PUMP Russian patent published in 2025 - IPC F04B15/00 F04B53/10 F16K1/42 

FIELD: pumps.

SUBSTANCE: invention relates to piston pumps for pumping thick liquids with abrasives. Pump comprises housing 1 with suction cavity 29, in which at least one hole 2 is made to accommodate cylinder 3 between housing stop 6 and detachable connection 7 and made with central hole 4 in bottom 5 of cylinder 3, shutoff member 34 of pressure valve with spring 36 and seat 26, installed inside cylinder 3 in front of cover 31 with formation of pressure cavity 35, piston 9 with rod 10. Reverse side of seat 26 serves as a seat of the suction valve, the shutoff member of which is made in the form of sleeve 8 enclosing piston 9. Collar 12 is fitted on rod 10 on reverse side of piston 9. Bottom 5 is equipped with at least two rockers 14 installed on posts 15 with possibility of limited rotation around axes installed on lugs, installed in the middle part between collar 12 and sleeve 8. In peripheral part levers of rockers 14 on the side of piston 9 are equipped with protrusions with possibility of their alternate interaction with ends of sleeve 8 and collar 9, and levers on the side of sleeve 8 – with bottom 5.

EFFECT: invention is aimed at reducing labour intensity of manufacturing, installation and maintenance of the pump.

3 cl, 5 dwg