CN2378211Y - Dust-collecing electric blackboard eraser - Google Patents

Abstract

The utility model discloses a dust-collecting electric blackboard eraser. The utility model mainly comprises a miniature motor which is installed in a housing, a large fan which is installed on a main shaft, and a brush disc shaft which is driven by a driving belt and is provided with a brush disc and a small fan. The end surfaces of a brush head and a brush tail are respectively inlaid with a small ball. The small fan is driven by the miniature motor; the large fan sucks all chalk dust which is erased by the brush hair of the rotating brush disc into a dust suction passage, and the chalk dust is sent through a funnel-shaped cloth bag and is collected and stored in a filtering material layer. The utility model has the advantages of simple structure, convenient and labor-saving use, and good cleaning and dust suction effect. The utility model is especially suitable for popularization and use in schools.

Description

Dust suction driven blackboard brush

The utility model relates to the cleaning erasing apparatus of blackboard, specifically a kind ofly is particularly suitable for the dust suction driven blackboard brush that school instruction uses.

For many years, in the teaching of China, the overwhelming majority is still and adopts traditional teachers and students to write professor's mode of demonstration with chalk in the face of blackboard, teacher on blackboard, numerous teachers come into contacts with chalk and blackboard brush every day, in the teaching process, the teacher constantly writes demonstration with chalk and teaches on blackboard, and then with blackboard brush blackboard eraser is removed and totally to write again, so repeatedly.Common blackboard brush is that the fixed installation bristle constitutes on the brush body, when wiping blackboard with this blackboard brush, the gas but also chalk dust is flown upward everywhere of not only having required great effort is in teaching process, Faculty and Students all are forced to suck a large amount of chalk dusts, have a strong impact on teachers and students' the respiratory tract and the health of lung.Chinese patent CN2235906Y discloses the utility model patent that a kind of name is called ' electric dust absorption blackboard eraser ', it is the rotation of minitype motor driving dust suction blade to be installed produce negative pressure and form dust-absorbing strength in housing, and the chalk dust that the erazer head that is fixedly installed in the housing front end produces when wiping blackboard can suck in the dust pocket in the housing.This ' electric dust absorption blackboard eraser ' has certain effect to alleviating the chalk dust pollution, but when being to use this ' electric dust absorption blackboard eraser ', still need firmly erazer head be pressed on move around on the blackboard and wipe, it is time-consuming to wipe the blackboard effort, the chalk dust that has done in the erazer head outside can not be inhaled in the dust pocket, causes pick-up performance not really desirable.

The purpose of this utility model is to propose a kind of dust suction driven blackboard brush that saves time and have fine pick-up performance easy to use, laborsaving on the prior art basis.

The purpose of this utility model is achieved by the following technical solution:

A kind of dust suction driven blackboard brush, it mainly comprises housing, battery is installed, the rear end hamper of switch, be installed on the micromachine of housing, be installed on the big fan of main shaft and the brush dish axle that the brush dish is installed that drives by driving belt, on the brush dish axle small fan is installed, be installed with bristle on the brush dish, be distributed with the dust suction through hole on the brush dish, the brush end face of housing is embedded with little ball by circular ring cover, the brush breech face of housing is embedded with little ball by the tail-hood plate, done dust absorption passage in the brush handle of housing, infundibulate cloth bag and filter material layer are installed in the dust absorption passage, the infundibulate cloth bag can import the filter material layer collection storage with the chalk dust that sucks, when inactive keeping flat, the infundibulate cloth bag is lax naturally, can prevent effectively that the chalk dust of collection storage from being poured out by brush, has done exhaust vent on the brush tail of housing.

The big fan and the small fan of minitype motor driving are installed in the housing of the present utility model, having stronger dust-absorbing strength can all suck chalk dust in the dust absorption passage through filter material layer collection storage, end face at brush and brush tail is embedded with little ball, the brush dish that is installed with bristle can remove blackboard eraser clean by the minitype motor driving rotation, very easy to use, laborsaving saving time has good cleaning pick-up performance.

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

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the A--A view (the local amplification) of Fig. 2;

Fig. 4 is an electrical schematic diagram of the present utility model.

Below in conjunction with accompanying drawing the utility model is further described:

A kind of dust suction driven blackboard brush, it mainly comprises housing 1, battery 27 is installed, the rear end hamper 31 of switch 29, be installed on the micromachine 17 of housing 1, by bearing 24 supporting big fan 15 is installed, the main shaft 16 of belt pulley 22, by what driving belt 25 drove brush dish 6 is installed, the brush dish axle 2 of belt pulley 28, on the brush dish axle 2 small fan 3 is installed, brush dish axle 2 is by bearing 9,30 supportings, be installed with bristle 5 on the brush dish 6, be distributed with dust suction through hole 7 on the brush dish 6, the end face of the brush 32 of housing 1 is embedded with little ball 4 by screw 35 hard-wired circular ring covers 8, the end face of the brush tail 34 of housing 1 is embedded with little ball 18 by screw 36 hard-wired tail-hood plates 19, done dust absorption passage 13 in the brush handle 33 of housing 1, infundibulate cloth bag 11 and filter material layer 14 are installed in the dust absorption passage 13, infundibulate cloth bag 11 is installed in dust absorption passage 13 porch by elastic ring 10, cover plate 12 has been made at brush handle 33 places, take off cover plate 12 and can clean change the outfit infundibulate cloth bag 11 and filter material layer 14 easily, do exhaust vent 20 on the brush tail 34 of housing 1, done aperture 21 on the wall of exhaust vent 20, make concavo-convex 23 at the inwall of exhaust vent 20 erasure effect is preferably arranged.It is work like this: hold brush handle 33, open switch 29, brush 32 and brush tail 34 be flat on the blackboard move around, by motor 17, driving belt 25 drives 6 rotations of brush dish, the bristle 5 that is installed on the brush dish 6 can remove cleaning totally with blackboard eraser, chalk dust is by small fan 3, the dust suction through hole 7 that big fan 15 distributes on brush dish 6 all sucks, import filter material layer 14 collection storages that are installed in the dust absorption passage 13 by leaking half shape cloth bag 11 again, when inactive keeping flat, infundibulate cloth bag 11 is the nature relaxed state, the chalk dust that can prevent collection storage is effectively poured out by brush 32, take off cover plate 12, can easily the chalk dust of collection storage be concentrated and discharge, at brush 32, brush tail 34 end faces are the little ball 4 of setting-in respectively, 18 become point to contact with blackboard surface, and it is easy and convenient when wiping blackboard to move around, laborsaving saving time, take off the cover plate 26 on the rear end hamper 31, can change battery 27 easily.

Claims (1)

1. a dust suction driven blackboard is brushed, it mainly comprises housing (1), rear end hamper (31), be installed on the micromachine (17) of housing (1), be installed on the big fan (15) of main shaft (16) and the brush dish axle (2) that brush dish (6) is installed that drives by driving belt (25), small fan (3) is installed on the brush dish axle (2), be installed with bristle (5) on the brush dish (6), it is characterized in that being distributed with on the brush dish (6) dust suction through hole (7), brush (32) end face of housing (1) is embedded with little ball (4) by circular ring cover (8), brush tail (34) end face of housing (1) is embedded with little ball (18) by tail-hood plate (19), done dust absorption passage (13) in the brush handle (33) of housing (1), infundibulate cloth bag (11) and filter material layer (14) are installed in the dust absorption passage (13), have done exhaust vent (20) on the brush tail (34) of housing (1).

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