CN202731756U

CN202731756U - Diamond compact concave drill bit of

Info

Publication number: CN202731756U
Application number: CN 201220037722
Authority: CN
Inventors: 杨岗
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-02-06
Filing date: 2012-02-06
Publication date: 2013-02-13
Anticipated expiration: 2022-02-06

Abstract

The utility model discloses a diamond compact concave drill bit. The diamond compact concave drill bit comprises a drill bit body and drill bit connecting threads, wherein a rock breaking pillar, diamond compacts for braze welding and gauge protection strips, three blades are evenly arranged on the end portion of the drill bit body, and each blade is provided with a cooling hole. Through the structure of the diamond compact concave drill bit, the diamond compact concave drill bit can drill in a hard rock stratum, and is good in abrasion resistance, strong in torsion resistance, and fast in rock breaking speed. Due to the fact that heat can be discharged out timely through the cooling holes, the diamond compact concave drill bit is good in cooling and chip removing, not obvious in hole shrinkage phenomenon, and high in construction efficiency.

Description

A kind of diamond compact indent drill bit

Technical field

The utility model belongs to rock crushing tool, is mainly used in the gas discharge in mine hole, visits water hole, injected hole and geological prospecting hole, is specifically related to a kind of diamond compact indent drill bit.

Background technology

At present, existing drill bit is when adopting the cooling of air-cooled or little water hole creeping into, and tends to occur external diameter diamond compact and comes off.Facts have proved this be since Cooling Holes from outside diamond compact too away from, cool off untimelyly, the heat that to be outside diamond produce when cutting the rock stratum can't be drained, temperature is increased rapidly and is caused the burning of bits until fall sheet, thereby affects single the bit bore degree of depth.

The utility model content

This is practical to aim to provide a kind of good cooling results, row's powder efficient is high, the undergauge phenomenon is not obvious, application life is long Novel polycrystalline diamond compact indent drill bit.

It is as follows that the utility model solves the problems of the technologies described above the technical scheme of taking:

A kind of diamond compact indent drill bit comprises drill body, drill bit connecting thread, wherein, be inlaid with brokenly rock pillar on the drill body, soldering has diamond compact and gauge bar, and be arranged with three wings in the end of drill body etc., wherein, be respectively equipped with Cooling Holes at wing.

The utility model has been taked after the such scheme, and it can pierce the medium ground, and abrasion resistance is good, resistance to torsion is strong, broken rock speed, and, because described Cooling Holes can in time be drained heat, therefore, its cooling chip removal is good, and the undergauge phenomenon is not obvious, and efficiency of construction is high.

Description of drawings

Below in conjunction with accompanying drawing the utility model is described in detail, so that above-mentioned advantage of the present utility model is clearer and more definite.

Fig. 1 is the structural representation of the utility model diamond compact indent drill bit;

Fig. 2 is the front schematic view of the utility model diamond compact indent drill bit;

Fig. 3 is the schematic diagram of the utility model diamond compact.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the present invention is described in detail.

Wherein, Fig. 1 is the structural representation of the utility model diamond compact indent drill bit; Fig. 2 is the front schematic view of the utility model diamond compact indent drill bit; Fig. 3 is the schematic diagram of the utility model diamond compact.

Such as Fig. 1～shown in Figure 3, described diamond compact indent drill bit, comprise drill body, drill bit connecting thread 5, wherein, be inlaid with brokenly rock pillar 2 on the drill body, soldering has diamond compact 1 and gauge bar 4, and, be arranged with in the end of drill body etc. three wings and, be provided with respectively weep hole 3 on the wing, to guarantee to bore wing cooling and the in time chip removal in the rock process; And the application also is respectively equipped with Cooling Holes 6 at three wings.

Wherein, the principle of above-mentioned Cooling Holes is as follows:

1) in time drain the heat that the outer ring diamond compact produces when the cutting rock stratum:

2) wind and water have certain souring to the rock stratum under certain pressure.

It should be noted that; above-mentioned specific embodiment only is exemplary; under above-mentioned instruction of the present utility model, those skilled in the art can carry out various improvement and distortion on the basis of above-described embodiment, and these improvement or distortion drop in the protection domain of the present utility model.

It will be understood by those skilled in the art that top specific descriptions just in order to explain the purpose of this utility model, is not for restriction the utility model.Protection domain of the present utility model is limited by claim and equivalent thereof.

Claims

1. diamond compact indent drill bit, comprise drill body, drill bit connecting thread, wherein, be inlaid with brokenly rock pillar on the drill body, soldering has diamond compact and gauge bar, and be arranged with three wings in the end of drill body etc., it is characterized in that, be respectively equipped with Cooling Holes at wing.