PISTON PUMP FOR HIGH PRESSURE WASHER Russian patent published in 2024 - IPC F04B1/452 B08B3/02 

FIELD: engines and pumps.

SUBSTANCE: invention relates to a piston pump for a high-pressure washer. Pump (10) has housing (12) containing first housing part (14) and second housing part (16), each of which is made of metal. Part (14) forms suction line (20) and pressure line (22). Part (16) forms several working chambers (24), in each of which there is reciprocating piston (26, 28) and each of which communicates with line (20) through corresponding inlet channel, and with line (22)—through corresponding outlet channel (34). Inlet channel is closed by inlet valve (52). Channel (34) is closed by outlet valve (99). Each valve (99) has a fixed seat and a shutoff element installed with possibility of back-and-forth movement relative to the seat and having a plate made with possibility of tight fit to the seat. Part (16) has a valve seat, into which all channels (34) open. Pump (10) comprises outlet valve unit (100) forming all valves (99). Unit (100) of outlet valves comprises an outlet part consisting of polymer material inserted into the valve seat and forming seats of all outlet valves.

EFFECT: invention is aimed at improving the production processability of the piston pump.

32 cl, 11 dwg