Coal mine gas extraction hole sealing device

Abstract

The utility model discloses a coal mine gas extraction hole sealing device which comprises a sealing cover, a connector is fixedly connected to the bottom of the sealing cover, a through pipe is connected to an inner cavity of the connector in a sleeved mode, shells are fixedly connected to the two sides of the bottom of the sealing cover respectively, one side of each shell is movably connected with a hand crank, and the other side of each shell is movably connected with a handle. And one side of the hand crank is fixedly connected with a threaded rod. A threaded rod is conveniently driven to rotate through a hand crank, when threads on the surface of the threaded rod are in threaded connection with threads in an inner cavity of a threaded sleeve, the threaded rod rotates to drive the threaded sleeve to move, a connecting rod is driven to move through the threaded sleeve, and a limiting plate is driven to move through the connecting rod; and a C-shaped limiting ring is driven by a limiting plate to be attached to the surface of the through pipe, so that the sealing cover is conveniently supported, the situation that the sealing cover shakes when the pressure of internal gas is larger than the pressure of external air is avoided, and therefore the using stability of the sealing cover is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine gas extraction, in particular to a coal mine gas extraction hole sealing device. Background Art

[0002] Coal mine gas extraction is a task that needs to be done during the coal mining process. Through gas extraction, not only can the gas outflow during the mining process be reduced and the occurrence of gas explosions be prevented, but also harm can be turned into benefits and developed and utilized as a companion resource of coal resources. The main method is to drill into the area where coal seams and gas gather, pull the boreholes to a dedicated pipeline, and use the gas to the ground through extraction equipment for utilization or discharge. In order to prevent gas from escaping during the extraction process, causing energy waste and safety hazards, it is necessary to use a sealing device to seal the gas extraction hole;

[0003] The existing sealing method usually involves wrapping absorbent linen or cloth bags around the two ends of the discharge pipe body, and then using AB liquid or Marisan and other sealing materials between the absorbent linen to seal the holes. However, in actual use, when the gas needs to be extracted, the sealing material needs to be removed and then the extraction work is carried out. When the extraction work is completed, the new sealing material needs to be re-put on the surface of the extraction hole for sealing. This wastes a lot of sealing materials and increases the workload of the staff, causing trouble to the staff. For this reason, we propose a coal mine gas extraction hole sealing device to solve the above problems. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a coal mine gas extraction hole sealing device, which achieves the function of facilitating extraction.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a coal mine gas extraction hole sealing device, comprising a sealing cover, the bottom of the sealing cover is fixedly connected with a connecting head, the inner cavity of the connecting head is sleeved with a through pipe, both sides of the bottom of the sealing cover are fixedly connected with a shell, one side of the shell is movably connected with a hand crank, one side of the hand crank is fixedly connected with a threaded rod, one side of the threaded rod penetrates into the inner cavity of the shell and is threadedly connected with a threaded sleeve, the bottom of the threaded sleeve is fixedly connected with a connecting rod, the bottom of the connecting rod penetrates into the outside of the shell and is fixedly connected with a limiting plate, one side of the limiting plate is fixedly connected with a C-shaped limiting ring, the inner side of the C-shaped limiting ring is fitly connected to the surface of the through pipe, the top of the sealing cover is provided with a mining hole body, the top of the mining hole body is fitly connected with a sealing gasket, the top of the sealing gasket is fixedly connected with a sealing plate, and both sides of the bottom of the sealing plate are fixedly connected with sliding blocks.

[0008] As a preferred solution, both sides of the top of the sealing cover are provided with limiting grooves, and the bottom of the sliding block is slidably connected to the inner cavity of the limiting grooves.

[0009] Through the above technical solution, the limiting groove facilitates the sliding of the sliding block in its inner cavity, thereby improving the sliding stability of the sealing plate and the sealing gasket.

[0010] As a preferred solution, a limiting shell is fixedly connected to both sides of the top of the sealing cover and on one side of the sliding block, a spring is fixedly connected to one side of the inner cavity of the limiting shell, a sliding plate is fixedly connected to one side of the spring, a pull rod is fixedly connected to one side of the sliding plate, and an insert rod is fixedly connected to the other side of the sliding plate.

[0011] Through the above technical solution, the elasticity of the spring can be effectively utilized to push the sliding plate to move, so that the sliding plate drives the insertion rod to move to limit the insertion of the sliding block, preventing the sliding block from being affected by the gas pressure during the static process, causing the sealing plate and the sealing gasket to slide, thereby improving the stability of the seal.

[0012] As a preferred solution, a plug hole is provided on the surface of the sliding block, and one side of the plug rod is plugged into the inner cavity of the sliding block.

[0013] Through the above technical solution, the insertion rod can be easily plugged in through the insertion hole.

[0014] As a preferred solution, a slide groove is provided at the top of the inner cavity of the shell, a slide rod is fixedly connected to the top of the threaded sleeve, and the top of the slide rod is slidably connected to the inner cavity of the slide groove.

[0015] Through the above technical solution, the sliding stability of the slide bar is improved through the slide groove.

[0016] As a preferred solution, a bearing is fixedly connected to the left side of the inner cavity of the shell, and the left side of the threaded rod is rotatably connected to the inner cavity of the bearing.

[0017] Through the above technical solution, the rotation stability of the threaded rod is improved through the bearing.

[0018] As a preferred solution, a through opening is provided at the bottom of the inner cavity of the shell, and the surface of the connecting rod is slidably connected to the inner cavity of the through opening.

[0019] By means of the technical solution, the sliding stability of the connecting rod is improved through the through opening.

[0020] (III) Beneficial effects

[0021] Compared with the prior art, the utility model provides a coal mine gas extraction hole sealing device, which has the following beneficial effects.

[0022] 1. The utility model uses a hand crank to drive the threaded rod to rotate. Since the threads on the surface of the threaded rod are threadedly connected with the threads in the inner cavity of the threaded sleeve, when the threaded rod rotates, the threaded sleeve is driven to move, and the connecting rod is driven to move through the threaded sleeve, and the limit plate is driven to move through the connecting rod, and the C-shaped limit ring is driven to fit the surface of the through pipe through the limit plate, which is convenient for supporting the sealing cover and avoiding the shaking of the sealing cover when the internal gas pressure is greater than the external air pressure, thereby improving the stability of the sealing cover. Through the sealing plate and the sealing gasket, it is convenient to seal the mining hole body to avoid gas leakage, and indirectly saves the steps of frequent sealing with sealing materials by the staff, thereby improving the work efficiency of the staff and saving the staff's time.

[0023] 2. The utility model uses a limit groove to facilitate the sliding of the sliding block in its inner cavity, thereby improving the sliding stability of the sealing plate and the sealing gasket. The spring can effectively utilize the elasticity to push the sliding plate to move, so that the sliding plate drives the insertion rod to move and insert and limit the sliding block, preventing the sliding block from being affected by the gas pressure during the static process, causing the sealing plate and the sealing gasket to slide, thereby improving the stability of the seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the utility model;

[0025] Figure 2 This is a cross-sectional view of the shell structure of the utility model;

[0026] Figure 3 For this utility model Figure 1 A partial enlarged view of the middle part;

[0027] Figure 4 This is a cross-sectional view of the limiting shell structure of the utility model.

[0028] In the figure: 1. sealing cover; 2. threaded rod; 3. hand crank; 4. shell; 5. limit plate; 6. through pipe; 7. C-type limit ring; 8. connector; 9. hole body; 10. sealing plate; 11. sliding rod; 12. threaded sleeve; 13. connecting rod; 14. sliding block; 15. plug rod; 16. limit shell; 17. pull rod; 18. sealing gasket; 19. spring; 20. sliding plate. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-4 The utility model discloses a coal mine gas extraction hole sealing device, comprising a sealing cover 1, a connecting head 8 is fixedly connected to the bottom of the sealing cover 1, a through pipe 6 is sleeved in the inner cavity of the connecting head 8, a shell 4 is fixedly connected to both sides of the bottom of the sealing cover 1, a hand crank 3 is movably connected to one side of the shell 4, a threaded rod 2 is fixedly connected to one side of the hand crank 3, one side of the threaded rod 2 passes through the inner cavity of the shell 4 and is threadedly connected to a threaded sleeve 12, a connecting rod 13 is fixedly connected to the bottom of the threaded sleeve 12, and the bottom of the connecting rod 13 passes through the outside of the shell 4 and is fixedly connected to a limiting plate 5, one side of the limiting plate 5 is fixedly connected to a C-shaped limiting ring 7, the inner side of the C-shaped limiting ring 7 is fitted and connected to the surface of the through pipe 6, a mining hole body 9 is opened at the top of the sealing cover 1, a sealing pad 18 is fitted and connected to the top of the mining hole body 9, a sealing plate 10 is fixedly connected to the top of the sealing pad 18, and sliding blocks 14 are fixedly connected to both sides of the bottom of the sealing plate 10.

[0031] Through the above technical scheme, the hand crank 3 can be used to drive the threaded rod 2 to rotate. Since the threads on the surface of the threaded rod 2 are threadedly connected with the threads in the inner cavity of the threaded sleeve 12, when the threaded rod 2 rotates, the threaded sleeve 12 is driven to move, and the connecting rod 13 is driven to move through the threaded sleeve 12, and the limit plate 5 is driven to move through the connecting rod 13, and the C-shaped limit ring 7 is driven to fit the surface of the through pipe 6 through the limit plate 5, which is convenient for supporting the sealing cover 1 to avoid the sealing cover 1 from shaking when the internal gas pressure is greater than the external air pressure, thereby improving the stability of the sealing cover 1. Through the sealing plate 10 and the sealing gasket 18, it is convenient to seal the mining hole body 9 to avoid gas leakage, which indirectly saves the staff from frequently sealing with sealing materials, improves the staff's work efficiency, and saves the staff's time.

[0032] Specifically, both sides of the top of the sealing cover 1 are provided with limiting grooves, the bottom of the sliding block 14 is slidably connected to the inner cavity of the limiting groove, the two sides of the top of the sealing cover 1 and the side of the sliding block 14 are fixedly connected to the limiting shell 16, one side of the inner cavity of the limiting shell 16 is fixedly connected with a spring 19, one side of the spring 19 is fixedly connected with a sliding plate 20, one side of the sliding plate 20 is fixedly connected with a pull rod 17, and the other side of the sliding plate 20 is fixedly connected with an insertion rod 15, a plug hole is provided on the surface of the sliding block 14, one side of the insertion rod 15 is inserted into the inner cavity of the sliding block 14, a sliding groove is provided on the top of the inner cavity of the shell 4, the top of the threaded sleeve 12 is fixedly connected with the sliding rod 11, and the top of the sliding rod 11 is slidably connected to the sliding groove In the inner cavity of the shell 4, a bearing is fixedly connected to the left side of the inner cavity of the shell 4, and the left side of the threaded rod 2 is rotatably connected to the inner cavity of the bearing. A through hole is opened at the bottom of the inner cavity of the shell 4, and the surface of the connecting rod 13 is slidably connected to the inner cavity of the through hole. Through the limiting groove, the sliding block 14 is convenient for sliding in its inner cavity, thereby improving the sliding stability of the sealing plate 10 and the sealing gasket 18. Through the spring 19, the elasticity can be effectively utilized to push the sliding plate 20 to move, so that the sliding plate 20 drives the insertion rod 15 to move and insert and limit the sliding block 14, thereby preventing the sliding block 14 from being affected by the gas pressure during the static process, causing the sealing plate 10 and the sealing gasket 18 to slide, thereby improving the sealing stability.

[0033] The working principle of the utility model is as follows: first, the through pipe 6 is connected to the hole drilled on the surface of the coal mine, and then the user inserts the connector 8 into the surface of the through pipe 6, and then the user holds the hand crank 3, and the hand crank 3 is used to drive the threaded rod 2 to rotate. Since the threads on the surface of the threaded rod 2 are threadedly connected with the threads in the inner cavity of the threaded sleeve 12, when the threaded rod 2 rotates, the threaded sleeve 12 is driven to move, and the connecting rod 13 is driven to move through the threaded sleeve 12, and the limiting plate 5 is driven to move through the connecting rod 13, and the C-shaped limiting ring 7 is driven to fit the surface of the through pipe 6 through the limiting plate 5, so as to support the sealing cover 1 and avoid shaking of the sealing cover 1 when the internal gas pressure is greater than the external air pressure, thereby improving the stability of the sealing cover 1 when it is used. Figure 1 As shown, it is the state after the sealing cover 1 is supported, and the state after the mining hole body 9 is sealed. When gas needs to be taken, the user pulls the pull rod 17, and the pull rod 17 is used to drive the sliding plate 20 to shrink and move, and the sliding plate 20 drives the spring 19 and the insertion rod 15 to shrink and move. When the insertion rod 15 shrinks and moves out of the insertion hole on the surface of the sliding block 14, the limiting pressure of the sliding block 14 is eliminated. Then the user moves the sealing plate 10. When the sealing plate 10 drives the sealing gasket 18 to fall off the surface of the mining hole body 9, the pressure of the mining hole body 9 blocking the seal is eliminated. Then the user inserts the extraction tube through the mining hole body 9, and then extracts the gas through the cooperation of the through pipe 6.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A coal mine gas extraction hole sealing device, comprising a sealing cover (1), characterized in that: The bottom of the sealing cover (1) is fixedly connected to a connector (8), the inner cavity of the connector (8) is sleeved with a through pipe (6), both sides of the bottom of the sealing cover (1) are fixedly connected to a shell (4), one side of the shell (4) is movably connected to a hand crank (3), one side of the hand crank (3) is fixedly connected to a threaded rod (2), one side of the threaded rod (2) passes through the inner cavity of the shell (4) and is threadedly connected to a threaded sleeve (12), the bottom of the threaded sleeve (12) is fixedly connected to a connecting rod (13), and the connecting rod (13) is fixedly connected to the inner cavity of the shell (4). The bottom of the sealing cover (1) extends through the outside of the shell (4) and is fixedly connected to a limit plate (5), one side of the limit plate (5) is fixedly connected to a C-shaped limit ring (7), the inner side of the C-shaped limit ring (7) is closely connected to the surface of the through pipe (6), the top of the sealing cover (1) is provided with a mining hole body (9), the top of the mining hole body (9) is closely connected to a sealing gasket (18), the top of the sealing gasket (18) is fixedly connected to a sealing plate (10), and both sides of the bottom of the sealing plate (10) are fixedly connected to sliding blocks (14).

2. A coal mine gas extraction hole sealing device according to claim 1, characterized in that: Limiting grooves are provided on both sides of the top of the sealing cover (1), and the bottom of the sliding block (14) is slidably connected in the inner cavity of the limiting grooves.

3. A coal mine gas extraction hole sealing device according to claim 1, characterized in that: A limiting shell (16) is fixedly connected to both sides of the top of the sealing cover (1) and located on one side of the sliding block (14); a spring (19) is fixedly connected to one side of the inner cavity of the limiting shell (16); a sliding plate (20) is fixedly connected to one side of the spring (19); a pull rod (17) is fixedly connected to one side of the sliding plate (20); and an insertion rod (15) is fixedly connected to the other side of the sliding plate (20).

4. A coal mine gas extraction hole sealing device according to claim 3, characterized in that: The surface of the sliding block (14) is provided with an insertion hole, and one side of the insertion rod (15) is inserted into the inner cavity of the sliding block (14).

5. A coal mine gas extraction hole sealing device according to claim 1, characterized in that: A slide groove is provided at the top of the inner cavity of the shell (4), a slide rod (11) is fixedly connected to the top of the threaded sleeve (12), and the top of the slide rod (11) is slidably connected to the inner cavity of the slide groove.

6. A coal mine gas extraction hole sealing device according to claim 1, characterized in that: A bearing is fixedly connected to the left side of the inner cavity of the housing (4), and the left side of the threaded rod (2) is rotatably connected to the inner cavity of the bearing.

7. A coal mine gas extraction hole sealing device according to claim 1, characterized in that: A through opening is provided at the bottom of the inner cavity of the shell (4), and the surface of the connecting rod (13) is slidably connected in the inner cavity of the through opening.

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