锁气翻板卸灰阀为上下交替开闭，自动复位机构。
Air lock and dust discharge valve open or close in turn up and down.
当再次有电时，拉动拉索，拉索带动摆块，摆块另一端的复位机构带动摆块下移；
When the power again, pulling the cable, cable drives the swing block, the other end of the swing block reset mechanism drives the swing block down on the rack;
结合注塑模具设计实例，介绍杠杆先复位机构，并导出了杠杆先复位机构设计计算公式。
This article introduces the previous returning mechanism of lever and deduces the calculation formula about the mechanism with injection molding design as an example.
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