CN203766327U

CN203766327U - Blackboard

Info

Publication number: CN203766327U
Application number: CN201420174106.9U
Authority: CN
Inventors: 徐耀鸿
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-04-11
Filing date: 2014-04-11
Publication date: 2014-08-13
Anticipated expiration: 2024-04-11

Abstract

The utility model relates to the technical field of teaching appliances, in particular to a blackboard. The blackboard comprises a blackboard face, a chalk ash groove is formed below the blackboard face, the middle of the chalk ash groove protrudes upwards, the chalk ash groove forms a structure with a higher middle and two lower ends, and the bottom of the chalk ash groove is a circular arc groove. According to the blackboard, chalk ash can be conveniently cleaned away, and cleanness and environment friendliness are achieved.

Description

Blackboard

Technical field

The utility model relates to a kind of teaching aid technical field, specifically, relates to a kind of blackboard.

Background technology

Blackboard is a kind of indispensable important tool in Teaching field, the blackboard of prior art, and plate face below for collecting the ash collection slot of chalk dust, needs the regular or irregular cleaning of student with one conventionally, pollutes greatly, and cleaning is got up very inconvenient.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, adapts to reality needs, and a kind of blackboard is provided, and blackboard of the present utility model has solved the not problem of easy to clean of chalk dust in prior art.

In order to realize the purpose of this utility model, the technical solution adopted in the utility model is:

A kind of blackboard, comprises blackboard panel, and the below of blackboard panel is provided with chalk dust ledge, and the middle part of described chalk dust ledge raises up, and makes chalk dust ledge form the low structure in high two ends, middle part, and the bottom of described chalk dust ledge is circular-arc groove.

The two ends of described chalk dust ledge are provided with ash collecting box, the main body of described ash collecting box is the cylinder with top cover, cylindrical bottom is arc surface or sphere, cylindrical sidewall is with the entrance of a chalk dust, the shape of described entrance shape and chalk dust ledge outer end matches, and the entrance of described chalk dust is connected by hook with the outer end of chalk dust ledge.

The outside of described ash collecting box is provided with a negative pressure aspirating mechanism, described negative pressure aspirating mechanism comprises a negative pressure cylinder, between the inner chamber of described negative pressure cylinder and ash collecting box main body, be provided with a dustproof grid being positioned on ash collecting box sidewall, in described negative pressure cylinder, be provided with a filter, described negative pressure cylinder outside is connected with air exhauster by airduct, between described negative pressure cylinder and ash collecting box by hook or bayonet socket or be threaded.

The beneficial effects of the utility model are:

1. can clear up easily chalk dust, clean environmental protection;

2. simple in structure, easily realize.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the structure for amplifying schematic diagram of ash collecting box.

1 is blackboard panel, and 2 is chalk dust ledge, and 3 is ash collecting box, and 4 is hook, and 5 be negative pressure cylinder, and 6 is the grid that prevents dust, and 7 is filter, and 8 is airduct, 9 entrances that are chalk dust.

Detailed description of the invention

Below in conjunction with drawings and Examples, the utility model is further illustrated:

Embodiment: referring to Fig. 1, Fig. 2.

A kind of blackboard, comprises blackboard panel 1, and the below of blackboard panel 1 is provided with chalk dust ledge 2, and the middle part of described chalk dust ledge 2 raises up, and makes chalk dust ledge 2 form the low structure in high two ends, middle part, and the bottom of described chalk dust ledge 2 is circular-arc groove.

Such structural design can be concentrated easily the chalk dust in chalk dust ledge 2 in the time of cleaning from middle phase two ends, circular-arc groove has played guide functions, and student clears up convenient.

The two ends of described chalk dust ledge 2 are provided with ash collecting box 3, the main body of described ash collecting box 3 is the cylinder with top cover, cylindrical bottom is arc surface or sphere, be cylinder by the body design of ash collecting box 3, bottom design is arc surface or sphere, in box, there is not dead angle, chalk dust is difficult for being bonded at inboard wall of cartridge, cylindrical sidewall is with the entrance 9 of a chalk dust, the shape of described entrance shape and chalk dust ledge 2 outer ends matches, and the entrance of described chalk dust is connected by hook 4 with the outer end of chalk dust ledge 2.Ash collecting box 3 is hung over to the outer end of chalk dust ledge 2, when chalk dust in box focuses on when abundant, taken off and topple over and can again hang up, student can enter ash collecting box 3 by human assistance chalk dust.

As another more excellent embodiment, the outside of described ash collecting box 3 is provided with a negative pressure aspirating mechanism, described negative pressure aspirating mechanism comprises a negative pressure cylinder 5, between the inner chamber of described negative pressure cylinder 5 and ash collecting box 3 main bodys, be provided with a dustproof grid 6 being positioned on ash collecting box sidewall, in described negative pressure cylinder 5, be provided with a filter 7, described negative pressure cylinder 5 is outside to be connected with air exhauster by airduct 8, between described negative pressure cylinder 5 and ash collecting box 3 by hook or buckle or be threaded.The negative pressure aspirating mechanism that only shows a side in figure, opposite side is not shown, in reality, can increase.In actual use, negative pressure cylinder 5 can be fixed on to the side of blackboard panel 1, airduct 8 is fixed on wall, then a small-sized air exhauster is aside installed is connected with airduct 8, when chalk dust in each chalk dust ledge 2 is abundant, open air exhauster second, can be by chalk dust suction ash collecting box 3.And the low structural design in chalk dust ledge two ends makes mobile being more prone to of chalk dust.Ash collecting box 3 one sides hang over the outer end of chalk dust ledge 2, and opposite side, can be dismantled by hook or buckle or be threaded easily with negative pressure cylinder 5.Due to the iris action of dustproof grid 6, filter 7, chalk dust can not be drawn into airduct 8.Regularly ash collecting box 3 is pulled down to cleaning.

Claims

1. a blackboard, comprises blackboard panel, and the below of blackboard panel is provided with chalk dust ledge, it is characterized in that: the middle part of described chalk dust ledge raises up, and makes chalk dust ledge form the low structure in high two ends, middle part, and the bottom of described chalk dust ledge is circular-arc groove.

2. blackboard according to claim 1, it is characterized in that: the two ends of described chalk dust ledge are provided with ash collecting box, the main body of described ash collecting box is the cylinder with top cover, cylindrical bottom is arc surface or sphere, cylindrical sidewall is with the entrance of a chalk dust, the shape of described entrance shape and chalk dust ledge outer end matches, and the entrance of described chalk dust is connected by hook with the outer end of chalk dust ledge.

3. blackboard according to claim 1, it is characterized in that: the outside of described ash collecting box is provided with a negative pressure aspirating mechanism, described negative pressure aspirating mechanism comprises a negative pressure cylinder, between the inner chamber of described negative pressure cylinder and ash collecting box main body, be provided with a dustproof grid being positioned on ash collecting box sidewall, in described negative pressure cylinder, be provided with a filter, described negative pressure cylinder outside is connected with air exhauster by airduct, between described negative pressure cylinder and ash collecting box by hook or buckle or be threaded.