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前言——众所周知,由于气动系统具有体积小、重量轻、反应灵敏、介质清洁、直观易懂、便于普及等优点,在国外,三十年代已在航空上成功地使用,六十年代初气动技术很快地应用到民用工业上去。在实现生产自动化的过程中,气动技术亦作为一种重要的控制方式被工程技术人员在设计中采用,特别在要求清洁度较高的轻纺及食品工业的包装机、流水生产线上,更体现出气动系统的独特优点。目前,我国引进的机器和设备中的气动控制系统成倍增加,带进的气动元件来自世界各地,加上我国十几个气动元件专业生产厂所生产的元件,其数量之大,规格品种之杂,使人很难统计出确切的数字,因此对老设备的维
Foreword - As we all know, the pneumatic system has the advantages of small volume, light weight, responsiveness, clean media, intuitive and easy to popularize. In the foreign countries, the 1930s have been successfully used in aviation. In the early 1960s, pneumatic technology Quickly applied to civilian industry. In the process of production automation, pneumatic technology is also used as an important control method by engineering and technical personnel in the design, especially in the textile and food industry requires a higher degree of cleanliness of the packaging machine, assembly line, the more reflected Out of the unique advantages of pneumatic systems. At present, the pneumatic control system introduced by our country is multiplied. The pneumatic components brought in come from all over the world. Coupled with the components produced by more than a dozen of pneumatic components in our country, the quantity, the variety Miscellaneous, making it difficult to statistics the exact figure, so the dimension of the old equipment