ROOTS VACUUM PUMPS
Working Principle and Functions: 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 gas. Two rotors are supported by two bearings and synchronized by a gear, which ensures these two rotors in sure relative positions. They are near to one another and to the housing devoid of real contacting, so lubrication is unnecessary inside the functioning housing. The thoroughly balanced working elements and large precision bevel wheels ensue the pump be operated stably and constantly below the condition of high-pressure variation. Dynamic seal aspect uses our patent technology and imported oil seals, the vibration level of shaft on the shaft seals is controlled to much less than 0.02mm. A gravity valve is set up involving the suction and exhaust a part of the pump. The function on the gravity valve is as follows, once the strain variation involving the suction and exhaust component is above the weight in the valve, the valve opens instantly, which helps make the stress difference usually maintain inside a fixed controllable value, the value is definitely the allowable highest pressure big difference to guarantee the pump do the job usually and to ensure that actually, the roots vacuum pump with overflow valve is a variety of overload self-protective pump. Series SYF roots vacuum pump with overflow valve has considerably increased pace at relatively lower inlet stress and it is possessed overload self-protective function. Since it is often a pump of dry clearance seal construction, if a particular pumping speed fee 15 and an ultimate vacuum should be obtained, it can be essential to provide a reduce inlet pressure for reducing the back movement, therefore, a pump should be backed in use, roots vacuum pump ought to be commenced soon just after its inlet stress reaches a permissible worth for economization. It truly is allow to pick different sorts of pump since the backing pump for factual demands, this kind of as oil seal pump and liquid ring vacuum pump. When pumping the gas containing large level of vapor, the liquid ring vacuum pump could be the best backing pump.