The rollers are installed on a roller shelf which is connected with a pump shaft, and the pump shaft is homocentric with the inner rim of a pump body.

其 滚轮是装在与泵轴联接的滚轮架上，泵轴和泵体的内缘是同心的。

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Loose soleplate screw of the roller shelf, and adjust the central height of the two rollers by increasing or decreasing cushion, then tighten the screw.

松开罗架的底板螺丝，用增垫和去垫的方法调整两罗拉的中心高度，然后再拧紧螺丝。

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By adjusting the axial position of the roller shelf and the pump body, gap between pressure-bearing pipes changes within a certain range, thereby the application scope of the pump head is expanded.

该蠕动泵通过调节滚轮架与泵体的轴向位置，使压管间隙在一定范围内变化。从而扩展了泵头的使用范围。

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