CN208518616U - A kind of drill bit for underground construction drilling - Google Patents

Abstract

The utility model discloses a kind of drill bit for underground construction drilling, including drill body, the drill body is connect by reducer pipe with drilling rod, wherein drill bit apopore anti-block apparatus is equipped in reducer pipe；Anti-block apparatus includes the steel ball being placed in reducer pipe, and the side of steel ball and the one end for the spring being placed in drill bit are affixed, and the other end and the washer at drill bit apopore aperture of spring are affixed；Using the technical solution of the utility model, underground boring construction open static pressure water drilling into when, static pressure water flow enters reducer pipe, extruding steel ball by drilling rod, and then pressuring spring deformation, water flow enter drill bit wash boring from steel ball and variable diameter inside pipe wall gap；After shutting down static pressure water, the pressure that steel ball is subject to disappears, and spring restores initial length, steel ball is returned to home position and blocks flow inlet, it overcomes the prior art and shuts down static pressure water, the defect of drilling accident caused by rock powder blocking drilling rod, ensure that the safety of underground boring construction in hole.

Description

A kind of drill bit for underground construction drilling

Technical field

The utility model belongs to coal mining field, and more specifically, the utility model relates to one kind to be used for underground construction The drill bit of drilling.

Background technique

In coal mining, underground boring construction is excessive due to once creeping into size, and rock powder deposition is big in hole, and static pressure water stops After falling, rock powder instantaneously passes through drill bit apopore and enters drilling rod in hole, blocks apopore, causes without returning water in the hole in, blocking drilling rod and Caused drilling accident can also be such that the project amount of drilling construction and tubing scraps when serious, and machinery can also be damaged by, which dealing with improperly, sets It is standby, or even cause safety accident.

Utility model content

Boring for underground construction for water outlet hole plug is avoided the technical problem to be solved by the utility model is to provide a kind of The drill bit in hole.

To achieve the goals above, the technical solution that the utility model is taken are as follows: provided a kind of for underground construction The drill bit of drilling, including drill body, the drill body are connect by reducer pipe with drilling rod, wherein are equipped in reducer pipe Drill bit apopore anti-block apparatus.

A kind of drill bit for underground construction drilling disclosed by the utility model, anti-block apparatus includes being placed in reducer pipe Steel ball, the side of steel ball and the one end for the spring being placed in drill bit are affixed, at the other end of spring and drill bit apopore aperture Washer is affixed.

The aperture of a kind of drill bit for underground construction drilling disclosed by the utility model, washer and drill bit apopore is suitable It answers, is covered at drill bit apopore.

A kind of drill bit for underground construction drilling disclosed by the utility model, spring one end and washer inner sidewall are affixed, The other end is affixed with steel ball side wall after drill bit water outlet axially bored line extension.

Using the technical solution of the utility model, underground boring construction open static pressure water drilling into when, static pressure water flow passes through brill Bar enters reducer pipe, squeezes steel ball, and then pressuring spring deformation, and water flow enters drill bit from steel ball and variable diameter inside pipe wall gap and rinses Drilling；After shutting down static pressure water, the pressure that steel ball is subject to disappears, and spring restores initial length, and steel ball is returned to home position and blocks Flow inlet overcomes the prior art and shuts down static pressure water, and rock powder instantaneously passes through drill bit apopore and enters drilling rod in hole, causes in hole Without water is returned, the defect of drilling accident caused by drilling rod is blocked, ensure that the safety of underground boring construction；Anti-block apparatus is set It sets, not only reduced drilling tool loss but also has saved the working hour of processing drilling, improve production efficiency；The setting of this structure, only exists Increase a reducer pipe between drilling rod and drill bit, the cost for avoiding equipment improvement investment is excessively increased.

Below with reference to drawings and examples, the utility model is described in detail.

Detailed description of the invention

Content expressed by each width attached drawing of this specification and the label in figure are briefly described below:

Fig. 1 is a kind of schematic diagram of the drill bit for underground construction drilling of the utility model.

In the figure, it is marked as 1, reducer pipe；2, steel ball；3, spring；4, washer.

Specific embodiment

Below against attached drawing, by the description of the embodiment, such as related to specific embodiment of the present utility model The shape of each component, construction, the mutual alignment between each section and connection relationship, the effect of each section and working principle, manufacture Technique and operate with method etc., are described in further detail, to help those skilled in the art to the utility model Utility model design, technical solution have more complete, accurate and deep understanding.

Fig. 1 is a kind of schematic diagram of the drill bit for underground construction drilling of the utility model；Sheet as shown in the figure is practical new A kind of drill bit for underground construction drilling of type, including drill body, drill body are connect by reducer pipe 1 with drilling rod, wherein Drill bit apopore anti-block apparatus is equipped in reducer pipe 1；Anti-block apparatus includes the steel ball 2 being placed in reducer pipe 1, the side of steel ball 2 Affixed with the one end for the spring 3 being placed in drill bit, the other end and the washer 4 at drill bit apopore aperture of spring 3 are affixed；Washer 4 adapt to the aperture of drill bit apopore, are covered at drill bit apopore；3 one end of spring and 4 inner sidewall of washer are affixed, the other end It is affixed with 3 side wall of steel ball after drill bit water outlet axially bored line extension.

Using the technical solution of the utility model, underground boring construction open static pressure water drilling into when, static pressure water flow passes through brill Bar enters reducer pipe 1, squeezes steel ball 2, and then 3 deformation of pressuring spring, water flow enter brill from steel ball 3 and 1 inner wall gap of reducer pipe Head wash boring；After shutting down static pressure water, the pressure that steel ball 2 is subject to disappears, and spring 3 restores initial length, and steel ball 2 is returned to original Flow inlet is blocked in position, overcomes the prior art and shuts down static pressure water, and rock powder instantaneously passes through drill bit apopore and enters drilling rod in hole, Cause to block the defect of drilling accident caused by drilling rod without water is returned in hole, ensure that the safety of underground boring construction；Anti-blocking dress The setting set not only had reduced drilling tool loss but also had saved the working hour of processing drilling, and improved production efficiency；The setting of this structure, only It is only one reducer pipe of increase between drilling rod and drill bit, the cost for avoiding equipment improvement investment is excessively increased.

The utility model is exemplarily described above in conjunction with attached drawing, it is clear that the utility model specific implementation not by The limitation of aforesaid way, as long as the various unsubstantialities carried out using the method concept and technical solution of the utility model change Into, or it is not improved the conception and technical scheme of the utility model are directly applied into other occasions, in the utility model Protection scope within.

Claims (3)

1. a kind of drill bit for underground construction drilling, including drill body, it is characterised in that: the drill body passes through change Diameter pipe is connect with drilling rod, wherein drill bit apopore anti-block apparatus is equipped in reducer pipe；The anti-block apparatus includes being placed in variable diameter Steel ball in pipe, the side of steel ball and the one end for the spring being placed in drill bit are affixed, the other end of spring and drill bit apopore hole Washer at mouthful is affixed.

2. a kind of drill bit for underground construction drilling described in accordance with the claim 1, it is characterised in that: the washer and brill The aperture of head apopore adapts to, and is covered at drill bit apopore.

3. a kind of drill bit for underground construction drilling described in accordance with the claim 1, it is characterised in that: the spring one end Affixed with washer inner sidewall, the other end is affixed with steel ball side wall after drill bit water outlet axially bored line extension.