關(guan)閉擋(dang)(dang)板(ban)(ban)門(men)主(zhu)要由由框(kuang)架、葉(xie)片、密封(feng)片、主(zhu)軸(zhou)(zhou)、軸(zhou)(zhou)承、軸(zhou)(zhou)封(feng)、曲柄(bing)(bing)(bing)連(lian)(lian)桿(gan)機(ji)構(gou)(gou)(gou)、執行機(ji)構(gou)(gou)(gou)（選購(gou)件(jian)(jian)）等(deng)幾部(bu)分組(zu)成(cheng)。框(kuang)架采(cai)用(yong)(yong)(yong)鋼板(ban)(ban)模(mo)壓成(cheng)形(xing)(xing)、型鋼焊接成(cheng)形(xing)(xing)或鑄造(zao)(zao)成(cheng)形(xing)(xing)，葉(xie)片采(cai)用(yong)(yong)(yong)鋼板(ban)(ban)模(mo)壓成(cheng)形(xing)(xing)或鑄造(zao)(zao)成(cheng)形(xing)(xing)，截(jie)面流(liu)線(xian)形(xing)(xing)葉(xie)片確保(bao)介質壓損極小。葉(xie)片與葉(xie)片間(jian)、葉(xie)片與框(kuang)架間(jian)設有特殊彈性密封(feng)結(jie)構(gou)(gou)(gou)，確保(bao)葉(xie)片關(guan)閉時其(qi)前(qian)后的(de)密封(feng)率可(ke)(ke)達99%以(yi)上(shang)(shang)，特殊訂貨可(ke)(ke)達99.5%以(yi)上(shang)(shang)的(de)密封(feng)率。葉(xie)片與主(zhu)軸(zhou)(zhou)之間(jian)采(cai)用(yong)(yong)(yong)專(zhuan)(zhuan)(zhuan)(zhuan)用(yong)(yong)(yong)緊固件(jian)(jian)連(lian)(lian)接，關(guan)閉擋(dang)(dang)板(ban)(ban)風(feng)門(men)安裝(zhuang)在(zai)管道上(shang)(shang)后，可(ke)(ke)以(yi)拆(chai)卸任(ren)何部(bu)件(jian)(jian)，并保(bao)證在(zai)工作(zuo)狀態下可(ke)(ke)以(yi)方便地檢修或更換部(bu)件(jian)(jian)。軸(zhou)(zhou)頸處(chu)采(cai)用(yong)(yong)(yong)專(zhuan)(zhuan)(zhuan)(zhuan)用(yong)(yong)(yong)密封(feng)結(jie)構(gou)(gou)(gou)及專(zhuan)(zhuan)(zhuan)(zhuan)用(yong)(yong)(yong)軸(zhou)(zhou)承，專(zhuan)(zhuan)(zhuan)(zhuan)用(yong)(yong)(yong)密封(feng)結(jie)構(gou)(gou)(gou)其(qi)密封(feng)性能良(liang)好、無外泄、耐高溫，專(zhuan)(zhuan)(zhuan)(zhuan)用(yong)(yong)(yong)軸(zhou)(zhou)承具(ju)有自(zi)(zi)動調心及自(zi)(zi)動補償功能，可(ke)(ke)以(yi)自(zi)(zi)動補償前(qian)后軸(zhou)(zhou)的(de)同軸(zhou)(zhou)度(du)偏差(cha)，確保(bao)關(guan)閉擋(dang)(dang)板(ban)(ban)風(feng)門(men)阻力小、無卡(ka)澀、轉動靈活(huo)。曲柄(bing)(bing)(bing)連(lian)(lian)桿(gan)機(ji)構(gou)(gou)(gou)上(shang)(shang)配有專(zhuan)(zhuan)(zhuan)(zhuan)用(yong)(yong)(yong)軸(zhou)(zhou)承，確保(bao)傳(chuan)動阻力小，對于巨形(xing)(xing)關(guan)閉擋(dang)(dang)板(ban)(ban)門(men)均采(cai)用(yong)(yong)(yong)雙臂重(zhong)型曲柄(bing)(bing)(bing)連(lian)(lian)桿(gan)機(ji)構(gou)(gou)(gou)，確保(bao)關(guan)閉擋(dang)(dang)板(ban)(ban)風(feng)門(men)啟閉動作(zuo)萬(wan)無一失(shi)。手動、電動或氣動執行機(ji)構(gou)(gou)(gou)可(ke)(ke)以(yi)直接與驅(qu)動主(zhu)軸(zhou)(zhou)連(lian)(lian)接或采(cai)用(yong)(yong)(yong)曲柄(bing)(bing)(bing)連(lian)(lian)桿(gan)機(ji)構(gou)(gou)(gou)形(xing)(xing)成(cheng)遠(yuan)方傳(chuan)動，執行機(ji)構(gou)(gou)(gou)也可(ke)(ke)以(yi)由用(yong)(yong)(yong)戶自(zi)(zi)配。