AUTOMATIC LIQUID INVENTORY COLLECTING AND DISPENSING UNIT

摘要

This invention provides means for automatically collecting waste liquids and for simultaneously feeding these liquids into water recovery processes. The invention includes first and second tanks with first and second two-way solenoid valves associated with each of the tanks. The first solenoid valve is connected to the liquid source and its associated tank so as to allow liquid to flow into the tank when the valve is in its normal position and to allow the liquid to flow out of the tank when the valve is in its actuated position. The second valve is connected to its associated tank and a gas supply so as to allow gas inside the tank to flow out when the valve is in its normal position and to allow gas to flow from the gas supply into the tank when the valve is in its actuated position. Control circuit means are included for actuating the two valves associated with the first tank and not actuating the valves associated with the second tank when both said first tank is filled and said second tank is emptied and for not actuating the two valves associated with said first tank and for actuating the two valves associated with said second tank when both said first tank is emptied and said second tank is filled, whereby both tanks are alternately filled and emptied. The invention also includes means for indicating which tank is being filled and which tank is being emptied, means for indicating the liquid level in each of the tanks, means for counting the number of times the first and second tanks are filled and means for making the invention operable in a near-zero gravity environment.