REXROTH換向閥

REXROTH換向閥 節(jié)能降噪新概念 只需在原有系統(tǒng)增加一個變頻器，即刻享有高效節(jié)能新動力

在過去數(shù)十年間，塑機行業(yè)采用比例及高頻響閥，并通過使用電子泵改進能量平衡始終處于技術(shù)的zui前沿。力士樂的DFE電子變量泵在動態(tài)性能和精度方面都得到了認可，已經(jīng)成為了塑機行業(yè)的標配。為了進一步節(jié)能，力士樂作為技術(shù)創(chuàng)新的*，提出了變轉(zhuǎn)速DFEn泵控系統(tǒng)。DFEn系統(tǒng)是基于DFE泵，通過標準異步電動機來承擔驅(qū)動功能，由力士樂動態(tài)變頻器Fe 負責控制電機的轉(zhuǎn)速，DFEn內(nèi)置的電子控制器控制變頻器的輸出。PLC只輸出壓力和流量指令到DFEn控制器, 與控制其它泵控或閥控系統(tǒng)一樣。 DFEn系統(tǒng)作為伺服泵系統(tǒng)的一種，其DFE泵的高響應(yīng)特性彌補了普通異步電機和變頻器的響應(yīng)慢的缺點，保證了系統(tǒng)的高響應(yīng)特性。得益于DFE泵擺角的快速相應(yīng)特性（100%到0 流量，響應(yīng)≤60ms），DFEn的響應(yīng)速度不亞于伺服電機配定量泵系統(tǒng)。可以幫助客戶有效縮短產(chǎn)品生產(chǎn)周期，提高產(chǎn)能。同時由于DFE泵*的負擺角功能，避免產(chǎn)生壓力過沖，可媲美伺服電機配定量泵系統(tǒng)的反轉(zhuǎn)功能。DFEn內(nèi)置電子控制器做閉環(huán)壓力流量控制保證了系統(tǒng)的高精度特性，保壓精度≤0.2%，流量重復精度≤0.2%。能夠大大減少產(chǎn)品飛邊等問題，提高產(chǎn)品合格率，降低生產(chǎn)成本。DFEn系統(tǒng)合理分配泵擺角與電機轉(zhuǎn)速達到耗電zui低，待機時，降低轉(zhuǎn)速，消除多余能耗。在平均負載情況下，使用DFEn系統(tǒng)比原電子泵系統(tǒng)節(jié)約55%的電能。另外，由于電機的變轉(zhuǎn)速驅(qū)動， DFEn系統(tǒng)將噪聲平均降低了10-15dB。 與一般伺服電機配定量泵系統(tǒng)相比， DFEn采購費用也相對較低，特別突出應(yīng)用于： - 為滿足大型機器大流量控制，不得不配置多套伺服電機泵組而使成本增加較多； - 因生產(chǎn)部分需長時間保壓、熔膠制品時，因伺服電機扭矩不夠而需加大伺服電機與驅(qū)動規(guī)格，而增加機器成本時。 DFEn系統(tǒng)工作在高壓、大流量條件下無時間限制，適合于任何機型。 DFEn也是市場上原廣泛使用的恒速普通異步電機泵系統(tǒng)節(jié)能升級的福音。只要在原有系統(tǒng)增加一個變頻器，如為DFEE則再升級先導閥至帶數(shù)字控制的先導閥即可。升級成本低，而節(jié)能效果明顯。 關(guān)于博世力士樂 博世力士樂是的傳動與控制技術(shù)專家。憑借在傳動、控制以及行走機械領(lǐng)域內(nèi)的豐富經(jīng)驗，博世力士樂為80多個國家， 50多萬家客戶提供量身定制的解決方案，是世界工業(yè)、工廠自動化及行走機械應(yīng)用市場上的*。2007年博世力士樂銷售額近54億歐元，擁有超過33,000多名專業(yè)員工。 自1978年開始，博世力士樂就開始了在中國的業(yè)務(wù)，并在上海、北京和常州三地建立了工廠。 更多信息請訪問：www.boschrexroth.com.cn 作者: 博世力士樂中國 塑機應(yīng)用組

4WE6電磁換向閥
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REXROTH換向閥
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