A zero-energy wet-type vacuum cleaner

Abstract

The invention relates to a zero-energy-consumption wet type dust collection board eraser. The zero-energy-consumption wet type dust collection board eraser comprises a box, a transmission mechanism in the box and a sealing rubber ring arranged outside the box. The zero-energy-consumption wet type dust collection board eraser is characterized in that the box can be opened and comprises an upper box cover, upper box cover ventilation holes are formed in the upper box cover, each upper box cover ventilation hole is composed of a plurality of small holes, and top sponge is arranged on the lower surface of the upper box cover; a rubber roller through hole is formed in the center of a bottom plate of the box, two bottom plate ventilation holes are symmetrically formed with the rubber roller through hole as an axis, the bottom plate ventilation holes are located under the upper box cover ventilation holes, felt is fixed to the lower surface of the bottom plate, and the length of the felt is matched with that of the bottom plate; the sealing rubber ring is arranged on the lower portion of the bottom plate of the box in a sleeving mode and is made of a rubber material, a rectangular ring is arranged on the upper portion of the sealing rubber ring, a hollow rectangular pyramid is arranged on the lower portion of the rubber sealing ring, and adhesion sponge is arranged on the inner side of the hollow rectangular pyramid.

Description

technical field [0001] The invention relates to the technical field of teaching supplies, in particular to a zero-energy wet-type dust-absorbing eraser. Background technique [0002] In the daily teaching work of teachers, eraser is indispensable. And traditional blackboard eraser has shortcoming again, can produce a certain amount of chalk dust when wiping, and chalk dust can affect the health of teachers and students. [0003] The electric dust removal board eraser solves the problem of chalk dust flying randomly to a certain extent, but it consumes a certain amount of electric energy, which does not conform to the concept of energy saving and emission reduction. [0004] The Chinese patent with application number 201510458018.0 discloses a mechanical double-wheel train dust-removing eraser. Although this eraser is also a zero-energy application without power input, the transmission mechanism used is relatively complicated, and the ratchet is used to ensure that the erase...

AI Technical Summary

Problems solved by technology

However, there are disadvantages in the traditional blackboard eraser. When wiping, a certain amount of chalk dust will be produced, which will affect the health of teachers and students.

[0003] The electric dust removal board eraser solves the problem of chalk dust flying randomly to a certain extent, but it consumes a certain amount of electric energy, which does not conform to the concept of energy saving and emission reduction

[0004] The Chinese patent with application number 201510458018.0 discloses a mechanical double-wheel train dust-removing eraser. Although this eraser is also a zero-energy application without power input, the transmission mechanism used is relatively complicated, and the ratchet is used to ensure that the eraser box The fan in the body always keeps one direction, but doing so will make the fan turn when the eraser is swung in one direction on the blackboard, and the fan will be "locked" to stop when the eraser is swung in the other direction. Determined by the characteristics, this will greatly affect the dust removal and vacuuming effect of the eraser, and this type of eraser requires the transmission mechanism to be in close contact, which is difficult during production and installation

The Chinese patent No. ZL201020151041.8 discloses a dust-removing board eraser. The board eraser is provided with a dust-removing cover. When working, there is a gap between the board eraser and the blackboard surface, and it is difficult to closely contact with the blackboard surface. Dust will fly out along the gap. Can't achieve good dustproof effect

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