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風機軸承箱的密封特點介紹

系統完善 高效可靠

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風機軸承箱密封主要分為兩種, 一種是迷宮式油封屬于非接觸密封,在停機時容易產生潤滑油泄漏,導致潤滑油損失嚴重,不能滿足立式、帶壓設備的密封。而另外一種是盤根、毛氈式油封屬于接觸密封,富有彈性,組織緊密,空隙小,粘合性好,不宜松散。其中的骨架式油封用于風機軸承箱端面的密封。常用的油封材質為NBR,理想狀態下油封唇口與軸安裝部位形成一層很薄的油膜。這層膜有防止外部灰塵進入內部而污染潤滑油的作用。但是由于風機高速運轉,產生的熱量無法及時散發,使得軸承箱中的稀油溫度升高,導致軸與骨架油封唇口之間的油膜蒸發,失去潤滑作用的油封在持續高溫的環境中橡膠變硬,與軸之間變成干摩擦,導致橡膠老化失去其密封作用發生漏油。


時間:2023-05-04

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