HAND PUMP Russian patent published in 2024 - IPC F04B9/14 B05B9/00 

FIELD: equipment for supply of liquid under pressure.

SUBSTANCE: invention relates to equipment for supplying liquid under pressure and can be used in washing various surfaces. Hand pump comprises casing, valves and branch pipes, wherein pump casing features rectangular cross-section. In the housing there are three chambers in the form of cylindrical holes with bypass valves, which are pressure and suction valves, which form delivery and suction areas of the pump with inlet and outlet nozzles. Partitions with shafts with plates rigidly fixed on shafts are installed inside the housing in cylindrical holes. Free ends of shafts by means of levers are connected to the handle, during movement of which the shafts in the chambers turn the plates, forming simultaneously the liquid compression area and the liquid suction area, which leads to actuation of valves in the area of compression and suction, providing opening of the discharge valve and closing of the suction valve for the area of fluid compression and, accordingly, closing of the pressure valve and opening of the suction valve for the area of fluid suction.

EFFECT: providing reliability of pump operation and improvement of its pumping properties.

1 cl, 4 dwg