CN2618779Y - Blackboard eraser with duster - Google Patents

Abstract

A blackboard eraser, which can constrain chalk ash and reduce dust in use, comprises groove type roller bins (3) which are opened on the bottom of the blackboard eraser shell (1) and the two sides of the brush (2), constraining ash components which are fixed in the roller bins, an axle sleeve (4), an arbor (5), a brush roller (7) and a roller wheel (6). When the blackboard eraser is used to eraser blackboard (10), one side of the brush roller is rolled on chalk word firstly, and chalk ash which is erased is constrained within the constraining ash gap (8) between the brush roller and the brush, further chalk ash is swept into a shell cavity (9) by rotating the brush roller. Chalk ash can be poured out from the shell cavity by opening an upper cover (11). The constraining ash component can be used independently or can used to combine with other dust absorption means to improve the function and practicality of the cleaning-dust blackboard eraser.

Description

Restraint grey blackboard eraser

A kind of blackboard eraser that can collect chalk dust of technical field particularly can the operative constraint chalk dust when erasing the board, reduce the blackboard eraser of dust from flying.

The chalk dust of kicking up when background technology erases the board is understood contaminated air, is influenced teachers and students' health.For alleviating chalk ash pollution, though constantly propose various dust-removing blackboard eraser schemes for a long time, as " electronics newspaper " the 51st phase in 1986 two editions " electric precipitation blackboard erasers " of publishing, Chinese patent 01262046 " electric dust absorption blackboard eraser " etc., but so far by reality adopt very few.Its reason mainly is: unidirectional slowly mobile different with cleaner suction nozzle, not only responsiveness is very fast when erasing the board, dust-removing blackboard eraser has little time to absorb the chalk dust on the wiping path, and come and go and to brandish the rough air that blackboard eraser produces, the part chalk dust is raised out the dust suction scope, more reduced dust removing effects.

Summary of the invention provides a kind of bundle ash member that can block flow perturbation, reduces chalk dust and flies upward from the blackboard surface, in time receives and removes restrained chalk dust, improves the action effect of dust-removing blackboard eraser.

The implementation method the purpose of this utility model is achieved in that in the original brushing of blackboard eraser both sides flexibility being set rolls roller, brushing and rough air are kept apart, chalk dust under simultaneously brushing being wiped retrains, concentrates in the small space that rolls between roller and the brushing, is convenient to faster receipts and removes.

The advantage of this programme is, restraints that grey member is simple effectively, materials are few, do not consume energy, and both can use separately, also can match with other dust suctions, dedusting means, improves the function and the practicality of dust-removing blackboard eraser.

Description of drawings is further described such scheme below in conjunction with embodiment and Figure of description.

This example is to adopt the grey member of bundle separately, and flexibility is rolled the bundle ash blackboard eraser that roller is taked palm fiber formula brush roll structure.

Fig. 1 is the grey blackboard eraser primary structure schematic diagram of bundle.On the bottom surface of housing (1), the bristle, the brushing both sides that are implanted with brushing (2) have grooved roller storehouse (3), groove two, storehouse is embedded with axle sleeve (4), be inserted with roll shaft (5) in the axle sleeve, roll shaft is wrapped with the palm fiber of brush roll (7), roller (6) is equipped with at the brush roll two ends, and roller can drive brush roll and rotate in the roller storehouse.

The housing another side is openable loam cake.

Fig. 2 is the cross-sectional configuration and the functional schematic of the grey member of bundle.When erasing the board, for obtaining bristle at the wiping pressure on blackboard surface, the isolation effect of enhancing brush roll, the bristle lengths of brushing (2) should be greater than the interval of drain pan (1) below with blackboard (10); The external diameter of palm fiber brush roll (7) should be greater than the diameter of roller (6) and the groove width of roller storehouse (3).When the direction of arrow erases the board among the figure, roller rolls on the blackboard surface, drive roller shaft (5) is done counter rotation in axle sleeve (4), and the drive brush roll rolls across from powder plate word, chalk dust under brushing is wiped in the brush roll back, in the grey crack of bundle (8), " sweep " and go into shell chamber (9) by the brush roll palm fiber that is rotated immediately by brush roll " retaining " for major part.When oppositely wiping is moving, then by another brush roll " retaining " ash, " sweeping " dirt.Open the chalk dust of harvesting in the pourable shell of loam cake (11) chamber.

Claims (1)

1. A kind ofly can retrain the bundle ash blackboard eraser that chalk dust flies upward when erasing the board, it is characterized in that the brushing both sides at blackboard eraser, setting can be blocked chalk dust, concentrate on the flexible brush roll in the small space.