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<div id="tq6ztn8r" class="ly_NyNewsdetail"> <h1 class="NyNewsdetail_title">氣動隔膜閥的優(yōu)勢及特點</h1> <div id="tq6ztn8r" class="NyNewsdetail_tips">更新時間：2021-04-07 點擊次數(shù)：2886</div> <div id="tq6ztn8r" class="NyNewsdetail_con"> <div>　　<strong>氣動隔膜閥</strong>有兩個主要優(yōu)勢：其一是該閥不需要單獨的閥桿填料密封結(jié)構(gòu)，隔膜在切斷介質(zhì)的同時起到了閥桿的密封作用，其二是柔韌性很強(qiáng)的隔膜關(guān)閉可靠，甚至對污液都能做到良好的切斷。因此，操縱機(jī)構(gòu)和介質(zhì)通道*隔開，使氣動隔膜閥不僅能適用于食品工業(yè)和醫(yī)藥衛(wèi)生工業(yè)，而且還適用于一些難以輸送的介質(zhì)和危險性較大的介質(zhì)。<br /> </div><div>　　通常，使用條件或在要求密封性能嚴(yán)格、泥漿介質(zhì)、磨損、輕型結(jié)構(gòu)、低壓截止(壓差小)向大氣少量滲漏、磨蝕性的介質(zhì)時推薦選用隔膜閥。在雙位調(diào)節(jié)、節(jié)流、通道縮口、低噪聲、有氣穴和汽化現(xiàn)象、操縱扭矩小的場合可以選用隔膜閥。在高溫介質(zhì)、高壓介質(zhì)、高壓截止(壓差大)、啟閉動作快、結(jié)構(gòu)長度短的條件下晝不選擇用隔膜閥，但金屬隔膜閥除外。<br /> </div><div>　　<strong>氣動隔膜閥</strong>特點：<br /> </div><div>　　隔膜把下部閥體內(nèi)腔與上部閥蓋內(nèi)腔隔開，使位于隔膜上方的閥桿、閥瓣等零件不受介質(zhì)腐蝕，省去了填料密封結(jié)構(gòu)，且不會產(chǎn)生介質(zhì)外漏。<br /> </div><div>　　1、采用橡膠或塑料等軟質(zhì)密封制作的隔膜，密封性較好。由于隔膜為易損件，應(yīng)視介質(zhì)特性而定期更換。<br /> </div><div>　　2、受隔膜材料限制，隔膜閥適用于低壓和溫度相對不高的場合。<br /> </div><div>　　3、隔膜閥按結(jié)構(gòu)形式可分為：屋式、直流式、截止式、直通式、閘板式和直角式六種；連接形式通常為法蘭連接；按驅(qū)動方式可分為手動、電動和氣動三種，其中氣動驅(qū)動又分為常開式、常閉式和往復(fù)式三種。<br /> </div><div>　　4.一般不宜用于溫度高于60度及輸送有機(jī)溶劑和強(qiáng)氧化介質(zhì)的管路中，也不宜在較高壓力的管路中使用氣動隔膜閥。</div> </div> <div id="tq6ztn8r" class="ly_PrevNext"> <ul> <li>上一篇：<a href="/szhcy-Article-2604304/">全自動純化水設(shè)備自動濾芯有哪些作用?</a></li> <li>下一篇：<a href="/szhcy-Article-2601272/">反滲透純水設(shè)備售后維護(hù)和保養(yǎng)有哪些?</a></li> </ul> </div> </div>   <div id="tq6ztn8r" class="foot_box"> <div id="tq6ztn8r" class="foot_t"> <div id="tq6ztn8r" class="w1200"> <a href="/">網(wǎng)站首頁</a>　|　<a href="/aboutus.html">關(guān)于我們</a>　|　<a href="/products.html">產(chǎn)品中心</a>　|　<a href="/news.html">新聞動態(tài)</a>　|　<a href="/article.html">技術(shù)文章</a>　|　<a href="/honor.html">榮譽(yù)資質(zhì)</a>　|　<a href="/order.html" target="_blank">在線留言</a>　|　<a href="/contact.html">聯(lián)系我們</a> <span><a href="javascript:;" class="toTop"></a></span> </div> </div> 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