The Young Industries, Inc.

Kennedy Van Saup Corporation

John R Havrilla

Robert D Heyl

A bulk material conveying system includes a closed chamber having an inlet and an outlet and a conveyor communicating with the chamber outlet for receiving bulk material from the chamber. A pressurized gas is supplied to the upper portion of the chamber and to the conveyor to provide a pressure differential in the chamber which causes the bulk material in the chamber to flow through the outlet and conveyed through the conveyor. A pressure regulator is provided for automatically maintaining the pressure in the upper portion of the chamber at a predetermined value not to exceed a pressure sufficient to maintain the pressure differential during normal material flow rate conditions.

Apparatus and method for pneumatically conveying bulk materials

An aeration separator for separating lighter and heavier materials in a separation chamber in which the material flows through a downwardly sloping passage in the lower region of the separation chamber toward a lower discharge while air flows upwardly through the material to aerate and agitate it to separate the lighter particles and direct them to an upper discharge.

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Danville, PA, United States of America

John R Havrilla