Blackboard purification dust collector

Abstract

The invention discloses a blackboard purification dust collector which comprises a blackboard purification dust collector main machine, a telescopic pipe, an anti-static brush head, a brush head wall hanging clamp, a left filtering cylinder, a right filtering cylinder, an inverted-U-shaped corrugated air guide pipe with a pipeline flow guide plate, an induced draft fan, a partition plate and the like. The main machine is divided into an upper box body and a lower box body through a partition plate which is provided with an air outlet. The left filtering cylinder and the right filtering cylinder are arranged on the lower box body and are communicated through an inverted U-shaped corrugated gas guide pipe; one end of the telescopic pipe is connected with the host air inlet, and the other end is connected with the anti-static special brush head; an air suction opening of the induced draft fan is communicated with an air inlet of the left filtering cylinder; a filtering bag is arranged at the air inlet of the left filtering cylinder; the principle and the technical scheme of vacuum mute dust collection, polymerization fine powder clustering and centrifugal water film purification are adopted in the main machine, and the problems that an electric black eraser in the field of current environment-friendly teaching equipment is not clean in wiping and prone to damage after fine dust collection are solved. The dust-free eye-protecting blackboard has the advantages of being economical, low-carbon, environment-friendly, dust-free, healthy and capable of protecting eyes as core equipment of the dust-free eye-protecting blackboard.

Description

Technical Field

[0001] The invention relates to the intersection of education field and environmental protection and health technology, and specifically is a blackboard purification vacuum cleaner which is particularly suitable for being used as the core equipment of dust-free eye-protection blackboard in schools. Background Art

[0002] In the field of teaching equipment, with the rapid advancement of education modernization, although remarkable achievements have been made, a series of new problems have also emerged, and we are in urgent need of seeking solutions. In the traditional teaching method, ordinary chalk is used to write on the blackboard, and then wiped with an ordinary blackboard brush, which not only generates dust but also may cause teachers to suffer from occupational diseases. After the full switch to dust-free teaching aids, the myopia rate of young students has risen sharply. The main reason is generally recognized to be due to excessive reliance on electronic teaching products and other blackboard writing tools that are dust-free but not eye-protecting.

[0003] Existing technical improvements mainly focus on the design of dust-free blackboards, striving to solve the problem of teaching convenience and reducing the problem of dust flying when wiping. However, there is a lack of sufficient understanding and effective solutions for the prevention and control of myopia among adolescents. Therefore, the problem of damage to the eyes caused by teaching equipment has not been prevented in the past, and there is a lack of effective solutions, resulting in a continued high rate of myopia among students.

[0004] As we all know, when using a traditional blackboard with ordinary chalk, dust will fly when wiping, posing a threat to the health of teachers. Although the use of wet cloth or water wiper technology, such as the cleaning device for blackboard eraser (CN 2021111643404), can effectively prevent dust from flying, it also has two major disadvantages: First, when there is insufficient moisture, the blackboard will become gray after drying, affecting the contrast effect of writing and easily causing myopia in students; second, the moisture and humidity of the water wiper will cause damage to adjacent electrical equipment, such as blue screen, freeze, short circuit, rust, etc., which will accelerate the shortening of its service life, so it is not suitable for large-scale promotion and long-term use.

[0005] Compared with ordinary blackboard brushes, the existing electric blackboard eraser technology has improved the brushing and suction effect, but still lacks an electric blackboard eraser that can not only brush cleanly, but also suck thoroughly, and can efficiently purify fine dust (such as PM2.5). Current electric blackboard erasers are mainly divided into two categories: handheld and wall-mounted. The handheld electric blackboard eraser is small in size, but the suction is limited, the brushing and suction are not clean, and secondary pollution is easily generated, and the durability is poor. Even if the suction is increased to more than 13KPa, the noise will exceed 75 decibels, far exceeding the 60 decibel limit specified by school equipment. The wall-mounted electric blackboard eraser with a brush head connected by a telescopic tube, such as a centrifugal powder collection double barrel dust removal board eraser (CN200820086203.7), although the brushing and suction effect is better than the handheld type, there are still problems such as unclean wiping, loud noise, and easy damage.

[0006] Although these technologies can remove dust on the blackboard to a certain extent, the technologies used in filtration cannot achieve efficient purification and harmless treatment of fine dust (such as PM2.5), nor can they solve the problem that vacuum cleaners are easily damaged when sucking fine dust. Although the existing blackboard purification vacuum cleaner (CN201010576659.3) technology basically meets the requirement of brushing and sucking clean, it also fails to effectively solve the common problems of being easily damaged when sucking fine dust PM2.5 and not wiping clean in the field of electric blackboard eraser technology.

[0007] These problems not only affect the teaching environment and teaching quality, but also bring many challenges to the fields of environmental protection teaching aids and prevention and control of adolescent myopia. In order to meet the higher requirements of dust-free and eye-protecting in real schools, as a supporting device for a writing board with the function of preventing and controlling myopia, the existing blackboard purification vacuum cleaner must be innovated and upgraded in these two parts. Summary of the Invention

[0008] The purpose of the present invention is to provide a blackboard purification vacuum cleaner to solve the problems of not wiping clean and being easily damaged when sucking fine dust PM2.5 in the electric blackboard eraser technology in the current field of environmental protection teaching equipment, and having the characteristics of economy, low carbon, environmental protection, dust-free and healthy eye protection.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A blackboard purification vacuum cleaner, comprising a blackboard purification vacuum cleaner main body;

[0011] The interior of the blackboard purification vacuum cleaner main body is divided into an upper box body and a lower box body by a partition board;

[0012] A main machine switch and a knob speed regulation switch are arranged on the outside of the upper box body, and an induced draft fan and an inverted U-shaped corrugated air duct are arranged inside it. One end of the inverted U-shaped corrugated air duct is set as an air outlet, and the other end is set as an air inlet;

[0013] A double-cylinder filter liquid tank is arranged inside the lower box body, which is composed of a left filter cylinder and a right filter cylinder. An L-shaped right straight pipe is arranged inside the right filter cylinder. A right elbow is arranged at the bottom end of the right straight pipe, and a main machine air inlet arranged at its top end passes through the upper box body and is connected to an anti-static brush head through a telescopic pipe. An L-shaped left straight pipe is arranged inside the left filter cylinder. A left elbow is arranged at the bottom end of the left straight pipe, and its top end is communicated with the air outlet of the inverted U-shaped corrugated air duct. The air inlet of the inverted U-shaped corrugated air duct is located at the inner top of the right filter cylinder, and a pipeline flow guide plate is arranged at its air inlet;

[0014] The anti-static brush head is a special anti-static brush head that uses animal hair that does not generate static electricity as the peripheral brush and plant fiber as the brush core, and is equipped with a brush handle; it adopts a parabolic design, its brush shell is tightly fastened to the brush board, the periphery of the brush board is provided with nylon hair or boar bristles, and there is a flannel brush core in the middle, which is made of cotton and sponge; the brush board is provided with peripheral dust suction holes and a central dust suction hole; the brush core is replaceable; there is a brush head wall-mounted card and a micro switch for hanging the anti-static brush head.

[0015] A main machine exhaust port is provided at the middle position of the partition board.

[0016] Further, the thickness of the blackboard purification vacuum cleaner main machine does not exceed 16 cm, a liquid level observation window and a water level warning line are provided at the lower part of the front side of the outside thereof, and a wall-mounted box body and a power socket are provided in a supporting manner.

[0017] Further, an exhaust window is provided on the induced draft fan, and its air suction port is located at the inner top of the left filter cylinder and is provided with a dust filter bag.

[0018] Further, both the left filter cylinder and the right filter cylinder are in a transparent cylindrical structure, are connected in series through the inverted U-shaped corrugated air duct, are installed below the silent vacuum dust suction system, the right filter cylinder is filled with a fixed amount of tap water, and the left filter cylinder is filled with a filtered liquid mixed with a disinfectant.

[0019] Further, the moving radius of the telescopic pipe is 4.5 m, and its telescopic ratio is 1:4.

[0020] The blackboard purification vacuum cleaner of the present invention has the following beneficial effects:

[0021] The blackboard purification vacuum cleaner of the present invention combines multiple advantages such as economy, low carbon, environmental protection, dust-free, health and eye protection, and the effects are visible.

[0022] In terms of economy and low carbon, the equipment has an economical cost, is easy to maintain, and has strong durability, significantly reducing environmental pollution and resource waste; experimental data shows that when using an ordinary blackboard brush to clean 10,000 large blackboards in the traditional way, it is necessary to consume up to 30,000 brushes, and the cumulative cost reaches as much as 30,000 yuan; while the blackboard purification vacuum cleaner of the present invention can achieve the same quantity and cleaning effect with only one device, and its total price is less than one-tenth of the total price of 30,000 ordinary blackboard brushes, and the economic benefits are remarkable.

[0023] In terms of environmental protection and dust-free, the equipment has strong suction, proper noise control, excellent cleaning effect, no dust dispersion during the brushing process, effectively preventing adjacent electrical appliances from getting damp, and is an ideal choice to replace the traditional blackboard brush, and it matches well with the (intelligent) blackboard; as is well known, a dust-free environment can effectively prevent teachers' occupational diseases and protect the health of teachers and students.

[0024] In terms of healthy eye protection, the performance of this device is particularly outstanding; firstly, it can completely remove the chalk writing on the blackboard, and write as you erase, with an excellent contrast effect on the blackboard. Compared with other teaching aids, it can reduce eye fatigue and help prevent myopia; secondly, by using this device, teachers and students can easily and safely transition to an environmentally friendly and healthy chalk blackboard teaching environment, without over-reliance on electronic products, reducing the risk of eye injury, and not being limited by other blackboard writing tools that are dust-free but have poor writing and wiping effects, thereby reducing the probability of eye fatigue caused by poor contrast effects, thereby effectively preventing students from myopia; it is particularly worth mentioning that its hidden eye protection function is more significant; the cleanliness of the blackboard directly affects the contrast effect when writing on the blackboard again, which in turn affects the students' vision health; the blackboard purification vacuum cleaner of the present invention has been comprehensively upgraded on the original basis, and the host part adopts vacuum silent dust suction, aggregate fine powder agglomeration, and centrifugal water film purification processing technology, and the brush head is improved to a non-static and anti-static design, and the brushing cleanliness and use effect are significantly improved.

[0025] To sum up, the blackboard purification vacuum cleaner of the present invention not only inherits the advantages of the prior art, but also makes major improvements on its shortcomings, and the cleaning degree is more significant and stable. It has the advantages of easy use, strong suction, low noise, environmental protection and energy saving, and long service life, making it possible to be widely used in various schools. As the core equipment of the dust-free and eye-protecting blackboard, it is used in conjunction with the blackboard, and has a significant effect of saving costs and being efficient in preventing teachers' occupational diseases and myopia prevention and control among children and adolescents. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a front view of a blackboard purification vacuum cleaner of the present invention;

[0027] Figure 2 This is a main axis sectional view of a blackboard purification vacuum cleaner of the present invention;

[0028] Figure 3 A schematic diagram of an air path of a U-shaped duct with a duct guide plate involved in a blackboard purification vacuum cleaner of the present invention;

[0029] Figure 4 It is a schematic diagram of the working principle of a U-shaped conduit with a duct guide plate involved in a blackboard purification vacuum cleaner of the present invention;

[0030] Figure 5 This is a left view of a special anti-static brush head involved in a blackboard purification vacuum cleaner of the present invention;

[0031] Figure 6 The present invention is a front view of a brush head wall-mounted card and a micro switch involved in a blackboard purification vacuum cleaner.

[0032] in,

[0033] 1. Silent vacuum cleaning system; 2. Wall-mounted box; 3. Double-cylinder filter liquid tank; 4. Blackboard purification vacuum cleaner host; 5. Telescopic tube; 6. Anti-static brush head; 7. Brush head wall-mounted card; 8. Host switch; 9. Power socket; 10. Liquid level observation window; 11. Lower box; 12. Inverted U-shaped corrugated air duct; 13. Right filter cylinder; 14. Left filter cylinder; 15. Left straight pipe; 16. Right straight pipe; 17. Right elbow; 18. Left elbow; 19. Dust filter bag; 20. Induced draft fan; 21. Exhaust window; 22. Host exhaust port; 23. Host air inlet; 24. Pipeline deflector; 25. Fine dust and water droplets; 26. Coarser dust and dust-containing water droplets; 27. Coarser water-containing dust and dust-containing water droplets; 28. Coarse dust and dust-containing water droplets; 29. Inverted U-shaped corrugated air duct outlet; 30. Inverted U-shaped corrugated air duct inlet; 31. Upper box; 32. Tap water; 33. Rotary speed control switch; 34. Peripheral brush; 35. Micro switch; 36. Brush handle; 37. Rotating air flow. Detailed implementation manners

[0034] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. Generally, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0035] In the description of the embodiments of the present invention, "a plurality of" represents at least two.

[0036] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and limited, if the terms "set", "installed", "connected", "connected" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Embodiment:

[0038] This embodiment provides a blackboard purification vacuum cleaner, including a blackboard purification vacuum cleaner host 4;

[0039] The interior of the blackboard purification vacuum cleaner host 4 is divided into an upper box 31 and a lower box 11 by a partition board;

[0040] On the outside of the upper box body 31, there are a main machine switch 8 and a rotary speed control switch 33. Inside it, there are an induced draft fan 20 and an inverted U-shaped corrugated air duct 12. One end of the inverted U-shaped corrugated air duct 12 is set as an air outlet 29, and the other end is set as an air inlet 30;

[0041] Inside the lower box body 11, there is a double-cylinder filter liquid tank 3, which is composed of a right filter cylinder 13 and a left filter cylinder 14. Inside the right filter cylinder 13, there is an L-shaped right straight pipe 16. At the bottom end of the right straight pipe 16, there is a right elbow 17, and the main machine air inlet 23 set at its top end passes through the upper box body 31 and is connected to an anti-static brush head 6 through a telescopic pipe 5. Inside the left filter cylinder 14, there is an L-shaped left straight pipe 15. At the bottom end of the left straight pipe 15, there is a left elbow 18, and its top end is communicated with the air outlet 29 of the inverted U-shaped corrugated air duct 12. The air inlet 30 of the inverted U-shaped corrugated air duct 12 is located at the inner top of the right filter cylinder 13, and a pipeline flow guide plate 24 is arranged at its air inlet 30;

[0042] The anti-static brush head 6 is an anti-static brush head that uses animal hair that does not generate static electricity as the peripheral brush 34 and plant fiber as the brush core, and is equipped with a brush handle 36; it adopts a parabolic design, its brush shell is tightly fastened to the brush plate, nylon hair or boar bristles are arranged around the brush plate, and there is a flannelette brush core in the middle, which is made of cotton and sponge; there are peripheral dust suction holes and central dust suction holes on the brush plate; the brush core is replaceable; there are a brush head wall hanging card 7 and a micro switch 35 for hanging the anti-static brush head 6;

[0043] At the middle position of the partition, there is a main machine air exhaust port 22.

[0044] Further, the thickness of the blackboard purification vacuum cleaner main machine 4 does not exceed 16 cm. On the lower part of its outer front side, there is a liquid level observation window 10 and a water level warning line, and a wall-mounted box body 2 and a power socket 9 are provided as supporting facilities.

[0045] Further, there is an exhaust window 21 on the induced draft fan 20, and its air suction port is located at the inner top of the left filter cylinder 14 and is provided with a dust filter bag 19.

[0046] Further, the moving radius of the telescopic pipe 5 is 4.5 m, and its telescopic ratio is 1:4.

[0047] Specifically:

[0048] The blackboard purification vacuum cleaner main machine 4: adopts the principles of vacuum silent dust suction, aggregating fine powder into clusters, and centrifugal water film purification. Effect: It solves the problems of the current electric blackboard eraser in the field of environmental protection teaching equipment, such as being not easy to damage when sucking fine dust pm2.5, having no secondary pollution, and greatly extending the service life, thereby improving the cost performance and reducing the cost.

[0049] Anti-static brush head 6: It uses animal hair that does not generate static electricity as the brush and plant fiber as the brush core. Effect: It is not easy to generate static electricity when wiping the blackboard, the cleanliness of the board surface is high, it can be wiped cleaner, the contrast effect of the subsequent blackboard writing is good, and the eyes are not easily fatigued, which is beneficial to myopia prevention and control.

[0050] Wall-mounted box 2: Facilitates the installation of the host and ensures safety in use, saving space; the wall-mounted type uses screws + wall-mounted parts for invisible installation, which is convenient and fast.

[0051] Silent vacuum dust collection system 1: Effectively reduces noise. When the suction force ≥ 13 KPa, the noise ≤ 59 decibels, and it is suitable for places such as classrooms that require a quiet environment.

[0052] Double-cylinder filter liquid tank 3: It is connected in series through an inverted U-shaped corrugated air duct 12 with a pipeline flow guide plate 24 to form three functions of vacuum silent dust collection, polymerizing fine powder into clusters, and centrifugal water film purification.

[0053] Inverted U-shaped corrugated air duct 12 with a pipeline flow guide plate 24: Used to connect two filter liquid cylinders to ensure that the waste gas can be smoothly introduced into the filter liquid for harmless treatment; at the same time, a pipeline flow guide plate 24 is installed at its air inlet 30, so that the air passing through the U-shaped pipe advances at high speed in a rotating manner, and the dust polymerizes fine powder into clusters with the participation of an appropriate amount of water droplets and becomes coarse dust.

[0054] Main engine air inlet 23 and main engine air outlet 22: They are respectively used to inhale blackboard dust and discharge the air after harmless treatment.

[0055] Knob speed control switch 33: Used to adjust the water film area, wind speed, air volume, and the size of the machine sound.

[0056] Liquid level observation window 10 and water level warning line: Facilitate observing the liquid level height in the filter liquid tank to ensure the normal operation of the equipment.

[0057] Flexible pipe 5: The moving radius is 4.0 m; it can withstand 100,000 fatigue tests, and the expansion ratio is 1:4.

[0058] Anti-static brush head 6: Adopts a parabolic design, which conforms to the principle of human body mechanics and is comfortable to hold; the brush shell is tightly fastened to the brush board; nylon hair or boar bristles are provided around the brush board, and there is a flannelette brush core in the middle, which is made of cotton and sponge; peripheral dust suction holes and central dust suction holes are provided on the brush board; the brush core is replaceable; it combines rigidity and flexibility and can clean the board with one brush.

[0059] Brush head wall-mounted clip 7 and micro switch 35: It can be opened and closed 100,000 times without failure.

[0060] In summary, a blackboard purification vacuum cleaner of the present invention solves the key technical problems faced in the current industrial manufacturing field, namely, the inability to achieve both purification of fine dust Pm2.5 and vacuum suction at the same time, solves the problem that the electric blackboard brush in the current environmental protection teaching equipment field is prone to damage when sucking fine dust Pm2.5, and solves the problem that the existing electric blackboard eraser cannot clean the blackboard thoroughly.

[0061] Embodiment 1: The following are specific implementation examples of the present invention. Now, in combination with the attached drawings, its specific applications and effects will be described. As Figure 1 , Figure 2 , Figure 3 , Figure 4 shown:

[0062] When brushing the blackboard, when picking up the anti-static brush head 6 to brush the blackboard, the power supply of the main machine blackboard purification vacuum cleaner 4 is automatically turned on. Under the action of the induced draft fan 20, after the dust and air brushed off are mixed, they enter the right filter cylinder 13 through the air suction port of the anti-static brush head 6, the telescopic pipe 5, the right straight pipe 16, and the right elbow 17, and push the tap water 32 to make a high-speed centrifugal motion, allowing the air and water to fully contact, making intimate contact, strong collision, and repeated friction. At this time, about 90% of the dust and peculiar smell are instantly captured by the water film. This phenomenon is usually called physical adsorption, which is specifically manifested as intermolecular forces (hydrogen bonds, van der Waals forces, etc.). In the field of environmental science or materials, it may also be directly described as the wetting adsorption or surface adsorption of water on particulate matter; then, under the action of the pipeline guide plate 24, the air enters from the air inlet 30 of the pipeline guide plate 24 of the right filter cylinder, and along the inverted U-shaped corrugated air duct 12, in the shape of a tornado, and is sent into the left filter cylinder 14 again. In the inverted U-shaped corrugated air duct 12, the air containing a small amount of dust further collides and adheres with the water droplets and moves forward in a centrifugal motion; under the action of the molecular bond force, the fine dust Pm2.5 (fine dust and water droplets 25) is extremely easy to agglomerate (coarser dust and dust-containing water droplets 26, dust-containing coarser dust 27), and more than 95% becomes agglomerated coarse dust far larger than Pm2.5 (coarse dust and dust-containing water droplets 28), which is sent into the left filter cylinder 14 for centrifugal dehydration and dust removal treatment; the purified air enters the fine filter system filter dust bag 19 again, and after rotary filtration, it is discharged out of the box through the main machine air outlet 22, so as to achieve the effect of purifying the air, and the dust suction effect can reach 99.6%; when there is more dust suction, just replace the tap water 32, without secondary pollution, and it can not only brush and suck the dust on the blackboard, but also brush and suck the dust on the blackboard eraser.

[0063] The present invention solves the problems that the electric blackboard eraser in the current environmental protection teaching equipment field cannot clean the blackboard thoroughly and is prone to damage when sucking fine dust Pm2.5.

[0064] Embodiment 2:

[0065] Design of the filter liquid tank:

[0066] Both filter cylinders are transparent cylinders, connected in series through an inverted U-shaped corrugated air duct 12, installed below the dust suction system. The right filter cylinder 13 is filled with a certain amount of tap water, and the left filter cylinder 14 is filled with a filtered liquid mixed with disinfectant.

[0067] Design of the pipeline flow guide plate:

[0068] A pipeline flow guide plate 24 is installed at the air inlet 30 of its U-shaped pipe, making the air passing through the U-shaped pipe rotate and move forward at high speed. The dust aggregates into fine powder clusters with the participation of an appropriate amount of water droplets, facilitating the purification of the dust in the second filter cylinder by centrifugal force and the HERA filter screen.

[0069] Design of the anti-static brush head 6 structure:

[0070] It adopts a parabolic design, conforming to the principles of ergonomics and being comfortable to hold; the brush shell is tightly fastened to the brush board; nylon bristles or boar bristles are provided around the brush board, and there is a flannel brush core in the middle, made of cotton and sponge; peripheral dust suction holes and a central dust suction hole are provided on the brush board; the brush core is replaceable; it combines rigidity and flexibility and can clean with one brush; it is required to be able to brush and suck the dust on the blackboard as well as the dust on the blackboard eraser.

[0071] Working principle:

[0072] Vacuum silent dust suction, aggregating fine powder into clusters, and centrifugal water film purification. Under the action of the vacuum dust suction system, the waste gas enters the tap water in the right filter cylinder through the suction port, fully contacts with the large-area water film, and undergoes harmless treatment. Then it is guided along the inverted U-shaped corrugated air duct with a pipeline flow guide plate and enters the left filter cylinder for further purification treatment such as centrifugal dehydration and dust removal.

[0073] Selection and precautions of disinfectant:

[0074] The disinfectant uses drugs that have a strong killing effect on influenza virus, influenza A virus, and novel coronavirus, such as "84" disinfectant, hydrogen peroxide aqueous solution, etc. The disinfectant can usually be not used and is adopted once facing the situation of a sudden public health event. When using it, only need to add it to the tap water in the right filter cylinder according to a certain proportion. Do not add water to the left filter cylinder. Once the accumulated water in the left filter cylinder exceeds two centimeters, it needs to be emptied in time to prevent water from entering the exhaust fan.

[0075] Operation and maintenance:

[0076] By observing the liquid level observation window and the water level warning line, ensure that the liquid level in the filter liquid tank is appropriate; when the liquid level is lower than the water level warning line, water or disinfectant needs to be added in time; if there is a lot of dust suction, the water can be changed or the dust in the powder collection cylinder can be removed.

[0077] In summary, the key technologies and innovation points of the present invention are as follows:

[0078] I. Key technologies

[0079] Pipe flow guide plate technology

[0080] Principle: It can change the direct-flow gas in the pipe into a rotating air flow to move forward, thereby aggregating fine powder into clusters, improving performance and reducing costs;

[0081] Function and its specific application in the invention: It can quickly eliminate fine dust Pm2.5.

[0082] Aggregation of fine powder into cluster technology

[0083] Principle: Through the pipe flow guide plate, the direct-flow gas in the pipe is changed into a rotating air flow to move forward; under the action of the centrifugal force formed by the rotating air flow, the contact surface between water droplets and air is almost increased to more than ten times compared with the direct-flow gas, and the collision force is almost increased by more than ten times compared with the direct air flow. Coupled with the rapid capture force and adhesion of the water film itself to the dust, the fine dust is easily and quickly aggregated into clusters and becomes coarse dust;

[0084] Its technical breakthrough and the effects brought: Improve performance.

[0085] Optimization combination technology:

[0086] If the pipe flow guide plate technology is adopted, using tap water at about three yuan per ton and implementing the recycling of tap water to replace part of the filter screen, achieving the same effect of purifying fine dust Pm2.5 and purifying the same amount of air, the comprehensive cost of the present invention is only about 5% of that of the filter screen, the purification speed is increased by about 10 times, the wind resistance is small, and the volume is small, greatly reducing the cost and improving the efficiency.

[0087] II. Innovation points

[0088] 1. Pipe flow guide plate:

[0089] Adopting the pipe flow guide plate technology, changing the direct-flow gas in the pipe into a rotating air flow to move forward, thereby aggregating fine powder into clusters, and can quickly eliminate fine dust Pm2.5. Beneficial effects: Solve the problem that it is difficult to purify fine dust Pm2.5, which is recognized in the current air purification industry.

[0090] 2. Anti-static brush head: Using animal hair that does not generate static electricity as the brush and plant fiber as the brush core. When wiping the blackboard, it is not easy to generate static electricity, the cleanliness of the blackboard surface is high, it can be wiped cleaner, the contrast effect of the next blackboard writing is good, and the eyes are not easy to get tired. Beneficial effects: Solve the common problem that it is difficult to wipe the blackboard clean in the current electric blackboard eraser industry.

[0091] The present invention inherits the advantages of the existing technology blackboard purification vacuum cleaner and makes up for the original deficiencies. Without the existing technology blackboard purification vacuum cleaner as the basis, it is impossible to upgrade and improve, impossible to install the flow guide plate, and impossible to upgrade and transform the brush head. If not upgraded and transformed, only with the existing technology, it is difficult to meet the requirements of being wiped clean, purified clean, and not easy to break.

[0092] The above describes the present invention and its embodiments. Such description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In general, if those of ordinary skill in the art are inspired by it and, without departing from the spirit of the present invention, design similar structural forms and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. A blackboard cleaning vacuum cleaner, characterized in that: Including blackboard purification vacuum cleaner host; The interior of the blackboard purification vacuum cleaner host is divided into an upper box body and a lower box body by a partition; The upper box body is provided with a main engine switch and a knob speed regulating switch on the outside, and an induced draft fan and an inverted U-shaped corrugated air duct on the inside, wherein one end of the inverted U-shaped corrugated air duct is provided as an air outlet, and the other end is provided as an air inlet; A double-cylinder filtered liquid box is arranged inside the lower box body, which is composed of a left filter cylinder and a right filter cylinder. An L-shaped right straight pipe is arranged in the right filter cylinder, and a right elbow is arranged at the bottom end of the right straight pipe. The main engine air inlet arranged at the top thereof passes through the upper box body and is connected to the anti-static brush head through a telescopic tube. An L-shaped left straight pipe is arranged in the left filter cylinder, and a left elbow is arranged at the bottom end of the left straight pipe. The top end thereof is connected with the air outlet of the inverted U-shaped corrugated air guide pipe. The air inlet of the inverted U-shaped corrugated air guide pipe is located at the inner top of the right filter cylinder, and a pipeline guide plate is arranged at the air inlet thereof. The anti-static brush head is a special anti-static brush head that uses animal hair that does not generate static electricity as the peripheral brush and plant fiber as the brush core, and is equipped with a brush handle; a parabolic design is adopted, and its brush shell is tightly buckled with the brush plate, and nylon hair or pig bristle is arranged around the brush plate, and there is a flannel brush core in the middle, which is made of cotton and sponge; the brush plate is provided with peripheral dust suction holes and central dust suction holes; the brush core is replaceable; a brush head wall hanging card and a micro switch for hanging the anti-static brush head are provided; A main engine exhaust port is arranged at the middle position of the partition.

2. A blackboard cleaning vacuum cleaner according to claim 1, characterized in that: The thickness of the blackboard purification vacuum cleaner host does not exceed 16 cm, a liquid level observation window and a water level warning line are arranged at the lower part of the outer front side thereof, and a wall-mounted box and a power socket are arranged in a matching manner.

3. A blackboard cleaning vacuum cleaner according to claim 1, characterized in that: The induced draft fan is provided with an exhaust window, and the air suction port thereof is located at the top of the left filter cylinder and is provided with a dust filter bag.

4. A blackboard cleaning vacuum cleaner according to claim 1, characterized in that: The left filter cylinder and the right filter cylinder are both transparent cylindrical structures, connected in series through the inverted U-shaped corrugated air duct, and installed below the silent vacuum cleaning system. The right filter cylinder is filled with a fixed amount of tap water, and the left filter cylinder is filled with filtered liquid mixed with disinfectant.

5. A blackboard cleaning vacuum cleaner according to claim 1, characterized in that: The movable radius of the telescopic tube is 4.5 m, and its telescopic ratio is 1:4.

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