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計量泵廠家針對計量泵閥座磨穿給出的解決方案
來源： 發(fā)布時間：2018-11-08 10:37:28 瀏覽次數(shù)：次
計量泵在熔體計量作業(yè)中，閥球在閥腔中上下運動，由限制器限制其升程，反復(fù)打開、關(guān)閉液閥，從而實現(xiàn)輸送熔體介質(zhì)的目的。在設(shè)備運轉(zhuǎn)過程中發(fā)現(xiàn)計量泵不打量，停機檢查發(fā)現(xiàn)閥球掉入液缸，閥座被磨穿，閥球卻完好無損。每次更換一個新液閥運行不到15天，閥球便會擊穿閥座而掉入液缸或管道，造成液閥失效而被迫停機更換。在熔體計量過程中，由于不能及時發(fā)現(xiàn)液閥失效，嚴(yán)重影響了生產(chǎn)物料的正常配比，從而給生產(chǎn)造成了極大損失。
巴特計量泵廠家針對磨穿原因分析：通過分析，我們認(rèn)為問題在于閥球洞座材質(zhì)不匹配。閥球的主要材質(zhì)為陶瓷，具有極強的硬度，卻沒有彈性；而閥座的材質(zhì)為35CrMoA，具有很大的硬度和彈性。在運轉(zhuǎn)過程中，閥球與閥座之間反復(fù)撞擊，致使閥座與閥球接觸面磨損極快，內(nèi)空逐漸磨大，終被閥球擊穿。
巴特計量泵廠家針對上述問題改進(jìn)措施：主要解決材質(zhì)匹配問題，增大閥球與閥座之間的彈性，延長它們之間的沖擊時間，從而減小沖擊力。因為改造閥球或同座均可達(dá)到此目的，考慮到方便程度及費用問題，鄭州巴特廠家針對閥座進(jìn)行了改造，選用尼龍材質(zhì)作為閥座襯套。改造后裝機使用，計量泵運行平穩(wěn)。使用半年后停車檢查，打開計量泵發(fā)現(xiàn)接觸面輕微磨損，預(yù)計使用壽命至少可以達(dá)到一年以上。鄭州計量泵廠家：www.www.bjxbb.com
鄭州巴特熔體泵有限公司
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