FIELD: engines and pumps.
SUBSTANCE: invention relates to the field of pump engineering for use mainly in medical equipment. Piston pump 10 for fluid pumping comprises at least one cylinder 11; 11' with piston 16; 16', moving 11; 11' by means of an actuator. Each cylinder 11; 11' has a mounting flange on its end surface 14; 15 with at least one cylinder opening 30; 31; 32; 33 and variable displacement chamber 23; 23' between each piston 16; 16' and mounting flange 14; 15. Pump 10 has inlet port 12 and outlet port 13 for supply and removal of fluid. Valve rotating disc 20 is located on the side of mounting flange 14; 15. The valve disc rests on the corresponding mounting flange 14; 15. Inlet port 12 and/or outlet port 13 is attached to at least one mounting flange 14; 15. Mounting flange 14; 15 has at least one passage 34; 35 in the area of inlet port 12 and outlet port 13 through which the fluid flows between inlet port 12 and/or outlet port 13 and the other side of mounting flange 14; 15. Valve disc 20 has a fluid supply means, whereby at least one cylinder opening 30; 31; 32; 33 in each position is connected to passage 34; 35 of inlet port 12 and/or outlet port 13, when valve disc 20 is rotated between two angular positions.
EFFECT: reduced dimensions, simplified operation.
15 cl, 20 dwg
