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December 8, 2020

Working Principle and Characteristics:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a constant velocity inside the pump housing for suction and exhaust of fuel. Two rotors are supported by two bearings and synchronized by a gear, which assures these two rotors in specific relative positions. They are really near to one another and to the housing without having real contacting, so lubrication is unnecessary from the functioning housing. The very carefully balanced working parts and higher precision bevel wheels ensue the pump be operated stably and constantly below the issue of high-pressure difference. Dynamic seal part use our patent engineering and imported oil seals, the vibration level of shaft around the shaft seals is managed to significantly less than 0.02mm.
A gravity valve is put in involving the suction and exhaust part of the pump. The function in the gravity valve is as follows, when the stress variation between the suction and exhaust component is in excess of the weight of the valve, the valve opens immediately, which tends to make the stress distinction normally keep in the fixed controllable worth, the value may be the allowable highest strain distinction to make certain the pump get the job done generally and to ensure that the truth is, the roots vacuum pump with overflow valve is a kind of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has considerably larger velocity at comparatively decrease inlet stress and it is actually possessed overload self-protective function. As it is really a pump of dry clearance seal building, if a particular pumping velocity price and an greatest vacuum must be obtained, it can be important to provide a lower inlet stress for minimizing the back movement, thus, a pump needs to be backed in use, roots vacuum pump needs to be started out quickly just after its inlet stress reaches a permissible worth for economization.
It is permit to select diverse types of pump because the backing pump for factual demands, this kind of as oil seal pump and liquid ring vacuum pump. When pumping the gas containing huge level of vapor, the liquid ring vacuum pump is definitely the best backing pump.