Pneumatic transfer device for granular material

Abstract

Abstract PURPOSE:To eliminate a pressure tank, by opening two air supply nozzles, respectively at two positions, to a vent pipe which is coupled with the lower supply port of a granular material feeder, so that air is fed alternately from the nozzles, intermittently at predetermined intervals. CONSTITUTION:Granular material reserved in a hopper 1 is continuously and volumetrically dropped and fed into a short pipe 3 and a bent pipe 4 by means of a feeder 2. At this stage, a solenoid valve 10 is opened while solenoid valve 11 is closed to accumulate the granular material on one side in the short pipe 3, remote from a nozzle 6 and is compressed by means of air pressure fed from the nozzle 6. Further, the material is forced to be fed into the thin pipe section formed in a horizontal lower part 4b of a vent pipe 4 after it is accumulated in the section from the curved part and the part in the vicinity of the horizontal lower part 4b. When the solenoid valve 10 is opened while the solenoid valve 11 is closed, the granular material in the thin pipe part is compressed by means of air pressure and is forced to be pushed into a transfer pipe 5 from the thin pipe part to form a single plug P. With this arrangement, a pressure tank may be eliminated so that it is attainable to enhance the simplification of its structure and the controllability of the pneumatic transfer device.

Inventors

• 👤 Takashi Yamamoto
• 👤 孝 山本

Bibliographic Details