Pneumatic suction devices

Details Pneumatic suction devices Pneumatic suction devices

1981-09-25

1983-11-08

Kashnikow, Andres

Conveyors: fluid current

Intake to fluid current conveyor

Upstream of suction source

366191, 366300, B65G 5342

Patent

active

044139330

ABSTRACT:
This invention relates to pneumatic suction devices for removing slowly movable material from enclosed storage spaces, of the kind in which a suction pipe secured to a pivotable arm and having a supply of air arranged to be fed to a suction aperture thereof, is provided with peripherally distributed driven tools for loosening the material. According to the invention, at least three axially parallel drivable spindles are distributed around the end of the suction pipe, the spindles carrying, at least at the lower end thereof, tools for loosening the material and conveying it to the suction aperture and the suction pipe. Adjacent ones of the spindles are preferably rotatable in opposite directions, but at least two adjacent spindles out of an odd number of the spindles are rotatable in the same direction. The tools may include strip-shaped radial vane surfaces with bent-over ends substantially parallel to the spindles and arranged at an angle to the direction of rotation.

REFERENCES:
patent: 3876258 (1975-04-01), Abderhalden
patent: 4140350 (1979-02-01), Bentzen-Bilkuist et al.

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