A hybrid pdc drill bit for cutting and breaking rock

Abstract

The invention discloses a rock-cutting and rock-breaking hybrid PDC drill bit, which belongs to the technical field of rock mining equipment and includes a mounting joint, a power assembly, a transmission assembly, a cutting assembly, and a dust discharge assembly. The first end of the mounting joint is fixedly mounted on the power assembly. The second end of the installation joint is provided with an internal thread for installing and fixing the cutting rock-breaking hybrid PDC drill bit. The dust outlet assembly is fixedly installed on the power assembly. At the same time, the dust outlet assembly is fixedly connected with the round table. The first end of the component is fixedly connected with the power component, the second end of the transmission component is fixedly installed with the cutting component, the dust output component communicates with the transmission component through the round table, and the power component is used to provide power for the transmission component, the cutting component, and the dust output component. The mud generated during drilling enters the inside of the transmission assembly through the cutting assembly, and the dust outlet assembly discharges the mud in the transmission assembly out of the drill bit. The present invention has the characteristics of ingenious structure, diverse functions and high degree of integration.

Description

technical field [0001] The invention relates to the technical field of rock mining equipment, in particular to a rock-cutting and rock-breaking hybrid PDC drill bit. Background technique [0002] Drilling technology is involved in many industries such as geology and mineral resources, urban infrastructure, energy, transportation, etc. During the drilling process, the drill bit is the main tool for breaking rocks. The traditional PDC drill bit is drilled by cutting, and the underground rocks are clearly stratified. After encountering a relatively hard rock layer, the drilling ability of the drill bit is poor, and the drill bit is greatly worn. The prior art CN202021265943.4 discloses an impact-resistant PDC drill bit, including a drill bit cylinder, the top of which is fixed Connected with an outer blade, the side of the outer blade far away from the drill bit cylinder is fixedly connected with an outer cutting tooth, the middle part of the top of the drill bit cylinder is fi...

AI Technical Summary

Problems solved by technology

[0002] Drilling technology is involved in many industries such as geology and mineral resources, urban infrastructure, energy, transportation, etc. During the drilling process, the drill bit is the main tool for breaking rocks. The traditional PDC drill bit is drilled by cutting, and the underground rocks are clearly stratified. After encountering a relatively hard rock layer, the drilling ability of the drill bit is poor, and the drill bit is greatly worn. The prior art CN202021265943.4 discloses an impact-resistant PDC drill bit, including a drill bit cylinder, the top of which is fixed Connected with an outer blade, the side of the outer blade far away from the drill bit cylinder is fixedly connected with an outer cutting tooth, the middle part of the top of the drill bit cylinder is fixedly connected with an inner blade, and the top of the inner blade is fixedly connected with a Inner cutting teeth, the bottom of the drill bit cylinder is fixedly connected with a connecting piece, and the bottom of the connecting piece is fixedly connected with a mounting piece. By setting the outer knife wing as a bent shape, the distance between the outer knife wing and the drill bit cylinder can be increased. The contact area between the inner blades can reduce the cutting resistance of the outer blades, and the mounting parts can facilitate the installation and disassembly of the drill bit, but the drill bit cannot impact and break other rock layers, so it is not very good. The cutting quality and drilling speed cannot be guaranteed, and the drilling cost cannot be reduced. At the same time, the function of breaking rock and soil cleaning during the drilling process cannot be realized, which brings inconvenience to use. Therefore, the present invention proposes a cutting and rock-breaking hybrid PDC drill bit. The rock is broken while cutting, which ensures the quality of mining. At the same time, the broken rock and soil can be cleaned, which is convenient to use.

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