CN220599738U

CN220599738U - Core drill bit is got to many water gaps

Info

Publication number: CN220599738U
Application number: CN202322298175.2U
Authority: CN
Inventors: 王晓健; 于嘉威
Original assignee: China Drilling Geological Equipment Ltd
Current assignee: China Drilling Geological Equipment Ltd
Priority date: 2023-08-24
Filing date: 2023-08-24
Publication date: 2024-03-15
Anticipated expiration: 2033-08-24

Abstract

The utility model relates to the technical field of geological exploration, and particularly provides a multi-nozzle coring bit which comprises a main body and a bit connected to the main body, wherein a plurality of equidistant annular drilling teeth are arranged on the bit, and water nozzles are arranged between adjacent drilling teeth; the upper end of the auxiliary water gap extends to the surface of the drilling tooth, a tooth groove is formed in the upper end of the drilling tooth, a hemispherical bulge is arranged in the tooth groove, and the upper end of the hemispherical bulge is higher than the upper end of the drilling tooth so as to form a step difference; the utility model has reasonable design and compact structure, the arrangement of the multiple water ports greatly increases the water flow, improves the effect of the water flow for cooling the drill bit and the chips generated in the core taking operation process of the flushing well, and simultaneously, the auxiliary water ports form cutting edges on the drill teeth, thereby being beneficial to better drilling; the hemispherical bulges are arranged, so that better rock taking is facilitated, the tooth socket alternate relay is matched, the working effect of the drill bit is improved, and the practicability is high.

Description

Core drill bit is got to many water gaps

Technical Field

The utility model relates to the technical field of geological exploration, in particular to a multi-water gap coring bit

Background

Referring to fig. 1, a drill bit is generally manufactured from a hard metal material, and diamond is adopted in a bit part to realize drilling; the working face of the drill bit is provided with a water gap, the working area of the drill bit is cooled by water flow, and scraps generated in the well logging coring operation process are flushed by water flow.

However, the coring bit adopted in the prior art is a single-group water gap, the cooling water flow rate of the introduced cooling water is insufficient for cooling the bit rotating at high speed, and the problem of drill burning is easy to occur; moreover, the coring bit adopted in the prior art has fewer cutting edges, and influences the working efficiency of bit drilling coring.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a multi-nozzle core drill bit, which is used for solving the problem that the cooling effect of the single-nozzle core drill bit adopted in the prior art is poor, and the problems that the drill bit cutting edge is less and the drilling efficiency is poor.

In order to achieve the above and other related objects, the present utility model provides a multi-nozzle core drill bit, comprising a main body and a cutter head connected to the main body, wherein a plurality of equally spaced annular drilling teeth are arranged on the cutter head, and a nozzle is arranged between adjacent drilling teeth;

the drilling teeth are provided with auxiliary water gaps, and the upper ends of the auxiliary water gaps extend to the surfaces of the drilling teeth and are used for forming cutting edges and increasing drilling pressure;

the upper end of the drill tooth is provided with a tooth slot, and a hemispherical bulge is arranged in the tooth slot and used for rapidly cutting.

In an embodiment of the present utility model, an upper end of the hemispherical protrusion is higher than an upper end of the drilling tooth to form a step.

In an embodiment of the utility model, a base is integrally formed at the lower end of the cutter head, and the cutter head is welded on the main body through the base.

In an embodiment of the utility model, the lower ends of the nozzle and the secondary nozzle extend onto the body around the base.

In an embodiment of the present utility model, the drill teeth are embedded with radially embedded alloy gauge strips, and the alloy gauge strips are simultaneously connected to the base in a penetrating manner.

In an embodiment of the utility model, the tool bit is made of cemented carbide material.

As described above, the multi-nozzle core drill bit of the utility model has the following beneficial effects:

1. by arranging the auxiliary water gap, water flow can be increased, the cooling effect on the working area of the drill bit is improved, and the drill bit is not easy to burn; the arrangement of the auxiliary water gap relatively reduces the drilling area of the drill teeth, increases the drilling pressure and the cutting edge, has quicker footage, particularly has more prominent scraping effect when the stratum is softened, and improves the working efficiency of drilling and coring of the drill bit;

2. by arranging the hemispherical bulges, the drill bit touches the rock through the hemispherical bulges when in work, thereby being beneficial to rapidly taking out the blade and taking the rock; in the working process, the hemispherical bulges can be matched with the upper ends of the drill teeth to form alternating working relay, so that the effect of drilling and coring of the drill bit is improved, and the service life of the cutter head is prolonged;

3. the multi-nozzle coring bit provided by the utility model has reasonable design and compact structure, the water flow is greatly increased by the arrangement of the multi-nozzle, the effects of cooling the bit by water flow and flushing chips generated in the well coring operation process are improved, and meanwhile, the auxiliary nozzle forms a cutting edge on the drilling tooth, so that better drilling is facilitated; the hemispherical bulges are arranged, so that better rock taking is facilitated, the tooth socket alternate relay is matched, the working effect of the drill bit is improved, and the practicability is high.

Drawings

Fig. 1 shows a schematic top view of a single-nozzle coring bit as disclosed in the prior art.

Fig. 2 is a schematic perspective view of a multi-nozzle coring bit according to the present disclosure.

Fig. 3 is a schematic diagram showing the front view of the multi-nozzle coring bit of the present disclosure.

FIG. 4 is a schematic top view of the multiple nozzle coring bit of the present disclosure with the body removed.

Description of element reference numerals

A main body 1; a cutter head 2; drilling teeth 21; a nozzle 22; a secondary nozzle 23; tooth slots 24; a base 25; hemispherical protrusions 3; alloy gauge strip 4.

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.

Please refer to fig. 2 to fig. 4. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the utility model, are not intended to be critical to the essential characteristics of the utility model, but are intended to fall within the spirit and scope of the utility model. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.

Referring to fig. 2-4, the present utility model provides a multi-nozzle core drill bit, which comprises a main body 1 and a cutter head 2 connected to the main body 1, wherein the cutter head 2 is made of cemented carbide material; a plurality of equidistant annular drilling teeth 21 are arranged on the cutter head 2, and water gaps 22 are arranged between adjacent drilling teeth 21; the drill tooth 21 is provided with an auxiliary water gap 23, and the upper end of the auxiliary water gap 23 extends to the surface of the drill tooth; by arranging the auxiliary water gap 23, water flow can be increased, the cooling effect on the working area of the drill bit is improved, and the drill bit is not easy to burn; and the arrangement of the auxiliary water gap 23 relatively reduces the drilling area of the drilling teeth, increases the drilling pressure and the cutting edge, has quicker footage, more prominent scraping effect when especially beating soft stratum, and improves the working efficiency of drilling and coring of the drill bit

The lower end of the cutter head 2 is integrally formed with a base 25, and the cutter head 2 is welded on the main body 1 through the base 25; the assembly effect of the cutter head and the main body 1 is improved; the lower ends of the nozzle 22 and the secondary nozzle 23 extend to the body 1 around the base 25.

The upper end of the drill tooth 21 is provided with a tooth slot 24, a hemispherical protrusion 3 is arranged in the tooth slot 24, and when the drill bit works, the hemispherical protrusion 3 touches rock, so that rapid cutting is facilitated, and rock is taken; the upper end of the hemispherical convex bulge 3 is higher than the upper end of the drilling tooth 21 so as to form a step difference; in the working process, the hemispherical bulges 3 can be matched with the upper ends of the drill teeth 21 to form alternating working relay, so that the effect of drilling and coring of the drill bit is improved, and the service life of the cutter head is prolonged.

The alloy gauge strips 4 which are embedded in the radial direction are embedded in the drill teeth 21, and the alloy gauge strips 4 are simultaneously connected to the base 25 in a penetrating way, so that the gauge of the drill bit is facilitated.

In summary, the multi-nozzle coring bit provided by the utility model has reasonable design and compact structure, the water flow is greatly increased by the arrangement of the multi-nozzle, the effect of cooling the bit by the water flow and flushing chips generated in the well coring operation process is improved, and meanwhile, the auxiliary nozzle 23 forms a cutting edge on the drilling tooth 21, so that better drilling is facilitated; the hemispherical bulges 3 are arranged, so that better rock taking is facilitated, the alternate relay of tooth grooves 24 is matched, the working effect of the drill bit is improved, and the practicability is high. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims

1. The multi-nozzle core drill bit comprises a main body (1) and a cutter head (2) connected to the main body (1), wherein a plurality of equidistant annular drilling teeth (21) are arranged on the cutter head (2), and water nozzles (22) are arranged between adjacent drilling teeth (21);

the method is characterized in that: the drilling teeth (21) are provided with auxiliary water gaps (23), and the upper ends of the auxiliary water gaps (23) extend to the surfaces of the drilling teeth and are used for forming cutting edges and increasing drilling pressure;

the upper end of the drilling tooth (21) is provided with a tooth groove (24), and a hemispherical bulge (3) is arranged in the tooth groove (24) and used for rapidly cutting.

2. The multiple nozzle coring bit of claim 1, wherein: the upper end of the hemispherical bulge (3) is higher than the upper end of the drilling tooth (21) so as to form a step difference.

3. The multiple nozzle coring bit of claim 1, wherein: the lower end integrated into one piece of tool bit (2) has base (25), and tool bit (2) are welded on main part (1) through base (25).

4. A multiple nozzle coring bit according to claim 3, wherein: the lower ends of the water gap (22) and the auxiliary water gap (23) extend to the main body (1) by bypassing the base (25).

5. The multiple nozzle coring bit of claim 1, wherein: the diamond teeth (21) are embedded with alloy gauge strips (4) which are embedded in the radial direction, and the alloy gauge strips (4) are simultaneously connected to the base (25) in a penetrating way.

6. The multiple nozzle coring bit of claim 1, wherein: the tool bit (2) is made of hard alloy materials.