CN109263378A - A kind of automatic flushing device for classroom blackboard - Google Patents

A kind of automatic flushing device for classroom blackboard Download PDF

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Publication number
CN109263378A
CN109263378A CN201811040632.5A CN201811040632A CN109263378A CN 109263378 A CN109263378 A CN 109263378A CN 201811040632 A CN201811040632 A CN 201811040632A CN 109263378 A CN109263378 A CN 109263378A
Authority
CN
China
Prior art keywords
water pipe
blackboard body
rotary electric
blackboard
electric machine
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.)
Pending
Application number
CN201811040632.5A
Other languages
Chinese (zh)
Inventor
杨玲燕
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.)
Tao Zhuang Primary School Jiashan County
Original Assignee
Tao Zhuang Primary School Jiashan County
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 Tao Zhuang Primary School Jiashan County filed Critical Tao Zhuang Primary School Jiashan County
Priority to CN201811040632.5A priority Critical patent/CN109263378A/en
Publication of CN109263378A publication Critical patent/CN109263378A/en
Pending legal-status Critical Current

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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

Abstract

The present invention relates to teaching equipment technical field, specifically a kind of automatic flushing device for classroom blackboard, including blackboard body, water pipe, baffle, water feeding machine structure, rotating mechanism, spring, elevating mechanism, third rotary electric machine and dedusting mechanism;The present invention drives fixed column to move up and down along the surface of blackboard body by setting elevating mechanism, so that the first cotton in fixed column clears up blackboard body automatically, convenient and efficient, chalk powder will not be flown upward everywhere;Water is sent into water pipe by the way that water feeding machine structure is arranged, and then water is leaked to from first through hole to the surface of blackboard body, blackboard body is cleaned;Fixed column is rotated by the third rotary electric machine of setting, so that the surface of the second cotton and blackboard body fits closely, then it is heated by electrical bar so that the second cotton generates heat, it is moved up and down again by the second cotton on blackboard body surface, quickly moisture is evaporated, the quick scouring to blackboard body is realized, is quickly evaporated function.

Description

A kind of automatic flushing device for classroom blackboard
Technical field
The present invention relates to teaching equipment technical field, especially a kind of automatic flushing device for classroom blackboard.
Background technique
Blackboard is generally used made of plank or ground glass etc., can be write with the specific writing material such as chalk above Word, plate face is hard, is chiefly used in imparting knowledge to students.
However blackboard is when in use, when teacher's writing on the blackboard writes full, needs slowly to wipe the writing on blackboard using blackboard eraser It removes, time-consuming and laborious, and exist and wipe sordid problem, when erasing the board, chalk powder flies everywhere, is unfavorable for exhaling for student and teacher Inhale road health.
The present invention be exactly in order to solve problem above and carry out improvement.
Summary of the invention
For the problems of the prior art, the present invention provides a kind of easy to operate, using flexible, can be automatic to blackboard The automatic flushing device for classroom blackboard cleared up, chalk powder is avoided to fly upward everywhere.
The present invention is that technical solution used by solving its technical problem is:
A kind of automatic flushing device for classroom blackboard, including blackboard body, water pipe, baffle, water feeding machine structure, rotation Mechanism, spring, elevating mechanism, third rotary electric machine and dedusting mechanism are fixed with the water storage at the top of the blackboard body Pipe;
The baffle is set to the inside of the water pipe, and the baffle is to obstruct the water pipe;
The water feeding machine structure is set to the side of the blackboard body, and the water feeding machine structure is connected with one end of the water pipe It is logical;
The rotating mechanism is set to the other end that the water pipe deviates from the water feeding machine structure, and the rotating mechanism passes through institute It states water pipe to be fixedly connected with one end of the baffle, the rotating mechanism is to drive the baffle to move;
The spring is set to the inside of the water pipe, and the spring deviates from the another of the rotating mechanism with the baffle One end is fixedly connected;
The elevating mechanism be set to the relatively described water feeding machine structure of the blackboard body the other side, the elevating mechanism to The dedusting mechanism is driven to move up and down;
One end of the third rotary electric machine is fixedly connected with the elevating mechanism;
The other end of the dedusting mechanism with the third rotary electric machine away from the elevating mechanism is fixedly connected, described to remove Dirt mechanism and the surface of the blackboard body fit closely.
Further, the inside of the water pipe is equipped with catch basin, and it is logical that the bottom of the water pipe offers multiple first Hole, for the linear array distribution of first through hole in the bottom of the water pipe, the both ends of the water pipe symmetrically offer One sliding slot, second sliding slot.
The surface of the baffle is provided with multiple second through-holes, and the linear array distribution of the second through-hole is in the baffle Surface.
Further, the first sliding groove and the second sliding slot is of same size, the first sliding groove and described the The length of two sliding slots is greater than the diameter of the first through hole, and the width of the first sliding groove and the first sliding groove is greater than the gear The thickness of plate.
The water feeding machine structure includes water storage box, micro pump and flow pipe, and the flow pipe is connected with the water pipe Logical, the flow pipe passes through the water storage box and is connected with the micro pump, and the micro pump is set to the water storage box At inner bottom.
Specifically, the rotating mechanism includes the first rotary electric machine, reel and connecting line, first rotary electric machine is solid Deviate from the other end of the flow pipe due to the water pipe, the surface of first rotary electric machine is fixed with the reel, institute The surface wrap for stating reel has the connecting line, and the connecting line passes through the fixed company in one end of the water pipe and the baffle It connects.
The elevating mechanism includes fixed plate, opening, the second rotary electric machine, ball-screw and fixing seat, the fixation Plate is set to the other side of the relatively described water feeding machine structure of the blackboard body, and the length of the fixed plate is equal to the blackboard body Highly, the fixed plate offers the opening close to the side of the blackboard body, sets at the inner bottom of the fixed plate It is equipped with second rotary electric machine, the top surface of second rotary electric machine is fixed with the ball-screw, the ball-screw Top is fixedly connected with the inner top surface of the fixed plate, and the surface of the fixed plate is threaded with the fixing seat, described solid Reservation is fixedly connected with the third rotary electric machine.
Wherein, the dedusting mechanism includes fixed column, the first cotton, the second cotton and electrical bar, the fixed column with The third rotary electric machine is fixedly connected, and the two sides of the fixed column are symmetrically fixed with first cotton, second cotton, The inside of second cotton is equipped with the electrical bar, and the length of the fixed column is equal to the length of the blackboard body.
The beneficial effects of the present invention are: by setting elevating mechanism drive fixed column along the surface of blackboard body above and below Movement, so that the first cotton in fixed column clears up blackboard body automatically, it is convenient and efficient;It is past by setting water feeding machine structure Water is sent in water pipe, and then water is leaked to from first through hole to the surface of blackboard body, blackboard body is cleaned, so that the When being wiped, more cleaning, chalk powder will not be flown upward one cotton everywhere;By the third rotary electric machine of setting by fixed column Then rotation is heated so that the fever of the second cotton by electrical bar so that the surface of the second cotton and blackboard body fits closely, Again by the second cotton blackboard body surface move up and down, quickly moisture is evaporated, realize to blackboard body it is quick clean, It quickly is evaporated function, is conducive to improve working efficiency when class-teaching of teacher.
Detailed description of the invention
Fig. 1 is the structural representation provided by the present invention for a kind of preferred embodiment of the automatic flushing device of classroom blackboard Figure;
Fig. 2 is enlarged diagram at A shown in FIG. 1;
Fig. 3 is enlarged diagram at B shown in FIG. 1;
Fig. 4 is the structural schematic diagram of dedusting mechanism shown in FIG. 1;
Fig. 5 is the schematic diagram of internal structure of dedusting mechanism shown in Fig. 4.
Wherein, 1, blackboard body, 2, water pipe, 21, catch basin, 22, first through hole, 23, first sliding groove, 24, second is sliding Slot, 3, baffle, the 31, second through-hole, 4, water feeding machine structure, 41, water storage box, 42, micro pump, 43, flow pipe, 5, rotating mechanism, 51, the first rotary electric machine, 52, reel, 53, connecting line, 6, spring, 7, elevating mechanism, 71, fixed plate, 72, opening, 73, second Rotary electric machine, 74, ball-screw, 75, fixing seat, 8, third rotary electric machine, 9, dedusting mechanism, 91, fixed column, the 92, first cotton Cloth, the 93, second cotton, 94, electrical bar.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below Diagram and specific embodiment are closed, the present invention is further explained.
Referring to Fig.1, shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, a kind of automatic flushing device for classroom blackboard, including blackboard Ontology 1, water pipe 2, baffle 3, water feeding machine structure 4, rotating mechanism 5, spring 6, elevating mechanism 7, third rotary electric machine 8 and dedusting Mechanism 9, the top of the blackboard body 1 are fixed with the water pipe 2;
The baffle 3 is set to the inside of the water pipe 2, and the baffle 3 is to obstruct the water pipe 2;
The water feeding machine structure 4 is set to the side of the blackboard body 1, one end of the water feeding machine structure 4 and the water pipe 2 It is connected;
The rotating mechanism 5 is set to the other end that the water pipe 2 deviates from the water feeding machine structure 4, and the rotating mechanism 5 is worn It crosses the water pipe 2 to be fixedly connected with one end of the baffle 3, the rotating mechanism 5 is to drive the baffle 3 to move;
The spring 6 is set to the inside of the water pipe 2, and the spring 6 and the baffle 3 deviate from the rotating mechanism 5 other end is fixedly connected;
The elevating mechanism 7 is set to the other side of the relatively described water feeding machine structure 4 of the blackboard body 1, the elevating mechanism 7 To drive the dedusting mechanism 9 to move up and down;
One end of the third rotary electric machine 8 is fixedly connected with the elevating mechanism 7;
The other end of the dedusting mechanism 9 with the third rotary electric machine 8 away from the elevating mechanism 7 is fixedly connected, institute It states dedusting mechanism 9 and the surface of the blackboard body 1 fits closely;
Further, the inside of the water pipe 2 is equipped with catch basin 21, and the bottom of the water pipe 2 offers multiple the One through-hole 22, the linear array distribution of the first through hole 22 is in the bottom of the water pipe 2, the both ends pair of the water pipe 2 Title offers first sliding groove 23, second sliding slot 24;
The surface of the baffle 3 is provided with multiple second through-holes 31, and the linear array distribution of second through-hole 31 is in described The surface of baffle 3;The baffle 3 is under the action of rotating mechanism 5 along the first sliding groove 23, the second sliding slot 24 Sliding until the first through hole 22 and the position of second through-hole 31 are completely coincident, and pulls institute when the movement of the baffle 3 Spring 6 is stated, the unlatching to the water pipe 2 is completed;
Further, the first sliding groove 23 and the second sliding slot 24 is of same size, the first sliding groove 23 with The length of the second sliding slot 24 is greater than the diameter of the first through hole 22, the first sliding groove 23 and the first sliding groove 23 Width is greater than the thickness of the baffle 3;
The water feeding machine structure 4 includes water storage box 41, micro pump 42 and flow pipe 43, the flow pipe 43 and the storage Water pipe 2 is connected, and the flow pipe 43 passes through the water storage box 41 and is connected with the micro pump 42, the micro pump 42 At the inner bottom of the water storage box 41;By starting the micro pump 42, so that the flow pipe 43 is toward the storage Water is injected in water pipe 2;
Specifically, the rotating mechanism 5 include the first rotary electric machine 51, reel 52 and connecting line 53, described first turn Dynamic motor 51 is fixed on the other end that the water pipe 2 deviates from the flow pipe 43, and the surface of first rotary electric machine 51 is solid Surely there is the reel 52, the surface wrap of the reel 52 has the connecting line 53, and the connecting line 53 passes through the water pipe 2 It is fixedly connected with one end of the baffle 3;Starting first rotary electric machine 51 drives the reel 52 to rotate, so that the company Wiring 53 pulls the baffle 3 to slide along the first sliding groove 23, the second sliding slot 24, until the first through hole 22 with The position of second through-hole 31 is completely coincident, and the baffle 3 is driven to move;
The elevating mechanism 7 includes fixed plate 71, the 72, second rotary electric machine 73 of opening, ball-screw 74 and fixing seat 75, the fixed plate 71 is set to the other side of the relatively described water feeding machine structure 4 of the blackboard body 1, the length of the fixed plate 71 Equal to the height of the blackboard body 1, the fixed plate 71 offers the opening 72 close to the side of the blackboard body 1, Second rotary electric machine 73 is provided at the inner bottom of the fixed plate 71, the top surface of second rotary electric machine 73 is fixed There is the ball-screw 74, the top of the ball-screw 74 is fixedly connected with the inner top surface of the fixed plate 71, the fixation The surface of plate 71 is threaded with the fixing seat 75, and the fixing seat 75 is fixedly connected with the third rotary electric machine 8;Starting Second rotary electric machine 73 drives the ball-screw 74 to rotate so that the fixing seat 75 drive the fixed column 91 along The opening 72 moves upwards, when the fixing seat 75 moves to the top of the fixed plate 71, second rotary electric machine 73 invert so that the fixed column 91 moves downward, and the fixed column 91 is driven to move so on circulate;
Wherein, the dedusting mechanism 9 includes fixed column 91, the first cotton 92, the second cotton 93 and electrical bar 94, described Fixed column 91 is fixedly connected with the third rotary electric machine 8, and the two sides of the fixed column 91 are symmetrically fixed with first cotton 92, the inside of second cotton 93, second cotton 93 is equipped with the electrical bar 94, and the length of the fixed column 91 is equal to The length of the blackboard body 1;Start the electrical bar 94 to heat second cotton 93, while second cotton 93 move up and down under the drive of the elevating mechanism 7 along the surface of the blackboard body 1, by 1 surface of blackboard body Moisture quickly wipe and be evaporated.
In the use of the present invention, firstly, starting micro pump 42, injects water into water pipe 2 by flow pipe 43, then Start the first rotary electric machine 51 to rotate with movable reel 52, so that connecting line 53 pulls baffle 3 along first sliding groove 23, second sliding slot 24 slidings until first through hole 22 and the position of the second through-hole 31 are completely coincident, and pull spring 6, completion pair when the movement of baffle 3 The unlatching of water pipe 2;The water in water pipe 2 flows out to the surface of blackboard body 1 along first through hole 22 later, starts second turn Dynamic motor 73 drives ball-screw 74 to rotate, so that fixing seat 75 drives fixed column 91 to move upwards along opening 72, works as fixation Seat 75 is when moving to the top of fixed plate 71, and the second rotary electric machine 73 inverts so that fixed column 91 moves downward, and and so on follows Ring cleans blackboard body 1 by the first cotton 92, after the writing on blackboard is wiped completely, starts third rotary electric machine 8 drive fixed column 91 to rotate, so that the second cotton 93 and the surface of blackboard body 1 fit closely, it is right then to start electrical bar 94 Second cotton 93 is heated, while the second cotton 93 is transported above and below the surface under the drive of elevating mechanism 7 along blackboard body 1 It is dynamic, the moisture on 1 surface of blackboard body is quickly wiped and is evaporated, the scouring work to blackboard body 1 is completed.
The present invention drives fixed column 91 to move up and down along the surface of blackboard body 1 by setting elevating mechanism 7, so that solid The first cotton 92 on fixed column 91 clears up blackboard body 1 automatically, convenient and efficient;By the way that water feeding machine structure 4 is arranged toward water storage Water is sent in pipe 2, then water is leaked to the surface of blackboard body 1 from first through hole 22, and blackboard body 1 is cleaned, so that When being wiped, more cleaning, chalk powder will not be flown upward first cotton 92 everywhere;It will be consolidated by the third rotary electric machine 8 of setting Fixed column 91 rotates, so that the second cotton 93 and the surface of blackboard body 1 fit closely, then passes through electrical bar 94 and heats so that the The fever of two cottons 93, then moved up and down by the second cotton 93 on 1 surface of blackboard body, quickly moisture is evaporated, is realized to black The quick scouring of plate ontology 1 is quickly evaporated function, is conducive to improve working efficiency when class-teaching of teacher.
The electric elements occurred in the application external connection power supply when in use.
It is related to circuit and electric elements and module is the prior art, those skilled in the art may be implemented completely, nothing Superfluous words is needed, the content that the present invention protects is not related to the improvement for software and method yet.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this The principle of invention, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these changes Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its Equivalent defines.

Claims (8)

1. a kind of automatic flushing device for classroom blackboard, it is characterised in that: including blackboard body (1), water pipe (2), gear Plate (3), water feeding machine structure (4), rotating mechanism (5), spring (6), elevating mechanism (7), third rotary electric machine (8) and dedusting mechanism (9), the water pipe (2) are fixed at the top of the blackboard body (1);
The baffle (3) is set to the inside of the water pipe (2), and the baffle (3) is to hinder the water pipe (2) Every;
The water feeding machine structure (4) is set to the side of the blackboard body (1), the water feeding machine structure (4) and the water pipe (2) One end is connected;
The rotating mechanism (5) is set to the other end that the water pipe (2) deviate from the water feeding machine structure (4), the rotating mechanism (5) it passes through the water pipe (2) to be fixedly connected with one end of the baffle (3), the rotating mechanism (5) is to drive the gear Plate (3) movement;
The spring (6) is set to the inside of the water pipe (2), and the spring (6) and the baffle (3) deviate from the rotation The other end of mechanism (5) is fixedly connected;
The elevating mechanism (7) is set to the other side of the blackboard body (1) relatively described water feeding machine structure (4), the elevator Structure (7) is to drive the dedusting mechanism (9) to move up and down;
One end of the third rotary electric machine (8) is fixedly connected with the elevating mechanism (7);
The other end of the dedusting mechanism (9) with the third rotary electric machine (8) away from the elevating mechanism (7) is fixedly connected, The dedusting mechanism (9) and the surface of the blackboard body (1) fit closely.
2. a kind of automatic flushing device for classroom blackboard as described in claim 1, which is characterized in that the water pipe (2) inside is equipped with catch basin (21), and the bottom of the water pipe (2) offers multiple first through hole (22), and described first is logical For the linear array distribution in hole (22) in the bottom of the water pipe (2), it is sliding that the both ends of the water pipe (2) symmetrically offer first Slot (23), second sliding slot (24).
3. a kind of automatic flushing device for classroom blackboard as described in claim 1, which is characterized in that the baffle (3) Surface be provided with multiple second through-holes (31), the linear array distribution of second through-hole (31) is in the surface of the baffle (3).
4. a kind of automatic flushing device for classroom blackboard as claimed in claim 2, which is characterized in that the first sliding groove (23) of same size with the second sliding slot (24), the first sliding groove (23) and the length of the second sliding slot (24) are greater than The diameter of the first through hole (22), the first sliding groove (23) and the width of the first sliding groove (23) are greater than the baffle (3) thickness.
5. a kind of automatic flushing device for classroom blackboard as described in claim 1, which is characterized in that the water feeding machine structure It (4) include water storage box (41), micro pump (42) and flow pipe (43), the flow pipe (43) and the water pipe (2) phase Connection, the flow pipe (43) pass through the water storage box (41) and are connected with the micro pump (42), the micro pump (42) at the inner bottom of the water storage box (41).
6. a kind of automatic flushing device for classroom blackboard as claimed in claim 5, which is characterized in that the rotating mechanism It (5) include the first rotary electric machine (51), reel (52) and connecting line (53), first rotary electric machine (51) is fixed on described Water pipe (2) deviates from the other end of the flow pipe (43), and the surface of first rotary electric machine (51) is fixed with the reel (52), the surface wrap of the reel (52) has the connecting line (53), the connecting line (53) pass through the water pipe (2) with One end of the baffle (3) is fixedly connected.
7. a kind of automatic flushing device for classroom blackboard as described in claim 1, which is characterized in that the elevating mechanism It (7) include fixed plate (71), opening (72), the second rotary electric machine (73), ball-screw (74) and fixing seat (75), it is described solid Fixed board (71) is set to the other side of the blackboard body (1) relatively described water feeding machine structure (4), the length etc. of the fixed plate (71) Height in the blackboard body (1), the fixed plate (71) offer the opening close to the side of the blackboard body (1) (72), second rotary electric machine (73), second rotary electric machine are provided at the inner bottom of the fixed plate (71) (73) top surface is fixed with the ball-screw (74), the top of the ball-screw (74) and the interior top of the fixed plate (71) Face is fixedly connected, and the surface of the fixed plate (71) is threaded with the fixing seat (75), the fixing seat (75) with it is described Third rotary electric machine (8) is fixedly connected.
8. a kind of automatic flushing device for classroom blackboard as described in claim 1, which is characterized in that the dedusting mechanism It (9) include fixed column (91), the first cotton (92), the second cotton (93) and electrical bar (94), the fixed column (91) and institute It states third rotary electric machine (8) to be fixedly connected, the two sides of the fixed column (91) are symmetrically fixed with first cotton (92), described The inside of second cotton (93), second cotton (93) is equipped with the electrical bar (94), the length etc. of the fixed column (91) Length in the blackboard body (1).
CN201811040632.5A 2018-09-07 2018-09-07 A kind of automatic flushing device for classroom blackboard Pending CN109263378A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811040632.5A CN109263378A (en) 2018-09-07 2018-09-07 A kind of automatic flushing device for classroom blackboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811040632.5A CN109263378A (en) 2018-09-07 2018-09-07 A kind of automatic flushing device for classroom blackboard

Publications (1)

Publication Number Publication Date
CN109263378A true CN109263378A (en) 2019-01-25

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Application Number Title Priority Date Filing Date
CN201811040632.5A Pending CN109263378A (en) 2018-09-07 2018-09-07 A kind of automatic flushing device for classroom blackboard

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CN (1) CN109263378A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112497969A (en) * 2020-12-17 2021-03-16 安徽文香信息技术有限公司 Wisdom blackboard subassembly based on automatically cleaning mechanism
CN113895171A (en) * 2021-10-21 2022-01-07 桃源县漆河镇中学 Absorption formula raise dust suppression type blackboard eraser

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Publication number Priority date Publication date Assignee Title
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CN106042736A (en) * 2016-07-11 2016-10-26 章武安 Water flow cleaning type blackboard
CN206287719U (en) * 2016-11-06 2017-06-30 冀卫华 A kind of blackboard for Chinese teaching
CN207045008U (en) * 2017-03-15 2018-02-27 朱石明 It is a kind of can with Rapid Cleaning and with drying function blackboard cleaning device
CN207582748U (en) * 2017-11-28 2018-07-06 广州市第三建筑装修有限公司 A kind of curtain wall construction
CN108450106A (en) * 2018-03-12 2018-08-28 吴剑辉 A kind of agricultural lands uniform of application equipment

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Publication number Priority date Publication date Assignee Title
CN203611613U (en) * 2013-11-13 2014-05-28 孙永祥 Blackboard
CN203611609U (en) * 2013-12-20 2014-05-28 侯桂云 Remote control type automatic-clearing blackboard
CN203957630U (en) * 2014-07-14 2014-11-26 潍坊工商职业学院 A kind of blackboard
CN204659303U (en) * 2015-06-08 2015-09-23 田高亮 A kind of multifunctional cleaning blackboard
CN105730100A (en) * 2016-04-15 2016-07-06 王维烨 Clean, dustless and automatic blackboard wiping device
CN106042736A (en) * 2016-07-11 2016-10-26 章武安 Water flow cleaning type blackboard
CN206287719U (en) * 2016-11-06 2017-06-30 冀卫华 A kind of blackboard for Chinese teaching
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CN207582748U (en) * 2017-11-28 2018-07-06 广州市第三建筑装修有限公司 A kind of curtain wall construction
CN108450106A (en) * 2018-03-12 2018-08-28 吴剑辉 A kind of agricultural lands uniform of application equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112497969A (en) * 2020-12-17 2021-03-16 安徽文香信息技术有限公司 Wisdom blackboard subassembly based on automatically cleaning mechanism
CN113895171A (en) * 2021-10-21 2022-01-07 桃源县漆河镇中学 Absorption formula raise dust suppression type blackboard eraser

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Application publication date: 20190125

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