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沪产电动吸引器DQ51、XQ-30B、YB-LX02A、YB-D31-30、B70-30等在使用中经常发生润滑中渗水现象,严重时全部混水和污物,往往造成机件锈死,电机烧毁。为了弄清原因,我们对B70-30吸引器的真空泵进行了分析。电动吸引器在工作时,液体不断抽入瓶内,与此同时,含有微量组织的温湿气体必须进入真空泵与润滑油混合后再由排气孔排出。这种气体不仅污染润滑油,更主要的是接触金属机体后会遇冷凝结成水(在冬季尤为严重)。天长日久,水份越积越多,浮在水面的油层往往在喷油中逐渐减少。以施行人工流产用的电动吸引器为
Shanghai-made electric suction device DQ51, XQ-30B, YB-LX02A, YB-D31-30, B70-30, etc. often occur in the use of water in the lubrication phenomenon, all serious water and dirt when mixed, often causing the rust to die The motor burned. In order to clarify the reason, we analyzed the vacuum pump of the B70-30 aspirator. When the electric suction device is in operation, the liquid is continuously pumped into the bottle. At the same time, the temperature-humidity gas containing trace amounts of tissue must enter the vacuum pump and be mixed with the lubricating oil before being discharged from the vent hole. This kind of gas not only contaminates the lubricating oil, but more importantly it encounters condensation and water formation after contact with the metal body (especially severe during the winter). As time goes on, the water accumulates more and more, and the oil layer floating on the water tends to gradually decrease in the injection. In order to implement artificial abortion, the electric aspirator is