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 pace within 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. They’re close to 
to each other and to the housing without the need of actual contacting, so lubrication is needless while in the doing work housing. The cautiously balanced working components and substantial precision bevel wheels ensue the pump be operated stably and constantly under the ailment of high-pressure distinction. Dynamic seal portion use our patent engineering and imported oil seals, the vibration amount of shaft over the shaft seals is managed to less than 0.02mm.
A gravity valve is put in concerning the suction and exhaust part of the pump. The function with the gravity valve is as follows, when the strain big difference between the suction and exhaust element is more than the weight with the valve, the valve opens automatically, which helps make the strain distinction generally keep in the fixed controllable value, the value would be the allowable highest pressure big difference to make sure the pump function generally and to ensure in fact, the roots vacuum pump with overflow valve can be a type of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has considerably increased velocity at comparatively reduce inlet pressure and it really is possessed overload self-protective perform. As it can be a pump of dry clearance seal construction, if a certain pumping speed price and an ultimate vacuum should be obtained, it is actually necessary to provide a decrease inlet strain for decreasing the back flow, as a result, a pump should be backed in use, roots vacuum pump really should be begun quickly soon after its inlet pressure reaches a permissible value for economization.
It truly is permit to select diverse sorts of pump as the backing pump for factual needs, this kind of as oil seal pump and liquid ring vacuum pump. When pumping the fuel containing huge level of vapor, the liquid ring vacuum pump could be the best backing pump.
