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PP電磁閥的設計理念分享
 
    PP電磁閥設計要解決的主要問題是密封問題,必須通過對電磁力、彈簧力和氣體壓力的計算確保PP電磁閥斷電時氣路被隔斷,在通電時電磁力能夠克服彈簧力和氣體壓力迅速打開氣路。同時合理設計密封結構,選用合適的材料保證PP電磁閥在高溫(+50℃)和低溫(-20℃)環境中正常工作。
 
    PP電磁閥結構設計
    要實現PP電磁閥密封要求,首先要保證主要密封件的結a構設計合理,加工容易保證。參考進口減壓閥的工作原理,進行了如下改進設計。

    閥桿的設計
    PP電磁閥的密封形式是利用閥桿兩端錐面,通過閥桿的移動分別密封入口端和放氣口端。這種密封形式要求閥桿的加工精度很高,特別是閥桿兩端錐面的同軸度要求在0.01mm以內。這兩錐面用一般數控機床加工必須經過在兩次定位分別加工,錐面同軸度要求很難保證,因此進口PP電磁閥在使用過程中性能很不穩定,使用壽命較短,而國內傳統PP電磁閥只能應用于低壓工作范圍。 
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