Piston pump for high pressure cleaning device, has control piston working together with switch gear, and injector including injection line that branches from pressure line, where injector is adjustable in pressure line and is held at piston

摘要

The pump has an injector (33) arranged in a pressure line (24), where the injector includes an injection line that branches from the pressure line. A movable control piston (30) works together with a switch gear (51) for disconnecting the pump. The control piston is impinged on its front side with a pressure that is dominant in the injection line and is impinged on its rear side with a pressure that is dominant with upstream of the injection line. The injector is adjustable in the pressure line and is held at the piston. The gear includes a tilt lever (47) tiltable by a switch rod (42).