Vacuum feed system for liquid chemical feeding

Details Vacuum feed system for liquid chemical feeding Vacuum feed system for liquid chemical feeding

2006-04-25

2006-04-25

Krishnamurthy, Ramesh (Department: 3753)

Fluid handling

Self-proportioning or correlating systems

Self-controlled branched flow systems

C137S613000, C137S614200, C137S893000

Reexamination Certificate

active

07032609

ABSTRACT:
A vacuum feed system for feeding liquid chemical into a stream of a second liquid flowing in a conduit includes a venturi connected in the conduit for supplying vacuum through first and second one-way check valves, a flow regulating valve, and a vacuum regulated flow control valve connected to a supply of liquid chemical to be fed. A pressure relief valve connected between the first and second check valves prevents back flow through the system. The components of the system, from the vacuum regulated flow control valve to the venturi, are arranged to provide a continuous upward flow path to thereby eliminate trapped gas in the system.

REFERENCES:
patent: 3194254 (1965-07-01), Zmek
patent: 3817264 (1974-06-01), Kilayko
patent: 5285808 (1994-02-01), Clanin
patent: 2002/0170853 (2002-11-01), Alexander

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