An adjustable air vent structure for a portable inhalation device

Abstract

This utility model relates to an adjustable air vent structure for a portable inhalation device, comprising an inner tube and an outer tube. An annular groove is formed on the outer circumferential surface of the inner tube, and the outer tube is sleeved on the annular groove. The inner and outer tubes are coaxially arranged, and the outer tube can rotate around its axis. A first air inlet is formed on the inner tube, and a corresponding second air inlet is formed on the outer tube. The outer tube controls the overlap area of ​​the second air inlet and the first air inlet by rotation. By opening the first and second air inlets at corresponding positions on the inner and outer tubes, and by rotating the outer tube, the overlap range of the first and second air inlets can be controlled, thereby achieving precise control of suction power without the need to replace parts or use preset gears, meeting the personalized needs of different users for suction strength.

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