关键词: 流体控制；顺序要求；四位七通阀；简化控制；双动气缸

Abstract: Control valves are the core components of fluid control. In order to make the fluid achieve specific functions according to human purposes, various types of control valves emerge one after another. In the production of manufacturing enterprises, the control of two single-stroke cylinders or one double-stroke cylinder requires two independent control valves. In order to simplify the control mode and improve safety, avoid the operation error of multiple cylinders with sequential control requirements, and improve the safety and reliability of production, this paper designs a four-position seven-way valve with sequential requirements, no control logic confusion, and can reduce the number of control valves through innovative ideas, the valve is used in the end face processing process of the engine cylinder head, and the main function is to control the double-stroke cylinder to expand and contract according to the sequence requirements, reduce the number of control valves, and compact structure. The valve has been in production for many years without fail, fully confirming the simple, efficient and reliable boundary requirements of a first-class tool. At the same time, the four-position seven-way valve described in this article provides a new solution for the industry's fluid control.

Key words: Fluid control; Sequence requirements; Four-position seven-way valve; Fimplified control; Double-acting cylinder