Operating Principle and Functions:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a continuous velocity 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 certain relative positions. They can be close to to each other and also to the housing without actual contacting, so lubrication is unnecessary while in the functioning housing. The very carefully balanced working components and higher precision bevel wheels ensue the pump be operated stably and continuously below the ailment of high-pressure distinction. Dynamic seal part use our patent technologies and imported oil seals, the vibration level of shaft about the shaft seals is controlled to significantly less than 0.02mm.
A gravity valve is set up between the suction and exhaust a part of the pump. The perform in the gravity valve is as follows, once the stress distinction involving the suction and exhaust aspect is above the bodyweight in the valve, the valve opens automatically, which helps make the pressure distinction constantly maintain within a fixed controllable value, the value is definitely the allowable highest stress big difference to make certain the pump get the job done commonly and so that the truth is, the roots vacuum pump with overflow valve is a kind of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has substantially greater pace 
at somewhat lower inlet pressure and it’s possessed overload self-protective function. Since it is usually a pump of dry clearance seal construction, if a particular pumping speed price and an ultimate vacuum need to be obtained, it can be important to provide a decrease inlet strain for minimizing the back flow, for that reason, a pump should be backed in use, roots vacuum pump needs to be started out quickly immediately after its inlet strain reaches a permissible worth for economization.
It’s permit to select different types of pump since the backing pump for factual requirements, this kind of as oil seal pump and liquid ring vacuum pump. When pumping the fuel containing large amount of vapor, the liquid ring vacuum pump would be the suitable backing pump.
