solenoid valve

Abstract

The application provides an electromagnetic valve, which comprises a valve body assembly having a valve cavity and a first valve port; a first core iron assembly fixedly connected with the valve body assembly; a second core iron assembly movably arranged in the valve cavity; a piston assembly movably arranged in the valve cavity and located on a side of the first core iron assembly away from the second core iron assembly, the piston assembly having a second valve port; and a valve needle assembly movably arranged in the valve cavity and connected with the second core iron assembly; wherein, in an energized state of the electromagnetic valve, the first core iron assembly is attracted to the second core iron assembly; one end of the valve needle assembly closes the second valve port, the other end of the valve needle assembly abuts against the second core iron assembly; the piston assembly closes the first valve port; and the second core iron assembly and the first core iron assembly have a gap H. The technical scheme provided by the application can solve the problem that the second core iron assembly and the first core iron assembly of the electromagnetic valve in the prior art will collide and generate noise when being attracted.

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