Automatic pipetting device for laboratory

The utility model discloses a laboratory automation pipetting device which comprises a hanger plate, a servo motor, a pipetting tank and an end plate, one end of the top of the hanger plate is provided with a power box through a screw, one end of the bottom of the hanger plate is provided with the servo motor through a mounting seat, and an output shaft of the servo motor is connected with a lead screw; the screw rod is sleeved with a screw block, the bottom of the screw block is provided with an electric hydraulic cylinder through a fixing base plate and bolts, an output shaft of the electric hydraulic cylinder is provided with a metering pump through a positioning plate and screws, and a suction opening of the metering pump is connected with a suction pipe. A pipetting tank is mounted on one side of the metering pump through a screw, the bottom of the pipetting tank is connected with an output pipe, and a control valve is arranged on the output pipe. The novel laboratory pipetting device is high in automati