Double-pilot type slide valve

According to the double-pilot type slide valve, the piston assembly with the reset function is used, and the functions of a traditional piston and a reset spring are integrated on the piston assembly,so that the reset spring and a mounting cavity of the traditional three-position valve can be removed, only a pilot structure is reserved, and the service life of the three-position valve is prolonged. Compared with a traditional pilot structure, the size of the pilot structure is not obviously changed, the piston assembly is installed in the piston cavity of the pilot structure, and therefore the size of the slide valve is greatly reduced in the length direction. 本实用新型提供了一种双先导式滑阀，因为使用了具有复位功能的活塞组件，将传统的活塞和回复弹簧的功能集成在了活塞组件上，这样可以去掉传统三位阀的回复弹簧及其安装腔，只保留先导结构即可，而且本实施例的先导结构与传统先导结构在尺寸上并无明显变化，活塞组件装在先导结构的活塞腔内，因此滑阀长度方向上大大减小了尺寸。