滤芯与油的相容性。带挖机的搅拌车既有金属滤芯,也有非金属滤芯,占比居多。它们都存在与系统中油的相容性问题。这些包括化学变化和热效应变化之间的兼容性问题。尤其是在高温条件下不受影响更为重要。因此,需要对各种滤芯进行高温油液相容性测试。
Compatibility between filter element and oil. The mixer truck with excavator has both metal filter element and non-metal filter element, accounting for the majority. They all have the problem of compatibility with the oil in the system. These include compatibility issues between chemical changes and changes in thermal effects. In particular, it is more important not to be affected under high temperature conditions. Therefore, it is necessary to test the high-temperature oil compatibility of various filter elements.
低温工作的影响。在低温下运行系统也会对自动装载混合器产生不利影响。因为在低温下,滤芯中的一些非金属材料会变得更加脆弱;并且在低温下,油液粘度的增加会导致压降升高,容易造成介质材料产生裂纹。
Effect of low temperature operation. Operating the system at low temperatures can also adversely affect the automatic loading mixer. Because at low temperature, some non-metallic materials in the filter element will become more fragile; And at low temperature, the increase of oil viscosity will lead to the increase of pressure drop, which is easy to cause cracks in medium materials.
油的周期性流动。系统中的流体流动通常是不稳定的。当流量变化时,会引起滤芯弯曲变形。在周期性流动的情况下,由于过滤介质材料的反复变形,会引起材料的疲劳失效,形成疲劳裂纹。在使用自上料搅拌车时,要养成良好的习惯,定期保养。
Periodic flow of oil. The fluid flow in the system is usually unstable. When the flow rate changes, the filter element will be bent and deformed. In the case of periodic flow, the repeated deformation of the filter medium material will cause the fatigue failure of the material and form fatigue cracks. When using the self loading mixer, form good habits and maintain regularly.
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