VACUUM GUIDED-VANE ROTARY PUMP Russian patent published in 2002 - IPC

FIELD: food industry. SUBSTANCE: pump has cylindrical housing with end face covers and rotor with guide vanes fitted on shaft eccentrically relative to housing. Guide vanes are fitted in radial slots of rotor. Water is used as working liquid. All clearances in pump joints are sealed by water during operating cycle. Two relatively perpendicular interconnected spaces are made inside pump is one of pump covers to provide continuous delivery of fresh water from water source and circulation of water inside pump during its operation. One of spaces is square to axis of rotation of rotor and is placed in communication with one of ring end face grooves of rotor and radial slots of rotor by bypass channel. Adjusting screw is installed in first space, and end of water supply nipple, in second space. Use of water as working liquid makes it possible to seal clearances in pump joints from inside. Layer of water on inner surfaces is very thin, and displacement of water to outlet branch pipe does not require heavy efforts, i.e. consumption of power is insignificant. EFFECT: reduced power consumption. 2 dwg