Magnetic pump

Details Magnetic pump Magnetic pump

1995-06-09

1996-12-03

Look, Edward K.

Rotary kinetic fluid motors or pumps

Including shaft transmission train, brake, clutch, or...

415200, 4152161, 4152171, 415229, 417420, 41742312, 416241A, F04D 2902, F04D 2904

Patent

active

055802168

ABSTRACT:
A magnetic pump is provided which is especially useful for pumping corrosive agents, having simplified components made of a hard ceramic, preferably silicon carbide, which form ceramic-on-ceramic axial and radial bearing surfaces. The pump has an impeller and magnetic rotor, each being mounted on an opposite end of a ceramic shaft by a respective ceramic bush. The shaft rides in ceramic first and second plain bearing bushes, each of which forms a radial bearing surface and an axial bearing journal end face. The ceramic impeller bush is secured to the shaft by a form fit and provides an axial bearing surface against the first bearing bush end face. Similarly, the ceramic rotor bush is secured to the shaft by a form fit and forms an axial bearing surface against the end face of the second plain bush.

REFERENCES:
patent: 3969043 (1976-07-01), Bright et al.
patent: 4120618 (1978-10-01), Klaus
patent: 4637750 (1987-01-01), Ward
patent: 4850818 (1989-07-01), Kotera
patent: 4915589 (1990-04-01), Gessler et al.
patent: 5066200 (1991-11-01), Ooka
D. Gebhard, "Hermetisch dichte Chemie-Kreisel-Pumpen in Kunststoffausfuhrung", Weitere Informationen cav-47 Sep. 1982, pp. 58-59.
Ahlfeldt, "Wirksame Schutzeinrichtungen", Weitere Informationen cav-67, Apr. 1993, pp. 84, 86.

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