Fireproof grouting device for coal mine

Abstract

The utility model discloses a coal mine fireproof grouting device in the technical field of coal mine fireproof equipment, which comprises a grouting nozzle and an adjusting control box arranged on the outer side of the grouting nozzle, adjusting support side lugs are symmetrically arranged on two sides of the adjusting control box, an adjusting chute is arranged in the middle of each adjusting support side lug, and the adjusting chute is arranged in the middle of the grouting nozzle. Adjusting fixing holes are formed in the two sides of the adjusting sliding groove, a communicating window is arranged at the connecting position of the adjusting supporting side lug and the adjusting control box body, and an inner cavity of the adjusting control box is communicated with an inner cavity of the adjusting supporting side lug. The adjusting control box is arranged on the outer side of the grouting nozzle, the valve hole adjusting structure of a connecting rod structure is arranged in the adjusting control box, synchronous adjustment of the two opening and closing plates can be achieved by operating the adjusting column on one side, the opening and closing plates can be adjusted and fixed, and opening and closing adjustment can be conducted at any time according to actual grouting use requirements. The operation process is simple.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mine fire prevention equipment, and specifically relates to a coal mine fire prevention grouting device. Background Art

[0002] During the withdrawal process of the fully mechanized caving face of the flammable coal seam underground in a coal mine, due to the influence of mine pressure, the roof is broken, and a large amount of floating coal is generated, which is prone to spontaneous combustion. In order to prevent the floating coal from spontaneous combustion, generally, grouting is carried out on the underground floating coal. When the existing mine fire prevention grouting device is used, since the ejection volume of the slurry is certain, the operator cannot adjust the size of the slurry ejection volume according to the actual amount of floating coal. When the amount of floating coal is small, it will lead to excessive spraying volume, resulting in waste of raw materials and slurry. When the amount of floating coal is large and the spraying volume is insufficient, it is necessary to carry out the spraying work for a long time to ensure that all floating coal is grouted to prevent the occurrence of spontaneous combustion of floating coal. In this case, the workload of the workers is increased, the burden on the operator is increased, and it is difficult to control the flow rate of the slurry. Application No.: CN202320349153.1 discloses a coal mine fire prevention grouting device, which drives the baffle to move by controlling the driving component, so that the two baffles approach or move away from the through hole, thereby adjusting the aperture of the through hole, and then changing the flow rate of the slurry flowing from the nozzle body into the nozzle. The power source of the driving component of the device is a motor, which requires the configuration of connection lines, and both sides of the adjustment component are controlled by separate motors, resulting in a large amount of energy consumption.

[0003] In view of this, the present utility model is specifically proposed. Summary of the Utility Model

[0004] The technical problem to be solved by the present utility model is to overcome the deficiencies of the prior art and provide a coal mine fire prevention grouting device. To solve the above technical problem, the basic concept of the technical solution adopted by the present utility model is:

[0005] A coal mine fire prevention grouting device includes a grouting nozzle and an adjustment control box arranged on its outer side. Adjustment support side ears are symmetrically arranged on both sides of the adjustment control box. An adjustment chute is provided at the middle position of the adjustment support side ears. Adjustment fixing holes are arranged on both sides of the adjustment chute. A communication window is provided at the connection between the adjustment support side ears and the adjustment control box body. The internal cavity of the adjustment control box is in a communication state with the internal cavity of the adjustment support side ears. A valve hole adjustment structure with a connecting rod structure is arranged outside the grouting nozzle. The connecting rod structure includes a first connecting rod, a second connecting rod, a third connecting rod, and a fourth connecting rod. The first connecting rod and the third connecting rod are rotationally connected through an adjustment column. The first connecting rod and the second connecting rod are rotationally connected through a connecting pin column. The second connecting rod and the fourth connecting rod are rotationally connected through the adjustment column. The third connecting rod and the fourth connecting rod are rotationally connected through the connecting pin column. The adjustment column is arranged in the corresponding adjustment chute in a matching manner. An opening and closing guide rod is fixedly arranged on the outer side of the connecting pin column. The opening and closing guide rod passes through the outer wall of the grouting nozzle and is fixedly connected with an opening and closing plate. A connecting seat is arranged at the fixed position of the opening and closing guide rod and the opening and closing plate. A spring is arranged on the section of the opening and closing guide rod between the inner wall of the grouting nozzle and the connecting seat. A fixed valve plate is fixedly arranged in the grouting nozzle. An opening and closing chute is arranged on the bottom surface of the fixed valve plate. A slider adapted to the opening and closing chute is arranged on the opening and closing plate.

[0006] As a further scheme of the present utility model: a valve hole is arranged at the middle position of the fixed valve plate. The valve hole is a circular hole structure. The opening and closing plate is a semi-circular structure. Two opening and closing plates are symmetrically arranged with respect to the grouting nozzle. The combined area of the two opening and closing plates is larger than the area of the valve hole. The valve hole can be completely blocked by using the opening and closing plates.

[0007] As a further scheme of the present utility model: the connection ends of the first connecting rod and the third connecting rod extend to the corresponding adjustment support side ears, and the connection ends of the second connecting rod and the fourth connecting rod extend to the adjustment support side ears on the other side, which is convenient for the opening and closing adjustment of the connecting rod structure.

[0008] As a further scheme of the present utility model: an adjustment fixing plate is arranged in a matching manner on the adjustment column. Limiting fixing screws are symmetrically arranged on both sides of the adjustment fixing plate. The specifications and hole spacings of the limiting fixing screws are adapted to the adjustment fixing holes, and are used to limit the position of the adjustment column relative to the adjustment support side ears.

[0009] As a further scheme of the present utility model: an adjustment end sleeve is sleeved and installed on the upper end of the adjustment column. The adjustment end sleeve is made of soft rubber material to improve the comfort of the adjustment process of the adjustment column.

[0010] As a further solution of the utility model: a grouting nozzle is arranged at the lower end of the grouting spray head. The grouting nozzle is of a conical structure. A sealing rubber pad is arranged on the contact surface between the opening and closing plate and the fixed valve plate to improve the sealing performance of the opening and closing adjustment of the opening and closing plate.

[0011] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art.

[0012] An adjustment control box is arranged on the outer side of the grouting spray head of the utility model. A valve hole adjustment structure with a connecting rod structure is arranged in the adjustment control box. By operating the adjustment column on one side, the synchronous adjustment of the two opening and closing plates can be realized. The opening and closing plates can be adjusted and fixed, or the opening and closing adjustment can be carried out at any time according to the actual grouting use requirements. The operation process is simple.

[0013] The adjustment process of the opening and closing plates in the adjustment control box of the utility model is manually controlled without external power supply. An opening and closing sliding groove is arranged on the bottom surface of the fixed valve plate, and a sliding block adapted to it is arranged on the top surface of the opening and closing plate to ensure the stability of the opening and closing adjustment of the opening and closing plates.

[0014] The following further describes in detail the specific implementation manners of the utility model with reference to the drawings. Description of the Drawings

[0015] As a part of this application, the drawings are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model, but do not constitute an improper limitation to the utility model. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0016] Figure 1 is the structural schematic diagram of the utility model;

[0017] Figure 2 is the front view of the utility model;

[0018] Figure 3 is the top view of the utility model;

[0019] Figure 4 is the sectional view of the utility model;

[0020] Figure 5 is the bottom view schematic diagram of the opening and closing structure of the utility model;

[0021] Figure 6 is the schematic diagram of the connecting pin column of the utility model.

[0022] In the figure: 1. Adjustment control box; 2. Grouting nozzle; 3. Grouting spray nozzle; 4. Adjustment support side ear; 5. Fixed valve plate; 6. Adjustment sliding groove; 7. Adjustment fixing hole; 8. Adjustment end sleeve; 9. Adjustment column; 10. Limit fixing screw; 11. Adjustment fixing plate; 12. Valve hole; 13. Communication window; 14. Connecting rod one; 15. Opening and closing guide rod; 16. Connecting seat; 17. Spring; 18. Connecting rod two; 19. Connecting rod three; 20. Connecting rod four; 21. Opening and closing plate; 22. Opening and closing sliding groove; 23. Connecting pin column.

[0023] It should be noted that these drawings and text descriptions are not intended to limit the scope of the concept of the present utility model in any way, but to illustrate the concept of the present utility model to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0025] As Figures 1 to 6 shown, a coal mine fire prevention grouting device includes a grouting nozzle 2 and an adjustment control box 1 arranged on its outer side. Adjustment support side ears 4 are symmetrically arranged on both sides of the adjustment control box 1. An adjustment sliding groove 6 is opened at the middle position of the adjustment support side ear 4. Adjustment fixing holes 7 are arranged on both sides of the adjustment sliding groove 6. A communication window 13 is arranged at the connection between the adjustment support side ear 4 and the main body of the adjustment control box 1. The internal cavity of the adjustment control box 1 and the internal cavity of the adjustment support side ear 4 are in a communicating state. A valve hole 12 adjustment structure in the form of a connecting rod structure is arranged outside the grouting nozzle 2. The connecting rod structure includes a connecting rod one 14, a connecting rod two 18, a connecting rod three 19 and a connecting rod four 20. The connecting rod one 14 and the connecting rod three 19 are rotatably connected through an adjustment column 9. The connecting rod one 14 and the connecting rod two 18 are rotatably connected through a connecting pin column 23. The connecting rod two 18 and the connecting rod four 20 are rotatably connected through an adjustment column 9. The connecting rod three 19 and the connecting rod four 20 are rotatably connected through a connecting pin column 23. The adjustment column 9 is arranged in the corresponding adjustment sliding groove 6 in a matching manner. An opening and closing guide rod 15 is fixedly arranged on the outer side of the connecting pin column 23. The opening and closing guide rod 15 passes through the outer wall of the grouting nozzle 2 and is fixedly connected to an opening and closing plate 21. A connecting seat 16 is arranged at the fixed position of the opening and closing guide rod 15 and the opening and closing plate 21. A spring 17 is arranged on the section of the opening and closing guide rod 15 between the inner wall of the grouting nozzle 2 and the connecting seat 16. A fixed valve plate 5 is fixedly arranged in the grouting nozzle 2. An opening and closing sliding groove 22 is opened on the bottom surface of the fixed valve plate 5. A sliding block adapted to the opening and closing sliding groove 22 is arranged on the opening and closing plate 21.

[0026] Among them, a valve hole 12 is provided at the middle position of the fixed valve plate 5. The valve hole 12 is a circular hole structure, and the opening and closing plate 21 is a semi-circular structure. There are two opening and closing plates 21 symmetrically arranged with respect to the grouting nozzle 2. The combined area of the two opening and closing plates 21 is larger than the area of the valve hole 12, and the valve hole 12 can be completely blocked by the opening and closing plate 21.

[0027] The connecting ends of the first connecting rod 14 and the third connecting rod 19 extend to the corresponding adjusting support side ears 4, and the connecting ends of the second connecting rod 18 and the fourth connecting rod 20 extend to the adjusting support side ears 4 on the other side, facilitating the opening and closing adjustment of the connecting rod structure.

[0028] An adjusting fixing plate 11 is provided on the adjusting column 9 in a matching manner. Two limit fixing screws 10 are symmetrically arranged on both sides of the adjusting fixing plate 11. The specifications and hole pitches of the limit fixing screws 10 are adapted to the adjusting fixing holes 7, and are used to limit the position of the adjusting column 9 relative to the adjusting support side ear 4.

[0029] An adjusting end sleeve 8 is sleeved and installed at the upper end of the adjusting column 9. The adjusting end sleeve 8 is made of soft rubber material to improve the comfort of the adjusting process of the adjusting column 9.

[0030] A grouting nozzle 3 is provided at the lower end of the grouting nozzle 2. The grouting nozzle 3 is a conical structure. A sealing gasket is provided on the contact surface between the opening and closing plate 21 and the fixed valve plate 5, which is used to improve the sealing performance of the opening and closing adjustment of the opening and closing plate 21.

[0031] The working principle of the present utility model is: According to the actual use requirements of coal mine fire prevention grouting, the size of the grouting volume can be adjusted in real time, or a fixed grouting mode can be set;

[0032] If the floating coal underground is uneven, loosen the limit fixing screws 10, remove the adjusting fixing plate 11 or adjust it to the loosened state, so that the manual can freely push the adjusting end sleeve 8, and then drive the adjusting column 9 to horizontally move along the adjusting chute 6 on the adjusting support side ear 4. When the adjusting column 9 approaches the adjusting control box 1, the included angle between the first connecting rod 14 and the third connecting rod 19 becomes larger, and the included angle between the first connecting rod 14 and the second connecting rod 18 becomes smaller, thereby driving the opening and closing guide rod 15 to move outward. The spring 17 on the opening and closing guide rod 15 is compressed, driving the opening and closing plate 21 to move outward synchronously, and the flux of the valve hole 12 becomes larger; when the adjusting column 9 moves away from the adjusting control box 1, the included angle between the first connecting rod 14 and the third connecting rod 19 becomes smaller, and the included angle between the first connecting rod 14 and the second connecting rod 18 becomes larger, thereby driving the opening and closing guide rod 15 to move inward. The spring 17 on the opening and closing guide rod 15 is stretched, driving the opening and closing plate 21 to move inward synchronously, and the flux of the valve hole 12 becomes smaller, thereby realizing the real-time adjustment of the flux of the grouting nozzle 2;

[0033] If the floating coal in a certain area is relatively uniform, the opening and closing plate 21 can be adjusted to a suitable flux state, and the position of the adjusting column 9 can be fixed by using the limit fixing screw 10 and the adjusting fixing plate 11, thereby locking the position of the opening and closing plate 21 to achieve the spraying operation with a fixed flux in a fixed area;

[0034] An adjustment control box 1 is arranged outside the grouting nozzle 2 of the present utility model. An adjustment structure for the valve hole 12 with a connecting rod structure is arranged in the adjustment control box 1. By operating the adjusting column 9 on one side, the synchronous adjustment of the two opening and closing plates 21 can be realized. The opening and closing plates 21 can be adjusted and fixed, and can also be opened and closed at any time according to the actual grouting use requirements. The operation process is simple. The adjustment process of the opening and closing plates 21 in the adjustment control box 1 is manually controlled without an external power supply. An opening and closing sliding groove 22 is arranged on the bottom surface of the fixed valve plate 5, and a slider adapted thereto is arranged on the top surface of the opening and closing plate 21 to ensure the stability of the opening and closing adjustment of the opening and closing plate 21.

[0035] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present utility model, can make some changes or modifications using the technical content prompted above as equivalent embodiments with equivalent changes. However, as long as the content does not depart from the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the present utility model.

Claims

1. A coal mine fire prevention grouting device, comprising a grouting nozzle (2) and an adjustment control box (1) arranged outside the grouting nozzle, characterized in that: The adjusting control box (1) is symmetrically provided with adjusting support side ears (4) on both sides, an adjusting slide groove (6) is provided in the middle of the adjusting support side ears (4), and adjusting fixing holes (7) are provided on both sides of the adjusting slide groove (6). A connecting window (13) is provided at the connection between the adjusting support side ears (4) and the main body of the adjusting control box (1), and the internal cavity of the adjusting control box (1) is connected with the internal cavity of the adjusting support side ears (4). The outside of the grouting nozzle (2) is provided with a valve hole (12) adjusting structure of a connecting rod structure, and the connecting rod structure comprises a connecting rod 1 (14), a connecting rod 2 (18), a connecting rod 3 (19) and a connecting rod 4 (20). The connecting rod 1 (14) and the connecting rod 3 (19) are rotatably connected via an adjusting column (9), the connecting rod 1 (14) and the connecting rod 2 (18) are rotatably connected via a connecting pin (23), and the connecting rod 2 (18) and the connecting rod 4 (20) are rotatably connected via an adjusting column (9). The four (20) are rotatably connected via the adjusting column (9), the three connecting rods (19) and the four connecting rods (20) are rotatably connected via the connecting pin (23), the adjusting column (9) is cooperatively arranged in the corresponding adjusting slot (6), an opening and closing guide rod (15) is fixedly arranged on the outer side of the connecting pin (23), the opening and closing guide rod (15) passes through the outer wall of the grouting nozzle (2) and is fixedly connected to the opening and closing plate (21), and the opening and closing guide rod (15) is fixedly arranged on the outer side of the grouting nozzle (2). A connecting seat (16) is provided at a fixed position between the rod (15) and the opening and closing plate (21); a spring (17) is provided on the opening and closing guide rod (15) in a section between the inner wall of the grouting nozzle (2) and the connecting seat (16); a fixed valve plate (5) is fixedly provided in the grouting nozzle (2); an opening and closing slide groove (22) is provided on the bottom surface of the fixed valve plate (5); and a sliding block matched with the opening and closing slide groove (22) is provided on the opening and closing plate (21).

2. A coal mine fireproof grouting device according to claim 1, characterized in that: A valve hole (12) is provided in the middle of the fixed valve plate (5), the valve hole (12) is a circular hole structure, the opening and closing plate (21) is a semicircular structure, two opening and closing plates (21) are symmetrically provided with respect to the grouting nozzle (2), and the combined area of ​​the two opening and closing plates (21) is larger than the area of ​​the valve hole (12).

3. A coal mine fireproof grouting device according to claim 2, characterized in that: The connecting end of the connecting rod 1 (14) and the connecting rod 3 (19) extends to the corresponding adjusting support side ear (4), and the connecting end of the connecting rod 2 (18) and the connecting rod 4 (20) extends to the adjusting support side ear (4) on the other side.

4. A coal mine fireproof grouting device according to claim 3, characterized in that: The adjusting column (9) is matched with an adjusting fixing plate (11), and limit fixing screws (10) are symmetrically arranged on both sides of the adjusting fixing plate (11), and the specifications and hole spacing of the limit fixing screws (10) are compatible with the adjusting fixing holes (7).

5. A coal mine fireproof grouting device according to claim 4, characterized in that: The upper end of the adjusting column (9) is sleeved with an adjusting end sleeve (8), and the adjusting end sleeve (8) is made of a soft colloid material.

6. A coal mine fire prevention grouting device according to claim 5, characterized in that: A grouting nozzle (3) is provided at the lower end of the grouting nozzle (2); the grouting nozzle (3) is a conical structure; and a sealing rubber pad is provided on the contact surface between the opening and closing plate (21) and the fixed valve plate (5).

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