Valve drilling device stable in connection

The utility model discloses a valve drilling device stable in connection. The device comprises a workbench, a sleeve, a clamping device and a hollow plate, the bottom of the workbench is fixedly connected with a base. A motor is arranged at the top of the workbench; a motor is arranged on the workbench, a base is arranged on the right side of the motor, a clamping pipe is connected to the right side of the base in an inlaid mode, a drill bit is inlaid in the right side of the clamping pipe, a sleeve is connected to the outer portion of the clamping pipe in a sleeving mode, a clamping device isarranged on the top of the workbench, and a hollow plate is fixedly connected to the outer portion of the workbench. The utility model discloses a valve drilling device stable in connection. The casing pipe is additionally arranged outside the clamping pipe on the right side of the motor, while the clamping pipe clamps a drill bit, the casing pipe is used for fixing the clamping pipe for the second time, and therefore th