FESTO過濾減壓閥安裝及使用

為(wei)(wei)(wei)(wei)防止以(yi)上(shang)(shang)溢流(liu)(liu)式(shi)(shi)(shi)(shi)(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)徘(pai)出(chu)(chu)(chu)(chu)(chu)少(shao)量(liang)氣(qi)(qi)(qi)體對周圍(wei)環境(jing)的(de)(de)(de)(de)(de)污染，可采用(yong)不帶溢流(liu)(liu)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)(de)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)（即(ji)普通(tong)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)），其(qi)符號如(ru)圖(tu)(tu)(tu)14—1c所(suo)示(shi)。 導(dao)(dao)式(shi)(shi)(shi)(shi)(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)圖(tu)(tu)(tu)14—2內部(bu)導(dao)(dao)式(shi)(shi)(shi)(shi)(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)當(dang)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)(de)輸(shu)出(chu)(chu)(chu)(chu)(chu)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)較(jiao)高(gao)(gao)或通(tong)徑較(jiao)大(da)(da)(da)(da)時(shi)，用(yong)調壓(ya)(ya)(ya)(ya)(ya)彈(dan)簧(huang)直(zhi)(zhi)接(jie)調壓(ya)(ya)(ya)(ya)(ya)，則彈(dan)簧(huang)剛(gang)度(du)必然過(guo)大(da)(da)(da)(da)，流(liu)(liu)量(liang)變(bian)化(hua)時(shi)，輸(shu)出(chu)(chu)(chu)(chu)(chu)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)波(bo)動(dong)(dong)(dong)(dong)較(jiao)大(da)(da)(da)(da)，閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)(de)結構(gou)尺寸也將增大(da)(da)(da)(da)。為(wei)(wei)(wei)(wei)了(le)克(ke)服這些缺點，可采用(yong)導(dao)(dao)式(shi)(shi)(shi)(shi)(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)。導(dao)(dao)式(shi)(shi)(shi)(shi)(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)(de)工(gong)作(zuo)(zuo)原(yuan)(yuan)理(li)與(yu)直(zhi)(zhi)動(dong)(dong)(dong)(dong)式(shi)(shi)(shi)(shi)(shi)(shi)的(de)(de)(de)(de)(de)基本(ben)相(xiang)同(tong)。導(dao)(dao)式(shi)(shi)(shi)(shi)(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)所(suo)用(yong)的(de)(de)(de)(de)(de)調壓(ya)(ya)(ya)(ya)(ya)氣(qi)(qi)(qi)體，是(shi)(shi)由(you)小(xiao)(xiao)型(xing)(xing)的(de)(de)(de)(de)(de)直(zhi)(zhi)動(dong)(dong)(dong)(dong)式(shi)(shi)(shi)(shi)(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)供(gong)給的(de)(de)(de)(de)(de)。若把小(xiao)(xiao)型(xing)(xing)直(zhi)(zhi)動(dong)(dong)(dong)(dong)式(shi)(shi)(shi)(shi)(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)裝在(zai)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)體內部(bu)，則稱為(wei)(wei)(wei)(wei)內部(bu)導(dao)(dao)式(shi)(shi)(shi)(shi)(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)；若將小(xiao)(xiao)型(xing)(xing)直(zhi)(zhi)動(dong)(dong)(dong)(dong)式(shi)(shi)(shi)(shi)(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)裝在(zai)主(zhu)(zhu)(zhu)(zhu)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)體外(wai)(wai)(wai)部(bu)，則稱為(wei)(wei)(wei)(wei)外(wai)(wai)(wai)部(bu)導(dao)(dao)式(shi)(shi)(shi)(shi)(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)。 圖(tu)(tu)(tu)14—2所(suo)示(shi)為(wei)(wei)(wei)(wei)內部(bu)導(dao)(dao)式(shi)(shi)(shi)(shi)(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)(de)結構(gou)圖(tu)(tu)(tu)，與(yu)直(zhi)(zhi)動(dong)(dong)(dong)(dong)式(shi)(shi)(shi)(shi)(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)相(xiang)比，該閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)增加了(le)由(you)噴(pen)(pen)(pen)(pen)嘴(zui)(zui)(zui)4、擋(dang)(dang)板(ban)3、固定(ding)(ding)節流(liu)(liu)孔9及氣(qi)(qi)(qi)室(shi)(shi)(shi)B所(suo)組成的(de)(de)(de)(de)(de)噴(pen)(pen)(pen)(pen)嘴(zui)(zui)(zui)擋(dang)(dang)板(ban)放大(da)(da)(da)(da)環節。當(dang)噴(pen)(pen)(pen)(pen)嘴(zui)(zui)(zui)與(yu)擋(dang)(dang)板(ban)之(zhi)間的(de)(de)(de)(de)(de)距(ju)離(li)發生微小(xiao)(xiao)變(bian)化(hua)時(shi)，就會使(shi)B室(shi)(shi)(shi)中(zhong)的(de)(de)(de)(de)(de)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)發生根明顯(xian)的(de)(de)(de)(de)(de)變(bian)化(hua)，從(cong)(cong)(cong)而引(yin)起(qi)膜片(pian)10有(you)較(jiao)大(da)(da)(da)(da)的(de)(de)(de)(de)(de)位移，去控(kong)制(zhi)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)芯(xin)6的(de)(de)(de)(de)(de)上(shang)(shang)下移動(dong)(dong)(dong)(dong)，使(shi)進(jin)(jin)氣(qi)(qi)(qi)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)口8開(kai)大(da)(da)(da)(da)或關小(xiao)(xiao)、提(ti)高(gao)(gao)了(le)對閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)芯(xin)控(kong)制(zhi)的(de)(de)(de)(de)(de)靈敏度(du)，即(ji)提(ti)高(gao)(gao)了(le)穩壓(ya)(ya)(ya)(ya)(ya)精度(du)。 圖(tu)(tu)(tu)14—3外(wai)(wai)(wai)部(bu)導(dao)(dao)式(shi)(shi)(shi)(shi)(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)(de)主(zhu)(zhu)(zhu)(zhu)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)圖(tu)(tu)(tu)14—3所(suo)示(shi)為(wei)(wei)(wei)(wei)外(wai)(wai)(wai)部(bu)導(dao)(dao)式(shi)(shi)(shi)(shi)(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)(de)主(zhu)(zhu)(zhu)(zhu)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)，其(qi)工(gong)作(zuo)(zuo)原(yuan)(yuan)理(li)與(yu)直(zhi)(zhi)動(dong)(dong)(dong)(dong)式(shi)(shi)(shi)(shi)(shi)(shi)相(xiang)同(tong)。在(zai)主(zhu)(zhu)(zhu)(zhu)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)體外(wai)(wai)(wai)部(bu)還有(you)個小(xiao)(xiao)型(xing)(xing)直(zhi)(zhi)動(dong)(dong)(dong)(dong)式(shi)(shi)(shi)(shi)(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)（圖(tu)(tu)(tu)中(zhong)末示(shi)出(chu)(chu)(chu)(chu)(chu)），由(you)它來控(kong)制(zhi)主(zhu)(zhu)(zhu)(zhu)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)。此類閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)適(shi)于通(tong)徑在(zai)20mm以(yi)上(shang)(shang)，遠距(ju)離(li)（30m以(yi)內）、高(gao)(gao)處、危險處、調壓(ya)(ya)(ya)(ya)(ya)困難(nan)的(de)(de)(de)(de)(de)場(chang)合(he)。定(ding)(ding)值(zhi)(zhi)(zhi)器(qi) 定(ding)(ding)值(zhi)(zhi)(zhi)器(qi)是(shi)(shi)種高(gao)(gao)精度(du)的(de)(de)(de)(de)(de)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)，主(zhu)(zhu)(zhu)(zhu)要(yao)用(yong)于壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)定(ding)(ding)值(zhi)(zhi)(zhi)。目前有(you)兩(liang)種壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)規格的(de)(de)(de)(de)(de)定(ding)(ding)值(zhi)(zhi)(zhi)器(qi)：其(qi)氣(qi)(qi)(qi)源(yuan)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)分(fen)(fen)別(bie)(bie)為(wei)(wei)(wei)(wei)0．14MPa和(he)0．35MPa，輸(shu)出(chu)(chu)(chu)(chu)(chu)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)范圍(wei)分(fen)(fen)別(bie)(bie)為(wei)(wei)(wei)(wei)0—0．1MPa和(he)00．25MPa。其(qi)輸(shu)出(chu)(chu)(chu)(chu)(chu)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)波(bo)動(dong)(dong)(dong)(dong)不大(da)(da)(da)(da)于輸(shu)出(chu)(chu)(chu)(chu)(chu)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)的(de)(de)(de)(de)(de)1％，常用(yong)于需要(yao)供(gong)給氣(qi)(qi)(qi)源(yuan)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)和(he)信號壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)的(de)(de)(de)(de)(de)場(chang)合(he)，如(ru)氣(qi)(qi)(qi)動(dong)(dong)(dong)(dong)實驗設備、氣(qi)(qi)(qi)動(dong)(dong)(dong)(dong)自動(dong)(dong)(dong)(dong)裝置(zhi)(zhi)等。 圖(tu)(tu)(tu)14—4定(ding)(ding)值(zhi)(zhi)(zhi)器(qi)圖(tu)(tu)(tu)14—4所(suo)示(shi)為(wei)(wei)(wei)(wei)定(ding)(ding)值(zhi)(zhi)(zhi)器(qi)的(de)(de)(de)(de)(de)工(gong)作(zuo)(zuo)原(yuan)(yuan)理(li)圖(tu)(tu)(tu)。它由(you)三(san)部(bu)分(fen)(fen)組成：1是(shi)(shi)直(zhi)(zhi)動(dong)(dong)(dong)(dong)式(shi)(shi)(shi)(shi)(shi)(shi)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)(de)(de)主(zhu)(zhu)(zhu)(zhu)閉部(bu)分(fen)(fen)；2是(shi)(shi)恒(heng)(heng)壓(ya)(ya)(ya)(ya)(ya)降裝置(zhi)(zhi)，相(xiang)當(dang)于定(ding)(ding)差(cha)減(jian)(jian)(jian)壓(ya)(ya)(ya)(ya)(ya)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)。主(zhu)(zhu)(zhu)(zhu)要(yao)作(zuo)(zuo)用(yong)是(shi)(shi)使(shi)噴(pen)(pen)(pen)(pen)嘴(zui)(zui)(zui)得(de)到穩定(ding)(ding)氣(qi)(qi)(qi)源(yuan)流(liu)(liu)量(liang)；3是(shi)(shi)噴(pen)(pen)(pen)(pen)嘴(zui)(zui)(zui)擋(dang)(dang)板(ban)裝置(zhi)(zhi)和(he)調壓(ya)(ya)(ya)(ya)(ya)部(bu)分(fen)(fen)，起(qi)調壓(ya)(ya)(ya)(ya)(ya)和(he)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)放大(da)(da)(da)(da)作(zuo)(zuo)用(yong)，利用(yong)被它放大(da)(da)(da)(da)了(le)的(de)(de)(de)(de)(de)氣(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)去控(kong)制(zhi)主(zhu)(zhu)(zhu)(zhu)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)部(bu)分(fen)(fen)。 由(you)于定(ding)(ding)值(zhi)(zhi)(zhi)器(qi)具有(you)調定(ding)(ding)、比較(jiao)和(he)放大(da)(da)(da)(da)的(de)(de)(de)(de)(de)功能，因而穩壓(ya)(ya)(ya)(ya)(ya)精度(du)高(gao)(gao)。 定(ding)(ding)值(zhi)(zhi)(zhi)器(qi)處于非工(gong)作(zuo)(zuo)狀態時(shi)，由(you)氣(qi)(qi)(qi)源(yuan)輸(shu)入(ru)的(de)(de)(de)(de)(de)壓(ya)(ya)(ya)(ya)(ya)縮空(kong)氣(qi)(qi)(qi)經過(guo)濾(lv)器(qi)1過(guo)濾(lv)后(hou)進(jin)(jin)入(ru)A室(shi)(shi)(shi)和(he)正室(shi)(shi)(shi)。主(zhu)(zhu)(zhu)(zhu)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)芯(xin)19在(zai)彈(dan)簧(huang)20和(he)氣(qi)(qi)(qi)源(yuan)壓(ya)(ya)(ya)(ya)(ya)力(li)(li)(li)作(zuo)(zuo)用(yong)下壓(ya)(ya)(ya)(ya)(ya)在(zai)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)座(zuo)上(shang)(shang)，使(shi)A室(shi)(shi)(shi)與(yu)B室(shi)(shi)(shi)斷開(kai)。進(jin)(jin)入(ru)A室(shi)(shi)(shi)的(de)(de)(de)(de)(de)氣(qi)(qi)(qi)流(liu)(liu)經由(you)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)口（又稱為(wei)(wei)(wei)(wei)活門）12F室(shi)(shi)(shi)，再通(tong)過(guo)恒(heng)(heng)節流(liu)(liu)孔13降壓(ya)(ya)(ya)(ya)(ya)后(hou)，分(fen)(fen)別(bie)(bie)進(jin)(jin)入(ru)G室(shi)(shi)(shi)和(he)D室(shi)(shi)(shi)。由(you)于這時(shi)尚未對膜片(pian)8加力(li)(li)(li)，擋(dang)(dang)板(ban)5與(yu)噴(pen)(pen)(pen)(pen)嘴(zui)(zui)(zui)4之(zhi)間的(de)(de)(de)(de)(de)間距(ju)較(jiao)大(da)(da)(da)(da)，氣(qi)(qi)(qi)體從(cong)(cong)(cong)噴(pen)(pen)(pen)(pen)嘴(zui)(zui)(zui)4流(liu)(liu)出(chu)(chu)(chu)(chu)(chu)時(shi)的(de)(de)(de)(de)(de)氣(qi)(qi)(qi)流(liu)(liu)阻力(li)(li)(li)較(jiao)小(xiao)(xiao)，G室(shi)(shi)(shi)及D室(shi)(shi)(shi)的(de)(de)(de)(de)(de)氣(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)(ya)較(jiao)低，膜片(pian)3及15保持(chi)原(yuan)(yuan)始位置(zhi)(zhi)。進(jin)(jin)入(ru)只室(shi)(shi)(shi)的(de)(de)(de)(de)(de)微量(liang)氣(qi)(qi)(qi)體主(zhu)(zhu)(zhu)(zhu)要(yao)經B室(shi)(shi)(shi)通(tong)過(guo)閥(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)口2從(cong)(cong)(cong)排(pai)氣(qi)(qi)(qi)口排(pai)出(chu)(chu)(chu)(chu)(chu)；另有(you)部(bu)分(fen)(fen)從(cong)(cong)(cong)輸(shu)出(chu)(chu)(chu)(chu)(chu)口排(pai)空(kong)。此時(shi)輸(shu)出(chu)(chu)(chu)(chu)(chu)口無氣(qi)(qi)(qi)流(liu)(liu)輸(shu)出(chu)(chu)(chu)(chu)(chu)，由(you)噴(pen)(pen)(pen)(pen)嘴(zui)(zui)(zui)流(liu)(liu)出(chu)(chu)(chu)(chu)(chu)而排(pai)空(kong)微量(liang)氣(qi)(qi)(qi)體是(shi)(shi)維持(chi)噴(pen)(pen)(pen)(pen)嘴(zui)(zui)(zui)擋(dang)(dang)板(ban)裝置(zhi)(zhi)工(gong)作(zuo)(zuo)所(suo)必須的(de)(de)(de)(de)(de)，因其(qi)為(wei)(wei)(wei)(wei)無功耗氣(qi)(qi)(qi)量(liang)，所(suo)以(yi)希(xi)望其(qi)耗量(liang)越(yue)小(xiao)(xiao)越(yue)好。

FESTO過濾減壓閥安裝及使用