Roller-type dust collection blackboard brush and working method thereof

Abstract

The invention relates to a roller-type dust collection blackboard brush and a working method thereof. The blackboard brush comprises a roller, a rolling shaft, a flexible brush, a handle, a one-way rotating mechanism, a dust scraping mechanism, a dust outpouring mechanism for pouring chalk dust out of the blackboard brush, and a dust collection cover, wherein the rolling shaft passes through an axle center of the roller; the roller can be rotatably arranged on the rolling shaft; an opening is formed on the left side or the right side of the dust collection cover; the roller and the flexible brush are accommodated in an inner cavity of the dust collection cover; the rolling shaft is supported by two ends of the dust collection cover and is fixed with the dust collection cover; the flexible brush protrudes out of the peak of the opening of the dust collection cover; the dust scraping mechanism is arranged in the inner cavity of the dust collection cover and contacts the flexible brush; the dust outpouring mechanism is arranged close to the bottom of the dust collection cover or at the bottom of the dust collection cover; and the axial line of the handle is vertical to that of the roller. The roller-type dust collection blackboard brush has the advantages that: the blackboard brush moves up and down when used for brushing the chalk dust, the chalk dust stripped from a blackboard can be stuck to the flexible brush or fall on the flexible brush due to gravity action, the dust collection effect is good, the blackboard brush does not raise dust basically when used for brushing the blackboard, and the structure is simple.

Description

technical field [0001] The invention relates to a brush and working method for wiping dust, in particular to a roller-type dust-accumulating blackboard brush and a working method for wiping chalk dust and collecting the chalk dust wiped away from a blackboard. Background technique [0002] Existing blackboard brushes that can accumulate dust all move left and right in habitual thinking. For example, in the utility model patent whose application number is 98251847.1, a roller-type dust-free blackboard eraser is disclosed, which includes an eraser frame, a pin shaft, a roller, a felt layer and a handle. The utility model is designed with two symmetrical rollers. There is a one-way rotation mechanism on the drum, and a dust scraping piece corresponding to the felt layer on the drum is arranged in the eraser frame. When in use, although the left and right drums stop to wipe and the other rolls to remove dust, they are in the state of wiping and dusting alternately. Because the ...

AI Technical Summary

Problems solved by technology

Due to the left and right movement during work, there are also the above disadvantages

[0004] In the utility model patent whose application number is 91216322.4, a rolling dust-accumulating blackboard eraser is disclosed. Although a dust-accumulating groove is used at the bottom, and the dust-accumulating structure is simple, when in use, the blackboard eraser moves left and right on the blackboard. The chalk dust that is not attached to the sticky hair layer during the blackboard will fall down under the action of gravity, so a large part of the chalk dust cannot be collected; on the other hand, when wiping the blackboard, the hand must hold the middle of the blackboard brush Or you can only use force near the middle position, so you need to stand on tiptoe when wiping the higher position or you can't wipe it, and bend over a lot when wiping the lower position

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