ROOTS VACUUM PUMPS
Working Principle and Capabilities: The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a constant speed within the pump housing for suction and exhaust of gasoline. Two rotors are supported by two bearings and synchronized by a gear, which assures these two rotors in particular relative positions. They are really near to each other and to the housing without having real contacting, so lubrication is unnecessary from the operating housing. The cautiously balanced operating parts and higher precision bevel wheels ensue the pump be operated stably and continuously underneath the condition of high-pressure big difference. Dynamic seal component employs our patent technology and imported oil seals, the vibration quantity of shaft within the shaft seals is controlled to significantly less than 0.02mm. A gravity valve is installed involving the suction and exhaust a part of the pump. The function from the gravity valve is as follows, once the stress distinction amongst the suction and exhaust portion is more than the excess weight of the valve, the valve opens instantly, which tends to make the strain difference often continue to keep inside a fixed controllable value, the value would be the allowable highest stress distinction to make sure the pump operate generally and to ensure in reality, the roots vacuum pump with overflow valve is usually a form of overload self-protective pump. Series SYF roots vacuum pump with overflow valve has considerably higher speed at comparatively decrease inlet strain and it is possessed overload self-protective function. Because it is often a pump of dry clearance seal construction, if a particular pumping velocity rate 15 and an ultimate vacuum should be obtained, it really is needed to provide a reduced inlet strain for lowering the back flow, as a result, a pump must be backed in use, roots vacuum pump ought to be began quickly soon after its inlet strain reaches a permissible worth for economization. It is actually permit to select distinctive sorts of pump because the backing pump for factual prerequisites, such as oil seal pump and liquid ring vacuum pump. When pumping the gasoline containing significant amount of vapor, the liquid ring vacuum pump may be the great backing pump.