December 8, 2020

Operating 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 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 selected relative positions. They may be close to to each other and also to the housing devoid of actual contacting, so lubrication is pointless while in the functioning housing. The meticulously balanced operating parts and higher precision bevel wheels ensue the pump be operated stably and constantly under the situation of high-pressure distinction. Dynamic seal element use our patent engineering and imported oil seals, the vibration quantity of shaft over the shaft seals is controlled to less than 0.02mm.
A gravity valve is put in among the suction and exhaust part of the pump. The perform in the gravity valve is as follows, once the strain big difference among the suction and exhaust portion is over the weight on the valve, the valve opens instantly, which makes the stress variation constantly keep inside a fixed controllable worth, the value would be the allowable highest stress variation to make certain the pump do the job generally and to ensure in actual fact, the roots vacuum pump with overflow valve is usually a kind of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has substantially larger velocity at rather lower inlet stress and it really is possessed overload self-protective perform. Because it can be a pump of dry clearance seal development, if a certain pumping speed rate and an greatest vacuum must be obtained, it truly is needed to provide a reduce inlet stress for minimizing the back movement, for that reason, a pump has to be backed in use, roots vacuum pump really should be commenced quickly soon after its inlet strain reaches a permissible worth for economization.
It is permit to pick diverse varieties of pump since the backing pump for factual demands, this kind of as oil seal pump and liquid ring vacuum pump. When pumping the gas containing substantial level of vapor, the liquid ring vacuum pump may be the best backing pump.