CN211592015U - Warning environmental protection blackboard eraser - Google Patents

Abstract

The utility model discloses a warning environmental protection blackboard eraser, which comprises an ash collecting box with an opening at the lower part, wherein at least one ash cleaning scraper blade is arranged in the ash collecting box, the two ends of the ash cleaning scraper blade are respectively fixed on the opposite side walls of the ash collecting box, an ash collecting box cover plate is arranged at the opening of the ash collecting box, and the opening of the ash collecting box is sealed by the ash collecting box cover plate; the ash collecting box cover plate is provided with a roller brush installation through groove corresponding to each ash removal scraper, and a roller brush is arranged in the roller brush installation through groove in a rolling mode. The utility model has the advantages of reducing dust pollution to air and ensuring the health of teachers and classmates; the warning function of the prompt box is beneficial to improving the learning efficiency of students, and is convenient for teachers to maintain classroom discipline; the utility model discloses simple structure, low in production cost, healthy environmental protection, convenient to use.

Description

Warning environmental protection blackboard eraser

The technical field is as follows:

the utility model relates to a blackboard eraser especially relates to an environmental protection blackboard eraser warns.

Background art:

in the teaching process, teachers often need to write, draw and explain on a blackboard. In a common class, the chalk is erased and written for a plurality of times, chalk dust inevitably sticks to hands in class, and particle dust floating in the air also falls on hair, sleeves, faces and necks of teachers. Teachers cannot work without chalk, tens of thousands of chalks are worn out day after day, and some chalk dust is inevitably sucked from nostrils. The skin becomes dry and rough when being contacted with chalk dust for a long time, and the skin is accompanied with itching feeling, so that the human body is uncomfortable, and symptoms such as rhinitis, cough and the like can be caused by serious people, which undoubtedly brings inconvenience to the normal life of teachers; meanwhile, many teachers in daily lectures use the blackboard brush to beat the lecture table or the blackboard to attract the attention of students and achieve the purpose of maintaining classroom discipline, the sound generated by beating is not enough to warn, and damages can be brought to the lecture table, the blackboard and the blackboard brush.

The utility model has the following contents:

an object of the utility model is to provide a warning environmental protection blackboard eraser.

The purpose of the utility model is implemented by the following technical scheme: an environment-friendly warning blackboard eraser comprises a dust collection box with an opening at the lower part, wherein at least one dust cleaning scraper is arranged in the dust collection box, two ends of the dust cleaning scraper are respectively fixed on the opposite side walls of the dust collection box, a dust collection box cover plate is arranged at the opening of the dust collection box, and the opening of the dust collection box is sealed by the dust collection box cover plate; a roller brush installation through groove is formed in the ash collection box cover plate corresponding to each ash removal scraper, a roller brush is arranged in each roller brush installation through groove in a rolling mode, the axial direction of each roller brush is parallel to the ash removal scrapers, and the brush surface of each roller brush is tightly attached to the ash removal scrapers; when the blackboard is cleaned, the roller brush rotates, the dust cleaning scraper plate cleans and scrapes off the dust attached to the surface of the roller brush in the rotating process of the roller brush, the roller brush is cleaned in time, the dust-polluted air is reduced, and the health of teachers and classmates is ensured. Fixed handle and the suggestion case of being equipped with on the top surface of collection ash box, be equipped with vibration sensor, sound sensor, controller and alarm in the suggestion case, sound sensor with vibration sensor respectively with the signal input part of controller is connected, the signal output part of controller with the alarm is connected, be equipped with the transform switch on the outer wall of suggestion case, the transform switch respectively with vibration sensor with the sound sensor electricity is connected. When a teacher speaks a class, the change-over switch is adjusted to a class mode, so that the vibration sensor is electrified to work, when the teacher lightly taps the blackboard brush, the vibration sensor transmits a vibration signal to the controller, and the controller controls the alarm to output a preset short and urgent warning bell to remind students to attend the class seriously or keep quiet; the blackboard eraser is a teaching necessity and is in the morning of students, a change-over switch can be adjusted to a supervision mode in the usual self-study class and the time when a teacher is absent, so that a sound sensor is electrified to work, the sound sensor transmits a received sound signal to a controller, the controller compares the sound signal with a preset sound signal, and when the quiet environment in a classroom is broken and the sound intensity reaches a preset value, the controller controls an alarm to give an alarm ring tone to prompt students to concentrate on learning.

Furthermore, a dust removing opening is formed in the side wall of the dust collecting box, an insertion plate matched with the dust removing opening is arranged at the dust removing opening, the insertion plate is pulled out, and dust in the dust collecting box is periodically cleaned so as to ensure the cleaning effect of the dust cleaning scraper.

Preferably, 3 ash removal scrapers are arranged in the ash collection box, and the 3 ash removal scrapers are parallel to each other and distributed at equal intervals.

The utility model has the advantages that: 1. when the blackboard is erased, the roller brush rotates, and during the rotation process of the roller brush, the ash removal scraper plate cleans and scrapes off dust attached to the surface of the roller brush, so that the roller brush is cleaned in time, the dust pollution to air is reduced, and the health of teachers and classmates is ensured; 2. the warning function of the prompt box is beneficial to improving the learning efficiency of students, and is convenient for teachers to maintain classroom discipline; 3. the dust in the dust collecting box can be cleaned regularly to ensure the cleaning effect of the dust cleaning scraper; 4. the utility model discloses simple structure, low in production cost, healthy environmental protection, convenient to use.

Description of the drawings:

fig. 1 is a schematic structural view of an environment-friendly warning blackboard eraser.

Fig. 2 is a sectional view of an environment-friendly warning blackboard eraser.

The dust collecting box comprises a dust collecting box 1, a dust cleaning scraper blade 2, a dust collecting box cover plate 3, a roller brush installation through groove 4, a roller brush 5, a handle 6, a prompt box 7, a vibration sensor 8, a sound sensor 9, a controller 10, an alarm 11, a change switch 12, a dust removing opening 13 and a plugboard 14.

The specific implementation mode is as follows:

in order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 and 2, the warning environment-friendly blackboard eraser comprises an ash collection box 1 with an opening at the lower part, wherein 3 ash removal scrapers 2 are arranged in the ash collection box 1, the 3 ash removal scrapers 2 are parallel to each other and distributed at equal intervals, and two ends of each ash removal scraper 2 are respectively fixed on the opposite side walls of the ash collection box 1. The side wall of the dust collecting box 1 is provided with a dust removing opening 13, the dust removing opening 13 is provided with an insertion plate 14 matched with the dust removing opening 13, the insertion plate 14 is pulled out, and dust in the dust collecting box 1 is periodically cleaned so as to ensure the cleaning effect of the dust cleaning scraper 2. An open of the ash collecting box 1 is provided with an ash collecting box cover plate 3, and the ash collecting box cover plate 3 seals the open of the ash collecting box 1; a roller brush installation through groove 4 is formed in the ash collection box cover plate 3 corresponding to each ash removal scraper 2, a roller brush 5 is arranged in the roller brush installation through groove 4 in a rolling mode, the axial direction of the roller brush 5 is parallel to the ash removal scrapers 2, and the brush surface of the roller brush 5 is tightly attached to the ash removal scrapers 2; when the blackboard is cleaned, the roller brush 5 rotates, the roller brush 5 scrapes off the dust attached to the surface of the roller brush 5 by cleaning the ash removal scraper blade 2 in the rotating process, the roller brush 5 is cleaned in time, the dust-polluted air is reduced, and the health of teachers and classmates is ensured. Fixed handle 6 and the suggestion case 7 of being equipped with on the top surface of ash collecting box 1, be equipped with vibration sensor 8, sound sensor 9, controller 10 and alarm 11 in the suggestion case 7, sound sensor 9 is connected with the signal input part of controller 10 respectively with vibration sensor 8, and the signal output part of controller 10 is connected with alarm 11, is equipped with change over switch 12 on the outer wall of suggestion case 7, and change over switch 12 is connected with vibration sensor 8 and sound sensor 9 electricity respectively. When a teacher speaks a class, the change-over switch 12 is adjusted to a class mode, so that the vibration sensor 8 is electrified to work, when the teacher lightly taps the blackboard eraser, the vibration sensor 8 transmits a vibration signal to the controller 10, and the controller 10 controls the alarm 11 to output a preset short and urgent warning bell to remind students to attend the class seriously or keep quiet; the blackboard eraser is a teaching necessity and is in the morning of students, the change switch 12 can be adjusted to a supervision mode in the usual self-study class and the time when a teacher is absent, the sound sensor 9 is electrified to work, the sound sensor 9 transmits the received sound signal to the controller 10, the controller 10 compares the sound signal with a preset sound signal, and when the quiet environment in a classroom is broken and the sound intensity reaches a preset value, the controller 10 controls the alarm 11 to give an alarm ring tone to remind students to concentrate on learning.

The above is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (3)

1. An environment-friendly warning blackboard eraser is characterized by comprising an ash collecting box with an opening at the lower part, wherein at least one ash cleaning scraper blade is arranged in the ash collecting box, two ends of the ash cleaning scraper blade are respectively fixed on the opposite side walls of the ash collecting box, an ash collecting box cover plate is arranged at the opening of the ash collecting box, and the opening of the ash collecting box is sealed by the ash collecting box cover plate; a roller brush installation through groove is formed in the ash collection box cover plate corresponding to each ash removal scraper, a roller brush is arranged in each roller brush installation through groove in a rolling mode, the axial direction of each roller brush is parallel to the ash removal scrapers, and the brush surface of each roller brush is tightly attached to the ash removal scrapers; fixed handle and the suggestion case of being equipped with on the top surface of collection ash box, be equipped with vibration sensor, sound sensor, controller and alarm in the suggestion case, sound sensor with vibration sensor respectively with the signal input part of controller is connected, the signal output part of controller with the alarm is connected, be equipped with the transform switch on the outer wall of suggestion case, the transform switch respectively with vibration sensor with the sound sensor electricity is connected.

2. The environment-friendly warning blackboard eraser as claimed in claim 1, wherein a dust removal port is formed in a side wall of the dust collection box, and an insertion plate matched with the dust removal port is arranged at the dust removal port.

3. The warning environment-friendly blackboard eraser as claimed in claim 1 or 2, wherein 3 ash removal scrapers are arranged in the ash collection box, and the 3 ash removal scrapers are parallel to each other and distributed at equal intervals.

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