CN212235677U - Recyclable mask filter box and mask filtering system - Google Patents

Abstract

The utility model provides a but used repeatedly's gauze mask filter cartridge and gauze mask filtration system relates to health protection articles for use technical field. The recyclable mask filter box comprises a box body, wherein the front end of the box body is provided with a first interface detachably connected with a previous-stage filter box or a filter box cover and/or the rear end of the box body is provided with a second interface detachably connected with a next-stage filter box or a mask; a filter cartridge for filtering gas passing therethrough, the filter cartridge being removably connected to the cartridge body. The utility model discloses a but gauze mask filter cartridge and gauze mask filtration system of cyclic use can solve current gauze mask filtering capability singleness, and filterable harmful substance kind is few and disposable gauze mask is abandoned, causes the technical problem that the waste treatment cost is high.

Description

Recyclable mask filter box and mask filtering system

Technical Field

The utility model relates to a health protection articles for use technical field specifically is a but recycle gauze mask filter cartridge and gauze mask filtration system of circulated use.

Background

The mask is a sanitary article, is worn in the oral cavity and the nasal region of a human body when in use, and is used for filtering before air enters the oral cavity and the nose so as to prevent harmful dust, gas, smell, spray, virus, bacteria, suspended particles and the like from entering and exiting the oral cavity and the nose of a user.

The gauze mask that adopts at present will have filtering capability's filter core attached to the gauze mask main part usually, uses the box to wear the gauze mask main part that has the filter core at face, and the user is when breathing, and the outside air of gauze mask rethread user's mouth nose entering lung after the filter core filters. However, most of the existing masks adopt a single-function filter element, for example, a PM2.5 filter element is often adopted as a filter element for filtering particulate matters with particle size larger than 2.5 microns for masks capable of preventing haze, and for example, an activated carbon filter element is adopted for an activated carbon mask to filter irritant gases containing organic gases, acidic volatile matters, pesticides, SO2, Cl2 and the like. However, the air contains many kinds of pollutants, and the mask with only a single filtering function cannot completely filter the harmful substances in the air.

In addition, the filtering function of the filter element of the mask is gradually lost after the filter element is used for a period of time, so that the disposable mask is usually adopted at present, and the whole mask is discarded after the mask is used for a period of time. When the method is adopted, the resource waste is large, the treatment cost of the abandoned mask is high, and the environment pollution is easily caused in the treatment process.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a but recycle gauze mask filter cartridge and gauze mask filtration system for it is single to solve current gauze mask filtering capability, but filterable harmful substance kind is few and disposable gauze mask abandonment part is many, the technical problem that abandonment part treatment cost is high.

In a first aspect, the present invention provides a reusable mask filter cartridge, including:

the front end of the box body is provided with a first interface which is detachably connected with a previous stage filter box or a filter box cover, and/or the rear end of the box body is provided with a second interface which is detachably connected with a next stage filter box or a mask;

a filter cartridge for filtering gas passing therethrough, the filter cartridge being removably connected to the cartridge body.

Preferably, be equipped with limit structure on the box body, limit structure is used for injecing this level of filter core and preceding one-level filter core or the interval of back one-level filter core along box body thickness direction to form air current buffer space between adjacent two-stage filter core.

Preferably, the filter core is with the preceding terminal surface butt of box body, limit structure is the filter core separator of setting on the box body, the filter core separator is extended towards the back along box body thickness direction by the preceding terminal surface of box body and is predetermine length and form, the filter core separator is used for separating adjacent two-stage filter core when assembling with next stage box body and first predetermineeing the distance.

Preferably, the filter element separator comprises a plurality of separation strips, and the separation strips are used for separating the air flow buffer space to form a plurality of air flow channels extending along the thickness direction of the box body.

Preferably, the gauze mask filter cartridge still includes the fastener, be equipped with the recess on the lateral wall of box body, the border of filter core extends the chimb that forms along box body thickness direction, the chimb cover is established on the box body lateral wall, at least partly embedding of chimb in the recess, the fastener cover is established in the chimb outside and the relative position of recess in order to compress tightly at least partly of chimb in the recess.

Preferably, the first interface and the second interface are connected through a relative rotation preset angle in the first direction, and are disconnected through a relative rotation preset angle in the second direction, the first direction and the second direction are opposite directions, an auxiliary force application part is further arranged on the side wall of the box body, and the auxiliary force application part is used for driving one of the first interface and the second interface to rotate relative to the other one in the first direction or the second direction when being acted by external torque.

Preferably, one of the first interface and the second interface is a luer male buckle, and the other is a luer female buckle.

Preferably, the outer surface of the filter box is further provided with a signboard and/or a color identification layer, the signboard is provided with symbols and/or characters indicating the filter type of the filter box, and the color identification layer is used for displaying colors indicating the filter type of the filter box.

In a second aspect, the utility model provides a but recycle gauze mask filtration system, including the first aspect but recycle's gauze mask filter cartridge, just two are no less than to gauze mask filter cartridge's quantity, and wherein the filtering capability of filter core is inequality in two at least gauze mask filter cartridges, adjacent two can dismantle the connection through first interface and second interface between the filter cartridge.

Preferably, the mask filtering system comprises a dustproof filtering box, an N95 filtering box and a waterproof filtering box which are detachably connected in sequence.

Has the advantages that: the utility model discloses a but used repeatedly's gauze mask filter cartridge, gauze mask filtration system and gauze mask adopt filter core and box body detachable mode, only need according to in service behavior renew cartridge can, all the other parts of gauze mask can manifold cycles use, therefore the cost can be practiced thrift greatly to dumped part fewest. The unique waste part has a simple structure and a small volume, is convenient for centralized and unified treatment, can save cost and can effectively prevent pollution in the treatment process. The user also can change the filter core of different filtering capability according to the use scene of difference and need not change other parts of gauze mask, consequently can be very convenient expand the filtering capability of filter cartridge. Because the utility model discloses a filter cartridge has adopted the interface that can dismantle the connection, consequently can select the filter cartridge group of different functions to make up according to actual need, forms to have the different kinds of pollutants of the mouth filtration of multi-functional circulated use, makes the air that finally enters into user's lung obtain filtering more effectively.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, without creative efforts, other drawings can be obtained according to these drawings, and these drawings are all within the protection scope of the present invention.

Fig. 1 is a three-dimensional structure view of a reusable mask according to example 5 of the present invention;

fig. 2 is an exploded view of a reusable mask according to example 5 of the present invention;

fig. 3 is a schematic structural view of the filter cartridge of the present invention;

fig. 4 is an exploded view of the filter cartridge of the present invention;

fig. 5 is a front view of the filter cassette of the present invention;

fig. 6 is a schematic three-dimensional structure diagram of the box body of the filter box of the present invention;

FIG. 7 is a cross-sectional view of the cartridge body of the filter cartridge of the present invention;

FIG. 8 is a three-dimensional block diagram of a filtration system of the present invention comprising two filtration cartridges;

FIG. 9 is a cross-sectional view of a filtration system of the present invention comprised of two filter cartridges;

FIG. 10 is a three-dimensional block diagram of the face mask of the present invention;

fig. 11 is a three-dimensional structure view of the reusable mask with a logo plate according to the present invention.

Parts and numbering in the drawings: the filter cartridge 100, the cartridge body 110, the first interface 111, the second interface 112, the limiting structure 113, the front surface 1131, the air flow buffering space 114, the separating strip 115, the air flow channel 116, the side wall 117, the groove 1171, the auxiliary force applying component 118, the signboard 119, the filter element 120, the flange 121, the fastener 130, the mask 200, the bracket 210, the cover 220, the fixing component 230, and the nose pad 240.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. In case of conflict, the various features of the embodiments and examples of the present invention may be combined with each other and are within the scope of the present invention.

Example 1:

as shown in fig. 3 and 4, the present embodiment provides a reusable mask filter cartridge, comprising:

the front end of the box body 110 is provided with a first interface 111 detachably connected with the front-stage filter box 100 or the filter box 100 cover, and/or the rear end of the box body 110 is provided with a second interface 112 detachably connected with the rear-stage filter box 100 or the mask 200;

a filter cartridge 120, the filter cartridge 120 for filtering gas passing therethrough, the filter cartridge 120 being detachably coupled to the cartridge body 110; wherein the filter element 120 is configured to filter gas passing therethrough is: when the gas passes through the filter element 120, the dust in the gas, suspended particles, viruses, bacteria, toxic gases and other harmful substances which can enter the respiratory system of the human body are filtered by the filter element.

As shown in fig. 6 and 7, a limiting structure 113 is arranged on the box body 110, and the limiting structure 113 is used for limiting a distance between the current stage of filter element 120 and the previous stage of filter element 120 or the next stage of filter element 120 along the thickness direction of the box body 110, so as to form an airflow buffer space 114 between two adjacent stages of filter elements 120; the thickness direction of the case is the x direction in fig. 9.

The box body 110 can be integrally formed by adopting an injection molding process without weaving. The manufacturing process is simple, and the method is suitable for automatic and large-scale production and manufacturing.

As shown in fig. 8 and 9, the mask of the present embodiment can be used by connecting only one single filter cartridge 100, the filter cartridge 100 can be replaced at any time, the filter cartridge 100 with the same function can be replaced, the filter cartridge 100 with different functions can be replaced, or the filter cartridge 100 can be recycled and only the filter element 120 can be replaced.

The mask of the present embodiment may also be connected to a filtering system formed by a plurality of filtering cartridges 100 for use, and at this time, the mask of the present embodiment includes at least two filtering cartridges 100, wherein the filtering functions of the filter elements 120 in at least two filtering cartridges 100 are different, two adjacent filtering cartridges 100 are detachably connected through the first interface 111 and the second interface 112, and an airflow buffering space 114 is formed between two adjacent filter elements 120.

The filter cassette 100 of the present embodiment can be connected to other filter cassettes 100 at the front or rear end or both ends of the filter cassette 100 through the first interface 111 or the second interface 112, thereby forming a filter cassette 100 assembly or a filter system that can filter various kinds of harmful substances. Wherein the front end of the filter cartridge 100 refers to the end of the filter cartridge 100 facing away from the mask when the filter cartridge 100 is installed on the mask, and the rear end of the filter cartridge 100 refers to the end of the filter cartridge 100 facing toward the mask when the filter cartridge 100 is installed on the mask. When a plurality of filter cartridges 100 are combined together, a multi-stage filter system is formed, in which the filter cartridge 100 located at the front end, i.e., the filter cartridge 100 through which air passes first when it enters the mouth and nose through the entire mask, is the previous stage filter cartridge 100, and in contrast, the filter cartridge 100 located at the rear end, i.e., the filter cartridge 100 through which air passes after it enters the mouth and nose through the entire mask, is the next stage filter cartridge 100.

For example, a filter cassette 100 having a dust-proof function is connected to the front end of a filter cassette 100 having an anti-virus function conforming to the N95 standard, wherein the first interface 111 of the filter cassette 100 having the anti-virus function is connected to the second interface 112 of the filter cassette 100 having the dust-proof function. Then, a filter cassette 100 with waterproof and anti-foam functions is connected to the front end of the filter cassette 100 with anti-virus function conforming to the N95 standard, wherein the second interface 112 of the filter cassette 100 with anti-virus function is connected to the first interface 111 of the filter cassette 100 with waterproof and anti-foam functions. The three filter cartridges 100 constitute a filter assembly having a three-stage filter cartridge 100, and after the filter assembly is mounted on the mask body, the user inhales air, and then the outside air passes through the filter cartridge 100 having a dustproof function, the N95 filter cartridge 100 having an anti-virus function, and the filter cartridge 100 having a waterproof and anti-foam function enters the nose and mouth of the user. In this case, the filter cassette 100 having the dustproof function, the N95 filter cassette 100 having the antivirus function, and the filter cassettes 100 having the waterproof and anti-foam functions are the first stage filter cassette 100, the second stage filter cassette 100, and the third stage filter cassette 100, respectively. For the filter cassette 100 having the anti-virus function which meets the N95 standard, the filter cassette 100 having the dust-proof function is used as its preceding stage filter cassette 100, and the filter cassette 100 having the water-proof and anti-foam function is used as its succeeding stage filter cassette 100.

In the above-described example, when the filter assembly is mounted on the mask body, the filter cartridge 100 having the dustproof function is located at the foremost end, and can be used as the filter cartridge 100 and also as the end cap of the filter assembly, and in this case, the filter cartridge 100 may be provided with only the second port 112 connected to the next stage filter cartridge 100 without providing the first port 111 detachably connected to the previous stage filter cartridge 100. Wherein, the last stage filter cartridge 100 of the filter assembly can be connected with the mask body in a detachable way, and can also be directly manufactured with the mask body in an integrated forming way, when the last stage filter cartridge 100 is integrated with the mask body, the last stage filter cartridge 100 can also be only provided with the first interface 111 connected with the previous stage filter cartridge 100 and omit the second interface 112 connected with the next stage filter cartridge 100.

The combination of the filter cassettes 100 described above is merely an example to illustrate the connection relationship of the multi-stage filter cassettes 100, and in other examples, different combinations may be adopted, such as connecting a photocatalyst filter cassette 100 capable of degrading toxic gases to the front end of the dustproof filter cassette 100, or connecting a plasma filter cassette 100 capable of killing microorganisms between the N95 filter cassette 100 having the anti-virus function and the filter cassette 100 having the waterproof and anti-foam functions, or connecting a filter cassette 100 having the function of increasing fragrance to the rear end of the filter cassette 100 having the waterproof and anti-foam functions. The type and number of the filter cartridges 100 used in combination can be arbitrarily selected according to a specific use scenario, and is not limited herein.

The first interface 111 and the second interface 112 arranged on the box body 110 can adopt a unified standard interface, so that different filter boxes 100 can be connected or detached at will, and the front-back position relation of the combination can be changed at will, thereby greatly improving the application range and the adaptability of the filter boxes 100.

In the present embodiment, the filtering function of the filter cassette 100 is determined by the filtering function of the filter cartridge 120 mounted on the filter cassette 100. Because the filter element 120 and the box body 110 in this embodiment are detachably connected, different filter elements 120 can be selected according to the requirement in the filter cartridge 100 of this embodiment, so that the filter cartridge 100 can have different filtering functions. Moreover, the filter element 120 which is used for a longer time can be detached from the filter cartridge 100 in time, and then a new filter element 120 can be mounted on the filter cartridge 100, so that the filter element 120 can be replaced in time. The filter element 120 may be a non-woven fabric filter element 120, a spray-melt fabric filter element 120, a microorganism filter element 120, an anti-haze filter element 120, an activated carbon filter element 120, a waterproof filter element 120, a dustproof filter element 120, a graphene filter element 120, a plasma filter element 120, or the like, and the specific filter element 120 may be selected as needed, which is not limited herein.

In the present embodiment, the box body 110 is further provided with a limiting structure 113, and when a plurality of filter cartridges 100 are combined and connected, the limiting structure 113 can separate adjacent two stages of filter elements 120 by a certain distance, and an airflow buffer space 114 is formed between the adjacent two stages of filter elements 120. Thus, in the process of air entering the nose and mouth of the user from the outside of the mask, the air flow passes through only one layer of filter element 120 at a time, so that the resistance of the air flow entering the nose and mouth of the user is reduced. And the air flow does not pass through the filter element 120 and then enters the air flow buffering space 114. With the use of the user, the airflow buffer spaces 114 between the filter layers are filled with the air filtered by the pre-stage filter element 120, so that the user can easily suck the air filtered by multiple layers by sucking lightly. In addition, when a user inhales, a certain negative pressure is formed in the air flow buffer space 114, and the air flow is easier to pass through the filter element 120 under the driving action of the negative pressure. Therefore, compared with the previous method of stacking and attaching a plurality of filter elements 120, the filter cartridge 100 of the present embodiment can be combined as required, and the situation of unsmooth breathing caused by stacking of multiple layers is avoided.

Limiting structure 113 that sets up on box body 110 is the filter core separator that sets up on box body 110, the filter core separator is extended towards the back by the preceding terminal surface 1131 of box body 110 along box body 110 thickness direction and is predetermine length and form, the filter core separator is towards the one end of preceding one-level filter cartridge 100 with preceding one-level filter core 120 looks butt, and the relative other end is crossed filter core 120 looks butt with the back one-level.

In addition, the mask adopted before also has the condition that the gas or moisture exhaled by the user cannot be timely discharged to the outside of the mask due to the blocking of the multi-layer filter element 120 or the thicker filter element 120, so that the user is seriously uncomfortable. A one-way conduction breather valve is arranged on the mask, and gas can only be discharged from the breather valve but not enter the mask. Therefore, although the air entering the nose and mouth of the user can be filtered, the exhaled air can be well exhausted out of the mask, and discomfort of the user is relieved. However, since the gas to be discharged is not filtered, there is a possibility that the environment is polluted, and particularly, when the exhaled gas contains bacteria or viruses, the spread of diseases is easily caused.

With the filter cartridge 100 of the present embodiment, since the airflow buffering space 114 is formed between two adjacent filter elements 120, sufficient space is left on both sides of each filter element 120 after the filter cartridge 100 is assembled, and the resistance encountered when the exhaled air flows outwards is small, so that the exhaled air can rapidly enter the airflow buffering space 114 of the previous stage through the filter element 120 or be discharged outside the mask, and cannot be accumulated near the mouth and nose of the user. And the exhaled gas is discharged out of the mask after being filtered layer by layer, so that the environment is not polluted, pathogenic bacteria or viruses are not discharged, and the spread of diseases can be effectively avoided.

Because the filter cartridge 100 of the embodiment adopts the way that the filter element 120 and the cartridge body 110 are detachable, the filter cartridge 100 of the embodiment only needs to replace the filter element 120 according to the use condition when in use, and other parts of the mask can be recycled for many times, so that the waste parts are few, and the cost can be greatly saved. The unique waste part has a simple structure and a small volume, is convenient for centralized and unified treatment, can save cost and can effectively prevent pollution in the treatment process. The user can replace the filter element 120 with different filtering functions according to different use scenes without replacing other parts of the mask, so that the filtering function of the filter cartridge 100 can be conveniently expanded. Because the filter cartridge 100 of the present embodiment adopts the detachable connection interface, the filter cartridge 100 sets with different functions can be selected according to actual needs to be combined to form various multifunctional and multipurpose reusable masks. Thus, different kinds of pollutants can be filtered simultaneously after wearing the mask with the filter cartridge 100 of the present embodiment, so that the air finally entering the lungs of the user can be filtered more effectively. After the multifunctional filter cartridge 100 is connected together, an airflow buffering space 114 can be formed between two adjacent filter elements 120 by using the limiting structure 113 in this embodiment, and the airflow buffering space 114 is used to reduce the resistance when the airflow passes through the filter elements 120, so that the user can breathe more smoothly.

Example 2

As shown in fig. 7, 8 and 9, in this embodiment, the filter element 120 abuts against the front end surface 1131 of the box body 110, the limiting structure 113 is a filter element partition arranged on the box body 110, the filter element partition is formed by extending the front end surface 1131 of the box body 110 backward along the thickness direction of the box body 110 by a preset length, and the filter element partition is used for separating two adjacent stages of filter elements 120 by a first preset distance when assembled with the next stage of box body 110

The front end surface 1131 of the filter element partition is the front end surface 1131 of the box body 110, when two filter cartridges 100 are connected, the front stage filter element 120 of the two adjacent filter elements 120 is tightly attached to the front end surface 1131 of the filter element partition, the rear stage filter element 120 is tightly attached to the front end surface 1131 of the rear stage filter element partition by the rear end surface of the filter element partition, and the filter element partition acts on the spacing distance between the two adjacent filter elements 120 limited by the filter element partition due to the length of the front end surface 1131 extending along the thickness direction of the box body 110. By adopting the connection scheme, the spacing distance between two adjacent filter elements 120 can be accurately defined to form the airflow buffer space 114, and the filter elements 120 can be reliably installed on the box body 110 of the filter box 100. The first preset distance is a distance between the two stages of filter elements 120 in the thickness direction, the distance ranges from 9mm to 11mm, and when the distance is 9.5mm, the filtering effect and the breathing effect are optimal.

In addition, in the present embodiment, the filter element separator includes a plurality of separation strips 115, and the separation strips 115 are used for separating the air flow buffering space 114 to form a plurality of air flow channels 116 extending along the thickness direction of the box body 110.

The partition of the present embodiment adopts a structure of the partition strip 115, the partition strip 115 extends along a plane direction perpendicular to the thickness direction of the box body 110 to partition the airflow buffer space 114 into a plurality of small areas, and the areas are mutually partitioned to form the airflow channel 116. The air flow in the air flow buffer space 114 flows along the air flow passage 116 toward the front stage filter element 120 or the rear stage filter element 120. Therefore, the air flow entering the buffer space cannot flow in a large range along the direction vertical to the thickness direction of the box body 110 to influence the efficiency of the air flow entering and exiting the mask during breathing, and the air flow is smoother when passing through the buffer space.

In addition, in this embodiment, a heating device may be disposed in the airflow buffer space 114 to heat the airflow to kill bacteria or viruses mixed in the airflow. Wherein the heating means may employ heating wires distributed in the air flow buffering space 114. In this embodiment, after the airflow buffer space 114 is partitioned into the small areas by the partition bars 115, the airflow flowing through each small area may form a vortex-shaped airflow in the small area, and the airflow may be sufficiently heated in the limited buffer space by the heating wires distributed in the buffer space by the vortex-shaped airflow, so as to further improve the effect of killing bacteria and viruses.

The separating strips 115 include a plurality of first separating strips 115 radially distributed along the radial direction of the cross section of the box body 110 at the center of the box body 110 and a plurality of circular separating strips 115 with the center of the box body 110 as the center. By adopting the structure of the separating strip 115, the airflow channels 116 at the same radial position are in a system of shapes and sizes, and the airflow channels 116 at the same circumferential position are gradually increased from the center of the box body 110 to the edge of the box body 110, so that the airflow velocity in each area of the airflow buffer space 114 is more uniform, and the breathing of a mask wearer is smoother.

Example 3

In this embodiment, the first interface 111 and the second interface 112 are connected by a predetermined relative rotation angle in the first direction, and are disconnected by a predetermined relative rotation angle in the second direction, the first direction and the second direction are opposite directions, an auxiliary force application member 118 is further disposed on the sidewall 117 of the box body 110, the auxiliary force application member 118 is used for driving one of the first interface 111 and the second interface 112 to rotate in the first direction or the second direction relative to the other when being acted by an external moment, and a portion of the auxiliary force application member 118 capable of being stressed is a second predetermined distance from the rotation axis.

In this embodiment, the sidewall 117 of the box 110 is provided with the auxiliary force applying member 118, so that when two boxes 110 are connected, a user only needs to apply a force to the auxiliary force applying member 118 on the sidewall 117, and the auxiliary force applying member 118 drives the box 110 to rotate, so as to connect the first interface 111 and the second interface 112. When detaching the two cases 110, the user can also apply force to the auxiliary force applying member 118, so that the auxiliary force applying member 118 drives the cases 110 to rotate reversely to a position where the cases 110 can be detached. The angle of rotation in the first direction and the angle of rotation in the second direction may be set according to actual use conditions, and are not limited specifically here. Wherein the number of the auxiliary force applying members 118 may be one or more. For the convenience of connection and disassembly, two auxiliary force application members 118 may be symmetrically disposed with a rotation axis of the case 110 as a symmetry center.

As a preferred example, one of the first interface 111 and the second interface 112 is a luer male buckle, and the other is a luer female buckle. The adjacent filter boxes 100 are connected by luer buckles, so that the connection reliability is high, the air tightness is good, and the disassembly and the assembly are convenient.

In addition, the first interface 111 can be arranged on the outer side of the side wall 117 of the box body 110, and the second interface 112 can be arranged on the inner side of the side wall 117 of the box body 110, so that the connection and the disconnection of the first interface 111 and the second interface 112 are facilitated, and the accurate positioning of the adjacent two-stage filter box 100 during the assembly is also facilitated. In other embodiments, the first interface 111 may be disposed on the inner side of the sidewall 117 of the box body 110, and the second interface 112 may be disposed on the outer side of the sidewall 117 of the box body 110.

As shown in fig. 11, in this embodiment, the outer surface of the filter cartridge 100 is further provided with a signboard 119 and/or a color identification layer, wherein the signboard 119 displays symbols and/or characters indicating the filter type of the filter cartridge 100, and the color identification layer is used for displaying colors indicating the filter type of the filter cartridge 100.

The present embodiment applies different colors to the filter cartridges 100 with different filter functions, so that the user can quickly and accurately know the filter functions of the respective filter cartridges 100 to avoid confusion when selecting a filter cartridge 100 or replacing a filter cartridge 100. Furthermore, an identification plate 119 may be provided at a position where the filter cassette 100 is conspicuous, and the filter function of the filter cassette 100 may be marked with letters or symbols on the identification plate 119.

This can used repeatedly's gauze mask of implementation still includes fastener 130, be equipped with recess 1171 on the lateral wall 117 of box body 110, the edge of filter core 120 extends the chimb 121 that forms along box body 110 thickness direction, chimb 121 overlaps establishes on box body 110 lateral wall 117, at least a part embedding of chimb 121 in the recess 1171, fastener 130 overlaps establishes in the chimb 121 outside and the relative position of recess 1171 so that compress tightly at least a part of chimb 121 in the recess 1171.

Wherein the sidewall 117 of the case body 110 is a peripheral wall of the case body 110 extending in the thickness direction of the case body 110. Recess 1171 in sidewall 117 is formed by a depression into cassette body 110 from the surface of sidewall 117 facing away from the interior of cassette body 110. Wherein the cartridge 120 can be a laminar cartridge 120 wherein the recess 1171 can be an annular recess 1171 that encircles the periphery of the sidewall 117. When the filter cartridge 100 is assembled, the filter element 120 abuts against the front surface 1131 of the cartridge body 110, the flange 121 of the filter element 120 is just sleeved on the portion of the outer wall of the cartridge body 110 close to the front surface 1131 of the cartridge body 110, then the filter element 120 is embedded into the groove 1171, finally the fastening member 130 is sleeved on the outer surface of the flange 121, the flange 121 is tightly pressed in the groove 1171 by the fastening member 130, and finally the filter element 120 is tightly pressed on the front surface 1131 of the cartridge body 110 by the limit structure 113 of the previous stage of filter cartridge 100, so that the reliable connection of the cartridge body 110 is realized. Wherein the rim 121 may also be disposed in a corresponding annular shape with the recess 1171. The convex edge 121 can be further provided with a positioning groove 1171 matched with the groove, so that the positioning groove on the convex edge 121 can be embedded into the groove 1171 of the box body 110 during assembly, and then the fastening member 130 is sleeved in the positioning groove, so that the elastic fastening member 130 can be effectively prevented from sliding off the convex edge 121, and the connection between the filter element 120 and the filter box 100 is more reliable. The fastening member 130 may be an elastic fastening member 130, such as a rubber band, a rubber ring, an elastic band, a bandage, or other members having the property of generating elastic deformation and restoring elastic deformation. The resilient fastener 130 may also be endless. When in installation, the elastic fastening member 130 is expanded to a size that can be fitted over the outer wall of the flange 121, and then the elastic fastening member 130 is loosened to press the flange 121 in the groove 1171 by means of elastic restoring force. Other non-resilient fasteners 130 are possible, such as straps, cords, etc., as long as the rim 121 can be secured in the groove 1171.

Example 4

The present embodiment provides a reusable mask filtering system, which comprises at least two reusable masks, wherein the filtering functions of the filter elements 120 in at least two filter cartridges 100 are different, and two adjacent filter cartridges 100 are detachably connected through a first connector 111 and a second connector 112.

Limiting structure 113 is the filter core separator that sets up on box body 110, the filter core separator is extended towards the back by the preceding terminal surface 1131 of box body 110 along box body 110 thickness direction and predetermines length and form, the filter core separator is towards the one end of preceding one-level filter cartridge 100 with preceding one-level filter core 120 looks butt, and the relative other end is crossed filter core 120 looks butt with the back one-level.

The mask filtering system of the present embodiment is composed of the filter cartridges 100 of the previous embodiments, and each filter cartridge 100 is detachably connected to each other through the first interface 111 and the second interface 112. The filter cartridges 100 of the filtration system can be combined and replaced according to the filtration needs of the filtration system. The filter elements 120 in each filter cartridge 100 can also be easily removed and attached to allow for replacement of the filter elements 120 at any time, allowing for long term recycling of the filtration system.

The first filtering cassette 100 can be made into a filtering cassette 100 cover which is arranged at the foremost end of the whole filtering system, and the filtering cassette 100 at the last stage can be detachably connected with the first interface 111 arranged on the face mask 200 through the second interface 112, so that the filtering system can be conveniently connected with and detached from the face mask 200.

As a preferred example, the mask filtration system comprises a dustproof filter cartridge, an N95 filter cartridge and a waterproof filter cartridge which are detachably connected in sequence. The dustproof filter box, the N95 filter box and the waterproof filter box are respectively provided with a dustproof filter core, an N95 filter core and a waterproof filter core. By adopting the filtering system consisting of the filtering boxes, when a user breathes, inhaled gas sequentially passes through the three filtering boxes. When the gas passes through the dustproof filter box, impurities such as dust and dust in the gas are firstly filtered, suspended particles with the particle size of less than 2.5 micrometers in the gas are filtered when the gas passes through the N95 filter box, and moisture in the gas is filtered when the gas passes through the waterproof filter box

Example 5

As shown in fig. 1 and 2, the mask of the present embodiment mainly includes two parts, namely a mask 200 and a filter cartridge 100, the filter cartridge 100 is detachably connected to the mask 200, so that the filter cartridges 100 with different filtering functions can be selected according to different requirements for use to connect:

as shown in fig. 2, the mask 200 includes a bracket 210, a mask body 220 and a fixing member 230, the mask body 220 is used for fitting with the face to form a sealed space, the fixing member 230 is used for fixing the mask 200 on the head of a person, the mask body 220 is formed by extending the bracket 210 towards the side opposite to the filter cartridge 100, and one end of the bracket 210 facing the filter cartridge 100 is provided with a first interface 111 detachably connected with the filter cartridge 100. When the mask of the embodiment is used, the selected filter cartridge 100 or the filter system composed of a plurality of filter cartridges 100 is mounted on the bracket 210 of the mask 200 through the first interface 111 and the second interface 112, and then the mask body 220 of the mask 200 is closely attached to the face of the user, so that a closed space is formed at the nose and mouth of the user, and the nose and mouth of the user are effectively isolated from the outside. Finally, the mask 200 is secured to the user's head by the securing member 230.

In this embodiment, the mask 200 further includes a nose pad 240, wherein the nose pad 240 is formed by extending an edge of an end of the mask body 220 away from the frame 210 in a direction away from the frame 210. When the mask of this embodiment is worn, nose portion that the laminating that nose holds in the palm 240 can be fine still user effectively guarantees the gas tightness in nose annex region, also can avoid the mask body 220 can't cause the user uncomfortable with the nose laminating.

Further, the side of the face mask 200 of the present embodiment facing the filter cassette 100 is covered with a disposable protective film detachably attached to the face mask 200. As the face mask 200 surface may also be contaminated with bacteria or viruses during use. Therefore, in this embodiment, the surface of the face mask 200 is covered with a disposable protective film, and after the face mask 200 is used for a period of time, the protective film covering the surface is detached from the face mask 200, and then replaced with a new protective film for continuous use. An adhesive area can be arranged at the edge contour position of the face mask 200, the protective film is adhered to the outside of the face mask 200, the protective film is peeled off when the replacement time is needed, and then the new protective film is replaced.

In addition, the outer surface of the face mask 200 can be arranged into two layers, a cavity is formed between the two layers, the protective film is attached to one layer of the surface, the adsorption pores are reserved on the one layer of the surface, a part of air flow generated when a user inhales is led into the cavity, the air flow flows through the vicinity of the adsorption pores, and therefore when the air flow flows in the cavity, a certain negative pressure can be generated in the vicinity of the adsorption pores, and the protective film is adsorbed on the outer surface of the face mask 200 through the negative pressure in the vicinity of the pores.

The cover 220 may be made of silicone rubber, fluoro-rubber, or other soft and skin-friendly materials. The fixing member 230 may employ an elastic band, a cord, or the like. Hooks may be provided on the bracket 210 away from the filter cartridge 100, and the fasteners may be removably attached to the bracket 210 via the hooks.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. But used gauze mask filter cartridge repeatedly, its characterized in that includes:

the front end of the box body is provided with a first interface which is detachably connected with a previous stage filter box or a filter box cover, and/or the rear end of the box body is provided with a second interface which is detachably connected with a next stage filter box or a mask;

a filter cartridge for filtering gas passing therethrough, the filter cartridge being removably connected to the cartridge body.

2. The mask filter cartridge of claim 1 wherein the cartridge body is provided with a position-limiting structure, the position-limiting structure is used to limit the distance between the filter element of the current stage and the filter element of the previous stage or the filter element of the next stage along the thickness direction of the cartridge body, so as to form an air flow buffering space between the adjacent two stages of filter elements.

3. The reusable mask filter cartridge of claim 2 wherein the filter cartridge abuts the front face of the cartridge body, the limiting structure is a filter cartridge spacer disposed on the cartridge body, the filter cartridge spacer is formed by extending a predetermined length from the front face of the cartridge body rearward along the thickness direction of the cartridge body, and the filter cartridge spacer is configured to separate two adjacent stages of filter cartridges by a first predetermined distance when assembled with the next stage of cartridge body.

4. The reusable mask filter cartridge of claim 3 wherein said cartridge spacer comprises a plurality of dividing strips for dividing said air flow buffer space into a plurality of air flow channels extending in the thickness direction of the cartridge body.

5. The mask filter cartridge of claim 4, further comprising a fastening member, wherein a groove is formed on the sidewall of the case, the edge of the filter element extends along the thickness direction of the case to form a flange, the flange is sleeved on the sidewall of the case, at least a portion of the flange is embedded into the groove, and the fastening member is sleeved on the outer side of the flange opposite to the groove to compress at least a portion of the flange in the groove.

6. The reusable mask filter cartridge of claim 1 wherein the first port and the second port are connected by a predetermined angle of relative rotation in a first direction and disconnected by a predetermined angle of relative rotation in a second direction, the first direction being opposite to the second direction, the sidewall of the cartridge body further comprising an auxiliary force applying member for driving one of the first port and the second port to rotate in the first direction or the second direction relative to the other when subjected to an external torque.

7. The reusable respirator filter cartridge of claim 6, wherein one of said first and second interfaces is a luer male snap and the other is a luer female snap.

8. The reusable respirator filter cartridge of any one of claims 1 to 7, wherein the filter cartridge further comprises a logo plate and/or a color identification layer on the outer surface thereof, wherein the logo plate displays symbols and/or text indicating the type of filtration of the filter cartridge, and the color identification layer displays a color indicating the type of filtration of the filter cartridge.

9. A recyclable mask filtering system, comprising recyclable mask filtering boxes according to any one of claims 1 to 8, wherein the number of the mask filtering boxes is not less than two, wherein the filtering functions of the filter elements in at least two mask filtering boxes are different, and two adjacent filtering boxes are detachably connected through a first interface and a second interface.

10. The reusable mask filtration system of claim 9 wherein said mask filtration system comprises a dust filtration cassette, an N95 filtration cassette and a water filtration cassette removably connected in series.

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