Conveyors: fluid current – With means to control conveying fluid or movement of load in... – Control of conveying fluid
Patent
1992-05-04
1993-10-12
Mitchell, David M.
Conveyors: fluid current
With means to control conveying fluid or movement of load in...
Control of conveying fluid
406 89, 406 93, 406 94, 406191, 406193, B65G 5366, B65G 5352
Patent
active
052520072
ABSTRACT:
An apparatus for facilitating solids transport in a pneumatic conveying l. The apparatus reduces the velocity of a gas within the pneumatic conveying line. The following describes a preferred embodiment. An inner cylinder is spliced into the line. An upper portion of the inner cylinder is made of a porous material. An outer cylinder having a diameter larger than the inner cylinder encircles the inner cylinder and defines a cavity therebetween. Two solenoid valves are associated with the outer cylinder; one for purging the gas and the other for introducing a reverse jet of gas to dislodge particles from the porous material. A pressure transducer measures fluctuations across the top of the inner cylinder and is connected to a control unit which, in turn, controls the valves.
REFERENCES:
patent: 4083607 (1978-04-01), Mott
patent: 4704054 (1987-11-01), Rakowicz et al.
patent: 4859120 (1989-08-01), Tsubata et al.
Dhodapkar Shrikant
Klinzing George E.
Kikel Suzanne
Mitchell David M.
Pike Andrew C.
Silverman Arnold B.
University of Pittsburgh of the Commonwealth System of Higher Ed
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