Dustproof blackboard eraser for classroom

Abstract

The invention discloses a dustproof blackboard eraser for a classroom. The dustproof blackboard eraser comprises a main board frame and a top board frame, wherein the top board frame is detachably connected with the main board frame; one side of the main board frame is equipped with a brush in an attaching mode; one side of the top board frame is fixedly connected with a group of handles; the two ends of the top board frame are integrally equipped with end board frames; the end board frames are detachably connected with a mounting board frame; the mounting board frame is matched with one end of a guide rod; a slide base is arranged on the middle part of the guide rod in a penetrating mode; the slide base is arranged at one end of a water tank; the water tank is matched with a water extractor; the end part of the water extractor is equipped with a spray nozzle; and the top board frame is detachably connected with the main board frame through a group of bolts. The dustproof blackboard eraser for the classroom disclosed by the invention is great in wiping area, can be used for quickly wiping blackboard writings, saves time needed for blackboard wiping, is convenient to generate force for wiping; needed wiping times for wiping a blackboard are fewer, and chalk dust is not liable to fly and disperse; and meanwhile, water is sprayed to prevent dust, so that the chalk dust is prevented from diffusing.

Description

technical field [0001] The invention relates to the field of teaching aids, in particular to a dust-proof blackboard eraser for classrooms. Background technique [0002] In the teaching work, the teacher needs to write the teaching knowledge on the blackboard, and the blackboard eraser is a common tool that must be used to wipe the blackboard. At present, the commonly used blackboard eraser is mostly a structure with a brush attached to the wooden board, which does not have a dustproof and waterproof structure. The role of ash, in the process of use, although the chalk writing on the blackboard can be wiped off, the chalk dust is flying seriously. Teachers use such a blackboard eraser for a long time to wipe the blackboard. Because of respiratory diseases, a new type of blackboard eraser is now needed To solve this problem, prevent chalk dust from flying, and reduce the harm of chalk dust to teachers' bodies. Contents of the invention [0003] The object of the present in...

AI Technical Summary

Problems solved by technology

[0002] In the teaching work, the teacher needs to write the teaching knowledge on the blackboard, and the blackboard eraser is a common tool that must be used to wipe the blackboard. At present, the commonly used blackboard eraser is mostly a structure with a brush attached to the wooden board, which is not dust-proof. The role of dust, in the process of use, although the chalk writing on the blackboard can be wiped off, the chalk dust is flying seriously. Teachers use such a blackboard eraser for a long time to wipe the blackboard. Because of respiratory diseases, a new type of blackboard eraser is now needed To solve this problem, prevent chalk dust from flying, and reduce the harm of chalk dust to teachers' bodies

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