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供應力士樂比例方向閥

Rexroth力士樂原裝德國進口比例方向閥4WRA6W05-1X/24NK4/M比例伺服方向閥

蘇州杭東機電設備有限公司代理經銷力士樂電磁方向閥、溢流閥、電磁球閥、單向閥、壓力閥、比例閥、伺服閥、柱塞泵、流量閥、葉片泵、液壓泵閥等產品行銷全國各地。

帶集成式放大板比例閥

首先，比例閥必須有一個配套的放大器，它接受來自于計算機，或者PLC，或者電位器（滑動變阻器）的控制信號，把0-20毫安微弱的信號放大到0-800毫安。計算機的信號太弱了。
然后，放大器把放大的信號傳送到電磁閥度，電磁閥依據傳來的信號大小，克服彈簧力，調節推桿的行程，輸出流量大約知1升/分鐘,壓力隨信號變化的控制油。
再后，控制油到達主閥芯的兩端，依據不同的壓力，推動閥芯移動相應的行程，因為閥芯本身有錐度的臺階，與閥體組合，不同的行程得到不道同的過流面積，再入版口壓力穩定的情況下，得到不同的流量。終實現比例功能。
比例閥是由計算機（或其他），放大器，比例電磁鐵，錐度臺階的閥芯，入口壓力補償閥（單聯可以不要），梭閥，內置卸荷閥（把多余的流量送回油箱）等構成的一個體權系。才能真正實現比例功能。

?4WRA 4WRAE 比例閥
?4WRE 4WREE 比例方向閥
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