Automatic erasing blackboard

Abstract

The invention provides an automatic erasing blackboard. The automatic erasing blackboard comprises a blackboard, an upper slide rail and a lower side rail, wherein the upper slide rail and the lower slide rail are positioned on the upper side and the lower side of the blackboard; a slide shaft A, a slide shaft B and a slide shaft C are arranged between the upper slide rail and the lower slide rail; a movable brush plate is arranged on the slide shaft A; the brush plate is connected with a water pipe; a wiper is arranged on the slide shaft B; a drier is arranged on the slide shaft C; the drier is connected with a hot air fan through an air pipe; meanwhile, a water groove is further formed below the lower slide rail. During use of the automatic erasing blackboard, chalk on the blackboard is cleared through the water-containing brush plate, water on the blackboard is wiped through the wiper, and the blackboard is dried through the drier. The operating time of the whole process is less than 1 minute, so that efficient operation is realized. Meanwhile, handwriting on the chalk blackboard is cleaned through water, so that freeness from dust is realized completely, and the health of students and teachers is protected.

Description

technical field [0001] The invention belongs to the field of teaching appliances, in particular to an automatic erasing blackboard. Background technique [0002] With the continuous development of society, more and more convenience products have been created, which has improved the quality of people's life and learning. Our health then became a topic of widespread public concern. The blackboard eraser is one of the most frequently used teaching aids in the teaching process. However, due to the lack of timely or thorough cleaning of the blackboard eraser, the blackboard eraser often accumulates too much chalk dust, making the blackboard less and less clean when the teacher wipes it. The earth affects the teaching efficiency and reduces the teaching quality, which is an urgent problem to be solved at present. [0003] According to the data from the Center for Disease Control and Prevention in my country, due to the carcinogens contained in the dust, the incidence of cancer a...

AI Technical Summary

Problems solved by technology

Among them, the prevalence rate of pharyngitis among teachers over 5 years is almost 100%, the prevalence rate of rhinitis is 39%, the prevalence rate of asthma is 43%, the prevalence rate of bronchitis is 8%, and the prevalence rate of pne

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