| 摘要 |
A portable car wash system that uses water efficiently to wash cars in a parking lot is provided. A push cart (20) is mounted on wheels (22) and contains a water supply tank (42), an engine (40), and low- and high-pressure pumps (50 and 52). The engine drives the pumps. The low-pressure pump pumps water out of the tank and the high-pressure pump boosts the pressure of the water. The high-pressure water is delivered to a wand (12) via a hose (16) attached to a hose reel (48). The wand includes a positionable head (13) that can be aimed to direct a high-pressure spray (224) from a nozzle (208) to the car being washed. A spray shield (210) reduces overspray from the nozzle. A locking member (204) holds the head in a desired position. A washing tool (14) having a sponge (234) and cover (236) is used by an operator (18) to hand wash the car. A soap injection system (46) injects soap into the water by conventional venturi action when selected by the operator. The system is small enough to not disrupt traffic in the parking lot, can be used to wash a parked car without spraying adjacent cars, and uses only four to six gallons of water to wash a car.
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