Coal bed gas impurity removal device

Abstract

The invention relates to the technical field of coal bed gas impurity removal equipment, in particular to a coal bed gas impurity removal device which comprises a removal supporting table, the top of the removal supporting table is fixedly connected with a removal box, and the side wall of the removal box is fixedly connected with a gas inlet pipe. Unfiltered coal bed gas enters from the gas inlet pipe, due to the fact that the coal bed gas is small in relative density, lighter than air and prone to flowing to the high position, the coal bed gas penetrates through the screening baffle and drives impurities to pass through the screening baffle, the screening baffle filters the impurities of the coal bed gas, the water pump sucks water at the bottom into the water spraying pipe, and water flows through the spiral rotating plate; a spiral rotating plate rotates to increase the pressure intensity of water, water flow enters a rotating round box through a connecting pipe, centrifugal force is facilitated, the flow speed of the water flow is increased, an arc-shaped guide plate guides the water flow, the water can be sprayed out through an atomizing nozzle through the pressure intensity and the centrifugal force, and impurities filtered in a screening baffle are continuously impacted and separated from the inner wall.

Description

Technical Field

[0001] The invention relates to the technical field of coal bed methane impurity removal equipment, in particular to a coal bed methane impurity removal device. Background Art

[0002] The raw gas extracted from coalbed methane wells is generally at a high pressure and contains a certain amount of water, hydrogen sulfide, carbon dioxide and some solid impurities. There are clear regulations on the coalbed methane pressure used in people's production and life. During the transportation of high-pressure coalbed methane, the solid particles in it will cause erosion damage to the pipe wall. The gases in coalbed methane are mainly hydrogen sulfide and carbon dioxide. Coalbed methane needs to be removed before subsequent liquefaction or collection. As we all know, coalbed methane refers to a type of combustible gas existing in nature. It is a fossil fuel, including gases formed by various natural processes in the atmosphere, hydrosphere and lithosphere. Coalbed methane will contain solid impurities such as mud, rock particles, etc. In the process of coalbed methane production, it is necessary to separate the solid impurities in the coalbed methane through a coalbed methane impurity separation and recovery device.

[0003] At present, coalbed methane causes solid impurities to accumulate and block pipelines or cause physical damage. During the transportation of high-pressure coalbed methane, the solid particles in it will cause erosion damage to the pipe wall. Coalbed methane processing technology will have problems such as liquid phase fragmentation and entrainment, resulting in low separation efficiency and unable to meet the gas-liquid separation requirements of coalbed methane in long-distance pipeline transportation. However, in the case of high-liquid coalbed methane, the coalescing filter element may be easily blocked, so it needs to be replaced frequently, which undoubtedly increases the processing cost. At the same time, the blockage increases the safety hazard of the device. The solid impurities therein have a certain impact force and will damage the filtering and separation structure in the device, thereby affecting the filtering effect. Summary of the invention

[0004] The purpose of the present invention is to provide a coalbed methane impurity removal device to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a coalbed methane impurity removal device, comprising a removal support platform, a removal box is fixedly connected to the top of the removal support platform, an air inlet pipe is fixedly connected to the side wall of the removal box, an air outlet pipe is fixedly connected to the top of the air inlet pipe, one end of the air outlet pipe passes through the top of the removal box and extends to the inside, a water suction pipe is fixedly connected to the inner wall of the removal box, one end of the water suction pipe passes through the side wall of the removal box and extends to the inside, and further comprising: The rotating mechanism includes a fixed seat fixedly connected to the top of the stripping box, the inner wall of the fixed seat is fixedly connected to a servo motor, the output end of the servo motor passes through the top of the stripping box and extends to the inside, the side wall of the servo motor is fixedly connected to a rotating wheel, the output end of the servo motor passes through the middle axis of the side wall of the rotating wheel and extends to the outside, the side wall of the rotating wheel is sleeved with a belt, and the side wall of the belt is transmission-connected to a rotating pulley; The stripping mechanism includes a rotating rod fixedly connected to the inner wall of the rotating pulley, the top of the rotating rod is rotatably connected to one end of the water spray pipe, the rotating rod passes through the top of the stripping box and extends to the inside, the inner wall of the rotating rod is fixedly connected with a spiral rotating plate, the bottom of the rotating rod is fixedly connected with a connecting pipe, and the end of the connecting pipe away from the rotating rod is fixedly connected with a support rod.

[0006] Furthermore, the removal device also includes a rotating circular box fixedly connected to the side of the support rod, the side wall of the rotating rod is fixedly connected to the side wall of the rotating circular box, the bottom of the inner wall of the rotating circular box is fixedly connected with an arc guide plate, the bottom of the inner wall of the rotating circular box is provided with a connecting hole, the bottom of the rotating circular box is fixedly connected with an atomizing nozzle, and the inner wall of the connecting hole is through-connected with the atomizing nozzle.

[0007] Furthermore, a reciprocating driving mechanism is arranged on the top of the servo motor, and the reciprocating driving mechanism comprises a rotating shaft fixedly connected to the output end of the servo motor, a side wall of the rotating shaft is fixedly connected to an oblique circular rotating plate, and a limiting cylinder is fixedly connected to the top of the inner wall of the stripping box.

[0008] Furthermore, the reciprocating pushing mechanism also includes a limiting support block fixedly connected to the inner wall of the limiting cylinder, the side wall of the limiting support block is fixedly connected to a sliding rod, the side wall of the sliding rod is slidably connected to a clamping column, and the side wall of the clamping column is provided with a sliding groove.

[0009] Furthermore, the side wall of the limiting support block is slidably connected to the side wall of the clamping column, the side wall of the clamping column is provided with a connecting slot, and the inner wall of the connecting slot is slidably connected to an oblique circular rotating plate.

[0010] Furthermore, a vibrating screening mechanism is provided on the inner wall of the stripping box, and the vibrating screening mechanism includes a supporting slide bar fixedly connected to the inner wall of the stripping box, the side wall of the supporting slide bar is slidably connected to a connecting seat, the side wall of the connecting seat is fixedly connected to a plurality of screening baffles, and the top of the screening baffle is arranged in contact with the bottom of the clamping column.

[0011] Furthermore, the vibrating screening mechanism also includes a return spring fixedly connected to the bottom of the screening baffle, the end of the return spring away from the screening baffle is fixedly connected to a support seat, and the side wall of the support seat is fixedly connected to the inner wall of the stripping box.

[0012] Furthermore, one end of the water suction pipe is fixedly connected to a water pump, the side wall of the water pump is fixedly connected to the side wall of the removal box, the top of the water pump is fixedly connected to a water spray pipe, one end of the water suction pipe is in contact with a cleaning box, the cleaning box is slidably connected to the bottom of the removal box, and a cleaning groove is provided on the side wall of the cleaning box.

[0013] Furthermore, a method for removing impurities from coalbed methane comprises the following steps: S1: Unfiltered coalbed methane enters from the air inlet pipe. Since the relative density of coalbed methane is small and it is lighter than air, it tends to flow upwards, causing the coalbed methane to pass through the screening baffle. The coalbed methane drives the impurities through the screening baffle, causing the screening baffle to filter the impurities in the coalbed methane.

[0014] S2: Water is added to the inside of the removal box, and the water pump sucks the bottom water into the water spray pipe. The servo motor drives the rotating wheel to rotate, and the rotating wheel drives the belt to move, so that the rotating pulley drives the rotating rod to rotate, and the rotating rod causes the spiral rotating plate to rotate. The water flows through the spiral rotating plate, and the rotation of the spiral rotating plate increases the water pressure. The water flows into the rotating circular box through the connecting pipe. The rotating circular box rotates, which is beneficial to the centrifugal force and increases the water flow rate. The arc guide plate guides the water flow. The pressure and centrifugal force can make the water spray out through the atomizing nozzle, so that the impurities filtered in the screening baffle are continuously impacted and detached from the inner wall.

[0015] S3: Since coalbed methane is insoluble in water, when the dust and impurities carried by the coalbed methane come into contact with the water sprayed from the atomizing nozzle, due to the high density of water, when the coalbed methane passes through the water, the dust carried by it comes into contact with the water, thereby increasing the mass of the dust and increasing the weight, thereby reducing the dust and water content.

[0016] S4: The rotating shaft drives the inclined circular rotating plate to rotate, and the rotation of the inclined circular rotating plate increases the flow rate of the coalbed methane. The inclined circular rotating plate drives the clamping column to rise and fall, and the clamping column slides and limits through the sliding rod. The clamping column squeezes the screening baffle, thereby causing the screening baffle to vibrate. The connecting seat moves on the screening baffle, and the reset spring resets it, causing it to vibrate. Under this effect, the screening baffle is cleaned.

[0017] The present invention has the following beneficial effects: 1. In the coalbed methane impurity removal device, unfiltered coalbed methane enters from the air inlet pipe. Since the relative density of coalbed methane is small and it is lighter than air, it is easy to flow to higher places, so that the coalbed methane passes through the screening baffle. The coalbed methane drives the impurities through the screening baffle, and the screening baffle filters the impurities in the coalbed methane, thereby classifying and separating the solid impurities in the coalbed methane, achieving a good separation effect on the coalbed methane.

[0018] 2. A coalbed methane impurity removal device, water is added to the inside of the removal box, and the water pump sucks the bottom water into the water spray pipe. The servo motor drives the rotating wheel to rotate, and the rotating wheel drives the belt to move, so that the rotating pulley drives the rotating rod to rotate, and the rotating rod causes the spiral rotating plate to rotate. The water flows through the spiral rotating plate, and the rotation of the spiral rotating plate increases the water pressure. The water flows into the rotating circular box through the connecting pipe, and the rotating circular box rotates, which is beneficial to the centrifugal force and increases the water flow rate. The arc guide plate guides the water flow. The pressure and centrifugal force can make the water sprayed through the atomizing nozzle, so that the impurities filtered in the screening baffle are continuously impacted and detached from the inner wall, thereby achieving the effect of removing impurities and preventing blockage to achieve a sufficient filtering effect on the incoming coalbed methane.

[0019] 3. This coalbed methane impurity removal device, since coalbed methane is insoluble in water, when the coalbed methane carries dust and impurities and contacts the water sprayed from the atomizing nozzle, due to the high density of water, when the coalbed methane passes through the water, the dust carried by it contacts the water, thereby increasing the dust mass and increasing the weight, thereby reducing the dust and water content, making it easier to purify the coalbed methane, and successively and specifically separating the solid impurities and water in the coalbed methane, ultimately achieving a good separation effect on the coalbed methane.

[0020] 4. In this coalbed methane impurity removal device, the rotating shaft drives the inclined circular rotating plate to rotate, the rotation of the inclined circular rotating plate increases the flow rate of the coalbed methane, the inclined circular rotating plate drives the clamping column to rise and fall, the clamping column slides and limits through the sliding rod, the clamping column squeezes the screening baffle, so that the screening baffle vibrates, the connecting seat moves on the screening baffle, and the reset spring resets it to make it vibrate. Under this effect, the screening baffle is cleaned, thereby reducing the risk of blockage and reducing the loss of filter materials, thereby reducing costs and effectively extending the service life of the device.

[0021] Of course, any product implementing the present invention does not necessarily need to achieve all of the above advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a side sectional view of the overall structure of the present invention; Figure 3 It is a schematic diagram of the overall structure of the rotating mechanism of the present invention; Figure 4 It is an enlarged cross-sectional view of the overall structure of the removal mechanism of the present invention; Figure 5 It is a schematic diagram of the overall internal structure of the present invention; Figure 6 It is an enlarged cross-sectional view of the overall structure of the reciprocating driving mechanism of the present invention; Figure 7 It is a schematic diagram of the overall structure of the vibration screening mechanism of the present invention; Figure 8 It is a cross-sectional view of the overall internal structure of the present invention; Fig. 9 The figure is a flow chart of the method of the present invention.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows: In the figure: 1. Removal support platform; 101. Removal box; 102. Air inlet pipe; 103. Air outlet pipe; 104. Water suction pipe; 105. Water pump; 106. Water spray pipe; 107. Cleaning box; 108. Cleaning tank; 2. Removal mechanism; 201. Rotating rod; 202. Spiral rotating plate; 203. Connecting pipe; 204. Support rod; 205. Rotating round box; 206. Arc guide plate; 207. Connecting hole; 208. Atomizing nozzle; 3. Reciprocating driving mechanism; 301 , rotating shaft; 302, oblique circular rotating plate; 303, limiting cylinder; 304, limiting support block; 305, sliding rod; 306, clamping column; 307, slide groove; 308, connecting slot; 4, vibration screening mechanism; 401, supporting slide rod; 402, connecting seat; 403, screening baffle; 404, reset spring; 405, supporting seat; 5, rotating mechanism; 501, fixed seat; 502, servo motor; 503, rotating wheel; 504, belt; 505, rotating pulley. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example 1

[0027] See also Figure 1 - Figure 5As shown, the present invention is a coalbed methane impurity removal device, comprising a removal support platform 1, a removal box 101 is fixedly connected to the top of the removal support platform 1, an air inlet pipe 102 is fixedly connected to the side wall of the removal box 101, an air outlet pipe 103 is fixedly connected to the top of the air inlet pipe 102, one end of the air outlet pipe 103 passes through the top of the removal box 101 and extends to the inside, a water suction pipe 104 is fixedly connected to the inner wall of the removal box 101, water is added to the inside of the removal box 101, a water pump 105 sucks the bottom water into the water spray pipe 106, and the water suction pipe One end of the pipe 104 penetrates the side wall of the removal box 101 and extends to the inside, one end of the water suction pipe 104 is fixedly connected to a water pump 105, the side wall of the water pump 105 is fixedly connected to the side wall of the removal box 101, the top of the water pump 105 is fixedly connected to a water spray pipe 106, one end of the water suction pipe 104 is contacted with a cleaning box 107, the cleaning box 107 is slidably connected to the bottom of the removal box 101, and the side wall of the cleaning box 107 is provided with a cleaning groove 108. The purpose of this arrangement is to facilitate the water suction pipe 104 not to be blocked, and also includes: The rotating mechanism 5 includes a fixed seat 501 fixedly connected to the top of the stripping box 101, a servo motor 502 is fixedly connected to the inner wall of the fixed seat 501, the output end of the servo motor 502 passes through the top of the stripping box 101 and extends to the inside, a rotating wheel 503 is fixedly connected to the side wall of the servo motor 502, the output end of the servo motor 502 passes through the middle axis of the side wall of the rotating wheel 503 and extends to the outside, a belt 504 is sleeved on the side wall of the rotating wheel 503, and a rotating pulley 505 is transmission-connected to the side wall of the belt 504, the servo motor 502 drives the rotating wheel 503 to rotate, and the rotating wheel 503 drives the belt 504 to move; The stripping mechanism 2 includes a rotating rod 201 fixedly connected to the inner wall of the rotating pulley 505, the top of the rotating rod 201 is rotatably connected to one end of the water spray pipe 106, the rotating rod 201 passes through the top of the stripping box 101 and extends to the inside, the inner wall of the rotating rod 201 is fixedly connected with a spiral rotating plate 202, the bottom of the rotating rod 201 is fixedly connected with a connecting pipe 203, and the end of the connecting pipe 203 away from the rotating rod 201 is fixedly connected with a support rod 204, the stripping device 2 also includes a rotating circular box 205 fixedly connected to the side of the support rod 204, the side wall of the rotating rod 201 is fixedly connected to the side wall of the rotating circular box 205, and the inner wall of the rotating circular box 205 is fixedly connected to the side wall of the rotating circular box 205. An arc-shaped guide plate 206 is fixedly connected to the bottom of the wall, a connecting hole 207 is opened at the bottom of the inner wall of the rotating circular box 205, an atomizing nozzle 208 is fixedly connected to the bottom of the rotating circular box 205, and the inner wall of the connecting hole 207 is connected with the atomizing nozzle 208. The rotating rod 201 rotates the spiral rotating plate 202, and the water flows through the spiral rotating plate 202. The rotation of the spiral rotating plate 202 increases the water pressure, and the water flows into the rotating circular box 205 through the connecting pipe 203. The rotating circular box 205 rotates, which is beneficial to the centrifugal force and increases the water flow rate. The arc-shaped guide plate 206 guides the water flow, and the water can be sprayed out through the atomizing nozzle 208 through the pressure and centrifugal force.

[0028] Example 2

[0029] The difference from Example 1 is that See also Figure 4 - Figure 7A reciprocating driving mechanism 3 is arranged on the top of the servo motor 502, and the reciprocating driving mechanism 3 includes a rotating shaft 301 fixedly connected to the output end of the servo motor 502, and the side wall of the rotating shaft 301 is fixedly connected to the oblique circular rotating plate 302, and the top of the inner wall of the removal box 101 is fixedly connected to the limiting cylinder 303, and the reciprocating driving mechanism 3 also includes a limiting support block 304 fixedly connected to the inner wall of the limiting cylinder 303, and the side wall of the limiting support block 304 is fixedly connected to the sliding rod 305, and the side wall of the sliding rod 305 is slidably connected to the card column 306, and the side wall of the card column 306 is provided with a sliding groove 307, and the side wall of the limiting support block 304 is slidably connected to the side wall of the card column 306, and the side wall of the card column 306 is provided with a connecting card groove 307. 08. The inner wall of the connecting slot 308 is slidably connected with an oblique circular rotating plate 302. The rotating shaft 301 drives the oblique circular rotating plate 302 to rotate. The rotation of the oblique circular rotating plate 302 increases the flow rate of the coalbed methane. The oblique circular rotating plate 302 drives the clamping column 306 to rise and fall. The clamping column 306 is limited by the sliding rod 305. The clamping column 306 squeezes the screening baffle 403, so that the screening baffle 403 vibrates. The connecting seat 402 moves on the screening baffle 403, and the reset spring 404 resets it to make it vibrate. Under this effect, the screening baffle 403 is cleaned, thereby reducing the risk of blockage and reducing the loss of filter materials, thereby reducing costs and effectively extending the service life of the device.

[0030] The inner wall of the stripping box 101 is provided with a vibrating screening mechanism 4, which includes a supporting slide bar 401 fixedly connected to the inner wall of the stripping box 101, a connecting seat 402 is slidably connected to the side wall of the supporting slide bar 401, a plurality of screening baffles 403 are fixedly connected to the side wall of the connecting seat 402, the top of the screening baffle 403 is in contact with the bottom of the clamping column 306, and the vibrating screening mechanism 4 also includes a reset spring 404 fixedly connected to the bottom of the screening baffle 403, and the reset spring One end of the spring 404 away from the screening baffle 403 is fixedly connected to a support seat 405, and the side wall of the support seat 405 is fixedly connected to the inner wall of the removal box 101. Since the relative density of coalbed methane is small and it is lighter than air, it is easy to flow to higher places, allowing the coalbed methane to pass through the screening baffle 403. The coalbed methane drives the impurities through the screening baffle 403, so that the screening baffle 403 filters the impurities in the coalbed methane, thereby classifying and separating the solid impurities in the coalbed methane, achieving a good separation effect on the coalbed methane.

[0031] When in use, unfiltered coalbed methane enters from the air inlet pipe 102. Since the relative density of coalbed methane is small and it is lighter than air, it is easy to flow upward, so that the coalbed methane passes through the screening baffle 403. The coalbed methane drives the impurities through the screening baffle 403, so that the screening baffle 403 filters the impurities in the coalbed methane, thereby classifying and separating the solid impurities in the coalbed methane, achieving a good separation effect on the coalbed methane. Water is added to the inside of the removal box 101, and the water pump 105 sucks the bottom water into the water spray pipe 106. The servo motor 502 drives the rotating wheel 503 to rotate, and the rotating wheel 503 drives the belt 50 4 movement, so that the rotating pulley 505 drives the rotating rod 201 to rotate, the rotating rod 201 rotates the spiral rotating plate 202, the water flows through the spiral rotating plate 202, the spiral rotating plate 202 rotates to increase the water pressure, the water flows through the connecting pipe 203 into the rotating round box 205, the rotating round box 205 rotates, which is beneficial to the centrifugal force and increases the water flow rate, the arc guide plate 206 guides the water flow, and the water can be sprayed through the atomizing nozzle 208 through the pressure and centrifugal force, so that the impurities filtered in the screening baffle 403 are continuously impacted and discharged from the inner wall The upper separation can achieve the effect of removing impurities, so as to achieve the full filtering effect on the incoming coalbed methane. Since the coalbed methane is insoluble in water, when the coalbed methane carries dust and impurities and contacts the water sprayed by the atomizing nozzle 208, due to the high density of water, when the coalbed methane passes through the water, the dust carried by the coalbed methane contacts the water, thereby making the dust mass higher and the weight larger, thereby reducing the dust and water content, which is convenient for purifying the coalbed methane. The solid impurities and water in the coalbed methane are separated in turn, and finally a good separation effect of the coalbed methane can be achieved. The rotating shaft 301 drives the oblique circular rotating plate 302 The inclined circular rotating plate 302 rotates to increase the flow rate of the coalbed methane, the inclined circular rotating plate 302 drives the clamping column 306 to rise and fall, the clamping column 306 is limited by the sliding rod 305, the clamping column 306 squeezes the screening baffle 403, so that the screening baffle 403 vibrates, the connecting seat 402 moves on the screening baffle 403, and the reset spring 404 resets it to vibrate, under this effect, the screening baffle 403 is cleaned, thereby reducing the risk of blockage and reducing the loss of filter materials, thereby reducing costs and effectively extending the service life of the device.

[0032] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A coalbed methane impurity removal device, comprising a removal support platform (1), the top of the removal support platform (1) is fixedly connected to a removal box (101), the side wall of the removal box (101) is fixedly connected to an air inlet pipe (102), the top of the air inlet pipe (102) is fixedly connected to an air outlet pipe (103), one end of the air outlet pipe (103) penetrates the top of the removal box (101) and extends to the inside, the inner wall of the removal box (101) is fixedly connected to a water suction pipe (104), one end of the water suction pipe (104) penetrates the side wall of the removal box (101) and extends to the inside, characterized in that: Also includes: A rotating mechanism (5), the rotating mechanism (5) comprising a fixed seat (501) fixedly connected to the top of the stripping box (101), the inner wall of the fixed seat (501) being fixedly connected to a servo motor (502), the output end of the servo motor (502) penetrating the top of the stripping box (101) and extending to the inside, the side wall of the servo motor (502) being fixedly connected to a rotating wheel (503), the output end of the servo motor (502) penetrating the middle axis of the side wall of the rotating wheel (503) and extending to the outside, the side wall of the rotating wheel (503) being sleeved with a belt (504), and the side wall of the belt (504) being transmission-connected to a rotating pulley (505); A stripping mechanism (2), the stripping mechanism (2) comprising a rotating rod (201) fixedly connected to the inner wall of a rotating pulley (505), the top of the rotating rod (201) being rotatably connected to one end of a water spray pipe (106), the rotating rod (201) passing through the top of the stripping box (101) and extending to the inner side, the inner wall of the rotating rod (201) being fixedly connected to a spiral rotating plate (202), the bottom of the rotating rod (201) being fixedly connected to a connecting pipe (203), and one end of the connecting pipe (203) away from the rotating rod (201) being fixedly connected to a supporting rod (204).

2. A coal bed methane impurity removal device according to claim 1, characterized in that: The removal device (2) further comprises a rotating circular box (205) fixedly connected to the side of the support rod (204); the side wall of the rotating rod (201) is fixedly connected to the side wall of the rotating circular box (205); an arc-shaped guide plate (206) is fixedly connected to the bottom of the inner wall of the rotating circular box (205); a connecting hole (207) is provided at the bottom of the inner wall of the rotating circular box (205); an atomizing nozzle (208) is fixedly connected to the bottom of the rotating circular box (205); and the atomizing nozzle (208) is connected through the inner wall of the connecting hole (207).

3. A coal bed methane impurity removal device according to claim 2, characterized in that: A reciprocating driving mechanism (3) is arranged on the top of the servo motor (502), the reciprocating driving mechanism (3) comprising a rotating shaft (301) fixedly connected to the output end of the servo motor (502), an oblique circular rotating plate (302) fixedly connected to the side wall of the rotating shaft (301), and a limiting cylinder (303) fixedly connected to the top of the inner wall of the stripping box (101).

4. A coal bed methane impurity removal device according to claim 3, characterized in that: The reciprocating pushing mechanism (3) further comprises a limiting support block (304) fixedly connected to the inner wall of the limiting cylinder (303); a sliding rod (305) is fixedly connected to the side wall of the limiting support block (304); a clamping column (306) is slidably connected to the side wall of the sliding rod (305); and a sliding groove (307) is provided on the side wall of the clamping column (306).

5. A coal bed methane impurity removal device according to claim 4, characterized in that: The side wall of the position-limiting support block (304) is slidably connected to the side wall of the clamping column (306); the side wall of the clamping column (306) is provided with a connecting clamping groove (308); and the inner wall of the connecting clamping groove (308) is slidably connected to an oblique circular rotating plate (302).

6. A coal bed methane impurity removal device according to claim 5, characterized in that: The inner wall of the stripping box (101) is provided with a vibrating screening mechanism (4), the vibrating screening mechanism (4) comprising a supporting slide bar (401) fixedly connected to the inner wall of the stripping box (101), the side wall of the supporting slide bar (401) being slidably connected to a connecting seat (402), the side wall of the connecting seat (402) being fixedly connected to a plurality of screening baffles (403), the top of the screening baffle (403) being arranged in contact with the bottom of the clamping column (306).

7. A coal bed methane impurity removal device according to claim 6, characterized in that: The vibrating screening mechanism (4) further comprises a return spring (404) fixedly connected to the bottom of the screening baffle (403), one end of the return spring (404) away from the screening baffle (403) being fixedly connected to a support seat (405), and a side wall of the support seat (405) being fixedly connected to an inner wall of the removal box (101).

8. A coal bed methane impurity removal device according to claim 7, characterized in that: One end of the water suction pipe (104) is fixedly connected to a water pump (105), the side wall of the water pump (105) is fixedly connected to the side wall of the removal box (101), the top of the water pump (105) is fixedly connected to a water spray pipe (106), one end of the water suction pipe (104) is provided in contact with a cleaning box (107), the cleaning box (107) is slidably connected to the bottom of the removal box (101), and the side wall of the cleaning box (107) is provided with a cleaning groove (108).

9. A method for removing impurities from coalbed methane, characterized in that: The steps include: S1: Unfiltered coalbed methane enters from the air inlet pipe (102). Since the relative density of coalbed methane is small and it is lighter than air, it tends to flow upward, so that the coalbed methane passes through the screening baffle (403). The coalbed methane drives impurities through the screening baffle (403), so that the screening baffle (403) filters the impurities in the coalbed methane. S2: water is added to the interior of the removal box (101), the water pump (105) sucks the bottom water into the water spray pipe (106), the servo motor (502) drives the rotating wheel (503) to rotate, the rotating wheel (503) drives the belt (504) to move, so that the rotating pulley (505) drives the rotating rod (201) to rotate, the rotating rod (201) causes the spiral rotating plate (202) to rotate, the water flows through the spiral rotating plate (202), the spiral rotating plate (202) rotates to increase the water pressure, the water flows through the connecting pipe (203) into the rotating circular box (205), the rotating circular box (205) rotates, which is beneficial to the centrifugal force and increases the water flow rate, the arc guide plate (206) guides the water flow, and the pressure and centrifugal force cause the water to be sprayed out through the atomizing nozzle (208), so that the impurities filtered in the screening baffle (403) are continuously impacted and separated from the inner wall; S3: Since coalbed methane is insoluble in water, when the dust and impurities carried by the coalbed methane come into contact with the water sprayed by the atomizing nozzle (208), due to the high density of water, when the coalbed methane passes through the water, the dust carried by the coalbed methane comes into contact with the water, thereby increasing the mass and weight of the dust, thereby reducing the dust and water content; S4: The rotating shaft (301) drives the oblique circular rotating plate (302) to rotate. The rotation of the oblique circular rotating plate (302) increases the flow rate of the coalbed methane. The oblique circular rotating plate (302) drives the clamping column (306) to rise and fall. The clamping column (306) is limited by sliding through the sliding rod (305). The clamping column (306) squeezes the screening baffle (403), thereby causing the screening baffle (403) to vibrate. The connecting seat (402) moves on the screening baffle (403), and the reset spring (404) resets it, causing it to vibrate. Under this effect, the screening baffle (403) is cleaned.

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