Inventors:
Edward T. Maas - Poynette WI, US
Paul A. Beres - Waukesha WI, US
Kevin A. Hellenbrand - Mukwonago WI, US
William M. Kavey - Sun Prairie WI, US
Daniel A. Klein - Middleton WI, US
Assignee:
Hellenbrand, Inc. - Waunakee WI
International Classification:
B01D 21/30
US Classification:
210136, 210278, 210138, 2101981, 210205, 210209, 210220, 210418, 137488, 137511, 13762413, 137625
Abstract:
Contaminants are removed from fluid in a system where the fluid is sprayed into an air head at the top of a tank through a diffuser and withdrawn through a pick-up tube. A solenoid valve operates to allow oxygen-containing gas from a compressed gas source to flow into the tank through a shuttle valve, which is opened by the gas pressure. Simultaneously, a drain valve connected to the shuttle valve opens a drain, venting water and air from the tank. The solenoid valve also operates to close the gas supply line and connect the shuttle valve through a vent to atmosphere. Pressure within the tank closes the shuttle valve, which in turn closes the drain valve and disconnects the shuttle valve from the tank. A one-way-flow valve prevents fluid or gas from flowing from the tank backwards through the shuttle valve to the solenoid valve and out the vent.