Root Vacuum Pumps

Operating Principle and Features:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a continuous pace within 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 particular relative positions. These are close to to one another and to the housing without the need of real contacting, so lubrication is unnecessary inside the operating housing. The thoroughly balanced working elements and substantial precision bevel wheels ensue the pump be operated stably and constantly beneath the affliction of high-pressure variation. Dynamic seal part use our patent engineering and imported oil seals, the vibration level of shaft over the shaft seals is managed to significantly less than 0.02mm.
A gravity valve is put in between the suction and exhaust a part of the pump. The function from the gravity valve is as follows, once the strain difference concerning the suction and exhaust portion is over the weight of your valve, the valve opens instantly, which helps make the stress difference usually hold in a fixed controllable value, the value would be the allowable highest strain difference to guarantee the pump get the job done commonly and so that in fact, the roots vacuum pump with overflow valve is actually a kind of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has substantially greater pace at reasonably decrease inlet strain and it really is possessed overload self-protective function. Since it is a pump of dry clearance seal building, if a certain pumping pace rate and an ultimate vacuum must be obtained, it can be required to supply a lower inlet pressure for reducing the back flow, hence, a pump need to be backed in use, roots vacuum pump need to be started out soon immediately after its inlet pressure reaches a permissible value for economization.
It is allow to select different types of pump as the backing pump for factual specifications, such as oil seal pump and liquid ring vacuum pump. When pumping the gasoline containing big amount of vapor, the liquid ring vacuum pump will be the excellent backing pump.


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