APL valve and anesthesia machine

Abstract

This utility model provides an APL valve and an anesthesia machine. The APL valve includes: a valve seat with an air inlet and an air outlet; a valve plate assembly on the valve seat corresponding to the air inlet, used to control the opening and closing between the air inlet and the air outlet; a valve body assembly on the valve seat and above the valve plate assembly, which includes a valve body main body, a valve cap rotatably disposed on the top of the valve body main body, and a valve cover rotatably disposed in the valve cap. The valve cap has multiple different scales, and the valve cap can rotate relative to the valve cover to adjust the correspondence between the valve cover and different scales. The top of the valve cover has a calibration groove, and a fastener passes through the calibration groove. The top of the valve cap has a fixing hole, and the fastener can fasten the calibration groove and the fixing hole; a valve core assembly movably disposed between the valve cover and the valve body main body, the top of which is movably embedded in the valve cover, and the bottom end passes through the valve body main body and abuts against the valve plate assembly. Rotating the valve cover can drive the valve core assembly to move, thereby adjusting the pressure applied by the valve core assembly. The APL valve of this solution has a built-in calibration function.

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