Bidirectional self-adaptive throttle valve and refrigeration equipment

Abstract

A bidirectional self-adapting throttle valve at least includes a valve body, a first limiting block, a second limiting block, a first slider, a second slider, a first valve seat, a second valve seat, a first valve needle and a first valve needle spring, a second valve needle and a second valve needle spring, a first positioning spring, a second positioning spring and a positioning block arranged in the valve body. Under the action of fluid pressure, the first slider, the first valve needle and the first valve needle spring, the first positioning spring, the second positioning spring, the second valve needle and the second valve needle spring, the second slider and other components automatically open and close the corresponding valve port according to the pressure direction, and automatically adjust the opening degree of the corresponding valve port according to the size of the fluid pressure, so as to realize bidirectional self-adapting throttling. The utility model can realize variable flow bidirectional throttling, and under the damping effect of the corresponding valve needle spring and the corresponding positioning spring, the valve needle has small oscillation when moving, is high in reliability, and can simplify and automate the control problem of the throttling mechanism.

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