Water seepage detection device for coal mine

Abstract

The invention relates to the technical field of coal mine safety, and discloses a coal mine water seepage detection device which comprises a detection box, an operation groove is formed in the detection box, a plurality of supporting cylinders are fixedly connected to the bottom wall of the operation groove, protection cylinders are movably connected into the supporting cylinders, detection shells are arranged in the protection cylinders, and humidity sensors are placed in the detection shells. A lifting assembly is arranged in the supporting cylinder, connected with the detection shell, acts on the detection shell and comprises a sealing plate, the bottom of the sealing plate is fixedly connected to the top of the supporting cylinder, the middle of the sealing plate is rotationally connected with a rotating handle through a bearing seat, an electric push rod is fixedly installed at the bottom of the rotating handle, and the output end of the bottom of the electric push rod is fixedly connected with a rotating plate. The device is high in protection performance, the detection shell and the humidity sensor are contained in the protection barrel in a non-working state, dust, accumulated water, broken stone and other impurities in a coal mine can be effectively isolated, the situation that the sensor fails due to physical collision or pollution is avoided, and the durability of the device under the complex working condition is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of coal mine safety technology, specifically to a seepage detection device for coal mines. Background Technology

[0002] Coal mines are areas where humans extract coal resources in coal-rich areas. They are generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, underground tunnels are typically dug to extract the coal; this is called an underground coal mine. When the coal seam is very close to the surface, the surface soil layer is typically stripped directly to extract the coal; this is called an open-pit coal mine. The vast majority of coal mines in my country are underground coal mines. During the coal mining process, due to the mining of the coal seam working face, it is inevitable that the roof aquifer will be exposed, disturbed, or damaged, leading to the occurrence of water hazards in the mine. The severity of the water hazard depends on the amount of water. Therefore, it is crucial to determine the type of water body, the water-bearing capacity, scale, occurrence conditions, and permissible degree of mining impact of the aquifer, and to classify the water bodies affected by mining into different mining impact levels.

[0003] A search revealed that Chinese Patent Publication (Announcement) No. CN221002861U discloses a coal mine underground water seepage detection device, including a fixed box. A pre-assembly frame is provided on the outside of the fixed box, and an installation block is fixedly connected to the fixed box. The installation block has a pin groove. The pre-assembly frame has an installation groove and a movable groove inside. A movable plate is slidably connected within the movable groove. A pin rod extending into the installation groove is fixedly connected to the movable plate. A rotating rod is rotatably connected within the pre-assembly frame. The outer surface of the rotating rod, located within the movable groove, has an external thread. The movable plate is threaded onto the rotating rod. An operating mechanism is provided on the pre-assembly frame at a position corresponding to the rotating rod. This utility model allows for automatic monitoring and warning, offering greater convenience and reducing labor compared to conventional manual inspections using handheld instruments. It also ensures timely monitoring and warnings.

[0004] However, in existing technologies, most aquifers are detected directly through sensors. But mines are heavily polluted, which can easily contaminate the sensor probes, increasing detection costs. In addition, existing sensor probes are installed in fixed positions, allowing only single-point detection and insufficient coverage. Summary of the Invention

[0005] This invention provides a seepage detection device for coal mines to solve the problems mentioned in the background art, such as severe pollution in mines easily causing sensor probe contamination, which increases detection costs, and the fixed installation position of existing sensor probes, which can only perform single-point detection and do not have comprehensive coverage.

[0006] This invention provides a seepage detection device for coal mines, including a detection box, an operating groove inside the detection box, multiple support cylinders fixedly connected to the bottom wall of the operating groove, a protective cylinder movably connected inside each support cylinder, a detection shell inside the protective cylinder, and a humidity sensor placed inside the detection shell. A lifting assembly is installed inside the support cylinder. The lifting assembly is connected to the detection shell and acts on the detection shell. The lifting assembly includes a sealing plate. The bottom of the sealing plate is fixedly connected to the top of the support cylinder. A rotating handle is rotatably connected to the middle of the sealing plate through a bearing seat. An electric push rod is fixedly installed at the bottom of the rotating handle. A rotating plate is fixedly connected to the bottom output end of the electric push rod. There are two rotating plates. The protective cylinder is equipped with a lifting block, and a rotating rod is rotatably connected to the middle of the lifting block. The two ends of the rotating rod are fixedly connected to two rotating plates respectively, and the bottom wall of the rotating plate located below the rotating rod is fixedly connected to the top wall of the detection shell. The detection shell extends movably out of the protective cylinder.

[0007] Preferably, an alarm light and an alarm are fixedly installed on the top of the detection box, with the alarm light located to the side of the alarm.

[0008] Preferably, a display screen and multiple control buttons are fixedly installed on the outer wall of the testing box, with the control buttons located below the display screen.

[0009] Preferably, the top of the handle is provided with a groove, and a switch is fixedly installed in the groove.

[0010] Preferably, the inner wall of the protective cylinder is provided with a sliding groove, and a slider is fixedly connected to the outside of the lifting block, with the slider slidingly connected to the sliding groove.

[0011] Preferably, the support cylinder is equipped with multiple bolts on its exterior, and the protective cylinder has multiple threaded grooves on its exterior, which are adapted to the bolts.

[0012] Preferably, the inner sidewall of the detection shell is symmetrically fixed with buffer pads, which are made of elastic and deformable material, such as rubber pads, and the outer diameter of the detection shell is smaller than the inner diameter of the protective cylinder.

[0013] Preferably, a support rod is fixedly connected to the bottom of the detection shell, and a soil-breaking block is fixedly connected to the bottom of the support rod. The soil-breaking block is located at the bottom of the protective cylinder.

[0014] Preferably, the soil-breaking block is designed as a conical structure with the tip of the soil-breaking block pointing downwards, and the top diameter of the soil-breaking block is larger than the inner diameter of the protective cylinder, and a spiral soil-breaking groove is opened on the outer wall of the soil-breaking block.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention offers strong protection and adaptability to harsh environments. When not in operation, the detection housing and humidity sensor are housed within a protective cylinder, effectively isolating them from dust, water, gravel, and other impurities in coal mines. This prevents sensor failure due to physical impact or contamination, significantly improving the equipment's durability under complex working conditions. The lifting assembly, powered by an electric actuator and rotating with a handle, allows the detection housing to extend or retract flexibly, adapting to different directional detection needs. This facilitates accurate detection of suspected water seepage areas. Maintenance is convenient; the support cylinder, protective cylinder, and lifting assembly are relatively independent. If any component malfunctions, it can be disassembled and replaced individually without requiring a complete disassembly, simplifying maintenance and reducing repair costs.

[0016] This invention upgrades a single detection function into an integrated system of detection, early warning, interaction, and adjustment. It retains the original protection and flexibility, strengthens the safety early warning capability through the alarm module, improves operational stability through mechanical optimization, and simplifies the operation process through interactive components. It is more in line with the actual operation needs of coal mines, and its practicality and reliability are further enhanced.

[0017] While maintaining the original protective, stable, and early warning functions, this invention further breaks through the limitations of complex geological environments on detection, making seepage detection more in-depth and accurate. At the same time, it enhances the equipment's autonomous operation capability under harsh working conditions, significantly improving its practicality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall internal structure of the detection box of the present invention; Figure 3 This is a schematic diagram of the overall internal structure of the operating slot of the present invention; Figure 4 This is a schematic diagram of the overall structure of the support cylinder and protective cylinder of the present invention; Figure 5 This is a schematic diagram of the structure of the present invention when the detection shell extends outside the protective cylinder; Figure 6 This is a schematic cross-sectional view of the support cylinder and protective cylinder of the present invention; Figure 7 This is a front view of the internal structure of the support cylinder of the present invention; Figure 8 This is a schematic diagram of the connection structure between the detection shell and the humidity sensor of the present invention.

[0019] In the diagram: 100, detection box; 101, operation slot; 102, alarm light; 103, alarm; 104, display screen; 105, control keys; 200. Support cylinder; 300. Protective casing; 301. Slide groove; 400. Lifting assembly; 410. Sealing plate; 420. Rotary handle; 421. Groove; 422. Switch; 430. Electric actuator; 440. Rotating plate; 450. Lifting block; 460. Rotating rod; 470. Slider; 500, Detection housing; 501, Buffer pad; 600, humidity sensor; 700, support rod; 800, soil breaking block. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] This invention discloses a seepage detection device for coal mines, such as... Figures 1-8 As shown, the device includes a detection box 100, an operation slot 101 is provided inside the detection box 100, a plurality of support cylinders 200 are fixedly connected to the bottom wall of the operation slot 101, a protective cylinder 300 is movably connected inside each support cylinder 200, a detection shell 500 is provided inside the protective cylinder 300, and a humidity sensor 600 is placed inside the detection shell 500. It should be noted that a lifting assembly 400 is provided inside the support cylinder 200. The lifting assembly 400 is connected to the detection housing 500. The lifting assembly 400 includes a sealing plate 410. The bottom of the sealing plate 410 is fixedly connected to the top of the support cylinder 200. A rotating handle 420 is rotatably connected to the middle of the sealing plate 410 through a bearing seat. An electric push rod 430 is fixedly installed at the bottom of the rotating handle 420. A rotating plate 440 is fixedly connected to the bottom output end of the electric push rod 430. There are two rotating plates 440. It should be noted that a lifting block 450 is provided inside the protective cylinder 300. A rotating rod 460 is rotatably connected to the middle of the lifting block 450. The two ends of the rotating rod 460 are fixedly connected to two rotating plates 440 respectively. The bottom wall of the rotating plate 440 located below the rotating rod 460 is fixedly connected to the top wall of the detection shell 500. The detection shell 500 extends movably out of the protective cylinder 300.

[0022] This invention utilizes the mechanical linkage and power output of the lifting assembly 400 to drive the detection shell 500 and the internal humidity sensor 600 to rise and fall, thereby flexibly adjusting the detection position to accurately capture water seepage signals in the coal mine environment. The working principle of the above technical solution is as follows: When the device is not activated, the detection shell 500 and the internal humidity sensor 600 are located inside the protective cylinder 300, which is nested within the support cylinder 200. In this state, the protective cylinder 300 can isolate dust, gravel, and other impurities in the coal mine, preventing the humidity sensor 600 from failing due to physical impact or contamination, while simultaneously keeping the humidity sensor 600 in a position to be detected. In its initial state, when water seepage detection is required, the detection housing 500 and humidity sensor 600 are pushed out of the protective cylinder 300 through the power output and mechanical transmission of the lifting assembly 400. The specific steps are as follows: After receiving the start signal, the output end of the electric actuator 430 extends downward. The top of the electric actuator 430 is fixed to the bottom of the rotating handle 420, and the rotating handle 420 is rotatably connected to the sealing plate 410 through the bearing seat. This structure ensures that the electric actuator 430 can flexibly adjust its angle with the rotating handle 420 when outputting power to adapt to different detection direction requirements. The output end of the electric actuator 430 is pushed downward and fixedly connected to it. The bottom wall of the rotating plate 440 is directly fixed to the top wall of the detection shell 500. Simultaneously, the rotating plate 440 is linked to the lifting block 450 inside the protective cylinder 300 via the rotating rod 460. Under the continuous thrust of the electric actuator 430, the rotating plate 440 moves the detection shell 500 downwards, while the rotating rod 460 pushes the lifting block 450 to slide down the inner wall of the protective cylinder 300, ensuring stable and non-deviation-free movement of the detection shell 500. Ultimately, the detection shell 500 extends from the bottom of the protective cylinder 300 to the outside, contacting the coal mine area to be inspected. After the detection shell 500 extends, its internal humidity sensor 600 directly contacts or senses... The humidity sensor 600 will convert the detection signal into an electrical signal and transmit it if there is water seepage or excessive humidity in the area to be detected. This enables real-time monitoring and early warning of water seepage. After the detection is completed, the output end of the electric actuator 430 retracts upward, and the detection shell 500 and lifting block 450 are pulled in the opposite direction through the rotating plate 440 and the rotating rod 460, so that the detection shell 500 retracts back into the protective cylinder 300, restoring the initial protective state and waiting for the next detection command. The entire device not only realizes the flexible detection of water seepage in coal mines, but also ensures the service life of the humidity sensor 600 in the harsh underground environment through the protective cylinder 300.

[0023] This invention offers strong protection and adaptability to harsh environments. When not in operation, the detection housing 500 and humidity sensor 600 are housed within the protective cylinder 300, effectively isolating them from dust, water, gravel, and other impurities in the coal mine. This prevents sensor failure due to physical impact or contamination, significantly improving the equipment's durability under complex working conditions. The lifting assembly 400 is powered by the electric actuator 430, and in conjunction with the rotation function of the handle 420, it can drive the detection housing 500 to extend or retract flexibly, adapting to detection needs in different directions. This facilitates accurate detection of suspected water seepage areas. Maintenance is convenient; components such as the support cylinder 200, protective cylinder 300, and lifting assembly 400 are relatively independent. If any component malfunctions, it can be disassembled and replaced individually without requiring a complete disassembly device, simplifying the later maintenance process and reducing repair costs.

[0024] like Figures 1-6 As shown, in a specific embodiment: an alarm light 102 and an alarm 103 are fixedly installed on the top of the detection box 100, and the alarm light 102 is located on the side of the alarm 103.

[0025] Furthermore, when the humidity sensor 600 detects water seepage or excessive humidity, the control system can trigger the alarm light 102 to flash and the alarm 103 to sound, providing a dual reminder to the underground workers to take timely action. This is especially suitable for the noisy and complex lighting environment in coal mines, making the early warning more direct and efficient.

[0026] It should be noted that a display screen 104 and multiple control keys 105 are fixedly installed on the outer wall of the testing box 100, with the control keys 105 located below the display screen 104.

[0027] Furthermore, the display screen 104 can display the current detected humidity value and the equipment operating status in real time, such as whether the sensor is extended and fault information. The control key 105 is used for manual operation of the equipment, such as starting / stopping detection, adjusting the lifting height, setting the humidity threshold, etc., realizing human-machine interaction visualization and making operation more intuitive and convenient.

[0028] It should be noted that the top of the handle 420 is provided with a groove 421, and a switch 422 is fixedly installed in the groove 421.

[0029] In addition, a sliding groove 301 is provided on the inner wall of the protective cylinder 300, and a slider 470 is fixedly connected to the outside of the lifting block 450. The slider 470 is slidably connected to the sliding groove 301.

[0030] Furthermore, the sliding groove 301 on the inner wall of the protective cylinder 300 forms a sliding engagement with the slider 470 on the outside of the lifting block 450, which restricts the movement trajectory of the lifting block 450, making the detection shell 500 more stable during the lifting process, avoiding sensor detection errors caused by shaking, and reducing frictional wear between components.

[0031] Specifically, the support cylinder 200 has multiple bolts installed on its exterior, and the protective cylinder 300 has multiple threaded grooves on its exterior, which are compatible with the bolts.

[0032] Furthermore, the bolts on the outside of the support cylinder 200 are threaded to the threaded grooves on the outside of the protective cylinder 300. The relative positions of the protective cylinder 200 and the support cylinder 300 can be fixed by rotating the bolts, which facilitates quick disassembly and assembly of the two and makes it easier to replace parts.

[0033] It should be noted that buffer pads 501 are symmetrically fixedly connected to the inner wall of the detection shell 500. The buffer pads 501 are made of elastic and deformable material, such as rubber pads. The outer diameter of the detection shell 500 is smaller than the inner diameter of the protective cylinder 300.

[0034] Furthermore, the elastic buffer pad 501 inside the detection shell 500 can absorb the slight vibration of the humidity sensor 600 during operation, while avoiding direct rigid contact between the humidity sensor 600 and the inner wall of the detection shell 500, reducing collision damage. The diameter of the detection shell 500 is smaller than the inner diameter of the protective cylinder 300, leaving space for the lifting and lowering of the detection shell 500, avoiding jamming during movement, and ensuring smooth extension and retraction.

[0035] This invention upgrades a single detection function into an integrated system of detection, early warning, interaction, and adjustment. It retains the original protection and flexibility, strengthens the safety early warning capability through the alarm module, improves operational stability through mechanical optimization, and simplifies the operation process through interactive components. It is more in line with the actual operation needs of coal mines, and its practicality and reliability are further enhanced.

[0036] like Figure 8 As shown, in a specific embodiment: a support rod 700 is fixedly connected to the bottom of the detection shell 500, and a soil-breaking block 800 is fixedly connected to the bottom of the support rod 700. The soil-breaking block 800 is located at the bottom of the protective cylinder 300.

[0037] It should be noted that the soil-breaking block 800 is designed with a conical structure, with the tip of the soil-breaking block 800 pointing downwards, and the top diameter of the soil-breaking block 800 is larger than the inner diameter of the protective cylinder 300. The outer wall of the soil-breaking block 800 has a spiral soil-breaking groove, and the top diameter of the soil-breaking block 800 is larger than the inner diameter of the protective cylinder 300. When the detection shell 500 retracts into the protective cylinder 300, the soil-breaking block 800 will naturally fit against the bottom of the protective cylinder 300, forming a physical barrier to prevent external dust and gravel from entering the interior of the protective cylinder 300, further strengthening the protection of the detection shell 500 and the humidity sensor 600. At the same time, the conical structure can play a guiding role during the lifting and lowering process, reducing the friction and jamming between the detection shell 500 and the inner wall of the protective cylinder 300.

[0038] The working principle of the above technical solution is as follows: During use, the soil-breaking block 800 adopts a conical structure with the tip pointing downwards. Combined with the spiral soil-breaking groove on the outer wall, it can easily penetrate the surface of coal seams, rock strata, or loose deposits in the coal mine during the descent of the detection shell 500. This allows the humidity sensor 600 to directly contact areas where water may seep in deep layers, avoiding detection omissions caused by the surface dry layer covering the area. It is especially suitable for detecting hidden water seepage points such as coal seam fissures and roadway wall depressions. The spiral soil-breaking groove design not only reduces soil-breaking resistance but also generates axial propulsion force when combined with the rotation function of the handle 420. This assists the electric actuator 430 in driving the detection shell 500 deeper into the area to be detected, saving power consumption while improving the accuracy of the detection position. It is especially suitable for detection operations on the surface of hard coal seams or rock strata.

[0039] While maintaining the original protective, stable, and early warning functions, this invention further breaks through the limitations of complex geological environments on detection, making seepage detection more in-depth and accurate. At the same time, it enhances the equipment's autonomous operation capability under harsh working conditions, significantly improving its practicality.

[0040] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A seepage detection device for coal mines, characterized in that, The device includes a detection box (100), an operation slot (101) is provided inside the detection box (100), a plurality of support cylinders (200) are fixedly connected to the bottom wall of the operation slot (101), a protective cylinder (300) is movably connected inside each support cylinder (200), a detection shell (500) is provided inside the protective cylinder (300), and a humidity sensor (600) is placed inside the detection shell (500). A lifting assembly (400) is provided inside the support cylinder (200). The lifting assembly (400) is connected to the detection shell (500). The lifting assembly (400) includes a sealing plate (410). The bottom of the sealing plate (410) is fixedly connected to the top of the support cylinder (200). A rotating handle (420) is rotatably connected to the middle of the sealing plate (410) through a bearing seat. An electric push rod (430) is fixedly installed at the bottom of the rotating handle (420). A rotating plate (440) is fixedly connected to the bottom output end of the electric push rod (430). There are two rotating plates (440). The protective cylinder (300) is provided with a lifting block (450), and a rotating rod (460) is rotatably connected to the middle of the lifting block (450). The two ends of the rotating rod (460) are fixedly connected to two rotating plates (440), and the bottom wall of the rotating plate (440) located below the rotating rod (460) is fixedly connected to the top wall of the detection shell (500). The detection shell (500) extends movably out of the protective cylinder (300).

2. The seepage detection device for coal mines according to claim 1, characterized in that: The detection box (100) is fixedly installed with an alarm light (102) and an alarm (103) on the top, and the alarm light (102) is located on the side of the alarm (103).

3. The seepage detection device for coal mines according to claim 1, characterized in that: The outer wall of the testing box (100) is fixedly equipped with a display screen (104) and multiple control keys (105), with the control keys (105) located below the display screen (104).

4. The seepage detection device for coal mines according to claim 1, characterized in that: Each of the rotating handles (420) has a groove (421) on its top, and a switch (422) is fixedly installed in the groove (421).

5. A seepage detection device for coal mines according to claim 1, characterized in that: The inner wall of the protective cylinder (300) is provided with a sliding groove (301), and the lifting block (450) is fixedly connected to a slider (470) on the outside. The slider (470) is slidably connected to the sliding groove (301).

6. A seepage detection device for coal mines according to claim 1, characterized in that: The support cylinder (200) is equipped with multiple bolts on its exterior, and the protective cylinder (300) has multiple threaded grooves on its exterior, which are adapted to the bolts.

7. A seepage detection device for coal mines according to claim 1, characterized in that: The inner wall of the detection shell (500) is symmetrically fixed with a buffer pad (501). The buffer pad (501) is made of an elastic and deformable material, which can be a rubber pad. The outer diameter of the detection shell (500) is smaller than the inner diameter of the protective cylinder (300).

8. A seepage detection device for coal mines according to claim 1, characterized in that: The bottom of the detection shell (500) is fixedly connected to a support rod (700), and the bottom of the support rod (700) is fixedly connected to a soil-breaking block (800), which is located at the bottom of the protective cylinder (300).

9. A seepage detection device for coal mines according to claim 8, characterized in that: The soil-breaking block (800) is configured as a conical structure with the tip of the soil-breaking block (800) pointing downwards, and the top diameter of the soil-breaking block (800) is larger than the inner diameter of the protective cylinder (300). A spiral soil-breaking groove is opened on the outer wall of the soil-breaking block (800).

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