A blackboard with the function of collecting ash

Abstract

The invention discloses a blackboard with a dust collecting function. The blackboard comprises a blackboard body, a side framework, an eraser base, a collecting slot, a water storage cavity, an ejector rod, a first drive mechanism, a second drive mechanism and a control device; the bottom of the collecting slot is backwards extended with an inserting part; an insert slot is formed in the lower end part of the eraser base; the inserting part is inserted into the insert slot, so that the collecting slot is connected to the lower side part of the eraser base; the water storage cavity is formed inside the plate eraser base, a water penetrating hole is formed inside the lower side part of the eraser base; the water penetrating hole is equipped with a diaphragm part which is composed of a pair of rubber sheets; the middle parts of the pair of the rubber sheets are superposed with each other; the ejector rod is arranged in the collecting slot; the blackboard body abuts against one end of the ejector rod, and the other end of the ejector rod applies pressure to the diaphragm part, so that the middle parts of the pair of the rubber sheets are separated from each other; and the control device controls the first drive mechanism and the second drive mechanism to alternatively work. The blackboard realizes automatically erasing chalk writings on the blackboard body.

Description

technical field [0001] The invention relates to a blackboard with dust collecting function. Background technique [0002] Although electronic whiteboards are increasingly used in the field of classroom teaching, it is a time-consuming and laborious task to completely replace the equipment, and blackboards are still the most commonly used teaching aids. Especially for some teachers with many years of teaching experience, chalk writing on the blackboard has almost become an important part of their teaching. But the inconvenience of the traditional blackboard is that at the end of each class, or before writing on the blackboard needs to be rewritten, the chalk writing on the blackboard needs to be manually erased. On the one hand, it is a waste of time, and on the other hand, chalk dust is also likely to have adverse effects on human health. Contents of the invention [0003] The invention designs and develops a blackboard with ash collecting function. [0004] The technic...

AI Technical Summary

Problems solved by technology

But the inconvenience of the traditional blackboard is that at the end of each class, or before writing on the blackboard needs to be rewritten, the chalk writing on the blackboard needs to be manually erased

On the one hand, it is a waste of time, and on the other hand, chalk dust is also likely to have adverse effects on human health.

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