Working Principle and Options:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a continual velocity inside the pump housing for suction and exhaust of gas. Two rotors are supported by two bearings and synchronized by a gear, which guarantees these two rotors in certain relative positions. They may be near to one another and to the housing without having real contacting, so lubrication is needless within the operating housing. The very carefully balanced working parts and substantial precision bevel wheels ensue the pump be operated stably and constantly beneath the situation of high-pressure distinction. Dynamic seal portion use our patent technological innovation and imported oil seals, the vibration level of shaft around the shaft seals is controlled to less than 0.02mm.
A gravity valve is installed in between the suction and exhaust a part of the pump. The function from the gravity valve is as follows, once the pressure difference among the suction and exhaust part is over the weight on the valve, the valve opens automatically, which helps make the stress distinction always preserve inside a fixed controllable value, the value would be the allowable highest pressure difference to guarantee the pump do the job generally and in order that in actual fact, the roots vacuum pump with overflow valve is actually a form of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has substantially increased speed at comparatively lower inlet pressure and it is possessed overload self-protective function. Since it is often a pump of dry clearance seal building, if a specific pumping velocity charge and an greatest vacuum have to be obtained, it’s needed to provide a decrease inlet stress for reducing the back movement, hence, a pump have to be backed in use, roots vacuum pump must be started soon just after its inlet stress reaches a permissible value for economization.
It really is permit to pick various kinds of pump as the backing pump for factual prerequisites, such as oil seal pump and liquid ring vacuum pump. When pumping the gas containing huge quantity of vapor, the liquid ring vacuum pump would be the best backing pump.