Water ring vacuum pump works: (referred to as water ring pump) is a rough vacuum pump, it can get the ultimate pressure, for a single-stage pump 2.66 ~ 9.31kPa; for two-stage pump 0.133 ~ 0.665kPa. Water ring pumps can also be used as compressors, which belong to the low pressure compressor, the pressure range (1 ~ 2) X105Pa gauge pressure (under specific conditions). Water ring pump in the petroleum, chemical, machinery, mining, light industry, papermaking, power, metallurgy, pharmaceutical and food industries and municipal and agricultural departments of many processes, such as vacuum filtration, vacuum feeding, vacuum degassing, vacuum Evaporation, vacuum concentration and vacuum regurgitation, has been widely used, as the water ring pump is compressed gas process isothermal, it can be extracted flammable and explosive gases, in addition to pumping out dust, water-containing gas Therefore, the application of water ring pump is increasing day by day. The working principle of water ring pump water ring pump is the impeller, pump body, suction exhaust plate, water in the pump body formed within the water ring, suction port, exhaust port, auxiliary exhaust valve and other components. Water ring vacuum pump working principle is the impeller is mounted eccentrically in the pump body, when the impeller rotates in the direction shown in the figure, into the water pump body water is thrown around the impeller, due to centrifugal force, the water formed a pump Cavity of similar shape and thickness of the closed water ring. The upper inner surface of the water ring is just tangential to the impeller hub and the lower inner surface of the water ring is just in contact with the top of the blade (in fact, the blade has a certain insertion depth in the water ring). At this point, a crescent-shaped space is formed between the impeller hub and the water ring, and this space is again divided into a number of small cavities equal to the number of blades by the impeller. If the upper part of the impeller 0 ° as a starting point, then the impeller 180 ° before rotation, the volume of the small chamber gradually from small to large, the pressure continues to decrease, and suction and exhaust port on the suction port connected to the small chamber The pressure in the space is lower than the pressure in the container to be pumped. According to the principle of gas pressure balance, the drawn gas is continuously drawn into the small cavity and is in the process of inhalation. When inhalation is completed and the suction port isolated from Ⅱ-Ⅱ to Ⅲ-Ⅲ cross-section, the volume of the small cavity is gradually reduced, the pressure continues to increase, this time in compression, when the compressed gas reaches the row in advance Gas pressure, exhaust from the auxiliary exhaust valve in advance. From sections III-III to I-I, the volume of the small chamber in communication with the exhaust port further reduces the pressure increase further, and when the pressure of the gas is greater than the discharge pressure, the compressed gas is exhausted from the exhaust port Discharge, continuous operation of the pump process, continue to inspiratory, compression, exhaust process, so as to achieve the purpose of continuous pumping, the above is the water ring vacuum pump principle of work.
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