ROOTS VACUUM PUMPS

ROOTS VACUUM PUMPS
Operating Principle and Characteristics: The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a frequent velocity inside the pump housing for suction and exhaust of gas. Two rotors are supported by two bearings and synchronized by a gear, which guarantees these two rotors in sure relative positions. They may be near to one another and to the housing devoid of real contacting, so lubrication is pointless in the operating housing. The thoroughly balanced working parts and higher precision bevel wheels ensue the pump be operated stably and constantly below the problem of high-pressure big difference. Dynamic seal component employs our patent technology and imported oil seals, the vibration amount of shaft on the shaft seals is controlled to significantly less than 0.02mm. A gravity valve is put in concerning the suction and exhaust a part of the pump. The perform with the gravity valve is as follows, when the pressure difference between the suction and exhaust element is in excess of the bodyweight in the valve, the valve opens automatically, which makes the stress difference always preserve inside a fixed controllable worth, the value could be the allowable highest strain difference to make sure the pump operate usually and in order that in fact, the roots vacuum pump with overflow valve can be a form of overload self-protective pump. Series SYF roots vacuum pump with overflow valve has substantially increased speed at relatively reduce inlet pressure and it truly is possessed overload self-protective function. Since it can be a pump of dry clearance seal building, if a specific pumping speed price 15 and an ultimate vacuum have to be obtained, it truly is necessary to supply a reduced inlet stress for decreasing the back flow, thus, a pump needs to be backed in use, roots vacuum pump really should be began soon following its inlet pressure reaches a permissible value for economization. It is actually permit to select diverse kinds of pump as the backing pump for factual needs, such as oil seal pump and liquid ring vacuum pump. When pumping the gas containing large level of vapor, the liquid ring vacuum pump is the great backing pump.