Operating Principle and Attributes:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a consistent pace within the pump housing for suction and exhaust of gasoline. Two rotors are supported by two bearings and synchronized by a gear, which guarantees these two rotors in certain relative positions. They can be close to to each other and to the housing without the need of actual contacting, so lubrication is needless within the working housing. The carefully balanced operating components and substantial precision bevel wheels ensue the pump be operated stably and continuously under the situation of high-pressure big difference. Dynamic seal portion use our patent technology and imported oil seals, the vibration amount of shaft over the shaft seals is controlled to less than 0.02mm.
A gravity valve is set up in between the suction and exhaust a part of the pump. The function of the gravity valve is as follows, when the pressure big difference involving the suction and exhaust aspect is more than the bodyweight with the valve, the valve opens instantly, which makes the pressure variation often retain within a fixed controllable value, the worth is definitely the allowable highest stress variation to guarantee the pump function usually and to ensure in fact, the roots vacuum pump with overflow valve can be a variety of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has substantially greater pace at relatively reduce inlet pressure and it truly is possessed overload self-protective perform. Since it is usually a pump of dry clearance seal construction, if a specific pumping speed rate and an ultimate vacuum need to be obtained, it really is required to supply a reduced inlet strain for decreasing the back flow, as a result, a pump have to be backed in use, roots vacuum pump should be begun soon soon after its inlet pressure reaches a permissible value for economization.
It truly is allow to pick various kinds of pump as the backing pump for factual requirements, such as oil seal pump and liquid ring vacuum pump. When pumping the fuel containing large amount of vapor, the liquid ring vacuum pump may be the ideal backing pump.