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發布(bu)時間:2021-12-10 15:49:48 人氣:135063 來源:
木魚鎮機械密封又叫端面密封(feng),在(zai)有(you)關標準中是這樣解(jie)說的(de):由至少一(yi)對垂直于旋轉(zhuan)軸線的(de)端面在(zai)流(liu)(liu)體(ti)壓力和補償機構(gou)彈力的(de)作(zuo)用(yong)以及(ji)輔(fu)助密封(feng)的(de)配合下(xia)保持貼(tie)合并相對滑動(dong)而構(gou)成的(de)防(fang)止流(liu)(liu)體(ti)泄漏的(de)裝置。
木魚鎮機械密封自身壓力增(zeng)壓系統結構包括出水(shui)(shui)(shui)口(kou)、固(gu)(gu)(gu)(gu)定(ding)(ding)(ding)法蘭、泵體(ti)、增(zeng)壓裝置(zhi)(zhi)、電機轉子、吊環、防護(hu)罩、水(shui)(shui)(shui)泵、固(gu)(gu)(gu)(gu)定(ding)(ding)(ding)基座(zuo)、底座(zuo)、加固(gu)(gu)(gu)(gu)件(jian)、控制閥、緊(jin)固(gu)(gu)(gu)(gu)件(jian),所(suo)述出水(shui)(shui)(shui)口(kou)與(yu)(yu)(yu)固(gu)(gu)(gu)(gu)定(ding)(ding)(ding)法蘭相(xiang)連(lian)(lian)(lian)接,泵體(ti)與(yu)(yu)(yu)增(zeng)壓裝置(zhi)(zhi)相(xiang)連(lian)(lian)(lian)接,增(zeng)壓裝置(zhi)(zhi)由進(jin)水(shui)(shui)(shui)口(kou)、水(shui)(shui)(shui)管、負(fu)壓室、平衡固(gu)(gu)(gu)(gu)定(ding)(ding)(ding)盤(pan)、緊(jin)固(gu)(gu)(gu)(gu)支架(jia)組成(cheng),進(jin)水(shui)(shui)(shui)口(kou)與(yu)(yu)(yu)水(shui)(shui)(shui)管相(xiang)連(lian)(lian)(lian)接,水(shui)(shui)(shui)管與(yu)(yu)(yu)負(fu)壓室相(xiang)連(lian)(lian)(lian)接,負(fu)壓室通過平衡固(gu)(gu)(gu)(gu)定(ding)(ding)(ding)盤(pan)保持平衡,緊(jin)固(gu)(gu)(gu)(gu)支架(jia)與(yu)(yu)(yu)泵體(ti)固(gu)(gu)(gu)(gu)定(ding)(ding)(ding)連(lian)(lian)(lian)接,防護(hu)罩與(yu)(yu)(yu)水(shui)(shui)(shui)泵相(xiang)連(lian)(lian)(lian)接,水(shui)(shui)(shui)泵與(yu)(yu)(yu)固(gu)(gu)(gu)(gu)定(ding)(ding)(ding)基座(zuo)相(xiang)連(lian)(lian)(lian)接,固(gu)(gu)(gu)(gu)定(ding)(ding)(ding)基座(zuo)與(yu)(yu)(yu)底座(zuo)緊(jin)固(gu)(gu)(gu)(gu)連(lian)(lian)(lian)接,底座(zuo)上(shang)設有加固(gu)(gu)(gu)(gu)件(jian),緊(jin)固(gu)(gu)(gu)(gu)件(jian)與(yu)(yu)(yu)底座(zuo)固(gu)(gu)(gu)(gu)定(ding)(ding)(ding)連(lian)(lian)(lian)接。
動環和靜環的總稱叫做密封環,是構成木魚鎮機械密封件主要的元件。密封環在很大程度上決定了木魚鎮機械密封件的使用性能和壽命,所以木魚鎮機械密封件(jian)對密封環有一些特定的要求。
一、密封(feng)環(huan)要容易加(jia)工制造
二、安裝(zhuang)和(he)維修要(yao)方便,價格要(yao)低廉。
三、密(mi)封環要有(you)良(liang)好的耐熱沖擊能力,因此材料要有(you)較高的導熱系數和較小的線膨脹系數,承受熱沖擊時不至于(yu)開(kai)裂(lie)。
四(si)、密(mi)封(feng)(feng)環要有(you)良好的自潤(run)滑性(xing),防止工作中發生(sheng)短(duan)時間的干摩擦(ca),不損傷密(mi)封(feng)(feng)端面(mian)。因此,密(mi)封(feng)(feng)環材料與密(mi)封(feng)(feng)流體還要有(you)很(hen)好的浸潤(run)性(xing)。
五、結構簡單
密(mi)封環結構簡(jian)單對稱,優先考慮用(yong)(yong)整體型結構,也(ye)可采用(yong)(yong)組合(he)式密(mi)封環,盡量避(bi)免(mian)用(yong)(yong)密(mi)封端面噴涂(tu)式結構。
六、有足夠的強度和剛(gang)度
木魚鎮機械密封件(jian)在工(gong)作條件(jian)下不(bu)損壞,變形應盡量的(de)小,工(gong)作條件(jian)波(bo)動(dong)時仍(reng)能保(bao)持(chi)密封性(xing)。尤其是密封端面要有足夠的(de)強度(du)以及一定(ding)的(de)耐(nai)腐蝕能力,保(bao)證產品(pin)的(de)使用(yong)壽命(ming)。