CN214787205U - Diamond bit special for hard and brittle stratum - Google Patents
Diamond bit special for hard and brittle stratum Download PDFInfo
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- CN214787205U CN214787205U CN202121354439.6U CN202121354439U CN214787205U CN 214787205 U CN214787205 U CN 214787205U CN 202121354439 U CN202121354439 U CN 202121354439U CN 214787205 U CN214787205 U CN 214787205U
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- drill bit
- brittle
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Abstract
The diamond drill bit special for the hard and brittle stratum comprises a drill bit joint and a matrix, wherein the drill bit joint is connected with the matrix, the working end of the matrix is provided with an annular guiding step protruding outwards, the diameter of the guiding step is smaller than that of the matrix, diameter-keeping glomerocryst slightly protruding from the inner wall and the outer wall of the matrix close to the side of the drill bit joint is circumferentially distributed on the inner wall and the outer wall of the matrix, the matrix is circumferentially provided with a plurality of water outlet holes penetrating through the lower end of the guiding step, the outer wall of the matrix is provided with a water outlet groove communicated with the water outlet holes, during drilling, the guiding step is firstly contacted with the hard and brittle stratum, during drilling, due to the special structure of the hard and brittle stratum, the deviation from a preset position during drilling is avoided through the guiding step, drilling inclination is prevented, and the diameter-keeping glomerocryst is harder in self structure and is more wear-resistant; the drill bit has long service life and higher drilling efficiency than the conventional drill bit.
Description
Technical Field
The utility model relates to a drilling equipment technical field, in particular to special diamond bit in hard and brittle stratum.
Background
When a hard and brittle stratum with strong abrasiveness is drilled, the working environment of the diamond drill bit is very severe, the phenomena of block falling, matrix falling, short service life and the like of the drill bit often occur, the progress of drilling construction is influenced, the drilling cost is increased, the economic benefit is obviously reduced, and the method is a long-standing technical problem in the drilling industry.
Disclosure of Invention
The utility model aims at the problem in the background art with not enough, provide a special diamond bit in hard and brittle stratum.
The diamond drill bit special for the hard and brittle stratum comprises a drill bit joint and a matrix, wherein the drill bit joint is connected with the matrix, the working end of the matrix is provided with an annular guide step protruding outwards, the diameter of the guide step is smaller than that of the matrix, diameter-keeping polycrystalline slightly protruding from the inner wall and the outer wall of the matrix close to the inner wall of the drill bit joint side is circumferentially distributed on the outer wall of the matrix, a plurality of water outlet holes extending to the lower end of the guide step are formed in the circumferential direction of the matrix, and a water outlet groove communicated with the water outlet holes is formed in the outer wall of the matrix.
The utility model has the advantages that:
during drilling, the guide step is firstly contacted with the hard and brittle stratum, and during the drilling process, due to the special structure of the hard and brittle stratum, the guide step is used for drilling, so that deviation from a preset position during drilling is avoided, drilling inclination is prevented, and the diameter-keeping polycrystalline structure is harder and more wear-resistant; the drill bit has long service life and higher drilling efficiency than the conventional drill bit.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a cross-sectional view at a-a in fig. 1.
Fig. 3 is a front view of the present invention.
Fig. 4 is a sectional view taken at B-B in fig. 3.
Detailed Description
Referring to fig. 1 to 4, the diamond drill bit for hard and brittle formations comprises a drill bit joint 1 and a matrix 2, the drill bit joint 1 is connected with the matrix 2, the working end of the matrix 2 is provided with an annular guiding step 3 protruding outwards, the diameter of the guiding step 3 is smaller than that of the matrix 2, diameter-maintaining polycrystalline 4 slightly protruding from the inner wall and the outer wall of the matrix 2 near the inner wall and the outer wall of the drill bit joint 1 are circumferentially distributed on the matrix 2, the matrix 2 is circumferentially provided with a plurality of water outlet holes 5 extending to the lower end of the guiding step 3, and the outer wall of the matrix 2 is provided with a water outlet groove 6 communicated with the water outlet holes 5.
Furthermore, the inner wall of the carcass 2 is provided with an internal thread.
Further, the matrix 2 is embedded with diamond particles.
Furthermore, the guiding step 3 is embedded with diamond particles.
Furthermore, each group of 3 gauge polycrystalline 4 is embedded between two adjacent water outlet grooves 6 of the tire body 2.
The working principle and the using process of the embodiment are as follows:
during drilling, the guide step 3 is firstly contacted with a hard and brittle stratum, during the drilling process, due to the special structure of the hard and brittle stratum, the hard and brittle stratum is drilled through the guide step 3, deviation from a preset position during drilling is avoided, drilling inclination is prevented, the diameter-keeping polycrystalline 4 is harder in self structure and more wear-resistant, the effect of passively protecting the matrix 2 is achieved, the matrix 2 is prevented from being excessively ground, water can directly flow out of a water outlet hole 5 in the inner wall of the matrix 2 during drilling and overflows to the outer wall of the matrix 2 through a water outlet groove 6, a rock core can be protected, crushing is prevented, the service life of the drill bit is long, and the drilling efficiency is higher than that of a conventional drill bit.
Claims (5)
1. Hard and brittle stratum special diamond bit, its characterized in that: including drill bit joint (1) and matrix (2), drill bit joint (1) is connected with matrix (2), matrix (2) work end is equipped with outside convex cyclic annular and leads positive step (3), lead positive step (3) diameter and be less than matrix (2) diameter, circumferential distribution has guarantor footpath glomerocryst (4) that slightly protrusion has matrix (2) inner wall and outer wall on matrix (2) side inner wall and the outer wall, matrix (2) circumference is equipped with a plurality of extensions and runs through apopore (5) to leading positive step (3) lower extreme, matrix (2) outer wall is equipped with out basin (6) that are linked together with apopore (5).
2. The diamond bit special for hard and brittle strata as claimed in claim 1, characterized in that: the inner wall of the tire body (2) is provided with internal threads.
3. The diamond bit special for hard and brittle strata as claimed in claim 1, characterized in that: diamond particles are embedded in the matrix (2).
4. The diamond bit special for hard and brittle strata as claimed in claim 1, characterized in that: diamond particles are embedded in the guide steps (3).
5. The diamond bit special for hard and brittle strata as claimed in claim 1, characterized in that: the gauge polycrystalline (4) is embedded between two adjacent water outlet grooves (6) of the tire body (2) in each group of 3 pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121354439.6U CN214787205U (en) | 2021-06-18 | 2021-06-18 | Diamond bit special for hard and brittle stratum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121354439.6U CN214787205U (en) | 2021-06-18 | 2021-06-18 | Diamond bit special for hard and brittle stratum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214787205U true CN214787205U (en) | 2021-11-19 |
Family
ID=78713323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121354439.6U Active CN214787205U (en) | 2021-06-18 | 2021-06-18 | Diamond bit special for hard and brittle stratum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214787205U (en) |
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2021
- 2021-06-18 CN CN202121354439.6U patent/CN214787205U/en active Active
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