產品規格BY-06-25-70,BY-06-25-90,比例先導式溢流閥包裝說明紙箱驅動方式電磁
結構原理電磁閥
級數4級/6級
品牌乾銳鋒
電機功率3kw
流量100l/min
壓力31.5mpa
安裝板式安裝
這種閥是液壓系統中使用普遍的,其可依靠手動、機動或電磁鐵操控,閥口只能進行“開”或“關”的調節,閥口開度大小若被調定則不可再較變。這種靠調節手柄、凸輪等結構設定的壓力、流量和方向參數均不可連續按比例進行控制,且控制精度并不高,除非操作者再次手動調節,否則數值仍不改變,。
究其上述,這類閥無法較好的滿足高質量控制系統的操作要求,但由于價格相對實惠,可適應大批中端液壓系統的技術要求。
(二)伺服閥
這種閥主要是指電液伺服閥,在接收電氣模擬信號后,可相應的調制流量與壓力,將信號再放大,它初出現于二戰時期,目的在于滿足液壓系統向高速、高精度、大功率、高度自動化方向發展的需求,武器成為該技術的受益對象。隨著時間的推移,在響應速度要求快、控制精度要求高的液壓伺服系統中,使用伺服閥作為控制閥,是基于該閥具有輸出效率高、反應速度快和可電氣操縱、控制性良好等顯著優勢,由此其被廣泛應用于要求控制準確、跟蹤迅速和程序控制能靈活變動的特定場合。
電液伺服閥是一種理想的電子→液壓接口,可便捷的實現電信號→機械位移量→液壓信號的切換,并經放大輸出與電控信號“連續成比例”的液壓功率。與通斷式開關閥相比,這類閥的成本較高,對液壓系統有嚴格的污染控制要求以及閉環系統的反饋要求,這都使得電氣控制變得較為復雜,維修難度也相應提高,一定程度上限制了該元件的應用。
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