CN220025920U - A self-purifying protective mask for port operations - Google Patents

Abstract

The utility model provides a self-purification protective mask for port operation, which is characterized in that: the nose pad comprises a face seal ring, an eye seal ring, a nose pad, a first air processor, a second air processor, goggles, a first elastic belt and a second elastic belt; face seal sets up in the face guard outer lane, and the goggles setting is in face guard upper portion, and the eye sealing washer nestification is provided with the nose under the goggles and holds in the palm, and nose holds in the palm below left side and sets up first air processor, and nose holds in the palm below right side and sets up second air processor, and face guard's upper portion is provided with first elastic webbing, and face guard's lower part is provided with the second elastic webbing. The filter screen in the air processor in the protective mask can filter large particle pollutants in the externally polluted air, and residual new coronavirus, influenza virus, dust, PM2.5 and the like in the air are effectively filtered through the power generation disinfection layer and the active carbon layer after being filtered by the filter screen, and finally are filtered again through the melt-blown cloth layer.

Description

A self-purifying protective mask for port operations

Technical field

The utility model relates to the technical fields of safety protection and high-efficiency filtration. More specifically, the utility model relates to a self-purifying protective mask used for port operations.

Background technique

Triboelectric nanopower generation technology has become increasingly mature. Its open circuit voltage and short circuit current have increased from a few volts (V) and a few nanoamps (nA) at the beginning. After years of development, the open circuit voltage has reached tens of thousands of V, and even the short circuit current has reached the level of A. . The application field of triboelectricity has expanded from converting energy in the natural environment to the field of protection. Triboelectricity has been used to extend the filtration time of masks (see literature: (PENG Z, SHI J, XIAO X, et al. al.Self-charging electrostatic face masks leveraging triboelectrification forprolonged air filtration[J].Nature Communications,2022,13(1):7835.)(HAO R,YANG S,YANG K,et al.Self-powered air filter based on an electrospunrespiratory triboelectric nanogenerator[J].ACS Applied Energy Materials, 2021,4(12):14700-8.)), using triboelectricity on masks for sterilization (see literature: WANG L, BIAN Y, LIM C K, etal .Tribo-charge enhanced hybrid air filter masks for efficient particulatematter capture with greatly extended service life[J].Nano Energy, 2021,85:106015.), showing broad application prospects.

As a major country in import and export trade, my country has a large number of import and export volumes and personnel exchanges at the terminal every day, and infections of the new coronavirus and influenza virus occur from time to time. In addition, there is a lot of dust during daily loading and unloading operations at terminals such as bulk cargo, which also causes certain damage to the health of workers. In order to reduce the physical harm caused by viruses and dust to dock workers, dock workers in some positions are required to wear protective masks when working. However, in the existing technology, the protective masks and the human face are only partially in contact with each other rather than sealed. There is a gap between the edge of the protective mask and the face, allowing viruses or dust to enter the inside of the protective mask in the form of saliva or aerosol. At the same time, the existing protection technology only relies on replacing the filter element to increase the protective effect, but during long-term work , replacing the filter element is troublesome and increases the chance of virus infection and dust inhalation, so it needs to be improved and optimized.

In view of the current needs in the field of safety protection in ports and terminals, there is an urgent need to invent a self-purifying protective mask for port operations that can be used for a long time without significantly weakening the protective effect. This utility model is constructed based on a protective mask and an air processor. The protective mask is sealed with the face through an elastic band and a facial sealing ring to prevent harmful gases in the air from entering the mask; the filter inside the air processor will filter large particles of pollutants in the externally polluted air. The remaining new coronavirus, influenza virus, dust and PM2.5 in the air are effectively filtered through the power generation disinfection layer and activated carbon layer, and finally the unfiltered new coronavirus, influenza virus, dust and PM2 are filtered through the filtration function of the melt-blown cloth layer. .5 and so on to filter again.

Utility model content

The utility model includes a protective mask and an air handler. The protective mask mentioned in the utility model includes a facial sealing ring, an eye sealing ring, a nose pad, a first air handler, a second air handler, goggles, a first elastic band and a second elastic band. The facial sealing ring is set on the outer ring of the protective mask, the goggles are set on the upper part of the protective mask, the eye sealing ring is nested in the goggles, a nose pad is set directly below the goggles, and a first air handler is set on the left side below the nose pad. A second air processor is provided on the right side below the support, a first elastic band is provided on the upper part of the protective mask, and a second elastic band is provided on the lower part of the protective mask.

The air handler mentioned in the present utility model is provided with a filter screen, a first power generation sterilization layer, a second power generation sterilization layer, an activated carbon layer and a melt-blown cloth layer in sequence. The first air handler and the second air handler are connected to the protective mask through threaded fit, and are easy to replace. The top of the air handler is provided with a filter, and the inside of the filter is provided with a first power generation sterilization layer and a second power generation sterilization layer. The bottom of the air handler is provided with a melt-blown cloth layer, between the second power generation sterilization layer and the melt-blown cloth layer. There are activated carbon layers between them, and there are gaps between each filtering and disinfecting layer inside the air processor to make the filtration more complete. The air handler is an independent device. When the purification capability of the air handler cannot meet the protection requirements, the air handler needs to be replaced.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of the utility model.

Figure 2 is a schematic diagram of the internal structure of the present utility model.

Figure 3 is a schematic structural diagram of the air handler of the present utility model.

Figure 4 is a schematic diagram of the principle of the power generation disinfection layer of this utility model.

Explanation of drawing number:

1. Facial sealing ring; 2. Protective mask; 3. Eye sealing ring; 4. Nose pads;

5. First air handler; 6. Second air handler; 7. Goggles; 8. First elastic band;

9. Second elastic belt; 10. Filter; 11. First power generation disinfection layer; 12. Second power generation disinfection layer;

13. Activated carbon layer; 14. Melt-blown cloth layer.

Detailed ways

The technical solution of the present utility model will be introduced in detail below with reference to the drawings and embodiments.

As shown in Figure 1-2, a schematic diagram of the overall structure of the utility model, the protective mask 2 includes a facial sealing ring 1, an eye sealing ring 3, a nose pad 4, a first air handler 5, a second air handler 6, and goggles. 7. The first elastic band 8 and the second elastic band 9. The facial sealing ring 1 is arranged on the outer ring of the protective mask 2. The upper part of the protective mask 2 is provided with goggles 7. The eye sealing ring 3 is nested on the goggles 7. A nose pad 4 is provided directly below the goggles 7 and below the nose pad 4. A first air handler 5 is provided on the left side, and a second air handler 6 is provided on the right side below the nose pad 4. The first air handler 5 and the second air handler 6 are respectively connected to the protective mask 2 through threaded fit. The protective mask The upper part of the protective mask 2 is provided with a first elastic band 8, and the lower part of the protective mask 2 is provided with a second elastic band 9.

As shown in Figure 3, it is a schematic structural diagram of the air handler of the present utility model. The air handler includes a filter 10, a first power generation sterilization layer 11, a second power generation sterilization layer 12, an activated carbon layer 13, and a melt-blown cloth layer 14. The top of the air handler is provided with a filter screen 10. The inside of the filter screen 10 is provided with a first power generation sterilization layer 11 and a second power generation sterilization layer 12. The bottom of the air handler is provided with a meltblown cloth layer 14 and a second power generation sterilization layer 12. There is an activated carbon layer 13 between the melt-blown cloth layer 14 and gaps between the filtration and disinfection layers inside the air processor, so that the new coronavirus, influenza virus, dust and PM2.5 can be filtered more fully. The air handler is an independent device. When the purification capability of the air handler cannot meet the protection requirements, the air handler needs to be replaced.

As shown in Figure 4, which is a schematic diagram of the principle of the power generation disinfection layer of the present utility model, the material of the first power generation disinfection layer 11 is any polypropylene non-woven fabric layer, polyimide non-woven fabric layer, polytetrafluoroethylene non-woven fabric layer, etc. One, the material of the second power generation disinfection layer 12 is polyamide non-woven fabric. The electronegativity of the material of the first power generation disinfection layer 11 and the material of the second power generation disinfection layer 12 is very different. When the two materials are in contact and separated, due to the principle of contact electrification, the two materials will carry opposite charges respectively, forming a potential difference. Use electrostatic adsorption to filter the new coronavirus, influenza virus, dust and PM2.5 that are not filtered by the filter.

The structure and working process of a self-purifying protective mask for port operations are described below. The protective mask 2 includes a facial sealing ring 1, an eye sealing ring 3, a nose pad 4, a first air handler 5, a second air Processor 6, goggles 7, first elastic band 8 and second elastic band 9. The facial sealing ring 1 is arranged on the outer ring of the protective mask 2. The upper part of the protective mask 2 is provided with an eye sealing ring 3. The eye sealing ring 3 is nested in the goggles 7. The eye sealing ring 3, the goggles 7 and the corresponding face The area forms a closed space, a nose pad 4 is provided directly below the goggles 7, a first air handler 5 is provided on the left side below the nose pad 4, a second air handler 6 is provided on the right side below the nose pad 4, and the first air handler 5 The second air handler 6 and the second air handler 6 are respectively connected to the protective mask 2 through threaded fit. The upper part of the protective mask 2 is provided with a first elastic band 8, and the lower part of the protective mask 2 is provided with a second elastic band 9. A filter screen 10 is provided on the top of the first air handler 5 and the second air handler 6. A first power generation sterilization layer 11 and a second power generation sterilization layer 12 are provided inside the filter screen 10. A melt-blown layer is provided on the bottom of the air handler. There is an activated carbon layer 13 between the cloth layer 14, the second power generation sterilization layer 12 and the melt-blown cloth layer 14. There are gaps between the filtering and sterilizing layers inside the air processor, so that the new coronavirus, influenza virus, dust and PM2. 5. Wait for more complete filtration.

The protective mask 2 forms a seal with the face through the facial sealing ring 1, the first elastic band 9 and the second elastic band 10, which can effectively prevent gases and particles harmful to the human body in the air from entering the inside of the mask. The nose pads 4 make the protective mask 2 and the face A closed space is formed between the two parts to store air, allowing for more adequate ventilation. The first power generation sterilization layer 11 and the second power generation sterilization layer 12 have been fixedly installed before use. When wearing the protective mask 2, it will cause the protective mask 2 to shake. The shaking will cause the first power generation sterilization layer 11 and the second power generation sterilization layer 11. There will be contact and separation between the power generation disinfection layers 12. The electronegativities of the two materials are very different. Due to the principle of contact electrification, charges are generated and a potential difference is formed. The amount of charge generated by shaking the protective mask 2 at one time is about 1nC. After the user wears the protective mask 2, the large particle pollutants in the external polluted air are filtered through the filter 10, and the first power generation disinfection layer 11 and the second power generation disinfection layer 12 are contacted and separated through breathing. Based on the principle of electricity, a potential difference will be formed between the first power generation disinfection layer 11 and the second power generation disinfection layer 12, and electrostatic adsorption is used to filter the new coronavirus, influenza virus, dust and PM2.5 that are not filtered by the filter; secondly, The adsorption effect of the activated carbon layer 13 is used to effectively filter the new coronavirus, influenza virus, dust and PM2.5 in the air, and finally the unfiltered new coronavirus, influenza virus, dust and PM2.5 are filtered through the melt-blown cloth layer 14 Filter again. At the same time, when the user wears the protective mask 2 and breathes, the first power generation sterilization layer 11 and the second power generation sterilization layer 12 are contacted and separated to generate charges, and charges can be continuously generated during the working process of the user wearing the protective mask 2; The filter 10 filters large particle pollutants in the externally polluted air. The electrostatic adsorption formed by the contact separation between the first power generation sterilization layer 11 and the second power generation sterilization layer 12 and the adsorption of the activated carbon layer 13 affect the air. The new coronavirus, influenza virus, dust and PM2.5 in the filter are effectively filtered, and finally the unfiltered new coronavirus, influenza virus, dust and PM2.5 are filtered through the melt-blown cloth layer 14. Therefore, the protective mask 2 can continuously filter large particle pollutants in the air when used for a long time, effectively filter the new coronavirus, influenza virus, dust and PM2.5 in the air, and always maintain a relatively high level. purification efficiency. The eye seal 3, the goggles 7 and the corresponding eye area form a closed space. When the user uses the protective mask 2, the water mist generated by exhalation will not affect the goggles 7. The air handler is an independent device. The air handler is connected to the protective mask 2 through a threaded fit. It is easy to replace. When the purification effect of the air handler cannot meet the protection requirements, the air handler can be replaced.

Claims (7)

1. A self-purification protective face guard for harbour operation, its characterized in that: the nose pad comprises a face seal ring, an eye seal ring, a nose pad, a first air processor, a second air processor, goggles, a first elastic belt and a second elastic belt; face seal sets up in the face guard outer lane, and the goggles setting is in face guard upper portion, and the eye sealing washer nestification is provided with the nose under the goggles and holds in the palm, and nose holds in the palm below left side and sets up first air processor, and nose holds in the palm below right side and sets up second air processor, and face guard's upper portion is provided with first elastic webbing, and face guard's lower part is provided with the second elastic webbing.

2. A self-cleaning protective mask for port operations according to claim 1, wherein: the first air processor and the second air processor are internally provided with a filter screen, a first power generation disinfection layer, a second power generation disinfection layer, an activated carbon layer and a melt-blown cloth layer in sequence.

3. A self-cleaning protective mask for port operations according to claim 1 or 2, characterized in that: the first air processor and the second air processor are connected to the protective mask through threaded fit, so that the protective mask is easy to replace; gaps are reserved among all parts in the first air processor and the second air processor, so that the filtration is more sufficient; the air handler is a stand-alone device that needs to be replaced when the air handler's purification capability fails to meet the protection requirements.

4. A self-cleaning protective mask for port operations according to claim 3, wherein: the first power generation disinfection layer is made of any one of a polypropylene non-woven fabric layer, a polyimide non-woven fabric layer and a polytetrafluoroethylene non-woven fabric layer, and the second power generation disinfection layer is made of polyamide non-woven fabric; the electronegativity of the first power generation sterilizing layer material and the electronegativity of the second power generation sterilizing layer material are large, opposite charges are carried respectively when the first power generation sterilizing layer material and the second power generation sterilizing layer material are contacted and separated, potential difference is formed, and the electrostatic adsorption is utilized to filter unfiltered new coronaviruses, influenza viruses, dust and PM2.5 of the filter screen.

5. A self-cleaning protective mask for port operations according to claim 2 or 4, wherein: when the protective mask is worn, the protective mask can shake, the first power generation disinfection layer and the second power generation disinfection layer can be separated by contact, the electronegativity of the two materials is greatly different, electric charges are generated, potential difference is formed, and the electric charge amount generated once the protective mask is shaken is 1nC.

6. A self-cleaning protective mask for port operations according to claim 5, wherein: after a user wears the protective mask, large particle pollutants in externally polluted air are filtered through a filter screen, the first power generation disinfection layer and the second power generation disinfection layer are contacted and separated through respiration, potential difference is formed between the first power generation disinfection layer and the second power generation disinfection layer, and new coronavirus, influenza virus, dust and PM2.5 which are not filtered by the filter screen are filtered through electrostatic adsorption; and secondly, effectively filtering the new coronavirus, influenza virus, dust and PM2.5 in the air by utilizing the adsorption effect of the activated carbon layer, and finally, filtering the unfiltered new coronavirus, influenza virus, dust and PM2.5 again by using the melt-blown cloth layer.

7. A self-cleaning protective mask for port operations according to claim 6, wherein: when a user wears the protective mask to breathe, the first power generation disinfection layer and the second power generation disinfection layer are contacted and separated to generate charges, and charges can be continuously generated in the working process of wearing the protective mask by the user; the large particle pollutants in the externally polluted air are filtered through the filter screen, the new coronavirus, influenza virus, dust and PM2.5 in the air are effectively filtered through the electrostatic adsorption effect formed by contact separation between the first power generation disinfection layer and the second power generation disinfection layer and the adsorption effect of the active carbon layer, and finally the unfiltered new coronavirus, influenza virus, dust and PM2.5 are filtered again through the melt-blown cloth layer.