Root Vacuum Pumps

Working Principle and Options:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a consistent pace inside the pump housing for suction and exhaust of gas. Two rotors are supported by two bearings and synchronized by a gear, which ensures these two rotors in specific relative positions. They are close to to one another and also to the housing with out real contacting, so lubrication is unnecessary within the operating housing. The carefully balanced working parts and substantial precision bevel wheels ensue the pump be operated stably and continuously below the situation of high-pressure big difference. Dynamic seal component use our patent technology and imported oil seals, the vibration quantity of shaft to the shaft seals is controlled to much less than 0.02mm.
A gravity valve is installed concerning the suction and exhaust part of the pump. The perform of the gravity valve is as follows, when the strain distinction between the suction and exhaust part is above the excess weight from the valve, the valve opens automatically, which helps make the stress variation often retain in the fixed controllable worth, the value is the allowable highest stress variation to guarantee the pump work usually and so that in truth, the roots vacuum pump with overflow valve is a type of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has considerably higher speed at somewhat reduce inlet stress and it truly is possessed overload self-protective perform. As it is actually a pump of dry clearance seal construction, if a particular pumping velocity rate and an ultimate vacuum must be obtained, it truly is needed to supply a decrease inlet pressure for reducing the back movement, as a result, a pump have to be backed in use, roots vacuum pump need to be started out quickly immediately after its inlet pressure reaches a permissible value for economization.
It truly is permit to select unique kinds of pump as the backing pump for factual demands, such as oil seal pump and liquid ring vacuum pump. When pumping the gasoline containing huge quantity of vapor, the liquid ring vacuum pump is definitely the best backing pump.