Patent ID: 6123509
Filing Date: 2000-09-26
Classification: F04B,Y10T

Abstract:
A pressure valve device for a cleaning apparatus comprising:a water supply system;a pump motor;a micro switch electrically connected to the pump motor;a booster pump powered by the pump motor, the booster pump in communication with the water supply system;a cleaning injector in communication with the water supply system;a check valve arranged between the booster pump and the cleaning injector along the water supply system;a pressure valve in communication with the water supply system via pipings (A, B,C), the pressure valve including a valve chamber at a first end, a pumping section at a second end, a transition section arranged between and in communication with the valve chamber and the small pumping section, the transition section displacing a smaller volume than displacement volumes of either the valve chamber or the small pumping section;a floating valve rod housed in the pumping section and having a push rod that extends into the transition section, a valve stem that extends out of the pumping section, an intermediate segment having a reduced diameter;the piping (A) connected to the water supply system ahead of the booster pump and in communication with the valve chamber, the piping (C) connected to the water supply system between the booster pump and the check valve and in communication with the transition section and the push rod of the floating valve rod, the piping (B) connected to the water supply system between the check valve and the cleaning injector and in communication with the pumping section and the intermediate segment of the floating valve rod;a valve plunger head having a through bore arranged to slidably receive the valve stem of the floating valve rod, the valve plunger head secured at the second end of the pressure valve;a ball valve positioned in the valve chamber and having an adjusting bore extending there through to avoid direct communication with the transition section when the ball valve abuts against the transition section;a compression spring positioned between and contacting a spring base and the ball valve within the valve chamber; anda retaining plate configured to close the first end of the pressure valve.