Conveyors: fluid current – With diverse power-driven conveyor – Rotary
Patent
1985-02-21
1986-10-07
Peters, Jr., Joseph F.
Conveyors: fluid current
With diverse power-driven conveyor
Rotary
198671, 414218, 366192, 100147, B65G 3322, B65G 5304
Patent
active
046156470
ABSTRACT:
A conveying apparatus includes a casing having a bore therethrough with an inlet for solid particulate material to be conveyed and an outlet. A screw impeller is rotatably mounted in the casing by front and rear bearings with the rear bearings being positioned near the inlet. Material is discharged from the casing through a coaxial outlet into a discharge chamber. Gaseous fluid under pressure is supplied to the discharge chamber for entraining and conveying the particulate material through a pneumatic conveying line which is flow connected to the outlet of the discharge chamber. A valve, which closes the outlet of the casing, is biased closed by a weight and opened by material being advanced by the screw impeller. The valve includes a valve plate with an opening which surrounds the shaft of the screw impeller and provides a seal at the casing to substantially prevent gaseous fluid from entering the casing. The valve plate is shaped so that it includes a first portion which defines half of the opening through the valve element and a second portion which defines the other half of the opening. The first portion is longitudinally spaced from the second portion so that when the valve pivots from a closed position to an open position, the edges of the opening adjacent the shaft will pivot away from the shaft at least during the initial stages opening valve.
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Fuller Company
Jones Mary Beth O.
Peters Jr. Joseph F.
Thomson Frank H.
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