CN219528934U - Anti-blocking device for drill bit for coal mine - Google Patents
Anti-blocking device for drill bit for coal mine Download PDFInfo
- Publication number
- CN219528934U CN219528934U CN202320754980.9U CN202320754980U CN219528934U CN 219528934 U CN219528934 U CN 219528934U CN 202320754980 U CN202320754980 U CN 202320754980U CN 219528934 U CN219528934 U CN 219528934U
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- China
- Prior art keywords
- hole
- cylindrical cavity
- drill bit
- cooling water
- inner end
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Drilling Tools (AREA)
Abstract
The utility model relates to a drill bit anti-blocking device for a coal mine, which comprises a drill bit, wherein the drill bit is provided with a cooling water through hole, and a one-way valve device is arranged at an orifice of the cooling water through hole. The one-way valve device comprises a valve body, a valve ball and a reset extension spring, wherein threads are arranged outside the valve body, a spiral is fixedly connected to an orifice of a cooling water through hole, a cylindrical cavity is formed in the valve body, a step is arranged at the inner end of the cylindrical cavity, a spherical stop surface with the same spherical diameter as that of the valve ball is arranged on the step, the valve ball is movably arranged in the cylindrical cavity, the reset extension spring is fixedly connected to the inner end of the cylindrical cavity, and the reset extension spring is connected to the inner end of the cylindrical cavity. According to the utility model, the one-way valve is arranged in the cooling water through hole, so that the effect of preventing the cooling water through hole from being blocked can be effectively achieved, the one-way valve can be automatically closed even under the negative pressure of internal gas, more coal cinder is prevented from entering the cooling water through hole, the anti-blocking effect is effectively achieved, the overhaul frequency is reduced, and the production efficiency is improved.
Description
Technical Field
The utility model relates to a drill bit anti-blocking device for a coal mine, and belongs to the technical field of mining drill bits.
Background
In the coal mining process, a drilling machine is commonly used for drilling holes, cooling water through holes are formed in the drill bit, long-time deep drilling is easy to cause in-hole blockage, the drill bit can only be withdrawn after blockage, drilling is performed after the drill bit is discharged, and the mining efficiency is low.
Disclosure of Invention
The utility model aims to solve the technical problems that: the utility model provides a coal mine drill bit anti-blocking device to solve the problem that exists among the above-mentioned prior art.
The technical scheme adopted by the utility model is as follows: the utility model provides a colliery is with drill bit anti-blocking device, includes the drill bit, and the drill bit is provided with the cooling water through-hole, and the check valve device is installed to the drill bit's drill way of cooling water through-hole.
Further, the one-way valve device comprises a valve body, a valve ball and a reset extension spring, wherein threads are arranged outside the valve body, the threads are fixedly connected to an orifice of the cooling water through hole, a cylindrical cavity is formed in the valve body, a step is arranged at the inner end of the cylindrical cavity, a spherical stop surface with the same spherical diameter as that of the valve ball is arranged at the step, the valve ball is movably arranged in the cylindrical cavity, the reset extension spring is fixedly connected to the inner end of the cylindrical cavity, and the reset extension spring is connected to the inner end of the cylindrical cavity.
Further, the outer end of the valve body is internally and spirally connected with a cylindrical sleeve, an inner hole of the cylindrical sleeve is a jet orifice, and the diameter of the inner hole of the straight line section of the jet orifice is smaller than that of the valve ball.
Further, a conical surface hole is formed in the inner end of the jet orifice, a plurality of baffle strips which are evenly distributed at intervals are circumferentially arranged in the conical surface hole, and grooves are formed between two adjacent baffle strips.
The utility model has the beneficial effects that: compared with the prior art, the one-way valve is arranged in the cooling water through hole, so that the effect of preventing the cooling water through hole from being blocked can be effectively achieved, the one-way valve can be automatically closed even under the negative pressure of internal gas, more coal cinder is prevented from entering the cooling water through hole, the blocking prevention effect is effectively achieved, the overhaul frequency is reduced, and the production efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of a one-way valve assembly;
fig. 3 is a schematic view of the left end structure of the valve body.
Detailed Description
The utility model will be further described with reference to the accompanying drawings and specific examples.
Example 1: as shown in fig. 1-3, the anti-blocking device for the drill bit for the coal mine comprises a drill bit 1 with three wing drill points, wherein the drill bit 1 is provided with a cooling water through hole 2, the cooling water through hole 2 is arranged between two adjacent wing drill points 4, a one-way valve device 3 is arranged at the orifice of the cooling water through hole 2, and the one-way valve device is arranged, so that the blocking caused by coal slag entering the cooling water through hole can be avoided, and when cooling water is needed, the one-way valve is opened by adopting pressurized water; the one-way valve device 3 comprises a valve body 301, a valve ball 302 and a reset tension spring 303, wherein threads are arranged outside the valve body 301, the threads are fixedly connected to an orifice of a cooling water through hole 2 in a spiral mode, a cylindrical cavity 304 is formed in the valve body 301, a step 305 is arranged at the inner end of the cylindrical cavity 304, a spherical stop surface 306 which is the same as the spherical diameter of the valve ball 302 is arranged on the step 305, the valve ball 302 is movably arranged in the cylindrical cavity 304, the reset tension spring 303 is fixedly connected to the inner end of the cylindrical cavity 304, the one-way valve device is simple in structure and stable in use, the orifice is prevented from being blocked under the impact of water flow, the reset tension spring always keeps inward pulling force, the inner hole of the step is closed in a free state, the spherical stop surface is arranged, sealing reliability can be ensured, and the inner diameter of the cylindrical cavity is more than 2mm of the diameter of the valve ball, and water flow can be ensured to flow out through a circle of the valve ball.
In order to better play a role in cooling, the outer end of the valve body 301 is internally and spirally connected with a cylindrical sleeve 307, the inner hole of the cylindrical sleeve 307 is a jet port 308, the jet port 308 comprises a cylindrical straight-line section inner hole and a conical hole (with larger outside and smaller inside) arranged outside the straight-line section inner hole, the diameter of the straight-line section inner hole of the jet port 308 is smaller than that of the valve ball 302, the jet port increases the impact effect, can improve the cooling effect, can prevent larger coal slag from entering the hole section, and is also convenient for flushing the entering coal slag out, so that the blockage is avoided; in order to prevent the valve ball from blocking the inner end of the jet orifice due to overlarge water pressure, a conical surface hole 309 is formed in the inner end of the jet orifice 308, a plurality of baffle strips 310 which are uniformly arranged at intervals are circumferentially arranged in the conical surface hole 309, grooves are formed between two adjacent baffle strips 310, and when the valve ball abuts against the inner end of the cylindrical sleeve, water flow can enter the grooves and then enter the jet orifice to be flushed out.
The foregoing is merely illustrative of the present utility model, and the scope of the present utility model is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the scope of the present utility model, and therefore, the scope of the present utility model shall be defined by the scope of the appended claims.
Claims (3)
1. The utility model provides a coal mine is with drill bit anti-blocking device which characterized in that: the device comprises a drill bit (1), wherein the drill bit (1) is provided with a cooling water through hole (2), and a one-way valve device (3) is arranged at the orifice of the cooling water through hole (2); the one-way valve device (3) comprises a valve body (301), a valve ball (302) and a reset extension spring (303), wherein threads are arranged outside the valve body (301), the threads are fixedly connected to an orifice of a cooling water through hole (2), a cylindrical cavity (304) is formed in the valve body (301), a step (305) is arranged at the inner end of the cylindrical cavity (304), a spherical stop surface (306) with the same spherical diameter as the valve ball (302) is arranged at the inner end of the cylindrical cavity (305), the valve ball (302) is movably arranged in the cylindrical cavity (304), the reset extension spring (303) is fixedly connected to the inner end of the cylindrical cavity (304), and the reset extension spring (303) is connected to the inner end of the cylindrical cavity (304).
2. The coal mine drill bit anti-blocking device according to claim 1, wherein: the outer end of the valve body (301) is internally and spirally connected with a cylindrical sleeve (307), an inner hole of the cylindrical sleeve (307) is a jet orifice (308), and the diameter of the inner hole of the straight line section of the jet orifice (308) is smaller than that of the valve ball (302).
3. The coal mine drill bit anti-blocking device according to claim 2, wherein: a conical surface hole (309) is formed in the inner end of the jet orifice (308), a plurality of baffle strips (310) which are uniformly arranged at intervals are circumferentially arranged in the conical surface hole (309), and grooves are formed between two adjacent baffle strips (310).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320754980.9U CN219528934U (en) | 2023-04-07 | 2023-04-07 | Anti-blocking device for drill bit for coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320754980.9U CN219528934U (en) | 2023-04-07 | 2023-04-07 | Anti-blocking device for drill bit for coal mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219528934U true CN219528934U (en) | 2023-08-15 |
Family
ID=87586571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320754980.9U Active CN219528934U (en) | 2023-04-07 | 2023-04-07 | Anti-blocking device for drill bit for coal mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219528934U (en) |
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2023
- 2023-04-07 CN CN202320754980.9U patent/CN219528934U/en active Active
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