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style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>南通重型機械密封廠家批發(fā),密封</p><p><span>***更新：</span>2020-09-02 03:25:36</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="33f3yxe" 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(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: </span>153-66621921</p><p><span>地址: </span>高溝鎮(zhèn)高揚民營經(jīng)濟產(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="ey3eby8" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="3472ost" class="box"><p><p style="text-indent:25px">目前，污水泵產(chǎn)品常用的密封形式有兩種:填料密封和機械密封。填料密封，如圖1所示，是古老的一種密封結(jié)構(gòu)，發(fā)源于工業(yè)**之前的傳統(tǒng)密封裝置，有著100年的材料工藝、潤滑劑系統(tǒng)和制造方法，并保持持續(xù)進(jìn)步，目前很多的應(yīng)用場合。經(jīng)分析，該軟填料密封結(jié)構(gòu)存在如下缺點:1，南通重型機械密封廠家批發(fā).密封介質(zhì)含有的雜質(zhì)嚴(yán)重影響密封性能。雜質(zhì)進(jìn)入軟填料密封內(nèi)部，進(jìn)一步增大了填料密封和軸套之間的摩擦、磨損。雖然材料耐磨性較好，南通重型機械密封廠家批發(fā)，但是使用效果仍然不佳，泄漏頻繁。另外由于沒有采用封液對填料密封進(jìn)行潤滑冷卻，也加劇了填料與軸套之間的磨損。2.工作狀態(tài)不穩(wěn)定需頻繁調(diào)整和更換填料。由于軟填料自身具有的粘彈特性，在工作狀態(tài)下會出現(xiàn)明顯的應(yīng)力松弛。為保持其正常的密封功能，需不斷地通過壓緊壓蓋來增大填料與軸的徑向接觸力，同時也增大了軟填料與軸的磨損，因此不得不經(jīng)常更換(或添加)填料，維修工作量和費用較大增加。3.磨損嚴(yán)重致使能耗量大，南通重型機械密封廠家批發(fā)。根據(jù)軟填料密封的工作機理，填料密封與軸(或軸套)之間必須保持較大的徑向接觸壓力以維持密封，因此填料和軸(或軸套)的摩擦、磨損都很嚴(yán)重，在密封很快失去工作能力的同時，造成相當(dāng)大的能耗浪費。因端面密封載荷的存在，在密封腔缺乏液體時啟動泵而發(fā)生干摩擦。南通重型機械密封廠家批發(fā)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南通重型機械密封廠家批發(fā),密封" src="https://tyunfile.71360.com/UploadFile/lscmjx/637245508432666015/3759146.jpg"></div><p> 機械密封的安裝前準(zhǔn)備工作及注意事項 </p> <p> 以上檢修工作完成后，需要重新安裝機封，在安裝前先必須做好準(zhǔn)備工作： </p> <p> 1、如果更換新機封，須檢查機械密封的型號、規(guī)格是否正確，質(zhì)量是否符合標(biāo)準(zhǔn)； </p> <p> 2、靜環(huán)尾部防轉(zhuǎn)槽端與防轉(zhuǎn)銷頂部應(yīng)保持1mm-2mm的軸向間隙，以免緩沖失效； </p> <p> 3、動、靜環(huán)端面用酒精清洗干凈，其余金屬件用汽油清洗并用潔凈的壓縮空氣吹干，仔細(xì)檢查務(wù)心保證動、靜環(huán)密封面沒有任何損傷。裝配前，兩件“0”形橡膠密封圈應(yīng)涂上一層潤滑油膏，動、靜環(huán)端面不許涂油。 </p> <p> 機械密封的安裝 </p> <p> 機封安裝順序及注意事項如下： </p> <p> 1、在轉(zhuǎn)子與泵體的相對位置固定之后，確定機械密封的安裝位置，根據(jù)密封的安裝尺寸及靜環(huán)在壓蓋中的位置，測算出密封在軸或軸套上的定位尺寸； </p> <p> 2、安裝機封動環(huán)，動環(huán)安裝后須保證能其在軸上靈活移動； </p> <p> 3、將組裝好的靜環(huán)部分和動環(huán)部分組裝好； </p> <p> 4、把密封端蓋裝在密封體內(nèi)，并將螺絲擰緊。南通重型機械密封廠家批發(fā)機械密封的正常運行必須具備以下條件：機械密封的泵軸撓度要小，加上機械密封自身性能，才能達(dá)到密封效果。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南通重型機械密封廠家批發(fā),密封" src="https://tyunfile.71360.com/UploadFile/lscmjx/637247295161962890/6395142.jpg"></div><p> 盤根填料材料的性能指標(biāo) </p> <p> 盤根填料的的材料特性直接影響著盤根填料密封性和使用壽命，有以下指標(biāo)： </p> <p> 壓縮率：加載時，材料的厚度壓縮量與初始厚度之比 </p> <p> 回彈率：固體物質(zhì)卸載時的回彈量與加載時的壓縮量之比 </p> <p> 耐磨性：兩材料表面之間相對運動引起的損耗程度 </p> <p> 自潤滑性：材料自身具有潤滑性的性能 </p> <p> 應(yīng)力松弛率：應(yīng)力松弛狀態(tài)下應(yīng)力衰減的百分?jǐn)?shù) </p> <p> 熱失量：物質(zhì)在規(guī)定溫度規(guī)定時間內(nèi)灼燒后失去的質(zhì)量百分?jǐn)?shù) </p> <p> 酸失量：材料在規(guī)定操作程序的酸溶液中處理后失去的質(zhì)量百分?jǐn)?shù)8、堿失量：材料在規(guī)定操作程序的堿溶液中處理后失去的質(zhì)量百分?jǐn)?shù) </p> <p> 盤根填料的的每種材料每個性能指標(biāo)國家或行業(yè)都有嚴(yán)格的規(guī)定，從而確保盤根的質(zhì)量能夠得保證。 </p><p> 化工設(shè)備機械密封失效的過程中會呈現(xiàn)一定的癥狀，其常見的癥狀可以歸納為以下幾點：機械設(shè)備出現(xiàn)持續(xù)性的泄漏狀況，在化工設(shè)備工作時，會出現(xiàn)尖叫等情況。其次，當(dāng)化工設(shè)備在運行的過程中，其密封面的外側(cè)會出現(xiàn)石墨粉塵，它們會凝聚在一塊。另者，當(dāng)化工設(shè)備在運行時，其密封處發(fā)出爆鳴聲音，這也可能會是出現(xiàn)化工設(shè)備機械密封失效。同時，如果泵以及軸一直振動，密封的使用壽命比較短，這也有可能是因為化工設(shè)備機械密封失效。當(dāng)化工設(shè)備出現(xiàn)以上情況時，相關(guān)技術(shù)人員應(yīng)該對機械密封進(jìn)行檢查，進(jìn)一步確定是否是化工設(shè)備機械密封失效，同時找出其失效的原因。 </p> <p> 化工機械設(shè)備無泄漏是永恒的追求，就是因為這樣的追求推進(jìn)了磁力泵與屏蔽泵的良好發(fā)展?？墒且胝嬲刈龅綗o泄漏，那么經(jīng)歷的路程很長。機械密封可謂是一種比較先進(jìn)的動密封產(chǎn)品，主要是借助介質(zhì)壓力以及彈簧力，應(yīng)用一對平滑而且有流體膜的表面使其密封。和填料密封進(jìn)行比較，機械密封的效果更加突出，而且不磨損，應(yīng)用的年限較長，消耗的具體功率比較小，所以，在進(jìn)行動密封的位置應(yīng)用甚多。機械密封的密封面要有一定的比壓，從而達(dá)到密封的目的，兩端面的緊密緊密程度可以通過彈簧調(diào)節(jié)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南通重型機械密封廠家批發(fā),密封" src="https://tyunfile.71360.com/UploadFile/lscmjx/637247288264775390/143677.jpg"></div><p style="text-indent:25px">化學(xué)腐蝕由于密封接觸腐蝕性介質(zhì)就會產(chǎn)生表面腐蝕，甚至在表面各處產(chǎn)生劇烈腐蝕點而形成點蝕。在金屬的晶界上產(chǎn)生的晶間腐蝕，會深入到金屬的內(nèi)部，并進(jìn)一步破壞而引起斷裂。腐蝕的性能影響很大。由于密封件比主機的零件小，而且更精密，通常要選用比主機更耐腐蝕的材料。經(jīng)驗表明，壓力、溫度和滑動速度都能使腐蝕加速。密封件的腐蝕率隨溫度升高呈指標(biāo)規(guī)律增加。處理強腐蝕流體時，采用雙端面密封，可以比較大限度減輕腐蝕對密封件的影響，因為它與工藝流體相接觸的零件數(shù)量少。這也是在強腐蝕條件下，選擇密封結(jié)構(gòu)的一條重要的原則。密封零件失效機械密封零件失效大部分是輔助密封圈失效，機械密封由于泄漏而不能正常工作的一個主要原因也是因為O形圈失效引起的。O形圈失效的表現(xiàn)為老化、長久性變形、溶脹變形、扭曲及擠出損傷。因此，在選用O形圈時應(yīng)考慮合成橡膠的安全使用溫度，盡可能地選用截面較大的橡膠O形圈，適當(dāng)提高硬度，采用溝槽式的裝配結(jié)構(gòu)，通過沉浸試驗合理選材，必要時選用復(fù)合材料，如橡膠包覆聚四氟乙烯密封圈。機械密封的工作溫度不能超過其規(guī)定值。蘇州機械液壓密封</p><p style="text-indent:25px">針對密封實際應(yīng)用中出現(xiàn)的問題，應(yīng)引起重視，分析問題發(fā)生的原因，然后及時采取針對性的措施，保證效果。南通重型機械密封廠家批發(fā)</p><p style="text-indent:25px">由于磁性過濾器堵塞對機械密封的正常運行使用危害很大，因此要定期檢查清洗，發(fā)現(xiàn)元件損壞及時更換;應(yīng)保持機械密封水一路磁性濾網(wǎng)運行，另一路備用，定期切換使用，以保證其正常的運行狀態(tài)。定期清理工作結(jié)束，應(yīng)在進(jìn)行注水排空氣后，再將磁性過濾器投入備用狀態(tài)。機械密封水系統(tǒng)的排氣管必須在高于換熱器機械密封水出口管路上加裝，正常運行前必須將機械密封水腔室及管路中的空氣徹底排出，低轉(zhuǎn)速運行時也可以排氣，但是注意掌握開度不要將排氣閥全開。如排氣不徹底會出現(xiàn)密封摩擦副之間沒有潤滑液，造成干磨和旋動環(huán)熱裂，嚴(yán)重影響機械密封的安全正常運行。此外，針對使用中的壓力問題，除在安裝時嚴(yán)格執(zhí)行規(guī)定的彈簧壓縮量外，還應(yīng)在高壓條件下采取特別處理措施。為使端面受力合理、減小變形，可采用硬質(zhì)合金、陶瓷等耐壓強度高的材料，并加強冷卻的潤滑措施。對真空狀態(tài)運行造成的機械密封滲漏，應(yīng)采用雙端面機械密封，以改善潤滑條件，提高密封性能。南通重型機械密封廠家批發(fā)</p><p 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