A hole sealer for coal mine separation layer grouting hole

Abstract

The utility model discloses a kind of hole packers of coal mine interlayer grouting hole, including top seat, the corner position at the bottom end of top seat is all abutted and installed guide column, the bottom end of several guide columns is fixed with base, the outer wall of guide column above base is sleeved with placing piece seat, the outer surface of the both sides of placing piece seat is all hinged with two vertical boards, the inner wall of vertical board both ends is respectively hinged with the surface of top seat and base, the both sides of base bottom end are all equipped with side bracing plate, the bottom end of two side bracing plates is fixedly installed with base plate, base plate bottom end is installed with grouting cylinder, grouting cylinder bottom end is installed with grouting head, the outer wall on grouting cylinder lower end is fixedly installed with sealing ring, the outer wall on the both sides of base plate is all equipped with positioning plate. The utility model not only reduces the phenomenon of displacement in hole packer grouting plugging process, to ensure the plugging effect of hole packer to grouting hole, also reaches the purpose that grouting hole is easily and conveniently plugged, and reaches the purpose that plugging device is easily and conveniently disassembled and maintained.

Description

Technical Field

[0001] This utility model relates to the field of coal mining technology, specifically a sealing device for grouting holes in coal mines. Background Technology

[0002] During coal mining, as the coal face advances, the overlying strata move and deform, forming a delamination space. To control the subsidence of the overlying strata and reduce surface collapse, delamination grouting technology is usually used, which involves injecting grout into the delamination space to fill it and enhance the stability of the strata. The sealing quality of the grouting holes directly affects the grouting effect. Therefore, developing a sealing device for coal mine delamination grouting holes has important practical significance.

[0003] Referring to a sealing device for grouting reinforcement in coal mines (CN202023532U), the sealing device includes a metal tube. One end of the metal tube has a grout inlet communicating with the inner cavity of the tube, and the other end has a grout outlet communicating with the inner cavity of the tube. A rubber hose is provided around the metal tube, with both ends of the hose sealed to the ends of the metal tube. At least one through hole communicating with the inner cavity of the metal tube is provided on the outer wall of the middle section of the metal tube. A pressure metal plate is provided inside the grout outlet to seal the grout outlet. As can be seen from the above, although this sealing device can be used effectively, it is usually inconvenient to position and install the sealing device on the coal mine platform around the grouting hole. This makes the sealing device prone to displacement during the sealing process, thus affecting the sealing effect of the grouting hole, and further improvements are needed. Utility Model Content

[0004] The purpose of this utility model is to provide a sealing device for grouting holes in coal mines, in order to solve the problem mentioned in the background art that although the sealing device can be used well, it is usually inconvenient to position and place the sealing device on the coal mine platform around the grouting hole, which makes the sealing device prone to displacement during the sealing process of the grouting hole, thus affecting the sealing effect of the grouting hole.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sealing device for grouting holes in coal mines, comprising a top seat, with guide columns abutting at the corner positions of the bottom end of the top seat, a base fixed to the bottom end of several guide columns, a placement seat fitted on the outer wall of the guide columns above the base, two vertical plates bolted to the outer surfaces of both sides of the placement seat, the inner walls of both ends of the vertical plates being bolted to the surfaces of the top seat and the base respectively, side support plates provided on both sides of the bottom end of the base, a base plate fixedly installed at the bottom end of the two side support plates, a grouting cylinder installed at the bottom end of the base plate, a grouting head installed at the bottom end of the grouting cylinder, a sealing ring fixedly installed on the outer wall of the lower end of the grouting cylinder, positioning plates provided on both sides of the outer wall of the base plate, a threaded cylinder fixedly installed on one side of the bottom end of the positioning plate, a threaded rod installed in the internal thread of the threaded cylinder, the bottom end of the threaded rod extending to the outside of the threaded cylinder and having a drill bit, and the top end of the threaded rod penetrating the positioning plate and having a handle installed.

[0006] Preferably, a piston cylinder is fixedly installed inside the mounting base. The bottom end of the piston cylinder passes through the base and is provided with a grouting pipe. The bottom end of the grouting pipe extends into the interior of the grouting cylinder. The grouting pipe is provided so that the grout inside the piston cylinder can be transported and injected into the interior of the grouting head.

[0007] Preferably, a second side seat is bolted to the outer wall on both sides of the top seat, and a lower connecting seat is movably connected to the outer wall of several guide columns above the piston cylinder. A first side seat is bolted to the outer wall on both sides of the lower connecting seat. A V-shaped lifting arm is rotatably installed on the outer wall between the first side seat and the second side seat. The distance between the first side seat and the second side seat is adjusted by setting the V-shaped lifting arm.

[0008] Preferably, each of the V-shaped lifting arms has a nut seat installed on its inner wall, and a double-acting screw is installed on the internal threads of the two nut seats. One end of the double-acting screw extends to the outside of the nut seat and is equipped with a handle. By rotating the handle, the double-acting screw can be driven to rotate.

[0009] Preferably, a rectangular limiting seat is installed at the top of the lower connecting seat, and a U-shaped limiting seat is installed at the center of the bottom end of the top seat. The U-shaped limiting seat is movably connected to the bidirectional lead screw, and the bottom end of the U-shaped limiting seat abuts against the top end of the rectangular limiting seat to limit the shortest distance between the top seat and the lower connecting seat.

[0010] Preferably, a piston block is movably mounted on the upper end of the piston cylinder, and a piston rod is provided at the center of the top of the piston block. The top of the piston rod extends to the outside of the piston cylinder and is connected to the bottom of the lower connecting seat. The piston block moves downward inside the piston cylinder to discharge the slurry at the lower end of the piston cylinder for injection treatment.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the sealing device for the grouting hole of the coal mine not only reduces the displacement phenomenon during the grouting and sealing process of the sealing device to ensure the sealing effect of the sealing device on the grouting hole, but also achieves the purpose of easy sealing of the grouting hole and easy disassembly and maintenance of the sealing device.

[0012] (1) By inserting the grouting head into the grouting hole, the bottom end of the substrate contacts the coal mine platform outside the grouting hole. Then, the handle is rotated to drive the threaded rod to rotate and slide inside the threaded cylinder. The threaded rod is then screwed into the coal mine platform by the drill bit, which can perform the positioning and installation of the sealing device. This reduces the displacement phenomenon during the grouting and sealing process of the sealing device, and ensures the sealing effect of the sealing device on the grouting hole.

[0013] (2) The slurry is injected into the piston cylinder through the injection port on the surface of the piston cylinder and stored inside the piston cylinder. When the rotating handle drives the double screw to rotate, the two nut seats slide towards the middle on the outer wall of the double screw. At this time, the angle of the V-shaped lifting arm changes, so as to push the lower connecting seat to slide down on the outer wall of the guide column, and drive the piston block to slide down inside the piston cylinder through the piston rod, so as to inject the slurry inside the piston cylinder into the grouting hole through the grouting pipe and the grouting head, thereby achieving the purpose of easy and convenient sealing of the grouting hole;

[0014] (3) The upright plate is bolted to the outer surface of the top seat, the base and the placement seat so that the bolts can be removed to disassemble the upright plate. Since the second side seat and the first side seat are bolted to the outer wall of the top seat and the lower connecting seat respectively, the bolts can be removed to disassemble the second side seat and the first side seat. Then, the top seat, V-shaped lifting arm, placement seat and other components can be disassembled by pulling and rotating, so as to facilitate the disassembly and maintenance of the sealing device. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0017] Figure 3 This is a front view schematic diagram of the appearance structure of this utility model;

[0018] Figure 4 This is a frontal cross-sectional view of the present invention.

[0019] In the diagram: 1. Top seat; 2. Guide column; 3. Base; 4. Vertical plate; 5. Placement seat; 6. Piston cylinder; 7. Lower connecting seat; 8. First side seat; 9. Second side seat; 10. V-shaped lifting arm; 11. Nut seat; 12. Two-way lead screw; 13. Rotary handle; 14. U-shaped limit seat; 15. Rectangular limit seat; 16. Side support plate; 17. Base plate; 18. Grouting pipe; 19. Grouting cylinder; 20. Grouting head; 21. Sealing ring; 22. Positioning plate; 23. Threaded cylinder; 24. Rotary handle; 25. Threaded rod; 2501. Drill bit; 26. Piston rod; 27. Piston block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] Please see Figure 1-4 An embodiment of this utility model is provided: a sealing device for grouting holes in coal mines, including a top seat 1, with guide columns 2 abutting and installed at the corner positions of the bottom end of the top seat 1, a base 3 fixed at the bottom end of several guide columns 2, a placement seat 5 fitted on the outer wall of the guide columns 2 above the base 3, a piston cylinder 6 fixedly installed inside the placement seat 5, the bottom end of the piston cylinder 6 penetrating the base 3 and provided with a grouting pipe 18, the bottom end of the grouting pipe 18 extending into the interior of the grouting cylinder 19;

[0022] In use, the grouting pipe 18 is used to deliver the grout inside the piston cylinder 6 into the grouting head 20.

[0023] A second side seat 9 is bolted to the outer wall on both sides of the top seat 1. A lower connecting seat 7 is movably connected to the outer wall of several guide columns 2 above the piston cylinder 6. A first side seat 8 is bolted to the outer wall on both sides of the lower connecting seat 7. A V-shaped lifting arm 10 is rotatably installed on the outer wall between the first side seat 8 and the second side seat 9.

[0024] In use, the V-shaped lifting arm 10 is used to adjust the distance between the first side seat 8 and the second side seat 9;

[0025] Nut seats 11 are installed on the inner wall of the V-shaped lifting arm 10. Two double-acting screws 12 are installed on the internal threads of the two nut seats 11. One end of the double-acting screw 12 extends to the outside of the nut seat 11 and is equipped with a handle 13.

[0026] In use, the handle 13 is rotated to drive the bidirectional lead screw 12 to rotate;

[0027] A rectangular limiting seat 15 is installed at the top of the lower connecting seat 7, and a U-shaped limiting seat 14 is installed at the center of the bottom of the top seat 1. The U-shaped limiting seat 14 is movably connected to the bidirectional lead screw 12.

[0028] In use, the bottom end of the U-shaped limiting seat 14 abuts against the top end of the rectangular limiting seat 15 to limit the shortest distance between the top seat 1 and the lower connecting seat 7.

[0029] A piston block 27 is movably installed at the upper end of the piston cylinder 6. A piston rod 26 is provided at the center of the top of the piston block 27. The top of the piston rod 26 extends to the outside of the piston cylinder 6 and is connected to the bottom of the lower connecting seat 7.

[0030] In use, the piston block 27 moves downward inside the piston cylinder 6 to discharge the slurry at the lower end of the piston cylinder 6 for injection treatment.

[0031] Two vertical plates 4 are bolted to the outer surfaces of both sides of the base 5. The inner walls of both ends of the vertical plates 4 are bolted to the surfaces of the top base 1 and the base 3, respectively. Side support plates 16 are provided on both sides of the bottom of the base 3. A base plate 17 is fixedly installed at the bottom of the two side support plates 16. A grouting cylinder 19 is installed at the bottom of the base plate 17. A grouting head 20 is installed at the bottom of the grouting cylinder 19. A sealing ring 21 is fixedly installed on the outer wall of the lower end of the grouting cylinder 19. A positioning plate 22 is provided on both sides of the outer wall of the base plate 17. A threaded cylinder 23 is fixedly installed on one side of the bottom end of the positioning plate 22. A threaded rod 25 is installed in the internal thread of the threaded cylinder 23. The bottom end of the threaded rod 25 extends to the outside of the threaded cylinder 23 and is provided with a drill bit 2501. The top end of the threaded rod 25 passes through the positioning plate 22 and is provided with a handle 24.

[0032] In this embodiment, the grouting head 20 is first inserted into the grouting hole, so that the bottom end of the base plate 17 contacts the coal mine platform outside the grouting hole. Then, the handle 24 is rotated to drive the threaded rod 25 to rotate and slide inside the threaded cylinder 23, so that the threaded rod 25 is screwed into the coal mine platform through the drill bit 2501, thus positioning and installing the sealing device. Afterwards, grout is injected into the piston cylinder 6 through the injection port on the surface of the piston cylinder 6 and stored inside the piston cylinder 6. When the handle 13 is rotated to drive the bidirectional screw 12 to rotate, the two nut seats 11 slide towards the middle on the outer wall of the bidirectional screw 12. At this time, the angle of the V-shaped lifting arm 10 changes, so as to push the lower connecting seat 7 to slide down on the outer wall of the guide column 2, and so that the lower connecting seat 7 passes through the... The piston rod 26 drives the piston block 27 to slide downward inside the piston cylinder 6, so that the slurry inside the piston cylinder 6 is injected into the grouting hole through the grouting pipe 18 and the grouting head 20, thereby sealing the grouting hole. Finally, the vertical plate 4 is bolted to the outer surface of the top seat 1, the base 3 and the placement seat 5, so that the bolts can be removed to disassemble the vertical plate 4. Since the second side seat 9 and the first side seat 8 are respectively bolted to the outer wall of the top seat 1 and the lower connecting seat 7, the bolts can be removed to disassemble the second side seat 9 and the first side seat 8. Then, the top seat 1, the V-shaped lifting arm 10, the placement seat 5 and other components can be disassembled by pulling and rotating, so as to facilitate the disassembly and maintenance of the sealing device, thereby completing the use of the sealing device.

Claims

1. A sealing device for grouting holes in coal mines, characterized in that: The system includes a top seat (1), with guide posts (2) abutting at the corners of the bottom of the top seat (1). A base (3) is fixed to the bottom of several guide posts (2). A mounting base (5) is fitted onto the outer wall of the guide posts (2) above the base (3). Two upright plates (4) are bolted to the outer surfaces of both sides of the mounting base (5). The inner walls at both ends of the upright plates (4) are bolted to the surfaces of the top seat (1) and the base (3), respectively. Side support plates (16) are provided on both sides of the bottom of the base (3). A base plate (17) is fixedly installed at the bottom of the two side support plates (16). The bottom of the base plate (17) is... A grouting cylinder (19) is installed, and a grouting head (20) is installed at the bottom end of the grouting cylinder (19). A sealing ring (21) is fixedly installed on the outer wall of the lower end of the grouting cylinder (19). A positioning plate (22) is provided on the outer wall of both sides of the base plate (17). A threaded cylinder (23) is fixedly installed on one side of the bottom end of the positioning plate (22). A threaded rod (25) is installed in the internal thread of the threaded cylinder (23). The bottom end of the threaded rod (25) extends to the outside of the threaded cylinder (23) and is provided with a drill bit (2501). The top end of the threaded rod (25) passes through the positioning plate (22) and is provided with a handle (24).

2. The sealing device for grouting holes in coal mines according to claim 1, characterized in that: A piston cylinder (6) is fixedly installed inside the mounting base (5). The bottom end of the piston cylinder (6) passes through the base (3) and is provided with a grouting pipe (18). The bottom end of the grouting pipe (18) extends into the interior of the grouting cylinder (19).

3. A sealing device for grouting holes in coal mines according to claim 2, characterized in that: The top seat (1) is bolted to the outer walls on both sides of the second side seat (9). The piston cylinder (6) is movably connected to the outer walls of several guide columns (2) above it. The lower connecting seat (7) is bolted to the outer walls on both sides of the lower connecting seat (7). A V-shaped lifting arm (10) is rotatably installed on the outer wall between the first side seat (8) and the second side seat (9).

4. A sealing device for grouting holes in coal mines according to claim 3, characterized in that: The inner wall of the V-shaped lifting arm (10) is equipped with a nut seat (11), and the two nut seats (11) are threaded with a double-acting screw (12). One end of the double-acting screw (12) extends to the outside of the nut seat (11) and is equipped with a handle (13).

5. A sealing device for grouting holes in coal mines according to claim 4, characterized in that: A rectangular limiting seat (15) is installed at the top of the lower connecting seat (7), and a U-shaped limiting seat (14) is installed at the center of the bottom end of the top seat (1). The U-shaped limiting seat (14) is movably connected to the bidirectional lead screw (12).

6. A sealing device for grouting holes in coal mines according to claim 3, characterized in that: A piston block (27) is movably installed at the upper end of the piston cylinder (6). A piston rod (26) is provided at the center of the top of the piston block (27). The top of the piston rod (26) extends to the outside of the piston cylinder (6) and is connected to the bottom of the lower connecting seat (7).

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