Pump valve mechanism

Details Pump valve mechanism Pump valve mechanism

2008-09-09

2008-09-09

Wilson, Lee D (Department: 3723)

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

C015S302000, C015S321000, C134S001000, C134S16700R

Reexamination Certificate

active

10920079

ABSTRACT:
A method for cleaning tubes and heat exchangers provides an oscillating pump/valve mechanism to provide a periodic waveform of shocks to fouled tubes. Preferably, a pair of pneumatic control valves operates an actuator to oscillate a valve within a valve block, and isolation of a fluid within a manifold in the block creates a pumping action from the valve, to create an intense fluid shock wave to clean interior surfaces tubes.

REFERENCES:
patent: 5423917 (1995-06-01), Garcia, Jr.
patent: 5493754 (1996-02-01), Gurstein et al.
patent: 5647089 (1997-07-01), Hollrock
patent: 5674323 (1997-10-01), Garcia
patent: 6282746 (2001-09-01), Schleeter
patent: 7141118 (2006-11-01), Vaerewyck et al.
patent: 7306001 (2007-12-01), Garcia, Jr.

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