Operating Principle and Attributes:
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 gas. Two rotors are supported by two bearings and synchronized by a gear, which guarantees these two rotors in certain relative positions. They are close to to each other and to the housing without real contacting, so lubrication is needless during the working housing. The meticulously balanced working elements and higher precision bevel wheels ensue the pump be operated stably and constantly beneath the ailment of high-pressure variation. Dynamic seal part use our patent technological innovation and imported oil seals, the vibration quantity of shaft over the shaft seals is controlled to less than 0.02mm.
A gravity valve is installed concerning the suction and exhaust part of the pump. The function of your gravity valve is as follows, when the stress difference between the suction and exhaust portion is above the weight in the valve, the valve opens instantly, which makes the stress variation generally retain inside a fixed controllable value, the value is definitely the allowable highest pressure difference to be sure the pump work generally and in order that the truth is, the roots vacuum pump with overflow valve is often a form of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has substantially larger pace at somewhat decrease inlet strain and it really is possessed overload self-protective perform. Because it is actually 
a pump of dry clearance seal development, if a specific pumping pace rate and an ultimate vacuum have to be obtained, it’s essential to supply a decrease inlet pressure for minimizing the back movement, hence, a pump should be backed in use, roots vacuum pump ought to be started out soon soon after its inlet strain reaches a permissible worth for economization.
It truly is permit to select diverse kinds of pump as the backing pump for factual demands, this kind of as oil seal pump and liquid ring vacuum pump. When pumping the gas containing huge amount of vapor, the liquid ring vacuum pump is definitely the best backing pump.
