CN111644440A - Chalk writing dust-proof device - Google Patents

Abstract

The invention discloses a dust-proof device for chalk writing, comprising a dust-proof cover, one end of the dust-proof cover is connected with a telescopic unit, the telescopic unit is connected with a fixed part, and the bottom of the dust-proof cover is provided with a dust-collecting part. In the process of writing with chalk, dust-proof dust can fly out and cause damage to personnel and electronic equipment. During the writing process, dust and dust can be removed in real time, avoiding the dust generated during writing.

Description

Chalk writing dustproof device

technical field

The invention relates to the field of teaching appliances, in particular to a dust-proof device for chalk writing.

Background technique

Chalk is an indispensable tool in the teaching process. Chalk dust will inevitably be generated in the process of writing with chalk. Chalk is non-toxic, but chalk dust is harmful! The fine particles of chalk ash have a strong ability to absorb bacteria, and the components of chalk are alkaline substances. Harmful germs and alkaline substances can easily cause inflammation, dryness, atrophy, itching, chapped, lung cancer, emphysema and kidney damage to the respiratory system, skin, ears, nose and throat of teachers and students. Students undertake the task of cleaning the blackboard and stay in the classroom from morning to night. Chalk dust is more harmful to the health of underage students with poor resistance. Modern classrooms generally have computers and a lot of multimedia equipment. Dust is also very harmful to computers and multimedia equipment. Dust may cause short circuits of components, and dust is too thick to affect heat dissipation. Dust dirty fans will affect rotation speed and accelerate aging. The impact of dust on the components and parts in many electronic products cannot be ignored. The seriously affected include resistors, capacitors, inductors, transistors, integrated circuits, transformers, laser heads, photocells, connectors, switches, picture tubes, printed circuit boards, etc. For example: when the dust accumulates at both ends of the resistor, it is equivalent to a resistor composed of dust and the original resistor in parallel, and the resistance value after parallel connection must be smaller than the original resistance value. If a place requires strict insulation, and the resistance value of dust is 5MΩ (no dust is ∞), it will still be 5MΩ after parallel connection. This 5MΩ resistance will cause faults in the circuit, which may not have much impact on occasions with low requirements, but in places with strict requirements, such a situation will cause electrical breakdown, leakage, flashover and even serious accidents.

It can be seen that for the classrooms and multimedia classrooms that we are using now. In the case of integrating our educational resources and promoting our teaching development, it also faces dust hazards, reduced service life, circuit board damage and other failures. When a failure occurs, it not only loses money, but also loses teaching time, endangering teachers and students. healthy. In the prior art, there is no tool that can prevent dust and dust during writing, so it is very necessary to invent a device that can prevent dust when writing with chalk.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned problems, the present invention discloses a dust-proof device for chalk writing, and a dust-proof device for chalk writing, which is characterized by comprising a dust cover, one end of the dust cover is connected with a telescopic unit, and the telescopic unit is connected to A fixing part is provided, and a dust collecting part is provided at the bottom of the dust cover. In the process of writing with chalk, dust and dust can fly out and cause damage to personnel and electronic equipment. During the writing process, dust and dust can be removed in real time, avoiding the dust generated during writing.

Further, the dust collecting component includes a dust collecting port, and the dust collecting port is connected with the dust cover. Easy dust collection.

Further, a dust collecting box is provided at the bottom of the dust collecting member. Easy dust collection.

Further, an air suction pump is provided on the dust collecting member. Good dust removal effect.

Further, a filter member is provided in the dust collecting member, and the filter member isolates the air suction pump from the dust collecting member. Prevent dust from entering the pump and causing damage to the pump.

Further, an atomizing device is provided in the dust collecting component. Reduce dust and facilitate dust recycling.

Further, an atomizing device is arranged in the dust cover. Reduce dust and facilitate dust recycling.

Further, the dust cover is made of transparent material. It is convenient to see the handwriting on the blackboard during the writing process.

Further, the end of the dust cover is provided with rolling balls. Prevent the device from rubbing against the blackboard and erasing the writing on the blackboard.

Further, a plate wiper is arranged in the dust cover. Dust-proof and dust-proof during blackboard or day shift erasing.

Beneficial effects: the present invention can prevent dust and dust from flying out in the process of writing with chalk and cause damage to personnel and electronic equipment, and can remove dust and dust in real time during the writing process, avoid the dust generated during writing, and can also be used on the blackboard or on the blackboard. The device is simple and practical, powerful in function, and has a great prospect of popularization and application.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the structural schematic diagram of the dust collecting component of the present invention;

Figure 3 is a schematic view of the rolling ball structure of the present invention;

4 is a schematic structural diagram of Embodiment 4 of the present invention;

5 is a schematic structural diagram of Embodiment 6 of the present invention;

In the figure, 1-dust cover, 2-extension unit, 3-fixed part, 4-dust collecting part, 5-rolling ball, 6-atomizing device, 7-plate wiper, 41-dust collecting port, 42-dust collecting box, 43- suction pump, 44- dust box.

Detailed ways

It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

In the description of the present invention, it should be understood that the terms "center", "portrait", "horizontal", "top", "bottom", "front", "rear", "left", "right", " The orientation or positional relationship indicated by vertical, horizontal, top, bottom, inner, outer, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and The description is simplified rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1

As shown in Figure 1-3, the dust-proof device for chalk writing includes a dust-proof cover 1, which is made of transparent and lightweight plastic and has a bell mouth shape. One end of the small mouth of the dust-proof cover 1 is connected with a telescopic unit 2. The telescopic unit 2 is a light A mass spring is wrapped with a dust-proof cloth on the surface, a fixed part 3 is connected to the telescopic unit 2, and the fixed part 3 is an elastic sleeve; the bottom of the dust cover 1 is provided with a dust-collecting part 4, and the dust-collecting part 4 includes a dust-collecting port 41 , the dust collecting port 41 is connected to the bottom of the dust cover 1 , and the bottom of the dust collecting member 4 is provided with a dust collecting box 42 .

When in use, put the fixed part 3 on the writing wrist, put your hand into the dust cover 1 and pick up the chalk from the big mouth to write. The dust cover 1 is in contact with the blackboard under the action of the telescopic unit 2, preventing the The dust flies out, and finally enters the dust collecting port 41, and can be collected in the dust collecting box 42 at the bottom of the dust collecting member 4.

Example 2

This embodiment is further optimized on the basis of Embodiment 1. Specifically, the dust collecting part 4 is provided with an air suction pump 43, and the dust collecting part 4 is provided with a filter part 44. The filter part 44 connects the air suction pump 43 with the air suction pump 43. The dust collecting part 4 is separated, and the dust is filtered by a filter screen to prevent the dust from entering the suction pump 43 . Use battery power.

Use the vacuum cleaner principle to collect chalk dust dust, the effect is better.

Example 3

This embodiment is further optimized on the basis of Embodiment 2. Specifically, the dust collecting component 4 is provided with an atomizing device 6, and the atomizing device 6 includes a water storage tank and a spray nozzle. Use battery power. The atomizing device 6 sprays mist to reduce dust. Facilitates dust collection.

Example 4

This embodiment is further optimized on the basis of Embodiment 3. Referring to FIG. 4 , specifically, the dust cover 1 is provided with an atomizing device 6 , and the atomizing device 6 includes a water storage tank and a spray nozzle. Use battery power. The atomizing device 6 sprays mist to reduce dust. Facilitates dust collection.

Example 5

This embodiment is further optimized on the basis of Embodiments 1-4. Specifically, the end of the dust cover 1 is provided with rolling balls 5 . The rolling balls 5 are spherical, installed in the grooves of the hemisphere row, can rotate in all directions, and are evenly installed at the contact end of the dust cover 1 and the blackboard. Prevent the device from rubbing against the blackboard and erasing the writing on the blackboard.

Example 6

This embodiment is further optimized on the basis of Embodiments 1-4. Referring to FIG. 5 , the dust cover 1 is provided with a matching plate wiper 7 . It can be used when erasing the blackboard, dust and dust during the erasing process of the blackboard or day shift.

Example 7

As shown in Figure 1-3, the dust-proof device for chalk writing includes a dust-proof cover 1, which is made of transparent and lightweight plastic and has a bell mouth shape. One end of the small mouth of the dust-proof cover 1 is connected with a telescopic unit 2. The telescopic unit 2 is a light A mass spring is wrapped with a dustproof cloth on the surface, a fixed part 3 is connected to the telescopic unit 2, and the fixed part 3 is an elastic sleeve; the bottom of the dust cover 1 is provided with a dust collecting part 4, and the dust collecting part 4 is a purchased micro vacuum cleaner .

When in use, put the fixing part 3 on the writing wrist, put the hand into the dust cover 1 and pick up the chalk from the big mouth to write, and turn on the switch of the dust collecting part 4 . Powered by a battery, the dust cover 1 is in contact with the blackboard under the action of the telescopic unit 2 to prevent the dust from flying out during the writing process.

Example 7

As shown in Figure 1-3, the dust-proof device for chalk writing includes a dust-proof cover 1, which is made of transparent and lightweight plastic and has a bell mouth shape. One end of the small mouth of the dust-proof cover 1 is connected with a telescopic unit 2. The telescopic unit 2 is a light A quality retractable frame, the surface is covered with a dustproof cloth, a fixed part 3 is connected to the telescopic unit 2, and the fixed part 3 is a Velcro strap; the bottom of the dust cover 1 is provided with a dust collecting part 4, and the dust collecting part 4 is purchased For the micro vacuum cleaner, the end of the dust cover 1 is provided with rolling balls 5 . The rolling balls 5 are spherical, installed in the grooves of the hemisphere row, can rotate in all directions, and are evenly installed at the contact end of the dust cover 1 and the blackboard. Prevent the device from rubbing against the blackboard and erasing the writing on the blackboard. An atomizing device 6 is arranged in the dust cover 1, and the atomizing device 6 includes a water storage tank and a spray nozzle. Use battery power. The atomizing device 6 sprays mist to reduce dust. Facilitates dust collection.

When in use, put the fixing part 3 on the writing wrist and fix it with Velcro, put your hand into the dust cover 1 and pick up the chalk from the big mouth to write, adjust the telescopic unit 2 to the appropriate position, turn on the dust collecting part 4 switch and Atomizer 6 switch. Powered by a battery, the dust cover 1 rotates on the blackboard contact balls 5 under the action of the telescopic unit 2 to reduce friction and prevent the dust from flying out during the writing process.

It can prevent dust and dust from flying out in the process of writing with chalk and cause damage to personnel and electronic equipment. During the writing process, dust and dust can be removed in real time, avoiding the dust generated during writing, and the atomizing device 6 can be humidified to prevent the use of chalk. The hand skin of the device is dry, cracked and rough due to the chalk dust and dust, and the hand is protected when using the chalk. The device is simple and practical, has powerful functions, and has great promotion and application prospects.

The above-mentioned embodiment only describes the optimal use of the existing equipment, and the use of similar common mechanical means to replace the elements in this embodiment falls within the scope of protection.

Claims (10)

1. Chalk writing dust keeper, its characterized in that: the dust collection device is characterized by comprising a dust cover (1), wherein one end of the dust cover (1) is connected with a telescopic unit (2), the telescopic unit (2) is connected with a fixing part (3), and a dust collection part (4) is arranged at the bottom of the dust cover (1).

2. The chalk writing dust-proof device according to claim 1, characterized in that: the dust collecting component (4) comprises a dust collecting opening (41), and the dust collecting opening (41) is connected with the dust cover (1).

3. The chalk writing dust-proof device according to claim 2, characterized in that: the bottom of the dust collecting component (4) is provided with a dust collecting box (42).

4. The chalk writing dust-proof device according to claim 3, characterized in that: the dust collecting component (4) is provided with a suction pump (43).

5. The chalk writing dust-proof device according to claim 4, characterized in that: a filter component (44) is arranged in the dust collecting component (4), and the air suction pump (43) is isolated from the dust collecting component (4) by the filter component (44).

6. The chalk writing dust-proof device according to claim 5, characterized in that: an atomization device (6) is arranged in the dust collecting component (4).

7. The chalk writing dust-proof device according to any one of claims 1 to 6, wherein: and an atomization device (6) is arranged in the dust cover (1).

8. The chalk writing dust-proof device according to any one of claims 1 to 6, wherein: the dust cover (1) is made of transparent materials.

9. The chalk writing dust-proof device according to any one of claims 1 to 6, wherein: the end part of the dust cover (1) is provided with a rolling bead (5).

10. The chalk writing dust-proof device according to any one of claims 1 to 6, wherein: the dust cover (1) is internally provided with an eraser (7).

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