Rotary apparatus having passageways to clean seal chambers

Details Rotary apparatus having passageways to clean seal chambers Rotary apparatus having passageways to clean seal chambers

1991-03-05

1992-03-17

Vrablik, John J.

Rotary expansible chamber devices

Convertible or changeable by assembly or disassembly

418144, 418181, 418206, 4151213, 4151743, 277 92, 277 95, F04C 218, F04C 1500, F04D 2908, F04D 2970

Patent

active

050963961

ABSTRACT:
Improvements are disclosed in a rotary, lobar, positive-displacement pump and in a rotary, centrifugal pump, whereby all product-contacting areas of the pumps can be effectively cleaned without disassembly, i.e., cleaned in place. Non-rotating seals seal the impellers and isolate the pump shafts from the product zone. Each seal has an elastomeric member molded integrally thereto. The seal is biased by the elastomeric member so as to be slidably pressed against an impeller. In the lobar pump, certain passageways can be selectively closed and opened, so as to adapt the pump for being used to pump a pumpable material when closed and for being cleaned by a cleaning solution flowing therethrough when opened. Valves may be alternatively provided for analogous purposes.

REFERENCES:
patent: 1624099 (1927-04-01), Haight
patent: 2013499 (1935-09-01), Mechenstock
patent: 2633807 (1953-04-01), Collura
patent: 3452994 (1969-09-01), Gyory
patent: 3481273 (1969-12-01), Werra
patent: 4153400 (1979-05-01), Morita
patent: 4293290 (1981-10-01), Swanson
patent: 4413831 (1983-11-01), Washida et al.
patent: 4534717 (1985-08-01), McCabe et al.
patent: 4538959 (1985-09-01), Cantor et al.
Undated page of technical literature, Albin Pump Type SLP.
Photocopy of Tri-Clover.TM. Catalog PR73, 1982.
Sheet of disclosure prepared by inventor, Elmer Scott Welch.

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