Improved gas drainage drill

Abstract

The utility model discloses an improved gas drainage drill, which belongs to the technical field of coal mine gas drainage and comprises a base, a clamp holder is arranged at one end of the top of the base, a drill rod is clamped in the clamp holder, a movable seat is slidably arranged on one side of the top of the base, and a scraping cylinder is arranged on one side, far away from the movable seat, of the clamp holder. A scraping cylinder is arranged at the inlet end of the clamping device, an arc-shaped scraping plate is arranged in the scraping cylinder, a cleaning cylinder is further arranged on the inner side of the scraping cylinder, an annular communicating pipe is arranged on one side of the cleaning cylinder, and nozzles are arranged on one side of the annular communicating pipe around the drill rod. Sludge on the surface of the drill rod is scraped away through the arc-shaped scraping plate in the drill rod, then the drill rod is brushed away through the cleaning cylinder, residual sludge and water stains on the surface of the drill rod are brushed away through the spray head and the cleaning brush, cleanliness of the surface of the drill rod is guaranteed, and the situation that the sludge enters the interior of the clamp holder, long-time accumulation is caused, and the service life of the clamp holder is affected is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mine gas extraction, and particularly relates to an improved gas extraction drill. Background Art

[0002] During the mining process of high-gas coal mines, gas extraction must be carried out first according to the principle of "extraction before mining". A gas extraction drill rod is required. Once the gas extraction drill rod is drilled into place, the drill rod must be pulled out. The gas in the coal seam seeps into the gas extraction hole and then is extracted from the gas extraction hole.

[0003] According to patent number CN202321786402.X, an improved gas extraction drill is disclosed, which includes a machine platform, the upper surface of which is slidably connected to a sliding plate, a drive motor is fixedly installed inside the sliding plate, the output shaft of the sliding plate is fixedly connected to a connecting piece, one end of the connecting piece is installed with a drill rod, and a clamp is fixedly installed on the upper surface of the machine platform, the clamp is sleeved on the surface of the drill rod, and a through hole is opened inside the drill rod.

[0004] The above solution still has certain technical defects in actual use. Since the scraper is installed on the side of the clamp close to the drive motor, when the drill pipe is recovered, the silt on the surface will pass through the inside of the clamp, resulting in a large amount of silt accumulating inside the clamp. It is difficult to clean and easily causes damage to the clamp, affecting its service life. In addition, the drill pipe only adopts a single-layer sealing structure, and the sealing effect is unreliable. For this reason, we propose an improved gas extraction drill. Utility Model Content

[0005] The purpose of the utility model is to provide an improved gas extraction drill to solve the existing problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an improved gas extraction drill, comprising a base, a scraper and a cleaning barrel, a clamp is provided at one end of the top of the base, the drill rod is clamped inside the clamp, a movable seat is slidably provided on one side of the top of the base, the scraper is fixedly installed on the side of the clamp away from the movable seat by welding, the clamping hole of the clamp is at the same horizontal line as the center of the scraper, a plurality of arc-shaped scrapers are provided inside the scraper around the drill rod, the arc surface of the arc-shaped scraper is in close contact with the surface of the drill rod, a cleaning barrel is also fixedly installed on the inner side of the scraper through a bracket, the cleaning barrel is sleeved on the outer periphery of the drill rod, an annular connecting pipe is fixedly installed on one side of the cleaning barrel, a nozzle is provided around the drill rod on one side of the annular connecting pipe, and the nozzle is tilted inward.

[0007] Preferably, a through extraction hole is provided inside the drill rod, a connector is provided at one end of the drill rod, a first convex sealing ring is fixedly installed on the end surface of the connector, a first concave sealing ring is steppedly provided at one end of the drill rod close to the connector, a splicing groove is provided at the other end of the drill rod, a second convex sealing ring is provided inside the splicing groove near the opening, a second concave sealing ring is fixedly provided deep inside the splicing groove, and the outer periphery of the connector and the inner wall of the splicing groove are both provided with threads.

[0008] Preferably, a plurality of cleaning brushes are fixedly mounted on the inner wall surface of the cleaning cylinder, and the cleaning brushes are arranged around the inner wall surface of the cleaning cylinder.

[0009] Preferably, a water tank is fixedly welded to the top of the clamp, a water pump is provided inside the water tank, the water outlet of the water pump extends to the outside of the water tank through a conduit and is sealed and connected thereto, and the end of the conduit at the water outlet of the water pump is sealed and connected to the inside of the annular connecting pipe.

[0010] Preferably, a slide groove is provided on the top surface of the base, and a slider is provided on the bottom of the movable seat. The movable seat extends to the interior of the slide groove through the slider and is slidably connected to the inner wall thereof.

[0011] Preferably, a motor is fixedly mounted on the top of the movable seat, and the end of the output shaft of the motor is fixedly connected to one end of the drill rod through a connecting piece.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. By installing the scraper on one side of the entry end of the clamp, the drill pipe will first pass through the inside of the scraper before entering the clamp, and the curved scraper inside will be used to scrape off the silt on its surface. Then it will be brushed by the cleaning barrel, and the residual silt and water stains on its surface will be brushed off with the nozzle and cleaning brush to ensure the cleanliness of the drill pipe surface and prevent silt from entering the inside of the clamp, resulting in long-term accumulation and affecting the service life of the clamp.

[0014] 2. When installing the two drill pipes, the first convex sealing ring is inserted into the inside of the second concave sealing ring to achieve the first layer of sealing at the connection between the two drill pipes, and the second convex sealing ring is inserted into the inside of the first concave sealing ring to achieve the second layer of sealing at the connection between the two drill pipes, thereby improving the sealing performance and preventing leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the drill rod of the present utility model;

[0017] Figure 3 This is a schematic diagram of the scraper structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the inner structure of the cleaning cylinder of the present invention.

[0019] In the figure: 1. Base; 2. Clamp; 3. Drill rod; 4. Connector; 5. First convex sealing ring; 6. First concave sealing ring; 7. Splicing groove; 8. Second concave sealing ring; 9. Second convex sealing ring; 10. Scraper; 11. Curved scraper; 12. Cleaning cylinder; 13. Nozzle; 14. Cleaning brush; 15. Water tank; 16. Slide; 17. Movable seat; 18. Motor; 19. Annular connecting pipe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-4 The utility model provides an improved gas extraction drill technical solution: it includes a base 1, a scraper 10 and a cleaning cylinder 12. A clamper 2 is provided at one end of the top of the base 1, and the drill rod 3 is clamped inside the clamper 2. A movable seat 17 is slidably provided on one side of the top of the base 1. The scraper 10 is fixedly installed on the side of the clamper 2 away from the movable seat 17 by welding. The clamping hole of the clamper 2 is at the center of the scraper 10 and is on the same horizontal line. A plurality of arc-shaped scrapers 11 are provided around the drill rod 3 inside the scraper 10, and the arc surface of the arc-shaped scraper 11 is in close contact with the surface of the drill rod 3. A cleaning cylinder 12 is also fixedly installed on the inner side of the scraper 10 through a bracket. The cleaning cylinder 12 is sleeved on the outer periphery of the drill rod 3. An annular connecting pipe 19 is fixedly installed on one side of the cleaning cylinder 12. A nozzle 13 is provided around the drill rod 3 on one side of the annular connecting pipe 19, and the nozzle 13 is tilted inward.

[0022] Specifically, a through extraction hole is opened inside the drill rod 3, a connector 4 is provided at one end of the drill rod 3, a first convex sealing ring 5 is fixedly installed on the end surface of the connector 4, a first concave sealing ring 6 is steppedly arranged at one end of the drill rod 3 near the connector 4, a splicing groove 7 is opened at the other end of the drill rod 3, a second convex sealing ring 9 is provided inside the splicing groove 7 near the opening, a second concave sealing ring 8 is fixedly provided deep inside the splicing groove 7, and the outer periphery of the connector 4 and the inner wall of the splicing groove 7 are both provided with threads.

[0023] Specifically, a plurality of cleaning brushes 14 are fixedly mounted on the inner wall surface of the cleaning cylinder 12 , and the cleaning brushes 14 are arranged around the inner wall surface of the cleaning cylinder 12 .

[0024] Specifically, a water tank 15 is fixedly welded to the top of the clamp 2, and a water pump is arranged inside the water tank 15. The water outlet of the water pump extends to the outside of the water tank 15 through a conduit and is sealed and connected with it. The end of the conduit at the water outlet of the water pump is sealed and connected with the inside of the annular connecting pipe 19.

[0025] Specifically, a slide groove 16 is provided on the top surface of the base 1 , and a slider is provided at the bottom of the movable seat 17 . The movable seat 17 extends to the interior of the slide groove 16 through the slider and is slidably connected to the inner wall thereof.

[0026] Specifically, a motor 18 is fixedly mounted on the top of the movable seat 17 , and the end of the output shaft of the motor 18 is fixedly connected to one end of the drill rod 3 through a connecting piece.

[0027] In this embodiment, when in use, the threaded connection between the two drill rods 3 is achieved through the connector 4 and the splicing groove 7 of the drill rod 3. After the connection, the first convex sealing ring 5 is inserted into the inside of the second concave sealing ring 8 to achieve the first layer of sealing at the connection between the two drill rods 3, and the second convex sealing ring 9 is inserted into the inside of the first concave sealing ring 6 to achieve the second layer of sealing at the connection between the two drill rods 3, thereby improving its sealing performance and preventing leakage. When the drill rod 3 is recovered, the drill rod 3 first passes through the inside of the scraper 10, and the arc-shaped scraper 11 provided inside the scraper 10 is used to scrape off the silt on the surface of the drill rod 3 during the rotation of the drill rod 3, and then enters the cleaning cylinder 1. 2, before entering the cleaning cylinder 12, the water inside the water tank 15 is extracted by the water pump inside the water tank 15, and is injected into the annular connecting pipe 19 through the conduit, and then sprayed out by the nozzle 13 to flush the surface of the drill rod 3, and the silt layer attached to the surface of the drill rod 3 is flushed away. Then, the drill rod 3 enters the cleaning cylinder 12 and is scrubbed with the cleaning brush 14 to clean the surface. At the same time, the excess water stains on the surface of the drill rod 3 are removed, so that the surface of the drill rod 3 can be kept clean when the drill rod 3 enters the clamp 2, and silt is prevented from entering the clamp 2, resulting in long-term accumulation and affecting the service life of the clamp 2.

[0028] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An improved gas extraction drill, comprising a base (1), a scraper cylinder (10) and a cleaning cylinder (12), characterized in that: A holder (2) is provided at one end of the top of the base (1), a drill rod (3) is clamped inside the holder (2), a movable seat (17) is slidably provided on one side of the top of the base (1), a scraper (10) is fixedly mounted on the side of the holder (2) away from the movable seat (17) by welding, the clamping hole of the holder (2) is located at the center of the scraper (10) and is on the same horizontal line, and a plurality of scrapers (10) are provided inside the scraper (10) around the drill rod (3). An arc-shaped scraper (11) is provided, wherein the arc surface of the arc-shaped scraper (11) is in close contact with the surface of the drill rod (3); a cleaning cylinder (12) is fixedly installed on the inner side of the scraper cylinder (10) through a bracket; the cleaning cylinder (12) is sleeved on the outer periphery of the drill rod (3); an annular connecting pipe (19) is fixedly installed on one side of the cleaning cylinder (12); a nozzle (13) is provided around the drill rod (3) on one side of the annular connecting pipe (19); and the nozzle (13) is tilted inwardly.

2. The improved gas drainage drill according to claim 1, characterized in that: A through extraction hole is provided inside the drill rod (3), a connector (4) is provided at one end of the drill rod (3), a first convex sealing ring (5) is fixedly installed on the end surface of the connector (4), a first concave sealing ring (6) is provided in a stepped manner at one end of the drill rod (3) near the connector (4), a splicing groove (7) is provided at the other end of the drill rod (3), a second convex sealing ring (9) is provided inside the splicing groove (7) near the opening, a second concave sealing ring (8) is fixedly provided deep inside the splicing groove (7), and the outer periphery of the connector (4) and the inner wall of the splicing groove (7) are both provided with threads.

3. The improved gas drainage drill according to claim 1, characterized in that: A plurality of cleaning brushes (14) are fixedly mounted on the inner wall surface of the cleaning cylinder (12), and the cleaning brushes (14) are arranged around the inner wall surface of the cleaning cylinder (12).

4. The improved gas drainage drill according to claim 1, characterized in that: A water tank (15) is fixedly welded to the top of the holder (2), and a water pump is provided inside the water tank (15). The water outlet of the water pump extends to the outside of the water tank (15) through a conduit and is in sealed communication therewith, and the end of the conduit at the water outlet of the water pump is in sealed communication with the inside of the annular connecting pipe (19).

5. The improved gas drainage drill according to claim 1, characterized in that: A slide groove (16) is provided on the top surface of the base (1), and a slider is provided on the bottom of the movable seat (17). The movable seat (17) extends to the interior of the slide groove (16) through the slider and is slidably connected to the inner wall thereof.

6. The improved gas drainage drill according to claim 1, characterized in that: A motor (18) is fixedly mounted on the top of the movable seat (17), and the output shaft end of the motor (18) is fixedly connected to one end of the drill rod (3) through a connecting piece.

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