Start Quickly Roots Vacuum Pump For Vacuum Dehydration
Roots Industrial Vacuum Pump Description
Roots vacuum pump, also known as mechanical booster pump, is a rotary positive displacement vacuum pump. The schematic structure of the Roots vacuum pump is shown in Figure on the left. There are two figure-8 rotors in the pump chamber, which are installed on a pair of shafts in parallel, and are driven by a pair of synchronous gear. The rotor and the rotor, the rotors and the pump chamber maintain a certain gap and do not contact each other, so the friction loss during operation is very small, the friction power consumption is extremely small, and high-speed operation can be achieved.
Figure below shows the internal structure of the Roots vacuum pump. The two rotors of the pump are supported in the rolling bearings on the end covers on both sides of the pump chamber, and rely on a pair of adjustable synchronous gears to keep the two rotors rotating at high speed. A certain mutual position, and the end face gap between the rotor and the end cover is guaranteed by the special structure of the fixed end (closer to the motor side), so that the pump can only expand to one end of the gearbox due to heat during operation.
Roots Industrial Vacuum Pump Advantage
The advantage of the Roots vacuum pump is that it has a higher pumping speed at a lower inlet pressure, but it cannot be used alone. There must be a backing vacuum pump in series, and the pressure in the system is pumped by the backing vacuum pump to an allowable starting pressure of the Roots vacuum pump before it is started. In general, the Roots vacuum pump is not allowed to work under high pressure difference, otherwise it will be overloaded, overheated and damaged, so the backing vacuum pump must be selected reasonably, and the necessary protective equipment must be installed.
The backing vacuum pump is generally an oil-sealed mechanical pump, but if the ultimate pressure requirement is not high, other forms of rough vacuum pump can be used as the backing pump, especially when the gas containing a large amount of water vapor is extracted, the dry screw vacuum pump is recommended as the backing pump.
Roots Industrial Vacuum Pump Notes
1. The pumping speed refers to the maximum pumping speed measured when the inlet pressure of the Roots vacuum pump is in the range of 67 Pa ~ 2.67 Pa under the condition that the recommended backing pump is used.
2. The ultimate pressure refers to the stable minimum air pressure measured at the inlet of the pump with a vacuum gauge after fully operation without any additional container, the pump port is closed and no intake air is provided under the condition that the recommended backing pump is used.
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