延长高粘度齿轮泵的寿命（一）

输送介质有着传递、润滑、密封和传热的特性。因此高粘度齿轮泵具备了功耗低、泄漏少、流量多等优点。

Transmission medium has a transmission, lubrication, sealing and heat transfer characteristics. Therefore, high viscosity gear pump equipped with low power consumption, less leakage, flow more and so on.

介质流动的难易程度充分体现了液体的粘度，粘度一旦过高便会增加内摩擦阻力，使输出功率降低，并造成能量浪费，从而造成系统温度过高。

Medium degree of difficulty fully reflect the flow of the liquid viscosity, viscosity will be increased once the high frictional resistance within, so that the output power down, and cause energy waste, resulting in system temperature is too high.

当输送介质确定了以后，应按照产品说明书上的指示操作，避免使用超出厂家推荐的流体介质的范围，时刻注意系统的工作温度牢记它的使用范围。如果输送介质的粘度指数高一些也可在某一较宽的温度范围内使用时。还要考虑到输送液体的粘度较高或系统在寒冷环境中流畅性，确保输送介质的凝点应该低于预期的最低作业温度；以及所要输送的介质是否与系统中的密封、垫圈、软管等橡胶材料具有相容性，若不相容应重新选择介质。

When the transmission medium identified, they shall be in accordance with the instructions on the product manual, to avoid exceeding the manufacturer"s recommended range of fluid medium, keep in mind bear in mind the system operating temperature range of its use. If the transmission medium viscosity index may also be higher in a wide temperature range of use. Also take into account the viscosity of the liquid delivery system, a higher or fluency in a cold environment, to ensure the transmission medium freezing point should be lower than the expected minimum operating temperature; as well as to whether the media delivery system, seal, gaskets, soft - piping and other rubber materials have a compatible, if the incompatibility should be re-selection medium.