Working Principle and Options:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a frequent velocity inside the pump housing for suction and exhaust of gasoline. Two rotors are supported by two bearings and synchronized by a gear, which assures these two rotors in particular relative positions. They can be close to to each other and also to the housing without the need of real contacting, so lubrication is unnecessary while in the operating housing. The carefully balanced working elements and high precision bevel wheels ensue the pump be operated stably and constantly underneath the condition of high-pressure difference. 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 set up concerning the suction and exhaust part of the pump. The perform in the gravity valve is as follows, once the pressure big difference concerning the suction and exhaust aspect is over the fat from the valve, the valve opens instantly, which makes the pressure difference often retain in a fixed controllable value, the value may be the allowable highest strain variation to make sure the pump perform ordinarily and so that in reality, the roots vacuum pump with overflow valve can be a sort of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has substantially increased velocity at rather lower inlet strain and it is actually possessed overload self-protective function. Because it is usually a pump of dry clearance seal development, if a certain pumping velocity fee and an greatest vacuum have to be obtained, it is actually required to supply a lower inlet strain for decreasing the back flow, hence, a pump must be backed in use, roots vacuum pump needs to be started soon immediately after its inlet strain reaches a permissible value for economization.
It really is allow to select diverse kinds of pump since the backing pump for factual requirements, such as oil seal pump and liquid ring vacuum pump. When pumping the gas containing significant volume of vapor, the liquid ring vacuum pump will be the ideal backing pump.