High-precision liquid medicine feeding device for mineral aggregate flotation

The utility model relates to a high-precision liquid medicine feeding device for mineral aggregate flotation, and belongs to the technical field of mineral processing equipment. Comprising a pesticide storage barrel, a constant-pressure tank, a mounting table, a pneumatic valve, a pesticide outlet and a flow limiter, a guide rod is mounted on the mounting table, a constant-pressure groove is formed in the guide rod, and a pressure-bearing spring is arranged on the guide rod; a valve body is arranged on the side of the constant-pressure groove, a valve cavity is formed in the valve body, one end of the valve cavity is connected with the pesticide storage barrel through a pipeline, and the other end of the valve cavity extends to the position above the constant-pressure groove through a pipeline. The flow of supplied liquid medicine is limited to be constant through the flow limiter, accurate supply of the liquid medicine is achieved by controlling the opening time of the pneumatic valve, the structure is simpl