Internal gear pump is the small gear wheel, the big gear for driven wheel, in work big gear with small gear cocurrent rotation.

内啮合齿轮泵中的小齿轮是主动轮，大齿轮为从动轮，在工作时大齿轮随小齿轮同向旋转。

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High viscosity gear pump does not generate pressure, it is only the output flow. Pressure is low or no pressure, high viscosity gear wheel pump don't inhale the liquid or leakage is serious.

高粘度齿轮泵并不能产生压力，它只是输出流量。压力低或无压力，说明高粘度齿轮泵没有吸入液体或泄漏严重。

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Secondly, analyzing statics characteristic of the multi-gear pump demonstrates that radial hydraulic pressure, meshing force and resultant force are balanced on the center wheel.

其次，对多齿轮泵的静力学特性作了分析，证明了中心轮径向液压力、啮合力及总作用力平衡。

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