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Dust absorption spray type blackboard eraser

A blackboard eraser and spray-type technology, which is applied in the field of blackboard wiping tools and blackboard erasers, can solve problems such as hard to read blackboard characters, dusty classrooms, and clean blackboards, so as to improve learning efficiency, intuitive working status, and reduce hazards.

Inactive Publication Date: 2013-07-17
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most schools in the market use ordinary traditional blackboard erasers, which not only cause dust to fly in the classroom, but also always make it difficult to wipe the blackboard clean. Naturally, it has also dropped a lot

Method used

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  • Dust absorption spray type blackboard eraser
  • Dust absorption spray type blackboard eraser
  • Dust absorption spray type blackboard eraser

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] In this embodiment, see figure 1 with figure 2 , A dust-absorbing spray type blackboard eraser, including a blackboard eraser wiping surface outer shell 18, the outer surface of the blackboard eraser wiping surface outer shell 18 is provided with a brush 1, and the blackboard eraser wiping surface outer shell 18 is provided on the inner surface of the inner surface side. There are fixedly connected spray chamber I and dust storage chamber II. Spray chamber I is adjacent to the blackboard eraser wiping surface outer shell 18. A series of ventilation slots 20 are provided on the outer surface of the blackboard eraser wiping surface outer shell 18, and the dust suction ports 19 are arranged and distributed. In each ventilating groove 20, the dust suction port 19 and the brush 1 are distributed crosswise, and the dust suction port 19 is connected to the dust storage room II. At the same time, the dust dumping outlet 6 is provided on the side wall of the dust storage room II t...

Embodiment 2

[0019] This embodiment is basically the same as the first embodiment, and the special features are:

[0020] In this embodiment, see image 3 with Figure 4 , The brush driving equipment room Ⅲ is also connected to the outside of the dust storage room Ⅱ, and the motor 15, gear 8 and rack 5 are arranged in the brush driving equipment room Ⅲ. The transmission shaft 16 of the motor 15 and the gear shaft 7 of the gear 8 pass The coupling 17 is connected so that the gear 8 rotates with the drive shaft 16 of the motor 15. The gear 8 meshes with the rack 5 to form a rack and pinion transmission mechanism, which converts the rotational motion output by the motor 15 into linear movement. The brush 1 is fixedly connected, the position of the motor 15 relative to the bristle driving equipment room III is fixed, the motor 15 rotates forward and backward, driving the rack 5 to reciprocate linearly in the bristle driving equipment chamber III, and then control the reciprocating linear movement ...

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Abstract

The invention discloses a dust absorption spray type blackboard eraser. The dust absorption spray type blackboard eraser is characterized in that one inner side surface of a shell of an erasing surface of the blackboard eraser is provided with a spraying chamber and a dust storage chamber which are fixedly connected, wherein the spraying chamber is next to the shell of the erasing surface of the blackboard eraser, dust absorption ports in the outer surface of the shell of the erasing surface of the blackboard eraser and hair brushes are crosswise distributed, a dust absorption fan and a dust absorption motor are arranged in the dust storage chamber, and when the hair brushes are used for erasing a blackboard, the dust absorption motor receives signals and begins to rotate to drive the dust absorption fan to rotate, so that dust erased off from the blackboard is absorbed into the dust storage chamber through the dust absorption ports; at least a nozzle is arranged in the spraying chamber, the nozzle, a water storage tank and a pressure-sensitive sensor form a sprayer, when the blackboard is not erased cleanly, a user applies an external force to the blackboard eraser, so that the pressure-sensitive sensor receives signals and further controls the nozzle to spray out water mist from the water storage tank for wetting the blackboard, and then the wetted blackboard is erased. The dust absorption spray type blackboard eraser has the advantages of good dust removal effect, reducing the chalk dust suction volume of teachers and students, cleanly erasing the blackboard and improving the learning efficiency of the students in a classroom.

Description

technical field [0001] The invention relates to a blackboard wiping tool, in particular to an enhanced wiping blackboard eraser with a semi-automatic control system, which is used in the technical field of blackboard dust removal. Background technique [0002] "One piece of chalk, three feet of podium", this is a sincere compliment to teachers, but they don't know that there are countless worries hidden behind these praises; there is no better education method that can replace chalk blackboard writing in the education field, but The "chalk syndrome" brought about by writing on the blackboard has become the number one potential safety hazard for teachers and students. According to the survey of relevant departments, it takes at least 16 years for a student to finish college from elementary school. This is the golden period of growth and development, but he is constantly harmed by chalk dust. About one year, most of the time of life will eat "chalk dust". Although teachers a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43L21/02
Inventor 刘江山余光伟昌海培肖琳刘东晓李琳黄正隆
Owner SHANGHAI UNIV
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