Operating Principle and Features:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a continuous 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 certain relative positions. They are really close to to one another and to the housing devoid of actual contacting, so lubrication is pointless while in the functioning housing. The cautiously balanced working parts and high precision bevel wheels ensue the pump be operated stably and constantly beneath the ailment of high-pressure distinction. Dynamic seal aspect use 
our patent technologies and imported oil seals, the vibration volume of shaft around the shaft seals is managed to less than 0.02mm.
A gravity valve is set up among the suction and exhaust a part of the pump. The function with the gravity valve is as follows, once the strain variation involving the suction and exhaust aspect is more than the bodyweight with the valve, the valve opens instantly, which can make the stress distinction normally continue to keep within a fixed controllable worth, the value will be the allowable highest strain big difference to make certain the pump operate typically and in order that actually, the roots vacuum pump with overflow valve is actually a sort of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has considerably greater pace at somewhat reduce inlet stress and it really is possessed overload self-protective perform. Since it is a pump of dry clearance seal development, if a particular pumping pace fee and an greatest vacuum have 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 really should be began quickly following its inlet stress reaches a permissible worth for economization.
It truly is allow to select unique types of pump as the backing pump for factual prerequisites, such as oil seal pump and liquid ring vacuum pump. When pumping the gas containing large quantity of vapor, the liquid ring vacuum pump would be the excellent backing pump.
