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作(zuo)为(wei)真空(kong)系统中常(chang)见的部件之一(yi),选(xuan)择真空(kong)阀门需(xu)要根据用途(tu)来(lai)选(xuan)择,此(ci)外(wai)还需(xu)要根据操作(zuo)性与(yu)可(ke)靠(kao)性来(lai)选(xuan)择合(he)适的驱动(dong)方式。真空(kong)阀门的驱动(dong)形式主要包括以下几种形式:
1、手(shou)动式(shi)(shi)。手(shou)动式(shi)(shi)真(zhen)(zhen)空(kong)阀门适用于(yu)小型的且(qie)自动化(hua)程(cheng)度要求(qiu)不高(gao)的真(zhen)(zhen)空(kong)应(ying)用领域(yu),也(ye)常出(chu)现于(yu)一些试(shi)验用的设备(bei)上。
2、磁(ci)(ci)动(dong)式。磁(ci)(ci)动(dong)式真空(kong)阀(fa)门是通过直流或交流电(dian)源磁(ci)(ci)化铁(tie)芯,实现(xian)衔(xian)铁(tie)动(dong)作来带动(dong)阀(fa)板运动(dong)。它由于衔(xian)铁(tie)新行程有(you)限(xian),口径较小,但动(dong)作较快,所以较多用(yong)于低真空(kong)管(guan)道(dao)的(de)(de)截(jie)止阀(fa)、放(fang)气阀(fa)等。磁(ci)(ci)动(dong)式真空(kong)阀(fa)门与气动(dong)式真空(kong)阀(fa)门也都是适用(yong)于保护性场合(he)的(de)(de)阀(fa)门。
3、气(qi)动(dong)(dong)式。气(qi)动(dong)(dong)式真(zhen)空(kong)(kong)阀门通过压缩(suo)空(kong)(kong)气(qi)来驱动(dong)(dong),结构简单,开关(guan)迅速,较常用于(yu)大型真(zhen)空(kong)(kong)设备中的(de)(de)远距离控制,以及(ji)复杂、多阀门的(de)(de)真(zhen)空(kong)(kong)系(xi)统的(de)(de)应用。但因为需要独立气(qi)源,所以它(ta)不适合用于(yu)小型的(de)(de)真(zhen)空(kong)(kong)系(xi)统中。
4、电动(dong)(dong)式(shi)(shi)(shi)与液压(ya)式(shi)(shi)(shi)。电动(dong)(dong)式(shi)(shi)(shi)真(zhen)空(kong)(kong)(kong)阀(fa)门(men)(men)是(shi)(shi)指用电机驱动(dong)(dong)真(zhen)空(kong)(kong)(kong)阀(fa)门(men)(men),而液压(ya)式(shi)(shi)(shi)则是(shi)(shi)通(tong)过油(you)等液体压(ya)力(li)(li)驱动(dong)(dong)真(zhen)空(kong)(kong)(kong)阀(fa)门(men)(men)。这两(liang)类真(zhen)空(kong)(kong)(kong)阀(fa)门(men)(men)都是(shi)(shi)需要大动(dong)(dong)力(li)(li)的(de)真(zhen)空(kong)(kong)(kong)阀(fa)门(men)(men),也(ye)是(shi)(shi)大型工(gong)业生产且自动(dong)(dong)化程度较(jiao)高的(de)真(zhen)空(kong)(kong)(kong)系统(tong)中(zhong)常(chang)用的(de)真(zhen)空(kong)(kong)(kong)阀(fa)门(men)(men)。
以(yi)上(shang)就是常见的(de)(de)几类真(zhen)空阀(fa)门(men)(men)驱动方式。无(wu)油螺(luo)杆(gan)真(zhen)空泵厂(chang)家特别(bie)要指出的(de)(de)是,不(bu)管采用(yong)哪种(zhong)驱动方式的(de)(de)真(zhen)空阀(fa)门(men)(men),都(dou)必须要保证它的(de)(de)可靠性。