Radial sidetrack drilling rotating self-propelled porous jet flow drill bit
A multi-hole jet, self-propelled technology, used in construction and other directions, can solve the problems of large length and diameter of the device, encounter resistance, easy to encounter jams, etc., to shorten the length and diameter, the drilling trajectory is straight, and the reaming ability can be enhanced. Effect
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[0024] In conjunction with the accompanying drawings, a radial sidetracking rotary self-propelled multi-hole jet drill bit includes a shell 1 and a rotary drill body 2. The shell 1 is a cylindrical structure, and a water inlet 3 is provided at the end of the shell 1. The center of the body 1 is provided with a through shaft hole along its axial direction. The rotary drill body 2 includes a rod-shaped body 201 and a hemispherical body 202. The hemispherical body 202 is fixed on one end of the rod-shaped body 201. The two are integrally connected. The rod-shaped body 201 is inserted into the shaft hole. A water flow channel 4 is arranged in the center of the rotary drill body 2 along its axial direction, and one end of the water flow channel 4 communicates with the water inlet 3 . Semicircular grooves are provided on the circumference of the outer wall of the rod-shaped body 201 and the inner wall of the housing 1 and corresponding to the same cross-sectional position, and posit...
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