Mine red intelligent automatic drainage system for mine and working method

Abstract

The invention discloses a red-mine intelligent automatic drainage system for a mine and a working method, and relates to the technical field of mine drainage. The red-mine intelligent automatic drainage system comprises a pipeline and a filtering mechanism integrated on the pipeline; the pipeline is formed by connecting a plurality of sections of water pipes, and the filtering mechanism comprises a metal filter cartridge, a cleaning assembly and a pressure relief channel which are arranged in the water pipe; the cleaning assembly is connected with the filter cartridge and is driven by water flow pressure; an inlet of the pressure relief channel is communicated with the interior of the filter cartridge, and on-off is controlled by axial movement of the filter cartridge. The problems that in a traditional mine drainage system in the prior art, a filter screen is prone to being blocked due to solid particles in sewage, cleaning and maintenance are difficult, efficiency is low, and equipment is prone to being damaged are solved. The device has the advantages that automatic cleaning and intelligent pressure relief of the filter cartridge are achieved through hydraulic driving, blockage is effectively avoided, and the automation degree and operation reliability of a drainage system are improved.

Description

Technical Field

[0001] This invention relates to the field of mine drainage technology, and in particular to an intelligent automatic mine drainage system and its working method. Background Technology

[0002] In underground coal mines, drainage is a crucial aspect of the coal mining process. Its main task is to remove groundwater and accumulated water that flows into the mine, ensuring unobstructed underground roadways, normal operation of production equipment, and the safety of workers. As mining depth increases, the pressure on groundwater resources continues to rise, and the problem of mine flooding becomes increasingly serious. Establishing an efficient and reliable drainage system is of paramount importance for maintaining continuous mine production and preventing mine flooding accidents.

[0003] Coal mine environments are characterized by high levels of methane and coal dust, making them potentially explosive. Therefore, all underground electrical equipment and control devices must comply with relevant national and industry explosion-proof standards to ensure safe operation in hazardous atmospheres. For example, drainage system control boxes are often equipped with explosion-proof enclosures and include methane concentration detectors and alarm devices to enable real-time monitoring and safety linkage of ambient gases. Simultaneously, equipment such as explosion-proof motors used in mining require specialized drainage structures, such as explosion-proof breather valves, to drain condensate generated inside the motor and prevent external water or explosive gases from entering, thereby improving equipment safety and service life.

[0004] In existing technologies, the filtration stage in drainage systems faces severe challenges. The large amounts of solid particles such as coal dust and rock debris in mine wastewater easily adhere to and accumulate on the surface of filter components, causing blockage of the filter screen or cartridge. This not only reduces drainage efficiency and increases energy consumption but may also damage pipeline equipment due to increased internal pressure. Although existing technologies use filter screens for impurity filtration, they generally suffer from inconvenient cleaning and low automation, especially after prolonged operation where clogging of filter components becomes particularly prominent. Furthermore, improper cleaning or maintenance may introduce external air or ignite sparks during disassembly or backwashing, increasing safety hazards. Therefore, there is a need to develop intelligent filtration technologies with self-cleaning capabilities, reliable explosion-proof performance, and adaptability to the harsh working conditions of mines.

[0005] To address the above technical problems, this invention discloses a mine intelligent automatic drainage system and its working method. This invention has the advantages of achieving automatic cleaning and intelligent pressure relief of the filter cartridge through hydraulic drive, effectively avoiding blockage, and improving the automation level and operational reliability of the drainage system. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a mine intelligent automatic drainage system and its working method. This invention solves the technical problems of traditional mine drainage systems, such as filter clogging caused by solid particles in sewage, which leads to difficulties in cleaning and maintenance, low efficiency, and easy damage to equipment. This invention has the advantages of achieving automatic cleaning and intelligent pressure relief of the filter cartridge through hydraulic drive, effectively avoiding clogging, and improving the automation level and operational reliability of the drainage system.

[0007] The present invention is achieved through the following technical solution: The present invention discloses a mine intelligent automatic drainage system, including pipelines and a filtration mechanism integrated thereon; the pipelines are composed of multiple sections of water pipes connected together, and the filtration mechanism includes a metal filter cartridge, a cleaning component and a pressure relief channel disposed inside the water pipes; the cleaning component is connected to the filter cartridge and is driven by water pressure; the inlet of the pressure relief channel is connected to the inside of the filter cartridge, and its opening and closing is controlled by the axial movement of the filter cartridge.

[0008] Furthermore, the filter cartridge can be axially movably installed inside the water pipe, and its open end forms a sliding seal with the inner wall of the water pipe through a sealing ring; a fixed ring is fixed inside the water pipe in the direction of the closed end of the filter cartridge, and the fixed ring and the sealing ring are connected by a sliding rod, and a spring that provides a restoring elastic force is sleeved on the sliding rod.

[0009] Furthermore, the cleaning component includes a rotating shaft, a cleaning brush, and a triggering part; the rotating shaft is rotatably disposed at the center of the closed disc of the filter cartridge, one end of which extends into the interior of the filter cartridge and is equipped with a cleaning brush, and the other end extends toward the rear of the filter cartridge and has a spiral hole.

[0010] Furthermore, the triggering part includes a fixing bracket fixed to the inner wall of the water pipe and a spiral rod installed thereon; when the filter cartridge moves backward due to blockage, the rotating shaft drives the internal spiral hole to mesh with the spiral rod, converting the axial movement of the filter cartridge into the rotational movement of the rotating shaft, driving the cleaning brush to clean the inner wall of the filter cartridge.

[0011] Furthermore, the pressure relief channel includes a pressure relief pipe, a diversion pipe, and a sealing cylinder; one end of the pressure relief pipe is connected to the closed disc of the filter cartridge and communicates with the inside of the filter cartridge, and the other end is connected to the sealing cylinder; the diversion pipe is set outside the water pipe, and its two ends are connected to the inside of the water pipe through connecting pipes; the sealing cylinder is slidably installed inside the water pipe, and its outer wall is sealed to the inner wall of the water pipe.

[0012] Furthermore, the sealing cylinder covers the connection port of the diversion pipe; when the filter cartridge moves to the preset position, it drives the sealing cylinder to shift, so that the pressure relief port is aligned with the diversion pipe port, forming a diversion path.

[0013] Furthermore, a water flow sensor is installed on the diversion pipe to monitor whether the pressure relief channel is activated.

[0014] Furthermore, the flow cross-section of the pressure relief pipe is smaller than the normal filtration flow cross-section of the filter cartridge.

[0015] Furthermore, a spare filter pipe is installed outside the diversion pipe for secondary filtration of the diverted wastewater.

[0016] A method for operating a mine intelligent automatic drainage system includes the following steps: Step 1: Mine wastewater enters the filter cartridge for initial filtration and normal drainage; Step 2: When the filter holes become clogged, causing the water pressure to rise, the water pressure pushes the filter cartridge to move axially, triggering the cleaning component; Step 3: The axial movement of the filter cartridge is converted into the rotational motion of the cleaning brush through the triggering part, which automatically cleans the inner wall of the filter cartridge; Step 4: If the blockage is not relieved after cleaning, the filter cartridge continues to move to the preset position and opens the pressure relief channel to divert and relieve pressure.

[0017] The present invention has the following advantages: (1) This invention provides efficient and adaptive filtration and cleaning in complex mining environments. Its core lies in utilizing the pressure change of the water flow itself as a driving signal, converting the axial movement of the filter cartridge into the rotational motion of the cleaning brush via a helical pair, thus completing the automatic cleaning of the filter cartridge. This process requires no external power supply, not only reducing energy consumption but also fundamentally eliminating potential safety hazards from electrical equipment underground, meeting the requirements of safe production in mines. This proactive maintenance mechanism of "blockage triggers, triggers clean" effectively maintains filtration efficiency, reduces downtime caused by blockages, and thus ensures the continuous and stable operation of the drainage system.

[0018] (2) This invention establishes a multi-layered, collaborative safety defense by constructing an intelligent pressure relief channel. When the system detects severe blockage of the filter cartridge and the self-cleaning measures fail to alleviate the blockage, it automatically and safely diverts the high-pressure fluid to the backup filter pipeline. This process requires no manual intervention, which not only proactively avoids potential damage to the pump, valves, and main pipeline caused by a sudden increase in pressure, but also uses a dedicated water flow sensor on the bypass pipeline to confirm the pressure relief status in real time and immediately issue a precise maintenance alarm to the staff. Combined with the configuration of the backup filter cartridge, the system realizes a shift from a "passive emergency response" to an "active early warning" operation and maintenance mode, significantly improving the reliability and intelligent management level of the entire drainage system. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the system flow of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the water pipe of the present invention; Figure 4This is a schematic diagram of the internal cleaning component of the water pipe according to the present invention; Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at point B; Figure 6 For the present invention Figure 3 A magnified schematic diagram of the structure at point A; Figure 7 This is a schematic diagram of the diversion tube structure of the present invention.

[0020] In the diagram: 1. Pipeline; 2. Filter mechanism; 3. Valve; 4. Sealing disc; 5. Sealing ring; 6. Cleaning assembly; 7. Fixing ring; 8. Slide rod; 9. Spring; 10. Limiting step; 11. Pressure relief channel; 12. Connection interface; 13. Filter pipe; 14. Water flow sensor; 15. Central controller; 101. Water pipe; 201. Filter cartridge; 601. Rotating shaft; 602. Cleaning brush; 603. Trigger; 631. Fixing frame; 632. Helical rod; 111. Pressure relief pipe; 112. Diverter pipe; 113. Sealing cylinder; 1101. Axial pipe; 1102. Radial pipe; 1121. Flow pipe; 1122. Connecting pipe. Detailed Implementation

[0021] The embodiments of the present invention are described in detail below. These embodiments are implemented based on the technical solution of the present invention, and provide detailed implementation methods and specific operation processes. However, the scope of protection of the present invention is not limited to the following embodiments. In the description of the present invention, words such as "front", "rear", "left", and "right" that indicate orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0022] The embodiments disclose a mine intelligent automatic drainage system, such as Figures 1-7 As shown, it mainly consists of a pipeline 1 and a filter mechanism 2 integrated thereon. Pipeline 1 is responsible for discharging mine wastewater to the outside. It is usually composed of multiple sections of water pipe 101 connected by flanges, and valves 3 are installed at key locations to regulate the water flow. Since mine wastewater often contains a large number of solid particulate impurities, which can easily damage equipment such as valves 3 and water pumps, a filter mechanism 2 is installed at the inlet of each valve 3 or water pump to intercept impurities and protect downstream equipment.

[0023] like Figures 1-4As shown, the core component of the filtration mechanism 2 is a metal filter cartridge 201 installed inside the water pipe 101. One end of the filter cartridge 201 is a closed end, sealed by a sealing disc 4, and the other end is an open end, facing the direction of incoming water. Several filter holes are opened on the peripheral wall of the filter cartridge 201. Wastewater flows into the cartridge from the open end and flows out through the filter holes, thereby achieving solid-liquid separation. A sealing ring 5 is fitted on the outer wall of the open end of the filter cartridge 201 to ensure that a seal is formed between it and the inner wall of the water pipe 101, so that water can only flow through the filter cartridge 201. The outer diameter of the filter cartridge 201 is smaller than the inner diameter of the water pipe 101, so that the filtered water can continue to flow backward along the annular gap between the filter cartridge 201 and the pipe wall, and then enter the subsequent pipeline 1.

[0024] Considering that in actual operation, the filter pores on the surface of the filter cartridge 201 will inevitably become gradually clogged by impurities in the sewage during long-term operation, affecting drainage efficiency, this embodiment adds a cleaning component 6 to the filtration mechanism 2 to automatically clean the filter cartridge 201 and maintain filtration performance.

[0025] Furthermore, to achieve self-cleaning functionality under unattended operation, the cleaning component 6 is designed to be powered by water flow. When the filter cartridge 201 becomes severely clogged, leading to increased flow resistance, the change in water pressure will automatically trigger the cleaning component 6 to operate, using hydraulic power to clean the filter cartridge 201. The entire process requires no external power, meeting the safety and practical needs of a mining environment.

[0026] Specifically, such as Figures 1-5 As shown, in this embodiment, the filter cartridge 201 can be movably installed along the axial direction of the water pipe 101, and its open end forms a sliding seal with the inner wall of the water pipe 101 through the sealing ring 5. A fixing ring 7 is provided on the rear side of the closed end of the filter cartridge 201, and several sliding rods 8 are evenly fixed on the ring along the circumference. The other end of the sliding rod 8 passes through the sealing ring 5 and is provided with a limiting step 10 to prevent it from falling out. A spring 9 is sleeved on the outside of the sliding rod 8, supporting it between the sealing ring 5 and the fixing ring 7, providing elastic restoring force for the filter cartridge 201. When the filter holes are blocked, causing drainage to be obstructed, the water flow pressure will push the filter cartridge 201 to move towards the fixing ring 7 and compress the spring 9, thus triggering the cleaning component 6 to automatically clean the inner wall of the filter cartridge 201.

[0027] The cleaning assembly 6 includes a rotating shaft 601, a cleaning brush 602, and a triggering part 603. The rotating shaft 601 is rotatably positioned at the center of the closed disc 4 of the filter cartridge 201 and serves as an axial limiter. Its two ends extend into the interior and rear of the filter cartridge 201, respectively. The cleaning brush 602 is mounted on the end of the rotating shaft 601 inside the filter cartridge 201. The brush bristles are made of metal to enhance the cleaning effect and maintain contact with the inner wall of the filter cartridge 201. When the rotating shaft 601 rotates, it drives the cleaning brush 602 to move in a circular motion around the central axis of the filter cartridge 201, thereby achieving comprehensive scraping of the inner wall of the filter cartridge 201 and effectively removing impurities that clog the filter pores.

[0028] The triggering unit 603 consists of a fixed frame 631 and a spiral rod 632. The fixed frame 631 is fixed to the inner wall of the water pipe 101 by several connecting rods evenly distributed circumferentially, and is located at the rear end of the filter cartridge 201. A central column extending axially is provided at the center of the fixed frame 631, and the spiral rod 632 is fixedly installed at the end of the central column facing the filter cartridge 201. A spiral hole matching the spiral rod 632 is opened inside the section of the rotating shaft 601 extending towards the rear end of the filter cartridge 201. When the filter holes become heavily clogged due to impurities, causing the water flow resistance to exceed the preload of the spring 9, the filter cartridge 201 will move axially backward, driving the rotating shaft 601 to move backward as a whole, causing the spiral rod 632 to gradually screw into the spiral hole. Through the transmission action of the spiral pair, the axial linear motion of the filter cartridge 201 is converted into the rotational motion of the rotating shaft 601, thereby driving the cleaning brush 602 to perform a circumferential cleaning action around the inner wall of the filter cartridge 201, achieving automatic cleaning in the clogged state.

[0029] like Figures 1-7 As shown, during long-term operation of the mine drainage system, the filter holes on the surface of the filter cartridge 201 gradually become clogged due to the continuous accumulation of impurities, affecting normal drainage. Although a cleaning brush 602 mechanism is provided, its cleaning effect is limited. Especially when the solid impurities accumulated inside the filter cartridge 201 reach a certain level, brushing alone cannot completely remove the accumulated materials, and may still cause the filter cartridge 201 to become completely clogged. If the internal pressure continues to rise at this time, it may cause damage to the water pipe 101. To address this, this embodiment adds a pressure relief channel 11 to each filter mechanism 2, which automatically activates when the cleaning brush 602 fails to alleviate the clogging, diverting and releasing the water flow inside the filter cartridge 201 to control the system pressure.

[0030] Specifically, the pressure relief channel 11 consists of a pressure relief pipe 111, a diversion pipe 112, and a sealing cylinder 113. The pressure relief pipe 111 is designed as a bent pipe structure, including an axial pipe 1101 coaxial with the water pipe 101 and a radial pipe 1102 arranged radially. One end of the axial pipe 1101 is fixed to the closed disc 4 of the filter cartridge 201 and communicates with the inside of the filter cartridge 201, while the other end is connected to the radial pipe 1102 through an elbow. The sealing cylinder 113 is slidably installed inside the water pipe 101 at the rear end of the filter cartridge 201, and a sliding seal is formed between its outer wall and the inner wall of the water pipe 101. The outer end of the radial pipe 1102 is fixedly connected to the cylinder wall of the sealing cylinder 113 and penetrates the outer wall of the sealing cylinder 113 to form an interface. In addition, a connection interface 12 is opened on the outer wall of the sealing cylinder 113 coaxially with the opening of the radial pipe 1102. The openings of the connecting interface 12 and the radial pipe 1102 on the outer wall of the sealing cylinder 113 are coaxial and spaced apart. The diversion pipe 112 is arranged outside the water pipe 101 and consists of a flow pipe 1121 parallel to the water pipe 101 and connecting pipes 1122 at both ends. The connecting pipes 1122 are connected to the inside of the water pipe 101. Under normal conditions, the sealing cylinder 113 completely covers the openings of the two connecting pipes 1122, blocking the diversion path. When the filter cartridge 201 moves backward to the preset upper limit position due to blockage, it will drive the pressure relief pipe 111 and the sealing cylinder 113 to move synchronously, so that the openings of the radial pipe 1102 and the connecting interface 12 on the sealing cylinder 113 are aligned with the openings of the two connecting pipes 1122, thereby forming a diversion channel to guide the high-pressure sewage to the subsequent pipeline 1 and avoid excessive local pressure.

[0031] In addition, to further improve the reliability and maintainability of the system, a large-diameter filter pipe 13 is added outside the diversion pipe 112, which contains a spare metal filter cartridge 201 for secondary filtration of the diverted sewage. A flow sensor 14 is installed on the diversion pipe 112, and the drainage system in this embodiment is equipped with a central controller to monitor the diversion operation. Its signal can indicate that the filter cartridge 201 is completely blocked, facilitating timely cleaning by staff. The flow cross-section of the pressure relief pipe 111 is smaller than the normal filtration cross-section of the filter cartridge 201. Therefore, during the pressure relief process, the smaller flow area will generate back pressure, keeping the filter cartridge 201 in the pressure relief open state until some of the blockage is discharged, the flow capacity of the filter cartridge 201 is restored, the system pressure drops, and the filter cartridge 201 is reset under the action of the spring 9.

[0032] In this embodiment, during operation: After system startup, mine wastewater first enters the metal filter cartridge 201 of the filtration mechanism 2, completing solid-liquid separation. Clean water flows through the filter holes and into the annular gap between the filter cartridge 201 and the water pipe 101 for rearward transport. As the filter holes gradually become clogged due to impurities, the fluid resistance increases. When the water pressure overcomes the preload of the spring 9, it pushes the filter cartridge 201 to move axially backward. This movement is converted into rotational motion of the shaft 601 fixed at the rear end of the filter cartridge 201 by the meshing action of the screw rod 632, driving the cleaning brush 602 inside the filter cartridge 201 to perform circumferential scraping, automatically removing impurities adhering to the inner wall of the filter cartridge 201. If the blockage is severe and cannot be restored after cleaning, the filter cartridge 201 will continue to move backward to the preset limit position. At this time, the pressure relief channel 11 linked with the filter cartridge 201 is connected: the radial opening of the pressure relief pipe 111 is aligned with the corresponding interface on the diversion pipe 112, forming a bypass. High-pressure water flows out through this bypass and is then filtered twice by the external backup filter cartridge 201 before flowing into the main stream. Because the flow cross-section of the pressure relief pipe 111 is smaller than the normal filtration area of ​​the filter cartridge 201, the resulting back pressure can maintain the pressure relief state until some of the blockage is flushed away and the system pressure drops. Only then will the filter cartridge 201 reset under the action of the spring 9, the pressure relief channel 11 close, and the system resume normal filtration.

[0033] A method for operating a mine intelligent automatic drainage system includes the following steps: Step 1: Initial filtration and normal drainage, specifically: After system startup, mine wastewater enters the filtration mechanism 2 through the inlet of water pipe 101. The water first flows into the metal filter cartridge 201 through its open end. Under hydraulic pressure, the wastewater penetrates the filter holes on the peripheral wall of the filter cartridge 201, achieving solid-liquid separation—solid particles in the water are trapped inside the filter cartridge 201, while the filtered clean water flows out through the filter holes. Subsequently, the clean water continues to flow backward through the annular space between the outer wall of the filter cartridge 201 and the inner wall of water pipe 101, entering subsequent pipeline 1 and the water pump, completing the normal drainage operation.

[0034] Step Two: Blockage Detection and Cleaning Trigger. Specifically, as impurities gradually clog the filter pores on the surface of filter cartridge 201, the water flow channel narrows, causing the fluid resistance inside filter cartridge 201 to continuously increase, resulting in higher water pressure. When the thrust generated by this increased water pressure is sufficient to overcome the preload of the spring 9 supporting filter cartridge 201, the entire filter cartridge 201 will be pushed backward along the axial direction of water pipe 101. This axial movement is the trigger signal to activate the automatic cleaning program.

[0035] Step 3: Power Conversion and Automatic Cleaning. Specifically, the rotating shaft 601, fixed to the rear end of the filter cartridge 201, moves accordingly, causing its helical hole at the end to engage with the helical rod 632 fixed inside the water pipe 101. Utilizing the transmission principle of the helical pair, the linear motion of the filter cartridge 201 is converted into the rotational motion of the rotating shaft 601. The rotating shaft 601 drives the cleaning brush 602 located inside the filter cartridge 201 to rotate around the central axis, thereby thoroughly scraping the inner wall of the filter cartridge 201 and removing impurities adhering to the filter holes.

[0036] Step Four: Opening and Diverting the Pressure Relief Channel 11. Specifically, if the filter cartridge 201 is severely clogged and the above cleaning cannot effectively alleviate the blockage, the filter cartridge 201 will continue to move backward under continuous high water pressure until it reaches a preset limit position. At this time, the pressure relief pipe 111 and the sealing cylinder 113, which are linked to the filter cartridge 201, also move synchronously to a specific point, aligning the radial opening on the pressure relief pipe 111 with the interface on the external bypass diversion pipe 112, forming a bypass water path. Thus, the high-pressure water flow can be diverted through this pressure relief channel 11 and directly enter the external backup filter pipeline 1, thereby effectively preventing the main pipeline 1 from being damaged by excessive pressure. A water flow sensor 14 can be installed on the diversion pipe 112 to monitor the occurrence of the pressure relief action and prompt the staff to carry out maintenance.

[0037] Step 5: Pressure Relief and System Reset. Specifically, the flow cross-section of the pressure relief pipe 111 is intentionally designed to be smaller than the normal filtration cross-section of the filter cartridge 201. Therefore, during the pressure relief process, the smaller flow area generates a certain back pressure, which helps maintain the filter cartridge 201 in the pressure relief open state. As some of the blockages are flushed away by the high-pressure water flow or discharged through diversion, the flow capacity of the filter cartridge 201 gradually recovers, and the internal pressure of the system decreases accordingly. When the water pressure drops below the reset force of the spring 9, the filter cartridge 201 moves forward under the action of the spring 9, returning to its initial position. The pressure relief channel 11 closes, and the system automatically switches back to the normal filtration and drainage mode.

[0038] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A mine intelligent automatic drainage system for mine, comprising a pipeline (1) and a filtering mechanism (2) integrated thereon; the pipeline (1) is connected by a plurality of water pipes (101), characterized in that, The filter mechanism (2) comprises a metal filter cartridge (201) arranged inside a water pipe (101), a cleaning assembly (6) and a pressure relief channel (11); the cleaning assembly (6) is connected with the filter cartridge (201) and is driven by water flow pressure; the inlet of the pressure relief channel (11) is in communication with the inside of the filter cartridge (201), and the opening and closing thereof is controlled by the axial movement of the filter cartridge (201).

2. A mine intelligent automatic drainage system for mine, according to claim 1, characterized in that, The filter cartridge (201) is axially movably arranged inside the water pipe (101), and the open end thereof is in sliding sealing with the inner wall of the water pipe (101) through a sealing ring (5); a fixed ring (7) is fixed in the inside of the water pipe (101) in the direction of the closed end of the filter cartridge (201), and the fixed ring (7) is connected with the sealing ring (5) through a slide rod (8), and a spring (9) providing a restoring force is sleeved on the slide rod (8).

3. A mine intelligent automatic drainage system for mine, according to claim 2, characterized in that, The cleaning assembly (6) comprises a rotating shaft (601), a cleaning brush (602) and a trigger part (603); the rotating shaft (601) is rotatably arranged at the center of the closed disc (4) of the filter cartridge (201), one end of the rotating shaft (601) extends into the inside of the filter cartridge (201) and is provided with the cleaning brush (602), and the other end extends to the rear of the filter cartridge (201) and is provided with a helical hole.

4. A mine intelligent automatic drainage system for mine, according to claim 3, characterized in that, The trigger part (603) comprises a fixed frame (631) fixed to the inner wall of the water pipe (101) and a helical rod (632) mounted thereon; when the filter cartridge (201) moves backward due to blockage, the rotating shaft (601) drives the internal helical hole to engage with the helical rod (632), so that the axial movement of the filter cartridge (201) is converted into the rotating movement of the rotating shaft (601), and the cleaning brush (602) is driven to clean and brush the inner wall of the filter cartridge (201).

5. The mine intelligent automatic drainage system for mine according to claim 1, characterized in that, The pressure relief channel (11) comprises a pressure relief pipe (111), a shunt pipe (112) and a sealing cylinder (113); one end of the pressure relief pipe (111) is connected with the closed disc (4) of the filter cartridge (201) and is in communication with the inside of the filter cartridge (201), and the other end is connected with the sealing cylinder (113); the shunt pipe (112) is arranged outside the water pipe (101), and the two ends thereof are in communication with the inside of the water pipe (101) through a connecting pipe (1122); the sealing cylinder (113) is slidably arranged inside the water pipe (101), and the outer wall thereof is in sealing cooperation with the inner wall of the water pipe (101).

6. A mine intelligent automatic drainage system for mine, according to claim 5, characterized in that, The sealing cylinder (113) covers the connecting pipe (1122) of the shunt pipe (112); when the filter cartridge (201) moves to a preset position, the sealing cylinder (113) is driven to displace, so that the opening of the pressure relief pipe (111) is aligned with the opening of the shunt pipe (112), and a shunt path is formed.

7. A mine intelligent automatic drainage system for mine hoist as claimed in claim 6, characterized in that, A water flow sensor (14) is mounted on the shunt pipe (112) for monitoring whether the pressure relief channel (11) is started.

8. A mine intelligent automatic drainage system for mine, according to claim 5, characterized in that, The flow passage cross section of the pressure relief pipe (111) is smaller than the normal filtering flow passage cross section of the filter cartridge (201).

9. A mine intelligent automatic drainage system for mine, according to claim 5, characterized in that, An auxiliary filtering pipe (13) is arranged outside the shunt pipe (112) for performing secondary filtering on the shunted sewage.

10. A method for operating a mine-hoist intelligent automatic drainage system according to any one of claims 1-9, characterized in that, The method comprises the following steps: Step one: the mine sewage enters the filter cartridge (201) to perform initial filtering and normal drainage; Step two: when the filter hole is blocked, the water pressure pushes the filter cartridge (201) to move axially, triggering the cleaning assembly (6); Step three: the axial movement of the filter cartridge (201) is converted into the rotary motion of the cleaning brush (602) through the trigger part (603), and the inner wall of the filter cartridge (201) is automatically cleaned; Step four: if the blockage is not relieved after cleaning, the filter cartridge (201) continues to move to the preset position, and the pressure relief channel (11) is opened for shunt pressure relief.

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