CN211500541U - Drill bit for reverse circulation drilling of sandy soil stratum - Google Patents
Drill bit for reverse circulation drilling of sandy soil stratum Download PDFInfo
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- CN211500541U CN211500541U CN202020051202.XU CN202020051202U CN211500541U CN 211500541 U CN211500541 U CN 211500541U CN 202020051202 U CN202020051202 U CN 202020051202U CN 211500541 U CN211500541 U CN 211500541U
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Abstract
The utility model provides a drill bit for sand stratum reverse circulation creeps into, includes both ends open-ended hollow drilling rod, and the drilling rod union is installed to drilling rod one end, and the drilling rod other end passes through the filter screen and seals, and the drilling rod middle part surface is located through the fixed cover of baffle coupling assembling to the open direction bucket of lower extreme, and a plurality of diamond bit pieces have evenly been laid along the outer edge of the lower extreme staving of direction bucket. The utility model provides a drill bit for sand stratum reverse circulation creeps into can solve the problem of blockking up the pump line and damaging the blade when meeting lump stone and boulder can't creep into, ensures the quality of pore-forming (stake), has shortened the engineering time, has reduced operation personnel's intensity of labour, improves the work efficiency.
Description
Technical Field
The utility model belongs to the technical field of ground and basic processing technique and specifically relates to a drill bit that is used for sand stratum reverse circulation to creep into.
Background
The drilling process of the rotary reverse circulation drilling machine for pile forming is that the reverse circulation drilling machine is used to cut the soil body by a regular drill bit with three or four edges under the condition of mud wall protection, and then a pile hole is formed. The regular drill bit with the three or four edges can be applied to the stratum such as plain filling soil, silt, silty clay and sand layer. However, when the geology is changed specially and meets the bottom layers of pebbles, rock blocks, boulders, miscellaneous fill and the like, the working efficiency of the three-edge or four-edge conventional drill bit is greatly reduced, the rock blocks are difficult to break, and the drill bit and the blades are very seriously abraded. Thereby causing the problems of pipe blockage, increased times of drill lifting, inspection and repair, lengthened pile-forming time, increased input resources and the like.
Disclosure of Invention
The utility model aims to solve the technical problem that a drill bit for sand stratum reverse circulation creeps into is provided, can solve the problem of blockking up the pump line and damaging the blade when meeting lump stone and boulder and can't creep into, ensures the quality of pore-forming (stake), has shortened the engineering time, has reduced operation personnel's intensity of labour, improves the work efficiency.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the utility model provides a drill bit for sand stratum reverse circulation creeps into, includes both ends open-ended hollow drilling rod, and the drilling rod union is installed to drilling rod one end, and the drilling rod other end passes through the filter screen and seals, and the drilling rod middle part surface is located through the fixed cover of baffle coupling assembling to the open direction bucket of lower extreme, and a plurality of diamond bit pieces have evenly been laid along the outer edge of the lower extreme staving of direction bucket.
A plurality of diamond drill blocks are uniformly distributed on the outer edge of the bottom of the partition plate connecting assembly.
The baffle coupling assembling includes four trapezoidal check boards along circumference evenly distributed, and two trapezoidal check boards that are 180 degrees distributions in four trapezoidal check boards pass through the fishplate and connect and form a whole, and four trapezoidal check boards and fishplate bottom are followed evenly to be laid a plurality of diamond bit pieces outward.
The fishplate is formed by connecting a square plate body at the upper part and an inverted triangular plate body at the lower part, and a plurality of diamond drill blocks are uniformly distributed on two side edges of the inverted triangular plate body.
The utility model provides a drill bit for sand stratum reverse circulation drilling, loose joint is connected on the drilling rod upper portion, the filter screen is arranged on the drilling rod lower portion, a plurality of diamond drill bit blocks are arranged on the outer edge of the bottom of the connecting component through the guide barrel and the partition plate, and the diamond drill bit blocks are used as wear-resistant materials; due to the design of the fishplate, the drilling speed and the capability of crushing the rock blocks are improved, the abrasion of the diamond drill bit block to the drill bit in the process of crushing the rock blocks is reduced, the filter screen blocks the rock blocks with large particle sizes which are not completely crushed, the rock blocks can be sucked into the guide pipe after being fully crushed, and the problem of pipe blockage is effectively prevented; the drilling capacity of the rotary reverse circulation drilling machine in strata such as rock blocks, boulders and the like is effectively improved, the problem that the drill bit is frequently lifted for checking and repairing due to drill bit abrasion is solved, the construction progress is accelerated, the efficiency is improved, and the cost investment is reduced.
Drawings
The invention will be further explained with reference to the following figures and examples:
fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
As shown in figure 1, a drill bit for sand stratum reverse circulation creeps into, including both ends open-ended hollow drilling rod 1, drilling rod union 2 is installed to drilling rod 1 one end, and the drilling rod 1 other end passes through filter screen 5 and seals, and the open direction bucket 3 of lower extreme is located drilling rod 1 middle part surface through baffle coupling assembling fixed cover, and the lower extreme staving of direction bucket 3 is outer along evenly having laid a plurality of diamond bit pieces 4.
A plurality of diamond drill blocks 4 are uniformly distributed on the outer edge of the bottom of the partition board connecting component.
The baffle coupling assembling includes four trapezoidal check boards 6 along circumference evenly distributed, and two trapezoidal check boards 6 that are 180 degrees distributions in four trapezoidal check boards 6 connect through fishplate 7 and form a whole, and four trapezoidal check boards 6 and 7 bottoms of fishplate are followed evenly to be laid a plurality of diamond bit pieces 4 outward.
The fishplate 7 is formed by connecting a square plate body at the upper part with an inverted triangular plate body at the lower part, and a plurality of diamond drill blocks 4 are uniformly distributed on two side edges of the inverted triangular plate body.
The working process of the utility model is as follows:
1. selecting a proper drill rod 1 and a proper drill rod movable joint 2 according to the specification of a drilling drill rod, and selecting a guide barrel 3 with a proper size according to the diameter of a formed hole;
2. connecting the drill rod 1 and the guide barrel 3 by adopting a partition plate connecting assembly;
3. the outer edge of the lower end of the guide barrel 3 and the outer edge of the bottom of the partition plate connecting assembly are respectively embedded with a plurality of diamond drill blocks 4;
4. the drill rod movable joint 2 is connected with a drill rod of a drilling machine, and drilling construction is carried out according to the rotary reverse circulation drilling machine construction process until a pile is formed.
The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (4)
1. The utility model provides a drill bit that is used for sand stratum reverse circulation to creep into, includes both ends open-ended hollow drilling rod (1), and drilling rod union (2), its characterized in that are installed to drilling rod (1) one end: the other end of the drill rod (1) is sealed through a filter screen (5), the lower end of the opened guide barrel (3) is fixedly sleeved on the outer surface of the middle part of the drill rod (1) through a partition plate connecting assembly, and a plurality of diamond drill bit blocks (4) are uniformly distributed on the outer edge of the lower end barrel body of the guide barrel (3).
2. The drill bit for reverse circulation drilling of a sandy formation as defined in claim 1, wherein: a plurality of diamond drill blocks (4) are uniformly distributed on the outer edge of the bottom of the clapboard connecting component.
3. The drill bit for reverse circulation drilling of a sandy formation as defined in claim 2, wherein: the partition plate connecting assembly comprises four trapezoidal grid plates (6) which are uniformly distributed along the circumference, two trapezoidal grid plates (6) which are distributed at 180 degrees in the four trapezoidal grid plates (6) are connected through a fishplate (7) to form a whole, and a plurality of diamond drill bits (4) are uniformly distributed on the outer edges of the bottoms of the four trapezoidal grid plates (6) and the fishplate (7).
4. The drill bit for reverse circulation drilling of a sandy formation as defined in claim 3, wherein: the fishplate (7) is formed by connecting a square plate body at the upper part with an inverted triangular plate body at the lower part, and a plurality of diamond drill blocks (4) are uniformly distributed on two side edges of the inverted triangular plate body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020051202.XU CN211500541U (en) | 2020-01-10 | 2020-01-10 | Drill bit for reverse circulation drilling of sandy soil stratum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020051202.XU CN211500541U (en) | 2020-01-10 | 2020-01-10 | Drill bit for reverse circulation drilling of sandy soil stratum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211500541U true CN211500541U (en) | 2020-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020051202.XU Active CN211500541U (en) | 2020-01-10 | 2020-01-10 | Drill bit for reverse circulation drilling of sandy soil stratum |
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| CN (1) | CN211500541U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112392405A (en) * | 2020-12-28 | 2021-02-23 | 西南石油大学 | Special drill bit of reverse circulation well drilling |
-
2020
- 2020-01-10 CN CN202020051202.XU patent/CN211500541U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112392405A (en) * | 2020-12-28 | 2021-02-23 | 西南石油大学 | Special drill bit of reverse circulation well drilling |
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