A coal bed methane recovery apparatus

Abstract

The application relates to the technical field of coal bed gas collection, and discloses a coal bed gas collection equipment, which comprises a bottom plate, a plurality of supporting legs are fixedly connected to the lower surface of the bottom plate, a working box body is fixedly connected to the upper surface of the supporting legs, a gas storage tank is fixedly connected to the left side of the working box body, a supporting plate is fixedly connected to the upper surface of the bottom plate and the lower surface of the gas storage tank, a gas collecting pipe is fixedly connected to the upper surface of the gas storage tank and the upper surface of the working box body, and a leakage prevention mechanism is integrally formed below the left side of the working box body and below the gas storage tank. The sealing box is arranged to detect whether gas leakage occurs during mining, the pressing rod is arranged to trigger the control button, the control button is arranged to start the alarm to remind the operator, and the pressing rod is arranged to pull the L-shaped rack plate and drive the gear disc to rotate.

Description

Technical Field

[0001] This invention relates to the field of coalbed methane extraction technology, and more specifically to a coalbed methane extraction device. Background Technology

[0002] Coalbed methane refers to hydrocarbon gases stored in coal seams, mainly composed of methane, which are primarily adsorbed on the surface of coal matrix particles, with some remaining free in coal pores or dissolved in coal seam water. It is a associated mineral resource of coal, belonging to unconventional natural gas, and is a clean and high-quality energy source and chemical raw material that has emerged internationally in the last one or two decades.

[0003] In existing coalbed methane collection devices, the contact area between water and coalbed methane is small, resulting in poor dust removal and cooling effects on the coalbed methane, leading to poor coalbed methane purity. Furthermore, during coalbed methane collection, it is impossible to detect whether there is any leakage at the interface, thus posing a threat to the safety of on-site construction personnel. Summary of the Invention

[0004] The main technical problem solved by this invention is to provide a coalbed methane harvesting device. The small contact area between the water flow and the coalbed methane results in poor dust removal and cooling effects, leading to poor coalbed methane purity. Furthermore, during coalbed methane harvesting, it is impossible to detect whether there is a leak at the interface, thus posing a threat to the safety of on-site construction personnel.

[0005] To solve the above-mentioned technical problems, according to one aspect of the present invention, more specifically, a coalbed methane recovery device includes a base plate, a plurality of support legs fixedly connected to the lower surface of the base plate, a working box fixedly connected to the upper surface of the support legs, a gas storage tank fixedly connected to the left side of the working box, a support plate fixedly connected to the lower surface of the gas storage tank and the upper surface of the base plate, a gas collecting pipe fixedly connected to the upper surface of the gas storage tank and the upper surface of the working box, an anti-leakage mechanism integrally formed on the lower left side of the working box and below the gas storage tank, an ash removal mechanism fixedly connected to the rear surface of the working box, and an anti-backflow mechanism fixedly connected inside the working box and above the ash removal mechanism.

[0006] Furthermore, a water pump is fixedly connected to the lower surface of the working box, and a water supply pipe is fixedly connected to the top of the output shaft of the water pump. The end of the water supply pipe away from the water pump is connected to the ash removal mechanism. A support block is symmetrically fixedly connected to the lower interior of the working box. A filter box is slidably connected to the upper surfaces of the two support blocks. The filter box contains multiple multi-faceted spheres. Multiple seepage holes are integrally formed on the upper and lower interior surfaces of the filter box. A drain outlet is integrally formed on the lower right side of the working box.

[0007] Furthermore, the leak-proof mechanism includes an air inlet pipe, the right end of which extends into the interior of the working chamber, and the left end of which is threadedly connected to an air supply pipe. A sealing box is fitted over the outer walls of the air inlet pipe and the outer walls of the air supply pipe. A piston plate is slidably connected inside the sealing box and above the air inlet pipe and the air supply pipe. A pressing rod is fixedly connected to the upper surface of the piston plate, and the top of the pressing rod extends above the sealing box. An L-shaped platform is fixedly connected to the upper surface of the sealing box, a control button is fixedly connected to the lower surface of the L-shaped platform, and an alarm is fixedly connected to the upper surface of the L-shaped platform.

[0008] Furthermore, a pressure relief cylinder is integrally formed on the upper right side of the outer wall of the sealed box. A piston plate is slidably connected inside the pressure relief cylinder. A spring is fixedly connected between the right side of the piston plate and the inner right side of the pressure relief cylinder. Multiple through-holes are integrally formed on the inner right side of the pressure relief cylinder. A gear disk is rotatably connected to the center of the right side of the pressure relief cylinder via a rotating shaft. Multiple through-holes are opened on the left side of the gear disk. An L-shaped rack plate is fixedly connected to the right side of the pressing rod and located outside the sealed box. The front surface of the L-shaped rack plate meshes with the outer wall of the gear disk.

[0009] Furthermore, the ash removal mechanism includes a water storage tank. The rear surface of the water storage tank is fixedly connected to the inner rear surface of the working chamber. Rotating rods are symmetrically connected to the inner front and rear surfaces of the water storage tank via rotating shafts. A rotating cylinder is fixedly connected to the outer wall of the rotating rod located on the right side inside the water storage tank. Multiple actuating plates are fixedly connected to the outer wall of the rotating cylinder. A transmission turntable is fixedly connected to the rear of the outer walls of both rotating rods. A belt is connected to the outer walls of the two transmission turntables. The two rotating rods... A rotating disc is fixedly connected to the front of each of the two outer walls. Multiple locking pins are fixedly connected to the front surfaces of the two rotating discs. Water outlet pipes are provided inside the water storage tank and on the opposite sides of the two rotating rods. The front surfaces of the two water outlet pipes extend to the front of the water storage tank and are fixedly connected to spray heads. Transmission gears are fixedly connected to the outer walls of the two water outlet pipes and inside the water storage tank. Torsion springs are fixedly connected to the outer walls of the two water outlet pipes and between the two transmission gears and the front surface of the water storage tank.

[0010] Furthermore, cams are fixedly connected to the outer walls of the two water outlet pipes and to the outside of the water storage tank. A door is threadedly connected to the front surface of the working box. A guide plate is rotatably connected to the rear surface of the door via a rotating shaft. The guide plate is located below the water storage tank. A spring is fixedly connected to the lower surface of the guide plate and the rear surface of the door.

[0011] Furthermore, the anti-backflow mechanism includes a baffle plate. A support block is symmetrically and slidably connected to the lower surface of the baffle plate inside the working chamber. Multiple through-holes are integrally formed on the upper surface of the baffle plate. T-shaped pipes are fixedly connected to the upper part of each of the multiple air outlets. Sliding grooves are symmetrically formed inside the multiple air outlets and below the multiple T-shaped pipes. Sliding rods are fixedly connected to the interior of each of the multiple sliding grooves. Sliding plates are slidably connected to the outer walls of the two sliding rods inside the multiple air outlets. Insertion pipes are fixedly connected to the upper surface of each of the multiple sliding plates. The multiple sliding plates and the multiple insertion pipes are interconnected. Air baffles are rotatably connected to the right side of each of the multiple insertion pipes via a rotating shaft. Limit blocks are fixedly connected to the left side of each of the multiple insertion pipes and above the multiple air baffles. Springs are fixedly connected between the lower surface of each of the multiple air baffles and the right side of each of the multiple insertion pipes.

[0012] Furthermore, a pressure gauge is provided on the front surface of the gas storage tank.

[0013] Furthermore, the front surface of the door is integrally formed with transparent glass.

[0014] The beneficial effects of the coalbed methane recovery equipment of the present invention are as follows:

[0015] The sealed box is used to detect whether there is any air leakage during mining. The control button is triggered by the push rod, and the alarm is activated by the control button to remind the operator. The push rod pulls the L-shaped rack plate and drives the gear disk to rotate. The rotation of the gear disk aligns the pressure relief hole 2 and pressure relief hole 1, thereby relieving the pressure inside the sealed box.

[0016] The water circulation inside the working box is achieved by setting up a water pump. The water flow drives two rotating rods to rotate, which in turn drives two rotating discs to rotate. Multiple locking pins on the outside of the two rotating discs drive two transmission gears on the outside of the two water outlet pipes to rotate, thereby driving two spray heads to rotate repeatedly on the outside of the water storage tank, so as to deliver water more evenly to the bottom and make the extracted coalbed methane purer.

[0017] Multiple sliding plates are slid upwards along multiple sliding rods by setting air pressure. The sliding of the sliding plates causes the T-shaped pipe to open the baffle plate inside the insertion pipe. After mining is completed, the insertion pipe is closed by setting springs and limit blocks to prevent gas leakage from above, thus preventing waste of resources. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0019] Figure 1 This is a schematic diagram of the overall structure of a coalbed methane recovery device according to the present invention;

[0020] Figure 2 This is a schematic diagram of the overall orthographic structure of the working box of a coalbed methane recovery device according to the present invention;

[0021] Figure 3 This is a top view of the internal structure of the water storage tank of a coalbed methane recovery device according to the present invention.

[0022] Figure 4 This is a schematic diagram of the overall structure of the rotating disk of a coalbed methane recovery device according to the present invention.

[0023] Figure 5 This is a schematic diagram of the internal overall structure of the gas conveying port of a coalbed methane recovery device according to the present invention;

[0024] Figure 6 This is a schematic side view of the overall structure of the door and guide plate of a coalbed methane recovery device according to the present invention.

[0025] Figure 7 This is a cross-sectional schematic diagram of the anti-leakage mechanism of a coalbed methane recovery device according to the present invention.

[0026] Figure 8 This is an exploded cross-sectional view of the pressure relief cylinder of a coalbed methane recovery device according to the present invention.

[0027] Figure 9 This invention relates to a coalbed methane recovery device. Figure 3 Enlarged structural diagram at point A;

[0028] Figure 10 This invention relates to a coalbed methane recovery device. Figure 5 A magnified structural diagram at point B in the middle.

[0029] In the diagram: 1. Base plate; 2. Support leg; 3. Working box; 4. Gas tank; 5. Support plate; 6. Gas collecting pipe; 7. Leakage prevention mechanism; 8. Ash removal mechanism; 9. Backflow prevention mechanism; 10. Water pump; 11. Water supply pipe; 12. Support block one; 13. Filter box; 14. Multifaceted sphere; 15. Water seepage hole; 16. Drain outlet; 17. Pressure relief cylinder; 18. Piston plate two; 19. Spring one; 20. Pressure relief hole one; 21. Gear disc; 22. Pressure relief hole two; 23. L-shaped rack plate; 24. Cam; 25. Box door; 26. Guide plate; 27. Spring two; 28. Pressure gauge; 29. ​​Transparent glass; 701. Air inlet pipe; 702. Gas supply pipe; 703. Sealed box 704. Piston Plate 1; 705. Pressing Rod; 706. L-shaped Platform; 707. Control Button; 708. Alarm; 801. Water Tank; 802. Rotating Rod; 803. Rotating Cylinder; 804. Toggle Plate; 805. Transmission Turntable; 806. Belt; 807. Rotating Disc; 808. Locking Column; 809. Water Outlet Pipe; 810. Sprinkler Head; 811. Transmission Gear; 812. Torsion Spring; 901. Baffle Plate; 902. Support Block 2; 903. Air Inlet; 904. T-shaped Pipe; 905. Sliding Groove; 906. Sliding Rod; 907. Sliding Plate; 908. Insert Pipe; 909. Air Baffle Plate; 910. Limiting Block; 911. Spring 3. Detailed Implementation

[0030] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the present application can be combined with each other.

[0031] According to one aspect of the invention, such as Figure 1-10 As shown, a coalbed methane harvesting device is provided, including a base plate 1, a plurality of support legs 2 fixedly connected to the lower surface of the base plate 1, a working box 3 fixedly connected to the upper surface of the support legs 2, a gas storage tank 4 fixedly connected to the left side of the working box 3, a support plate 5 fixedly connected to the lower surface of the gas storage tank 4 and the upper surface of the base plate 1, a gas collecting pipe 6 fixedly connected to the upper surface of the gas storage tank 4 and the upper surface of the working box 3, an anti-leakage mechanism 7 integrally formed on the lower left side of the working box 3 and below the gas storage tank 4, an ash removal mechanism 8 fixedly connected to the rear surface of the working box 3, and an anti-backflow mechanism 9 fixedly connected inside the working box 3 and above the ash removal mechanism 8.

[0032] When in use, the equipment is supported and fixed by multiple support legs 2. When mining coalbed methane, the coalbed methane is transported to the inside of the working box 3 by the anti-leakage mechanism 7. Then, the coalbed methane is dusted by the ash removal mechanism 8, thereby collecting purer coalbed methane. After the dust removal, the coalbed methane is prevented from flowing back by the anti-backflow mechanism 9. Then, the coalbed methane is transported and stored in the gas storage tank 4 through the gas collection pipe 6.

[0033] In this embodiment, a water pump 10 is fixedly connected to the lower surface of the working box 3, and a water supply pipe 11 is fixedly connected to the top of the output shaft of the water pump 10. The end of the water supply pipe 11 away from the water pump 10 is connected to the ash removal mechanism 8. Support blocks 12 are symmetrically fixedly connected to the lower interior of the working box 3. A filter box 13 is slidably connected to the upper surface of the two support blocks 12. Multiple multi-faceted spheres 14 are arranged inside the filter box 13. Multiple water seepage holes 15 are integrally formed on the upper and lower interior surfaces of the filter box 13. A drain outlet 16 is integrally formed on the lower right side of the working box 3.

[0034] When using this invention, before starting the equipment, a certain amount of pure water needs to be poured into the working chamber 3. Then, the water is circulated and sprayed out through the ash removal mechanism 8 by the water pump 10. The freshly mined coalbed methane comes into contact with multiple multi-faceted spheres 14 inside the filter box 13, thereby increasing the time for the coalbed methane to flow upward. Then, the water sprayed evenly through the ash removal mechanism 8 is sprayed into the inside of the filter box 13 to remove dust from the coalbed methane. The sprayed water flows to the bottom of the working chamber 3 through the seepage holes 15, thereby achieving a circulating purification effect. When the equipment is finished, the wastewater is discharged through the drain outlet 16.

[0035] In this embodiment, the leak prevention mechanism 7 includes an air inlet pipe 701. The right end of the air inlet pipe 701 extends into the interior of the working box 3. The left end of the air inlet pipe 701 is threadedly connected to an air supply pipe 702. The outer side wall of the air inlet pipe 701 and the outer side wall of the air supply pipe 702 are fitted with a sealing box 703. Inside the sealing box 703 and above the air inlet pipe 701 and the air supply pipe 702, a piston plate 704 is slidably connected. A pressing rod 705 is fixedly connected to the upper surface of the piston plate 704. The top end of the pressing rod 705 extends to the top of the sealing box 703. An L-shaped platform 706 is fixedly connected to the upper surface of the sealing box 703. A control button 707 is fixedly connected to the lower surface of the L-shaped platform 706. An alarm 708 is fixedly connected to the upper surface of the L-shaped platform 706.

[0036] When using this invention, during coalbed methane collection, the coalbed methane is transported to the interior of the working chamber 3 through the gas delivery pipe 702 and the gas inlet pipe 701. The sealed box 703 can detect whether there is any leakage at the interface of the gas delivery pipe 702 and the gas inlet pipe 701. When there is a leakage in the gas delivery pipe 702 and the gas inlet pipe 701, the leakage pressure will push the piston plate 704 upward. The piston plate 704 drives the pressing rod 705 to press the control button 707 upward. Pressing the control button 707 activates the alarm 708 to remind the operator and prevent coalbed methane leakage from causing accidents.

[0037] In this embodiment, a pressure relief cylinder 17 is integrally formed on the upper right side of the outer side wall of the sealing box 703. A piston plate 18 is slidably connected inside the pressure relief cylinder 17. A spring 19 is fixedly connected between the right side of the piston plate 18 and the inner right side of the pressure relief cylinder 17. Multiple through-hole pressure relief holes 20 are integrally formed on the inner right side of the pressure relief cylinder 17. A gear disk 21 is rotatably connected to the center of the right side of the pressure relief cylinder 17 via a rotating shaft. Multiple through-hole pressure relief holes 22 are opened on the left side of the gear disk 21. An L-shaped rack plate 23 is fixedly connected to the right side of the pressing rod 705 and located outside the sealing box 703. The front surface of the L-shaped rack plate 23 is meshed with the outer side wall of the gear disk 21.

[0038] When this invention is used, if coalbed methane leaks inside the sealed box 703, the alarm 708 is activated by the piston plate 704. At the same time, the piston plate 704 moves upward, which drives the L-shaped rack plate 23 to move upward. The L-shaped rack plate 23 drives the gear disk 21 to rotate. The rotation of the gear disk 21 aligns the pressure relief hole 22 and the pressure relief hole 20, thereby relieving the pressure inside the sealed box 703 through the piston plate 18, preventing the pressure inside the sealed box 703 from becoming too high and causing a dangerous situation.

[0039] In this embodiment, the ash removal mechanism 8 includes a water storage tank 801. The rear surface of the water storage tank 801 is fixedly connected to the inner rear surface of the working box 3. The inner front and rear surfaces of the water storage tank 801 are symmetrically connected to rotating rods 802 via rotating shafts. A rotating cylinder 803 is fixedly connected to the outer wall of the rotating rod 802 located on the right side inside the water storage tank 801. A plurality of actuating plates 804 are fixedly connected to the outer wall of the rotating cylinder 803. A transmission turntable 805 is fixedly connected to the rear of the outer walls of both rotating rods 802. The outer walls of the two transmission turntables 805 are connected to a belt 806 for transmission. A rotating disc 807 is fixedly connected to the front of each side wall. Multiple locking posts 808 are fixedly connected to the front surface of each of the two rotating discs 807. Water outlet pipes 809 are provided inside the water storage tank 801 and on the opposite side of the two rotating rods 802. The front surface of the two water outlet pipes 809 extends to the front of the water storage tank 801 and is fixedly connected to a spray head 810. A transmission gear 811 is fixedly connected to the outer wall of the two water outlet pipes 809 and inside the water storage tank 801. A torsion spring 812 is fixedly connected between the outer wall of the two water outlet pipes 809 and between the two transmission gears 811 and the inner front surface of the water storage tank 801.

[0040] In use, the invention employs a water pump 10 to deliver water to the interior of a water storage tank 801. The water flow drives multiple actuating plates 804 to rotate on a rotating cylinder 803. The rotating cylinder 803, transmission turntable 805, and belt 806 drive two rotating rods 802 to rotate inside the water storage tank 801. The rotation of the two rotating rods 802 drives two rotating discs 807 to rotate. Multiple engaging pins 808 on the front side of the two rotating discs 807 engage two transmission gears 811 on the outer side of two water outlet pipes 809 to rotate. The two transmission gears 811 drive the two water outlet pipes 809 to rotate, thereby driving two spray heads 810 to rotate on the outer side of the water storage tank 801. When the engaging pins 808 move away from the two transmission gears 811, two torsion springs 812 reset the two spray heads 810. Through water circulation, the spray heads 810 rotate repeatedly, delivering water more evenly downwards to make the extracted coalbed methane purer.

[0041] In this embodiment, cams 24 are fixedly connected to the outer walls of the two water outlet pipes 809 and to the outside of the water storage tank 801. A door 25 is threadedly connected to the front surface of the working box 3. A guide plate 26 is rotatably connected to the rear surface of the door 25 via a rotating shaft. The guide plate 26 is located below the water storage tank 801. A spring 27 is fixedly connected to the lower surface of the guide plate 26 and the rear surface of the door 25.

[0042] When the two spray heads 810 are used, the two cams 24 will press the guide plate 26 at the same time. The guide plate 26 will transport the water flow to the rear of the working box 3, so that the water flow is more evenly delivered to the bottom, preventing the coalbed methane dust removal effect from decreasing. When the equipment stops, the guide plate 26 can be reset by the spring 27.

[0043] In this embodiment, the anti-backflow mechanism 9 includes a baffle plate 901. A support block 902 is symmetrically slidably connected to the lower surface of the baffle plate 901 and inside the working housing 3. Multiple through-holes 903 are integrally formed on the upper surface of the baffle plate 901. T-shaped pipes 904 are fixedly connected to the upper part of each of the multiple air outlets 903. Sliding grooves 905 are symmetrically formed inside the multiple air outlets 903 and below the multiple T-shaped pipes 904. Sliding rods 906 are fixedly connected to the interior of each of the multiple sliding grooves 905. The interiors of the multiple air outlets 903... The outer walls of the two sliding rods 906 are slidably connected to sliding plates 907. The upper surfaces of the multiple sliding plates 907 are fixedly connected to insertion tubes 908. The multiple sliding plates 907 and the multiple insertion tubes 908 are connected. The inner right side of the multiple insertion tubes 908 is rotatably connected to air baffles 909 through a rotating shaft. The inner left side of the multiple insertion tubes 908 and above the multiple air baffles 909 are fixedly connected to limit blocks 910. The lower surface of the multiple air baffles 909 and the inner right side of the multiple insertion tubes 908 are fixedly connected to springs 911.

[0044] In use, the dust-removed coalbed methane is transported upward through multiple air outlets 903 inside the baffle plate 901. Air pressure causes the sliding plate 907 to slide upward along the sliding rod 906 inside the sliding groove 905. When the air pressure pushes the sliding plate 907 to the end of the sliding groove 905, the T-shaped pipe 904 pushes open the baffle plate 909 inside the insertion pipe 908, thus transporting the dust-removed coalbed methane upward. After mining is completed, the insertion pipe 908 is closed by the spring 911 and the limiting block 910 to prevent gas leakage and thus resource waste.

[0045] In this embodiment, a pressure gauge 28 is provided on the front surface of the gas storage tank 4, and the storage status inside the gas storage tank 4 can be observed through the pressure gauge 28.

[0046] In this embodiment, the front surface of the door 25 is integrally formed with transparent glass 29, which allows for timely observation of the internal condition of the working box 3.

[0047] The working principle of this device is as follows: During use, multiple support legs 2 are used to support and fix the equipment. When mining coalbed methane, the coalbed methane is transported to the interior of the working chamber 3 through the gas delivery pipe 702 and the gas inlet pipe 701. When a leak occurs in the gas delivery pipe 702 or the gas inlet pipe 701, the leaking gas pressure pushes the piston plate 704 upwards. The piston plate 704 then drives the pressing rod 705 to press the control button 707 upwards. Pressing the control button 707 activates the alarm 708 to alert the operator and prevent accidents caused by coalbed methane leakage. Afterwards, the water pump 10 circulates water, causing the two spray heads 810 to rotate repeatedly outside the water storage tank 801, thereby collecting purer gas. Clean coalbed methane, after dust removal, is transported upwards through multiple air outlets 903 inside the baffle plate 901. Air pressure pushes the sliding plate 907 upwards along the sliding rod 906 inside the sliding groove 905. When the air pressure pushes the sliding plate 907 to the end of the sliding groove 905, the T-shaped pipe 904 opens the baffle plate 909 inside the insertion pipe 908, thus transporting the dust-removed coalbed methane upwards. After mining is completed, the insertion pipe 908 is closed by the spring 911 and the limiting block 910 to prevent gas leakage and resource waste. The dust-removed coalbed methane is then transported and stored inside the gas storage tank 4 through the gas collecting pipe 6.

[0048] All electrical components mentioned in this article are real-world electrical components.

[0049] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention are also within the protection scope of the present invention.

Claims

1. A coalbed methane recovery device, comprising a base plate (1), characterized in that: The lower surface of the base plate (1) is fixedly connected to multiple support legs (2), the upper surface of the support legs (2) is fixedly connected to a working box (3), the left side of the working box (3) is fixedly connected to a gas storage tank (4), the lower surface of the gas storage tank (4) and the upper surface of the base plate (1) are fixedly connected to a support plate (5), the upper surface of the gas storage tank (4) and the upper surface of the working box (3) are jointly fixedly connected to a gas collecting pipe (6), the lower left side of the working box (3) and below the gas storage tank (4) are integrally formed with an anti-leakage mechanism (7), the rear surface of the working box (3) is fixedly connected to a dust removal mechanism (8), and the inside of the working box (3) and above the dust removal mechanism (8) is fixedly connected to an anti-backflow mechanism (9). A water pump (10) is fixedly connected to the lower surface of the working box (3). A water pipe (11) is fixedly connected to the top of the output shaft of the water pump (10). The end of the water pipe (11) away from the water pump (10) is connected to the ash removal mechanism (8). The ash removal mechanism (8) includes a water storage tank (801). The rear surface of the water storage tank (801) is fixedly connected to the inner rear surface of the working box (3). The inner front and rear surfaces of the water storage tank (801) are symmetrically connected to rotating rods (802) via rotating shafts. A rotating cylinder (803) is fixedly connected to the outer wall of the rotating rod (802) located on the right side inside the water storage tank (801). A plurality of actuating plates (804) are fixedly connected to the outer wall of the rotating cylinder (803). A transmission turntable (805) is fixedly connected to the rear of the outer walls of the two rotating rods (802). The outer walls of the two transmission turntables (805) are connected to a belt (806) for transmission. The outer walls of the two rotating rods (802) are connected to the front of the belt. A rotating disc (807) is fixedly connected to each of the two rotating discs (807). Multiple locking posts (808) are fixedly connected to the front surfaces of the two rotating rods (802). Water outlet pipes (809) are provided inside the water storage tank (801) and on the opposite sides of the two rotating rods (802). The front surfaces of the two water outlet pipes (809) extend to the front of the water storage tank (801) and are fixedly connected to spray heads (810). Transmission gears (811) are fixedly connected to the outer walls of the two water outlet pipes (809) and inside the water storage tank (801). Torsion springs (812) are fixedly connected between the outer walls of the two water outlet pipes (809) and between the two transmission gears (811) and the front surface of the water storage tank (801). Water is pumped into the water storage tank (801) by a pump (10). The water flow drives multiple actuating plates (804) to rotate on a rotating cylinder (803). The rotating cylinder (803), the transmission turntable (805), and the belt (806) drive two rotating rods (802) to rotate inside the water storage tank (801). The rotation of the two rotating rods (802) drives two rotating discs (807) to rotate. Multiple locking pins on the front of the two rotating discs (807) rotate through the pump (10). 808) Move the two transmission gears (811) on the outside of the two water outlet pipes (809) to rotate. The two transmission gears (811) drive the two water outlet pipes (809) to rotate, thereby driving the two spray heads (810) to rotate on the outside of the water storage tank (801). When the multiple locking pins (808) move away from the two transmission gears (811), the two torsion springs (812) set up reset the two spray heads (810), thereby realizing the repeated rotation of the spray heads (810) through water circulation.

2. The coalbed methane recovery equipment according to claim 1, characterized in that: The working box (3) is symmetrically fixedly connected to the lower part of the interior of a support block (12). The upper surfaces of the two support blocks (12) are slidably connected to a filter box (13). The filter box (13) is provided with multiple multi-faceted spheres (14). The upper and lower surfaces of the filter box (13) are integrally formed with multiple water seepage holes (15). The lower right side of the working box (3) is integrally formed with a drain outlet (16).

3. The coalbed methane recovery equipment according to claim 1, characterized in that: The leak prevention mechanism (7) includes an air inlet pipe (701), the right end of which extends into the interior of the working housing (3). The left end of the air inlet pipe (701) is threadedly connected to an air supply pipe (702). The outer walls of the air inlet pipe (701) and the outer walls of the air supply pipe (702) are fitted with a sealing box (703). The sealing box (703) is located inside the air inlet pipe (701) and above the air supply pipe (702). A piston plate (704) is slidably connected, and a pressing rod (705) is fixedly connected to the upper surface of the piston plate (704). The top end of the pressing rod (705) extends to the top of the sealing box (703). An L-shaped platform (706) is fixedly connected to the upper surface of the sealing box (703). A control button (707) is fixedly connected to the lower surface of the L-shaped platform (706). An alarm (708) is fixedly connected to the upper surface of the L-shaped platform (706).

4. The coalbed methane recovery equipment according to claim 3, characterized in that: A pressure relief cylinder (17) is integrally formed on the upper right side of the outer wall of the sealing box (703). A piston plate (18) is slidably connected inside the pressure relief cylinder (17). A spring (19) is fixedly connected between the right side of the piston plate (18) and the inner right side of the pressure relief cylinder (17). Multiple through-hole pressure relief holes (20) are integrally formed on the inner right side of the pressure relief cylinder (17). A gear disk (21) is rotatably connected to the center of the right side of the pressure relief cylinder (17) via a rotating shaft. Multiple through-hole pressure relief holes (22) are opened on the left side of the gear disk (21). An L-shaped rack plate (23) is fixedly connected to the right side of the pressing rod (705) and located outside the sealing box (703). The front surface of the L-shaped rack plate (23) is meshed with the outer wall of the gear disk (21).

5. The coalbed methane recovery equipment according to claim 1, characterized in that: Cams (24) are fixedly connected to the outer walls of the two water outlet pipes (809) and to the outside of the water storage tank (801). A door (25) is threadedly connected to the front surface of the working box (3). A guide plate (26) is rotatably connected to the rear surface of the door (25) via a rotating shaft. The guide plate (26) is located below the water storage tank (801). A spring (27) is fixedly connected to the lower surface of the guide plate (26) and the rear surface of the door (25).

6. The coalbed methane recovery equipment according to claim 1, characterized in that: The anti-backflow mechanism (9) includes a baffle plate (901). A support block (902) is symmetrically slidably connected to the lower surface of the baffle plate (901) and inside the working box (3). Multiple through-holes (903) are integrally formed on the upper surface of the baffle plate (901). T-shaped pipes (904) are fixedly connected above the interior of each of the multiple air outlets (903). Sliding grooves (905) are symmetrically opened inside the multiple air outlets (903) and below the multiple T-shaped pipes (904). Sliding rods (906) are fixedly connected inside the multiple sliding grooves (905). Two sliding rods (906) are fixedly connected inside the multiple air outlets (903). Each of the sliding rods (906) has a sliding plate (907) slidably connected to its outer side wall. Each of the sliding plates (907) has a plug tube (908) fixedly connected to its upper surface. Each of the sliding plates (907) and the plug tubes (908) are connected in communication. Each of the plug tubes (908) has an air baffle (909) rotatably connected to its inner right side via a rotating shaft. Each of the plug tubes (908) has a limit block (910) fixedly connected to its inner left side and above the air baffles (909). Each of the air baffles (909) has a spring (911) fixedly connected between its lower surface and its inner right side.

7. The coalbed methane recovery equipment according to claim 1, characterized in that: A pressure gauge (28) is provided on the front surface of the gas storage tank (4).

8. The coalbed methane recovery equipment according to claim 5, characterized in that: The front surface of the door (25) is integrally formed with transparent glass (29).

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