초록 ▼

Quick acting blast aerators having rigid accumulation tanks with internal valve assemblies comprising a tubular body, an end cap teat receives air through an inlet controlled by solenoids, and an internal piston that contacts a valve seat during filling, and retracts to expose exhaust vents upon fir

Quick acting blast aerators having rigid accumulation tanks with internal valve assemblies comprising a tubular body, an end cap teat receives air through an inlet controlled by solenoids, and an internal piston that contacts a valve seat during filling, and retracts to expose exhaust vents upon firing. The valve calp comprises a ring groove and an O-ring check valve. An internal dampening passageway vertically extends through the cap. Internal air passageways extend form the passageway to the air-control groove, admitting air into the tank by dislodging the O-ring. The high temperature piston slides between a tank-fill position bearing against the valve seat and a retracted position exposing the exhaust vents. An internal return spring extends between a deep, annular recess in the piston, and a groove formed in the bottom of the end cap. A dampener projecting from the piston is received within the passageway traversing the end cap.

대표청구항 ▼

[ What is claimed is:] [1.]1. A blast aerator comprising:an air tank adapted to be mounted upon or adjacent a storage bin, hopper or other bulk material container;air inlet means adapted to be alternately connected between high pressure air for filling the tank and low pressure venting for firing th

[ What is claimed is:] [1.]1. A blast aerator comprising:an air tank adapted to be mounted upon or adjacent a storage bin, hopper or other bulk material container;air inlet means adapted to be alternately connected between high pressure air for filling the tank and low pressure venting for firing the aerator;an actuator valve assembly disposed within said tank and connected to said air inlet means, said actuator valve assembly comprising:a rigid, generally tubular body having a pair of spaced apart ends, an interior, and at least one exhaust vent defined in the body;a valve seat coaxially disposed at one end of said body;a valve cap disposed at an opposite end of said body, the valve cap comprising an air control groove, an air control O-ring normally seated within said groove, and vent means connecting said air control groove to said body interior, whereby the air control O-ring functions as a valve to fill the tank;a piston slidably disposed within said body for movement between a sealing, tank filling position engaging said valve seat and a displaced, air discharge position unblocking said at least one exhaust vent; and,a return spring disposed between said piston and said valve cap for yieldably urging said piston towards said valve seat.