Coal seam water injection device for preventing impact ground pressure of coal mine

Abstract

The coal seam water injection device comprises a base, an adjusting pipe, an L-shaped plate and a square block, the adjusting pipe is installed at one end of the top of the base, a water storage tank is installed at the end, away from the adjusting pipe, of the top of the base, and a servo motor is installed at the bottom in the adjusting pipe; a threaded rod is installed at the output end of the servo motor, a threaded pipe is installed on the outer side of the threaded rod in a threaded mode, and a top plate is installed at the top of the threaded pipe. The connecting plate, the spring and the inserting rod are installed, when the water injection pipe is adjusted to the designated position, the connecting plate is pulled to move under the elastic action of the spring, the connecting plate drives the inserting rod to move together, the inserting rod can be inserted into the corresponding inserting hole in the square block, the square block is limited through the inserting rod, and the square block can be prevented from continuously rotating; the water injection pipe can be prevented from continuously rotating under the influence of external force in the water injection process, and the stability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of coal mining equipment, specifically a coal seam water injection device for preventing erosion and ground pressure in coal mines. Background Technology

[0002] Coal seam water injection refers to injecting pressurized water into the coal seam through boreholes before mining to pre-wet the coal body, which can reduce the amount of coal dust generated. By injecting water evenly into the coal body through a water injection device, outbursts can be prevented, and rock bursts can also be prevented.

[0003] The invention patent with announcement number CN114909133A discloses a coal seam water injection device for preventing erosion and ground pressure in coal mines. This patent uses a first cylinder and a second motor. When the water injection method needs to be adjusted, the first cylinder is opened to drive the rack to rise, which in turn drives the gear and the rotating shaft to rotate, and drives the U-shaped frame to rotate. After the water injection pump and water injection pipe are reset, water can be injected from the side of the coal seam. The two water injection methods can meet the needs of different situations and have a wide range of applications.

[0004] However, in the implementation of this patent, the water injection position of the water injection pipe is adjusted by rotating the water injection pump driven by the second motor. After the adjustment is completed, the water injection pump and water injection pipe are easily affected by external forces during the water injection process, which will affect the water injection process. At the same time, the overall height of the L-shaped fixed frame is relatively high, which makes it inconvenient for the device to move inside the mine tunnel. Therefore, there is an urgent need for a new type of coal seam water injection device for preventing ground pressure in coal mines to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a coal seam water injection device for preventing erosion and ground pressure in coal mines, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a coal seam water injection device for preventing scour and ground pressure in coal mines, comprising a base, an adjusting pipe, an L-shaped plate, and a square block. An adjusting pipe is installed at one end of the top of the base, and a water storage tank is installed at the end of the top of the base away from the adjusting pipe. A servo motor is installed at the bottom inside the adjusting pipe, and a threaded rod is installed at the output end of the servo motor. A threaded tube is threaded onto the outer side of the threaded rod, and a top plate is installed at the top of the threaded tube. An L-shaped plate is installed at the bottom of the top plate, and a bearing is installed at the top of the L-shaped plate. A rotating rod is installed inside the bearing. Furthermore, a square block is installed on the top of the rotating rod, and a second sliding component is installed on the top end of the square block away from the regulating pipe. A sliding plate is slidably installed on the top of the second sliding component, and a water injection pipe is installed on the end of the sliding plate away from the regulating pipe. An electric telescopic rod is installed on the top end of the square block near the regulating pipe, and the output end of the electric telescopic rod is connected to the sliding plate. A water pump is installed on the top of the water storage tank, and a control panel is installed on the top of the regulating pipe away from the water storage tank. The output end of the control panel is electrically connected to the output ends of the servo motor, the water pump, and the electric telescopic rod respectively through wires.

[0007] Preferably, the output end of the water pump is equipped with a water pumping pipe extending into the water storage tank, and the output end of the water pump is equipped with a flexible hose, the end of the flexible hose away from the water pump being connected to the water injection pipe.

[0008] Preferably, a sealing baffle is installed on the outside of the water injection pipe.

[0009] Preferably, both ends of the regulating tube are equipped with a first sliding component, and a slider is slidably installed on the inner side of each first sliding component. The end of each slider away from the first sliding component is connected to a threaded tube.

[0010] Preferably, three sets of insertion holes are evenly arranged on the outer side of the square block.

[0011] Preferably, the L-shaped plate has a mounting hole at one end near the adjusting tube, and a rod is installed inside the mounting hole. A connecting plate is installed at one end of the rod near the adjusting tube.

[0012] Preferably, a spring is installed at the bottom of the connecting plate near the L-shaped plate, and the end of the spring away from the connecting plate is connected to the L-shaped plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The coal seam water injection device for preventing ground pressure in this coal mine is equipped with a square block, a rotating rod and a bearing. When in use, the rotating rod can rotate inside the bearing, and the rotating rod drives the square block to rotate together, which can drive the water injection pipe to rotate, and the water injection position of the water injection pipe can be adjusted.

[0015] 2. The coal seam water injection device for preventing ground pressure in coal mines is equipped with a connecting plate, a spring, and a plug rod. When the water injection pipe is adjusted to the designated position, the elasticity of the spring pulls the connecting plate to move. The connecting plate drives the plug rod to move together, allowing the plug rod to be inserted into the corresponding hole on the square block. By limiting the square block with the plug rod, the square block can be prevented from continuing to rotate. This prevents the water injection pipe from continuing to rotate due to external forces during the water injection process, which helps to improve the stability of the device.

[0016] 3. The coal seam water injection device for preventing erosion and ground pressure in this coal mine is equipped with an electric telescopic rod, a second sliding component and a sliding plate. During the water injection process, the electric telescopic rod pushes the sliding plate to move, so that the sliding plate drives the water injection pipe to move. Without the need for a moving device, the water injection pipe can be directly inserted into the coal body for water injection.

[0017] 4. The coal seam water injection device for preventing ground pressure in coal mines is equipped with a servo motor, a threaded rod, and a threaded pipe. During use, the servo motor drives the threaded rod to rotate clockwise or counterclockwise, which allows the threaded pipe to move upward or downward on the outside of the threaded rod through the thread. This moves the water injection pipe to the designated height position for water injection. After use, the threaded pipe can be completely stored inside the regulating pipe, reducing the overall height of the device and making it easier to move the device inside the mine tunnel. Attached Figure Description

[0018] Figure 1 This is a schematic front sectional view of the present invention;

[0019] Figure 2 This is a partial structural schematic diagram of the present invention;

[0020] Figure 3 This is a top sectional view of the square block of this utility model.

[0021] In the diagram: 1. Base; 2. Adjusting pipe; 3. Servo motor; 4. Threaded rod; 5. Slider; 6. Threaded tube; 7. Control panel; 8. First sliding assembly; 9. Top plate; 10. L-shaped plate; 11. Square block; 12. Water injection pipe; 13. Sealing baffle; 14. Hose; 15. Water pump; 16. Water pumping pipe; 17. Water storage tank; 18. Connecting plate; 19. Spring; 20. Mounting hole; 21. Insert rod; 22. Insertion hole; 23. Electric telescopic rod; 24. Second sliding assembly; 25. Sliding plate; 26. Rotating rod; 27. Bearing. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-3 This utility model provides an embodiment of a coal seam water injection device for preventing erosion and ground pressure in coal mines, comprising a base 1, an adjusting pipe 2, an L-shaped plate 10, and a square block 11. The adjusting pipe 2 is installed at one end of the top of the base 1, and a water storage tank 17 is installed at the end of the top of the base 1 away from the adjusting pipe 2. A servo motor 3 is installed at the bottom inside the adjusting pipe 2; the servo motor 3 can be of model MR-J2S-10A. A threaded rod 4 is installed at the output end of the servo motor 3, and a threaded pipe 6 is installed on the outer thread of the threaded rod 4. A top plate 9 is installed at the top, and an L-shaped plate 10 is installed at the bottom of the top plate 9. A bearing 27 is installed on the top of the L-shaped plate 10. A rotating rod 26 is installed inside the bearing 27, and a square block 11 is installed on the top of the rotating rod 26. A second sliding assembly 24 is installed at the top of the square block 11 away from the regulating pipe 2, and a sliding plate 25 is slidably installed on the top of the second sliding assembly 24. A water injection pipe 12 is installed at the end of the sliding plate 25 away from the regulating pipe 2, and a sealing baffle 13 is installed on the outside of the water injection pipe 12. The sealing baffle 13 is in contact with the coal body. When appropriate, the water injection holes on the coal body can be blocked by the sealing baffle 13 to prevent water from leaking out. An electric telescopic rod 23 is installed at the top of the square block 11 near the regulating pipe 2. The electric telescopic rod 23 can be model J64RT2UNIVER. The output end of the electric telescopic rod 23 is connected to the sliding plate 25. A water pump 15 is installed on the top of the water storage tank 17. The water pump 15 can be model ISGD. A water pump pipe 16 extending into the water storage tank 17 is installed at the output end of the water pump 15. The output end of the device is equipped with a flexible hose 14. The end of the flexible hose 14 away from the water pump 15 is connected to the water injection pipe 12. The water pump 15 draws clean water from the water storage tank 17 through the water pumping pipe 16 and draws water into the water injection pipe 12 through the flexible hose 14, so that the water is injected into the coal body through the water injection pipe 12, thus completing the water injection process. The top of the regulating pipe 2 away from the water storage tank 17 is equipped with a control panel 7. The output end of the control panel 7 is electrically connected to the output ends of the servo motor 3, the water pump 15 and the electric telescopic rod 23 through wires.

[0024] like Figure 1As shown, both ends of the regulating tube 2 are equipped with a first sliding component 8, and a slider 5 is slidably installed on the inner side of the first sliding component 8. The end of the slider 5 away from the first sliding component 8 is connected to the threaded tube 6. By limiting the threaded tube 6 with the slider 5, the threaded tube 6 can be prevented from rotating with the threaded rod 4.

[0025] like Figure 1-3 As shown, three sets of insertion holes 22 are evenly arranged on the outer side of the square block 11. The L-shaped plate 10 has a mounting hole 20 at the end near the regulating pipe 2, and a rod 21 is installed inside the mounting hole 20. A connecting plate 18 is installed at the end of the rod 21 near the regulating pipe 2. A spring 19 is installed at the bottom of the connecting plate 18 near the end of the L-shaped plate 10, and the end of the spring 19 away from the connecting plate 18 is connected to the L-shaped plate 10. When the water injection pipe 12 is adjusted to the designated position, the elasticity of the spring 19 pulls the connecting plate 18 to move. The connecting plate 18 drives the rod 21 to move together, so that the rod 21 can be inserted into the corresponding insertion hole 22 on the square block 11. By limiting the square block 11 with the rod 21, the square block 11 can be prevented from continuing to rotate, which can prevent the water injection pipe 12 from continuing to rotate due to external force during water injection, thus improving the stability of the device.

[0026] Working principle:

[0027] When using the device, connect it to the power supply and then add an appropriate amount of clean water into the water storage tank 17.

[0028] The staff can first start the servo motor 3 through the control panel 7, so that the servo motor 3 drives the threaded rod 4 to rotate clockwise or counterclockwise. The threaded tube 6 on the outside of the threaded rod 4 is limited by the slider 5, so that the threaded tube 6 cannot rotate with the threaded rod 4, so that the threaded tube 6 can only move upward or downward through the thread.

[0029] At this time, the threaded pipe 6 drives the slider 5 to slide along a straight line on the first sliding assembly 8, and the threaded pipe 6 drives the top plate 9 to move together, so that the top plate 9 drives the L-shaped plate 10 to move, which can adjust the height of the water injection pipe 12 and move the water injection pipe 12 to the specified height of the coal body position for water injection.

[0030] After the height adjustment is completed, the staff can first pull the connecting plate 18, which will stretch the spring 19 and move the connecting plate 18 together with the insertion rod 21. The insertion rod 21 can be removed from the insertion hole 22, thereby releasing the limitation of the insertion rod 21 on the square block 11 and allowing the square block 11 to rotate.

[0031] Then the staff can rotate the square block 11, which will drive the water injection pipe 12 to rotate together. The water injection position of the water injection pipe 12 can be adjusted so that the water injection pipe 12 can inject water into the coal body in front of the device or the coal body on both sides of the device.

[0032] After the rotation is completed, the staff releases the connecting plate 18. At this time, the elasticity of the spring 19 pulls the connecting plate 18 to move. The connecting plate 18 drives the insertion rod 21 to move together. The insertion rod 21 can be inserted into the corresponding insertion hole 22 on the square block 11. By limiting the square block 11 with the insertion rod 21, the square block 11 can be prevented from continuing to rotate. This prevents the water injection pipe 12 from continuing to rotate due to external force during the water injection process, which helps to improve the stability of the device.

[0033] During water injection, the staff can first activate the electric telescopic rod 23 through the control panel 7, so that the electric telescopic rod 23 pushes the sliding plate 25 to move, which in turn drives the water injection pipe 12 to move and insert the water injection pipe 12 into the water injection hole on the coal body, and make the sealing baffle 13 fit with the coal body.

[0034] Then, the staff can start the water pump 15 through the control panel 7. The water pump 15 draws out the clean water inside the water storage tank 17 through the water pumping pipe 16, and draws the water into the water injection pipe 12 through the hose 14, so that the water is injected into the coal body through the water injection pipe 12, thus completing the water injection process.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A coal seam water injection device for coal mine bump prevention, comprising a base (1), an adjusting pipe (2), an L-shaped plate (10) and a square block (11), characterized in that: The one end of the top of base (1) is equipped with the adjusting pipe (2), and the one end of the top of base (1) is equipped with the water storage tank (17) away from the adjusting pipe (2), the bottom of the inside of adjusting pipe (2) is equipped with the servo motor (3), and the output of servo motor (3) is equipped with the threaded rod (4), the outside of threaded rod (4) is equipped with the threaded pipe (6) in screw thread, the top of threaded pipe (6) is equipped with the top plate (9), the bottom of top plate (9) is equipped with the L-shaped plate (10), and the top of L-shaped plate (10) is equipped with the bearing (27), the inside of bearing (27) is equipped with the rotating rod (26), and the top of rotating rod (26) is equipped with the square block (11), the one end of the top of square block (11) is equipped with the second sliding assembly (24) away from the adjusting pipe (2), and the top of second sliding assembly (24) is equipped with the sliding plate (25) in sliding, the one end of sliding plate (25) is equipped with the water injection pipe (12) away from the adjusting pipe (2), the one end of the top of square block (11) is equipped with the electric telescopic rod (23) near the adjusting pipe (2), and the output of electric telescopic rod (23) is connected with sliding plate (25), the top of water storage tank (17) is equipped with the water pump (15), the top of the one end of adjusting pipe (2) is equipped with the control panel (7) away from the water storage tank (17), and the output of control panel (7) is electrically connected with the output of servo motor (3), water pump (15) and electric telescopic rod (23) through wires respectively.

2. The coal seam water injection device for rock burst prevention in coal mines according to claim 1, characterized in that: The output of water pump (15) is equipped with the water pumping pipe (16) extending to the inside of water storage tank (17), and the output of water pump (15) is equipped with the hose (14), and the one end of hose (14) is communicated with water injection pipe (12) away from water pump (15).

3. The coal seam water injection device for rock burst prevention in coal mines according to claim 1, characterized in that: The outside of water injection pipe (12) is equipped with the sealing baffle (13).

4. The coal seam water injection device for rock burst prevention in coal mines according to claim 1, characterized in that: The inside of both ends of adjusting pipe (2) is equipped with the first sliding assembly (8), and the inside of first sliding assembly (8) is equipped with the sliding block (5) in sliding, and the one end of sliding block (5) is connected with threaded pipe (6) away from first sliding assembly (8).

5. The coal seam water injection device for rock burst prevention in coal mines according to claim 1, characterized in that: The outside of square block (11) is uniformly provided with three groups of jack plug (22).

6. The coal seam water injection device for rock burst prevention in coal mines according to claim 1, characterized in that: The one end of L-shaped plate (10) is provided with mounting hole (20) near adjusting pipe (2), and the inside of mounting hole (20) is equipped with the insertion rod (21), and the one end of insertion rod (21) is equipped with the connecting plate (18) near adjusting pipe (2).

7. The coal seam water injection device for rock burst prevention in coal mines according to claim 6, characterized in that: The bottom of the one end of connecting plate (18) is equipped with spring (19) near L-shaped plate (10), and the one end of spring (19) is connected with L-shaped plate (10) away from connecting plate (18).

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