Priority control for hydraulic consumers

Details Priority control for hydraulic consumers Priority control for hydraulic consumers

1986-02-20

1987-05-19

Nilson, Robert G.

Fluid handling

Self-proportioning or correlating systems

Self-proportioning flow systems

G05D 1103

Patent

active

046659390

ABSTRACT:
In a priority control device the supply flow to the lower-ranking consumer is set by a flow control valve (pressure balance) whose control chamber subjected to the control pressure of the lower-ranking consumer can be relieved of pressure via a proportional valve. The proportional valve is adjusted in dependence upon the load pressure of the priority consumer so that the flow of fluid to the lower-ranking consumer is throttled by the pressure balance when the pressure difference at the priority consumer drops on increased volume flow requirement. The priority control device thus consists of two simply constructed power valves and a small-dimensioned pilot valve.

REFERENCES:
patent: 3642019 (1972-02-01), Kramer
patent: 4070857 (1978-01-01), Wible
patent: 4087968 (1978-05-01), Bianchetta

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