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 speed within the pump housing for suction and exhaust of gasoline. Two rotors are supported by two bearings and synchronized by a gear, which ensures these two rotors in certain relative positions. These are close to to one another and to the housing with out real contacting, so lubrication is needless from the functioning housing. The meticulously balanced operating components and substantial precision bevel wheels ensue the pump be operated stably and continuously beneath the issue of high-pressure variation. Dynamic seal portion employs our patent engineering and imported oil seals, the vibration amount of shaft about the shaft seals is controlled to less than 0.02mm. A gravity valve is put in amongst the suction and exhaust part of the pump. The perform on the gravity valve is as follows, once the pressure variation involving the suction and exhaust element is above the weight from the valve, the valve opens immediately, which can make the stress variation often retain in a fixed controllable worth, the worth would be the allowable highest strain variation to make sure the pump work usually and to ensure that actually, 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 considerably greater speed at comparatively decrease inlet stress and it is possessed overload self-protective function. Because it is really a pump of dry clearance seal building, if a specific pumping pace rate 15 and an ultimate vacuum need to be obtained, it is necessary to provide a reduced inlet strain for decreasing the back movement, for that reason, a pump needs to be backed in use, roots vacuum pump should be started quickly right after its inlet strain reaches a permissible worth for economization. It’s permit to pick various kinds of pump since the backing pump for factual specifications, such as oil seal pump and liquid ring vacuum pump. When pumping the gas containing large volume of vapor, the liquid ring vacuum pump would be the ideal backing pump.


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