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<span class="sidenav-dropdown-icon" data-sidenav-dropdown-icon><i class="material-icons">arrow_drop_up</i></span> </a> <ul class="sidenav-dropdown" data-sidenav-dropdown> </ul> </li> </ul> </nav> <script> //手機版導航 $('[data-sidenav]').sidenav(); </script> <div class="fainro-banner"> <img src="/static/upload/image/20210821/1629545122566287.jpg" class="pc"> <img src="/static/upload/image/20210821/1629545122566287.jpg" class="wap"> </div> <div class="fainro-list"> <div class="fainro-view"> <h1>調節超純水機流量使用截止閥而不是閘閥</h1><br> <span>點擊次數：2141更新時間：2021-08-21</span> <hr> <div class="detail"><p style="text-align: left; line-height: 2em;"><span style="font-size:18px;">調節超純水機流量使用截止閥而不是閘閥</span></p> <p style="text-align: left; line-height: 2em;"><span style="font-size:18px;">在超純水處理系統中，我們經常需要調節一些進水和出水的流量和壓力，我們都是使用的截止閥，而不是閘閥。這是因為它們的一些工作原理和外形以及維護、流阻都不同。</span></p> <p style="text-align: left; line-height: 2em;"><span style="font-size:18px;">1、工作原理：運動軌跡不同，截止閥在打開或者關閉時候，手輪與閥桿是一起做旋轉和上升或者下降運行，它們是一同運動的。而閘閥不同，閘閥的手輪在打開或者關閉時，手輪旋轉而閥桿只是上升或者下降運動。這也決定了它們的工作性質和用途的不同；</span></p> <p style="text-align: left; line-height: 2em;"><span style="font-size:18px;">2、外形不同：閘閥一般比截止閥短而高，所以明桿需要更多的空間來安裝。閘閥的密封面在其開啟或者關閉時，閥芯和閥座始終互相接觸和摩擦，所以容易磨損，但是閘閥的密封面有一定的自密封能力，從而能夠達到密而不漏，其介質流動一般沒有方向。但是因為其密封面容易磨損問題，而導致其在用途中有很大的局限性。截止閥只有在完全關閉時候，閥芯才會與閥座互相接觸，它們彼此的相對滑動較小，密封圈磨損也相對較小，但是在安裝時候需要注意其介質流動有方向。一般小口徑的管路一般采用下方介質流入；</span></p> <p style="text-align: left; line-height: 2em;"><span style="font-size:18px;">3、行程與維修方式不同：閘閥的行程要遠大于截止閥的行程。還有維修時候，閘閥不能夠在現場管道上直接維修更換閥芯閥座，而截止閥可以直接更換；</span></p> <p style="text-align: left; line-height: 2em;"><span style="font-size:18px;">4、流動阻力不同：截止閥的流動阻力系數為3.5-4.5，而閘閥則是它的四分之一左右。所以截止閥開啟或者關閉力小。閘閥一般適合使用在不需要經常打開或者關閉的，經常保持全開或者全閉的情況下使用，不適合在調節流量處使用，像一般家庭的自來水總開關一般使用的就是閘閥。而截止閥則不一樣，其平衡力大，力矩和驅動力也相對較大，適合用在流體調節流量和節流中使用。</span></p><p style="text-align: center;"><img alt="" src="/static/upload/image/20210821/1629540256214166.jpg" 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