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Half-funnel-type nozzle double-layer water channel diamond-impregnated bit

A diamond-impregnated, funnel-type technology, used in drill bits, drilling equipment, earth-moving drilling, etc., can solve the problems of high labor intensity, short service life, and increase the force of the drill bit, so as to reduce the labor intensity of workers and reduce labor costs. The effect of drilling times and improving work efficiency

Inactive Publication Date: 2013-10-16
长沙锐合钻石工具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing rope core drill bit is generally a single-stage water tank, and the nozzle adopts a rectangular nozzle or a trapezoidal nozzle. The nozzle is formed by machining, which has low efficiency and high labor intensity; the existing nozzle has a thick bottom lip surface, and the cooling liquid is often not better. Cooling can not achieve better results, and the chip removal effect is not good, which increases the repeated crushing of the drill bit, increases the force of the drill bit, etc., and affects the service life of the diamond drill bit; in addition, the height of the working layer is generally 7 -10mm, when the cumulative drilling depth of the drill bit reaches 40-60m, the drill bit will be scrapped and the service life is short
The existing single-stage water tank is not suitable for ultra-high working layers, otherwise the coolant will not be able to reach the bottom lip of the drill bit working layer
Most of the existing drill bits use alloys and polycrystals to protect the non-working layer. In this way, the loss of the inner and outer diameters of the working layer is often accelerated, the wear is serious, and the service life is short.
And when drilling, most of them use deep hole drilling, and it takes a long time to lift the drill once, sometimes even 1-2 shifts (more than 8-10 hours), the work efficiency is low, and the labor intensity is high

Method used

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Effect test

Embodiment 1

[0020] refer to figure 1 , this embodiment includes a working layer 1 with six wings and a steel body 2, and also includes a stepped water tank and a half-funnel nozzle 3. Below the funnel-shaped nozzle 3, the stepped water tank is located on the inner surface and the outer surface of the working layer 1.

[0021] refer to figure 2 , the inclined surface of the semi-funnel nozzle 3 is set at an angle of 150 degrees to the vertical direction, so as to reduce the cooling water resistance, improve the cooling effect, improve the stress situation, increase the strength of the working layer, and prolong the service life of the drill bit.

[0022] Using the half-funnel nozzle, the coolant can better cool the bottom lip surface of the working layer, and the upper part of the half-funnel nozzle is used as the first layer nozzle to cool the bottom lip surface of the working layer; when the working layer of the drill bit is worn To a certain extent, the lower part of the semi-funnel-...

Embodiment 2

[0029] The difference between this embodiment and Embodiment 1 is that the stepped water tank is a three-stage water tank, and the inclined surface of the half-funnel-shaped nozzle 3 is set at an angle of 130 degrees to the vertical direction. All the other are with embodiment 1.

Embodiment 3

[0031] The difference between this embodiment and Embodiment 1 is that: the inclined surface of the half-funnel nozzle 3 is set at an angle of 160 degrees to the vertical direction. All the other are with embodiment 1.

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Abstract

A half-funnel-type nozzle double-layer water channel diamond-impregnated bit comprises a steel body and a working layer with at least two wings, and further comprises stepped water channels and half-funnel-type nozzles. The half-funnel-type nozzles are formed on bottom lip surfaces of the working layer, and the stepped water channels are arranged below the half-funnel-type nozzles and located in the inner surface and the outer surface of the working layer. The diamond-impregnated bit can reach a total drilling depth of 80-100m. Compared with an existing bit with the drilling depth of 40-60m, the diamond-impregnated bit is long in service life, can beneficially reduce drill raising frequency, reduces labor intensity of workers, and improves work efficiency.

Description

technical field [0001] The invention relates to a semi-funnel-shaped double-layer water tank impregnated with diamond drill bit. Background technique [0002] Geological exploration drilling can be divided into single pipe drilling, double pipe drilling and wireline core drilling. Wireline core drilling is a method of core drilling without lifting. Its advantages are simple drill bit structure, high drilling efficiency, high core recovery rate, low labor intensity, and low drilling cost. At present, the existing rope core drill bit is generally a single-stage water tank, and the nozzle adopts a rectangular nozzle or a trapezoidal nozzle. The nozzle is formed by machining, which has low efficiency and high labor intensity; the existing nozzle has a thick bottom lip surface, and the cooling liquid is often not better. Cooling can not achieve better results, and the chip removal effect is not good, which increases the repeated crushing of the drill bit, increases the force of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/46
Inventor 谭忠诚曾波肖博芳
Owner 长沙锐合钻石工具有限公司
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