Operating Principle and Functions:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a consistent velocity within the pump housing for suction and exhaust of gas. Two rotors are supported by two bearings and synchronized by a gear, which ensures these two rotors in particular relative positions. They’re near to each other and also to the housing without the need of real contacting, so lubrication is unnecessary from the working housing. The carefully balanced operating parts and large precision bevel wheels ensue the pump be operated stably and continuously beneath the problem of high-pressure distinction. Dynamic seal part use our patent technologies and imported oil 
seals, the vibration quantity of shaft on the shaft seals is controlled to much less than 0.02mm.
A gravity valve is installed in between the suction and exhaust part of the pump. The perform from the gravity valve is as follows, once the strain difference concerning the suction and exhaust component is in excess of the weight on the valve, the valve opens automatically, which makes the pressure distinction often continue to keep inside a fixed controllable worth, the worth could be the allowable highest pressure difference to make sure the pump get the job done commonly and to ensure in fact, the roots vacuum pump with overflow valve is a variety of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has considerably greater velocity at relatively decrease inlet strain and it really is possessed overload self-protective perform. Since it is actually a pump of dry clearance seal building, if a certain pumping speed price and an greatest vacuum need to be obtained, it is required to provide a reduced inlet stress for cutting down the back flow, therefore, a pump need to be backed in use, roots vacuum pump needs to be started out quickly right after its inlet stress reaches a permissible worth for economization.
It is actually permit to pick distinct kinds of pump because the backing pump for factual requirements, such as oil seal pump and liquid ring vacuum pump. When pumping the gasoline containing big level of vapor, the liquid ring vacuum pump will be the perfect backing pump.
