Reverse flow pop-off air control

Details Reverse flow pop-off air control Reverse flow pop-off air control

1979-03-12

1984-01-24

Haroian, Harry N.

Fluent material handling, with receiver or receiver coacting mea

Fluent charge impelled or fluid current conveyed into receiver

141119, B65B 104

Patent

active

044270402

ABSTRACT:
A pneumatic valve bag packer provided with an air feed to the hopper that includes an eductor pump having its inlet connected to the hopper so as to produce a subatmospheric pressure in the hopper and consequent reverse air flow in the filling spout when the discharge of the eductor pump is open. The arrangement is such that the closure of the pump discharge by a valve provided for this purpose will result in superatmospheric pressure in the hopper suitable for bag filling. Abrupt opening of the pump discharge causes a vacuum pulse within as well as a sustained low pressure in the hopper so as to promptly stop and prevent material dribble from the filling spout.

REFERENCES:
patent: 2650003 (1953-08-01), Coleman
patent: 3014620 (1961-12-01), Moore
patent: 3072208 (1963-01-01), Titchenal et al.
patent: 3895748 (1975-07-01), Klingenberg
patent: 3900055 (1975-08-01), Henry

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