Pneumatic transfer system and a fluid flow control device theref

Pumps – One fluid pumped by contact or entrainment with another – Jet

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Details

137205, 417186, 417188, 417197, F04F 520, F04F 552

Patent

active

044228333

ABSTRACT:
A fluid flow control device includes a first fluid flow passageway, a fluid inlet into the first passageway, a fluid outlet from the first passageway, a second fluid flow passageway in flow communication with the first passageway, and a fluid flow-through opening in fluid flow communication with the second passageway. The fluid flow control device is controlled to selectively provide, alternatively, a vacuum or a pressure condition at the flow-through opening. A pneumatic transfer system is also disclosed for alternately transferring a batch of particulate material from a storage area to a batching vessel, and for transferring the particulate material from the batching vessel to a remote location. The system includes a single blower having its high pressure side in flow communication with the fluid flow control device for selectively providing both vacuum and pressure conditions in the batching vessel to effect the selected transferring of particulate material into and out of the batching vessel. A gas separation filter device is provided for separating particulate material from the conveying fluid when the batching vessel is being filled, and which is back flushed of entrained particulate material when the batching vessel is being emptied.

REFERENCES:
patent: 399715 (1889-03-01), Wheeler
patent: 1453513 (1923-05-01), Metz
patent: 1458523 (1923-06-01), Coutant
patent: 2019968 (1935-11-01), Holloway
patent: 2524559 (1950-10-01), Campbell
patent: 2594962 (1952-04-01), McDonald
patent: 2602398 (1952-07-01), Nittka
patent: 2676575 (1954-04-01), Rosenberger
patent: 3435850 (1969-04-01), Male
patent: 3625404 (1971-12-01), Probst
patent: 3799195 (1974-03-01), Hermans

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