Working Principle and Characteristics:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a constant pace inside 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 particular relative positions. They can be near to each other and also to the housing without real contacting, so lubrication is unnecessary during the doing work housing. The carefully balanced operating components and high precision bevel wheels ensue the pump be operated stably and constantly underneath the problem of high-pressure distinction. Dynamic seal aspect use our patent technological innovation and imported oil seals, the vibration level of shaft over the shaft seals is controlled to less than 0.02mm.
A gravity valve is installed amongst the suction and exhaust a part of the pump. The perform with the gravity valve is as follows, once the pressure distinction amongst the suction and exhaust part is more than the excess weight with the valve, the valve opens instantly, which can make the strain difference often maintain in the fixed controllable worth, the worth is the allowable highest stress big difference to guarantee the pump do the job generally and to ensure in reality, the roots vacuum pump with overflow valve is actually a form of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has substantially greater velocity at fairly decrease inlet pressure and it truly is possessed overload self-protective function. Since it is often a pump of dry clearance seal development, if a certain pumping velocity rate and an greatest vacuum need to be obtained, it’s necessary to supply a reduced inlet strain for reducing the back flow, consequently, a pump need to be backed in use, roots vacuum pump must be began soon just after its inlet pressure reaches a permissible value for economization.
It truly is permit to pick distinctive varieties of pump since the backing pump for factual prerequisites, this kind of as oil seal pump and liquid ring vacuum pump. When pumping the fuel containing significant amount of vapor, the liquid ring vacuum pump could be the great backing pump.