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.

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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;

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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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