High pressure pump

A high pressure fluid pump comprising:

• a suction valve seat including a fluid inlet and a fluid outlet;
• a plunger housing defining a cylindrical plunder chamber therein having a central axis;
• a plunger linearly moveable within the plunger chamber along the central axis during the stroking of the pump;
• an inlet check valve for passing fluids from the fluid inlet to the plunger chamber and for preventing fluids from passing from the plunger chamber to the fluid inlet, the inlet check valve being axially moveable along the central axis for sealing engagement with the suction valve seat;
• a discharge check valve for passing fluids from the plunger chamber and for preventing high pressure fluid downstream from the discharge check valve from returning to the plunger chamber;
• a discharge housing having a pump discharge flow line therein for receiving high pressure fluid passed by the discharge check valve from the pump chamber;
• a plurality of compression rods circumferentially spaced about the central axis for pressing a rear planar face of the plunger housing into engagement with a front planar face of the suction valve seat, and for pressing a rear planar face of the suction valve seat into engagement with a front planar face of the discharge housing;
• two or more of the compression rods each having a rod front end configured for engagement with a corresponding support rod extending axially opposite the plunger housing with respect to the rod front end;
• and
• each support rod being interconnectible with a corresponding rod front end for supporting pump components during pump service and being removable from the corresponding rod front end during use of the pump wherein each rod front end includes a threaded port for receiving the corresponding threaded end of a support rod therein, and
• wherein each front end rod comprises an extension stud weldably fixed to a corresponding compression rod, the extension stud including the threaded port therein.

A high pressure fluid pump comprising;

• a suction valve seat including a fluid inlet and a fluid outlet;
• a plunger housing defining a cylindrical plunger chamber therein having a central axis;
• a plunger linearly moveable within the plunger chamber along the central axis during the stroking of the pump;
• an inlet check valve for passing fluids from the fluid inlet to the plunger chamber and for preventing fluids from passing from the plunger chamber to the fluid inlet, the inlet check valve being axially moveable along the central axis for sealing engagement with the suction valve seat;
• a discharge check valve for passing fluids from the plunger chamber and for preventing high pressure fluid downstream from the discharge check valve from returning to the plunger chamber;
• a discharge housing having a pump discharge flow line therein for receiving high pressure fluid passed by the discharge check valve from the pump chamber;
• a plurality of compression rods circumferentially spaced about the central axis for pressing a rear planar face of the plunger housing into engagement with a front planar face of the suction valve seat and for pressing a rear planar face of the suction valve seat into engagement with a front planar face of the discharge housing;
• two or more of the compression rods each having a rod front end configured for engagement with a corresponding support rod extending axially opposite the plunger housing with respect to the rod front end;
• and
• each support rod being interconnectible with a corresponding rod front end for supporting pump components during pump service and being removable from the corresponding rod front end during use of the pump,
• the discharge housing including a pressure housing portion having a liquid pressure chamber therein in fluid communication with the pump discharge flow line via a compression line for exerting a pressure force on an end plate and thereby an axial load on the plurality of compression rods,
• a control valve housing having a planar face for sealed engagement with a side face of the discharge housing, the control valve housing having a center compression line portion in fluid communication with both an upstream compression line portion in the discharge housing extending to the pump discharge fluid line, and with a downstream compression line portion in the discharge housing extending to the liquid pressure chamber, the control valve housing including a control valve therein spaced along the center compression line portion for controlling the release of high pressure fluid to the liquid pressure chamber.