Automatic water and slag discharging system for coal mine gas extraction downward drilling

Abstract

The invention discloses a coal mine gas extraction downward drilling automatic water and slag discharging system, and relates to the technical field of coal mine gas extraction, the coal mine gas extraction downward drilling automatic water and slag discharging system comprises a grouping current collector and a flow dividing compressed air bag, the flow dividing compressed air bag is provided with a compressed air connector, an automatic control valve is installed on the compressed air connector, the compressed air connector is connected with an air compressor, and the automatic control valve is connected with the air compressor. A flow dividing branch pipe of the flow dividing compressed air bag is connected into the drill hole through a water blowing pipe, and the drill hole is communicated with the grouping flow collector through a flow collecting branch pipe. The defects in the prior art are overcome, automatic discharge of accumulated water and waste residues in the drill hole is achieved through the synergistic effect of the flow dividing compressed air bag, the water blowing pipe, the grouping flow collector, the automatic water drainer and other components and by means of compressed air generated by the air compressor and negative pressure of the extraction pipeline, the problems of accumulated water in the downward drill hole and residue discharge are effectively solved, and the production efficiency is improved. The gas extraction effect is improved, safe production of a mine is guaranteed, and the problems that manual drainage is not timely, unreliable, high in cost and the like are solved.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine gas extraction, and in particular to an automatic water and slag removal system for downward drilling of coal mine gas extraction. Background Art

[0002] The management of "one ventilation and three preventions" in coal mines is the top priority of coal mine safety management. The "standardization", "refinement", "maximization" and "automation" of gas extraction provide scientific means for gas extraction. "Drilling to the right place", "pipe to the bottom", "hole sealing" and "water release" provide powerful management means for the quality standardization of gas extraction.

[0003] The accumulation of water in downward boreholes has always been a problem in maximizing gas extraction. Artificial drainage has shortcomings such as untimely and unreliable drainage, safety management of personnel, and high investment in employee wages. According to the concepts of "automation to reduce manpower" and "rather maintain equipment than personnel", the key to improving gas extraction effects and achieving early extraction and compliance with standards is to realize automatic drainage by downward drilling.

[0004] Draining and slag removal from downward boreholes during gas extraction is a difficult problem in gas extraction, and the extraction system in mines is large and complex. During gas extraction, it is difficult to discharge the water accumulated in downward boreholes in a timely and thorough manner. The water accumulation problem seriously restricts the effect of gas extraction in mines and endangers mine safety production. Coal mines have successively introduced various methods for draining and slag removal from downward boreholes, but the results are not ideal, and basically none of them can achieve automatic drainage and water discharge; therefore, they can only rely on installing manual valves to blow water to solve the problem, which requires a lot of manpower and the need to stop the extraction drilling to drain water and slag, and does not achieve automatic drainage and water discharge from downward boreholes. Summary of the invention

[0005] In order to solve the problems mentioned in the above background technology, the present invention provides an automatic water and slag removal system for downward drilling in coal mine gas extraction.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An automatic drainage and slag removal system for downward drilling of coal mine gas extraction, comprising a grouping collector and a shunt compressed air bag, the shunt compressed air bag is provided with a compressed air joint, and an automatic control valve is installed on the compressed air joint, the compressed air joint is connected to an air compressor, the shunt branch pipe of the shunt compressed air bag is connected to the borehole through a water blowing pipe, and the borehole is connected to the grouping collector through a collecting branch pipe, and a solid-liquid separator is provided between the collecting branch pipe and the grouping collector, one end of the grouping collector is connected to the extraction pipeline, and the other end of the grouping collector is connected to an automatic drainer;

[0008] The solid-liquid separator comprises a solid-liquid separator housing, a drain port is installed near the top of one side of the solid-liquid separator housing, a filter is installed in the drain port, a sewage inlet pipe and an air-water inlet pipe are installed near the bottom of two sides of the solid-liquid separator housing, a scum collector is installed near the top of the solid-liquid separator housing, and an automatic opening and closing mechanism is installed at the bottom of the scum collector;

[0009] A collector driving mechanism is provided on one side of the solid-liquid separator shell, and the collector driving mechanism is used to transfer the scum collector out of the solid-liquid separator shell, so as to achieve the purpose of separating sludge from water.

[0010] Preferably, the interior of the solid-liquid separator housing is provided with a first annular distributor and a second annular distributor, respectively, and the outer sides of the first annular distributor and the second annular distributor are rotatably mounted with a first sealing ring plate and a second sealing ring plate, respectively, the first sealing ring plate and the second sealing ring plate are fixed and connected to the air water inlet pipe and the sewage inlet pipe, respectively, and a plurality of distribution pipes are fixed on the side of the first annular distributor and the second annular distributor close to each other.

[0011] Preferably, a plurality of drainage holes are provided on the outer side of the distribution pipe, stirring blades are fixed around the distribution pipe, and the positions of the distribution pipes on the first annular distributor and the second annular distributor are staggered.

[0012] Preferably, a first rotating motor is fixed on the outer wall of the bottom end of the solid-liquid separator housing, the output shaft of the first rotating motor extends to the interior of the solid-liquid separator housing and is fixed with a vertical rotating shaft, and the outside of the vertical rotating shaft is fixed to the inner side of the first annular distributor through a first bracket.

[0013] Preferably, a vertical sleeve is rotatably mounted inside the solid-liquid separator housing, and the outside of the vertical sleeve is fixed to the inner side of the second annular distributor via a second bracket.

[0014] Preferably, a first gear is fixedly installed on the top end of the vertical rotating shaft, a first gear ring is fixed on the bottom end of the second annular distributor, a support rod is fixed on the inner wall of the solid-liquid separator shell, the support rod movably passes through the vertical sleeve, and a second gear is rotatably installed on the bottom end of the support rod, the first gear and the second gear are both located inside the first gear ring, and the second gear is located between the first gear and the first gear ring, and the three are meshed in sequence.

[0015] Preferably, the collector driving mechanism is fixed to the outside of the solid-liquid separator casing through a third bracket, a vertical hydraulic cylinder is fixed to the top of the third bracket, a lifting support seat is fixed to the output shaft of the vertical hydraulic cylinder, a support column is provided at the top of the lifting support seat, a rotating support seat is rotatably installed on the outside of the support column, a rotating horizontal axis is installed on both sides of the top of the rotating support seat, a horizontal connecting rod is fixed to one end of the rotating horizontal axis, a vertical connecting rod is fixed to the end of the horizontal connecting rod away from the rotating horizontal axis, and the vertical connecting rod is fixed to the slag collector.

[0016] Preferably, a second rotating motor is fixed to the top of the lifting support seat, a third gear is fixed to the output shaft of the second rotating motor, a second gear ring is fixed to the bottom end of the rotating support seat, and the third gear is meshed with the second gear ring.

[0017] Preferably, an arc-shaped rack is fixed to the top of the support column away from the solid-liquid separator housing, a fourth gear is fixed to the outside of the rotating horizontal axis, and the arc-shaped racks are meshed with each other accordingly.

[0018] Preferably, the automatic opening and closing mechanism includes a plurality of fan-shaped baffles, a plurality of fan-shaped through holes are provided at the bottom end of the scum collector, the fan-shaped baffles are rotatably installed in the fan-shaped through holes, a fifth gear is fixed on the supporting shaft of the fan-shaped baffles, a lifting vertical rod is movably installed at the bottom end of the scum collector, a plurality of vertical racks are fixed at one end of the lifting vertical rod, the plurality of vertical racks are meshed with the plurality of fifth gears in a one-to-one correspondence, a return spring is fixedly installed on the outside of the lifting vertical rod, and an extrusion rod is fixedly installed on the inner wall of the solid-liquid separator housing directly below the lifting vertical rod.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. Efficient and automatic drainage and slag removal: Through the coordinated action of the split-flow pressure air bag, water blowing pipe, group collector and automatic drainer, the compressed air generated by the air compressor and the negative pressure of the extraction pipeline are used to realize the automatic discharge of borehole water and waste slag, effectively solving the problems of water accumulation and slag discharge in the downward borehole, improving the gas extraction effect, ensuring the safe production of the mine, and avoiding the problems of untimely, unreliable and high cost of artificial drainage.

[0021] 2. Effective solid-liquid separation: The solid-liquid separator uses the micro-nano bubbles generated by the gas-containing water to make small particles of solid suspended matter float up, and separates the scum from the water through the scum collector and the automatic opening and closing mechanism, effectively preventing the interference of solid impurities with the subsequent drainage and gas extraction process, ensuring the stable operation of the system. At the same time, the filter filters the lower layer of clear liquid and discharges it, further improving the drainage quality.

[0022] 3. Optimize mixing and separation effects: The first annular distributor and the second annular distributor in the solid-liquid separator and their distribution pipes, stirring blades and other structures, driven by the first rotating motor, can make the dissolved air water and sewage mix more evenly, increase the mixing rate of small particle sludge and nanobubbles, and at the same time stir the liquid to break up the sludge, promote its combination with bubbles and floatation, and improve the solid-liquid separation efficiency.

[0023] 4. Convenient scum collection and treatment: The collector drive mechanism realizes the lifting and repositioning of the scum collector through vertical hydraulic cylinders, rotating support seats and other components, which facilitates the removal of accumulated scum for centralized collection and discharge, and can automatically drive the scum collector to flip and pour out the sludge during the repositioning process. The operation is convenient and efficient, reducing manual intervention and improving the overall processing efficiency.

[0024] 5. Advantages of automatic opening and closing mechanism: The automatic opening and closing mechanism at the bottom of the scum collector can automatically switch states according to its position in the solid-liquid separator without manual control. It is closed during normal operation to prevent scum leakage, and automatically opens when collecting scum, ensuring the efficiency and reliability of the solid-liquid separation process and further improving the automation of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is an overall schematic diagram of the present invention;

[0027] Figure 2 A cross-sectional view of a solid-liquid separator housing according to the present invention from a first viewing angle;

[0028] Figure 3 A cross-sectional view of the solid-liquid separator housing of the present invention from a second viewing angle;

[0029] Figure 4 A cross-sectional view of the first annular distributor and the second annular distributor of the present invention from a first viewing angle;

[0030] Figure 5 A cross-sectional view of the first annular distributor and the second annular distributor of the present invention from a second viewing angle;

[0031] Figure 6 A cross-sectional view of the first annular distributor and the second annular distributor of the present invention from a third viewing angle;

[0032] Figure 7 for Figure 6 A zoomed-in detail of position A in the middle;

[0033] Figure 8 It is a schematic diagram of the collector driving mechanism structure of the present invention;

[0034] Fig. 9 for Figure 8 Enlarged detail of position B in the middle;

[0035] Fig.10 It is a schematic diagram of the closed state of the automatic opening and closing mechanism on the scum collector of the present invention;

[0036] In the figure: 101, shunt compressed air bag; 102, compressed air joint; 103, automatic control valve; 104, shunt branch pipe; 105, water blowing pipe; 106, drilling hole; 107, grouping collector; 108, collecting branch pipe; 109, automatic drainer; 110, extraction pipeline; 2, solid-liquid separator shell; 201, air-water inlet pipe; 2011, first sealing ring plate; 202, sewage inlet pipe; 2021, second sealing ring plate; 203, drain port; 204, third bracket; 205, extrusion rod; 206, first rotating motor; 3, scum collector; 301, fan-shaped through hole; 302, fan-shaped baffle; 303, fifth gear; 304, lifting vertical rod; 305, vertical rack; 3 06. reset spring; 4. vertical hydraulic cylinder; 401. lifting support seat; 402. support column; 403. rotating support seat; 404. second gear ring; 405. second rotating motor; 406. third gear; 407. arc rack; 5. rotating horizontal axis; 501. fourth gear; 502. horizontal connecting rod; 503. vertical connecting rod; 601. vertical rotating shaft; 6011. first bracket; 6012. first gear; 602. first annular distributor; 603. distribution pipe; 6031. drainage hole; 6032. stirring blade; 604. vertical sleeve; 6041. second bracket; 6042. first gear ring; 605. second annular distributor; 7. support rod; 701. second gear. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0038] Example 1

[0039] Reference Figure 1-10, an automatic drainage and slag removal system for downward drilling of coal mine gas extraction, comprising a grouping collector 107 and a shunt compressed air bag 101, the shunt compressed air bag 101 is provided with a compressed air joint 102, and the compressed air joint 102 is installed with an automatic control valve 103, the compressed air joint 102 is connected to an air compressor, a shunt branch pipe 104 of the shunt compressed air bag 101 is connected to a borehole 106 through a water blowing pipe 105, and the borehole 106 is connected to the grouping collector 107 through a collecting branch pipe 108, and a solid-liquid separator is arranged between the collecting branch pipe 108 and the grouping collector 107, one end of the grouping collector 107 is connected to a drainage pipeline 110, and the other end of the grouping collector 107 is connected with an automatic drainer 109;

[0040] Compressed air is generated by an air compressor, and then diverted by a diverter compressed air bag 101, and then blown into a borehole 106 through a diverter branch pipe 104 and a water blowing pipe 105. At the same time, a suction pipe 110 is connected to a negative pressure device to form a negative pressure. Under the dual effects, the accumulated water in the borehole 106 is sent to a grouping collector 107 and discharged by an automatic drainer 109, thus realizing an automatic blowing and drainage function.

[0041] The blown-out sewage contains small particles of sludge, and after passing through the solid-liquid separator, the solids are separated, thus achieving the purpose of solid-liquid separation.

[0042] The solid-liquid separator comprises a solid-liquid separator housing 2, a drain port 203 is installed near the top of one side of the solid-liquid separator housing 2, a filter is installed in the drain port 203, a sewage inlet pipe 202 and an air-water inlet pipe 201 are installed near the bottom of both sides of the solid-liquid separator housing 2, a scum collector 3 is installed near the top of the solid-liquid separator housing 2, and an automatic opening and closing mechanism is installed at the bottom of the scum collector 3;

[0043] The sewage enters the solid-liquid separator housing 2 through the sewage inlet pipe 202, and the solution mixed with compressed gas is introduced into the solid-liquid separator housing 2 through the air-water inlet pipe 201, generating a large number of micro-nano bubbles, which adhere to the small particles of solid suspended matter and float to the water surface. The automatic opening and closing mechanism at the bottom of the scum collector 3 is in the open state in this state, and the suspended matter can float to the water surface through it. The lower clear liquid is filtered by the filter in the drain port 203 and then discharged. When more scum is accumulated in the upper layer;

[0044] A collector driving mechanism is provided on one side of the solid-liquid separator housing 2, and the collector driving mechanism is used to transfer the scum collector 3 out of the solid-liquid separator housing 2. During the transfer, the automatic opening and closing mechanism is closed, and the scum is taken out by the scum collector 3, thereby achieving the purpose of separating the scum from the water, and the scum is collected and discharged in a centralized manner.

[0045] Example 2

[0046] Reference Figure 1-10 The difference between this embodiment and embodiment 1 is that a first annular distributor 602 and a second annular distributor 605 are respectively provided inside the solid-liquid separator housing 2, and a first sealing ring plate 2011 and a second sealing ring plate 2021 are rotatably installed on the outer sides of the first annular distributor 602 and the second annular distributor 605, respectively. The first sealing ring plate 2011 and the second sealing ring plate 2021 are respectively fixed and connected to the air-water inlet pipe 201 and the sewage inlet pipe 202, and a plurality of distribution pipes 603 are fixed on the side where the first annular distributor 602 and the second annular distributor 605 are close to each other;

[0047] The dissolved air water and sewage introduced by the air-containing water inlet pipe 201 and the sewage inlet pipe 202 enter the first annular distributor 602 and the second annular distributor 605 respectively, and then disperse and flow out through multiple distribution pipes 603, so that they can be mixed more evenly with each other, thereby improving the mixing rate between small particle sludge and nanobubbles and accelerating the floating of scum.

[0048] Among them, a plurality of drainage holes 6031 are opened on the outside of the distribution pipe 603, and stirring blades 6032 are fixed around the distribution pipe 603. The positions of the distribution pipes 603 on the first annular distributor 602 and the second annular distributor 605 are staggered with each other. A first rotating motor 206 is fixed on the outer wall of the bottom end of the solid-liquid separator housing 2. The output shaft of the first rotating motor 206 extends to the inside of the solid-liquid separator housing 2 and is fixed with a vertical rotating shaft 601. The outside of the vertical rotating shaft 601 is fixed to the inner side of the first annular distributor 602 through a first bracket 6011. A vertical sleeve 604 is rotatably installed inside the solid-liquid separator housing 2. The outside of the vertical sleeve 604 is fixed to the inner side of the second annular distributor 605 through the second bracket 6041, the top of the vertical shaft 601 is fixedly mounted with a first gear 6012, the bottom of the second annular distributor 605 is fixed with a first gear ring 6042, the inner wall of the solid-liquid separator housing 2 is fixed with a support rod 7, the support rod 7 movably penetrates the vertical sleeve 604, and the bottom of the support rod 7 is rotatably mounted with a second gear 701, the first gear 6012 and the second gear 701 are both located inside the first gear ring 6042, and the second gear 701 is located between the first gear 6012 and the first gear ring 6042, and the three are meshed in sequence;

[0049] When the vertical rotating shaft 601 is driven to rotate by the first rotating motor 206, the vertical rotating shaft 601 will first drive the first annular distributor 602 to rotate, and can drive the second annular distributor 605 to rotate in the opposite direction through the meshing transmission between the second gear 701, the first gear 6012 and the first gear ring 6042, which can further improve the mixing and distribution effect, and can also drive the stirring blades 6032 to stir the liquid, further break up the sludge, and promote the small particles of sludge to combine with nanobubbles and float up.

[0050] Example 3

[0051] Reference Figure 1-10 , the difference between this embodiment and embodiment 1 is that the collector driving mechanism is fixed to the outside of the solid-liquid separator housing 2 through the third bracket 204, a vertical hydraulic cylinder 4 is fixed to the top of the third bracket 204, a lifting support seat 401 is fixed to the output shaft of the vertical hydraulic cylinder 4, a support column 402 is provided at the top of the lifting support seat 401, a rotating support seat 403 is rotatably installed on the outside of the support column 402, a rotating horizontal axis 5 is installed on both sides of the top of the rotating support seat 403, a horizontal connecting rod 502 is fixed to one end of the rotating horizontal axis 5, a vertical connecting rod 503 is fixed to the end of the horizontal connecting rod 502 away from the rotating horizontal axis 5, and the vertical connecting rod 503 is fixed to the scum collector 3;

[0052] The vertical hydraulic cylinder 4 can drive the lifting support seat 401 and the rotating support seat 403 to lift and move as a whole, thereby driving the scum collector 3 to lift and move, thereby driving the scum collector 3 to move out of the solid-liquid separator housing. A second rotating motor 405 is fixed to the top of the lifting support seat 401, and a third gear 406 is fixed to the output shaft of the second rotating motor 405. A second gear ring 404 is fixed to the bottom end of the rotating support seat 403, and the third gear 406 is meshed with the second gear ring 404. The second rotating motor 405 can drive the third gear 406 to rotate, and then the third gear 406 is meshed with the second gear ring 404 to drive the two scum collectors 3 to exchange positions, thereby moving the scum collector 3 containing sludge inside out, and replacing a new scum collector 3 to enter the solid-liquid separator housing 2, so as to achieve the purpose of convenient sludge separation.

[0053] Among them, an arc-shaped rack 407 is fixed to the top of the support column 402 away from the side of the solid-liquid separator housing 2, and a fourth gear 501 is fixed to the outside of the rotating horizontal axis 5. The arc-shaped rack 407 is meshed with the arc-shaped rack 407. When the rotating support seat 403 rotates, the fourth gear 501 will pass through the arc-shaped rack 407, and in the process of passing through the arc-shaped rack 407, the rotating horizontal axis 5 is driven to rotate 380 degrees, thereby automatically driving the scum collector 3 to flip over and pour out the sludge.

[0054] Example 4

[0055] Reference Figure 1-10, the difference between this embodiment and embodiment 1 is that the automatic opening and closing mechanism includes a plurality of fan-shaped baffles 302, a plurality of fan-shaped through holes 301 are provided at the bottom end of the scum collector 3, the fan-shaped baffles 302 are rotatably installed in the fan-shaped through holes 301, a fifth gear 303 is fixed on the supporting shaft of the fan-shaped baffles 302, a lifting vertical rod 304 is movably installed at the bottom end of the scum collector 3, a plurality of vertical racks 305 are fixed at one end of the lifting vertical rod 304, and the plurality of vertical racks 305 are meshed with the plurality of fifth gears 303 in a one-to-one correspondence, a return spring 306 is fixedly installed on the outside of the lifting vertical rod 304, and an extrusion rod 205 is fixedly installed on the inner wall of the solid-liquid separator housing 2 directly below the lifting vertical rod 304;

[0056] When the reset spring 306 is in a natural state, the fan-shaped baffle 302 is in a horizontal state and blocks the fan-shaped through hole 301. At this time, the automatic opening and closing mechanism is in a closed state. Only when the scum collector 3 moves downward in the process of the solid-liquid separator housing 2, the lifting vertical rod 304 contacts the extrusion rod 205, the lifting vertical rod 304 is pushed upward, the reset spring 306 is compressed, and the vertical rack 305 follows the upward movement and drives the fifth gear 303 and the fan-shaped baffle 302 to rotate through engagement. When the scum collector 3 moves downward into place, the fan-shaped baffle 302 just rotates to a vertical state. At this time, the automatic opening and closing mechanism can be switched to an open state without manual control, which is more efficient and convenient.

[0057] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0058] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0060] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A coal mine gas extraction downward drilling automatic water drainage and slag removal system, comprising a grouping collector (107) and a split flow pressure air bag (101), characterized in that: The split compressed air bag (101) is provided with a compressed air joint (102), and an automatic control valve (103) is installed on the compressed air joint (102), the compressed air joint (102) is connected to the air compressor, the split branch pipe (104) of the split compressed air bag (101) is connected to the borehole (106) through a water blowing pipe (105), and the borehole (106) and the grouping collector (107) are connected through a collecting branch pipe (108), and a solid-liquid separator is provided between the collecting branch pipe (108), one end of the grouping collector (107) is connected to the extraction pipeline (110), and the other end of the grouping collector (107) is connected to an automatic drainer (109); The solid-liquid separator comprises a solid-liquid separator housing (2), a drain port (203) is installed on one side of the solid-liquid separator housing (2) near the top, a filter is installed in the drain port (203), sewage inlet pipes (202) and air-containing water inlet pipes (201) are installed on both sides of the solid-liquid separator housing (2) near the bottom, a scum collector (3) is installed inside the solid-liquid separator housing (2) near the top, and an automatic opening and closing mechanism is installed at the bottom of the scum collector (3); A collector driving mechanism is provided on one side of the solid-liquid separator housing (2), and the collector driving mechanism is used to transfer the scum collector (3) out of the solid-liquid separator housing (2), thereby achieving the purpose of separating sludge from water.

2. The automatic drainage and slag removal system for downward drilling of coal mine gas extraction according to claim 1 is characterized by: A first annular distributor (602) and a second annular distributor (605) are respectively provided inside the solid-liquid separator housing (2). A first sealing ring plate (2011) and a second sealing ring plate (2021) are rotatably mounted on the outer sides of the first annular distributor (602) and the second annular distributor (605). The first sealing ring plate (2011) and the second sealing ring plate (2021) are respectively fixed to and connected with the air-water inlet pipe (201) and the sewage inlet pipe (202). A plurality of distribution pipes (603) are fixed to the sides of the first annular distributor (602) and the second annular distributor (605) that are close to each other.

3. The automatic drainage and slag removal system for downward drilling of coal mine gas extraction according to claim 2 is characterized by: The outer side of the distribution pipe (603) is provided with a plurality of drainage holes (6031), and stirring blades (6032) are fixed around the distribution pipe (603). The positions of the distribution pipes (603) on the first annular distributor (602) and the second annular distributor (605) are staggered.

4. The automatic drainage and slag removal system for downward drilling of coal mine gas extraction according to claim 2 is characterized by: A first rotating motor (206) is fixed on the outer wall of the bottom end of the solid-liquid separator housing (2), and the output shaft of the first rotating motor (206) extends to the interior of the solid-liquid separator housing (2) and is fixed with a vertical rotating shaft (601), and the exterior of the vertical rotating shaft (601) is fixed to the inner side of the first annular distributor (602) via a first bracket (6011).

5. The automatic drainage and slag removal system for downward drilling of coal mine gas extraction according to claim 4 is characterized by: A vertical sleeve (604) is rotatably mounted inside the solid-liquid separator housing (2), and the outside of the vertical sleeve (604) is fixed to the inner side of the second annular distributor (605) via a second bracket (6041).

6. The automatic water and slag removal system for downward drilling of coal mine gas extraction according to claim 5 is characterized by: A first gear (6012) is fixedly installed on the top end of the vertical rotating shaft (601), a first gear ring (6042) is fixed on the bottom end of the second annular distributor (605), a support rod (7) is fixed on the inner wall of the solid-liquid separator housing (2), the support rod (7) movably passes through the vertical sleeve (604), and a second gear (701) is rotatably installed on the bottom end of the support rod (7), the first gear (6012) and the second gear (701) are both located inside the first gear ring (6042), and the second gear (701) is located between the first gear (6012) and the first gear ring (6042), and the three are meshed in sequence.

7. The automatic water and slag removal system for downward drilling of coal mine gas extraction according to claim 1 is characterized by: The collector driving mechanism is fixed to the outside of the solid-liquid separator housing (2) via a third bracket (204); a vertical hydraulic cylinder (4) is fixed to the top of the third bracket (204); a lifting support seat (401) is fixed to the output shaft of the vertical hydraulic cylinder (4); a support column (402) is provided at the top of the lifting support seat (401); a rotating support seat (403) is rotatably mounted on the outside of the support column (402); a rotating horizontal axis (5) is mounted on both sides of the top of the rotating support seat (403); a horizontal connecting rod (502) is fixed to one end of the rotating horizontal axis (5); a vertical connecting rod (503) is fixed to the end of the horizontal connecting rod (502) away from the rotating horizontal axis (5); and the vertical connecting rod (503) is fixed to the slag collector (3).

8. The automatic water and slag removal system for downward drilling of coal mine gas extraction according to claim 7 is characterized by: A second rotating motor (405) is fixed to the top of the lifting support seat (401), a third gear (406) is fixed to the output shaft of the second rotating motor (405), a second gear ring (404) is fixed to the bottom of the rotating support seat (403), and the third gear (406) is meshed with the second gear ring (404).

9. The automatic water and slag removal system for downward drilling of coal mine gas extraction according to claim 8 is characterized by: An arc-shaped rack (407) is fixed to the top of the support column (402) away from the solid-liquid separator housing (2), and a fourth gear (501) is fixed to the outside of the rotating horizontal axis (5), and the arc-shaped rack (407) is meshed with the arc-shaped rack (407) accordingly.

10. The automatic water and slag removal system for downward drilling of coal mine gas extraction according to claim 1, characterized in that: The automatic opening and closing mechanism comprises a plurality of fan-shaped baffles (302), a plurality of fan-shaped through holes (301) are provided at the bottom end of the scum collector (3), the fan-shaped baffles (302) are rotatably mounted in the fan-shaped through holes (301), a fifth gear (303) is fixed on the supporting shaft of the fan-shaped baffles (302), a lifting vertical rod (304) is movably mounted at the bottom end of the scum collector (3), a plurality of vertical racks (305) are fixed at one end of the lifting vertical rod (304), the plurality of vertical racks (305) are meshed with the plurality of fifth gears (303) in a one-to-one correspondence, a return spring (306) is fixedly mounted on the outside of the lifting vertical rod (304), and a squeezing rod (205) is fixedly mounted on the inner wall of the solid-liquid separator housing (2) directly below the lifting vertical rod (304).

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