Adjustable multi-layer co-mining equipment and method for coal bed gas mining

Abstract

The invention relates to the technical field of coal bed gas exploitation equipment, in particular to adjustable multi-layer co-exploitation equipment and method for coal bed gas exploitation, and aims to solve the problem that blockage removal and maintenance are needed frequently in the prior art. Comprising an installation base plate anchored to the ground, a well casing pipe used for being inserted into a mine is arranged on the installation base plate, a sealing cover is arranged at the upper end of the well casing pipe in a matched mode, a gas production pipe used for conveying natural gas is arranged at the upper end of the sealing cover, and a plugging component used for plugging multiple gas layers is arranged on the well casing pipe. The device is designed according to existing needs, the problem that underground water is pumped out by constructing a negative pressure structure, a pump body is damaged by impurities in the water is solved, the service life of the device is effectively prolonged, in addition, underground water can be filtered, coal in the underground water can be rapidly recycled, resource waste is avoided, and the device is worthy of popularization and application. And hole cleaning operation can be automatically completed while coal materials are recycled and filtered, continuous work of equipment is guaranteed, and the use efficiency is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of coalbed methane mining equipment, and in particular to adjustable coalbed methane mining equipment and method for multi-layer mining. Background Art

[0002] my country is a large coal producer with abundant coal output. With the mining of coal, the production of coalbed methane, commonly known as "gas", is also very huge. During the mining process of coalbed methane, a water pump is needed to discharge the water in the well, reduce the pressure of the coal seam at the bottom of the well, and realize the mining of coalbed methane. However, since the coalbed methane produced fluid often contains fine solid particle impurities such as coal powder and fine sand, accumulation is formed in the water pump, which greatly reduces the service life of the pump body and increases the overall mining cost of coalbed methane. The existing patent announcement number CN115518435B discloses a coalbed methane mining device for preventing coal powder. Here, a filtering device is set at the water inlet end of the pump body to avoid the influence of particles on the equipment. However, the filtering method here is prone to clogging problems, and the equipment needs to be regularly cleaned and cleaned. At this time, the equipment needs to stop working, affecting the working efficiency of the equipment.

[0003] Based on this, an adjustable multi-layer co-mining device and method for coalbed methane mining is now provided, which can eliminate the disadvantages of existing devices. Summary of the invention

[0004] The purpose of the present invention is to provide an adjustable multi-layer co-mining device and method for coal-bed methane mining, which solves the problem of frequent clearing and maintenance required in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solutions: A multi-layer co-mining device for adjustable coalbed methane extraction, comprising a mounting base anchored to the ground, a well casing for inserting into a mine is provided on the mounting base, a sealing cover is provided at the upper end of the well casing, a gas production pipe for conveying natural gas is provided at the upper end of the sealing cover, a sealing component for sealing multi-layer coal gas layers is provided on the well casing, a water pump for pumping water is also provided inside the well casing, the upper end of the water pumping pipe is connected to the water inlet end of a negative pressure water tank, the negative pressure water tank is fixedly connected to the upper end of the mounting base through a support leg, an air pump for extracting the air inside the negative pressure water tank is provided at the upper end of the negative pressure water tank, an outlet pipe for drainage is provided on the lower side of the air pump, a one-way drainage valve is provided at the outlet pipe, a one-way air inlet valve is provided in the water pumping pipe, and a filtering component for filtering groundwater is provided on the mounting base where the outlet pipe is located.

[0006] On the basis of the above technical solution, the present invention also provides the following optional technical solution: In an optional scheme: the filter component includes a filter outer box connected to the mounting base plate, the bottom of the filter outer box is provided with a sump for storing waste water, one side of the sump is provided with a discharge duct for drainage, a rotating cylinder is rotatably provided inside the filter outer box, one end of the rotating cylinder is rotatably connected to the mounting hole on the filter outer box, the end of the rotating cylinder is provided with a water wheel driving member corresponding to the outlet pipe, a plurality of sliding notches are arranged in an array on the outer side of the rotating cylinder, each sliding notch position is slidably fitted with a filter frame, a plurality of filter holes are arranged on the outer side of the filter frame, a cleaning component for driving the filter frame to clean the holes is provided on the rotating cylinder, a feeding notch is also provided at the end of the rotating cylinder, and a feeding component for feeding out the cleaned coal is provided in the feeding notch.

[0007] In an optional scheme: the cleaning assembly includes vertical guide rods symmetrically arranged on both sides of the filter frame, a horizontally arranged rotating pin is rotatably provided on the outer side of the upper end of the vertical guide rod, and a guide ring is also sleeved on the vertical guide rod. The lower end of the guide ring is connected to the filter frame by a reset spring, the outer side of the guide ring is connected to the rotating cylinder by a guide positioning rod, and a pushing member is provided on the top of the filter outer box to generate thrust for the rotating pin.

[0008] In an optional solution: the pushing member includes a horizontally arranged bridging beam, both ends of which are connected and fixed to the inner top of the filter outer box through a suspension rod, and arc plates are symmetrically provided at both ends of the bridging beam, one end of the arc plate is provided with a guide inclined plate for guiding the rotating pin, and an arc plate is provided at the end of the guide inclined plate, the arc plate is connected and fixed to the end of the bridging beam, and a plurality of vibration protrusions are distributed on the upper end of the arc plate.

[0009] In an optional scheme: the cleaning component also includes a blowing part for blowing air to the filter screen frame, the blowing part includes a plurality of back-blowing pipes distributed on the frame beam, the upper end of the back-blowing pipe is connected with the air guide cross pipe, the air inlet end of the air guide cross pipe is connected with the exhaust end of the inflation piston cylinder through the exhaust duct, the outer side of the inflation piston cylinder is connected and fixed to the inner wall of the filter outer box through a side frame, the upper end of the inflation piston cylinder is provided with a one-way air inlet nozzle for one-way air intake, a piston block is slidingly provided inside the inflation piston cylinder, the piston block is connected to the inner wall of the inflation piston cylinder by a compression spring, a piston push rod is fixedly provided at the lower end of the piston block, a pressure wheel is rotatably provided at the lower end of the piston push rod, and a plurality of support protrusions are arrayed on the outer side of the rotating cylinder, the support protrusions correspond to the positions of the pressure wheel, and the support protrusions correspond to the positions of the filter screen frame.

[0010] In an optional scheme: the feeding component includes two symmetrically arranged transmission fixing plates, a feeding conveyor belt for conveying is provided between the two transmission fixing plates, and protective side plates for guiding coal are symmetrically provided on the upper end of the feeding conveyor belt. The two ends of the transmission fixing plates are connected and fixed to the inner wall of the filter outer box through positioning beams, and a scraper baffle is provided at the end of the feeding conveyor belt located outside the filter outer box, and the scraper baffle is in pressure contact with the transmission surface of the feeding conveyor belt.

[0011] In an optional solution: a collection cylinder for storing coal is provided at the upper end of the installation base plate, and a movable door for taking out coal is provided on the outer side of the collection cylinder.

[0012] In an optional solution: the water wheel drive component includes a water receiving baffle plate arranged at the inner end of the rotating cylinder, the water receiving baffle plate is inclined toward the inner side of the water collecting tank, the water receiving baffle plate array is distributed on the inner wall of the rotating cylinder, and a waterproof baffle ring is fixedly provided at the end of the rotating cylinder to prevent water from overflowing.

[0013] In an optional scheme: the plugging component includes a plurality of single-section pipe sleeves connected to the well casing, a plurality of first air holes are distributed in an array on the outer side of the single-section pipe sleeve, a movable inner tube is rotatably provided on the inner side of the single-section pipe sleeve, a plurality of second air holes are distributed on the movable inner tube, the positions of the second air holes and the first air holes correspond, and a rotating inner ring is provided on the upper end of the movable inner tube.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention is designed according to existing needs. It completes the extraction of groundwater by constructing a negative pressure structure, avoids the problem of impurities in the water damaging the pump body, and effectively improves the life of the equipment. In addition, it can also filter the groundwater and quickly recover the coal therein to avoid waste of resources. While recovering and filtering the coal, it can also automatically complete the hole cleaning operation to ensure the continuous operation of the equipment and the efficiency of its use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of one side of the present invention.

[0016] Figure 2 It is a structural schematic diagram of another side of the present invention.

[0017] Figure 3 It is a schematic diagram of the lower structure of the present invention.

[0018] Figure 4 It is a structural schematic diagram of one side of the filter component of the present invention.

[0019] Figure 5 It is a schematic diagram of the structure of the other side of the filter component of the present invention.

[0020] Figure 6 It is a schematic diagram of the curved plate structure of the present invention.

[0021] Figure 7 It is a schematic structural diagram of the feeding component of the present invention.

[0022] Figure 8 It is a schematic diagram of the filter frame structure of the present invention.

[0023] Fig. 9 It is a schematic diagram of the movable inner tube structure of the present invention.

[0024] Fig.10 It is a schematic diagram of the structure of the inflation piston cylinder of the present invention.

[0025] Reference numerals: mounting base plate 100, gas production pipe 101, water extraction pipe 102, air extraction pump 103, negative pressure water tank 104, cover 105, well casing 106, water outlet pipe 107, single-section pipe sleeve 108, first air hole 109, movable inner pipe 110, second air hole 111, rotating inner ring 112; Filter component 200, pressing wheel 201, inflatable piston cylinder 202, one-way air inlet nozzle 203, exhaust duct 204, filter screen frame 205, auxiliary support ring 206, positioning cross beam 207, feeding notch 208, filter outer box 209, collecting cylinder 210, movable door 211, water collecting tank 212, rotating cylinder 213, sliding notch 214, supporting protrusion 215, piston block 216, guiding inclined plate 217, vibrating protrusion 218, arc plate 219, backflush pipe 220, air guide cross pipe 221, connecting beam 222, suspension rod 223, compression spring 224, piston push rod 225, filter hole 226, guide collar 227, rotating pin 228, vertical guide rod 229, return spring 230, guide positioning rod 231, waterproof baffle ring 232, water receiving baffle plate 233; Feeding component 300 , feeding conveyor belt 301 , protective side plate 302 , conveying fixed plate 303 , and scraping baffle 304 . DETAILED DESCRIPTION

[0026] 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.

[0027] Example 1 like Figure 1-Figure 10As shown, an embodiment of the present invention provides an adjustable multi-layer co-mining device for coalbed methane mining, including a mounting base plate 100 anchored to the ground, a well casing 106 for inserting into a mine is provided on the mounting base plate 100, a sealing cover 105 is provided at the upper end of the well casing 106, a gas production pipe 101 for conveying natural gas is provided at the upper end of the sealing cover 105, a plugging component for plugging multi-layer coal gas layers is provided on the well casing 106, a water pumping pipe 102 for pumping water is also provided inside the well casing 106, the upper end of the water pumping pipe 102 is connected to the water inlet end of the negative pressure water tank 104, The negative pressure water tank 104 is fixedly connected to the upper end of the mounting base plate 100 through the legs. The upper end of the negative pressure water tank 104 is provided with an air pump 103 for extracting the air inside the negative pressure water tank 104. The lower side of the air pump 103 is provided with a water outlet pipe 107 for drainage. The water outlet pipe 107 is provided with a one-way drainage valve. The water pump 102 is provided with a one-way air inlet valve. The mounting base plate 100 where the water outlet pipe 107 is located is provided with a filter component 200 for filtering groundwater. The filter component 200 here can avoid clogging and maintain high-efficiency filtration, thereby recovering coal powder in the groundwater and avoiding waste of resources. The water inlet end of the negative pressure water tank 104 is at a high position, and the water outlet pipe 107 is at a low position; The filter component 200 includes a filter outer box 209 connected to the mounting base 100, a water collection tank 212 for storing waste water is provided at the bottom of the filter outer box 209, a discharge conduit for drainage is provided on one side of the water collection tank 212, a rotating drum 213 is rotatably provided inside the filter outer box 209, one end of the rotating drum 213 is rotatably connected to the mounting hole on the filter outer box 209, and a water wheel driving member corresponding to the water outlet pipe 107 is provided at the end of the rotating drum 213, and the rotating drum 213 can be driven to rotate by the water flow power through the water wheel driving member, without the need for additional power, which has an energy-saving effect. A plurality of sliding notches 214 are arranged in an array outside the rotating cylinder 213, and a filter frame 205 is slidably matched at each sliding notch 214. A plurality of filter holes 226 are arranged on the outer side of the filter frame 205. A cleaning component for driving the filter frame 205 to clean the holes is arranged on the rotating cylinder 213. When the filter frame 205 rotates to the uppermost side, the cleaning component is triggered to start the cleaning work, thereby ensuring the filtering effect of the filter frame 205. A feeding notch 208 is also arranged at the end of the rotating cylinder 213, and a feeding component 300 for feeding the cleaned coal is arranged in the feeding notch 208; The cleaning assembly includes vertical guide rods 229 symmetrically arranged on both sides of the filter screen frame 205, a horizontally arranged rotating pin 228 is rotatably provided on the outer side of the upper end of the vertical guide rod 229, and a guide collar 227 is also sleeved on the vertical guide rod 229, and the lower end of the guide collar 227 is connected to the filter screen frame 205 through a reset spring 230, and the outer side of the guide collar 227 is connected to the rotating cylinder 213 through a guide positioning rod 231, and a pushing member that generates a thrust for the rotating pin 228 is provided at the top of the filter outer box 209, and the filter screen frame 205 slides upward through the pushing member. When the filter screen frame 205 slides upward, the coal accumulated on the surface of the filter screen frame 205 will be scraped away, and the pushing member includes a horizontally arranged frame beam 222, and the two ends of the frame beam 222 are connected and fixed to the top of the filter outer box 209 through a suspension rod 223. The two ends of the connecting beam 222 are symmetrically provided with arc plates 219, one end of the arc plate 219 is provided with a guide inclined plate 217 for guiding the rotating pin 228, the end of the guide inclined plate 217 is provided with an arc plate 219, the arc plate 219 is connected and fixed to the end of the connecting beam 222, and a plurality of vibration protrusions 218 are distributed on the upper end of the arc plate 219. As the rotating cylinder 213 rotates, when the rotating cylinder 213 drives the filter frame 205 to rotate to the upper side, firstly, under the guidance of the guide inclined plate 217, the rotating pin 228 will drive the vertical guide rod 229 to move upward, and the vertical guide rod 229 drives the filter frame 205 to slide, thereby providing power for cleaning. When the rotating pin 228 rolls on the surface of the arc plate 219, the vibration protrusion 218 matches the rotating pin 228, so that the filter frame 205 vibrates, and the coal material on the surface of the filter frame 205 is shaken off, thereby improving the hole cleaning effect; The cleaning assembly also includes a blowing part for blowing air to the filter screen frame 205, and the blowing part includes a plurality of back-blowing pipes 220 distributed on the frame beam 222, the upper end of the back-blowing pipe 220 is communicated with the air guide cross pipe 221, the air inlet end of the air guide cross pipe 221 is communicated with the exhaust end of the inflation piston cylinder 202 through the exhaust duct 204, the outer side of the inflation piston cylinder 202 is connected and fixed to the inner wall of the filter outer box 209 through the side frame, the upper end of the inflation piston cylinder 202 is provided with a one-way air inlet nozzle 203 for one-way air intake, a piston block 216 is slidingly provided inside the inflation piston cylinder 202, the piston block 216 is connected to the inner wall of the inflation piston cylinder 202 through a compression spring 224, a piston push rod 225 is fixedly provided at the lower end of the piston block 216, and a pressing wheel 201 is rotatably provided at the lower end of the piston push rod 225, A plurality of supporting protrusions 215 are arranged in an array on the outer side of the rotating cylinder 213. The supporting protrusions 215 correspond to the positions of the pressing wheel 201. The supporting protrusions 215 correspond to the positions of the filter screen frame 205. When the supporting protrusions 215 rotate to the upper side, the supporting protrusions 215 will press against the pressing wheel 201 to generate thrust. The pressing wheel 201 drives the piston block 216 to move upward through the piston push rod 225. The piston block 216 squeezes the air inside the inflatable piston cylinder 202 upward. The airflow will enter the air guide cross pipe 221 along the exhaust duct 204, and then the airflow will be discharged along the back-blowing pipe 220, so as to back-blow the filter screen frame 205, further blowing away the coal material, and further improving the hole cleaning effect. When the supporting protrusions 215 are away, under the action of the compression spring 224, the piston block 216 is reset to wait for the next compression and blowing. The feeding component 300 includes two symmetrically arranged transmission fixing plates 303, a feeding conveyor belt 301 for conveying is arranged between the two transmission fixing plates 303, and a protective side plate 302 for guiding coal is symmetrically arranged on the upper end of the feeding conveyor belt 301, and both ends of the transmission fixing plates 303 are connected and fixed to the inner wall of the filter outer box 209 through a positioning crossbeam 207, and the coal is received and sent out by the feeding conveyor belt 301 to avoid the accumulation of coal. A scraper baffle 304 is provided at the end of the feeding conveyor belt 301 located outside the filter outer box 209, and the scraper baffle 304 is pressed and contacted with the transmission surface of the feeding conveyor belt 301, so that the material on the surface of the feeding conveyor belt 301 can be removed; An auxiliary support ring 206 is rotatably provided at the end of the rotating cylinder 213, and the auxiliary support ring 206 is connected and fixed to the positioning beam 207, thereby improving the support stability of the rotating cylinder 213; The upper end of the mounting base plate 100 is provided with a collecting cylinder 210 for storing coal, and the outer side of the collecting cylinder 210 is provided with a movable door 211 for taking out coal, so that it is convenient to take out coal later; The water wheel driving member includes a water receiving baffle 233 arranged at the inner end of the rotating drum 213, the water receiving baffle 233 is inclined toward the inner side of the water collecting tank 212, and the water receiving baffle 233 is distributed in an array on the inner wall of the rotating drum 213. A waterproof baffle ring 232 is fixedly provided at the end of the rotating drum 213 to prevent water from overflowing. The water in the water outlet pipe 107 will fall on the water receiving baffle 233 after being discharged. Under the action of the water impact force, the water receiving baffle 233 will drive the rotating drum 213 to rotate, thereby obtaining rotational power; The plugging component includes a plurality of single-section pipe sleeves 108 connected to the well casing 106, a plurality of first air holes 109 are distributed in an array on the outer side of the single-section pipe sleeve 108, a movable inner tube 110 is rotatably provided on the inner side of the single-section pipe sleeve 108, a plurality of second air holes 111 are distributed on the movable inner tube 110, the second air holes 111 and the first air holes 109 are located correspondingly, a rotating inner ring 112 is provided on the upper end of the movable inner tube 110, and the rotating inner ring 112 and the movable inner tube 110 are driven to rotate by a rotating device. When the second air holes 111 and the first air holes 109 are staggered, the coal gas in the area is in a blocked state at this time, and when the second air holes 111 and the first air holes 109 overlap, the coal gas can smoothly enter the well casing 106, thereby facilitating the joint extraction of multiple layers of coal gas, and the coalbed methane at the existing depth can also be cut off as needed.

[0028] Working principle: The gas in the casing 106 is extracted through the gas production pipe 101, and the air in the negative pressure water tank 104 is extracted through the air pump 103, so that the water inside the well casing 106 is sucked into the negative pressure water tank 104. Since both the water inlet and the water outlet of the negative pressure water tank 104 are provided with one-way valves, the water entering the negative pressure water tank 104 will enter the filter component 200 along the water outlet pipe 107, and the water here will not enter the air pump 103, so as to avoid the coal in the water from damaging the power equipment and prolong the life of the power equipment. After the water is discharged along the outlet pipe 107, it will trigger the water wheel drive, thereby driving the rotating drum 213 to rotate. After the water flows into the rotating drum 213, it will pass through the filter holes 226 on the filter frame 205, thereby completing the filtration. Clean water will be stored in the sump 212 at the bottom of the filter outer box 209. As the rotating drum 213 rotates, the rotating drum 213 drives the filter frame 205 to rotate to the upper side. First, under the guidance of the guide inclined plate 217, the rotating pin 228 will drive the vertical guide rod 229 to move upward, and the vertical guide rod 229 drives the filter frame 205 to slide, thereby providing power for cleaning. When the rotating pin 228 rolls on the surface of the arc plate 219, the vibration protrusion 218 matches the rotating pin 228, so that the filter frame 205 vibrates, causing the filter frame The coal on the surface of 205 is shaken off, which improves the hole cleaning effect. The fallen coal will be collected by the feeding component 300 and then smoothly sent out to avoid the accumulation of coal. In addition, the blowing component will produce reverse blowing to the filter frame 205, so that the filter holes 226 on the surface of the filter frame 205 are further unblocked, thereby improving the hole cleaning effect; when the supporting protrusion 215 rotates to the upper side, the supporting protrusion 215 will press the pressure wheel 201 to generate thrust, and the pressure wheel 201 drives the piston block 216 to move upward through the piston push rod 225. The piston block 216 squeezes the air inside the inflation piston cylinder 202 upward, and the airflow will enter the air guide cross pipe 221 along the exhaust duct 204, and then the airflow is discharged along the back-blowing pipe 220, thereby back-blowing the filter frame 205, further blowing away the coal.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An adjustable multi-layer mining device for coalbed methane mining, comprising a mounting base (100) anchored to the ground, a well casing (106) for inserting into a mine is provided on the mounting base (100), a sealing cover (105) is provided at the upper end of the well casing (106), and the characteristics are: The upper end of the sealing cover (105) is provided with a gas production pipe (101) for conveying natural gas, the well casing (106) is provided with a plugging component for plugging multiple layers of coal gas layers, and a water pumping pipe (102) for pumping water is also provided inside the well casing (106), the upper end of the water pumping pipe (102) is connected to the water inlet end of the negative pressure water tank (104), the negative pressure water tank (104) is fixedly connected to the upper end of the mounting base (100) through a support leg, the upper end of the negative pressure water tank (104) is provided with an air pump (103) for pumping out the air inside the negative pressure water tank (104), the lower side of the air pump (103) is provided with a water outlet pipe (107) for draining water, the water outlet pipe (107) is provided with a one-way drain valve, the water pump (102) is provided with a one-way air inlet valve, and the mounting base (100) where the water outlet pipe (107) is located is provided with a filtering component (200) for filtering groundwater.

2. The adjustable multi-layer mining equipment for coalbed methane mining according to claim 1 is characterized in that: The filter component (200) comprises a filter outer box (209) connected to a mounting base plate (100); a water collecting tank (212) for storing waste water is provided at the bottom of the filter outer box (209); a discharge conduit for draining water is provided on one side of the water collecting tank (212); a rotating cylinder (213) is rotatably provided inside the filter outer box (209); one end of the rotating cylinder (213) is rotatably connected to a mounting hole on the filter outer box (209); and a water wheel driving device corresponding to a water outlet pipe (107) is provided at the end of the rotating cylinder (213). The rotating cylinder (213) is provided with a plurality of sliding notches (214) arranged in an array on the outside of the rotating cylinder (213), a filter frame (205) is slidably matched at each sliding notch (214), a plurality of filter holes (226) are distributed on the outer side of the filter frame (205), a cleaning component for driving the filter frame (205) to clean the holes is provided on the rotating cylinder (213), a feeding notch (208) is further provided at the end of the rotating cylinder (213), and a feeding component (300) for feeding cleaned coal is provided in the feeding notch (208).

3. The adjustable multi-layer co-mining equipment for coalbed methane mining according to claim 2 is characterized in that: The cleaning assembly comprises vertical guide rods (229) symmetrically arranged on both sides of the filter screen frame (205); a horizontally arranged rotating pin (228) is rotatably arranged on the outer side of the upper end of the vertical guide rod (229); a guide collar (227) is also sleeved on the vertical guide rod (229); the lower end of the guide collar (227) is connected to the filter screen frame (205) via a return spring (230); the outer side of the guide collar (227) is connected to the rotating cylinder (213) via a guide positioning rod (231); and a pushing member for generating a thrust on the rotating pin (228) is provided at the top of the inner side of the filter outer box (209).

4. The adjustable multi-layer co-mining equipment for coalbed methane mining according to claim 3 is characterized in that: The pushing member comprises a horizontally arranged bridging beam (222), the two ends of the bridging beam (222) being connected and fixed to the inner top of the filter outer box (209) via a suspension rod (223), arc plates (219) being symmetrically arranged at the two ends of the bridging beam (222), a guide inclined plate (217) for guiding a rotating pin (228) being arranged at one end of the arc plate (219), an arc plate (219) being arranged at the end of the guide inclined plate (217), the arc plate (219) being connected and fixed to the end of the bridging beam (222), and a plurality of vibration protrusions (218) being distributed at the upper end of the arc plate (219).

5. The adjustable multi-layer mining equipment for coalbed methane mining according to claim 3 is characterized in that: The cleaning assembly further comprises a blowing part for blowing air to the filter screen frame (205), the blowing part comprising a plurality of back-blowing pipes (220) distributed on the frame beam (222), the upper end of the back-blowing pipe (220) being connected to the air guide cross pipe (221), the air intake end of the air guide cross pipe (221) being connected to the exhaust end of the inflation piston cylinder (202) via an exhaust duct (204), the outer side of the inflation piston cylinder (202) being connected and fixed to the inner wall of the filter outer box (209) via a side frame, the upper end of the inflation piston cylinder (202) being provided with a one-way air intake nozzle (203) for one-way air intake, the inflation piston cylinder (202) A piston block (216) is slidably disposed inside the gas piston cylinder (202), the piston block (216) being connected to the inner wall of the gas-filled piston cylinder (202) via a compression spring (224), a piston push rod (225) being fixedly disposed at the lower end of the piston block (216), a pressing wheel (201) being rotatably disposed at the lower end of the piston push rod (225), a plurality of supporting protrusions (215) being distributed in an array on the outer side of the rotating cylinder (213), the supporting protrusions (215) corresponding to the positions of the pressing wheel (201), and the supporting protrusions (215) corresponding to the positions of the filter screen frame (205).

6. The adjustable multi-layer mining equipment for coalbed methane mining according to claim 1 is characterized in that: The feeding component (300) comprises two symmetrically arranged transmission fixing plates (303), a feeding conveyor belt (301) for conveying is arranged between the two transmission fixing plates (303), a protective side plate (302) for guiding coal is symmetrically arranged at the upper end of the feeding conveyor belt (301), both ends of the transmission fixing plates (303) are connected and fixed to the inner wall of the filter outer box (209) via a positioning crossbeam (207), and a scraper baffle (304) is provided at the end of the feeding conveyor belt (301) located outside the filter outer box (209), and the scraper baffle (304) is in pressure contact with the transmission surface of the feeding conveyor belt (301).

7. The adjustable multi-layer mining equipment for coalbed methane mining according to claim 1 is characterized in that: A collection cylinder (210) for storing coal is provided at the upper end of the installation base plate (100), and a movable door (211) for taking out coal is provided on the outer side of the collection cylinder (210).

8. The adjustable multi-layer mining equipment for coalbed methane mining according to claim 2 is characterized in that: The water wheel driving member comprises a water receiving baffle (233) arranged at the inner end of the rotating cylinder (213); the water receiving baffle (233) is arranged to be inclined toward the inner side of the water collecting tank (212); the water receiving baffle (233) is arranged in an array on the inner wall of the rotating cylinder (213); and a waterproof baffle ring (232) is fixedly provided at the end of the rotating cylinder (213) to prevent water from overflowing.

9. The adjustable multi-layer co-mining equipment for coalbed methane mining according to claim 1 is characterized in that: The plugging component comprises a plurality of single-section pipe sleeves (108) connected to the well casing (106); a plurality of first air holes (109) are arranged in an array on the outer side of the single-section pipe sleeve (108); a movable inner tube (110) is rotatably provided on the inner side of the single-section pipe sleeve (108); a plurality of second air holes (111) are distributed on the movable inner tube (110); the positions of the second air holes (111) and the first air holes (109) correspond to each other; and a rotating inner ring (112) is provided on the upper end of the movable inner tube (110).

10. A method for using the adjustable multi-layer co-mining equipment for coalbed methane mining according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: extract the gas in the well casing (106) through the gas extraction pipe (101), obtain the gas at different depths in the well casing (106) in cooperation with the plugging component, and extract the air in the negative pressure water tank (104) through the air extraction pump (103), so that the water inside the well casing (106) is sucked into the negative pressure water tank (104). Since both the water inlet and the water outlet of the negative pressure water tank (104) are provided with one-way valves, the water entering the negative pressure water tank (104) will enter the filter component (200) along the water outlet pipe (107) to complete filtering; Step 2: When filtering, the cleaning component starts working to ensure that the working position is unobstructed so that the equipment can continue to work; Step three: The coal cleaned by the cleaning assembly is sent out through the feeding component (300) to avoid coal accumulation and realize coal recovery.

Images