CN110816130A

CN110816130A - Electric cleaning blackboard eraser capable of adsorbing dust electrostatically

Info

Publication number: CN110816130A
Application number: CN201911141725.1A
Authority: CN
Inventors: 陈皓; 龚世超
Original assignee: Huaiyin Institute of Technology
Current assignee: Huaiyin Institute of Technology
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-02-21

Abstract

The invention relates to the technical field of teaching aids, and discloses an electric cleaning blackboard eraser capable of adsorbing dust by static electricity, which comprises a base, a shell, a storage box, a static electricity adsorption component and a cleaning adsorption roller component, wherein the shell is arranged on the base; the outer surface of the roller is wrapped with a hairbrush, and the lower surface of the hairbrush is positioned below the bottom surface of the base; the storage box is arranged in the shell and positioned between the shell and the base, and a dust inlet is formed in the position, opposite to the roller, of the bottom of the storage box; the electrostatic adsorption component is arranged in the storage box. The blackboard eraser can effectively collect dust, prevent the dust after erasing from flying, prevent environmental pollution and clean uneven blackboards.

Description

Electric cleaning blackboard eraser capable of adsorbing dust electrostatically

Technical Field

The invention relates to the technical field of teaching aids, in particular to an electric cleaning blackboard eraser capable of adsorbing dust through static electricity.

Background

In modern teaching, most of teaching involve that the chalk writes characters or the pattern is convenient for explain, for the secondary is write, need erase the writing originally, because traditional blackboard eraser is formed by rag or cotton fabric, traditional mode is erased and can be taken out and erase unclean and the phenomenon that the classroom was flown full of dust. The dust has strong adsorbability, which brings many adverse effects. This can have respiratory health effects on teachers working for a long time and students in class. Nowadays, the number of people who educate about respiratory tract infection or other diseases caused by dust entering the lung is increasing day by day. So far, the substitute of chalk is not widely popularized, and most classrooms in regions are chalk containing calcium carbide. The health of older educators is seriously threatened in the long-term education industry. The dust problem can be treated by the existing feasible method, and in order to overcome the existing problems, a method which is convenient to clean and treat dust is devised.

Disclosure of Invention

The purpose of the invention is as follows: aiming at the problems in the prior art, the invention provides an electric cleaning blackboard eraser capable of adsorbing dust by static electricity, which can effectively collect dust, prevent the dust after erasing from flying, prevent environmental pollution and clean a bumpy blackboard.

The technical scheme is as follows: the invention provides an electric cleaning blackboard eraser capable of electrostatically adsorbing dust, which comprises a base, a shell, a storage box, an electrostatic adsorption assembly and a cleaning adsorption roller assembly, wherein the shell is arranged on the base; the outer surface of the roller is wrapped with a brush, and the lower surface of the brush is positioned below the bottom surface of the base; the storage box is arranged in the shell and positioned between the shell and the base, and a dust inlet is formed in the position, facing the roller, of the bottom of the storage box; the electrostatic adsorption component is arranged in the storage box.

Furthermore, the cleaning and adsorbing roller assembly comprises at least one roller coaxially fixed on the outer wall of the conductor shaft, the roller is rotatably connected with the bottom surface of the base through the conductor shaft, one end of the conductor shaft is fixedly connected with an output shaft of the motor and is conducted with the anode of a power supply, and the cathode of the power supply is conducted with the conductor rod; a plurality of conductor filaments are fixed in the hairbrush at intervals along the circumference of the outer wall of the roller, one end of each conductor filament is in effective contact with the conductor shaft, and when the roller rotates, the other end of each conductor filament can be in effective contact with the conductor rod at a certain moment; the motor, the power supply and the conductor bar are all fixed on the base. After a main switch of a power supply is turned on, a motor is started and drives a conductor shaft to rotate, the rotation of the conductor shaft drives a roller and a brush on the outer wall of the roller to efficiently rotate, and one surface of the blackboard eraser with the brush is in contact with a blackboard, so that chalk characters written on the blackboard can be erased; when the rotation of the roller drives the conductor filament to rotate to be in contact with the conductor rod, a loop is formed among the conductor shaft, the power supply, the conductor rod and the conductor filament, an electrostatic effect is generated in the brush, the erased dust is adsorbed to the brush, and after the roller continues to rotate to drive the conductor filament to be separated from the conductor rod, the loop is disconnected, the electrostatic effect disappears, and the brush loses the adsorption force on the dust.

Preferably, the cleaning and adsorbing roller assembly comprises two rollers, the two rollers are parallel to each other, and each roller is parallel to the corresponding conductor bar.

Preferably, each of said conductor filaments is arranged perpendicular to said conductor axis.

Preferably, the spacing between the conductor axis and the conductor bar is less than the length of the conductor filament. This design ensures that the conductor filament can be in contact with the conductor bar at a certain moment during rotation.

Further, the electrostatic adsorption component comprises a positive copper sheet, a negative copper sheet, a positive and negative interface female head and a positive and negative interface male head, wherein the positive and negative interface male head is fixed on the base and communicated with the positive and negative electrodes of the power supply, the positive and negative interface female head is fixed in the storage box and communicated with the positive and negative interface male head in an inserting and inserting manner, and the positive copper sheet and the negative copper sheet are respectively communicated with the positive electrode and the negative electrode of the positive and negative interface female head through leads. In the electrostatic adsorption component in the storage box, after the male heads of the positive and negative interfaces are inserted and matched with the female heads of the positive and negative interfaces to be conducted, a circuit formed by the positive copper sheet, the negative copper sheet, the female heads of the positive and negative interfaces and the male heads of the positive and negative interfaces is conducted, the electrostatic adsorption component can continuously generate an electrostatic effect, and the electrostatic effect can adsorb dust on the brush into the storage box through the dust inlet.

Preferably, the base and the shell are detachably mounted through a buckle. Due to the detachable installation, the base and the shell are convenient to detach, and the internal structure of the blackboard eraser is convenient to maintain.

Furthermore, the shell is provided with a window for loading or taking out the storage box. The window is provided so that the storage case can be easily taken out of or put into the case.

Has the advantages that: the blackboard eraser can electrically brush off dust on the blackboard through the cleaning and adsorbing roller assembly, the dust is adsorbed on the hairbrush, and then the dust on the hairbrush is adsorbed in the storage box through the dust inlet by the electrostatic adsorption assembly in the storage box. This blackboard eraser can be directly with the dust after erasing adsorb on the brush and adsorb in the storage box, directly invert the blackboard eraser after finishing using, then the outage, the dust in the storage box loses the absorption of electrostatic absorption subassembly and can fall in the storage box, then takes out the storage box through the window of casing, it can to fall the dust.

Therefore, the blackboard eraser can effectively collect dust, prevent the dust after erasing from flying, prevent environmental pollution and protect the health of teachers and students. In addition, due to the existence of the brush on the outer surface of the roller in the cleaning and adsorbing roller assembly, the blackboard eraser can clean a hollow and uneven blackboard, and the blackboard is more effectively cleaned.

Drawings

FIG. 1 is a perspective view of an overall structure of an electrically cleaned blackboard eraser with dust adsorbed electrostatically;

FIG. 2 is a diagram showing the dispersion of electrically cleaned blackboard eraser with dust adsorbed electrostatically;

FIG. 3 is a schematic perspective view of a base;

FIG. 4 is a top view of the base;

FIG. 5 is a top view of the storage case;

FIG. 6 is a cross-sectional view of the roller;

in the figure, a base 1, a shell 2, a storage box 3, rollers 4, a hairbrush 5, a dust inlet 6, a conductor shaft 7, a motor 8, a power supply 9, a conductor rod 10, a conductor filament 11, a positive copper sheet 12, a negative copper sheet 13, a positive interface female head 14, a positive interface male head 15, a negative interface male head 15, a window 16 and a main switch 17 are used as a power supply.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

Embodiment 1:

the embodiment provides an electric cleaning blackboard eraser capable of electrostatically adsorbing dust, as shown in fig. 1, the blackboard eraser mainly comprises a base 1, a shell 2, a storage box 3, an electrostatic adsorption component and a cleaning adsorption roller component, wherein the shell 2 is detachably mounted on the base 1 through a buckle, the cleaning adsorption roller component is arranged on the base 1, the cleaning adsorption roller component comprises two rollers 4 which are coaxially fixed on the outer wall of a conductor shaft 7 and connected through a key connection or other interference fit, the two rollers 4 are respectively and rotatably connected in mounting holes in the bottom surface of the base 1 through the conductor shaft 7, one ends of the two conductor shafts 7 are respectively and fixedly connected with an output shaft of a micro motor 8 (preferably, the model is ZGB37 RG) and are respectively and communicated with the anode of a power supply 9, the cathode of the power supply 9 is communicated with the two conductor rods 10, and a main switch 17 of the power supply 9 is mounted on. The two rollers 4, the two conductor shafts 7 and the two conductor bars 10 are all parallel to each other, and the distance between each conductor shaft 7 and the corresponding conductor bar 10 is smaller than the length of the corresponding conductor filament 11; a plurality of conductor filaments 11 perpendicular to the conductor shafts 7 are fixed in the brushes 5 on the outer walls of the two rollers 4 at intervals along the circumferences of the outer walls of the rollers 4 respectively, one end of each conductor filament 11 is in effective contact with the corresponding conductor shaft 7, and when the rollers 4 rotate, the other end of each conductor filament 11 can be in effective contact with the corresponding conductor rod 10 at a certain moment; a loop is formed among the conductor shaft 7, the power supply 9, the conductor bars 10 and the conductor filaments 11, and the motor 8, the power supply 9 and the two conductor bars 10 are all fixed on the base 1.

The outer surfaces of the two rollers 4 are respectively wrapped with a brush 5, and the lower surface of the brush 6 is positioned below the bottom surface of the base 1; the storage box 3 is installed in the casing 2 and located between the casing 2 and the base 1, and a window 16 for loading or unloading the storage box 3 is opened on the casing 2. A dust inlet 6 is arranged at the bottom of the storage box 3 opposite to the roller 4; the electrostatic clamping assembly is mounted within the storage box 3. The electrostatic adsorption component comprises a positive electrode copper sheet 12, a negative electrode copper sheet 13, a positive and negative electrode interface female head 14 and a positive and negative electrode interface male head 15, the positive and negative electrode interface male head 15 is fixed on the base 1 and communicated with the positive and negative electrodes of the power supply 9, the positive and negative electrode interface female head 14 is fixed in the storage box 3 and communicated with the positive and negative electrode interface male head 15 in an inserting and inserting matching mode, the positive electrode copper sheet 12 is communicated with the positive electrode of the positive and negative electrode interface female head 14 through a lead, and the negative electrode copper sheet 13 is communicated with the negative electrode of the positive.

The operating principle of the blackboard eraser in the embodiment is as follows:

and when the main switch 17 is turned on, the two micro motors 8 are started simultaneously and drive the two conductor shafts 7 to rotate respectively, the rotation of the conductor shafts 7 drives the two corresponding rollers 4 and the hairbrushes 5 on the outer walls of the two rollers to rotate efficiently, and one surface of the blackboard eraser with the hairbrushes 5 is in contact with the blackboard, so that chalk characters written on the blackboard can be erased. When the rotation of the roller 4 rotates the conductor filament 11 into contact with the conductor bar 10, a loop is formed between the conductor shaft 7, the power supply 9, the conductor bar 10 and the conductor filament 11, an electrostatic effect is generated in the brush 5, the erased dust is adsorbed on the brush 5, when the roller 4 continues to rotate to drive the conductor filament 11 to be separated from the conductor rod 10, the above-mentioned loop is cut off, the electrostatic effect disappears, the brush 5 loses the adsorption force to the dust, at the same time, in the electrostatic adsorption component in the storage box 3, after the positive and negative interface male heads 15 are inserted, matched and conducted with the positive and negative interface female heads 14, the circuits formed by the positive copper sheet 12, the negative copper sheet 13, the positive and negative interface female heads 14 and the positive and negative interface male heads 15 are conducted, the electrostatic adsorption component can continuously generate electrostatic effect, this electrostatic effect can attract the dust on the brush 5 into the storage box 3 through the dust inlet 6. After the blackboard eraser is used, the blackboard eraser is inverted, namely the dust inlet 6 is placed upwards, then the main switch 17 of the power supply 9 is turned off, the electrostatic adsorption component is powered off, the electrostatic adsorption fails, the dust adsorbed into the storage box 3 loses adsorption and falls into the storage box 3, and then the dust in the storage box 3 is cleaned after the storage box 3 is taken out from the window 16.

The above embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The electric cleaning blackboard eraser capable of adsorbing dust electrostatically is characterized by comprising a base (1), a shell (2), a storage box (3), an electrostatic adsorption component and a cleaning adsorption roller component, wherein the shell (2) is installed on the base (1), the cleaning adsorption roller component is arranged on the base (1), a roller (4) is rotatably connected in an installation hole in the bottom surface of the base (1), and the roller (4) is arranged in parallel with the bottom surface of the base (1); the outer surface of the roller (4) is wrapped with a brush (5), and the lower surface of the brush (5) is positioned below the bottom surface of the base (1); the storage box (3) is arranged in the shell (2) and is positioned between the shell (2) and the base (1), and a dust inlet (6) is formed in the position, facing the roller (4), of the bottom of the storage box (3); the electrostatic adsorption assembly is mounted within the storage box (3).

2. The electrically-cleaned blackboard eraser capable of adsorbing dust electrostatically according to claim 1, wherein the cleaning and adsorbing roller assembly comprises at least one roller (4) coaxially fixed on the outer wall of the conductor shaft (7), the roller (4) is rotatably connected with the bottom surface of the base (1) through the conductor shaft (7), one end of the conductor shaft (7) is fixedly connected with the output shaft of the motor (8) and is conducted with the positive electrode of the power supply (9), and the negative electrode of the power supply (9) is conducted with the conductor bar (10); a plurality of conductor filaments (11) are fixed in the hairbrush (5) at intervals along the circumference of the outer wall of the roller (4), one end of each conductor filament (11) is in effective contact with the conductor shaft (7), and when the roller (4) rotates, the other end of each conductor filament (11) can be in effective contact with the conductor rod (10) at a certain moment; the motor (8), the power supply (9) and the conductor bar (10) are all fixed on the base (1).

3. The electrically cleaned blackboard eraser with electrostatic absorption of dust according to claim 2, wherein said cleaning absorption roller assembly comprises two said rollers (4), said two rollers (4) are parallel to each other, and each said roller (4) is parallel to the corresponding said conductor bar (10).

4. The electrically cleaned electrostatic dust-adsorbing blackboard eraser according to claim 4, wherein each of said conductor filaments (11) is arranged perpendicular to said conductor axis (7).

5. The electrically cleaned electrostatic dust-adsorbing blackboard eraser according to claim 5, wherein the distance between the conductor shaft (7) and the conductor rod (10) is less than the length of the conductor filament (11).

6. The electric cleaning blackboard eraser capable of electrostatically adsorbing dust according to any one of claims 1 to 6, wherein the electrostatic adsorption assembly comprises a positive electrode copper sheet (12), a negative electrode copper sheet (13), a positive and negative electrode interface female head (14), and a positive and negative electrode interface male head (15), the positive and negative electrode interface male head (14) is fixed on the base (1) and is communicated with the positive and negative electrodes of the power supply (9), the positive and negative electrode interface female head (15) is fixed in the storage box (3) and is in inserted fit conduction with the positive and negative electrode interface male head (15), and the positive electrode copper sheet (12) and the negative electrode copper sheet (13) are respectively communicated with the positive electrode and the negative electrode of the positive and negative electrode interface female head (15) through wires.

7. The electrically-cleaned electrostatic dust-adsorbing blackboard eraser as claimed in any one of claims 1 to 6, wherein the base (1) and the housing (2) are detachably mounted by means of a snap-fit.

8. The electrically-cleaned electrostatically-attracted dust blackboard eraser according to any one of claims 1 to 6, wherein the housing (2) is opened with a window (16) for loading or unloading the storage box (3).