Gas extraction grouting plugging device

Abstract

The utility model discloses a gas extraction grouting plugging device, which relates to the technical field of gas extraction grouting, and comprises a fixed pipe, an inner through pipe is fixedly connected in the fixed pipe, one end of the inner through pipe is fixedly connected with an extraction opening, one end of the fixed pipe is fixedly connected with an end sealing plate, and the end sealing plate is fixedly connected with an end cover. A grouting hole is formed in one side of the end sealing plate, a plurality of sliding grooves are formed in the two ends of the fixing pipe correspondingly, rotating seats are fixedly connected to the ends, away from the end sealing plate, of the sliding grooves correspondingly, and slope anchor plates are rotationally connected into the rotating seats correspondingly. The slope anchor plate and the pushing assembly are arranged, so that the slope anchor plate can be clamped in a drill hole during plugging, anchoring is formed, then the fixing pipe is fixed, displacement of the fixing pipe during grouting is avoided, a grouting space can be formed during working through the end sealing plate and the air bag, and the grouting effect is improved. And after grouting, anchoring and grouting of the slope anchor plate can form double fixation.

Description

Technical Field

[0001] This utility model relates to the field of gas drainage grouting technology, specifically a gas drainage grouting and sealing device. Background Technology

[0002] Gas drainage is one of the important ways to control gas in coal mines. During the gas drainage process, gaps will be generated between the drainage pipe and the inner wall of the borehole. These gaps can lead to gas leakage, which is very dangerous. To eliminate this problem, grouting is generally used to seal the gaps.

[0003] For example, the multi-stage segmented grouting and sealing device for gas drainage boreholes proposed in authorization announcement number CN210768693U includes an inflatable bag, a return water pipe and a grouting pipe. The key point is that the inflatable bag is a cylindrical inflatable bag, and multiple annular grouting grooves are recessed on the outer periphery of the cylindrical inflatable bag. The protruding sections at both ends of the multiple annular grouting grooves are grouting isolation platforms. This grouting and sealing device uses a multi-end grouting method to achieve the sealing of the borehole.

[0004] While the aforementioned device can seal the gas extraction pipe from the borehole wall, it relies solely on an inflatable bladder for pre-grouting fixation. However, due to the bladder's flexibility, the entire device is prone to displacement during grouting. Furthermore, the bladder must be removed after grouting before the gas extraction pipe can be installed. Since the solidified grout cannot guarantee a seal between the bladder-supported grout and the extraction pipe, polyurethane sealing adhesive is required for further sealing, a cumbersome process. Therefore, we provide a gas extraction grouting and sealing device to address these issues. Utility Model Content

[0005] The purpose of this invention is to provide a gas extraction grouting and sealing device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A gas extraction grouting and plugging device includes a fixed pipe, an inner pipe fixedly connected inside the fixed pipe, an extraction port fixedly connected to one end of the inner pipe, an end sealing plate fixedly connected to one end of the fixed pipe, a grouting hole opened on one side of the end sealing plate, several sliding grooves opened at both ends of the fixed pipe, a rotating seat fixedly connected to the end of each sliding groove away from the end sealing plate, an inclined anchor plate rotatably connected inside each rotating seat, a pushing component for pushing the inclined anchor plate to expand inside the fixed pipe, and a plugging component for plugging the borehole in the middle of the fixed pipe.

[0008] As a further embodiment of this utility model: the pushing component includes an inner sliding tube, which is slidably connected to the inner wall of the fixed tube. A plurality of driving protrusions that cooperate with the inclined anchor plate are fixedly connected to the surface of the inner sliding tube. The driving protrusions are slidably connected to the sliding groove. A plurality of pushing rods are fixedly connected to one end of the inner sliding tube. The pushing rods are slidably connected to the end sealing plate. One end of the inner tube is also provided with a pushing component for pushing the pushing rods to move.

[0009] As a further improvement of this utility model, ball bearings are installed at the end of the push rod away from the inner sliding tube.

[0010] As a further embodiment of this utility model: the pushing component includes an external thread, which is formed at the position where the fixed tube passes through the fixed tube, and a nut is threaded onto the external thread, with a ring at one end of the nut that mates with a ball.

[0011] As a further embodiment of this utility model: the sealing component includes an airbag, the airbag is located on the fixed tube away from the end sealing plate, and the end sealing plate is provided with an inflation component for inflating the airbag.

[0012] As a further embodiment of this utility model: the inflation assembly includes an inflation tube, which is inserted through an end sealing plate. One end of the end sealing plate is connected to the airbag, and the end of the inflation tube away from the airbag is connected to an inflation port. A one-way air inlet valve is connected to the inflation tube.

[0013] As a further improvement of this utility model, a rubber pad is attached to the side of the end sealing plate near the airbag.

[0014] As a further improvement of this utility model, an auxiliary rod is fixedly connected to one side of the end sealing plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention utilizes a sloping anchor plate and a pushing component to secure the anchor plate in the borehole during sealing, thus anchoring the fixed pipe and preventing displacement during grouting. The end sealing plate and airbag create a grouting space during operation. After grouting, the anchor plate and grouting provide dual fixation. Furthermore, the inclusion of an inner pipe and extraction port allows the extraction port and inner pipe to be used as extraction pipes after the grout has solidified, eliminating the need for reinstallation. Since the fixed pipe and borehole surface are filled with grout, a good seal is ensured, eliminating the need for secondary sealing operations and making construction extremely convenient. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure at the other end of the present invention.

[0020] Figure 4 This is a partial structural schematic diagram of the present invention.

[0021] The components are: 1. Fixed pipe; 2. Airbag; 3. Inflation pipe; 4. Inflation port; 5. One-way air inlet valve; 6. External thread; 7. Nut; 8. Auxiliary rod; 9. Push rod; 10. End sealing plate; 11. Inner through pipe; 12. Rotating seat; 13. Inclined anchor plate; 14. Grouting hole; 15. Extraction port; 16. Slide groove; 17. Ball bearing; 18. Inner sliding pipe; 19. Drive protrusion. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4 In this embodiment of the present invention, a gas extraction grouting and sealing device includes a fixed pipe 1, an inner through pipe 11 fixedly connected inside the fixed pipe 1, an extraction port 15 fixedly connected to one end of the inner through pipe 11, an end sealing plate 10 fixedly connected to one end of the fixed pipe 1, a grouting hole 14 opened on one side of the end sealing plate 10, an auxiliary rod 8 fixedly connected to one side of the end sealing plate 10, and a plurality of sliding grooves 16 opened at both ends of the fixed pipe 1. A rotating seat 12 is fixedly connected to the end of each sliding groove 16 away from the end sealing plate 10. A rotating seat 12 is provided inside each rotating seat 12. The fixed pipe 1 is dynamically connected with an inclined anchor plate 13. The fixed pipe 1 is equipped with a pushing component for expanding the inclined anchor plate 13. The fixed pipe 1 is also equipped with a sealing component for sealing the borehole. The inclined anchor plate 13 and the pushing component can be used to lock the inclined anchor plate 13 into the borehole during sealing, forming an anchor, thereby fixing the fixed pipe 1 and preventing the fixed pipe 1 from shifting during grouting. Then, the end sealing plate 10 and the sealing component can form a grouting space during operation. After grouting, the anchoring of the inclined anchor plate 13 and the grouting can form a double fixation, ensuring the reliability of the sealing.

[0024] The pushing assembly includes an inner sliding tube 18, which is slidably connected to the inner wall of the fixed tube 1. Several driving protrusions 19 that cooperate with the inclined anchor plate 13 are fixedly connected to the surface of the inner sliding tube 18. The driving protrusions 19 are slidably connected to the sliding groove 16. Several pushing rods 9 are fixedly connected to one end of the inner sliding tube 18. The pushing rods 9 are slidably connected to the end sealing plate 10. One end of the inner through tube 11 is also provided with a pushing assembly for pushing the pushing rods 9 to move. The end of the pushing rods 9 away from the inner sliding tube 18 is equipped with ball bearings 17. When fixing the fixed tube 1, the pushing assembly can drive the pushing rods 9 to move towards the airbag 2. Then the pushing rods 9 drive the inner sliding tube 18 to move accordingly. The movement of the inner sliding tube 18 drives the driving protrusions 19 to move. The movement of the driving protrusions 19 can push the inclined anchor plate 13 to rotate around the rotating seat 12, thereby expanding and opening, and thus anchoring the fixed tube 1 in the borehole.

[0025] The pusher assembly includes an external thread 6, which is located at the point where the fixed tube 1 exits. A nut 7 is threaded onto the external thread 6. One end of the nut 7 is provided with a ring that mates with a ball bearing 17. When the pusher rod 9 is pushed, a wrench can be used to rotate the nut 7. The rotation of the nut 7 allows it to move along the external thread 6, and the movement of the nut 7 can push the pusher rod 9 to move.

[0026] The sealing assembly includes an airbag 2, which is located on the fixed tube 1 away from the end sealing plate 10. The end sealing plate 10 is provided with an inflation assembly for inflating the airbag 2. The inflation assembly includes an inflation tube 3, which passes through the end sealing plate 10. One end of the end sealing plate 10 is connected to the airbag 2, and the end of the inflation tube 3 away from the airbag 2 is connected to an inflation port 4. A one-way air inlet valve 5 is connected to the inflation tube 3, and a rubber pad is attached to the side of the end sealing plate 10 near the airbag 2. During inflation, the inflation device is connected to the inflation port 4, and then the airbag 2 is inflated through the inflation tube 3. The one-way air inlet valve 5 allows gas to enter, and because the gas does not return due to the one-way structure, the airbag 2 remains inflated.

[0027] The working principle of this utility model is as follows: First, the dust layer inside the borehole is cleaned. Then, the outer wall of the borehole opening area is ground smooth. Next, the fixing tube 1 is inserted into the borehole, and the end sealing plate 10 is pressed tightly against the borehole opening. Then, the auxiliary rod 8 is held or secured with a tool. After the auxiliary rod 8 is held or secured, a wrench is used to rotate the nut 7. The rotation of the nut 7 allows it to move on the external thread 6. The movement of the nut 7 pushes the push rod 9 to move. The push rod 9 drives the inner sliding tube 18 to move accordingly. The movement of the inner sliding tube 18 drives the drive protrusion 19 to move. The movement of the drive protrusion 19 pushes the inclined anchor plate 13 to rotate the seat 12. Rotating around the center, the expansion and opening are achieved. After the inclined anchor plate 13 is opened, a barbed structure can be formed, making it impossible to pull out the fixing tube 1. Thus, the fixing tube 1 can be anchored in the borehole. If there is a large gap between the end sealing plate 10 and the borehole opening at this time, the end sealing plate 10 can be tapped to make the end sealing plate 10 fit with the borehole opening. Then, the inflation device is connected to the inflation port 4, and then the airbag 2 is inflated through the inflation pipe 3. After inflation, a grouting space is formed between the end sealing plate 10 and the airbag 2. Then, grouting material is injected into the grouting space through the grouting hole 14. After grouting is completed, the grouting hole 14 is sealed with a plug.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Although this specification describes embodiments, not every embodiment contains only one technical solution. This method of description is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A gas extraction grouting and sealing device, comprising a fixed pipe (1), characterized in that: The fixed pipe (1) is fixedly connected to an inner tube (11). One end of the inner tube (11) is fixedly connected to an extraction port (15). One end of the fixed pipe (1) is fixedly connected to an end sealing plate (10). A grouting hole (14) is opened on one side of the end sealing plate (10). Several sliding grooves (16) are opened at both ends of the fixed pipe (1). A rotating seat (12) is fixedly connected at the end of the sliding groove (16) away from the end sealing plate (10). An inclined anchor plate (13) is rotatably connected inside the rotating seat (12). A pushing component for pushing the inclined anchor plate (13) to expand is provided inside the fixed pipe (1). A sealing component for sealing the borehole is also provided in the middle of the fixed pipe (1).

2. The gas extraction grouting and sealing device according to claim 1, characterized in that, The pushing assembly includes an inner sliding tube (18), which is slidably connected to the inner wall of the fixed tube (1). Several driving protrusions (19) that cooperate with the inclined anchor plate (13) are fixedly connected to the surface of the inner sliding tube (18). The driving protrusions (19) are slidably connected to the sliding groove (16). Several push rods (9) are fixedly connected to one end of the inner sliding tube (18). The push rods (9) are slidably connected to the end sealing plate (10). One end of the inner through tube (11) is also provided with a pushing assembly for pushing the push rods (9) to move.

3. The gas extraction grouting and sealing device according to claim 2, characterized in that, The push rod (9) is equipped with ball bearings (17) at the end away from the inner slide tube (18).

4. The gas extraction grouting and plugging device according to claim 3, characterized in that, The push assembly includes an external thread (6), which is located at the position where the fixed tube (1) passes through the fixed tube (1). A nut (7) is threaded onto the external thread (6), and one end of the nut (7) is provided with a ring that mates with a ball (17).

5. A gas extraction grouting and sealing device according to claim 1, characterized in that, The sealing assembly includes an airbag (2), which is located on the fixed tube (1) away from the end sealing plate (10). The end sealing plate (10) is provided with an inflation assembly for inflating the airbag (2).

6. A gas extraction grouting and plugging device according to claim 5, characterized in that, The inflation assembly includes an inflation tube (3), which is inserted through an end cap (10). One end of the end cap (10) is connected to the airbag (2). An inflation port (4) is connected to the end of the inflation tube (3) away from the airbag (2). A one-way air inlet valve (5) is connected to the inflation tube (3).

7. A gas extraction grouting and plugging device according to claim 1, characterized in that, A rubber pad is attached to the side of the end cap (10) near the airbag (2).

8. A gas extraction grouting and plugging device according to claim 1, characterized in that, An auxiliary rod (8) is fixedly connected to one side of the end cap (10).

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