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德國HYDAC賀德克比(bi)例(li)(li)閥(fa)(fa)(fa)(fa)對(dui)流(liu)量(liang)(liang)的(de)(de)(de)控(kong)(kong)(kong)制(zhi)(zhi)可(ke)(ke)以(yi)分(fen)(fen)為(wei)兩(liang)種(zhong):一(yi)種(zhong)是開關控(kong)(kong)(kong)制(zhi)(zhi):要么全開、要么全關,流(liu)量(liang)(liang)要么Zda、要么Z小,沒有(you)中間狀態,如普通(tong)的(de)(de)(de)電磁直通(tong)閥(fa)(fa)(fa)(fa)、電磁換(huan)向(xiang)閥(fa)(fa)(fa)(fa)、電液(ye)換(huan)向(xiang)閥(fa)(fa)(fa)(fa)。另一(yi)種(zhong)是連(lian)(lian)續控(kong)(kong)(kong)制(zhi)(zhi):閥(fa)(fa)(fa)(fa)口(kou)可(ke)(ke)以(yi)根據需(xu)(xu)(xu)(xu)要打開任意一(yi)個(ge)開度(du),由此控(kong)(kong)(kong)制(zhi)(zhi)通(tong)過流(liu)量(liang)(liang)的(de)(de)(de)大小。使用比(bi)例(li)(li)閥(fa)(fa)(fa)(fa)的(de)(de)(de)目的(de)(de)(de)就是:以(yi)電控(kong)(kong)(kong)方式(shi)實現對(dui)流(liu)量(liang)(liang)的(de)(de)(de)節(jie)流(liu)控(kong)(kong)(kong)制(zhi)(zhi),或者經(jing)過結構(gou)上的(de)(de)(de)改動(dong)也可(ke)(ke)實現壓力控(kong)(kong)(kong)制(zhi)(zhi)等(deng)。工作原理:自(zi)動(dong)控(kong)(kong)(kong)制(zhi)(zhi)可(ke)(ke)分(fen)(fen)成斷續控(kong)(kong)(kong)制(zhi)(zhi)和連(lian)(lian)續控(kong)(kong)(kong)制(zhi)(zhi)。斷續控(kong)(kong)(kong)制(zhi)(zhi)即開關控(kong)(kong)(kong)制(zhi)(zhi)。氣動(dong)控(kong)(kong)(kong)制(zhi)(zhi)系統(tong)(tong)中使用動(dong)作頻率(lv)較低的(de)(de)(de)開關式(shi)(ON-OFF)的(de)(de)(de)換(huan)向(xiang)閥(fa)(fa)(fa)(fa)來(lai)控(kong)(kong)(kong)制(zhi)(zhi)氣路(lu)的(de)(de)(de)通(tong)斷。靠減壓閥(fa)(fa)(fa)(fa)來(lai)調節(jie)所(suo)需(xu)(xu)(xu)(xu)要的(de)(de)(de)壓力,靠節(jie)流(liu)閥(fa)(fa)(fa)(fa)來(lai)調節(jie)所(suo)需(xu)(xu)(xu)(xu)要的(de)(de)(de)流(liu)量(liang)(liang)。這種(zhong)傳(chuan)統(tong)(tong)的(de)(de)(de)氣動(dong)控(kong)(kong)(kong)制(zhi)(zhi)系統(tong)(tong)要想要有(you)多(duo)(duo)個(ge)輸出力和多(duo)(duo)個(ge)運動(dong)速(su)度(du),就需(xu)(xu)(xu)(xu)要多(duo)(duo)個(ge)減壓閥(fa)(fa)(fa)(fa)、節(jie)流(liu)閥(fa)(fa)(fa)(fa)及換(huan)向(xiang)閥(fa)(fa)(fa)(fa)。這樣,不僅(jin)元件需(xu)(xu)(xu)(xu)要多(duo)(duo),成本高(gao),構(gou)成系統(tong)(tong)復雜,且許多(duo)(duo)元件都需(xu)(xu)(xu)(xu)要預先進(jin)行人(ren)工調節(jie)。比(bi)例(li)(li)閥(fa)(fa)(fa)(fa)控(kong)(kong)(kong)制(zhi)(zhi)屬(shu)于連(lian)(lian)續控(kong)(kong)(kong)制(zhi)(zhi),其特點是輸出量(liang)(liang)隨輸入(ru)量(liang)(liang)的(de)(de)(de)變(bian)化(hua)而變(bian)化(hua),輸出量(liang)(liang)與輸入(ru)量(liang)(liang)之間存在一(yi)定的(de)(de)(de)比(bi)例(li)(li)關系。比(bi)例(li)(li)控(kong)(kong)(kong)制(zhi)(zhi)有(you)開環控(kong)(kong)(kong)制(zhi)(zhi)和閉環控(kong)(kong)(kong)制(zhi)(zhi)之分(fen)(fen)。
技術特點:1.可實(shi)現壓力、速度的無(wu)極調節,避(bi)免(mian)了常(chang)通的開關式氣(qi)閥換向(xiang)時的沖擊現象。
2.能實現遠程控制和(he)程序控制。
3.與斷續控制相比,系統簡化,元件大大減(jian)少。
4.與液壓(ya)比例閥相(xiang)比,體(ti)積(ji)小、重量輕、結構(gou)簡(jian)單、成本較低,但響應速度比液壓(ya)系統慢得多,對負載變化(hua)也比較敏感。
5.使用(yong)功率小、發熱(re)少、噪聲低。
6.不會發生火災,不污染環境(jing)。受溫度變化的影響小。
3255571;PDB12P-01M-C-N-87-0
3436075;PDB16221PE-01-C-N-060-0
3436078;PDB16221PE-01-C-N-060-12PG-2.2
3436079;PDB16221PE-01-C-N-060-24PG-8.8;
3436080;PDB16221PE-01-C-N-230-0
3111728;PDR08-01-C-N-200-12PG-2.2;173
3111729;PDR08-01-C-N-200-24PG-8.8;173 .
3191373;PDB12P-01-C-N-330-0
3191374;PDB12P-01-C-N-500-0
3255568;PDB12P-01M-C-N-330-0
3255570;PDB12P-01M-C-N-500-0