A method of reducing friction by vacuum pumps

Vacuum pump maintenance manufacturers talk about the vacuum pump to reduce friction method text: today, vacuum pump maintenance manufacturers here to introduce the vacuum pump to reduce friction method.

The vacuum pump can remove the dry gas in the sealed container of the constant temperature and humidity test chamber. But it is not suitable for removing gases that contain too much oxygen, are corrosive to metals, react chemically with pumped oil, or contain particulate dust.

Vacuum pump is one of the most basic vacuum acquisition equipment in vacuum technology. Vacuum pump for small and medium-sized pump. Rotary vane pump has a single stage and two stages. The so-called two-stage, is in the structure of two single-stage pump series. Generally made of two - stage, in order to obtain a higher vacuum degree.

The vacuum pump body is equipped with an appropriate amount of water as the working fluid. When the impeller rotates clockwise as shown in the figure, the water is thrown around by the impeller. Due to the effect of centrifugal force, the water forms a closed ring of approximately equal thickness determined by the shape of the pump chamber. The inner surface of the lower part of the water ring is just tangent to the hub of the impeller, and the inner surface of the upper part of the water ring is just in contact with the tip of the blade (in fact, the blade has a certain penetration depth in the water ring). A crescent-shaped space is formed between the hub of the impeller and the water ring, and this space is divided into several small cavities equal to the number of blades by the impeller. If the lower part of the impeller 0° as the starting point, then the impeller in the rotation before 180° small chamber volume from small to large, and with the end face of the suction port, at this time the gas is inhaled, when the end of the suction chamber and the suction port contact; When the impeller continues to rotate, small cavity by large, so that the gas is compressed; When the small cavity and exhaust port communication, the gas will be out of the pump.

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