Fluent material handling – with receiver or receiver coacting mea – Processes – Gas or variation of gaseous condition in receiver
Patent
1978-06-23
1980-01-08
Schmidt, Frederick R.
Fluent material handling, with receiver or receiver coacting mea
Processes
Gas or variation of gaseous condition in receiver
13762521, 141 83, 141102, 177122, 222195, 406128, B65B 132
Patent
active
041823834
ABSTRACT:
A metering method and apparatus is provided for the controlled discharge of powder from a fluidized-bed blender to a material container, which gives accurate material weights while separating powder from fluidizing gas. In this method the material container is filled with a series of short duration discharges at a reduced powder flow rate. This method enables the apparatus to more precisely measure the weight of the container and maintain homogeneity of the blended material in both the bed and the container. The apparatus for carrying out this method includes a flexible pressure-tight sleeve connecting the fluidized bed to the container. When a ball valve located at the bottom of the fluidized bed opens to discharge powder, the sleeve retains the high pressure fluidizing gas inside the sleeve and the container. This causes the pressure to build at the outlet of the valve thus preventing the gas from rapidly exhausting and forcing powder through the outlet. The short duration discharges are terminated when a load cell, provided to electronically weigh the container, measures a predetermined material weight. To improve accuracy, the load cell measurement is monitored only during the relatively quiescent period between discharges, and the measured weight of the material in the container is continuously corrected to eliminate the effects of fluidizing gas pressure forces. Finally, an off-gas hose extending from the container lid exhausts the fluidizing gas at a controlled rate of flow and separates the gas from the powder.
REFERENCES:
patent: 3128129 (1964-04-01), Stine et al.
patent: 3163329 (1964-12-01), Mornas
patent: 3237805 (1966-03-01), Stogner
patent: 3319828 (1967-05-01), Maxwell
patent: 3355221 (1967-11-01), Reuter
patent: 3474874 (1969-10-01), Pettis, Jr.
patent: 3599832 (1971-08-01), Smith
patent: 3632173 (1972-01-01), Reuter
patent: 3773221 (1973-11-01), Lesk et al.
patent: 3776599 (1973-12-01), Reuter
patent: 3837540 (1974-09-01), Wagener
patent: 3840155 (1974-10-01), Frye et al.
patent: 3887110 (1975-06-01), Porter
patent: 3942562 (1976-03-01), Ridgway et al.
Adomitis John T.
Larson Richard I.
Forman Joseph B.
General Electric Company
Jacob Fred
Schmidt Frederick R.
Turner Samuel E.
LandOfFree
Fluidized bed powder discharge and metering method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fluidized bed powder discharge and metering method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluidized bed powder discharge and metering method and apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1939978