of the isolation plate 15 is rotatably adapted to the upper side of the inner wall of the filter cylinder 7, and the upper and lower sides of the lower part of the isolation plate 15 are respectively sealed and abutted against the upper and lower sides of the inner wall of the filter cylinder 7.

[0036] The upper part of the isolation plate 15 located on the inner wall of the filter cylinder 7 has a through hole 16. The through hole 16 is used to connect the cleaning area in the inner cavity of the filter cylinder 7 and the connecting pipe 14. The lower part of the isolation plate 15 is completely located in the inner cavity of the filter cylinder 7, and its upper and lower sides abut against the inner wall of the filter cylinder 7 to form a seal.

[0037] Among them, four sets of circumferentially distributed dust baffles 22 are fixedly connected to the top of the inner wall of the box 1, and each pair of adjacent filter cartridges 7 are symmetrical with respect to a set of dust baffles 22.

[0038] like Figure 5 As shown, if the outer surfaces of two adjacent filter cartridges 7 facing the dust baffle 22 are directly opposite each other, the dust and gas generated there will cancel each other out, and may even enter the opposite side, thus affecting the cleaning efficiency of the filter cartridges 7.

[0039] The top view of the placement groove 17 is U-shaped, and the sealing strip 18 is made of rubber block and abuts against the inner wall of the filter cylinder 7.

[0040] The U-shaped placement groove 17 has a sealing strip 18 inside that, when aligned with the filter hole of the filter cylinder 7, will promptly seal the filter hole to form an effective seal.

[0041] The top view cross-section of the isolation plate 15 is shaped like a "human", and the included angle between the two sides of the isolation plate 15 is 145°.

[0042] The "human" shaped isolation plates 15, in conjunction with the sealing strip 18, divide the inner cavity of the filter cylinder 7 into mutually isolated filtration and cleaning zones.

[0043] When the motor 4 drives the drum 5, gear 6, filter cylinder 7 and gear 8 to rotate, the sealing cylinder 20 and the rotating shaft 19 rotate synchronously through the frictional force with the outer surface of the filter cylinder 7.

[0044] The sealing cylinder 20 and the sealing strip 18 form a low-wear seal under rolling friction through synchronous rotation and contact with the filter cylinder 7, which can effectively extend the service life of the device.

[0045] Working principle:

[0046] First, this device can filter dust and other impurities from the inhaled coal mine gas. It starts the fan 11 and draws air outwards, creating negative pressure inside the device. The gas, connected to the coal mine gas inlet end via the inlet pipe 3, enters the inner cavity of the housing 1 under the negative pressure along the inlet pipe 3 and the inlet slot 2. Figure 5 As shown, the gas from the air inlet slot 2 moves along the radial line of the housing 1 towards the axis of the housing 1 and passes through the outer side of the filter cylinder 7, thereby filtering out dust and other impurities in the gas. The filtered gas enters the filtration area in the filter cylinder 7 and moves upward to the sealing cover 13, the connecting pipe 12 and the transfer cylinder 10, and finally is discharged to the next process with the exhaust end of the fan 11.

[0047] Then, the outer surface of the filter cylinder 7, after being filtered, has impurities such as coal dust attached to its surface. At this time, the cleaning mode is started: the motor 4 is started, and the roller 5, gear 6, gear 8 and filter cylinder 7 are driven to rotate simultaneously. In the inner cavity of the housing 1, the sealing cylinder 20 and the rotating shaft 19 are driven to rotate synchronously by the rotation of the filter cylinder 7, and always maintain the seal at the contact point with the filter cylinder 7 (Note: the sealing cylinder 20 will deform when it contacts the filter cylinder 7, and its deformation area can cover a large part of the outer surface of the filter cylinder 7). The side of the outer surface of the filter cylinder 7 with impurities attached rotates to the side facing the outer surface of the roller 5. At the same time, in the inner cavity of the filter cylinder 7, the sealing strip 18 abuts against the inner wall of the filter cylinder 7, which also forms a seal. At this time, the connecting pipe 14 is connected to high pressure gas, and enters the cleaning area through the connecting pipe 14 and the isolation plate 15. At this time, the impurities attached to the outer surface of the filter cylinder 7 are blown by the high pressure airflow to the surface of the roller 5 and the dust baffle 22, and finally discharged downward along the discharge chute 21.

[0048] Finally, the rotation speed of motor 4 is controlled to slow down the rotation speed of filter cartridge 7. In this way, filter cartridge 7 rotates and cleans at the same time, ensuring the sustainability of gas filtration.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0050] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A continuous dust removal device for gas gathering and transportation in a coal mine, comprising a box (1), characterized in that: The top of the box (1) is provided with a motor (4), the output shaft of the motor (4) is connected with a roller (5), the front and rear and left and right sides of the inner cavity of the box (1) are rotatably provided with filter cylinders (7), the top of the outer surface of the filter cylinder (7) is fixedly provided with gear two (8), the top of the roller (5) is fixedly provided with gear one (6), the inner cavity of the box (1) is rotatably provided with four groups of circumferentially equidistantly distributed rotating shafts (19) and sealing cylinders (20); Each group of the sealing cylinder (20) is in abutment with the outer surfaces of the adjacent two groups of filter cylinders (7), the bottom of the box (1) is provided with a discharge chute (21), the top of the box (1) is fixedly connected with a fixed column (9), the top of the fixed column (9) is fixedly connected with a transfer cylinder (10), the top of the transfer cylinder (10) is fixedly connected with a fan (11), the outer surface of the transfer cylinder (10) is fixedly connected with four groups of communication pipes one (12) and sealing covers (13), the top of the sealing cover (13) is fixedly connected with a communication pipe two (14), the bottom of the communication pipe two (14) is fixedly connected with a partition plate (15), the both sides of the partition plate (15) are provided with placing grooves (17), and the inner part of the placing groove (17) is rotatably provided with a sealing strip (18). The sealing cylinder (20) is fixedly sleeved on the outer surface of the rotating shaft (19), the sealing cylinder (20) is made of rubber blocks and is in abutment with the outer surface of the filter cylinder (7) to be deformed, the gear one (6) is engaged with the gear two (8), the top of the filter cylinder (7) is sealingly sleeved at the bottom of the sealing cover (13), the sealing strip (18) is in abutment with the inner wall of the filter cylinder (7), the outer circumferential surface of the box (1) is equidistantly provided with a plurality of air inlet grooves (2), the top of the air inlet groove (2) is fixedly connected with an air inlet pipe (3), the top of the partition plate (15) is provided with a through hole (16) penetrating downward, the part of the partition plate (15) located in the inner part of the filter cylinder (7) divides the inner cavity of the filter cylinder (7) into a filtering area and a cleaning area which are mutually sealed and isolated, the volume of the filtering area is greater than that of the cleaning area, the through hole (16) is in communication with the cleaning area, the upper part of the partition plate (15) is rotatably matched with the upper side of the inner wall of the filter cylinder (7), and the upper and lower sides of the lower part of the partition plate (15) are sealingly in abutment with the upper and lower sides of the inner wall of the filter cylinder (7) respectively.

2. The continuous dust removal device for coal mine gas extraction and gathering according to claim 1, characterized in that: The top of the inner wall of the box (1) is fixedly connected with four groups of circumferentially equidistantly distributed dustproof plates (22), and each adjacent two groups of the filter cylinders (7) are mutually symmetrical based on a group of dustproof plates (22).

3. The continuous dust removal device for coal mine gas extraction and gathering according to claim 2, characterized in that: The top view of the placing groove (17) is in the shape of "U", and the sealing strip (18) is made of rubber blocks and is in abutment with the inner wall of the filter cylinder (7).

4. The continuous dust removal device for coal mine gas extraction and gathering according to claim 3, characterized in that: The top view of the partition plate (15) is in the shape of "human", and the included angle between the both sides of the partition plate (15) is 145°.

5. The continuous dust removal device for coal mine gas extraction and gathering according to claim 4, characterized in that: The motor (4) drives the rotation of the roller (5), gear one (6), filter cylinder (7) and gear two (8), the sealing cylinder (20) and the rotating shaft (19) rotate synchronously through the friction force acting on the outer surface of the filter cylinder (7).

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