CN210390593U

CN210390593U - Blackboard eraser for teaching of chalk dust is collected in initiative

Info

Publication number: CN210390593U
Application number: CN201920898921.2U
Authority: CN
Inventors: 逄博
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2020-04-24
Anticipated expiration: 2029-06-14

Abstract

The utility model discloses a blackboard eraser is used in teaching of chalk dust is collected in initiative, include lid, bottom plate, collecting box and clean the piece, the edge of bottom plate evenly is provided with the through-hole, the inside of bottom plate is provided with the cell body, and the both ends of cell body all are provided with the bayonet socket, the one end of bayonet socket all is provided with smooth chamber, the bottom of cell body is installed and is cleaned the piece, and cleans the both ends of piece and all install the lug of mutually supporting with the bayonet socket, the collecting box is installed on the top of bottom plate, and the inside intermediate position department of collecting box installs the filter screen through the connecting seat, the connecting seat all is provided with fixing bolt with the junction of filter screen and collecting. The utility model discloses an install dust catcher, through-hole, collecting box and filter screen, the blackboard eraser of being convenient for is in the inside of cleaning the in-process through negative-pressure air fan with the dust by the through-hole suction collecting box to the realization is collected the dust, avoids the dust to fly upward, causes environmental pollution, also endangers health simultaneously.

Description

Blackboard eraser for teaching of chalk dust is collected in initiative

Technical Field

The utility model relates to a teaching technical field specifically is a blackboard eraser is used in teaching of chalk dust is collected in initiative.

Background

In the teaching in the prior art, a large amount of chalk dust brought by erasing a blackboard after writing with chalk in class becomes the first health hidden trouble of most teachers, the harm brought by the chalk dust is extremely common, most teachers still use traditional chalk, and various explicit and implicit syndromes brought by the chalk bring hidden trouble to the health of the teachers although dustless chalk and dustproof blackboard erasers are popularized and many new inventions are in progress.

When traditional blackboard eraser is used for cleaning the chalk word on the blackboard, the chalk dust all can fly upward all around, makes the people on one's body and all everywhere on the desk be, and is extremely unhygienic, influences the healthy of people, cleans the piece simultaneously and mostly is fixed mounting, can't dismantle, uses a period and can only abandon, causes the waste, also is not convenient for open the blackboard eraser in addition, looks over and overhauls the inside to greatly increased economic cost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a blackboard eraser is used in teaching of chalk dust is collected in initiative to propose unable collection dust, clean the problem that the piece can not be dismantled and be not convenient for overhaul in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a teaching blackboard eraser capable of actively collecting chalk dust comprises a cover body, a bottom plate, a collecting box and wiping blocks, wherein through holes are uniformly formed in the edge of the bottom plate, a groove body is arranged in the bottom plate, bayonets are arranged at two ends of the groove body, a sliding cavity is formed in one end of each bayonet, the wiping blocks are arranged at the bottom end of the groove body, lugs matched with the bayonets are arranged at two ends of each wiping block, the collecting box is arranged at the top end of the bottom plate, a filter screen is arranged at the middle position in the collecting box through a connecting seat, fixing bolts are arranged at the connecting positions of the connecting seat and the filter screen and the collecting box respectively, reserved blocks are arranged at four corners at the top end of the collecting box, the cover body is arranged at the top end of the collecting box, reserved grooves matched with the reserved blocks are arranged at four corners at the bottom end in the, the both ends of lid bottom all are provided with the amortization cotton, the intermediate position department of lid bottom installs the casing, and the inside top of casing installs negative-pressure air fan.

Preferably, the handle is installed at the middle position of the top end of the cover body, the handle and the cover body form an integral welding structure, and grooves are uniformly formed in the middle position of the handle.

Preferably, the central line of the negative pressure fan and the central line of the filter screen are overlapped.

Preferably, the number of the silencing cotton is two, the silencing cotton is symmetrically distributed about the vertical center line of the collecting box, and the collecting box is of a hollow structure.

Preferably, the reserved block on the top end of the collecting box and the reserved groove in the cover body form a dismounting and mounting structure, internal threads are uniformly arranged on the inner side wall of the reserved groove, and external threads matched with the internal threads are uniformly arranged on the outer side wall of the reserved block.

Preferably, the lugs at the two ends of the wiping block form a sliding structure with the sliding cavity through the bayonets.

Compared with the prior art, the beneficial effects of the utility model are that: the blackboard eraser for teaching for actively collecting chalk dust is convenient for the blackboard eraser to suck dust into the inside of the collecting box through the through hole by a negative pressure fan in the cleaning process through the installation of the dust collector, the through hole, the collecting box and the filter screen, thereby realizing the collection of the dust, avoiding the dust flying and causing environmental pollution, and simultaneously also harming the human health, through the installation of the reserved groove and the reserved block, the cover body is convenient to disassemble, thereby being convenient for cleaning the inside of the collecting box, avoiding the influence on the collection work of the dust due to the full collection, and being convenient for the maintenance when the inside breaks down, through the installation of the cleaning block, the sliding cavity and the convex block, the cleaning block is convenient to disassemble after the long-term cleaning, thereby being convenient for cleaning, ensuring the functionality of the cleaning block, through the installation of the filter screen, the connecting seat and the fixing bolt, thereby being convenient for the installation and, install the handle through the intermediate position department on lid top, and the intermediate position department of handle evenly is provided with the recess, increases frictional force, and convenient to use person holds the handle and cleans the blackboard, all installs the amortization cotton through the both ends in the lid bottom, is convenient for reduce the noise that the blackboard eraser produced in the use.

Drawings

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

fig. 2 is a schematic bottom view of the bottom plate of the present invention;

FIG. 3 is a schematic diagram of the structure of the reserved block of the present invention;

FIG. 4 is a schematic view of the connecting seat structure of the present invention;

fig. 5 is a schematic view of the wiping block structure of the present invention.

In the figure: 1. a handle; 2. a cover body; 3. a negative pressure fan; 4. reserving a block; 5. a filter screen; 6. a connecting seat; 7. a base plate; 8. a storage battery; 9. a housing; 10. silencing cotton; 11. a collection box; 12. fixing the bolt; 13. a wiping block; 14. a through hole; 15. a slide chamber; 16. a bayonet; 17. a trough body; 18. reserving a groove; 19. and (4) a bump.

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.

Referring to fig. 1-5, the present invention provides an embodiment: a teaching blackboard eraser capable of actively collecting chalk dust comprises a cover body 2, a bottom plate 7, a collecting box 11 and wiping blocks 13, through holes 14 are uniformly formed in the edge of the bottom plate 7, a groove body 17 is arranged inside the bottom plate 7, bayonets 16 are arranged at two ends of the groove body 17, a sliding cavity 15 is arranged at one end of each bayonet 16, the wiping blocks 13 are mounted at the bottom end of the groove body 17, lugs 19 matched with the bayonets 16 are mounted at two ends of each wiping block 13, the lugs 19 at two ends of each wiping block 13 and the sliding cavities 15 form a sliding structure through the bayonets 16, so that the wiping blocks 13 can be conveniently fixed inside the sliding cavities 15 to increase stability, the collecting box 11 is mounted at the top end of the bottom plate 7, a filter screen 5 is mounted at the middle position inside the collecting box 11 through a connecting seat 6, fixing bolts 12 are respectively arranged at the connecting positions of the connecting seat 6, the filter screen 5 and the collecting box, the top end of the collecting box 11 is provided with a cover body 2, four corners at the bottom end inside the cover body 2 are all provided with a reserved groove 18 which is matched with the reserved block 4, the middle position at the top end of the cover body 2 is provided with a handle 1, the handle 1 and the cover body 2 form an integrated welding structure, the middle position of the handle 1 is uniformly provided with a groove, friction force is increased, the handle 1 is convenient to hold by hands to clean the blackboard, the cleaning effect is improved, the reserved block 4 at the top end of the collecting box 11 and the reserved groove 18 inside the cover body 2 form a disassembly and assembly structure, the inner side wall of the reserved groove 18 is uniformly provided with inner threads, the outer side wall of the reserved block 4 is uniformly provided with outer threads which are matched with the inner threads, the cover body 2 is convenient to open so as to clean dust inside, the cleaning effect of the blackboard eraser is ensured, the both ends of 2 bottoms of lid all are provided with amortization cotton 10, the number of amortization cotton 10 is provided with two, and amortization cotton 10 is about the perpendicular central line symmetric distribution of collecting box 11, collecting box 11 is hollow structure, be convenient for reduce the noise pollution that the inside during operation of blackboard eraser produced, casing 9 is installed to the intermediate position department of 2 bottoms of lid, and casing 9 inside top installs negative-pressure air fan 3, negative-pressure air fan 3's central line and filter screen 5's central line coincide each other, filter screen 5 prevents effectively that the dust from getting into negative-pressure air fan 3's inside.

The working principle is as follows: when the blackboard eraser is used, the storage battery 8 provides a power source for the blackboard eraser, a user firstly holds the groove on the handle 1 by hand to increase friction force and facilitate holding, then the wiping block 13 is driven to begin to rub and wipe back and forth on the blackboard, generated dust is adsorbed to the inside of the collection box 11 by the negative pressure fan 3 through the through hole 14 at the edge of the bottom plate 7, thereby realizing collection of dust, avoiding flying of dust, causing environmental pollution and harming human health, in the using process of the blackboard eraser, the noise reduction cotton 10 adsorbs generated noise, improving the noise reduction function of the blackboard eraser, after wiping for a period of time, the cover body 2 is opened through the matching effect of the reserved groove 18 and the reserved block 4, thereby facilitating cleaning the inside of the collection box 11, and simultaneously detaching and cleaning the filter screen 5 through the connecting seat 6 and the fixing bolt 12, avoiding the phenomenon that the filter screen 5 is blocked, the dust collection work of the negative pressure fan 3 is influenced, and the wiping block 13 is taken down for cleaning by sliding the lug 19 from the inside of the sliding cavity 15 to the bayonet 16, so that the repeated long-time utilization of the blackboard eraser is ensured, and unnecessary economic expenditure is avoided.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides an initiative is collected blackboard eraser for teaching of chalk dust, includes lid (2), bottom plate (7), collecting box (11) and wipes piece (13), its characterized in that: the edge of the bottom plate (7) is uniformly provided with through holes (14), a groove body (17) is arranged inside the bottom plate (7), bayonets (16) are arranged at two ends of the groove body (17), a sliding cavity (15) is arranged at one end of each bayonet (16), wiping blocks (13) are installed at the bottom end of each groove body (17), lugs (19) matched with the bayonets (16) are installed at two ends of each wiping block (13), a collecting box (11) is installed at the top end of the bottom plate (7), a filter screen (5) is installed at the middle position inside the collecting box (11) through a connecting seat (6), fixing bolts (12) are arranged at the connecting positions of the connecting seat (6) and the filter screen (5) and the collecting box (11), reserved blocks (4) are installed at four corners at the top end of the collecting box (11), a cover body (2) is installed at the top end of the collecting, and four corners of the inside bottom of lid (2) all are provided with reserve groove (18) of mutually supporting with reserve piece (4), the inside intermediate position department of lid (2) evenly is provided with battery (8), the both ends of lid (2) bottom all are provided with amortization cotton (10), casing (9) are installed to the intermediate position department of lid (2) bottom, and negative-pressure air fan (3) are installed on the inside top of casing (9).

2. The blackboard eraser for teaching of actively collecting chalk dust according to claim 1, characterized in that: handle (1) are installed to the intermediate position department on lid (2) top, and handle (1) and lid (2) constitute integrative welded structure to the intermediate position department of handle (1) evenly is provided with the recess.

3. The blackboard eraser for teaching of actively collecting chalk dust according to claim 1, characterized in that: the central line of the negative pressure fan (3) is superposed with the central line of the filter screen (5).

4. The blackboard eraser for teaching of actively collecting chalk dust according to claim 1, characterized in that: the number of the silencing cotton (10) is two, the silencing cotton (10) is symmetrically distributed relative to the vertical center line of the collection box (11), and the collection box (11) is of a hollow structure.

5. The blackboard eraser for teaching of actively collecting chalk dust according to claim 1, characterized in that: the collection box (11) top reserve piece (4) and lid (2) inside reserve groove (18) constitute and dismantle mounting structure, evenly be provided with the internal thread on the inside wall of reserve groove (18), evenly be provided with the external screw thread of mutually supporting with the internal thread on the lateral wall of reserve piece (4).

6. The blackboard eraser for teaching of actively collecting chalk dust according to claim 1, characterized in that: the lugs (19) at the two ends of the wiping block (13) form a sliding structure with the sliding cavity (15) through the bayonets (16).