Conveyors: fluid current – Slug conveying
Patent
1983-10-28
1986-04-08
Nase, Jeffrey V.
Conveyors: fluid current
Slug conveying
406 85, 406119, 406131, B65G 5366, B65G 5346
Patent
active
045809275
ABSTRACT:
A pneumatic material transportation apparatus utilizes a continuous supply of particulate material which is fed to an open hopper, and flows by gravity through a pneumatic sealing feed valve into a pulse drive chamber containing a series of internal gravity flow chambers. Near simultaneous timed pulses of compressed air applied to the upper and lower portions of the drive chamber forces the feed valve to a closed position. The air fluidizes the particulate material, and drives the material from the upper end of the internal gravity flow chambers through a lower drive passage and outlet check valve into a pneumatic transport line. Cessation of the air pulse reduces the pressure within the chamber to ambient. The outlet check valve is forced closed and the inlet feed valve opens, thereby admitting more particulate material and resuming the cycle. A plurality of drive chambers can be combined beneath the filled open hopper so that alternating pulses permit a continuous flow of material to the pneumatic transport line. Varying the duration of the pulse alters the travel distance of the material.
REFERENCES:
patent: 3115369 (1963-12-01), Bozich
patent: 3734569 (1973-05-01), Vingas
patent: 4061401 (1977-12-01), Brown
patent: 4420279 (1983-12-01), Easley, Jr.
Jones MaryBeth O.
Nase Jeffrey V.
Pnu-Tank, a division of Gulf Island Industries
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