Working Principle and Capabilities:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a continual velocity within 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 certain relative positions. These are close to to each other and to the housing devoid of actual contacting, so lubrication is pointless from the operating housing. The meticulously balanced operating components and high precision bevel wheels ensue the pump be operated stably and constantly beneath the issue of high-pressure variation. Dynamic seal aspect use our patent technologies and imported oil seals, the vibration volume of shaft around the shaft seals is controlled to less than 0.02mm.
A gravity valve is set up amongst the suction and exhaust a part of the pump. The function from the gravity valve is as follows, when the stress big difference between the suction and exhaust element is in excess of the weight on the valve, the valve opens immediately, which makes the strain difference always continue to keep in a fixed controllable worth, the worth could be the allowable highest stress big difference to be sure the pump do the job normally and so that in actual fact, the roots vacuum pump with overflow valve is actually a variety of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has considerably higher velocity at rather reduce inlet strain and it is actually possessed overload self-protective 
function. Since it is often a pump of dry clearance seal construction, if a specific pumping pace rate and an greatest vacuum have to be obtained, it is needed to supply a reduced inlet strain for decreasing the back movement, therefore, a pump needs to be backed in use, roots vacuum pump ought to be began quickly after its inlet stress reaches a permissible value for economization.
It’s allow to pick different types of pump because the backing pump for factual demands, this kind of as oil seal pump and liquid ring vacuum pump. When pumping the fuel containing huge quantity of vapor, the liquid ring vacuum pump is the best backing pump.
