Diamond-coated drill bit

Abstract

This invention relates to the field of drilling equipment technology, specifically to a diamond-coated drill bit, comprising a drill bit connecting rod and a drill bit; water passage holes are provided inside the drill bit connecting rod and inside the drill bit, a first water outlet device is provided at the top of the water passage holes, and the first water outlet device is provided with a plurality of first water outlet holes; a second water outlet device is provided inside the water passage holes; the second water outlet device includes a screw, a plunger, and a turntable; the turntable is rotatably connected to the inner wall of the drill bit connecting rod in the horizontal direction, and the bottom of the turntable is provided with serrations that mesh with a gear, the gear being mounted on a rotating rod; the screw is threadedly connected to the turntable, and one end of the screw is connected to a mounting plate, the mounting plate being provided with a vertical plunger that can be inserted into the first water outlet hole; the plunger has a hollow structure, with a second water outlet hole on its upper side and its lower end communicating with the water passage hole. The first and second water outlet devices of this invention provide dual protection for the cooling of the drill bit, and also prevent the water outlet holes from becoming blocked.

Description

Technical Field

[0001] This invention relates to the field of drilling equipment technology, and more specifically to a diamond-coated drill bit. Background Technology

[0002] Drill bits are essential tools in drilling operations. During drilling, drill bits often overheat due to prolonged use or encountering hard geological layers, requiring water cooling. Chinese patent CN207620728U discloses a diamond-coated drill bit, including a drill bit connecting rod and a drill bit. The drill bit is housed at the top of a hollow section of the connecting rod, and the drill bits are circumferentially distributed around a drill bit platform. The drill bit platform is located at the top of the connecting rod. The drill bit surface has a composite sheet mounting groove, and one side of the drill bit has an arc-shaped guide groove. A water passage hole is coaxially arranged inside the connecting rod, and a water spray device is located at the top of the water passage hole. A diamond-coated sheet is housed in the composite sheet mounting groove. This diamond-coated drill bit can achieve self-cleaning, extending the service life of the drill bit and improving the working environment. However, the following problem still exists: the water outlet hole is prone to clogging, thus affecting the self-cleaning function. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and to propose a diamond-coated drill bit that is less prone to clogging of the water outlet and can provide dual protection, thus better completing the self-cleaning function of the drill bit.

[0004] The technical solution adopted by this invention to solve its technical problem is:

[0005] A diamond-coated drill bit includes a drill bit connecting rod and a drill bit. The drill bit is mounted on the top of the drill bit connecting rod. Water passage holes are provided inside the drill bit connecting rod and the drill bit. A first water outlet device is provided at the top of the water passage holes, and the first water outlet device has several first water outlet holes. A second water outlet device is provided inside the water passage holes. The second water outlet device includes a screw, a plunger, and a turntable. The turntable is snapped onto the inner wall of the drill bit connecting rod and is rotatably connected to the inner wall of the drill bit connecting rod in a horizontal direction. The bottom of the turntable has serrations, the bottom of which meshes with a gear. The gear is mounted on one end of the rotating rod, and the other end of the rotating rod passes through the side wall of the drill bit connecting rod and is connected to a handle. The screw is threadedly connected to the turntable, and one end of the screw is connected to a mounting plate. A vertical plunger is provided on the mounting plate, and the plunger can be inserted into the first water outlet hole of the first water outlet device. The plunger has a hollow structure, with a second water outlet hole on its upper side and its lower end communicating with the water passage hole. When the second water outlet passes through the first water outlet and is located outside the water passage, water is sprayed onto the drill bit to clean and cool it. When the second water outlet is inside the water passage, water can be sprayed onto the side wall of the water passage, which better prevents impurities from remaining on the side wall. Water can also exit through the first water outlet, further cooling the drill bit, providing double protection for its cooling function. Simultaneously, the insertion rod can pass through the first water outlet of the first water outlet device, preventing blockage. The first water outlet can also scrape against the second water outlet, cleaning it and ensuring unobstructed flow to maintain the drill bit's self-cleaning function.

[0006] Furthermore, the other end of the screw passes through a horizontal rod, which is snapped onto the inner wall of the drill bit connecting rod and can slide up and down in the vertical direction relative to the inner wall of the drill bit connecting rod.

[0007] Furthermore, the outer diameter of the insertion rod is equal to the diameter of the first water outlet hole.

[0008] Furthermore, the number of the insertion rods is the same as the number of the first water outlet holes.

[0009] Furthermore, the rotary table is installed near the upper end of the drill bit connecting rod for easy installation and disassembly.

[0010] Furthermore, the bottom of the drill bit connecting rod is threadedly connected to the drill rod.

[0011] Furthermore, the first water outlet device has a frustum structure with a hollow interior, and the first water outlet hole is located on the side wall of the first water outlet device.

[0012] Furthermore, the insertion rod penetrates the mounting plate and communicates with the water passage hole.

[0013] Furthermore, both the mounting plate and the screw are hollow structures, with the upper part connected to the insertion rod and the lower part connected to the screw, and the screw connected to the water passage hole.

[0014] Furthermore, the mounting plate has a hollow structure, with the upper part connected to the insertion rod and the lower part connected to the water passage hole.

[0015] Technical effects of the present invention:

[0016] Compared with the prior art, the diamond coated drill bit of the present invention has a first water outlet device and a second water outlet device that provide dual protection for the cooling of the drill bit, and can also prevent the water outlet from becoming blocked, thus better completing the self-cleaning function of the drill bit. Attached Figure Description

[0017] Figure 1 This is a schematic diagram illustrating the structural principle of the diamond-coated drill bit of the present invention.

[0018] In the diagram, 1. Drill bit connecting rod; 2. Drill bit; 3. Water passage hole; 4. First water outlet device; 5. Second water outlet device; 41. First water outlet hole; 51. Screw; 52. Insert rod; 53. Turntable; 54. Saw teeth; 55. Gear; 56. Rotating rod; 57. Handle; 58. Mounting plate; 59. Second water outlet hole; 510. Horizontal bar. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0020] Example 1:

[0021] like Figure 1 As shown, this embodiment relates to a diamond-coated drill bit, which includes a drill bit connecting rod 1 and a drill bit 2; the top of the drill bit connecting rod 1 is connected to the drill bit 2, and the bottom is threaded to the drill rod; water passage holes 3 are provided inside the drill bit connecting rod 1 and the drill bit 2.

[0022] The top of the water passage 3 is provided with a first water outlet device 4, which is a frustum structure with a hollow interior. The first water outlet device 4 has a first water outlet hole 41 on its side wall.

[0023] The second water outlet device 5 is located inside the water passage hole 3. The second water outlet device 5 includes a screw 51, a plug 52 and a turntable 53.

[0024] The turntable 53 is snapped onto the inner wall of the drill bit connecting rod 1 near the upper end and is rotatably connected to the inner wall of the drill bit connecting rod 1 in the horizontal direction. The bottom of the turntable 53 is provided with serrations 54, and the bottom of the serrations 54 meshes with the gear 55. The gear 55 is installed at one end of the rotating rod 56, and the other end of the rotating rod 56 passes through the side wall of the drill bit connecting rod 1 and is connected to the handle 57.

[0025] The screw 51 is threadedly connected to the turntable 53. One end of the screw 51 is connected to the mounting plate 58. A vertical insertion rod 52 is provided on the mounting plate 58. The outer diameter of the insertion rod 52 is equal to the diameter of the first water outlet 41, and the number of insertion rods 52 is the same as the number of first water outlets 41. Each insertion rod 52 can be inserted into the corresponding first water outlet 41.

[0026] The insertion rod 52 is a hollow structure with a second water outlet 59 on its upper side and a lower end connected to the water passage hole 3. Specifically, in one embodiment, the insertion rod 52 penetrates the mounting plate 58 and connects to the water passage hole 3. In another embodiment, both the mounting plate 58 and the screw 51 are hollow structures, connected to the insertion rod 52 at the top and the screw 51 at the bottom, with the screw 51 connected to the water passage hole 3. In a third embodiment, the mounting plate 58 is hollow, connected to the insertion rod 52 at the top and the water passage hole 3 at the bottom. When the second water outlet 59 passes through the first water outlet 41 and is located outside the water passage hole 3, water is sprayed onto the drill bit 2 to clean and cool it. When the second water outlet 59 is located inside the water passage hole 3, water can be sprayed onto the side wall of the water passage hole 3. At this time, water can also exit through the first water outlet 41, similarly cooling the drill bit 2, providing double protection for its cooling. In addition, the insertion rod 52 can pass through the first water outlet hole 41 of the first water outlet device 4, which can prevent the first water outlet hole 41 from being blocked. The first water outlet hole 41 can also scrape the second water outlet hole 59, which also plays a role in cleaning the second water outlet hole 59, thus better ensuring the smooth flow of the water outlet and preventing the water outlet from being blocked.

[0027] The other end of the screw 51 passes through the horizontal rod 510. The horizontal rod 510 is snapped onto the inner wall of the drill bit connecting rod 1 and can slide up and down in the vertical direction relative to the inner wall of the drill bit connecting rod 1. On the one hand, it can better prevent the screw 51 from rotating with the turntable 53 and ensure that the insertion rod 52 can be inserted into the first water outlet hole 41. On the other hand, it can prevent the screw 51 from detaching from the turntable 53.

[0028] To further improve the water spraying effect, a nozzle can be installed on the second water outlet 59 to enhance the spraying effect. It should be noted that the nozzle can pass through the first water outlet 41, ensuring that the insertion rod 52 can pass through the first water outlet 41.

[0029] Working Principle: During high-speed rotation, the drill bit 2 of this invention is prone to overheating due to prolonged use or encountering hard geological layers. To reduce the temperature of the drill bit 2, the second water outlet 59 can pass through the first water outlet 41 to the outside of the water passage 3, cleaning and cooling the drill bit 2 through the second water outlet 59. When the second water outlet 59 is located inside the water passage 3, it can spray water onto the side wall of the water passage 3, better preventing impurities from remaining on the side wall. In addition, water can also exit through the first water outlet 41, which also cools the drill bit 2, providing double protection for its cooling. Simultaneously, the insertion rod 52 can pass through the first water outlet 41 of the first water outlet device 4, preventing blockage of the first water outlet 41. The first water outlet 41 can also scrape the second water outlet 59, cleaning it and ensuring unobstructed flow to guarantee the self-cleaning function of the drill bit 2. Before the drill bit connecting rod 1 is installed on the drill bit 2, the screw 51 can be moved downward by the turntable 53 so that the screw 51 is placed as close as possible to the water passage hole 3, thereby reducing the space occupied by the second water outlet device 5 and preventing damage to the second water outlet device 5.

[0030] The above-described specific embodiments are merely specific examples of the present invention. The patent protection scope of the present invention includes, but is not limited to, the above-described specific embodiments. Any appropriate changes or modifications made by a person skilled in the art that conform to the claims of the present invention should fall within the patent protection scope of the present invention.

Claims

1. A diamond-coated drill bit (2), comprising a drill bit connecting rod (1) and a drill bit (2); the drill bit (2) is mounted on the top of the drill bit connecting rod (1), and a water passage hole (3) is provided inside the drill bit connecting rod (1) and inside the drill bit (2), a first water outlet device (4) is provided on the top of the water passage hole (3), and a plurality of first water outlet holes (41) are provided on the first water outlet device (4); characterized in that: The water passage (3) is equipped with a second water outlet device (5); the second water outlet device (5) includes a screw (51), a plug rod (52), and a turntable (53); the turntable (53) is snapped onto the inner wall of the drill bit connecting rod (1) and is rotatably connected to the inner wall of the drill bit connecting rod (1) in the horizontal direction; the bottom of the turntable (53) is provided with serrations (54), the bottom of the serrations (54) meshes with a gear (55), the gear (55) is installed at one end of the rotating rod (56), and the other end of the rotating rod (56) passes through the side wall of the drill bit connecting rod (1) and is connected to the handle (57); the screw (51) The screw (51) is threaded to the turntable (53). One end of the screw (51) is connected to the mounting plate (58). A vertical insertion rod (52) is provided on the mounting plate (58). The insertion rod (52) can be inserted into the first water outlet hole (41) of the first water outlet device (4). The insertion rod (52) is hollow. A second water outlet hole (59) is opened on the upper side. The lower end is connected to the water passage hole (3). The other end of the screw (51) passes through the horizontal rod (510). The horizontal rod (510) is snapped on the inner wall of the drill bit connecting rod (1) and can slide up and down in the vertical direction relative to the inner wall of the drill bit connecting rod (1).

2. The diamond-coated drill bit (2) according to claim 1, characterized in that: The outer diameter of the insertion rod (52) is equal to the diameter of the first water outlet (41).

3. The diamond-coated drill bit (2) according to claim 1, characterized in that: The number of the inserts (52) is the same as the number of the first water outlet (41).

4. The diamond-coated drill bit (2) according to claim 1, characterized in that: The turntable (53) is installed near the upper end of the drill bit connecting rod (1).

5. The diamond-coated drill bit (2) according to claim 1, characterized in that: The bottom of the drill bit connecting rod (1) is threaded to the drill rod.

6. The diamond-coated drill bit (2) according to claim 1, characterized in that: The first water outlet device (4) has a frustum structure and is hollow inside. The first water outlet hole (41) is located on the side wall of the first water outlet device (4).

7. The diamond-coated drill bit (2) according to any one of claims 1-6, characterized in that: The insertion rod (52) passes through the mounting plate (58) and communicates with the water passage hole (3).

8. The diamond-coated drill bit (2) according to any one of claims 1-6, characterized in that: The mounting plate (58) and the screw (51) are both hollow structures. The upper part is connected to the insertion rod (52), and the lower part is connected to the screw (51). The screw (51) is connected to the water passage hole (3).

9. The diamond-coated drill bit (2) according to any one of claims 1-6, characterized in that: The mounting plate (58) is a hollow structure, with the upper part connected to the insertion rod (52) and the lower part connected to the water passage hole (3).

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