Working Principle and Characteristics:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a consistent speed inside the pump housing for suction and exhaust of gasoline. Two rotors are supported by two bearings and synchronized by a gear, which ensures these two rotors in particular relative positions. They’re close to to each other and also to the housing with no actual contacting, so lubrication is pointless within the doing work housing. The very carefully balanced working elements and large precision bevel wheels ensue the pump be operated stably and constantly underneath the affliction of high-pressure distinction. Dynamic seal portion use our patent technology and imported oil seals, the vibration amount of shaft to the shaft seals is managed to less than 0.02mm.
A gravity valve is put in between the suction and exhaust a part of the pump. The function in the gravity valve is as follows, once the stress big difference amongst the suction and exhaust aspect is above the weight with the valve, the valve opens instantly, which makes the strain difference constantly continue to keep in the fixed controllable value, the value would be the allowable highest stress difference to ensure the pump get the job done ordinarily and to ensure that in reality, the roots vacuum pump with overflow valve is really a form of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has considerably larger velocity at somewhat reduced inlet stress and it can be possessed overload self-protective function. Since it can be a pump of dry clearance seal development, if a specific pumping velocity charge and an ultimate vacuum must be obtained, it’s essential to provide a reduced inlet pressure for cutting down the back movement, hence, a pump must be backed in use, roots vacuum pump really should be started off quickly soon after its inlet 
pressure reaches a permissible value for economization.
It really is permit to select different sorts of pump since the backing pump for factual requirements, this kind of as oil seal pump and liquid ring vacuum pump. When pumping the fuel containing massive amount of vapor, the liquid ring vacuum pump is definitely the best backing pump.
