CN112915412A

CN112915412A - Removable filter core prevent haze gauze mask

Info

Publication number: CN112915412A
Application number: CN202110221606.8A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-27
Filing date: 2021-02-27
Publication date: 2021-06-08

Abstract

The utility model provides a removable filter core prevent haze gauze mask, includes gauze mask body, breather valve, elastic cord, ear back of the body gasket, circular blow vent, filter core, display, pressure differential detection detecting element and MCU unit. The edge of circular blow vent is provided with a plurality of archs, and the edge of filter core is provided with a plurality ofly and protruding matched with recess, through recess and protruding inseparable block in order to realize being connected with dismantling of filter core and circular blow vent. Removable filter core prevent haze gauze mask can used repeatedly, and filter core material can accomplish to change at any time, makes things convenient for high-efficient easily to wash, can solve the problem that the user can't learn the pollution conditions of gauze mask filter core and extravagant gauze mask or wear serious dirty gauze mask in prior art, bonds the back of the ear gasket and can improve the comfort level that the gauze mask wore the in-process on the elasticity area.

Description

Removable filter core prevent haze gauze mask

Technical Field

The invention relates to the technical field of human health protection articles, in particular to a haze-proof mask filter element.

Background

With the development of industrial production and socioeconomic performance, residents living in towns are increasingly subjected to severe environmental pollution such as air pollution, soil pollution and water pollution, among which the air pollution is the most difficult to eradicate. In recent years, in the autumn and winter, large-scale haze weather appears in domestic big cities. The pollutant components in the air in haze days are very complex, such as sulfides, nitrogen oxides, organic hydrocarbons, inhalable particles, dust. The main harmful particles in human lung are inhalable particles, namely aerosol particles (PM 10) with particle diameter less than 10um or particles (PM 2.5) with particle diameter less than 2.5 um, the surfaces of the particles usually carry a large amount of toxic and harmful substances, and the particles with particle diameter of PM2.5 are very small, so the particles are easy to adhere to respiratory tract bronchial mucosa and enter alveoli and then enter blood, and various respiratory tract diseases are caused.

For example, the haze-proof mask is applied to severe haze weather, the haze-proof mask is a disposable mask in the current market, the haze-proof mask is influenced by epidemic situations in the economic aspect, the price of the mask is greatly increased, a medical mask can be used for only one or two days and cannot be used continuously, daily consumption of the mask becomes economic burden of a plurality of residents, and the haze-proof mask is produced in large quantities in China in the macroscopic aspect and is double examined for medical material storage and environmental resource problems; from the environmental protection perspective, after the disposable mask is used for two days, the filter element part is full of dust and germs, and the user can not be good for the health after continuously using the disposable mask, and the disposable mask is easy to cause environmental pollution after being thrown at will. And the traditional mask with the replaceable filter element has the defects of complicated steps, inconvenient operation and great defect of edge sealing when the filter element is replaced.

Therefore, how to change the current situations of low utilization rate of the mask and complicated replacement of the filter element in the prior art is a technical problem to be solved urgently by the technical personnel in the field.

Disclosure of Invention

The invention provides a haze-proof mask with a replaceable filter element, and solves the problems that a disposable mask is wasted in use and the use cost of the existing mask with the replaceable filter element is high.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the utility model provides a removable filter core prevent haze gauze mask, includes gauze mask body, breather valve, elastic cord, ear back of the body gasket, circular blow vent, filter core, display, pressure differential detection detecting element and MCU unit. The both sides of gauze mask body set up breather valve and display respectively, pressure difference detection detecting element sets up the edge at circular vent, the MCU unit sets up in the gauze mask body, pressure difference detection detecting element, display all with the display electricity is connected. The intermediate position department of gauze mask body is equipped with circular air vent, the edge of circular air vent is provided with a plurality of archs, the edge of filter core is provided with a plurality ofly and protruding matched with recess, through recess and protruding inseparable block are connected in order to realize being connected with dismantling of filter core and circular air vent.

The circular vent is a vent which is formed by a metal ring and can be used for people to breathe, and the edge of the mask body is rolled and embedded into the metal ring.

In the air suction direction, the filter element comprises a spun-bonded non-woven fabric, an activated carbon film 8-3, a melt-blown non-woven fabric and an antibacterial layer which are sequentially embedded, wherein the spun-bonded non-woven fabric can adsorb inhalable particles with larger particle sizes in haze-containing air, such as PM 10; the activated carbon film can adsorb toxic and harmful gases in the air and can also adsorb and remove peculiar smell in the air; the melt-blown non-woven fabric can adsorb inhalable particles with smaller particle sizes in haze-containing air, such as PM 2.5; the antibacterial layers 8-5 can kill germs in the haze-containing air.

The edge of the mask body is provided with a sewing turned edge, and the sewing turned edge is attached to the outline of the face of a human body; the mask body is made of polyethylene or polypropylene materials, and can also be made of aluminum alloy materials.

The breather valve is a check valve, and the waste gas that can supply the lung to exhale is discharged to the cover outsidely, and the air can not inhale from the breather valve, promptly the breather valve only allows gaseous discharge gauze mask and does not allow gaseous suction gauze mask.

The inner ring part of the circular vent is provided with a pressure difference detection unit, and the pressure difference detection unit comprises an in-cover pressure detection device, an out-cover pressure detection device, a signal wire and a digital/analog converter. The cover internal pressure detection device is connected with the inner ring part of the circular vent, is arranged at the upper part of the antibacterial layer and is used for detecting the cover internal pressure; the pressure detection device outside the cover is connected with the inner ring part of the circular vent, arranged on the upper part of the spunbonded non-woven fabric and used for detecting the air pressure outside the cover. The mask comprises a mask body, a cover internal pressure detection device, a cover external pressure detection device and a digital/analog converter, wherein the cover internal pressure detection device and the cover external pressure detection device are respectively and correspondingly connected with a signal wire, the signal wire is arranged inside the mask body, and the signal wire is connected with the digital/analog converter.

The core of the control system is an MCU unit, the MCU unit comprises a differential pressure calculation unit and an analysis unit, the differential pressure calculation unit is used for calculating differential pressure and is connected with a digital-to-analog converter through a circuit. The MCU unit is also connected with a storage unit and a power supply unit, wherein the storage unit is used for storing detection data and preset data; the power supply unit is used for supplying power to the MCU unit and the display, the display adopts a miniature liquid crystal display and can display data such as detection pressure difference, preset pressure difference, state reminding and the like, and the data are stored in the storage unit.

The control system is realized on the basis of a control method that the cover internal pressure detection device and the cover external pressure detection device respectively detect the cover internal pressure and the cover external pressure, detected data are sent to the digital-to-analog converter, the digital-to-analog converter converts an analog signal into a digital signal and sends the digital signal to the MCU unit, the differential pressure calculation unit calculates the current detected differential pressure and sends the calculated detected differential pressure data to the storage unit for real-time storage, the analysis unit retrieves the detected differential pressure data and preset differential pressure data in the storage unit for analysis, and sends an analysis result to a display for display, specifically, when the detected differential pressure is greater than or equal to the preset differential pressure, the situation shows that the filter element of the mask is seriously clogged, and when the detected differential pressure is less than the preset differential pressure, the state reminding indicates that a red light or ' replacement ' is performed ', and when the detected differential pressure is less than the preset differential pressure, at this time, the dirty degree of the mask filter element is light, and the state reminding is to display a green light or to continue to use.

In addition, the elastic cord is all connected at the both sides edge of gauze mask body, it has the back of the ear gasket to bond on the elastic cord, and the back of the ear gasket adopts silica gel to make. When a user wears the mask, the pain of tightening ears caused by the elastic band can be relieved, and the user still feels comfortable when wearing the mask for a long time.

The invention has the beneficial effects that: the haze-proof mask with the replaceable filter element can be reused, the filter element material can be replaced at any time, the mask is convenient, efficient and easy to clean, the problem that a user cannot know the pollution condition of the filter element of the mask and wastes the mask or wears a seriously polluted mask in the prior art can be solved, the haze-proof mask with the replaceable filter element is clean and tidy in appearance, can be reused, is convenient to replace the filter element, is environment-friendly and sanitary, and can avoid resource waste and environmental pollution; in addition, the ear back pad is bonded on the elastic band, so that the comfort degree of the mask in the wearing process can be improved.

Drawings

FIG. 1 is an isometric view of the mask of the present invention in an external side three-dimensional configuration;

FIG. 2 is another perspective view of the mask of the present invention;

fig. 3 is a cross-sectional view of the mask filter element structure of the present invention;

FIG. 4 is a schematic view of a circular vent connection of the present invention;

FIG. 5 is a schematic view of yet another circular vent connection of the present invention.

FIG. 6 is a control system diagram of the present invention.

In the figure: 1-mask body; 2-a breather valve; 3, elastic band; 4-an ear back pad; 5-sewing and curling edges; 6-clamping the nose; 7-circular vents; 7-1-bulge, 7-2-baffle and 8-filter element; 8-1-groove; 8-2-spunbond nonwoven fabric; 8-3-activated carbon film; 8-4-melt blown nonwoven; 8-5-antibacterial layer; 8-6-bonding grooves; 8-7-bonding leather strips; 9-a display; 10-1-in-hood pressure detection means; 10-2-pressure detection device outside cover.

Detailed Description

Example 1

Referring to the attached drawings 1-2, the invention provides a haze-proof mask with a replaceable filter element, which comprises a mask body 1, a breather valve 2, an elastic band 3, an ear back gasket 4, a circular vent 7, a filter element 8, a display 9, a pressure difference detection unit and an MCU unit. The both sides of gauze mask body 1 set up breather valve 2 and display 9 respectively, and pressure difference detection detecting element sets up at the edge of circular vent 7, and the MCU unit sets up in gauze mask body 1, and pressure difference detection detecting element, display 9 all are connected with display 9 electricity. The mask comprises a mask body 1 and is characterized in that a circular vent 7 is arranged in the middle of the mask body 1, a plurality of bulges 7-1 are arranged on the edges of the circular vent 7, a plurality of grooves 8-1 matched with the bulges 7-1 are arranged on the edges of a filter element 8, and the filter element 8 and the circular vent 7 can be detachably connected through tight clamping of the grooves 8-1 and the bulges 7-1.

The circular vent 7 is a vent formed by a metal ring and used for people to breathe, and the edge of the mask body 1 is rolled and embedded into the metal ring.

Looking at fig. 3-4, in the air suction direction, the filter element 8 includes a spunbonded nonwoven fabric 8-2, an activated carbon film 8-3, a meltblown nonwoven fabric 8-4, and an antibacterial layer 8-5, which are sequentially embedded, wherein the spunbonded nonwoven fabric 8-2 can adsorb inhalable particles with larger particle sizes in the haze-containing air, such as PM10, the activated carbon film 8-3 can adsorb toxic and harmful gases in the air and can also adsorb and remove odors in the air, the meltblown nonwoven fabric 8-4 can adsorb inhalable particles with smaller particle sizes in the haze-containing air, such as PM2.5, and the antibacterial layer 8-5 can kill germs in the haze-containing air.

The edge of the mask body 1 is provided with a sewing turned edge 5, and the sewing turned edge 5 is attached to the outline of the face of a human body; the mask body 1 is made of polyethylene or polypropylene material, and can also be made of aluminum alloy material.

The breather valve 2 is substantially a one-way valve, and exhaust gas exhaled from the lungs can be exhausted to the outside of the mask, but air cannot be inhaled from the breather valve 2, i.e. the breather valve 2 only allows gas to exit the mask but not allow gas to enter the mask.

The inner ring part of the circular vent 7 is provided with a differential pressure detection unit which comprises an in-cover pressure detection device 10-1, an out-cover pressure detection device 10-2, a signal wire and a digital/analog converter. The cover internal pressure detection device 10-1 is connected with the inner ring part of the circular vent 7, is arranged at the upper part of the antibacterial layer 8-5 and is used for detecting the cover internal pressure; the pressure detection device 10-2 outside the hood is connected with the inner ring part of the circular vent 7 and arranged on the upper part of the spun-bonded non-woven fabric 8-2 and used for detecting the air pressure outside the hood. The mask internal pressure detection device 10-1 and the mask external pressure detection device 10-2 are correspondingly connected with signal wires, the signal wires are arranged inside the mask body 1, and the signal wires are connected with a digital/analog converter.

Considering fig. 6, fig. 6 shows a control system diagram of the present invention, the core of the control system is an MCU unit, the MCU unit includes a differential pressure calculation unit and an analysis unit, the differential pressure calculation unit is used for calculating differential pressure, and is connected to a digital-to-analog converter through a line. The MCU unit is also connected with a storage unit and a power supply unit, wherein the storage unit is a readable and writable storage medium and is used for storing detection data and preset data; the power supply unit specifically adopts a button cell, the power supply unit is used for supplying power to the MCU unit and the display, the display adopts a miniature liquid crystal display, data such as detection pressure difference, preset pressure difference and state reminding can be displayed, and the data are stored in the storage unit.

The control system is realized based on the following control method, the cover internal pressure and the cover external pressure are respectively detected by a cover internal pressure detection device 10-1 and a cover external pressure detection device 10-2, the detected data are sent to a digital-to-analog converter, the digital-to-analog converter converts an analog signal into a digital signal and sends the digital signal to an MCU unit, a pressure difference calculation unit calculates the current detected pressure difference and sends the calculated detected pressure difference data to a storage unit for real-time storage, an analysis unit calls the detected pressure difference data and preset pressure difference data in the storage unit for analysis and sends an analysis result to a display for display, specifically, when the detected pressure difference is more than or equal to the preset pressure difference, the situation shows that the filter element of the mask is seriously clogged, a state reminding function is to display a red light or to replace, when the detected pressure difference is less than the preset pressure difference, at this time, the dirty degree of the mask filter element is light, and the state reminding is to display a green light or to continue to use.

When the user needs to dismantle the filter element 8, the filter element 8 can be directly taken out from the round vent hole clamped with the filter element. The filter element 8 is made of common filter materials, so that the using area is small, the selling cost and the using cost of the filter element are lower than those of the conventional N95 and K95 masks, and the filter element can be born by common users.

Example 2

As shown in fig. 5, the cassette mode of the circular vent 7 and the filter element 8 of the mask body 1 can be as follows: the bottom of the round vent 7 close to one side in the cover is provided with a baffle 7-2, the surface of the filter element 8 is provided with a bonding groove 8-6, an exposed bonding leather strip 8-7 is bonded in the bonding groove 8-6, and the bonding leather strip 8-7 can be pulled open when the filter element needs to be replaced. Thereby dragging the filter element 8 to be taken out from the circular vent 7.

Furthermore, the side edge of the filter element 8 is also provided with a silica gel strip, and the silica gel strip has elasticity and large adhesion force, so that the gap between the filter element 8 and the circular vent 7 can be better sealed, and air leakage is prevented.

In addition, elastic cord 3 is all connected to the both sides edge of gauze mask body 1, and it has ear back pad 4 to bond on the elastic cord 3, and ear back pad 4 adopts silica gel to make, and when the gauze mask was worn to the user, the elastic cord that can relax caused the sense of pain of tightly tightening the ear, still felt comfortable when the user worn the gauze mask for a long time.

In addition, "state is reminded" still can be for pronunciation warning, specifically, when the dirty stifled serious of gauze mask filter core, remind "lovely user, should trade gauze mask cheerful" etc. through corresponding voice broadcast device and remind the statement.

The present invention can be advantageously realized according to the above-described embodiments. It should be noted that, based on the above structural design, in order to solve the same technical problems, some technical solutions without substantial features are made on the basis of the present invention, and the technical effects are the same as the present invention, so that they should also be within the protection scope of the present invention.

Claims

1. The utility model provides a removable filter core prevent haze gauze mask, includes gauze mask body, breather valve, elastic cord, ear back of the body gasket, circular blow vent, filter core, display, pressure differential detection detecting element and MCU unit, its characterized in that: the both sides of gauze mask body set up breather valve and display respectively, pressure difference detection detecting element sets up the edge at circular blow vent, the MCU unit sets up in the gauze mask body, pressure difference detection detecting element, display all with the display electricity is connected, the intermediate position department of gauze mask body is equipped with circular blow vent, the edge of circular blow vent is provided with a plurality of archs, the edge of filter core is provided with a plurality ofly and protruding matched with recess, through recess and protruding inseparable block are connected in order to realize being connected with dismantling of filter core and circular blow vent.

2. The haze-proof mask with the replaceable filter element according to claim 1, which is characterized in that: the circular vent is a vent which is formed by a metal ring and can be used for people to breathe, and the edge of the mask body is rolled and embedded into the metal ring.

3. The haze-proof mask with the replaceable filter element according to claim 1, which is characterized in that: the filter element is sequentially embedded with a spun-bonded non-woven fabric, 8-3 parts of an active carbon film, a melt-blown non-woven fabric and an antibacterial layer in the air suction direction.

4. The haze-proof mask with the replaceable filter element according to claim 1, which is characterized in that: the edge of the mask body is provided with a sewing turned edge, and the sewing turned edge is attached to the outline of the face of a human body; the mask body is made of polyethylene or polypropylene material, and can also be made of aluminum alloy material; the breather valve is a one-way valve and only allows gas to be discharged out of the mask but not to be inhaled into the mask.

5. The haze-proof mask with the replaceable filter element according to claim 2, which is characterized in that: the inner ring part of the circular vent is provided with a differential pressure detection unit, the differential pressure detection unit comprises an in-cover pressure detection device, an out-cover pressure detection device, a signal wire and a digital/analog converter, and the in-cover pressure detection device is connected with the inner ring part of the circular vent, is arranged at the upper part of the antibacterial layer and is used for detecting the in-cover pressure; the pressure detection device outside the cover is connected with the inner ring part of the circular vent, and is arranged on the upper part of the spunbonded non-woven fabric for detecting the pressure outside the cover, the pressure detection device inside the cover and the pressure detection device outside the cover are correspondingly connected with signal wires, the signal wires are arranged inside the mask body, and the signal wires are connected with a digital/analog converter.

6. The haze-proof mask with the replaceable filter element according to claim 5, wherein the haze-proof mask is characterized in that: the MCU unit comprises a pressure difference calculating unit and an analyzing unit, wherein the pressure difference calculating unit is used for calculating pressure difference and is connected with the digital-to-analog converter through a circuit, and the MCU unit is also connected with a storage unit and a power supply unit, wherein the storage unit is used for storing detection data and preset data; the power supply unit is used for supplying power to the MCU unit and the display, the display can display detection pressure difference, preset pressure difference and state reminding data, and the data are stored in the storage unit.

7. The haze-proof mask with the replaceable filter element according to claim 5, wherein the haze-proof mask is characterized in that: the MCU unit realizes control based on the following method: when the detected pressure difference is larger than or equal to the preset pressure difference, the state reminding is to display a red light or to replace, and when the detected pressure difference is smaller than the preset pressure difference, the state reminding is to display a green light or to continue to use.

8. The haze-proof mask with the replaceable filter element according to claim 1, which is characterized in that: the elastic bands are connected to the edges of the two sides of the mask body, ear back gaskets are bonded to the elastic bands, and the ear back gaskets are made of silica gel.