A smart air-supply protective mask

Abstract

This invention discloses a smart air-supply protective mask, comprising: a first air supply device or a second air supply device, and a mask body; the first air supply device or the second air supply device is replaceably connected to the mask body; the first air supply device includes a first air supply channel; a first solenoid valve is provided at the air inlet end of the first air supply channel, and the air outlet end of the first air supply channel is detachably connected to the air inlet of the mask body; a pressure sensing control box and a pressure relief outlet are connected through the first air supply channel, and a second solenoid valve is provided at the pressure relief outlet; the pressure sensing control box is controlled and connected to the first solenoid valve and the second solenoid valve.

Description

Technical Field

[0001] This invention relates to the field of respiratory protection equipment technology, and in particular to a smart air-supply protective mask. Background Technology

[0002] With the continuous improvement of people's living standards and the enhancement of health awareness, respiratory protective equipment has become a necessity in people's lives. Especially during the COVID-19 pandemic that broke out in 2020, masks became a hot topic of social concern. There are many types of masks, and medical protective masks are currently the most widely used type in hospitals.

[0003] Existing protective masks, when used in negative pressure environments, can cause oxygen deficiency in wearers due to insufficient air intake caused by the pressure difference. Furthermore, for groups with high air quality requirements (such as medical personnel), not only are masks necessary for protection, but also air supply devices are needed to prevent dizziness and breathing difficulties caused by oxygen deficiency. Therefore, this application proposes a protective mask with intelligent air supply. Summary of the Invention

[0004] One embodiment of this specification provides a smart air-supply protective mask, comprising: a first air supply device or a second air supply device, and a mask body; the first air supply device or the second air supply device is replaceably connected to the mask body; the first air supply device includes a first air supply channel; a first solenoid valve is provided at the air inlet end of the first air supply channel, and the air outlet end of the first air supply channel is detachably connected to the air inlet of the mask body; a pressure sensing control box and a pressure relief outlet are connected through the first air supply channel, and a second solenoid valve is provided at the pressure relief outlet; the pressure sensing control box is controlled and connected to the first solenoid valve and the second solenoid valve.

[0005] In some embodiments, the first gas supply device further includes a housing, and the first gas supply channel is disposed within the housing; the housing also contains a lithium battery, a charge-discharge-lift integrated circuit controller, and a gas delivery circuit control integrated board; the lithium battery and the charge-discharge-lift integrated circuit controller are connected by wires, the output terminal of the charge-discharge-lift integrated circuit controller is connected to the input terminal of the pressure sensing control box by wires, the output terminal of the pressure sensing control box is connected to the input terminals of the first solenoid valve and the gas delivery circuit control integrated board respectively, and the input terminal of the second solenoid valve is connected to the output terminal of the gas delivery circuit control integrated board by wires.

[0006] In some embodiments, the second air supply device includes a second air supply channel and a third air supply channel; a miniature air pump is connected between the air inlet and the air outlet of the second air supply channel, and the air inlet of the second air supply channel is an air interface; an intermittent air supply box is connected between the air inlet and the air outlet of the third air supply channel, and the air inlet of the third air supply channel is an oxygen interface; the air outlets of the second and third air supply channels are detachably connected to the air inlet of the mask body.

[0007] In some embodiments, the second air supply device further includes a housing, the second air supply channel and the third air supply channel are disposed within the housing; a cover plate is rotatably connected to the upper surface of the housing, at least two fixing clips are provided at the top corner of the lower surface of the housing, and at least one bandage is connected to each of the two side edges of the housing.

[0008] In some embodiments, each endoscope body further includes a handle, a third solenoid valve is provided on the third air supply channel in the intermittent air supply box, a control panel and an electronic timer are provided on the inner side of the intermittent air supply box, the output terminal of the electronic timer is electrically connected to the input terminal of the control panel, and the control panel and the third solenoid valve are connected by a wire.

[0009] In some embodiments, the mask body includes a cup body; the inner side of the cup body is divided into an inhalation chamber and an exhalation chamber by a partition, and ventilation holes are correspondingly opened on both sides of the partition. The surface of the inhalation chamber is provided with a plurality of inhalation holes, and a breathing valve is provided at the exhalation chamber. A gas connector is provided at the bottom of the exhalation chamber, and air inlets are respectively provided on both sides of the outer surface of the gas connector. The air inlets are respectively connected to a first air outlet pipe and a second air outlet pipe provided on both sides of the inner surface of the gas connector. The first air outlet pipe and the second air outlet pipe are respectively connected to the ventilation holes on both sides of the partition.

[0010] In some embodiments, a silicone sealing ring is provided on the outer side of the cup body, and a flexible sealing strip adapted to the partition is provided on the silicone sealing ring.

[0011] In some embodiments, a first groove is provided on the outer side of the cup body corresponding to the air intake chamber. A first card plate is detachably installed in the first groove. A plurality of air intake holes are provided in the first groove and the first card plate respectively. A filter sheet is provided between the first groove and the first card plate.

[0012] In some embodiments, the gas connector also has a water pipe through hole, and a silicone plug is provided at the port of the water pipe through hole.

[0013] In some embodiments, wearing and fixing devices are provided on both sides of the cup body, and the surface of the wearing and fixing device is provided with a connecting hole, and a wearing cord is provided in the connecting hole.

[0014] Compared with existing technologies, the beneficial effects of this invention are as follows: The protective micro-pressure air supply system designed in this invention can achieve intelligent oxygen supply and intelligent control operation for protective oxygen masks during actual operation. It can provide intermittent or continuous oxygen supply, reducing oxygen waste. Moreover, it can detect the air pressure in the oxygen supply pipeline in real time to ensure positive pressure and sufficient air supply in the oxygen mask's inhalation chamber. When the air pressure is too high, the oxygen supply is stopped in time and a pressure relief operation is implemented to ensure its safety. When the air pressure is too low, the oxygen supply solenoid valve is opened to realize oxygen supply. The automated operation does not require constant attention from staff, improving the protectiveness and oxygen intake efficiency of the protective oxygen mask, thereby providing strong support and health protection for medical staff working in negative pressure environments. Attached Figure Description

[0015] This specification will be further described by way of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not limiting; in these embodiments, the same reference numerals denote the same structures, wherein: Figure 1 This is a structural schematic diagram of a smart air-supply protective mask according to some embodiments of this application; Figure 2 This is a diagram of an intelligent control system for a first gas supply device according to some embodiments of this application; Figure 3 This is a schematic diagram of the structure of a second gas supply device according to some embodiments of this application; Figure 4 This is a schematic diagram of the structure of a second gas supply device according to some embodiments of this application; Figure 5 This is a schematic diagram of the structure of an air filter box according to some embodiments of this application; Figure 6 This is a structural schematic diagram of an intermittent gas supply box according to some embodiments of this application; Figure 7 This is a schematic diagram of the structure of a mask body according to some embodiments of this application; Figure 8 This is a schematic diagram of the installation of the partition according to some embodiments of this application; Figure 9 This is a schematic diagram of the structure of the first groove and the first card plate according to some embodiments of this application; Figure 10 This is a schematic diagram of the structure of the second groove and the second card plate according to some embodiments of this application; Figure 11 This is a schematic diagram of the structure of a gas connector according to some embodiments of this application; Figure 12 This is a schematic diagram of the installation of a gas nozzle according to some embodiments of this application.

[0016] In the diagram, 1 is the mask body, 2 is the first air supply channel, 3 is the first solenoid valve, 4 is the pressure sensor control box, 5 is the pressure relief outlet, 6 is the second solenoid valve, 7 is the gas tee connector, 8 is the shell, 9 is the lithium battery, 10 is the charge / discharge integrated circuit controller, 11 is the gas delivery circuit control integrated board, 12 is the oxygen supply device, 13 is the USB charging port, 14 is the second air supply channel, 15 is the third air supply channel, 16 is the miniature air pump, 17 is the air interface, 18 is the intermittent air supply box, 19 is the oxygen interface, 20 is the air filter box, 201 is the fixing bracket, 202 is the slot, 203 is the filter, 21 is the third solenoid valve, 22 is the control panel, 23 is the electronic timer, 24 is the cover plate, and 25 is the fixed... 26 is a fixed clip, 27 is a bandage, 28 is a fixing ring, 29 is a charge / discharge controller, 30 is a power switch, 30 is a cup body, 31 is a partition, 32 is an inhalation chamber, 33 is an exhalation chamber, 34 is a vent, 35 is an inhalation port, 36 is a breathing valve, 37 is a gas connector, 38 is an air inlet, 39 is the first air outlet pipe, 40 is the second air outlet pipe, 41 is a mounting hole, 42 is a perforated hole, 43 is a gas nozzle, 44 is a silicone sealing ring, 45 is a flexible sealing strip, 46 is a fastening point, 47 is the first groove, 48 is the first retaining plate, 49 is the second groove, 50 is the second retaining plate, 51 is a valve plate, 52 is an intermediate support, 53 is a water pipe through hole, 54 is a silicone plug cap, 55 is a wearing fixation device, and 56 is an intermediate hole. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0018] Conversely, this application covers any substitutions, modifications, equivalent methods, and schemes made within the spirit and scope of this application as defined in the claims. Furthermore, to provide the public with a better understanding of this application, certain specific details are described in detail below. However, this application can be fully understood by those skilled in the art even without these detailed descriptions.

[0019] refer to Figures 1-2The protective mask may include: a first air supply device or a second air supply device, and a mask body 1, wherein the first air supply device or the second air supply device may be interchangeably connected to the mask body 1. In some embodiments, the first air supply device may include a first air supply channel 2; a first solenoid valve 3 is provided at the air inlet end of the first air supply channel 2, and the air outlet end of the first air supply channel 2 is detachably connected to the air inlet 38 of the mask body 1; a pressure sensing control box 4 and a pressure relief outlet 5 are connected through the first air supply channel 2, and a second solenoid valve 6 is provided at the pressure relief outlet 5; the pressure sensing control box 4 is controlled and connected to the first solenoid valve 3 and the second solenoid valve 6.

[0020] In some embodiments, a gas tee connector 7 is also provided on the first gas supply channel 2, and a pressure sensor is provided inside the pressure sensing control box 4, with one end of the pressure sensor connected to one port of the gas tee connector 7 via a pipe. By adding a gas tee connector 7 to the first gas supply channel 2 and connecting the other end of the gas tee connector 7 to the pressure sensing control box 4, it is convenient to connect to the pressure sensor inside the pressure sensing control box 4.

[0021] In some embodiments, a maximum pressure value and a minimum pressure value can be set for the pressure sensor. When the pressure sensor senses that the pressure value in the gas tee connector 7 reaches the set maximum pressure value, it will transmit a signal to the pressure sensor control box 4. The pressure sensor control box 4 will control the first solenoid valve 3 to close and control the second solenoid valve 5 to open, so that the gas in the first gas supply channel 2 can be released from the pressure relief outlet 5. When the pressure sensor detects that the pressure value in the gas tee connector 7 reaches the minimum set value, the pressure sensor control box 4 will control the first solenoid valve 3 to open and supply oxygen, so as to avoid the gas pressure in the pipeline being too high or too low.

[0022] In some embodiments, the first gas supply device further includes a housing 8, and the first gas supply channel 2 is disposed within the housing 8; the housing 8 also contains a lithium battery 9, a charge-discharge-lift integrated circuit controller 10, and a gas delivery circuit control integrated board 11; the lithium battery 9 and the charge-discharge-lift integrated circuit controller 10 are connected by wires, the output terminal of the charge-discharge-lift integrated circuit controller 10 is connected to the input terminal of the pressure sensing control box 4 by wires, the output terminal of the pressure sensing control box 4 is connected to the input terminals of the first solenoid valve 3 and the gas delivery circuit control integrated board 11 respectively, and the input terminal of the second solenoid valve 6 is connected to the output terminal of the gas delivery circuit control integrated board 11 by wires.

[0023] In some embodiments, the air inlet of the first air supply channel 2 may be connected to an oxygen supply device 12. In some embodiments, the oxygen supply device 12 is preferably a portable oxygen cylinder, and the oxygen supply device 12 is connected to the air inlet of the first air supply channel 2 via a flexible hose.

[0024] In some embodiments, a USB charging port 13 is also provided on one end of the charging, discharging, and lifting integrated circuit controller 10 on the outer surface of the housing 8. In some embodiments, the control mode of the gas delivery circuit control integrated board 11 can be manually set, so that the gas delivery circuit control integrated board 11 can continuously or intermittently supply oxygen to the second solenoid valve 6, and the intermittent oxygen supply control mode is based on the same principle as the commonly used interval controller, which is simple to operate.

[0025] In some embodiments, the first or second air supply device can be replaced and connected to the mask body 1. When the first air supply device is connected to the mask body 1, the working principle of the present invention is as follows: When the present invention is working, the oxygen source 12 is connected to the air inlet of the first air supply channel 2 through a hose, and then the air outlet of the first air supply channel 2 is connected to the air inlet 38 of the mask body 1. After the operation is completed, the oxygen delivery circuit control integrated board 11 is first set according to the human breathing frequency, and the opening and closing interval of the second solenoid valve 6 is set to realize intermittent control and continuous control. Then, the pressure sensor in the pressure intelligent control box 4 is set with the highest and lowest pressure values ​​(the pressure sensor control box contains an STM32 chip). Then, when working, the pressure sensor detects the air pressure value in the first air supply channel 2 connected to the gas tee connector 7. When the air pressure value reaches the set highest pressure value, a signal is transmitted. The pressure sensor control box 4 controls the first solenoid valve 3 to close and the second solenoid valve 6 to open. By opening and closing the end of the second solenoid valve 6 connected to the pressure relief outlet 5, the gas in the pipeline is depressurized. When the pressure sensor detects that the pressure value in the gas tee connector 7 has reached the minimum set value, the pressure sensor control box 4 controls the first solenoid valve 3 to open and supply oxygen, thus avoiding excessively high or low gas pressure in the pipeline. This intelligent operation realizes intelligent oxygen supply to the mask body 1 and intermittent oxygen supply control, further avoiding oxygen waste.

[0026] It should be noted that both the first solenoid valve 3 and the second solenoid valve 6 are miniature gas solenoid valves from the 0K62 series.

[0027] refer to Figures 3-6The second air supply device includes a second air supply channel 14 and a third air supply channel 15. A miniature air pump 16 is connected between the air inlet and air outlet of the second air supply channel 14, and the air inlet of the second air supply channel 14 is an air interface 17. An intermittent air supply box 18 is connected between the air inlet and air outlet of the third air supply channel 15, and the air inlet of the third air supply channel 15 is an oxygen interface 19. The air outlets of the second air supply channel 14 and the third air supply channel 15 are detachably connected to the air inlet 38 of the mask body 1. In some embodiments, the miniature air pump 16 can be a miniature air pump of model 4A12B25R37. In some embodiments, the gas output flow rate of the miniature air pump 16 can be adjusted by adjusting the speed of the air pump motor.

[0028] In some embodiments, an air filter box 20 is connected to the air inlet end of the second air supply channel 14 and the input end of the micro air pump 16. In some embodiments, two fixing brackets 201 are equidistantly arranged inside the air filter box 20. A slot 202 is opened on the upper surface of the fixing bracket 201, and a filter 203 is inserted inside the slot 202. At least ten sets of vent holes are opened on both sides of the fixing bracket 201. The input end of the air filter box 20 is connected to the air inlet 17, and the output end of the micro air pump 16 is a clean air outlet, which is connected to the air outlet end of the second air supply channel 14.

[0029] In use, the micro air pump 16 draws air into the air filter box 20 from the air inlet of the second air supply channel 14. After being filtered by the filter 203 in the air filter box 20, toxic and harmful substances in the air can be removed. The filtered clean air provides a portion of the clean air to the mask body 1 through the outlet of the second air supply channel 14. The micro air pump 16 can adjust the gas output flow rate by adjusting the speed of the air pump motor, which is convenient to operate.

[0030] In some embodiments, the filter 203 can be flexibly configured according to the filtration level requirements, and can be selected from one or more of the following: activated carbon layer, meltblown fabric layer, PP cotton layer, etc. The air filter box 20 can also be equipped with an essential oil storage compartment. Different essential oils can be filled in the storage compartment according to different needs. Essential oils are volatile and can be delivered to the mask body 1 along with clean air to regulate the aroma and mood. Essential oils with therapeutic effects can also be selected. For example, lemon or peppermint essential oils can be filled for invigoration, and tea tree essential oils can be filled for antibacterial properties.

[0031] In some embodiments, the air inlet of the third air supply channel 15 is connected to an oxygen supply device 12 via a hose, and the oxygen supply device 12 is preferably a portable oxygen cylinder.

[0032] In some embodiments, a third solenoid valve 21 is provided on the third air supply channel 15 within the intermittent air supply box 18, and a control panel 22 and an electronic timer 23 are provided on the inner side of the intermittent air supply box 18. The output terminal of the electronic timer 23 is electrically connected to the input terminal of the control panel 22, and the control panel 22 and the third solenoid valve 21 are connected by a wire. In some embodiments, the core component of the control panel 22 is an STM32 chip. In use, the air inlet of the third air supply channel 15 can be connected to the oxygen supply device 12. The oxygen supply device 12 is small in size and weight, making it easy to carry. After connection, the oxygen in the oxygen supply device 12 can enter the intermittent air supply box 18. Through the cooperation of the third solenoid valve 21, electronic timer 23 and control panel 22 inside, oxygen can be provided intermittently. The specific operation is as follows: First, the opening and closing interval of the third solenoid valve 21 is set to the electronic timer 23, which conforms to the time difference of human exhalation interval. The oxygen in the oxygen supply device 12 is delivered to the mask body 1 through the air outlet of the third air supply channel 15 by the third solenoid valve 21. When the electronic timer 23 reaches the set time, it transmits a signal to the control panel 22, which controls the third solenoid valve 21 to close and stop the oxygen delivery. After a certain interval, the electronic timer 23 sends a command to the control panel 22 again, which controls the third solenoid valve 21 to open and continue to deliver oxygen. This cycle is repeated to realize the intermittent oxygen supply to the mask body 1.

[0033] In some embodiments, the second air supply device further includes a housing 8, a second air supply channel 14 and a third air supply channel 15 disposed within the housing 8; a cover plate 24 is rotatably connected to the upper surface of the housing 8, at least two fixing clips 25 are provided at the top corner of the lower surface of the housing 8, and at least one bandage 26 is connected to each of the two side edges of the housing 8. In some embodiments, fixing clips 25 are provided at the four corners of the lower surface of the housing 8, and two bandages 26 are connected to the front and rear edges of the housing 8. A connecting rope is provided on one side of the fixing clip 25, and the fixing clip 25 is connected to the housing 8 through the connecting rope. Fixing rings 27 are provided on both sides of the housing 8 at the ends of the bandages 26, and the housing 8 is connected to the bandages 26 through the fixing rings 27. The bandages 26 are made of elastic material. Fixing clips 25 and bandages 26 are provided at the four corners of the lower surface of the housing 8, so that when the staff uses the device, they can directly use the bandages 26 to tie the device to their arms and use the fixing clips 25 to fix the device to the clothing on their arms. This makes it easy to connect the device to the mask body 1, thereby realizing the carrying and fixing of the device. It should be noted that the overall structure of the device is small and easy to carry.

[0034] In some embodiments, a charge / discharge controller 28 is also provided inside the housing 8, and a lithium battery 9 is provided inside the housing 8 on one side of the charge / discharge controller 28. A power switch 29 is provided on one side of the housing 8 on the side of the air inlet end of the third air supply channel 14. A USB charging port 13 is provided on the side of the housing 8 near the power switch 29. By designing a USB charging port 13 on the device in conjunction with the use of the charge / discharge controller 28, it is convenient to charge the lithium battery 9 inside the device via an external USB data cable, thus facilitating the long-term use of the device.

[0035] When the second air supply device is connected to the mask body 1, the working principle of the present invention is as follows: When the present invention is in operation, the second air supply device is tied to the arm with the bandage 26 and the fixing clip 25, so as to facilitate the fixing of the device. If it is necessary to supply air to the mask body 1, the air outlet of the second air supply channel 14 is connected to the air inlet of the mask body 1 using a hose. By controlling the operation of the micro air pump 16, the air is conveniently delivered to the mask body 1 after being filtered. The type of filter 203 can be selected according to the protection requirements. When oxygen supply is required, the air inlet of the third air supply channel 15 is connected to the mask body 1, and the air inlet of the third air supply channel 15 is connected to the oxygen supply device 12 through a hose. Then, by controlling the third solenoid valve 21, the oxygen in the oxygen supply device 12 is delivered to the mask body 1. Through the cooperation of the electronic timer 23 and the control panel 22, the third solenoid valve 21 can intermittently supply oxygen to the mask body 1, and the intermittent oxygen supply frequency matches the human breathing frequency, thereby achieving the purpose of saving oxygen. The oxygen supply device 12 can be placed in the pocket of the work clothes. When oxygen or air needs to be supplied at the same time, the micro air pump 16 and the third solenoid valve 21 are turned on at the same time to achieve synchronous operation of both. This device is not only small in size and light in weight, but also convenient to carry and fix. It can not only provide clean air for protective masks, but also intermittently supply oxygen, or use a mixture of air and oxygen. The operation is simple.

[0036] refer to Figures 7-12In some embodiments, the mask body 1 includes a cup body 30; the inner side of the cup body 30 is divided into an inhalation chamber 32 and an exhalation chamber 33 by a partition 31, and ventilation holes 34 are correspondingly opened on both sides of the partition 31. The surface of the inhalation chamber 32 is provided with a plurality of inhalation holes 35, and a breathing valve 36 is provided at the exhalation chamber 33; a gas connector 37 is provided at the bottom of the exhalation chamber 33, and air inlets 38 are respectively provided on both sides of the outer surface of the gas connector 37. The air inlets 38 are respectively connected to the first air outlet pipe 39 and the second air outlet pipe 40 provided on both sides of the inner surface of the gas connector 37. The first air outlet pipe 39 and the second air outlet pipe 40 are respectively connected to the ventilation holes 34 on both sides of the partition 31. In some embodiments, the lower end of the cup body 30 is provided with a mounting hole 41 at the exhalation chamber 33, and the inner side of the cup body 30 is provided with a perforated hole 42 inside the exhalation chamber 33. The breathing valve 36 is installed inside the perforated hole 43. In some embodiments, a gas connector 37 is provided inside the mounting hole 41.

[0037] In some embodiments, each of the two vent holes 34 contains a gas nozzle 43, and one end of the gas nozzle 43 is connected to a hose. The surface of the gas nozzle 43 is provided with a jet hole, and the jet direction can be adjusted by rotating the gas nozzle 43. The direction of the jet hole can be adjusted by rotating 360° according to the user's habits, thereby improving the user's comfort.

[0038] In some embodiments, a silicone sealing ring 44 is sealed to the outer side of the cup body 30, and a flexible sealing strip 45 adapted to the partition 31 is provided on the silicone sealing ring 44. In some embodiments, a slot is provided on the lower end of the flexible sealing strip 45 corresponding to the partition 31, and the size of the slot is adapted to the size of the partition 31. The flexible sealing strip 45 and the partition 31 are connected by the slot. The flexible sealing strip 45 is secured to the partition 31 by the slot, thereby facilitating the fixing of the silicone sealing ring 44 to the cup body 30. The lower surface of the silicone sealing ring 44 is also provided with a fastening point 46, and a positioning hole is provided on the side of the cup body 30 to facilitate further fixing of the silicone sealing ring 44.

[0039] By employing a silicone sealing ring 44 and a nose clip-free design, it avoids causing hard pressure injuries to the bridge of the nose and provides better facial fit. Furthermore, the flexible sealing strip 45, because it directly contacts the bridge of the nose, uses a flexible material to better conform to the facial curves, achieving a better seal while minimizing pressure on the bridge of the nose.

[0040] In some embodiments, a first groove 47 is formed on the outer surface of the cup body 30 corresponding to the inhalation chamber 32. A first retaining plate 48 is detachably installed on the first groove 47. A plurality of inhalation holes 35 are correspondingly provided on the first groove 47 and the first retaining plate 48. A filter sheet 203 is provided between the first groove 47 and the first retaining plate 48. In some embodiments, a second groove 49 is formed on the outer surface of the cup body 30 corresponding to the breathing valve 36. A second retaining plate 50 is engaged inside the second groove 49. A plurality of exhalation holes are correspondingly provided on the second groove 49 and the second retaining plate 50.

[0041] In some embodiments, the outer side of the first retaining plate 48 is provided with at least three fastening points 46, and the inner sidewall of the first groove 47 is provided with the same number of positioning holes as the fastening points 46. The first retaining plate 48 and the first groove 47 are engaged and connected by the fastening points 46 and the positioning holes. At least ten air intake holes are provided at equal intervals on the bottom of the first groove 47 and the outer surface of the first retaining plate 48. The first groove 47 and the first retaining plate 48 are the same size and shape and fit together. There is a gap between the first groove 47 and the first retaining plate 48 to facilitate the replacement of the filter 203 according to the protection level requirements. It can be replaced with a medical protective mask sheet or a PM2.5 filter sheet. The interior of the second groove 49 is located inside the breathing valve 36. A valve plate 51 (a breathing valve plate) is provided on the outer side of the device. An intermediate support 52 is installed on the outer side of the valve plate 51. At least three sets of small holes are opened on the surface of the intermediate support 52 and the second card plate 50 at the corresponding perforated holes 42. Filter sheets 203 are provided between the first groove 47 and the first card plate 48 and between the intermediate support 52 and the second card plate 50. The filter sheets 203 are either medical protective mask sheets or PM2.5 filter sheets. The second groove 49 and the second card plate 50 are also the same size and shape. There is a gap between the intermediate support 52 and the second card plate 50 to accommodate the filter sheets 203. This facilitates the work needs of the staff, allows for the replacement of different types of filter sheets, and is simple to operate and easy to install.

[0042] By using the breathing valve 36, the second groove 49 with exhalation holes, and the second retaining plate 50 located on the surface of the cup body 30 corresponding to the exhalation chamber 33, along with the valve plate 51, the exhaled air can be easily filtered to prevent patients with pathogens from spreading viruses and bacteria. Furthermore, the first retaining plate 48 located on the surface of the cup body 30 corresponding to the inhalation chamber 32, along with the first groove 47 and the filter plate 203, can filter the air inhaled into the mask, thereby improving the safety of the user's inhaled air.

[0043] In some embodiments, the gas connector 37 also has a water pipe through hole 53, and a silicone cap 54 is provided at the end of the water pipe through hole 53. In some embodiments, wearing fixing devices 55 are provided on both sides of the cup body 30, and the surface of the wearing fixing device 55 has a connecting hole, and a wearing rope is provided in the connecting hole. This facilitates the wearing of the device by the staff.

[0044] When in use, the mask body can be connected to an external air supply device, such as a first or second air supply device, through two air inlets 38. Simultaneously, the other ends of the first and second air outlet pipes 39 and 40 are connected via flexible hoses to gas nozzles 43 installed in the two ventilation holes 34, facilitating the introduction of purified air or oxygen into the inhalation chamber 32. The silicone cap 54 can also be removed, allowing the water inlet tube to be inserted through the water pipe hole 53 into the exhalation chamber 33 inside the mask cup body 30 (a sealing ring is present at the end of the water pipe hole 53 to seal any gap between the water inlet tube and the water pipe hole 53). This allows staff to drink water or replenish energy when thirsty. By connecting the water inlet tube to the mask, staff can drink water without removing the mask when thirsty.

[0045] In some embodiments, a central hole 56 is provided in the middle of the surface of the partition 31. In some embodiments, a pressure relief valve or a filter valve can be installed in the central hole 56. Due to the strong sealing of the mask, the pressure values ​​in the inhalation chamber 32 and the exhalation chamber 33 are unbalanced, which can cause hypoxia or oxygen excess after prolonged use. Therefore, the pressure relief valve or filter valve installed in the central hole 56 can keep the pressure in the exhalation chamber 32 and the inhalation chamber 33 under positive pressure, thereby ensuring smooth breathing for the staff. In addition, with the positive pressure delivery of air or oxygen, the negative pressure problem inside the mask can be further balanced. Moreover, depending on the working environment, the gas connector 37 can also be a gas tee connector or a silicone plug.

[0046] In some embodiments, the mask body 1 can be used in high-pollution, high-risk environments. During use, the first clamping plate 48 and the second clamping plate 50 can be opened, and suitable filter sheets 203 can be selected and installed into the first groove 47 and the second groove 49 respectively, and fixed using the first clamping plate 48 and the second clamping plate 50. Then, a corresponding pressure relief valve or filter valve is installed in the middle hole 56 to ensure the pressure balance in the exhalation chamber 33 and the inhalation chamber 32. Further, one end of the gas connector 37 is connected to the gas nozzle 43 in the ventilation hole 34 through a hose, and the other end is connected to the oxygen supply and / or gas supply equipment respectively. The water pipe and water supply equipment are connected to the mask through the water pipe through hole 53. This design allows medical staff to replenish moisture and energy in highly polluted environments without removing their masks. It also facilitates the supply of filtered clean air or oxygen to the mask. However, the strong seal of the mask can lead to significant negative pressure inside, affecting breathing. During normal use, the mounting hole 41 can be plugged with silicone, eliminating the need for air, oxygen, or water supply equipment. The design uses silicone to cover the mouth and nose, without a nose clip, preventing pressure injuries to the bridge of the nose and providing a better facial seal. Furthermore, it can supply positive pressure to the mask cup via medical oxygen or clean filtered air, isolating viruses, droplets, and aerosols for enhanced protection. It can also be used as an oxygen mask or a low-pressure oxygen supply mask.

[0047] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A smart air-supply protective mask, characterized in that, include: A first air supply device or a second air supply device, and a mask body (1); the first air supply device or the second air supply device may be replaced and connected to the mask body (1). The first air supply device includes a first air supply channel (2); a first solenoid valve (3) is provided at the air inlet end of the first air supply channel (2), and the air outlet end of the first air supply channel (2) is detachably connected to the air inlet (38) of the mask body (1). The first gas supply channel (2) is connected to the pressure sensor control box (4) and the pressure relief outlet (5). A second solenoid valve (6) is provided at the pressure relief outlet (5). The pressure sensor control box (4) is connected to the first solenoid valve (3) and the second solenoid valve (6). The second air supply device includes a second air supply channel (14) and a third air supply channel (15); a micro air pump (16) is connected between the air inlet and the air outlet of the second air supply channel (14), and the air inlet of the second air supply channel (14) is an air interface (17). An intermittent gas supply box (18) is connected between the inlet and outlet of the third gas supply channel (15), and the inlet of the third gas supply channel (15) is an oxygen interface (19). The air outlet of the second air supply channel (14) and the air outlet of the third air supply channel (15) are detachably connected to the air inlet (38) of the mask body (1). The second gas supply device also includes a housing (8), and the second gas supply channel (14) and the third gas supply channel (15) are disposed inside the housing (8); The upper surface of the housing (8) is rotatably connected to a cover plate (24), and at least two fixing clips (25) are provided at the top corner of the lower surface of the housing (8). At least one bandage (26) is connected to each side edge of the housing (8). A third solenoid valve (21) is provided on the third air supply channel (15) inside the intermittent air supply box (18). A control panel (22) and an electronic timer (23) are provided on the inner side of the intermittent air supply box (18). The output end of the electronic timer (23) is electrically connected to the input end of the control panel (22). The control panel (22) and the third solenoid valve (21) are connected by a wire.

2. The smartly supplied protective mask of claim 1, wherein, The first gas supply device also includes a housing (8), and the first gas supply channel (2) is disposed inside the housing (8); the housing (8) is also provided with a lithium battery (9), a charge-discharge-lift integrated circuit controller (10) and a gas delivery circuit control integrated board (11); The lithium battery (9) and the charge-discharge-rise integrated circuit controller (10) are connected by wires. The output end of the charge-discharge-rise integrated circuit controller (10) is connected to the input end of the pressure sensing control box (4) by wires. The output end of the pressure sensing control box (4) is connected to the input ends of the first solenoid valve (3) and the gas delivery circuit control integrated board (11) respectively. The input end of the second solenoid valve (6) is connected to the output end of the gas delivery circuit control integrated board (11) by wires.

3. The smartly supplied protective mask of claim 1, wherein, The mask body (1) includes a cup body (30); the inner side of the cup body (30) is divided into an inhalation chamber (32) and an exhalation chamber (33) by a partition (31), and ventilation holes (34) are provided on both sides of the partition (31). The surface of the inhalation chamber (32) is provided with multiple inhalation holes (35), and a breathing valve (36) is provided at the exhalation chamber (33). The bottom of the exhalation chamber (33) is provided with a gas connector (37). The gas connector (37) has air inlets (38) on both sides of its outer surface. The air inlets (38) are connected to the first air outlet pipe (39) and the second air outlet pipe (40) on both sides of the inner surface of the gas connector (37). The first air outlet pipe (39) and the second air outlet pipe (40) are connected to the ventilation holes (34) on both sides of the partition (31).

4. The smartly supplied protective mask of claim 3, wherein, The outer side of the cup body (30) is sealed with a silicone sealing ring (44), and a flexible sealing strip (45) adapted to the partition (31) is provided on the silicone sealing ring (44).

5. The smartly supplied protective mask of claim 3, wherein, The outer side of the cup body (30) is provided with a first groove (47) corresponding to the air intake chamber (32). The first groove (47) is detachably installed with a first card plate (48). The first groove (47) and the first card plate (48) are respectively provided with a plurality of air intake holes (35). A filter sheet (203) is provided between the first groove (47) and the first card plate (48).

6. The smartly supplied protective mask of claim 3, wherein, The gas connector (37) is also provided with a water pipe through hole (53), and a silicone plug (54) is provided at the port of the water pipe through hole (53).

7. The smartly supplied protective mask of claim 3, wherein, The cup body (30) is provided with a wearing fixing device (55) on both sides. The surface of the wearing fixing device (55) is provided with a connecting hole and a wearing cord is provided in the connecting hole.

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