CN202498889U - Blackboard capable of carrying out erasure automatically - Google Patents

Abstract

A blackboard that can be automatically erased is composed of an erasing device, a misting device and a blowing device. The erasing device is driven by a motor through a chain to drive the rubbing roller to reciprocate. The rubbing roller slides on the blackboard through a pulley. It is connected to the water pump in the pool, the spray pipe is located above the blackboard, and spray holes are separated at intervals, and the blowing device is located on the side of the blackboard, and is composed of a blower connected to a trumpet-shaped air outlet. The automatic erasable blackboard of the utility model improves the existing blackboard through electromechanical equipment, realizes the automatic erasure of the blackboard, effectively prevents the generation of dust, has the effect of quick and convenient erasing, and effectively eliminates the need for teachers and students to wipe the blackboard. The hard work of removing the blackboard saves time for the teacher to teach.

Description

self-erasing chalkboard

technical field

The application relates to the field of teaching appliances, in particular to a blackboard.

Background technique

The blackboard is an indispensable teaching tool in the current teaching activities. The chalk written on the blackboard is cheap and has good writing effect, which has irreplaceable advantages, but the chalk dust produced by it endangers the health of teachers and students. At present, most of the blackboards used in schools need to be manually erased, which is not only time-consuming but also produces a lot of dust, which poses a great threat to the health of teachers and students.

Utility model content

The utility model provides an automatically erasable blackboard, which solves the problem that a large amount of dust is generated in the blackboard.

The blackboard that can be automatically erased is composed of an erasing device, a misting device and a blowing device. The erasing device is driven by a motor through a chain to drive the rubbing roller to reciprocate. The rubbing roller slides on the blackboard through a pulley. The misting device is connected to the pool by a nozzle The water pump is composed of the water pump, the nozzle is located above the blackboard, and there are spray holes at intervals, and the blowing device is located on the side of the blackboard, which is composed of a blower connected to a trumpet-shaped air outlet.

The automatic erasable blackboard of the utility model realizes the automatic erasure of the blackboard through the improvement of the existing blackboard by electromechanical equipment, effectively prevents the generation of dust, has the effect of fast erasing and convenience, and effectively eliminates the need for teachers and students. The physical labor of erasing the blackboard saves time for the teacher to teach.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model;

In the figure: 1 is the motor, 2 is the blackboard, 3 is the nozzle, 4 is the chain, 5 is the rubbing roller, 6 is the pulley, 7 is the blower, 8 is the water pump, 9 is the pool

Detailed ways

Combined with Figure 1, the blackboard that can be automatically erased is composed of an erasing device, a spraying device and a blowing device. The erasing device is driven by a motor 1 through a chain 4 to reciprocate the rubbing roller 5, and the rubbing roller 5 is placed on the blackboard 2 through a pulley 6. Sliding, the mist spraying device is composed of the nozzle pipe 3 connected to the water pump in the pool 9, the nozzle pipe 3 is located above the blackboard 2, and spray holes are spaced apart, the blowing device is located on the side of the blackboard 2, and is composed of a blower 7 connected to a trumpet-shaped air outlet. 1 drives the blackboard for erasing, the blackboard eraser is opened on the blackboard frame and the blackboard eraser brush is attached to the blackboard 2, when the switch is pressed, the water pump 8 sucks water from the pool 9 into the pipeline and drips water from the nozzle hole When the blackboard is wet, the motor 1 starts to move the rubbing roller 5 through the chain to erase the words on the blackboard without generating dust, and then the blower 7 works to dry the water marks on the blackboard 2, so that writing on the blackboard 2 can continue .

Of course, the above description is not a limitation of the present utility model, and the present utility model is not limited to the above-mentioned examples, and changes, modifications, additions or replacements made by those skilled in the art within the essential scope of the present utility model are also acceptable. Should belong to the protection scope of the utility model.

Claims (1)

1. the blackboard that can wipe automatically is made up of erasing apparatus, pouring mist device and blowing device, it is characterized in that: erasing apparatus is wiped roller by motor through chain drive and is moved back and forth; Wiping roller slides on blackboard through pulley; Drench the mist device and be made up of the water pump that jet pipe connects in the pond, jet pipe is positioned at the blackboard top, has spray orifice at interval; Blowing device is positioned at the blackboard side, connects tubaeform air port by hair-dryer and forms.

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