December 8, 2020

Working 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 sure relative positions. They can be near to one another and also to the housing with out actual contacting, so lubrication is needless within the operating housing. The carefully balanced operating elements and substantial precision bevel wheels ensue the pump be operated stably and continuously beneath the affliction of high-pressure distinction. Dynamic seal portion use our patent technologies and imported oil seals, the vibration level of shaft on 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 on the gravity valve is as follows, when the stress big difference amongst the suction and exhaust portion is over the weight on the valve, the valve opens immediately, which can make the pressure variation often retain inside a fixed controllable value, the worth is definitely the allowable highest strain distinction to make sure the pump function usually and to ensure that in 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 considerably higher velocity at fairly reduce inlet stress and it’s possessed overload self-protective perform. Because it is often a pump of dry clearance seal building, if a particular pumping speed charge and an ultimate vacuum need to be obtained, it truly is needed to supply a reduce inlet pressure for cutting down the back flow, thus, a pump must be backed in use, roots vacuum pump needs to be begun soon after its inlet pressure reaches a permissible worth for economization.
It really is permit to select diverse types of pump since the backing pump for factual needs, this kind of as oil seal pump and liquid ring vacuum pump. When pumping the fuel containing significant amount of vapor, the liquid ring vacuum pump will be the best backing pump.