Root Vacuum Pumps

Operating Principle and Attributes:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a constant pace within the pump housing for suction and exhaust of fuel. Two rotors are supported by two bearings and synchronized by a gear, which guarantees these two rotors in particular relative positions. They may be close to to each other and to the housing with out real contacting, so lubrication is unnecessary inside the functioning housing. The cautiously balanced working parts and high precision bevel wheels ensue the pump be operated stably and continuously under the affliction of high-pressure variation. Dynamic seal aspect use our patent engineering and imported oil seals, the vibration volume of shaft to the shaft seals is controlled to less than 0.02mm.
A gravity valve is installed between the suction and exhaust a part of the pump. The perform with the gravity valve is as follows, when the pressure difference among the suction and exhaust part is over the excess weight from the valve, the valve opens instantly, which makes the strain big difference usually preserve within a fixed controllable value, the worth will be the allowable highest stress variation to make certain the pump do the job usually and so that in reality, the roots vacuum pump with overflow valve is a sort of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has substantially greater pace at comparatively reduced inlet pressure and it’s possessed overload self-protective function. Since it is often a pump of dry clearance seal construction, if a certain pumping pace charge and an ultimate vacuum have to be obtained, it can be important to provide a reduce inlet pressure for decreasing the back flow, consequently, a pump must be backed in use, roots vacuum pump should be began quickly after its inlet pressure reaches a permissible value for economization.
It’s permit to select diverse kinds of pump since the backing pump for factual necessities, such as oil seal pump and liquid ring vacuum pump. When pumping the gas containing massive quantity of vapor, the liquid ring vacuum pump is the best backing pump.


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