The basic principle of inline air roots vacuum pump _

roots vacuum water pump internal cooling by circulating cooling air to heat away from the heat source. Gas is pumped. When it is compressed or discharge, it is cooled air cooling. Therefore, the pump can be used for standard pump can't work.

can the cooling pump chamber, because the working parts of impeller and studio with special. When the special part work, part of the studio closed, blocking the entrance and exit, and through the special air vents. Cooling air flows out from the pressure side or into the studio, and from the export side full of cooling gas pressure, and gas cycle.

gas circulation cooled roots vacuum pump, special impeller head cold air traffic control without the need for additional control components, so the internal circulation cooling roots vacuum pump with the ordinary roots vacuum pump is the same, simple structure and clean. It will be cooler is connected to the outlet, external cooler installed in the pump shell, ease of maintenance and replacement.

if the cooler design right and conveying cooling gas pipe size is large enough, the cooling effect is good, so the roots vacuum pump can work in all kinds of differential pressure conditions.

heat water pump not only depends on the speed, circulating cooling dose, still depends on the differential pressure, pressure differential is proportional to ( Proportional to the speed) 。 In addition, the gap must be maintained between the vane water pump and the pump shell is minimal. This is beneficial to increase the volumetric efficiency, to achieve the higher vacuum degree.

gas circulation cooled roots vacuum pump is most suitable for emissions and the process of compressed gas or steam. These before entering the pump discharge or compressed gas should not contact with oil or harmful liquid. That is true of cryostat. If the pressure differential between the inlet and exhaust is large and the limit of vacuum degree is high, please consider to use three series roots vacuum pump. Besides, there are water cooled or multistage pump.

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