Filtering and refining device for injection production and working method thereof

The invention provides a filtering and refining device for injection production and a working method thereof, and relates to the technical field of pharmaceutical manufacturing equipment. The filtering and refining device for injection production comprises a fixing plate, bottom connecting plates are fixedly connected to the center and the rear end of the top of the fixing plate, top connecting plates are arranged at the tops of the bottom connecting plates, and first hydraulic cylinders are fixedly connected to the left sides and the right sides of the tops of the two top connecting plates; and an adapter is fixedly connected between the output ends of the left and right adjacent first hydraulic cylinders. The check valves and the connectors are used for pulling out and stopping conveying of raw materials, the raw materials are conveyed through connection, one of the two material barrels conveys the raw materials outwards, the other one of the two material barrels injects the raw materials into the barrels,