Amenity Design of Blackboard Eraser

摘要

According to the problem that chalks will create dust, coming up with the idea of electronic blackboard erasers. When wool felt wiping off the writing, micro-motor drives fan to rotate. It eliminates air and form a great pressure to outside, dirt and dust are drawn into the machine by suction. Through filtering, dusts will be collected into a special dust collector. After testing, more than 95% of dusts can be drawn into electronic blackboard eraser. It has a powerful ability to remove dusts.