*美國(guó)Parker派克L06系列2通比例調(diào)速閥
Parker派克DUR*L06系列2通比例調(diào)速閥:使用DUR*L06系列比例調(diào)速閥可以對(duì)液壓執(zhí)行元件(液壓缸、液壓馬達(dá))的速度進(jìn)行電氣式的遙控調(diào)節(jié)。通過(guò)所裝的補(bǔ)償器壓力可以使流量與負(fù)載無(wú)關(guān)(負(fù)載感應(yīng))。借助壓力補(bǔ)償器可以進(jìn)一步地保證與溫度無(wú)關(guān)。如果閥裝有位移反饋裝置,那么應(yīng)對(duì)測(cè)量閥芯的位移和壓力補(bǔ)償器的開度進(jìn)行電氣監(jiān)控和位置調(diào)節(jié)。借此可以改善滯后和重復(fù)精度。在反方向上油液可以流經(jīng)單向閥。如果既要流入執(zhí)行元件又要使流出執(zhí)行元件(例如:差動(dòng)液壓缸)的流量與負(fù)載壓力無(wú)關(guān)的話,那么可以借助一個(gè)整流器中間板使得油流總是流經(jīng)調(diào)速閥的工作方向(從A到B)。
Parker派克PCM系列2通調(diào)速閥:用于對(duì)流量進(jìn)行壓力補(bǔ)償?shù)恼{(diào)節(jié)。作為壓力變化的結(jié)果,所調(diào)節(jié)的值可以在±5%的公差范圍內(nèi)進(jìn)行變化。當(dāng)然粘度的變化也會(huì)產(chǎn)生影響并且必須引起注意。
Parker派克N系列截止與節(jié)流閥:2級(jí)針狀錐面的截止與節(jié)流閥的調(diào)節(jié)旋鈕的前3圈為第1級(jí),可以對(duì)流量進(jìn)行靈敏地調(diào)節(jié)。后3圈為第2級(jí),其具有普通的節(jié)流特性。為了減小粘度的影響,結(jié)構(gòu)尺寸為200至600的閥可以采用帶矩形切口的圓柱式針閥。流量與壓力和粘度有關(guān)。
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派克D91F系列比例換向閥美國(guó)Parker上??偞?/strong>
Parker派克比例換向閥D91F系列是一種帶有集成的電子元件的高動(dòng)態(tài)特性的流量閥和方向閥的集成調(diào)節(jié)閥,由比例電磁鐵控制帶電反饋的直動(dòng)型比例換向閥,可以同時(shí)控制液流的流量及流動(dòng)方向。該閥主級(jí)的閥芯位置可調(diào),內(nèi)部結(jié)構(gòu)可分滑閥位置反饋、載荷壓力反饋和載荷流量反饋;閥的級(jí)數(shù)可分單級(jí)、雙級(jí)和多級(jí),適用于閉環(huán)控制回路的精確的和動(dòng)態(tài)的位置調(diào)節(jié),廣泛應(yīng)用在機(jī)床、輕工、冶金、礦山、航天等行業(yè)液壓系統(tǒng)中。
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派克D91F系列比例換向閥美國(guó)Parker上海總代理
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