Fully automatic environmentally friendly blackboard eraser

Abstract

The invention discloses a full-automatic environment-friendly blackboard eraser. When the traditional blackboard eraser is used, the time and the labor are wasted; the traditional blackboard eraser has shortcomings that a blackboard cannot be cleaned thoroughly and dust pollution exists; and the existing automatic blackboard eraser cannot clean the blackboard thoroughly, and is poor in dust removal effect. A frame is fixed on a wall; two screws are placed horizontally and are supported on the frame vertically through bearings; each nut and the corresponding screw form a thread pair; the two nuts are respectively welded with the two ends of the blackboard eraser; the two screws are connected with each other through a synchronous belt mechanism; a motor drives a belt pulley on one of the screws; a water tank is divided into a clean water chamber and a sewage collecting chamber via a filtering membrane; the bottom of a water draining tube is connected with the clean water chamber through a water pump; the top of the water draining tube and the bottom of a water distributing tube in the blackboard eraser are positioned at the same height; the bottom of a sewage collecting tube is communicated with the sewage collecting chamber; the top of the sewage collecting tube is communicated with a sewage tank on the bottom of the frame; and a travel switch is connected with the water pump and controls opening and closing of the water pump. The full-automatic environment-friendly blackboard eraser is simple in structure and high in efficiency, and is full-automatic; and dust can be removed thoroughly.

Description

technical field [0001] The invention belongs to the field of teaching instruments, in particular to a fully automatic environment-friendly blackboard eraser. Background technique [0002] As we all know, the blackboard is an indispensable teaching aid in our daily study. No matter from primary school to university, blackboards are used. Traditional blackboard erasers are not only time-consuming and laborious, but also have the disadvantages of unclean blackboard and dust pollution. Therefore there are many new blackboard erasers at present. For example, there is a kind of blackboard eraser, which adopts the tuyere to collect dust in the aspect of dust removal. Although it can collect some dust and reduce air pollution, there is still the problem that the blackboard eraser is not clean; although there is also an automatic blackboard eraser that can also automatically erase words, But its blackboard eraser uses felt cloth, and there is no cleaning device to remove the dust on...

AI Technical Summary

Problems solved by technology

For example, there is a kind of blackboard eraser, which adopts the tuyere to collect dust in the aspect of dust removal. Although it can collect some dust and reduce air pollution, there is still the problem that the blackboard eraser is not clean; although there is also an automatic blackboard eraser that can also automatically erase words, But its blackboard eraser uses felt cloth, and there is no cleaning device to remove the dust on the felt cloth

Generally speaking, although many automatic blackboard erasers have appeared at present, the overall dust removal effect is not good, the blackboard is not clean, and the effect of wiping with a damp cloth is not as good.

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