Blackboard with dust removal and static electricity prevention functions
An anti-static, blackboard technology, applied in the field of teaching equipment, can solve the problems of hard to erase, rough, hard to erase, etc., to achieve the effect of eliminating the hidden danger of chalk dust, improving the working environment, and promoting the progress of teaching
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[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0020] Such as figure 1 The dust-removing and anti-static blackboard shown includes a board body, dust removal device, dust suction device, erasing device and electric control center device. Its special features are:
[0021] The ash removal device includes an ash screen that is prone to static electricity and an electric shaft. The ash screen is rolled and wound on the electric shaft. Pulleys are provided at the upper and lower ends of the ash screen, and the electri
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