CN210502027U

CN210502027U - Dustless blackboard eraser

Info

Publication number: CN210502027U
Application number: CN201920409914.1U
Authority: CN
Inventors: 于力; 李峰; 葛子荻; 宫婷
Original assignee: Shenyang Institute of Engineering
Current assignee: Shenyang Institute of Engineering
Priority date: 2019-03-28
Filing date: 2019-03-28
Publication date: 2020-05-12
Anticipated expiration: 2029-03-28

Abstract

The utility model discloses a dustless blackboard eraser, include: a shell, a first movable cover, a base plate, a foam plate, a sponge layer, a flannelette layer, a sleeve, a diversion column, a water storage tank and a diversion pipe, the first movable cover is arranged on the shell, the base plate is arranged in the shell, the foam plate is arranged in the shell, the sponge layer is arranged in the shell, the flannelette layer is pasted on the sponge layer, the sleeve is arranged on the base plate, the water storage tank is clamped in the sleeve, the water conduit is arranged in the sleeve, the top end of the water diversion column is connected with the bottom end of the water storage tank, the water diversion column is arranged below the water storage tank and is connected with the water diversion pipe, the bottom end of the device is pasted on a flannelette layer, the utility model relates to the technical field of teaching appliances, the device has reasonable design, the use method is simple and convenient for operation, the blackboard eraser can adsorb chalk dust in an environment-friendly and effective manner, and cannot influence subsequent writing effect and student reading effect after being used.

Description

Dustless blackboard eraser

Technical Field

The utility model relates to a teaching aid technical field specifically is a dustless blackboard eraser.

Background

The blackboard writing work is inevitable in the teacher industry, the harm of the chalk dust to the health of a teacher becomes an urgent problem to be solved since a long time ago, the teacher often needs to write and draw on a blackboard for explanation, the chalk dust is erased for several times in a class, the traditional chalk eraser can not adsorb the chalk dust, a large amount of the chalk dust floating in the air and falling down is generated, the main component of the chalk is gypsum which is harmless to a human body in a small amount, most of the chalk dust is blocked by vibrissa, pharynx and larynx when the chalk is inhaled into the body through nostrils, and the chalk dust is attached to small air passages and alveoli in a small amount, but if the chalk dust is inhaled in a large amount for a long time, the chalk dust is stored too much, and diseases of the positions of the nose, the pharynx and;

the use of chalk can produce a large amount of dusts in traditional teaching process, bring huge harm for mr and classmates' health, the mr uses the chalk for a long time, can inhale a large amount of dusts, be liable to respiratory disease, and the student waits for a long time in the classroom that has the dust, can receive the secondary harm of dust, technical development along with multi-media, the classroom can not rely on the blackboard, but the convenient characteristics of writing of blackboard still are indispensable teaching aid in the classroom, in view of this, to above-mentioned problem deep research, it produces to carry out the present case.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a dustless blackboard eraser has solved the use of current teaching in-process chalk and can produce a large amount of dusts, brings huge harm for mr and classmates' health, and mr uses the chalk for a long time, can inhale a large amount of dusts, and the respiratory disease is liable to, and the student is treated for a long time in the classroom that has the dust moreover, can receive the problem of the secondary harm of dust.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a dust-free blackboard eraser mainly comprises: the device comprises a shell, a first movable cover, a base plate, a foam plate, a sponge layer, a flannelette layer, a sleeve, a diversion column, a water storage tank and a diversion pipe, wherein the first movable cover is arranged on the shell, and is movably connected with the base plate, the base plate is arranged in the shell and is horizontally connected with the upper wall surface of the shell, the foam plate is arranged in the shell, and is positioned between the substrate and the upper wall surface of the shell, the sponge layer is arranged in the shell and is connected with the bottom end of the substrate, the flannelette layer is pasted on the sponge layer, the periphery of the sleeve is clamped in the shell, the sleeve is arranged on the base plate, penetrates through the base plate and is vertical to the base plate, the water storage tank is clamped in the sleeve, the water conduit is arranged in the sleeve, the top end of the water diversion column is connected with the bottom end of the water storage tank, the water diversion column is arranged below the water storage tank and is connected with the water diversion pipe, and the bottom end of the water diversion column is pasted on the flannelette layer.

Preferably, the top end of the water storage tank is provided with a second movable cover, the second movable cover is movably connected with the top end of the water storage tank, and the bottom end of the second movable rod is provided with a sealing gasket used for sealing.

Preferably, the top end of the shell is provided with an adsorption pad which is of a rectangular structure and has the same size with the upper wall surface of the shell, and the adsorption pad is used for adsorption.

Preferably, the outer side of the side wall surface of the shell is provided with a non-slip pad for preventing slipping, and in the using process, the non-slip pad can increase the friction force between the blackboard eraser and a hand and prevent the blackboard eraser from falling off in the using process.

Preferably, be equipped with the isolation layer on the sponge layer, this isolation layer subsides are applied around the sponge layer, prevent the intraformational moisture evaporation of sponge, be equipped with the same isolation layer on the drainage post, and apply around the drainage post, slow down the absorption of sponge layer to moisture.

Preferably, a plurality of first through holes with the same structure are formed in the substrate, second through holes matched with the first through holes in the substrate are formed in the foam board, the sleeve is of a cylindrical cavity structure, an annular convex block is arranged at the bottom end of the sleeve, and the convex block is used for clamping the water storage tank.

Advantageous effects

The utility model provides a dust-free blackboard eraser. The method has the following beneficial effects: this dustless blackboard eraser reasonable in design, application method is simple to be convenient for operate, can make the blackboard eraser environmental protection effectual adsorb the chalk dust, and can not exert an influence to follow-up writing effect and student's reading effect after using, the use of having solved traditional teaching in-process chalk can produce a large amount of dusts, the health of giving mr and classmates brings huge harm, mr uses the chalk for a long time, can inhale a large amount of dusts, be liable to respiratory disease, and the student waits for a long time in the classroom that has the dust, can receive the problem of the secondary harm of dust.

Drawings

Fig. 1 is a schematic view of a structure of a dust-free blackboard eraser.

Fig. 2 is the utility model relates to a dustless blackboard eraser looks sideways at schematic diagram.

Fig. 3 is a schematic view of a top view structure of a dust-free blackboard eraser of the present invention.

In the figure: 1. a housing; 2. a first movable cover; 3. a substrate; 4. a foam board; 5. a sponge layer; 6. a flannelette layer; 7. a sleeve; 8. a water diversion column; 9. a water storage tank; 10. a water conduit; 11. A second movable cover; 12. a gasket; 13. an adsorption pad; 14. a non-slip mat; 15. and an insulating layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The following is a description of the shapes and materials of the substrate and the sleeve in this case;

substrate: the substrate is made of rigid plastic materials, is rectangular, is internally provided with a plurality of through holes with the same structure, has the size equal to the outer diameter of the sleeve, and is connected with the inner wall surface of the shell.

Sleeving a sleeve: the sleeve is made of stainless steel, is of a cylindrical cavity structure, is provided with an annular bump at the bottom end, is arranged inside the shell, penetrates through the substrate and is vertical to the substrate.

The following working principles, detailed connecting means thereof, and the following main descriptions of the working principles and processes are well known in the art, and will be referred to by those skilled in the art for the specific connection and operation sequence of the components in this application.

Example (b): the utility model provides a technical scheme: according to the attached figures 1-3 of the specification, the dust-free blackboard eraser mainly comprises: casing 1, first movable cover 2, base plate 3, cystosepiment 4, sponge layer 5, flannelette layer 6, sleeve pipe 7, drainage post 8, catch basin 9 and leading water pipe 10, the relation of connection is as follows:

the first movable cover 2 is installed on the shell 1 and movably connected with the first movable cover, the substrate 3 is installed inside the shell 1 and horizontally connected with the upper wall face of the first movable cover, the foam board 4 is installed inside the shell 1 and located between the substrate 3 and the upper wall face of the shell 1, the sponge layer 5 is installed inside the shell 1 and connected with the bottom end of the substrate 3, the flannelette layer 6 is attached to the sponge layer 5, the periphery of the flannelette layer is clamped in the shell 1, the sleeve 7 is installed on the substrate 3 and penetrates through the substrate 3 and is in a vertical state, the water storage groove 9 is clamped inside the sleeve 7, the water guide pipe 10 is installed inside the sleeve 7, the top end of the water guide pipe is connected with the bottom end of the water storage groove 9, the water guide column 8 is installed below the water storage groove 9 and connected with the water guide pipe 10.

According to the general conditions, when the blackboard eraser is used, the sleeve 7 is fixed through the base plate 3 arranged in the shell 1, water is stored through the water storage tank 9, the water in the water storage tank 9 is drained to the water drainage column 8 through the water conduit 10 arranged at the bottom end of the water storage tank 9, the water is conveyed to the surface of the flannelette layer 6 through the water drainage column 8, powder is prevented from flying when the blackboard eraser is used for wiping the blackboard, the blackboard eraser can adsorb chalk dust in an environment-friendly and effective manner, after the water in the water storage tank 9 is used up, the first movable cover 2 can be opened and taken out for adding water, or the first movable cover 2 is opened and then water is directly injected into the water storage tank 9, through the sponge layer 5 arranged in the shell 1, the subsequent writing effect and the reading effect of students cannot be influenced after the blackboard eraser is used, and the problem that a large amount of chalk dust can be generated in the traditional teaching process is solved, the dust-absorbing chalk brings great harm to health of teachers and students, the teachers can absorb a large amount of dust when using the chalk for a long time, respiratory diseases are prone to being caused, and students can be subjected to secondary harm of the dust when waiting in a dust classroom for a long time.

Preferably, a second movable cover 11 is arranged at the top end of the water storage tank 9, the second movable cover 11 is movably connected with the top end of the water storage tank 9, and a sealing gasket 12 is arranged at the bottom end of the second movable rod, and the sealing gasket 12 is used for sealing.

Preferably, an absorbing pad 13 is further disposed at the top end of the casing 1, the absorbing pad 13 has a rectangular structure and has the same size as the upper wall surface of the casing 1, and the absorbing pad 13 is used for absorbing, so that the blackboard eraser can be placed on a blackboard or other positions.

Preferably, a non-slip mat 14 is further arranged on the outer side of the side wall surface of the casing 1, the non-slip mat 14 is used for preventing slipping, and during use, the non-slip mat 14 can increase the friction force between the blackboard eraser and a hand and prevent the blackboard eraser from falling off during use.

As preferred scheme, further, be equipped with isolation layer 15 on the sponge layer 5, this isolation layer 15 pastes around sponge layer 5, prevents the evaporation of water in the sponge layer 5, is equipped with the same isolation layer 15 on the drainage post 8, and pastes around drainage post 8, slows down the absorption of sponge layer 5 to moisture.

As an optimized scheme, furthermore, a plurality of first through holes with the same structure are formed in the substrate 3, a second through hole matched with the first through hole in the substrate 3 is formed in the foam plate 4, the sleeve 7 is in a cylindrical cavity structure, and an annular convex block is arranged at the bottom end of the sleeve and used for clamping the water storage tank 9.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A dust-free blackboard eraser mainly comprises: the water storage device comprises a shell (1), a first movable cover (2), a base plate (3), a foam plate (4), a sponge layer (5), a flannelette layer (6), a sleeve (7), a water diversion column (8), a water storage tank (9) and a water diversion pipe (10), and is characterized in that the first movable cover (2) is installed on the shell (1) and movably connected with the shell, the base plate (3) is installed inside the shell (1) and horizontally connected with the upper wall surface of the base plate, the foam plate (4) is installed inside the shell (1) and positioned between the base plate (3) and the upper wall surface of the shell (1), the sponge layer (5) is installed inside the shell (1) and connected with the bottom end of the base plate (3), the flannelette layer (6) is pasted on the sponge layer (5), the periphery of the foam plate is clamped in the shell (1), the sleeve (7) is installed on the base plate (3) and penetrates through the base plate (3), and is the vertical state rather than with, catch basin (9) clamp is inside sleeve pipe (7), leading water pipe (10) are installed in sleeve pipe (7), and its top is connected with catch basin (9) bottom, drainage post (8) are installed in catch basin (9) below, and are connected with leading water pipe (10), and its bottom pastes and applies on flannelette layer (6).

2. A dust-free blackboard eraser according to claim 1, wherein the top end of the water storage tank (9) is provided with a second movable cover (11), the second movable cover (11) is movably connected with the top end of the water storage tank (9), the bottom end of the second movable rod is provided with a sealing gasket (12), and the sealing gasket (12) is used for sealing.

3. A blackboard eraser as claimed in claim 1, characterized in that the top of the casing (1) is provided with an absorbing pad (13), the absorbing pad (13) is rectangular and has the same size as the upper wall of the casing (1), and the absorbing pad (13) is used for absorbing.

4. A dust-free blackboard eraser according to claim 1, wherein the outer side of the side wall surface of the casing (1) is provided with a non-slip pad (14), the non-slip pad (14) is used for preventing slipping, and during use, the non-slip pad (14) can increase the friction force between the blackboard eraser and the hand and prevent the blackboard eraser from falling off during use.

5. The dust-free blackboard eraser according to claim 1, wherein the sponge layer (5) is provided with an isolation layer (15), the isolation layer (15) is attached around the sponge layer (5) to prevent water in the sponge layer (5) from evaporating, the same isolation layer (15) is provided on the water diversion column (8) and is attached around the water diversion column (8) to slow down the absorption of water by the sponge layer (5).

6. The dust-free blackboard eraser as claimed in claim 1, wherein the base plate (3) is provided with a plurality of first through holes with the same structure, the foam plate (4) is provided with second through holes matched with the first through holes on the base plate (3), the sleeve (7) is in a cylindrical cavity structure, and the bottom end of the sleeve is provided with an annular projection which is used for clamping the water storage tank (9).