Drill rod for gas extraction drilling construction

Abstract

The utility model discloses a drill rod for gas extraction drilling construction, and belongs to the technical field of gas extraction. Comprising a drill bit, a drill rod is arranged at one end of the drill bit, an exhaust assembly is arranged on the circumferential inner wall of the drill rod, and an extension rod is arranged at the other end of the drill rod. The drill bit is used for drilling holes, the mounting ring is rotated to drive the baffle to shield the through hole, gravel muck is prevented from entering from the through hole to cause blockage, the clamping block is driven by resilience force of the spring to enter the clamping groove, and the baffle is more stable, and when the drill bit enters a coal seam, the mounting ring is rotated in the opposite direction to drive the baffle to rotate. The clamping blocks are extruded to enter the containing grooves, gas is extracted through the through holes, coal mining is safer, the mining efficiency is improved, and the length of the drill rod is conveniently increased through the assembly assembly to adapt to a deeper coal seam. According to the structural design, mining efficiency can be improved conveniently, construction operation is easy and convenient, mining cost is reduced, and the drill rod can be lengthened conveniently to adapt to deeper coal seams.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gas extraction, more specifically, to a drill rod for gas extraction drilling construction. BACKGROUND

[0002] Coal seam gas is natural gas generated in coal seams and mainly stored in coal seams in an adsorbed state, which is a clean energy, but also a harmful source of coal mine gas explosion and coal gas accidents. Therefore, to ensure the safety of mine operation, during coal mining, the gas in the coal seam needs to be extracted first, and then coal mining operation can be carried out.

[0003] The prior art patent document with publication number CN211851690U provides a drill rod for gas extraction drilling in a mine. During the process, the gas extraction pipe needs to be fixed to the coal ash wall, and the support rod is pressed. At this time, the support rod starts to rotate through the shaft, and the spring is deformed. When the support rod and the inner wall of the gas extraction pipe are in contact, the gas extraction pipe is embedded in the first drill rod. When the gas extraction pipe penetrates the first drill rod, the elastic action of the spring drives the support rod to rotate in the opposite direction. The support rod is embedded in the coal ash wall to complete the fixation, which improves the stability of the gas extraction pipe after entering the mine, and avoids the gas extraction pipe from separating from the first drill rod when the first drill rod separates from the mine.

[0004] Although the device has many beneficial effects, it still has the following problems: during the use of the device, the gas extraction pipe needs to be installed after drilling with the drill rod, which is slow in mining efficiency, complicated in construction operation, and high in mining cost. Secondly, the length of the drill rod is fixed during the use of the device, which is not convenient for adapting to deeper coal seams, and needs to be improved. In view of this, we propose a drill rod for gas extraction drilling construction. CONTENT OF THE UTILITY MODEL

[0005] 1. Technical problem to be solved

[0006] The utility model aims to provide a drill rod for gas extraction drilling construction to solve the problems of slow mining efficiency, complicated construction operation, high mining cost, fixed length of drill rod, and inconvenience in adapting to deeper coal seams in the above background technology.

[0007] 2. Technical scheme

[0008] The utility model provides a kind of drill pipe for gas extraction drilling construction, including drill bit, the drill bit one end is equipped with drill pipe, the drill pipe circumferential inner wall is equipped with exhaust component, the exhaust component includes multiple through holes being opened in the drill pipe circumferential outer wall, the drill pipe circumferential inner wall is rotatably connected with mounting ring, the mounting ring side wall is equipped with multiple baffles, the drill pipe circumferential inner wall is equipped with fixed plate, the baffle top is equipped with multiple clamping grooves, the fixed plate bottom is equipped with multiple accommodating grooves, the accommodating groove top is equipped with spring, the spring other end is equipped with clamping block, the drill pipe other end is equipped with extension rod, the extension rod circumferential inner wall one end is equipped with assembly component.

[0009] Preferably, the assembly component includes a docking sleeve, the docking sleeve one end is equipped with a positioning ring, the drill pipe circumferential inner wall one end is equipped with a fixing ring, the fixing ring side wall is equipped with a docking head.

[0010] Preferably, the fixed plate is L-shaped in cross section, and the position of the fixed plate matches the position of the through hole.

[0011] Preferably, the clamping block is spherical, and the size and position of the clamping groove match the size and position of the clamping block.

[0012] Preferably, the baffle bottom is equipped with a sealing plate, and the sealing plate is made of vulcanized rubber.

[0013] Preferably, the drill pipe circumferential inner wall is equipped with a limiting ring, the mounting ring circumferential outer wall is equipped with a limiting groove, and the size and position of the limiting ring match the size and position of the limiting groove.

[0014] Preferably, the docking sleeve is threadedly connected with the docking head, and the size of the positioning ring matches the size of the fixing ring.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] The utility model discloses a drill bit is drilled, and the mounting ring is rotated to drive the baffle to shield the through hole, so that the gravel and earth from the through hole are prevented from entering and causing blockage, the spring rebound force drives the clamping block to enter the clamping groove, the baffle is more stable, when the drill bit enters the coal seam, the mounting ring is rotated in the opposite direction to drive the baffle to rotate, the clamping block is pressed into the accommodating groove, the through hole is used for gas extraction, the coal mining is safer, and the mining efficiency is improved.

[0018] Secondly, the positioning ring at one end of the extension rod is aligned with the fixing ring of the drill pipe circumferential inner wall, the docking sleeve is sleeved on the circumferential outer wall of the docking head and is rotated in the threaded direction, so that the drill pipe and the extension rod are assembled, the length is easily increased to adapt to deeper coal seams, the structure design of the utility model is convenient to improve the mining efficiency, the construction operation is simple, the mining cost is reduced, and the drill pipe is easily extended to adapt to deeper coal seams. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic cross-sectional view of a portion of the exhaust assembly structure of the present invention;

[0021] Figure 3 This is a schematic cross-sectional view of the baffle mounting ring structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the disassembled structure of the card slot and card block of the utility model;

[0023] Figure 5 This is a schematic cross-sectional view of a partial structure of an assembly component of the present invention;

[0024] Explanation of the numbers in the figure: 1. Drill bit; 2. Drill rod; 3. Exhaust assembly; 4. Extension rod; 5. Assembly assembly; 201. Limiting ring; 301. Through hole; 302. Mounting ring; 303. Baffle; 304. Fixing plate; 305. Slot; 306. Accommodating slot; 307. Spring; 308. Block; 309. Sealing plate; 310. Limiting slot; 501. Docking sleeve; 502. Positioning ring; 503. Fixing ring; 504. Docking joint. DETAILED DESCRIPTION

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In the description of the present invention, “plurality” means two or more, unless otherwise clearly defined.

[0027] In the description of the utility model, it is necessary to explain that, unless there are explicit provisions and limitations, the terms "mounting", "setting", "sleeving / connecting", "connecting" and the like should be understood broadly, for example, "connecting" can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0028] Please refer to Figures 1-5 The utility model provides a technical scheme:

[0029] A drill rod for gas extraction drilling construction, including drill bit 1, drill bit 1 one end is welded with drill rod 2, and the circular peripheral inner wall of drill rod 2 is fixed with exhaust component 3, exhaust component 3 includes multiple through holes 301 set up in the circular peripheral outer wall of drill rod 2, and the circular peripheral inner wall of drill rod 2 is rotatably connected with mounting ring 302, multiple baffles 303 are welded on the side wall of mounting ring 302, and fixed plate 304 is welded on the circular peripheral inner wall of drill rod 2, multiple clamping grooves 305 are set up on the top of baffle 303, multiple accommodating grooves 306 are set up on the bottom of fixed plate 304, spring 307 is fixed on the top of accommodating groove 306, and clamping block 308 is fixed on the other end of spring 307, and the other end of drill rod 2 is threadedly connected with extension rod 4, and assembly component 5 is fixed on the circular peripheral inner wall of extension rod 4 one end. The utility model passes through drill bit 1 and carries out drilling, drives baffle 303 to shield through hole 301 by rotating mounting ring 302, avoids the blockage caused by the fact that the gravel and earth enter through hole 301, drives clamping block 308 to enter the inside of clamping groove 305 by the resilience of spring 307, makes baffle 303 more stable, when drill bit 1 enters coal seam, rotates mounting ring 302 in the opposite direction and drives baffle 303 to rotate, clamping block 308 is extruded and enters the inside of accommodating groove 306, extracts gas through through hole 301, makes coal mining more safe, and improves mining efficiency.

[0030] Specifically, assembly component 5 includes butt joint sleeve 501, butt joint sleeve 501 one end is fixed with positioning ring 502, the circular peripheral inner wall of drill rod 2 one end is fixed with fixed ring 503, and butt joint head 504 is fixed on the side wall of fixed ring 503. By aligning the positioning ring 502 on the one end of extension rod 4 with the fixed ring 503 on the circular peripheral inner wall of drill rod 2, by the extension rod 4 one end of butt joint sleeve 501 is set in the circular peripheral outer wall of butt joint head 504 and is rotated along the threaded direction, so that the assembly of drill rod 2 and extension rod 4 is completed, which is convenient for increasing the length to adapt to deeper coal seam.

[0031] Further, the cross section of fixed plate 304 is L-shaped, and the position of fixed plate 304 matches the position of through hole 301. Through the L-shaped fixed plate 304 matched with the position of through hole 301, it is convenient to cooperate with baffle 303, and better shield through hole 301.

[0032] It is worth mentioning that the card block 308 is spherical, and the size and position of the card slot 305 match the size and position of the card block 308. Through the spherical card block 308 matched with the size and position of the card slot 305, the movable pressing of the baffle 303 on the card block 308 is facilitated, and the clamping of the baffle 303 and the fixed plate 304 is more convenient.

[0033] It is worth noting that the bottom of the baffle 303 is bonded with a sealing plate 309, and the material of the sealing plate 309 is vulcanized rubber. Through the sealing plate 309 made of vulcanized rubber, the sealing performance of the baffle 303 is improved.

[0034] In addition, the limit ring 201 is fixedly arranged on the inner circumferential wall of the drill rod 2, the limit groove 310 is arranged on the outer circumferential wall of the mounting ring 302, and the size and position of the limit ring 201 match the size and position of the limit groove 310. Through the limit ring 201 matched with the size and position of the limit groove 310, the sliding of the mounting ring 302 is avoided, and the shielding of the baffle 303 on the through hole 301 is affected.

[0035] Further, the butt joint sleeve 501 is threadedly connected with the butt joint head 504, and the size of the positioning ring 502 matches the size of the fixed ring 503. Through the positioning ring 502 matched with the size of the fixed ring 503, the drill rod 2 and the extension rod 4 are conveniently positioned, and the assembly time is reduced.

[0036] Working principle: when the drill rod is used for gas extraction drilling construction, the drill bit 1 is used for drilling, the mounting ring 302 is rotated to drive the baffle 303 to shield the through hole 301, the card block 308 is pressed into the inside of the containing groove 306, after the baffle 303 enters the bottom of the fixed plate 304, the rebound force of the spring 307 drives the card block 308 to enter the inside of the card slot 305, when the drill bit 1 enters the coal seam, the mounting ring 302 is rotated in the opposite direction to drive the baffle 303 to rotate away from the through hole 301, and the gas flows out from the through hole 301, when the coal seam is too deep, the positioning ring 502 at one end of the extension rod 4 is aligned with the fixed ring 503 on the inner circumferential wall of the drill rod 2, the butt joint sleeve 501 is sleeved on the outer circumferential wall of the butt joint head 504 along the threaded direction, and the assembly of the drill rod 2 and the extension rod 4 is completed.

[0037] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and do not limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A drill rod for gas extraction drilling, comprising a drill bit (1), characterized in that: The drill bit (1) is provided with a drill rod (2) at one end, the drill rod (2) is provided with an exhaust assembly (3) on the inner wall, the exhaust assembly (3) comprises a plurality of through holes (301) opened on the outer wall of the drill rod (2), the inner wall of the drill rod (2) is rotatably connected with a mounting ring (302), the side wall of the mounting ring (302) is provided with a plurality of baffles (303), the inner wall of the drill rod (2) is provided with a fixed plate (304), the top of the baffle (303) is provided with a plurality of clamping grooves (305), the bottom of the fixed plate (304) is provided with a plurality of accommodating grooves (306), the top of the accommodating groove (306) is provided with a spring (307), the other end of the spring (307) is provided with a clamping block (308), the other end of the drill rod (2) is provided with an extension rod (4), one end of the extension rod (4) is provided with an assembly assembly (5).

2. The drill rod for gas extraction drilling according to claim 1, characterized in that: The assembly assembly (5) comprises a butt joint sleeve (501), the butt joint sleeve (501) is provided with a positioning ring (502) at one end, the inner wall of the drill rod (2) is provided with a fixed ring (503) at one end, the side wall of the fixed ring (503) is provided with a butt joint (504).

3. The drill rod for gas extraction drilling according to claim 2, characterized in that: The cross section of the fixed plate (304) is L-shaped, and the position of the fixed plate (304) matches the position of the through hole (301).

4. The drill rod for gas extraction drilling according to claim 3, characterized in that: The clamping block (308) is spherical, and the size and position of the clamping groove (305) match the size and position of the clamping block (308).

5. The drill rod for gas extraction drilling according to claim 4, characterized in that: The bottom of the baffle (303) is provided with a sealing plate (309), and the material of the sealing plate (309) is vulcanized rubber.

6. The drill rod for gas extraction drilling according to claim 5, characterized in that: The inner wall of the drill rod (2) is provided with a limiting ring (201), the outer wall of the mounting ring (302) is provided with a limiting groove (310), and the size and position of the limiting ring (201) match the size and position of the limiting groove (310).

7. The drill rod for gas extraction drilling according to claim 6, characterized in that: The butt joint sleeve (501) and the butt joint (504) are threadedly connected, and the size of the positioning ring (502) matches the size of the fixed ring (503).

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