Electric cleaning blackboard eraser that absorbs dust with electrostatic force
Through the blackboard sanitation of electrostatically absorbing dust, the dust is absorbed by electrostatic effect and collected into the storage box, the dust is solved and environmental pollution problems are achieved, and the uneven blackboard is efficiently cleaned.
Patent Information
- Application Number
- CN201911141725.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-11-20
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2039-11-20
AI Technical Summary
Traditional blackboard wipes can easily cause dust to fly when erasing dust, causing environmental pollution and pose a threat to the health of teachers and students, and it is difficult to effectively clean uneven blackboard surfaces.
A blackboard sanitation for electric cleaning of electrostatic dust is designed, using electrostatic adsorption assembly and cleaning adsorption roller assembly. Through the cooperation of conductor shaft, motor and brush, an electrostatic effect is generated to absorb dust and collect the dust into the storage box.
Effectively prevent dust from flying, protecting the environment and health, and at the same time, it can clean the surface of the potholes and uneven blackboard, improving the cleaning effect.
Smart Images
Figure CN110816130B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of teaching tools, in particular to a blackboard eraser capable of electrically cleaning and electrostatically absorbing dust. Background Art
[0002] In modern teaching, most of the teaching involves writing words or patterns with chalk for explanation. In order to write again, the original writing needs to be erased. Since traditional blackboard erasers are made of rags or cotton fabrics, the traditional way of erasing will lead to unclean erasure and dust flying all over the classroom. Dust has strong adsorption and will bring many adverse effects. This will have a health impact on the respiratory tract of teachers who work for a long time and students in class. Nowadays, the number of educators suffering from respiratory infections or other symptoms caused by dust entering the lungs is increasing day by day. So far, substitutes for chalk have not been widely promoted, and classrooms in most areas are made of chalk with calcium carbide components. The health of older educators in their long-term education career is seriously threatened. The current feasible way is to deal with the dust problem. In order to overcome the existing problems, a method that is easy to clean and convenient to deal with dust is devised. Summary of the invention
[0003] Purpose of the invention: In view of the problems existing in the prior art, the present invention provides an electric cleaning blackboard eraser with electrostatic adsorption of dust. The blackboard eraser can effectively collect dust, prevent dust from flying after erasing, prevent environmental pollution, and can clean uneven blackboards.
[0004] Technical solution: The present invention provides an electric cleaning blackboard eraser for electrostatically adsorbing dust, comprising a base, a shell, a storage box, an electrostatic adsorption component and a cleaning adsorption roller component, wherein the shell is mounted on the base, and the cleaning adsorption roller component is arranged on the base, wherein the roller is rotatably connected to the mounting hole on the bottom surface of the base, and the roller is arranged parallel to the bottom surface of the base; the outer surface of the roller is wrapped with a brush, and the lower surface of the brush is located below the bottom surface of the base; the storage box is mounted in the shell and is located between the shell and the base, and a dust inlet is provided at the bottom of the storage box opposite to the roller; the electrostatic adsorption component is mounted in the storage box.
[0005] Furthermore, the cleaning adsorption roller assembly includes at least one roller coaxially fixed on the outer wall of the conductor shaft, the roller is rotatably connected to the bottom surface of the base through the conductor shaft, one end of the conductor shaft is fixedly connected to the output shaft of the motor and is conductively connected to the positive pole of the power supply, and the negative pole of the power supply is conductively connected to the conductor rod; a plurality of conductor filaments are fixed at intervals along the circumference of the outer wall of the roller in the brush, one end of each of the conductor filaments is effectively in contact with the conductor shaft, and when the roller rotates, the other end of each of the conductor filaments can be effectively in contact with the conductor rod at a certain moment; the motor, the power supply and the conductor rod are all fixed on the base. After turning on the main switch of the power supply, the motor starts and drives the conductor shaft to rotate. The rotation of the conductor shaft drives the roller and the brush on its outer wall to rotate efficiently. The side of the blackboard eraser with the brush is brought into contact with the blackboard, so that the chalk words written on the blackboard can be cleaned. When the rotation of the roller drives the conductor filament to rotate and contact with the conductor rod, a loop is formed between the conductor shaft, the power supply, the conductor rod and the conductor filament, and an electrostatic effect is generated in the brush, which adsorbs the erased dust onto the brush. When the roller continues to rotate to drive the conductor filament to separate from the conductor rod, the above loop is disconnected, the electrostatic effect disappears, and the brush loses its adsorption force on the dust.
[0006] Preferably, the cleaning adsorption roller assembly comprises two rollers, the two rollers are parallel to each other, and each roller is parallel to the corresponding conductor rod.
[0007] Preferably, each of the conductor filaments is arranged perpendicular to the conductor axis.
[0008] Preferably, the distance between the conductor shaft and the conductor rod is smaller than the length of the conductor filament. Such a design can ensure that the conductor filament can contact the conductor rod at a certain moment during the rotation process.
[0009] Furthermore, the electrostatic adsorption component includes a positive copper sheet, a negative copper sheet, a positive and negative electrode interface female head and a positive and negative electrode interface male head, the positive and negative electrode interface male head is fixed on the base and connected with the positive and negative electrodes of the power supply, the positive and negative electrode interface female head is fixed in the storage box and connected with the positive and negative electrode interface male head by plugging and fitting, and the positive copper sheet and the negative copper sheet are connected with the positive and negative electrodes of the positive and negative electrode interface female head respectively through wires. In the electrostatic adsorption component in the storage box, after the positive and negative electrode interface male head and the positive and negative electrode interface female head are connected by plugging and fitting, the circuit formed by the positive copper sheet, the negative copper sheet, the positive and negative electrode interface female head and the positive and negative electrode interface male head is turned on, and the electrostatic adsorption component will continue to generate an electrostatic effect, and this electrostatic effect can adsorb the dust on the brush into the storage box through the dust inlet.
[0010] Preferably, the base and the shell are detachably mounted via buckles. The detachable mounting makes it easy to disassemble the base and the shell, and is convenient for maintaining the internal structure of the blackboard eraser.
[0011] Furthermore, a window for loading or removing the storage box is provided on the housing, and the provision of the window enables the storage box to be conveniently loaded or removed from the housing.
[0012] Beneficial effect: The blackboard eraser of the present invention can remove dust on the blackboard by means of the electric brush of the cleaning adsorption roller assembly, and adsorb the dust onto the brush, and then the dust on the brush is adsorbed into the storage box through the dust inlet by the electrostatic adsorption assembly in the storage box. The blackboard eraser can directly adsorb the dust after erasure onto the brush and then adsorb it into the storage box. After use, the blackboard eraser is directly inverted, and then the power supply is disconnected. The dust in the storage box loses the adsorption of the electrostatic adsorption assembly and falls into the storage box. Then the storage box is taken out through the window of the shell, and the dust can be dumped.
[0013] It can be seen that the blackboard eraser can effectively collect dust, prevent dust from flying after erasing, prevent environmental pollution, and protect the health of teachers and students. In addition, due to the presence of the brush on the outer surface of the roller in the cleaning adsorption roller assembly, the blackboard eraser can clean the uneven blackboard, which is more effective for cleaning the blackboard. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 A three-dimensional schematic diagram of the overall structure of a blackboard eraser that electrically cleans and electrostatically absorbs dust;
[0015] Figure 2 Scattering diagram of a blackboard eraser that electrically cleans the electrostatically attracted dust;
[0016] Figure 3 is a schematic diagram of the three-dimensional structure of the base;
[0017] Figure 4 is a top view of the base;
[0018] Figure 5 is a top view of the storage box;
[0019] Figure 6 is the cross-sectional view of the roller;
[0020] In the figure, 1 is a base, 2 is a shell, 3 is a storage box, 4 is a roller, 5 is a brush, 6 is a dust inlet, 7 is a conductor shaft, 8 is a motor, 9 is a power supply, 10 is a conductor rod, 11 is a conductor filament, 14 is a positive and negative electrode interface female head, 15 is a positive and negative electrode interface male head, 16 is a window, and 17 is a main switch of the power supply. DETAILED DESCRIPTION
[0021] The present invention is described in detail below in conjunction with the accompanying drawings.
[0022] Implementation 1:
[0023] This embodiment provides a blackboard eraser that electrically cleans and electrostatically absorbs dust, such as Figure 1 As shown, it is mainly composed of a base 1, a shell 2, a storage box 3, an electrostatic adsorption component and a cleaning adsorption roller component. The shell 2 is detachably mounted on the base 1 by a snap buckle. The cleaning adsorption roller component is arranged on the base 1. The cleaning adsorption roller component includes two rollers 4 coaxially fixed on the outer wall of the conductor shaft 7 by a key connection or other interference fit connection. The two rollers 4 are rotatably connected to the mounting holes on the bottom surface of the base 1 through a conductor shaft 7 respectively. One end of the two conductor shafts 7 is fixedly connected to the output shaft of a motor 8 (preferably model ZGB37RG) and is connected to the positive pole of the power supply 9. The negative pole of the power supply 9 is connected to the two conductor rods 10. The main switch 17 of the power supply 9 is installed on one side of the shell 2. The two rollers 4, the two conductor shafts 7 and the two conductor rods 10 are all parallel to each other, and the spacing between the conductor shaft 7 and the corresponding conductor rod 10 is smaller than the length of the corresponding conductor filament 11; a plurality of conductor filaments 11 perpendicular to the conductor shaft 7 are fixed in the brushes 5 on the outer walls of the two rollers 4 at intervals along the circumference of the outer wall of the roller 4, and one end of each conductor filament 11 is effectively in contact with the corresponding conductor shaft 7, and when the roller 4 rotates, the other end of each conductor filament 11 can be effectively in contact with the corresponding conductor rod 10 at a certain moment; a loop is formed between the conductor shaft 7, the power supply 9, the conductor rod 10 and the conductor filament 11, and the motor 8, the power supply 9 and the two conductor rods 10 are all fixed on the base 1.
[0024] The outer surfaces of the two rollers 4 are wrapped with brushes 5, and the lower surface of the brushes 5 is located below the bottom surface of the base 1; the storage box 3 is installed in the shell 2 and is located between the shell 2 and the base 1, and the shell 2 is provided with a window 16 for loading or removing the storage box 3. A dust inlet 6 is provided at the bottom of the storage box 3 opposite to the roller 4; the electrostatic adsorption component is installed in the storage box 3. The electrostatic adsorption component includes a positive copper sheet, a negative copper sheet, 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 connected to 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 is inserted and matched with the positive and negative electrode interface male head 15 for conduction, the positive copper sheet is connected to the positive electrode of the positive and negative electrode interface female head 14 through a wire, and the negative copper sheet is connected to the negative electrode of the positive and negative electrode interface female head 14 through a wire.
[0025] The working principle of the blackboard eraser in this embodiment is as follows:
[0026] Turn on the main switch 17, the two motors 8 start at the same time and drive the two conductor shafts 7 to rotate respectively. The rotation of the conductor shaft 7 drives the corresponding two rollers 4 and the brushes 5 on the outer wall to rotate efficiently. The side of the blackboard eraser with the brush 5 is in contact with the blackboard to clean the chalk words written on the blackboard. When the rotation of the roller 4 drives the conductor filament 11 to rotate until it contacts the conductor rod 10, a loop is formed between the conductor shaft 7, the power supply 9, the conductor rod 10 and the conductor filament 11, generating an electrostatic effect in the brush 5, and adsorbing the wiped dust onto the brush 5. When the roller 4 continues to rotate to drive the conductor filament 11 to separate from the conductor rod 10, the above loop is disconnected, the electrostatic effect disappears, and the brush 5 loses its adsorption force on the dust. At the same time, in the electrostatic adsorption component in the storage box 3, after the positive and negative electrode interface male head 15 is inserted and matched with the positive and negative electrode interface female head 14, the circuit formed by the positive copper sheet, the negative copper sheet, the positive and negative electrode interface female head 14, and the positive and negative electrode interface male head 15 is turned on, and the electrostatic adsorption component will continue to generate an electrostatic effect. This electrostatic effect can adsorb the dust on the brush 5 into the storage box 3 through the dust inlet 6. After the use of the blackboard eraser is finished, the blackboard eraser is turned upside down, that is, the dust inlet 6 is placed upward, and then the main switch 17 of the power supply 9 is turned off, the electrostatic adsorption component is powered off, the electrostatic adsorption fails, and the dust adsorbed into the storage box 3 loses adsorption and falls into the storage box 3. Then, after taking out the storage box 3 from the window 16, the dust therein can be cleaned.
[0027] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent transformation or modification made according to the spirit of the present invention should be included in the protection scope of the present invention.
Claims
1. A blackboard eraser for electrically cleaning and electrostatically absorbing dust, characterized in that: The invention 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 mounted on the base (1), the cleaning adsorption roller component is arranged on the base (1), the roller (4) therein is rotatably connected to a mounting hole on the bottom surface of the base (1), and the roller (4) is arranged parallel to 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 located below the bottom surface of the base (1); the storage box (3) is mounted in the shell (2) and is located between the shell (2) and the base (1), and a dust inlet (6) is provided at a position of the bottom of the storage box (3) facing the roller (4); the electrostatic adsorption component is mounted in the storage box (3); The cleaning adsorption roller assembly comprises at least one roller (4) coaxially fixed to the outer wall of a conductor shaft (7); the roller (4) is rotatably connected to the bottom surface of the base (1) via the conductor shaft (7); one end of the conductor shaft (7) is fixedly connected to the output shaft of the motor (8) and is conductively connected to the positive pole of the power supply (9); the negative pole of the power supply (9) is conductively connected to the conductor rod (10); a plurality of conductor filaments (11) are fixedly arranged in the brush (5) 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.
2. The electric cleaning and electrostatic dust absorption blackboard eraser according to claim 1 is characterized in that: The motor (8), the power source (9) and the conductor rod (10) are all fixed on the base (1).
3. The electric cleaning and electrostatic dust absorption blackboard eraser according to claim 1 is characterized in that: The cleaning adsorption roller assembly comprises two rollers (4), the two rollers (4) are parallel to each other, and each roller (4) and the corresponding conductor rod (10) are parallel to each other.
4. The electric cleaning and electrostatic dust absorption blackboard eraser according to claim 1 is characterized in that: Each of the conductor filaments (11) is arranged perpendicular to the conductor axis (7).
5. The electric cleaning and electrostatic dust absorption blackboard eraser according to claim 1, characterized in that: The distance between the conductor axis (7) and the conductor rod (10) is smaller than the length of the conductor filament (11).
6. The blackboard eraser for electrically cleaning and electrostatically absorbing dust according to any one of claims 1 to 5, characterized in that: The electrostatic adsorption component comprises a positive copper sheet, a negative copper sheet, 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 is connected to the positive and negative electrodes of the power source (9); the positive and negative electrode interface female head (14) is fixed in the storage box (3) and is plugged and matched with the positive and negative electrode interface male head (15) to be connected; the positive copper sheet and the negative copper sheet are respectively connected to the positive electrode and the negative electrode of the positive and negative electrode interface female head (14) through wires.
7. The blackboard eraser for electrically cleaning and electrostatically absorbing dust according to any one of claims 1 to 5, characterized in that: The base (1) and the shell (2) can be detachably mounted via buckles.
8. The blackboard eraser for electrically cleaning and electrostatically absorbing dust according to any one of claims 1 to 5, characterized in that: The housing (2) is provided with a window (16) for loading or removing the storage box (3).