Operating Principle and Characteristics:
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 guarantees these two rotors in particular relative positions. They may be close to to each other and also to the housing without having real contacting, so lubrication is needless within the functioning housing. The carefully balanced operating parts and higher precision bevel wheels ensue the pump be operated stably and continuously beneath the condition of high-pressure difference. Dynamic seal component use our patent engineering and imported oil seals, the vibration quantity of shaft over the shaft seals is controlled to much less than 0.02mm.
A gravity valve is installed among the suction and exhaust part of the pump. The function with the gravity valve is as follows, once the strain variation concerning the suction and exhaust portion is above the bodyweight from the valve, the valve opens immediately, which tends to make the strain variation normally retain in a fixed controllable worth, the value is the allowable highest strain variation to ensure the pump get the job done commonly and so that actually, the roots vacuum pump with overflow valve is often a form of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has considerably greater velocity at comparatively reduce inlet strain and it truly is possessed overload self-protective perform. Since it is often a pump of dry clearance seal construction, if a specific pumping velocity fee and an ultimate vacuum need to be obtained, it truly is important to supply a reduce inlet pressure for lowering the back movement, therefore, a pump has to be backed in use, roots vacuum pump ought to be started out quickly immediately after its inlet pressure reaches a permissible value for economization.
It is actually permit to select diverse sorts of pump as the backing pump for factual specifications, such as oil seal pump and liquid ring vacuum pump. When pumping the gas containing big level of vapor, the liquid ring vacuum pump is definitely the suitable backing pump.