Patent ID: 8529677
Filing Date: 2013-09-10
Classification: B01D,B67D

Abstract:
1. A device for cleansing hydrocarbon vapors and other contaminants comprising: a casing containing a hydrocarbon adsorption substance therein, having a screened bottom and an opposite screened top, said bottom receiving hydrocarbon vapors from a hydrocarbon source; a weight actuated valve locating beneath said casing, said valve closing when said casing attains a predetermined weight including hydrocarbons; an assembly locating opposite said weight actuated valve and in fluid communication with said casing, said assembly drawing air into said casing when the hydrocarbon source has attained a low pressure of approximately −1.5 inches of water; a secondary purge valve locating proximate said weight actuated valve, said secondary purge valve opening upon detecting pressure in the hydrocarbon source below approximately −1.75 inches of water when said weight actuated valve has closed, then said secondary purge valve admitting air into said casing, said secondary purge valve returning purged hydrocarbon vapors from said hydrocarbon adsorption substance through said weight actuated valve into said hydrocarbon source, and said weight actuated valve reopening upon said casing falling below the predetermined weight; and, a canister containing said casing, said weight actuated valve, and said assembly, said canister being in fluid communication with said hydrocarbon source and allowing said assembly fluid communication to the atmosphere; wherein the inflow of air through said canister into said casing purges the hydrocarbon adsorption substance of hydrocarbons and the outflow of air from said casing through said canister draws vapors from the hydrocarbon source through said casing for adsorption by the hydrocarbon adsorption substance; wherein said weight actuated valve signals said assembly to control release of hydrocarbon vapors and intake of air using pressure; and, wherein the repetitive inflow of air through said casing regenerates the hydrocarbon adsorption substance; and further including a valve test assembly for testing operation of the weight actuated valve, including a weight hanger extending below said canister and operatively connected to said weight actuated valve to effect closing thereof when sufficient weight is added to said weight hanger; wherein a user can add weights to said hanger to manually verify operability of said weight actuated valve.