CN112123979B - Air bag type dust removal blackboard eraser and using method thereof - Google Patents
Air bag type dust removal blackboard eraser and using method thereof Download PDFInfo
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- CN112123979B CN112123979B CN202011040753.7A CN202011040753A CN112123979B CN 112123979 B CN112123979 B CN 112123979B CN 202011040753 A CN202011040753 A CN 202011040753A CN 112123979 B CN112123979 B CN 112123979B
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- blackboard eraser
- conveyor belt
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- air bag
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
- B43L21/02—Blackboard or slate cleaning devices with means for absorbing the chalk dust
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
Abstract
The invention discloses an air bag type dust cleaning blackboard eraser and a using method thereof. Because the dust absorbing capacity of the blackboard eraser is limited, when the blackboard eraser is saturated, the problem of flying dust exists. The invention relates to an air bag type dust cleaning blackboard eraser which comprises a box body, an erasing component, a dust cleaning component and a dust adsorption module, wherein the erasing component is arranged on the box body; the bottom of the box body is opened; the erasing component comprises a brush conveyor belt, a conveyor belt rotating shaft and a roller; the ash removal component comprises a scraper, a drawer box and an ash removal driving component; the dust adsorption module adsorbs dust entering the drawer box; the ash removal driving component comprises an air storage bag, a roller and an annular air bag; in the erasing process, the chalk dust adhered to the brush conveying belt can be scraped in the sliding blackboard eraser process by pressing the air storage bag by the palm of the hand, so that the blackboard eraser can be continuously used, and the dust pollution caused by manually beating the blackboard eraser is reduced.
Description
Technical Field
The invention belongs to the technical field of teaching aids, and particularly relates to an air bag type dust removal blackboard eraser and a using method thereof.
Background
In primary and secondary school teaching, a blackboard is widely used, characters on the blackboard are erased by using a blackboard eraser generally, but the blackboard eraser is limited in dust absorption capacity, so that dust flies when the blackboard eraser is saturated, and a large amount of dust is absorbed into lungs after the blackboard eraser is used for a long time, so that diseases such as pneumonia and pulmonary tuberculosis are caused, and the health of teachers is seriously damaged. In addition, in the process of erasing the blackboard, the blackboard eraser can generate larger raised dust at the moment of being lifted away from the blackboard, and if the raised dust can be adsorbed at the moment, most of the raised dust in the process of erasing the blackboard can be solved.
Disclosure of Invention
The invention aims to provide an air bag type dust removal blackboard eraser and a using method thereof.
The invention relates to an air bag type dust cleaning blackboard eraser which comprises a box body, an erasing component, a dust cleaning component and a dust adsorption module, wherein the erasing component is arranged on the box body; the bottom of the box body is opened; the erasing component comprises a brush conveyor belt, a conveyor belt rotating shaft and a roller; the two conveyor belt rotating shafts are respectively arranged on two sides of the bottom of the inner cavity of the box body; the rotary shafts of the two conveyor belts are respectively fixed with a roller; the two rollers are connected through a brush conveyor belt; when the brush conveyor belt slides on the blackboard, the friction force generated does not drive the conveyor belt rotating shaft to rotate; the ash removal component comprises a scraping plate, a drawer box and an ash removal driving component; the middle part of one end of the box body is provided with a drawer hole or the middle parts of the two ends are provided with drawer holes; the drawer hole is positioned between the two conveyor belt rotating shafts; a drawer box is inserted into the drawer hole; the inner side edge of the scraper is fixed with the middle part of the sliding plate; the inner side of the scraper brush conveyor belt; the dust attached to the brush conveyor belt is scraped off in the moving process of the brush conveyor belt; the inner side surface of the drawer box is provided with an opening; the end parts of the scraping plates are close to the openings of the two drawer boxes; the dust adsorption module adsorbs dust entering the drawer box;
the ash removal driving component comprises an air storage bag, a roller and an annular air bag; the air storage bag is fixed at the top of the box body; both ends of each conveyor belt rotating shaft are fixed with rollers; the outer circumference of each roller is fixed with an annular air bag; each annular air bag is connected to the annular air bag through a ventilation rotary joint and an air pipe; in an initial state, the outer diameter of the annular air bag is smaller than the diameter of the roller.
Preferably, the dust collector also comprises a dust collection assembly; the dust collection assembly comprises a sliding plate, a return spring and a dust outlet cover. The sliding plate is arranged in the box body in a vertically sliding manner; the inner side of the sliding plate and the inner cavity of the box body form a dust suction cavity; one or more limiting blocks are fixed on the bottom surface of the inner cavity of the box body. One or more return springs are arranged between the bottom surface of the inner cavity of the box body and the sliding plate; a plurality of vent holes are formed in the periphery of the side face of the box body; the vent hole is communicated with the dust suction cavity. The two conveyor belt rotating shafts are supported on the outer side of the sliding plate and slide along with the sliding plate, so that the brush conveyor belt drives the sliding plate to slide when being pressed. The dust adsorption module adsorbs dust entering the dust suction cavity;
preferably, the dust collector also comprises a dust hood; the two dust hoods are respectively arranged at two sides of the box body; covering all or part of the vent holes.
Preferably, the box body is provided with an ash outlet communicated with the dust suction cavity; an ash discharging cover is detachably arranged on the ash discharging port.
Preferably, the dust adsorption module comprises a first electrostatic grid, a second electrostatic grid, a switch, a battery and a voltage booster circuit. The input interface of the booster circuit is connected with the positive and negative electrodes of the battery through a switch. And a negative electrode output interface of the booster circuit is connected to the first electrostatic grid and the second electrostatic grid. The first electrostatic grid is arranged in the dust collection cavity; the second electrostatic grid is arranged in the drawer box.
Preferably, the dust adsorption module comprises a first polar plate, a second polar plate, a grid electrode, a switch, a battery and a booster circuit. The input interface of the booster circuit is connected with the positive and negative electrodes of the battery through a switch. Two first polar plates which are arranged at intervals are arranged in the dust collection cavity; the two first polar plates are respectively connected with a positive output interface and a negative output interface of the booster circuit; two second polar plates which are arranged at intervals are arranged in the drawer hole; the two second polar plates are respectively connected with the positive output interface and the negative output interface of the booster circuit; grid electrodes are arranged at the inner sides of the vent holes and the opening of the drawer box; each grid electrode is connected to the negative output interface of the booster circuit;
preferably, the dust adsorption module adopts felt or wet sponge or activated carbon.
Preferably, the box body is provided with a rotating rod for locking the drawer box at a position close to the drawer hole.
Preferably, a plurality of salient points are arranged on the outer circumferential surface of the annular air bag.
Preferably, a user holds the blackboard eraser by hand, a brush conveyor belt of the blackboard eraser is pressed on a blackboard, bristles on the conveyor belt contact the blackboard, the conveyor belt is extruded to drive a sliding plate to slide inwards, a return spring is compressed, and a dust suction cavity is compressed, so that gas in the dust suction cavity is discharged from a vent hole; when one erasing action is finished, a user lifts the blackboard eraser, the sliding plate resets under the action of the reset spring, the volume of the dust collection cavity is increased to form negative pressure, raised dust generated when the blackboard eraser is lifted enters the dust collection cavity through the vent hole, and the raised dust generated when the blackboard eraser is lifted is reduced. In the whole blackboard erasing process, dust is absorbed once when one erasing action is finished.
When the brush conveyor belt of the blackboard eraser contains excessive dust on the outward side surface; a user vertically places the blackboard eraser; the palm of a user presses the gas storage bag at the top of the box body, gas in the gas storage bag flows into the annular gas bag, so that the annular gas bag is inflated and expanded, and the wheel surface of the annular gas bag is in contact with the blackboard surface; then, a user transversely slides the blackboard eraser, the roller and the rotating shaft of the conveyor belt rotate due to the friction action of the annular air bag and the blackboard, so that the brush conveyor belt rotates, and when the bristles with dust rotate to contact with the scraper, the scraper scrapes the dust on the bristles; the dust scraped off by the scraper falls into a drawer box positioned below the box body and is adsorbed onto a second electrostatic grid; after the bristles stained with dust are scraped, the user loosens the air storage bag, so that the opening of the drawer box positioned below the box body is closed, and the annular air bag is separated from the blackboard.
The invention has the beneficial effects that:
1. in the erasing process, the chalk dust adhered to the brush conveying belt can be scraped in the sliding blackboard eraser process by pressing the air storage bag by the palm of the hand, so that the blackboard eraser can be continuously used, and the dust pollution caused by manually beating the blackboard eraser is reduced.
2. According to the invention, through the displacement of the sliding plate generated in the process of pressing the blackboard eraser, negative pressure is generated when a user lifts the blackboard eraser, chalk dust is sucked into the box body, and dust raising is greatly reduced
3. The invention adsorbs dust in a mode of electrostatic adsorption or physical adsorption, and avoids secondary pollution caused by dust overflow in the blackboard eraser.
4. According to the invention, the detachable drawer box is arranged, so that dust can be intensively dumped after being scraped for many times, and the efficiency of blackboard cleaning is greatly improved.
Drawings
FIG. 1 is a front view of embodiment 1 of the present invention;
FIG. 2 is a top view of embodiment 1 of the present invention;
FIG. 3 is a side view of embodiment 1 of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 1;
FIG. 5 is a cross-sectional view B-B of FIG. 4;
FIG. 6 is a cross-sectional view C-C of FIG. 4;
FIG. 7 is a cross-sectional view D-D of FIG. 4;
fig. 8 is a schematic view of embodiment 2 of the present invention.
In the figure: 1. a box body; 11. a sliding plate; 111. a dust suction chamber; 112. a vent hole; 113. a limiting column; 114. a return spring; 12. an air bag; 13. a drawer hole; 14. rotating the rod; 15. an ash outlet; 16. discharging the ash cover; 2. a conveyor belt; 21. a conveyor belt shaft; 22. a roller; 221. an annular air bag; 23. fixing the rod; 24. a brush; 3. a squeegee; 4. a drawer box; a dust hood; 6. a first electrostatic grid; 7. a second electrostatic grid; 81. a switch; 82. a battery; 83. a boost circuit; 91. a first electrode plate; 92. a second polar plate; 93. a grid electrode.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1
As shown in fig. 1, 2 and 3, the air bag type dust cleaning blackboard eraser comprises a box body 1, a dust hood 5, an erasing component, a dust collecting component, a dust cleaning component and a dust adsorption module. The box body 1 is in a cuboid shape, and the lower side surface of the box body is arranged in an open mode to form a main body of the blackboard eraser; two long edge side surfaces of the box body 1 are used as the left side and the right side of the box body, and two short edge side surfaces are used as the front end and the rear end of the box body; the two dust hoods 5 are respectively arranged at the left side and the right side of the box body 1. The erasing component, the dust collection component and the ash removal component are all arranged inside the box body; the erasing component is positioned at the bottom of the box body (namely the opening of the box body 1) and is used for erasing chalk characters on the blackboard; the dust collection assembly is positioned at the top of the box body.
The dust adsorption module includes a first electrostatic grid 6, a second electrostatic grid 7, a switch 81, a battery 82, and a booster circuit 83. The input interface of the booster circuit 83 is connected to the positive and negative poles of the battery 82 via the switch 81. The negative output interface of the booster circuit 83 is connected to the first electrostatic grid 6 and the second electrostatic grid 7, so that the first electrostatic grid 6 and the second electrostatic grid 7 are negatively charged, thereby realizing the adsorption of dust. The first electrostatic grid 6 is arranged in the dust collection assembly and is used for adsorbing dust sucked by the dust collection assembly in the air. The second electrostatic grid 7 is arranged in the ash cleaning component and is used for adsorbing dust scraped off by the ash cleaning component on the erasing component. The boosting circuit 83 can be turned off by the switch 81, so that the first electrostatic grid 6 and the second electrostatic grid 7 are not electrified, and dust stored in the blackboard eraser can be cleaned conveniently.
As shown in fig. 4, 5 and 6, the dust suction assembly includes the sliding plate 11, the return spring 114 and the dust discharge cover 16. The sliding plate 11 is arranged in the box body 1 in a vertically sliding manner; the inner side of the sliding plate 11 and the inner cavity of the box body form a dust suction cavity 111; one or more limiting blocks 113 are fixed on the bottom surface of the inner cavity of the box body and used for limiting the inner limit position of the sliding plate 11. The sliding of the sliding plate 11 can adjust the volume of the dust suction chamber 111, thereby exhausting air from the dust suction chamber 111. A plurality of return springs 114 are arranged between the bottom surface of the inner cavity of the box body and the sliding plate 11; a plurality of vent holes 112 are formed around the side surface of the box body 1; the vent hole 112 is communicated with the dust suction cavity 111; the dust hood 5 covers part or all of the air vents 112. The top of the box body 1 is provided with an ash outlet 15; the dust outlet 15 is detachably provided with a dust outlet cover 16 for regularly cleaning dust in the dust suction cavity 111. One or more first electrostatic grids 6 are arranged in the dust collection cavity 111 and used for adsorbing dust so as to prevent the dust in the dust collection cavity from being discharged again.
As shown in fig. 4, 5, 6 and 7, the wiping unit includes the brush belt 2, a belt rotating shaft 21, a roller, and a fixing lever 23. Fixed bars 23 are fixed to four corners of the outer side surface of the slide plate 11. The two conveyor belt rotating shafts 21 are respectively arranged at the left side and the right side of the inner cavity of the box body 1. The length direction of the conveyor belt rotating shaft 21 is consistent with the long side direction of the box body 1. Two ends of the conveyor belt rotating shaft 21 and a fixed rod 23 respectively form a rotating pair with resistance (realized by interference fit of the conveyor belt rotating shaft 21 penetrating through a rubber hole). Rollers are fixed on the two conveyor belt rotating shafts 21; the two rollers are connected by a brush conveyor belt 2. The outer side surface of the brush conveyor belt 2 is provided with dense brush hairs 24 for erasing chalk characters and temporarily storing dust. The friction force between the brush 24 and the blackboard is small; so that the roller can not be driven to rotate in the normal blackboard erasing process. When the brush belt 2 slides to the inner limit position, a part is still outside the case 1, so that effective erasing is performed.
When a user presses the brush conveyor belt 2 onto the blackboard, the sliding plate is driven to slide inwards, the volume of the dust suction cavity 111 is compressed, and the gas in the dust suction cavity 111 is discharged from the vent hole 112; since the dust enters and is adsorbed on the first electrostatic grid 6, the dust is not discharged while the gas is discharged. When a user finishes an erasing action and lifts the blackboard eraser to separate the brush conveyor belt 2 from the blackboard, the sliding plate is pushed out to reset under the action of the reset spring 114, so that the volume of the dust suction cavity 111 is increased to generate negative pressure, and air around each vent hole 112 carries dust generated when the blackboard eraser is lifted to be sucked into the dust suction cavity 111 together, thereby reducing raised dust.
The ash cleaning component comprises a scraper 3, a drawer box 4 and an ash cleaning driving component. The middle parts of the front end and the rear end of the box body 1 are provided with drawer holes 13; the drawer hole 13 is positioned between the two conveyor belt rotating shafts 21; and second electrostatic grids 7 are arranged in the two drawer holes 13 and used for adsorbing dust scraped off by the scraper 3 on the brush conveyor belt 2. The two drawer boxes 4 are respectively inserted into the two drawer holes 13; in the case where the drawer box 4 is inserted into the drawer hole 13, the second electrostatic grid 7 is located inside the drawer box 4. The drawer box 4 is located at the outer side of the sliding plate 11. The front end and the rear end of the box body 1 are provided with rotating rods 14 close to the drawer holes; the drawer box can be locked in the box body 1 by rotating the turning lever 14. The edge of the inner side of the scraper 3 is fixed with the middle part of the sliding plate 11, and the edge of the outer side extends into the bristles 24 on the inward side of the brush conveyor 2, so that dust attached to the bristles 24 is scraped off in the moving process of the brush conveyor 2; the inner side surfaces of the two drawer boxes 4 are provided with openings; the two ends of the scraping plate 3 are respectively close to the openings on the inner sides of the two drawer boxes 4, so that the scraped dust can be conveniently guided into the drawer boxes 4. In addition, the opening on the inner side surface of the drawer box 4 is also used for preventing the drawer box 4 from contacting the second electrostatic grid 7 in a drawing mode. Because the second electrostatic grid 7 is arranged in the drawer box 4, dust entering the drawer box 4 can be adsorbed on the second electrostatic grid 7 and cannot leave the drawer box again due to gravity and the like.
The ash cleaning driving component comprises an air storage bag 12, a roller 22 and an annular air bag 221; the air storage bag 12 is fixed on the top of the box body 1; rollers are fixed at both ends of each conveyor belt rotating shaft 21. The outer circumference of each roller 22 is fixed with an annular air bag 221; each annular air cell 221 is connected to the annular air cell 221 through a ventilation rotary joint and an air tube. In an initial state, the outer diameter of the annular air bag 221 is smaller than that of the roller, and the annular air bag cannot be in contact with the blackboard; when the user extrudes the air storage bag 12, the air in the air storage bag 12 enters the annular air bag 221, the annular air bag 221 expands, the outer diameter of the annular air bag is increased to be in contact with a blackboard, at the moment, the blackboard eraser slides on the blackboard along the width direction, the annular air bag 221 and the roller 22 can be driven to rotate through friction force, so that the conveyor belt starts to move, and dust on the bristles 24 of the brush conveyor belt 2 is scraped off by the scraper.
As a preferable technical solution, a plurality of protrusions are provided on the outer circumferential surface of the annular bladder 221 to increase the frictional force.
The use method of the air bag type dust removal blackboard eraser comprises the following steps:
a user holds the blackboard eraser by hand, the brush conveyor belt 2 of the blackboard eraser is pressed on a blackboard, bristles 24 on the brush conveyor belt 2 contact the blackboard, the brush conveyor belt 2 is extruded, the brush conveyor belt 2 pushes the sliding plate 11 to move upwards through the fixed rod 23, the reset springs 114 are compressed, the dust absorption cavity 111 is compressed, and therefore gas in the dust absorption cavity 111 is discharged from the vent hole 112; since the dust enters and is adsorbed on the first electrostatic grid 6, the dust is not discharged while the gas is discharged. After an erasing action is finished, a user lifts the blackboard eraser, the sliding plate 11 is reset under the action of the plurality of reset springs 114, the volume of the dust suction cavity 111 is increased to form negative pressure, raised dust generated when the blackboard eraser is lifted enters the dust suction cavity 111 through the vent holes 112, and the raised dust generated when the blackboard eraser is lifted is reduced. In the whole blackboard erasing process, dust is absorbed once when one erasing action is finished.
When the brush conveyor belt 2 of the blackboard eraser contains too much dust on the outward side; a user vertically places the blackboard eraser; the palm of a user presses the air storage bag 12 at the top of the box body 1, the air in the air storage bag 12 flows into the annular air bag 221, so that the annular air bag 221 is inflated and expanded, and the wheel surface of the annular air bag 221 contacts the blackboard surface; then, the user slides the blackboard eraser transversely, the roller 22 and the conveyor belt rotating shaft 21 rotate due to the friction action of the annular air bag 221 and the blackboard, so that the brush conveyor belt 2 rotates, and when the bristles 24 with dust rotate to contact with the scraper 3, the scraper 3 scrapes off the dust on the bristles 24; the dust scraped off by the scraper 3 falls into a drawer box 4 positioned below the box body 1 and is adsorbed onto a second electrostatic grid 7; after the bristles stained with dust are scraped, the user loosens the air storage bag, so that the opening of the drawer box 4 positioned below the box body is closed, and the annular air bag 221 is separated from the blackboard. After the multi-use, the booster circuit can be closed to draw out the drawer box 4, and the internal dust is dumped, so that the operation is simple and convenient.
Example 2
This example differs from example 1 in that: the first electrostatic grid 6 and the second electrostatic grid 7 are not provided.
As shown in fig. 8, a first polar plate 91 is fixed on the bottom surface of the inner cavity of the box body 1 and the inner side surface of the sliding plate 11; the two first polar plates 91 are respectively connected with a positive output interface and a negative output interface of the booster circuit; two second pole plates 92 arranged at intervals are arranged in the drawer hole 13; the two second plates 92 are respectively connected with the positive output interface and the negative output interface of the booster circuit; the inner sides of the vent holes 112 and the opening of the drawer box 4 are provided with grid electrodes 93; each grid electrode 93 is connected to the negative output interface of the booster circuit;
uniform magnetic fields are generated between the two first polar plates and between the two second polar plates; when dust passes through the grid electrode, the dust is charged with negative charges; the dust with negative charges enters a uniform electric field and is adsorbed on the polar plate.
Example 3
This example differs from example 1 in that: the dust adsorption module comprises a first felt and a second felt; the first felt is arranged in the dust collection cavity; and second felts are arranged in the two drawer boxes 4. The uneven and fluffy surface of the felt can adsorb dust, and the felt is prevented from entering the dust suction cavity and being separated from the drawer box 4.
The power supply is not needed in the embodiment, and the felt can be taken out for cleaning to realize repeated use;
example 4
This example differs from example 1 in that: the dust adsorption module comprises a first sponge and a second sponge; the first sponge is arranged in the dust collection cavity; second sponges are arranged in the two drawer boxes 4. The first sponge and the second sponge are wet sponges, and dust is adsorbed after being soaked on the sponges.
The sponge cleaning device does not need to be powered, and can be reused by taking out the sponge for cleaning;
example 5
This example differs from example 1 in that: the first electrostatic grid 6 and the second electrostatic grid 7 are not arranged in the dust suction cavity and the drawer box 4. The dust suction cavity and the drawer box 4 are both provided with active carbon.
Claims (10)
1. An air bag type dust cleaning blackboard eraser comprises a box body (1) and an erasing component; the method is characterized in that: the dust collector also comprises a dust cleaning component and a dust adsorption module; the bottom of the box body (1) is opened; the erasing component comprises a brush conveyor belt (2), a conveyor belt rotating shaft (21) and a roller; the two conveyor belt rotating shafts (21) are respectively arranged at two sides of the bottom of the inner cavity of the box body (1); rollers are fixed on the two conveyor belt rotating shafts (21); the two rollers are connected through a brush conveyor belt (2); when the brush conveyor belt (2) slides on the blackboard, the friction force generated does not drive the conveyor belt rotating shaft (21) to rotate; the ash removal component comprises a scraping plate (3), a drawer box (4), an ash removal driving component and a drawer inlet opening and closing component; a drawer hole (13) is formed in the middle of one end of the box body (1) or drawer holes (13) are formed in the middle of the two ends of the box body; the drawer hole (13) is positioned between the two conveyor belt rotating shafts (21); a drawer box (4) is inserted into the drawer hole (13); the inner side edge of the scraper (3) is fixed with the middle part of the sliding plate (11); the scraper (3) is arranged on the inner side of the brush conveyor belt (2); the dust attached to the brush conveyor belt (2) is scraped off in the moving process of the brush conveyor belt (2); an opening is formed in the inner side face of the drawer box (4); the end parts of the scrapers (3) are close to the openings of the two drawer boxes (4); the dust adsorption module adsorbs dust entering the drawer box (4);
the ash cleaning driving component comprises an air storage bag (12), a roller (22) and an annular air bag (221); the air storage bag (12) is fixed at the top of the box body (1); both ends of each conveyor belt rotating shaft (21) are fixed with rollers; the outer circumferential surface of each roller (22) is fixed with an annular air bag (221); each annular air bag (221) is connected to the annular air bag (221) through a ventilation rotary joint and an air pipe; in an initial state, the outer diameter of the annular air bag (221) is smaller than the diameter of the roller.
2. The air bag type dust removal blackboard eraser according to claim 1, characterized in that: also comprises a dust collection component; the dust collection assembly comprises a sliding plate (11), a return spring (114) and a dust discharge cover (16); the sliding plate (11) is arranged in the box body (1) in a vertically sliding manner; the inner side of the sliding plate (11) and the inner cavity of the box body form a dust suction cavity (111); one or more limiting blocks (113) are fixed on the bottom surface of the inner cavity of the box body; one or more return springs (114) are arranged between the bottom surface of the inner cavity of the box body and the sliding plate (11); a plurality of vent holes (112) are formed in the periphery of the side surface of the box body (1); the vent hole (112) is communicated with the dust suction cavity (111); the two conveyor belt rotating shafts (21) are supported on the outer side of the sliding plate (11) and slide along with the sliding plate (11), so that the brush conveyor belt (2) is pressed to drive the sliding plate (11) to slide; the dust adsorption module adsorbs dust entering the dust adsorption cavity (111).
3. The airbag type dust removal blackboard eraser as claimed in claim 2, wherein: also comprises a dust hood (5); the two dust hoods (5) are respectively arranged on two sides of the box body (1); covering all or part of the ventilation holes (112).
4. The airbag type dust removal blackboard eraser as claimed in claim 2, wherein: an ash outlet (91) communicated with the dust suction cavity (111) is formed in the box body (1); an ash outlet cover (92) is detachably arranged on the ash outlet (91).
5. The airbag type dust removal blackboard eraser as claimed in claim 2, wherein: the dust adsorption module comprises a first electrostatic grid (6), a second electrostatic grid (7), a switch (81), a battery (82) and a booster circuit (83); the input interface of the booster circuit (83) is connected with the positive and negative electrodes of the battery (82) through a switch (81); the negative electrode output interface of the booster circuit (83) is connected to the first electrostatic grid (6) and the second electrostatic grid (7); the first electrostatic grid (6) is arranged in the dust absorption cavity (111); the second electrostatic grid (7) is arranged in the drawer box (4).
6. The airbag type dust removal blackboard eraser as claimed in claim 2, wherein: the dust adsorption module comprises a first polar plate (91), a second polar plate (92), a grid electrode (93), a switch (81), a battery (82) and a booster circuit (83); the input interface of the booster circuit (83) is connected with the positive and negative electrodes of the battery (82) through a switch (81); two first polar plates (91) which are arranged at intervals are arranged in the dust suction cavity (111); the two first polar plates (91) are respectively connected with a positive output interface and a negative output interface of the booster circuit; two second polar plates (92) which are arranged at intervals are arranged in the drawer hole (13); the two second polar plates (92) are respectively connected with the positive output interface and the negative output interface of the booster circuit; grid electrodes (93) are arranged at the inner sides of the vent holes (112) and the opening of the drawer box (4); each grid electrode (93) is connected to the negative output interface of the booster circuit.
7. The airbag type dust removal blackboard eraser as claimed in claim 2, wherein: the dust adsorption module adopts felt or wet sponge or activated carbon.
8. The air bag type dust removal blackboard eraser according to claim 1, characterized in that: the positions, close to the drawer holes, on the box body (1) are provided with rotating rods (14) used for locking the drawer boxes (4).
9. The air bag type dust removal blackboard eraser according to claim 1, characterized in that: the outer circumferential surface of the annular air bag (221) is provided with a plurality of salient points.
10. The use method of the airbag type dust removal blackboard eraser as claimed in claim 2, characterized in that: a user holds the blackboard eraser by hand, a brush conveyor belt (2) of the blackboard eraser is pressed on a blackboard, bristles (24) on the conveyor belt (2) contact the blackboard, the conveyor belt (2) is extruded to drive a sliding plate (11) to slide inwards, a return spring (114) is compressed, a dust suction cavity (111) is compressed, and gas in the dust suction cavity (111) is discharged from an air vent (112); after one erasing action is finished, a user lifts the blackboard eraser, the sliding plate (11) resets under the action of the reset spring (114), the volume of the dust suction cavity (111) is increased to form negative pressure, raised dust generated when the blackboard eraser is lifted enters the dust suction cavity (111) through the vent hole (112), and the raised dust generated when the blackboard eraser is lifted is reduced; in the whole blackboard erasing process, dust is absorbed once when one erasing action is finished;
when the brush conveyor belt (2) of the blackboard eraser contains excessive dust on the outward side; a user vertically places the blackboard eraser; the palm of a user presses the air storage bag (12) at the top of the box body (1), air in the air storage bag (12) flows into the annular air bag (221), so that the annular air bag (221) is inflated and expanded, and the wheel surface of the annular air bag (221) contacts the blackboard surface; then, a user slides the blackboard eraser transversely, the roller (22) and the conveyor belt rotating shaft (21) rotate due to the friction action of the annular air bag (221) and the blackboard, the brush conveyor belt (2) rotates, and when the bristles (24) with dust rotate to contact with the scraper (3), the scraper (3) scrapes off the dust on the bristles (24); the dust scraped off by the scraper (3) falls into a drawer box (4) positioned below the box body (1) and is adsorbed onto a second electrostatic grid (7); after the bristles stained with dust are scraped, the user loosens the air storage bag, so that the opening of the drawer box (4) positioned below the box body is closed, and the annular air bag (221) is separated from the blackboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011040753.7A CN112123979B (en) | 2020-09-28 | 2020-09-28 | Air bag type dust removal blackboard eraser and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011040753.7A CN112123979B (en) | 2020-09-28 | 2020-09-28 | Air bag type dust removal blackboard eraser and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112123979A CN112123979A (en) | 2020-12-25 |
| CN112123979B true CN112123979B (en) | 2021-10-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011040753.7A Active CN112123979B (en) | 2020-09-28 | 2020-09-28 | Air bag type dust removal blackboard eraser and using method thereof |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203600854U (en) * | 2013-10-29 | 2014-05-21 | 张素颖 | Environment-friendly blackboard eraser |
| CN203752757U (en) * | 2013-12-04 | 2014-08-06 | 廖娅 | Blackboard eraser with dust absorption air bag |
| CN206826265U (en) * | 2017-03-22 | 2018-01-02 | 长江师范学院 | Roller type dust-free blackboard sassafras |
| CN109203799A (en) * | 2018-11-12 | 2019-01-15 | 张红霞 | A kind of blackboard eraser for preventing chalk dust from flying upward |
| CN109760452A (en) * | 2019-03-06 | 2019-05-17 | 凡得雨 | A kind of black board eraser with chalk-dust collector |
| CN110239267A (en) * | 2019-07-03 | 2019-09-17 | 湖北工程职业学院 | A kind of blackboard eraser adsorbing chalk dust |
| CN111216476A (en) * | 2020-01-21 | 2020-06-02 | 吴小花 | Blackboard eraser with self-dust-collection cleaning function |
| CN210851816U (en) * | 2019-06-11 | 2020-06-26 | 沈阳师范大学 | Surrounding type dust-absorbing blackboard eraser |
-
2020
- 2020-09-28 CN CN202011040753.7A patent/CN112123979B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203600854U (en) * | 2013-10-29 | 2014-05-21 | 张素颖 | Environment-friendly blackboard eraser |
| CN203752757U (en) * | 2013-12-04 | 2014-08-06 | 廖娅 | Blackboard eraser with dust absorption air bag |
| CN206826265U (en) * | 2017-03-22 | 2018-01-02 | 长江师范学院 | Roller type dust-free blackboard sassafras |
| CN109203799A (en) * | 2018-11-12 | 2019-01-15 | 张红霞 | A kind of blackboard eraser for preventing chalk dust from flying upward |
| CN109760452A (en) * | 2019-03-06 | 2019-05-17 | 凡得雨 | A kind of black board eraser with chalk-dust collector |
| CN210851816U (en) * | 2019-06-11 | 2020-06-26 | 沈阳师范大学 | Surrounding type dust-absorbing blackboard eraser |
| CN110239267A (en) * | 2019-07-03 | 2019-09-17 | 湖北工程职业学院 | A kind of blackboard eraser adsorbing chalk dust |
| CN111216476A (en) * | 2020-01-21 | 2020-06-02 | 吴小花 | Blackboard eraser with self-dust-collection cleaning function |
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| CN112123979A (en) | 2020-12-25 |
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