Self-cleaning ventilation cabinet

The utility model discloses a self-cleaning type fume hood which comprises a fume hood body, a movable air draft mechanism and a filtering and adsorbing mechanism, a working windowsill is arranged on the fume hood body, and the movable air draft mechanism and the filtering and adsorbing mechanism are both arranged on the fume hood body. The utility model belongs to the technical field of ventilation cabinets, and particularly relates to a ventilation cabinet capable of supporting an exhaust fan by arranging a ventilation groove, utilizing a guide rod and a sliding block and matching with a first spring, a second spring and a sector gear to realize reciprocating motion of the exhaust fan, so that air exhaust is uniform and residual pollution gas is reduced. Polluted gas can be adsorbed and purified, and pollution to outside air is reduced. 本实用新型公开了自净型通风柜，包括通风柜柜体、活动抽风机构和过滤吸附机构，所述通风柜柜体上设有工作窗台，所述活动抽风机构和过滤吸附机构均设于通风柜柜体上。本实用新型属于通风柜技术领域，具体是指一种通过设置通风槽，利用导杆和滑块，对排风扇进行支撑，配合弹簧一、弹簧二和扇形齿轮，能够实现排风扇的往复移动，使得排风均匀，减少污染气体的残留，通过设置过