Dispensing – Gas or vapor dispensing
Patent
1987-01-21
1988-08-30
Rolla, Joseph J.
Dispensing
Gas or vapor dispensing
222195, 285179, B67B 724
Patent
active
047670240
ABSTRACT:
A blowing device for the elimination of compactions in bulk material storage silos by using air blasts, includes a compressed air storage container, a compressed air supply duct, a compressed air outflow duct and an interposed rapid exit valve. The rapid exit valve has a conduit in which a valve closure is guided whereby the conduit turns into the compressed air supply duct forming an afflux cross-section for the valve piston over a miter cut or tube turn. The afflux cross-section is selected to be significantly greater than the outflow cross-section in the compressed air outflow duct. In this way, the flow losses, and pressure losses, otherwise customary are considerably reduced, so that extremely high flow velocities can be achieved in the compressed air outflow duct until the velocity of sound is reached. The result is a rapid impulse-like discharge of the compressed air storage container and, consequently, faultless elimination of possible compactions.
REFERENCES:
patent: 1226427 (1917-05-01), White
patent: 1272794 (1918-07-01), Girtanner
patent: 2587170 (1952-02-01), Klingler et al.
patent: 3942684 (1976-03-01), Stetson
patent: 4021058 (1977-05-01), Suzuki et al.
patent: 4387914 (1983-06-01), Paulson et al.
patent: 4676402 (1987-06-01), Stetson
Noland Kenneth
Rolla Joseph J.
VSR Engineering GmbH Fordertechnik
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