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搪瓷反應釜攪拌軸減振新方法

來(lái)源: 時(shí)間:2012-11-07 14:10:57 瀏覽次數:

我們知道,在化工生產(chǎn)設備中,搪瓷反應釜是關(guān)鍵設備之一。目前,生產(chǎn)廠(chǎng)家生產(chǎn)的搪瓷反應釜通常采用錨式攪拌器。但在使用過(guò)程中經(jīng)常出現攪拌軸強烈振動(dòng)現象,導致密封填料函中填料嚴重磨損落入釜內的物料中影響產(chǎn)品質(zhì)量。

我們知道,在化工生產(chǎn)設備中,搪瓷反應釜是關(guān)鍵設備之一。目前,生產(chǎn)廠(chǎng)家生產(chǎn)的搪瓷反應釜通常采用錨式攪拌器。但在使用過(guò)程中經(jīng)常出現攪拌軸強烈振動(dòng)現象,導致密封填料函中填料嚴重磨損落入釜內的物料中影響產(chǎn)品質(zhì)量。同時(shí),又因填料的磨損 導致密封性能差使釜中有害介質(zhì)泄出,從而污染了操作環(huán)境,危害操作人員的健康。例如在我廠(chǎng)6501生產(chǎn)中,因搪瓷反應釜攪拌裝置振動(dòng)而日起的漏空漏料現象,不僅影響產(chǎn)品質(zhì)量,更重要的是危害工人的身體健康。針對這 種狀 況,我們經(jīng)過(guò)技術(shù)分析找出引起攪拌軸強烈振動(dòng)的主要原因是由于軸的實(shí)際工作轉速接近或等于其臨界轉速,從而使軸發(fā)生共振。因此,要想消除共振必須使軸的實(shí)際工作轉速與其臨界轉速托開(kāi)距離。由于工藝等其它條件的限制改變攪拌軸的實(shí)際工作轉速困難較大,而常用變更lIfii界轉速值的方法主要有下面幾種 :

(1)增加 軸直徑,則軸的撓度減小,剛性增大,臨界轉速值就提高。
(2)減輕攪拌器和軸的重量,如采用階梯軸、空心軸等都能提高臨界轉速值 
(3)減衄轉軸的長(cháng)度來(lái)提高臨界轉速值。 
(4)采用一個(gè)底部固定的軸承底座,同樣可以增加臨界轉速值,提高軸的穩定性。但這些方法對于已是成品設備的搪瓷反應釜來(lái)說(shuō)又顯得無(wú)能為力了。
為此,我們在實(shí)踐中又摸索出一種新的減振措施,即在攪拌軸上采用穩定裝置。 
關(guān)鍵字: 
北京 江蘇 山東 天津 浙江
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