陶瓷氣動雙閘板閥
氣動陶瓷進料閥,,上海品牌 - 上海雄工閥門有限公司 |
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氣動陶瓷進料閥,產品概述：
,陶瓷氣動雙閘板閥本閥主要適用于火電廠干灰系統灰、渣進料的啟閉之用，也適用于礦山、石灰廠、水泥廠等有磨損、腐蝕的粉塵介質的進料啟閉。本閥門具有密閉性能好，耐高溫，耐磨性強，啟閉靈活，無卡灰及積灰現象，使用壽命長等優點。 的(de)(de)啟(qi)閉(bi)件是(shi)(shi)閘(zha)(zha)(zha)(zha)(zha)板(ban)(ban)(ban)(ban)，閘(zha)(zha)(zha)(zha)(zha)板(ban)(ban)(ban)(ban)的(de)(de)運(yun)動(dong)(dong)(dong)方(fang)向(xiang)(xiang)與流(liu)體(ti)(ti)方(fang)向(xiang)(xiang)相垂直(zhi)，閘(zha)(zha)(zha)(zha)(zha)閥(fa)只能作(zuo)(zuo)全(quan)開(kai)(kai)(kai)和全(quan)關,不(bu)能作(zuo)(zuo)調節(jie)和節(jie)流(liu)。閘(zha)(zha)(zha)(zha)(zha)板(ban)(ban)(ban)(ban)有(you)(you)兩個密(mi)(mi)(mi)封(feng)(feng)面(mian)(mian)(mian),最常用(yong)的(de)(de)模(mo)式閘(zha)(zha)(zha)(zha)(zha)板(ban)(ban)(ban)(ban)閥(fa)的(de)(de)兩個密(mi)(mi)(mi)封(feng)(feng)面(mian)(mian)(mian)形(xing)(xing)成(cheng)楔(xie)形(xing)(xing)、楔(xie)形(xing)(xing)角隨(sui)(sui)參數而異,通(tong)(tong)(tong)常為(wei)(wei)50,介質(zhi)溫(wen)(wen)度(du)不(bu)高(gao)時為(wei)(wei)2°52'。楔(xie)式閘(zha)(zha)(zha)(zha)(zha)閥(fa)的(de)(de)閘(zha)(zha)(zha)(zha)(zha)板(ban)(ban)(ban)(ban)可以(yi)做(zuo)成(cheng)一個整 體(ti)(ti)，叫(jiao)(jiao)做(zuo)剛性(xing)閘(zha)(zha)(zha)(zha)(zha)板(ban)(ban)(ban)(ban)；也可以(yi)做(zuo)成(cheng)能產生微量變(bian)形(xing)(xing)的(de)(de)閘(zha)(zha)(zha)(zha)(zha)板(ban)(ban)(ban)(ban),以(yi)改善(shan)其(qi)工藝性(xing),彌補密(mi)(mi)(mi)封(feng)(feng)面(mian)(mian)(mian)角度(du)在(zai)(zai)(zai)加(jia)工過(guo)(guo)程中產生的(de)(de)偏(pian)差,這種閘(zha)(zha)(zha)(zha)(zha)板(ban)(ban)(ban)(ban)叫(jiao)(jiao)做(zuo)彈性(xing)閘(zha)(zha)(zha)(zha)(zha)板(ban)(ban)(ban)(ban)。閘(zha)(zha)(zha)(zha)(zha)閥(fa)關閉(bi)時,密(mi)(mi)(mi)封(feng)(feng)面(mian)(mian)(mian)可以(yi)只依(yi)靠介質(zhi)壓(ya)力(li)來密(mi)(mi)(mi)封(feng)(feng),即(ji)依(yi)靠介質(zhi)壓(ya)力(li)將閘(zha)(zha)(zha)(zha)(zha)板(ban)(ban)(ban)(ban)的(de)(de)密(mi)(mi)(mi)封(feng)(feng)面(mian)(mian)(mian)壓(ya)向(xiang)(xiang)另(ling)一側的(de)(de)閥(fa)座來保(bao)證密(mi)(mi)(mi)封(feng)(feng)面(mian)(mian)(mian)的(de)(de)密(mi)(mi)(mi)封(feng)(feng)，這就是(shi)(shi)自密(mi)(mi)(mi)封(feng)(feng)。大部分是(shi)(shi)采用(yong)強制密(mi)(mi)(mi)封(feng)(feng)的(de)(de),即(ji)閥(fa)門(men)(men)關閉(bi)時，要依(yi)靠外力(li)強行(xing)(xing)將閘(zha)(zha)(zha)(zha)(zha)板(ban)(ban)(ban)(ban)壓(ya)向(xiang)(xiang)閥(fa)座,以(yi)保(bao)證密(mi)(mi)(mi)封(feng)(feng)面(mian)(mian)(mian)的(de)(de)密(mi)(mi)(mi)封(feng)(feng)性(xing)。閘(zha)(zha)(zha)(zha)(zha)閥(fa)的(de)(de)閘(zha)(zha)(zha)(zha)(zha)板(ban)(ban)(ban)(ban)隨(sui)(sui)閥(fa)桿(gan)(gan)一起(qi)作(zuo)(zuo)直(zhi)線運(yun)動(dong)(dong)(dong)的(de)(de)，叫(jiao)(jiao)升(sheng)(sheng)降(jiang)桿(gan)(gan)閘(zha)(zha)(zha)(zha)(zha)閥(fa)亦叫(jiao)(jiao)明桿(gan)(gan)閘(zha)(zha)(zha)(zha)(zha)閥(fa)。通(tong)(tong)(tong)常在(zai)(zai)(zai)升(sheng)(sheng)降(jiang)桿(gan)(gan)上(shang)有(you)(you)梯形(xing)(xing)螺(luo)紋(wen)，通(tong)(tong)(tong)過(guo)(guo)閥(fa)門(men)(men)頂端的(de)(de)螺(luo)母以(yi)及閥(fa)體(ti)(ti)上(shang)的(de)(de)導槽，將旋轉(zhuan)(zhuan)運(yun)動(dong)(dong)(dong)變(bian)為(wei)(wei)直(zhi)線運(yun)動(dong)(dong)(dong),也就是(shi)(shi)將操作(zuo)(zuo)轉(zhuan)(zhuan)矩(ju)變(bian)為(wei)(wei)操作(zuo)(zuo)推力(li)。開(kai)(kai)(kai)啟(qi)閥(fa)門(men)(men)時，當閘(zha)(zha)(zha)(zha)(zha)板(ban)(ban)(ban)(ban)提升(sheng)(sheng)高(gao)度(du)等于閥(fa)門(men)(men)通(tong)(tong)(tong)徑的(de)(de)1：1倍(bei)時，流(liu)體(ti)(ti)的(de)(de)通(tong)(tong)(tong)道完全(quan)暢通(tong)(tong)(tong)，但在(zai)(zai)(zai)運(yun)行(xing)(xing)時，此位(wei)置(zhi)(zhi)是(shi)(shi)無法監(jian)視的(de)(de)。實(shi)際(ji)使用(yong)時，是(shi)(shi)以(yi)閥(fa)桿(gan)(gan)的(de)(de)頂點作(zuo)(zuo)為(wei)(wei)標志(zhi)，即(ji)開(kai)(kai)(kai)不(bu)動(dong)(dong)(dong)的(de)(de)位(wei)置(zhi)(zhi)，作(zuo)(zuo)為(wei)(wei)它的(de)(de)全(quan)開(kai)(kai)(kai)位(wei)置(zhi)(zhi)。為(wei)(wei)考慮溫(wen)(wen)度(du)變(bian)化出現鎖死(si)現象,通(tong)(tong)(tong)常在(zai)(zai)(zai)開(kai)(kai)(kai)到頂點位(wei)置(zhi)(zhi)上(shang),再倒回1/2－1圈,作(zuo)(zuo)為(wei)(wei)全(quan)開(kai)(kai)(kai)閥(fa)門(men)(men)的(de)(de)位(wei)置(zhi)(zhi)。因此,的(de)(de)全(quan)開(kai)(kai)(kai)位(wei)置(zhi)(zhi)，按閘(zha)(zha)(zha)(zha)(zha)板(ban)(ban)(ban)(ban)的(de)(de)位(wei)置(zhi)(zhi)即(ji)行(xing)(xing)程來確定。有(you)(you)的(de)(de)閘(zha)(zha)(zha)(zha)(zha)閥(fa),閥(fa)桿(gan)(gan)螺(luo)母設在(zai)(zai)(zai)閘(zha)(zha)(zha)(zha)(zha)板(ban)(ban)(ban)(ban)上(shang)，手輪轉(zhuan)(zhuan)動(dong)(dong)(dong)帶動(dong)(dong)(dong)閥(fa)桿(gan)(gan)轉(zhuan)(zhuan)動(dong)(dong)(dong),而使閘(zha)(zha)(zha)(zha)(zha)板(ban)(ban)(ban)(ban)提升(sheng)(sheng),這種閥(fa)門(men)(men)叫(jiao)(jiao)做(zuo)旋轉(zhuan)(zhuan)桿(gan)(gan)閘(zha)(zha)(zha)(zha)(zha)閥(fa)或叫(jiao)(jiao)暗(an)桿(gan)(gan)閘(zha)(zha)(zha)(zha)(zha)閥(fa)。
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