Coal mine drilling, grouting and hole sealing device

Abstract

The utility model discloses a coal mine drilling, grouting and hole sealing device, and relates to the technical field of coal mining. Comprising a grouting pipe, mechanical sealing pieces are fixedly installed on the left side wall and the right side wall of the grouting pipe correspondingly, an extraction pipe is fixedly installed between the left mechanical sealing piece and the right mechanical sealing piece, air inlet holes are formed in the left side ends of the extraction pipe correspondingly, and cleaning mechanisms are arranged on the portions, corresponding to the air inlet holes, of the extraction pipe and the grouting pipe; bag bodies are fixedly installed at the positions, close to the left and right sides, of the outer surface of the grouting pipe, air inlet mechanisms are arranged on the lower side wall, corresponding to the bag bodies, of the grouting pipe, and a connecting pipe is arranged at the position, close to the right side edge, of the upper side wall of the grouting pipe. According to the inner diameter of a drill hole, the air pressure of the two bag bodies is controlled, the bag bodies are better in sealing effect, not prone to breakage and beneficial to follow-up plugging, meanwhile, the function of cleaning the extraction pipe is added, the extraction pipe is effectively prevented from being blocked, and using is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of coal mining technology, specifically to a coal mine drilling grouting and sealing device. Background Technology

[0002] During coal mining, a large amount of methane gas is present in the coal seam. In order to prevent methane explosions during mining, it is generally necessary to extract the methane gas from the coal seam. The specific process of coal mine methane extraction is as follows: first, drill into the coal seam and the methane accumulation area, then use grouting sealing equipment to seal the borehole, and then use extraction equipment to extract the methane gas from the coal seam and the goaf and collect it for use.

[0003] In existing technologies, conventional coal mine drilling grouting sealing devices have a fixed bag size during use, making it impossible to control the air pressure of the bag according to needs. This can easily lead to problems such as poor sealing or damage due to excessive air pressure, resulting in poor sealing performance. Furthermore, coal mine drilling grouting sealing devices lack the function of cleaning the extraction pipe, making it inconvenient to use when the extraction pipe is blocked, as it cannot be disassembled and cleaned. Utility Model Content

[0004] This invention provides a coal mine drilling grouting and sealing device to solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coal mine drilling grouting and sealing device, comprising a grouting pipe, mechanical seals fixedly installed on both the left and right sidewalls of the grouting pipe, and an extraction pipe fixedly installed between the left and right mechanical seals, an air inlet hole opened on the left end of the extraction pipe, a cleaning mechanism provided on the extraction pipe and the grouting pipe corresponding to the air inlet hole, a bag body fixedly installed on the outer surface of the grouting pipe near the left and right positions, an air inlet mechanism provided on the lower sidewall of the grouting pipe corresponding to the bag body, a discharge port opened on all four sidewalls of the grouting pipe between the left and right bag bodies, a connecting pipe provided on the upper sidewall of the grouting pipe near the right edge, and an installation mechanism provided on the outer surface of the grouting pipe near the right position.

[0006] Furthermore, both the left and right sides of the grouting pipe are sealed structures.

[0007] Furthermore, the left side of the extraction tube is a sealed structure, and the right side of the extraction tube is an open structure.

[0008] Furthermore, the cleaning mechanism includes a metal filter screen and a scraper. The metal filter screen is fixedly installed on the left end of the extraction pipe. Scrapers are provided on the left side of the grouting pipe corresponding to the metal filter screen near the top and bottom, and the scrapers are in movable contact with the outer surface of the metal filter screen.

[0009] Furthermore, the air intake mechanism includes a one-way air valve, a quick connector, a pressure gauge, an air distribution pipe, and an air outlet pipe. The one-way air valve is installed on the right edge of the lower side wall of the grouting pipe. A quick connector is installed on the lower surface of the one-way air valve. A pressure gauge is installed on the right side of the one-way air valve. An air distribution pipe is installed on the upper surface of the one-way air valve and is installed on the lower inner wall of the grouting pipe. An air outlet pipe is installed on the corresponding air distribution pipe of the bag body and is connected to the bag body.

[0010] Furthermore, the installation mechanism includes an installation plate and installation holes. The installation plate is fixedly installed on the outer surface of the grouting pipe, and installation holes are evenly provided on the installation plate along the circumference.

[0011] Compared with the prior art, this utility model provides a coal mine drilling grouting and sealing device, which has the following beneficial effects:

[0012] 1. This coal mine borehole grouting and sealing device uses an air intake mechanism to monitor the internal air pressure of the two main bodies of the left and right bags, making the inflation pressure more moderate, resulting in a better sealing effect between the two main bodies of the bags and the inner wall of the borehole. Furthermore, the main bodies of the bags are less prone to breakage, which facilitates sealing between the two main bodies of the bags.

[0013] 2. This coal mine drilling grouting and sealing device, by setting up a mechanical seal, enables the extraction pipe to rotate, which in turn drives the metal filter screen to rotate along the scraper. This makes the metal filter screen less prone to clogging, thereby increasing the cleaning function of the extraction pipe, effectively preventing blockage, making gas extraction smoother, and more convenient to use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the present invention;

[0016] Figure 3 This is a schematic diagram of the air intake mechanism of this utility model.

[0017] In the diagram: 1. Grouting pipe; 2. Mechanical seal; 3. Extraction pipe; 4. Air inlet; 5. Cleaning mechanism; 501. Metal filter screen; 502. Scraper; 6. Bag body; 7. Air inlet mechanism; 701. One-way air valve; 702. Quick connector; 703. Pressure gauge; 704. Air distribution pipe; 705. Air outlet pipe; 8. Discharge port; 9. Connecting pipe; 10. Installation mechanism; 101. Mounting plate; 102. Mounting hole. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-3 This utility model discloses a coal mine drilling grouting and sealing device, including a grouting pipe 1. Mechanical seals 2 are fixedly installed on the left and right side walls of the grouting pipe 1, and an extraction pipe 3 is fixedly installed between the left and right mechanical seals 2. An air inlet 4 is opened on the left end of the extraction pipe 3. A cleaning mechanism 5 is provided on the extraction pipe 3 and the grouting pipe 1 corresponding to the air inlet 4. A bag body 6 is fixedly installed on the outer surface of the grouting pipe 1 near the left and right positions. An air inlet mechanism 7 is provided on the lower side wall of the grouting pipe 1 corresponding to the bag body 6. A discharge port 8 is opened on the four side walls of the grouting pipe 1 between the left and right bag bodies 6. A connecting pipe 9 is provided on the upper side wall of the grouting pipe 1 near the right edge. An installation mechanism 10 is provided on the outer surface of the grouting pipe 1 near the right position.

[0020] Specifically, both the left and right sides of the grouting pipe 1 are sealed structures.

[0021] In this implementation plan, no leakage will occur on the left and right sides of the grouting pipe 1.

[0022] Specifically, the left side of the extraction tube 3 is a sealed structure, and the right side of the extraction tube 3 is an open structure.

[0023] In this implementation plan, the right end of the extraction pipe 3 can be used for gas extraction through the air inlet 4.

[0024] Specifically, the cleaning mechanism 5 includes a metal filter screen 501 and a scraper 502. The metal filter screen 501 is fixedly installed on the left end of the extraction pipe 3. The scraper 502 is provided on the left side of the grouting pipe 1 corresponding to the metal filter screen 501 near the upper and lower positions, and the scraper 502 is in contact with the outer surface of the metal filter screen 501.

[0025] In this embodiment, the metal filter screen 501 rotates with the extraction pipe 3, causing the metal filter screen 501 to rotate along the upper and lower scrapers 502. The scrapers 502 scrape off the impurities adhering to the outer surface of the metal filter screen 501, effectively preventing debris and other materials from clogging the air inlet 4 and ensuring smooth gas extraction.

[0026] Specifically, the air intake mechanism 7 includes a one-way air valve 701, a quick connector 702, a pressure gauge 703, an air distribution pipe 704, and an air outlet pipe 705. The one-way air valve 701 is installed on the right edge of the lower side wall of the grouting pipe 1. The quick connector 702 is installed on the lower surface of the one-way air valve 701. The pressure gauge 703 is installed on the right side of the one-way air valve 701. The air distribution pipe 704 is installed on the upper surface of the one-way air valve 701 and is installed on the lower inner wall of the grouting pipe 1. The air outlet pipe 705 is installed on the corresponding air distribution pipe 704 of the bag body 6 and is connected to the bag body 6.

[0027] In this embodiment, the quick connector 702 connects to the external air pump hose. The air pump causes gas to flow into the air distribution pipe 704 through the one-way air valve 701. The gas then flows into the left and right bag bodies 6 through the two air outlet pipes 705 on the air distribution pipe 704. The air pressure inside the bag body 6 can be visually viewed through the air pressure gauge 703. According to the borehole inner diameter, when the air pressure inside the bag body 6 meets the pressure requirements, it indicates that the bag body 6 has a better sealing effect on the borehole inner wall and the bag body 6 is not easily damaged by excessive air pressure.

[0028] Specifically, the installation mechanism 10 includes an installation plate 101 and installation holes 102. The installation plate 101 is fixedly installed on the outer surface of the grouting pipe 1, and the installation holes 102 are evenly provided on the installation plate 101 along the circumferential direction.

[0029] In this embodiment, the mounting holes 102 on the mounting plate 101 can be used for the installation of expansion screws, so that the mounting plate 101 can be fixed to the inner wall of the tunnel.

[0030] In use, the grouting pipe 1 is inserted into the borehole, allowing the mounting hole 102 on the mounting plate 101 in the mounting mechanism 10 to be used for expansion bolt installation, thus fixing the mounting plate 101 to the inner wall of the tunnel. Then, the quick connector 702 in the air intake mechanism 7 connects to the external air pump pipe. The air pump forces gas through the one-way valve 701 into the air distribution pipe 704, and then through the two outlet pipes 705 on the air distribution pipe 704 into the left and right bag bodies 6 respectively. The air pressure inside the bag body 6 can be visually monitored using the pressure gauge 703. Depending on the borehole diameter, when the internal air pressure of the bag body 6 meets the required pressure, it indicates that the bag body 6 provides a better seal to the borehole wall and is less prone to damage from excessive air pressure, thus ensuring higher inflation pressure. The appropriate sealing effect is achieved between the two main bodies 6 of the gas bag and the inner wall of the borehole. The connecting pipe 9 is connected to the discharge pipe of the grouting pump, allowing quick-drying cement to flow into the grouting pipe 1, and then into the space between the left and right main bodies 6 through the discharge port 8 to seal the borehole. During this process, the extraction pipe 3 needs to be rotated to prevent it from being solidified by the quick-drying cement. The extraction pipe 3 is connected to the air pump, allowing the gas in the borehole to enter the air inlet 4 through the metal filter screen 501, and then into the extraction pipe 3. The extraction pipe 3 drives the metal filter screen 501 in the cleaning mechanism 5 to rotate back and forth along the upper and lower scrapers 502. The scrapers 502 scrape off the impurities adhering to the outer surface of the metal filter screen 501, effectively preventing debris from clogging the air inlet 4, ensuring smooth gas extraction, and making it more convenient to use.

[0031] In summary, this coal mine borehole grouting and sealing device controls the air pressure of the two main bodies 6 of the bladder according to the inner diameter of the borehole, resulting in a better sealing effect of the main bodies 6 of the bladder and making them less prone to breakage, which is conducive to subsequent sealing. At the same time, it adds a cleaning function to the extraction pipe 3, effectively avoiding blockage of the extraction pipe 3, and making it more convenient to use.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coal mine drilling hole grouting hole sealing device, comprising a grouting pipe (1), characterized in that: The left and right side walls of the grouting pipe (1) are fixedly installed with mechanical seals (2), and the left and right mechanical seals (2) are fixedly installed with the extraction pipe (3), the left end of the extraction pipe (3) is provided with an air inlet hole (4), the air inlet hole (4) corresponds to the extraction pipe (3) and the grouting pipe (1) is provided with a cleaning mechanism (5), the outer surface of the grouting pipe (1) is fixedly installed with a bag body (6) near the left and right positions, the grouting pipe (1) is provided with an air inlet mechanism (7) on the lower side wall corresponding to the bag body (6), the grouting pipe (1) is provided with a connecting pipe (9) on the upper side wall near the right side edge, and the grouting pipe (1) is provided with a mounting mechanism (10) on the outer surface near the right side.

2. The coal mine drilling and grouting hole sealing device according to claim 1, characterized in that: The left and right sides of the grouting pipe (1) are sealed structures.

3. The coal mine drilling and grouting hole sealing device according to claim 1, characterized in that: The left side of the extraction pipe (3) is a sealed structure, and the right side of the extraction pipe (3) is an open structure.

4. The coal mine drilling and grouting hole sealing device according to claim 1, characterized in that: The cleaning mechanism (5) comprises a metal filter cover (501) and a scraper (502), the metal filter cover (501) is fixedly installed on the left end of the extraction pipe (3), the metal filter cover (501) is provided with a scraper (502) near the upper and lower positions on the left side of the grouting pipe (1), and the scraper (502) is movably attached to the outer surface of the metal filter cover (501).

5. The coal mine drilling and grouting hole sealing device according to claim 1, characterized in that: The air inlet mechanism (7) comprises a one-way air valve (701), a quick connector (702), an air pressure gauge (703), an air distribution pipe (704) and an air outlet pipe (705), the one-way air valve (701) is installed on the right side edge of the lower side wall of the grouting pipe (1), the lower surface of the one-way air valve (701) is provided with a quick connector (702), the right side of the one-way air valve (701) is provided with an air pressure gauge (703), the upper surface of the one-way air valve (701) is provided with an air distribution pipe (704), and the air distribution pipe (704) is installed on the inner wall of the lower side of the grouting pipe (1), the air distribution pipe (704) is provided with an air outlet pipe (705) corresponding to the bag body (6), and the air outlet pipe (705) is communicated with the bag body (6).

6. The coal mine drilling and grouting hole sealing device according to claim 1, characterized in that: The mounting mechanism (10) comprises a mounting plate (101) and a mounting hole (102), the mounting plate (101) is fixedly installed on the outer surface of the grouting pipe (1), and the mounting plate (101) is uniformly provided with mounting holes (102) along the circumference.

Images