An upper cover plate can also be arranged between the panel body and the steel plate, and the panel body, the upper cover plate and the steel plate are fixedly connected.
本实用新型板体、钢板之间还可设置上盖板，板体、上盖板、钢板固定连接。
The exterior insulation plate and the upper observation cover adopt stainless steel, to improve corrosion resistance and extend service life.
外保温板和上观测盖采用不锈钢板制作，提高抗腐蚀能力，延长设备使用寿命。
Upper device — includes parts of upper casing, top cover, discharge outlet (with anti back feed plate), head shaft and backstop.
上部装置——有上部机壳、上罩、卸料口(装有防回料板)、头轴装配、逆止器等部件。
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