While-drilling circulating leaking stoppage structure

Abstract

The utility model relates to the technical field of leakage stoppage while drilling, in particular to a circulation leakage stoppage while drilling structure which comprises a body while drilling, a clamping groove is formed in the body while drilling and used for installing an inner cylinder in a clamping mode, a connecting plate is arranged at the top end of the inner cylinder and is of a cross structure, and the connecting plate is connected with the clamping groove. The top end of the connecting plate is fixedly connected with the bottom end of a rotating rod, the top end of the rotating rod is fixedly connected with the output end of a motor, the motor is fixedly installed in the protective shell, and a valve is arranged at the bottom of the inner cylinder. The inner cylinder capable of rotating is arranged in the while-drilling body, a first hole formed in the inner wall of the while-drilling body is aligned with a second hole formed in the inner wall of the inner cylinder, so that a leaking stoppage solvent can be conveniently discharged, the first hole and the second hole are conveniently aligned or staggered through the arrangement of a first limiting block and a second limiting block, and the leakage stoppage effect is improved. And therefore, circulating plugging work can be carried out at any time.

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