CN2526187Y - Dry cleaning machine for blackboard eraser - Google Patents

Abstract

The utility model relates to a dry cleaning machine for blackboard eraser, which is a teaching assisting instrument which can dry-clean the prior blackboard erasers which are used with a large amount, i.e. can clear the exceeded chalk dust on the hair. The utility model integrates the mechanical dust scraping, pressure-loaded dust sucking, foam dust filter and sealing dust collection so as to form a small portable instrument which can sanitarily and highly efficiently dry-clean the blackboard erasers and automatically collect and clear the dust, and greatly reduce the spread of the chalk dust, thus improving the atmosphere in the teaching and avoiding the serious harm to the teachers and the students brought by the large-amount and evermore chalk dust.

Description

The blackboard eraser dry cleaner

Affiliated technical field

The utility model relates to a kind of teaching appurtenance, is used to reduce the severe contamination that use a large amount of chalk dusts that chalk, blackboard and blackboard eraser caused bring air.

Background technology

As everyone knows, the text carrier of the most often using that blackboard and chalk are used to give lessons in remaining the various all kinds of schools of China at present, but the chalk dust that it brings pollution is quite serious, and this problem once caused and continued to cause a lot of people's concern.A lot of person who is ambitious or tenacious of purposes' designs even made plurality of proposals, but none puts it over, and pollutes as before, dust are at every moment at infringement teacher and classmates' lung health.

Only with regard to blackboard eraser, though many new inventions are arranged, with regard to present circumstances (even in long duration) use the most general, the most still be felt formula blackboard eraser.This blackboard eraser advantage is a lot: softness is moderate, use is laborsaving, and suction powder power is strong, simple and inexpensive.But shortcoming is also outstanding: when the dust of felt surface absorption once saturated, dust just is difficult for being continued absorption, erases the board more firmly at this moment that then dust from flying is severe more, and blackboard also more and more difficulty wipe clean---dust wafts without restraint, serious harm people's health.

How do people tackle? must not wash by water---that can cause felt to damage.The way of custom is to take to pat on coarse metope---the wall but also cause " secondary pollution " so not only made dirty: a large amount of dust are dispersed among surrounding air, still contaminated environment.

Summary of the invention

The utility model has adopted a whole set of to comprise the composite set of mechanical dust blowing, negative pressure dust suction, foam filter dirt, sealing control of dust, can make blackboard eraser obtain " dry-cleaning " at any time effectively---remain the good strong state of suction powder power, it is laborsaving and clean off a blackboard up hill and dale to be convenient to the user, this has just been avoided flying upward of chalk dust, thereby has significantly reduced the aerial harmful pollution of chalk dust.

The machinery dust blowing is gone up the convex metal end by one side and is realized, up gets many dentation apertures down from it, and hand-held blackboard eraser is constantly patted on perforation, and the dust on the blackboard eraser will be fallen by scraping.This moment if the airless effect then dust and if be in powerful air-negative-pressure effect under dust just can automatically adsorb, accumulate in ventilative and moistening foam pad not saturating dirt on from ought flying upward everywhere.

The generation of negative-pressure air-flow is from the high speed rotation of receded disk impeller, and the power of rotation is from motor.The impeller of rotation is with the outside fan-out of middle part air-flow, and the air communication of fan-out is crossed steam vent and discharged, and the impeller middle part has just formed negative pressure when the time comes.

As long as the dust collecting container mesopore is aimed at the impeller middle part, and guaranteed the sealing property of dividing plate, pick-up performance just can be guaranteed, thereby " dry-cleaning blackboard eraser " just is achieved.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Among the figure: 1. handle, 2. barrel-shaped shell, 3. vortex-like impeller, 4. motor, 5. cushion socket, 6. dentation aperture, 7. convex-shaped end cap, 8. dust collecting container, 9. porous foam pad, 10. ventilative fence, 11. seal diaphragm, 12. power switches, 13. steam vents, 14. attaching plugs.

The specific embodiment

Attaching plug 14 pulled out connect commercial power socket, open switch 12 back motor 4 and drive the rotation at a high speed of vortex-like impeller 3, at this moment the impeller center produces negative-pressure sucking, and this suction sees through 10 pairs of dust collecting containers of fence 8 and produces the dust suction effects.

To adsorb the blackboard eraser felt face that dust reached saturated situation this moment and pat on the dentation aperture 6 on the convex end cap 7, the dust on the felt face just can drop one after another and clean breathing freely of being extracted again in advance but not thoroughly on the moistening foam pad 9 of dirt.

Because the suction of negative pressure, dust not only can not disperse, and accumulates in firmly on the contrary on the foam pad, only need take out when the dust that gathers on the foam pad is too much in water and put into again and can work on after cleaning, extracting.Whole process is not only safety but also health soon not only.

Barrel-shaped shell 2 and handle 1 play portable and beauty function, and wherein the steam vent 14 of bucket bottom is very important, and it can form outlet for the air of centrifugal revolving wormgear fan-out.Owing to be provided with foam filter bed separation layer, steam vent there is no dust and discharges, and therefore can not bring secondary pollution.

Because whole apparatus structure is ingenious, safe and reliable, portable facility, effect is out of the ordinary and cost is not high, so " blackboard eraser dry cleaner " estimates to be subjected to all kinds of teachers and students' of school welcome---it really can make things convenient for, solve effectively with serious pollution old, big, the difficult problem of chalk dust in the classroom.

Claims (2)

1. one kind is to solve in the teaching to use blackboard, the dust pollution that chalk and blackboard eraser brought and do not have the small portable " blackboard eraser dry cleaner " of meter, it is characterized in that: will play the end cap that contains the dentation aperture of mechanical dust blowing and wet foam filter bed and the negative pressure air-suction device in the airtight container and combine, negative pressure relies on motor, vortex-like impeller and steam vent produce, this negative pressure makes pulverized coal borne air flow will be collected on the wet foam filter bed by the absorption of the chalk dust under scraping on the end cap by ventilative fence, and filter bed can wash at any time, use repeatedly after wringing out, when re-using after the dry-cleaning of blackboard eraser felt face because it inhales the very strong chalk dust of can avoiding then of powder power flies away in a large number in the space.

2. " blackboard eraser dry cleaner " according to claim 1, it is characterized in that: it partly is that to open the dividing plate in grid hole in leaning on separated that intake negative-pressure produces part and airtight container, and the air that is rich in dust filters the back dust through the wet foam filter bed in the airtight container and sink to gather in pad and goes up and be cleaned air by the discharge of exhaust ventilation mouth.

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