Metering valve

Details Metering valve Metering valve

2006-02-07

2006-02-07

Chambers, A. Michael (Department: 3753)

Fluid handling

Processes

C251S161000, C251S162000, C251S304000

Reexamination Certificate

active

06994100

ABSTRACT:
A metering valve for metering dry powder material such as cement. The interior of the valve housing is expanded outward beginning at the sealing surface or lip located adjacent to the inlet opening, thereby forming an enlarged gap between the valve sleeve and housing to discourage powder accumulation in the gap and interference of large bulk particles and foreign materials with the sleeve and housing. An eccentric intermediate sleeve aligns the valve sleeve relative to the housing prior to rotation of the valve sleeve by either moving the valve sleeve away from or toward the valve inlet. The valve sleeve has a rubberized layer to seal with the housing's sealing surface or lip. A sleeve shield blocks entry of powder into the mouths of the vacuum breakers to prevent plugging of the vacuum breakers. Ball bearings are employed to suspend the valve sleeve within the housing, making the valve sleeve easier to rotate.

REFERENCES:
patent: 3276466 (1966-10-01), Herbert
patent: 3353785 (1967-11-01), Eggers
patent: 3910554 (1975-10-01), Speedie
patent: 5310162 (1994-05-01), Baumann
patent: 5355951 (1994-10-01), Allen et al.
patent: 5571281 (1996-11-01), Allen
patent: 6789565 (2004-09-01), Allen
patent: 02-108842 (1990-04-01), None
Clyde Spheri Valve, Clyde Pheumatic Conveying, PO Box 326, Milford Ohio.

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