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Working Principle and Features:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a frequent velocity 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 specific relative positions. They are near to one another and to the housing with no real contacting, so lubrication is needless inside the operating housing. The very carefully balanced operating components and high precision bevel wheels ensue the pump be operated stably and constantly under the situation of high-pressure big difference. Dynamic seal portion use our patent engineering and imported oil seals, the vibration amount of shaft on the shaft seals is controlled to less than 0.02mm.
A gravity valve is installed concerning the suction and exhaust a part of the pump. The perform in the gravity valve is as follows, once the strain difference between the suction and exhaust part is in excess of the excess weight of the valve, the valve opens immediately, which tends to make the pressure variation often maintain in a fixed controllable value, the value is the allowable highest pressure variation to be sure the pump function generally and to ensure in fact, the roots vacuum pump with overflow valve is often a kind of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has considerably increased pace at fairly lower inlet pressure and it really is possessed overload self-protective function. As it is a pump of dry clearance seal building, if a specific pumping velocity fee and an greatest vacuum need to be obtained, it truly is needed to provide a lower inlet strain for lowering the back movement, consequently, a pump have to be backed in use, roots vacuum pump need to be started off quickly following its inlet stress reaches a permissible value for economization.
It really is permit to select different kinds of pump since the backing pump for factual requirements, such as oil seal pump and liquid ring vacuum pump. When pumping the gas containing huge quantity of vapor, the liquid ring vacuum pump will be the great backing pump.