Root Vacuum Pumps

Working Principle and Attributes:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a continual speed 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 can be close to to one another and also to the housing with out real contacting, so lubrication is unnecessary inside the working housing. The carefully balanced working parts and high precision bevel wheels ensue the pump be operated stably and constantly below the issue of high-pressure big difference. Dynamic seal portion use our patent technological innovation and imported oil seals, the vibration amount of shaft around the shaft seals is managed to much less than 0.02mm.
A gravity valve is put in in between the suction and exhaust a part of the pump. The function with the gravity valve is as follows, when the stress variation between the suction and exhaust aspect is more than the excess weight in the valve, the valve opens automatically, which tends to make the pressure difference always retain in a fixed controllable worth, the value may be the allowable highest stress difference to be sure the pump function ordinarily and in order that in reality, the roots vacuum pump with overflow valve is really a variety of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has substantially greater pace at somewhat reduce inlet stress and it’s possessed overload self-protective perform. Since it is usually a pump of dry clearance seal construction, if a particular pumping speed price and an ultimate vacuum need to be obtained, it truly is required to supply a reduce inlet stress for lowering the back movement, as a result, a pump needs to be backed in use, roots vacuum pump should be begun soon following its inlet stress reaches a permissible worth for economization.
It is actually permit to select various varieties of pump as the backing pump for factual needs, this kind of as oil seal pump and liquid ring vacuum pump. When pumping the gas containing large volume of vapor, the liquid ring vacuum pump may be the excellent backing pump.


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