Conveyors: fluid current – Intake to fluid current conveyor – Combined intake and discharge
Patent
1979-07-05
1981-07-14
Nase, Jeffrey V.
Conveyors: fluid current
Intake to fluid current conveyor
Combined intake and discharge
406146, B65G 5340
Patent
active
042783674
ABSTRACT:
An improved automatic feeder apparatus is described for cyclically receiving dry particulate or powdered material from a source and feeding the same into a conveying line under fluid pressure. The feeder apparatus comprises a transfer vessel having a material inlet for receiving materials from the source and a material outlet coupled into an outlet chamber where the materials are fluidized and fed into the conveying line. Pressure generating means including appropriate valving are provided for continuously supplying a positive air pressure to the chamber for fluidizing the materials, and for alternatively establishing a positive and negative air pressure within the transfer vessel several times a minute to assist in unloading and loading, respectively. The flow of materials into the chamber is controlled by a hinged flap valve which automatically opens and closes in response to changes in pressure within the transfer vessel and chamber. A regulator is provided for regulating the pressure of compressed air in the transfer vessel to a predetermined value below the source pressure and below the maximum pressure in the chamber, which together with the flap valve prevents the lines from clogging.
REFERENCES:
patent: 2608446 (1952-08-01), La Pota
patent: 3372958 (1968-03-01), Black
patent: 3861830 (1975-01-01), Johnson
Cyclonaire Corporation
Nase Jeffrey V.
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