초록 ▼

A high pressure hot water acid washer is towed to a site on a trailer. A chemical tank and gasoline and diesel fuel tanks are filled. A water supply hose is connected to a water tank. A power cord is connected to a power source. A float valve controls the filling of the water tank. Water flows from

A high pressure hot water acid washer is towed to a site on a trailer. A chemical tank and gasoline and diesel fuel tanks are filled. A water supply hose is connected to a water tank. A power cord is connected to a power source. A float valve controls the filling of the water tank. Water flows from the water tank through a Y-type filter to a water pump. A drain withdraws water directly from the water pump. The water pump and a compressor are driven with an engine. Pressurized water flows through a flow switch to a heat exchanger. Upon water flow, the flow switch completes a power circuit to operate a fuel pump with an electric motor. Fuel is pumped from the fuel tank and is atomized and sprayed into the heat exchanger. An ignition coil ignites the fuel. The power circuit is interrupted upon sensing a high temperature in a pressurized water delivery line from the heat exchanger. Pressure of pressurized hot water in the delivery line is controlled with a hot water pressure relief valve. Hot water flows out through a high pressure hot water hose and nozzle. The chemical tank is pressurized with air from the compressor, and chemical flows from the chemical tank. Rate of flow of chemical is controlled with a needle valve. Opening the chemical line with ball valve releases chemical to the fast hot water stream from the nozzle.

대표청구항 ▼

A high pressure hot water acid injection washer, comprising an engine, a water pump connected to the engine, a compressor connected to the engine, a water intake connected to the pump, a water filter connected to the intake, a water supply connected to the filter for supplying water through the filt

A high pressure hot water acid injection washer, comprising an engine, a water pump connected to the engine, a compressor connected to the engine, a water intake connected to the pump, a water filter connected to the intake, a water supply connected to the filter for supplying water through the filter to the pump, a drain connected to the pump for draining water from the pump, a pressurized water flow line connected to the pump, a bypass connected to the flow line and connected to the water supply for returning water from the pump to the water supply, a flow switch connected to the flow line for sensing flow of water in the flow line, a heat exchanger connected to the flow line for receiving water flowing through the pressurized water flow line and the flow switch, a fuel source, a fuel pump and a burner connected to the fuel source and connected to the flow switch for operating the pump and burner when the flow switch senses flow of water to the heat exchanger, a high pressure hot water delivery line connected to the heat exchanger, a temperature control connected to the delivery line and connected to the fuel pump and burner for permitting operation of the pump and burner until a predetermined high temperature is sensed in the delivery line, a hot water pressure relief valve connected to the high pressure hot water delivery line, a high pressure hot water delivery hose connected to the delivery line, a nozzle connected to the hot water hose for releasing a hot water stream, wherein the hot water pressure relief valve is provided for releasing water above a predetermined pressure in the hot water delivery line before reaching the water delivery hose, wherein the filter is provided for supplying clean water to the pump, and wherein the flow switch is provided for permitting operation of the fuel pump and burner only when water is flowing from the pump to the heat exchanger.