CN203623240U - Dust-free electric chalk eraser - Google Patents

Dust-free electric chalk eraser Download PDF

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Publication number
CN203623240U
CN203623240U CN201320835990.1U CN201320835990U CN203623240U CN 203623240 U CN203623240 U CN 203623240U CN 201320835990 U CN201320835990 U CN 201320835990U CN 203623240 U CN203623240 U CN 203623240U
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CN
China
Prior art keywords
dust
brush
absorbing tube
free electric
handle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201320835990.1U
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Chinese (zh)
Inventor
何姝贤
李易柯
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Individual
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Individual
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Publication date
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Priority to CN201320835990.1U priority Critical patent/CN203623240U/en
Application granted granted Critical
Publication of CN203623240U publication Critical patent/CN203623240U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

A dust-free electric chalk eraser for preventing chalk dust from flying around when a blackboard is cleaned comprises a dust suction cylinder, wherein a dust suction fan is installed in the dust suction cylinder. The dust-free electric chalk eraser is characterized in that a detachable dust collection handle is connected to the dust suction cylinder, a brush motor is installed in the dust suction cylinder, the dust suction fan is installed in the middle of a main shaft of the brush motor, a brush is installed at the end of the main shaft of the brush motor, a turbofan is further installed on the brush motor, a dust collection bag is installed in the dust collection handle, the tail end of the dust collection handle is provided with a vent hole, and a screen is arranged on the vent hole. According to the current situation that pollution is easily caused when the blackboard is cleaned and the principles of a dust collector, the dust-free electric chalk eraser is manufactured. When a student cleans the blackboard, generated dust is directly sucked by the device to enter the storage bag, so that no dust is dispersed, the harm of the dust to students and teachers physically and mentally is completely eradicated, and the physical and mental health of the students and the teachers is protected.

Description

Dustless electric chalkboard eraser
Technical field
The utility model relates to a kind of teaching aid.
Background technology
Go up at ordinary times class hour, when teacher teaches writing on the blackboard, can use chalk, in the time wiping chalk writing, can cause dust from flying like this.In before in classroom, on row's desktop, be all chalk dust.This situation has caused no small injury to student and teacher's body and mind.Therefore have in teacher's occupational disease: pneumoconiosis etc.
Summary of the invention
Chalk dust for fear of erasing the board when flies upward everywhere, and the technical solution adopted in the utility model is:
A kind of dustless electric chalkboard eraser, comprise dust-absorbing tube, dust absorption fan is equipped with in dust-absorbing tube inside, it is characterized in that: on dust-absorbing tube, be connected with detachable control of dust handle, brush head motor is equipped with in dust-absorbing tube inside, a dust absorption fan is equipped with in the centre of brush head motor main shaft, and brush is equipped with in the end of brush head motor main shaft, and turbofan is also housed above brush head motor; A dust bag is equipped with in control of dust handle inside, and the tail end of control of dust handle has steam vent, has filter above steam vent.
Further, the inner power supply changeover device in addition of described dust-absorbing tube, has hard bristle above described brush, and brush is a circular sheet, distributes porose above brush.
The utility model, for the present situation that erases the board and easily pollute, according to the principle of dust catcher, has been made this device.In the process erasing the board student, the dust of generation is directly absorbed and enters in collecting bag by device, no longer produces dust, has stopped the injury of dust to student and teacher's body and mind.Protect student and teacher's physical and mental health.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In accompanying drawing: 1, dust-absorbing tube; 2, control of dust handle; 3, steam vent; 4, filter; 5, dust bag; 6, connector; 7, turbofan; 8, switch; 9, power supply changeover device; 10, brush head motor; 11, dust absorption fan; 12, brush.
The specific embodiment
Socket switches on power, and opens switch 8, and brush head motor 10 and turbofan 7 will be rotated.Brush 12 in dust-absorbing tube 1 rotates fast, and bristle contacts with blackboard surface, and the chalk dust of blackboard is swept down, and chalk dust is entered dust-absorbing tube 1 under the negative-pressure sucking effect of dust absorption fan 11.Turbofan 7 fast rotational produce a larger air negative pressure, and chalk dust will enter dust bag 5.Dust bag 5 is after chalk dust filtering, residue with the air of micro-chalk dust along with steam vent 3 is discharged.
On the head end of dust-absorbing tube 1, have some breach, porose on brush 12, such design can make air-flow enter in cylinder along the hole on breach, brush 12 and the gap between brush 12 and dust-absorbing tube 1.Control of dust handle 2 is detachable, and the connector 6 of control of dust handle 2 ends is connected with dust-absorbing tube 1.
With internal battery, but the blower fan that the inside is used just can have better pick-up performance with large electric current.Battery does not provide so large electric current, adds battery itself very heavy, so do not use built-in battery yet.What use due to this device is external power supply, and for the sake of security, the utility model has used potential device, has become the voltage to human-body safety.But in use, occurred unavoidably mobile restricted problem, if there is sufficiently long power line, it is no problem erasing the board.
Before use, the socket access power supply on 220 volts of power supply changeover devices 9.Open switch 8, driven by motor brush 12 rotates, and just can normally use.

Claims (2)

1. a dustless electric chalkboard eraser, comprise dust-absorbing tube (1), dust absorption fan (11) is equipped with in dust-absorbing tube (1) inside, it is characterized in that: on dust-absorbing tube (1), be connected with detachable control of dust handle (2), brush head motor (10) is equipped with in dust-absorbing tube (1) inside, a dust absorption fan (11) is equipped with in the centre of brush head motor (10) main shaft, and brush (12) is equipped with in the end of brush head motor (10) main shaft, and brush head motor (10) is also equipped with turbofan (7) above; A dust bag (5) is equipped with in control of dust handle (2) inside, and the tail end of control of dust handle (2) has steam vent (3), and steam vent (3) has filter (4) above.
2. dustless electric chalkboard eraser according to claim 1, it is characterized in that: the inner power supply changeover device (9) in addition of described dust-absorbing tube (1), described brush (12) has hard bristle above, and brush (12) is a circular sheet, and brush (12) distributes porose above.
CN201320835990.1U 2013-12-18 2013-12-18 Dust-free electric chalk eraser Expired - Fee Related CN203623240U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320835990.1U CN203623240U (en) 2013-12-18 2013-12-18 Dust-free electric chalk eraser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320835990.1U CN203623240U (en) 2013-12-18 2013-12-18 Dust-free electric chalk eraser

Publications (1)

Publication Number Publication Date
CN203623240U true CN203623240U (en) 2014-06-04

Family

ID=50809753

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320835990.1U Expired - Fee Related CN203623240U (en) 2013-12-18 2013-12-18 Dust-free electric chalk eraser

Country Status (1)

Country Link
CN (1) CN203623240U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104015530A (en) * 2014-06-18 2014-09-03 华南农业大学 Motor-driven dust-free chalk eraser
CN110027051A (en) * 2019-04-23 2019-07-19 浙江安尚电气有限公司 A kind of machine and wood cutting
CN115320275A (en) * 2022-08-29 2022-11-11 刘耕 Blackboard chalk groove

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104015530A (en) * 2014-06-18 2014-09-03 华南农业大学 Motor-driven dust-free chalk eraser
CN110027051A (en) * 2019-04-23 2019-07-19 浙江安尚电气有限公司 A kind of machine and wood cutting
CN115320275A (en) * 2022-08-29 2022-11-11 刘耕 Blackboard chalk groove

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140604

Termination date: 20141218

EXPY Termination of patent right or utility model