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 speed within the pump housing for suction and exhaust of fuel. Two rotors are supported by two bearings and synchronized by a gear, which assures these two rotors in certain relative positions. They are close to to each other and to the housing with no actual contacting, so lubrication is needless from the operating housing. The very carefully balanced operating components and large precision bevel wheels ensue the pump be operated stably and continuously under the situation of high-pressure variation. Dynamic seal part use our patent technology and imported oil seals, the vibration quantity of shaft within the shaft seals is managed to much less than 0.02mm.
A gravity valve is put in between the suction and exhaust part of the pump. The perform in the gravity valve is as follows, when the strain distinction among the suction and exhaust portion is in excess of the excess weight on the valve, the valve opens automatically, which makes the stress variation normally hold in a fixed controllable value, the value will be the allowable highest strain distinction to make certain the pump perform commonly and in order that in fact, the roots vacuum pump with overflow valve can be a kind of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has considerably increased speed at comparatively reduced inlet pressure and it can be possessed overload self-protective perform. Since it is actually a pump of dry clearance seal development, if a specific pumping pace fee and an ultimate vacuum need to be obtained, it is needed to provide a decrease inlet strain for cutting down the back flow, as a result, a pump have to be backed in use, roots vacuum pump ought to be started out soon immediately after its inlet strain reaches a permissible worth for economization.
It can be permit to select various kinds of pump because the backing pump for factual necessities, such as oil seal pump and liquid ring vacuum pump. When pumping the gasoline containing substantial amount of vapor, the liquid ring vacuum pump is definitely the excellent backing pump.