Dust-free blackboard eraser

Abstract

The invention discloses a dust-free blackboard eraser. The dust-free blackboard eraser comprises a box, wherein the box is used as a handle at the same time, a water tank is arranged on the left side of the box, a heating cavity is formed in the right side of the box, the lower portion of the box is connected with a blackboard eraser cavity, a transverse tube with a micro water outlet hole is installed on the left side wall in the blackboard eraser cavity, the transverse tube is communicated with the bottom of the water tank through a hose, a first bent arm is installed at the upper portion of the blackboard eraser cavity and is adjacent to the right side of the transverse tube, an erasing head extending in the transverse direction is installed at the lower end of the first bent arm, a heater is arranged in the heating cavity, a blower is arranged in the middle of the heating cavity, a plurality of rows of air guide tubes communicated with the heating cavity are formed at the position, corresponding to the heating cavity in position, of the upper portion of the blackboard eraser cavity, a second bent arm is installed on the right side of the upper portion of the blackboard eraser cavity, a square tube capable of rotating around a rotary shaft is installed at the lower end of the second bent arm, and a soft water absorption erasing layer wraps the square tube. By the adoption of the structure, the effects that chalk dust is prevented from flying around, influence on environmental sanitation is reduced, and health of teachers and students is facilitated are achieved.

Description

technical field [0001] The invention relates to a blackboard eraser, in particular to a dust-free blackboard eraser. Background technique [0002] When wiping the blackboard with a blackboard now, chalk dust flies everywhere, which not only takes time and effort, affects environmental sanitation, but also is easy to be inhaled by the human body, endangering the health of teachers and students. Contents of the invention [0003] The purpose of the present invention is to provide a dust-free blackboard eraser which saves time and effort, avoids chalk dust from flying everywhere, reduces the impact on environmental sanitation and is beneficial to the health of teachers and students. [0004] The technical solution of the present invention is a dust-free blackboard eraser, which includes a box body 1 that doubles as a handle, and is characterized in that: the left side of the box body 1 is a water tank 2, and the right side is a heating cavity 3. The bottom of the box body 1 ...

AI Technical Summary

Problems solved by technology

[0002] Now when the blackboard is wiped with a blackboard, the chalk dust is flying everywhere, which is not only time-consuming and laborious, but also affects the sanitation of the environment, and is easily inhaled by the human body, endangering the health of teachers and students

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