CN210680232U

CN210680232U - Dustless blackboard eraser

Info

Publication number: CN210680232U
Application number: CN201921289089.2U
Authority: CN
Inventors: 韩轶凡
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-09
Filing date: 2019-08-09
Publication date: 2020-06-05
Anticipated expiration: 2029-08-09

Abstract

The utility model discloses a dustless blackboard eraser, including shell, air exhauster, receiver, pile cylinder brush, chalk dust scraper, motor, reduction gear. The utility model discloses a dust collector, including plush roller brush, receiver and air exhauster, plush roller brush is located the shell bottom, with retarder connection, the reduction gear is connected with the motor, the receiver is located between plush roller brush and the air exhauster, the suction opening has been seted up to the bottom of receiver, the suction opening top is provided with the wind gap valve block, a side and the receiver bottom inner wall connection of wind gap valve block, the top of receiver is equipped with the air outlet, air outlet department is equipped with the dust filter, the below of receiver is provided with chalk dust scraper, chalk dust scraper cooperatees with the plush roller brush for scrape down the chalk dust on the plush roller brush, the top of air exhauster is equipped with the. The dust-free blackboard eraser can absorb dust generated in the blackboard erasing process, thereby avoiding environmental pollution, preventing people who erase the blackboard from being sucked into the body and maintaining physical and mental health of teachers and students.

Description

Dustless blackboard eraser

Technical Field

The utility model relates to a blackboard eraser, concretely relates to dustless blackboard eraser.

Background

The chalk is a main tool for classroom teaching and makes a great contribution to the education cause. However, when chalk marks on a blackboard are erased by using the blackboard eraser in a classroom, dust covering the sky is dissociated in the whole classroom, and polluted air seriously harms physical and mental health of teachers and students. The problem of chalk dust must be solved, and the chalk dust is not easy to be carved.

SUMMERY OF THE UTILITY MODEL

The utility model provides a dustless blackboard eraser can effectively reduce the pollution of chalk dust to the air, maintains teachers and students' physical and mental health.

In order to achieve the above object, the utility model adopts the following technical scheme:

a dustless blackboard eraser, which comprises a shell, an exhaust fan, a storage box, a plush roller brush, a chalk dust scraper, a motor and a speed reducer, the plush roller brush, the storage box and the exhaust fan are all arranged in the shell, the plush roller brush is positioned at the bottom of the shell, the dust filter is fixedly connected with an output shaft of the speed reducer, an input shaft of the speed reducer is connected with an output shaft of the motor through a coupler, the storage box is positioned between the plush roller brush and the exhaust fan, an air suction opening is formed in the bottom of the storage box, an air opening valve plate is arranged above the air suction opening, one side edge of the air opening valve plate is connected with the inner wall of the bottom of the storage box, an air outlet is formed in the top of the storage box, a dust filter is arranged at the air outlet, a chalk dust scraper is arranged below the storage box and matched with the, the brush is used for scraping chalk dust on the plush roller brush, and an air outlet of the exhaust fan is positioned at the top of the shell.

Preferably, the dust filter comprises a layer of fine filter screen, and the fine filter screen is detachably fixed in the air outlet.

Preferably, the pile roller brush, the motor and the speed reducer are symmetrically arranged.

Preferably, the device further comprises a power supply and a power switch, wherein the power supply adopts a lithium battery and is respectively and electrically connected with the power switch, the exhaust fan and the motor.

Due to the structure, the beneficial effects of the utility model reside in that:

1. the dust-free blackboard eraser can absorb dust generated in the blackboard erasing process, thereby avoiding environmental pollution and the phenomenon that people who erase the blackboard inhale into the body, and maintaining the physical and mental health of teachers and students;

2. compared with a water-spraying blackboard eraser, the dust-free blackboard eraser has the advantages that the flexible fluff brush can absorb chalk dust more easily, and the rear micro fan can absorb not only the chalk dust scraped from the brush, but also dust in the surrounding air, so that the dust can be removed more thoroughly. Compared with an electrostatic dust removal blackboard eraser, the blackboard eraser is safer and more convenient, and has the advantages of electromechanical integration, miniaturization and thorough dust removal.

3. The dust-free blackboard eraser is efficient and thorough in dust removal, leaves no trace on a blackboard, reduces the trouble of later blackboard eraser cleaning work, and has the advantages of being efficient, safe and portable.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

Fig. 1 is a front view of a dust-free blackboard eraser of the present invention;

fig. 2 is a side view of a dust-free blackboard eraser of the present invention;

fig. 3 is a top view of a dust-free blackboard eraser of the present invention;

fig. 4 is a schematic structural view of the storage box of the present invention;

fig. 5 is a schematic view of the exhaust fan of the present invention.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 5, the present embodiment provides a dust-free blackboard eraser, which comprises a housing 1, an exhaust fan 7, a storage box 6, a plush roller brush 4, a chalk dust scraper 5, a motor 8 and a reducer 9, wherein the plush roller brush 4, the storage box 6 and the exhaust fan 7 are all arranged in the housing 1, the plush roller brush 4 is arranged at the bottom of the housing 1 and is fixedly connected with an output shaft of the reducer 9, an input shaft of the reducer 9 is connected with an output shaft of the motor 8 through a coupler, the storage box 6 is arranged between the plush roller brush 4 and the exhaust fan 7, an exhaust opening 6-2 is arranged at the bottom 6-1 of the storage box 6, a vent valve plate 6-3 is arranged above the exhaust opening 6-2, one side edge of the valve plate vent 6-3 is connected with the inner wall at the bottom of the storage box 6, an air outlet is arranged at, the below of receiver 6 is provided with chalk dust scraper 5, and chalk dust scraper 5 cooperatees with pile roller brush 4 for scrape the chalk dust on the pile roller brush 4 down, air exhauster 7 adopts miniature air exhauster, air exit 11 of air exhauster 7 is located 1 tops of shell.

Repeated experiments show that compared with a water-spraying blackboard eraser, the flexible fluff brush can absorb chalk dust more easily, and the rear micro fan can absorb not only the chalk dust scraped from the brush, but also dust in the surrounding air, so that the dust can be removed more thoroughly. Compared with the electrostatic dust removal blackboard eraser, the dust-free blackboard eraser is safer and more convenient, and has the advantages of electromechanical integration, miniaturization and thorough dust removal.

The dust filtering device 6-5 comprises a layer of fine filter screen, and the fine filter screen is detachably fixed in the air outlet and can filter dust.

The plush roller brush 4, the motor 8 and the speed reducer 9 are all arranged in two and are symmetrically arranged.

The device is characterized by further comprising a power supply 3 and a power switch 10, wherein the power supply 3 is a lithium battery with the model number of L1-10N and is electrically connected with the power switch 10, the exhaust fan 7 and the motor 8 respectively. The model of the motor is GYS201DC1-CA, the model of the speed reducer is GB37-550, the rotating speed is 50rad/s, the rated voltage is 12V, and the model of the exhaust fan is SE-A200.

When the blackboard eraser is used, the power switch 10 is turned on, the lithium battery 3 supplies power to the motor 8 and the exhaust fan 7 to enable the motor 8 and the exhaust fan 7 to rotate, the motor 8 drives the plush roller brush 4 connected with the motor through the speed reducer 9 to rotationally brush chalk dust on a lower blackboard, and meanwhile the chalk dust on the plush roller brush 4 is scraped by the chalk dust scraper 5. In the process, the exhaust fan 7 rotates to suck up the tuyere block 6-3 covering the suction opening 6-2, so that the suction opening 6-2 is opened. The chalk dust scraped from the plush roller brush 4 and the residual dust on the blackboard enter the storage box 6 through the air suction opening 6-2 and are filtered by the fine filter screen 6-5 at the top of the storage box 6. The filtered clean gas is discharged from the air outlet 11, so that the circulation of the airflow is realized.

After the chalk dust collector is used, the power switch 10 is turned off, the motor 8 and the exhaust fan 7 stop working, the air port valve plate 6-3 is simultaneously turned off, and chalk dust is left in the dust collecting box and cannot leak out. When the dust is too much, the storage box 6 can be drawn out, and the filter screen is cleaned for standby.

The dust-free blackboard eraser is efficient and thorough in dust removal, leaves no trace on a blackboard, reduces the trouble of later blackboard eraser cleaning work, and has the advantages of being efficient, safe and portable.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A dust-free blackboard eraser is characterized in that: including shell, air exhauster, receiver, pile cylinder brush, chalk dust scraper, motor, reduction gear, pile cylinder brush, receiver and air exhauster are all located in the shell, and pile cylinder brush is located the shell bottom, with the output shaft fixed connection of reduction gear, and the input shaft of reduction gear passes through the coupling joint with the output shaft of motor, and the receiver is located between pile cylinder brush and the air exhauster, and the suction opening has been seted up to the bottom of receiver, and the suction opening top is provided with the wind gap valve block, a side of wind gap valve block and the bottom inner wall connection of receiver, and the top of receiver is equipped with the air outlet, and air outlet department is equipped with the dust filter, and the below of receiver is provided with chalk dust scraper, and chalk dust scraper cooperatees with pile cylinder brush for scrape the chalk dust on the pile cylinder brush down, the air exit of air exhauster is.

2. The dust-free blackboard eraser according to claim 1, wherein: the dust filtering device comprises a layer of fine filter screen, and the fine filter screen is detachably fixed in the air outlet.

3. The dust-free blackboard eraser according to claim 1, wherein: the plush roller brush, the motor and the speed reducer are all provided with two and are symmetrically arranged.

4. The dust-free blackboard eraser according to claim 1, wherein: still include power and switch, the power adopts the lithium cell, respectively with switch, air exhauster and motor electric connection.