Ejector nozzle with pressure differential

Details Ejector nozzle with pressure differential Ejector nozzle with pressure differential

1990-03-09

1991-03-19

Song, Robert R.

Classifying, separating, and assorting solids

Sorting special items, and certain methods and apparatus for...

Condition responsive means controls separating means

209581, 209638, 209644, B07C 500

Patent

active

050003240

ABSTRACT:
A sorting machine for separating substandard items from a continuous flow of fungible items is disclosed wherein the ejector means for removing the detected substandard items includes an air blast nozzle having a built-in end means for creating a pressure differential in the blast to keep particle dust from rising and quickly causing the optical window in front of the detector sensor or sensors to coat and become opaque. The pressure means is preferably a tab or other surface at a right angle to the nozzle or parallel to the product flow, its direction being on the opposite side of the nozzle from the window. By minimizing dust build-up on the window, down time of the sorting machine for window cleaning is minimized.

REFERENCES:
patent: 4371081 (1983-02-01), Satake
patent: 4426005 (1984-01-01), Satake
patent: 4624368 (1986-11-01), Satake
patent: 4699274 (1987-10-01), Saika

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