December 8, 2020

Operating Principle and Features:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a frequent speed inside the pump housing for suction and exhaust of fuel. Two rotors are supported by two bearings and synchronized by a gear, which ensures these two rotors in particular relative positions. They are really close to to each other and to the housing without the need of actual contacting, so lubrication is pointless during the functioning housing. The thoroughly balanced working elements and high precision bevel wheels ensue the pump be operated stably and constantly underneath the affliction of high-pressure difference. Dynamic seal part use our patent engineering and imported oil seals, the vibration volume of shaft within the shaft seals is managed to much less than 0.02mm.
A gravity valve is put in involving the suction and exhaust part of the pump. The function in the gravity valve is as follows, once the strain variation among the suction and exhaust portion is in excess of the excess weight with the valve, the valve opens immediately, which tends to make the pressure difference usually maintain inside a fixed controllable value, the worth is the allowable highest stress variation to guarantee the pump work usually and to ensure 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 considerably greater speed at relatively reduced inlet pressure and it is possessed overload self-protective function. Since it is a pump of dry clearance seal construction, if a certain pumping velocity price and an greatest vacuum must be obtained, it’s important to supply a decrease inlet pressure for lowering the back flow, consequently, a pump must be backed in use, roots vacuum pump needs to be started out quickly following its inlet strain reaches a permissible worth for economization.
It truly is allow to select distinct varieties of pump because the backing pump for factual necessities, such as oil seal pump and liquid ring vacuum pump. When pumping the gas containing massive level of vapor, the liquid ring vacuum pump will be the great backing pump.