CN214383328U

CN214383328U - Powder-absorbing blackboard eraser

Info

Publication number: CN214383328U
Application number: CN202120021601.6U
Authority: CN
Inventors: 陶晨宇; 徐海玲; 樊雪平
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-01
Filing date: 2021-01-01
Publication date: 2021-10-12
Anticipated expiration: 2031-01-01

Abstract

The utility model relates to the technical field of teaching aids, and discloses a powder-absorbing blackboard eraser, which comprises a box body and a wiping part arranged on the box body, wherein an air duct is formed in the box body, the outer wall of the box body is provided with an air inlet hole, and the air inlet hole is communicated with the air duct; along the airflow direction, a filtering device and an air draft device are sequentially arranged in the air duct. The utility model has the advantages of it is following and effect: when the chalk dust absorbing type blackboard eraser is used, the wiping part is made of sponge or cloth, the air draft device runs, air flow is formed after air draft, chalk dust floating near the box body is sucked into the air channel of the box body, the chalk dust is collected to the air channel and the mounting groove after being filtered by the filtering device, and the chalk dust floating when the blackboard is wiped can be absorbed and collected.

Description

Powder-absorbing blackboard eraser

Technical Field

The utility model relates to a teaching aid technical field, in particular to inhale whitewashed formula blackboard eraser.

Background

The blackboard eraser is used as a common teaching aid, and a large amount of chalk dust is scattered into the air when the blackboard is erased, so that the environment is polluted, and the physical health of teachers and students is influenced. In view of the above, it is desirable to provide a blackboard eraser capable of absorbing and collecting chalk dust.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a powder-absorbing blackboard eraser, which has the effect of absorbing and collecting chalk dust.

The above technical purpose of the present invention can be achieved by the following technical solutions: the powder-absorbing blackboard eraser comprises a box body and a wiping part arranged on the box body, wherein an air duct is formed in the box body, an air inlet hole is formed in the outer wall of the box body, and the air inlet hole is communicated with the air duct; along the air current direction, install filter equipment, updraft ventilator in the wind channel in proper order, the mounting groove has been seted up to the box body outer wall, the mounting groove with the wind channel is linked together, filter equipment is in including being polygon prism shape and hollow filtration post, lid filter gland, the locking bolt of post one end, filter the post peg graft in will in the mounting groove the wind channel is plugged up, filter the post including the filter frame, be fixed in the filter cloth of filter frame lateral wall, the through-hole has been seted up at the gland middle part, the locking bolt passes the through-hole filter post middle part back threaded connection in the box body.

The utility model discloses a further set up to: the box body is provided with an installation surface, the wiping part is installed on the installation surface, the air inlet holes are multiple, and the air inlet holes are formed in the installation surface and/or the side wall of the box body.

The utility model discloses a further set up to: still include a plurality of rubber stoppers, the rubber stopper is used for blockking up in the air inlet.

Through adopting above-mentioned technical scheme, user of service can selectively plug up partial fresh air inlet with the rubber buffer as required.

The utility model discloses a further set up to: the air draft device comprises a fan and a battery for supplying power to the fan.

The utility model discloses a further set up to: the filter column is a quadrangular prism, a pentagonal prism or a hexagonal prism.

By adopting the technical scheme, the pressing cover and the filter column are taken down after the locking nut is loosened, the filter column is rotated by an angle and then inserted into the mounting groove again, and then the filter column is fixed by the locking nut and the pressing cover, so that the filter cloth at different positions on the filter frame can be utilized for filtering.

The utility model discloses a further set up to: the filter column with place between the mounting groove inner wall and deposit the powder box.

The utility model has the advantages that: when the chalk dust absorbing type blackboard eraser is used, the wiping part is made of sponge or cloth, the air draft device runs, air flow is formed after air draft, chalk dust floating near the box body is sucked into the air channel of the box body, the chalk dust is collected to the air channel and the mounting groove after being filtered by the filtering device, and the chalk dust floating when the blackboard is wiped can be absorbed and collected.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural view of example 1.

FIG. 2 is a schematic diagram showing the positional relationship among the box, the air duct, the air draft device and the filtering device in example 1.

FIG. 3 is a schematic view of the structure of a filtration column of example 1.

In the figure, 1, a box body; 11. an air duct; 12. an air inlet hole; 13. an air outlet; 2. a wiping section; 3. a filtration device; 31. a filtration column; 311. a filter frame; 312. filtering cloth; 32. a gland; 33. locking the bolt; 4. an air draft device; 41. a battery; 5. a rubber plug; 6. and (5) storing the powder box.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the specific embodiments. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Example 1: a powder-absorbing blackboard eraser comprises a box body 1 and a wiping part 2, wherein one end face of the box body 1 is an installation face, the wiping part 2 is fixedly installed on the installation face, and the wiping part 2 can be sponge or cloth. An air duct 11 is formed in the box body 1, a plurality of air inlet holes 12 are formed in the mounting surface and the side wall of the box body 1, and the air inlet holes 12 are communicated with the air duct 11 in the box body 1. Rubber plugs 5 are inserted into the air inlet holes 12, so that a user can select which air inlet holes 12 are blocked and which air inlet holes 12 are opened according to needs. One end of the air duct 11 penetrates through the box body 1 to form an air outlet 13.

Along the air current direction, install filter equipment 3, updraft ventilator 4 in proper order in the wind channel 11 of box body 1, the mounting groove has been seted up to 1 outer wall of box body, and the mounting groove is linked together with wind channel 11. The filtering device 3 comprises a filtering column 31 inserted in the mounting groove, a cover, a pressing cover 32 and a locking bolt 33, wherein the pressing cover 32 and the locking bolt 33 are arranged at the groove opening of the mounting groove and pressed at one end of the filtering column 31, the appearance of the filtering column 31 is hexagonal, the filtering column 31 comprises a filtering frame 311 and filtering cloth 312 fixed on the side wall of the filtering frame 311, and the air duct 11 is blocked for filtering after the filtering column 31 is inserted in the mounting groove. The filter column 31 with the powder storage box 6 is placed between the inner walls of the mounting grooves. The gland 32 is provided with a through hole, and the locking bolt 33 sequentially penetrates through the through hole of the gland 32 and the middle part of the filter frame 311 and then is in threaded connection with the inner wall of the box body 1. The air extraction device 4 comprises a fan and a battery 41 for supplying power to the fan.

The working principle is as follows: the rubber plugs 5 in the air inlet holes 12 are partially taken out as required, the air draft device 4 operates to form air flow after air draft, chalk dust floating near the box body 1 is sucked into the air duct 11 of the box body 1, and the chalk dust is collected at the air duct 11 and the mounting groove after being filtered by the filtering device 3, so that the chalk dust floating when the blackboard is erased can be absorbed and collected.

Example 2: the powder-absorbing blackboard eraser is different from the blackboard eraser in embodiment 1 in that the shape of the filter column is a quadrangular prism or a pentagonal prism.

Claims

1. Inhale whitewashed formula blackboard eraser, include box body (1), install in wiping portion (2) on box body (1), its characterized in that: an air duct (11) is formed in the box body (1), an air inlet hole (12) is formed in the outer wall of the box body (1), and the air inlet hole (12) is communicated with the air duct (11); along the air current direction, install filter equipment (3), updraft ventilator (4) in proper order in wind channel (11), the mounting groove has been seted up to box body (1) outer wall, the mounting groove with wind channel (11) are linked together, filter equipment (3) are including being polygon prism shape and hollow filtration post (31), lid filter gland (32), locking bolt (33) of post (31) one end, filter post (31) peg graft in will in the mounting groove wind channel (11) are plugged up, filter post (31) including filter frame (311), be fixed in filter cloth (312) of filter frame (311) lateral wall, the through-hole has been seted up at gland (32) middle part, locking bolt (33) pass the through-hole filter post (31) middle part back threaded connection in box body (1).

2. The powder-absorbing blackboard eraser according to claim 1, wherein: the box body (1) is provided with an installation surface, the wiping part (2) is installed on the installation surface, a plurality of air inlet holes (12) are formed, and the air inlet holes (12) are formed in the installation surface and/or the side wall of the box body (1).

3. The powder-absorbing blackboard eraser according to claim 1, wherein: still include a plurality of rubber stoppers (5), rubber stopper (5) are used for blockking up in fresh air inlet (12).

4. The powder-absorbing blackboard eraser according to claim 1, wherein: the air draft device (4) comprises a fan and a battery (41) for supplying power to the fan.

5. The powder-absorbing blackboard eraser according to claim 1, wherein: the filter column (31) is a quadrangular prism, a pentagonal prism or a hexagonal prism.

6. The powder-absorbing blackboard eraser according to claim 1, wherein: filter column (31) with place between the mounting groove inner wall and deposit powder box (6).