Operating Principle and 
Features:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a consistent velocity inside 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 specified relative positions. They are near to each other and to the housing with out actual contacting, so lubrication is pointless inside the doing work housing. The meticulously balanced working elements and substantial precision bevel wheels ensue the pump be operated stably and continuously below the problem of high-pressure variation. Dynamic seal aspect use our patent technology and imported oil seals, the vibration level of shaft on the shaft seals is managed to less than 0.02mm.
A gravity valve is set up involving the suction and exhaust part of the pump. The function of the gravity valve is as follows, once the stress big difference amongst the suction and exhaust portion is more than the weight in the valve, the valve opens instantly, which tends to make the pressure big difference constantly hold inside a fixed controllable worth, the worth is the allowable highest strain big difference to make certain the pump do the job commonly and in order that in truth, the roots vacuum pump with overflow valve is usually a variety of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has considerably greater speed at somewhat lower inlet stress and it truly is possessed overload self-protective function. Since it is really a pump of dry clearance seal building, if a specific pumping velocity charge and an greatest vacuum should be obtained, it can be essential to provide a lower inlet pressure for reducing the back flow, as a result, a pump need to be backed in use, roots vacuum pump should be began soon soon after its inlet stress reaches a permissible value for economization.
It’s allow to select distinct sorts of pump as the backing pump for factual necessities, this kind of as oil seal pump and liquid ring vacuum pump. When pumping the fuel containing significant volume of vapor, the liquid ring vacuum pump could be the excellent backing pump.
