A dust-free teaching demonstration device for teaching

Abstract

The present invention discloses a dust-free teaching demonstration device for teaching, comprising a blackboard, a horizontally movable lead screw module and a concave cleaning support block, wherein the horizontally movable lead screw module is respectively mounted on the upper and lower ends of the blackboard, the concave cleaning support block is mounted on the movable end of the horizontally movable lead screw module, an adsorption cleaning structure and a collection structure are mounted on the concave cleaning support block, and a cleaning water washing structure is mounted on the blackboard; the present invention achieves automatic cleaning of the cleaning device through the coordination of the adsorption cleaning structure and the cleaning water washing structure, thereby avoiding the need for manual replacement and cleaning of the cleaning device after operation; the whole device drains part of the dust to the inner side of the concave cleaning box, mixes the dust with liquid, thereby avoiding dust splashing; at the same time, the cleaning device is retracted and extended through the adsorption cleaning structure, and the blackboard is cleaned according to different needs; at the same time, the effects of drainage, adsorption and cleaning are achieved by squeezing equipment such as sponges.

Description

Technical Field

[0001] The invention relates to the technical field of teaching demonstration, in particular to a dust-free teaching demonstration device for teaching. Background Art

[0002] A blackboard does not specifically refer to a black board. In the traditional sense, it is a flat surface that can be written on repeatedly. The board is hard and is mostly used for teaching. It is mostly black, dark green, or white. Before the invention of writing, people discovered that charcoal could be used for painting. Some ancient murals can be found in some ancient caves in Europe. The rock walls with these murals can be called blackboards in the traditional sense.

[0003] However, the existing multifunctional teaching blackboard is easy to generate dust when people write on it, so that the dust enters people's respiratory tract, and a large amount of dust is generated when people wipe the blackboard after use. The blackboard eraser cannot collect the dust, so that the dust harms people's respiratory health, which brings many problems to people's use of the blackboard. For example, "CN210911815U A dust-free blackboard for classroom teaching" describes that "the blackboard does not specifically refer to the black board surface. In the traditional sense, it is a plane that can be repeatedly written with chalk. The board surface is hard and is mostly used for teaching. The blackboard is generally made of wood or frosted glass, and can be written on with specific writing materials such as chalk. The blackboard has brought great convenience to teachers in modern classroom teaching, and it is also convenient for students to recognize and understand knowledge.

[0004] However, when wiping chalk writings on the existing classroom teaching blackboard, the wiped chalk writings will generate a large amount of dust. Due to the lack of dust removal and protection measures, the dust is easy to float around, which is easy to interfere with and affect the teacher's eyes, and is also easy to pollute the classroom teaching environment, thereby reducing the teaching efficiency of classroom teaching. The combination of electrostatic dust removal and activated carbon adsorption dust removal can achieve a dual comprehensive dust removal treatment for the dust wiped on the blackboard, and cooperate with the overall protection treatment of the protective cover to effectively avoid the leakage of dust, thereby preventing the dust from floating around and polluting the classroom teaching environment. However, manual cleaning is still required during the cleaning process after operation. In view of this, in-depth research on the above-mentioned problems resulted in this case. Summary of the invention

[0005] The technical solution of the present invention for achieving the above-mentioned purpose is: a dust-free teaching demonstration device for teaching, comprising: a blackboard, a pair of horizontal moving screw modules and a concave cleaning support block, wherein the pair of horizontal moving screw modules are respectively installed on the upper and lower ends of the blackboard, the concave cleaning support block is installed on the moving ends of the pair of horizontal moving screw modules, the concave cleaning support block is installed with an adsorption cleaning structure and a collection structure, and the blackboard is installed with a cleaning water washing structure;

[0006] The adsorption cleaning structure comprises: a lifting support block, a rotating cleaning shaft, a rotating cleaning cylindrical brush, a rotating cleaning motor, a concave telescopic block, a convex telescopic block, two pairs of horizontal telescopic fine-tuning shafts, two pairs of horizontal telescopic fine-tuning set springs, a horizontal circular telescopic electromagnet, a horizontal circular telescopic magnet, a cleaning sponge, a cleaning air pressure circular airbag, an inflatable squeezing pump and a lifting and lowering adjustment component;

[0007] The lifting support block is provided with an arc groove, the rotating cleaning shaft is inserted into the inner side of the arc groove through a bearing, the rotating cleaning cylindrical brush is installed on the rotating cleaning shaft, the lifting support block is provided with a rotating cleaning drive groove, the rotating cleaning motor is installed on the inner side of the rotating cleaning drive groove, and the driving end of the rotating cleaning motor is connected to the rotating cleaning shaft, the convex telescopic block is movably inserted into the inner side of the concave telescopic block, the lifting support block is installed on the convex telescopic block, two pairs of the horizontal telescopic fine-tuning shafts are inserted into the concave telescopic block in parallel, and the two pairs of the horizontal telescopic fine-tuning shafts are evenly inserted into the convex telescopic block. The horizontal back-shaped telescopic electromagnet is installed on the concave telescopic block, the horizontal back-shaped telescopic magnet is installed on the convex telescopic block, the two pairs of horizontal telescopic fine-tuning sleeve springs are respectively sleeved on the two pairs of horizontal telescopic fine-tuning shafts, the lifting support block is provided with a sponge groove, the sponge groove is provided with a back-shaped expansion groove, the cleaning sponge is installed on the inner side of the sponge groove, the cleaning air pressure back-shaped airbag is installed on the inner side of the back-shaped expansion groove, the inflation squeeze pump is inserted on the inner side of the lifting support block, and the inflation squeeze pump is connected to the cleaning air pressure back-shaped airbag, and the concave telescopic block is installed on the concave cleaning support block through the lifting adjustment component;

[0008] It should be noted that, in the above, a pair of horizontally movable lead screw modules are operated to drive the concave cleaning support blocks on the moving ends of the pair of horizontally movable lead screw modules, so that the concave cleaning support blocks are moved along the moving ends of the pair of horizontally movable lead screw modules, and the horizontal circular telescopic electromagnet inside the concave telescopic block is energized, and the different magnetic poles and magnetism generated by the horizontal circular telescopic electromagnet magnetically adsorb or repel the horizontal circular telescopic magnet on the convex telescopic block, so that the convex telescopic block is extended and retracted along the inside of the concave telescopic block, and the lifting support plate on it is driven by the convex telescopic block, so that the rotating cleaning shaft on the lifting support plate and the rotating cleaning cylindrical brush thereon are squeezed against the blackboard, At the same time, the rotary cleaning motor is operated to drive the rotary cleaning shaft on the driving end of the rotary cleaning motor to rotate, and the rotary cleaning cylindrical brush on it is driven by the rotary cleaning shaft to rotate and clean the sponge. At the same time, a pair of horizontally movable screw modules are operated to horizontally telescope and reversely rotate along the blackboard for cleaning, thereby achieving electrostatic adsorption of some dust in the air. At the same time, the air on both sides of the rotary cleaning is adsorbed and filtered through the collection structure, and the lifting support plate drives the cleaning sponge on it to wet and clean the blackboard through the cleaning sponge. Then, the concave telescopic block on it is driven by the lifting and adjusting component, so that the equipment on the concave telescopic block is inserted into the inner side of the concave cleaning box.

[0009] Preferably, the lifting adjustment assembly comprises: a plurality of lifting adjustment shafts, a circular lifting adjustment block, a plurality of lifting linear bearings, a pair of horizontal telescopic locking support convex blocks, a plurality of horizontal telescopic locking shafts, a plurality of horizontal telescopic support wheels, a pair of horizontal telescopic locking electromagnets, a pair of horizontal telescopic locking magnets and a pair of small lifting winches;

[0010] The concave cleaning support block is provided with a lifting hole and a pair of lifting concave grooves, and several lifting adjustment shafts are movably inserted into the inner sides of the pair of lifting concave grooves, the circular lifting adjustment block is installed on the concave telescopic block, several lifting linear bearings are evenly inserted into the circular lifting adjustment block, and several lifting linear bearings are movably sleeved on several lifting adjustment shafts, a pair of lifting concave grooves are respectively provided with convex telescopic locking support grooves, a pair of horizontal telescopic locking support convex blocks are movably inserted into the inner sides of a pair of convex telescopic locking support grooves, and several horizontal telescopic locking shafts are movably inserted into a pair of convex telescopic locking The inner side of the support groove, and several of the horizontal telescopic locking shafts are movably inserted on a pair of the horizontal telescopic locking support convex blocks, a pair of the horizontal telescopic locking support convex blocks are provided with several support rotation openings, several of the horizontal telescopic support wheels are respectively inserted on the several support rotation openings through bearings, a pair of the horizontal telescopic locking electromagnets are respectively installed on the inner side of a pair of the convex telescopic locking support grooves, a pair of the horizontal telescopic locking magnets are respectively installed on a pair of the horizontal telescopic locking support convex blocks, a pair of the small lifting winches are respectively installed on the inner side of a pair of the lifting concave grooves, and a pair of the small lifting winches are connected to the circular lifting adjustment block;

[0011] It should be noted that, in the above, a pair of horizontal telescopic locking electromagnets are energized so that the pair of horizontal telescopic locking electromagnets generate magnetism, and the magnetism of the horizontal telescopic locking electromagnets is changed by changing the direction of the current on the horizontal telescopic locking electromagnets, and the horizontal telescopic locking magnets are adsorbed or repelled by different magnetism, and the horizontal telescopic locking support convex blocks on them are respectively driven by a pair of horizontal telescopic locking magnets, and the horizontal telescopic locking support convex blocks are inserted into the inner side of the circular lifting adjustment block, so that the circular lifting adjustment block is fixed on the top of the inner side of the lifting hole, and at the same time, the circular lifting adjustment block is lifted and limited by a number of lifting adjustment shafts, and the circular lifting adjustment block is stably lifted and lowered on a number of lifting adjustment shafts by lifting linear bearings, and at the same time, a pair of horizontal telescopic locking support convex blocks are horizontally supported and telescopically limited by a number of horizontal telescopic locking shafts, and the lifting of the circular lifting adjustment block drives the concave telescopic block on it to insert the cleaning parts into the inner side of the cleaning water washing structure, thereby achieving automatic insertion into the inner side of the cleaning water washing structure.

[0012] Preferably, the collection structure comprises: a pair of toothed collection pipes, a diversion drainage pipe, an air pump, a filter collection box, a filter screen, filter carbon, an electrostatic emitter and a telescopic drainage assembly;

[0013] A pair of the toothed collecting tubes are inserted on both horizontal sides of the concave cleaning support block, the shunt drainage tube is connected to the pair of the toothed collecting tubes, the filter collecting box is installed on the concave cleaning support block, and the filter collecting box is connected to the shunt drainage tube, the vacuum pump is installed on the filter collecting box, the filter net is evenly installed on the inner side of the filter collecting box, the filter carbon is placed on the inner side of the filter collecting box, the electrostatic emitter is installed on the filter net, and the telescopic drainage assembly is installed on the pair of the toothed collecting tubes;

[0014] It should be noted that, in the above, the air inside the filter collection box is pumped out by a vacuum pump, so that negative pressure is generated inside the filter collection box, and the air inside the diversion drainage tube and a pair of toothed collection tubes is drained to the inside of the filter collection box through the negative pressure. Similarly, the air around the blackboard wrapped by the concave cleaning support block is drained to the inside of the filter collection box through a pair of toothed collection tubes, and at the same time, the dust in the gas is filtered through the cooperation of the electrostatic filter and filter carbon, and the distance between the adsorption range and the blackboard is adjusted by the telescopic drainage assembly.

[0015] Preferably, the telescopic drainage assembly comprises: a plurality of convex telescopic drainage tubes, a plurality of extended telescopic limit shafts, a plurality of extended telescopic sleeve springs, a plurality of extended circular ring magnets and two pairs of extended electromagnets;

[0016] A plurality of the convex telescopic drainage tubes are respectively movably inserted into the inner side of a pair of the toothed collecting tubes, a plurality of the extended telescopic limiting shafts are respectively movably inserted into the inner side of a pair of the toothed collecting tubes, and a plurality of the extended telescopic limiting shafts are respectively movably inserted into a plurality of the convex telescopic drainage tubes, a plurality of the extended telescopic sleeve springs are respectively sleeved onto a plurality of the extended telescopic limiting shafts, a plurality of the extended circular ring magnets are respectively mounted on a plurality of the convex telescopic drainage tubes, and two pairs of the extended electromagnets are respectively mounted on a pair of convex collecting tubes;

[0017] It should be noted that, in the above, power is supplied to two pairs of expansion electromagnets, and a plurality of expansion ring magnets are magnetically repelled by the two pairs of expansion electromagnets, and the convex telescopic drainage tubes thereon are driven by the expansion ring magnets, so that the plurality of convex telescopic drainage tubes are magnetically expanded and retracted along the inner sides of a pair of toothed collecting tubes, and the convex telescopic drainage tubes are expanded, retracted and limited by a plurality of expansion and retractable limit shafts, and the convex telescopic drainage tubes on the plurality of expansion and retractable limit shafts are controlled to be retracted and limited by a plurality of expansion and retractable set springs.

[0018] Preferably, the cleaning water washing structure comprises: a concave cleaning box, a discharge valve, a pair of extrusion drainage convex blocks, a toothed relative telescopic block, a plurality of horizontal extrusion wheels, a plurality of horizontal drainage limit telescopic shafts, a pair of extrusion cleaning electromagnets, a pair of extrusion cleaning magnets and a plurality of extrusion drainage set springs;

[0019] The concave cleaning box is installed at the bottom end of the side wall of the blackboard, the discharge valve is installed on the bottom end of the side wall of the concave cleaning box, a convex extrusion drainage groove is opened on the inner side of the concave cleaning box, a pair of extrusion drainage convex blocks are movably inserted in the inner side of a pair of convex extrusion drainage grooves, a number of horizontal drainage limit telescopic shafts are respectively inserted in the inner side of a pair of convex extrusion drainage grooves, and a number of horizontal drainage limit telescopic shafts are respectively movably inserted on a pair of extrusion drainage convex blocks, a number of extrusion drainage sleeve springs are respectively sleeved on a number of horizontal drainage limit telescopic shafts, the toothed relative telescopic block is installed on the extrusion drainage convex block, a number of horizontal extrusion wheels are installed on the toothed relative telescopic block, a pair of extrusion cleaning magnets are respectively installed on a pair of extrusion drainage convex blocks, and a pair of extrusion cleaning electromagnets are respectively installed on the inner side of a pair of convex extrusion drainage grooves;

[0020] It should be noted that, in the above, the concave telescopic block is movably inserted into the inner side of the concave cleaning box, a pair of extrusion cleaning electromagnets are energized, and the pair of extrusion cleaning electromagnets magnetically repel the pair of extrusion cleaning magnets respectively, and the pair of extrusion cleaning magnets respectively drive the extrusion drainage convex blocks thereon, and the cleaning parts on the concave telescopic block and the lifting support plate are squeezed by the extrusion drainage convex block and the extrusion drainage convex block, and at the same time, the equipment is squeezed and cleaned by a number of horizontal extrusion wheels on the gear-mounted relative telescopic block, and is immersed and cleaned by the liquid inside the concave cleaning box.

[0021] Preferably, a scraper is provided on the telescopic block relative to the toothed assembly.

[0022] Preferably, an infrared locator is provided on the concave cleaning support block.

[0023] Preferably, current regulators are provided on the two pairs of the expansion electromagnets, the horizontally-retractable electromagnets and the extrusion cleaning electromagnets.

[0024] Preferably, a scanning camera is provided on the concave cleaning support block.

[0025] Preferably, a plurality of air-drying fans are provided on the concave cleaning support block.

[0026] The dust-free teaching demonstration device for teaching made by utilizing the technical solution of the present invention achieves automatic cleaning of the cleaning equipment through the cooperation of the adsorption cleaning structure and the cleaning water washing structure, thereby avoiding the need for manual replacement and cleaning of the cleaning equipment after operation. The entire device drains part of the dust to the inner side of the concave cleaning box, mixes the dust with liquid, and avoids dust splashing. At the same time, the cleaning equipment is retracted and extended through the adsorption cleaning structure to clean the blackboard according to different needs. At the same time, the effects of drainage, adsorption and cleaning are achieved by squeezing equipment such as sponges. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the main structure of a dust-free teaching demonstration device for teaching described in the present invention.

[0028] Figure 2 The present invention is a schematic diagram of the side structure of a dust-free teaching demonstration device for teaching.

[0029] Figure 3 This is a schematic diagram of the rear structural view of a dust-free teaching demonstration device for teaching according to the present invention.

[0030] Figure 4 The present invention is a schematic side cross-sectional view of a dust-free teaching demonstration device for teaching.

[0031] Figure 5 This is a schematic diagram of the cleaning water washing structure of a dust-free teaching demonstration device for teaching described in the present invention.

[0032] Figure 6 for Figure 1 A partial enlarged view of "A".

[0033] Figure 7 for Figure 1 A partial enlarged view of "B".

[0034] Figure 8 for Figure 4 A partial enlarged view of "C" in the figure.

[0035] Fig. 9 for Figure 5 A partial enlarged view of "D"

[0036] In the figure: 1, blackboard; 2, horizontal moving screw module; 3, concave cleaning support block; 4, lifting support block; 5, rotating cleaning shaft; 6, rotating cleaning cylindrical brush; 7, rotating cleaning motor; 8, extrusion drainage set spring; 9, concave telescopic block; 10, convex telescopic block; 11, horizontal telescopic fine-tuning shaft; 12, horizontal telescopic fine-tuning set spring; 13, horizontal circular telescopic electromagnet; 14, horizontal circular telescopic magnet; 15, cleaning sponge; 16, cleaning air pressure circular airbag; 17, inflatable squeezing pump; 18, lifting adjustment shaft; 19, circular lifting adjustment block; 20, lifting linear bearing; 21, horizontal telescopic locking support convex block; 22, horizontal telescopic locking shaft; 23, horizontal extension 1. retractable support wheel; 24. horizontal telescopic locking electromagnet; 25. horizontal telescopic locking magnet; 26. small lifting winch; 27. toothed collection pipe; 28. diversion drainage pipe; 29. ​​vacuum pump; 30. filter collection box; 31. filter screen; 32. filter carbon; 33. electrostatic emitter; 34. convex telescopic drainage pipe; 35. extended telescopic limit shaft; 36. extended telescopic set spring; 37. extended ring magnet; 38. extended electromagnet; 39. concave cleaning box; 40. discharge valve; 41. extrusion drainage convex block; 42. toothed relative telescopic block; 44. horizontal extrusion wheel; 44. horizontal drainage limit telescopic shaft; 45. extrusion cleaning electromagnet; 46. extrusion cleaning magnet. DETAILED DESCRIPTION

[0037] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and a suitable controller should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and does not explain the electrical control.

[0038] Example

[0039] The present invention will be described in detail below in conjunction with the accompanying drawings. Figure 1-9As shown, a pair of horizontal movable screw modules 2 are respectively installed on the upper and lower ends of the blackboard 1, the concave cleaning support block 3 is installed on the movable end of a pair of horizontal movable screw modules 2, the concave cleaning support block 3 is installed with an adsorption cleaning structure and a collection structure, and the blackboard 1 is installed with a cleaning water washing structure; the adsorption cleaning structure includes: a lifting support block 4, a rotating cleaning shaft 5, a rotating cleaning cylindrical brush 6, a rotating cleaning motor 7, a concave telescopic block 9, a convex telescopic block 10, two pairs of horizontal telescopic fine-tuning shafts 11, two pairs of horizontal telescopic fine-tuning set springs 12, a horizontal circular telescopic electromagnet 13, a horizontal circular telescopic magnet 14, a cleaning A cleaning sponge 15, a cleaning air pressure circular airbag 16, an inflatable squeeze pump 17 and a lifting and adjusting component; an arc groove is provided on the lifting support block 4, the rotating cleaning shaft 5 is inserted into the inner side of the arc groove through a bearing, the rotating cleaning cylindrical brush 6 is installed on the rotating cleaning shaft 5, a rotating cleaning drive groove is provided on the lifting support block 4, the rotating cleaning motor 7 is installed on the inner side of the rotating cleaning drive groove, and the driving end of the rotating cleaning motor 7 is connected to the rotating cleaning shaft 5, the convex telescopic block 10 is movably inserted into the inner side of the concave telescopic block 9, the lifting support block 4 is installed on the convex telescopic block 10, and two pairs of The horizontal telescopic fine-tuning shafts 11 are inserted in pairs in parallel on the concave telescopic block 9, and the two pairs of the horizontal telescopic fine-tuning shafts 11 are evenly inserted on the convex telescopic block 10, the horizontal back-shaped telescopic electromagnet 13 is installed on the concave telescopic block 9, the horizontal back-shaped telescopic magnet 14 is installed on the convex telescopic block 10, the two pairs of horizontal telescopic fine-tuning sleeve springs 12 are respectively sleeved on the two pairs of horizontal telescopic fine-tuning shafts 11, the lifting support block 4 is provided with a sponge groove, the sponge groove is provided with a back-shaped expansion groove, the cleaning sponge 15 is installed on the inner side of the sponge groove, and the cleaning air pressure back-shaped airbag 16 is installed on the back-shaped On the inner side of the expansion tank, the inflatable squeeze pump 17 is inserted into the inner side of the lifting support block 4, and the inflatable squeeze pump 17 is connected to the clean air pressure circular airbag 16, and the concave telescopic block 9 is installed on the concave cleaning support block 3 through the lifting adjustment component; the lifting adjustment component includes: a plurality of lifting adjustment shafts 18, a circular lifting adjustment block 19, a plurality of lifting linear bearings 20, a pair of horizontal telescopic locking support convex blocks 21, a plurality of horizontal telescopic locking shafts 22, a plurality of horizontal telescopic support wheels 23, a pair of horizontal telescopic locking electromagnets 24, a pair of horizontal telescopic locking magnets 25 and a pair of small lifting winches 26;The concave cleaning support block 3 is provided with a lifting hole and a pair of lifting concave grooves, and a plurality of lifting adjustment shafts 18 are respectively movably inserted into the inner sides of the pair of lifting concave grooves, the circular lifting adjustment block 19 is installed on the concave telescopic block 9, a plurality of lifting linear bearings 20 are respectively and evenly inserted into the circular lifting adjustment block 19, and a plurality of lifting linear bearings 20 are respectively and movably sleeved on a plurality of lifting adjustment shafts 18, a pair of the lifting concave grooves are respectively provided with convex telescopic locking support grooves, and a pair of the horizontal telescopic locking support convex blocks 21 are movably inserted into the inner sides of the pair of convex telescopic locking support grooves. On the side, several of the horizontal telescopic locking shafts 22 are respectively movably inserted into the inner sides of a pair of the convex telescopic locking support grooves, and several of the horizontal telescopic locking shafts 22 are respectively movably inserted into a pair of the horizontal telescopic locking support convex blocks 21, a pair of the horizontal telescopic locking support convex blocks 21 are provided with several support rotation openings, several of the horizontal telescopic support wheels 23 are respectively inserted into the several support rotation openings through bearings, a pair of the horizontal telescopic locking electromagnets 24 are respectively installed on the inner sides of a pair of the convex telescopic locking support grooves, a pair of the horizontal telescopic locking magnets 25 are respectively installed on a pair of the horizontal telescopic locking support convex blocks On the block 21, a pair of small lifting winches 26 are respectively installed on the inner sides of a pair of lifting concave grooves, and a pair of small lifting winches 26 are connected to the circular lifting adjustment block 19; the collection structure includes: a pair of toothed collection pipes 27, a shunt drainage pipe 28, an air pump 29, a filter collection box 30, a filter screen 31, a filter carbon 32, an electrostatic emitter 33 and a telescopic drainage component; a pair of toothed collection pipes 27 are inserted on the horizontal sides of the concave cleaning support block 3, the shunt drainage pipe 28 is connected to a pair of toothed collection pipes 27, and the filter collection box 30 is installed on the concave cleaning support block 3 , and the filter collection box 30 is connected to the shunt drainage pipe 28, the vacuum pump 29 is installed on the filter collection box 30, the filter screen 31 is evenly installed on the inner side of the filter collection box 30, the filter carbon 32 is placed on the inner side of the filter collection box 30, the electrostatic emitter 33 is installed on the filter screen 31, and the telescopic drainage component is installed on a pair of the toothed collection pipes 27; the telescopic drainage component includes: a plurality of convex telescopic drainage pipes 34, a plurality of extended telescopic limit shafts 35, a plurality of extended telescopic set springs 36, a plurality of extended annular magnets 37 and two pairs of extended electromagnets 38;A plurality of the convex telescopic drainage tubes 34 are respectively movably inserted into the inner side of a pair of the toothed collection tubes 27, a plurality of the extended telescopic limit shafts are respectively movably inserted into the inner side of a pair of the toothed collection tubes 27, and a plurality of the extended telescopic limit shafts are respectively movably inserted into a plurality of the convex telescopic drainage tubes 34, a plurality of the extended telescopic sleeve springs 36 are respectively sleeved on a plurality of the extended telescopic limit shafts 35, a plurality of the extended circular ring magnets 37 are respectively installed on a plurality of the convex telescopic drainage tubes, and two pairs of the extended electromagnets 38 are respectively installed on a pair of convex The cleaning water washing structure comprises: a concave cleaning box 39, a discharge valve 40, a pair of extrusion drainage convex blocks 41, a toothed relative telescopic block 42, a plurality of horizontal extrusion wheels 44, a plurality of horizontal drainage limit telescopic shafts 44, a pair of extrusion cleaning electromagnets 45, a pair of extrusion cleaning magnets 46 and a plurality of extrusion drainage set springs 47; the concave cleaning box 39 is installed at the bottom end of the side wall of the blackboard 1, the discharge valve 40 is installed on the bottom end of the side wall of the concave cleaning box 39, and a convex extrusion drainage groove is opened on the inner side of the concave cleaning box 39. The extrusion drainage convex block is movably inserted into the inner side of a pair of convex extrusion drainage grooves, a plurality of horizontal drainage limit telescopic shafts 44 are respectively inserted into the inner side of a pair of convex extrusion drainage grooves, and a plurality of horizontal drainage limit telescopic shafts 44 are respectively movably inserted into a pair of extrusion drainage convex blocks, a plurality of extrusion drainage sleeve springs 47 are respectively sleeved on a plurality of horizontal drainage limit telescopic shafts 44, the toothed relative telescopic block 42 is installed on the extrusion drainage convex block, and a plurality of horizontal extrusion wheels 44 are installed on the toothed relative telescopic block 42. , a pair of the extrusion cleaning magnets 46 are respectively installed on a pair of the extrusion drainage convex blocks 41, and a pair of the extrusion cleaning electromagnets 45 are respectively installed on the inner side of a pair of the convex extrusion drainage grooves; a scraper is provided on the relative telescopic block 42 of the toothed assembly; an infrared locator is provided on the concave cleaning support block 3; current regulators are provided on the two pairs of the expansion electromagnets 38, the horizontal circular telescopic electromagnet 13 and the extrusion cleaning electromagnet 45; a scanning camera is provided on the concave cleaning support block 3; and a plurality of air-drying fans are provided on the concave cleaning support block 3. ;

[0040] According to the attached Figure 1-9It is concluded that, through the operation of a pair of horizontally movable lead screw modules 2, the concave cleaning support block 3 on the moving end of the pair of horizontally movable lead screw modules 2 is driven, so that the concave cleaning support block 3 is moved along the moving end of the pair of horizontally movable lead screw modules 2, and the horizontal circular telescopic electromagnet 13 inside the concave telescopic block 9 is energized, and the horizontal circular telescopic magnet 14 on the convex telescopic block 10 is magnetically attracted or repelled by the different magnetic poles and magnetism generated by the horizontal circular telescopic electromagnet 13, so that the convex telescopic block 10 is telescoped along the inner side of the concave telescopic block 9, and the lifting support plate on it is driven by the convex telescopic block 10, so that the rotating cleaning support block on the lifting support plate is moved. The cleaning shaft 5 and the rotating cleaning cylindrical brush 6 thereon squeeze the blackboard 1, and at the same time, the rotating cleaning motor 7 is operated to drive the rotating cleaning shaft 5 on the driving end of the rotating cleaning motor 7 to rotate, and the rotating cleaning shaft 5 drives the rotating cleaning cylindrical brush 6 thereon to rotate and clean the sponge. At the same time, a pair of horizontally movable screw modules 2 are operated, so as to horizontally telescope and reversely rotate and clean along the blackboard 1, and some dust in the air is electrostatically adsorbed, and at the same time, the air on both sides of the rotating cleaning is adsorbed and filtered through the collection structure, and the lifting support plate drives the cleaning sponge 15 thereon, and the cleaning sponge 15 is used to wet and clean the blackboard 1, and then the cleaning sponge 15 is used to clean the blackboard 1. The concave telescopic block 9 is driven by the lifting and adjusting component, so that the equipment on the concave telescopic block 9 is inserted into the inner side of the concave cleaning box 39; a pair of horizontal telescopic locking electromagnets 24 are energized, so that the pair of horizontal telescopic locking electromagnets 24 generate magnetism, and the current direction of the horizontal telescopic locking electromagnets 24 is changed, thereby changing the magnetism of the horizontal telescopic locking electromagnets 24, and adsorbing or repelling the horizontal telescopic locking magnets 25 through different magnetism, and the horizontal telescopic locking support convex blocks 21 thereon are driven by the pair of horizontal telescopic locking magnets 25 respectively, and the horizontal telescopic locking support convex blocks 21 are inserted into the circular lifting and adjusting component. The inner side of the node block 19, thereby fixing the circular lifting adjustment block 19 on the top of the inner side of the lifting hole, and at the same time, the circular lifting adjustment block 19 is lifted and limited by a plurality of lifting adjustment shafts 18, and the circular lifting adjustment block 19 is stably lifted and lowered on a plurality of lifting adjustment shafts 18 by the lifting linear bearings 20, and at the same time, a pair of horizontal telescopic locking support convex blocks 21 are horizontally supported and telescopically limited by a plurality of horizontal telescopic locking shafts 22, and the lifting and lowering of the circular lifting adjustment block 19 drives the concave telescopic block 9 thereon to insert the cleaning parts into the inner side of the cleaning water washing structure, thereby achieving automatic insertion into the inner side of the cleaning water washing structure;The air inside the filter collection box 30 is pumped out by the vacuum pump 29, so that negative pressure is generated inside the filter collection box 30, and the air inside the diversion drainage tube 28 and a pair of toothed collection tubes 27 is drained to the inside of the filter collection box 30 through the negative pressure. Similarly, the air around the blackboard 1 wrapped by the concave cleaning support block 3 is drained to the inside of the filter collection box 30 through a pair of toothed collection tubes 27. At the same time, the dust in the gas is filtered through the cooperation of the electrostatic filter 31 and the filter carbon 32, and the distance between the adsorption range and the blackboard 1 is adjusted by the telescopic drainage component; two pairs of extended electromagnets 38 are energized, and the two pairs of extended electromagnets 38 are used to magnetically repel a number of extended circular ring magnets 37. The magnet 37 drives the convex telescopic drainage tubes 34 thereon, so that the convex telescopic drainage tubes 34 are magnetically extended and retracted along the inner side of a pair of toothed collection tubes 27, and the convex telescopic drainage tubes 34 are extended and retracted by the convex telescopic limit shafts 35, and the convex telescopic drainage tubes 34 on the convex telescopic limit shafts 35 are controlled and retracted by the convex telescopic set springs 36. The concave telescopic block 9 and the lifting support plate are lifted and lowered, so as to achieve automatic cleaning of the cleaning equipment, avoiding the need for manual replacement and cleaning of the cleaning equipment after operation. The whole device drains part of the dust to the inner side of the concave cleaning box 39, mixes the dust with liquid, and avoids dust splashing. ;

[0041] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A dust-free teaching demonstration device for teaching, comprising: A blackboard, a pair of horizontally movable lead screw modules and a concave cleaning support block, characterized in that the pair of horizontally movable lead screw modules are respectively installed on the upper and lower ends of the blackboard, the concave cleaning support block is installed on the movable ends of the pair of horizontally movable lead screw modules, an adsorption cleaning structure and a collection structure are installed on the concave cleaning support block, and a cleaning water washing structure is installed on the blackboard; The adsorption cleaning structure comprises: a lifting support block, a rotating cleaning shaft, a rotating cleaning cylindrical brush, a rotating cleaning motor, a concave telescopic block, a convex telescopic block, two pairs of horizontal telescopic fine-tuning shafts, two pairs of horizontal telescopic fine-tuning set springs, a horizontal circular telescopic electromagnet, a horizontal circular telescopic magnet, a cleaning sponge, a cleaning air pressure circular airbag, an inflatable squeezing pump and a lifting and lowering adjustment component; The lifting support block is provided with an arc groove, the rotating cleaning shaft is inserted into the inner side of the arc groove through a bearing, the rotating cleaning cylindrical brush is installed on the rotating cleaning shaft, the lifting support block is provided with a rotating cleaning drive groove, the rotating cleaning motor is installed on the inner side of the rotating cleaning drive groove, and the driving end of the rotating cleaning motor is connected to the rotating cleaning shaft, the convex telescopic block is movably inserted into the inner side of the concave telescopic block, the lifting support block is installed on the convex telescopic block, two pairs of the horizontal telescopic fine-tuning shafts are inserted into the concave telescopic block in parallel, and the two pairs of the horizontal telescopic fine-tuning shafts are evenly inserted into the convex telescopic block. The horizontal back-shaped telescopic electromagnet is installed on the concave telescopic block, the horizontal back-shaped telescopic magnet is installed on the convex telescopic block, the two pairs of horizontal telescopic fine-tuning sleeve springs are respectively sleeved on the two pairs of horizontal telescopic fine-tuning shafts, the lifting support block is provided with a sponge groove, the sponge groove is provided with a back-shaped expansion groove, the cleaning sponge is installed on the inner side of the sponge groove, the cleaning air pressure back-shaped airbag is installed on the inner side of the back-shaped expansion groove, the inflation squeeze pump is inserted on the inner side of the lifting support block, and the inflation squeeze pump is connected to the cleaning air pressure back-shaped airbag, and the concave telescopic block is installed on the concave cleaning support block through the lifting adjustment component; The lifting adjustment assembly includes: a plurality of lifting adjustment shafts, a circular lifting adjustment block, a plurality of lifting linear bearings, a pair of horizontal telescopic locking support convex blocks, a plurality of horizontal telescopic locking shafts, a plurality of horizontal telescopic supporting wheels, a pair of horizontal telescopic locking electromagnets, a pair of horizontal telescopic locking magnets and a pair of small lifting winches; The concave cleaning support block is provided with a lifting hole and a pair of lifting concave grooves, and several lifting adjustment shafts are movably inserted into the inner sides of the pair of lifting concave grooves, the circular lifting adjustment block is installed on the concave telescopic block, several lifting linear bearings are evenly inserted into the circular lifting adjustment block, and several lifting linear bearings are movably sleeved on several lifting adjustment shafts, a pair of lifting concave grooves are respectively provided with convex telescopic locking support grooves, a pair of horizontal telescopic locking support convex blocks are movably inserted into the inner sides of a pair of convex telescopic locking support grooves, and several horizontal telescopic locking shafts are movably inserted into a pair of convex telescopic locking The inner side of the support groove, and several of the horizontal telescopic locking shafts are movably inserted on a pair of the horizontal telescopic locking support convex blocks, a pair of the horizontal telescopic locking support convex blocks are provided with several support rotation openings, several of the horizontal telescopic support wheels are respectively inserted on the several support rotation openings through bearings, a pair of the horizontal telescopic locking electromagnets are respectively installed on the inner side of a pair of the convex telescopic locking support grooves, a pair of the horizontal telescopic locking magnets are respectively installed on a pair of the horizontal telescopic locking support convex blocks, a pair of the small lifting winches are respectively installed on the inner side of a pair of the lifting concave grooves, and a pair of the small lifting winches are connected to the circular lifting adjustment block; The cleaning water washing structure comprises: a concave cleaning box, a discharge valve, a pair of extrusion drainage convex blocks, a toothed relative telescopic block, a plurality of horizontal extrusion wheels, a plurality of horizontal drainage limit telescopic shafts, a pair of extrusion cleaning electromagnets, a pair of extrusion cleaning magnets and a plurality of extrusion drainage set springs; The concave cleaning box is installed at the bottom end of the side wall of the blackboard, the unloading valve is installed on the bottom end of the side wall of the concave cleaning box, a convex extrusion drainage groove is opened on the inner side of the concave cleaning box, a pair of extrusion drainage convex blocks are movably inserted in the inner side of a pair of convex extrusion drainage grooves, a number of horizontal drainage limit telescopic shafts are respectively inserted in the inner side of a pair of convex extrusion drainage grooves, and a number of horizontal drainage limit telescopic shafts are respectively movably inserted on a pair of extrusion drainage convex blocks, a number of extrusion drainage sleeve springs are respectively sleeved on a number of horizontal drainage limit telescopic shafts, the toothed relative telescopic block is installed on the extrusion drainage convex block, a number of horizontal extrusion wheels are installed on the toothed relative telescopic block, a pair of extrusion cleaning magnets are respectively installed on a pair of extrusion drainage convex blocks, and a pair of extrusion cleaning electromagnets are respectively installed on the inner side of a pair of convex extrusion drainage grooves.

2. A dust-free teaching demonstration device for teaching according to claim 1, characterized in that: The collection structure comprises: a pair of toothed collection pipes, a diversion drainage pipe, an air pump, a filter collection box, a filter screen, filter carbon, an electrostatic emitter and a telescopic drainage assembly; A pair of toothed collecting tubes are inserted on both horizontal sides of the concave cleaning support block, the diverter drainage tube is connected to the pair of toothed collecting tubes, the filter collection box is installed on the concave cleaning support block, and the filter collection box is connected to the diverter drainage tube, the vacuum pump is installed on the filter collection box, the filter net is evenly installed on the inner side of the filter collection box, the filter carbon is placed on the inner side of the filter collection box, the electrostatic emitter is installed on the filter net, and the telescopic drainage assembly is installed on a pair of toothed collecting tubes.

3. A dust-free teaching demonstration device for teaching according to claim 2, characterized in that: The telescopic drainage assembly comprises: a plurality of convex telescopic drainage tubes, a plurality of expansion telescopic limit shafts, a plurality of expansion telescopic sleeve springs, a plurality of expansion ring magnets and two pairs of expansion electromagnets; A number of the convex telescopic drainage tubes are movably inserted into the inner sides of a pair of the toothed collecting tubes, a number of the extended telescopic limit shafts are movably inserted into the inner sides of a pair of the toothed collecting tubes, and a number of the extended telescopic limit shafts are movably inserted into a number of the convex telescopic drainage tubes, a number of the extended telescopic sleeve springs are respectively sleeved on a number of the extended telescopic limit shafts, a number of the extended ring magnets are respectively installed on a number of the convex telescopic drainage tubes, and two pairs of the extended electromagnets are respectively installed on a pair of convex collecting tubes.

4. A dust-free teaching demonstration device for teaching according to claim 3, characterized in that: A scraper is arranged on the relative telescopic block of the toothed assembly.

5. A dust-free teaching demonstration device for teaching according to claim 4, characterized in that: The concave cleaning support block is provided with an infrared locator.

6. A dust-free teaching demonstration device for teaching according to claim 5, characterized in that: Current regulators are arranged on the two pairs of the expansion electromagnets, the horizontally circular telescopic electromagnets and the extrusion cleaning electromagnets.

7. A dust-free teaching demonstration device for teaching according to claim 6, characterized in that: A scanning camera is arranged on the concave cleaning support block.

8. A dust-free teaching demonstration device for teaching according to claim 7, characterized in that: A plurality of air-drying fans are arranged on the concave cleaning support block.

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