Pump system for cleaning apparatus

Brushing – scrubbing – and general cleaning – Machines – With air blast or suction

Patent

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Details

15339, 154222, A47L 1134

Patent

active

050995430

ABSTRACT:
The cleaning apparatus includes a support device for supporting a spray member for receiving and spraying hot liquid onto a surface to be cleaned and a vacuum head for withdrawing liquid and material from the surface by reduced pressure. Also included are a container, a manifold haivng first and second chambers, a pump, and a heat exchanger. The heat exchanger inlet is coupled to the first chamber and a flexible high pressure liquid conduit is coupled to the heat exchanger outlet and to the spray member by way of a control valve. The pump inlet is coupled to the second chamber and the pump outlet is coupled to the first chamber. A return conduit is coupled from the flow control valve to the second chamber. A pressure adjustment valve is coupled to the two chambers for controlling variations of the pressure in the two chambers and hence at the pump outlet.

REFERENCES:
patent: 3663984 (1972-05-01), Anthony et al.
patent: 3848290 (1974-11-01), Bates
patent: 4580309 (1986-04-01), Ogden
patent: 4723337 (1988-02-01), Ellison et al.
patent: 4862551 (1989-09-01), Martinez et al.

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