Rotary vane vacuum pump advantages and disadvantages

Rotary vacuum pump in today's industrial use more widely, how to avoid weaknesses and enhance the competitiveness of this product. Need to know more about the advantages and disadvantages of this product. Rotary vane vacuum pump Rotary vane vacuum pump advantages: 1, due to rotary vane vacuum pump gas compression isothermal, it can be extracted flammable, explosive gas. Because there is no exhaust valve and friction surface, it can be extracted with dust gas, condensable gas and water-air mixture. With these outstanding features, despite their inefficiencies, they are still widely used. 2, pumping rate: 0.43-560m3 / min 3, the minimum suction absolute pressure: 33-160hPa 4, the use of temperature: -10 ℃ -40 ℃ 5, supporting power: 7.5-560KW 6, overcurrent material: cast iron, stainless steel 7 , Simple structure, low manufacturing precision, simple processing, compact structure. Disadvantages of rotary vane vacuum pump: 1, low efficiency: generally about 30%, better up to 50%. 2, low degree of vacuum: This is not only because of the structural constraints, more importantly, the working fluid saturated vapor pressure limit. 3, water for the working fluid: the ultimate pressure can only reach 2000 - 4000Pa. Working fluid with oil up to 130Pa In summary, combined with its advantages and disadvantages. We can see that the vacuum pump gas compression is isothermal, it can be extracted flammable, explosive gas, its safety can still be guaranteed. Because there is no exhaust valve and the collision surface, so you can remove dust with gas and water-air mixture. Because of these characteristics, despite its low efficiency, it is still very competitive throughout the market. Related articles: Rotary vane vacuum pump parameters Rotary vane vacuum pump working principle and structure

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