A multiple slot coring bit

Abstract

The utility model discloses a kind of multi-slot coring bits, belong to coring bit technical field, including drill pipe, the bottom end of the drill pipe is provided with sleeve pipe, the outside of the sleeve pipe is sleeved with drill bit body, the side of the drill bit body is provided with multiple cutting edges, arc-shaped overflow passage is arranged between every two adjacent cutting edges, the outside of the cutting edge is fixedly connected with side cutting tooth, the bottom surface of the drill bit body is fixedly connected with multiple lower cutting teeth, the inside of the cutting edge is provided with lower sleeve groove, the sleeve pipe movably sleeve joint to the inner chamber of lower sleeve groove.In the utility model, when drill pipe drives drill bit body to rotate and drills and takes core to stratum, cutting edge, side cutting tooth and lower cutting tooth are used to drill stratum, rock material produced by drilling moves upward along arc-shaped overflow passage, and water discharged by cooperating inner water eye and outer water eye, ensure that rock material can be smoothly moved from the side of drill pipe, and it is good in practicality.

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