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熔體泵知識

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熔體泵、齒輪泵運用范圍 Scope of application

來源:鄭州巴特計量齒輪泵 發布時間:2013-11-02 08:39:26 瀏覽次數:

  將熔體泵與單螺桿或雙螺桿擠出機串聯使用時,能使整條生產線的效益顯著增加,應用熔體泵的主要好處是:

  1.穩定輸出壓力----能有效的降低擠出機參數引起的物料輸出不穩定及壓力脈動。

  2.提高產品質量----將擠出制品的尺寸公差降至小,減少廢料和降低廢品率。普通擠出機也能生產出高精度產品。

  3.提高擠出產量----降底了對螺桿的壓力要求,由原來的螺桿向模頭建壓,改為熔體泵向模頭建壓,螺桿可以高速高效的擠出,且可以 調節擠出機背壓,減少熔體在螺筒內駐留時間,穩定塑化過程,降低熔融溫度,提高制品產量和質量。

  4.降低單位能耗----有數據表明將擠出與熔體泵組合,其混煉質量和產量比單獨的擠出機大幅提高。加工每公斤物料一般可降低四分之一左右。

  5.延長整機壽命----使用熔體泵后擠出機螺筒內壓力降低,能大大降低螺桿和螺筒之間的磨損,減輕齒輪箱推力軸承的負荷,延長擠出 機壽命,擠出機在生產工藝中需要排氣的冒料問題也可迎刃而解。

  When melt pump and single screw or twin screw extruder are put into use with series connection, the benefit of whole extrusion line will be improved significantly. The main advantages of using melt pump:

  1. Stabilizing the output pressure--reducing the unstable output of material causing by the parameters of extruder and pressure pulsations.

  2. Improving the product quality--reducing the dimensional tolerance of extrusion product into minimum and reducing the rate of scraps and rejects.

  3. Increasing the extrusion output--reducing the screw pressure, changing the building pressure style from “screw to die” to “melt to die”, so the screw can extrude the products with high efficiency, meanwhile the back-pressure of extruder can be adjusted, reducing the melt residence time in screw cylinder, stabilizing the plasticizing process and reducing the melting temperature, improving the product quality and quantity.

  4. Reducing the unit energy consumption--some dates show that the combination of the extruder and melt pump, comparing with the extruder alone, can improve the milling quality and quantity remarkably. Energy consumption of per kilogram material can be reduced one-quarter.

  5. Prolonging the service life--the pressure of extruder screw cylinder can be lowered after using the melt pump. So the wear and tear between the screw and screw cylinder can be reduced consumedly.

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