초록 ▼

A high-pressure, plunger-type liquid pump including a liquid manifold that includes a plunger chamber in the form of an axial cylindrical bore portion for slidably receiving a pressurizing plunger, and that also includes a valve chamber coaxial with the plunger chamber and in communication therewith

A high-pressure, plunger-type liquid pump including a liquid manifold that includes a plunger chamber in the form of an axial cylindrical bore portion for slidably receiving a pressurizing plunger, and that also includes a valve chamber coaxial with the plunger chamber and in communication therewith for removably receiving a cartridge-type flow control valve. The liquid manifold includes a closure plug to close the valve chamber. The cartridge-type valve is slidably received in the valve chamber for enabling removal of the cartridge-type valve from the liquid manifold without the need for separating the liquid manifold from the pump drive housing. The cartridge-type valve is of a structure that includes in-line, axially spaced suction and discharge valves that are each spring biased into closed positions. High-pressure liquid is confined within a valve housing body that contains the suction and discharge valves, to minimize damage to the liquid manifold as a result of pressure fluctuations and high-pressure flows. The cartridge-type valve is removable from the manifold without the necessity of removing or even separating the manifold from the pump drive housing.

대표청구항 ▼

A high-pressure pump having at least one pump cylinder including a reciprocating plunger for increasing the pressure of a liquid to pressures of the order of up to about 15,000 psi. and at flows of up to at least about 20 to 30 gpm. for a single pump cylinder, said pump comprising: a) a pump drive h

A high-pressure pump having at least one pump cylinder including a reciprocating plunger for increasing the pressure of a liquid to pressures of the order of up to about 15,000 psi. and at flows of up to at least about 20 to 30 gpm. for a single pump cylinder, said pump comprising: a) a pump drive housing including at least one plunger extending outwardly of the drive housing and supported for reciprocating movement along a plunger movement axis, and drive means within the pump drive housing and operatively connected with the at least one plunger for converting continuous rotational input power into linear, reciprocating movement of the at least one plunger; b) a liquid manifold overlying and at least partially enclosing the at least one plunger and adapted to be connected with the drive housing, the manifold including a plunger cylinder coaxial with the at least one plunger for receiving and supporting the at least one plunger as the at least one plunger reciprocates within the cylinder to increase the pressure of liquid contained within the cylinder, the manifold including a valve chamber having a longitudinal axis and coaxial with and in communication with the plunger cylinder and including suction and discharge passageways extending from the valve chamber to outer surfaces of the manifold for conveying liquids to and from the valve chamber and a valve removal opening on a side of the manifold opposite from the plunger cylinder and coaxial therewith, the valve removal opening providing communication between the valve chamber and an outer surface of the manifold for permitting insertion and removal of a valve into and out of the valve chamber without separating the manifold from the pump drive housing; and c) a cartridge-type valve removably carried in the valve chamber to control liquid flow into and out of the plunger cylinder, the cartridge-type valve defining within the valve chamber a suction valve chamber for receiving fluid to be pressurized, and including at least one passageway for providing fluid communication between the suction valve chamber and the suction passageway in the liquid manifold, and a suction valve for controlling flow of low-pressure liquid into the plunger cylinder and a discharge valve for controlling flow of high-pressure liquid from the plunger cylinder, the manifold suction passageway providing communication via the at least one passageway between an inlet opening in the manifold and the suction valve for admitting into the cartridge-type valve liquid to be pressurized, the suction valve being movable into a position blocking fluid communication between the at least one passageway and the suction valve chamber and the manifold discharge passageway providing communication between the discharge valve and an outlet opening in the manifold for conducting pressurized liquid from the cartridge-type valve to the outlet opening in the manifold.