A blackboard with automatic water supply

Abstract

The invention discloses a blackboard capable of automatically supplying water. The blackboard comprises a blackboard body, a slide frame, an eraser base, an eraser body, a collecting tank, a water storage cavity, an ejector rod and a control device, wherein the water storage cavity is formed in the eraser base; a water passing hole is formed in the lower side part of the eraser base, and is provided with a diaphragm part; the diaphragm part consists of a pair of rubber pieces; the middle parts of the pair of rubber pieces are overlapped with each other; the ejector rod is arranged in the collecting tank, and is a through hollow structure; a water outlet part has a cavity; multiple water outlet holes communicated with the cavity are formed in the front end part of the water outlet part; when the front side wall is tightly contacted with the blackboard body, the blackboard body is butted 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 rubber pieces are separated, and the water storage cavity is communicated with the water outlet part through the ejector rod; and the control device controls a first driving mechanism and a second driving mechanism to alternately work. The blackboard realizes automatic erasing of chalk writing on the blackboard body.

Description

technical field [0001] The invention relates to a blackboard capable of automatic water supply. 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 capable of automatic water supply. [0004] Th...

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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