Operating Principle and Functions: The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a continuous speed inside the pump housing for suction and exhaust of gasoline. Two rotors are supported by two bearings and synchronized by a gear, which guarantees these two rotors in selected relative positions. They may be close to to each other and also to the housing without the need of actual contacting, so lubrication is unnecessary from the doing work housing. The thoroughly balanced operating parts and large precision bevel wheels ensue the pump be operated stably and constantly beneath the issue of high-pressure difference. Dynamic seal part employs our patent engineering 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 between the suction and exhaust part of the pump. The perform in the gravity valve is as follows, when the stress distinction amongst the suction and exhaust component is in excess of the excess weight of your valve, the valve opens instantly, which helps make the stress variation constantly preserve within a fixed controllable worth, the worth would be the allowable highest pressure difference to make certain the pump do the job usually and in order that in fact, 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 increased pace at reasonably reduce inlet strain and it can be possessed overload self-protective function. Since it is a pump of dry clearance seal construction, if a certain pumping speed price 15 and an greatest vacuum need to be obtained, it is essential to supply a reduce inlet strain for decreasing the back movement, hence, a pump should be backed in use, roots vacuum pump ought to be started quickly immediately after its inlet strain reaches a permissible worth for economization. It is actually allow to select diverse kinds of pump because the backing pump for factual needs, this kind of as oil seal pump and liquid ring vacuum pump. When pumping the fuel containing significant level of vapor, the liquid ring vacuum pump is the best backing pump.


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