CN212837793U

CN212837793U - Siphon drill bit for sampling deep hole at fixed point

Info

Publication number: CN212837793U
Application number: CN202021835012.3U
Authority: CN
Inventors: 史君梅; 郜联国; 张向辉
Original assignee: Zhengzhou Aidi Technology Co ltd
Current assignee: Zhengzhou Aidi Technology Co ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-03-30
Anticipated expiration: 2030-08-27

Abstract

The utility model discloses a siphon drill bit for deep hole fixed point sampling, the drill bit comprises a drill bit main body with a cavity inside, a sampling port communicated with the cavity is arranged on the drilling end of the drill bit main body, three bulges are convexly arranged on the inner wall of the sampling port towards the circle center of the drill bit main body, two of the bulges are arc-shaped, the upper end surfaces of the two bulges are respectively provided with a knife rest two, a knife head I is arranged on the knife rest two along the rotating direction of the drill bit, the siphon drill bit for deep hole fixed point sampling is convenient for the rapid entering of coal samples through the circular sampling port, the uniform cutting of the coal samples entering the sampling port is convenient through the bulges arranged on the sampling port, the first knife head and the fourth knife head arranged on the bulges, the uniform coal sample particles entering the sampling port are ensured, the cavity of the drill bit main body is prevented from being blocked, and the injection holes communicated with the cavity through the peripheral surface of the drill bit, make the quick accurate sample of coal impress in the sample connection, the practicality is stronger.

Description

Siphon drill bit for sampling deep hole at fixed point

Technical Field

The utility model relates to a deep hole drill bit technical field specifically is siphon drill bit is used in sample of deep hole fixed point.

Background

The coal bed gas content is a basic parameter for gas extraction design, ventilation design and coal bed gas resource reserve evaluation of a mine. In the coal mine gas prevention and control process, the coal bed gas content is accurately and reliably measured, which is an important basis for predicting the outburst risk of a mine and testing the effect of regional measures, and is also a reliable basis for realizing safe excavation on a mining working face. Before and after regional measures are taken, fixed-point sampling and accurate gas content measurement are often needed, the sampling speed of the existing deep hole drill bit is slow, and the drill bit is easy to wear.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide the deep hole fixed point siphon drill bit for the sample, sampling speed is fast, and the protection drill bit prolongs the life of drill bit, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: the siphon drill bit for sampling the fixed point of the deep hole comprises a cylindrical drill bit main body, wherein a cavity is arranged in the cylindrical drill bit main body, a sampling port communicated with the cavity is arranged at the drilling end of the drill bit main body, the outer edge profile of the sampling port is circular and concentric with the drill bit main body, three bulges are convexly arranged on the inner wall of the sampling port towards the circle center of the drill bit main body, two bulges are arc-shaped, a tool rest II is respectively arranged on the upper end surfaces of the two bulges, a tool bit I is arranged on the tool rest II along the rotating direction of the drill bit, the other bulge is right-angled, the central line of the right-angled right angle passes through the circle center of the sampling port, a tool rest III is arranged on the upper end surface of the right-angled bulge, a tool bit IV is obliquely arranged on the upper end surface of the tool rest III along the drilling direction of the drill bit, the drill bit main part is close to and bores the global of getting the end and outwards evenly protruding be equipped with a plurality of knife rest one, the outer peripheral face of knife rest one is equipped with the spread groove, be equipped with tool bit three in the spread groove, the drill bit main part is close to and bores the global jet orifice of evenly offering a plurality of and cavity intercommunication of getting the end, the central line of jet orifice intersects with the central line of drill bit, the downthehole bush that is equipped with the aperture and outwards reduces gradually along the drill bit cross section centre of a circle.

As an optimized technical scheme of the utility model, the lateral surface of tool bit three is higher than the lateral surface of knife rest one.

As a preferred technical scheme of the utility model, a plurality of jet orifice and a plurality of knife rest staggered arrangement.

As an optimal technical scheme of the utility model, the inner wall of drill bit main part evenly seted up along the brill direction of getting of drill bit with a plurality of fixed slots of drilling rod complex.

As an optimal technical scheme of the utility model, the direction extension is got along boring of drill bit to knife rest two, the top of knife rest two is provided with tool bit two along the direction of rotation slope.

As an optimized technical scheme of the utility model, the scope of the cutting orbit of tool bit one, tool bit two and tool bit four covers completely bore the surface scope of getting the end face.

Compared with the prior art, the beneficial effects of the utility model are that: the quick entering of the coal sample of being convenient for through the sample connection with the cavity intercommunication, be convenient for carry out the uniform cutting to the coal sample that is about to get into the sample connection through establishing the arch of sample connection and establishing tool bit one and tool bit four in the arch, it is even to guarantee to get into the coal sample granule of sample connection, avoid blockking up the cavity of drill bit main part, the jet orifice that feeds through with the cavity through drill bit main part global is convenient for cooperate the cavity and form the suction effect, make quick accurate impressing of coal sample in the sample connection, because the aperture of bush outwards dwindles along drill bit cross section centre of a circle gradually, and then improved the outside amount of wind and the wind speed of spraying of bush, and then added the suction effect, the extraction speed of coal sample has been improved, and the.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view in another direction of the present invention;

fig. 3 is a schematic view of the structure of the fixing groove of the present invention;

FIG. 4 is a schematic view of the partial cross-sectional structure of the present invention;

fig. 5 is a schematic view of the structure of the bushing according to the present invention.

In the figure: the drill bit comprises a drill bit main body 1, a lining 2, a first tool bit 3, a first tool rest 4, a second tool bit 5, a sampling port 6, a protrusion 7, an injection hole 8, a third tool bit 9, a connecting groove 10, a drilling end 11, a second tool rest 12, a fourth tool bit 13, a third tool rest 14 and a fixing groove 15.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: the siphon drill bit for sampling the fixed point of the deep hole comprises a cylindrical drill bit main body 1 with a cavity inside, a sampling port 6 communicated with the cavity is arranged on a drilling end 11 of the drill bit main body 1, the outline of the outer edge of the sampling port 6 is circular concentric with the drill bit main body 1, three bulges 7 are convexly arranged on the inner wall of the sampling port 6 towards the circle center of the drill bit main body 1, two bulges 7 are arc-shaped, a tool rest II 12 is respectively arranged on the upper end surfaces of the two bulges 7, a tool bit I3 is arranged on the tool rest II 12 along the rotating direction of the drill bit, the other bulge 7 is right-angled, the central line of the right-angled right angle passes through the circle center of the sampling port, a tool rest III 14 is arranged on the upper end surface of the right-angled bulge 7, tool rest IV 13 is obliquely arranged on the upper end surface of the tool rest III 14 along the drilling direction of the drill, the circumferential surface of a drill bit main body 1, which is close to a drilling end 11, is uniformly and convexly provided with a plurality of tool rests I4, the circumferential surface of the tool rests I4 is provided with a connecting groove 10, a tool bit III 9 is arranged in the connecting groove 10, a tool bit I3, a tool bit II 5 and a tool bit IV 13 can be fixed on the drill bit main body 1 through welding, the circumferential surface of the drill bit main body 1, which is close to the drilling end 11, is uniformly provided with a plurality of injection holes 8 communicated with a cavity, the central line of the injection holes 8 is intersected with the central line of a drill bit, a bushing 2 with the diameter gradually reduced outwards along the circle center of the cross section of the drill bit is sleeved in the injection holes 8, the inner wall of the bushing 2 can be of a horn-shaped structure or two sections of horn-shaped structures with different diameters, the air quantity of the injection holes is increased, the sampling speed is improved, the outer side surface of the tool bit III 9 is higher than the outer, the second tool rest 8 extends along the drilling direction of the drill, the second tool bit 5 is obliquely arranged at the top end of the second tool rest 8 along the rotating direction, and the range of the cutting tracks of the first tool bit 3, the second tool bit 5 and the fourth tool bit 13 completely covers the surface range of the end face of the drilling end 11.

When in use: this siphon drill bit for deep hole fixed point sample passes through spread groove 10 and drilling rod cooperation installation back, bore on the drill bit main part 1 and get end 11 and support the position department at needs drilling, when the drill bit rotates, establish tool bit two 5 on knife rest one 4 and drive the drill bit and creep into, the cavity of drill bit main part 1 is got into fast to the coal sample of being convenient for through circular shape sample connection 6, come to carry out abundant cutting to the coal sample of sample connection 6 department through tool bit one 3 and tool bit four 13, it is even to guarantee to enter into the coal sample granule of sample connection 6 department, guarantee that the coal sample that can not have great granule gets into sample connection 6, prevent the cavity jam of drill bit main part 1, it forms the suction effect to be convenient for to cooperate the cavity through jet orifice 8, thereby make the coal sample impress in sample connection 6 and reach fast, accurate sample purpose.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Deep hole fixed point is siphon drill bit for sample, its characterized in that: the drill bit comprises a cylindrical drill bit main body, wherein a cavity is formed in the cylindrical drill bit main body, a sampling port communicated with the cavity is formed in the drilling end of the drill bit main body, the outer edge profile of the sampling port is circular concentric with the drill bit main body, three bulges are convexly arranged on the inner wall of the sampling port towards the circle center of the drill bit main body, two of the bulges are arc-shaped, a knife rest II is respectively arranged on the upper end surface of each bulge, a tool bit I is arranged on the knife rest II along the rotating direction of the drill bit, the other bulge is right-angle-shaped, the right-angle-shaped central line passes through the circle center of the sampling port, a tool rest III is arranged on the upper end surface of each bulge, a tool bit IV is obliquely arranged on the upper end surface of the tool rest III along the drilling direction of the drill bit, the tool bit I and the tool bit IV are non-uniformly arranged, the cutting tracks of the tool bits are not overlapped, the outer peripheral face of the first tool rest is provided with a connecting groove, a third tool bit is arranged in the connecting groove, a plurality of jet holes communicated with the cavity are uniformly formed in the peripheral face, close to the drilling end, of the drill bit main body, the center line of each jet hole is intersected with the center line of the drill bit, and a bushing with the hole diameter gradually reduced outwards along the circle center of the cross section of the drill bit is sleeved in each jet hole.

2. The siphon drill for sampling deep holes at fixed points according to claim 1, characterized in that: the outer side surface of the tool bit III is higher than the outer side surface of the tool rest I.

3. The siphon drill for sampling deep holes at fixed points according to claim 1, characterized in that: a plurality of said injection holes and a plurality of said tool holders are arranged in a staggered manner.

4. The siphon drill for sampling deep holes at fixed points according to claim 1, characterized in that: a plurality of fixing grooves matched with the drill rod are uniformly formed in the inner wall of the drill bit main body along the drilling direction of the drill bit.

5. The siphon drill for sampling deep holes at fixed points according to claim 1, characterized in that: the second tool rest extends along the drilling direction of the drill bit, and a second tool bit is obliquely arranged at the top end of the second tool rest along the rotating direction.

6. The siphon drill for sampling deep holes at fixed points according to claim 1, characterized in that: the range of the cutting tracks of the first cutter head, the second cutter head and the fourth cutter head completely covers the surface range of the end face of the drilling end.