CN102825959A

CN102825959A - Dust-absorption type blackboard eraser

Info

Publication number: CN102825959A
Application number: CN2012103656206A
Authority: CN
Inventors: 李广英
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-09-27
Filing date: 2012-09-27
Publication date: 2012-12-19

Abstract

The invention provides a blackboard eraser with a good dust absorption effect. The blackboard eraser comprises a blackboard eraser shell in shape of a rectangle, wherein the surface of the blackboard eraser is latticed, and the outer surface of the blackboard eraser is provided with fluff fibers; a cell shell is arranged in the blackboard eraser shell and is used for containing a cell; the blackboard eraser shell is further provided with a switch, an exhaust fan, a cover plate and a dustproof mesh; the exhaust fan can cause an inner cavity of the blackboard eraser shell to be of negative pressure so that dusts enter the blackboard eraser shell from an erasing surface; the dustproof mesh is arranged between the exhaust fan and the inner cavity of the blackboard eraser shell so as to effectively prevent the dusts from flying out of the blackboard eraser shell; the two sides of the blackboard eraser shell are respectively provided with one exhaust fan, and the exhaust fans are electrically connected with the switch and a power supply; and a drawing type cover plate is arranged on the side surface of the blackboard eraser shell so that collected chalk dusts can be conveniently poured out. The blackboard eraser provided by the invention has the positive effects of having a simple structure, low manufacturing cost and good dust collection effect, being capable of effectively solving problems that the chalk dusts can pollute the environment and damages the physical and mental health of teachers and students, and having excellent social and environmental benefits.

Description

A kind of ash-collecting blackboard eraser

Technical field

The present invention relates to a kind of ash-collecting blackboard eraser, belong to the teaching aid field.

Background technology

At present, during the chalk person's handwriting of the ordinary blackboard eraser that school uses on blackboard wiping, can produce amounts of dust, waft and brim with in the environment, serious harm the teachers and students that in this environment, work, learn physically and mentally healthy, the people's harm to blackboard wiping is bigger especially.

Summary of the invention

The present invention utilizes exhaust facility, makes the housing inner chamber form negative pressure, effectively collects a kind of rectangular shape ash-collecting blackboard eraser of dust.

For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: the blackboard eraser face, be netted, and the outside is provided with villus fiber; Be provided with battery case in the blackboard eraser housing, be used to hold battery; Also be provided with switch, ventilating fan, cover plate, Air Filter on the blackboard eraser housing; Switch is used to control the ventilating fan power supply, and ventilating fan can make the housing inner chamber form negative pressure, and dust is entered in the blackboard eraser housing from wiping face; Air Filter effectively stops dust in housing, to fly out between ventilating fan and housing inner chamber.

For effectively collecting dust, in blackboard eraser housing both sides a ventilating fan is set respectively, ventilating fan is electrically connected with power switch.

For ensureing the normal operation of ventilating fan, ventilating fan is electrically connected through switch with battery.

For conveniently pouring out the chalk dust of collecting, the cover plate of a drawing and pulling type is set, in the side of blackboard eraser housing when taking out when uncapping plate promptly pourable chalk dust.

Good effect of the present invention is: simple in structure, low cost of manufacture, dust collection effect is good, can effectively solve chalk dust contaminated environment, harm teachers and students' physically and mentally healthy problem, so the present invention has good social benefit and environmental benefit.

Description of drawings

Fig. 1 is a structural representation of the present invention

Fig. 2 is 7 Air Filter sketch mapes among Fig. 1

1. wiping faces among the figure, 2. blackboard eraser housing, 3. battery, 4. battery case, 5. switch, 6. ventilating fan, 7. Air Filter, 8. cover plate.

The specific embodiment

In Fig. 1, blackboard eraser housing (2) is rectangle, and last plane is that blackboard eraser is wiped face (1), and battery case (4) is positioned at blackboard eraser housing (2) and an end that be parallel to shorter side, and cover plate (8) is positioned on another shorter side; End in the long two sides of blackboard eraser housing (2) near battery case (4) has a ventilating fan (6) respectively; Air Filter (7) is positioned at the centre of ventilating fan (6) and blackboard eraser housing inner chamber; Switch (5) is positioned at an end of the long side of blackboard eraser housing, and switch (5) is electrically connected with battery that is positioned at battery case (4) (3) and ventilating fan (6).

Claims

1. ash-collecting blackboard eraser; It is characterized in that: comprise that blackboard eraser housing (2) is rectangle; Last plane is that blackboard eraser is wiped face (1), and battery case (4) is positioned at blackboard eraser housing (2) and an end that be parallel to shorter side, and cover plate (8) is positioned on another shorter side; End in the long two sides of blackboard eraser housing (2) near battery case (4) has a ventilating fan (6) respectively; Air Filter (7) is positioned at the centre of ventilating fan (6) and blackboard eraser housing inner chamber; Switch (5) is positioned at an end of the long side of blackboard eraser housing, and switch (5) is electrically connected with battery that is positioned at battery case (4) (3) and ventilating fan (6).

2. a kind of ash-collecting blackboard eraser according to claim 1 is characterized in that: it is the netted shape hair side that has fine animal fibre that blackboard eraser is wiped face (1), is beneficial to chalk dust and sucks.

3. a kind of ash-collecting blackboard eraser according to claim 1 is characterized in that: Air Filter (7) is netted, is positioned between ventilating fan (6) and the blackboard eraser housing inner chamber, plays the discharge air, the effect that effectively stops chalk dust to fly out in the housing again.