Dust-free blackboard eraser

Abstract

The invention provides a dust-free blackboard eraser, belonging to a cleaning tool. The dust-free blackboard eraser comprises felt and a box body. The felt is uniformly adhered to a surface of the box body in rows; the box body is internally provided with a dust absorption box and a fan; the dust absorption box is arranged close to the felt; a plurality of through holes are uniformly arranged on the box body wall between the dust absorption box and the felt and among the gaps of the felt; the fan is arranged at the rear of the dust absorption box; a filtering screen is arranged on the box body wall between the dust absorption box and the fan; the box body is also internally provided with a water box, a dust collection box and a switch; the water box is arranged at the rear of the dust absorption box and above the fan; a water mist generator is arranged on the shared side wall of the water box and the dust absorption box; the opening of the water mist generator faces to the interior of the dust absorption box; the dust collection box is arranged below the dust absorption box and communicated with the dust absorption box; the dust collection box can be pulled out of the box body; and the switch is arranged on the rear side surface of the box body and connected with the circuits of both the fan and the water mist generator. The dust-free blackboard eraser has the advantages of simple structure, low manufacture cost and good dust absorption effect and is convenient to use.

Description

technical field [0001] The invention relates to a general cleaning tool, in particular to a dust-free blackboard eraser capable of sucking chalk dust. Background technique [0002] In the process of wiping the blackboard with the existing common blackboard eraser, the chalk dust will continue to fall and spread around the blackboard. The user and the people around him are easy to inhale the chalk dust in the process, which affects the health of the body. Healthy, at the same time a large amount of chalk dust is also easy to contaminate hands, face and body, causing pollution. After patent retrieval, we have invented more than a thousand inventions and creations involving blackboard erasers. However, these patents have not been implemented or promoted. The fundamental reason is that the structure with good dust removal effect is complicated, the production cost is high, and the dust removal with simple structure and low cost The effect is poor. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0002] In the process of wiping the blackboard with the existing common blackboard eraser, the chalk dust will continue to fall and spread around the blackboard. The user and the people around him are easy to inhale the chalk dust in the process, which affects the health of the body. Healthy, at the same time a large amount of chalk dust is easy to contaminate hands, face and body, causing pollution

After patent retrieval, we have invented more than a thousand inventions and creations involving blackboard erasers. However, these patents have not been implemented or promoted. The fundamental reason is that the structure with good dust removal effect is complicated, the production cost is high, and the dust removal with simple structure and low cost less effective

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