[Invention Announcement] A composite geological drill bit with anti-sand blocking features

Application Publication Number:CN112177531A
Application Publication Date:2021.01.05
Application Number:2020109160478
Application Date:2020.09.03
Applicant:Qidong County Fengsu Drilling Tools Co., Ltd.
Inventors:Zou Chao; Li Zhongyong; Chen Peng
Address:No. 101 Baihe Group, Baijia Village, Baihe Street Office, Qidong County, Hengyang City, Hunan Province 421600
Classification Number:E21B10/16(2006.01)I;

Abstract:
This invention provides a composite geological drill bit with anti-sand blocking features, related to drilling equipment technology. The drill bit includes a body with a fixed connector on its upper surface, which is rotatably connected to a wheel disc inside. Cutting bodies are fixedly connected on both sides of the wheel disc on the upper surface of the drill bit body, and the cutting bodies have first cutting teeth fixedly connected to their upper surfaces. The sides of the first cutting teeth internally rotate and are connected to auxiliary discs. The hemispheres, elastic baffles, and elastomers block the water inlet and outlet channels and the two water outlet holes, which can be opened after water supply, preventing mud ingress. The rock is broken by the action of second cutting teeth, second gear teeth, and third gear teeth with a central rotating body, enhancing breaking efficiency. Cooling is efficiently achieved by the two water outlet holes working in conjunction with the water outlet heads.