What are the common structural forms of the barrel of pe film blowing machine? What are the characteristics of each?

What are the common structural forms of the barrel of pe film blowing machine? What are the characteristics of each? The common structural forms of the barrel are integral, segmented, bushing and bimetallic. (Integral structure barrel The integral structure barrel (see Figure 3-19) is widely used in extruders, but when the size of the extruder is small, the integral type barrel is generally used. This kind of barrel Cloth for heating and cooling device
What are the common structural forms of the barrel of pe film blowing machine? What are the characteristics of each?
The structure of common barrels includes integral type, segmented type, bushing and bimetal layer type.
(GG rdquo; Integral structure barrel Integral structure barrel (see Figure 3-19) is widely used in extruders, especially when the size of the extruder is small, the integral type is generally used. This This kind of barrel is more convenient to arrange the heating and cooling devices, and the temperature control is easy to ensure. The barrel processing accuracy is high.
(2) The segmented structure barrel is used in larger extruders and vented extruders. Because the barrel is divided into sections, the length of the barrel section is small, which brings convenience to machining; however, the inner diameter of the barrels of several sections and the same section structure are shown in Figure 3-20. ) Mainly as shown in Figure 3-20, the structure of the segmented barrel is difficult to achieve uniformity; in addition, the segmented barrel is connected with flanges. It also brings certain difficulties to the arrangement of the heating and cooling devices of the barrel. The control of heating and cooling will not be too uniform.
(3) In order to save precious alloy steel, the inner diameter of the pe blown film machine is sleeved or cast wear-resistant alloy. The barrel of the larger extruder is usually molded by a cast key, and then the inner hole is added after the inner hole is finished. Alloy bushing or cast a layer of wear-resistant alloy material.
The application of bushing type barrel or casting a layer of wear-resistant alloy machine in large extruder not only saves a lot of precious alloy steel, reduces equipment manufacturing cost, but also creates convenience for future barrel maintenance. Condition: When the alloy bushing of the barrel is severely worn. Just replace the bushing to allow the machine to work normally, saving equipment maintenance time.