Transfusion bag filling mechanism

The utility model relates to a transfusion bag filling mechanism, which comprises a filling head, a drug inlet pipe and a drug transfusion pipe, and is characterized in that a drug transfusion pipeline is provided with a three-way pipe which is respectively connected with the drug inlet pipe, a drug outlet pipe and a measuring pump, each pipeline is provided with a one-way valve, a measuring pump piston rod is connected with a measuring pump air cylinder through a lever of which the supporting point position is adjustable, and the filling head is connected with an air cylinder through a filling head supporting board. A supporting board of the filling head is fixedly connected with one end of a shaft which is sheathed with a linear bearing and a protective jacket, and the other end of the shaft is connected with an air cylinder piston rod. An air cylinder body is fixed on an installing board on the air cylinder and on the installing board under the air cylinder. The medicine feeding, medicine discharging and stop filling of the physic liquor of the utility model are realized through the three-way pipe, the opening or closing is controlled by the one-way valve arranged on each pipeline, both ends of the lever are respectively connected with a measuring pump oil cylinder and the measuring pump, the accuracy of physic liquor measuring can be guaranteed effectively, and the utility model is convenient for maintenance and filling amount adjustment. The entire mechanism structure design of the transfusion bag filling mechanism is simple, and the transfusion bag filling mechanism has small ground occupation and convenient use.