Linear air drill bit

Abstract

The utility model discloses a line-shaped air drill bit, which relates to the technical field of air drill bits and comprises a drill rod, a drill bit is arranged at the upper end of the drill rod, two water injection holes are drilled on the inner side of the drill bit, a chip groove is arranged on the outer side surface of the drill bit, a circular truncated cone groove is arranged on the inner side of the drill rod, and a flow guide groove is arranged in the center of the top side in the circular truncated cone groove. Through the arrangement of the drill bit and the chip groove, when the drill bit rotates to drill holes, the chip groove can improve the powder discharging effect of the drill bit, and abrasion of the drill bit caused by unsmooth powder discharging when the drill bit rotates to drill holes is avoided.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic drill bit technology, specifically a one-piece pneumatic drill bit. Background Technology

[0002] A flathead drill bit, also known as an anchor drill bit, is an important tool in drilling operations, especially in mining and construction. It can effectively improve drilling efficiency and ensure construction accuracy.

[0003] Existing flat-head air drill bits generally have poor dust removal efficiency when drilling vertically, making the drill bit prone to jamming and causing wear. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a straight-line air drill bit. By setting a retaining ring and a rubber ring, the problems in the background art can be effectively solved.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a one-piece air drill bit, including a drill rod, a drill bit at the upper end of the drill rod, two water injection holes drilled on the inner side of the drill bit, a chip removal groove on the outer side of the drill bit, a frustum groove on the inner side of the drill rod, and a flow guide groove at the center of the top side of the frustum groove.

[0006] Furthermore, the two ends of the flow guide groove are connected to the water injection hole, and the upper end of the drill bit is provided with an alloy slot.

[0007] Furthermore, a hard alloy is welded into the alloy slot, and the flow guide groove is connected to the water injection hole.

[0008] Furthermore, the drill rod and the drill bit are an integral structure, and the frustum groove is a frustum-shaped structure.

[0009] Furthermore, the cemented carbide is arc-shaped, and the cross-section of the cemented carbide is T-shaped.

[0010] Furthermore, the alloy slot has a T-shaped cross-section.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model, through the design of the drill bit and chip removal groove, enables the chip removal groove to improve the chip removal effect of the drill bit when it rotates and drills, thus preventing wear of the drill bit due to poor chip removal during rotation. Attached Figure Description

[0013] Figure 1 This is a top view of the structure of this utility model;

[0014] Figure 2This is a schematic diagram of the main structure of this utility model;

[0015] Figure 3 This is a bottom view of the drill pipe structure in this utility model;

[0016] Figure 4 This utility model Figure 2 Schematic diagram of the main sectional view structure.

[0017] In the diagram: 1. Carbide; 2. Drill bit; 3. Drill rod; 4. Water injection hole; 5. Chip removal groove; 6. Guide groove; 7. Frustum groove; 8. Carbide slot. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-4 This embodiment provides a technical solution: a straight-line air drill bit, including a drill rod 3, a drill bit 2 at the upper end of the drill rod 3, two water injection holes 4 drilled on the inner side of the drill bit 2, a chip removal groove 5 on the outer side of the drill bit 2, a frustum groove 7 on the inner side of the drill rod 3, and a flow guide groove 6 at the center of the top side of the frustum groove 7.

[0020] like Figure 1-4 As described above, when the drill bit 2 is connected to the chisel, the chisel is directly inserted into the frustum groove 7, and the water inlet in the center of the chisel is aligned with the center of the guide groove 6. After the water enters the guide groove 6, it flows into the water injection hole 4 and flows out from the water injection hole 4 on the drill bit 2, so that the drill bit 2 is cooled during drilling. At the same time, it can flush out the rock powder worn off by the rotation of the drill bit 2 from the borehole, ensuring the drilling efficiency of the drill bit 2. When the chip removal groove 5 rotates, it can discharge the rock powder generated by the rotation of the drill bit 2 in time, ensuring that the drill bit 2 will not be worn due to the failure to discharge the rock powder in time.

[0021] The two ends of the flow guide groove 6 are connected to the water injection hole 4. The upper end of the drill bit 2 is provided with an alloy slot 8. The alloy slot 8 can make the cemented carbide 1 welded and fixed on the drill bit 2, ensuring that the cemented carbide 1 is stably fixed, so that the cemented carbide 1 can grind diamonds when the drill bit 2 is drilling.

[0022] The alloy slot 8 is welded with hard alloy 1, and the flow guide groove 6 is connected to the water injection hole 4. The flow guide groove 6 can send cooling water into the water injection hole 4, so that the cooling water can be discharged to cool the drill bit 2.

[0023] The drill rod 3 and the drill bit 2 are an integral structure, and the frustum groove 7 is a frustum-shaped structure.

[0024] The cemented carbide 1 is arc-shaped, and its cross-section is T-shaped.

[0025] The alloy slot 8 has a T-shaped cross-section.

[0026] The working principle of the single-section air drill bit provided by this utility model is as follows: Figures 1-4 As shown, when the drill bit 2 is connected to the chisel, the chisel is directly inserted into the frustum groove 7. The water inlet in the center of the chisel is aligned with the center of the guide groove 6. After the water flows into the guide groove 6, it flows into the water injection hole 4 and out from the water injection hole 4 on the drill bit 2. This cools the drill bit 2 during drilling and also flushes out the rock powder worn off by the rotation of the drill bit 2, ensuring the drilling efficiency of the drill bit 2. When the chip removal groove 5 rotates, it can discharge the rock powder generated by the rotation of the drill bit 2 in a timely manner, ensuring that the drill bit 2 will not be worn due to the failure to discharge the rock powder in time.

[0027] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A straight-line pneumatic drill bit, including a drill rod (3), characterized in that: The upper end of the drill rod (3) is provided with a drill bit (2), and two water injection holes (4) are drilled on the inner side of the drill bit (2). A chip removal groove (5) is provided on the outer side of the drill bit (2). A frustum groove (7) is provided on the inner side of the drill rod (3), and a flow guide groove (6) is provided at the center of the top side of the frustum groove (7).

2. The straight-line air drill bit according to claim 1, characterized in that: The two ends of the flow guide groove (6) are connected to the water injection hole (4), and the upper end of the drill bit (2) is provided with an alloy slot (8).

3. The straight-line air drill bit according to claim 2, characterized in that: Hard alloy (1) is welded inside the alloy slot (8), and the flow guide groove (6) is connected to the water injection hole (4).

4. The straight-line air drill bit according to claim 1, characterized in that: The drill rod (3) and the drill bit (2) are an integral structure, and the frustum groove (7) is a frustum-shaped structure.

5. The straight-line air drill bit according to claim 3, characterized in that: The cemented carbide (1) is arc-shaped, and the cross-section of the cemented carbide (1) is T-shaped.

6. The straight-line air drill bit according to claim 2, characterized in that: The alloy slot (8) has a T-shaped cross-section.

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