Process for pneumatically conveying material and apparatus for c

Details Process for pneumatically conveying material and apparatus for c Process for pneumatically conveying material and apparatus for c

1989-04-24

1990-09-11

Basinger, Sherman

Conveyors: fluid current

With means to control conveying fluid or movement of load in...

Control of conveying fluid

406 93, 406 95, B65G 5366

Patent

active

049557610

ABSTRACT:
A process and an apparatus for pneumatically conveying material in a tubular conveyor conduit (10) into which pressure gas is introduced from a connecting conduit (12, 12.sub.a), are improved in that, in the event of a rise in pressure in the conveyor conduit (10), in the direction of conveying movement (x) upstream of the connecting conduit or the mouth opening (13) thereof, the latter is opened for a feed of air from a secondary conduit (16) under high pressure, and that said feed of air into the conveyor conduit (10) is interrupted upon equalization of the pressure in the conveyor conduit (10) in the region upstream of as well as downstream of the mouth opening (13) of the connecting conduit (12). For that purpose, provided on the connecting conduit (12) is a slider (24) as a control member which closes off the connecting conduit in a normal position and which is arranged in a flow chamber (22) between first and second sensor conduits (46, 47), each of which opens into the conveyor conduit (10) at the other end, at another side of the connecting conduit (12), and is connected by way of a throttle section (40, 41) to the portion (12.sub.e) of the connecting conduit (12), that goes to the secondary conduit (16). Valves (50, 52) of a particular configuration are provided in the connecting and sensor conduits (12 and 46, 47).

REFERENCES:
patent: 2897005 (1959-07-01), Wiltse
patent: 4002372 (1977-01-01), Edwards et al.
patent: 4389143 (1983-06-01), Nadin et al.
patent: 4715748 (1987-12-01), Krambrock
patent: 4861200 (1989-08-01), Lubrehusen et al.

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