Gas extraction device for improving gas extraction concentration in coal mine tunnel

Abstract

The utility model relates to the technical field of gas extraction devices, in particular to a gas extraction device for improving gas extraction concentration in a coal mine tunnel. The gas extraction device for improving the gas extraction concentration in the coal mine tunnel aims at solving the technical problems that in the prior art, the gas extraction concentration is low, and the insertion depth of an extraction pipe cannot be accurately determined. According to the technical scheme, the gas extraction device for improving the gas extraction concentration in the coal mine tunnel comprises a gas temporary storage tank; the device further comprises a mounting plate, an extraction pump, an extraction pipe, a depth adjusting assembly, a plugging assembly, an upper cover, an anti-collision assembly, a first air inlet pipe, a filtering and thickening assembly, a second air inlet pipe, a pushing handle and sliding wheels. The gas extraction hole sealing device has a plugging function and can completely seal the extraction hole, so that internal gas cannot escape outwards in the extraction process, external air cannot enter the extraction hole, the internal sealing performance is ensured, the gas extraction concentration is improved, and the gas extraction concentration is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas extraction devices, in particular to a gas extraction device for improving the gas extraction concentration in a coal mine tunnel. Background Art

[0002] Gas extraction refers to the process of drilling into coal seams and gas-accumulated areas, connecting the boreholes to special pipelines, and using extraction equipment to extract gas from coal seams and goafs to the ground for utilization or discharge into the total return air flow. It is not only an important measure to reduce the amount of gas outburst during mining, prevent gas over-limit and accumulation, and prevent gas explosions and coal and gas outburst accidents, but also can turn harm into benefit and develop and utilize gas as a resource associated with coal. To a certain extent, it can also improve the utilization rate of coal resources and reduce the impact on the environment. However, the existing gas extraction devices do not have the function of sealing extraction holes, and the surrounding air can easily mix into the extraction holes, resulting in low extraction concentration. In addition, the insertion depth of the extraction pipe cannot be accurately determined, and extraction is always carried out at the same position, which easily leads to low extraction efficiency. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a gas extraction device for improving the gas extraction concentration in coal mine tunnels. The gas extraction device for improving the gas extraction concentration in coal mine tunnels is intended to solve the technical problems of low gas extraction concentration and the inability to accurately determine the insertion depth of the extraction pipe under the prior art.

[0004] The technical solution of the utility model is: a gas extraction device for improving the gas extraction concentration in a coal mine tunnel, comprising a gas temporary storage tank; also comprising a mounting plate, an extraction pump, an extraction pipe, a depth adjustment component, a sealing component, an upper cover, an anti-collision component, a first air inlet pipe, a filtering and enriching component, a second air inlet pipe, a pusher and a sliding wheel; a mounting plate is fixedly connected to the left end of the gas temporary storage tank; an extraction pump is installed on the upper end of the mounting plate; an extraction pipe is installed on the inlet end of the extraction pump; a depth adjustment component is fixedly connected to the outer side of the extraction pipe; a sealing component sleeved on the outer side of the extraction pipe is fixedly connected to the left end of the depth adjustment component; an upper cover is installed on the upper end of the gas temporary storage tank; an anti-collision component is fixedly connected to the right end of the gas temporary storage tank; a first air inlet pipe, a filtering and enriching component and a second air inlet pipe are sequentially installed on the outlet end of the extraction pump; a pusher is fixedly connected to the upper side of the right end of the gas temporary storage tank; and an annular sliding wheel equidistantly distributed is fixedly connected to the lower end of the gas temporary storage tank.

[0005] Preferably, hold the push handle with your hand, cooperate with the sliding wheel to push the device to the extraction point, insert the extraction tube into the extraction hole, and fit the sealing component with the outside of the extraction hole to ensure the internal sealing. Then start the extraction pump on the upper end of the mounting plate, and the gas is sent into the gas storage tank through the first air inlet pipe, the filter concentration component and the second air inlet pipe. The anti-collision component protects the gas storage tank. After extraction for a period of time, adjust the insertion depth of the extraction tube through the depth adjustment component, thereby adjusting the extraction position and continuing extraction.

[0006] Preferably, the depth adjustment assembly includes a fixed plate; long threaded columns symmetrically distributed up and down are inserted into the fixed plate; an adjusting nut is threadedly connected to the outer side of the right end of the long threaded column; a return spring is sleeved on the outer side of the left end of the long threaded column; the right end of the return spring is fixedly connected to the left end of the fixed plate; the extraction tube is fixedly connected in the fixed plate, and the insertion depth of the extraction tube is adjusted by changing the position of the adjusting nut on the outer side of the long threaded column to avoid extraction at the same position all the time.

[0007] Preferably, the sealing assembly includes a movable sealing plate; an inner sealing ring is fixedly connected to the inner side of the movable sealing plate; the inner diameter of the inner sealing ring is equal to the outer diameter of the extraction tube; a sealing groove is opened at the left end of the movable sealing plate; a sealing gasket is fixedly connected in the sealing groove to ensure the sealing between the extraction hole and the external environment, reduce the air content extracted, and thus increase the gas extraction concentration.

[0008] Preferably, the anti-collision assembly includes an inner anti-collision plate; the inner side of the inner anti-collision plate is fixedly connected with elliptical shock-absorbing blocks that are evenly distributed in a ring; the elliptical shock-absorbing blocks are fixedly connected to the gas storage tank; the inner anti-collision plate is inserted with plug rods that are evenly distributed in a ring; the outer side of the plug rod is fixedly connected with an outer anti-collision plate, which has a double anti-collision effect and improves the protection of the gas storage tank.

[0009] Preferably, a shock-absorbing spring is fixedly connected between the inner anti-collision plate and the outer anti-collision plate; the shock-absorbing spring is sleeved on the outer side of the insertion rod, and in the absence of external force, the outer anti-collision plate is pushed outward by the rebound force of the shock-absorbing spring, ensuring that a buffer distance is left between the outer anti-collision plate and the inner anti-collision plate.

[0010] Preferably, the filtration and concentration assembly includes a filter housing; a downwardly inclined air outlet is installed at the left end of the filter housing; a molecular sieve gas separation membrane is fixedly connected above the air outlet in the filter housing to separate and filter the air and gas in the extracted gas, thereby increasing the gas extraction concentration.

[0011] Preferably, the second air inlet pipe is connected to the upper cover; and scale lines are provided on the surface of the extraction tube to facilitate observation of the insertion depth of the extraction tube.

[0012] Beneficial effects of the utility model:

[0013] 1. It has a plugging function, which completely seals the extraction hole to ensure that the gas inside will not escape during the extraction process. At the same time, the external air cannot enter the extraction hole, ensuring the internal sealing and improving the gas extraction concentration. In conjunction with the filtering device, it further filters the air in the mixed gas, reduces the air content in the extracted gas, and greatly improves the gas extraction concentration;

[0014] 2. The insertion depth of the extraction tube is adjustable. The extraction position can be accurately controlled through the scale on the surface of the extraction tube to avoid always extracting at the same position, which easily leads to the problem of low extraction efficiency. At the same time, it also has an anti-collision component to prevent the gas storage tank from being hit and causing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The first three-dimensional structure schematic diagram of the gas extraction device for improving the gas extraction concentration in the coal mine tunnel of the utility model is shown;

[0016] Figure 2 Shown is a schematic diagram of the three-dimensional structure of the depth adjustment component and the plugging component in the gas extraction device for improving the gas extraction concentration in the coal mine tunnel of the utility model;

[0017] Figure 3 Shown is a schematic diagram of the three-dimensional structure of the anti-collision component in the gas extraction device for improving the gas extraction concentration in the coal mine tunnel of the utility model;

[0018] Figure 4 Shown is a schematic diagram of the three-dimensional structure of the filtering and concentration enhancing component in the gas extraction device for improving the gas extraction concentration in the coal mine tunnel of the utility model.

[0019] Explanation of the reference numerals in the accompanying drawings: 1. Gas storage tank; 2. Mounting plate; 3. Extraction pump; 4. Extraction pipe; 5. Depth adjustment assembly; 51. Fixed plate; 52. Long threaded column; 53. Adjustment nut; 54. Reset spring; 6. Sealing assembly; 61. Movable sealing plate; 62. Inner sealing ring; 63. Sealing groove; 64. Sealing gasket; 7. Upper cover; 8. Anti-collision assembly; 81. Inner anti-collision plate; 82. Elliptical shock-absorbing block; 83. Insert rod; 84. Outer anti-collision plate; 85. Shock-absorbing spring; 9. First air inlet pipe; 10. Filtration and enrichment assembly; 101. Filter housing; 102. Air outlet; 103. Molecular sieve gas separation membrane; 11. Second air inlet pipe; 12. Push handle; 13. Sliding wheel. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] See also Figure 1The utility model provides an embodiment: a gas extraction device for improving the gas extraction concentration in a coal mine tunnel, comprising a gas temporary storage tank 1; further comprising a mounting plate 2, an extraction pump 3, an extraction pipe 4, a depth adjustment component 5, a blocking component 6, an upper cover 7, an anti-collision component 8, a first air intake pipe 9, a filtration and concentration component 10, a second air intake pipe 11, a pusher 12 and a sliding wheel 13; the left end of the gas temporary storage tank 1 is fixedly connected to the mounting plate 2; the upper end of the mounting plate 2 is installed with the extraction pump 3; the inlet end of the extraction pump 3 is installed with the extraction pump 3. Tube 4; a depth adjustment component 5 is fixedly connected to the outer side of the extraction tube 4; a plugging component 6 which is sleeved on the outer side of the extraction tube 4 is fixedly connected to the left end of the depth adjustment component 5; an upper cover 7 is installed on the upper end of the gas temporary storage tank 1; an anti-collision component 8 is fixedly connected to the right end of the gas temporary storage tank 1; a first air inlet pipe 9, a filtration and enrichment component 10 and a second air inlet pipe 11 are sequentially installed at the outlet end of the extraction pump 3; a pusher 12 is fixedly connected to the upper side of the right end of the gas temporary storage tank 1; a circular sliding wheel 13 which is evenly distributed is fixedly connected to the lower end of the gas temporary storage tank 1.

[0022] See also Figure 2 In this embodiment, the depth adjustment component 5 includes a fixed plate 51; a long threaded column 52 symmetrically distributed up and down is inserted in the fixed plate 51; an adjusting nut 53 is threadedly connected to the outer side of the right end of the long threaded column 52; a return spring 54 is sleeved on the outer side of the left end of the long threaded column 52; the right end of the return spring 54 is fixedly connected to the left end of the fixed plate 51; the extraction tube 4 is fixedly connected in the fixed plate 51; the plugging component 6 includes a movable plugging plate 61; an inner sealing ring 62 is fixedly connected to the inner side of the movable plugging plate 61; the inner diameter of the inner sealing ring 62 is equal to the outer diameter of the extraction tube 4; a sealing groove 63 is opened at the left end of the movable plugging plate 61; a sealing gasket 64 is fixedly connected in the sealing groove 63.

[0023] See also Figure 3-4 In this embodiment, the anti-collision component 8 includes an inner anti-collision plate 81; an elliptical shock-absorbing block 82 with equidistant distribution in an annular shape is fixedly connected to the inner side of the inner anti-collision plate 81; the elliptical shock-absorbing block 82 is fixedly connected to the gas temporary storage tank 1; a plug rod 83 with equidistant distribution in an annular shape is inserted into the inner anti-collision plate 81; an outer anti-collision plate 84 is fixedly connected to the outer side of the plug rod 83; a shock-absorbing spring 85 is fixedly connected between the inner anti-collision plate 81 and the outer anti-collision plate 84; the shock-absorbing spring 85 is sleeved on the outer side of the plug rod 83; the filtration and enrichment component 10 includes a filter housing 101; a downwardly inclined air outlet 102 is installed at the left end of the filter housing 101; a molecular sieve gas separation membrane 103 is fixedly connected above the air outlet 102 in the filter housing 101; the second air inlet pipe 11 is connected to the upper cover 7; and scale lines are provided on the surface of the extraction pipe 4.

[0024] When working, hold the push handle 12 with your hand, cooperate with the sliding wheel 13 to push the device to the extraction point, insert the extraction pipe 4 into the extraction hole, and the sealing gasket 64 in the sealing groove 63 fits with the outer side of the extraction hole to ensure the internal sealing. The movable sealing plate 61 ensures that there will be no gas leakage at the extraction hole. The inner sealing ring 62 can ensure that the gas will not leak from the gap between the extraction pipe 4 and the movable sealing plate 61. Then start the extraction pump 3 at the upper end of the mounting plate 2, and the gas is sent into the filter housing 101 through the first air inlet pipe 9, and the molecular sieve gas The separation membrane 103 separates the gas and the air, and the air is discharged through the air outlet 102. The gas concentration increases and is then sent into the gas temporary storage tank 1 from the second air inlet pipe 11. The anti-collision component 8 protects the gas temporary storage tank 1. After extraction for a period of time, the adjusting nut 53 at the right end of the long threaded column 52 is rotated. Since the position of the movable sealing plate 61 is fixed, the return spring 54 is compressed, and the extraction tube 4 on the inner side of the fixed plate 51 slides from the movable sealing plate 61, changing the insertion depth of the extraction tube 4, thereby adjusting the extraction position and continuing extraction.

[0025] Through the above steps, the sealing function is achieved, and the extraction hole is completely sealed, thereby ensuring that the internal gas will not escape outward during the extraction process. At the same time, the external air cannot enter the extraction hole, ensuring the internal sealing, and improving the gas extraction concentration. In conjunction with the filtering device, the air in the mixed gas is further filtered to reduce the air content in the extracted gas, greatly improving the gas extraction concentration.

[0026] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A gas extraction device for increasing the gas extraction concentration in a coal mine tunnel, comprising a gas temporary storage tank (1); characterized in that: It also includes a mounting plate (2), a suction pump (3), a suction pipe (4), a depth adjustment component (5), a plugging component (6), an upper cover (7), an anti-collision component (8), a first air intake pipe (9), a filtration and concentration component (10), a second air intake pipe (11), a pusher (12) and a sliding wheel (13); the left end of the gas temporary storage tank (1) is fixedly connected to the mounting plate (2); the upper end of the mounting plate (2) is installed with a suction pump (3); the inlet end of the suction pump (3) is installed with a suction pipe (4); the outer side of the suction pipe (4) is fixedly connected to the depth adjustment component (5); the left end of the depth adjustment component (5) is fixedly connected to a plugging component (6) sleeved on the outside of the extraction pipe (4); the upper end of the gas temporary storage tank (1) is equipped with an upper cover (7); the right end of the gas temporary storage tank (1) is fixedly connected to an anti-collision component (8); the outlet end of the extraction pump (3) is sequentially equipped with a first air inlet pipe (9), a filtration and concentration component (10) and a second air inlet pipe (11); the upper side of the right end of the gas temporary storage tank (1) is fixedly connected to a push handle (12); the lower end of the gas temporary storage tank (1) is fixedly connected to an annular sliding wheel (13) distributed at equal intervals.

2. The gas extraction device for improving gas extraction concentration in coal mine tunnels according to claim 1, characterized in that: The depth adjustment component (5) comprises a fixing plate (51); long threaded columns (52) symmetrically distributed up and down are inserted into the fixing plate (51); an adjustment nut (53) is threadedly connected to the outer side of the right end of the long threaded column (52); a return spring (54) is sleeved on the outer side of the left end of the long threaded column (52); the right end of the return spring (54) is fixedly connected to the left end of the fixing plate (51); and the extraction tube (4) is fixedly connected to the fixing plate (51).

3. The gas extraction device for improving gas extraction concentration in coal mine tunnels according to claim 1, characterized in that: The plugging assembly (6) comprises a movable plugging plate (61); an inner sealing ring (62) is fixedly connected to the inner side of the movable plugging plate (61); the inner diameter of the inner sealing ring (62) is equal to the outer diameter of the extraction tube (4); a sealing groove (63) is formed at the left end of the movable plugging plate (61); and a sealing gasket (64) is fixedly connected to the inner side of the sealing groove (63).

4. The gas extraction device for improving gas extraction concentration in coal mine tunnels according to claim 1, characterized in that: The anti-collision assembly (8) comprises an inner anti-collision plate (81); an elliptical shock absorbing block (82) distributed in an annular manner and at equal intervals is fixedly connected to the inner side of the inner anti-collision plate (81); the elliptical shock absorbing block (82) is fixedly connected to the gas temporary storage tank (1); an insertion rod (83) distributed in an annular manner and at equal intervals is inserted into the inner anti-collision plate (81); an outer side of the insertion rod (83) is fixedly connected to the outer side of the insertion rod (84).

5. The gas extraction device for improving gas extraction concentration in coal mine tunnels according to claim 4, characterized in that: A shock absorbing spring (85) is fixedly connected between the inner anti-collision plate (81) and the outer anti-collision plate (84); the shock absorbing spring (85) is sleeved on the outer side of the insertion rod (83).

6. The gas extraction device for improving gas extraction concentration in coal mine tunnels according to claim 1, characterized in that: The filtration and enrichment assembly (10) comprises a filter housing (101); a downwardly inclined air outlet (102) is installed at the left end of the filter housing (101); and a molecular sieve gas separation membrane (103) is fixedly connected above the air outlet (102) in the filter housing (101).

7. The gas extraction device for improving gas extraction concentration in coal mine tunnels according to claim 1, characterized in that: The second air inlet pipe (11) is connected to the upper cover (7); and scale lines are provided on the surface of the extraction pipe (4).

Images