CN2395905Y - Electric dust-absorbing blackboard erazer - Google Patents

Abstract

The utility model relates to an electric dust-absorbing blackboard eraser, and belongs to a teaching aid. The utility model is composed of a suction cleaner, a dust suction head and a motor, wherein, the dust suction head is communicated with a box body by a dust suction tube, and one side of the box body is open. The walls of the box are provided with air inlets, and a rotating shaft with a spiral brush is arranged in the box. The rotating shaft is driven by a motor through a transmission belt to be rotated, and the brush is moved to erase chalk characters on a blackboard. The utility model has the advantages of good effect, time saving, labor saving, simple structure and convenient use, eliminates pollution, and improves teaching quality.

Description

Electric dust absorption blackboard eraser

The utility model relates to a kind of electric dust absorption blackboard eraser that erases the board, and belongs to teaching aid.

Frequent the erasing the board of classroom instruction teacher at present, Chinese patent once disclosed manual dust absorption blackboard eraser and solved dust pollution question, also disclosed the self-erasable electric blackboard device, though but these measures can be wiped chalk, also solve the problem of dust pollution, but complex structure breaks down easily.

The purpose of this utility model provides a kind of simple in structure, and the high electric dust absorption blackboard eraser of word efficient is wiped in dust suction.

The purpose of this utility model can be achieved through the following technical solutions: it comprises the sweep-up pipe of dust catcher and connection thereof, be provided with the support of band roller in two sides of dust catcher casing, sweep-up pipe connects through pipe joint, one end is communicated with an open ports hairbrush box, be provided with rotating shaft in the hairbrush box with the supporting of box wall, has the spiral hairbrush in the rotating shaft, the end of rotating shaft outside the hairbrush box has driving-belt by driven by motor, has air admission hole on hairbrush box two end walls, utilize the effect of calming the anger of spiral hairbrush, pressurize to middle air entry from the both sides air inlet, increased the dust collection efficiency that air-breathing negative pressure strengthens dust catcher.

The utility model compared with prior art, and is time saving and energy saving, effective.Number of times increases because internal hair brushing of high unit interval of motor speed erases the board, and blackboard eraser is brushing back and forth, as long as once go up in the place that writing is arranged or move down.

Because hairbrush is rotated at a high speed under the action of centrifugal force, dust is not adsorbed on the hairbrush, can not be scattered on the blackboard again.

The open face of hairbrush box is a level, and it contacts identical with blackboard surface, can seal, and exists a pressure reduction inside and outside the box, and this pressure reduction can make electric blackboard eraser be adsorbed on the blackboard, can alleviate the arm support and press power, improves teaching condition.

Fig. 1 is the utility model structural representation.

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

1--air inlet, 2--spiral hairbrush, 3--hairbrush box, 4--sweep-up pipe, 5--roller, 6--filter screen, 7--power switch, 8--support, 9--exhaust outlet, 10-dust catcher casing, 11--attaching plug, 12--fan, 13--motor, 14--supply socket, 15--rotating shaft, 16--air entry, 17--motor, 18--driving-belt, 19--motor plug.

To specifically describe embodiment of the present utility model below.

As shown in drawings: hairbrush box 3 can be the cleaner head of dust catcher, material can be plastics, injection mo(u)lding, hairbrush can adopt felt or plastics silk or nylon yarn flexible, hairbrush and rotating shaft 15 are spirality for the one hairbrush, hairbrush can exceed hairbrush box (3), four edge levels of box body 3 guarantee to be buckled on the blackboard to seal.The rear side of hairbrush box 3 is provided with motor and drives hairbrush rotating shaft 15 by belt 18.Dust catcher can adopt the supporting use of small-sized portable dust catcher on the market.The housing of dust catcher is has motor, fan, screen pack, dust can connect a turning shape support 8 by dress outside the case Inner filter net, on the casing in the dust suction casing case, the support material can be plastics, roller 5 is equipped with in the support upper end, this roller can roll in the ledge for chalk on blackboard below blackboard, the dust catcher lower box can be provided with exhaust outlet, sweep-up pipe can be longer in the use, and the roller on the casing rolls about can be in the ledge for chalk on blackboard under the blackboard.

Supply socket 14, power supply source plug 19 connect power supply wiring and two motor of 13 motor power line parallels are controlled by switch 7, and electric power can be 40 watts.The utility model uses light, applicable to various blackboard eraser words.

Claims (2)

1, a kind of electric dust absorption blackboard eraser, the sweep-up pipe that comprises dust catcher and connected (4), be provided with the support (8) of band roller (5) in dust catcher casing (10) two sides, it is characterized in that sweep-up pipe (4) connects through pipe joint, one end is communicated with a uncovered hairbrush box (3), be provided with the rotating shaft (15) with the supporting of box wall in the hairbrush box, have spirality hairbrush (2) in the rotating shaft (15), rotating shaft (15) has driving-belt (18) to connect the motor outer shaft in the brush box outer end.

2, blackboard eraser according to claim 1 is characterized in that having air admission hole (1) on hairbrush box two end walls.

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