A deep sampling device for coal mine geological survey

Abstract

The application provides a deep sampling device for coal mine geological survey, and belongs to the field of geological survey.The deep sampling device comprises a portal frame, a drilling assembly, a cylinder, an activity plate, a sleeve, a drill bit and a motor.The two ends of the installation plate are rotatably connected to the inner side of the portal frame.A cylinder is fixedly arranged on the installation plate.The output end of the cylinder is fixedly arranged on the activity plate.The sleeve is rotatably connected through the activity plate.The sleeve is fixedly arranged through the top of the drill bit.The motor is fixedly arranged on the activity plate.The automatic drilling sampling is realized by the drilling assembly, so that the manpower is saved and the precision is improved.The sample is taken out and the drill bit is maintained by the inclination assembly.The sample is automatically pushed out by the sample pushing assembly, so that the manpower is saved and the integrity is ensured.The safety is improved by the cleaning and protection assembly, so that the residues are avoided.The service life of the drill bit is prolonged by the cooling assembly.The detection precision is ensured by the air blowing assembly, so that the manual cleaning is reduced.

Description

Technical Field

[0001] This invention relates to the field of geological exploration technology, and in particular to a deep sampling device for coal mine geological exploration. Background Technology

[0002] Coal, as an important energy resource, has undergone a long geological evolution process. During the Mesozoic era of geological history, a large number of trees were buried by layers of soil. Under the long-term influence of complex environmental factors such as high temperature, high pressure, and microbial activity underground, they gradually evolved into coal. In the field of coal exploration, accurately grasping the distribution and characteristics of coal mines is a key prerequisite for subsequent mining work. Exploration personnel first need to use professional geological knowledge and technical means to deeply analyze whether there are Jurassic or Carboniferous terrestrial coal-bearing strata in a specific area, because these two geological periods are important periods for coal formation, and the coal-bearing strata formed there often contain rich coal resources. Once it is determined that there are coal-bearing strata in the target area, exploration personnel will select suitable locations on the surface and use professional drilling equipment to drill exploratory wells. These exploratory wells are like "eyes" deep underground. By taking rock cores from the exploratory wells, exploration personnel can directly observe key information such as the depth, location, and thickness of the coal seam, and then assess whether the coal seam has mining value. In the process of coal mining, in order to ensure the safety and efficiency of mining operations and to keep abreast of dynamic changes in coal seam quality and geological structure, frequent sampling and testing are required inside the coal mine roadways. This sampling and testing data provides important scientific basis for safe coal production and the rational planning of mining schemes.

[0003] In the existing technological system, for borehole sampling operations in fields such as geological exploration, materials analysis, and environmental monitoring, most sampling devices still rely on traditional handheld fixing methods. Operators need to manually support the device to maintain its stability, which is not only physically demanding and has low operational accuracy, but also prone to device displacement due to hand fatigue during long-term operations, affecting the sampling quality. A more prominent problem is that the drilled samples often remain inside the drill bit due to adhesion, structural jamming, or design defects in the drill bit's inner diameter. Traditional tools (such as wires and tweezers) are difficult to use efficiently to remove the samples, reducing sampling efficiency and sample integrity. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a deep sampling device for coal mine geological exploration.

[0005] An embodiment of the present invention provides a deep sampling device for coal mine geological exploration, comprising: Gantry frame; A sample pushing assembly, comprising a top plate, a push tube, a push plate, and a guide plate, wherein the push tube is fixedly installed through the top plate, the push plate is rotatably connected to the bottom of the push tube, and the guide plate is fixedly installed on the gantry frame; The tilting assembly includes two rotating columns. Slide grooves are provided through both sides of the gantry frame. An arc-shaped groove is provided through the upper end of the slide groove. The two rotating columns are respectively movably arranged in the slide grooves on both sides. A drilling assembly for drilling and sampling.

[0006] Furthermore, the drilling assembly includes a mounting plate, a movable plate, a sleeve, a drill bit, and a motor. Both ends of the mounting plate are rotatably connected to the inner side of the gantry frame. A cylinder is fixedly mounted on the mounting plate, and the output end of the cylinder is fixedly mounted on the movable plate. The sleeve is rotatably connected through the movable plate and is fixedly mounted through the top of the drill bit. The motor is fixedly mounted on the movable plate, and gears are fixedly mounted on both the output end of the motor and the drill bit.

[0007] Furthermore, the two rotating columns are respectively fixedly installed at both ends of the movable plate, the push tube is movably installed through the mounting plate and the sleeve, and the two gears are meshed and connected.

[0008] Furthermore, the top plate is provided with an installation groove, and a roller is rotatably installed in the installation groove. The guide plate is arc-shaped, and the roller abuts against the guide plate. Support rods are fixedly installed on both sides of the guide plate, and the support rods are fixedly installed on the gantry frame.

[0009] Furthermore, it also includes a cleaning and protection component, which includes a protective cover and a brush. A guide rod is fixedly installed on the protective cover. The guide rod slides through the mounting plate and the movable plate. The top of the guide rod is fixedly installed at the bottom of the top plate. A through hole is provided through the protective cover. The drill bit passes through the through hole and is abutted against it. The brush is fixedly installed on the push tube.

[0010] Furthermore, it also includes a cooling component, which includes a piston cylinder, a movable plug, and a water outlet pipe. The piston cylinder is fixedly installed through a movable plate and slidably installed through a mounting plate. The movable plug is slidably installed inside the piston cylinder. The water outlet pipe is fixedly installed through the movable plug and slidably installed through the bottom of the piston cylinder. A first one-way valve is fixedly connected to the upper end of the water outlet pipe. The water outlet pipe is fixedly installed through one side of a protective cover. A second one-way valve is installed through the upper end of the piston cylinder.

[0011] Furthermore, a water pumping pipe is fixedly connected to the outer end of the second one-way valve, a water tank is fixedly installed on one side of the gantry frame, a water inlet is provided through the water tank, and the other end of the water pumping pipe is fixedly installed through the water tank.

[0012] Furthermore, it also includes an air blowing assembly, which includes a delivery pipe and multiple high-pressure nozzles. A third one-way valve and a fourth one-way valve are provided through the bottom end of the piston cylinder. The delivery pipe is fixedly connected to the outer end of the fourth one-way valve. The other end of the delivery pipe is fixedly connected to the upper end of the push pipe. The multiple high-pressure nozzles are all fixedly provided through the lower end of the push pipe.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. A drilling assembly is installed. The motor drives the drill bit through two gears, and the cylinder pushes the movable plate and drill bit downward to complete the automatic drilling and sampling. This saves manpower, significantly improves sampling accuracy, ensures accurate and reliable results, and enhances work efficiency and quality.

[0014] 2. An inclined component is incorporated. Once it moves upward into the arc-shaped groove, it follows the groove's trajectory, thus driving the drill bit forward. This facilitates the removal of samples from the drill bit and its cleaning and maintenance, increasing its practicality.

[0015] 3. A sample ejection assembly is installed. When the drill bit rotates forward, the guide plate squeezes the rollers, causing the top plate to move downward. The top plate then pushes the push plate downward through the push tube, thereby automatically ejecting the sample from the drill bit. This achieves automatic sample retrieval, eliminating the need for manual labor, saving manpower, and ensuring sample integrity.

[0016] 4. A cleaning and protection component is installed. During sampling, the protective cover can cover the drill hole of the drill bit to prevent debris from flying and dust from spreading, thus improving safety. When the drill bit moves up and down, the brush can clean its inner wall to avoid residues affecting subsequent sampling.

[0017] 5. A cooling system is installed. During drilling and sampling, the cylinder drives the drill bit and piston cylinder downwards, moving the movable plug to the upper end of the piston cylinder. This forces water from inside the piston cylinder through the outlet pipe into the protective cover, cooling the drilling area. Automatic cooling prevents the drill bit from being damaged by high temperatures, extends its service life, and reduces replacement costs.

[0018] 6. An air-blowing assembly is installed. When the sample is ejected, the top plate, through the protective cover and water outlet pipe, moves the movable plug down to the lower end of the piston cylinder, compressing the gas inside the piston cylinder into the delivery pipe, and finally ejecting it through the high-pressure nozzle. This efficiently blows away dust from the inner wall of the drill bit, further cleaning the dust and preventing it from sticking and affecting the test results of the next sampling, ensuring the accuracy of the test, while reducing the trouble of manual cleaning and improving work efficiency.

[0019] In summary, this invention achieves automatic drilling and sampling through the drilling component, saving manpower and improving accuracy; the tilting component facilitates sample removal and drill bit maintenance; the sample pushing component automatically pushes out the sample, saving manpower and ensuring integrity; the cleaning and protection component enhances safety and avoids residue; the cooling component extends drill bit life; and the air blowing component ensures accurate detection and reduces manual cleaning. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of a deep sampling device for coal mine geological exploration during sampling, as described in an embodiment of the present invention.

[0021] Figure 2 This is a three-dimensional schematic diagram of a deep sampling device for coal mine geological exploration after sampling, as described in an embodiment of the present invention.

[0022] Figure 3 This is a three-dimensional schematic diagram of the drilling component in a deep sampling device for coal mine geological exploration as described in an embodiment of the present invention.

[0023] Figure 4 This is a cross-sectional view of the drill bit in a deep sampling device for coal mine geological exploration as described in an embodiment of the present invention.

[0024] Figure 5 This is a partial three-dimensional schematic diagram of a deep sampling device for coal mine geological exploration as described in an embodiment of the present invention.

[0025] Figure 6 This is a deep sampling device for coal mine geological exploration as described in this embodiment of the invention. Figure 4 Enlarged view of point A in the middle.

[0026] Figure 7 This is a three-dimensional schematic diagram of a deep sampling device for coal mine geological exploration being used to push out a sample, as described in an embodiment of the present invention.

[0027] Figure 8 This is a cross-sectional view of the piston cylinder in a deep sampling device for coal mine geological exploration as described in an embodiment of the present invention.

[0028] In the above attached figures: 1 Gantry frame, 2 Drilling assembly, 21 Mounting plate, 22 Cylinder, 23 Movable plate, 24 Sleeve, 25 Drill bit, 26 Motor, 27 Gear, 3 Inclined assembly, 31 Rotating column, 32 Slide groove, 33 Arc groove, 4 Pushing assembly, 41 Top plate, 42 Push pipe, 43 Push plate, 44 Roller, 45 Guide plate, 46 Support rod, 5 Cleaning and protection assembly, 51 Guide rod, 52 Protective cover, 53 Through hole, 54 Brush, 6 Cooling assembly, 61 Piston cylinder, 62 Movable plug, 63 Water outlet pipe, 64 First one-way valve, 65 Second one-way valve, 66 Pumping pipe, 67 Water tank, 7 Air blowing assembly, 71 Third one-way valve, 72 Fourth one-way valve, 73 Delivery pipe, 74 High-pressure nozzle. Detailed Implementation

[0029] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] like Figures 1-8 As shown in the figure, an embodiment of the present invention proposes a deep sampling device for coal mine geological exploration, comprising: Gantry 1 serves as a support.

[0031] Drilling assembly 2 includes a mounting plate 21, a movable plate 23, a sleeve 24, a drill bit 25, and a motor 26. Both ends of the mounting plate 21 are rotatably connected to the inner side of the gantry frame 1, allowing the mounting plate 21 to rotate. A cylinder 22 is fixedly mounted on the mounting plate 21, and the output end of the cylinder 22 is fixedly mounted on the movable plate 23, allowing the cylinder 22 to drive the movable plate 23 to move. The sleeve 24 rotatably connects to the movable plate 23 and is fixedly mounted through the top of the drill bit 25. The motor 26 is fixedly mounted on the movable plate 23, and gears 27 are fixedly mounted on both the output end of the motor 26 and the drill bit 25. The pull ring gears 27 mesh with each other, allowing the motor 26 to drive the drill bit 25 to rotate via the two gears 27.

[0032] The motor 26 drives the drill bit 25 to rotate via two gears 27, and the cylinder 22 drives the movable plate 23 to move down, which in turn drives the drill bit 25 to move down to achieve automatic drilling and sampling, saving manpower and improving accuracy.

[0033] The tilting component 3 is used to tilt the drill bit 25. The tilting component 3 includes a rotating column 31 rotatably connected to both ends of the movable plate 23. Both sides of the gantry 1 are provided with a sliding groove 32. The upper end of the sliding groove 32 is provided with an arc-shaped groove 33. The rotating column 31 is movably arranged through the sliding groove 32 on the same side, so that the rotating column 31 can move within the sliding groove 32 and the arc-shaped groove 33.

[0034] The rotating column 31 can be moved up and down in the slide groove 32 to take samples. After the rotating column 31 moves upward into the arc groove 33, it will move along the arc groove 33, thereby driving the mounting plate 21 and the movable plate 23 to rotate, so that the drill bit 25 rotates forward, which facilitates the removal of samples and cleaning and maintenance.

[0035] The sample ejection assembly 4 is used to eject samples. The assembly includes a top plate 41, a push tube 42, a push plate 43, and a guide plate 45. The top plate 41 and push tube 42 are fixedly installed through the top plate 41, allowing the top plate 41 to move the push tube 42. The push tube 42 is movably installed through the mounting plate 21 and the sleeve 24. The push plate 43 is rotatably connected to the bottom of the push tube 42 and is used to eject the sample. The guide plate 45 is fixedly installed on the gantry frame 1 and is arc-shaped. The guide plate 45 is used to press and push the top plate 41.

[0036] A mounting groove is provided on the top plate 41, and a roller 44 is rotatably mounted in the mounting groove. The roller 44 abuts against the guide plate 45, which reduces the friction between the roller 44 and the guide plate 45, allowing the guide plate 45 to push the top plate 41 more easily. Support rods 46 are fixedly mounted on both sides of the guide plate 45 and are fixedly mounted on the gantry frame 1. The support rods 46 are used to support the guide plate 45.

[0037] When the drill bit 25 rotates forward, the guide plate 45 will squeeze the roller 44, which will cause the top plate 41 to move down. The top plate 41 pushes the push plate 43 down through the push tube 42, which can push out and remove the sample inside the drill bit 25.

[0038] The system also includes a cleaning and protection component 5, which comprises a protective cover 52 and a brush 54. A guide rod 51 is fixedly mounted on the protective cover 52, sliding through the mounting plate 21 and the movable plate 23. The top of the guide rod 51 is fixedly mounted on the bottom of the top plate 41, providing guidance and support for the protective cover 52. The protective cover 52 covers the drill hole of the drill bit 25, preventing debris from splashing and dust from spreading, thus improving safety. A through hole 53 is provided through the protective cover 52, through which the drill bit 25 passes and abuts. This allows the protective cover 52 to scrape off impurities from the outer wall of the drill bit 25 during its up-and-down movement. The brush 54 is fixedly mounted on the push tube 42, abutting against the inner wall of the drill bit 25. This allows the brush 54 to clean the inner wall of the drill bit 25 during its up-and-down movement and to discharge dust from the bottom of the drill bit 25, preventing residue from affecting subsequent sampling.

[0039] It also includes a cooling component 6, which comprises a piston cylinder 61, a movable plug 62, and a water outlet pipe 63. The piston cylinder 61 is fixedly installed through the movable plate 23, allowing the movable plate 23 to move the piston cylinder 61. The piston cylinder 61 is slidably installed through the mounting plate 21. The movable plug 62 is slidably installed inside the piston cylinder 61, and the movable plug 62 is configured to cooperate with the piston cylinder 61.

[0040] The water outlet pipe 63 is fixedly installed through the movable plug 62 and slides through the bottom of the piston cylinder 61, and is sealed to prevent gas from escaping from the gap between the water outlet pipe 63 and the piston cylinder 61. A first one-way valve 64 is fixedly connected to the upper end of the water outlet pipe 63. The first one-way valve 64 allows fluid to flow from the piston cylinder 61 into the water outlet pipe 63, preventing backflow. The water outlet pipe 63 is fixedly installed through one side of the protective cover 52. A second one-way valve 65 is installed through the upper end of the piston cylinder 61. The second one-way valve 65 allows fluid to flow from the suction pipe 66 into the piston cylinder 61, preventing backflow.

[0041] The outer end of the second one-way valve 65 is fixedly connected to a water pumping pipe 66. A water tank 67 is fixedly installed on one side of the gantry frame 1. A water inlet is provided through the water tank 67 for injecting water into the water tank 67. The other end of the water pumping pipe 66 is fixedly installed through the water tank 67, so that the water pumping pipe 66 can pump the water in the water tank 67 into the piston cylinder 61.

[0042] When the sample is pushed out of the drill bit 25, the top plate 41 pushes the protective cover 52 down through the guide rod 51. The protective cover 52 pulls the movable plug 62 to the lower end of the piston cylinder 61 through the water pipe 63, and then draws the water in the water tank 67 into the piston cylinder 61 through the water pipe 66. During drilling and sampling, cylinder 22 drives movable plate 23 and drill bit 25 to move down, which in turn drives piston cylinder 61 to move down, so that movable plug 62 moves to the upper end of piston cylinder 61, squeezing water through water outlet pipe 63 into protective cover 52 to cool the drill hole of drill bit 25 and extend the service life of drill bit 25.

[0043] The system also includes an air blowing assembly 7, which comprises a delivery pipe 73 and multiple high-pressure nozzles 74. A third one-way valve 71 and a fourth one-way valve 72 are installed through the bottom end of the piston cylinder 61. The third one-way valve 71 allows fluid to flow from outside the piston cylinder 61 into the piston cylinder 61, preventing backflow. The delivery pipe 73 is fixedly connected to the outer end of the fourth one-way valve 72, which also allows fluid to flow from inside the piston cylinder 61 into the delivery pipe 73, preventing backflow. The other end of the delivery pipe 73 is fixedly connected to the upper end of the push pipe 42, allowing the delivery pipe 73 to lift and deliver fluid into the push pipe 42. Multiple high-pressure nozzles 74 are fixedly installed through the lower end of the push pipe 42, pressurizing the gas in the push pipe 42 to form high-pressure gas before ejecting it.

[0044] During drilling and sampling, cylinder 22 will drive piston cylinder 61 to move downward, causing movable plug 62 to move to the upper end of piston cylinder 61, and then drawing external air into piston cylinder 61 through third one-way valve 71. When the sample is ejected, the top plate 41 pulls the movable plug 62 down to the lower end of the piston cylinder 61 through the protective cover 52 and the water outlet pipe 63, thereby squeezing the gas in the piston cylinder 61 into the delivery pipe 73, and finally spraying it out through the high-pressure nozzle 74 to blow away the inner wall of the drill bit 25 and prevent dust from sticking to the inner wall of the drill bit 25.

[0045] The detailed working process of this invention is as follows: 1. During sampling, the motor 26 drives the drill bit 25 to rotate through two gears 27. At the same time, the cylinder 22 drives the movable plate 23 to move downward, and the movable plate 23 drives the drill bit 25 to move downward to drill and sample the coal mine surface. During the sampling process, the protective cover 52 can cover the drill hole of the drill bit 25 to prevent debris from flying and dust from spreading. 2. At the same time, the movable plate 23 can drive the piston cylinder 61 to move downward, so that the movable plug 62 moves to the upper end of the piston cylinder 61, thereby squeezing the water in the piston cylinder 61 into the protective cover 52 through the water outlet pipe 63, cooling the drilling part of the drill bit 25 and extending the service life of the drill bit 25. 3. At the same time, as the piston cylinder 61 moves downward, the movable plug 62 moves to the upper end of the piston cylinder 61, thereby drawing external air into the piston cylinder 61 through the third one-way valve 71, in preparation for subsequent purging work.

[0046] 4. After sampling is completed, the cylinder 22 drives the movable plate 23 and the drill bit 25 to move upward and retract. At this time, the sample in the drill bit 25 can push the push plate 43 upward, and then lift the top plate 41 upward through the push tube 42. Subsequently, when the rotating column 31 moves upward into the arc groove 33, the rotating column 31 will move along the arc groove 33, thereby driving the movable plate 23 to rotate forward, and thus driving the mounting plate 21 to rotate in the same direction through the cylinder 22, and at the same time driving the drill bit 25 to rotate forward. 5. During the forward rotation of the movable plate 23, the guide plate 45 can squeeze the roller 44, thereby squeezing and pushing the top plate 41 downward. The top plate 41 squeezes and pushes the push plate 43 downward through the push tube 42, thereby pushing the sample in the drill bit 25 outward and taking it out. 6. At the same time, during the sample ejection process, the top plate 41 will push the protective cover 52 downward through the guide rod 51. The protective cover 52 will pull the movable plug 62 downward to the lower end of the piston cylinder 61 through the water outlet pipe 63. Then, the water in the water tank 67 will be drawn into the piston cylinder 61 through the water pumping pipe 66 to prepare for the cooling work of the next sampling. 7. At the same time, as the piston cylinder 61 moves downward, it will squeeze the gas inside the piston cylinder 61 into the delivery pipe 73, and finally spray high-pressure gas through the high-pressure nozzle 74 to blow away the inner wall of the drill bit 25, so as to prevent dust from sticking to the inner wall of the drill bit 25.

[0047] 8. Finally, the cylinder 22 drives the movable plate 23 to move down, so that the rotating column 31 moves into the slide groove 32, and the drilling and sampling work can be carried out again.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A deep sampling device for coal mine geological exploration, characterized in that, include: Gantry frame (1); The sample pushing assembly (4) includes a top plate (41), a push tube (42), a push plate (43) and a guide plate (45). The push tube (42) is fixedly installed through the top plate (41). The push plate (43) is rotatably connected to the bottom of the push tube (42). The guide plate (45) is fixedly installed on the gantry frame (1). Inclined assembly (3), the inclined assembly (3) includes two rotating columns (31), and sliding grooves (32) are provided through both sides of the gantry frame (1). An arc groove (33) is provided through the upper end of the sliding groove (32). The two rotating columns (31) are respectively movably arranged in the sliding grooves (32) on both sides. Drilling component (2), which is used for drilling and sampling.

2. The deep sampling device for coal mine geological exploration according to claim 1, characterized in that, in: The drilling assembly (2) includes a mounting plate (21), a movable plate (23), a sleeve (24), a drill bit (25), and a motor (26). Both ends of the mounting plate (21) are rotatably connected to the inner side of the gantry frame (1). A cylinder (22) is fixedly installed on the mounting plate (21). The output end of the cylinder (22) is fixedly installed on the movable plate (23). The sleeve (24) is rotatably connected through the movable plate (23). The sleeve (24) is fixedly installed through the top of the drill bit (25). The motor (26) is fixedly installed on the movable plate (23). Gears (27) are fixedly installed on both the output end of the motor (26) and the drill bit (25).

3. A deep sampling device for coal mine geological exploration according to claim 2, characterized in that, in: The two rotating columns (31) are fixedly installed at both ends of the movable plate (23), the push tube (42) is movably installed through the mounting plate (21) and the sleeve (24), and the two gears (27) are meshed and connected.

4. A deep sampling device for coal mine geological exploration according to claim 1, characterized in that, in: The top plate (41) is provided with an installation groove, and a roller (44) is rotatably installed in the installation groove. The guide plate (45) is arc-shaped, and the roller (44) abuts against the guide plate (45). Support rods (46) are fixedly installed on both sides of the guide plate (45), and the support rods (46) are fixedly installed on the gantry frame (1).

5. A deep sampling device for coal mine geological exploration according to claim 2, characterized in that, in: It also includes a cleaning and protection component (5), which includes a protective cover (52) and a brush (54). A guide rod (51) is fixedly installed on the protective cover (52). The guide rod (51) slides through the mounting plate (21) and the movable plate (23). The top of the guide rod (51) is fixedly installed at the bottom of the top plate (41). A through hole (53) is provided through the protective cover (52). The drill bit (25) passes through the through hole (53) and abuts against it. The brush (54) is fixedly installed on the push tube (42).

6. A deep sampling device for coal mine geological exploration according to claim 5, characterized in that, in: It also includes a cooling component (6), which includes a piston cylinder (61), a movable plug (62), and a water outlet pipe (63). The piston cylinder (61) is fixedly installed through the movable plate (23) and slidably installed through the mounting plate (21). The movable plug (62) is slidably installed inside the piston cylinder (61). The water outlet pipe (63) is fixedly installed through the movable plug (62) and slidably installed through the bottom of the piston cylinder (61). A first one-way valve (64) is fixedly connected to the upper end of the water outlet pipe (63). The water outlet pipe (63) is fixedly installed through one side of the protective cover (52). A second one-way valve (65) is installed through the upper end of the piston cylinder (61).

7. A deep sampling device for coal mine geological exploration according to claim 6, characterized in that, in: The outer end of the second one-way valve (65) is fixedly connected to a water pumping pipe (66), and a water tank (67) is fixedly installed on one side of the gantry frame (1). A water inlet is provided through the water tank (67), and the other end of the water pumping pipe (66) is fixedly installed through the water tank (67).

8. A deep sampling device for coal mine geological exploration according to claim 6, characterized in that, in: It also includes an air blowing assembly (7), which includes a delivery pipe (73) and multiple high-pressure nozzles (74). A third one-way valve (71) and a fourth one-way valve (72) are provided through the bottom end of the piston cylinder (61). The delivery pipe (73) is fixedly connected to the outer end of the fourth one-way valve (72). The other end of the delivery pipe (73) is fixedly connected to the upper end of the push pipe (42). The multiple high-pressure nozzles (74) are all fixedly provided through the lower end of the push pipe (42).

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