Liquid purification or separation – Tangential flow or centrifugal fluid action – With movable means affecting flow
Patent
1990-10-31
1992-04-14
Dawson, Robert A.
Liquid purification or separation
Tangential flow or centrifugal fluid action
With movable means affecting flow
2105121, 4151821, 415203, 415206, 415207, 416179, 416182, 416105, 416108, 41742314, C02F 138
Patent
active
051045419
ABSTRACT:
A pump has an impeller with a circular series of airfoil vanes rigidly mounted thereon. The impeller is mounted in a casing which has a radially outwardly increasing internal axial extent, such that fluid flowing through the pump has a less constricted path peripherally of the pump chamber than centrally of the pump chamber. In another aspect of the invention, the impeller comprises two axially adjacent series of vanes separated by a radially extending partition which divides the interior of the pump casing into a vacuum chamber and a pressure chamber interconnected by a hole formed in the center of the partition. At least one of the central partition and the impeller plate are conical in shape, thereby to impart a radially outwardly expanding axial extent to the vacuum chamber, and a decreasing axial extent to the pressure chamber. By providing a pair of outlets communicating with the vacuum and pressure chambers, there is provided a pump which is effective to separate a mixture of liquid components having different densities.
REFERENCES:
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patent: 4312751 (1982-01-01), Casamitjana
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patent: 4478712 (1984-10-01), Arnaudeau
patent: 4597859 (1986-07-01), Beck
patent: 4702837 (1987-10-01), Leoffre et al.
Dawson Robert A.
Reifsnyder David
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