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- 巴特詳細(xì)剖析隔膜式計(jì)量泵常見(jiàn)故障
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隔膜計(jì)量泵的故障處理
來(lái)源： 發(fā)布時(shí)間：2015-07-20 08:59:10 瀏覽次數(shù)：次
計(jì)量泵是生活中經(jīng)常使用到的，隔膜計(jì)量泵由驅(qū)動(dòng)系統(tǒng)、曲軸箱、液壓系統(tǒng)和泵頭四部分組成。隔膜計(jì)量泵工作時(shí)，電機(jī)驅(qū)動(dòng)蝸輪蝸桿帶動(dòng)曲軸轉(zhuǎn)動(dòng)，曲軸通過(guò)連桿將旋轉(zhuǎn)運(yùn)動(dòng)轉(zhuǎn)換為柱塞的往復(fù)運(yùn)動(dòng)，柱塞的運(yùn)動(dòng)使液壓腔中的液壓油傳遞的力作用于內(nèi)、外隔膜，內(nèi)、外隔膜的往復(fù)運(yùn)動(dòng)使介質(zhì)腔容積發(fā)生變化，同時(shí)通過(guò)進(jìn)、出口單向閥的控制，使介質(zhì)從泵頭進(jìn)口吸入，從出口排出。
當(dāng)需要改變泵的流量時(shí)，旋轉(zhuǎn)手動(dòng)調(diào)節(jié)輪，通過(guò)改變曲軸系統(tǒng)的偏心距來(lái)控制柱塞行程的大小，使液壓腔受力發(fā)生變化，從而改變隔膜的往復(fù)運(yùn)動(dòng)幅度，實(shí)現(xiàn)流量的調(diào)節(jié)。
故障分析與處理方法
泵不上量或上量不足的原因與處理方法
隔膜失效或單向閥堵塞,如果泵不上量或上量不足
首先要檢查單向閥是否堵塞或外層隔膜是否失效。檢查時(shí)先拆下泵頭單向閥閥體，啟動(dòng)電機(jī)，并調(diào)節(jié)柱塞行程，觀察膜片運(yùn)動(dòng)幅度有無(wú)變化，如果膜片隨柱塞行程的大小而改變運(yùn)動(dòng)幅度，則表明膜片完好。
然后將水注入單向閥，若水流不能從入口進(jìn)入，或不能從出口流出，則說(shuō)明單向閥已堵塞，需要清理;如果水能從出口流入、入口流出，則說(shuō)明單向閥反裝，需要調(diào)整。發(fā)生單向閥堵塞的情況相當(dāng)普遍，因?yàn)镹SI配料過(guò)程中，雜質(zhì)太多。解決的方法是，將泵入口管從配料罐底引出改為從罐壁引出，將管線高度提高，使雜質(zhì)沉淀在罐底，然后定期排掉。
附油槽進(jìn)料單向閥損壞
計(jì)量泵正常工作時(shí)，液壓腔充滿液壓油。當(dāng)腔內(nèi)液壓油不足時(shí)，附油槽內(nèi)的液壓油會(huì)通過(guò)進(jìn)料閥補(bǔ)充其不足，如果該閥損壞，就會(huì)導(dǎo)致膜片停止運(yùn)動(dòng)或運(yùn)作幅度不夠，從而引起泵不上量或上量不足。附油槽進(jìn)料單向閥失效的原因一般有三種：閥芯與閥座配合不好;閥體密封環(huán)失效;閥彈簧失效或其預(yù)緊力不當(dāng)。
鄭州巴特熔體泵有限公司
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