Coal mine drilling, grouting and hole sealing equipment
Through the hollow sleeve and sealing system of coal mine drilling grouting equipment, gas leakage and drill bit stability problems are solved, and effective sealing of drilling and employee safety is achieved.
Patent Information
- Application Number
- CN202420225960.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-30
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-01-30
AI Technical Summary
During the drilling process of coal mines, gas leakage is difficult to detect in a timely manner, resulting in safety hazards for employees. The existing technology cannot effectively prevent gas leakage and drilling equipment from being pulled and disengaged.
A coal mine drilling grouting and sealing equipment is designed, using a combination of hollow sleeves, sealing soft strips, one-way liquid guide pipes and liquid inlet holes. The grouting liquid is filled with drilling through the expansion of the grouting sealing tank and the downward pressure slide. , seal the gas and slowly pull out the drill bit to prevent direct gas leakage and the drill bit from being pulled away.
Effectively seal the drilling of coal seams, reduce gas leakage, improve the stability of drilling equipment, and avoid hazards from employees in gas environment.
Smart Images
Figure CN222296184U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of coal mine grouting and hole sealing, in particular to a coal mine drilling grouting and hole sealing device. Background Art
[0002] Coal mines refer to places rich in coal resources, which are generally divided into underground coal mines and open-pit coal mines. Before mining, the coal mine drilling construction team will survey the geography near the coal mine to determine the reserves of the coal mine. Grouting machinery mainly includes drilling rigs, drilling tools, grouting pumps, mixers, grouting pipeline assemblies, grouting plugs and mixers, etc. Drilling rigs and drilling tools are hole-forming equipment, while other equipment and tools such as grouting pumps and mixers are used to prepare and transport slurry.
[0003] A Chinese patent with publication number CN212027739U discloses a coal mine drilling grouting sealing device, including a fixed frame, a support frame is installed at the top of the fixed frame, fixed rods are installed on both sides of the top of the support frame, a motor frame is installed at the top of the fixed rod, a driving motor is installed inside the motor frame, the output shaft of the driving motor passes through the motor frame and is installed with a driving rod, the bottom end of the driving rod passes downward through the support frame and is installed with a material guide plate, and a material storage tank is opened inside the material guide plate. The utility model drives the material guide plate to rotate through the driving motor, so that the drill pipe can easily enter the leaking part in the mine cave, and then connect with the feed pipe through an external cement pump.
[0004] In the current existing technology, most coal mines will dig out gas in the coal interlayer when digging the mine. Since gas is a colorless and odorless gas, lighter than air, difficult to dissolve in water, does not support combustion and cannot sustain breathing, employees cannot detect gas leakage in time when digging gas. Gas leakage can only be discovered when it reaches a certain concentration, causing people to lack oxygen and suffocate, resulting in problems of harm to employees.
[0005] To this end, the utility model provides a coal mine drilling grouting and sealing device. Utility Model Content
[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.
[0007] The technical solution adopted by the utility model to solve its technical problems is: a coal mine drilling grouting and sealing device described in the utility model comprises a coal mine drill bit, a hollow cushion layer liquid guide unit is movably sleeved on the outer surface of the coal mine drill bit, the hollow cushion layer liquid guide unit comprises a hollow sleeve, a sealing soft strip, a one-way liquid guide tube and a liquid inlet hole, a grouting liquid injection unit is arranged on the bottom surface of the hollow sleeve, and the grouting liquid injection unit comprises a grouting sealing tank and a downward pressure slide plate.
[0008] Preferably, two cavities are provided inside the grouting sealing tank, and a raising column is fixedly connected to the inner bottom surface of the right cavity.
[0009] Preferably, a pull rod is movably sleeved on the top surface of the grouting sealing tank, and the bottom end of the pull rod is fixedly connected to the top surface of the downward pressure slide plate, and cooperates with a sealing soft ring to seal the joint between the liquid guide tube and the grouting sealing tank. As the gas continues to accumulate inside the grouting sealing tank, the downward pressure slide plate is pressed downward as the gas continues to expand inside the grouting sealing tank.
[0010] Preferably, a sealing soft ring is provided at the middle position of the top of the grouting sealing tank, and the outer surface of the downward pressure slide plate is slidably sleeved on the inner surface of the grouting sealing tank, so that the grouting liquid inside the grouting sealing tank is poured into the interior of the outward-expanding liquid guiding strip from the bottom of the outward-expanding liquid guiding strip, and the grouting liquid is guided into the interior of the borehole along the bottom of the hollow sleeve, and passes through the gap at the joint between the coal mine drill bit and the hollow sleeve, and the grouting liquid is filled into the interior of the coal seam borehole to seal the hole, and at the same time, the coal mine drill bit is slowly pulled out from the inside of the hole, so that the grouting liquid slowly fills the inside of the hole, thereby preventing the coal mine drill bit from being pulled out all at once, and the grouting liquid cannot seal the inside of the hole in time, thereby reducing the direct discharge of internal gas.
[0011] Preferably, a drilling joint is fixedly connected to one end of the coal mine drill bit, and a fitting sealing disk is fixedly connected to the outer surface of one end of the drilling joint, the drilling joint on one end of the coal mine drill bit is docked with the drilling rig, and the fitting sealing disk on the outer surface of the drilling joint is sleeved on the surface of one end of the hollow sleeve, and a clamping sealing strip is provided on the inner surface of the fitting sealing disk, and the clamping sealing strip on the outer surface of the fitting sealing disk is docked with the inner surface of the docking limit groove, and the coal mine drill bit is cooperated to drill a hole on the surface of the coal seam, and the inner surface of the hollow sleeve is movably sleeved on the outer surface of the drilling joint.
[0012] Preferably, a liquid guiding cavity is provided on the inner surfaces of the hollow sleeve and the drilling clamp joint, and a docking limit groove which is movably sleeved on the outer surface of the clamping sealing strip is provided on the right side surface of the hollow sleeve, and the sealing strip is fixedly installed on the left end surface of the hollow sleeve, and cooperates with the diameter size of the coal mine drill bit. When drilling, the hollow sleeve is extended into the interior of the coal hole, and at the same time, the sealing strip is flexibly squeezed on the inner wall surface of the coal hole to seal it. The one-way liquid guiding tube is fixedly installed on the bottom outer surface of the hollow sleeve, and the liquid inlet hole is opened in the middle position of the left side of the hollow sleeve. If gas is excavated, the gas will also pass through the gap at the joint between the coal mine drill bit and the hollow sleeve and enter the interior of the hollow sleeve. The gas is filled and accumulated in the hollow sleeve, and the accumulated gas is poured into the interior of the liquid guiding tube by using the liquid inlet hole in the middle position of the hollow sleeve.
[0013] Preferably, an outward-facing liquid guide strip is fixedly connected to the outer surface of the hollow sleeve, and the outward-facing liquid guide strip is positioned on the outer surface of the liquid inlet hole. Liquid guide tubes are respectively fixedly connected to the top and bottom surfaces of the outward-facing liquid guide strip, and one end of the liquid guide tube is fixedly connected to the top surface of the grouting sealing tank.
[0014] The beneficial effects of the utility model are as follows:
[0015] 1. A coal mine drilling grouting and sealing device described in the utility model docks the drilling card joint on one end of the coal mine drill bit with the drilling machine, sleeves the fitting sealing disk on the outer surface of the drilling card joint on the surface of one end of the hollow sleeve, and docks the fitting sealing strip on the outer surface of the fitting sealing disk with the inner surface of the docking limit groove, cooperates with the coal mine drill bit to drill a hole on the surface of the coal seam, and when the drilling card joint is rotated, the fitting sealing disk will rotate on the surface of one end of the hollow sleeve, and when drilling is carried out, the hollow sleeve is extended into the interior of the coal hole in accordance with the diameter size of the coal mine drill bit. At the same time, the sealing strip is softly squeezed on the inner wall of the coal hole to seal it. If water appears inside the coal seam, it will pass through the gap between the coal mine drill bit and the hollow sleeve and enter the interior of the liquid guide cavity. The one-way liquid guide tube is located on the bottom surface of the hollow sleeve to discharge the water accumulated at the bottom in one direction. If gas is excavated, the gas will also pass through the gap between the coal mine drill bit and the hollow sleeve and enter the interior of the hollow sleeve. The gas is filled and accumulated inside the hollow sleeve, and the accumulated gas is poured into the interior of the liquid guide tube through the liquid inlet hole in the middle of the hollow sleeve.
[0016] 2. The coal mine drilling grouting and sealing device described in the utility model cooperates with a sealing soft ring to seal the joint between the liquid guide tube and the grouting sealing tank. As the gas is continuously accumulated inside the grouting sealing tank, as the gas is continuously expanded inside the grouting sealing tank, the downward pressing slide plate is pressed downward, and the grouting liquid inside the grouting sealing tank is poured into the inside of the outward liquid guide strip from the bottom of the outward liquid guide strip, and the grouting liquid is guided to the inside of the borehole along the bottom of the hollow sleeve, and passes through the gap formed by the joint of the coal mine drill bit and the hollow sleeve, and the grouting liquid is filled into the inside of the coal seam borehole to seal the hole, and at the same time, the coal mine drill bit is slowly pulled out from the inside of the hole, so that the grouting liquid slowly fills the inside of the hole, thereby preventing the coal mine drill bit from being pulled out all at once, and the grouting liquid cannot seal the inside of the hole in time, reducing the direct discharge of the internal gas, and avoiding harm to employees in a gas environment. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The utility model will be further described below in conjunction with the accompanying drawings.
[0018] Figure 1 It is a three-dimensional diagram of the utility model;
[0019] Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the coal mine drill bit in the utility model;
[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the coal mine drill bit in the utility model in a transverse section;
[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the coal mine drill bit in the utility model;
[0022] Figure 5 It is a schematic diagram of the cutaway three-dimensional structure of the grouting sealing tank in the utility model.
[0023] In the figure: 11, coal mine drill bit; 12, drilling clamp joint; 13, fitting sealing disk; 14, clamping sealing strip; 15, hollow sleeve; 16, sealing soft strip; 17, liquid guide cavity; 18, outward liquid guide strip; 19, docking limit groove; 110, one-way liquid guide tube; 111, liquid guide tube;
[0024] 112. Grouting sealing tank; a1. Heightening column; a2. Pressing slide plate; a3. Pulling rod; a4. Sealing soft ring;
[0025] 113. Liquid inlet. DETAILED DESCRIPTION
[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0027] like Figures 1 to 5 As shown, a coal mine drilling grouting and sealing device according to an embodiment of the utility model comprises a coal mine drill bit 11, a hollow cushion layer liquid guide unit is movably sleeved on the outer surface of the coal mine drill bit 11, the hollow cushion layer liquid guide unit comprises a hollow sleeve 15, a sealing soft strip 16, a one-way liquid guide tube 110 and a liquid inlet hole 113, a grouting liquid injection unit is arranged on the bottom surface of the hollow sleeve 15, the grouting liquid injection unit comprises a grouting sealing tank 112 and a downward pressing slide plate a2, two cavities are arranged inside the grouting sealing tank 112, a padding column a1 is fixedly connected to the inner bottom surface of the right cavity, and a grouting liquid injection unit is movably sleeved on the top surface of the grouting sealing tank 112. There is a pull rod a3, the bottom end of which is fixedly connected to the top surface of the downward pressing slide plate a2, and cooperates with the sealing soft ring a4 to seal the joint between the liquid guide tube 111 and the grouting sealing tank 112. As the gas is continuously accumulated inside the grouting sealing tank 112, as the gas is continuously expanded inside the grouting sealing tank 112, the downward pressing slide plate a2 is pressed down. A sealing soft ring a4 is provided at the middle position of the top of the grouting sealing tank 112, and the outer surface of the downward pressing slide plate a2 is slidably sleeved on the inner surface of the grouting sealing tank 112, so that the grouting liquid inside the grouting sealing tank 112 is discharged from the bottom of the outward liquid guide strip 18. The grouting liquid is poured into the interior of the outward-spreading liquid guide strip 18, and the grouting liquid is guided into the interior of the borehole along the bottom of the hollow sleeve 15, and the gap formed by the coal mine drill bit 11 and the hollow sleeve 15 is passed through, and the grouting liquid is filled into the interior of the coal seam borehole to seal the hole. At the same time, the coal mine drill bit 11 is slowly pulled out from the inside of the hole, so that the grouting liquid slowly fills the inside of the hole, and the coal mine drill bit 11 is prevented from being pulled out all at once, and the grouting liquid cannot seal the inside of the hole in time, thereby reducing the direct discharge of the internal gas. A drilling clamp 12 is fixedly connected to one end of the coal mine drill bit 11, and the drilling clamp 12 is in the process of entering. When rotating, the fitting sealing disk 13 will rotate on the surface of one end of the hollow sleeve 15, and the fitting sealing disk 13 is fixedly connected to the outer surface of one end of the drilling clamp 12. The drilling clamp 12 on one end of the coal mine drill bit 11 is docked with the drilling rig, and the fitting sealing disk 13 on the outer surface of the drilling clamp 12 is sleeved on the surface of one end of the hollow sleeve 15. A snap-fit sealing strip 14 is provided on the inner surface of the fitting sealing disk 13, and the snap-fit sealing strip 14 on the outer surface of the fitting sealing disk 13 is docked with the inner surface of the docking limit groove 19, so as to cooperate with the coal mine drill bit 11 to drill a hole on the surface of the coal seam.
[0028] like Figures 1 to 5As shown, the inner surface of the hollow sleeve 15 is movably sleeved on the outer surface of the drilling clamp 12, and a liquid guide cavity 17 is provided on the inner surfaces of the hollow sleeve 15 and the drilling clamp 12. If water appears inside the coal seam, it will pass through the gap formed by the coal mine drill bit 11 and the hollow sleeve 15 and enter the interior of the liquid guide cavity 17. A docking limit groove 19 movably sleeved on the outer surface of the clamping sealing strip 14 is provided on the right side surface of the hollow sleeve 15. The sealing strip 16 is fixedly installed on the left end surface of the hollow sleeve 15. In accordance with the diameter size of the coal mine drill bit 11, when drilling, the hollow sleeve 15 is extended into the interior of the coal hole, and at the same time, the sealing strip 16 is softly squeezed on the inner wall surface of the coal hole to seal it. The one-way liquid guide tube 110 is fixedly installed on the bottom outer surface of the hollow sleeve 15. The unidirectional liquid guide tube 110 is on the bottom surface of the hollow sleeve 15, and discharges the water source accumulated at the bottom in a unidirectional manner. The liquid inlet hole 113 is located in the middle position on the left side of the hollow sleeve 15. If gas is excavated, the gas will also pass through the gap at the joint between the coal mine drill bit 11 and the hollow sleeve 15 and enter the interior of the hollow sleeve 15. The gas is filled and accumulated inside the hollow sleeve 15. The accumulated gas is poured into the interior of the liquid guide tube 111 by using the liquid inlet hole 113 in the middle position of the hollow sleeve 15. An outward liquid guide strip 18 is fixedly connected to the outer surface of the hollow sleeve 15, and the position of the outward liquid guide strip 18 is set on the outer surface of the liquid inlet hole 113. The top and bottom surfaces of the outward liquid guide strip 18 are respectively fixedly connected with liquid guide tubes 111, and one end of the liquid guide tube 111 is fixedly connected to the top surface of the grouting sealing tank 112.
[0029] Working principle: The drilling card joint 12 on one end of the coal mine drill bit 11 is docked with the drilling machine, the fitting sealing disk 13 on the outer surface of the drilling card joint 12 is sleeved on the one end surface of the hollow sleeve 15, and the clamping sealing strip 14 on the outer surface of the fitting sealing disk 13 is docked with the inner surface of the docking limit groove 19, and the coal mine drill bit 11 is used to drill a hole on the surface of the coal seam. When the drilling card joint 12 is rotated, the fitting sealing disk 13 will rotate on the one end surface of the hollow sleeve 15, and when the diameter size of the coal mine drill bit 11 is matched, the hollow sleeve 15 is extended into the inside of the coal hole when drilling, and the sealing soft strip is matched. 16 is softly squeezed on the inner wall surface of the coal hole to seal it. If water appears inside the coal seam, it will pass through the gap at the joint of the coal mine drill bit 11 and the hollow sleeve 15 and enter the inside of the liquid guide cavity 17. The one-way liquid guide tube 110 is located on the bottom surface of the hollow sleeve 15 to discharge the water accumulated at the bottom in one direction. If gas is excavated, the gas will also pass through the gap at the joint of the coal mine drill bit 11 and the hollow sleeve 15 and enter the inside of the hollow sleeve 15. The gas is filled and accumulated inside the hollow sleeve 15, and the accumulated gas is poured into the inside of the liquid guide tube 111 using the liquid inlet hole 113 at the middle position of the hollow sleeve 15.
[0030] The sealing soft ring a4 is used to seal the joint between the liquid guide tube 111 and the grouting sealing tank 112. As the gas is continuously accumulated inside the grouting sealing tank 112, as the gas is continuously expanded inside the grouting sealing tank 112, the downward pressing slide plate a2 is pressed down, and the grouting liquid inside the grouting sealing tank 112 is poured into the inside of the outward-expanding liquid guide strip 18 from the bottom of the outward-expanding liquid guide strip 18, and the grouting liquid is diverted to the inside of the borehole along the bottom of the hollow sleeve 15, and passes through the gap formed by the joint between the coal mine drill bit 11 and the hollow sleeve 15, and the grouting liquid is filled into the inside of the coal seam borehole to seal the hole. At the same time, the coal mine drill bit 11 is slowly pulled out from the inside of the hole, so that the grouting liquid slowly fills the inside of the hole, avoiding the coal mine drill bit 11 being pulled out all at once, and the grouting liquid cannot seal the inside of the hole in time, thereby reducing the direct discharge of the internal gas.
[0031] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A coal mine drilling grouting sealing device, characterized in that: The invention comprises a coal mine drill bit (11), wherein a hollow cushion layer liquid guide unit is movably sleeved on the outer surface of the coal mine drill bit (11), wherein the hollow cushion layer liquid guide unit comprises a hollow sleeve (15), a sealing strip (16), a one-way liquid guide tube (110) and a liquid inlet hole (113), and a grouting liquid injection unit is arranged on the bottom surface of the hollow sleeve (15), wherein the grouting liquid injection unit comprises a grouting sealing tank (112) and a downward pressing slide plate (a2).
2. A coal mine drilling grouting sealing device according to claim 1, characterized in that: The grouting sealing tank (112) is provided with two cavities inside, and a heightening column (a1) is fixedly connected to the inner bottom surface of the right cavity.
3. A coal mine drilling grouting sealing device according to claim 2, characterized in that: A pull rod (a3) is movably sleeved on the top surface of the grouting sealing tank (112), and the bottom end of the pull rod (a3) is fixedly connected to the top surface of the downward pressing slide plate (a2).
4. A coal mine drilling grouting sealing device according to claim 3, characterized in that: A sealing soft ring (a4) is arranged at the middle position of the top of the grouting sealing pot (112), and the outer surface of the pressing slide plate (a2) is slidably sleeved on the inner surface of the grouting sealing pot (112).
5. A coal mine drilling grouting sealing device according to claim 4, characterized in that: A drilling clamp (12) is fixedly connected to one end of the coal mine drill bit (11), a fitting sealing disk (13) is fixedly connected to the outer surface of one end of the drilling clamp (12), a fitting sealing strip (14) is provided on the inner surface of the fitting sealing disk (13), and the inner surface of the hollow sleeve (15) is movably sleeved on the outer surface of the drilling clamp (12).
6. The coal mine drilling grouting and sealing equipment according to claim 1, characterized in that: A liquid guide cavity (17) is provided on the inner surface of the hollow sleeve (15) and the drilled card joint (12); a docking limit groove (19) movably sleeved on the outer surface of the card joint sealing strip (14) is provided on the right surface of the hollow sleeve (15); the sealing soft strip (16) is fixedly mounted on the left end surface of the hollow sleeve (15); the one-way liquid guide tube (110) is fixedly mounted on the bottom outer surface of the hollow sleeve (15); and the liquid inlet hole (113) is opened in the middle position of the left side of the hollow sleeve (15).
7. A coal mine drilling grouting and sealing device according to claim 6, characterized in that: An outwardly extending liquid guiding strip (18) is fixedly connected to the outer surface of the hollow sleeve (15), and the outwardly extending liquid guiding strip (18) is arranged on the outer surface of the liquid inlet hole (113). A liquid guiding tube (111) is fixedly connected to the top and bottom surfaces of the outwardly extending liquid guiding strip (18), respectively, and one end of the liquid guiding tube (111) is fixedly connected to the top surface of the grouting sealing tank (112).
Citation Information
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