CN212555627U

CN212555627U - Separable electric dust-absorbing blackboard eraser

Info

Publication number: CN212555627U
Application number: CN202021138330.4U
Authority: CN
Inventors: 张一杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-18
Filing date: 2020-06-18
Publication date: 2021-02-19
Anticipated expiration: 2030-06-18

Abstract

The utility model discloses a separable electric dust-absorbing blackboard eraser, which comprises a dust-absorbing device and a dust-collecting device which are arranged on the blackboard eraser; a through hole penetrating through the blackboard eraser is formed in the center of the blackboard eraser; the dust collection device comprises a dust collection box, wherein a groove and a through groove penetrating through the dust collection box are formed in the dust collection box; an exhaust fan for pumping away dust is arranged in the through groove and connected with the battery arranged in the groove; the inner wall of the through groove is provided with filter cotton for adsorbing dust; a switch and an exhaust hole communicated with the through groove are arranged on the side wall of the dust collection box, and the switch is connected with the battery; the three sides of the base are all provided with inverted edges, and the size of the base is matched with the blackboard eraser. The utility model has compact structure, small volume and light weight, realizes dust collection and removal by generating negative pressure effect through the high-speed rotation of the exhaust fan, and solves the pollution problem of chalk dust; the utility model discloses blackboard eraser and dust extraction can dismantle the separation, and the blackboard eraser of dismantlement can the exclusive use, and is nimble convenient.

Description

Separable electric dust-absorbing blackboard eraser

Technical Field

The utility model relates to a teaching aid technical field especially relates to a separable electric dust absorption blackboard eraser.

Background

The blackboard eraser is a tool commonly used in the teaching process, and dust generated in the process of erasing the blackboard by using the blackboard eraser flies, so that the teaching environment is seriously influenced, and the human health is harmed. In order to solve the problem, people use an electric dust-absorbing blackboard eraser to wipe the blackboard so as to reduce dust flying. At present, an existing electric dust collection blackboard eraser generally comprises a blackboard eraser and an electric dust collector, wherein a dust collection cavity is formed in the blackboard eraser and is connected with the electric dust collector fixed on the ground or a wall. However, such an electric dust collection blackboard eraser is generally large in size and heavy, dust of the blackboard eraser is collected through the electric dust collector, noise is large, energy consumption is high, use is inconvenient, the blackboard eraser cannot be detached to be used alone, and flexibility is poor.

Disclosure of Invention

The utility model provides a technical problem provide a separable electric dust absorption blackboard eraser, compact structure, small, light in weight can effectively absorb dust, and the separation can be dismantled with dust extraction to the blackboard eraser, and is nimble convenient, and the practicality is strong.

The utility model discloses a realize through following technical scheme:

a separable electric dust-absorbing blackboard eraser comprises a dust-absorbing device and a dust-collecting device which are arranged on the blackboard eraser;

a through hole penetrating through the blackboard eraser is formed in the center of the blackboard eraser;

the dust collection device comprises a dust collection box arranged on the base, and a groove and a through groove penetrating through the dust collection box are formed in the dust collection box; the through groove corresponds to the through hole in position; an exhaust fan for pumping away dust is arranged in the through groove and connected with the battery arranged in the groove; the inner wall of the through groove is provided with filter cotton for adsorbing dust; a switch and an exhaust hole communicated with the through groove are arranged on the side wall of the dust collection box, and the switch is connected with the battery; the three sides of the base are provided with inverted edges, and the size of the base is matched with that of the blackboard eraser;

the dust collecting device comprises a dust collecting box and a cover plate; the center of the dust collecting box is provided with a dust collecting hole which penetrates through the dust collecting box, and the dust collecting hole corresponds to the through groove; the dust collecting box is communicated with the blackboard eraser through the dust collecting hole and the through groove respectively;

a first slideway is arranged on the outer side wall above the dust collection box, and a first sliding rail matched with the first slideway is arranged on the inner side wall of the dust collection box; a second slide rail is arranged on the outer side wall of the dust collecting box, and a second slide rail is arranged on the inner side wall of the cover plate; the tail part of the cover plate is provided with a blocking plate for preventing the cover plate from sliding out.

Furthermore, the through hole is internally provided with cylindrical filter cotton.

Furthermore, the center of the dust collection box is provided with a through groove which penetrates through the dust collection box, the cross section of the through groove is circular, and the groove is formed in the side of the through groove.

Furthermore, a storage groove for placing teaching articles is arranged in the dust collection box.

Further, the article placing groove and the groove are symmetrical about the through groove.

Further, the length of the base is larger than that of the dust collection box.

Furthermore, a graduated scale is arranged on the inverted edge of the base.

Compared with the prior art, the utility model discloses following profitable technological effect has:

the utility model discloses a separable electric dust-absorbing blackboard eraser, which comprises a dust-absorbing device and a dust-collecting device which are arranged on the blackboard eraser, wherein the center of the blackboard eraser is provided with a through hole, a dust-absorbing box of the dust-absorbing device is internally provided with a through groove for placing an air exhauster, and the inner wall of the through groove is provided with filter cotton for absorbing dust; when a user wipes a blackboard, the air exhauster is started by the starting switch, dust is sucked to the through hole by the air exhauster, the dust enters the through groove of the dust collection box through the through hole, most of dust is adsorbed by the filter cotton on the inner wall of the through groove, and redundant dust is collected in the dust collection box and is exhausted from the exhaust hole.

The utility model has compact structure, small volume and light weight, effectively absorbs dust through the exhaust fan, reduces the pollution of dust to the environment and realizes the collection of dust; the blackboard eraser is connected with the base of the dust collection device in a nested manner, and the blackboard eraser and the dust collection device can be detached and separated conveniently; the blackboard eraser that dismantles can use alone, and the flexibility is strong. In addition, the dust collecting box is connected with the dust suction box through the first slide rail in a matched mode, so that the dust collecting box is more convenient to disassemble, and a user can clean dust in the dust collecting box in time. The utility model discloses a separable electric dust absorption blackboard eraser has overcome current electric dust absorption blackboard eraser bulky, operate inconvenient, function singleness, the difficult popularization of price etc. not enough, has also fused the function such as accomodating, measuring of teaching articles for use simultaneously, has improved the teaching practicality of blackboard eraser.

Drawings

FIG. 1 is a schematic structural view of the separable electric dust-absorbing blackboard eraser of the present invention;

FIG. 2 is a top view of the dust-absorbing device of the detachable electric dust-absorbing blackboard eraser of the present invention;

fig. 3 is a schematic structural view of the dust collecting device of the detachable electric dust-absorbing blackboard eraser of the present invention.

The blackboard eraser comprises a blackboard eraser body 1, a dust collecting device 2, a dust collecting device 3, a through hole 4, a base 5, a dust collecting box 6, a through groove 7, a groove 8, an exhaust fan 9, a battery 10, a dust collecting box 11, a cover plate 12, a first slide rail 13, a second slide rail 14, a stop plate 15, a reverse edge 16, a dust collecting hole 17, an object placing groove 18, a graduated scale 19, an exhaust hole 20 and a switch 21.

Detailed Description

The present invention will now be described in further detail with reference to the attached drawings, which are provided for purposes of illustration and not limitation.

Referring to fig. 1, 2 and 3, a detachable electric dust-absorbing blackboard eraser includes a dust-absorbing device 2 and a dust-collecting device 3 disposed on a blackboard eraser 1;

a through hole 4 penetrating through the blackboard eraser 1 is arranged in the center of the blackboard eraser 1;

the dust collection device 2 comprises a dust collection box 6 arranged on a base 5, and a groove 8 and a through groove 7 penetrating through the dust collection box 6 are formed in the dust collection box 6; the through groove 7 corresponds to the through hole 4; an exhaust fan 9 for pumping away dust is arranged in the through groove 7, and the exhaust fan 9 is connected with a battery 10 arranged in the groove 8; the inner wall of the through groove 7 is provided with filter cotton for absorbing dust; the side wall of the dust collection box 6 is provided with an exhaust hole 20 communicated with the through groove 7; the three sides of the base 5 are provided with inverted edges 16, and the size of the base 5 is matched with that of the blackboard eraser 1;

the dust collecting device 3 comprises a dust collecting box 11 and a cover plate 12; the center of the dust collecting box 11 is provided with a dust collecting hole 17 which penetrates through the dust collecting box 11, and the dust collecting hole 17 corresponds to the position of the through groove 7; the dust collecting box 11 is respectively communicated with the blackboard eraser 1 through a dust collecting hole 17 and a through groove 7;

a first slideway 13 is arranged on the outer side wall above the dust collection box 6, and a first slide rail matched with the first slideway 13 is arranged on the inner side wall of the dust collection box 11; a second slideway 14 is arranged on the outer side wall of the dust collection box 11, and a second slide rail is arranged on the inner side wall of the cover plate 12; the tail part of the cover plate 12 is provided with a blocking plate 15 for preventing the cover plate 12 from sliding out.

Specifically, the utility model discloses a blackboard eraser 1 adopts current wooden base plate wool felt blackboard eraser, puts the through-hole 4 of seting up a link up blackboard eraser 1 at blackboard eraser 1's central point for establish the air duct of air exhauster 9 dust absorption. When air carrying dust enters the through groove 7 of the dust collection box 6 from the blackboard eraser 1 and is discharged through the exhaust hole 20, a part of dust stays in a felt gap of the blackboard eraser 1, a part of dust is adsorbed in filter cotton in the through groove 7, and redundant dust is collected in the dust collection box 11, so that the purpose of dust collection is achieved. The diameter of the through hole 4 is 35mm, and in order to reduce wind loss and improve dust passing efficiency, the height of the wool felt of the existing blackboard eraser can be reduced by half, and the height of the wool felt is controlled to be about 10 mm. The wool felt height of the blackboard eraser 1 is reduced by half, the use of raw materials can be reduced, the environment is protected, the materials are saved, and the production cost of the blackboard eraser 1 is saved.

The dust collection box 6 is a closed cuboid box, a groove 8 and a through groove 7 penetrating through the dust collection box 6 are formed in the dust collection box 6, the through groove 7 is arranged at the center of the dust collection box 6, and the groove 8 and the through groove 7 are arranged in a straight line; the cross section of the through groove 7 is circular, and the through groove 7 is internally provided with cylindrical filter cotton for adsorbing dust sucked into the through groove 7 by the exhaust fan 9. The inner diameter of the through groove 7 is 47mm, the height of the through groove 7 is 30mm, the exhaust fan 9 is a miniature exhaust fan with the model of LH110-13W, the exhaust fan 9 is installed in the through groove 7, air with dust is sucked into the through groove 7 through the exhaust fan 9 from the through hole 4, most of the dust is adsorbed by the filter cotton, and redundant dust enters the dust collection box 11 to be collected. A battery 10 connected with the exhaust fan 9 is arranged in the groove 8 beside the through groove 7, and the battery 10 can be a rechargeable battery. The dust collecting box 11 is connected with the dust collecting box 6 through the first slideway 13, the diameter of a dust collecting hole 17 in the dust collecting box 11 is 5mm, the dust collecting hole 17 is communicated with the through groove 7 of the dust collecting box 6, an exhaust hole 20 communicated with the through groove 7 is formed in the side wall of the dust collecting box 6, and the exhaust hole 20 is a rectangular exhaust hole 20 with the diameter of 1mm x 55 mm. The dust collecting box 11 and the cover plate 12 are connected in a matched mode through the second sliding rail and the second sliding groove, the cover plate 12 can be detached at any time, and a user can conveniently maintain the dust collecting device 2 and clean dust of the dust collecting box 11.

Specifically, the base 5 and the dust collection box 6 are integrally formed, and the structure is compact. Three side edges of the base 5 are provided with inverted edges 16, one side edge is provided with an opening, a user nests the blackboard eraser 1 in the base 5 through one side of the opening of the base 5, and the blackboard eraser 1 and the dust collection device 2 can be conveniently disassembled and assembled by pushing and pulling; when the battery 10 is insufficient in power, the user can disassemble the blackboard eraser 1 for independent use, so that the blackboard eraser is more flexible and convenient. The dust suction device 2 and the dust collecting device 3 of the utility model can be made of aluminum alloy material or PC material. The battery 10 adopts a rechargeable lithium battery to circularly supply power, can be continuously used for nearly 20 minutes after being charged once, completely meets the daily teaching requirement, and is low in energy consumption, safe and environment-friendly.

Further, the center of the dust collection box 6 is provided with a through groove 7 which runs through the dust collection box 6, the cross section of the through groove 7 is circular, and the groove 8 is arranged at the side of the through groove 7.

Furthermore, a storage groove 18 for storing teaching articles, such as a pin, a clip, a magnetic button, a sponge and other small teaching articles, is further formed in the dust collection box 6.

Further, the storage groove 18 and the groove 8 are symmetrical about the through groove 7.

Further, the length of the base 5 is greater than that of the dust collection box 6.

Furthermore, a graduated scale 19 is arranged on the inverted edge 16 of the base 5, and the graduated scale 19 is a centimeter graduated scale, so that the teacher can conveniently measure and draw pictures in a classroom.

Specifically, the operating voltage of the exhaust fan 9 is 7v, and the rotating speed is about 4000 rpm. When the distance between the ears of a person and the exhaust fan 9 is about 50cm, the noise of the fan is about 40 decibels, and the normal communication of the person is not influenced. Adopt the utility model discloses carry out the simulation experiment, use wastepaper test wind-force, work as the utility model discloses when 10mm apart from wastepaper, wastepaper is adsorbed very fast on blackboard eraser 1. 10g flour test, when the utility model discloses when 10mm apart from flour, flour is by whole suction air exhauster 9 very fast in, partly stops in the felted wool clearance of blackboard eraser 1, and partly is collected in leading to the filter pulp of inslot 7, and a small part is collected in dust collection box 11. Through using the utility model discloses, with blackboard, chalk simulation on-the-spot teaching environment, the condition that dust flies in disorder in the blackboard erasing process is obviously improved.

The utility model discloses a high-speed rotatory negative pressure effect that produces of air exhauster 9 realizes dust absorption, removes dust, has solved the pollution problem of chalk dust. The utility model discloses can not only assist blackboard eraser 1 to realize dust absorption, remove dust, it has still integrated accomodate teaching articles for use, has provided the 19 measuring functions of scale, richenes and has improved blackboard eraser 1's practicality. The utility model has compact structure, small volume, light weight, and easy carrying and operation; the blackboard eraser 1 is arranged on the base 5 in a nested mode, so that the blackboard eraser 1 can be conveniently disassembled and assembled, the blackboard eraser 1 can be used independently, and the blackboard eraser can be used together with the dust collection device 2, and is high in flexibility.

According to the technical scheme, the utility model provides a separable electric dust collection blackboard eraser, which comprises a dust collection device 2 and a dust collection device 3 which are arranged on a blackboard eraser 1, wherein a through hole 4 is arranged at the center of the blackboard eraser 1, a through groove 7 for placing an exhaust fan 9 is arranged in a dust collection box 6 of the dust collection device 2, and filter cotton for absorbing dust is arranged on the inner wall of the through groove 7; when a user wipes a blackboard, the starting switch 21 starts the exhaust fan 9, the exhaust fan 9 sucks dust to the through hole 4, the dust enters the through hole 7 of the dust collection box 6 through the through hole 4, most of dust is adsorbed by the filter cotton on the inner wall of the through hole 7, and redundant dust is collected in the dust collection box 11 and is exhausted from the exhaust hole 20.

The utility model discloses compact structure, small, light in weight through the effective dust absorption of air exhauster 9, has alleviateed the pollution of dust to the environment, has realized the collection of dust. The blackboard eraser 1 is connected with the base 5 of the dust suction device 2 in a nested manner, the blackboard eraser 1 and the dust suction device 2 can be detached and separated, the detachment is convenient, the detached blackboard eraser can be used independently, and the flexibility is strong. In addition, the dust collecting box 11 is connected with the dust collecting box 6 through the first slide way 13 and the first slide rail in a matching manner, so that the dust collecting box 11 is more convenient to disassemble, and a user can clean dust in the dust collecting box 11 in time. The utility model discloses a separable electric dust absorption blackboard eraser has overcome current electric dust absorption blackboard eraser bulky, operate inconvenient, function singleness, the difficult popularization of price etc. not enough, has also fused the function such as accomodating, measuring of teaching articles for use simultaneously, has improved the teaching practicality of blackboard eraser.

The embodiments given above are preferred examples for implementing the present invention, and the present invention is not limited to the above-described embodiments. Any non-essential addition and replacement made by the technical features of the technical solution of the present invention by those skilled in the art all belong to the protection scope of the present invention.

Claims

1. A separable electric dust collection blackboard eraser is characterized by comprising a dust collection device (2) and a dust collection device (3) which are arranged on a blackboard eraser (1);

a through hole (4) penetrating through the blackboard eraser (1) is arranged in the center of the blackboard eraser (1);

the dust collection device comprises a dust collection box (6) arranged on a base (5), wherein a groove (8) and a through groove (7) penetrating through the dust collection box (6) are formed in the dust collection box (6); the through groove (7) corresponds to the through hole (4); an exhaust fan (9) for sucking dust is arranged in the through groove (7), and the exhaust fan (9) is connected with a battery (10) arranged in the groove (8); the inner wall of the through groove (7) is provided with filter cotton for absorbing dust; a switch (21) and an exhaust hole (20) communicated with the through groove (7) are arranged on the side wall of the dust collection box (6), and the switch (21) is connected with the battery (10); inverted edges (16) are arranged on three side edges of the base (5), and the size of the base (5) is matched with that of the blackboard eraser (1);

the dust collecting device comprises a dust collecting box (11) and a cover plate (12); the center of the dust collecting box (11) is provided with a dust collecting hole (17) which penetrates through the dust collecting box (11), and the position of the dust collecting hole (17) corresponds to that of the through groove (7); the dust collecting box (11) is communicated with the blackboard eraser (1) through a dust collecting hole (17) and a through groove (7) respectively;

a first slideway (13) is arranged on the outer side wall above the dust collection box (6), and a first slide rail matched with the first slideway (13) is arranged on the inner side wall of the dust collection box (11); a second slideway (14) is arranged on the outer side wall of the dust collection box (11), and a second slide rail is arranged on the inner side wall of the cover plate (12); the tail part of the cover plate (12) is provided with a blocking plate (15) for preventing the cover plate (12) from sliding out.

2. The separable electric dust collection blackboard eraser according to claim 1, wherein a through slot (7) penetrating through the dust collection box (6) is formed in the center of the dust collection box (6), the cross section of the through slot (7) is circular, and the groove (8) is formed at the side of the through slot (7).

3. The separable electric dust collection blackboard eraser as claimed in claim 1, wherein the dust collection box (6) is further provided with a storage groove (18) for storing teaching articles.

4. The detachable electric dust-absorbing blackboard eraser according to claim 3, wherein the storage groove (18) and the groove (8) are symmetrical about the through groove (7).

5. The detachable electric dust-absorbing blackboard eraser according to claim 1, wherein the length of the base (5) is greater than that of the dust-absorbing box (6).

6. The detachable electric dust-absorbing blackboard eraser according to claim 1, wherein the inverted edge (16) of the base (5) is provided with a graduated scale (19).