Working Principle and Options:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a consistent speed within 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 sure relative positions. These are near to each other and also to the housing without actual contacting, so lubrication is needless during the functioning housing. The cautiously balanced working components and large precision bevel wheels ensue the pump be operated stably and constantly beneath the ailment of high-pressure big difference. Dynamic seal portion use our patent technology and imported oil seals, the vibration volume of shaft over the shaft seals is managed to less than 0.02mm.
A gravity valve is installed among the suction and exhaust a part of the pump. The function in the gravity valve is as follows, when the stress big difference concerning the suction and exhaust element is more than the bodyweight with the valve, the valve opens instantly, which tends to make the stress variation usually retain within a fixed controllable value, the worth is the allowable highest pressure difference to make sure the pump do the job commonly and to ensure the truth is, the roots vacuum pump with overflow valve is often a variety of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has substantially higher speed at relatively reduced inlet strain and it can be possessed overload self-protective function. Because it is a pump of dry clearance seal building, if a certain pumping speed price and an greatest vacuum should be obtained, it’s important to provide a lower inlet stress for minimizing the back flow, thus, a pump must be backed in use, roots vacuum pump need to be begun soon just after its inlet pressure reaches a permissible value for economization.
It really is permit to pick various types of pump 
because the backing pump for factual needs, this kind of as oil seal pump and liquid ring vacuum pump. When pumping the gas containing big level of vapor, the liquid ring vacuum pump may be the excellent backing pump.
