Full-automatic pipette cleaning device

The utility model discloses a full-automatic transfer pipette cleaning device. The device comprises a water storage tank, a cylinder is mounted above the water storage tank; a fixed disc in sealed connection is arranged at the bottom of the cylinder; a water outlet hole and a water inlet hole are formed in the fixed disc; a water outlet hole in the fixed disc is connected with a water outlet guidepipe; the water outlet guide pipe extends into the water storage tank and is fixedly connected with the water storage tank; a water inlet hole in the fixed disc is connected with a water inlet branchpipe; the water inlet branch pipe is connected with one end of the water inlet main pipe; the other end of the water inlet main pipe is connected with an outlet of a micro water pump arranged above the water storage tank; the other two valve ports of the three-way valve are connected with an external water inlet pipe and an internal water inlet pipe respectively, the other end of the external water inlet pipe is connected