Working Principle and Options: The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a frequent velocity inside the pump housing for suction and exhaust of fuel. Two rotors are supported by two bearings and synchronized by a gear, which guarantees these two rotors in selected relative positions. They may be close to to each other and also to the housing without the need of actual contacting, so lubrication is needless inside the functioning housing. The very carefully balanced operating elements and substantial precision bevel wheels ensue the pump be operated stably and continuously underneath the ailment of high-pressure difference. Dynamic seal component employs our patent technology and imported oil seals, the vibration volume of shaft about the shaft seals is controlled to much less than 0.02mm. A gravity valve is set up between the suction and exhaust a part of the pump. The perform with the gravity valve is as follows, once the pressure variation between the suction and exhaust aspect is over the weight on the valve, the valve opens automatically, which helps make the stress distinction constantly continue to keep in a fixed controllable worth, the value may be the allowable highest strain variation to make certain the pump perform normally and to ensure that the truth is, the roots vacuum pump with overflow valve is often a sort of overload self-protective pump. Series SYF roots vacuum pump with overflow valve has substantially greater speed at fairly reduce inlet strain and it is actually possessed overload self-protective function. Since it is usually a pump of dry clearance seal development, if a certain pumping speed price 15 and an ultimate vacuum must be obtained, it is actually important to supply a lower inlet pressure for lowering the back flow, consequently, a pump has to be backed in use, roots vacuum pump needs to be started soon just after its inlet strain reaches a permissible value for economization. It truly is allow to select unique sorts of pump since the backing pump for factual requirements, this kind of as oil seal pump and liquid ring vacuum pump. When pumping the gas containing big amount of vapor, the liquid ring vacuum pump would be the perfect backing pump.


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