Pressure release valve device and filtering system and beverage machine applying same

The utility model relates to a pressure release valve device and a filtering system and a beverage machine using the same, and the pressure release valve device comprises a main valve body, a first valve core, a second valve core, a first valve core and a second valve core, the main valve body is further provided with a pressure relief port, the pressure relief port is connected with a pressure relief connector with a pressure relief flow channel, the pressure relief flow channel comprises a first flow guide section and a second flow guide section, a necking opening is formed in the connecting position of the first flow guide section and the second flow guide section and serves as a first overflowing opening, and a first pressure relief groove is formed in the surface of the first overflowing opening. A first pressure relief valve element is arranged at the first overflowing opening; in a natural state, the first flow guide section and the second flow guide section of the pressure relief flow channel are comm