CN113186009B - A kind of coal mine underground gas purification device and purification method thereof - Google Patents

Abstract

The invention discloses a coal mine underground gas purification device and a purification method thereof, and relates to the technical field of gas purification, in particular to a coal mine underground gas purification device and a purification method, comprising a gas purification box and a cleaning brush. A driving cylinder is installed inside, and a telescopic rod is connected to the right side of the driving cylinder, a linkage plate is connected to the right side of the telescopic rod, and a fixed pile is installed on the right side of the linkage plate, and the cleaning brush is installed on the telescopic rod away from the fixed position At the position of the horizontal center line of the pile, a water-absorbing cotton plate is arranged above the elastic plate, and heating rods are installed on the left and right sides above the water-absorbing cotton plate. The coal mine underground gas purification device and its purification method are provided with a driving cylinder, which can drive a linkage plate to move to the right through a telescopic rod. During the process of the linkage plate moving to the right, it can drive a fixed pile and a cleaning brush to move with it, and the moving cleaning brush can be respectively Clean the separation screen and gas purification box.

Description

A kind of coal mine underground gas purification device and purification method

technical field

The invention relates to the technical field of gas purification, in particular to a coal mine underground gas purification device and a purification method thereof.

Background technique

Gas is formed by the decomposition of cellulose and organic matter by the action of anaerobic bacteria in the early stage of coal accumulation by ancient plants. In a high temperature and high pressure environment, gas continues to be generated due to physical and chemical effects while coal is being formed. Gas is a colorless, odorless gas, insoluble in water, does not support combustion and cannot maintain breathing. When it reaches a certain concentration, it can cause people to suffocate due to lack of oxygen, and can burn or explode. Gas exists in a free state and a sorption state in the coal body or surrounding rock. In the coal mining operation, it is necessary to purify the underground gas to ensure the smooth progress of the coal mining. Therefore, a coal mine underground gas purification device and its purification are required. method.

The existing coal mine underground gas purification device and its purification method are cumbersome and time-consuming, which affects the progress of coal mining, and the existing gas purification device lacks its own cleaning function, which easily affects the subsequent purification function of the device.

SUMMARY OF THE INVENTION

In view of the deficiencies of the prior art, the present invention provides a coal mine underground gas purification device and a purification method thereof, which solves the problem that the existing coal mine underground gas purification device and its purification method proposed in the above-mentioned background technology are cumbersome and time-consuming. , affecting the progress of coal mining, and the existing gas purification device lacks its own cleaning function, which easily affects the subsequent purification function of the device.

In order to achieve the above purpose, the present invention is achieved through the following technical solutions: an underground gas purification device in a coal mine and a purification method thereof, comprising a gas purification box and a cleaning brush, and a first suction pump is installed on the left side of the gas purification box, In addition, an intake pipe is installed at the connection between the first air suction pump and the gas purification box, a driving cylinder is installed inside the gas purification box, and a telescopic rod is connected to the right side of the driving cylinder, and the right side of the telescopic rod is connected There is a linkage plate, and a fixed pile is installed on the right side of the linkage plate, the front and rear sides of the linkage plate are provided with limit slots, the upper and lower sides of the fixed pile are installed with electric push rods, and the electric push rods are installed. A telescopic column is connected at a position away from the horizontal centerline of the fixed pile, and the cleaning brush is installed at a position away from the horizontal centerline of the fixed pile. The right side of the fixed pile is provided with a cleaning channel, and the right side of the cleaning channel is A guide chute is provided, a sealing plate is installed on the right side of the guide chute, and a ball screw is installed on the front and rear sides of the sealing plate, a transmission nut is installed on the outside of the ball screw, and the ball screw is installed A servo motor is installed above the cleaning channel, a separation screen plate is installed above the cleaning channel, and a limit plate is fixed on the left and right sides above the separation screen plate, and a return spring is connected above the limit plate, and returns An elastic plate is connected above the position spring, a water-absorbing cotton plate is arranged above the elastic plate, and heating rods are installed on the left and right sides above the water-absorbing cotton plate, and a first activated carbon plate is installed above the heating rod, and A second activated carbon plate is installed above the first activated carbon plate, a second suction pump is installed above the gas purification box, and a gas transmission pipeline is installed at the connection between the second suction pump and the gas purification box, and the gas transmission pipe is installed. A gas collecting box is connected to the right side of the gas pipe, and an outlet pipe is installed on the right side of the gas collecting box, and an outer box door is installed at the front end of the gas purification box.

Optionally, the first air suction pump and the intake pipe are connected by a thread, and a communication structure is formed between the intake pipe and the gas purification tank.

Optionally, the size of the cross-section of the separation screen is consistent with that of the gas purification box, the structure of the separation screen is a hollow mesh structure, and the size of the cross-section of the absorbent cotton board is consistent with that of the gas purification box, and the absorbent cotton The plate and the separation screen plate are parallel to each other.

Optionally, the first activated carbon plate and the second activated carbon plate are parallel to each other, and a communication structure is formed between the gas purification box and the gas collecting box through the gas transmission pipeline, and a communication structure is formed between the gas collecting box and the gas outlet pipeline. .

Optionally, a tensile structure is formed between the electric push rod and the telescopic column, the telescopic column and the cleaning brush are fixedly connected, and the structure of the fixed pile is an internal hollow structure.

Optionally, the drive cylinder forms a telescopic structure between the telescopic rod and the linkage plate, and the fixed pile and the fixed pile are parallel to each other, and the cleaning brushes are symmetrically distributed about the horizontal center line of the fixed pile, and the cleaning brushes are separated from each other. The screen plates are perpendicular to each other, and the linkage plate forms a sliding structure between the limit card slot and the gas purification box.

Optionally, the cleaning channel and the sealing plate are parallel to each other, and the ball screws are symmetrically distributed with respect to the vertical center line of the sealing plate, and a rotating structure is formed between the servo motor and the ball screw, and the ball screw is at the same time. through the inside of the transfer nut.

Optionally, the limit plate forms an elastic structure between the return spring and the elastic plate, and the return spring is symmetrically distributed with respect to the vertical centerline of the absorbent cotton plate.

Optionally, the heating rod and the absorbent cotton board are perpendicular to each other, and the heating rods are symmetrically distributed with respect to the vertical centerline of the absorbent cotton board.

Optionally, the purification method of the coal mine underground gas purification device includes the following steps:

S1: After passing the gas into the gas purification box, the gas will naturally move upward due to its own properties. When passing through the separation screen, the separation screen will separate it from solid and gas;

S2: When the gas gas after solid-gas separation continues to move upward, it passes through the water-absorbing cotton board, and the water-absorbing cotton board absorbs its internal water vapor, and then it can be dehydrated;

S3: After the dehydration, the gas continues to move upward through the first activated carbon plate and the second activated carbon plate in turn, and the first activated carbon plate and the second activated carbon plate respectively dry and purify it.

The invention provides a coal mine underground gas purification device and a purification method thereof, which have the following beneficial effects:

1. The coal mine underground gas purification device and its purification method are provided with a first suction pump, which can introduce the gas into the gas purification box through the air intake pipe, and the gas purification box can be cleaned by the separation mesh plate of the hollow mesh structure. The gas is separated to isolate the particles in the gas, so as to achieve the effect of impurity removal. The water-absorbing cotton board can adsorb the water vapor in the gas gas, so as to make the gas gas more pure. The first activated carbon board can absorb moisture The gas is dried, thereby improving the drying degree of the gas. The second activated carbon plate can adsorb the impurities in the gas gas, so as to achieve the purpose of purification. The gas can be purified in the gas purification box through the gas pipeline. The gas is sucked into the gas collecting box, which is stored in the gas collecting box, and the gas is easily discharged and used through the gas outlet pipe, which solves the problem of the existing coal mine underground gas purification device and its purification method, which are cumbersome and time-consuming, and affect the coal mine. The problem of mining progress.

2. The coal mine underground gas purification device and its purification method are provided with an electric push rod, which can drive the telescopic column to move relative to the direction away from the horizontal center line of the fixed pile, and the cleaning brush can be driven to move synchronously through the telescopic column, so that the two sides of the cleaning brush can be moved. Contacting the bottom surface of the separation screen plate and the gas purification box respectively, the driving cylinder can drive the linkage plate to move to the right through the telescopic rod. During the process of the linkage plate moving to the right, it can drive the fixed pile and the cleaning brush to move with it, and the moving cleaning brush can be moved separately. The separation screen plate and the gas purification box are cleaned, and the movement of the linkage plate can be limited and guided through the limit card slot, which avoids the lack of its own cleaning function of the existing gas purification device, which easily affects the subsequent purification of the device. function problem.

3. The coal mine underground gas purification device and its purification method are provided with a cleaning channel, which can facilitate the cleaning of the debris in the gas purification box. The servo motor can drive the ball screw to rotate, and the ball screw can rotate the transmission nut. In the process of moving, the transfer nut can drive the sealing plate to move with it, so that the gas purification box can be opened.

4. The coal mine underground gas purification device and its purification method are provided with a limit plate, which can generate elasticity between the return spring and the elastic plate, so that the elastic plate can be close to or away from the absorbent cotton board, thereby facilitating the loading and unloading of the absorbent cotton board. Replacement, the heating rod can heat the water-absorbing cotton plate by transferring its own heat to the water-absorbing cotton plate, so that it can be dried, and the service life of the water-absorbing cotton plate can be improved.

Description of drawings

Fig. 1 is the front view structure schematic diagram of the present invention;

Fig. 2 is a schematic diagram of a partially enlarged structure at place A in Fig. 1 of the invention;

Fig. 3 is the left side structural schematic diagram of the gas purification box of the present invention;

Fig. 4 is the internal sectional schematic diagram of the gas purification box of the present invention;

FIG. 5 is a schematic diagram of the external structure of the present invention.

In the picture: 1. Gas purification box; 2. Telescopic rod; 3. Drive cylinder; 4. Linkage plate; 5. First suction pump; 6. Intake pipe; 7. Cleaning brush; 8. Telescopic column; 9. Electric push rod; 10. Fixed pile; 11. Cleaning channel; 12. Sealing plate; 13. Ball screw; 14. Transmission nut; 15. Separating screen plate; 16. Limit plate; 17. Return spring; 18 , elastic plate; 19, absorbent cotton plate; 20, servo motor; 21, heating rod; 22, first activated carbon plate; 23, second activated carbon plate; 24, gas pipeline; 25, second suction pump; 26, Air collecting box; 27. Air outlet pipe; 28. Limit slot; 29. Guide chute; 30. Outer box door.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

In the description of the present invention, unless otherwise stated, "plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer" The orientation or positional relationship indicated by , "front end", "rear end", "head", "tail", etc. are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, not An indication or implication that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, is not to be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc. are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection. Ground connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Please refer to FIGS. 1 to 5 , the present invention provides a technical solution: an underground gas purification device in a coal mine and a purification method thereof, comprising a gas purification box 1 and a cleaning brush 7 . Air pump 5, and the connection between the first air suction pump 5 and the gas purification box 1 is installed with an intake pipe 6, a driving cylinder 3 is installed inside the gas purification box 1, and a telescopic rod 2 is connected to the right side of the driving cylinder 3 , the right side of the telescopic rod 2 is connected with a linkage plate 4, and the right side of the linkage plate 4 is installed with a fixed pile 10, the front and rear sides of the linkage plate 4 are provided with limit slots 28, and the upper and lower sides of the fixed pile 10 are An electric push rod 9 is installed, and a telescopic column 8 is connected to the position of the electric push rod 9 away from the horizontal centerline of the fixed pile 10. The cleaning brush 7 is installed at the position of the telescopic column 8 away from the horizontal centerline of the fixed pile 10. The right side of the fixed pile 10 is installed. A cleaning channel 11 is arranged on the side, and a guide chute 29 is arranged on the right side of the cleaning channel 11, a sealing plate 12 is installed on the right side of the guiding chute 29, and a ball screw is installed on the front and rear sides of the sealing plate 12 13. A transmission nut 14 is installed on the outside of the ball screw 13, a servo motor 20 is installed above the ball screw 13, a separation screen 15 is installed above the cleaning channel 11, and the left and right sides above the separation screen 15 are The limit plate 16 is fixed, a return spring 17 is connected above the limit plate 16, an elastic plate 18 is connected above the return spring 17, a water-absorbing cotton plate 19 is arranged above the elastic plate 18, and above the water-absorbing cotton plate 19 There are heating rods 21 installed on the left and right sides of the heating rod, a first activated carbon plate 22 is installed above the heating rod 21, a second activated carbon plate 23 is installed above the first activated carbon plate 22, and a second activated carbon plate 23 is installed above the gas purification box 1. A suction pump 25, and a gas pipeline 24 is installed at the connection between the second suction pump 25 and the gas purification box 1, and a gas collecting box 26 is connected to the right side of the gas pipeline 24, and the right side of the gas collecting box 26 is installed There is an outlet pipe 27 , and an outer box door 30 is installed at the front end of the gas purification box 1 .

In the invention: the first air suction pump 5 and the air intake pipe 6 are connected by a thread, and the air intake pipe 6 and the gas purification tank 1 form a communication structure; the first air suction pump 5 can pass the gas The gas is introduced into the gas purification box 1 .

In the invention: the cross-sectional size of the separation screen plate 15 is consistent with the gas purification box 1, and the structure of the separation screen plate 15 is a hollow mesh structure, and the water-absorbing cotton plate 19 is consistent with the cross-sectional size of the gas purification box 1. The water-absorbing cotton plate 19 and the separation screen plate 15 are parallel to each other; the separation screen plate 15 of the hollow mesh structure can separate the gas in the gas purification box 1, so that the particles in the gas are isolated, so as to achieve impurity removal. As a result, the water-absorbing cotton plate 19 can absorb the water vapor in the gas, thereby making the gas more pure, and the first activated carbon plate 22 can dry the gas after adsorbing moisture, thereby improving the drying degree of the gas.

In the invention: the first activated carbon plate 22 and the second activated carbon plate 23 are parallel to each other, and the gas purification box 1 forms a communication structure between the gas collecting box 24 and the gas collecting box 26, and the gas collecting box 26 and the gas outlet pipeline 27 are connected. The second activated carbon plate 23 can adsorb the impurities in the gas gas, so as to achieve the purpose of purification, and the gas gas purified in the gas purification box 1 can be sucked into the gas collecting box 26 through the gas pipeline 24. It is stored in the gas collecting box 26, and the gas is easily discharged and used through the gas outlet pipe 27, which solves the problems of the existing coal mine underground gas purification device and its purification method, which are cumbersome, time-consuming, and affect the progress of coal mining. question.

In the invention: a tensile structure is formed between the electric push rod 9 and the telescopic column 8, and the telescopic column 8 and the cleaning brush 7 are fixedly connected, and the structure of the fixed pile 10 is an internal hollow structure; the electric push rod 9 can drive the telescopic The column 8 moves relative to the direction away from the horizontal centerline of the fixed pile 10, and the cleaning brush 7 can be driven to move synchronously by the telescopic column 8, so that the two sides of the cleaning brush 7 can contact the separation screen 15 and the bottom surface of the gas purification box 1 respectively.

In the invention: the driving cylinder 3 forms a telescopic structure between the telescopic rod 2 and the linkage plate 4, and the fixed pile 10 and the fixed pile 10 are parallel to each other, and the cleaning brush 7 is symmetrically distributed about the horizontal center line of the fixed pile 10, and at the same time The cleaning brush 7 and the separating screen plate 15 are perpendicular to each other, and the linkage plate 4 forms a sliding structure with the gas purification box 1 through the limit slot 28; the driving cylinder 3 can drive the linkage plate 4 to move to the right through the telescopic rod 2, and the When the linkage plate 4 moves to the right, it can drive the fixed pile 10 and the cleaning brush 7 to move with it. The moving cleaning brush 7 can clean the separation screen plate 15 and the gas purification box 1 respectively. The movement of the plate 4 acts as a limit guide, which avoids the problem that the existing gas purification device lacks its own cleaning function and easily affects the subsequent purification function of the device.

In the invention: the cleaning channel 11 and the sealing plate 12 are parallel to each other, and the ball screws 13 are symmetrically distributed with respect to the vertical centerline of the sealing plate 12, and a rotating structure is formed between the servo motor 20 and the ball screw 13, and simultaneously The ball screw 13 runs through the interior of the transmission nut 14; the cleaning channel 11 can facilitate the cleaning of the debris in the gas purification box 1, the servo motor 20 can drive the ball screw 13 to rotate, and the rotation of the ball screw 13 can clean the transmission nut. The transmission nut 14 can drive the sealing plate 12 to move along with it in the process of moving, so that the gas purification box 1 can be opened.

In the invention, the limit plate 16 forms an elastic structure between the return spring 17 and the elastic plate 18, and the return spring 17 is symmetrically distributed with respect to the vertical centerline of the absorbent cotton plate 19; the limit plate 16 can pass the return spring Elasticity is generated between the elastic plate 17 and the elastic plate 18 , so that the elastic plate 18 can be close to or away from the absorbent cotton board 19 , thereby facilitating the installation, removal or replacement of the absorbent cotton board 19 .

In the invention: the heating rod 21 and the absorbent cotton plate 19 are perpendicular to each other, and the heating rod 21 is symmetrically distributed with respect to the vertical centerline of the absorbent cotton board 19; the heating rod 21 can transfer its own heat to the absorbent cotton board 19, The absorbent cotton sheet 19 is heated so that it can be dried, and the service life of the absorbent cotton sheet 19 is improved.

In the invention: the purification method of the coal mine underground gas purification device comprises the following steps:

S1: after the gas is introduced into the gas purification box 1, due to the properties of the gas itself, it naturally moves upward, and when passing through the separation screen 15, the separation screen 15 is used for solid-gas separation;

S2: When the gas gas after the solid-gas separation continues to move upward, it passes through the water-absorbing cotton plate 19, and the water-absorbing cotton plate 19 absorbs its internal moisture, and can then be dehydrated;

S3: After the dehydration, the gas continues to move upward through the first activated carbon plate 22 and the second activated carbon plate 23 in sequence, and the first activated carbon plate 22 and the second activated carbon plate 23 respectively dry and purify it.

To sum up, the coal mine underground gas purification device and its purification method, when in use, firstly start the first suction pump 5, and the first suction pump 5 introduces the gas into the gas purification box 1 through the intake pipe 6, because the gas itself The characteristics of the gas, make the gas will continue to move upward after entering the gas purification box 1, the large particles in the gas fall directly into the bottom of the gas purification box 1 due to its own gravity, and the rest of the gas gas accompanied by small particles of impurities pass upward through the hollow mesh. When the separation screen plate 15 of the structure is used, the separation screen plate 15 can separate the gas from solid and gas, and other small particles of impurities are isolated to the separation screen plate 15, so as to achieve the effect of impurity removal; secondly, the separated gas The gas passes upward through the water-absorbing cotton plate 19. After the water-absorbing cotton plate 19 adsorbs the water vapor in the gas, the gas continues to pass upward through the first activated carbon plate 22. The first activated carbon plate 22 dries the gas after adsorbing moisture, thereby The drying degree of the gas is improved, and the dried gas passes through the second activated carbon plate 23, and the second activated carbon plate 23 adsorbs the impurities in the gas gas, so that the gas gas can achieve the purpose of purification; and then start the second suction pump 25 , the second suction pump 25 sucks the purified gas in the gas purification box 1 into the gas collection box 26 through the gas transmission pipeline 24, and the gas collection box 26 stores it. When the purified gas needs to be used later , the gas can be discharged through the air outlet pipe 27; then start the servo motor 20, the servo motor 20 drives the ball screw 13 to rotate, and the ball screw 13 rotates the transmission nut 14. The middle drive the sealing plate 12 to move up accordingly, so that the gas purification box 1 can be opened, the guide chute 29 plays a limiting role on the upward movement of the sealing plate 12, and then the electric push rod 9 is activated, and the electric push rod 9 drives the telescopic column 8 moves relative to the direction away from the horizontal center line of the fixed pile 10, and drives the cleaning brush 7 to move synchronously through the telescopic column 8, so that the upper and lower sides of the cleaning brush 7 can contact the separation screen 15 and the bottom surface of the gas purification box 1 respectively, and then Activate the driving cylinder 3, and the driving cylinder 3 drives the linkage plate 4 to move to the right through the telescopic rod 2. During the process of the linkage plate 4 moving to the right, the fixed pile 10 and the cleaning brush 7 can be driven to move accordingly, and the moving cleaning brush 7 The screen plate 15 and the gas purification box 1 are separated for cleaning, and the movement of the linkage plate 4 is limited and guided through the limit slot 28. The cleaned impurities reach the outside of the gas purification box 1 through the cleaning channel 11 to avoid gas purification. The device lacks its own cleaning function, which easily affects the subsequent purification function of the device; finally, the heating rod 21 is energized, and the heating rod 21 transfers its own heat to the water-absorbing cotton plate 19 to heat the water-absorbing cotton plate 19, so that it can be cleaned. The drying process improves the water-absorbing cotton plate 19, which is beneficial to the subsequent water absorption performance of the water-absorbing cotton plate 19. When the water-absorbing cotton plate 19 needs to be replaced, open the outer box door 30, press down the return spring 17, and the return spring 17 drives the elasticity When the plate 18 is close to the limit plate 16, the water-absorbing cotton plate 19 can be replaced, and the water-absorbing cotton plate 19 can be placed with the tile After the purification box 1 is removed, the return spring 17 is released, and the return spring 17 can drive the elastic plate 18 away from the limit plate 16 .

The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Equivalent replacements or changes to the inventive concept shall all fall within the protection scope of the present invention.

Claims (10)

1. An underground gas purification device in a coal mine, comprising a gas purification box (1) and a cleaning brush (7), characterized in that: a first suction pump (5) is installed on the left side of the gas purification box (1), And an intake pipe (6) is installed at the connection between the first air suction pump (5) and the gas purification box (1), and a driving cylinder (3) is installed inside the gas purification box (1), and the driving cylinder ( 3) A telescopic rod (2) is connected to the right side of the telescopic rod (2), a linkage plate (4) is connected to the right side of the telescopic rod (2), and a fixing pile (10) is installed on the right side of the linkage plate (4). Both the front and rear sides of the linkage plate (4) are provided with limit slots (28), and electric push rods (9) are installed on the upper and lower sides of the fixing pile (10), and the electric push rods (9) are far away from the fixed position. The position of the horizontal center line of the pile (10) is connected with a telescopic column (8), and the cleaning brush (7) is installed on the position of the telescopic column (8) away from the horizontal center line of the fixed pile (10), and the fixed pile (10) A cleaning channel (11) is arranged on the right side of the cleaning channel (11), and a guide chute (29) is arranged on the right side of the cleaning channel (11), and a sealing plate (12) is installed on the right side of the guiding chute (29). In addition, ball screws (13) are installed on both the front and rear sides of the sealing plate (12). A servo motor (20), a separation screen plate (15) is installed above the cleaning channel (11), and limit plates (16) are fixed on the left and right sides above the separation screen plate (15). A return spring (17) is connected above the plate (16), and an elastic plate (18) is connected above the return spring (17), and a water-absorbing cotton plate (19) is arranged above the elastic plate (18), And heating rods (21) are installed on the left and right sides above the absorbent cotton plate (19), and a first activated carbon plate (22) is installed above the heating rod (21), and above the first activated carbon plate (22) A second activated carbon plate (23) is installed, a second suction pump (25) is installed above the gas purification box (1), and the connection between the second suction pump (25) and the gas purification box (1) A gas transmission pipeline (24) is installed, a gas collecting box (26) is connected to the right side of the gas transmission pipeline (24), and an air outlet pipeline (27) is installed on the right side of the gas collecting box (26). An outer box door (30) is installed at the front end of the purification box (1). 2. A coal mine underground gas purification device according to claim 1, characterized in that: the first suction pump (5) and the air intake pipe (6) are connected by a thread, and the air intake pipe (6) ) and the gas purification box (1) form a communication structure. 3. A coal mine underground gas purification device according to claim 1, characterized in that: the separation screen plate (15) is consistent with the cross-sectional size of the gas purification box (1), and the separation screen plate (15) The structure is a hollow mesh structure, and the absorbent cotton plate (19) is consistent with the cross-sectional size of the gas purification box (1). 4. A coal mine underground gas purification device according to claim 1, characterized in that: the first activated carbon plate (22) and the second activated carbon plate (23) are parallel to each other, and the gas purification box (1) A communication structure is formed between the gas transmission pipe (24) and the gas collecting box (26), and a communication structure is formed between the gas collecting box (26) and the gas outlet pipe (27). 5. A coal mine underground gas purification device according to claim 1, characterized in that: a tensile structure is formed between the electric push rod (9) and the telescopic column (8), and the telescopic column (8) is connected to the cleaning The brushes (7) are fixedly connected, and the structure of the fixed pile (10) is an internal hollow structure. 6. A coal mine underground gas purification device according to claim 1, characterized in that: the driving cylinder (3) forms a telescopic structure between the telescopic rod (2) and the linkage plate (4), and the fixed pile ( 10) and the fixing pile (10) are parallel to each other, and the cleaning brush (7) is symmetrically distributed with respect to the horizontal centerline of the fixing pile (10), and at the same time, the cleaning brush (7) and the separating screen plate (15) are perpendicular to each other , the linkage plate (4) forms a sliding structure between the limit card slot (28) and the gas purification box (1). 7. A coal mine underground gas purification device according to claim 1, characterized in that: the cleaning channel (11) and the sealing plate (12) are parallel to each other, and the ball screw (13) is about the sealing plate The vertical centerline of (12) is symmetrically distributed, and a rotating structure is formed between the servo motor (20) and the ball screw (13), and the ball screw (13) penetrates the inside of the transmission nut (14). 8. The coal mine underground gas purification device according to claim 1, wherein the limit plate (16) forms an elastic structure between the return spring (17) and the elastic plate (18), and the return spring (16) forms an elastic structure. The position springs (17) are symmetrically distributed with respect to the vertical centerline of the absorbent cotton board (19). 9. A coal mine underground gas purification device according to claim 1, characterized in that: the heating rod (21) and the water-absorbing cotton board (19) are perpendicular to each other, and the heating rod (21) is about the water-absorbing cotton board The vertical centerlines of (19) are symmetrically distributed. 10. A coal mine underground gas purification device according to any one of claims 1-9, the purification method of the coal mine underground gas purification device comprises the following steps: S1: after the gas gas is introduced into the gas purification box (1), due to the properties of the gas gas itself, it naturally moves upward, and when passing through the separation screen plate (15), the separation screen plate (15) is used for solid-gas separation; S2: when the gas after the solid-gas separation continues to move upward, it passes through the water-absorbing cotton plate (19), and the water-absorbing cotton plate (19) absorbs its internal water vapor, so that it can be dehydrated; S3: The gas continues to move upwards after being dehydrated and passes through the first activated carbon plate (22) and the second activated carbon plate (23) in turn, and the first activated carbon plate (22) and the second activated carbon plate (23) are dried and dried respectively. Purify.

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