Operating Principle and Capabilities:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a frequent velocity 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 selected relative positions. These are close to to one another and to the housing with no real contacting, so lubrication is unnecessary while in the working housing. The thoroughly balanced working parts and higher precision bevel wheels ensue the pump be operated stably and constantly below the issue of high-pressure distinction. Dynamic seal part use our patent technologies and imported oil seals, the vibration volume of shaft on the shaft seals is controlled to much less than 0.02mm.
A gravity valve is set up amongst the suction and exhaust part of the pump. The perform of the gravity valve is as follows, when the strain distinction among the suction and exhaust portion is more than the excess weight with the valve, the valve opens instantly, which tends to make the stress distinction always hold in a fixed controllable worth, the worth is the allowable highest stress difference to make sure the pump get the job done usually and in order that in reality, the roots vacuum pump with overflow valve is often a variety of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has substantially larger speed at rather decrease inlet pressure and it really is possessed overload self-protective perform. Because it is often a pump of dry clearance seal development, if a particular pumping pace fee and an greatest vacuum must be obtained, it is actually necessary to supply a lower inlet stress for cutting down the back movement, thus, a pump needs to be backed in use, roots vacuum pump ought to be started out quickly following its inlet stress reaches a permissible value for economization.
It can be allow to pick unique kinds of pump because the backing pump for factual specifications, such as oil seal pump and liquid ring vacuum pump. When pumping the fuel containing substantial amount of vapor, the liquid ring vacuum pump would be the great backing pump.