CN111976342A - Blackboard with cleaning and dust removing functions - Google Patents
Blackboard with cleaning and dust removing functions Download PDFInfo
- Publication number
- CN111976342A CN111976342A CN201910426757.XA CN201910426757A CN111976342A CN 111976342 A CN111976342 A CN 111976342A CN 201910426757 A CN201910426757 A CN 201910426757A CN 111976342 A CN111976342 A CN 111976342A
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- China
- Prior art keywords
- blackboard
- dust
- lead screw
- blackboard eraser
- mounting groove
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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
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/04—Blackboards
-
- 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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- Drawing Aids And Blackboards (AREA)
Abstract
The invention discloses a blackboard with cleaning and dust removing functions, which belongs to the field of teaching and comprises a base, a blackboard, a lead screw, a dust removing blackboard eraser, a motor, a lead screw nut seat, a connecting rod and a supporting seat, wherein the lead screw nut seat is arranged on the base; the connecting device is connected with the supporting seat above the base, the blackboard is installed above the supporting seat, the two sides of the blackboard are respectively and integrally connected with the mounting groove, a lead screw with one end fixed at the top of the mounting groove through the mounting seat is arranged in the mounting groove of each side, the other end of the lead screw penetrates through the bottom of the mounting groove and is connected with a motor positioned outside the mounting groove, a lead screw nut seat is installed on the lead screw of each side in a matched mode, the lead screw nut seats of the two sides are connected through a connecting rod, the dust removal blackboard eraser is installed on the connecting rod, and the brush surface of the dust removal blackboard eraser is closely attached to the blackboard surface and. The dust removal blackboard eraser is driven by the lead screw transmission device to move up and down on the blackboard to realize cleaning and dust removal.
Description
Technical Field
The invention belongs to the technical field of teaching aids, and particularly relates to a blackboard with cleaning and dust removing functions.
Background
Chalks are widely used in daily life and are generally used for writing on blackboards. Ancient chalks are usually made of natural chalk, but nowadays they are frequently replaced by other substances. The chalk is a white precipitate of calcium sulfate, which is not easily decomposed and has larger particles than dust. Through the test, the concentration of the chalk dust in the classroom is 1.82-21.7 mg/m3The concentration is higher than 10mg/m of the operation site3The concentration of the teacher's operation point and the front row of the classroom is obviously higher than that of the middle row and the rear row. The measurement result of the dispersion degree shows that the dispersion degree of the chalk dust is higher, the particles with the particle size less than 5um at the teacher's working point account for 7215 percent, and the front row is positionedThe degree of dispersion of chalk dust at the middle row position is higher than that at the platform, and the particles smaller than 5um almost reach 90 percent of the total dust particles.
Teachers often need to write and draw on blackboards for explanation. The chalk is erased and written for several times in a class of 45-50 minutes, and a layer of white chalk dust is usually left on hands, sleeves, hair and shoulders when the chalk is used for class. Every day, every year, and after working for 20-30 years, tens of thousands of chalks are worn. Some chalk dust is inevitably inhaled from the nostrils. On the surface of related research, chalk dust is harmful to lung, respiratory tract, eyes, skin and ears. The most common lung is used, in the teaching process, chalk dust is easily inhaled into the lung and mostly retained in the alveolus pulmonale, and lung loss can be caused by a series of stimulation, chemical and immune effects, including respiratory system inflammation and lung ventilation function reduction, and common lung diseases include: chronic pneumonia, acute pneumonia, lung cancer, pneumoconiosis and the like (namely chalk dust contains silicon dioxide, is inhaled into the lung, and forms pulmonary fibrosis dust with over one percent of free silicon dioxide content in the lung, so that pulmonary fibrosis is caused, and the respiratory function of the lung is reduced); the chalk dust enters the lung through the upper respiratory tract including the nose, the pharynx and the bronchus, in the process, part of the dust stays in the upper respiratory tract to generate mechanical stimulation and damage to mucosal epithelial cells, and a series of pathological changes can be caused after long-term work in the environment, wherein the influence on the nose is most commonly to induce rhinitis sicca and then hypertrophic rhinitis, and the symptoms are nasal dryness, nasal obstruction, nasal mucosa congestion, secretion increase and the like; the influence on the pharynx mainly induces chronic pharyngitis, makes the pharynx dry, expectoration uncomfortable, pharyngalgia and pharynx itch; the influence on the bronchus mainly induces chronic bronchitis, sometimes causes asthma, and may also cause canceration of nasopharynx, bronchus and other parts; chalk dust falls into eyes to stimulate lacrimal gland secretion, tear hydrolyzes calcium carbonate to generate alkaline substances, and the alkaline substances can seriously stimulate eye mucosa to cause mucosa injury, form chronic inflammation and possibly induce myopia; chalk dust inevitably sticks to hands, meanwhile, particle dust floating in the air also falls on the hair, face and neck of a teacher, has stimulation effect on skin membranes, if the chalk dust is hydrolyzed by sweat in summer, alkaline substances are generated, stimulation on skin mucosa is greater, because the environment where human skin lives is a weak acid environment, the basic living environment of the skin is damaged under the alkaline effect of the dust, the chalk dust enables the skin to be dry and rough, and itching feeling is accompanied, so that the human body is uncomfortable, serious people can cause acne, folliculitis, pyoderma, skin chap and a large amount of hair to fall off, and normal work and life of the teacher are influenced and interfered; chalk dust enters the external auditory canal and is mixed in sebum to form cerumen embolism, and the cerumen embolism can cause ear inflammation for a long time.
The chalk dust not only affects the health of teachers, but also endangers the health of students in a body growing stage, so that the problem that the harm of the chalk dust to the teachers and the students is reduced is inconspicuous.
Disclosure of Invention
In order to solve the above-mentioned disadvantages of the prior art, the present invention is directed to a blackboard having cleaning and dust removing functions. The dust removal blackboard eraser is driven by the motors on the two sides to drive the screw rods on the two sides to rotate, so that the screw rod nut seats on the screw rods move up and down on the screw rods, the connecting rods also move up and down, the dust removal blackboard eraser on the connecting rods moves up and down on the blackboard, and the dust removal blackboard eraser realizes erasing blackboard writing on the blackboard due to the fact that the brush surface of the dust removal blackboard eraser is over against the blackboard surface and the brush surface of the dust removal blackboard eraser is tightly attached to the blackboard surface. The brush of the invention erases blackboard writing on the blackboard, and the dust after being erased is sucked into the dust storage box for collection through the filter screen and the clapboard with holes under the driving of the dust removal motor. The dust removal blackboard eraser is detachably mounted, so that the cleaning work of the dust removal blackboard eraser can be conveniently realized; the dust bin is designed to be removable to facilitate the removal of dust from the dust bin.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention provides a blackboard with cleaning and dust removing functions, which comprises a base, a blackboard, a lead screw, a dust removing blackboard eraser, a motor, a lead screw nut seat, a connecting rod and a supporting seat, wherein the lead screw nut seat is arranged on the base; connecting device joint support seat is passed through to the top of base the blackboard is installed to the top of supporting seat the both sides of blackboard respectively an organic whole be connected with the mounting groove, at every side be equipped with one end in the mounting groove and pass through the mount pad and fix the lead screw at mounting groove top, the other end of lead screw passes the bottom of mounting groove with be located the outside motor of mounting groove is connected, at every side lead screw is gone up the cooperation and is installed lead screw nut seat, connects through the connecting rod between the lead screw nut seat of both sides install the dust removal blackboard eraser on the connecting rod, the brush face of dust removal blackboard eraser is just right the blackboard face just closely laminates with the blackboard face.
The working principle is as follows: under the drive of the motors on the two sides, the lead screws on the two sides are driven to rotate, then the lead screw nut seats on the lead screws move up and down on the lead screws, the connecting rods also move up and down, the dust removal blackboard eraser on the connecting rods moves up and down on the blackboard, and the dust removal blackboard eraser is characterized in that the brush surface of the dust removal blackboard eraser is right opposite to the blackboard surface and the brush surface of the dust removal blackboard eraser is tightly attached to the blackboard surface, so that the blackboard writing on the blackboard is erased by the dust removal blackboard eraser.
Further preferably, dust removal blackboard eraser includes the casing, a lateral wall of casing is the opening part installation is provided with the filter screen be provided with the filtration pore on the filter screen, connect around the filtration pore and install the brush the space in filter screen inboard and the casing is separated into dust hutch and dust absorption fan install bin by foraminiferous baffle install a plurality of dust extraction from top to bottom in the dust absorption fan install bin in proper order, dust extraction is including installing dust absorption motor on the foraminiferous baffle, with dust absorption motor's motor shaft is connected with the dust absorption fan blade.
The working principle is as follows: the brush erases blackboard writing on the blackboard, and the dust after erasing is sucked into the dust storage box through the filter screen and the partition plate with holes under the driving of the dust removal motor to be collected.
Further preferably, the brushes are distributed and installed at all positions of the filter screen except the filter holes, and the installation length is equal to the length of the filter screen.
Further preferably, the dust storage box and the partition plate with the holes are detachably mounted. The dust bin is designed to be removable to facilitate the removal of dust from the dust bin.
Further preferably, the length of the dust removal blackboard eraser is equal to that of the blackboard. The blackboard can be cleaned completely.
Further preferably, both sides of the supporting seat are respectively and integrally connected with supporting plates, and the motors on both sides are placed on the supporting plates on both sides. The motor is placed on the supporting plate, so that the stability of the motor is improved.
Preferably, the upper part of the base is connected with the cylinder end of the lifting cylinder, and the piston end of the lifting cylinder is connected with the bottom of the supporting seat. The up-and-down lifting operation of the blackboard can be realized.
Further preferably, the connecting rod and the dust removal blackboard eraser are detachably mounted. The dust removal blackboard eraser is detachably mounted, and the cleaning work of the dust removal blackboard eraser can be conveniently realized.
Compared with the prior art, the invention has the following advantages:
the invention has the advantages that:
1. the dust removal blackboard eraser is driven by the motors on the two sides to drive the screw rods on the two sides to rotate, so that the screw rod nut seats on the screw rods move up and down on the screw rods, the connecting rods also move up and down, the dust removal blackboard eraser on the connecting rods moves up and down on the blackboard, and the dust removal blackboard eraser realizes erasing blackboard writing on the blackboard due to the fact that the brush surface of the dust removal blackboard eraser is over against the blackboard surface and the brush surface of the dust removal blackboard eraser is tightly attached to the blackboard surface.
2. The brush of the invention erases blackboard writing on the blackboard, and the dust after being erased is sucked into the dust storage box for collection through the filter screen and the clapboard with holes under the driving of the dust removal motor.
3. The dust removal blackboard eraser is detachably mounted, so that the cleaning work of the dust removal blackboard eraser can be conveniently realized; the dust bin is designed to be removable to facilitate the removal of dust from the dust bin.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic view showing the construction of a blackboard having cleaning and dust-removing effects according to example 1;
FIG. 2 is a schematic structural view of a blackboard having cleaning and dust removing effects according to example 2;
fig. 3 is a schematic structural view of the dust removing blackboard eraser in embodiment 1 and embodiment 2;
FIG. 4 is an enlarged schematic view of a portion of the dusting blackboard eraser of FIG. 3;
in the figure, the blackboard eraser comprises a blackboard 1, a blackboard 2, a screw rod 3, a dust removal blackboard eraser 4, a base 5, a lifting cylinder 6, a supporting plate 7, a motor 8, a screw rod nut seat 9, a connecting rod 10, a supporting seat 11, a hairbrush 12, a filter screen 13, dust collection fan blades 14, a dust collection motor 15 and a dust storage box.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Embodiment 1, a blackboard with cleaning and dust removing functions, comprising a base 4, a blackboard 1, a lead screw 2, a dust removing blackboard eraser 3, a motor 7, a lead screw nut seat 8, a connecting rod 9 and a supporting seat 10; connecting device joint support seat 10 is passed through to the top of base 4 blackboard 1 is installed to the top of supporting seat 10 the both sides of blackboard 1 respectively an organic whole be connected with the mounting groove, at every side be equipped with one end in the mounting groove and pass through the mount pad and fix the lead screw 2 at mounting groove top, the other end of lead screw 2 passes the bottom of mounting groove with be located the outside motor 7 of mounting groove is connected, at every side lead screw 2 goes up the cooperation and installs lead screw nut seat 8, connects through connecting rod 9 between the lead screw nut seat 8 of both sides install dust removal blackboard eraser 3 on the connecting rod 9, the brush face of dust removal blackboard eraser 3 is just right the blackboard face just the brush face of dust removal blackboard eraser 3 closely laminates with the blackboard face.
The working principle is as follows: under the drive of the motors 7 on the two sides, the lead screws 2 on the two sides are driven to rotate, the lead screw nut seats 8 on the lead screws 2 move up and down on the lead screws 2, the connecting rods 9 also move up and down, the dust removal blackboard eraser 3 on the connecting rods 9 moves up and down on the blackboard 1, and the blackboard eraser 3 realizes erasing blackboard writing on the blackboard due to the fact that the brush surface of the dust removal blackboard eraser 3 is right opposite to the blackboard surface and the brush surface of the dust removal blackboard eraser 3 is tightly attached to the blackboard surface.
As shown in fig. 1, in the process of moving the dust removing blackboard eraser 3 up and down, the dust removing blackboard eraser 3 is located at the middle position of the blackboard.
As shown in fig. 3 and 4, in this embodiment, the dust-removing blackboard eraser 3 includes a casing, one side wall of the casing is an opening, a filter screen 12 is installed at the opening, a filter hole is formed on the filter screen 12, a brush 11 is installed around the filter hole, a dust storage box 15 and a dust-collecting fan installation box are separated from the inner side of the filter screen 12 and the space in the casing by a partition plate with holes, a plurality of dust-collecting devices are sequentially installed in the dust-collecting fan installation box from top to bottom, each dust-collecting device includes a dust-collecting motor 14 installed on the partition plate with holes, and a dust-collecting fan 13 is connected to a motor shaft of the dust-collecting motor 14.
The working principle is as follows: the brush 11 erases the blackboard writing on the blackboard 1, and the dust after being erased is sucked into the dust storage box 15 for collection through the filter screen 12 and the partition board with holes under the driving of the dust removal motor 14.
In this embodiment, the brushes 11 are distributed and installed at all positions of the filter screen 12 except for the filter holes, and the length of the installation arrangement is equal to the length of the filter screen 12.
In this embodiment, the dust storage box 15 and the partition plate with holes are detachably mounted. The dust bin 15 is designed in a removable mode to facilitate the discharge of dust from the dust bin 15.
In this embodiment, the length of the dust-removing blackboard eraser 3 is equal to that of the blackboard 1. The overall cleaning of the blackboard 1 is realized.
In this embodiment, the supporting plates 6 are integrally connected to two sides of the supporting seat 10, and the motors 7 on two sides are placed on the supporting plates 6 on two sides. The motor 7 is placed on the supporting plate 6, so that the stability of the motor 7 is improved.
In this embodiment, the cylinder end of the lifting cylinder 5 is connected to the upper side of the base 4, and the piston end of the lifting cylinder 5 is connected to the bottom of the supporting seat 10. The up-and-down operation of the blackboard 1 can be realized.
In this embodiment, the connecting rod 8 and the dust-removing blackboard eraser 3 are detachably mounted. The dust removal blackboard eraser 3 is detachably mounted, and the cleaning work of the dust removal blackboard eraser 3 can be conveniently realized.
The working principle is as follows: under the drive of the motors 7 on the two sides, the lead screws 2 on the two sides are driven to rotate, the lead screw nut seats 8 on the lead screws 2 move up and down on the lead screws 2, the connecting rods 9 also move up and down, the dust removal blackboard eraser 3 on the connecting rods 9 moves up and down on the blackboard 1, and the blackboard eraser 3 realizes erasing blackboard writing on the blackboard due to the fact that the brush surface of the dust removal blackboard eraser 3 is right opposite to the blackboard surface and the brush surface of the dust removal blackboard eraser 3 is tightly attached to the blackboard surface.
As shown in fig. 2, in the process of moving the dust removing blackboard eraser 3 up and down, the dust removing blackboard eraser 3 is located at the bottom of the blackboard.
As shown in fig. 3 and 4, in this embodiment, the dust-removing blackboard eraser 3 includes a casing, one side wall of the casing is an opening, a filter screen 12 is installed at the opening, a filter hole is formed on the filter screen 12, a brush 11 is installed around the filter hole, a dust storage box 15 and a dust-collecting fan installation box are separated from the inner side of the filter screen 12 and the space in the casing by a partition plate with holes, a plurality of dust-collecting devices are sequentially installed in the dust-collecting fan installation box from top to bottom, each dust-collecting device includes a dust-collecting motor 14 installed on the partition plate with holes, and a dust-collecting fan 13 is connected to a motor shaft of the dust-collecting motor 14.
The working principle is as follows: the brush 11 erases the blackboard writing on the blackboard 1, and the dust after being erased is sucked into the dust storage box 15 for collection through the filter screen 12 and the partition board with holes under the driving of the dust removal motor 14.
In this embodiment, the brushes 11 are distributed and installed at all positions of the filter screen 12 except for the filter holes, and the length of the installation arrangement is equal to the length of the filter screen 12.
In this embodiment, the dust storage box 15 and the partition plate with holes are detachably mounted. The dust bin 15 is designed in a removable mode to facilitate the discharge of dust from the dust bin 15.
In this embodiment, the length of the dust-removing blackboard eraser 3 is equal to that of the blackboard 1. The overall cleaning of the blackboard 1 is realized.
In this embodiment, the supporting plates 6 are integrally connected to two sides of the supporting seat 10, and the motors 7 on two sides are placed on the supporting plates 6 on two sides. The motor 7 is placed on the supporting plate 6, so that the stability of the motor 7 is improved.
In this embodiment, the cylinder end of the lifting cylinder 5 is connected to the upper side of the base 4, and the piston end of the lifting cylinder 5 is connected to the bottom of the supporting seat 10. The up-and-down operation of the blackboard 1 can be realized.
In this embodiment, the connecting rod 8 and the dust-removing blackboard eraser 3 are detachably mounted. The dust removal blackboard eraser 3 is detachably mounted, and the cleaning work of the dust removal blackboard eraser 3 can be conveniently realized.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Other technical features than those described in the specification are known to those skilled in the art, and are not described herein in detail in order to highlight the innovative features of the present invention.
Claims (8)
1. A blackboard with cleaning and dust removing functions is characterized by comprising a base, a blackboard, a lead screw, a dust removing blackboard eraser, a motor, a lead screw nut seat, a connecting rod and a supporting seat; connecting device joint support seat is passed through to the top of base the blackboard is installed to the top of supporting seat the both sides of blackboard respectively an organic whole be connected with the mounting groove, at every side be equipped with one end in the mounting groove and pass through the mount pad and fix the lead screw at mounting groove top, the other end of lead screw passes the bottom of mounting groove with be located the outside motor of mounting groove is connected, at every side lead screw is gone up the cooperation and is installed lead screw nut seat, connects through the connecting rod between the lead screw nut seat of both sides install the dust removal blackboard eraser on the connecting rod, the brush face of dust removal blackboard eraser is just right the blackboard face just closely laminates with the blackboard face.
2. The blackboard with cleaning and dust removing functions as claimed in claim 1, wherein the dust removing blackboard eraser 3 includes a casing, a side wall of the casing is an opening, a filter screen is installed at the opening, a filter hole is formed in the filter screen, a brush is installed around the filter hole, a space inside the filter screen and inside the casing is divided into a dust storage box and a dust suction fan installation box by a partition plate with holes, a plurality of dust suction devices are sequentially installed in the dust suction fan installation box from top to bottom, each dust suction device includes a dust suction motor installed on the partition plate with holes, and a dust suction fan blade is connected to a motor shaft of the dust suction motor.
3. A blackboard having a cleaning and dust removing functions as claimed in claim 2, wherein the brushes are installed at all positions of the filter screen excluding the filtering holes in a distributed manner, and the length of the installation arrangement is equal to that of the filter screen.
4. The blackboard of claim 2, wherein the dust bin is detachably mounted to the partition with holes.
5. The blackboard having the functions of cleaning and removing dust as claimed in claim 1, wherein the length of the dust-removing blackboard eraser is equal to that of the blackboard.
6. The blackboard of claim 1, wherein the support plates are integrally connected to the two sides of the support base, and the motors are placed on the support plates.
7. The blackboard of claim 1, wherein the upper part of the base is connected to the cylinder end of the lifting cylinder, and the piston end of the lifting cylinder is connected to the bottom of the support.
8. The blackboard with the functions of cleaning and removing dust as claimed in claim 1, characterised in that the connecting rod and the dust-removing blackboard eraser are detachably mounted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910426757.XA CN111976342A (en) | 2019-05-22 | 2019-05-22 | Blackboard with cleaning and dust removing functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910426757.XA CN111976342A (en) | 2019-05-22 | 2019-05-22 | Blackboard with cleaning and dust removing functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111976342A true CN111976342A (en) | 2020-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910426757.XA Pending CN111976342A (en) | 2019-05-22 | 2019-05-22 | Blackboard with cleaning and dust removing functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111976342A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112895771A (en) * | 2021-03-30 | 2021-06-04 | 吴佳和 | Blackboard with automatic blackboard eraser |
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|---|---|---|---|---|
| JPH08276403A (en) * | 1995-04-07 | 1996-10-22 | Hitachi Koki Co Ltd | Woodworking dust collector |
| CN201231625Y (en) * | 2008-07-30 | 2009-05-06 | 温洋 | Blackboard capable of automatic clearing chalk dust |
| CN201313461Y (en) * | 2008-12-10 | 2009-09-23 | 徐州工业职业技术学院 | Blackboard eraser with dust removing function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112895771A (en) * | 2021-03-30 | 2021-06-04 | 吴佳和 | Blackboard with automatic blackboard eraser |
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