A simple dust collector

Abstract

This invention relates to the field of vacuum cleaner technology, specifically to a simple dust collector, comprising a vacuum cleaner body and a suction tube. The vacuum cleaner body includes a collection shell and a main body shell connected in sequence. One end of the suction tube has a brush suction tube communicating with it, and the other end of the suction tube communicates with the collection shell. The collection shell and the main body shell are interconnected. The main body shell houses a cyclone mechanism, a battery pack, and a PCB control board. The cyclone mechanism is located inside the main body shell at the end where the main body shell connects to the collection shell. The PCB control board is located on one side of the battery pack, and both the cyclone mechanism and the PCB control board are electrically connected to the battery pack. The collection shell houses a filter mechanism. This simple dust collector is a small dust collector suitable for both home and vehicle use, meeting people's needs for vacuuming narrow crevices in vehicles, desktops, keyboards, etc. Its compact design makes it easy to carry and store; users can hold it directly on the outside of the main body without needing a separate handle.

Description

Technical Field

[0001] This invention relates to the field of vacuum cleaner technology, and more specifically to a simple dust collector. Background Technology

[0002] With social development and the advancement of science and technology, people's material and cultural living standards have greatly improved, and automobiles, as a common means of transportation, have become increasingly prevalent in households. Cars have gradually become a necessity of modern life, and more and more people own their own private vehicles. However, while cars bring convenience, they also present cleaning challenges. Many debris and other impurities become difficult to clean once they accumulate inside the car. Furthermore, when cleaning the interior, people often find that dust in hard-to-reach corners is difficult to clean, even with a household vacuum cleaner.

[0003] However, existing car vacuum cleaners are relatively large, making them inconvenient for users and taking up a lot of space when stored. Some car vacuum cleaners also require a cord, which not only limits their use but also affects their efficiency, causing significant inconvenience to users. Therefore, there is a need to develop a portable and simple vacuum cleaner that can be used in both homes and cars. Summary of the Invention

[0004] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this invention is to provide a simple dust collector. This simple dust collector is a small dust collector that can be used in both homes and vehicles, meeting people's needs for vacuuming small gaps in the car, desktops and keyboards, etc. Its compact shape makes it easy to carry and store. Users can hold it directly on the outside of its main body without the need for a separate handle.

[0005] The objective of this invention is achieved through the following technical solution: A simple dust collector includes a vacuum cleaner body and a suction pipe installed at the front end of the vacuum cleaner body. The vacuum cleaner body includes a shell, which includes a collection shell and a main body shell connected in sequence. One end of the suction pipe is provided with a brush suction pipe that communicates with the suction pipe, and the other end of the suction pipe communicates with the collection shell. The collection shell and the main body shell are interconnected.

[0006] The main housing contains a cyclone mechanism, a battery pack, and a PCB control board. The battery pack is secured within the main housing. The cyclone mechanism is located within the main housing and at the end where the main housing connects to the collection housing. The PCB control board is located on one side of the battery pack. The cyclone mechanism and the PCB control board are electrically connected to the battery pack. The cyclone mechanism includes an impeller, a motor, and a fixed housing. The motor is fixed within the fixed housing, and the impeller is located at the motor's power output end. The motor drives the impeller to rotate within the fixed housing. The collection housing contains a filtration mechanism.

[0007] The simple dust collector of this invention is a small dust collector that can be used in both homes and vehicles. It meets people's needs for vacuuming narrow gaps in the car, desktops and keyboards. Its compact shape makes it easy to carry and store. Users can hold it directly on the outside of the main body without the need for a separate handle. The motor, powered by a battery pack, rotates the impeller, which in turn expels air and creates a semi-vacuum within the housing. Through the seal of the fixed housing, suction acts on the filtration mechanism, further creating a semi-vacuum within the collection housing. This allows dust and debris collected through the suction pipe to be filtered and collected in the collection housing. The filtered gas is then discharged through the rotating impeller into the fixed housing and finally exits the main body. The brush suction pipe design allows for better contact between the suction pipe and the work surface in various environments, enabling flexible use of the brush head or suction pipe for cleaning, further improving efficiency and energy utilization. The three-section structure of the dust collector—brush suction pipe, collection housing, and main body—facilitates assembly, disassembly, maintenance, and cleaning of the collection housing. Furthermore, it eliminates the need for wiring, making it more convenient and practical.

[0008] Preferably, the impeller includes an impeller base and multiple guide vanes and multiple diverter vanes disposed on the impeller base. The diverter vanes are located between two adjacent guide vanes and extend to the edge of the impeller base. The fixed shell includes an upper shell, a lower shell, and a damping ring. The upper shell and the lower shell are interlocked. The damping ring is disposed at the interlocking point of the upper shell and the lower shell. The motor is fixed to the lower shell. The upper shell has an air inlet that penetrates the upper shell. The fixed ring is sleeved on the outside of the upper shell. The shell wall of the lower shell has several vent holes. The main shell includes a first shell and a second shell. The side walls of the first shell and the second shell have vent meshes corresponding to the vent holes. A mesh cover is provided at the end of the main shell near the collection shell.

[0009] In this invention, the impeller, by setting diverting vanes on the impeller base, can divert the intake gas, reducing the pressure of the intake gas on the two adjacent guide vanes. Without increasing the impeller speed, it can also increase the gas flow rate and velocity, reducing the pressure on the guide vanes. The structure of the fixed housing as an upper and lower shell facilitates the fixing of the motor and impeller within the upper and lower shells. A shock-absorbing ring is provided at the engagement point of the upper and lower shells to reduce the transmission of vibrations generated by the motor rotation to the main shell when the fixed housing is secured within the main shell, thus minimizing noise or vibration that could affect the user experience. The gas, filtered by the filtration mechanism, enters the impeller through the air inlet of the upper shell, exits through the impeller, passes through the vents of the lower shell, and finally exits the dust collector through the vent mesh of the main shell, improving the dust collector's dust removal efficiency.

[0010] Preferably, the collecting housing has an inner sleeve extending inward from the port near the suction pipe end, and a silicone baffle is provided at the port of the inner sleeve.

[0011] In this invention, an inwardly extending inner sleeve is provided inside the collection housing, and a silicone baffle is provided at the port of the inner sleeve to facilitate the collection of dust in the collection housing. When the dust collector is inhaling air, the silicone baffle opens due to the semi-negative pressure in the collection housing, allowing gas to enter the collection housing from the port of the inner sleeve. When the machine stops working, the silicone baffle returns to its original position under the action of elasticity, blocking the port of the inner sleeve. This effectively isolates and seals the dust collected in the collection housing, preventing leakage and other problems.

[0012] Preferably, the filtration mechanism includes an upper cover plate, a filter element, and a fixing ring. One end of the filter element is sleeved on one side of the fixing ring, the upper cover plate is fixed to the other end of the filter element, and the other side of the fixing ring is fixed to the port of the main body shell. The filter element is composed of a polyvinyl alcohol layer and a filter paper layer adhered to the surface of the polyvinyl alcohol layer.

[0013] In this invention, the filter element is placed between the upper cover plate and the fixing ring. During filtration, the gas passes through the filter element, filtering dust onto the outside of the filter element and collecting it in the collection housing. The filtered gas then passes through the filter element and enters the cyclone mechanism through the air inlet of the upper housing. The cyclone mechanism drives the formation of purified gas to continuously enter the dust collector, enabling continuous operation. Traditional filter elements are simply made of conventional filter paper and mainly rely on mechanical blocking effects such as Brownian diffusion, interception, inertial impaction, and gravity settling to filter airborne particles. Therefore, the filtration effect on particles smaller than 1μm is not ideal. Most bacteria, viruses, and microorganisms are in the micrometer and submicrometer range. For example, the SARS coronavirus is only about 100nm, which cannot be blocked. Furthermore, conventional filter paper can also have dust adhering to it and forming a film that blocks the air pores of the filter paper, thus affecting the filtration effect. Therefore, this invention uses a filter element composed of a polyvinyl alcohol layer and a filter paper layer adhered to the surface of the polyvinyl alcohol layer. The resulting filter element has a filtration efficiency of ≥99.95% for particles with a diameter ≥0.2μm, low resistance, and high dust holding capacity.

[0014] Preferably, the filter paper layer comprises the following raw materials in parts by weight: 10-20 parts modified nanocellulose, 20-40 parts organic fiber, 10-20 parts glass fiber, 3-7 parts adhesive, 0.1-1.0 parts dispersant, 4-12 parts tourmaline, 1-5 parts carbon nanospheres, and 1-3 parts single-walled carbon nanotubes.

[0015] The added carbon nanospheres in this invention not only serve as a carrier for tourmaline but also possess strong adsorption properties, capable of adsorbing fine particles in the air and filtering harmful gases. Tourmaline releases negative ions, which combine with positively charged particles such as bacteria, dust, and smoke in the air, agglomerating them into larger dust particles for filtration. The tourmaline, carbon nanospheres, and single-walled carbon nanotubes work synergistically, significantly improving the filtration efficiency of the filter paper for fine dust. A dispersant is used to effectively disperse the single-walled carbon nanotubes in the dispersant solution, resulting in a single-walled carbon nanotube fraction. The process involves dispersing the liquid and adding an adhesive to improve the surface properties of the filter paper layer during film formation. This also serves as a carrier for the single-walled carbon nanotube dispersion, allowing the modified nanocellulose, organic fibers, and glass fibers to bond well with the polyvinyl alcohol layer surface. Furthermore, the mixed formulation of modified nanocellulose, organic fibers, and glass fibers ensures high porosity and sufficiently small pore size in the filter paper layer. This small pore size effectively intercepts dust, resulting in a filter core with low resistance, high efficiency, and high dust holding capacity. Compared to existing technologies, this process is simpler and less expensive.

[0016] Preferably, the modified nanocellulose is prepared by the following steps:

[0017] S1. Soak the nanocellulose in a 2-6% NaOH solution for 20-40 minutes, wash, centrifuge, and dry to obtain material A for later use; the nanocellulose is nano bamboo fiber.

[0018] S2. Weigh 5-10 parts of material A and 0.5-1 parts of stearic acid and dissolve them in 20-30 ml of ethanol to obtain a dispersion. Heat the dispersion at 30-40℃ for 20-40 min and dry it to obtain material B for later use.

[0019] S3. Add 2-4 ml of methyltrimethoxysilane and 3-7 parts of dodecyl primary amine to material B and stir evenly. Vacuum the mixture, place it in an oven and heat it to 40-60℃ for 40-80 minutes. Then filter, wash and dry to obtain modified nanocellulose.

[0020] The modified nanocellulose in this invention is prepared by the above method. The modified nanocellulose prepared by this method exhibits excellent hydrophobic properties, and its addition to the raw materials of filter paper imparts excellent hydrophobicity to the resulting filter paper. In step S1, soaking in NaOH causes the nanocellulose to swell, removing some soluble cellulose and hemicellulose, resulting in a more porous nanofiber structure. The soaked nanofibers are beneficial for preparing nanocellulose with high carboxyl content. The carboxyl groups of stearic acid undergo a dehydration reaction with the hydroxyl groups of nanocellulose to generate new substances that adhere to the surface of the nanocellulose. Furthermore, the modification of the nanocellulose particles using dodecyl primary amine achieves the purpose of hydrophobic modification of the nanocellulose surface. Simultaneously, the above-mentioned special hydrophobic process ensures that the nanocellulose, when combined with organic fibers and glass fibers, forms the expected pore size and porosity, while also removing impurities from the fibers, ensuring fiber content, and guaranteeing the quality of the filter paper.

[0021] Preferably, the organic fiber is at least two of polyester fiber, polypropylene fiber, polylactic acid fiber, and polytetrafluoroethylene fiber.

[0022] The blending of polyester fiber, polypropylene fiber, polylactic acid fiber, and polytetrafluoroethylene fiber used in this invention ensures high porosity and sufficiently small pore size in the filter paper. The sufficiently small pore size effectively intercepts the passage of dust, resulting in a filter element with high filtration efficiency, low resistance, and high tensile strength.

[0023] Preferably, the adhesive is a mixture of polyvinyl alcohol, styrene-butadiene latex, carboxyethyl cellulose and disodium hydrogen phosphate in a weight ratio of 0.8-1.2:0.6-1.0:0.4-0.8:0.3-0.7.

[0024] The adhesive used in this invention has excellent bonding effect. Adding it to the raw material of the filter paper layer facilitates the hot pressing of the filter paper layer and the polyvinyl alcohol layer, thereby improving the bonding between the layers.

[0025] Preferably, the dispersant is a mixture of sodium polyacrylate, sodium dodecyl sulfate and sodium dodecylbenzenesulfonate in a weight ratio of 0.8-1.2:0.6-1.0:0.4-0.8.

[0026] The adhesive used in this invention has excellent dispersant properties, which can effectively disperse single-walled carbon nanotubes in the dispersant solution to obtain a single-walled carbon nanotube dispersion.

[0027] Preferably, the filter paper layer is prepared by the following steps:

[0028] 1) Take organic fibers according to the weight proportions and pulp them to obtain organic fiber pulp for later use;

[0029] 2) Disperse glass fibers according to the weight proportions, and add sulfuric acid solution to adjust the pH to 3-4 to obtain glass fiber slurry for later use;

[0030] 3) Take the modified nanocellulose and dispersant according to the weight parts, add the glass fiber slurry, modified nanocellulose and dispersant to the organic fiber slurry, and stir continuously at a rate of 1000-3000 r / min for 40-80 min to obtain the modified slurry for later use;

[0031] 4) Take tourmaline, carbon nanospheres and single-walled carbon nanotubes according to the weight parts. Melt the tourmaline at a high temperature of 1600-1700℃ to obtain a melt. Then, use a sputtering process to deposit the melt onto the carbon nanospheres and single-walled carbon nanotubes to obtain a composite material for later use.

[0032] 5) Add the adhesive and the composite material obtained in step 4) to the modified slurry obtained in step 3) and mix them evenly to obtain a mixed slurry for later use;

[0033] 6) After diluting the mixed slurry obtained in step 5), form it into a wet paper web, press it, dry it at 85-95℃ to obtain a dried paper web, and then treat the paper web with corona electret for 20-30s to obtain a filter paper layer.

[0034] The filter paper layer of this invention is prepared by the above method, and the filter paper layer prepared by the above method has a good filtering effect on fine dust. Among them, the corona electret treatment of the paper web can make the filter paper layer have a certain plasma, which directly attracts and captures charged particles in the air, or induces neutral particles in the air to generate polarity and then captures them, thereby filtering submicron particles in the air more effectively. The filtration efficiency is significantly improved without increasing air resistance, and the airflow resistance of the filter paper layer is significantly reduced compared with traditional air filter paper, thus saving energy significantly.

[0035] The beneficial effects of the present invention are as follows: The simple dust collector of the present invention is a small dust collector that can be used in both homes and vehicles, which meets people's needs for vacuuming small gaps in the car, desktops and keyboards, etc. Its compact shape makes it easy to carry and store, and users can hold it directly on the outside of its main body without the need for a separate handle. Attached Figure Description

[0036] Figure 1 This is a perspective view of the present invention;

[0037] Figure 2 This is a first exploded view of the present invention;

[0038] Figure 3 This is a second exploded view of the present invention;

[0039] Figure 4 This is a third exploded view of the present invention;

[0040] Figure 5 This is a perspective view of the cyclone mechanism of the present invention;

[0041] Figure 6 This is a schematic diagram of the structure of the collection housing of the present invention;

[0042] Figure 7 This is a partially enlarged schematic diagram of the impeller of the present invention.

[0043] The attached diagram is labeled as follows: 1-Suction pipe, 2-Collection housing, 21-Filter mechanism, 211-Upper cover plate, 212-Filter element, 213-Fixing ring, 22-Inner sleeve, 23-Silicone baffle, 31-Cyclone mechanism, 311-Impeller, 3111-Impeller base, 3112-Guide vane, 3113-Diverter vane, 312-Motor, 313-Upper housing, 3131-Air inlet, 314-Lower housing, 3141-Ventilation hole, 315-Shock absorber ring, 32-Battery pack, 33-PCB control board, 34-Mesh cover, 35-First housing, 36-Second housing, 37-Ventilation mesh, and 4-Brush suction pipe. Detailed Implementation

[0044] To facilitate understanding by those skilled in the art, the following description is provided in conjunction with embodiments and appendices. Figure 1-7 The present invention will be further described below, and the content mentioned in the embodiments is not intended to limit the present invention.

[0045] Example 1

[0046] A simple dust collector includes a vacuum cleaner body and a suction pipe 1 installed at the front end of the vacuum cleaner body. The vacuum cleaner body includes an outer shell, which includes a collection shell 2 and a main body shell connected in sequence. One end of the suction pipe 1 is provided with a brush suction pipe 4 that communicates with the suction pipe 1, and the other end of the suction pipe 1 is connected to the collection shell 2. The collection shell 2 and the main body shell are interconnected.

[0047] The main body housing contains a cyclone mechanism 31, a battery pack 32, and a PCB control board 33. The battery pack 32 is fitted inside the main body housing. The cyclone mechanism 31 is located inside the main body housing and at the end where the main body housing connects to the collection housing 2. The PCB control board 33 is located on one side of the battery pack 32. The cyclone mechanism 31 and the PCB control board 33 are electrically connected to the battery pack 32. The collection housing 2 contains a filter mechanism 21. An inner sleeve 22 extends inward from the port of the collection housing 2 near the suction pipe 1. A silicone baffle 23 is provided at the port of the inner sleeve 22.

[0048] The filtration mechanism 21 includes an upper cover plate 211, a filter element 212, and a fixing ring 213. One end of the filter element 212 is sleeved on one side of the fixing ring 213, the upper cover plate 211 is fixed to the other end of the filter element, and the other side of the fixing ring 213 is fixed to the port of the main body shell. The filter element 212 is composed of a polyvinyl alcohol layer and a filter paper layer adhered to the surface of the polyvinyl alcohol layer.

[0049] The cyclone mechanism 31 includes an impeller 311, a motor 312, and a fixed housing. The motor 312 is fixed inside the fixed housing, and the impeller 311 is located at the power output end of the motor 312. The motor 312 drives the impeller 311 to rotate within the fixed housing. The impeller 311 includes an impeller base 3111 and multiple guide vanes 3112 and multiple diverter vanes 3113 disposed on the impeller base 3111. The diverter vanes 3113 are located between two adjacent guide vanes 3112. The impeller blade 3112 extends to the edge of the impeller base 3111; the fixed shell includes an upper shell 313, a lower shell 314 and a damping ring 315, the upper shell 313 and the lower shell 314 are engaged with each other, the damping ring 315 is disposed at the engagement point of the upper shell 313 and the lower shell 314, the motor 312 is fixed to the lower shell 314, the upper shell 313 is provided with an air inlet 3131 penetrating the upper shell 313, and the fixing ring 213 is sleeved on the outside of the upper shell 313.

[0050] The lower housing 314 has a plurality of ventilation holes 3141 on its shell wall; a mesh cover 34 is provided at one end of the main housing near the collection housing 2; the main housing includes a first housing 35 and a second housing 36, and ventilation mesh 37 is provided on the side wall of the first housing 35 and the side wall of the second housing 36 corresponding to the ventilation holes 3141.

[0051] The filter paper layer comprises the following raw materials in parts by weight: 10 parts modified nanocellulose, 20 parts organic fiber, 10 parts glass fiber, 3 parts adhesive, 0.1 parts dispersant, 4 parts tourmaline, 1 part carbon nanospheres, and 1 part single-walled carbon nanotubes.

[0052] The modified nanocellulose was prepared by the following steps:

[0053] S1. Soak the nanocellulose in a 2% (w / w) NaOH solution for 20 min, wash, centrifuge, and dry to obtain material A, which is then set aside. The nanocellulose is nano-bamboo fiber.

[0054] S2. Weigh 5 parts of material A and 0.5 parts of stearic acid and dissolve them in 20 ml of ethanol to obtain a dispersion system. Heat the dispersion system at 30°C for 20 min and dry it to obtain material B for later use.

[0055] S3. Add 2 ml of methyltrimethoxysilane and 3 parts of dodecyl primary amine to material B, stir evenly, draw a vacuum, put it in an oven and heat to 40°C for 40 min, then filter, wash and dry to obtain modified nanocellulose.

[0056] The organic fiber is a mixture of polyester fiber and polytetrafluoroethylene fiber in a weight ratio of 0.8:0.6.

[0057] The adhesive is a mixture of polyvinyl alcohol, styrene-butadiene latex, carboxyethyl cellulose and disodium hydrogen phosphate in a weight ratio of 0.8:0.6:0.4:0.3; the styrene-butadiene latex is carboxylated styrene-butadiene latex of model TG301 produced by Jingjiang Tonggao Chemical Co., Ltd.

[0058] The dispersant is a mixture of sodium polyacrylate, sodium dodecyl sulfate and sodium dodecylbenzenesulfonate in a weight ratio of 0.8:0.6:0.4; the sodium polyacrylate is sodium polyacrylate CAS9003-04-7 produced by Shenzhen Tuojian Biotechnology Co., Ltd.

[0059] The filter paper layer is prepared by the following steps:

[0060] 1) Take organic fibers according to the weight proportions and pulp them to obtain organic fiber pulp for later use;

[0061] 2) Disperse glass fibers according to the weight proportions, and adjust the pH to 3 with sulfuric acid solution to obtain glass fiber slurry for later use;

[0062] 3) Take the modified nanocellulose and dispersant according to the weight parts, add the glass fiber slurry, modified nanocellulose and dispersant to the organic fiber slurry, and stir continuously at a rate of 1000 r / min for 40 min to obtain the modified slurry for later use;

[0063] 4) Take tourmaline, carbon nanospheres and single-walled carbon nanotubes according to the weight parts. Melt the tourmaline at a high temperature of 1600℃ to obtain a melt. Then, use a sputtering process to deposit the melt onto the carbon nanospheres and single-walled carbon nanotubes to obtain a composite material for later use.

[0064] 5) Add the adhesive and the composite material obtained in step 4) to the modified slurry obtained in step 3) and mix them evenly to obtain a mixed slurry for later use;

[0065] 6) After diluting the mixed slurry obtained in step 5), form it to obtain a wet paper web, and then press and dry it at 85°C to obtain a dried paper web. Then, treat the paper web with corona electret method for 20 seconds to obtain a filter paper layer.

[0066] Example 2

[0067] A simple dust collector includes a vacuum cleaner body and a suction pipe 1 installed at the front end of the vacuum cleaner body. The vacuum cleaner body includes an outer shell, which includes a collection shell 2 and a main body shell connected in sequence. One end of the suction pipe 1 is provided with a brush suction pipe 4 that communicates with the suction pipe 1, and the other end of the suction pipe 1 is connected to the collection shell 2. The collection shell 2 and the main body shell are interconnected.

[0068] The main body housing contains a cyclone mechanism 31, a battery pack 32, and a PCB control board 33. The battery pack 32 is fitted inside the main body housing. The cyclone mechanism 31 is located inside the main body housing and at the end where the main body housing connects to the collection housing 2. The PCB control board 33 is located on one side of the battery pack 32. The cyclone mechanism 31 and the PCB control board 33 are electrically connected to the battery pack 32. The collection housing 2 contains a filter mechanism 21. An inner sleeve 22 extends inward from the port of the collection housing 2 near the suction pipe 1. A silicone baffle 23 is provided at the port of the inner sleeve 22.

[0069] The filtration mechanism 21 includes an upper cover plate 211, a filter element 212, and a fixing ring 213. One end of the filter element 212 is sleeved on one side of the fixing ring 213, the upper cover plate 211 is fixed to the other end of the filter element, and the other side of the fixing ring 213 is fixed to the port of the main body shell. The filter element 212 is composed of a polyvinyl alcohol layer and a filter paper layer adhered to the surface of the polyvinyl alcohol layer.

[0070] The cyclone mechanism 31 includes an impeller 311, a motor 312, and a fixed housing. The motor 312 is fixed inside the fixed housing, and the impeller 311 is located at the power output end of the motor 312. The motor 312 drives the impeller 311 to rotate within the fixed housing. The impeller 311 includes an impeller base 3111 and multiple guide vanes 3112 and multiple diverter vanes 3113 disposed on the impeller base 3111. The diverter vanes 3113 are located between two adjacent guide vanes 3112. The impeller blade 3112 extends to the edge of the impeller base 3111; the fixed shell includes an upper shell 313, a lower shell 314 and a damping ring 315, the upper shell 313 and the lower shell 314 are engaged with each other, the damping ring 315 is disposed at the engagement point of the upper shell 313 and the lower shell 314, the motor 312 is fixed to the lower shell 314, the upper shell 313 is provided with an air inlet 3131 penetrating the upper shell 313, and the fixing ring 213 is sleeved on the outside of the upper shell 313.

[0071] The lower housing 314 has a plurality of ventilation holes 3141 on its shell wall; a mesh cover 34 is provided at one end of the main housing near the collection housing 2; the main housing includes a first housing 35 and a second housing 36, and ventilation mesh 37 is provided on the side wall of the first housing 35 and the side wall of the second housing 36 corresponding to the ventilation holes 3141.

[0072] The filter paper layer comprises the following raw materials in parts by weight: 13 parts modified nanocellulose, 25 parts organic fiber, 13 parts glass fiber, 4 parts adhesive, 0.3 parts dispersant, 6 parts tourmaline, 2 parts carbon nanospheres, and 1.5 parts single-walled carbon nanotubes.

[0073] The modified nanocellulose was prepared by the following steps:

[0074] S1. Soak the nanocellulose in a 3% NaOH solution for 25 minutes, wash, centrifuge, and dry to obtain material A for later use; the nanocellulose is nano bamboo fiber.

[0075] S2. Weigh 6 parts of material A and 0.7 parts of stearic acid and dissolve them in 23 ml of ethanol to obtain a dispersion system. Heat the dispersion system at 33°C for 25 min and dry it to obtain material B for later use.

[0076] S3. Add 2.5 ml of methyltrimethoxysilane and 4 parts of dodecyl primary amine to material B and stir evenly. Vacuum the mixture and place it in an oven to heat to 45°C for 50 min. Then filter, wash and dry to obtain modified nanocellulose.

[0077] The organic fiber is a mixture of polyester fiber and polytetrafluoroethylene fiber in a weight ratio of 0.9:0.7.

[0078] The adhesive is a mixture of polyvinyl alcohol, styrene-butadiene latex, carboxyethyl cellulose and disodium hydrogen phosphate in a weight ratio of 0.9:0.7:0.5:0.4; the styrene-butadiene latex is carboxylated styrene-butadiene latex of model TG301 produced by Jingjiang Tonggao Chemical Co., Ltd.

[0079] The dispersant is a mixture of sodium polyacrylate, sodium dodecyl sulfate and sodium dodecylbenzenesulfonate in a weight ratio of 0.9:0.7:0.5; the sodium polyacrylate is sodium polyacrylate CAS9003-04-7 produced by Shenzhen Tuojian Biotechnology Co., Ltd.

[0080] The filter paper layer is prepared by the following steps:

[0081] 1) Take organic fibers according to the weight proportions and pulp them to obtain organic fiber pulp for later use;

[0082] 2) Disperse glass fibers according to the weight proportions, and adjust the pH to 3.5 with sulfuric acid solution to obtain glass fiber slurry for later use;

[0083] 3) Take the modified nanocellulose and dispersant according to the weight parts, add the glass fiber slurry, modified nanocellulose and dispersant to the organic fiber slurry, and stir continuously at a rate of 1500 r / min for 50 min to obtain the modified slurry for later use;

[0084] 4) Take tourmaline, carbon nanospheres and single-walled carbon nanotubes according to the weight parts. Melt the tourmaline at a high temperature of 1625℃ to obtain a melt. Then, use a sputtering process to deposit the melt onto the carbon nanospheres and single-walled carbon nanotubes to obtain a composite material for later use.

[0085] 5) Add the adhesive and the composite material obtained in step 4) to the modified slurry obtained in step 3) and mix them evenly to obtain a mixed slurry for later use;

[0086] 6) After diluting the mixed slurry obtained in step 5), form it to obtain a wet paper web, and then press and dry it at 88°C to obtain a dried paper web. Then, treat the paper web with corona electret method for 23 seconds to obtain a filter paper layer.

[0087] Example 3

[0088] A simple dust collector includes a vacuum cleaner body and a suction pipe 1 installed at the front end of the vacuum cleaner body. The vacuum cleaner body includes an outer shell, which includes a collection shell 2 and a main body shell connected in sequence. One end of the suction pipe 1 is provided with a brush suction pipe 4 that communicates with the suction pipe 1, and the other end of the suction pipe 1 is connected to the collection shell 2. The collection shell 2 and the main body shell are interconnected.

[0089] The main body housing contains a cyclone mechanism 31, a battery pack 32, and a PCB control board 33. The battery pack 32 is fitted inside the main body housing. The cyclone mechanism 31 is located inside the main body housing and at the end where the main body housing connects to the collection housing 2. The PCB control board 33 is located on one side of the battery pack 32. The cyclone mechanism 31 and the PCB control board 33 are electrically connected to the battery pack 32. The collection housing 2 contains a filter mechanism 21. An inner sleeve 22 extends inward from the port of the collection housing 2 near the suction pipe 1. A silicone baffle 23 is provided at the port of the inner sleeve 22.

[0090] The filtration mechanism 21 includes an upper cover plate 211, a filter element 212, and a fixing ring 213. One end of the filter element 212 is sleeved on one side of the fixing ring 213, the upper cover plate 211 is fixed to the other end of the filter element, and the other side of the fixing ring 213 is fixed to the port of the main body shell. The filter element 212 is composed of a polyvinyl alcohol layer and a filter paper layer adhered to the surface of the polyvinyl alcohol layer.

[0091] The cyclone mechanism 31 includes an impeller 311, a motor 312, and a fixed housing. The motor 312 is fixed inside the fixed housing, and the impeller 311 is located at the power output end of the motor 312. The motor 312 drives the impeller 311 to rotate within the fixed housing. The impeller 311 includes an impeller base 3111 and multiple guide vanes 3112 and multiple diverter vanes 3113 disposed on the impeller base 3111. The diverter vanes 3113 are located between two adjacent guide vanes 3112. The impeller blade 3112 extends to the edge of the impeller base 3111; the fixed shell includes an upper shell 313, a lower shell 314 and a damping ring 315, the upper shell 313 and the lower shell 314 are engaged with each other, the damping ring 315 is disposed at the engagement point of the upper shell 313 and the lower shell 314, the motor 312 is fixed to the lower shell 314, the upper shell 313 is provided with an air inlet 3131 penetrating the upper shell 313, and the fixing ring 213 is sleeved on the outside of the upper shell 313.

[0092] The lower housing 314 has a plurality of ventilation holes 3141 on its shell wall; a mesh cover 34 is provided at one end of the main housing near the collection housing 2; the main housing includes a first housing 35 and a second housing 36, and ventilation mesh 37 is provided on the side wall of the first housing 35 and the side wall of the second housing 36 corresponding to the ventilation holes 3141.

[0093] The filter paper layer comprises the following raw materials in parts by weight: 15 parts modified nanocellulose, 30 parts organic fiber, 15 parts glass fiber, 5 parts adhesive, 0.5 parts dispersant, 8 parts tourmaline, 3 parts carbon nanospheres, and 2 parts single-walled carbon nanotubes.

[0094] The modified nanocellulose was prepared by the following steps:

[0095] S1. Soak the nanocellulose in a 4% NaOH solution for 30 minutes, wash, centrifuge, and dry to obtain material A for later use; the nanocellulose is nano bamboo fiber.

[0096] S2. Weigh 8 parts of material A and 0.8 parts of stearic acid and dissolve them in 25 ml of ethanol to obtain a dispersion system. Heat the dispersion system at 35°C for 30 min and dry it to obtain material B for later use.

[0097] S3. Add 3 ml of methyltrimethoxysilane and 5 parts of dodecyl primary amine to material B, stir evenly, draw a vacuum, put it in an oven and heat to 50°C for 60 min, then filter, wash and dry to obtain modified nanocellulose.

[0098] The organic fiber is a mixture of polyester fiber and polytetrafluoroethylene fiber in a weight ratio of 1.0:0.8.

[0099] The adhesive is a mixture of polyvinyl alcohol, styrene-butadiene latex, carboxyethyl cellulose and disodium hydrogen phosphate in a weight ratio of 1.0:0.8:0.6:0.5; the styrene-butadiene latex is carboxylated styrene-butadiene latex of model TG301 produced by Jingjiang Tonggao Chemical Co., Ltd.

[0100] The dispersant is a mixture of sodium polyacrylate, sodium dodecyl sulfate and sodium dodecylbenzenesulfonate in a weight ratio of 1.0:0.8:0.6; the sodium polyacrylate is sodium polyacrylate CAS9003-04-7 produced by Shenzhen Tuojian Biotechnology Co., Ltd.

[0101] The filter paper layer is prepared by the following steps:

[0102] 1) Take organic fibers according to the weight proportions and pulp them to obtain organic fiber pulp for later use;

[0103] 2) Disperse glass fibers according to the weight proportions, and adjust the pH to 3.5 with sulfuric acid solution to obtain glass fiber slurry for later use;

[0104] 3) Take the modified nanocellulose and dispersant according to the weight parts, add the glass fiber slurry, modified nanocellulose and dispersant to the organic fiber slurry, and stir continuously at a rate of 2000 r / min for 60 min to obtain the modified slurry for later use;

[0105] 4) Take tourmaline, carbon nanospheres and single-walled carbon nanotubes according to the weight parts. Melt the tourmaline at a high temperature of 1650℃ to obtain a melt. Then, use a sputtering process to deposit the melt onto the carbon nanospheres and single-walled carbon nanotubes to obtain a composite material for later use.

[0106] 5) Add the adhesive and the composite material obtained in step 4) to the modified slurry obtained in step 3) and mix them evenly to obtain a mixed slurry for later use;

[0107] 6) After diluting the mixed slurry obtained in step 5), form it to obtain a wet paper web, and then press and dry it at 90°C to obtain a dried paper web. Then, treat the paper web with corona electret method for 25 seconds to obtain a filter paper layer.

[0108] Example 4

[0109] A simple dust collector includes a vacuum cleaner body and a suction pipe 1 installed at the front end of the vacuum cleaner body. The vacuum cleaner body includes an outer shell, which includes a collection shell 2 and a main body shell connected in sequence. One end of the suction pipe 1 is provided with a brush suction pipe 4 that communicates with the suction pipe 1, and the other end of the suction pipe 1 is connected to the collection shell 2. The collection shell 2 and the main body shell are interconnected.

[0110] The main body housing contains a cyclone mechanism 31, a battery pack 32, and a PCB control board 33. The battery pack 32 is fitted inside the main body housing. The cyclone mechanism 31 is located inside the main body housing and at the end where the main body housing connects to the collection housing 2. The PCB control board 33 is located on one side of the battery pack 32. The cyclone mechanism 31 and the PCB control board 33 are electrically connected to the battery pack 32. The collection housing 2 contains a filter mechanism 21. An inner sleeve 22 extends inward from the port of the collection housing 2 near the suction pipe 1. A silicone baffle 23 is provided at the port of the inner sleeve 22.

[0111] The filtration mechanism 21 includes an upper cover plate 211, a filter element 212, and a fixing ring 213. One end of the filter element 212 is sleeved on one side of the fixing ring 213, the upper cover plate 211 is fixed to the other end of the filter element, and the other side of the fixing ring 213 is fixed to the port of the main body shell. The filter element 212 is composed of a polyvinyl alcohol layer and a filter paper layer adhered to the surface of the polyvinyl alcohol layer.

[0112] The cyclone mechanism 31 includes an impeller 311, a motor 312, and a fixed housing. The motor 312 is fixed inside the fixed housing, and the impeller 311 is located at the power output end of the motor 312. The motor 312 drives the impeller 311 to rotate within the fixed housing. The impeller 311 includes an impeller base 3111 and multiple guide vanes 3112 and multiple diverter vanes 3113 disposed on the impeller base 3111. The diverter vanes 3113 are located between two adjacent guide vanes 3112. The impeller blade 3112 extends to the edge of the impeller base 3111; the fixed shell includes an upper shell 313, a lower shell 314 and a damping ring 315, the upper shell 313 and the lower shell 314 are engaged with each other, the damping ring 315 is disposed at the engagement point of the upper shell 313 and the lower shell 314, the motor 312 is fixed to the lower shell 314, the upper shell 313 is provided with an air inlet 3131 penetrating the upper shell 313, and the fixing ring 213 is sleeved on the outside of the upper shell 313.

[0113] The lower housing 314 has a plurality of ventilation holes 3141 on its shell wall; a mesh cover 34 is provided at one end of the main housing near the collection housing 2; the main housing includes a first housing 35 and a second housing 36, and ventilation mesh 37 is provided on the side wall of the first housing 35 and the side wall of the second housing 36 corresponding to the ventilation holes 3141.

[0114] The filter paper layer comprises the following raw materials in parts by weight: 18 parts modified nanocellulose, 35 parts organic fiber, 18 parts glass fiber, 6 parts adhesive, 0.8 parts dispersant, 10 parts tourmaline, 4 parts carbon nanospheres, and 2.5 parts single-walled carbon nanotubes.

[0115] The modified nanocellulose was prepared by the following steps:

[0116] S1. Soak the nanocellulose in a 5% NaOH solution for 35 minutes, wash, centrifuge, and dry to obtain material A for later use; the nanocellulose is nano bamboo fiber.

[0117] S2. Weigh 9 parts of material A and 0.9 parts of stearic acid and dissolve them in 28 ml of ethanol to obtain a dispersion system. Heat the dispersion system at 38°C for 35 min and dry it to obtain material B for later use.

[0118] S3. Add 3.5 ml of methyltrimethoxysilane and 6 parts of dodecyl primary amine to material B and stir evenly. Vacuum the mixture and place it in an oven to heat to 55°C for 70 min. Then filter, wash and dry to obtain modified nanocellulose.

[0119] The organic fiber is a mixture of polyester fiber and polytetrafluoroethylene fiber in a weight ratio of 1.1:0.9.

[0120] The adhesive is a mixture of polyvinyl alcohol, styrene-butadiene latex, carboxyethyl cellulose and disodium hydrogen phosphate in a weight ratio of 1.1:0.9:0.7:0.6; the styrene-butadiene latex is carboxylated styrene-butadiene latex of model TG301 produced by Jingjiang Tonggao Chemical Co., Ltd.

[0121] The dispersant is a mixture of sodium polyacrylate, sodium dodecyl sulfate and sodium dodecylbenzenesulfonate in a weight ratio of 1.1:0.9:0.7; the sodium polyacrylate is sodium polyacrylate CAS9003-04-7 produced by Shenzhen Tuojian Biotechnology Co., Ltd.

[0122] The filter paper layer is prepared by the following steps:

[0123] 1) Take organic fibers according to the weight proportions and pulp them to obtain organic fiber pulp for later use;

[0124] 2) Disperse glass fibers according to the weight proportions, and adjust the pH to 4 with sulfuric acid solution to obtain glass fiber slurry for later use;

[0125] 3) Take the modified nanocellulose and dispersant according to the weight parts, add the glass fiber slurry, modified nanocellulose and dispersant to the organic fiber slurry, and stir continuously at a rate of 2500 r / min for 70 min to obtain the modified slurry for later use;

[0126] 4) Take tourmaline, carbon nanospheres and single-walled carbon nanotubes according to the weight parts. Melt the tourmaline at a high temperature of 1675℃ to obtain a melt. Then, use a sputtering process to deposit the melt onto the carbon nanospheres and single-walled carbon nanotubes to obtain a composite material for later use.

[0127] 5) Add the adhesive and the composite material obtained in step 4) to the modified slurry obtained in step 3) and mix them evenly to obtain a mixed slurry for later use;

[0128] 6) After diluting the mixed slurry obtained in step 5), form it to obtain a wet paper web, and then press and dry it at 93°C to obtain a dried paper web. The paper web is then subjected to corona electret treatment for 28 seconds to obtain a filter paper layer.

[0129] Example 5

[0130] A simple dust collector includes a vacuum cleaner body and a suction pipe 1 installed at the front end of the vacuum cleaner body. The vacuum cleaner body includes an outer shell, which includes a collection shell 2 and a main body shell connected in sequence. One end of the suction pipe 1 is provided with a brush suction pipe 4 that communicates with the suction pipe 1, and the other end of the suction pipe 1 is connected to the collection shell 2. The collection shell 2 and the main body shell are interconnected.

[0131] The main body housing contains a cyclone mechanism 31, a battery pack 32, and a PCB control board 33. The battery pack 32 is fitted inside the main body housing. The cyclone mechanism 31 is located inside the main body housing and at the end where the main body housing connects to the collection housing 2. The PCB control board 33 is located on one side of the battery pack 32. The cyclone mechanism 31 and the PCB control board 33 are electrically connected to the battery pack 32. The collection housing 2 contains a filter mechanism 21. An inner sleeve 22 extends inward from the port of the collection housing 2 near the suction pipe 1. A silicone baffle 23 is provided at the port of the inner sleeve 22.

[0132] The filtration mechanism 21 includes an upper cover plate 211, a filter element 212, and a fixing ring 213. One end of the filter element 212 is sleeved on one side of the fixing ring 213, the upper cover plate 211 is fixed to the other end of the filter element, and the other side of the fixing ring 213 is fixed to the port of the main body shell. The filter element 212 is composed of a polyvinyl alcohol layer and a filter paper layer adhered to the surface of the polyvinyl alcohol layer.

[0133] The cyclone mechanism 31 includes an impeller 311, a motor 312, and a fixed housing. The motor 312 is fixed inside the fixed housing, and the impeller 311 is located at the power output end of the motor 312. The motor 312 drives the impeller 311 to rotate within the fixed housing. The impeller 311 includes an impeller base 3111 and multiple guide vanes 3112 and multiple diverter vanes 3113 disposed on the impeller base 3111. The diverter vanes 3113 are located between two adjacent guide vanes 3112. The impeller blade 3112 extends to the edge of the impeller base 3111; the fixed shell includes an upper shell 313, a lower shell 314 and a damping ring 315, the upper shell 313 and the lower shell 314 are engaged with each other, the damping ring 315 is disposed at the engagement point of the upper shell 313 and the lower shell 314, the motor 312 is fixed to the lower shell 314, the upper shell 313 is provided with an air inlet 3131 penetrating the upper shell 313, and the fixing ring 213 is sleeved on the outside of the upper shell 313.

[0134] The lower housing 314 has a plurality of ventilation holes 3141 on its shell wall; a mesh cover 34 is provided at one end of the main housing near the collection housing 2; the main housing includes a first housing 35 and a second housing 36, and ventilation mesh 37 is provided on the side wall of the first housing 35 and the side wall of the second housing 36 corresponding to the ventilation holes 3141.

[0135] The filter paper layer comprises the following raw materials in parts by weight: 20 parts modified nanocellulose, 40 parts organic fiber, 20 parts glass fiber, 7 parts adhesive, 1.0 part dispersant, 12 parts tourmaline, 5 parts carbon nanospheres, and 3 parts single-walled carbon nanotubes.

[0136] The modified nanocellulose was prepared by the following steps:

[0137] S1. Soak the nanocellulose in a 6% NaOH solution for 40 minutes, wash, centrifuge, and dry to obtain material A for later use; the nanocellulose is nano bamboo fiber.

[0138] S2. Weigh 10 parts of material A and 1 part of stearic acid and dissolve them in 30 ml of ethanol to obtain a dispersion system. Heat the dispersion system at 40°C for 40 min and dry it to obtain material B for later use.

[0139] S3. Add 4 ml of methyltrimethoxysilane and 7 parts of dodecyl primary amine to material B, stir evenly, draw a vacuum, put it in an oven and heat to 60°C for 80 min, then filter, wash and dry to obtain modified nanocellulose.

[0140] The organic fiber is a mixture of polyester fiber and polytetrafluoroethylene fiber in a weight ratio of 1.2:1.0.

[0141] The adhesive is a mixture of polyvinyl alcohol, styrene-butadiene latex, carboxyethyl cellulose and disodium hydrogen phosphate in a weight ratio of 1.2:1.0:0.8:0.7; the styrene-butadiene latex is carboxylated styrene-butadiene latex of model TG301 produced by Jingjiang Tonggao Chemical Co., Ltd.

[0142] The dispersant is a mixture of sodium polyacrylate, sodium dodecyl sulfate and sodium dodecylbenzenesulfonate in a weight ratio of 1.2:1.0:0.8; the sodium polyacrylate is sodium polyacrylate CAS9003-04-7 produced by Shenzhen Tuojian Biotechnology Co., Ltd.

[0143] The filter paper layer is prepared by the following steps:

[0144] 1) Take organic fibers according to the weight proportions and pulp them to obtain organic fiber pulp for later use;

[0145] 2) Disperse glass fibers according to the weight proportions, and adjust the pH to 4 with sulfuric acid solution to obtain glass fiber slurry for later use;

[0146] 3) Take the modified nanocellulose and dispersant according to the weight parts, add the glass fiber slurry, modified nanocellulose and dispersant to the organic fiber slurry, and stir continuously at a rate of 3000 r / min for 80 min to obtain the modified slurry for later use;

[0147] 4) Take tourmaline, carbon nanospheres and single-walled carbon nanotubes according to the weight parts. Melt the tourmaline at a high temperature of 1700℃ to obtain a melt. Then, use a sputtering process to deposit the melt onto the carbon nanospheres and single-walled carbon nanotubes to obtain a composite material for later use.

[0148] 5) Add the adhesive and the composite material obtained in step 4) to the modified slurry obtained in step 3) and mix them evenly to obtain a mixed slurry for later use;

[0149] 6) After diluting the mixed slurry obtained in step 5), form it to obtain a wet paper web, and then press and dry it at 95°C to obtain a dried paper web. Then, treat the paper web with corona electret method for 30 seconds to obtain a filter paper layer.

[0150] Comparative Example 1

[0151] The difference between this comparative example and Example 1 above is that the raw material of the filter paper layer in this comparative example does not involve modification of the nanocellulose. The rest of the contents of this comparative example are the same as in Example 1, and will not be repeated here.

[0152] Comparative Example 2

[0153] The difference between this comparative example and Example 3 is that the filter paper layer in this comparative example does not contain tourmaline, carbon nanospheres, or single-walled carbon nanotubes. The rest of this comparative example is the same as Example 3 and will not be repeated here.

[0154] The performance of the filter paper layers prepared in Examples 1, 3, 5 and Comparative Examples 1-2, as well as commercially available 3N11CN filter paper, was tested, and the results are shown in Table 1:

[0155] The filter paper was tested using the Palas MFP3000 filter media testing system. The dust used in the test was standard A2 fine ash, conforming to ISO 12103-1. The specified test conditions included a termination pressure difference of 2000 Pa and a dust concentration of 1000 g / m³. 3 Rated gas flow rate: 66 L / min; Sample area: 100 cm² 2 The surface velocity of the sample was 11.1 cm / s.

[0156] The water absorption test shall be conducted in accordance with GB / T461.1, and the absorption time shall be 60 min.

[0157] Table 1

[0158]

[0159] As can be seen from the table above, the filter paper prepared in Examples 1, 3 and 5 of the present invention has excellent properties, good hydrophobicity, initial resistance and dust holding capacity, and high comprehensive performance in filtering particles ≥0.2μm. It has extremely broad market prospects and application value, long service life and good environmental performance.

[0160] The above embodiments are preferred implementations of the present invention. In addition, the present invention can be implemented in other ways. Any obvious substitutions without departing from the concept of the present invention are within the protection scope of the present invention.

Claims

1. A simple dust collector, comprising a vacuum cleaner body and a suction pipe installed at the front end of the vacuum cleaner body, characterized in that: The vacuum cleaner body includes an outer shell, which includes a collection shell and a main body shell connected in sequence. One end of the suction tube is provided with a brush suction tube that communicates with the suction tube, and the other end of the suction tube is connected to the collection shell. The collection shell and the main body shell are interconnected. The main body housing contains a cyclone mechanism, a battery pack, and a PCB control board. The battery pack is fitted inside the main body housing. The cyclone mechanism is located inside the main body housing and at the end where the main body housing connects to the collection housing. The PCB control board is located on one side of the battery pack. The cyclone mechanism and the PCB control board are electrically connected to the battery pack. The collection housing contains a filtration mechanism. The filtration mechanism includes an upper cover plate, a filter element, and a fixing ring. One end of the filter element is fitted onto one side of the fixing ring, the upper cover plate is fixed to the other end of the filter element, and the other side of the fixing ring is fixed to the port of the main body shell. The filter element is composed of a polyvinyl alcohol layer and a filter paper layer adhered to the surface of the polyvinyl alcohol layer. The filter paper layer comprises the following raw materials in parts by weight: 10-20 parts modified nanocellulose, 20-40 parts organic fiber, 10-20 parts glass fiber, 3-7 parts adhesive, 0.1-1.0 parts dispersant, 4-12 parts tourmaline, 1-5 parts carbon nanospheres, and 1-3 parts single-walled carbon nanotubes. The filter paper layer is prepared by the following steps: 1) Take organic fibers according to the weight proportions and pulp them to obtain organic fiber pulp for later use; 2) Disperse glass fibers according to the weight proportions, and add sulfuric acid solution to adjust the pH to 3-4 to obtain glass fiber slurry for later use; 3) Take the modified nanocellulose and dispersant according to the weight parts, add the glass fiber slurry, modified nanocellulose and dispersant to the organic fiber slurry, and stir continuously at a rate of 1000-3000 r / min for 40-80 min to obtain the modified slurry for later use; 4) Take tourmaline, carbon nanospheres and single-walled carbon nanotubes according to the weight parts. Melt the tourmaline at a high temperature of 1600-1700℃ to obtain a melt. Then, use a sputtering process to deposit the melt onto the carbon nanospheres and single-walled carbon nanotubes to obtain a composite material for later use. 5) Add the adhesive and the composite material obtained in step 4) to the modified slurry obtained in step 3) and mix them evenly to obtain a mixed slurry for later use; 6) After diluting the mixed slurry obtained in step 5), form it into a wet paper web, press it, dry it at 85-95℃ to obtain a dried paper web, and then treat the paper web with corona electret for 20-30s to obtain a filter paper layer.

2. The simplified dust collector according to claim 1, characterized in that: The collection housing has an inner sleeve extending inward from the port near the suction pipe end, and a silicone baffle is provided at the port of the inner sleeve.

3. A simple dust collector according to claim 1, characterized in that: The cyclone mechanism includes an impeller, a motor, and a fixed housing. The motor is fixed inside the fixed housing, and the impeller is located at the power output end of the motor. The motor drives the impeller to rotate inside the fixed housing.

4. A simple dust collector according to claim 3, characterized in that: The impeller includes an impeller base and a plurality of guide vanes and a plurality of split vanes disposed on the impeller base. The split vanes are located between two adjacent guide vanes and extend to the edge of the impeller base.

5. A simple dust collector according to claim 3, characterized in that: The fixed housing includes an upper housing, a lower housing, and a shock-absorbing ring. The upper housing and the lower housing are interlocked. The shock-absorbing ring is located at the interlocking point between the upper housing and the lower housing. The motor is fixed to the lower housing. The upper housing has an air inlet that penetrates through the upper housing. The fixed ring is sleeved on the outside of the upper housing.

6. A simple dust collector according to claim 5, characterized in that: The lower shell has several ventilation holes in its shell wall; the main shell has a mesh cover at one end near the collection shell.

7. A simple dust collector according to claim 6, characterized in that: The main shell includes a first shell and a second shell, and the side walls of the first shell and the second shell are provided with breathable mesh corresponding to the vent holes.

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