GB190827674A - Improvements in Suction-nozzles for Pneumatic Conveyors. - Google Patents

Abstract

27,674. Rede, J. van. Dec. 19. Conveyers.-The current of air drawn in through the suction nozzle of a pneumatic conveyer is divided into two parts, one part being employed to draw the grain into the nozzle, and the other part being led beneath the incoming stream of grain. On the end of the suction tube 3 are mounted concentric cylinders 1, 2, which are adjusted in position by a screw 11 and a nut 12. The cylinder 1 is contracted at the lower end to meet the cylinder 2. Apertures 4 are formed at intervals in the cylinder 1 opposite apertures 17 in the cylinder 2, by which apertures the grain passes into the suction tube 3. Rectangular holes 13 are also formed in the cylinder 2 between the apertures 17. Two sets of air-inlet hole, 5, 6 are formed in the cylinder 1 at the upper end, the size of which can be regulated by a cover 7 having holes 9, 10. The annular space between the cylinders 1, 2 is divided by radial plates 19 in such a manner that the air admitted by the holes 5 passes into the tube 3 through the aperture 17, and that admitted by the holes 6 through the openings 13. The size of the apertures 13, 17 is regulated by a cover 14 attached to a screwed rod and adjusted by a nut 16. With oats and other kinds of grain which offer resistance to the descent of the nozzle by its own weight, the lower end of the cylinder 1 is not tapered off and is quite open at the bottom. The slide 14 is then dispensed with, and the regulation of the streams of air through the apertures 13, 17 is effected by independent covers for the holes 5, 6.