Wet-type and dust-free blackboard cleaner

Abstract

The invention discloses a wet-type and dust-free blackboard cleaner and belongs to the technical field of teaching equipment. The wet-type and dust-free blackboard cleaner comprises a fixed dismantling part, a single-direction and single-step controlling part and a wiping and cleaning part, wherein the fixed dismantling part comprises a fixed sleeve, a connecting block and a mounting spring, the connecting block is arranged in the fixed sleeve, the mounting spring is arranged between the fixed sleeve and the groove of the connecting block, a sliding key is fixedly installed on the connecting block and matched with a key groove in the fixed sleeve, and a fixed key is fixedly installed on the connecting block; the single-direction and single-step controlling part comprises a pawl, a ratchet wheel, a connecting spring and a bearing, a boss is arranged on the pawl, ratchet wheel grooves are formed in the ratchet wheel at 90-degree intervals, the ratchet wheel grooves are matched with the pawl, a gap is reserved between the highest point of the ratchet wheel grooves and the inner wall of the fixed sleeve, and the gap is matched with the boss of the pawl; the wiping and cleaning part comprises a water storing pipe, a piece of dry felt cloth and a piece of wet felt cloth, the water storing pipe is fixedly connected with the ratchet wheel in a sealing mode, and the wet felt cloth is fixedly installed on the water storing pipe through an open groove in the water storing pipe.

Description

technical field [0001] The invention belongs to the technical field of teaching equipment, in particular to a wet dust-free blackboard cleaning device. Background technique [0002] At present, push-pull movable blackboards have been widely used in various schools and education and training institutions. The surface of the blackboard has been cleaned with ordinary chalk wipes, but the result is that a large amount of chalk dust is scattered in the air, not only Affect the health of teachers and students, and the work of wiping the blackboard has also taken up a large amount of teaching time. However, there are currently no mature products for blackboard cleaning on the market, and most of the existing products cannot achieve efficient cleaning, or cannot be truly dust-free during the cleaning process. Contents of the invention [0003] Aiming at the problems existing in the prior art, the present invention provides a wet dust-free blackboard cleaning device, which is suit...

AI Technical Summary

Problems solved by technology

[0002] At present, push-pull movable blackboards have been widely used in various schools and education and training institutions. The surface of the blackboard has been cleaned with ordinary chalk wipes, but the result is that a large amount of chalk dust is scattered in the air, not only It affects the health of teachers and students, and the work of wiping blackboards takes up a lot of teaching time

However, there are currently no mature products for blackboard cleaning on the market, and most of the existing products cannot achieve efficient cleaning, or cannot be truly dust-free during the cleaning process

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