A stopcock vent device

Abstract

The embodiment of the application relates to a cock type ventilation device, comprising: a valve core in a columnar structure, a first flow channel and a second flow channel being communicated and being opened in a direction perpendicular to an axis direction of the valve core; a valve body being configured with a first channel and a second channel which are perpendicular and communicated, the openings of the first channel and the second channel each extending outward along an axis direction to form a channel extension; a flow area of the first channel or the second channel being greater than or equal to a flow area of the first flow channel or the second flow channel; the valve body being further provided with a mounting channel which is perpendicular to the first channel and the second channel, and the mounting channel penetrating through a meeting point of the first channel and the second channel, the valve core being rotatable and penetrating in the mounting channel, and the valve core being controlled to rotate to adjust a rotation angle, so that the first flow channel and the second flow channel are selectively communicated with the first channel and the second channel of the valve body, and switching of a ventilation path is realized. The problems of processing difficulty, large flow resistance and insufficient switching reliability of a ball-shaped valve core in a traditional ventilation device are solved.

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