Valve conical surface positioning device

The utility model discloses a valve conical surface positioning device which comprises a base, an adjusting and positioning mechanism is installed at one end of the base, a valve seat clamping mechanism is installed on the adjusting and positioning mechanism, a valve rod clamping mechanism is installed at the other end of the base, the adjusting and positioning mechanism comprises a positioning plate, and a lead screw nut is installed at the bottom of the positioning plate. The lead screw is sleeved with the lead screw nut, one end of the lead screw is installed on the lead screw seat, the other end of the lead screw is fixedly connected with the output end of the first motor, the first motor is installed on the base through the motor fixing plate, a sliding block is installed at the bottom of the positioning plate and arranged on a sliding rail in a sliding mode, and the sliding rail is installed on the base. The included angle of the V-shaped structure is 90 degrees, and according to mechanical analysis, cl