Coal mine gas extraction hole sealing device

Abstract

The utility model discloses a coal mine gas extraction hole sealing device in the related technical field of gas extraction, which comprises a connecting mechanism, the connecting mechanism comprises a sampling pipe, an extraction pipe is movably inserted in the sampling pipe, the outer wall of the extraction pipe is fixedly sleeved with a connecting disc, the connecting disc is connected with the sampling pipe through a bolt, and the sampling pipe is connected with the connecting disc through the bolt. The outer wall of the sampling pipe is movably sleeved with a sealing ring, and the outer wall of the sampling pipe is movably provided with a first positioning piece for positioning a bolt; when an extraction pipe needs to be plugged, the rotary gear disc drives the driven gear and the plugging discs to rotate and reset, the extraction pipe is plugged through the plugging discs, the four plugging discs can move synchronously, and therefore plugging of the extraction pipe is more convenient; and the circular pipe and the positioning rod are conveniently pulled to move through the second spring, so that the positioning rod is promoted to be inserted into the positioning hole and fix the position of the circular pipe, and the possibility that the extraction pipe is automatically opened or blocked due to automatic rotation of the circular pipe and the inner gear is reduced.

Description

Technical Field

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

[0002] During the coal mining process, a large amount of gas in the coal seam needs to be extracted through extraction technology for reuse; the basic steps of gas extraction technology are to first drill a hole into the coal seam, then send the gas extraction pipe into the borehole, and then seal the hole; since there is a certain gap between the gas extraction pipe and the borehole wall, if this gap is not sealed and the seal is not guaranteed to be dense, otherwise there will be air-permeable gaps and the gas in the coal seam cannot be extracted.

[0003] An existing patent (Announcement No.: CN216866637U) discloses a device for plugging coal mine gas extraction sampling holes, comprising a pipe with a mounting plate sleeved and mounted on the outer wall of the pipe, an outlet pipe extending through the top of the pipe, a pipe interface at the top of the outlet pipe, and first and second plugging plates at the bottom of the outlet pipe. By installing the first and second plugging plates, rotating the rotating plate drives the threaded rod to rotate, thereby driving the slider to move within the chute, thereby driving the first and second plugging plates to move and cooperate, thereby plugging the outlet pipe. However, this technical solution still has shortcomings, as follows:

[0004] When using this device, the operator needs to rotate the two threaded rods multiple times to control the movement of the sealing plate to seal the outlet pipe. This makes sealing the outlet pipe quite troublesome. To this end, we propose a coal mine gas extraction hole sealing device to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the present invention to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0006] Therefore, the purpose of the utility model is to provide a coal mine gas extraction hole sealing device, which can solve the problem that the operator needs to rotate the two threaded rods multiple times when using the existing device, so as to control the movement of the sealing plate to seal the air outlet pipe through the two threaded rods, and thus the sealing of the air outlet pipe is more troublesome.

[0007] In order to solve the above technical problems, the utility model provides a coal mine gas extraction hole sealing device, which adopts the following technical solutions: comprising a connecting mechanism, which includes a sampling tube, wherein the extraction tube is movably inserted into the sampling tube, the outer wall of the extraction tube is fixedly sleeved with a connecting disk, and the connecting disk is connected to the sampling tube by means of a bolt, the outer wall of the sampling tube is movably sleeved with a sealing ring, and the outer wall of the sampling tube is movably provided with a first positioning member for positioning the bolt;

[0008] The sealing mechanism includes four sealing disks. Four movable grooves are opened on the inner wall of the sampling tube. The four sealing disks are hingedly arranged in the four movable grooves through a hinge shaft. The upper end of the hinge shaft is fixedly sleeved with a driven gear. The outer wall of the extraction tube is movable sleeved with a gear disk, and the gear disk is engaged with the driven gear.

[0009] By adopting the above technical solution, this solution first inserts the extraction tube into the sampling tube and makes the connecting disk fit with the sampling tube, and then fixes the extraction tube and the sampling tube together through bolts. At this time, the extraction tube is sealed by four sealing disks, and then the gear disk is rotated to drive the driven gear and the sealing disk to rotate, thereby prompting the extraction tube to open.

[0010] Optionally, the connecting disk includes a first circular ring and a second circular ring, the first circular ring and the second circular ring are connected by setting an oblique support, the second circular ring is movably sleeved on the gear disk, and the second circular ring is movably inserted in the sealing ring and fits against the top surface of the sampling tube.

[0011] By adopting the above technical solution, this solution facilitates connecting the first ring and the second ring together through the diagonal support, and then facilitates fixing the second ring on the sampling tube through bolts, so that the sampling tube is supported by the cooperation of the diagonal support and the second ring.

[0012] Optionally, a groove corresponding to the first positioning member is formed on the inner side of the sealing ring.

[0013] By adopting the above technical solution, the present solution facilitates increasing the sealing performance of the connection between the sampling tube and the extraction tube by cooperating with the sealing ring and the connecting disk.

[0014] Optionally, the outer wall of the sampling tube is provided with a positioning groove for installing a first positioning member, the first positioning member is connected to the inner wall of the positioning groove by sleeve-mounted a first spring, one end of the first positioning member extends out of the positioning groove and is inserted into the groove, and the shape of the first positioning member is a "Z" shape.

[0015] By adopting the above technical solution, this solution facilitates pushing the first positioning member to move and insert into the groove through the first spring. When the operator rotates the sealing ring, the groove is separated from the first positioning member, thereby prompting the first positioning member to move and conflict with the bolt, thereby reducing the possibility of the bolt loosening.

[0016] Optionally, the sealing disk is fan-shaped, and a receiving groove for receiving the sealing disk is provided in the sampling tube, and the receiving groove is connected to the movable groove.

[0017] By adopting the above technical solution, when the sealing disk rotates, the extraction tube is prompted to open, and at this time the sealing disk can be easily stored through the storage groove.

[0018] Optionally, the gear plate includes a circular tube and an internal gear, the circular tube is movably sleeved on the extraction tube, the internal gear is fixedly arranged on the lower end of the inner wall of the circular tube, and the internal gear is engaged with the driven gear.

[0019] By adopting the above technical solution, the circular tube is used to drive the internal gear to rotate, and the rotation of the internal gear drives the driven gear and the sealing disk to rotate, thereby realizing the opening and sealing of the extraction tube through the sealing disk.

[0020] Optionally, a second positioning piece is movably provided on the outer wall of the circular tube, and a plurality of positioning holes corresponding to the second positioning piece are opened on the outer wall of the extraction tube.

[0021] By adopting the above technical solution, this solution facilitates fixing the round tube on the extraction tube by plugging the second positioning member into the positioning hole, thereby reducing the possibility of the extraction tube automatically opening or blocking due to automatic rotation of the round tube and the internal gear.

[0022] Optionally, the second positioning member includes a positioning rod and a disc, one end of the positioning rod passes through the circular tube and is inserted into the positioning hole, the disc is fixedly sleeved on the other end of the positioning rod, and the disc is connected to the outer wall of the circular tube by sleeved with a second spring.

[0023] By adopting the above technical solution, when the gear plate needs to be rotated, the positioning rod is pulled to move so as to separate from the positioning hole, thereby causing the gear plate to lose its limit, thereby facilitating the operator to rotate the gear plate.

[0024] In summary, the present invention has at least one of the following beneficial effects:

[0025] When the extraction pipe needs to be blocked, the rotating gear plate drives the driven gear and the blocking plate to rotate and reset, thereby blocking the extraction pipe through the blocking plate. The four blocking plates can move synchronously, making it more convenient to block the extraction pipe.

[0026] The second spring facilitates pulling the round tube and the positioning rod to move, thereby prompting the positioning rod to be inserted into the positioning hole and fix the position of the round tube, thereby reducing the possibility of the round tube and the internal gear automatically rotating and causing the extraction tube to automatically open or block. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0029] Figure 2 This is a schematic diagram of the three-dimensional expanded structure of the utility model;

[0030] Figure 3 It is a partial three-dimensional structural cross-sectional view of the utility model;

[0031] Figure 4 This is a partial three-dimensional expanded structural cross-sectional view of the sealing ring of the utility model;

[0032] Figure 5 This is a partial three-dimensional expanded structural cross-sectional view of the gear plate of the utility model.

[0033] Explanation of Reference Numerals: 100, connecting mechanism; 101, sampling tube; 101a, positioning groove; 101b, receiving groove; 102, extraction tube; 102a, positioning hole; 103, connecting plate; 103a, first circular ring; 103b, second circular ring; 103c, diagonal brace; 104, bolt; 105, sealing ring; 105a, groove; 106, first positioning member; 106a, first spring;

[0034] 200, blocking mechanism; 201, blocking disk; 202, movable groove; 203, driven gear; 204, gear disk; 204a, round tube; 204b, internal gear; 204c, second positioning member; 204c1, positioning rod; 204c2, disk; 204c3, second spring. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-Figure 5 The utility model is described in further detail.

[0036] Example 1, refer to Figure 1-Figure 5 In this embodiment, in order to solve the problem that the operator of the existing device needs to rotate the two threaded rods multiple times during use, thereby controlling the movement of the sealing plate to seal the gas outlet pipe through the two threaded rods, which makes it more troublesome to seal the gas outlet pipe, the utility model discloses a coal mine gas extraction hole sealing device.

[0037] It includes a connecting mechanism 100, which includes a sampling tube 101, in which an extraction tube 102 is movably inserted, and a connecting disk 103 is fixedly sleeved on the outer wall of the extraction tube 102. The connecting disk 103 is connected to the sampling tube 101 by a bolt 104. First, the extraction tube 102 is inserted into the sampling tube 101, and the connecting disk 103 is forced to fit with the sampling tube 101, and then the extraction tube 102 and the sampling tube 101 are fixed together by the bolt 104.

[0038] A sealing ring 105 is movably provided on the outer wall of the sampling tube 101 , and the sealing ring 105 cooperates with the connecting plate 103 to increase the sealing performance of the connection between the sampling tube 101 and the extraction tube 102 .

[0039] A first positioning member 106 for positioning the bolt 104 is movably provided on the outer wall of the sampling tube 101 . The first positioning member 106 facilitates positioning of the bolt 104 , thereby reducing the possibility of the bolt 104 loosening.

[0040] The sealing mechanism 200 includes four sealing disks 201. Four movable grooves 202 are provided on the inner wall of the sampling tube 101. The four sealing disks 201 are hingedly arranged in the four movable grooves 202 through a hinge shaft. The shape of the sealing disk 201 is fan-shaped. A receiving groove 101b for receiving the sealing disk 201 is provided in the sampling tube 101. The receiving groove 101b is connected to the movable groove 202. When the sealing disk 201 rotates, it prompts the extraction tube 102 to open. At this time, the sealing disk 201 is conveniently received through the receiving groove 101b.

[0041] A driven gear 203 is fixedly sleeved on the upper end of the hinged shaft, and a gear plate 204 is movably sleeved on the outer wall of the extraction tube 102. The gear plate 204 is engaged with the driven gear 203. The gear plate 204 includes a circular tube 204a and an internal gear 204b. The circular tube 204a is movably sleeved on the extraction tube 102, and the internal gear 204b is fixedly set at the lower end of the inner wall of the circular tube 204a. The internal gear 204b is engaged with the driven gear 203. The circular tube 204a can easily drive the internal gear 204b to rotate. As the internal gear 204b rotates, it is easy to drive the driven gear 203 and the sealing disk 201 to rotate, thereby realizing the opening and blocking of the extraction tube 102 through the blocking disk 201.

[0042] The connecting plate 103 includes a first ring 103a and a second ring 103b. The first ring 103a and the second ring 103b are connected by setting a diagonal support 103c. The second ring 103b is movably mounted on the gear plate 204, and the second ring 103b is movably inserted into the sealing ring 105 and fits with the top surface of the sampling tube 101. The diagonal support 103c is used to facilitate the connection between the first ring 103a and the second ring 103b, and then the bolt 104 is used to facilitate the fixation of the second ring 103b on the sampling tube 101, so that the diagonal support 103c and the second ring 103b cooperate to support the extraction tube 102, thereby increasing the stability of the extraction tube 102 when extracting gas.

[0043] The specific working principle is as follows: first, the extraction tube 102 is inserted into the sampling tube 101, and the connecting disk 103 is forced to fit with the sampling tube 101. Then, the extraction tube 102 and the sampling tube 101 are fixed together by the bolt 104. At this time, the four blocking disks 201 cooperate to block the extraction tube 102. Then, the rotating gear disk 204 drives the driven gear 203 and the blocking disk 201 to rotate, thereby causing the extraction tube 102 to open.

[0044] When the extraction tube 102 needs to be sealed, the rotating gear plate 204 drives the driven gear 203 and the sealing plate 201 to rotate and reset, thereby sealing the extraction tube 102 through the sealing plate 201, and the four sealing plates 201 can move synchronously, so it is more convenient to seal the extraction tube 102.

[0045] Example 2, refer to Figures 1-4 In order to solve the problem that some existing devices lack anti-loosening mechanisms when bolts are connected, in this embodiment, based on the same concept as the above-mentioned embodiment 1, the coal mine gas extraction hole sealing device further includes:

[0046] A groove 105 a corresponding to the first positioning member 106 is formed on the inner side of the sealing ring 105 , and the sealing ring 105 cooperates with the connecting plate 103 to increase the sealing performance of the connection between the sampling tube 101 and the extraction tube 102 .

[0047] The outer wall of the sampling tube 101 is provided with a positioning groove 101a for installing the first positioning member 106. The first positioning member 106 is connected to the inner wall of the positioning groove 101a by sleeving a first spring 106a. One end of the first positioning member 106 extends out of the positioning groove 101a and is inserted into the groove 105a. The shape of the first positioning member 106 is "middle" shaped. The first spring 106a facilitates the movement of the first positioning member 106 and its insertion into the groove 105a. When the operator rotates the sealing ring 105, the groove 105a is separated from the first positioning member 106, thereby causing the first positioning member 106 to move and abut against the bolt 104, further reducing the possibility of the bolt 104 loosening, and as the first positioning member 106 moves, the first spring 106a is compressed and deformed.

[0048] The specific working principle is: the first spring 106a facilitates the movement of the first positioning member 106 and its insertion into the groove 105a. When the operator rotates the sealing ring 105, the groove 105a is separated from the first positioning member 106, thereby causing the first positioning member 106 to move and abut against the bolt 104, further reducing the possibility of the bolt 104 loosening.

[0049] Embodiment 3, referring to Figure 3-Figure 5 , based on the same concept as the above Embodiment 1, this coal mine gas drainage hole plugging device further includes:

[0050] A second positioning member 204c is movably arranged on the outer wall of the circular tube 204a. A plurality of positioning holes 102a corresponding to the second positioning member 204c are provided on the outer wall of the drainage tube 102. By inserting the second positioning member 204c into the positioning holes 102a, the circular tube 204a can be fixed on the drainage tube 102, thereby reducing the possibility that the circular tube 204a and the internal gear 204b rotate automatically, causing the drainage tube 102 to open or block automatically.

[0051] The second positioning member 204c includes a positioning rod 204c1 and a disc 204c2. One end of the positioning rod 204c1 passes through the circular tube 204a and is inserted into the positioning hole 102a. The disc 204c2 is fixedly sleeved on the other end of the positioning rod 204c1. The disc 204c2 is connected to the outer wall of the circular tube 204a by sleeving a second spring 204c3. The second spring 204c3 facilitates the pulling of the circular tube 204a and the positioning rod 204c1 to move, thereby causing the positioning rod 204c1 to be inserted into the positioning hole 102a and fixing the position of the circular tube 204a. When the gear disc 204 needs to be rotated, by pulling the positioning rod 204c1 to move, the positioning rod 204c1 is separated from the positioning hole 102a, thereby causing the gear disc 204 to lose its limit, and further facilitating the operator to rotate the gear disc 204.

[0052] The specific working principle is: the second spring 204c3 is used to facilitate pulling the round tube 204a and the positioning rod 204c1 to move, thereby prompting the positioning rod 204c1 to be inserted into the positioning hole 102a and fix the position of the round tube 204a. When the gear plate 204 needs to be rotated, the positioning rod 204c1 is pulled to move to separate the positioning rod 204c1 from the positioning hole 102a, thereby prompting the gear plate 204 to lose its limit, thereby facilitating the operator to rotate the gear plate 204.

[0053] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A coal mine gas extraction hole sealing device, characterized by: Including A connecting mechanism (100), which includes a sampling tube (101). An extraction tube (102) is movably inserted into the sampling tube (101). A connecting disk (103) is fixedly sleeved on the outer wall of the extraction tube (102). The connecting disk (103) is connected to the sampling tube (101) by bolts (104). A sealing ring (105) is movably sleeved on the outer wall of the sampling tube (101). A first positioning member (106) for positioning the bolt (104) is movably arranged on the outer wall of the sampling tube (101). A plugging mechanism (200), which includes four plugging disks (201). Four moving grooves (202) are formed in the inner wall of the sampling tube (101). The four plugging disks (201) are hinged in the four moving grooves (202) through hinge shafts. A driven gear (203) is fixedly sleeved on the upper end of the hinge shaft. A gear disk (204) is movably sleeved on the outer wall of the extraction tube (102). The gear disk (204) meshes with the driven gear (203).

2. The coal mine gas extraction hole sealing device according to claim 1, characterized in that: The connecting disk (103) includes a first ring (103a) and a second ring (103b). The first ring (103a) and the second ring (103b) are connected by diagonal braces (103c). The second ring (103b) is movably sleeved on the gear disk (204), and the second ring (103b) is movably inserted into the sealing ring (105) and abuts against the top surface of the sampling tube (101).

3. The coal mine gas extraction hole sealing device according to claim 1, characterized in that: A groove (105a) corresponding to the first positioning member (106) is formed in the inner side of the sealing ring (105).

4. The coal mine gas extraction hole sealing device according to claim 3, characterized in that: A positioning groove (101a) for installing the first positioning member (106) is formed in the outer wall of the sampling tube (101). The first positioning member (106) is connected to the inner wall of the positioning groove (101a) by sleeving a first spring (106a). One end of the first positioning member (106) extends out of the positioning groove (101a) and is inserted into the groove (105a). The shape of the first positioning member (106) is "middle" shaped.

5. The coal mine gas extraction hole sealing device according to claim 1, characterized in that: The shape of the plugging disk (201) is fan-shaped. A storage groove (101b) for storing the plugging disk (201) is formed in the sampling tube (101). The storage groove (101b) is communicated with the moving groove (202).

6. The coal mine gas extraction hole sealing device according to claim 1, characterized in that: The gear disk (204) includes a circular tube (204a) and an internal gear (204b). The circular tube (204a) is movably sleeved on the extraction tube (102). The internal gear (204b) is fixedly arranged at the lower end of the inner wall of the circular tube (204a). The internal gear (204b) meshes with the driven gear (203).

7. The coal mine gas extraction hole sealing device according to claim 6, characterized in that: A second positioning member (204c) is movably arranged on the outer wall of the circular tube (204a). A plurality of positioning holes (102a) corresponding to the second positioning member (204c) are formed in the outer wall of the extraction tube (102).

8. The coal mine gas extraction hole sealing device according to claim 7, characterized in that: The second positioning member (204c) comprises a positioning rod (204c1) and a disc (204c2); one end of the positioning rod (204c1) passes through the circular tube (204a) and is inserted into the positioning hole (102a); the disc (204c2) is fixedly sleeved on the other end of the positioning rod (204c1); and the disc (204c2) is connected to the outer wall of the circular tube (204a) by sleeve-mounting a second spring (204c3).

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