齿轮泵优点：自吸式;排出量恒定且振动很小;可以双向输送;由于较小的间隙，流量随粘度和压力变化不大。 Advantages of gear pump: self-priming; Constant discharge and the vibration is small; Can be two-way transmission; Due to the small clearance, the flow changing with viscosity and pressure is not big.

    齿轮泵缺点：由于较小的置换容积以及会磨损齿牙，所以只能输送干净的流体;不能空转;由于装配和定位精度高，所以加工误差要求很小。 Disadvantages: the gear teeth due to smaller displacement volume and will wear, so can only transport clean fluid;Don't idle;Due to the assembly and high positioning accuracy, so the machining error requirement is very small.

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