壳体上有标准的螺孔与阀门或支架相连。中间输出轴为一个标准的内八角。

There is standard bolt hole connecting with the valve or bracket. The output axis in the middle is a standard internal octagon.

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来自于挤出机的物料在吸入口进入两个齿轮中间，并充满这一空间，随着齿的旋转沿壳体运动，最后在两齿啮合时排出。

Extruder from inhaling the material into the mouth of two intermediate gears, and with this space, with the teeth of the shell along the rotating movement, in the last two teeth from when mating.

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中间部位视为整体环的一部分，按壳体理论应力分析方法计算。

The mid part is regarded as a segment of the whole ring and is calculated by the method of stress analysis which is based on the theory of shell.

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