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nong yong shui beng an zhuang bing tai zhong zhong ji jiu zheng
Author(s): 
Pages: 17
Year: Issue:  11
Journal: Farm Machinery

Keyword:  水泵安装泥砂底阀导向器进水管汽蚀底平面泵壳距离和纠正方法;
Abstract: <正> (1)抽水机进水管口紧贴沟底,导致泥砂、杂物吸进水泵停机后,大量泥砂、杂物沉淀在底阀之上。再次起动水泵时,阀门被堵死,吸不上水来。此外,由于泥砂、杂物流入泵壳,加速了叶片、导向器等零件的磨损,严重时还会打坏叶片。正确的安装方法是:进水管口中心与沟底平面应保持适当距离和倾角。必要时,可将底阀支起。 (2)进水管中心到进水水面的高度不够水泵起动后,水面出现漩涡,空气大量进入水泵,产生汽蚀,从而加速了水泵零件的剥蚀,缩短使用寿命。纠正方法是:应根据水泵口径,保持管口中心沉埋水中深度为管口直径的3~5倍。必要时,应在管口周围开挖深塘。
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