Working Principle and Capabilities: The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a continual speed within the pump housing for suction and exhaust of gas. Two rotors are supported by two bearings and synchronized by a gear, which assures these two rotors in selected relative positions. They can be close to to each other and also to the housing without the need of actual contacting, so lubrication is needless from the functioning housing. The cautiously balanced working parts and higher precision bevel wheels ensue the pump be operated stably and constantly below the affliction of high-pressure distinction. Dynamic seal element uses our patent technological innovation and imported oil seals, the vibration level of shaft about the shaft seals is managed to significantly less than 0.02mm. A gravity valve is set up involving the suction and exhaust part of the pump. The function from the gravity valve is as follows, when the stress variation in between the suction and exhaust component is more than the bodyweight on the valve, the valve opens automatically, which tends to make the strain difference constantly preserve in a fixed controllable worth, the value is the allowable highest strain difference to be sure the pump operate commonly and to ensure that the truth is, the roots vacuum pump with overflow valve can be a form of overload self-protective pump. Series SYF roots vacuum pump with overflow valve has substantially higher velocity at comparatively reduced inlet stress and it’s possessed overload self-protective perform. As it is really a pump of dry clearance seal development, if a specific pumping speed price 15 and an greatest vacuum need to be obtained, it can be required to supply a reduced inlet stress for reducing the back movement, therefore, a pump need to be backed in use, roots vacuum pump really should be began quickly after its inlet strain reaches a permissible value for economization. It’s allow to select diverse sorts of pump as the backing pump for factual demands, this kind of as oil seal pump and liquid ring vacuum pump. When pumping the gas containing massive quantity of vapor, the liquid ring vacuum pump would be the suitable backing pump.


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