G - Physics – 01 – F
Patent
G - Physics
01
F
251/73
G01F 11/28 (2006.01)
Patent
CA 1126241
A B S T R A C T A knife gate for use in pneumatic conveying equipment and a method and apparatus utilizing the knife gate are the sub- ject of the present invention. The improved knife gate device is constructed utilizing first and second guide plates disposed in spaced apart relationship with a resilient member positioned behind each of the plates. Each plate is characterized by an opening and a planar surface extending on either side of the opening. A reciprocating gate means is disposed between the plates and places the yieldable means under compression. The gate means has an opening and a planar surface extending on at least one side of the opening. The gate means is movable between an open position wherein all of the openings are aligned and a closed position wherein the planar surface of the gate means moves past the openings in the guide plates to close the latter. The invention also encompasses a flow controls appara- tus and method wherein two of the aforedescribed knife gate devices are positioned in spaced apart relationship with first and second holding areas located between the two knife gates. In this embodiment, the gate means and corresponding guide plates are each provided with dual openings for alignment with the res- pective holding areas. Means is provided for moving the gate means in alternating relationship so that when one of the openings in one of the gate means is in communication with one of the holding areas, the opposite opening in the other of the gate means is in communication with the other of the holding areas.
351958
Salina Vortex Conveyor Corporation
Smart & Biggar
LandOfFree
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