System and method for reducing water usage of hand wash station

Abstract

A system for reducing water usage of hand wash station includes a Venturi nozzle contained within a faucet, an air self-closing valve connected to both Venturi nozzle and a first 1-way valve, a bellow pump connected to both the first 1-way valve and a second 1-way valve. A spring or multiple springs are attached to the bellow pump. A solid plate attached on the top of the bellow pump for user standing during hands washing, the weight of the user on the bellow pump pushing air to the Venturi nozzle. A water spring return valve connected to both Venturi nozzle and a fresh water tank, the water spring return valve using to turn off water, allowing only air blow out of the Venturi nozzle for hand drying.

What is claimed is: 
     
         1 . A system for reducing water usage of hand wash station, the system comprising:
 a Venturi nozzle contained within a faucet; wherein the Venturi nozzle connected to an air tubing and a water tubing;   an air self-closing valve connected to both said Venturi nozzle and a first 1-way valve with the air tubing;   a bellow pump connected to both said first 1-way valve and a second 1-way valve, wherein the first 1-way valve allowing air to said Venturi nozzle and the second 1-way valve allowing air to said bellow pump, one end of the second 1-way valve opening to ambient air;   a spring or multiple springs attached to said bellow pump;   a solid plate attached on the top of said bellow pump for user standing during hands washing, the weight of the user on the bellow pump pushing air to the said Venturi nozzle;   a water spring return valve connected to both said Venturi nozzle and a fresh water tank with water tubing, the water spring return valve using to turn off water, allowing only air blow out of said Venturi nozzle for hand drying;   a sink;   a waste water tank connected to the said sink;   a soap dispenser.   
     
     
         2 . The system of  claim 1 , wherein the Venturi nozzle is built in the faucet. 
     
     
         3 . The system of  claim 1 , further comprising multiple locked wheels using as a portable hand wash station. 
     
     
         4 . The system of  claim 1 , further comprising a child step. 
     
     
         5 . The system of  claim 1 , wherein the air self-closing valve connected to the said Venturi nozzle has fine adjustment for controlling the speed of air blowing, so controlling the amount of water spraying out of Venturi nozzle. 
     
     
         6 . A system for reducing water usage of hand wash station, the system comprising:
 a Venturi nozzle contained within a faucet; wherein the Venturi nozzle connected to an air tubing and a water tubing;   
       a water self-closing valve connected to both said Venturi nozzle and a fresh water tank; 
       an air foot pump connected to both said Venturi and a first 1-way valve;
 a second 1-way valve connected to the said air foot pump, wherein the first 1-way valve allowing air to said Venturi nozzle and the second 1-way valve allowing air to said air foot pump, one end of the second 1-way valve opening to ambient air; 
 a sink; 
 a waste water tank connected to the said sink; 
 a soap dispenser. 
 
     
     
         7 . The system of  claim 6 , wherein the Venturi nozzle is built in the faucet. 
     
     
         8 . The system of  claim 6 , further comprising multiple locked wheels using as a portable hand wash station. 
     
     
         9 . The system  6 , further comprising a child step. 
     
     
         10 . The system of  claim 6 , wherein the water self-closing valve connected to said Venturi nozzle has fine adjustment for controlling the amount of water spraying. 
     
     
         11 . A method for reducing water usage of hand wash station using Venturi nozzle, said method comprising:
 (a) pumping air into a Venturi nozzle;   
       the said venture nozzle contained within a faucet, wherein the Venturi nozzle connected to a fresh water tank;
 (b) the high speed air through the said Venturi nozzle reducing its pressure, sucking water from the fresh water tank and spraying mix out of the faucet for hand washing; 
 
     
     
         12 . The method of  claim 12 , wherein the air pump operating by the weight of the user. 
     
     
         13 . The method of  claim 13 , wherein the air pump is a bellow pump, the user standing on the top of the bellow to pump air through the Venturi nozzle. 
     
     
         14 . The method of  claim 12 , wherein the air pump is an air foot pump, the user using her/his foot to pump air through Venturi nozzle. 
     
     
         15 . The method of  claim 13 , further comprising an air self-closing valve connected to both Venturi nozzle and the air pump. 
     
     
         16 . The method of  claim 13 , further comprising a water spring return valve connected to both said Venturi nozzle and a fresh water tank with water tubing, the water spring return valve using to turn off water, allowing only air blow out of said Venturi nozzle for hand drying. 
     
     
         17 . The method of  claim 14 , further comprising a water self-closing valve connected to both said Venturi nozzle and a fresh water tank.