Diamond drill bit capable of preventing angle deviation

Abstract

The utility model discloses a diamond drill bit capable of preventing angle deviation, which comprises a drill bit main body, a plurality of drill teeth arranged at the bottom of the drill bit main body, an anti-deviation mechanism arranged at the bottom of the drill teeth and used for preventing the drill bit from deviating when the drill bit is used for drilling, and a spiral groove arranged on the outer side of the bottom of the drill bit main body. A mounting ring is arranged on the inner side of the bottom of the drill bit body, a mounting block is arranged on the mounting ring, the mounting ring is welded to the inner side of the drill bit body, the mounting block is welded to the bottom of the drill bit body, and a detachable non-coring pipe is arranged on the inner side of the drill bit body. During rotation, the fixed block is firstly drilled into the lower portion of a stone so as to prevent the stone from deviating, when coring is not needed, the inner side non-coring pipe and the core crushing piece are rotated so that the core crushing block can crush the stone, and the rotating opening rotates on the rotating rod so that the core crushing piece can rotate so as to prevent the inner side gravel from being clamped.

Description

Technical Field

[0001] The utility model relates to the technical field of diamond drill bits, in particular to a diamond drill bit capable of preventing angle deviation. Background Art

[0002] The drill bit with cutting edge is called diamond drill bit. This drill bit is an integrated drill bit. The whole drill bit has no moving parts and a relatively simple structure. It has high strength, high wear resistance and impact resistance. It is one of the three new drilling technologies in the world in the 1980s. Field use has proved that diamond drill bits have the advantages of fast speed, large footage, long life, stable operation, few downhole accidents and good wellbore quality when drilling in soft-medium-hard formations. Diamond drill bits not only have a long service life, but can also be reused. The diamond drill bits returned to the factory for repair have the same effect as the factory diamond drill bits, which can save a lot of drilling costs. The existing diamond drill bits are prone to deviation when drilling holes at the beginning, and in the working process, due to poor chip removal during drilling, blockage may occur on the inside. Utility Model Content

[0003] The utility model aims to provide a diamond drill bit which can prevent angle deviation, so as to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A diamond drill bit for preventing angle deviation comprises a drill bit body, a plurality of drill teeth are arranged at the bottom of the drill bit body, an anti-deviation mechanism is arranged at the bottom of the drill teeth, the anti-deviation mechanism prevents the drill bit from deviating when drilling, a spiral groove is arranged on the outer side of the bottom of the drill bit body, a mounting ring is arranged on the inner side of the bottom of the drill bit body, a mounting block is arranged on the mounting ring, the mounting ring is welded to the inner side of the drill bit body, the mounting block is welded to the bottom of the drill bit body, and a detachable non-coring tube is arranged on the inner side of the drill bit body.

[0006] In a preferred embodiment of the present utility model, a mounting thread is provided on the upper outer side of the drill body.

[0007] In a preferred embodiment of the utility model, the anti-deviation mechanism includes a fixed block, the bottom of the fixed block is sharp, a slope is provided on one side of the drill tooth, a ladder block is provided on the slope, and the top of the ladder block is parallel to the slope.

[0008] In a preferred embodiment of the present invention, a wear-resistant block is arranged on the outer side of the drill tooth.

[0009] In a preferred embodiment of the present invention, an inner rotating tooth is arranged at the bottom of the mounting ring, and a crushing tooth is arranged at one side of the bottom of the mounting block.

[0010] In a preferred embodiment of the utility model, two core breaking pieces are arranged inside the non-coring tube, and core breaking blocks are arranged outside the core breaking pieces.

[0011] In a preferred embodiment of the utility model, a rotating port is arranged inside the core block, a rotating rod is arranged inside the non-coring tube, the rotating rod is fixed inside the non-coring tube, and the rotating port rotates on the rotating rod.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention.

[0013] Beneficial effect: When the drill bit is drilling, the sharp shape at the bottom of the fixed block is at the bottom. When rotating, the fixed block drills into the stone first to prevent it from deflecting. When rotating, the ladder block and the drill teeth simultaneously crush the stone on a large scale, so that it can drill more quickly. The spiral groove serves as the outer track to keep the diamond drill bit stable. When coring is not required, the inner non-coring tube and the core breaking piece are rotated to make the core breaking block crush the stone, and the core breaking piece is rotated on the rotating rod through the rotating port to prevent the inner sand and gravel from getting stuck.

[0014] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0016] Figure 1 A schematic diagram of the main structure of a diamond drill bit for preventing angle deviation;

[0017] Figure 2 A schematic diagram of the cross-sectional structure of a diamond drill bit for preventing angle deviation;

[0018] Figure 3 A schematic diagram of the bottom structure of a drill bit body in a diamond drill bit for preventing angle deviation;

[0019] Figure 4 A schematic diagram of a mounting ring structure in a diamond drill bit for preventing angle deviation;

[0020] Figure 5 The figure is a schematic diagram of the structure of a broken core piece in a diamond drill bit for preventing angle deviation.

[0021] In the figure: 1. drill bit body; 11. mounting thread; 12. spiral groove; 13. drill tooth; 14. inclined surface; 2. fixing block; 21. ladder block; 22. wear-resistant block; 3. mounting ring; 31. mounting block; 32. crushing tooth; 33. internal rotating tooth; 4. non-core tube; 41. rotating rod; 42. rotating mouth; 43. core breaking block; 44. core breaking piece. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention. Example 1

[0023] Please refer to Figure 1-4 The utility model discloses a diamond drill bit for preventing angle deviation, comprising a drill bit body 1, which is the main structure of the diamond drill bit for preventing angle deviation. A plurality of drill teeth 13 are arranged at the bottom of the drill bit body 1, and the drill teeth 13 are the outer crushing structure of the diamond drill bit, that is, driving the diamond drill bit to drill holes. An installation thread 11 is arranged at the outer side of the upper part of the drill bit body 1, and the installation thread 11 is the installation structure of the drill bit body 1. A spiral groove 12 is arranged at the outer side of the bottom of the drill bit body 1. When the diamond drill bit is drilling, the spiral groove 12 serves as an outer track to keep the diamond drill bit stable.

[0024] An anti-drift mechanism is provided at the bottom of the drill tooth 13, which prevents the drill bit from drifting when drilling. The anti-drift mechanism includes a fixed block 2, and the bottom of the fixed block 2 is sharp. When drilling, the sharp tip of the bottom of the fixed block 2 is at the bottom. When rotating, the fixed block 2 drills into the stone first, thereby preventing it from drifting. A slope 14 is provided on one side of the drill tooth 13, and a ladder block 21 is provided on the slope 14. The top of the ladder block 21 is parallel to the slope 14, that is, when rotating, the ladder block 21 and the drill tooth 13 simultaneously crush the stone on a large scale, so that it can drill more quickly. A wear-resistant block 22 is provided on the outside of the drill tooth 13, and the wear-resistant block 22 ensures that its outer side is rough to avoid being too smooth and inconvenient for drilling.

[0025] A mounting ring 3 is provided on the inner side of the bottom of the drill bit body 1, and a mounting block 31 is provided on the mounting ring 3. The mounting ring 3 is welded to the inner side of the drill bit body 1, and the mounting block 31 is welded to the bottom of the drill bit body 1. The mounting ring 3 and the mounting block 31 are both mounting structures. An internal spiral tooth 33 is provided at the bottom of the mounting ring 3, and a crushing tooth 32 is provided on one side of the bottom of the mounting block 31. The internal spiral tooth 33 and the crushing tooth 32 are used to crush and sample the inner block of the stone. The stone is crushed to a certain diameter by the crushing tooth 32, and then it is finally repaired by the internal spiral tooth 33, so as to sample the stone. Example 2

[0026] Please refer to Figure 1-5 A detachable non-coring tube 4 is provided on the inner side of the drill body 1, two core breaking pieces 44 are provided inside the non-coring tube 4, a core breaking block 43 is provided on the outer side of the core breaking piece 44, a swivel 42 is provided on the inner side of the core breaking block 43, a rotating rod 41 is provided inside the non-coring tube 4, and the rotating rod 41 is fixed inside the non-coring tube 4. When coring is not needed, the non-coring tube 4 is installed on the inner side of the drill body 1, and the drill body 1 drives the inner non-coring tube 4 and the core breaking piece 44 to rotate, so that the core breaking block 43 crushes the stone, and the rotating rod 41 is rotated through the swivel 42 to rotate the core breaking piece 44, so as to prevent the sand and gravel inside from getting stuck.

[0027] The working principle of the utility model is as follows: when in use, the mounting ring 3 is welded to the inner side of the drill body 1, and the mounting block 31 is welded to the bottom of the drill body 1. When drilling, the sharp shape at the bottom of the fixing block 2 is at the bottom. When rotating, the fixing block 2 first drills under the stone to prevent it from deviating. When rotating, the ladder block 21 and the drill teeth 13 simultaneously crush the stone in a large range, so that it can drill more quickly. The spiral groove 12 serves as the outer track to keep the diamond drill stable, and the wear-resistant block 22 protects the diamond drill from being damaged. The outer surface of the drill bit is roughened to avoid being too smooth and inconvenient to drill holes. The crushing teeth 32 are used to crush the stone to a certain diameter, and then the inner rotating teeth 33 are used to make final repairs to the stone, so as to sample the stone. When coring is not required, the non-coring tube 4 is installed on the inner side of the drill bit body 1, and the inner non-coring tube 4 and the core crushing piece 44 are rotated to make the core crushing block 43 crush the stone, and the rotating mouth 42 is rotated on the rotating rod 41 to make the core crushing piece 44 rotate, so as to avoid the inner sand and gravel from getting stuck.

[0028] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A diamond drill bit for preventing angle deviation, comprising a drill bit body (1), characterized in that: A plurality of drill teeth (13) are arranged at the bottom of the drill bit body (1), an anti-deviating mechanism is arranged at the bottom of the drill teeth (13), and the anti-deviating mechanism prevents the drill bit from deviating when drilling a hole; a spiral groove (12) is arranged on the outside of the bottom of the drill bit body (1); a mounting ring (3) is arranged on the inside of the bottom of the drill bit body (1); a mounting block (31) is arranged on the mounting ring (3); the mounting ring (3) is welded to the inside of the drill bit body (1); the mounting block (31) is welded to the bottom of the drill bit body (1); and a detachable non-coring tube (4) is arranged on the inside of the drill bit body (1).

2. A diamond drill bit for preventing angle deviation according to claim 1, characterized in that: A mounting thread (11) is provided on the upper outer side of the drill bit body (1).

3. A diamond drill bit for preventing angle deviation according to claim 1, characterized in that: The anti-deviating mechanism comprises a fixed block (2), the bottom of the fixed block (2) is sharp, a slope (14) is provided on one side of the drill tooth (13), a ladder block (21) is provided on the slope (14), and the top of the ladder block (21) is parallel to the slope (14).

4. A diamond drill bit for preventing angle deviation according to claim 1, characterized in that: A wear-resistant block (22) is arranged on the outside of the drill tooth (13).

5. A diamond drill bit for preventing angle deviation according to claim 1, characterized in that: The bottom of the mounting ring (3) is provided with an internally rotating tooth (33), and one side of the bottom of the mounting block (31) is provided with a crushing tooth (32).

6. A diamond drill bit for preventing angle deviation according to claim 1, characterized in that: Two core-breaking pieces (44) are arranged inside the non-coring tube (4), and core-breaking blocks (43) are arranged outside the core-breaking pieces (44).

7. A diamond drill bit for preventing angle deviation according to claim 6, characterized in that: A rotating port (42) is provided inside the core block (43), a rotating rod (41) is provided inside the non-coring tube (4), the rotating rod (41) is fixed inside the non-coring tube (4), and the rotating port (42) rotates on the rotating rod (41).

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