Air leakage stoppage device for coal mine goaf

Abstract

The utility model relates to the technical field of coal mine production, in particular to a coal mine goaf air leakage stoppage device which comprises an annular fence made of aluminum alloy materials, a sealing cover is arranged on the top of the annular fence, and a sealing inner ring is fixedly connected to the inner surface of the annular fence. The top of the sealing inner ring is obliquely arranged to form a sealing inclined face, the top of the inner wall of the sealing cover is fixedly connected with a top sealing ring, and the top sealing ring is used for sealing the top of the annular fence. The whole device is lighter and more durable, complex equipment is not needed for assistance during air leakage stopping, meanwhile, sealing is formed between the sealing cover and the outer surface of the annular fence, sealing is formed between the top sealing ring and the top of the annular fence, sealing is formed between the sealing inner ring and the sealing inner plug, triple sealing is formed between the sealing cover and the annular fence, and the better air leakage preventing effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine production, in particular to a device for plugging air leakage in a coal mine goaf area. Background Art

[0002] Coal mine goaf refers to the holes or cavities left after underground coal or coal gangue are mined during coal mining operations. In order to prevent water leakage from entering the goaf, causing air leakage in the goaf and causing spontaneous combustion of coal in the goaf of the mining face, it is necessary to block the leakage of water holes.

[0003] In the prior art, there is a device for plugging air leakage in drainage holes in coal mine goaf areas, such as that proposed in patent application number "CN202322276068.X". The utility model relates to the technical field of coal mine production, including a plugging steel plate and a constructed wall. A support frame is provided on one side of the plugging steel plate, and a lifting mechanism is provided inside the support frame.

[0004] However, in the above patent application, the steel plate needs to be lifted by a lifting mechanism to seal the water leakage hole, which makes the sealing operation complicated, and the steel plate is directly covered on the construction wall, which has a poor sealing effect and a poor effect of sealing the air leakage. Utility Model Content

[0005] The utility model aims to provide a device for plugging air leakage in coal mine goaf to solve the problems raised in the above-mentioned background technology.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A device for plugging air leakage in a coal mine goaf includes an annular enclosure made of aluminum alloy, a closing cover is arranged on the top of the annular enclosure, a closing inner ring is fixedly connected to the inner surface of the annular enclosure, the top of the closing inner ring is inclined to form a sealing slope, a top closing ring is fixedly connected to the top of the inner wall of the closing cover, and the top closing ring is used to close the top of the annular enclosure.

[0008] The top of the inner wall of the closed cover is fixedly connected with a closed inner plug, and the four sides of the bottom of the closed inner plug are inclined to form a sealing matching surface, the sealing matching surface and the sealing inclined surface are adapted to each other, and the bottom of the closed cover is fixedly connected with two fixed blocks, one side of the fixed block is fixedly connected with a positioning protrusion, and the outer surface of the annular enclosure is fixedly connected with a clamping mechanism used in conjunction with the positioning protrusion.

[0009] Preferably, the clamping mechanism includes a fixing sleeve, which is fixed to the outer surface of the annular enclosure, and a positioning groove for use with the positioning protrusion is opened on one side of the fixing sleeve. An adjusting spring is fixedly connected inside the fixing sleeve, and a clamping block is fixedly connected to the bottom of the adjusting spring.

[0010] Preferably, one side of the clamping block is arranged obliquely, and a positioning groove for use in conjunction with the clamping block is provided on the positioning protrusion.

[0011] Preferably, a control paddle is fixedly connected to one side of the clamping block, the control paddle is slidably connected to the fixed sleeve, and an outer surface of the control paddle is provided with anti-slip grooves.

[0012] Preferably, the outer surface of the annular enclosure is fixedly connected with an embedded ring and a fixed ring, and the fixed ring is arranged above the embedded ring.

[0013] Preferably, the fixing ring is provided with ground pins in a ring array, and both the embedded ring and the fixing ring are provided with openings for the ground pins to pass through.

[0014] Beneficial effects of the utility model:

[0015] The utility model adopts an annular enclosure and a closing cover made of aluminum alloy to jointly stop air leakage in the drainage holes in the goaf of a coal mine, making the entire device more lightweight and durable, and no complicated equipment is needed to assist in stopping air leakage. At the same time, seals are formed between the closing cover and the outer surface of the annular enclosure, the top closing ring and the top of the annular enclosure, and the closed inner ring and the closed inner plug, forming a triple seal between the closing cover and the annular enclosure, thereby achieving a better effect in preventing air leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This utility model Figure 1 Schematic diagram of the structure of the middle ring enclosure;

[0019] Figure 3 This utility model Figure 1 A schematic diagram of the structure of the bottom of the middle closed cover;

[0020] Figure 4 This utility model Figure 2 Schematic diagram of the structure inside the fixed sleeve.

[0021] The reference numerals in the figures are as follows:

[0022] 1. Annular enclosure, 101. Embedded ring, 102. Fixed ring, 2. Closing cover, 3. Closed inner ring, 301. Sealing slope, 4. Top closing ring, 5. Closed inner plug, 501. Sealing matching surface, 6. Fixed block, 7. Positioning protrusion, 701. Positioning slot, 8. Fixed sleeve, 801. Positioning groove, 9. Adjusting spring, 10. Clamping block, 11. Control paddle, 12. Ground pin. DETAILED DESCRIPTION

[0023] 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 of 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.

[0024] A device for plugging air leakage in a coal mine goaf includes an annular enclosure 1 made of aluminum alloy, a closing cover 2 is arranged on the top of the annular enclosure 1, a closing inner ring 3 is fixedly connected to the inner surface of the annular enclosure 1, the top of the closing inner ring 3 is inclined to form a sealing inclined surface 301, and a top closing ring 4 is fixedly connected to the top of the inner wall of the closing cover 2, and the top closing ring 4 is used to close the top of the annular enclosure 1.

[0025] The top of the inner wall of the closed cover 2 is fixedly connected with a closed inner plug 5, and the four sides of the bottom of the closed inner plug 5 are inclined to form a sealing matching surface 501, and the sealing matching surface 501 is adapted to the sealing inclined surface 301. The bottom of the closed cover 2 is fixedly connected with two fixed blocks 6, and one side of the fixed block 6 is fixedly connected with a positioning protrusion 7, and the outer surface of the annular enclosure 1 is fixedly connected with a clamping mechanism used in conjunction with the positioning protrusion 7.

[0026] like Figure 1 , Figure 2 and Figure 3 The annular enclosure 1 is located around the drainage hole in the coal mine goaf, and the closing cover 2 is located above the drainage hole in the coal mine goaf. The closing cover 2 and the annular enclosure 1 are both made of aluminum alloy, which makes the closing cover 2 and the annular enclosure 1 more lightweight and durable, and can be carried manually. The bottom of the closing cover 2 can be mounted on the outer surface of the annular enclosure 1.

[0027] The clamping mechanism includes a fixing sleeve 8, which is fixed to the outer surface of the annular enclosure 1. A positioning groove 801 used in conjunction with the positioning protrusion 7 is opened on one side of the fixing sleeve 8. An adjusting spring 9 is fixedly connected inside the fixing sleeve 8, and a clamping block 10 is fixedly connected to the bottom of the adjusting spring 9.

[0028] like Figure 4The adjusting spring 9 applies downward pressure to the clamping block 10 , and there is a cavity inside the fixing sleeve 8 to accommodate the adjusting spring 9 and the clamping block 10 .

[0029] One side of the clamping block 10 is arranged obliquely, and a positioning groove 701 used in conjunction with the clamping block 10 is provided on the positioning protrusion 7 .

[0030] like Figure 3 and Figure 4 The inclined surface of the clamping block 10 is located near the opening of the positioning groove 801 , so that when the positioning protrusion 7 moves into the positioning groove 801 , it will first contact the inclined surface of the clamping block 10 .

[0031] A control paddle 11 is fixedly connected to one side of the clamping block 10 . The control paddle 11 is slidably connected to the fixing sleeve 8 . The outer surface of the control paddle 11 is provided with anti-slip grooves.

[0032] like Figure 2 and Figure 4 The main part of the control paddle 10 is located on the outside of the fixed sleeve 8. There is a sliding groove on the fixed sleeve 8, so that the control paddle 10 can move up and down, and drive the clamping block 10 to move up and down in the fixed sleeve 8. The anti-slip grooves on the surface of the control paddle 11 make it convenient to manually push the control paddle 10.

[0033] The outer surface of the annular enclosure 1 is fixedly connected with an embedded ring 101 and a fixed ring 102 , and the fixed ring 102 is arranged above the embedded ring 101 .

[0034] like Figure 1 and Figure 2 The annular enclosure 1, the embedded ring 101 and the fixed ring 102 are integrally formed. When in use, the annular enclosure 1 and the embedded ring 101 can be buried underground, and the fixed ring 102 can be attached to the ground to improve the stability of the annular enclosure 1.

[0035] The fixing ring 102 is provided with ground pins 12 in a ring array, and both the embedded ring 101 and the fixing ring 102 are provided with openings for the ground pins 12 to pass through.

[0036] like Figure 1 and Figure 2 The ground pin 12 can pass through the embedded ring 101 and the fixing ring 102 and be inserted into the ground to fix the fixing ring 102 and the annular enclosure 1, thereby further improving the stability of the annular enclosure 1.

[0037] The working principle of the coal mine goaf area air leakage plugging device provided by the utility model is as follows:

[0038] When it is necessary to plug the leakage of the water hole in the coal mine goaf, the closing cover 2 is moved down and sleeved on the surface of the annular enclosure 1. At this time, the inner surface of the closing cover 2 and the outer surface of the annular enclosure 1 form a seal, and the top closing ring 4 is attached to the top of the annular enclosure 1 to form a seal. The sealing mating surface 501 and the sealing inclined surface 301 are attached together to form a seal between the closed inner plug 5 and the closed inner ring 3;

[0039] At the same time, the closing cover 2 is rotated so that the fixing block 6 drives the positioning protrusion 7 to rotate, and the positioning protrusion 7 is clamped into the positioning groove 801. The positioning protrusion 7 squeezes the inclined surface of the clamping block 10, so that the clamping block 10 moves up. When the positioning protrusion 7 is completely clamped into the positioning groove 801, the spring 9 is adjusted to press the clamping block 10 downward, and the clamping block 10 passes through the positioning clamping groove 701, and the positioning protrusion 7 is clamped in the positioning groove 801. At this time, the closing cover 2 and the annular enclosure 1 cannot be separated;

[0040] On the contrary, moving the control paddle 11 upward can drive the clamping block 10 to move upward and separate the positioning protrusion 7. At this time, the closing cover 2 can be rotated to drive the positioning protrusion 7 to disengage from the positioning groove 801, move the closing cover 2 upward, and separate the closing cover 2 and the annular enclosure 1.

[0041] Compared with the related art, the utility model provides a coal mine goaf area air leakage plugging device with the following beneficial effects:

[0042] The utility model adopts an annular enclosure 1 and a closing cover 2 made of aluminum alloy to jointly block air leakage from the drainage holes in the goaf of a coal mine, making the entire device more lightweight and durable, and no complicated equipment is required to assist in blocking air leakage. At the same time, seals are formed between the closing cover 2 and the outer surface of the annular enclosure 1, the top closing ring 4 and the top of the annular enclosure 1, and the closed inner ring 3 and the closed inner plug 5, forming a triple seal between the closing cover 2 and the annular enclosure 1, thereby achieving a better effect in preventing air leakage.

[0043] The above shows and describes the basic principle, 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, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A device for plugging air leakage in coal mine goaf, comprising an annular enclosure (1) made of aluminum alloy, characterized in that: A closed cover (2) is arranged on the top of the annular enclosure (1); a closed inner ring (3) is fixedly connected to the inner surface of the annular enclosure (1); the top of the closed inner ring (3) is inclined to form a sealing inclined surface (301); a top closed ring (4) is fixedly connected to the top of the inner wall of the closed cover (2); and the top closed ring (4) is used to close the top of the annular enclosure (1); The top of the inner wall of the closure cover (2) is fixedly connected with a closed inner plug (5), and the four sides of the bottom of the closed inner plug (5) are inclined to form a sealing matching surface (501), and the sealing matching surface (501) and the sealing inclined surface (301) are adapted to each other. The bottom of the closure cover (2) is fixedly connected with two fixed blocks (6), and one side of the fixed block (6) is fixedly connected with a positioning protrusion (7), and the outer surface of the annular enclosure (1) is fixedly connected with a clamping mechanism used in conjunction with the positioning protrusion (7).

2. A device for plugging air leakage in coal mine goaf according to claim 1, characterized in that: The clamping mechanism comprises a fixing sleeve (8), the fixing sleeve (8) being fixed to the outer surface of the annular enclosure (1), a positioning groove (801) for use with the positioning protrusion (7) being provided on one side of the fixing sleeve (8), an adjusting spring (9) being fixedly connected inside the fixing sleeve (8), and a clamping block (10) being fixedly connected to the bottom of the adjusting spring (9).

3. A device for plugging air leakage in coal mine goaf according to claim 2, characterized in that: One side of the clamping block (10) is arranged at an angle, and a positioning groove (701) for use with the clamping block (10) is provided on the positioning protrusion (7).

4. A device for plugging air leakage in coal mine goaf according to claim 2, characterized in that: A control paddle (11) is fixedly connected to one side of the clamping block (10); the control paddle (11) and the fixed sleeve (8) are slidably connected; and an outer surface of the control paddle (11) is provided with anti-slip grooves.

5. The device for plugging air leakage in coal mine goaf according to claim 1, characterized in that: The outer surface of the annular enclosure (1) is fixedly connected with an embedded ring (101) and a fixed ring (102), and the fixed ring (102) is arranged above the embedded ring (101).

6. A device for plugging air leakage in coal mine goaf according to claim 5, characterized in that: The fixing ring (102) is provided with ground pins (12) in a ring array, and both the embedded ring (101) and the fixing ring (102) are provided with openings for the ground pins (12) to pass through.

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