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src="https://tyunfile.71360.com/UploadFile/lscmjx/637247298412392578/7048929.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="3uaxubd" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/lscmjx/637247298412392578/7048929.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ym2qqne" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)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(chǎn)品關(guān)鍵詞：</span>連云港多級(jí)泵密封的用途和特點(diǎn)</p><p><span>***更新：</span>2020-06-18 18:28:42</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="2ahyefh" 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(jī)械制造有限公司</a></p><p><span>聯(lián)系人：</span>袁經(jīng)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(wǎng)址: </span></p><p><span>手機(jī): </span>153-66621921</p><p><span>地址: </span>高溝鎮(zhèn)高揚(yáng)民營經(jīng)濟(jì)產(chǎn)業(yè)園</p><p>[當(dāng)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="quryqs7" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="jcegnp9" class="box"><p><p> 離心泵用機(jī)械密封檢修中的幾個(gè)誤區(qū) </p> <p> 彈簧壓縮量越大密封效果越好其實(shí)不然，彈簧壓縮量過大，可導(dǎo)致摩擦副急劇磨損，瞬間燒損;過度的壓縮使彈簧失去調(diào)節(jié)動(dòng)環(huán)端面的能力，導(dǎo)致密封失效。2、動(dòng)環(huán)密封圖越緊越好其實(shí)動(dòng)環(huán)密封圈過緊有害無益。一是加劇密封圈與軸套間的磨損，過于早漏;二是增大了動(dòng)環(huán)軸向調(diào)整、移動(dòng)的阻力，在工況變化頻繁時(shí)無法適時(shí)進(jìn)行調(diào)整;三是彈簧過度疲憊易損壞;四是使動(dòng)環(huán)密封圈變形，連云港多級(jí)泵密封的用途和特點(diǎn)，影響密封效果。 3、靜環(huán)密封圈越緊越好靜環(huán)密封圈基本處于靜止?fàn)顟B(tài)，連云港多級(jí)泵密封的用途和特點(diǎn)，連云港多級(jí)泵密封的用途和特點(diǎn)，相對(duì)較緊密封效果會(huì)好些，但過緊也是有害的。一是引起靜環(huán)密封因過度變形，影響密封效果;二是靜環(huán)材質(zhì)以石墨居多，一般較脆，過度受力極易引起碎裂;三是安裝、拆卸困難，極易損壞靜環(huán)。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="連云港多級(jí)泵密封的用途和特點(diǎn)" src="https://tyunfile.71360.com/UploadFile/lscmjx/637247298412392578/7048929.jpg"></div><p> 泵用機(jī)械密封的安裝和技術(shù)要求 </p> <p> 對(duì)機(jī)、泵以及機(jī)械密封的配合部分技術(shù)要求： </p> <p> 軸彎曲度比較大不得超過0.05mm。 </p> <p> 部件內(nèi)各零件均符合圖紙要求。上緊壓蓋時(shí)應(yīng)在聯(lián)軸器找正后進(jìn)行，壓緊螺絲應(yīng)均上緊，防止法蘭面偏斜。 </p> <p> 彈簧的壓縮量按圖紙規(guī)定進(jìn)行允許誤差±2mm。軸在安裝機(jī)械密封處的振擺量不得大于0.1mm。軸的軸向竄動(dòng)量不允許大于0.5mm。 </p> <p> 安裝機(jī)械密封部位軸制造公差為h8，光潔度1.6。e.安裝動(dòng)環(huán)密封圈的軸（軸套）端部以及安靜環(huán)密封圈的密封壓蓋的端部應(yīng)做成倒角并修光。 </p> <p> 動(dòng)環(huán)安裝后必須保證動(dòng)環(huán)能在軸上靈活移動(dòng)。 </p> <p> 機(jī)械密封安裝、使用技術(shù)要領(lǐng) </p> <p> 安裝時(shí)在與密封相接觸的表面應(yīng)涂一層清潔的機(jī)械油，以便能順利裝； </p> <p> 設(shè)備的密封腔部位在安裝時(shí)應(yīng)保持清潔，密封零件應(yīng)進(jìn)行清洗，保持密封端面完好無損，防止雜質(zhì)和灰塵帶入密封部位； </p> <p> 在安裝過程中嚴(yán)禁敲打和碰擊，以免使機(jī)械密封付破損而造成密封失效； </p> <p> 設(shè)備轉(zhuǎn)軸的勁向跳動(dòng)應(yīng)≤0.04毫米，軸向竄動(dòng)量不允許大于0.1毫米； </p> <p> 安裝靜環(huán)壓蓋時(shí)，擰緊螺絲必須受力均勻，保證靜環(huán)端面與軸垂直求； </p> <p> 安裝后用手推動(dòng)動(dòng)環(huán)，能使動(dòng)環(huán)在軸上靈活移動(dòng)，并有一定彈性； </p> <p> 安裝后用手盤動(dòng)轉(zhuǎn)軸、轉(zhuǎn)軸應(yīng)無輕重感覺； </p> <p> 設(shè)備在運(yùn)轉(zhuǎn)前必須充滿介質(zhì)，以防止干摩擦而使密封失效； </p> <p> <br /> </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="連云港多級(jí)泵密封的用途和特點(diǎn)" src="https://tyunfile.71360.com/UploadFile/lscmjx/637247293743222656/8640266.jpg"></div><p> <p> 影響泵用機(jī)械密封的外部原因 </p> <p> 泵軸的軸向竄量 </p> 泵軸的撓度偏大 </p> <p> 沒有輔助沖洗系統(tǒng)或輔助沖洗系統(tǒng)設(shè)計(jì)不合理 </p> <p> 振動(dòng)偏大及消除措施 </p> <p> <p> 泵氣蝕的原因及改進(jìn)措施 </p> <p> <p> 在凝結(jié)過程中，由于體積急劇縮小，四周的液體以極大的速度沖向整個(gè)凝結(jié)空間，使泵內(nèi)造成沖擊振動(dòng)和噪音。在壓力很大、頻率很高的液體質(zhì)點(diǎn)連續(xù)沖擊下，金屬表面逐漸因疲勞而破壞，這種破壞稱為剝蝕。 </p> <p> 同時(shí)溶于液體中的氧等活潑氣體也使金屬產(chǎn)生腐蝕。由于化學(xué)腐蝕與機(jī)械剝蝕的共同作用，加快了金屬損壞的速度，從而使葉輪受到破壞，這就是汽蝕破壞，這種由于液體的汽化和凝結(jié)而產(chǎn)生的沖擊現(xiàn)象就稱為氣蝕現(xiàn)象。消除泵進(jìn)口氣蝕的措施有以下幾點(diǎn)： </p> <p> 提高泵的氣蝕性能水平，滿足現(xiàn)場(chǎng)裝置的氣蝕性能的要求。 </p> <p> 泵應(yīng)當(dāng)在低于允許吸液高度下操作，以保證整個(gè)裝置安全可靠的運(yùn)轉(zhuǎn)。 </p> <p> 采用抗氣蝕材料制造葉輪，如：2Cr13、稀土合金鑄鐵、高鎳鉻合金材料等，比普通鑄鐵的抗氣蝕能力要好得多。 </p> <p> <br /> </p> <p> <br /> </p> </p> </p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/305193.html</p></div></div></div></div></div><div id="2m8szvu" class="page-right twoColRt"><div id="zoqxzba" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ynf8ari" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 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