Totally enclosed coal, water and gas integrated blowout prevention collection and separation device

Abstract

The fully-closed coal, water and gas integrated blowout prevention collecting and separating device comprises a caterpillar truck and a chassis, the chassis is provided with a coal, water and gas collecting mechanism, a coal residue discharging mechanism, a coal and water separating mechanism, a general control mechanism and a gas drainage pipe; the coal, water and gas collecting mechanism comprises a mixed collecting box, the mixed collecting box comprises a left box chamber and a right box chamber, the left box chamber is provided with a coal, water and gas inlet pipe at one side, and the coal, water and gas inlet pipe is connected with a drill rod at the top end; the coal residue discharging mechanism comprises an auger conveyor, the bottom end of the auger conveyor is obliquely arranged downwards on the bottom of the right box chamber, the bottom inlet of the auger conveyor is sealingly connected with the bottom outlet of the right box chamber, and the auger conveyor is further provided with a hydraulic sealing assembly; the coal and water separating mechanism comprises a water pump and a coal and water centrifugal machine, and the water pump is communicated with the inner cavity of the right box chamber; and the gas drainage pipe is arranged on the top of the mixed collecting box. The device can cope with various coal, water and gas blowout situations in the well, has high blowout prevention collecting and processing capacity, and has good use effect.

Description

Technical Field

[0001] This invention relates to the field of coal mine gas extraction technology, specifically a fully enclosed integrated anti-blowing collection and separation device for coal, water, and gas. Background Technology

[0002] Mine gas control in underground coal mines is a key safety project in coal mine construction. Coal seams in the Central Plains region of my country are characterized by softness and low permeability due to geological structure, which poses challenges to gas extraction. Taking the Central Plains region as an example, current underground coal seam gas extraction often combines hydraulic perforation and cavity creation methods to increase coal seam permeability and improve gas extraction efficiency. Hydraulic perforation and cavity creation flush out coal slag, water, and gas from the gap between the extraction drill rod and the borehole. The higher the hydraulic perforation pressure, the faster the coal, water, and gas surge out, placing enormous pressure on the collection and control work at the extraction face. If the rapidly surging coal, water, and gas are not treated promptly and effectively, it will lead to gas leakage, creating a significant safety hazard.

[0003] Currently, the main solution to the above problems is to install a blowout preventer and collector at the orifice of the extraction working face, combined with a coal-water separation device, to ultimately separate and collect the gushing coal, water, and gas. Existing orifice blowout preventer and collector devices come in various structures, generally sharing the following characteristics: they are small, independent, and single-unit in structure, all requiring assembly and combination with the drill pipe and other equipment to achieve the comprehensive collection of coal, water, and gas. Numerous examples of such blowout preventers exist, such as CN206554836U, CN214007099U, and CN214886933U. The advantages of these existing devices are also their disadvantages: firstly, their small and independent structure limits their blowout prevention capacity, making them unable to cope with the rapid and continuous ejection of coal, water, and gas under sudden high pressure; secondly, the independence of their structure places higher demands on their coordination and connection with other equipment. If any assembly or connection becomes loose, resulting in a sealing problem, it can lead to serious consequences.

[0004] Therefore, it is necessary to design a complete equipment solution for underground gas blowout prevention, coal-water gas collection and separation. Summary of the Invention

[0005] To address the aforementioned problems, the purpose of this invention is to propose a fully enclosed integrated coal, water, and gas blowout prevention, collection, and separation device. This device integrates a complete set of functions for blowout prevention at the gas extraction working face and for the collection and separation of coal, water, and gas mixtures. It is a fully functional, specialized device for the collection of coal, water, and gas blowouts, capable of handling various sudden coal, water, and gas ejections underground. It has a powerful blowout prevention and collection capacity and excellent performance.

[0006] Therefore, the present invention specifically proposes the following technical solutions:

[0007] A fully enclosed integrated coal, water, and gas blowout prevention, collection, and separation device includes a tracked vehicle and a chassis mounted on the tracked vehicle. The chassis is equipped with a coal-water-gas collection mechanism, a coal slag discharge mechanism, a coal-water separation mechanism, a main control mechanism, and a gas extraction pipe.

[0008] The coal-water-gas collection mechanism includes a mixing collection box for collecting coal water and gas. The inner cavity of the mixing collection box is divided into a left chamber and a right chamber by a partition. A coal-water-gas inlet pipe is provided on one side of the left chamber. The top end of the coal-water-gas inlet pipe is connected to a drill rod for coal seam drilling through a coal-water-gas collection assembly.

[0009] The slag discharge mechanism includes an auger conveyor, the bottom of which is inclined downwards and located at the bottom of the right chamber. The bottom inlet of the auger conveyor is sealed to the bottom outlet of the right chamber. The auger conveyor is also equipped with a hydraulic sealing assembly for sealing the bottom outlet of the right chamber.

[0010] The coal-water separation mechanism includes a water pump and a coal-water centrifuge connected to the water pump. The water pump is connected to the inner cavity of the right chamber through a water pumping pipe.

[0011] The gas extraction pipe is located at the top of the mixing collection tank.

[0012] As an optimized version of the above scheme, the tops of the inner cavities of the left and right chambers are interconnected, the right chamber has an inclined bottom, the bottom outlet of the right chamber is a slag discharge port, and the top of the auger conveyor is inclined and close to the bottom of the right chamber.

[0013] As a further optimization of the above scheme, the bottom end of the coal-water-gas inlet pipe is inclined downwards and passes through the left chamber and the partition in sequence before communicating with the inner cavity of the right chamber.

[0014] As an optimized version of the above solution, the coal-water-gas collection assembly includes a casing, a guide sleeve disposed at the tail end of the casing, and a sealing sleeve disposed on the casing for sealing the borehole opening; wherein, the casing is sleeved on the drill rod and forms a coal-water-gas gap channel for coal-water-gas discharge between the casing and the drill rod, and the top end of the casing is inserted into the borehole, and the bottom end extends out of the borehole.

[0015] The guide sleeve is integrally connected to the tail end of the casing, and the bottom end of the guide sleeve is integrally provided with a sealing ring for sealing connection with the drill rod. The circumferential wall of the guide sleeve is provided with a coal-water-gas discharge pipe for connecting with the coal-water-gas inlet pipe.

[0016] As a further optimization of the above solution, the sealing sleeve includes an integrally connected rubber sleeve and a threaded sleeve. The threaded sleeve located on the lower side is threadedly connected to the sleeve. The top of the rubber sleeve is inserted into the drill hole so that the rubber sleeve is squeezed by rotating the threaded sleeve, thereby achieving the sealing of the drill hole opening by the rubber sleeve.

[0017] As an optimized solution to the above scheme, the threaded sleeve is provided with a rotating handle.

[0018] As an optimized solution to the above scheme, the hydraulic sealing assembly includes a hydraulic cylinder and a sealing plate disposed at the end of the extension rod of the hydraulic cylinder. The hydraulic cylinder is disposed parallel to the upper side of the auger conveyor, and the front end of the hydraulic cylinder is sealed through the side wall of the right chamber. The sealing plate is located in the inner cavity of the right chamber and is in close contact with the bottom wall of the right chamber, so that the sealing plate can be driven by the hydraulic cylinder to slide on the bottom wall of the right chamber to achieve sealing of the bottom outlet of the right chamber.

[0019] As an optimized solution to the above scheme, a pressure sensor for monitoring the gas pressure in the mixing collection tank is also installed in the right chamber. The pressure sensor is connected to the main control mechanism so that when the gas pressure in the mixing collection tank reaches a preset value, the main control mechanism operates the hydraulic cylinder to drive the sealing plate to seal the bottom outlet of the right chamber; and when the gas pressure is less than the preset value, the sealing plate is reset.

[0020] As a further optimization of the above solution, the water pump is a diaphragm pump, which is located at the bottom of the inner cavity of the left chamber. The water outlet pipe of the water pump passes through the right chamber and is connected to the coal-water centrifuge located on one side of the mixing and collecting tank.

[0021] As an optimized version of the above scheme, the height of the left chamber is greater than the height of the right chamber, and multiple gas drainage pipes are provided. One end of each gas drainage pipe is connected to the top of the left chamber, and the other end of each gas drainage pipe is connected to the negative pressure gas drainage main pipe in the coal mine.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] First, the structure of the coal-water-gas collection component in the device described in this invention differs from any existing orifice blowout preventer. It employs a combination of a casing and a sealing sleeve. Firstly, the end of the casing can be directly inserted deep into the borehole, allowing the gushing coal-water-gas to be kept as far away from the orifice as possible, reducing the possibility of ejection—a feature not found in existing orifice blowout preventers. Secondly, the sealing sleeve seals the orifice; the combination of the threaded sleeve and the rubber sleeve has a "rotation tightening" function, ensuring that the rubber sleeve essentially completely seals the orifice—another feature not found in existing orifice blowout preventers. Thirdly, the combination of the casing and the drill rod also... A significant advantage is the appropriately wide and elongated gap in the coal-water-gas gap channel between the casing and the drill pipe. This gap width was specifically designed for the characteristics of coal-water-gas, ensuring that no congestion occurs during the outflow process. Furthermore, the elongated channel increases the flow time of the coal-water-gas within the channel, thereby ensuring the stability of the outflow and facilitating its collection. Especially in the face of sudden surges under high pressure, the outflow velocity of the coal-water-gas becomes stable and balanced after passing through the gap channel, reducing the pressure on the collection equipment. This is a major feature that distinguishes it from existing equipment.

[0024] Secondly, the coal-water separation mechanism of this invention is also exceptionally well-functioning, mainly in the following ways: First, coal, water, and gas are concentrated and fed into the right chamber. The gas located within the right chamber is immediately extracted under the negative pressure of the gas extraction pipe, achieving separation of gas and coal-water. Second, the bottom of the right chamber adopts an inclined structural design, allowing coal-water and coal slag to fall directly into the auger conveyor. Under gravity, the blocky structure is spirally conveyed out by the auger conveyor. The coal-water that cannot be conveyed by the auger is pumped out from the left chamber and concentrated in a coal-water centrifuge for further separation. The separated water can then be further processed. The gas is collected and reused in the extraction and drilling process, ensuring a smooth and efficient workflow. Thirdly, to address sudden coal-water-gas outbursts, if the outflow is too rapid and the pressure in the right chamber exceeds the preset value, the hydraulic cylinder will be triggered to seal the slag discharge port, preventing excess gas from escaping from the bottom slag discharge port. At this time, the negative pressure of the gas extraction pipe can be increased to fully absorb the gas in the collection box. Once the pressure drops to a safe level, the hydraulic cylinder will be triggered again to open the slag discharge port, returning to the normal coal-water separation process. This process ensures that no gas leakage occurs, making it very safe.

[0025] Third, the entire device is transported by tracked vehicles, making it flexible and convenient. Like drilling rigs, it is suitable for construction in various environments underground in coal mines. As a complete system, this device integrates the existing decentralized equipment operation methods of orifice blowout prevention collection and coal-water separation into a unified dedicated system equipment operation. Compared with existing equipment, it is safer, more efficient, and more convenient, and can improve construction efficiency in all aspects, making it suitable for widespread application. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the application state structure of the present invention;

[0027] Figure 2 A schematic diagram of the structure in the sealed state of the slag discharge port;

[0028] Figure 3 This is a three-dimensional structural diagram of the present invention;

[0029] Figure 4 A schematic diagram of the coal-water-gas collection assembly;

[0030] Figure 5 This is a schematic diagram of the sealing sleeve.

[0031] Figure 6 This is a schematic diagram of a partial connection structure between the coal-water-gas collection assembly and the drill pipe.

[0032] The diagram is labeled as follows: 1. Tracked vehicle, 2. Coal-water centrifuge, 3. Gas extraction pipe, 4. Mixing collection box, 41. Left chamber, 42. Right chamber, 43. Partition, 44. Slag discharge port, 5. Coal-water-gas inlet pipe, 6. Screw conveyor, 7. Water pump, 71. Pumping pipe, 72. Discharge pipe, 8. Sleeve, 81. Guide sleeve, 82. Sealing ring, 83. Coal-water-gas discharge pipe, 9. Sealing sleeve, 91. Rubber sleeve, 92. Threaded sleeve, 93. Rotating handle, 10. Coal-water-gas gap channel, 11. Sealing plate, 12. Air pressure sensor, 13. Drill rod, 14. Drill hole, 15. Main control mechanism, 16. Hydraulic cylinder. Detailed Implementation

[0033] The specific implementation of this technical solution will be described in detail below with reference to the accompanying drawings.

[0034] As shown in the figure, this invention is a fully enclosed integrated coal, water, and gas blowout prevention, collection, and separation device, comprising a tracked vehicle 1 and a chassis mounted on the tracked vehicle 1. The chassis is equipped with a coal-water-gas collection mechanism, a coal slag discharge mechanism, a coal-water separation mechanism, a main control mechanism 15, and a gas extraction pipe 3.

[0035] The coal-water-gas collection mechanism includes a mixing collection box 4 for collecting coal water and gas. The inner cavity of the mixing collection box 4 is divided into a left chamber 41 and a right chamber 42 by a partition 43. A coal-water-gas inlet pipe 5 is provided on one side of the left chamber 41. The top end of the coal-water-gas inlet pipe 5 is connected to a drill rod 13 for coal seam drilling through a coal-water-gas collection assembly.

[0036] The slag discharge mechanism includes an auger conveyor 6, which is inclined downward at the bottom of the right chamber 42. The bottom inlet of the auger conveyor 6 is sealed to the bottom outlet of the right chamber 42. The auger conveyor 6 is also equipped with a hydraulic sealing assembly for sealing the bottom outlet of the right chamber 42.

[0037] The coal-water separation mechanism includes a water pump 7 and a coal-water centrifuge 2 connected to the water pump 7. The water pump 7 is connected to the inner cavity of the right chamber 42 through a water pumping pipe 71.

[0038] The gas extraction pipe 3 is located on top of the mixing collection box 4.

[0039] The above are the basic embodiments of the present invention, and further improvements, optimizations or limitations can be made on the basis of the above.

[0040] For example, further, such as Figure 1-2 As shown, the top ends of the inner cavities of the left chamber 41 and the right chamber 42 are interconnected. The right chamber 42 has an inclined bottom and the bottom outlet of the right chamber 42 is a slag discharge port 44. The top of the auger conveyor 6 is inclined and attached to the bottom of the right chamber 42.

[0041] The inclined bottom structure of the right chamber 42 serves two purposes: first, it allows the solid coal slag in the coal-water-gas mixture to settle against the side of the left chamber, making it easier for it to fall out from the slag discharge port; second, it can form a structural cooperation with the auger conveyor 6, so that the auger conveyor 6 also forms an inclined posture to prevent the liquid in the coal-water-gas mixture from being sent out, achieving two goals at once.

[0042] For example, further, the bottom end of the coal-water-gas inlet pipe 5 is inclined downwards and passes through the left chamber 41 and the partition 43 in sequence before communicating with the inner cavity of the right chamber 42.

[0043] The location of the coal-water-gas inlet pipe 5, as the centralized transportation pipeline for coal-water-gas, is crucial. On the one hand, the inlet pipe 5 must be long enough to ensure a stable flow of coal-water-gas into the right chamber 42. On the other hand, the height of its bottom outlet must be just right to ensure smooth flow of coal-water-gas into the right chamber 42 without backflowing into the pipeline. Therefore, its height needs to be determined based on the characteristics of the coal seam and coal-water-gas through long-term practical experience. This scheme ultimately chooses to let its bottom pass through the partition 43 into the right chamber 42, rather than entering through the gap at the top of the partition 43. This is mainly to provide sufficient space for the upward extraction of gas, improve the efficiency of gas extraction, and avoid pressure overload inside the chamber.

[0044] For example, further, such as Figure 4-6As shown, the coal-water-gas collection assembly includes a casing 8, a guide sleeve 81 disposed at the tail end of the casing 8, and a sealing sleeve 9 disposed on the casing 8 for sealing the borehole opening; wherein, the casing 8 is sleeved on the drill rod 13, and a coal-water-gas gap channel 10 for coal-water-gas discharge is formed between the casing 8 and the drill rod 13, and the top end of the casing 8 is inserted into the borehole 14, and the bottom end extends out of the borehole 14.

[0045] The guide sleeve 81 is integrally connected to the tail end of the casing 8, and the bottom end of the guide sleeve 81 is integrally provided with a sealing ring 82 for sealing connection with the drill rod 13. The circumferential wall of the guide sleeve 81 is provided with a coal-water-gas discharge pipe 83 for connecting with the coal-water-gas inlet pipe 5.

[0046] Meanwhile, the sealing sleeve 9 includes an integrally connected rubber sleeve 91 and threaded sleeve 92. The threaded sleeve 92 located on the lower side is threadedly connected to the sleeve 8. The top end of the rubber sleeve 91 is inserted into the drill hole 14 so that the rubber sleeve 91 is squeezed by rotating the threaded sleeve 92, thereby achieving the sealing of the drill hole opening by the rubber sleeve 91.

[0047] In addition, a rotating handle 93 is provided on the threaded sleeve 92.

[0048] As shown above, the coal-water-gas collection assembly used in this invention employs a casing and a sealing sleeve. Firstly, the end of the casing 8 can be directly inserted into the borehole 14 to a depth of at least 1-2 meters, allowing the gushing coal-water-gas to be kept as far away from the borehole opening as possible, reducing the possibility of ejection—a feature not found in existing borehole blowout prevention devices. Secondly, the sealing sleeve 9 seals the borehole opening; the combination of the threaded sleeve 92 and the rubber sleeve 91 has a "rotation tightening" function, ensuring that the rubber sleeve 92 essentially completely seals the borehole opening—another feature not found in existing borehole blowout prevention devices. Thirdly, the combination of the casing 8 and the drill rod 13 also... A significant advantage is the appropriate and elongated width of the coal-water-gas gap channel 10 between the casing 8 and the drill pipe 13. This gap width is specifically designed for the characteristics of coal-water-gas, ensuring that no congestion occurs during the coal-water-gas outflow process. Furthermore, the elongated channel increases the flow time of the coal-water-gas within the channel, thereby ensuring the stability of the coal-water-gas ejection and facilitating its collection. Especially in the face of sudden surges under high pressure, the ejection speed of the coal-water-gas becomes stable and balanced after passing through the coal-water-gas gap channel, reducing the pressure on the collection equipment. This is a major feature that distinguishes it from existing equipment.

[0049] For example, further, such as Figure 1-3As shown, the hydraulic sealing assembly includes a hydraulic cylinder 16 and a sealing plate 11 disposed at the end of the telescopic rod of the hydraulic cylinder 16. The hydraulic cylinder 16 is disposed parallel to the upper side of the auger conveyor 6. The head end of the hydraulic cylinder 16 is sealed through the side wall of the right chamber 42. The sealing plate 11 is located in the inner cavity of the right chamber 42 and is in close contact with the bottom wall of the right chamber 42, so that the sealing plate 11 can slide on the bottom wall of the right chamber 42 by the hydraulic cylinder 16, thereby sealing the bottom outlet of the right chamber 42.

[0050] Meanwhile, a pressure sensor 12 for monitoring the gas pressure in the mixing collection tank 4 is also installed in the right chamber 42. The pressure sensor 12 is connected to the main control mechanism so that when the gas pressure in the mixing collection tank 4 reaches a preset value, the main control mechanism operates the hydraulic cylinder 16 to drive the sealing plate 11 to seal the bottom outlet of the right chamber 42; and when the gas pressure is less than the preset value, it drives the sealing plate 11 to reset.

[0051] As shown above, see Figure 1-2 The two states reveal that the coal-water separation mechanism of this invention has a built-in safety anti-overflow function. When dealing with a sudden, continuous outflow of large amounts of coal-water-gas, if the outflow speed is too fast and the gas pressure in the right chamber 42 exceeds the preset value of the pressure sensor 12, the pressure sensor 12 will promptly transmit the signal to the main control mechanism. The main control mechanism will then further operate the hydraulic cylinder 16 to push the sealing plate 11 down to seal the slag discharge port 44, preventing the overflow of gas in the collection box from gushing out from the bottom slag discharge port. At this time, the negative pressure of the gas extraction pipe can be increased to fully absorb the gas in the collection box. After the pressure drops to a safe value, the hydraulic cylinder 16 will be triggered again to drive the sealing plate 11 to reset, open the slag discharge port 44, and return to the normal coal-water separation process. This process ensures that no gas leakage occurs and is very safe.

[0052] For example, further, such as Figure 1 As shown, the water pump 7 is a diaphragm pump. The water pump 7 is located at the bottom of the inner cavity of the left chamber 41. The water outlet pipe 72 of the water pump 7 passes through the right chamber 42 and is connected to the coal-water centrifuge 2 located on one side of the mixing and collecting tank 4.

[0053] Pump 7 can promptly extract the coal-water accumulated in the right chamber 42 and send it into the coal-water centrifuge 2 for centrifugal separation. The separated water can be collected by a special collection device and reused in the extraction and drilling operations, thus improving the utilization rate of limited underground water resources.

[0054] Furthermore, the height of the left chamber 41 is greater than the height of the right chamber 42. Multiple gas extraction pipes 3 are provided, one end of each gas extraction pipe 3 is connected to the top of the left chamber 41, and the other end of each gas extraction pipe 3 is connected to the negative pressure gas extraction main pipe in the coal mine.

[0055] In addition to the above technical solutions, the present invention can be further improved in more detail based on the above:

[0056] First, a protective cover is provided on the top of the coal-water separator 2 to protect the coal-water separator 2.

[0057] Second, a shock-absorbing base is provided at the bottom of the coal-water separator 2 to avoid its impact on the overall device.

[0058] The shock-absorbing base structure can be configured as follows:

[0059] The bottom of the coal-water separator 2 is equipped with a multi-layered base plate, and buffer springs are installed at the four corners of the bottom of the base plate between the underframe of the tracked vehicle.

[0060] In addition, to prevent the vibration of the coal-water separator 2 from affecting the connection position of the outlet pipe 72, a flexible hose can be installed between the end of the outlet pipe 72 and the inlet of the coal-water separator 2. This can effectively prevent the connection between the outlet pipe 72 and the equipment from loosening due to equipment vibration.

[0061] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been described above with reference to preferred embodiments, it is not intended to limit the present invention. Any modifications or alterations made by those skilled in the art without departing from the scope of the present invention are equivalent embodiments. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention are still within the scope of the present invention.

Claims

1. A fully enclosed integrated coal, water, and gas blowout prevention, collection, and separation device, comprising a tracked vehicle (1) and a chassis mounted on the tracked vehicle (1), characterized in that: The base frame is equipped with a coal-water-gas collection mechanism, a coal slag discharge mechanism, a coal-water separation mechanism, a main control mechanism (15), and a gas extraction pipe (3); among which, The coal-water-gas collection mechanism includes a mixing collection box (4) for collecting coal water and gas. The mixing collection box (4) is divided into a left chamber (41) and a right chamber (42) by a partition (43). A coal-water-gas inlet pipe (5) is provided on one side of the left chamber (41). The top end of the coal-water-gas inlet pipe (5) is connected to a drill rod (13) for coal seam drilling through a coal-water-gas collection assembly. The slag discharge mechanism includes an auger conveyor (6), the bottom end of which is inclined downwards and located at the bottom of the right chamber (42). The bottom inlet of the auger conveyor (6) is sealed to the bottom outlet of the right chamber (42). The auger conveyor (6) is also equipped with a hydraulic sealing assembly for sealing the bottom outlet of the right chamber (42). The coal-water separation mechanism includes a water pump (7) and a coal-water centrifuge (2) connected to the water pump (7). The water pump (7) is connected to the inner cavity of the right chamber (42) through a water pumping pipe (71). The gas extraction pipe (3) is located on top of the mixing collection box (4); The top of the inner cavity of the left chamber (41) and the right chamber (42) are connected to each other. The right chamber (42) has an inclined bottom. The bottom outlet of the right chamber (42) is a slag discharge port (44). The top of the screw conveyor (6) is inclined and close to the bottom of the right chamber (42). The bottom end of the coal-water-gas inlet pipe (5) is inclined downwards and passes through the left chamber (41) and the partition (43) in sequence before communicating with the inner cavity of the right chamber (42); The coal-water-gas collection assembly includes a casing (8), a guide sleeve (81) disposed at the tail end of the casing (8), and a sealing sleeve (9) disposed on the casing (8) for sealing the borehole opening; wherein, the casing (8) is sleeved on the drill rod (13) and forms a coal-water-gas gap channel (10) for coal-water-gas discharge between the casing (8) and the drill rod (13), and the top end of the casing (8) is inserted into the borehole (14), and the bottom end extends out of the borehole (14). The guide sleeve (81) is integrally connected to the tail end of the sleeve (8), and the bottom end of the guide sleeve (81) is integrally provided with a sealing ring (82) for sealing connection with the drill rod (13). The circumferential wall of the guide sleeve (81) is provided with a coal-water-gas discharge pipe (83) for connecting with the coal-water-gas inlet pipe (5). The hydraulic sealing assembly includes a hydraulic cylinder (16) and a sealing plate (11) disposed at the end of the telescopic rod of the hydraulic cylinder (16). The hydraulic cylinder (16) is disposed parallel to the upper side of the auger conveyor (6). The head end of the hydraulic cylinder (16) is sealed and inserted through the side wall of the right chamber (42). The sealing plate (11) is located in the inner cavity of the right chamber (42) and is in close contact with the bottom wall of the right chamber (42) so that the sealing plate (11) can slide on the bottom wall of the right chamber (42) by the hydraulic cylinder (16) to achieve sealing of the bottom outlet of the right chamber (42).

2. The fully enclosed integrated coal, water, and gas blowout prevention collection and separation device as described in claim 1, characterized in that: The sealing sleeve (9) includes an integrally connected rubber sleeve (91) and threaded sleeve (92). The threaded sleeve (92) located on the lower side is threadedly connected to the sleeve (8). The top of the rubber sleeve (91) is inserted into the drill hole (14) so ​​that the rubber sleeve (91) can be squeezed by rotating the threaded sleeve (92) to achieve the sealing of the drill hole opening by the rubber sleeve (91).

3. The fully enclosed integrated coal, water, and gas blowout prevention collection and separation device as described in claim 2, characterized in that: The threaded sleeve (92) is provided with a rotating handle (93).

4. The fully enclosed integrated coal, water, and gas blowout prevention collection and separation device as described in claim 1, characterized in that: The right chamber (42) is also equipped with a pressure sensor (12) for monitoring the gas pressure in the mixing collection box (4). The pressure sensor (12) is connected to the main control mechanism so that when the gas pressure in the mixing collection box (4) reaches a preset value, the main control mechanism operates the hydraulic cylinder (16) to drive the sealing plate (11) to seal the bottom outlet of the right chamber (42); and when the gas pressure is less than the preset value, the sealing plate (11) is reset.

5. The fully enclosed integrated coal, water, and gas blowout prevention collection and separation device as described in claim 1, characterized in that: The water pump (7) is a diaphragm pump. The water pump (7) is located at the bottom of the inner cavity of the left chamber (41). The water outlet pipe (72) on the water pump (7) passes through the right chamber (42) and is connected to the coal-water centrifuge (2) located on one side of the mixing collection box (4).

6. The fully enclosed integrated coal, water, and gas blowout prevention collection and separation device as described in claim 1, characterized in that: The height of the left chamber (41) is greater than the height of the right chamber (42). Multiple gas drainage pipes (3) are provided. One end of each gas drainage pipe (3) is connected to the top of the left chamber (41), and the other end of each gas drainage pipe (3) is connected to the negative pressure gas drainage main pipe in the coal mine.

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