Operating 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 inside 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 particular relative positions. They are near to each other and to the housing without real contacting, so lubrication is pointless within the doing work housing. The cautiously balanced operating parts and higher precision bevel wheels ensue the pump be operated stably and continuously under the condition of high-pressure variation. Dynamic seal aspect utilizes our patent engineering and imported oil seals, the vibration volume of shaft within the shaft seals is managed to much less than 0.02mm. A gravity valve is put in between the suction and exhaust part of the pump. The function of the gravity valve is as follows, once the stress distinction involving the suction and exhaust element is above the bodyweight on the valve, the valve opens instantly, which makes the pressure big difference generally continue to keep inside a fixed controllable worth, the worth could be the allowable highest stress big difference to guarantee the pump work ordinarily and to ensure that in reality, the roots vacuum pump with overflow valve is actually a type of overload self-protective pump. Series SYF roots vacuum pump with overflow valve has substantially higher speed at fairly decrease inlet pressure and it is possessed overload self-protective function. Since it is actually a pump of dry clearance seal construction, if a specific pumping speed fee 15 and an greatest vacuum must be obtained, it’s needed to provide a reduce inlet stress for minimizing the back flow, as a result, a pump should be backed in use, roots vacuum pump need to be started out quickly after its inlet stress reaches a permissible value for economization. It really is permit to select unique sorts of pump because the backing pump for factual specifications, this kind of as oil seal pump and liquid ring vacuum pump. When pumping the gasoline containing large quantity of vapor, the liquid ring vacuum pump is definitely the ideal backing pump.


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