Diamond drill bit special for mine mining and working principle thereof

Abstract

The invention provides a diamond drill bit special for mine mining and a working principle thereof. The diamond drill bit comprises a diamond triangular side head, a main drill bit body, a diamond block breaking structure, a continuous flowing groove, chip discharge grooves, a top core drill bit structure, an inner screw thread connection drill bit sleeve and an adjustable extension rod structure;the diamond triangular side head is integrally arranged on the left surface of the main drill bit body, the diamond block breaking structure is connected to the right surface of the main drill bit through screws, the continuous flowing groove is vertically formed in the left portion of the front surface of the main drill bit, and the chip discharge grooves are formed in the right portion of the front surface of the main drill bit body and the right portion of the back surface of the main drill bit body respectively. According to the diamond drill bit special for mine mining and the working principle thereof, the chip discharge grooves are formed to rectangular through grooves with the width of 3 to 5 centimeters, the chip discharge amount can be increased, and the problem of difficult chip discharge is avoided; the lower end of an overflowing pipe directly faces and is matched with the upper end of the continuous flowing groove, a funnel-shaped stainless steel pipe is adopted for theoverflowing pipe, the effect of quick cooling can be achieved, and meanwhile the unobstructed degree of chip discharge can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of mining, and in particular relates to a special diamond drill bit for mining and its working principle. Background technique [0002] The rock-breaking effect of diamond bits is accomplished by diamond particles. To know the rock-breaking effect of the drill bit, it is necessary to understand the rock-breaking effect of single-grain diamond. In hard formations, the single-grain diamond puts the rock in a state of extremely high stress (about 4200-5700MPa, some data believe that it can reach 6300MPa) under the action of drilling pressure, causing the rock to undergo a lithological transition from brittleness to plasticity. The single-grain diamond eats into the formation, and under the action of torque, it cuts and breaks the rock. The cutting depth is basically equal to the depth of the diamond grain. This process is like "plowing the ground", so it is called the plow cutting action of the diamond drill ...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the above-mentioned technical problems, the present invention provides a special diamond drill bit for mining and its working principle to solve the problem that the existing diamond drill bit is inconvenient to adjust the length of the drill bit, and it is easy to cause difficulty in chip removal and inconvenient replacement and maintenance during mining. The problem

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