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液(ye)動(dong)扇形盲板(ban)(ban)閥主要由(you)左閥體、右閥體、絲桿(gan)、閘板(ban)(ban)、密封圈、組成(cheng)(cheng),并(bing)由(you)底座、支撐柱構成(cheng)(cheng)一個剛性結構體。閥門中(zhong)設(she)有夾緊(jin)(jin)、松(song)(song)(song)開汽(qi)(qi)缸(gang)和翻(fan)板(ban)(ban)汽(qi)(qi)缸(gang),夾緊(jin)(jin)、松(song)(song)(song)開汽(qi)(qi)缸(gang)通過杠桿(gan)和絲桿(gan)螺旋驅動(dong)左、右閥體完成(cheng)(cheng)松(song)(song)(song)開、夾緊(jin)(jin)動(dong)作,翻(fan)板(ban)(ban)汽(qi)(qi)缸(gang)驅動(dong)閘板(ban)(ban)完成(cheng)(cheng)開關動(dong)作。橡膠密封圈鑲(xiang)鉗在閘板(ban)(ban)上,有耐高(gao)溫、密封性能(neng)好、更換方便(bian)、使用壽(shou)命長(chang)等(deng)特點(dian)。
化(hua)工廠自閉式泄(xie)爆(bao)閥本(ben)泄(xie)爆(bao)閥由(you)閥體、爆(bao)破(po)膜(mo)(mo)(mo)、夾(jia)持(chi)器(qi)、閥蓋(gai)、密封圈等零件組成。爆(bao)破(po)膜(mo)(mo)(mo)裝在夾(jia)持(chi)器(qi)中間(jian),與閥體用(yong)螺栓連(lian) 接(jie)。系統超壓時,爆(bao)破(po)膜(mo)(mo)(mo)破(po)裂,瞬間(jian)泄(xie)壓,閥蓋(gai)彈起后在重力(li)作(zuo)用(yong)下復(fu)位。
緩閉(bi)止(zhi)(zhi)回閥又(you)稱逆止(zhi)(zhi)閥,其作用是防(fang)(fang)(fang)止(zhi)(zhi)管(guan)路中的介質(zhi)倒流(liu)。啟閉(bi)件靠介質(zhi)流(liu)動(dong)和力量(liang)自行開啟或(huo)關閉(bi),以(yi)防(fang)(fang)(fang)止(zhi)(zhi)介質(zhi)倒流(liu)的閥門(men)。止(zhi)(zhi)回閥屬于自動(dong)閥類(lei),主要用于介質(zhi)單向流(liu)動(dong)的管(guan)道上,只允許介質(zhi)向一個方向流(liu)動(dong),以(yi)防(fang)(fang)(fang)止(zhi)(zhi)發生事故。本類(lei)閥門(men)在管(guan)道中一般應當水平安(an)裝(zhuang)。