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![電磁脈沖閥膜片](static/picture/2_1JIYc.jpg)
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電磁脈沖閥是脈沖袋式除塵器清灰系統的噴吹氣路“開(kāi)關”,閥體内膜片其正常運行的關鍵所在。脈沖閥膜片包含一個來封堵壓縮空氣管道(dào)或者說(shuō)封堵閥的出氣口的鉚頭,放氣卸荷孔和四周有固定支撐用的螺栓孔。膜片將(jiāng)閥體分爲前後(hòu)兩(liǎng)個氣室,其後(hòu)控的面(miàn)積大于前控的面(miàn)積,氣壓作用力大。
脈沖閥膜片把脈沖閥分爲前後(hòu)二個氣室,當電磁脈沖閥在脈沖袋式除塵器清灰系統中接通清潔壓縮空氣時(shí),壓縮空氣通過(guò)節流孔,進(jìn)入後(hòu)氣室,此時(shí)後(hòu)氣室的壓力將(jiāng)膜片緊貼閥的出氣口,脈沖閥處于關閉狀态,脈沖控制儀輸出信号,使脈沖閥銜鐵移動,閥後(hòu)氣室放氣孔打開(kāi),後(hòu)氣室失壓,使膜片後(hòu)移,壓縮空氣通過(guò)閥的出氣口噴吹,脈沖閥處于開(kāi)啓狀态噴吹開(kāi)始,脈沖控制儀輸出的電信号消失,脈沖閥的電磁先導頭銜鐵複位,後(hòu)氣室放氣孔關閉,後(hòu)氣室壓力升高使脈沖閥膜片緊貼閥的出氣口,脈沖閥處于關閉狀态,噴吹停止,噴吹時(shí)間的長(cháng)短氣量大小由控制儀來進(jìn)行控制。
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