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class="NyNewsdetail_con"> <div>　　<strong><a href="http://www.heixiaozi.cn/SonList-1256166.html" target="_blank">機(jī)械隔膜計(jì)量泵</a></strong>是一種可以滿足各種嚴(yán)格的工藝流程需要，流量可以在0-100內(nèi)無(wú)級(jí)調(diào)節(jié)，用來(lái)輸送液體（特別是腐蝕性液體）一種特殊容積泵。萊克威德公司的隔膜式計(jì)量泵是計(jì)量泵的一個(gè)重要類型，通常由電機(jī)驅(qū)動(dòng)，推動(dòng)連桿導(dǎo)引器并使與連桿導(dǎo)引器相連的膜片做往復(fù)運(yùn)動(dòng).因此隔膜式計(jì)量泵輸送的液體的方式為脈沖式輸送。泵體*無(wú)泄漏，應(yīng)用于環(huán)保、制藥、化工、造紙、城市供水、污水處理等行業(yè)。</div><div>　　為了滿足安全性操作和經(jīng)濟(jì)的流體解決方案提供可靠的選擇。</div><div>　　在機(jī)械隔膜計(jì)量泵中柱塞的往復(fù)運(yùn)動(dòng)是通過(guò)柱塞與隔膜之間的液壓腔液體傳遞給隔膜的。為了維持要隔膜的正常運(yùn)動(dòng)要求液壓腔封閉空間內(nèi)液體(一般采用液壓油)的體積保持不變.這樣才能保證隔膜運(yùn)動(dòng)所形成的容積始終等于柱塞的行程容積從而保持泵的流量的穩(wěn)定；但在泵的實(shí)際運(yùn)行過(guò)程中由于柱塞密封處將不可避免產(chǎn)生泄漏，與此同時(shí)可能有氣體進(jìn)入液壓腔。此外當(dāng)補(bǔ)油過(guò)多或排出管路壓力意外升高時(shí)均可能改變液壓腔內(nèi)液體的容積，從而影響了流量的穩(wěn)定、降低了泵的計(jì)量精度.為了解決怎樣穩(wěn)定計(jì)量泵的流量、怎樣穩(wěn)定計(jì)量泵的計(jì)量精度問(wèn)題，采用了所謂的三閥裝置實(shí)際是指液壓腔配套的包括補(bǔ)償、放氣、安全保護(hù)等三種功能的裝置或裝置的組合體，根據(jù)其作用原理的不同又分為自動(dòng)補(bǔ)償和強(qiáng)制補(bǔ)償兩種三閥裝置。</div> </div> <div id="f9mxnqno" class="ly_PrevNext"> <ul> <li>上一篇：<a 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