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style="font-size:14px">計量泵可以在室外應用，但是盡量不要裝在可能減少壽命的條件(如陽光直射、風吹、雨淋等)下。</span></li><li><span style="font-size:14px">有些化學藥品在稀釋時發(fā)生吸熱反應，可導致泵頭內(nèi)結(jié)冰，冬天氣溫太低也會結(jié)冰，在這種情況下需要有輔助加熱和保溫裝置。</span></li><li><span style="font-size:14px"><strong>計量泵</strong>盡量靠近加藥點，管路過長會增加壓頭損失，影響計量泵的正常工作。</span></li></ul><p><span style="font-size:14px">⑵管路安裝</span></p><ul><li><span style="font-size:14px">在排液口端部應安裝安全閥。</span></li><li><span style="font-size:14px">泵運行時會產(chǎn)生振動，需固定好管路。</span></li><li><span style="font-size:14px">必要時安裝阻尼-緩沖管件(如氣囊)，以減少脈動。</span></li><li><span style="font-size:14px"><strong>計量泵</strong>出廠時在進、出口端裝配有保護蓋，現(xiàn)場安裝連接管線務必卸下，以免計量泵工作后流路不通，憋壓引起泵損壞。</span></li><li><span style="font-size:14px">藥液吸入口軟管和帶有過濾網(wǎng)的底閥妥善置于藥箱底部，凡螺紋連接部分，宜用手擰緊，切勿用管鉗一類工具，防止損壞塑料管件。</span></li></ul><p><span style="font-size:14px">⑶安裝抗虹吸閥</span></p><ul><li><span style="font-size:14px">抗虹吸閥應用場合。出口端常壓且高度低于加藥箱的液面或加藥口處于負壓狀態(tài)會產(chǎn)生虹吸現(xiàn)象，，流體會自行流出而不受控，泵的實際排液量大于泵的額定流量。</span></li><li><span style="font-size:14px">抗虹吸閥安裝注意事項</span></li></ul><ol style="list-style-type:lower-alpha"><li><span style="font-size:14px">在工藝管路的加藥口處焊接一段1/2內(nèi)螺紋短管，在抗虹吸閥的外螺紋上纏密封帶，擰入短管中?？购缥y出口端應插入至工藝管道中心線位置。當工藝管徑較小時，可將抗虹吸閥的出口管剪短。</span></li><li><span style="font-size:14px">安裝固緊件時，可以用扳手等工具擰緊，但注意切勿損毀螺紋。</span></li></ol><p><span style="font-size:14px"> 有的<strong>計量泵</strong>配有鴨嘴形噴射器，其作用與安裝方式類似。為便于維修，宜在加藥口安裝 1/2閥門，閥門材質(zhì)應防腐蝕。</span></p><p><span style="font-size:14px">⑷吸入端管路</span></p><ul><li><span style="font-size:14px">泵與加藥箱之間的距離要盡可能短，吸人端管路太長，會產(chǎn)生氣穴現(xiàn)象，破壞流量的連續(xù)性和穩(wěn)定性。<strong>小型計量泵</strong>和小容量(500L以下)藥箱的組合，可將<strong>計量泵</strong>安裝于藥箱上蓋上。</span></li><li><span style="font-size:14px">采用隨機附件，包括：軟管、管接頭和帶有過濾網(wǎng)的底閥。</span></li></ul><p><span style="font-size:14px">⑸電氣接線要點。</span></p><p><span style="font-size:14px"> 電源線必須具有獨立的接地保護網(wǎng)和保護接地端子，安裝漏電保護器。對于由電機拖動的<strong>機械隔膜式計量泵</strong>尤其重要，因為這類計量泵的泵體幾乎都是金屬材質(zhì)，一旦發(fā)生漏電，會對人身造成傷害。</span></p><p><span style="font-size:14px"> 加藥裝置(含計量泵)的供電應自低壓配電柜專門引一支路，避免與其他用電設(shè)備合用一路電源。在電源輸出端要安裝接地故障斷路器。</span></p><p><span style="font-size:14px"> 確認電源電壓正確與否，不要超過額定工作電壓。</span></p><p><span style="font-size:14px"> 如果安裝地點在閃電多發(fā)地帶，在電源和信號線上要安裝避雷器。</span></p><p><span style="font-size:14px"> 通過電源線的干擾信號會引起故障，甚至損壞泵，要安裝一只電源濾波器或隔離變壓器；不要使用基于晶閘管的輸出非正弦波形的調(diào)節(jié)器作為電源。</span></p> </div> <div id="44fkimplw" class="ly_PrevNext"> <ul> <li>上一篇：<a href="/szhcy-Article-1975183/">明渠式流量計常用的液（水）位計</a></li> <li>下一篇：<a href="/szhcy-Article-1974366/">什么是水質(zhì)自動監(jiān)測站</a></li> </ul> </div> </div>   <div id="44fkimplw" class="foot_box"> <div id="44fkimplw" class="foot_t"> <div id="44fkimplw" 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 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