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href="/article.html">技術(shù)文章</a> > <span>計(jì)量泵的種類和特點(diǎn)</span></p> </div> <div id="at5xgcwsgw" class="ly_NyNewsdetail"> <h1 class="NyNewsdetail_title">計(jì)量泵的種類和特點(diǎn)</h1> <div id="at5xgcwsgw" class="NyNewsdetail_tips">更新時(shí)間：2021-01-21 點(diǎn)擊次數(shù)：5175</div> <div id="at5xgcwsgw" class="NyNewsdetail_con"> <p>計(jì)量泵按液力端結(jié)構(gòu)形式分，可分為柱塞式計(jì)量泵和隔膜式計(jì)量泵，其中，柱塞式計(jì)量泵分為普通有閥泵和無閥泵兩種；隔膜式計(jì)量泵分為機(jī)械隔膜式計(jì)量泵、液壓隔膜計(jì)量泵和波紋管計(jì)量泵。計(jì)量泵按驅(qū)動(dòng)形式分，又可分為電磁驅(qū)動(dòng)計(jì)量泵和電動(dòng)機(jī)驅(qū)動(dòng)計(jì)量泵，此外，還有采用液壓驅(qū)動(dòng)、氣動(dòng)等驅(qū)動(dòng)形式的計(jì)量泵。</p><p><img alt="" src="https://img79.hbzhan.com/2/20201226/637445950304186108545.png" style="width: 594px; height: 304px;" /><br />1）柱塞式計(jì)量泵：柱塞式計(jì)量泵主要分為有閥泵和無閥泵兩種（圖8-23）。柱塞式計(jì)量泵因其結(jié)構(gòu)簡單和耐高溫高壓等優(yōu)點(diǎn)而被廣泛應(yīng)用于石油化工領(lǐng)域。針對(duì)高粘度介質(zhì)在高壓力工況下普通柱塞泵的不足，一種無閥旋轉(zhuǎn)柱塞式計(jì)量泵受到愈來愈多的重視，被廣泛應(yīng)用于糖漿、巧克力和石油添加劑等高粘度介質(zhì)的計(jì)量添加。因被計(jì)量介質(zhì)和泵內(nèi)潤滑劑之間無法實(shí)現(xiàn)*隔離這一結(jié)構(gòu)性缺點(diǎn)，柱塞式計(jì)量泵在高防污染要求流體輸送計(jì)量應(yīng)用中受到諸多限制。<br />2）隔膜式計(jì)量泵：顧名思義，隔膜式計(jì)量泵就是在柱塞的前端加上了柔性隔膜，由于隔膜的隔離作用，在結(jié)構(gòu)上真正實(shí)現(xiàn)了被輸送介質(zhì)的無泄漏。這在腐蝕性介質(zhì)、含固體顆粒介質(zhì)的輸送和高防污染要求的場合非常適用，并且隨著高科技的結(jié)構(gòu)設(shè)計(jì)和新型材料的選用已經(jīng)大大提高了隔膜的使用壽命，加上復(fù)合材料優(yōu)異的耐腐蝕特性，隔膜式計(jì)量泵目前已經(jīng)成為流體計(jì)量應(yīng)用中的主力泵型。在隔膜式計(jì)量泵家族成員里，又有機(jī)械隔膜式計(jì)量泵（圖8-24）、液壓隔膜計(jì)量泵（圖8-25）和波紋管計(jì)量泵三種。<br />機(jī)械隔膜式計(jì)量泵的隔膜是與柱塞機(jī)構(gòu)連接，無液壓油系統(tǒng)，柱塞的前后移動(dòng)直接帶動(dòng)隔膜前后撓曲變形。<br />液壓隔膜計(jì)量泵是通過液壓油均勻地驅(qū)動(dòng)隔膜，克服了機(jī)械直接驅(qū)動(dòng)方式下泵隔膜受力過分集中的缺點(diǎn)，提升了隔膜壽命和工作壓力上限。為了克服單隔膜式計(jì)量泵可能出現(xiàn)的因隔膜破損而造成的工作故障，有的計(jì)量泵配備了隔膜破損傳感器，實(shí)現(xiàn)隔膜破裂時(shí)自動(dòng)連鎖保護(hù)；具有雙隔膜結(jié)構(gòu)泵頭的計(jì)量泵進(jìn)一步提高了其安全性，適合對(duì)安全保護(hù)特別敏感的應(yīng)用場合。<br />波紋管計(jì)量泵與機(jī)械隔膜式計(jì)量泵相似，只是以波紋管取代隔膜，柱塞端部與波紋管連接在一起，當(dāng)柱塞往復(fù)運(yùn)動(dòng)時(shí)，使波紋管被拉伸和壓縮，從而改變液缸腔內(nèi)的容積，以達(dá)到輸液與計(jì)量的目的。<br />3）電磁驅(qū)動(dòng)計(jì)量泵：作為計(jì)量泵的一種，電磁驅(qū)動(dòng)式計(jì)量泵以電磁鐵產(chǎn)生脈動(dòng)驅(qū)動(dòng)力，省卻了電動(dòng)機(jī)和變速機(jī)構(gòu)，使得系統(tǒng)小巧緊湊，是小流量低壓計(jì)量泵的重要分支（圖8-26）。<br />4）電動(dòng)機(jī)驅(qū)動(dòng)計(jì)量泵：作為計(jì)量泵的主要泵型，其動(dòng)力驅(qū)動(dòng)裝置是電動(dòng)機(jī)，電動(dòng)機(jī)輸出轉(zhuǎn)矩以后經(jīng)由減速機(jī)構(gòu)減速，再由機(jī)械連桿系統(tǒng)帶動(dòng)柱塞或隔膜（活塞）實(shí)現(xiàn)往復(fù)運(yùn)動(dòng)，從而實(shí)現(xiàn)被輸送流體吸入與排出。<br />機(jī)動(dòng)泵的傳動(dòng)端，通常由減速機(jī)構(gòu)、調(diào)節(jié)機(jī)構(gòu)以及曲柄連桿機(jī)構(gòu)等部分組成。<br />減速機(jī)構(gòu)：通常采用蝸桿減速機(jī)構(gòu)，也有采用擺線針輪減速機(jī)構(gòu)和減速軸承等減速形式。有時(shí)，為了實(shí)現(xiàn)通過改變往復(fù)運(yùn)動(dòng)頻率來達(dá)到調(diào)節(jié)流體輸送量之目的，也有采用各種結(jié)構(gòu)的無級(jí)變速機(jī)構(gòu)來代替減速結(jié)構(gòu)。<br />曲柄連桿機(jī)構(gòu)及調(diào)節(jié)機(jī)構(gòu)：由于計(jì)量泵的功率比較小，行程調(diào)節(jié)機(jī)構(gòu)大都布置在曲柄連桿機(jī)構(gòu)內(nèi)，常見的有偏心滑塊調(diào)節(jié)機(jī)構(gòu)（即N型軸、L型軸）、彈簧凸輪機(jī)構(gòu)和改變蝸輪傾斜角及改變連桿支點(diǎn)的結(jié)構(gòu)，這些都是通過改變行程長度而達(dá)至調(diào)節(jié)流體輸送量目的的。</p> </div> <div id="at5xgcwsgw" class="ly_PrevNext"> <ul> <li>上一篇：<a href="/Article-772167.html">干粉投加裝置安裝及操作調(diào)試</a></li> <li>下一篇：<a href="/Article-770832.html">加藥裝置如何控制藥劑的投加量？</a></li> </ul> </div> </div>  <div id="at5xgcwsgw" class="ly_foot"> <div id="at5xgcwsgw" class="ly_Ftmain"> <div id="at5xgcwsgw" class="ly_Ftcon"> <div id="at5xgcwsgw" class="ly_FtLeft"> <ul> <li> <div id="at5xgcwsgw" class="Ft_tit">關(guān)于我們</div> <a href="/aboutus.html" rel="nofollow">公司簡介</a> <a href="/news.html">新聞中心</a> <a href="/article.html">技術(shù)文章</a> 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