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Working Principle and Characteristics: The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a frequent pace within 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 certain relative positions. They may be near to each other and also to the housing without real contacting, so lubrication is unnecessary from the working housing. The meticulously balanced working parts and higher precision bevel wheels ensue the pump be operated stably and continuously beneath the issue of high-pressure big difference. Dynamic seal portion makes use of our patent technologies and imported oil seals, the vibration quantity of shaft within the shaft seals is controlled to much less than 0.02mm. A gravity valve is installed amongst the suction and exhaust a part of the pump. The perform on the gravity valve is as follows, once the stress difference concerning the suction and exhaust portion is above the fat with the valve, the valve opens immediately, which can make the pressure big difference generally preserve in a fixed controllable worth, the value may be the allowable highest stress distinction to be sure the pump perform typically and to ensure in truth, the roots vacuum pump with overflow valve can be a sort of overload self-protective pump. Series SYF roots vacuum pump with overflow valve has considerably increased speed at somewhat lower inlet pressure and it’s possessed overload self-protective function. Since it is often a pump of dry clearance seal construction, if a certain pumping pace charge 15 and an ultimate vacuum need to be obtained, it really is needed to supply a reduce inlet stress for reducing the back movement, hence, a pump needs to be backed in use, roots vacuum pump need to be started quickly soon after its inlet strain reaches a permissible value for economization. It truly is allow to pick distinctive varieties of pump since the backing pump for factual specifications, this kind of as oil seal pump and liquid ring vacuum pump. When pumping the gasoline containing large volume of vapor, the liquid ring vacuum pump is definitely the perfect backing pump.


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