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src="https://tyunfile.71360.com/UploadFile/ygebgm/637324990514443359/8565359.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="l2neg7t" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/ygebgm/637324990514443359/8565359.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="3bnulxo" 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>濰坊ih泵用機(jī)械密封,泵用機(jī)械密封</p><p><span>***更新：</span>2020-10-17 15:10:28</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="s8bn7ic" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">伊格爾博格曼機(jī)械密封（張家港）有限公司</a></p><p><span>聯(lián)系人：</span>閆女士</p><p><span>郵箱: </span>eaglebugmann@qq.com</p><p><span>電話: </span>18013293108</p><p><span>傳真: </span>0512_</p><p><span>網(wǎng)址: </span>http://eaglebugmann.com</p><p><span>手機(jī): </span>0512-58756006</p><p><span>地址: </span>德積福民村（天霸路）</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="azbihsz" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="lu8fw78" class="box"><p><p> 為了使機(jī)械密封做到密封性能可靠，使用壽命長(zhǎng)，對(duì)其零件的尺寸、配合、形位公差等均有相應(yīng)的要求。關(guān)鍵尺寸一定要嚴(yán)格按公差要求加工，非關(guān)鍵尺寸在不影響密封性能和安裝尺寸的前提下，可適當(dāng)降低要求，這對(duì)于降低成本、普及推廣機(jī)械密封技術(shù)均有好處，濰坊ih泵用機(jī)械密封。根據(jù)國(guó)內(nèi)技術(shù)標(biāo)準(zhǔn)規(guī)定的機(jī)械密封技術(shù)條件及制造水平，濰坊ih泵用機(jī)械密封，參考國(guó)外同類產(chǎn)品的加工尺寸及精度要求，對(duì)常用機(jī)械密封零件的公差配合及技術(shù)要求介紹如下。一、機(jī)械密封零件的公差與配合關(guān)于機(jī)械密封零件的公差與配合，以內(nèi)裝式泵用機(jī)械密封零件為例作介紹，其他結(jié)構(gòu)類型機(jī)械密封的主要零件配合及公差均可參考，濰坊ih泵用機(jī)械密封，并根據(jù)情況做適當(dāng)調(diào)整，機(jī)械密封零件的公差與配合如圖9-1所示。①安裝機(jī)械密封軸徑公差；②彈簧座內(nèi)徑與軸公差；③推環(huán)內(nèi)徑與軸的配合公差；④推環(huán)接觸密封圈處端面的內(nèi)徑偏差；⑤推環(huán)接觸密封圈處端面的外徑偏差；⑥傳動(dòng)套內(nèi)徑公差；⑦動(dòng)環(huán)安裝密封圈處內(nèi)徑公差；⑧動(dòng)環(huán)內(nèi)徑與軸的配合公差；⑨傳動(dòng)套傳動(dòng)的動(dòng)環(huán)外徑公差；⑩撐環(huán)內(nèi)徑公差；?撐環(huán)外徑公差；?鑲環(huán)結(jié)構(gòu)配合公差（此公差*供參考，制造時(shí)應(yīng)根據(jù)實(shí)際情況核算確定公差尺寸）；?靜環(huán)外徑與壓蓋（或殼體）的配合公差；?靜環(huán)內(nèi)徑偏差；?靜環(huán)尾部與靜環(huán)座。北京渣漿泵用機(jī)械密封型號(hào)。濰坊ih泵用機(jī)械密封</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="濰坊ih泵用機(jī)械密封,泵用機(jī)械密封" src="https://tyunfile.71360.com/UploadFile/ygebgm/637324990514443359/8565359.png"></div><p> 泵吸入口處和葉片背面等處聚集氣體會(huì)導(dǎo)致流阻阻力增大甚至斷流，繼而使工況惡化，必需汽蝕量增加，氣體密度小，比容大，可壓縮性大，流變性強(qiáng)，離心力小，轉(zhuǎn)換能量性能差是引起泵工況惡化的主要原因。試驗(yàn)表明，當(dāng)液體中的氣量（體積比）達(dá)到3%左右時(shí)，泵的性能將出現(xiàn)陡降，當(dāng)入口氣體達(dá)20%～30%時(shí)，泵完全斷流。離心泵允許含氣量（體積比）極限小于5%。葉輪形式因?yàn)槭沂瘽{液中含有氯離子(20000～60000)X10-6，pH值～7之間，濃度20%～35%之間，高達(dá)60%。脫硫泵的過(guò)流部件，必須選擇具有抗磨損和抗腐蝕的材料，(公眾號(hào):泵管家)有襯膠、襯陶瓷、全金屬合金等材質(zhì)。脫硫泵一般采用懸臂式單級(jí)單吸離心泵，比轉(zhuǎn)速一般在250～350。葉輪可按照一般離心泵的方法設(shè)計(jì)，分閉式葉輪、開(kāi)式葉輪等。考慮到電廠需要比較長(zhǎng)的連續(xù)運(yùn)行時(shí)間，故對(duì)泵的汽蝕和效率都有一定的要求。一般帶背葉片，降低密封腔壓力，降低磨損。由于介質(zhì)有強(qiáng)腐蝕性,葉輪的防腐措施：1.使用高分子材料包覆葉輪，可以保護(hù)葉輪不受腐蝕2.使用特種金屬制成3.使用高分子材料制作葉輪。目前國(guó)際上常用的是高分子材料包覆葉輪，具有非常好的耐磨耐腐蝕性。采用可調(diào)軸承座使軸向位置可調(diào)節(jié)。黑龍江泵用機(jī)械密封維修內(nèi)蒙古襄樊五二五泵用機(jī)械密封型號(hào)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="濰坊ih泵用機(jī)械密封,泵用機(jī)械密封" src="https://tyunfile.71360.com/UploadFile/ygebgm/637324990697626953/3923738.png"></div><p> ***節(jié)機(jī)械密封原理機(jī)械密封是一種旋轉(zhuǎn)機(jī)械的軸封裝置。比如離心泵、離心機(jī)、反應(yīng)釜和壓縮機(jī)等設(shè)備。由于傳動(dòng)軸貫穿在設(shè)備內(nèi)外，這樣，軸與設(shè)備之間存在一個(gè)圓周間隙，設(shè)備中的介質(zhì)通過(guò)該間隙向外泄漏，如果設(shè)備內(nèi)壓力低于大氣壓，則空氣向設(shè)備內(nèi)泄漏，因此必須有一個(gè)阻止泄漏的軸封裝置。軸封的種類很多，由于機(jī)械密封具有泄漏量少和壽命長(zhǎng)等優(yōu)點(diǎn)，所以當(dāng)今世界上機(jī)械密封是這些設(shè)備主要的軸密封方式。機(jī)械密封又叫端面密封，在國(guó)家有關(guān)標(biāo)準(zhǔn)中是這樣定義的：“由至少一對(duì)垂直于旋轉(zhuǎn)軸線的端面在流體壓力和補(bǔ)償機(jī)構(gòu)彈力（或磁力）的作用以及輔助密封的配合下保持貼合并相對(duì)滑動(dòng)而構(gòu)成的防止流體泄漏的裝置?！币弧C(jī)械密封的分類機(jī)械密封近年來(lái)發(fā)展很快，根據(jù)不同的工況出現(xiàn)了各種各樣的結(jié)構(gòu)，但無(wú)論哪種結(jié)構(gòu)都由以下四部分組成：一部分是由動(dòng)環(huán)和靜環(huán)組成的密封端面，有時(shí)也稱為摩擦副。第二部分是由彈性元件為主要零件組成的緩沖補(bǔ)償機(jī)構(gòu)，其作用是使密封端面緊密貼合。第三部分是輔助密封圈，其中有動(dòng)環(huán)和靜環(huán)密封圈。第四部分是使動(dòng)環(huán)隨軸旋轉(zhuǎn)的傳動(dòng)機(jī)構(gòu)。機(jī)械密封實(shí)現(xiàn)的原理如圖所示：軸通過(guò)傳動(dòng)座（6）和推環(huán)（4），帶動(dòng)動(dòng)環(huán)（2）旋轉(zhuǎn)，靜環(huán)(1)固定不動(dòng)。</p><p> 由介質(zhì)壓力變化引起端面比壓的增量大于或等于介質(zhì)壓力的增量。平衡型：載荷系數(shù)K<1的密封，也就是由介質(zhì)壓力變化引起的端面比壓的增量小于介質(zhì)壓力的增量，稱為平衡型密封。根據(jù)密封端面的數(shù)量和布置方式可分為單端面、雙端面及多端面機(jī)械密封。兩組密封端面“背靠背”（圖10a）或“面對(duì)面”（圖10b）布置的密封叫雙端面機(jī)械密封。對(duì)于工作介質(zhì)有毒、易爆、易燃、易揮發(fā)、易結(jié)晶、高溫、低溫或工作介質(zhì)是氣體，或?qū)τ诟哒婵斩鹊拿芊?，可用雙端面密封。此時(shí)雙端面之間的密封腔引入封液進(jìn)行堵封、潤(rùn)滑和冷卻。一般情況下封液選用潔凈和潤(rùn)滑性好的介質(zhì)。二、串聯(lián)機(jī)械密封應(yīng)用的工況兩組或兩組以上同向布置的單端面機(jī)械密封組成串聯(lián)機(jī)械密封（圖11）。這種密封方式使密封腔的壓力逐級(jí)降低，介質(zhì)不至外漏。串聯(lián)密封一般情況下很少采用，只有在壓力很高時(shí)采用。補(bǔ)償機(jī)構(gòu)為波紋管，密封環(huán)（動(dòng)環(huán)或靜環(huán)）和波紋管制成一個(gè)整體，中間沒(méi)有輔助密封圈（見(jiàn)圖8）稱為波紋音式機(jī)械密封。波紋音式機(jī)械密封減少了一個(gè)泄漏點(diǎn)；同時(shí)減少了補(bǔ)償機(jī)構(gòu)的摩擦阻力，改善了追隨性；對(duì)于焊接金屬波紋管密封（圖8b）使用溫度不受輔助密封圈的限制；對(duì)于四氟波紋管密封（圖8a）可用于腐蝕性介質(zhì)中。貴陽(yáng)襄樊五二五泵用機(jī)械密封廠家。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="濰坊ih泵用機(jī)械密封,泵用機(jī)械密封" src="https://tyunfile.71360.com/UploadFile/ygebgm/637324990676972656/2521191.png"></div><p> 要將軸封部分的溫度設(shè)計(jì)為0℃，這時(shí)用作氣體密封，密封圈可用普通O形或V形密封圈。密封結(jié)構(gòu)是與泵體結(jié)構(gòu)相適應(yīng)，常用的低溫泵采用立式結(jié)構(gòu).3.輔助裝置(1)要盡可能加大沖洗量，加強(qiáng)冷卻措施，或提高密封腔內(nèi)壓力，來(lái)控制液溫升高所引起的氣化現(xiàn)象，要***避免從泵出口端裝沖洗管線來(lái)沖洗密封端面，因?yàn)樵诘蜏叵拢@種沖洗管線內(nèi)液體會(huì)氣化.所以，一般采逆流沖洗方式.(2)防止單端面密封在泵停轉(zhuǎn)過(guò)程中大氣中水分與密封接觸使邊緣結(jié)冰，可用甲醇等化冰劑加以溶解，阻封部分也可通人氮?dú)飧蓺饧右员Ｗo(hù).總之，既要充分冷卻又要采取保冷措施。(3)在高于密封面的部位裝設(shè)排氣管線，這樣，如果產(chǎn)生氣體也可從排氣管線逸出。有關(guān)低溫泵的輔助裝置見(jiàn)第七節(jié)低溫泵輔助系統(tǒng)。二、低溫甲烷泵機(jī)械密封低溫泵通常是立式結(jié)構(gòu)，密封腔設(shè)在泵的上部，密封結(jié)構(gòu)為雙端面平衡型機(jī)械密封。低溫泵的結(jié)構(gòu)及布置如圖10-19所示。1.低溫泵的結(jié)構(gòu)特點(diǎn)(1)筒形結(jié)構(gòu)，不必?fù)?dān)心低溫時(shí)發(fā)生變形.(2)一級(jí)葉輪位于底部，通過(guò)增減柱形筒體的長(zhǎng)度(圖10-19中的葉輪只列出二級(jí)，實(shí)際有十多級(jí))，.來(lái)適應(yīng)葉輪級(jí)數(shù)的變化。(3)液體從上向下進(jìn)人葉輪，由吸人端排氣從而起到有效的氣體分離器作用。(4)立式結(jié)構(gòu)排氣順暢。河北渣漿泵用機(jī)械密封型號(hào)。臨沭雙端面泵用機(jī)械密封</p><p style="text-indent:25px">漢中化工泵用機(jī)械密封選型。濰坊ih泵用機(jī)械密封</p><p> 其抗拉強(qiáng)度和硬度增加而韌性下降.塑料和橡膠的低溫性能比金屬材料更為敏感.一般情況下，塑料和橡膠只能在-50℃以上的溫度范圍使用。對(duì)于低溫泵，資料[13]介紹:丁睛橡膠的使用溫度限為-60℃氯丁橡膠為-65℃，硅酮橡膠為-80℃，氟化橡膠為-45℃，聚四氟乙烯為-79℃，并認(rèn)為使用以上這些材料作填料的機(jī)械密封以-70℃為使用極限。如果介質(zhì)溫度在-70℃以下，則使用波紋管型機(jī)械密封或者雙端面機(jī)械密封.資料[6]介紹聚四氟乙烯在氦的沸點(diǎn)(℃)還能保持一點(diǎn)柔軟性，適宜做低溫材料，但聚四氟乙烯的膨脹系數(shù)大，所以在-50~-100℃溫度使用時(shí)，常采用四氟填充石墨或玻璃纖維，而不用純四氟材料.此外，在低溫時(shí)，V形圈裝到軸套上后，動(dòng)環(huán)往往不能浮動(dòng)。因此，要注意V形圈的組裝尺寸。關(guān)于低溫機(jī)械密封及低溫泵材料如表10-4所示。低溫時(shí)PTFE的機(jī)械性能如表10-5所示。2.結(jié)構(gòu)要求在一般的0~-50℃低溫下，常采用單端面機(jī)械密封，有非平衡或平衡型結(jié)構(gòu)，但多數(shù)選用平衡型結(jié)構(gòu)，這是因?yàn)槊芊舛嗣娴囊盒萁?jīng)摩擦后溫度升高，液膜壓力隨之升高而將密封面推開(kāi)，泄漏加劇。因此，低溫時(shí)的端面比壓要選高值。在液溫低于-70℃時(shí)，則采用波紋管密封或雙端面密封.不過(guò)使用雙端面密封時(shí)。濰坊ih泵用機(jī)械密封</p><p style="text-indent:25px">伊格爾博格曼機(jī)械密封（張家港）有限公司是一家機(jī)械密封，機(jī)械密封件，泵用機(jī)械密封，集裝式機(jī)械密封，釜用機(jī)械密封，攪拌器機(jī)械密封，金屬波紋管機(jī)械密封，泵廠配套機(jī)械密封，石家莊工業(yè)泵機(jī)械密封，襄樊五二五泵用機(jī)械密封，柳州酸王泵用機(jī)械密封，連成配套機(jī)械密封，凱泉配套機(jī)械密封，東方配套機(jī)械密封，南方配套機(jī)械密封，福斯機(jī)械密封，沃曼泵用機(jī)械密封，電廠配套機(jī)械密封，凱泉配套機(jī)械密封。的公司，是一家集研發(fā)、設(shè)計(jì)、生產(chǎn)和銷售為一體的專業(yè)化公司。張家港博格曼深耕行業(yè)多年，始終以客戶的需求為向?qū)?，為客戶提供高品質(zhì)的機(jī)械密封，泵用機(jī)械密封，釜用機(jī)械密封，攪拌器機(jī)械密封。張家港博格曼始終以本分踏實(shí)的精神和必勝的信念，影響并帶動(dòng)團(tuán)隊(duì)取得成功。張家港博格曼創(chuàng)始人劉義，始終關(guān)注客戶，創(chuàng)新科技，竭誠(chéng)為客戶提供良好的服務(wù)。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/1594699.html</p></div></div></div></div></div><div id="qzl3ace" class="page-right twoColRt"><div id="3nz3ip8" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="zifw77o" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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