PISTON PUMP Russian patent published in 2018 - IPC F04B17/04 

FIELD: hydraulic engineering.

SUBSTANCE: invention relates to hydrotransport technique and can be used to transfer liquids. Pump comprises a cylinder, a piston, a suction and discharge valve, a suction and discharge pipe and a piston displacement actuator. Piston displacement actuator is made in form of a solenoid, fixed in cylinder in front of piston and coaxially disposed to piston, the core of which is spring-loaded and one end is inserted into the solenoid hole. Its other end is attached to the piston. To cylinder with a large base is attached a coaxially placed hollow truncated cone placed behind the piston. Discharge pipe is connected to the small base of this cone. Suction pipe is located on the side wall of the hollow truncated cone of the cylinder. To piston, a coaxially located hollow truncated cone with a damped small base is attached to the plunger by the large base. Core of the solenoid is spring-loaded by means of a bellows mounted on the outside of the solenoid and coaxial to it and connected at one end to the rear wall of the cylinder, and the other end to the piston.

EFFECT: increases productivity, reduces energy costs and simplifies the design.

1 cl, 2 dwg, 1 tbl