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发明名称
底阀
摘要
本实用新型涉及一种升降圆锥式底阀,其外形虽然与普通底阀相同,但在阀体和入水过滤罩之间装有带O形橡胶密封圈的截头圆锥形活门和文氏管形阀座。这种底阀可在含有砂子的水中长期工作亦能可靠密封活门,较彻底防止水泵吸水管的漏空现象,和普通底阀相比较,局部阻力损失可减少一半左右,水泵的吸水扬程提高1~1.5米。
申请公布号
CN2200705Y
申请公布日期
1995.06.14
申请号
CN93211042.8
申请日期
1993.05.03
申请人
朴龙奎
发明人
朴龙奎
分类号
F04B21/06
主分类号
F04B21/06
代理机构
代理人
主权项
1、一种升降、圆锥式底阀,它包括:与普通底阀相同的阀体1和过滤罩4之间装有活门2和阀座3等,其特征在于,阀体1中部导向孔内套有截头圆锥形活门2,该圆锥段中部构槽内套有0型橡胶密封圈5,当它接触阀座3的圆锥面时,仅靠活门自重可靠密封活门,而阀体1的下段套有带密封垫6的文氏管形阀座3,其入水口以半径R圆滑过渡,出水口为锥形角θ=45°~60°的圆锥形扩散管,用过滤罩4的法兰和螺栓7把阀座压紧在阀体1的下端法兰上。
地址
100076北京市9200信箱71分箱
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