CN204309480U - A kind of dust suction environment-friendly dust-proof eraser - Google Patents

Abstract

The utility model relates to a dust-absorbing environment-friendly blackboard eraser, which comprises an inverted L-shaped casing, a front cover is arranged at the front of the casing, a battery compartment cover is arranged at the rear, and an upper cover is arranged at the top; two Strips of parallel wiping felts are provided with dust inlets around the wiping felts, and board wipers are arranged around the dust inlets; in the shell, a dust suction fan is set in the shell on the short side of the inverted L, and is located on the long side of the inverted L A battery compartment is installed in the side shell, and a battery for powering the dust collection fan is installed in the battery compartment; a zigzag passage is provided at the rear of the battery compartment, and the entrance of the zigzag passage is connected with the dust inlet; a dust collection device is installed under the battery compartment. The inlet of the dust collection bin communicates with one outlet of the zigzag passage; the other outlet of the zigzag passage communicates with the space where the dust suction fan is installed, and a filter screen is arranged at the connection. The utility model can effectively avoid environmental pollution and can be widely used in various fields.

Description

A dust-absorbing environment-friendly blackboard eraser

technical field

The utility model relates to an office product, in particular to a dust-absorbing environment-friendly blackboard eraser for cleaning classroom blackboards.

Background technique

With the development of society, indoor air quality has gradually been paid attention to by people. At present, most of the blackboard erasers on the market need to wipe the blackboard manually, which is not only laborious when wiping the blackboard, but also generates a lot of dust when wiping, causing the dust to flood and fly everywhere, seriously affecting the health of teachers and students in the classroom , and pollute the surrounding environment, endangering the health of the surrounding people.

Contents of the invention

In view of the above problems, the purpose of this utility model is to provide a dust-absorbing environment-friendly blackboard eraser, which can effectively clean the chalk writing on the blackboard, and at the same time effectively collect chalk dust, avoid environmental pollution, and ensure the hygiene of the surrounding environment and indoor personnel. physical and mental health.

In order to achieve the above object, the utility model adopts the following technical solutions: a dust-absorbing environmental protection blackboard eraser, which is characterized in that it includes an inverted L-shaped casing, a front cover, a battery compartment cover, an upper cover, a wiping felt, a dust inlet, and an eraser hair, dust suction fan, battery compartment, zigzag channel, dust collection compartment and filter screen; the front cover is provided on the front of the shell, the battery compartment cover is provided on the rear, and the upper cover is provided on the top; Two parallel wiper felts are arranged in the middle of the front cover, the dust inlet is arranged around the wiper felt, and the board wipers are arranged around the dust inlet; Inside, the dust suction fan is arranged in the casing located on the short side of the inverted L, the battery compartment is installed in the casing located on the long side of the inverted L, and the suction fan is installed in the battery compartment. A battery powered by a dust fan; the zigzag passage is provided at the rear of the battery compartment, and the entrance of the zigzag passage communicates with the dust inlet; the dust collection bin is provided below the battery compartment, and the The inlet of the dust collection bin communicates with one outlet of the zigzag passage; the other outlet of the zigzag passage communicates with the space where the dust suction fan is installed, and the filter screen is arranged at the communication place.

Both the front cover and the upper cover are fixed on the casing by connecting screws, and a molded packing seal is provided at the connection between the front cover and the casing.

The packing seal adopts O-shaped rubber ring.

A dust discharge plug is provided at the bottom of the dust collection bin.

An air outlet is arranged on the upper cover.

A switch for controlling the operation of the battery is arranged on one side wall of the casing.

Because the utility model adopts the above technical scheme, it has the following advantages: 1. Because the utility model adopts the dust suction fan to cooperate with the zigzag channel, the blackboard is cleaned by wiping the felt and the board wiper hair, and the chalk dust produced when wiping the blackboard is cleaned. Filtration and collection avoid environmental pollution, sanitation of the surrounding environment and physical and mental health of indoor personnel. 2. Through the absorption of the dust suction fan, the filtration of the filter screen and the turning and sealing of the zigzag channel, when the chalk dust is generated by wiping the blackboard, the dust suction fan passes the chalk dust together with the air through the dust inlet opened on the front cover Suction tortuous channel, when the two-phase flow reaches the filter screen, due to the filtering effect of the filter screen, the air driven by the chalk dust passes through the filter screen and the fan is discharged through the air outlet of the upper cover of the eraser, while the chalk dust is filtered by the filter screen, Finally, after the dust suction fan stops, it falls into the dust collection bin, effectively cleaning the chalk writing on the blackboard and effectively collecting chalk dust. 3. Due to the turning effect of the zigzag channel, the collected chalk dust will not be poured out when the blackboard eraser is overturned or dumped, thereby effectively preventing environmental pollution caused by flying dust when wiping the blackboard. The utility model can be widely applied in various fields.

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is a schematic structural view of the utility model after removing the battery compartment cover and the upper cover;

Fig. 3 is a front sectional view of Fig. 1;

Fig. 4 is a side view of Fig. 1;

FIG. 5 is a top view of FIG. 1 .

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail.

As shown in Figures 1 to 5, the utility model provides a dust-absorbing environmental protection blackboard eraser, which includes an inverted L-shaped casing 1, a front cover 2, a battery compartment cover 3, an upper cover 4, a wiping felt 5, and a dust inlet 6 , Board eraser hair 7, dust suction fan 8, battery compartment 9, zigzag channel 10, dust collection bin 11 and filter screen 12.

The front part of the housing 1 is provided with a front cover 2 , the rear part is provided with a battery compartment cover 3 , and the top part is provided with an upper cover 4 . Two parallel wiping felts 5 are arranged at the middle position of the front cover 2, and a dust inlet 6 is arranged on the periphery of the wiping felts 5, and a blackboard wiper hair 7 is arranged on the periphery of the dust inlet 6. When wiping a blackboard, the wiping felts 5 will The chalk writing is wiped off from the blackboard, and then the chalk ash that is wiped and piled up is atomized by the blackboard eraser hair 7. As shown in Figure 3, in the casing 1, a dust suction fan 8 is arranged in the casing 1 located on the short side of the inverted L. After the dust suction fan 8 is started, the two-phase flow formed by atomized chalk dust and air can pass through the inlet. The dust port 6 is sucked into the casing 1 . A battery compartment 9 is arranged in the housing 1 located on the long side of the inverted L, and a battery for powering the dust collection fan 8 is installed in the battery compartment 9, and the battery compartment cover 3 can be easily disassembled to replace the battery (as shown in Figures 1 and 3 ); a meandering channel 10 is provided at the rear of the battery compartment 9 , and the entrance of the meandering channel 10 communicates with the dust inlet 6 . A dust collection bin 11 is arranged below the battery compartment 9, the inlet of the dust collection bin 11 communicates with an outlet of the zigzag passage 10; the other outlet of the zigzag passage 10 communicates with the space where the dust suction fan 8 is installed, and a There is a filter screen 12, which is used to filter the collected chalk dust and finally make the chalk dust fall into the dust collection bin 11.

In the above-mentioned embodiment, as shown in Fig. 1 and Fig. 4, both the front cover 2 and the upper cover 4 are fixed on the casing 1 by connecting screws 13, and a molded packing seal 14 is provided at the joint between the front cover 2 and the casing 1, To ensure that there is only one air inlet of the dust inlet 6, and then increase the dust collection effect of the dust suction fan 8. Packing seal 14 can adopt O type rubber ring etc. When wiping felt 5 and blackboard eraser wool 7 wear and tear and can't normally use, can disassemble and replace by connecting screw 13. The upper cover 4 can be opened by connecting screws 13, and the dust suction fan 8 can be taken out after opening, and the dust suction fan 8 and the filter screen 12 can be cleaned and maintained.

In each of the above-mentioned embodiments, as shown in Figure 3, a dust discharge plug 15 is provided at the bottom of the dust collection bin 11, and when a certain amount of chalk dust is collected, the dust discharge plug 15 can be opened for centralized processing of the chalk dust.

In the above-mentioned embodiments, as shown in FIG. 1 and FIG. 5 , the upper cover 4 is provided with an air outlet 16 for exhausting the gas sucked by the dust suction fan 8 into the casing 1 .

In the above-mentioned embodiments, as shown in FIG. 1 and FIG. 2 , a switch 17 for controlling the operation of the battery is provided on the side wall of the casing 1 .

In summary, when the utility model is in use, the battery compartment cover 3 is first taken off, the battery compartment cover 3 is covered after the battery is put into the battery, the switch 17 is opened, and the dust suction fan 8 starts to rotate. Now wipe the chalk characters on the blackboard, the chalk characters will be wiped off under the wiping effect of the wiping felt 5, and the chalk dust that accumulates to produce is further atomized by the blackboard eraser hair 7 of the blackboard eraser outer layer, and the suction of the dust suction fan 8 Under the action, the gas-solid two-phase flow formed by chalk dust and air is sucked into the zigzag passage 10 from the dust inlet 6, and after being filtered by the filter screen 12 at the outlet of the zigzag passage 10, the gas is discharged from the air outlet 16, and the chalk Ash is filtered by filter screen 12. After the blackboard was wiped, the switch 17 was closed, and the dust suction fan 8 stopped rotating, and the chalk dust filtered was dropped into the dust collection bin 11. Due to the sealing function of the tortuous channel 10, no matter how the blackboard eraser is tilted upside down, the chalk dust collected will not be spilled. When the chalk dust is collected to a certain amount, the dust discharge plug 15 can be opened and the chalk dust is poured out for centralized processing.

The above-mentioned embodiments are only used to illustrate the utility model, and the connection and structure of each component can be changed. Improvements and equivalent transformations should not be excluded from the protection scope of the present utility model.

Claims (9)

1. a dust suction environment-friendly dust-proof eraser, is characterized in that: it comprises inverted L shape shell, protecgulum, battery cabin cap, upper cover, wiping felt, entering-dust mouth, blackboard eraser hair, dust absorption fan, battery compartment, tortuous passageway, dust collection storehouse and filter screen;

Described housing front is provided with described protecgulum, and rear portion is provided with described battery cabin cap, and top is provided with described upper cover; Described protecgulum middle position is provided with two parallel described wiping felts, is positioned at described wiping felt periphery and is provided with described entering-dust mouth, described entering-dust mouth periphery is provided with described blackboard eraser hair; In described shell, the described shell being positioned at the short brink of falling L is provided with described dust absorption fan, and the described shell being positioned at the long side of falling L is provided with described battery compartment, installs the battery that promising described dust absorption fan is powered in described battery compartment; Described battery compartment rear portion is provided with described tortuous passageway, and the entrance of described tortuous passageway is communicated with described entering-dust mouth; Be positioned at below described battery compartment and be provided with described dust collection storehouse, the import in described dust collection storehouse and an outlet of described tortuous passageway; Another outlet of described tortuous passageway is communicated with the space of installing described dust absorption fan, and this connectivity part is provided with described filter screen.

2. a kind of dust suction environment-friendly dust-proof eraser as claimed in claim 1, is characterized in that: described protecgulum and upper cover are all fixing on the housing by attachment screw, and described protecgulum and described shell junction are provided with shaping packing seal.

3. a kind of dust suction environment-friendly dust-proof eraser as claimed in claim 2, is characterized in that: described packing seal adopts O type rubber ring.

4. a kind of dust suction environment-friendly dust-proof eraser as described in claim 1 or 2 or 3, is characterized in that: be provided with dust discharge plug bottom described dust collection storehouse.

5. a kind of dust suction environment-friendly dust-proof eraser as described in claim 1 or 2 or 3, is characterized in that: cover on described and be provided with exhaust outlet.

6. a kind of dust suction environment-friendly dust-proof eraser as claimed in claim 4, is characterized in that: cover on described and be provided with exhaust outlet.

7. a kind of dust suction environment-friendly dust-proof eraser as described in claim 1 or 2 or 3 or 6, is characterized in that: be positioned on the sidewall of described shell side and be provided with for controlling described battery operated switch.

8. a kind of dust suction environment-friendly dust-proof eraser as claimed in claim 4, is characterized in that: be positioned on the sidewall of described shell side and be provided with for controlling described battery operated switch.

9. a kind of dust suction environment-friendly dust-proof eraser as claimed in claim 5, is characterized in that: be positioned on the sidewall of described shell side and be provided with for controlling described battery operated switch.