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December 8, 2020

Working Principle and Capabilities:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a consistent velocity inside the pump housing for suction and exhaust of gasoline. Two rotors are supported by two bearings and synchronized by a gear, which guarantees these two rotors in particular relative positions. They may be near to each other and also to the housing without the need of real contacting, so lubrication is unnecessary inside the operating housing. The carefully balanced working elements and high precision bevel wheels ensue the pump be operated stably and constantly beneath the condition of high-pressure variation. Dynamic seal portion use our patent technological innovation and imported oil seals, the vibration quantity of shaft within the shaft seals is managed to less than 0.02mm.
A gravity valve is installed concerning the suction and exhaust part of the pump. The perform from the gravity valve is as follows, once the pressure big difference concerning the suction and exhaust portion is over the fat from the valve, the valve opens instantly, which makes the pressure difference often retain in the fixed controllable value, the value will be the allowable highest strain big difference to make sure the pump function ordinarily and so that in reality, the roots vacuum pump with overflow valve can be a type of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has considerably increased velocity at rather decrease inlet stress and it can be possessed overload self-protective perform. Because it is often a pump of dry clearance seal development, if a certain pumping velocity fee and an greatest vacuum need to be obtained, it can be essential to supply a decrease inlet strain for reducing the back movement, thus, a pump must be backed in use, roots vacuum pump ought to be begun quickly immediately after its inlet strain reaches a permissible value for economization.
It really is allow to select diverse kinds of pump because the backing pump for factual prerequisites, such as oil seal pump and liquid ring vacuum pump. When pumping the fuel containing significant volume of vapor, the liquid ring vacuum pump is the ideal backing pump.