CN201169174Y - Absorbent blackboard eraser - Google Patents

Abstract

The utility model belongs to a teaching tool, in particular to a dust absorbing blackboard eraser which is characterized in that a wind inlet is arranged in the center of a soleplate and a brush eraser body, the inner side of the soleplate is provided with an intake fan which is coaxial with the wind inlet, a filter cloth bag is sleeved on the periphery of the intake fan and is fixedly connected on the edge of the soleplate, and the brush eraser body in the tangent direction of the wind inlet is provided with a plurality of dust channels communicated with the wind inlet. The dust absorbing blackboard eraser has the advantages that when the chalk words are erased, the dust does not disperse all over the place, the environment is not polluted, the health of both the teacher and the student are not harmed by dust, and the eraser is convenient to clean and process.

Description

Dust absorption blackboard eraser

Technical field:

The utility model belongs to teaching aid, is specifically related to a kind of dust absorption blackboard eraser.

Background technology:

The dust that existing blackboard eraser produces when wiping chalk writing disperse everywhere, contaminated air environment not only, and, influence healthy easily by academics and students's inspiration.

Summary of the invention:

The purpose of this utility model provides and can absorb dust when wiping chalk writing, prevents the dust absorption blackboard eraser of dust disperse everywhere.

The technical solution of the utility model is: a kind of dust absorption blackboard eraser, at the fixing one deck hair rub body of plate outer side, it is characterized in that establishing air inlet at base plate and hair rub body center, the base plate inboard is provided with the drawing fan coaxial with air inlet, be with one in the periphery of drawing fan and filter cloth bag, cloth bag is fixed on the edge of base plate, is provided with several dust passages and air inlet perforation on the hair rub body on the air inlet tangential direction.

Owing to adopt technique scheme, when wiping chalk writing, start drawing fan, chalk dust is inhaled into and is collected in the cloth bag together, has the not disperse everywhere of dust that produces when wiping chalk writing, non-environmental-pollution has been avoided the infringement of dust to Faculty and Students' health, and is convenient to the advantage of cleaning.

Description of drawings:

Come the technical solution of the utility model is described further below in conjunction with the drawings and specific embodiments.

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

Fig. 2 is the upward view of Fig. 1.

The specific embodiment:

With reference to figure 1, Fig. 2.A kind of dust absorption blackboard eraser, fixing one deck hair rub body 2 in base plate 1 outside, establish air inlet 4 at base plate 1 and hair rub body 2 centers, the base plate inboard is provided with the drawing fan 3 coaxial with air inlet, be with one in the periphery of drawing fan and filter cloth bag 5, cloth bag 5 is fixed on the edge of base plate 1, is provided with several dust passages 6 and connects with air inlet 4 on the hair rub body 2 on air inlet 4 tangential directions, and the power line of drawing fan is by passing on the base plate.

Claims (1)

1, a kind of dust absorption blackboard eraser, fixing one deck hair rub body (2) in base plate (1) outside, it is characterized in that establishing air inlet (4) at base plate (1) and hair rub body (2) center, the base plate inboard is provided with the drawing fan coaxial with air inlet (3), be with one in the periphery of drawing fan and filter cloth bag (5), cloth bag (5) is fixed on the edge of base plate (1), is provided with several dust passages (6) and connects with air inlet (4) on the hair rub body (2) on air inlet (4) tangential direction.

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