Extraction tank

The utility model provides an extraction tank, which aims to solve the technical problem that the opening or closing of a cover body on the extraction tank in the prior art consumes time and labor, has the advantages of time saving and labor saving when the cover body is opened, and comprises a tank body, a material inlet, a material outlet and a material outlet, one side of the cover body is hinged to one side of the feeding port, and the feeding port can be covered with the cover body; the cover opening mechanism is provided with an output end connected with the cover body; the cover pressing mechanism is provided with a cover pressing end which can be connected with the cover body; wherein the output end of the cover opening mechanism is connected to a hinge of the cover body and the feeding port, the output end of the cover opening mechanism can drive the cover body to rotate around the hinge by at least 90 degrees, and the output end of the cover pressing mechanism can be connected with the end, away fro