Pneumatic outlet valve

Details Pneumatic outlet valve Pneumatic outlet valve

B - Operations, Transporting

61

D

302/29, 105/123.

B61D 7/00 (2006.01) B61D 7/08 (2006.01)

Patent

CA 1165793

Case 642 ABSTRACT OF THE DISCLOSURE A pneumatic outlet is provided including a rotatable control valve having a body portion and a moment portion extending therefrom. The moment portion and the body portion each include edge portions which in closed position engage adjacent valve seats. The moment portion is provided with a pattern of openings for metering flow of lading into the discharge tube and is arranged to reduce or eliminate pellets from becoming trapped in the valve opening. Pre- ferably the pattern includes alternate tapered projections and recesses. The tapered projections are arranged to guide pellets away from the valve opening. In addition, the projections preferably include sharp edges which will shear any pellets which are trapped in the recess, thus avoiding jamming the control valve. Preferably also the body portion edge includes a similar pattern.

388141

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