CN115091880B

CN115091880B - Nanometer blackboard supporting dual-system switching

Info

Publication number: CN115091880B
Application number: CN202210808708.4A
Authority: CN
Inventors: 李广垒; 王飞; 陈祖涛
Original assignee: Anhui Baoxin Information Technology Co ltd
Current assignee: Anhui Baoxin Information Technology Co ltd
Priority date: 2022-07-11
Filing date: 2022-07-11
Publication date: 2023-09-05
Anticipated expiration: 2042-07-11
Also published as: CN115091880A

Abstract

The invention relates to the field of intelligent teaching aids, in particular to a nano blackboard supporting dual-system switching. The nano blackboard comprises a mounting seat, a nano blackboard body, a fan, a cleaning component, a temperature detector, a driving component and a controller; the front end of the mounting seat is provided with a mounting groove, the rear end of the mounting seat is provided with a heat insulation chamber, and the bottom of the mounting seat is provided with a heat dissipation chamber; the mounting groove, the heat insulation chamber and the heat dissipation chamber are communicated with each other; the nanometer blackboard main body is arranged in the mounting groove; the fan is arranged in the heat dissipation chamber; the driving components are arranged in two groups and are positioned at the upper end and the lower end of the mounting groove; the cleaning component moves back and forth in front of the nanometer blackboard body. The invention is provided with the cleaning component, on one hand, the cleaning component erases chalk marks on the nano blackboard main body, and on the other hand, the dust collection seat sucks flying dust and transfers the flying dust into the dust collection box for sedimentation. The cleaning, dust collecting and dedusting effects are good, and the maintenance is convenient. The heat insulation chamber, the heat dissipation chamber and the mounting groove are communicated, and the heat dissipation chamber is matched with a fan for air supply. The device has good air circulation, fast heat dissipation and difficult dust and sundries entering.

Description

Nanometer blackboard supporting dual-system switching

Technical Field

The invention relates to the field of intelligent teaching aids, in particular to a nano blackboard supporting dual-system switching.

Background

The nanometer blackboard is a high-tech interactive teaching product, adopts the leading nanometer touch technology in the world, can realize the seamless switching between traditional teaching blackboard and the intelligent electronic blackboard through the touch, and can also carry out synchronous superposition interaction of teaching contents when chalk is written.

The Chinese patent document with the publication number CN 214775075U discloses an intelligent nano blackboard with an automatic wiping function, which comprises a bottom plate, wherein the top surface of the bottom plate is fixedly connected with a nano blackboard, a machine box is fixedly connected with the top surface of the nano blackboard, a sliding groove is formed in the top surface of the bottom plate, the sliding groove is not in contact with the nano blackboard, a sliding block is connected with the sliding groove in a sliding manner, a telescopic rod is fixedly connected with the top surface of the sliding block, a wiping device is arranged on the right side of the nano blackboard, and a driving device is arranged in the machine box. Through wiping arrangement's setting, when cotton board thickness changed, the spring utilized reaction force to drive the connecting plate and left the removal, and then drove magnetic plate and cotton board and left the removal to make the cotton board of different thickness all can laminate more with the nanometer blackboard, through the setting of the device, can install the cotton board of different thickness, and then promoted the application scope of the device.

The nano blackboard is cleaned only by handwriting erasing, has a single function, and can fly dust in the wiping process, so that the air pollution problem is caused. When the device is used as a display screen, heat is not easy to dissipate, and the device is easy to damage. In addition, the existing nanometer blackboard mostly adopts a single system to work, and can not meet the teaching requirements of different disciplines and different software.

Disclosure of Invention

Aiming at the problems in the background technology, a nano blackboard supporting double-system switching is provided. The invention is provided with the cleaning component, on one hand, the cleaning component erases chalk marks on the nano blackboard main body, and on the other hand, the dust collection seat sucks flying dust and transfers the flying dust into the dust collection box for sedimentation. The cleaning, dust collecting and dedusting effects are good, and the maintenance is convenient. The heat insulation chamber, the heat dissipation chamber and the mounting groove are communicated, and the heat dissipation chamber is matched with a fan for air supply. The device has good air circulation and fast heat dissipation, and is not easy to enter dust and sundries.

The invention provides a nano blackboard supporting dual-system switching, which comprises a mounting seat, a nano blackboard main body, a fan, a cleaning component, a temperature detector, a driving component and a controller, wherein the mounting seat is arranged on the nano blackboard main body; the front end of the mounting seat is provided with a mounting groove, the rear end of the mounting seat is provided with a heat insulation chamber, and the bottom of the mounting seat is provided with a heat dissipation chamber; the mounting groove, the heat insulation chamber and the heat dissipation chamber are communicated with each other; the nanometer blackboard main body is arranged in the mounting groove; the fan is arranged in the heat dissipation chamber; the driving components are arranged in two groups and are positioned at the upper end and the lower end of the mounting groove; the cleaning component is driven by the driving component to move back and forth in front of the nanometer blackboard body.

The cleaning component comprises a movable frame, a mounting plate, a cleaning piece, a dust collection seat, a clamping piece, a dust collection pipe, a dust collection pump and a dust collection box; the movable frame is connected with the mounting seat in a sliding manner, and a through groove is formed in the movable frame; the mounting plate is arranged in the through groove; the cleaning piece is arranged on the mounting plate and is used for wiping the nano blackboard main body; the dust collection seat and the dust collection box are both arranged on the movable frame and are communicated through a dust collection pipe; the dust suction pump is arranged on the dust suction pipe.

The driving assembly comprises a transmission belt, a transmission roller, a moving block and a driving piece; the driving rollers driven by the driving piece are rotationally arranged at two sides of the mounting seat; the transmission belt is sleeved on the transmission roller; one end of the moving block is connected with the driving belt, and the other end is connected with the moving frame.

Preferably, the dust collection seats are arranged at the left side and the right side of the through groove, and a plurality of groups of dust collection holes are arranged on the dust collection seats at equal intervals.

Preferably, the mounting plate is provided with a mounting frame; the dust collecting box is clamped and arranged on the mounting frame, sedimentation liquid is filled in the dust collecting box, and the top end of the dust collecting box is provided with a vent hole; the vent hole is provided with a first filter screen.

Preferably, a clamping piece is fixedly arranged between the mounting plate and the through groove; the clamping piece comprises a spring and a clamping block; the two sides of the movable frame are provided with bayonets communicated with the through grooves; clamping grooves communicated with the bayonets are formed in two sides of the mounting plate; the spring is arranged in the clamping groove; one end of the clamping block extends into the clamping groove and is connected with the spring, and the other end of the clamping block is clamped with the corresponding bayonet.

Preferably, the mounting seat is provided with a guide groove; the transmission belt and the transmission roller are arranged in the guide groove; the movable block is arranged on the notch of the guide groove in a sliding way.

Preferably, the driving member includes a turbine, a scroll bar, and a motor; one end of the driving roller extends out of the guide groove, extends into the heat insulation chamber and is connected with the turbine in a bonding way; the vortex rod is driven by a motor to rotate and is meshed with the turbine.

Preferably, the mounting groove is communicated with the heat insulation chamber through a first heat radiation opening; the mounting groove is communicated with the heat dissipation chamber through a second heat dissipation opening; the heat insulation chamber and the heat dissipation chamber are communicated through a heat dissipation port III; a heat radiation port IV is arranged at the top of the heat insulation chamber; and a second filter screen is arranged on the fourth heat dissipation port.

Preferably, a plurality of groups of heat conducting fins are arranged in the heat insulation chamber; the heat conducting fin is arranged in parallel and equidistant with the first heat radiating opening, the head end faces the fourth heat radiating opening, and the tail end faces the third heat radiating opening.

Preferably, the mounting seat is provided with a touch screen control panel.

Preferably, the nano blackboard body is provided with a first system, a second system, a switching module, a communication module, an identity verification module, a control module and a database module; a teacher logs in an identity verification module through a mobile phone app or a touch screen control panel; and after verification, sending a command to the control module, executing the command by the switching module, and switching the first system and the second system.

Preferably, the mounting plate is a triangular column; the three cleaning pieces are correspondingly arranged and are respectively clamped on three outward faces of the triangular prism; an automatic turn-over mechanism is arranged between the mounting plate and the movable frame; the automatic turn-over mechanism comprises a surface changing groove and a positioning column; the surface changing groove is formed in the mounting seat and is positioned on one side of the nano blackboard main body; the positioning column is fixedly connected with two ends of the middle part and extends outwards into a ratchet groove formed in the inner end of the movable frame, and a pawl is rotationally connected with the outer end of the positioning column, which is positioned at the inner side part of the ratchet groove; the inner end of the surface changing groove is provided with a first magnet, and the mounting seat is provided with a second magnet with the same magnetism as the first magnet; the triangular part of the triangular column is provided with a magnetic block with magnetism opposite to that of the first magnet and the second magnet;

when the movable frame is close to the face changing groove with the triangular column, the triangular column is turned over under the action of the first magnet in the moving process, so that the adjacent face of the triangular column is attracted with the second magnet when the triangular column moves to the limit.

Compared with the prior art, the invention has the following beneficial technical effects:

the invention is provided with the cleaning component, and the movable frame is driven to move back and forth by the driving belt. In the moving process, on one hand, the cleaning piece erases chalk marks on the nano blackboard main body, and on the other hand, the dust collection seat sucks flying dust and transfers the flying dust into the dust collection box, and the dust is settled under the action of the settling liquid. The cleaning, dust collection and dust removal are comprehensive, thorough and good in effect. The clamping piece is arranged, the mounting plate is detached from/connected with the movable frame by pressing the clamping block, the operation is simple, the cleaning piece is convenient to clean and replace, and the cleaning effect is guaranteed. The dust collecting box is clamped and arranged on the mounting frame, so that the inside of the dust collecting box is convenient to clean, and the dust removing effect is ensured.

When the nano blackboard body is used as a display screen, heat is emitted to the heat insulation chamber and the heat dissipation chamber, and the nano blackboard body is helped to cool. And meanwhile, the temperature detector detects the working temperature of the nano blackboard, when the working temperature exceeds a set threshold value, the fan supplies air, and the air part flows out from the heat dissipation port and directly acts on the nano blackboard body. And the other part of the air flows out of the third heat dissipation port to push the air in the heat insulation chamber to flow, and finally the hot air flows out of the fourth heat dissipation port. The whole device has good air circulation and fast heat dissipation, and is not easy to enter dust and sundries.

The nano blackboard body is provided with a first system, a second system, a switching module, a communication module, an identity verification module, a control module and a database module. Through operating mobile phone app or touch screen control panel, can operate the switching module, realize the switching of first system and second system to satisfy the teaching demand of different disciplines, different software, need not to cut off the power supply and restart, easy operation is convenient, and intelligent is strong.

The invention is not only provided with the cleaning piece with one surface capable of cleaning the nano blackboard main body, but also provided with three cleaning pieces through the triangular column arrangement of the mounting plate, and the triangular column is turned over by the limit of the surface changing groove and the cooperation between magnetism when the triangular column moves into the surface changing groove at one side of the nano blackboard main body through the automatic turning mechanism, so that the adjacent surface is opposite to the nano blackboard main body, thereby cleaning the surface, having stronger cleaning force, cleaning more, and also being capable of extending through the triangular column for multi-surface cleaning, saving the trouble of frequently changing the cleaning piece and ensuring the cleaning force of the nano blackboard main body.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of one embodiment of the present invention;

FIG. 3 is a view showing an internal construction of an insulated chamber according to an embodiment of the present invention;

FIG. 4 is a schematic view of a cleaning assembly according to an embodiment of the present invention;

FIG. 5 is a schematic diagram illustrating the connection between a cleaning assembly and a driving assembly according to an embodiment of the present invention;

FIG. 6 is a schematic view illustrating the disassembly of a cleaning assembly according to an embodiment of the present invention;

FIG. 7 is an enlarged view of FIG. 4 at A;

FIG. 8 is an enlarged view at B in FIG. 5;

FIG. 9 is a partial cross-sectional view of a mounting plate in one embodiment of the invention;

FIG. 10 is a schematic view showing a communication structure of a mounting groove, a heat insulation chamber and a heat dissipation chamber according to an embodiment of the present invention;

FIG. 11 is a schematic perspective view of an automatic turn-over mechanism according to an embodiment of the present invention;

FIG. 12 is a schematic top view of the automatic turn-over mechanism of FIG. 11;

FIG. 13 is an enlarged view of FIG. 12 at C;

fig. 14 is a schematic view of a structure of the positioning post 351 in fig. 13;

fig. 15 is a schematic structural diagram of the triangular column in fig. 13 approaching the face-changing groove to the limit position.

Reference numerals: 1. a mounting base; 2. a nano blackboard body; 3. a heat dissipation chamber; 4. a first heat radiation port; 5. a fan; 6. a second heat radiation port; 7. a third heat radiation port; 8. a heat dissipation port IV; 9. a cleaning assembly; 10. a guide groove; 11. a touch screen control panel; 12. a moving rack; 13. a mounting plate; 14. a cleaning member; 15. a dust collection seat; 16. a clamping piece; 17. a dust collection pipe; 18. a dust collection pump; 19. a dust collection box; 20. a vent hole; 21. a mounting frame; 22. a transmission belt; 23. a driving roller; 24. a driving member; 25. a moving block; 26. a through groove; 27. a bayonet; 28. a turbine; 29. a scroll rod; 30. a motor; 31. a clamping groove; 32. a spring; 33. a clamping block; 34. a heat conductive sheet; 35. an automatic turn-over mechanism; 350. a face changing groove; 351. positioning columns; 352. a first magnet; 353. a second magnet; 354. a pawl; 355. a ratchet groove.

Detailed Description

Example 1

As shown in fig. 1-3, the nano blackboard supporting dual-system switching provided by the invention comprises a mounting seat 1, a nano blackboard main body 2, a fan 5, a cleaning component 9, a temperature detector, a driving component and a controller; the front end of the mounting seat 1 is provided with a mounting groove, the rear end of the mounting seat is provided with a heat insulation chamber, and the bottom of the mounting seat is provided with a heat dissipation chamber 3; the mounting groove, the heat insulation chamber and the heat dissipation chamber 3 are communicated with each other; the nanometer blackboard body 2 is arranged in the mounting groove; the fan 5 is arranged in the radiating chamber 3; the driving components are arranged in two groups and are positioned at the upper end and the lower end of the mounting groove; the cleaning component 9 is driven by the driving component to move back and forth in front of the nanometer blackboard body 2.

As shown in fig. 4 to 7, the cleaning unit 9 includes a moving frame 12, a mounting plate 13, a cleaning member 14, a suction base 15, a locking member 16, a suction pipe 17, a suction pump 18, and a dust box 19; the movable frame 12 is connected with the mounting seat 1 in a sliding manner, and a through groove 26 is formed in the movable frame 12; the mounting plate 13 is mounted in the through groove 26; the cleaning piece 14 is arranged on the mounting plate 13 and acts on the nano blackboard main body 2, and the cleaning piece 14 is a cleaning cotton sheet or a cleaning brush; the dust collection seat 15 and the dust collection box 19 are both arranged on the movable frame 12 and are communicated through a dust collection pipe 17; the suction pump 18 is provided on the suction pipe 17.

As shown in fig. 5, the driving assembly includes a driving belt 22, a driving roller 23, a moving block 25, and a driving piece 24; the driving rollers 23 driven by the driving piece 24 are rotatably arranged at two sides of the mounting seat 1; the transmission belt 22 is sleeved on the transmission roller 23; one end of the moving block 25 is connected with the driving belt 22, and the other end is connected with the moving frame 12.

The working principle of this embodiment is as follows: after writing on the nano blackboard body 2, the cleaning component 9 is started, and the movable frame 12 is driven to move back and forth through the driving belt 22. During the movement, the cleaning member 14 erases chalk marks on the nano-blackboard body 2. Meanwhile, the dust suction pump 18 works, negative pressure is formed around the dust suction seat 15, flying dust is sucked, and the flying dust is transferred into the dust collection box 19, so that the aim of cleaning is fulfilled. When the nano blackboard body 2 is used as a display screen, heat is emitted to the heat insulation chamber and the heat dissipation chamber, and the nano blackboard body 2 is helped to cool. And meanwhile, the temperature detector detects the working temperature of the air conditioner, and when the working temperature exceeds a set threshold value, the fan 5 is turned on, so that heat dissipation is accelerated.

Example two

Unlike embodiment 1, the dust suction seats 15 are provided at the left and right sides of the through groove 26, and a plurality of groups of dust suction holes are provided at equal intervals on the dust suction seats 15. By arranging the dust collection seats 15 on the left side and the right side of the through groove 26, the short-distance dust collection of the dust collection holes is realized when the cleaning piece 14 is wiped, and the dust collection effect is obvious.

Further, the mounting plate 13 is provided with a mounting frame 21; the dust collecting box 19 is arranged on the mounting frame 21 in a clamping way, sedimentation liquid is filled in the dust collecting box 19, and the top end of the dust collecting box is provided with a vent hole 20; the vent hole 20 is provided with a first filter screen. The dust suction pipe 17 extends below the liquid surface of the sedimentation liquid, so that the sucked dust can be introduced into the sedimentation liquid. The dust is settled by the settling liquid, and the gas flows out after being filtered by the vent hole 20. After a period of time, the dust box 19 is removed for cleaning. The dust collecting and removing effects are good, and meanwhile, the cleaning is convenient.

Further, a guide groove 10 is arranged on the mounting seat; the driving belt 22 and the driving roller 23 are arranged in the guide groove 10; the moving block 25 is slidably disposed on the notch of the guide groove 10.

As shown in fig. 8, the driving member 24 includes a turbine 28, a scroll bar 29, and a motor 30; one end of the driving roller 23 extends out of the guide groove 10, extends into the heat insulation chamber and is connected with the turbine 28 in a bonding way; the worm 29 is driven by a motor 30 to rotate while being engaged with the worm wheel 28. The turbine 28 and the worm 29 are engaged and driven by a motor 30 to realize the rotation of the driving roller 23. The belt 22 rotates synchronously, driving the movable frame 12 to move back and forth. The moving frame 12 moves stably and smoothly, the moving direction and the times can be adjusted, and the cleaning is more complete and comprehensive.

Example III

Unlike embodiment 1, as shown in fig. 9, the engaging piece 16 is fixed between the mounting plate 13 and the through groove 26 by the engaging piece 16; the clamping piece 16 comprises a spring 32 and a clamping block 33; bayonet 27 communicated with the through groove 26 are arranged on two sides of the movable frame 12; the two sides of the mounting plate 13 are provided with clamping grooves 31 communicated with the bayonets 27; the spring 32 is arranged in the clamping groove 31; one end of the clamping block 33 extends into the clamping groove 31, is connected with the spring 32, and the other end of the clamping block is clamped with the corresponding bayonet 27.

In this embodiment, the engaging member 16 is provided, and the mounting plate 13 is separated from the movable frame 12 by pressing the clip 33 to withdraw from the bayonet 27, so that the cleaning member 14 can be cleaned and replaced. After maintenance is completed, the fixture blocks 33 are clamped into the corresponding bayonets 27, and the mounting plate 13 and the movable frame 12 can be connected. The cleaning component 9 is convenient to install and disassemble, is convenient to clean and replace the cleaning piece 14, and ensures the stability of the cleaning effect.

Example IV

Unlike embodiment 1, as shown in fig. 2 and 9, the installation groove and the heat insulation chamber communicate through the first heat radiation port 4; the mounting groove is communicated with the radiating chamber 3 through a second radiating port 6; the heat insulation chamber is communicated with the heat dissipation chamber 3 through a heat dissipation port III 7; the top of the heat insulation chamber is provided with a heat dissipation port IV 8; and a second filter screen is arranged on the fourth heat dissipation port 8.

When the fan 5 sends air, the air part flows out from the second heat dissipation port 6 and directly acts on the nanometer blackboard main body 2. The other part flows out from the third heat dissipation port 7 to push the air in the heat insulation chamber to flow, and finally the hot air flows out from the fourth heat dissipation port 8. The whole device has good air circulation and fast heat dissipation, and is not easy to enter dust and sundries.

Further, a plurality of groups of heat conducting fins 34 are arranged in the heat insulation chamber; the heat conducting fin 34 is arranged opposite to the first radiating port 4 in parallel and equidistant, the head end faces the fourth radiating port 8, and the tail end faces the third radiating port 7. The heat conducting fin 34 transmits the heat in the mounting groove to the rear, and then the heat conducting fin is matched with the fan 5 for air supply, and the upper and lower sides are ventilated, so that the heat conducting effect is ensured, and finally the aim of accelerating cooling is achieved.

Example five

Unlike embodiment 1, a touch screen control panel 11 is provided on the mount 1.

Further, the nano blackboard main body 2 is provided with a first system, a second system, a switching module, a communication module, an identity verification module, a control module and a database module; a teacher logs in an identity verification module through a mobile phone app or a touch screen control panel 11; and after verification, sending a command to the control module, executing the command by the switching module, and switching the first system and the second system.

According to the embodiment, the switching module can be operated by operating the mobile phone app or the touch screen control panel 11, so that the switching of the first system and the second system is realized, different use requirements are met, the power-off restarting is not needed, the operation is simple and convenient, and the intelligence is strong.

Example six

Unlike embodiment 1, as shown in fig. 11-15, the mounting plate 13 is a triangular column 130, and the cleaning members 14 are correspondingly provided with three cleaning members, which are respectively clamped on three outward faces of the triangular column 130;

an automatic turn-over mechanism is arranged between the triangular column 130 and the movable frame 12;

the automatic turn-over mechanism comprises a face changing groove 350 and a positioning column 351;

the surface changing groove 350 is formed in the mounting seat 1 and is positioned on one side of the nano blackboard main body 2;

the positioning column 351 is fixedly connected with two ends of the middle part of the 130 and extends outwards into a ratchet groove 355 arranged at the inner end of the movable frame 12, and a pawl 354 is rotatably connected with the outer end of the positioning column 351 positioned at the inner side part of the ratchet groove 355;

a first magnet 352 is arranged at the inner end of the surface changing groove 350, and a second magnet 353 with the same magnetism as the first magnet 352 is arranged on the mounting seat 1; a magnet having a magnetism opposite to that of the first magnet 352 and the second magnet 353 is provided at the triangle of the triangular prism 130;

when the movable frame 12 brings the triangular column 130 close to the face changing groove 350, the triangular column 130 is turned over under the action of the first magnet 352, so that the adjacent face of the triangular column 130 attracts the second magnet 353 when the triangular column moves to the limit.

Specifically, when the triangular prism 130 moves slowly, the first magnet 352 attracts the angle of the triangular prism 130 to rotate the triangular prism 130 into the surface changing groove 350, and as the moving frame 12 moves continuously, the triangular prism 130 rotates continuously until the moving frame 12 moves to the outermost limit position in accordance with the shape limitation of the surface changing groove 350, and under the attraction of the second magnet 353, when the moving frame 12 moves reversely, the angle of the side close to the surface changing groove 350 is tilted and does not enter the surface changing groove 350, as shown in fig. 15, the suction force of the first magnet 352 can be set lower than that of the second magnet 353, so that the reverse movement is not affected by the suction force; and the ratchet grooves 355 are matched with the pawls 354, so that after one turn-over is finished, the pawls 354 just enter one ratchet groove 355 to be positioned from the other ratchet groove 355, and therefore the triangular prism 130 is prevented from rotating in the process of wiping the plane of the nano blackboard main body 2, and the plane of the triangular prism 130 is always opposite to the nano blackboard main body 2.

In fig. 14, the number of the ratchet grooves 355 is 6, when the triangular prism 130 finishes one turn-over, the ratchet grooves 355 are spaced from one another, when the ratchet 354 rotates, the ratchet 354 is pressed into the pawl grooves formed on the positioning post 351 against the elastic force, and when the ratchet 354 enters the ratchet grooves 355, the ratchet 354 is separated from the pawl grooves under the elastic force of the torsion spring, and the ratchet 354 is connected with the pawl grooves through the torsion spring, which is not repeated in the prior art.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.

Claims

1. The nano blackboard supporting double-system switching is characterized by comprising a mounting seat (1), a nano blackboard main body (2), a fan (5), a cleaning component (9), a temperature detector, a driving component and a controller; the front end of the mounting seat (1) is provided with a mounting groove, the rear end of the mounting seat is provided with a heat insulation chamber, and the bottom of the mounting seat is provided with a heat dissipation chamber (3); the mounting groove, the heat insulation chamber and the heat dissipation chamber (3) are communicated with each other; the nanometer blackboard main body (2) is arranged in the mounting groove; the fan (5) is arranged in the radiating chamber (3); the driving components are arranged in two groups and are positioned at the upper end and the lower end of the mounting groove; the cleaning component (9) is driven by the driving component to move back and forth in front of the nanometer blackboard main body (2);

the cleaning assembly (9) comprises a movable frame (12), a mounting plate (13), a cleaning piece (14), a dust collection seat (15), a dust collection pipe (17), a dust collection pump (18) and a dust collection box (19); the movable frame (12) is connected with the mounting seat (1) in a sliding way, and a through groove (26) is formed in the movable frame (12); the mounting plate (13) is arranged in the through groove (26); the cleaning piece (14) is arranged on the mounting plate (13) and is used for wiping the nano blackboard main body (2); the dust collection seat (15) and the dust collection box (19) are both arranged on the movable frame (12) and are communicated through the dust collection pipe (17); the dust suction pump (18) is arranged on the dust suction pipe (17);

the driving assembly comprises a transmission belt (22), a transmission roller (23), a moving block (25) and a driving piece (24); the driving rollers (23) driven by the driving piece (24) are rotatably arranged at two sides of the mounting seat (1); the transmission belt (22) is sleeved on the transmission roller (23); one end of the moving block (25) is connected with the driving belt (22), and the other end is connected with the moving frame (12);

the mounting plate (13) is a triangular column (130); three cleaning pieces (14) are correspondingly arranged and are respectively clamped on three outward faces of the triangular prism (130);

an automatic turn-over mechanism is arranged between the mounting plate (13) and the movable frame (12);

the automatic turn-over mechanism comprises a surface changing groove (350) and a positioning column (351);

the surface changing groove (350) is formed in the mounting seat (1) and is positioned at one side of the nanometer blackboard main body (2);

the positioning column (351) is fixedly connected with the two ends of the middle part of the movable frame (130) and extends outwards into a ratchet groove (355) formed in the inner end of the movable frame (12), and a pawl (354) is rotatably connected with the outer end of the positioning column (351) positioned at the inner side part of the ratchet groove (355);

a first magnet (352) is arranged at the inner end of the surface changing groove (350), and a second magnet (353) with the same magnetism as that of the first magnet (352) is arranged on the mounting seat (1); the triangle of the triangular column (130) is provided with a magnetic block with magnetism opposite to that of the first magnet (352) and the second magnet (353);

when the movable frame (12) brings the triangular column (130) close to the surface changing groove (350), the triangular column (130) is turned over under the action of the first magnet (352) in the moving process, so that the adjacent surface of the triangular column is attracted with the second magnet (353) when the triangular column moves to the limit.

2. The nano blackboard supporting double-system switching according to claim 1, wherein dust collection seats (15) are arranged on the left side and the right side of the through groove (26), and a plurality of groups of dust collection holes are formed in the dust collection seats (15) at equal intervals.

3. A nano-blackboard supporting dual system switching according to claim 1, characterized in that the mounting plate (13) is provided with a mounting frame (21); the dust collecting box (19) is arranged on the mounting frame (21) in a clamping way, sedimentation liquid is filled in the dust collecting box (19), and the top end of the dust collecting box is provided with a vent hole (20); the vent hole (20) is provided with a first filter screen.

4. The nano blackboard supporting dual-system switching according to claim 1, characterized in that the mounting base is provided with a guide groove (10); the transmission belt (22) and the transmission roller (23) are arranged in the guide groove (10); the moving block (25) is arranged on the notch of the guide groove (10) in a sliding way.

5. A nano-blackboard supporting dual system switching according to claim 4, characterized in that the driving member (24) includes a turbine (28), a scroll bar (29) and a motor (30); one end of the driving roller (23) extends out of the guide groove (10), extends into the heat insulation chamber and is connected with the turbine (28) in a bonding way; the worm (29) is driven by a motor (30) to rotate and simultaneously is meshed with the worm wheel (28).

6. The nano-blackboard supporting dual system switching according to claim 1, wherein the installation groove and the heat insulation chamber are communicated through a first heat radiation opening (4); the mounting groove is communicated with the radiating chamber (3) through a second radiating port (6); the heat insulation chamber is communicated with the heat dissipation chamber (3) through a heat dissipation port III (7); a heat radiation port IV (8) is arranged at the top of the heat insulation chamber; and a second filter screen is arranged on the fourth heat dissipation port (8).

7. The nano-blackboard supporting dual system switching according to claim 6, characterized in that a plurality of groups of heat conducting fins (34) are arranged in the heat insulation chamber; the heat conducting fin (34) is arranged in parallel and at equal intervals opposite to the first radiating port (4), the head end faces the fourth radiating port (8), and the tail end faces the third radiating port (7); a touch screen control panel (11) is arranged on the mounting seat (1).

8. A nano-blackboard supporting dual-system switching according to claim 7, characterized in that the nano-blackboard body (2) is provided with a first system, a second system, a switching module, a communication module, an authentication module, a control module and a database module; a teacher logs in an identity verification module through a mobile phone app or a touch screen control panel (11); and after verification, sending a command to the control module, executing the command by the switching module, and switching the first system and the second system.