Dust-free blackboard eraser
A technology of blackboard eraser and dust box, which can be applied to blackboard or slate cleaning devices, printing, office supplies, etc. It can solve the problems that chalk dust is easy to contaminate hands, face and body, affect health, and high production cost. Achieve better dust removal effect, simple and compact structure, and low cost
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[0008] A dust-free blackboard eraser, which includes a felt 1 and a box body. The felt 1 is uniformly glued and fixed on one surface of the box body in a row; the box body is provided with a dust suction box 4 and a fan 7, and the dust box 4 is next to the felt 1 set, on the box wall between the vacuum box 4 and the felt 1, a number of through holes 2 are evenly set at the gap between the rows of felt; the fan 7 is set on the rear side of the vacuum box 4, and the vacuum box 4 The box wall between the fans 7 is provided with a filter screen 3; the box body is also provided with a water box 8, a dust box 5 and a switch 6. The water box 8 is arranged at the rear of the dust box 4, above the fan 7, the water The box 8 is provided with a rubber plug 10, and a water mist generator 9 is provided on the common side wall of the water box 8 and the dust box 4, and the opening of the water mist generator 9 faces the dust box 4; the dust box 5 is provided Below the dust box 4 and communic...
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