Eraser dust collector for teaching

Abstract

The invention discloses an eraser dust collector for teaching. The eraser dust collector comprises a device body, wherein the device body mainly comprises a driving wheel, a transmission wheel, a rack, a linkage wheel and a slide plate; the upper end of the device body is fixedly connected to a fixation frame and the upper end of the fixation frame is fixedly connected to the driving wheel; the transmission wheel is disposed on the left end of the driving wheel and the transmission wheel is fixedly connected to the device body; the upper part of the driving wheel is pressed against the rack, and the rack is fixedly connected to a movable frame; and the lower part of the movable frame is in hinged connection to a connecting rod, the lower end of the connecting rod is in rotatable connectionto the upper part of a rotary rod, the lower part of the rotary rod is fixedly connected to the linkage wheel, the lower part of the linkage wheel is in rotatable connection to a push handle, the push handle is in rotatable connection to the slide plate, and the upper surface of the slide plate is connected to a brush for rubbing and wiping of an eraser. The device has the beneficial effects thatthe upper end is made by a transmission wheel to move back and forth from left to right and front right to left; the lower end is driven by a linkage mechanism to move reversely back and forth at thesame time when the upper end moves back and forth; the upper end and the lower end of the device realizes continuous rubbing and wiping in opposite directions by the linkage mechanism; falling dust is blown out by a fan; and dust removal is more thorough and effective.

Description

technical field [0001] The invention relates to a teaching product, in particular to a blackboard eraser dust removal device for teaching. Background technique [0002] The use of blackboards in the teaching process is very common. The survey found that the most common occupational disease among educational staff is pneumoconiosis. Pneumoconiosis plagues most teachers and tens of thousands of practitioners are infected with pneumoconiosis every year. The main cause of pneumoconiosis is dust particles. Inhalation, there are many devices with good dust removal effect on the market, but there are very few devices for teaching work. [0003] In recent years, with the continuous development of education, teaching chalk dust has attracted more attention. Many people will start from the design of utensils to replace blackboards and blackboard erasers to overcome the unenvironmental problems during the use of blackboards and blackboard erasers. After our campus visits and market re...

AI Technical Summary

Problems solved by technology

The uncleanness and cleaning effect of the blackboard eraser are affected by the use time

[0004] When a large amount of chalk dust is accumulated on the blackboard eraser, it is difficult or impossible for the blackboard eraser to absorb the chalk dust. At this time, the blackboard eraser will not only clean the chalk writing effect, but also affect the quality of teaching if it is not wiped clean, and students will not be able to learn knowledge well. During the process of wiping the blackboard, a large amount of dust will fly into the air, which will affect the health of teachers and students. At this time, most people will choose to find a wall outside the classroom, pat the blackboard eraser, and then continue to use it. This has caused great inconvenience and pollution

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