Conveyors: fluid current – Intake to fluid current conveyor – Load receptacle type
Patent
1987-04-09
1988-10-11
Barefoot, Galen
Conveyors: fluid current
Intake to fluid current conveyor
Load receptacle type
406125, 406128, 406136, 13762519, B65G 5336
Patent
active
047767308
ABSTRACT:
A system and method for the transport of fly ash and other particulate matter. The system comprises (a) a fly ash hopper; (b) a metering container for measuring the amount of fly ash to be transported; (c) a first valve for regulating the movement of fly ash between the hopper and the metering container; (d) a transport line for transporting fly ash out of the metering container; (e) a second valve for regulating the movement of fly ash between the metering container and the transport line; (f) a third valve for regulating venting and pressurization of the metering container; and (g) means for moving the plug between first and second positions, the movement means being in physical communication with the third valve. The third valve comprises (i) a valve body having a bore and five ports in communication with the bore; (ii) a valve plug movably mounted in the bore between the first and second positions; and (iii) sealing means for preventing fluid passage out of the bore other than through the ports. When the plug is moved into the first position, pressurization gas can flow into a first port, through a first passage, and out a second port into the metering container to fluidize fly ash therein so that fly ash can drop out of the hopper, through the first valve, and into the metering container. Passage of pressurization gas through a third port is prevented and gas in the metering container is vented through a fourth port, through a second passage, and through the fifth port into the hopper to allow fly ash to flow into the metering container. When the plug is moved to a second position in the valve body, gas passage is prevented through the second, fourth and fifth port. Pressurization gas flows into the first port, through a third passage, and out the third port into the metering container to pressurize the metering container and fluidize the ash so that the fly ash drops out of the metering container and into the transport line when the second valve is open.
REFERENCES:
patent: 1188085 (1915-03-01), Krupp
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patent: 4118075 (1978-10-01), Lubbehusen
patent: 4355659 (1982-10-01), Kelchner
Hughes Leslie G.
Nearen William F.
Barefoot Galen
Salmon Paul E.
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