CN210759973U

CN210759973U - Blackboard eraser capable of absorbing chalk dust

Info

Publication number: CN210759973U
Application number: CN201921512731.9U
Authority: CN
Inventors: 汪文政; 汪莹; 陈茁; 陈志椿; 潘丽敏
Original assignee: Yango University
Current assignee: Yango University
Priority date: 2019-09-11
Filing date: 2019-09-11
Publication date: 2020-06-16
Anticipated expiration: 2029-09-11

Abstract

The utility model discloses a can inhale blackboard eraser of chalk dust, including circular mounting groove, the top of the first annular installing frame of circular mounting groove bottom is through a plurality of first springs and the circular grid plate fixed connection of type of protruding character, the circular grid plate top of type of protruding character is equipped with two shock dynamo, the motor fixing base at shock dynamo top is connected fixedly through the second spring and cup joints the annular fixed plate at the shock dynamo lateral surface, the top of the circular grid plate of type of protruding character is equipped with the toper dust cage rather than pressing close to mutually, the air inlet of the draught fan of toper dust cage and circular mounting groove internal fixation setting is put through mutually, the gas outlet of draught fan is put through mutually with dust collection device through collection dirt pipeline. The utility model discloses be favorable to improving the in-class condition that chalk dust flies in disorder everywhere, avoid the dust to influence teachers and students' health, reduce the difficult problem that chalk dust flies and is difficult to wipe off all the way around.

Description

Blackboard eraser capable of absorbing chalk dust

Technical Field

The utility model belongs to the technical field of the blackboard eraser, concretely relates to can inhale blackboard eraser of chalk dust.

Background

Teachers often need to use chalk to write and draw on a blackboard for explanation, chalk handwriting needs to be erased and written for several times in a class, when the teachers leave class, a layer of white chalk dust is always left on hands, sleeves and even hair and shoulders, the chalk dust is easily sucked into lungs, most of the chalk dust is blocked in alveoli, lung loss can be caused by the actions of chemistry and immunity through a series of stimulation, the respiratory system inflammation and the lung ventilation function are reduced, when the teachers face a whole blackboard writing, the teachers always spend valuable classroom time to clean the blackboard, the blackboard is often not cleaned up at one time, and the blackboard always has the condition of residual chalk dust,

the blackboard eraser in the prior art cannot completely adsorb the chalk of the erased chalk handwriting, the main components of the chalk are calcium carbonate and calcium sulfate, small particles are easily formed and are scattered, and the chalk cannot be adsorbed and has large pollution.

Therefore, the blackboard eraser capable of absorbing chalk dust is provided for improving the existing blackboard eraser and repairing the defects of the blackboard eraser, so that the problem that chalk dust flies in the sky and is difficult to erase is solved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a blackboard eraser of adsorbable chalk dust to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a blackboard eraser capable of absorbing chalk dust comprises a circular mounting groove, a plurality of first springs and convex-shaped circular grid plates are arranged above a first annular mounting frame fixed on the inner side of the bottom end of the circular mounting groove in an annular equidistant mode and fixedly connected with the output ends of two vibration motors respectively, the top of each vibration motor is fixedly connected with a motor fixing seat, the equal bottom of each motor fixing seat is fixedly connected and fixed with an annular fixing plate which is sleeved on the outer side surface of the vibration motor and fixedly connected with the inner wall of the circular mounting groove through two second springs which are symmetrically arranged, a conical dust collection cover which is close to the top of the convex-shaped circular grid plate is arranged on the top of the convex-shaped circular grid plate, the conical dust collection cover is communicated with the air inlet of a draught fan fixedly arranged in the circular mounting groove, the air outlet of the draught fan is communicated with a dust collection device through a dust collection pipeline, the dust collecting device comprises a sleeve fixedly arranged on the circular mounting groove, a dust collecting net cover in threaded connection with an external thread sleeve at the left end inside the sleeve, a filter bag fixedly arranged in the dust collecting net cover and an external thread sealing cover which is in threaded connection with the internal thread part at the right end of the sleeve and penetrates through the circular mounting groove, and an air outlet nozzle communicated with the sleeve is arranged on the circular mounting groove.

Preferably, the circular grid plate of type shape of the convex is located in the circular mounting groove and interpenetrates with the first annular mounting frame.

Preferably, hollow rhombic grids of an integral structure are densely distributed on the convex circular grid plate, and a blackboard brush is fixedly bonded at the bottom of each hollow rhombic grid.

Preferably, the blackboard brush is of an annular structure, and the middle part of the blackboard brush is provided with a dust inlet communicated with the hollow rhombic grids.

Preferably, the air inlet of the dust collecting pipeline is provided with a one-way valve.

This one-way valve that sets up can effectively prevent dust air current refluence backward flow, and then and influence dust removal effect.

Preferably, the air outlet of the dust collecting pipeline is communicated with the air inlet of the filter bag.

Preferably, a vent is arranged on the circular mounting groove.

The arrangement ensures that the blackboard eraser has good ventilation effect.

Preferably, two positioning magnets are embedded at the left end and the right end of the top of the circular mounting groove.

The blackboard eraser is fixed on the blackboard by the aid of the two positioning magnets, and difficulty in finding the blackboard eraser due to disorder placement of the blackboard eraser is avoided.

Preferably, an elastic binding band is fixedly arranged at the top of the circular mounting groove.

The arrangement ensures that the palm of the blackboard eraser passes through the elastic bandage when the blackboard eraser is used, is beneficial to the palm to hold the blackboard eraser and prevents the problem that the blackboard eraser is frequently damaged due to unstable holding force and falls off.

The utility model discloses a technological effect and advantage: this blackboard eraser of adsorbable chalk dust, utilize the blackboard brush to erase the chalk dust on the board, the in-process dust of erasing is through advancing the ash mouth, cavity rhombus net and toper dust cage, get into in the sleeve through dust collecting pipeline under the effect of draught fan, through filter bag and dust collecting net cover filtration back through the clean gas of air outlet nozzle discharge, this blackboard eraser is favorable to improving the condition that chalk dust flies in disorder everywhere in the classroom, being provided with of draught fan does benefit to and inhales the inside collection chamber of blackboard eraser with the dust in the toper dust cage, vibrations through shock dynamo sends, the dust that will remain in blackboard brush and blackboard department shakes off so that in the collection chamber of inhaling toper dust cage, be favorable to improving teaching quality and teaching efficiency, avoid the dust to influence teachers and students healthy, reduce the difficult problem that chalk dust flies and is difficult to erase.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of the dust collecting device of the present invention.

In the figure: 1. a circular mounting groove; 2. a first annular mounting frame; 3. a first spring; 4. a convex circular grid plate; 5. a blackboard brush; 6. vibrating a motor; 7. a motor fixing seat; 8. a second spring; 9. an annular fixed plate; 10. hollow rhombic grids; 11. an ash inlet; 12. an induced draft fan; 13. a dust collecting duct; 14. a dust collection device; 15. a one-way valve; 16. a sleeve; 17. an externally threaded sleeve; 18. a dust collecting net cover; 19. a filter bag; 20. an internal thread portion; 21. sealing the external thread; 22. an air outlet nozzle; 23. a vent; 24. positioning a magnet; 25. an elastic band; 26. a conical dust collection cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a blackboard eraser capable of absorbing chalk dust as shown in figure 1-2, which comprises a circular mounting groove 1, a plurality of first springs 3 are arranged above a first annular mounting frame 2 fixed at the inner side of the bottom end of the circular mounting groove 1 at equal intervals in an annular shape and are fixedly connected with a convex-shaped circular grid plate 4, the left side and the right side of the top of the convex-shaped circular grid plate 4 are respectively and fixedly connected with the output ends of two vibration motors 6, the top of each vibration motor 6 is fixedly connected with a motor fixing seat 7, the bottom of each motor fixing seat 7 is fixedly connected and fixed with an annular fixing plate 9 which is sleeved on the outer side surface of the vibration motor 6 and is fixedly connected with the inner wall of the circular mounting groove 1 through two second springs 8 which are symmetrically and fixedly arranged in a left-right way, the top of the convex-shaped circular grid plate 4 is provided with a conical dust cage 26 which is close to the top, the conical dust cage 26 is communicated with, the gas outlet of draught fan 12 is put through mutually with dust collection device 14 through collecting duct 13, dust collection device 14 is including fixed sleeve 16 of locating on circular mounting groove 1, with the collection dirt screen panel 18 of the external screw thread sleeve 17 spiro union of the inside left end of sleeve 16, fixed locate the interior filter bag 19 of collection dirt screen panel 18 and run through in circular mounting groove 1 and the external screw thread closing cap 21 of the 20 spiro union of sleeve 16 right-hand member internal thread portion, be equipped with the air outlet nozzle 22 of putting through mutually with sleeve 16 on the circular mounting groove 1.

Specifically, the circular grid plate 4 of type shape of the convex is located in circular mounting groove 1 and alternates with first annular mounting frame 2.

Specifically, hollow rhombic grids 10 of an integral structure are densely distributed on the convex circular grid plate 4, and a blackboard brush 5 is fixedly bonded at the bottom of each hollow rhombic grid 10.

Specifically, the blackboard brush 5 is of an annular structure, and the middle part of the blackboard brush 5 is provided with a dust inlet 11 communicated with the hollow rhombic grid 10.

Specifically, the air inlet of the dust collecting pipeline 13 is provided with a one-way valve 15.

Specifically, the air outlet of the dust collecting pipeline 13 is communicated with the air inlet of the filter bag 19.

Specifically, a vent 23 is arranged on the circular mounting groove 1.

Specifically, two positioning magnets 24 are embedded at the left end and the right end of the top of the circular mounting groove 1.

Specifically, an elastic bandage 25 is fixedly arranged at the top of the circular mounting groove 1.

Specifically, still be equipped with the battery to draught fan 12 and the power supply of shock dynamo in the circular mounting groove 1.

The blackboard eraser capable of sucking chalk dust comprises a palm, an elastic bandage 25 penetrates through the palm to hold a circular mounting groove 1, chalk dust on a blackboard is erased by a blackboard brush 5, dust in the erasing process passes through a dust inlet 11, a hollow rhombic grid 10 and a conical dust hood 26, the dust enters a sleeve 16 through a dust collecting pipeline 13 under the action of an induced draft fan 12, clean gas is discharged through an air outlet 22 after being filtered by a filter bag 19 and a dust collecting net cover 18, the dust collecting net cover 18 is screwed in the sleeve 16 after an external thread sealing cover 21 is disassembled, the dust collecting net cover 18 is screwed down, dust in the filter bag 19 is cleaned, the cleaning is convenient, the blackboard eraser is favorable for improving the condition that chalk dust flies around in a classroom, the induced draft fan 12 is favorable for sucking the dust into a collecting cavity in the blackboard eraser, namely the conical dust hood 26, and the dust left in the blackboard eraser 5 and a blackboard department is shaken off by vibration sent by a vibrating motor 6 so as to be sucked into the collecting cavity of the conical dust hood 26 The teaching device is beneficial to improving the teaching quality and the teaching efficiency and avoiding the dust from influencing the health of teachers and students.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a blackboard eraser of adsorbable chalk dust, includes circular mounting groove (1), its characterized in that: the top of the first annular mounting frame (2) fixed at the inner side of the bottom end of the circular mounting groove (1) is provided with a plurality of first springs (3) and convex-shaped circular grid plates (4) which are arranged at equal intervals in an annular manner, the left side and the right side of the top of each convex-shaped circular grid plate (4) are respectively fixedly connected with the output ends of two vibration motors (6), the top of each vibration motor (6) is fixedly connected with a motor fixing seat (7) through two second springs (8) which are symmetrically and fixedly arranged at the left side and the right side, the bottom of each motor fixing seat (7) is fixedly connected with an annular fixing plate (9) which is sleeved on the outer side surface of each vibration motor (6) and is fixedly connected with the inner wall of the circular mounting groove (1), the top of each convex-shaped circular grid plate (4) is provided with a conical dust collection cover (26) which is pressed close to the conical dust collection cover (26), and the conical dust collection cover (26, the gas outlet of draught fan (12) is put through mutually with dust collection device (14) through collecting duct (13), dust collection device (14) including fixed sleeve (16) of locating on circular mounting groove (1), with collection dirt screen panel (18) of external screw thread sleeve (17) spiro union of the inside left end of sleeve (16), fixed filter bag (19) of locating in collection dirt screen panel (18) and run through in circular mounting groove (1) and external screw thread closing cap (21) that sleeve (16) right-hand member internal thread portion (20) spiro union is connected, be equipped with on circular mounting groove (1) and put through mutually with sleeve (16) give vent to anger mouth (22).

2. The blackboard eraser capable of absorbing chalk dust as claimed in claim 1, wherein: the convex circular grid plate (4) is positioned in the circular mounting groove (1) and is inserted into the first annular mounting frame (2).

3. The blackboard eraser capable of absorbing chalk dust as claimed in claim 1, wherein: hollow rhombic grids (10) of an integrated structure are densely distributed on the convex circular grid plate (4), and a blackboard brush (5) is fixedly bonded at the bottom of each hollow rhombic grid (10).

4. The blackboard eraser capable of absorbing chalk dust as claimed in claim 3, wherein: the blackboard brush (5) is of an annular structure, and the middle part of the blackboard brush (5) is provided with a dust inlet (11) communicated with the hollow rhombic grid (10).

5. The blackboard eraser capable of absorbing chalk dust as claimed in claim 1, wherein: and a one-way valve (15) is arranged at the air inlet of the dust collecting pipeline (13).

6. The blackboard eraser capable of absorbing chalk dust as claimed in claim 1, wherein: the air outlet of the dust collecting pipeline (13) is communicated with the air inlet of the filter bag (19).

7. The blackboard eraser capable of absorbing chalk dust as claimed in claim 1, wherein: and a ventilation opening (23) is formed in the circular mounting groove (1).

8. The blackboard eraser capable of absorbing chalk dust as claimed in claim 1, wherein: two positioning magnets (24) are embedded at the left end and the right end of the top of the circular mounting groove (1).

9. The blackboard eraser capable of absorbing chalk dust as claimed in claim 1, wherein: and an elastic bandage (25) is fixedly arranged at the top of the circular mounting groove (1).