December 8, 2020

Working Principle and Functions:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a consistent velocity within the pump housing for suction and exhaust of fuel. Two rotors are supported by two bearings and synchronized by a gear, which ensures these two rotors in specific relative positions. They can be close to to each other and to the housing with out real contacting, so lubrication is needless inside the functioning housing. The thoroughly balanced operating elements and higher precision bevel wheels ensue the pump be operated stably and continuously below the problem of high-pressure distinction. Dynamic seal part use our patent technologies and imported oil seals, the vibration quantity of shaft to the shaft seals is controlled to less than 0.02mm.
A gravity valve is set up among the suction and exhaust part of the pump. The function with the gravity valve is as follows, when the strain variation amongst the suction and exhaust component is above the bodyweight in the valve, the valve opens immediately, which can make the stress distinction usually maintain within a fixed controllable worth, the value could be the allowable highest pressure big difference to ensure the pump perform commonly and to ensure that in reality, the roots vacuum pump with overflow valve is really a variety of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has considerably higher velocity at rather lower inlet strain and it’s possessed overload self-protective perform. Since it is usually a pump of dry clearance seal development, if a certain pumping pace price and an greatest vacuum need to be obtained, it can be important to supply a reduce inlet pressure for cutting down the back movement, thus, a pump need to be backed in use, roots vacuum pump really should be commenced soon soon after its inlet pressure reaches a permissible worth for economization.
It’s allow to pick unique types of pump as the backing pump for factual demands, such as oil seal pump and liquid ring vacuum pump. When pumping the fuel containing significant level of vapor, the liquid ring vacuum pump is the great backing pump.