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src="https://tyunfile.71360.com/UploadFile/lscmjx/637247293279589844/7625641.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="8k7c3s3" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/lscmjx/637247293279589844/7625641.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="bug984b" class="content"><p><span>需求數量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產品關鍵詞：</span>蘇州葉輪泵密封生產廠家,封</p><p><span>***更新：</span>2020-11-01 10:17:41</p><p><span id="click" >瀏覽次數：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="33sud7c" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">漣水創(chuàng)密機械制造有限公司</a></p><p><span>聯(lián)系人：</span>袁經理</p><p><span>郵箱: </span>lscmjx@163.com</p><p><span>電話: </span>15250888877</p><p><span>傳真: </span>153_</p><p><span>網址: </span></p><p><span>手機: </span>153-66621921</p><p><span>地址: </span>高溝鎮(zhèn)高揚民營經濟產業(yè)園</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="qpb9pml" class="page-proshow02"><p class="title">詳細說明</p><div id="mac9r7y" class="box"><p><p> <br /> </p> <p> 化工泵油封是一種自緊式唇狀密封，其結構簡單，尺寸小，成本低廉，維護方便，阻轉矩較小，既能防止介質泄漏，也能防止外部塵土和其它有害物質侵入，蘇州葉輪泵密封生產廠家，而且對磨損有一定的補償能力，但不耐高壓，所以一般用在低壓場合的化工泵上。 </p> <p> 化工泵依靠離心原理來抽取液體物料，特殊材料制成的化工泵適用于瓶、桶、缸、池或其他容器中抽取腐蝕性液體。由于化工泵所抽取的介質有腐蝕、揮發(fā)、等危險性的存在，對泵體的密封性能要求，要比其他種類的泵高很多。 </p> <p> 化工泵油封應安裝在制造精度為h8～h9，表面粗糙度為1.6～0.8μm且經過表面硬化處理的軸上。密封介質不應含有固體微粒和雜質，否則會造成油封和軸的迅速磨損而使密封失效。 </p> <p> 在選擇此種密封方法是，要充分考慮化工泵所輸送到物料的性能和要求，以避免不必要的泄漏，防止意外的發(fā)生，蘇州葉輪泵密封生產廠家，蘇州葉輪泵密封生產廠家。 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> 各種密封其性能影響因素是不同的，如機械密封(填料密封等)影響因素有溫度、介質、磨損、所承受壓力等。蘇州葉輪泵密封生產廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州葉輪泵密封生產廠家,封" src="https://tyunfile.71360.com/UploadFile/lscmjx/637247293279589844/7625641.jpg"></div><p> 螺紋密封 </p> <p> 螺紋密封在泵上一般有兩種形式，一種是螺紋聯(lián)接墊片密封，一種是螺紋加填充濟密封，二者皆用于小直徑螺紋連接的密封場合。螺紋聯(lián)接墊片密封的密封件是墊片，而螺紋只起提供壓緊力的作用。密封的效果除了墊片的本身性能外。密封面的粗糙度以及與螺紋孔的相對幾何位置精度對密封效果影響也很大。于由密封墊片在擰緊螺紋時不僅承受壓緊力，還承受扭矩，使墊片產生變形甚至損壞，因此，當墊片為非金屬時，一般只適用于壓力不高的場合，如果墊片為金屬則適用壓力可達30Mpa以上。 </p> <p> 泵上經常使用的絲堵，則是另一種螺紋密封形式。由于考慮到絲堵制造的經濟性，一般單靠螺紋的配合不能起到密封作用，往往用生膠帶，密封膠等填充物填充螺紋的密封間隙。其承壓能力取決于螺紋的制造精度和材質，與絲堵和螺紋孔的配合形式沒有關系。螺紋孔與絲堵無論采用"錐對錐"還是"柱對錐"，密封效果相同，只是使用地域不同而已。我國目前兩種形式同等采用。影響密封效果的常見原因是在加工螺紋底孔時尺寸偏大，使螺紋牙形變短，牙頂變寬，造成密封面減小，當密封壓力升高后產生泄漏，甚至將絲堵壓出。常州多級泵密封廠家推薦機械密封的正常運行必須具備以下條件：泵軸的竄量不能太大。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州葉輪泵密封生產廠家,封" src="https://tyunfile.71360.com/UploadFile/lscmjx/637247298359511719/4792927.jpg"></div><p> 有害介質時為了取得更好的密封效果，采用雙重密封，根據密封液系統(tǒng)壓力可分為有壓雙封(雙端面機械密封)和無壓雙封(串聯(lián)式機械密封)。 </p> <p> 有壓雙封密封液系統(tǒng)的壓力一般要比一級密封前的壓力高0.01-0.03MPa。這樣一級密封泄漏時，密封液會進入泵內，確保了泵內介質不會泄漏到外界。由于密封液進入泵內，密封液系統(tǒng)壓力、液位降低，可以實現(xiàn)密封的泄漏監(jiān)測和報警。 </p> <p> 無壓雙封密封系統(tǒng)內的壓力一般為常壓或微壓，低于一級密封前的密封腔壓力。當一級密封泄漏時，泵內介質會進人密封液系統(tǒng)，導致密封液系統(tǒng)的壓力和液位升高，可以通過壓力開關或液位開關實現(xiàn)泄露監(jiān)測和報警。通過密封液系統(tǒng)來監(jiān)測雙端面機械密封失效與否，也是其區(qū)別于單端面機械密封**主要的形式之一。 </p> <p> <br /> </p><p> 為保證機械密封在高溫環(huán)境下正常工作，可以采取如下措施。 </p> <p> 給機封增加冷卻沖洗裝置。 </p> <p> 選擇耐高溫的材料，根據不同的工作溫度選用不同的材料。丁腈橡膠溫度上限為80℃，硅橡膠和氟橡膠為200℃，聚四氟乙烯為250℃。另外，機械密封中的非金屬摩擦副多采用石墨浸漬材料制成，所以也要根據不同的工作溫度選用不同種類的浸漬石墨。一般浸巴氏合金石墨適用溫度范圍小于150℃，浸樹脂石墨適用溫度范圍為170~200℃，浸銅、鋁、鉛的石墨可在小于400℃的工作條件下使用。動環(huán)組件應盡可能選用膨脹系數相近的材料，以防止高溫下動環(huán)和動環(huán)座的連接松動。 </p> <p> 選擇金屬波紋管機械密封。金屬波紋管密封近年來在高溫密封中使用很多，并且取得了很好的效果。在該種機封中，金屬波紋管取代了普通機封中的彈簧，省去了動環(huán)輔助密封圈，不需要克服動環(huán)補償時與轉軸的摩擦和磨損，因此在高溫下使用，一般都能取得不錯的效果。 </p> <p> <br /> 摩擦副所用的材料耐磨性差、摩擦系數大、端面比壓（包括彈簧比壓）過大等,都會縮短機械密封的使用壽命。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州葉輪泵密封生產廠家,封" src="https://tyunfile.71360.com/UploadFile/lscmjx/637247293921376953/5749071.jpg"></div><p> 雙重密封和液體阻隔裝置 </p> <p> 采用雙重密封面的密封來代替單一的密封件具有更高程度的防漏特性。這類雙重密封大都應用于揮發(fā)性強、危險和潤滑性很差的液體。 </p> <p> <span style="font-size:12px;"> 雙重密封一般有三種設計型式，每種型式都要求在雙重密封面之間使用一種液體阻隔系統(tǒng)，以防止液體或氣體外泄。比較常用的低成本雙重密封是一種以背靠背方式安裝的密封，其旋轉密封面以相反的方向排列。它往往需要一種阻隔液體，其壓力應高于填料盒壓力，大約為20psi，這樣就可保證內部的密封始終能得到阻隔液體的潤滑，而且也可保證密封面達到一定的密封壓力。</span> 在對該設備進行維護的過程中，也應明確彈簧的旋向，一旦出現(xiàn)安裝錯誤，將很容易造成泄漏問題。常州水泵密封銷售價格</p><p style="text-indent:25px">由于介質和工作條件的不同，機械密封對耐高溫性能、耐高壓性能、耐腐蝕性能往往有著比較大的差距。蘇州葉輪泵密封生產廠家</p><p> 低溫下的機械密封 </p> <p> 在煉油化工裝置中，低溫輸送的介質一般都具有豁度小、潤滑性差、容易氣化的特點，而且介質在氣化時大量吸熱，使周圍溫度急劇下降，造成空氣中水氣的凝結，導致端面及其周圍結冰，使端面貼合不嚴引起泄漏。同時，因潤滑性差，端面摩擦產生的熱量較多，若不能及時轉移，必然會加劇端面處的氣化，造成惡性循環(huán)，加速密封面的早期失效。另外，低溫密封的輔助密封圈在低溫下發(fā)硬失彈也容易導致泄漏。 </p> <p> <span style="font-size:12px;">對低溫密封，除了選擇合適的輔助密封圈材質外，還要注意以下幾點。</span> </p> <p> 改進密封結構及正確選擇摩擦副材料。實踐證明，在靜環(huán)表面開圓弧形凹槽可形成流體動力密封，增加流體膜承載能力，改善端面潤滑條件，有效延長機封工作壽命。在端面配對方面，碳化鎢一M106K石墨組對（即動、靜環(huán)材料）一般要優(yōu)于其他材料，因為其潤滑性好，摩擦系數低，導熱性也比較好。 </p> <p> 選擇合適的端面比壓。低溫密封由于端面潤滑性差，容易發(fā)生氣化、結冰，所以在保證密封可靠的前提下，端面比壓可適當減小。一般機械密封比壓值推薦為0.29-0.59MPa，對低溫密封可取其下限。對金屬波紋管機械密封，由于動環(huán)沒有軸向摩擦，端面比壓甚至可以低于下限。 </p> <p> <br /> 蘇州葉輪泵密封生產廠家</p><p style="text-indent:25px">漣水創(chuàng)密機械制造有限公司位于江蘇省淮安市漣水縣高溝鎮(zhèn)高揚民營經濟產業(yè)園，是一家專業(yè)的漣水創(chuàng)密機械制造有限公司產品包括:輕型密封、中型密封、重型密封，廣泛應用于石油、化工、電力、造紙，食品，機械密封件來料加工（塑料機械密封件除外）、銷售；機械配件、汽車配件銷售；自營和代理各類商品及技術的進出口業(yè)務，公司。在創(chuàng)密機械制造近多年發(fā)展歷史，公司旗下現(xiàn)有品牌創(chuàng)密機械制造等。公司堅持以客戶為中心、漣水創(chuàng)密機械制造有限公司產品包括:輕型密封、中型密封、重型密封，廣泛應用于石油、化工、電力、造紙，食品，機械密封件來料加工（塑料機械密封件除外）、銷售；機械配件、汽車配件銷售；自營和代理各類商品及技術的進出口業(yè)務，市場為導向，重信譽，保質量，想客戶之所想，急用戶之所急，全力以赴滿足客戶的一切需要。自公司成立以來，一直秉承“以質量求生存，以信譽求發(fā)展”的經營理念，始終堅持以客戶的需求和滿意為重點，為客戶提供良好的輕型密封，中型密封，重型密封，小型水泵，從而使公司不斷發(fā)展壯大。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1802523.html</p></div></div></div></div></div><div id="ge38n48" 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