CN106965603B - One kind teaching dust exhaust apparatus - Google Patents

One kind teaching dust exhaust apparatus Download PDF

Info

Publication number
CN106965603B
CN106965603B CN201710285911.7A CN201710285911A CN106965603B CN 106965603 B CN106965603 B CN 106965603B CN 201710285911 A CN201710285911 A CN 201710285911A CN 106965603 B CN106965603 B CN 106965603B
Authority
CN
China
Prior art keywords
dust
motor
dust catcher
connection
blackboard
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.)
Active
Application number
CN201710285911.7A
Other languages
Chinese (zh)
Other versions
CN106965603A (en
Inventor
华斯琦
吴恒宇
张耀心
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Shengfan Information Service Co.,Ltd.
Original Assignee
华斯琦
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 华斯琦 filed Critical 华斯琦
Priority to CN201710285911.7A priority Critical patent/CN106965603B/en
Publication of CN106965603A publication Critical patent/CN106965603A/en
Application granted granted Critical
Publication of CN106965603B publication Critical patent/CN106965603B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43LARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L21/00Blackboard or slate cleaning devices
    • B43L21/02Blackboard or slate cleaning devices with means for absorbing the chalk dust
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00Cleaning by methods involving the use of air flow or gas flow
    • B08B5/04Cleaning by suction, with or without auxiliary action
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43LARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L1/00Repeatedly-usable boards or tablets for writing or drawing
    • B43L1/04Blackboards

Abstract

The present invention proposes a kind of teaching dust exhaust apparatus, solves in the prior art the problem of teacher easily sucks chalk dust, and larger harm is caused to body.The present invention includes upper dust catcher, side dust catcher and lower dust catcher, and upper dust catcher is located at the top of blackboard, and side dust catcher is located at the both sides of blackboard, and lower dust catcher is located at the lower section of blackboard.The present invention has following beneficial effect:Chalk dust is sucked into dust catcher and collected, reduces contact of the teacher to dust, dust is reduced and is endangered to caused by teacher's body;Intelligence degree is high, matches with existing teaching equipment;Shading and lighting device are set, avoid blackboard reflective light or light excessively dark.

Description

One kind teaching dust exhaust apparatus
Technical field
The present invention relates to teaching equipment, particularly relates to a kind of teaching dust exhaust apparatus.
Background technology
School teacher is attended class and writing on the blackboard is still being write on blackboard using chalk at present, and many is had when wiping writing with blackboard eraser Chalk foam dust, chalk ash composition are a kind of white depositions of calcium sulfate, it is not easy to are decomposed, particle is bigger than dust.Powder Harm of the pen ash to the lung of teacher is most commonly seen, and in teaching process, chalk dust is easy to be inhaled into lung, and majority is delayed at lung In bubble, by a series of stimulation, chemistry and immune effect, lung can be caused to lose, including inflammation in respiratory system and lung Ventilatory function declines, and common PUD D has:Chronic, acute pneumonia, lung cancer, pneumoconiosis etc., contain titanium dioxide in chalk dust Silicon, be inhaled into lung, lung dissociate dioxide-containing silica 1 percent pulmonary fibrosis formed above dust so that Alveolar fibrosis, lung's respiratory function is caused to decline, so the life-span of people can be shortened by sucking excessive chalk dust for a long time.
The content of the invention
The present invention proposes a kind of teaching dust exhaust apparatus, solves in the prior art that teacher easily sucks chalk dust, to body The problem of causing larger harm.
The technical proposal of the invention is realized in this way:One kind teaching dust exhaust apparatus, including upper dust catcher, side dust catcher and Lower dust catcher, upper dust catcher are located at the top of blackboard, and side dust catcher is located at the both sides of blackboard, and lower dust catcher is located under blackboard Side;
Described upper dust catcher is provided with air inlet, and air inlet connects with gas hood, and gas hood connects with gas outlet, air inlet with Air filtering plate is equipped with gas outlet, gas hood is interior to be sequentially provided with dust-leading board, fan blade, dust-filtering plate and dust sucting motor, gas in airintake direction Dust collecting trough is provided between cover and dust-leading board, dust collecting trough and the first collecting plate coordinate, and the top of dust collecting trough is provided with deep bead, deep bead On be provided with filter opening, fan blade is connected with dust sucting motor;
Described side dust catcher includes air inlet, and air inlet connects with gas hood, and gas hood connects with gas outlet, and air inlet is with going out Air filtering plate is equipped with gas port, gas hood is interior to be sequentially provided with fan blade, dust-filtering plate and dust sucting motor in airintake direction, and the both sides of fan blade are set Have deep bead, be provided with filter opening on deep bead, the lower section of fan blade is provided with dust collecting trough, and dust collecting trough and the second collecting plate coordinate, fan blade with Dust sucting motor connects;
Described lower dust catcher includes air inlet, and air inlet connects with gas hood, and gas hood connects with gas outlet, and air inlet is with going out Air filtering plate is equipped with gas port, gas hood is interior to be sequentially provided with fan blade, dust-leading board, dust-filtering plate and dust sucting motor, gas hood in airintake direction It is provided with dust collecting trough between dust-leading board, dust collecting trough and the first collecting plate coordinate, and the top of dust collecting trough is provided with deep bead, on deep bead Filter opening is provided with, fan blade is connected with dust sucting motor.
The side of described side dust catcher is provided with display screen, control panel and loudspeaker, display screen and loudspeaker with control Device connection processed, controller are connected with control panel, dust sucting motor.
The first motor and the second motor, the first motor and first volume axis connection, the first volume are provided with described upper dust catcher Axle is provided with projection screen, the second motor and volume Two axis connection, and the second spool, which is provided with, hides dirt curtain;First motor and the second electricity Machine is connected with controller.
Described side dust catcher is provided with light-shield cover, unrestrained light lamp and optical sensor, and the 3rd motor and gear are provided with light-shield cover Tabula rasa, the 3rd motor are connected with light barrier;3rd motor, unrestrained light lamp and optical sensor are connected with controller.
The top of described blackboard is provided with signal receiver, and signal receiver is connected with controller, signal receiver and letter Number transmitter coordinates, and signal projector is located in blackboard eraser, and gravity sensor is provided with blackboard eraser.
The present invention has following beneficial effect:Chalk dust is sucked into dust catcher and collected, reduces teacher to powder The contact of dirt, reduce dust and endangered to caused by teacher's body;Intelligence degree is high, matches with existing teaching equipment;Set Shading and lighting device, avoid blackboard reflective light or light excessively dark.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is front view of the present invention.
Fig. 2 is Fig. 1 A-A direction views.
Fig. 3 is Fig. 1 B-B direction view.
Fig. 4 is upper deduster front view.
Fig. 5 is side deduster top view.
Fig. 6 is side deduster front view.
Fig. 7 is lower deduster front view.
Fig. 8 is the first collecting plate structure chart.
Fig. 9 is the second collecting plate structure chart.
Figure 10 is wiping blackboard structure figure.
In figure:1- ground, 2- metopes, the upper dust catchers of 3-, 4- sides dust catcher, dust catcher under 5-, 6- blackboards, 7- display screens, 8- control panels, the motors of 9- first, the spools of 10- first, 11- projection screens, the motors of 12- second, the spools of 13- second, 14- hide dirt Curtain, 15- gas hoods, 16- air inlets, 17- air filtering plates, 18- dust-leading boards, 19- dust collecting troughs, 20- deep beads, 21- filter openings, 22- filter dirt Plate, 23- dust sucting motors, 24- fan blades, the collecting plates of 25- first, the collecting plates of 26- second, 27- blackboard erasers, 28- gravity sensors, 29- signal projectors, 30- signal receivers, 31- loudspeakers, the motors of 32- the 3rd, 33- light barriers, 34- overflow light lamp, and 35- is in the light Cover, 36- gas outlets.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not paid Embodiment, belong to the scope of protection of the invention.
As shown in Fig. 1 ~ 10, the present invention proposes a kind of teaching dust exhaust apparatus, including upper dust catcher 3, the and of side dust catcher 4 Lower dust catcher 5, upper dust catcher 3 are located at the top of blackboard 6, and side dust catcher 4 is located at the both sides of blackboard 6, and lower dust catcher 5 is located at blackboard 6 lower section;
Described upper dust catcher 3 is provided with air inlet 16, and air inlet 16 connects with gas hood 15, and gas hood 15 connects with gas outlet 36 Logical, for air inlet 16 with being equipped with air filtering plate 17 on gas outlet 17, gas hood 15 is interior to be sequentially provided with dust-leading board 18, fan blade in airintake direction 24th, dust-filtering plate 22 and dust sucting motor 23, dust collecting trough 19, the collecting plate of dust collecting trough 19 and first are provided between gas hood 15 and dust-leading board 18 25 coordinate, and the top of dust collecting trough 19 is provided with deep bead 20, is provided with filter opening 21 on deep bead 20, fan blade 24 connects with dust sucting motor 23 Connect;
Described side dust catcher 4 includes air inlet 16, and air inlet 16 connects with gas hood 15, and gas hood 15 connects with gas outlet 36 Logical, for air inlet 16 with being equipped with air filtering plate 17 on gas outlet 17, gas hood 15 is interior to be sequentially provided with fan blade 24, dust-filtering plate in airintake direction 22 and dust sucting motor 23, the both sides of fan blade 24 be provided with deep bead 20, be provided with filter opening 21 on deep bead 20, the lower section of fan blade 24 is provided with Dust collecting trough 19, dust collecting trough 19 coordinate with the second collecting plate 26, and fan blade 24 is connected with dust sucting motor 23;
Described lower dust catcher 5 includes air inlet 16, and air inlet 16 connects with gas hood 15, and gas hood 15 connects with gas outlet 36 Logical, for air inlet 16 with being equipped with air filtering plate 17 on gas outlet 17, gas hood 15 is interior to be sequentially provided with fan blade 24, dust-leading board in airintake direction 18th, dust-filtering plate 22 and dust sucting motor 23, dust collecting trough 19, the collecting plate of dust collecting trough 19 and first are provided between gas hood 15 and dust-leading board 18 25 coordinate, and the top of dust collecting trough 19 is provided with deep bead 20, is provided with filter opening 21 on deep bead 20, fan blade 24 connects with dust sucting motor 23 Connect.
The side of described side dust catcher 4 is provided with display screen 7, control panel 8 and loudspeaker 31, display screen 7 and loudspeaker 31 are connected with controller, and controller is connected with control panel 8, dust sucting motor 23.
The first motor 9 and the second motor 12 are provided with described upper dust catcher 3, the first motor 9 is connected with the first spool 10, First spool 10 is provided with projection screen 11, and the second motor 12 is connected with the second spool 13, and the second spool 13, which is provided with, hides dirt curtain 14;First motor 9 and the second motor 12 are connected with controller.
Described side dust catcher 4 is provided with light-shield cover 35, unrestrained light lamp 34 and optical sensor, and the 3rd electricity is provided with light-shield cover 35 Machine 32 and light barrier 33, the 3rd motor 32 are connected with light barrier 33;3rd motor 32, unrestrained light lamp 34 and optical sensor with control Device connects.
The top of described blackboard 6 is provided with signal receiver 30, and signal receiver 30 is connected with controller, signal receiver 30 coordinate with signal projector 29, and signal projector 29 is located in blackboard eraser 27, and gravity sensor 28 is provided with blackboard eraser 27.
Operation instruction of the present invention:Side dust catcher 3 is installed on ground 1, and upper dust catcher 3 and lower dust catcher 5 are installed on two Between side dust catcher 3, lower dust catcher 5 is slightly above ground 1, and upper dust catcher 3, side dust catcher 4 and lower dust catcher 5 connect with metope 2 Touch and blackboard 6 is enclosed in centre, when with 27 blackboard wiping 6 of blackboard eraser, many chalk dusts can be kicked up, now controller control Dust sucting motor 23 processed is started working, and dust sucting motor 23 drives fan blade 24 to rotate, and the air with chalk dust is sucked into gas hood 15, empty Gas is rotated at deep bead 20, and chalk dust is gradually assembled and fallen into dust collecting trough 19, and air is discharged under the filtering of dust-filtering plate 22 Gas hood 15, air filtering plate 17 prevent the object of large volume from entering gas inlet cover 15 and destroying fan blade 24, and the air filtering plate 17 of lower dust catcher 5 rises simultaneously The first collecting plate 25 is provided with the dust collecting trough 19 of the effect of support, upper dust catcher 3 and lower dust catcher 5, before the first collecting plate 25 The ring-type to be engaged with dust-leading board 18 is held, the rear end of the first collecting plate 25 has been the baffle plate and handle of sealing process, and first collects Dirt plate 25 can release from upper dust catcher 3 and lower dust catcher 5, the chalk dust gathered in plate be cleared up, the collection of side dust catcher 4 The second collecting plate 26 is provided with dirt groove 19, the front end of the second collecting plate 26 is the strip being engaged with dust collecting trough 19, and second collects The rear end of dirt plate 26 has been the baffle plate and handle of sealing process, and the second collecting plate 26 can release from side dust catcher 4, to collecting in plate Poly- chalk dust is cleared up.
The side of side dust catcher 4 is provided with display screen 7, control panel 8 and loudspeaker 31, and time, date are shown on display screen 7 With course arrangement, control panel 8 realizes and adjusted that controller is broadcast according to the time by loudspeaker 31 by controller to display screen 7 The sound such as the tinkle of bells after class or multimedia, broadcast is put, while is adjustably controlled panel 8, control panel 8 controls controller, right Dust sucting motor 23 is controlled.
Adjustment control panel 8 controls controller, and controller controls the first motor 9 to rotate, and the first motor 9 is by the first spool 10 On projection screen 11 pack up or put down, be combined with multimedia teaching facility, controller controls the second motor 12 to rotate, the Screening dirt cloth 14 on second spool 13 is packed up or put down by two motors 12, when the dust catcher of blackboard wiping 6 works, is formed With respect to one confined space, there is more preferable pick-up performance.
When in use, light outside window can impinge upon on blackboard 6 blackboard 6, when light is too strong, can make blackboard 6 Produce reflective, or when night, the lighting deficiency in classroom, the glazed thread of blackboard 6 is dim, now passes through light sensing Intensity signal at left and right sides of device detection blackboard, and controller is passed to, when light is too strong, controller controls 32 turns of the 3rd motor Dynamic, the 3rd motor 32 drives light barrier 33 to stretch into side dust catcher 4, and light outside window is blocked, when rather dark, control The unrestrained light lamp 34 of device control is opened, and illumination is provided for blackboard 6.
During 27 blackboard wiping 6 of blackboard eraser, gravity sensor 28 detects the motor message of blackboard eraser 27, is launched by signal Device 29 is sent to signal receiver 30, and the signal received is passed to controller, controller control dust catcher by signal receiver 30 Working condition.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.

Claims (5)

1. one kind teaching dust exhaust apparatus, it is characterised in that:Including upper dust catcher(3), side dust catcher(4)With lower dust catcher(5), on Dust catcher(3)Located at blackboard(6)Top, side dust catcher(4)Positioned at blackboard(6)Both sides, lower dust catcher(5)Located at blackboard (6)Lower section;
Described upper dust catcher(3)It is provided with air inlet(16), air inlet(16)With gas hood(15)Connection, gas hood(15)With outlet Mouthful(36)Connection, air inlet(16)With gas outlet(36)On be equipped with air filtering plate(17), gas hood(15)Inherent airintake direction is successively Provided with dust-leading board(18), fan blade(24), dust-filtering plate(22)And dust sucting motor(23), gas hood(15)With dust-leading board(18)Between be provided with Dust collecting trough(19), dust collecting trough(19)With the first collecting plate(25)Coordinate, dust collecting trough(19)Top be provided with deep bead(20), keep out the wind Plate(20)On be provided with filter opening(21), fan blade(24)With dust sucting motor(23)Connection;
Described side dust catcher(4)Including air inlet(16), air inlet(16)With gas hood(15)Connection, gas hood(15)With gas outlet (36)Connection, air inlet(16)With gas outlet(36)On be equipped with air filtering plate(17), gas hood(15)Inherent airintake direction is set successively There is fan blade(24), dust-filtering plate(22)And dust sucting motor(23), fan blade(24)Both sides be provided with deep bead(20), deep bead(20)On It is provided with filter opening(21), fan blade(24)Lower section be provided with dust collecting trough(19), dust collecting trough(19)With the second collecting plate(26)Coordinate, fan blade (24)With dust sucting motor(23)Connection;
Described lower dust catcher(5)Including air inlet(16), air inlet(16)With gas hood(15)Connection, gas hood(15)With gas outlet (36)Connection, air inlet(16)With gas outlet(36)On be equipped with air filtering plate(17), gas hood(15)Inherent airintake direction is set successively There is fan blade(24), dust-leading board(18), dust-filtering plate(22)And dust sucting motor(23), gas hood(15)With dust-leading board(18)Between be provided with collection Dirt groove(19), dust collecting trough(19)With the first collecting plate(25)Coordinate, dust collecting trough(19)Top be provided with deep bead(20), deep bead (20)On be provided with filter opening(21), fan blade(24)With dust sucting motor(23)Connection.
2. teaching dust exhaust apparatus according to claim 1, it is characterised in that:Described side dust catcher(4)Side be provided with Display screen(7), control panel(8)And loudspeaker(31), display screen(7)And loudspeaker(31)It is connected with controller, controller With control panel(8), dust sucting motor(23)Connection.
3. teaching dust exhaust apparatus according to claim 2, it is characterised in that:Described upper dust catcher(3)Inside it is provided with first Motor(9)With the second motor(12), the first motor(9)With the first spool(10)Connection, the first spool(10)It is provided with projection screen Cloth(11), the second motor(12)With the second spool(13)Connection, the second spool(13)It is provided with and hides dirt curtain(14);First motor (9)With the second motor(12)It is connected with controller.
4. teaching dust exhaust apparatus according to claim 2, it is characterised in that:Described side dust catcher(4)It is provided with and is in the light Cover(35), unrestrained light lamp(34)And optical sensor, light-shield cover(35)Inside it is provided with the 3rd motor(32)And light barrier(33), the 3rd motor (32)With light barrier(33)Connection;3rd motor(32), unrestrained light lamp(34)It is connected with optical sensor with controller.
5. teaching dust exhaust apparatus according to claim 2, it is characterised in that:Described blackboard(6)Top be provided with signal Receiver(30), signal receiver(30)It is connected with controller, signal receiver(30)With signal projector(29)Coordinate, signal Transmitter(29)It is located at blackboard eraser(27)It is interior, blackboard eraser(27)It is interior to be provided with gravity sensor(28).
CN201710285911.7A 2017-04-27 2017-04-27 One kind teaching dust exhaust apparatus Active CN106965603B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710285911.7A CN106965603B (en) 2017-04-27 2017-04-27 One kind teaching dust exhaust apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710285911.7A CN106965603B (en) 2017-04-27 2017-04-27 One kind teaching dust exhaust apparatus

Publications (2)

Publication Number Publication Date
CN106965603A CN106965603A (en) 2017-07-21
CN106965603B true CN106965603B (en) 2018-04-06

Family

ID=59332746

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710285911.7A Active CN106965603B (en) 2017-04-27 2017-04-27 One kind teaching dust exhaust apparatus

Country Status (1)

Country Link
CN (1) CN106965603B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU500477A1 (en) * 2021-06-25 2022-01-28 Univ Zhengzhou Aeronautics Auxiliary device for English lessons

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108944190A (en) * 2018-07-20 2018-12-07 佛山科枫文化传播有限公司 A kind of education auxiliary blackboard
CN114103530A (en) * 2021-12-21 2022-03-01 河北华发教育科技股份有限公司 Intelligent blackboard with interchangeable main screen and auxiliary screen

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1079694A (en) * 1993-04-03 1993-12-22 刘荣武 New auto-erase blackboard
CN2651006Y (en) * 2003-08-26 2004-10-27 兰润发 Dustproof device of teaching board
CN2680470Y (en) * 2003-08-08 2005-02-23 柯荣贵 Dust-suction type black/white board
CN201124671Y (en) * 2007-12-10 2008-10-01 王足旭 Dust-less blackboard
CN103192629A (en) * 2013-03-14 2013-07-10 于希萌 Dust-recovery writing device
CN203438719U (en) * 2013-08-08 2014-02-19 中国石油大学(华东) Blackboard dust removing system
CN104417187A (en) * 2013-08-29 2015-03-18 李衍鼎 Dust collection blackboard slot
CN204398650U (en) * 2014-12-02 2015-06-17 无锡市南长区科技创业服务中心 A kind of blackboard with groove for collecting chalk dust
CN204845246U (en) * 2015-07-06 2015-12-09 南京工程学院 Dust removal lift blackboard
CN205112753U (en) * 2015-11-23 2016-03-30 马春华 Electronic dust absorption illumination blackboard

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080062631A1 (en) * 2006-09-07 2008-03-13 Dilip Bhavnani Multi-function desktop assembly

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1079694A (en) * 1993-04-03 1993-12-22 刘荣武 New auto-erase blackboard
CN2680470Y (en) * 2003-08-08 2005-02-23 柯荣贵 Dust-suction type black/white board
CN2651006Y (en) * 2003-08-26 2004-10-27 兰润发 Dustproof device of teaching board
CN201124671Y (en) * 2007-12-10 2008-10-01 王足旭 Dust-less blackboard
CN103192629A (en) * 2013-03-14 2013-07-10 于希萌 Dust-recovery writing device
CN203438719U (en) * 2013-08-08 2014-02-19 中国石油大学(华东) Blackboard dust removing system
CN104417187A (en) * 2013-08-29 2015-03-18 李衍鼎 Dust collection blackboard slot
CN204398650U (en) * 2014-12-02 2015-06-17 无锡市南长区科技创业服务中心 A kind of blackboard with groove for collecting chalk dust
CN204845246U (en) * 2015-07-06 2015-12-09 南京工程学院 Dust removal lift blackboard
CN205112753U (en) * 2015-11-23 2016-03-30 马春华 Electronic dust absorption illumination blackboard

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU500477A1 (en) * 2021-06-25 2022-01-28 Univ Zhengzhou Aeronautics Auxiliary device for English lessons

Also Published As

Publication number Publication date
CN106965603A (en) 2017-07-21

Similar Documents

Publication Publication Date Title
CN106965603B (en) One kind teaching dust exhaust apparatus
CN104989246B (en) Door capable of purifying air
CN203829832U (en) Washing air purifier
CN207963030U (en) Air interchanger
CN108067067A (en) A kind of roof air cleaning unit
CN205684464U (en) A kind of chemical laboratory ventilation duct
CN104654484B (en) Purification and dust collecting device for indoor and outdoor air circulation
CN107146526A (en) Outdoor air purifies medium intelligent integrated machine
CN204693640U (en) A kind of air cleaning unit
CN206919239U (en) Simple haze device for filtering indoor air
CN216278692U (en) Fire-fighting and smoke-discharging dual-purpose ventilator
CN206633762U (en) A kind of air purifier for being installed on roof of the vehicle
CN205894430U (en) Decontaminable air's furred ceiling
CN209386482U (en) A kind of ventilation blower with air filtering function
CN105708022B (en) A kind of peaked cap being embedded in air cleaner
CN207778649U (en) A kind of intelligent air purifying haze screen window
CN206934958U (en) A kind of dust atmosphere detects purifier
CN209744585U (en) Dust adsorption type air humidification purifier
CN206859999U (en) One kind is except PM2.5 sound insulation ventilated energy-saving windows
CN206478764U (en) A kind of high efficiency filter environmental protective air purifier
CN206831737U (en) A kind of integrating device with air-cleaning function and illumination functions
CN207103384U (en) Air purifying type vent cabinet
CN207247450U (en) A kind of health environment protection ventilating fan
CN107830583A (en) Intelligent fresh air blower fan
CN205422485U (en) Novel compound screen window of antifog haze of drop -down formula

Legal Events

Date Code Title Description
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20200715

Address after: 343100 Ji'an County, Jiangxi province Ji'an County North source village official village Tangshan natural village 21

Patentee after: Luo Jun

Address before: Shangqiu City Suiyang District Cultural Road 476000 Henan province No. 16 Building No. 17

Patentee before: Hua Siqi

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20201027

Address after: 221005 room 316, block A1, Huaihai culture and Technology Industrial Park, Shenchang, Gulou District, Xuzhou City, Jiangsu Province

Patentee after: Jiangsu Shengfan Information Service Co.,Ltd.

Address before: 343100 Ji'an County, Jiangxi province Ji'an County North source village official village Tangshan natural village 21

Patentee before: Luo Jun