December 8, 2020

Operating Principle and Options:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a constant velocity inside the pump housing for suction and exhaust of fuel. 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 needless inside the doing work housing. The very carefully balanced operating parts and substantial precision bevel wheels ensue the pump be operated stably and continuously under the ailment of high-pressure difference. Dynamic seal component use our patent technology and imported oil seals, the vibration amount of shaft to 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 perform of your gravity valve is as follows, once the strain distinction between the suction and exhaust part is in excess of the excess weight from the valve, the valve opens immediately, which makes the stress big difference constantly retain in the fixed controllable value, the worth would be the allowable highest strain variation to guarantee the pump perform commonly and so that in reality, 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 higher speed at fairly reduce inlet stress and it is possessed overload self-protective perform. Because it is often a pump of dry clearance seal development, if a specific pumping speed price and an ultimate vacuum need to be obtained, it can be important to provide a reduced inlet pressure for decreasing the back movement, therefore, a pump should be backed in use, roots vacuum pump must be started off soon right after its inlet pressure reaches a permissible worth for economization.
It really is allow to pick various varieties of pump as the backing pump for factual requirements, such as oil seal pump and liquid ring vacuum pump. When pumping the gasoline containing large quantity of vapor, the liquid ring vacuum pump will be the excellent backing pump.