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December 8, 2020

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 specific relative positions. These are near to each other and also to the housing without having real contacting, so lubrication is needless within the functioning 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 big difference. Dynamic seal portion use our patent technological innovation and imported oil seals, the vibration level of shaft around the shaft seals is controlled to much less than 0.02mm.
A gravity valve is set up amongst 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 element is more than the excess weight with the valve, the valve opens automatically, which can make the stress distinction often retain inside a fixed controllable value, the worth would be the allowable highest pressure big difference to ensure the pump work 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 somewhat reduce inlet stress and it really is possessed overload self-protective perform. Since it is often a pump of dry clearance seal building, if a specific pumping velocity fee and an greatest vacuum have to be obtained, it truly is needed to provide a decrease inlet stress for decreasing 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 worth for economization.
It truly is permit to pick various sorts of pump because the backing pump for factual prerequisites, such as oil seal pump and liquid ring vacuum pump. When pumping the gasoline containing substantial quantity of vapor, the liquid ring vacuum pump would be the best backing pump.