Duct and flop-gate construction and method of handling dust or other particulate material
OwnerMark Gozion, H. Mark Hallinventors
Life of this patent
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Abstract
A duct and flop-gate construction for handling particulate material and a method of handling dust or other particulate material. The collected material drops down a duct which contains a flop-gate for directing the material to either of two bins. A mild current of air is drawn upwardly through the duct and flop-gate counter to the movement of the material to subject the bins to negative pressure and prevent outward leakage. The same duct serves both to carry material downwardly to the bins and as a means for applying negative pressure to the bins.
Claims3
In a system in which a dust-particulate mixture is filtered in a bag house, or the like, and the separated particulate material is conducted for discharge alternately to each one of a pair of receptacles, said system including duct means extending between the discharge side of said bag house and said receptacles and containing a bifurcate portion having a pair of branches each of which is connected with the inlet to one of said receptacles, fan means for inducing an air flow through said duct means counter to the direction of particulate flow therethrough for partially evacuating said system, and means for directing particle flow alternately to the respective ones of said receptacles without disrupting the partial evacuation of air therefrom, comprising:
- (a) a flop-gate having a frame, a plurality of mutually spaced baffles carried by said frame, said baffles being of a length to traverse the width of the interior of the respective duct branches and each having a pair of particle-deflecting surfaces divergent in the direction of flow of particulate material through said duct,
- (b) a shaft connecting said frame to the juncture of said branches in said duct means for pivotal movement between each of said branches, and
- (c) plate means mounted on said shaft for pivotal movement with respect to said duct means and effective to restrict the flow area of the other of said branches traversed by said frame.
Dependencies are inferred from the claim text.