Flow regulator with pressure relief combination valve
AssigneeHydraForce, Inc.
InventorZilek Liberfarb
Life of this patent
Estimating the term…
Abstract
A flow regulator with pressure relief combination valve is disclosed which can include a housing and a valve assembly. The housing can have a chamber and four ports. A cage, having a plurality of cross holes, is supported by the housing. A hollow spool is slidably disposed within the cage and is biased to engage the cage. A shoulder of the cage and a counterbore of the spool cooperate to interferingly retain an insert. A poppet is slidably disposed inside of the cage. The valve assembly includes an adaptor, a spring disposed within the adaptor, a guide disposed between the spring and the poppet, and an adjuster adjustably secured to the adaptor. The spring is arranged to bias the poppet against a seat via the guide. The adjustor is movable to adjust the position of the spring.
Claims17
A valve comprising:
- a housing, the housing having a chamber and an input port, a priority flow port, a return flow port, and a bypass port, the ports communicating with the chamber;
- a cage supported by the housing, the cage having a plurality of cross holes, the cage having an open end connected to the input port, the cage having a stop and a shoulder;
- a hollow spool slidably disposed within the cage, the spool having a counterbore, the spool biased to engage the cage;
- an insert disposed within the cage adjacent the shoulder of the cage, the insert disposed within the counterbore of the spool, the shoulder of the cage and the counterbore of the spool cooperating to interferingly retain the insert and to define a dampening chamber;
- and
- a relief valve assembly, the valve assembly including a seat disposed adjacent the shoulder of the cage opposite to the insert, a poppet slidably disposed inside of the cage, an adaptor mounted to the cage, a spring disposed within the adaptor, a guide disposed between the spring and the poppet, and an adjuster adjustably secured to the adaptor, the spring arranged to bias the poppet against the seat via the guide, the adjustor operable to adjust the position of the spring.
A cartridge type priority flow regulator comprising:
- a housing, the housing having a chamber and an input port communicating with the chamber;
- a cage having a plurality of cross holes, the cage having an open end connected to the input port, the cage having a stop and a shoulder;
- a hollow spool slidably disposed within the cage, the spool having a counterbore, the spool biased to engage the cage;
- and
- an insert disposed within the cage adjacent the shoulder of the cage, the insert disposed within the counterbore of the spool, the shoulder of the cage and the counterbore of the spool cooperating to interferingly retain the insert and to define a dampening chamber.
A valve comprising:
- a housing, the housing having a chamber and an input port, a priority flow port, and a bypass port, the ports communicating with the chamber;
- a cage supported by the housing, the cage having a plurality of cross holes, the cage having an open end connected to the input port, the cage having a stop and a shoulder;
- a hollow spool slidably disposed within the cage;
- an insert disposed within the cage adjacent the shoulder of the cage, the insert disposed adjacent the spool, the cage and the spool cooperating to interferingly retain the insert and to define a dampening chamber;
- a spring disposed within the spool, the spring biasing the spool to engage the stop of the cage;
- wherein the input port and the priority flow port are in fluid connection with each other via a priority flow path through the cage and the spool, and wherein when a flow supply rate of a fluid at the inlet port exceeds a predetermined level, the spool moves in response thereto away from the stop of the cage to establish a bypass flow path between the input port and the bypass port, such that a predetermined priority flow rate is substantially maintained in the priority flow path and any excess flow is directed along the bypass flow path.
Dependencies are inferred from the claim text.