Automatic environment-friendly blackboard eraser

Abstract

The invention relates to an automatic environment-friendly blackboard eraser. The automatic environment-friendly blackboard eraser comprises a base, a second hydraulic cylinder, a drawing tank, a first handle and a lower support rod. A cushion block is fixed to the bottom of the base. A supporting column is arranged at the upper end of the base. A first hydraulic cylinder is arranged on the supporting column. The upper end of the first hydraulic cylinder is connected with a first connecting rod. The second hydraulic cylinder is arranged at the left end of the first connecting rod. The left endof the second hydraulic cylinder is connected with a first blackboard eraser body through a second connecting rod. The bottom end of the first blackboard eraser body is fixedly provided with a dust collection plate. A first pipeline is arranged below the dust collection plate. An air pump is mounted on the first pipeline. The bottom of the first pipeline is connected with a second pipeline. The drawing tank is arranged below the second pipeline. The automatic environment-friendly blackboard eraser has the beneficial effects that the first blackboard eraser body is driven by the first hydraulic cylinder to move up and down so as to automatically erase characters up and down on a blackboard.

Description

technical field [0001] The invention relates to the technical field of environmental protection devices, in particular to an automatic environment-friendly blackboard eraser. Background technique [0002] Environmental protection (referred to as environmental protection) is the act of protecting the natural environment for the well-being of nature and human beings at the level of individuals, organizations or governments. The general term for various actions taken for sustainable development, its methods and means include engineering technology, administrative management, law, economy, publicity and education, etc. Environmental protection means that human beings consciously protect natural resources and enable them to be rationally used to prevent the natural environment from being polluted and damaged; to comprehensively manage the polluted and damaged environment to create an environment suitable for human life and work, Coordinating the relationship between man and natu...

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Problems solved by technology

[0004] The object of the present invention is to provide an automatic environment-friendly blackboard eraser, to solve the problem that the existing blackboard eraser proposed in the above-mentioned background technology has a low degree of automation, and cannot easily perform automatic erasing in the up, down, left, and right directions, resulting in erasing the blackboard. The process of cleaning is relatively complicated, which affects the efficiency of teaching, and the collection effect of the dust generated during the erasing process is too poor, which will cause the dust to affect the health of the human body, and it is difficult to clean up when it falls on the ground, and it cannot be cleaned according to the needs of use. Choosing to use a blackboard eraser is not practical enough, and the residual dust on the blackboard eraser is often difficult to fall off, which leads to a very troublesome problem for cleaning the blackboard eraser

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