A mask for filtering and disinfecting airborne droplets, viruses and bacteria

Abstract

The present invention discloses a mask for filtering and disinfecting viruses and bacteria in airborne droplets, belonging to the technical field of masks, and aims to solve the problem that existing masks cannot disinfect the filtered viruses and bacteria, there is a risk of secondary contact and infection of the human respiratory tract, and in scenes where it is not suitable to wear a mask, viruses and bacteria cannot be protected. When the wearer is in a crowded area, there is a problem of the spread of airborne viruses and bacteria. The present invention comprises two main bodies, which are connected by left and right connecting plates. The mask can filter and disinfect viruses and bacteria in the gas exhaled and inhaled by the wearer, and can effectively protect against airborne viruses and bacteria when the wearer is in a crowded area. When dining, holding meetings, etc. in public places, the mouth-nose mask breathing mode of the mask is switched to the nasal airway breathing mode, and nasal breathing is used instead, which can improve the defense capability against airborne viruses and bacteria.

Description

Technical Field

[0001] The invention discloses a mask for filtering and disinfecting viruses and bacteria in air droplets. The invention belongs to the technical field of masks, and particularly relates to the technical field of masks for filtering and disinfecting viruses and bacteria in air droplets. Background Art

[0002] Respiratory infections are often caused by viruses and bacteria, and are mostly transmitted between people through airborne droplets. Respiratory infections include acute upper respiratory tract infections, acute tracheitis and bronchitis, and pneumonia. Common respiratory viruses include influenza, respiratory syncytial virus, coxsackievirus, adenovirus, SARS, and the novel coronavirus.

[0003] Approximately 70%-80% of acute upper respiratory tract infections are caused by viruses, sometimes referred to as viral upper respiratory tract infections. Acute upper respiratory tract infections are primarily characterized by clear nasal discharge, sneezing, sore throat, and cough, sometimes accompanied by a low-grade fever. Acute tracheitis and bronchitis often present with a cough and a small amount of white sputum. Coughing up purulent sputum may indicate a bacterial infection. Pneumonia often presents with cough, purulent sputum, a high fever, and may also be accompanied by chest pain, difficulty breathing, and other related symptoms. Respiratory diseases caused by coronaviruses are particularly severe and can even be life-threatening.

[0004] Coronaviruses are a large family of viruses that can cause more serious illnesses, including the common cold, Middle East Respiratory Syndrome (MERS), and Severe Acute Respiratory Syndrome (SARS). Coronaviruses were first isolated from chickens in 1937, and the first human coronavirus was isolated in 1965. Coronaviruses are approximately 80 to 120 nanometers in diameter, spherical or oval in shape, and exhibit polymorphism. They have the largest genome of any known RNA virus. Infections caused by this virus primarily occur in winter and early spring, and the human illnesses they cause are primarily respiratory infections. Common signs of coronavirus infection in humans include respiratory symptoms, fever, cough, shortness of breath, and difficulty breathing. In more severe cases, infection can lead to pneumonia, severe acute respiratory syndrome, renal failure, and even death.

[0005] Currently, protection against respiratory viruses primarily focuses on controlling the source of infection and blocking transmission routes. Wearing various types of medical masks, N95 masks, and newer masks can, to a certain extent, block transmission routes. While different types of masks have varying performance and implementation standards, commonly used masks have generally undergone three generations of improvements. First-generation gauze masks: Made of gauze with large pores, they can only intercept large airborne particles and fail to block PM2.5. They offer poor protection and are less comfortable. Second-generation meltblown non-woven masks: Made of non-woven fabric, they can intercept large airborne particles and absorb PM2.5 through electrostatic effects, providing a limited barrier against bacteria and viruses. They are currently the mainstream masks. Third-generation membrane masks: Made of advanced membrane materials with small pores, they use physical principles to filter PM2.5 and other particles, bacteria, and viruses from the air, representing the future mainstream mask development direction.

[0006] Medical masks can be divided into medical protective masks, medical surgical masks, and ordinary medical masks according to their performance and implementation standards. Medical protective masks comply with the GB19083-2010 "Technical Requirements for Medical Protective Masks" standard. At an air flow rate of (85±2) L / min, the filtration efficiency of sodium chloride aerosols with an aerodynamic median diameter of (0.25±0.06) μm should be no less than 95%, which means they meet the N95 (or FFP2) level and above. Under the above flow conditions, the inhalation resistance should not exceed 343.2 Pa (35 mmH2O).

[0007] Medical surgical masks comply with the standard YY 0469-2011 "Technical Requirements for Medical Surgical Masks". Under the condition of air flow rate (30±2) L / min, the filtration efficiency of sodium chloride aerosol with an aerodynamic median diameter of (0.25±0.06) μm is not less than 30%; under the specified conditions, the bacterial filtration efficiency of Staphylococcus aureus aerosol with an average particle diameter of (3±0.3) μm is not less than 95%, and under the conditions of filtration efficiency flow, the inhalation resistance does not exceed 49 Pa, and the expiratory resistance does not exceed 29.4 Pa.

[0008] Ordinary medical masks comply with the relevant registered product standards (YZB) or YY / T0969-2013 "Disposable Medical Masks". They generally lack the filtration efficiency requirements for particles and bacteria, or the filtration efficiency requirements for particles and bacteria are lower than those of medical surgical masks and medical protective masks. They are suitable for general protection of medical staff.

[0009] Since national mask standards do not clearly define N95 masks, they are generally made of three layers of material, with the highest number of layers being five. While increasing the number of layers improves filtration efficiency, this also affects ventilation, making breathing difficult. In a three-layer structure, the outer layer is a non-woven fabric or ultra-thin polypropylene meltblown material layer, which is waterproof. The middle layer is a polypropylene fiber meltblown material layer, which has a certain filtration effect and can effectively block viruses or bacteria. The inner layer is ordinary sanitary gauze or non-woven fabric, which is breathable and has anti-allergic effects. The tight structure and high-efficiency filtration of the N95 mask increase breathing resistance and reduce comfort.

[0010] New medical protective masks developed in recent years are made of knitted fabrics, non-woven fabrics, filters and other materials. They combine permeability and sealing. They are not only moisture-proof and antibacterial, but also solve problems such as sweating and stuffiness caused by the summer heat. The non-woven fabric layer uses nano non-woven fabrics to prevent and inhibit Staphylococcus aureus and Mycobacterium tuberculosis in the air, which are Legionella that can easily cause lung infections. They are also washable, long-lasting and reusable.

[0011] Nanofilm masks are currently in the trial application phase. These new masks, using a single-layer nano-PTFE (tetrafluoroethylene) film as their core filter material, combine excellent breathability and protective properties, representing the future trend in mask development. The core material of these masks is a PTFE (tetrafluoroethylene) nanofilm with fiber diameters between 100 and 200 nanometers. These masks have three key advantages: First, they offer higher barrier efficiency. This is primarily due to the smaller fiber diameter than traditional materials (the non-woven fabrics used in traditional masks have fiber diameters of over 1000 nanometers). This allows them to more effectively block PM2.5 (particles with an aerodynamic equivalent diameter of 2400 nanometers or less) and effectively reduce the concentration of bacteria and viruses in the air. Second, they offer a longer lifespan. This is due to their application of physical principles to isolate air pollutants, making them more durable. (The larger fiber diameter of traditional non-woven fabrics requires electrostatic attraction to attract particles, which can be quickly lost due to factors such as temperature and humidity, making them disposable.) A new nanofiber mask developed by the Hefei Branch of the Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, can be recycled for up to 20 days in pollution-free conditions, with a protection rate of up to 99.99%. Thirdly, it allows for easier breathing while wearing. This is primarily due to the enhanced breathability and moisture resistance of the nanofilm. The film mask, with its highly uniform pore distribution, offers higher air permeability. Combined with the film's moisture-proof and breathable properties, it provides a more comfortable breathing experience. The film mask combines excellent breathability and protective properties.

[0012] Both medical masks and N95 masks are disposable masks that have a good barrier effect against viruses and bacteria and need to be replaced every four hours. However, medical masks have poor sealing properties around the mouth and nose, and N95 masks are not breathable or comfortable. Nanofilm masks have good virus and bacteria filtration effects, are reusable, and have good breathability. Although medical masks, N95 masks, and nano masks all have their own advantages, none of these masks can disinfect the viruses and bacteria they filter, and there is a risk of secondary contact and infection of the human respiratory tract. At the same time, masks cannot protect against viruses and bacteria in situations where it is not appropriate to wear them, such as dining, speaking in meetings, and when in crowded areas, there is a risk of the spread of viruses and bacteria through airborne droplets. Summary of the Invention

[0013] The purpose of the present invention is to provide a mask that filters and kills airborne viruses and bacteria, so as to solve the problem that the above-mentioned existing masks cannot disinfect the filtered viruses and bacteria, and there is a risk of secondary contact and infection of the human respiratory tract. At the same time, in scenes where it is not appropriate to wear a mask, such as dining, speaking in meetings, etc., it cannot protect against viruses and bacteria. When in crowded areas, there is a risk of the spread of airborne viruses and bacteria.

[0014] The technical solution adopted in the present invention is as follows:

[0015] A mask for filtering and disinfecting viruses and bacteria in air droplets comprises two main bodies, which are connected by left and right connecting plates, and corresponding surfaces of the two main bodies are detachably connected with nasal air guide structures, and the bottom ends of the main bodies are detachably connected with an oronasal mask air guide structure, the main bodies are fixed to the user's face by fixing straps, and the bottom ends of the left and right connecting plates are equipped with eye protection structures for protecting the eyes, a virus filtering and cleaning chamber for disinfecting viruses is provided inside the main body, and a switching unit for adjusting the connectivity between the nasal air guide structure and the oronasal mask air guide structure is provided inside the main body.

[0016] In the technical solution of the present application, the main body is fixed to the face of the user by a fixed strap, and then a virus filtering and eliminating chamber is provided inside the main body, and the viruses entering the air flow are disinfected by the virus filtering and eliminating chamber, thereby ensuring the cleanliness of the air flow inhaled by the human body in the later period. At the same time, an oral and nasal mask air guide structure and a nasal air guide structure suitable for different scenarios are provided, so that the user can operate through the switching unit according to the needs of use, thereby changing the air guide state of the oral and nasal mask air guide structure and the nasal air guide structure. At the same time, an eye protection structure for protecting the eyes is provided, so that the whole can filter and eliminate viruses and bacteria in the exhaled and inhaled gas of the wearer, and effectively defend against airborne droplet viruses and bacteria when in a crowded area. When dining in public places, speaking in meetings, etc., the oral and nasal mask breathing mode of the mask is switched to the nasal airway breathing mode, and nasal breathing is used instead, which can improve the defense ability against airborne droplet viruses and bacteria and reduce the risk of virus and bacterial transmission and infection.

[0017] Furthermore, a main trachea body is provided at the bottom end of the main body, and the bottom end of the virus filtration and elimination chamber is detachably mounted on the top end of the main trachea body. The interior of the virus filtration and elimination chamber is provided with a light shielding plate, a virus filter membrane and a virus elimination lamp bead from top to bottom. The light shielding plates are arranged in an interlaced manner, and the virus elimination lamp bead is connected to an external power supply box through a wire.

[0018] Furthermore, a return plate is installed inside the virus filtration and disinfection chamber at the position corresponding to the virus filter membrane, and a pressure plate for installing the virus filter membrane is provided at the bottom end of the return plate. The virus filter membrane is made of a carbon nanofiber filter membrane or a graphene filter membrane.

[0019] Furthermore, the switching unit includes an airway switching valve arranged below the virus filter membrane, a transfer shaft is arranged inside the airway switching valve, and the transfer shaft passes through and extends to the outside of the main airway body and is connected to a switching valve knob, a nasal air channel is arranged inside the main airway body below one side of the airway switching valve, a nasal air channel is installed inside the nasal air channel, an oronasal mask air channel is arranged inside the main airway body on the other side of the airway switching valve, a pipe bendable joint is arranged on the main airway body below the switching unit, and an oronasal mask air channel bayonet is arranged at the bottom end of the main body.

[0020] Furthermore, the nasal air guide structure includes an air guide tube, a nasal air guide interface is provided on the side of the air guide tube corresponding to the position of the nasal air guide bayonet, an air guide hose is slidably installed inside the air guide tube, and a nasal breathing plug is installed on the top of the air guide hose.

[0021] Furthermore, the oronasal mask air guide structure includes an oronasal mask, a sealing gasket is provided at the edge of the oronasal mask, an oronasal mask gas duct is provided on the side of the oronasal mask, and an oronasal mask air guide interface is provided on the oronasal mask gas duct at a position corresponding to the oronasal mask air guide bayonet.

[0022] Furthermore, the eye protection structure includes goggles, and the top ends of the goggles are fixed to the left and right connecting plates through hinges.

[0023] Furthermore, the fixing strap includes an upper strap and a lower strap, a strap fixing ring is installed on the top side surface of the main trachea body at a position corresponding to the upper strap, and the upper strap is fixed in the fixing ring by a pressure ring.

[0024] Furthermore, pressure rings are installed at both ends of the lower strap, and connecting straps are connected to both sides of the lower strap through a rotating shaft. Openings are distributed on the connecting straps, and short cylinders are installed at positions corresponding to the connecting straps on the main airway body.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0026] The mask can achieve simultaneous filtration and disinfection of inhaled and exhaled gases. By using carbon nanofiber filter membranes or graphene filter membranes, the virus blocking rate in the gas can reach more than 99% after passing through the filter membrane of the mask disinfection unit. At the same time, the disinfection unit uses deep ultraviolet disinfection to fully disinfect the viruses filtered on the filter membrane. Within the effective disinfection distance, the virus inactivation rate can reach 99.99%, making it safer for people wearing protective masks to inhale and exhale gases. The air droplet virus filtering and disinfection mask can realize the mode switching between the nasal air guide structure and the oral and nasal mask air guide structure, which can be used when eating, When drinking water or speaking in meetings, switch from the oral and nasal mask breathing mode to the nasal airway breathing mode, which greatly reduces the risk of virus transmission in special scenarios. The air droplet virus filtering and disinfection mask adopts a single-layer nano-scale filter membrane design, which can achieve smooth ventilation and improve the comfort of wearing the mask. The single-layer filter membrane is designed to be removable, replaceable, washable, disinfected, and reusable. The disinfection unit battery box is designed to be separate from the disinfection unit. The power supply can be hung on the body or put in a bag, which is easier to replace and charge. The battery box is connected to the air droplet virus filtering and disinfection mask through a soft wire.

[0027] With the continuous improvement in the production and application of air droplet virus filtering and disinfection masks, the convenience, comfort and safety of the products are constantly improving. Breathable and moisture-absorbing materials can be added to the outer wall of the tube body close to the human skin to improve the comfort of long-term wearing. While ensuring safety, the amount of material used can be reduced and the weight of the material and battery box can be reduced. With the invention or discovery of new materials, safer and more environmentally friendly materials can be selected to develop and produce safer, comfortable, beautiful and environmentally friendly air droplet virus filtering and disinfection masks. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the filtering structure of the present invention;

[0030] Figure 3 This is a schematic diagram of the nose tip air guide structure of the present invention being extended;

[0031] Figure 4 This is a schematic diagram of the retraction of the nose tip air guide structure of the present invention;

[0032] Figure 5 Schematic diagram of the structure of the oronasal mask of the present invention;

[0033] Figure 6 Schematic diagram of the eye protection structure of the present invention;

[0034] Figure 7 Schematic diagram of the lower belt structure of the present invention;

[0035] Figure 8 Schematic diagram of the upper belt structure of the present invention;

[0036] 1-Main body; 2-Virus elimination lamp; 3-Virus filter membrane; 4-Pressure plate; 5-Light shield; 6-External power supply box; 7-Wire; 8-Main airway body; 9-Nasal airway bayonet; 10-Oronasal mask airway bayonet; 11-Airway tube switching valve; 12-Oronasal mask airway channel; 13-Nasal airway channel; 14-Bendable pipe joint; 15-Strap fixing ring; 16-Left and right connecting plates; 17-Switch valve knob; 18-Short cylinder; 19-Oronasal mask; 20-Sealing pad; 21-Oronasal mask gas duct; 22-Oronasal mask airway interface; 23-Nasal breathing plug; 24-Airway hose; 25-Airway hard tube; 26-Nasal airway interface; 27-Upper strap; 28-Lower strap; 29-Pressure ring; 30- Rotating axis; 31-connecting belt; 32-opening; 33-goggles; 34-hinge. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0038] Example 1

[0039] like Figures 1 to 8 As shown in the figure, a mask for filtering and disinfecting air droplet viruses and bacteria includes two main bodies 1, which are connected by left and right connecting plates 16, and the corresponding surfaces of the two main bodies 1 are detachably connected with nasal air guide structures, and the bottom ends of the main bodies 1 are detachably connected with an oronasal mask air guide structure, and the main bodies 1 are fixed to the user's face by fixed straps, and the bottom ends of the left and right connecting plates 16 are installed with eye protection structures for protecting the eyes. The interior of the main body 1 is provided with a virus filtering and disinfecting chamber for disinfecting viruses, and the interior of the main body 1 is provided with a switching unit for adjusting the connectivity between the nasal air guide structure and the oronasal mask air guide structure.

[0040] In the technical solution of the present application, the main body 1 is fixed to the face of the user by a fixed strap, and then a virus filtering and eliminating chamber is provided inside the main body 1, and the viruses entering the air flow are eliminated by the virus filtering and eliminating chamber, thereby ensuring the cleanliness of the air flow inhaled by the human body in the later period. At the same time, an oral and nasal mask air guide structure and a nasal air guide structure suitable for different scenarios are provided, so that the user can operate through the switching unit according to the needs of use, thereby changing the air guide state of the oral and nasal mask air guide structure and the nasal air guide structure. At the same time, an eye protection structure for protecting the eyes is provided, so that the whole can filter and eliminate viruses and bacteria in the exhaled and inhaled gas of the wearer, and effectively defend against airborne viruses and bacteria when in a crowded area. When dining, speaking in a meeting, etc. in a public place, the oral and nasal mask breathing mode of the mask is switched to the nasal airway breathing mode, and nasal breathing is used instead, which can improve the defense ability against airborne viruses and bacteria and reduce the risk of virus and bacterial transmission and infection.

[0041] Example 2

[0042] like Figures 1 to 5As shown in , on the basis of Example 1, the bottom end of the main body 1 is provided with a main trachea body 8, and the bottom end of the virus filtering and clearing bin is detachably installed on the top end of the main trachea body 8. The structure of the virus filtering and clearing bin corresponds to the structural setting of the main trachea body 8. The top end of the main trachea body 8 is inserted into the interior of the virus filtering and clearing bin, and the inner wall of the virus filtering and clearing bin is tangent to the outer wall of the main trachea body 8. A cushion can be added between the inner wall of the virus filtering and clearing bin and the outer wall of the main trachea body 8, thereby ensuring that the main trachea body 8 and the virus filtering and clearing bin not only have good sealing, but also are convenient for disassembly operations. The main trachea body 8 and the virus filtering and clearing bin can be connected in a snap-fit ​​manner, thereby facilitating the removal of the main trachea body 8. The light shielding plates 5 are arranged above the junction of the main trachea body 8 and the virus filtering and clearing bin, and the virus filtering and clearing bin is separated to facilitate the replacement of the virus filtering membrane 3. The interior of the virus filtering and clearing bin is sequentially distributed with a light shielding plate 5, a virus filtering membrane 3 and a virus clearing lamp bead 2 from top to bottom. The virus clearing lamp bead 2 is arranged above the junction of the main trachea body 8 and the virus filtering and clearing bin. The light shielding plates 5 are arranged in a staggered manner. The virus clearing lamp bead 2 is connected to an external power supply box 6 through a wire 7. The virus clearing lamp bead 2 is arranged as a deep ultraviolet lamp bead, and the main body 1 around the virus clearing lamp bead 2 is set as a light-proof structure. A channel for airflow is provided between the staggered light shielding plates 5, which can effectively prevent the ultraviolet rays generated by the virus clearing lamp bead 2 from being illuminated from the top position of the virus filtering and clearing bin.

[0043] A circular plate is installed at the position of the virus filter membrane 3 inside the virus filtration and elimination bin, and a pressure plate 4 for installing the virus filter membrane is provided at the bottom end of the circular plate. A groove for clamping the pressure plate 4 is opened at the bottom end of the circular plate. By pressing the pressure plate 4 into the groove, the virus filter membrane 3 is fixed in the virus filtration and elimination bin. The virus filter membrane 3 is made of carbon nanofiber filter membrane or graphene filter membrane, so that the virus filter membrane 3 not only has good filtering properties, but also can adsorb dust.

[0044] The switching unit includes an airway switching valve 11 arranged below the virus filter membrane 3, and a transfer shaft is provided inside the airway switching valve 11, and the transfer shaft passes through and extends to the outside of the main airway body 8 and is connected to a switching valve knob 17. The airway switching valve 11 is driven to rotate by the switching valve knob 17, thereby controlling the connectivity between the oronasal mask airway channel 12 and the nasal airway channel 13. A nasal airway channel 13 is provided inside the main airway body 8 below one side of the airway switching valve 11, and a nasal airway bayonet 9 is installed inside the nasal airway channel 13. An oronasal mask airway channel 12 is provided inside the main airway body 8 on the other side of the airway switching valve 11, and a pipe bendable joint 14 is provided on the main airway body 8 below the switching unit, which facilitates bending of the main airway body 8, thereby facilitating fixing operation, and an oronasal mask airway bayonet 10 is provided at the bottom end of the main body 1.

[0045] The nasal air guide structure includes an air guide rigid tube 25, and a nasal air guide interface 26 is provided on the side of the air guide rigid tube 25 at the position corresponding to the nasal air guide bayonet 9. An air guide hose 24 is slidably installed inside the air guide rigid tube 25, and a nasal breathing plug 23 is installed on the top of the air guide hose 24. When needed, the air guide hose 24 is pulled out from the inside of the air guide rigid tube 25 through the nasal breathing plug 23, and then the nasal breathing plug 23 is inserted into the nasal cavity.

[0046] The oronasal mask air guide structure includes an oronasal mask 19, a sealing pad 20 is provided at the edge of the oronasal mask 19, an oronasal mask gas duct 21 is provided on the side of the oronasal mask 19, and an oronasal mask air guide interface 22 is provided on the oronasal mask gas duct 21 at a position corresponding to the oronasal mask air guide bayonet 10. The oronasal mask air guide interface 22 is connected to the oronasal mask air guide bayonet 10, and then the oronasal mask 19 is fixed at the position of the mouth and nose, thereby facilitating oronasal breathing operations.

[0047] Example 3

[0048] like Figures 6 to 8 As shown in , on the basis of Example 2, the eye protection structure includes goggles 33, and the top ends of the goggles 33 are fixed to the left and right connecting plates 16 by hinges 34, which facilitates the flipping operation of the goggles 33, that is, the eye protection operation when in use is realized, and the flipping and folding operation when not in use is realized. The eye mask body is designed according to the contours of the eyes, head and face, and the two sides of the eye mask body are connected to the outer wall of the main trachea, and the upper part of the eye mask body is connected to the left and right connecting plates. The length of the eye mask flip axis is shortened as much as possible to facilitate the flipping of the arc-shaped eye mask body. The eye mask body and the flip axis are both detachable. The eye mask plays a role in blocking air droplets and preventing droplet viruses from infecting the eyes, and can play a role in protecting against viruses to a certain extent.

[0049] The fixing strap includes an upper strap 27 and a lower strap 28. A strap fixing ring 15 is installed at the top side of the main tracheal body 8 corresponding to the position of the upper strap 27. The upper strap 27 is fixed in the fixing ring 15 by a pressure ring 29. Figure 7 As shown in , it is convenient to fix the whole body at the top of the user's head.

[0050] Both ends of the lower strap 28 are equipped with a pressure ring 29, and both sides of the lower strap 28 are connected to a connecting belt 31 through a rotating shaft 30. The connecting belt 31 has openings 32. A short cylinder 18 is installed at the position corresponding to the connecting belt 31 on the main airway body 8. The lower strap 28 is as shown in FIG. Figure 8 As shown in the figure, the opening 32 is clamped at the position of the short cylinder 18, thereby achieving the connection between the lower strap 28 and the main trachea body 8, and then the two pressure rings 29 are connected and put on the position outside the oronasal mask 19 to fix the oronasal mask 19 to prevent it from falling off.

[0051] During use: When taking public transportation, such as high-speed trains, airplanes, or buses, there may be a risk of infection from airborne viruses or bacteria in confined spaces. In such situations, a mask that filters and disinfects airborne viruses and bacteria is suitable. Before entering a public place, put on the charged and assembled mask and turn it on. Switch to oronasal breathing mode, then enter public transportation and breathe normally. If viruses or bacteria are present in the airborne droplets, they are first filtered through the mask's disinfection chamber, blocking over 99% of them. These blocked viruses or bacteria are then disinfected at close range by deep ultraviolet light, achieving a disinfection rate of over 99.99%. The filtered air enters the oronasal mask through the main airway, virtually free of viruses and bacteria, greatly reducing the risk of infection. If the exhaled gas of the mask wearer contains viruses or bacteria, the exhaled gas will first be filtered through the filter membrane of the mask's disinfection chamber, blocking more than 99% of the viruses or bacteria. The blocked viruses or bacteria are then also disinfected by deep ultraviolet light at close range, with a disinfection rate of more than 99.99%. The gas that passes through the disinfection chamber is a safe gas that contains almost no viruses and bacteria, greatly reducing the possibility of viruses and bacteria spreading in confined spaces. The mask can also switch between oral and nasal mask and nasal airway breathing mode. When eating or drinking on public transportation, switching from oral and nasal mask breathing mode to nasal airway breathing mode can greatly reduce the risk of virus or bacteria transmission in such special scenarios.

[0052] When you need to attend meetings, dinners and other activities, there may also be a risk of infection by viruses or bacteria in air droplets in a confined space. This scenario is also suitable for wearing a mask that filters and kills air viruses and bacteria. Before entering a public place, wear the charged and assembled mask, turn on the mask power, switch to the oral and nasal mask breathing mode, and then enter the public place and breathe normally. According to the mode of Example 1, disinfect viruses or bacteria in the gas. When you need to eat, drink water, or speak at a meeting during the above activities, it is not convenient to use the oral and nasal mask breathing mode. You need to remove the oral and nasal mask, switch to the nasal airway breathing mode, and then change to the nasal breathing mode. If there are viruses or bacteria in the air droplets, the air droplets will first be filtered by the filter membrane of the mask disinfection chamber, and more than 99% of the viruses or bacteria will be blocked. Then, the blocked viruses or bacteria will also be disinfected at close range by deep ultraviolet light, and the disinfecting rate can reach more than 99.99%. The filtered air enters the nasal airway through the main airway duct. There are almost no viruses and bacteria in the gas, which greatly reduces the risk of infection by viruses or bacteria. If the exhaled gas of the mask wearer contains viruses or bacteria, when the exhaled gas passes through the filter membrane of the mask's disinfection chamber, more than 99% of the viruses or bacteria are blocked. The blocked viruses or bacteria are then disinfected at close range by deep ultraviolet light, with a disinfection rate of more than 99.99%. The gas exhaled after passing through the disinfection chamber is almost free of viruses and bacteria, greatly reducing the possibility of viruses and bacteria spreading in confined spaces. In crowded places, the mask's oral and nasal mask breathing mode and nasal airway breathing mode are alternately switched to reduce the risk of virus and bacteria transmission in different scenarios, making the inhalation and exhalation of the mask wearer safer, cutting off the transmission path of viruses and bacteria, and minimizing the possibility of the spread of viruses or bacteria from the source of infection.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A mask for filtering and disinfecting airborne viruses and bacteria, comprising two main bodies (1), characterized in that: The two main bodies (1) are connected by left and right connecting plates (16), and the corresponding surfaces of the two main bodies (1) are detachably connected with a nasal air guide structure, and the bottom end of the main body (1) is detachably connected with an oral and nasal mask air guide structure, and the main body (1) is fixed to the user's face by a fixing strap, and the bottom ends of the left and right connecting plates (16) are equipped with an eye protection structure for protecting the eyes, and the top end of the internal part of the main body (1) is provided with a virus filtering and clearing chamber for disinfecting viruses, and the inside of the main body (1) is provided with a switching unit for adjusting the connectivity between the nasal air guide structure and the oral and nasal mask air guide structure; The bottom end of the main body (1) is provided with a main tracheal tube body (8), the bottom end of the virus filtering and clearing chamber is detachably mounted on the top end of the main tracheal tube body (8), and the interior of the virus filtering and clearing chamber is sequentially provided with a light shielding plate (5), a virus filtering membrane (3) and a virus clearing lamp bead (2) from top to bottom, the light shielding plate (5) is arranged in a staggered distribution, and the virus clearing lamp bead (2) is connected to an external power supply box (6) via a wire (7); The switching unit includes an airway switching valve (11) arranged below the virus filter membrane (3), a transfer shaft is arranged inside the airway switching valve (11), and the transfer shaft passes through and extends to the outside of the main airway body (8) and is connected to a switching valve knob (17), a nasal airway channel (13) is arranged inside the main airway body (8) below one side of the airway switching valve (11), a nasal airway bayonet (9) is installed inside the nasal airway channel (13), an oral and nasal mask airway channel (12) is arranged inside the main airway body (8) on the other side of the airway switching valve (11), a pipe bendable joint (14) is arranged on the main airway body (8) below the switching unit, and an oral and nasal mask airway bayonet (10) is arranged at the bottom end of the main body (1).

2. A mask for filtering and disinfecting airborne viruses and bacteria according to claim 1, characterized in that: A return plate is installed at a position corresponding to the virus filter membrane (3) inside the virus filtration and elimination chamber, and a pressure plate (4) for installing the virus filter membrane is provided at the bottom end of the return plate. The virus filter membrane (3) is made of a carbon nanofiber filter membrane or a graphene filter membrane.

3. A mask for filtering and disinfecting airborne viruses and bacteria according to claim 1, characterized in that: The nasal air guide structure comprises an air guide hard tube (25), a nasal air guide interface (26) is provided on the side of the air guide hard tube (25) at a position corresponding to the nasal air guide bayonet (9), an air guide hose (24) is slidably installed inside the air guide hard tube (25), and a nasal breathing plug (23) is installed at the top end of the air guide hose (24).

4. A mask for filtering and disinfecting airborne viruses and bacteria according to claim 1, characterized in that: The oronasal mask air guide structure comprises an oronasal mask (19), a sealing pad (20) is provided at the edge of the oronasal mask (19), an oronasal mask gas duct (21) is provided on the side of the oronasal mask (19), and an oronasal mask air guide interface (22) is provided on the oronasal mask gas duct (21) at a position corresponding to the oronasal mask air guide bayonet (10).

5. A mask for filtering and disinfecting airborne viruses and bacteria according to claim 1, characterized in that: The eye protection structure comprises goggles (33), and the top ends of the goggles (33) are fixed to the left and right connecting plates (16) via hinges (34).

6. A mask for filtering and disinfecting airborne viruses and bacteria according to claim 1, characterized in that: The fixing strap comprises an upper strap (27) and a lower strap (28); a strap fixing ring (15) is installed at a position on the top side surface of the main trachea body (8) corresponding to the position of the upper strap (27); and the upper strap (27) is fixed in the fixing ring (15) by a pressure ring (29).

7. A mask for filtering and disinfecting airborne viruses and bacteria according to claim 6, characterized in that: Both ends of the lower strap (28) are equipped with pressure rings (29), both sides of the lower strap (28) are connected to connecting straps (31) via rotating shafts (30), openings (32) are distributed on the connecting straps (31), and a short cylinder (18) is installed at a position corresponding to the connecting strap (31) on the main airway body (8).

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