CN214355225U

CN214355225U - Electrostatic dust absorption environment-friendly blackboard eraser

Info

Publication number: CN214355225U
Application number: CN202022419723.9U
Authority: CN
Inventors: 李疆; 李琛; 宋忠康
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-10-08
Anticipated expiration: 2030-10-27

Abstract

The utility model discloses an electrostatic dust collection environment-friendly blackboard eraser, which comprises a shell, wherein the shell is of a cavity structure with an opening at the top, an air outlet is arranged at the side part of the shell, a filter screen is arranged on the air outlet, the top of the shell is detachably connected with a dust collection device, and a dust collection device is arranged in the inner cavity of the shell; the dust collecting device comprises an electrode plate and a dust wiping head contacted with the electrode plate, a plurality of through holes are uniformly distributed on the surface of the electrode plate, and the lower end of the electrode plate is clamped on the top of the shell; the dust collection device comprises a suction fan, a motor and a power supply, wherein the power supply is connected with the motor and supplies power to the motor, a magnetic switch for starting and stopping the motor is arranged on the outer side of the shell, the suction fan is arranged in the middle of the inner cavity of the shell and is opposite to the electrode plate, and the suction fan is connected with a rotating shaft of the motor. The utility model discloses a dust collecting device and dust extraction's cooperation has reached better dust absorption effect, and very big reduction the dust flies upward everywhere.

Description

Electrostatic dust absorption environment-friendly blackboard eraser

Technical Field

The utility model belongs to the technical field of teaching articles for use technique and specifically relates to an electrostatic dust absorption environment-friendly blackboard eraser is related to.

Background

At present, most of schools in China still adopt chalks to make blackboard writing in classroom teaching, dust generated by chalks can splash everywhere when the blackboard eraser is used for erasing a blackboard, so that the body health of teachers and students can be seriously affected, particularly in summer, people easily sweat, and the dust floating in the air can be adhered to the skin, so that skin cancer is easily caused.

The blackboard eraser usually used is mostly composed of a dust brush and a fixed plate, dust does not have an output channel and is gathered at two side edges of the dust brush, and along with the action of erasing the blackboard, the dust flies from the side edges of the dust brush to the air. In order to reduce the flying of the dust, some dust-absorbing blackboard erasers gradually appear in the market, and the purpose of reducing the flying of the dust is achieved by adding a fan blade device to absorb the dust by wind power and transferring the absorbed dust into a storage box. However, the dust is not effectively absorbed only by the attraction of the wind, most of the dust is always adsorbed on the dust brush, and only a small amount of dust enters the storage box under the attraction of the wind.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing an electrostatic dust absorption environment-friendly blackboard eraser can effectively adsorb the dust, reduces flying upward of dust, and is light and handy portable.

To achieve the above object, the present invention adopts the following:

an environment-friendly electrostatic dust collection blackboard eraser comprises a shell, wherein the shell is of a cavity structure with an open top, an air outlet is formed in the side part of the shell, a filter screen is mounted on the air outlet, a dust collection device is detachably connected to the top of the shell, and a dust collection device is arranged in an inner cavity of the shell; the dust collecting device comprises an electrode plate and a dust wiping head in contact with the electrode plate, a plurality of through holes are uniformly distributed on the surface of the electrode plate, and the lower end of the electrode plate is clamped at the top of the shell; the dust collection device comprises a suction fan, a motor and a power supply, wherein the power supply is connected with the motor and supplies power to the motor, a magnetic switch for starting and stopping the motor is arranged on the outer side of the shell, the suction fan is arranged in the middle of the inner cavity of the shell and is opposite to the electrode plate, and the suction fan is connected with a rotating shaft of the motor.

The utility model discloses a set up dust collecting device, the dust in the dust collecting device is wiped the head and can produce static when with the blackboard frictional contact, and this static can conduct to the plate electrode, thereby adsorb the dust on the surface of plate electrode, avoided the dust to fly upward everywhere, and the dust extraction of casing inside relies on the suction that the suction fan produced to inhale the dust in plate electrode surface and the air inside the casing through the through-hole on the plate electrode, then the air is discharged from the filter screen, the dust is stayed inside the casing, in addition, dust collecting device can dismantle with the casing and be connected, after having wiped the blackboard, dismantle dust collecting device from the casing, remaining dust on the plate electrode can knock the plate electrode into the casing internal cavity through colliding with the plate electrode slightly, collect the dust all concentrate inside the casing, pour into the garbage bin again at last, the utility model discloses a cooperation of dust collecting device and dust extraction device, the dust collector achieves a better dust collection effect and greatly reduces the flying of dust all around.

Preferably, the lower extreme both sides of electrode plate set up elastic pothook relatively, are provided with the draw-in groove in the outside upper end of casing, the draw-in groove corresponds the setting with the pothook to the joint cooperation. Inside dust of the overwhelming majority on the dust collecting device can be inhaled the casing by dust extraction, partly dust still stayed on the plate electrode in addition, become dust collecting device and casing design can dismantle, firstly handle remaining dust on the plate electrode for convenience, secondly clear up the dust of collecting inside the casing for convenience.

Preferably, the peripheral edge of the bottom of the electrode plate and the peripheral edge of the inner side of the top of the shell are both provided with rubber sealing strips. This is to prevent a gap from occurring at a place where the housing is connected to the dust collecting device, and to prevent dust collected inside the housing from leaking out through the gap.

Preferably, the exhaust outlet has two, and the two exhaust outlets are oppositely arranged on the left side and the right side of the shell. The purpose is to discharge the wind power generated by the suction fan from the inside of the shell, so that the problem that the wind power generated by the suction fan cannot be dissipated due to sealing inside the shell, and dust in the shell violently flies is solved.

Preferably, the dust wiping head is a strip-shaped structure made of sponge, and the plurality of dust wiping heads are distributed at the upper end of the electrode plate at intervals. Because the difference between the work functions of the dust wiping head made of the sponge material and the dust is large, static electricity is more easily generated during mutual friction, and the electrode plate is convenient to adsorb the dust.

Preferably, the power source is a lithium ion battery. High safety and long service life.

Preferably, a solar panel is mounted at the bottom of the casing, a voltage reduction power module is arranged in the casing, and the solar panel supplies power to the lithium ion battery through the voltage reduction power module. The blackboard eraser can be placed in a place with sufficient sunlight for charging, and is economical and practical.

Preferably, a USB female socket is disposed on a side of the housing, and the USB female socket is electrically connected to the lithium ion battery. The charging is more stable.

Compared with the prior art, the utility model has the advantages of it is following: the utility model discloses a set up dust collecting device, the dust in the dust collecting device is wiped the head and can produce static when with the blackboard frictional contact, and this static can conduct to the plate electrode, thereby adsorb the dust on the surface of plate electrode, avoided the dust to fly upward everywhere, and the dust extraction of casing inside relies on the suction that the suction fan produced to inhale the dust in plate electrode surface and the air inside the casing through the through-hole on the plate electrode, then the air is discharged from the filter screen, the dust is stayed inside the casing, in addition, dust collecting device can dismantle with the casing and be connected, after having wiped the blackboard, dismantle dust collecting device from the casing, remaining dust on the plate electrode can knock the plate electrode into the casing internal cavity through colliding with the plate electrode slightly, collect the dust all concentrate inside the casing, pour into the garbage bin again at last, the utility model discloses a cooperation of dust collecting device and dust extraction device, the dust collector achieves a better dust collection effect and greatly reduces the flying of dust all around.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of an electrostatic dust-absorbing environmental-friendly blackboard eraser of the present invention;

FIG. 2 is an exploded view of an electrostatic dust-absorbing environmental-friendly blackboard eraser of the present invention;

fig. 3 is a top view of the interior of the housing of the present invention;

in the figures, the various reference numbers are:

1-shell, 2-dust collecting device, 3-dust collecting device, 4-solar panel, 5-rubber sealing strip, 6-filter screen, 11-air outlet, 12-card slot, 21-electrode plate, 22-dust wiping head, 23-through hole, 24-clamping hook, 31-power supply, 32-motor, 33-suction fan, 34-voltage reduction power supply module, 35-USB female seat and 36-magnetic switch.

Detailed Description

In order to illustrate the invention more clearly, the invention is further described below with reference to preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.

As shown in fig. 1, 2 and 3, the utility model provides an environment-friendly electrostatic dust collection blackboard eraser, which comprises a casing 1, wherein the casing 1 is of a cavity structure with an open top, an air outlet 11 is arranged at the side part of the casing 1, a filter screen 6 is arranged on the air outlet 11, a dust collection device 2 is detachably connected to the top of the casing 1, and a dust collection device 3 is arranged in the inner cavity of the casing 1; the dust collecting device 2 comprises an electrode plate 21 and a dust wiping head 22 contacted with the electrode plate 21, a plurality of through holes 23 are uniformly distributed on the surface of the electrode plate 21, and the lower end of the electrode plate 21 is clamped at the top of the shell 1; the dust collector 3 comprises a suction fan 33, a motor 32 and a power supply 31, wherein the power supply 31 is connected with the motor 32 and supplies power to the motor 32, a magnetic switch 36 for starting and stopping the motor 32 is arranged on the outer side of the shell 1, the suction fan 33 is arranged in the middle of the inner cavity of the shell 1 and is opposite to the electrode plate 21, and the suction fan 33 is connected with the rotating shaft of the motor 32.

Preferably, elastic hooks 24 are oppositely arranged on two sides of the lower end of the electrode plate 21, a clamping groove 12 is arranged at the upper end of the outer side of the shell 1, and the clamping groove 12 and the hooks 24 are correspondingly arranged and are in clamping fit. Inside dust of the overwhelming majority on the dust collecting device can be inhaled the casing by dust extraction, partly dust still stayed on the plate electrode in addition, become dust collecting device and casing design can dismantle, firstly handle remaining dust on the plate electrode for convenience, secondly clear up the dust of collecting inside the casing for convenience.

It should be noted that, the electrode plate 21, the suction fan 33, the motor 32, the power source 31, the magnetic switch 36, the hook 24 and the slot 12 of the present invention are all the components known by the general standard or the technicians in this field, and the structure and principle of the present invention can be known by the technical manual or by the conventional experimental method, the present invention solves the problem that the existing blackboard eraser can not effectively solve the problem of dust generated by chalk, causing dust flying around in the air, and the market also presents a technology of arranging the suction fan inside the blackboard eraser, but the dust can not be completely absorbed into the collecting box only by the suction force of the suction fan, and only a small amount of absorption can be achieved, and the present invention, by arranging the dust collecting device 2, the dust is firstly absorbed onto the electrode plate 21 by static electricity, most of the dust absorbed onto the electrode plate 21 by the dust absorbing device 3 arranged inside the casing 1, even if there are few part dust to inhale like this, they also can still adsorb on the electrode plate surface, can not fly upward in the air, the utility model discloses a dust collecting device and dust extraction's cooperation has reached better dust extraction, and very big reduction the dust all around fly upward.

In order to prevent a gap from occurring at a place where the housing 1 is connected to the dust collecting device 2, dust collected inside the housing is prevented from leaking out from the gap. Rubber seal strips 5 are arranged on the peripheral edges of the bottom of the electrode plate 21 and the peripheral edges of the inner side of the top of the shell 1.

In order to well discharge the wind power generated by the suction fan 33 from the inside of the casing 1, the problem that the wind power generated by the suction fan 33 cannot be dissipated due to sealing inside the casing 1, so that dust in the casing is violently blown is solved. Therefore, two air outlets 11 are oppositely arranged on the left side and the right side of the shell 1, the filter screen 6 is arranged on the air outlets 11, the aperture of the filter screen 6 is smaller than the particle size of dust, so that the dust suction device in the shell sucks the dust on the surface of the electrode plate and in the air into the shell through the through holes on the electrode plate by means of the suction force generated by the suction fan, then the air is discharged from the filter screen, the dust is remained in the shell, and the dust collected in the shell cannot be scattered around due to wind power.

In order to make the dust eraser head 22 generate static electricity more easily when in frictional contact with the blackboard, so that the static electricity is conducted to the electrode plate 21, the dust eraser head 22 is made of sponge materials, the work function difference between the sponge materials and the dust is large, the static electricity is easily generated when in mutual friction, and the dust eraser head is made into a long strip-shaped structure, a plurality of dust eraser heads are arranged at the upper end of the electrode plate respectively at intervals, and the dust eraser head has the advantages that along with the action of erasing the blackboard, the dust can fall on the surface of the electrode plate from the gap between the dust eraser heads and is adsorbed by the static electricity.

As preferred scheme, the utility model provides a lithium ion battery that power 31 adopted, its security performance is good, longe-lived, can charge.

Based on the fact that the power supply adopts a rechargeable lithium ion battery, the bottom of the shell 1 is provided with the solar electric plate 4, the interior of the shell 1 is provided with the voltage reduction power supply module 34, and the solar electric plate 4 supplies power to the lithium ion battery through the voltage reduction power supply module 34. Regarding how the solar panel absorbs the energy of sunlight, how to convert the absorbed energy into specific principle and structure of electric energy, the technical staff can learn through the technical manual or learn through conventional experimental methods, the utility model discloses do not do this too much and describe repeatedly.

In addition, a conventional charging method using a charger may be used to charge the lithium ion battery, and a USB socket 35 is disposed on a side of the housing 1, and the UBS socket 35 is electrically connected to the lithium ion battery. The way for the USB female socket to be in circuit connection with the lithium ion battery belongs to the prior art.

The utility model discloses a set up dust collecting device, the dust among the dust collecting device is wiped the head and can produce static when with blackboard frictional contact, and this static can conduct to the plate electrode on, thereby adsorb the dust on the surface of plate electrode, it flies upward everywhere to have avoided the dust, and the inside dust extraction of casing then relies on the produced suction of suction fan to inhale the casing inside with the dust in plate electrode surface and the air through the through-hole on the plate electrode, then the air is discharged from the filter screen, the dust is stayed inside the casing, in addition, dust collecting device can dismantle with the casing and be connected, after having wiped the blackboard, dismantle dust collecting device from the casing, remaining dust accessible on the plate electrode collides with the plate electrode slightly and knocks into the inside cavity of casing with the dust, the dust that will collect is whole to be concentrated inside the casing, pour into the garbage bin again at last.

Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it is obvious for those skilled in the art to make other variations or changes based on the above descriptions, and all the embodiments cannot be exhausted here, and all the obvious variations or changes that belong to the technical solutions of the present invention are still in the protection scope of the present invention.

Claims

1. An environment-friendly electrostatic dust collection blackboard eraser is characterized by comprising a shell, wherein the shell is of a cavity structure with an open top, an air outlet is formed in the side part of the shell, a filter screen is mounted on the air outlet, a dust collection device is detachably connected to the top of the shell, and a dust collection device is arranged in an inner cavity of the shell; the dust collecting device comprises an electrode plate and a dust wiping head in contact with the electrode plate, a plurality of through holes are uniformly distributed on the surface of the electrode plate, and the lower end of the electrode plate is clamped at the top of the shell; the dust collection device comprises a suction fan, a motor and a power supply, wherein the power supply is connected with the motor and supplies power to the motor;

elastic clamping hooks are oppositely arranged on two sides of the lower end of the electrode plate, a clamping groove is arranged at the upper end of the outer side of the shell, the clamping groove and the clamping hooks are correspondingly arranged and are in clamping fit,

the two air outlets are oppositely arranged on the left side and the right side of the shell;

the dust wiping head is of a strip-shaped structure made of sponge, and a plurality of dust wiping heads are distributed at the upper end of the electrode plate at intervals;

rubber sealing strips are arranged on the peripheral edge of the bottom of the electrode plate and the peripheral edge of the inner side of the top of the shell;

the power supply is a lithium ion battery;

the solar panel is installed at the bottom of the shell, the voltage reduction power module is arranged in the shell, and the solar panel supplies power to the lithium ion battery through the voltage reduction power module.

2. The electrostatic dust absorption environment-friendly blackboard eraser as claimed in claim 1, wherein a USB female socket is provided at a side of the housing, and the USB female socket is electrically connected with a lithium ion battery.