Filter

The filter comprises a barrel (1), an air inlet (1.1) is formed in the barrel (1) or a top cover (2), an exhaust pipe (3) is connected to the top cover (2) on the top of the barrel (1) in a penetrating mode, a rotating piece (4) is movably arranged at the end, located in the barrel (1), of the exhaust pipe (3) in a sleeving mode, a filter element (6) is installed at the bottom of the rotating piece (4), and the air outlet end of the top of the filter element (6) is communicated with the air inlet in the bottom of the exhaust pipe (3). According to the filter disclosed by the invention, by purifying the filter element, recycling of the filter element is realized, so that the service life of the filter element is prolonged. 本发明一种过滤器，包含有筒体（1），筒体（1）或顶盖（2）上安装有进气口（1.1），筒体（1）顶部的顶盖（2）上穿接有一抽气管（3），所述抽气管（3）位于筒体（1）内的一端上活动套装有转动件（4），转动件（4）的底部安装有滤芯（6），该滤芯（6）的顶部出气端与抽气管（3）的底部进气口相连通。本发明一种过滤器，通过净化滤芯，实现了滤芯的循环使用，从而延长了其使用寿命。