Filter cartridge and protective device comprising same

Abstract

The utility model relates to the technical field of protective articles, in particular to a filter cartridge and a protective device comprising the filter cartridge, and aims to solve the problem that a vacuum area exists at the top of an existing poison filter cartridge, so that the poison filter effect is influenced. The filter cartridge comprises a cartridge body and an adsorption material, an airflow channel is formed in the cartridge body, an air inlet and an air outlet are formed in the cartridge body, the two ends of the airflow channel communicate with the air inlet and the air outlet correspondingly, and the airflow channel is filled with the adsorption material. At least one part of the airflow channel extends in the first direction in the flowing direction of the pollution gas, and the first direction is parallel to the gravity direction of the adsorption material. According to the utility model, pollution gas can flow along the gas flow channel and extend into the adsorption material along the gravity direction vertical to the adsorption material, so that the pollution gas is prevented from being discharged from the gas outlet through a vacuum area due to the existence of the vacuum area at the top of the gas flow channel, and the filtering effect of the filtering box is prevented from being influenced; and the use safety of the filter cartridge is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of protective articles, and specifically provides a filter box and a protective device comprising the filter box. Background Art

[0002] The gas filter box is one of the important components of the gas mask in labor protection products. It is a device that removes dust and toxic and harmful gases in the air for human breathing through the principles of physical adsorption and chemical reaction.

[0003] The existing gas filter box directly fills the activated carbon in the box body, with an air inlet on one side of the box body and an air outlet on the other side. However, since there are gaps between the activated carbon particles, as the product vibrates, the gaps between the activated carbon particles gradually become smaller, thereby forming a vacuum area on the top of the box body. Since there is no activated carbon in the vacuum area, the breathing resistance in the vacuum area is the lowest, which will cause the polluted gas to enter the breathing mask through the vacuum area, seriously affecting the filtering effect of the gas filter box. Summary of the invention

[0004] The utility model aims to solve the above technical problem, that is, to solve the problem that the existing gas filter box has a vacuum area on the top which affects the gas filtering effect of the gas filter box.

[0005] In a first aspect, the utility model provides a filter box, which includes: a box body, in which an air flow channel is arranged, an air inlet is formed on a first end surface of the box body, an air outlet is formed on a second end surface of the box body, and both ends of the air flow channel are respectively connected to the air inlet and the air outlet; and an adsorbent material, which is filled in the air flow channel and is used to adsorb harmful substances in the polluted gas; wherein, when the filter box filters the polluted gas, at least a portion of the air flow channel extends along a first direction along the direction of flow of the polluted gas, and the first direction is parallel to the gravity direction of the adsorbent material.

[0006] In the preferred technical solution of the above-mentioned filter box, the filter box also includes a partition member arranged in the box body, and the partition member includes at least one partition plate arranged parallel to the first direction, and the partition plate divides the internal space of the box body into at least two cavities, and the multiple cavities are connected in sequence to form the airflow channel.

[0007] In the preferred technical solution of the above-mentioned filter box, the partition component includes a baffle and a partition plate, the baffle divides the space in the box body into a first chamber and a second chamber, the partition plate is arranged in the first chamber and / or the second chamber, a first air flow channel is formed in the first chamber, and a second air flow channel is formed in the second chamber, and the first end surface is provided with an air outlet cavity at a position corresponding to the air outlet, the number of the air inlets is two and the two air inlets are located on both sides of the air outlet cavity, the two air inlets are respectively connected to the first end of the first air flow channel and the first end of the second air flow channel, and the second end of the first air flow channel and the second end of the second air flow channel are both connected to the air outlet cavity.

[0008] In the preferred technical solution of the above-mentioned filter box, the partition component includes a partition plate, which divides the space in the box body into a first cavity and a second cavity, the first cavity and the second cavity are interconnected to form the air flow channel, the air inlet is located at the top of the first cavity and is connected to the first cavity, and the air outlet is located at the top of the second cavity and is connected to the second cavity.

[0009] In the preferred technical solution of the above-mentioned filter box, the box body includes a base plate and a cover plate, the partition member is located between the base plate and the cover plate, and the base plate, the cover plate and the partition member together form the air flow channel, the air inlet is arranged on the cover plate, and the air outlet is arranged on the base plate.

[0010] In the preferred technical solution of the above-mentioned filter box, the partition member is fixedly connected to or integrally formed with the cover plate, the base plate is provided with a snap-in protrusion at a position corresponding to the partition member, and the partition member is provided with a snap-in groove matched with the snap-in protrusion, and when installed, the snap-in protrusion is located in the snap-in groove to fix the partition member on the base plate.

[0011] In a preferred technical solution of the above-mentioned filter box, a accommodating cavity is provided in the box body, and the accommodating cavity forms the air flow channel, wherein the projection of the air inlet in the first direction is lower than the projection of the air outlet in the first direction; or, the projection of the air inlet in the first direction is higher than the projection of the air outlet in the first direction.

[0012] In the preferred technical solution of the above-mentioned filter box, a blocking filter component is arranged in the air inlet and / or the air outlet, and the blocking filter component is arranged to allow air flow in and out of the air flow channel and filter the air flow, and the blocking filter component is also arranged to be able to block the adsorption material from flowing out of the air flow channel.

[0013] In a preferred technical solution of the above filter box, the filter box further comprises a dust filter component, the dust filter component is arranged on a side of the box body close to the first end surface and an air outlet channel of the dust filter component is connected to the air inlet.

[0014] In a second aspect, the utility model provides a protective device, which includes any one of the filter boxes introduced above.

[0015] When the above technical solution is adopted, by arranging the airflow channel to extend at least partially along the first direction along the direction of flow of the polluted gas, when the filter box filters the polluted gas, the polluted gas can flow along the airflow channel and extend into the adsorption material in a direction perpendicular to the gravity direction of the adsorption material, thereby avoiding the polluted gas being discharged from the air outlet through the vacuum area due to the vacuum area at the top of the airflow channel, thereby avoiding affecting the filtering effect of the filter box, and greatly improving the safety of the filter box.

[0016] Furthermore, by setting up a partition component, on the one hand, the polluted gas can flow in the vertical direction along the air flow channel, avoiding the filtering effect of the filter box being affected by the vacuum area on the top of the box body; on the other hand, the extension length of the air flow channel can be extended, so that the polluted gas can fully contact with the adsorption material, which can not only increase the filtering area of ​​the filter box, but also improve the utilization rate of the adsorption material and extend the service life of the filter box.

[0017] Furthermore, by setting the number of air inlets to two, the space in the box can be fully utilized, further improving the utilization rate of the adsorption material. At the same time, the filtration resistance can be greatly reduced, further improving the user experience.

[0018] Furthermore, compared with configuring the box body as an integrated structure, configuring the box body to include a bottom plate and a cover plate can reduce the difficulty of manufacturing the box body and improve the production efficiency of the filter box.

[0019] Furthermore, compared with the form in which the partition is connected to the base plate or the cover plate by fasteners, the use of fasteners can be reduced by setting the partition to be connected to the base plate by snap-fitting, thereby further improving the production efficiency of the box body. At the same time, it can also improve the sealing of the airflow channel and further improve the filtering effect.

[0020] Furthermore, by configuring the partition member to include a partition plate, the filter box can be distributed vertically, and the length of the airflow channel can be extended, extending the path of the polluted gas in the airflow channel, thereby improving the utilization rate of the adsorption material and the filtration efficiency of the filter box.

[0021] Furthermore, by making the projection of the air inlet in the first direction lower than the projection of the air outlet in the first direction, or making the projection of the air inlet in the first direction higher than the projection of the air outlet in the first direction, it is possible to prevent the polluted gas entering the air flow channel from the air inlet from being discharged from the air outlet through the vacuum area on the top of the box body, thereby avoiding affecting the filtering effect of the filter box. At the same time, the path of the air flow channel can be made longer, and the flow path of the polluted gas after entering the air flow channel through the air inlet is longer, thereby improving the utilization rate of the adsorption material and further improving the filtering efficiency of the filter box.

[0022] Furthermore, by setting up a blocking filter component, when the air flow enters the air flow channel through the air inlet, the blocking filter component can first perform primary filtration on the polluted air. At the same time, the blocking filter component can also block the adsorption material from flowing out of the air flow channel, thereby preventing the adsorption material from flowing out of the box body. By setting up an air inlet mounting groove and an air outlet mounting groove, the blocking filter component can be easily installed at the air inlet or air outlet, thereby improving the installation efficiency.

[0023] Furthermore, by setting up a dust filter component, the dust in the polluted gas can be first filtered out by the dust filter component, and then enter the air flow channel through the air inlet for filtration. This not only improves the filtering effect of the polluted gas, but also extends the service life of the adsorption material, further improving the user experience.

[0024] In addition, the protective device further provided by the utility model on the basis of the above-mentioned technical solution includes the filter box introduced above, and thus has the beneficial effects of the above-mentioned filter box. Compared with the protective device before the improvement, the protective device of the utility model has better filtering effect, better safety in use, longer service life of the filter box, and better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0026] Figure 1 It is a structural schematic diagram of the filter box of the utility model;

[0027] Figure 2 yes Figure 1 Schematic diagram of the structure after the dust filter cover and dust filter cotton are hidden;

[0028] Figure 3 yes Figure 1 Schematic diagram of the structure behind the hidden dust filter component Figure 1 ;

[0029] Figure 4 yes Figure 1 Schematic diagram of the structure behind the hidden dust filter component Figure 2 ;

[0030] Figure 5 yes Figure 1 Schematic diagram of the structure behind the hidden dust filter component Figure 3 ;

[0031] Figure 6 This is a schematic diagram of the structure of the cover plate of Example 1 of the utility model Figure 1 ;

[0032] Figure 7 This is a schematic diagram of the structure of the cover plate of Example 1 of the utility model Figure 2 ;

[0033] Figure 8 This is a schematic diagram of the structure of the cover plate of Example 1 of the utility model Figure 3 , which shows a schematic diagram of the structure of the air guide component in the air flow channel;

[0034] Fig. 9 It is a structural schematic diagram of the bottom plate of Example 1 of the utility model;

[0035] Fig.10 It is a structural schematic diagram of a cover plate of Example 2 of the utility model;

[0036] Fig.11 It is a structural schematic diagram of a box body of Example 3 of the utility model;

[0037] Fig.12 yes Fig.11 Schematic diagram of the cross-sectional structure along line AA.

[0038] List of reference numerals:

[0039] 1. Box body; 10. Air flow channel; 101. First air flow channel; 102. Second air flow channel; 103. First cavity; 104. Second cavity; 11. Bottom plate; 110. Snap-fit ​​protrusion; 111. Air outlet; 12. Cover plate; 121. Air inlet; 122. Support structure; 130. Snap-fit ​​groove; 131. Baffle; 132. Partition plate; 14. Guide member; 15. Air outlet cavity; 16. Air inlet mounting groove; 17. Air outlet mounting groove; 21. Dust filter; 22. Dust filter cover; 231. Air inlet channel; 232. Air outlet channel. DETAILED DESCRIPTION

[0040] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0041] It should be noted that in the description of the present invention, the terms "inside" and "outside" and other terms indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0042] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Based on the problems mentioned in the background technology, during the use of the existing filter box, there are gaps between the activated carbon particles. As the filter box is used, the gaps between the activated carbon particles gradually become smaller, resulting in gaps at the top of the filter box. The gaps are not filled with activated carbon particles, forming a vacuum area. Since the breathing resistance here is small, the polluted gas can be easily discharged from the air outlet through the vacuum area, resulting in a reduction in the filtering effect of the filter box, affecting the user's safety.

[0044] See also Figures 1 to 5 , Figure 1 It is a structural schematic diagram of the filter box of the utility model; Figure 2 yes Figure 1 Schematic diagram of the structure after the dust filter cover and dust filter cotton are hidden; Figure 3 yes Figure 1 Schematic diagram of the structure behind the hidden dust filter component Figure 1 ; Figure 4 yes Figure 1 Schematic diagram of the structure behind the hidden dust filter component Figure 2 ; Figure 5 yes Figure 1 Schematic diagram of the structure behind the hidden dust filter component Figure 3 .

[0045] like Figures 1 to 5 As shown, the filter box of the utility model includes a box body 1 and an adsorption material (not shown in the figure) arranged in the box body 1, an air flow channel 10 is arranged in the box body 1, an air inlet 121 is formed on the first end surface of the box body 1, and an air outlet 111 is formed on the second end surface of the box body 1, both ends of the air flow channel 10 are respectively connected to the air inlet 121 and the air outlet 111, and the adsorption material is arranged in the air flow channel 10.

[0046] In the case where the filter box filters the polluted gas, at least a portion of the airflow channel 10 extends along a first direction along the flow direction of the polluted gas, and the first direction is parallel to the gravity direction of the adsorption material.

[0047] Through such a configuration, when the filter box filters the polluted gas, the polluted gas can flow along the airflow channel 10 and extend into the adsorption material in a direction perpendicular to the gravity of the adsorption material, thereby avoiding the polluted gas being discharged from the air outlet 111 through the vacuum area due to the vacuum area at the top of the airflow channel 10, thereby avoiding affecting the filtering effect of the filter box, and greatly improving the safety of the filter box.

[0048] It should be noted that, in actual applications, those skilled in the art may set the adsorption material to activated carbon particles, or, may set the adsorption material to alumina particles, or, may set the adsorption material to any other possible form, etc. Such adjustments and changes to the specific setting type of the adsorption material do not deviate from the principle and scope of the present utility model, and should be included in the protection scope of the present utility model.

[0049] Preferably, the adsorbent material is activated carbon particles.

[0050] It should be noted that the present invention does not impose any special limitation on the specific arrangement of the airflow channel 10, as long as at least a portion of the airflow channel 10 extends along the first direction along the direction of flow of the polluted gas, etc. Such adjustments and changes to the specific arrangement of the airflow channel 10 do not deviate from the principle and scope of the present invention, and should be included in the protection scope of the present invention.

[0051] The specific embodiments of the air flow channel 10 are described in detail below in conjunction with the following embodiments.

[0052] Embodiment 1:

[0053] Continue reading Figures 1 to 5 , and then see Figure 6 and Figure 7 , Figure 6 The structure of the cover plate 12 of the embodiment 1 of the utility model is shown in FIG. Figure 1 ; Figure 7 The structure of the cover plate 12 of the embodiment 1 of the utility model is shown in FIG. Figure 2 .

[0054] like Figures 1 to 7 As shown, a partition member is arranged in the box body 1 of the utility model, and the partition member includes at least one partition plate 132 arranged parallel to the first direction. The partition plate 132 divides the internal space of the box body 1 into at least two cavities connected in sequence, and multiple cavities are connected in sequence to form an airflow channel 10.

[0055] Through such an arrangement, on the one hand, the polluted gas can flow in the vertical direction along the air flow channel 10, avoiding the influence of the filtering effect of the filter box on the vacuum area at the top of the box body 1; on the other hand, the extension length of the air flow channel 10 can be extended so that the polluted gas can fully contact with the adsorption material, which can not only increase the filtering area of ​​the filter box, but also improve the utilization rate of the adsorption material and extend the service life of the filter box.

[0056] It should be noted that the present invention does not impose any special limitation on the specific number of air inlets 121. For example, the number of air inlets 121 can be set to only one, or the number of air inlets 121 can be set to two, or the number of air inlets 121 can be set to multiple, and so on. Such adjustments and changes to the specific number of air inlets 121 do not deviate from the principle and scope of the present invention, and should be included in the protection scope of the present invention.

[0057] Preferably, if Figure 6 to Figure 7 As shown, the partition member also includes a baffle 131, which divides the space in the box body 1 into a first chamber and a second chamber. The first chamber and the second chamber are both connected to the air outlet 111. There are two partition plates 132, and the two partition plates 132 are respectively arranged in the first chamber and the second chamber. A first airflow channel 101 is formed in the first chamber, and a second airflow channel 102 is formed in the second chamber.

[0058] An air outlet cavity 15 is provided on the first end surface at a position corresponding to the air outlet 111. There are two air inlets 121, and the two air inlets 121 are located on both sides of the air outlet cavity 15. The two air inlets 121 are respectively connected to the first end of the first air flow channel 101 and the first end of the second air flow channel 102. The second end of the first air flow channel 101 and the second end of the second air flow channel 102 are both connected to the air outlet cavity 15.

[0059] By such an arrangement, the number of the air inlets 121 is reduced to two, which can fully utilize the space in the box body 1 and further improve the utilization rate of the adsorption material. At the same time, it can also greatly reduce the filtering resistance and further enhance the user experience.

[0060] It should be noted that, in actual applications, those skilled in the art may arrange the two air inlets 121 to be centrally symmetrical with the air outlet cavity 15 as the center, or arrange the two air inlets 121 to be axially symmetrical with the air outlet cavity 15 as the axis, or arrange the two air inlets 121 to be randomly distributed on both sides of the air outlet cavity 15, and so on. Such adjustments and changes to the specific distribution methods of the two air inlets 121 do not deviate from the principle and scope of the present utility model, and should be included in the protection scope of the present utility model.

[0061] Preferably, the two air inlets 121 are arranged to be centrally symmetrical with the air outlet cavity 15 as the center.

[0062] It should be noted that the partition plate 132 is not limited to being disposed in the first chamber and the second chamber. For example, the partition plate 132 may be disposed only in the first chamber, or the partition plate 132 may be disposed only in the second chamber. Such adjustment and change of the specific location of the partition plate 132 does not deviate from the principle and scope of the present invention and should be included in the protection scope of the present invention. Of course, preferably, the partition plate 132 is disposed in both the first chamber and the second chamber.

[0063] It should also be noted that the partition plate 132 in the first chamber and the second chamber is not limited to being set as one. For example, multiple partition plates 132 can be set in the first chamber and / or the second chamber, etc. Such flexible adjustment and change do not deviate from the principle and scope of the utility model and should be included in the protection scope of the utility model. Of course, preferably, the partition plate 132 in the first chamber and the second chamber is set as one.

[0064] It should be noted that, in actual applications, those skilled in the art may configure the first end of the partition plate 132 to be connected to the inner wall of the box body 1, and configure the second end of the partition plate 132 to not be in contact with the inner wall of the box body 1, so that two adjacent cavities are interconnected at the second end of the partition plate 132, or, a hole may be provided on the partition plate 132, so that two adjacent cavities are interconnected at the hole, and so on. Such flexible adjustments and changes do not deviate from the principle and scope of the utility model, and should be included in the protection scope of the utility model.

[0065] Preferably, if Figure 6 to Figure 7 As shown, the first end of the partition plate 132 is configured to be connected to the inner wall of the box body 1 , and the second end of the partition plate 132 is configured not to contact the inner wall of the box body 1 , and two adjacent cavities are connected to each other at the second end of the partition plate 132 .

[0066] Next Read Figure 8 , Figure 8 This is a schematic diagram of the structure of the cover plate of Example 1 of the utility model Figure 3 , which shows a schematic structural diagram of the air guide component in the air flow channel.

[0067] Preferably, if Figure 8 As shown, the filter box further includes a flow guiding member 14 , which is disposed at a corner of the air flow channel 10 and is used to guide the air flow in the air flow channel 10 .

[0068] By providing the guide component 14, when the airflow flows along one of the cavities in the airflow channel 10, the guide component 14 can guide the airflow to another cavity connected thereto, thereby increasing the airflow velocity and reducing the breathing resistance. At the same time, providing the guide component 14 can also improve the utilization rate of the adsorption material in the box body, thereby avoiding the existence of a dead corner 218 in the airflow channel 210, which causes the adsorption material in the dead corner 218 to be unable to be fully utilized, thereby further improving the user experience.

[0069] Specifically, the flow guide member 14 is a flow guide plate.

[0070] It should be noted that, in actual applications, those skilled in the art may configure the box body 1 as an integrated structure, or may configure the box body 1 to include a bottom plate 11 and a cover plate 12, wherein the bottom plate 11 and the cover plate 12 together form an air flow channel 10, etc. Such adjustments and changes to the specific structural form of the box body 1 do not deviate from the principle and scope of the present utility model and should be included in the protection scope of the present utility model.

[0071] Continue reading Figures 1 to 7 , and then see Fig. 9 , Fig. 9 It is a structural schematic diagram of the bottom plate of Example 1 of the utility model.

[0072] Preferably, if Figures 1 to 9 As shown, the box body 1 includes a bottom plate 11 and a cover plate 12, a partition member is located between the bottom plate 11 and the cover plate 12, and the bottom plate 11, the cover plate 12 and the partition member together form an air flow channel 10, an air inlet 121 is arranged on the cover plate 12, and an air outlet 111 is arranged on the bottom plate 11.

[0073] By such a configuration, compared with configuring the box body 1 as an integrated structure, configuring the box body 1 to include the bottom plate 11 and the cover plate 12 can reduce the difficulty of manufacturing the box body 1 and improve the production efficiency of the filter box.

[0074] It should be noted that, in actual applications, those skilled in the art may arrange the partition member to be fixed to the base plate 11 and / or the cover plate 12 by fasteners, or, may arrange the partition member to be bonded to the base plate 11 and / or the cover plate 12, or, may arrange the partition member to be snap-connected to the base plate 11 and / or the cover plate 12, and so on. Such adjustments and changes to the specific fixing method of the partition member on the base plate 11 and / or the cover plate 12 do not deviate from the principle and scope of the present utility model, and should be included in the protection scope of the present utility model.

[0075] Preferably, if Figures 6 to 9As shown, the partition member is integrally formed with the cover plate 12, a snap-fitting protrusion 110 is provided on the base plate 11 at a position corresponding to the partition plate, and a snap-fitting groove 130 matched with the snap-fitting protrusion 110 is provided on the partition plate. When installed, the snap-fitting protrusion 110 is located in the snap-fitting groove 130 to fix the partition member on the base plate 11.

[0076] Through such an arrangement, compared with the arrangement in which the partition member is connected to the base plate 11 or the cover plate 12 by fasteners, the use of fasteners can be reduced by arranging the partition member to be connected to the base plate 11 by snap-fitting, thereby further improving the production efficiency of the box body 1. At the same time, the sealing performance of the airflow channel 10 can also be improved, thereby further improving the filtering effect.

[0077] Preferably, if Figure 3 and Figure 4 As shown, the filter box further includes a pre-filter component (not shown in the figure), and a support structure 122 is provided on a side of the cover plate 12 away from the partition plate, and the support structure 122 is used to support the pre-filter component.

[0078] By providing a pre-filtering component, it is convenient to pre-filter the polluted air through the pre-filtering component.

[0079] It should be noted that, in actual applications, those skilled in the art may configure the support structure 122 as a support bar, or may configure the support member as a support column, or may configure the support member into any other possible form, etc. Such adjustments and changes to the specific structural type of the support structure 122 do not deviate from the principle and scope of the present utility model, and should be included in the protection scope of the present utility model.

[0080] Preferably, the support structure 122 comprises support bars.

[0081] Embodiment 2:

[0082] Next Read Fig.10 , Fig.10 It is a schematic structural diagram of the cover plate 12 of Example 2 of the present utility model.

[0083] like Fig.10 As shown, the partition component of the utility model includes a partition plate 132, which divides the box body 1 into a first cavity 103 and a second cavity 104 that are interconnected. The first cavity 103 and the second cavity 104 are interconnected to form an air flow channel 10, wherein the air inlet 121 is located at the top of the first cavity 103 and is connected to the first cavity 103, and the air outlet 111 is located at the top of the second cavity 104 and is connected to the second cavity 104.

[0084] Through such an arrangement, the filter boxes can be distributed vertically, and the length of the airflow channel 10 can be extended, thereby extending the travel path of the polluted gas in the airflow channel 10, thereby improving the utilization rate of the adsorption material and the filtering efficiency of the filter boxes.

[0085] It should be noted that the specific structural form of the partition plate 132 of this embodiment and the specific connection method between the partition plate 132 and the box body 1 are the same as those in Embodiment 1, and will not be repeated here.

[0086] Embodiment 3:

[0087] Next Read Fig.11 and Fig.12 , Fig.11 It is a structural schematic diagram of the box body 1 of Example 3 of the utility model; Fig.12 yes Fig.11 Schematic diagram of the cross-sectional structure along line AA.

[0088] like Fig.11 and Fig.12 As shown, a accommodating cavity is provided in the box body 1, and an air flow channel 10 is formed in the accommodating cavity. The projection of the air inlet 121 in the first direction is lower than the projection of the air outlet 111 in the first direction, or the projection of the air inlet 121 in the first direction is higher than the projection of the air outlet 111 in the first direction.

[0089] Through such a configuration, the polluted gas that enters the air flow channel 10 through the air inlet 121 can be prevented from being discharged from the air outlet 111 through the vacuum area on the top of the box body 1, thereby avoiding affecting the filtering effect of the filter box. At the same time, the path of the air flow channel 10 can be made longer, and the flow path of the polluted gas after entering the air flow channel 10 through the air inlet 121 can be longer, thereby improving the utilization rate of the adsorption material and further improving the filtering efficiency of the filter box.

[0090] It should be noted that, in actual applications, those skilled in the art may set the projection of the air inlet 121 in the first direction to be higher than the projection of the air outlet 111 in the first direction, or may set the projection of the air inlet 121 in the first direction to be lower than the projection of the air outlet 111 in the first direction, and so on. Such adjustments and changes to the specific setting positions of the air inlet 121 and the air outlet 111 do not deviate from the principle and scope of the present utility model, and should be included in the protection scope of the present utility model.

[0091] In a specific embodiment, the air inlet 121 is located at the bottom of the first end surface, the air outlet 111 is located at the top of the second end surface, and the projection of the air inlet 121 in the first direction is lower than the projection of the air outlet 111 in the first direction.

[0092] In another specific embodiment, the air inlet 121 is located at the top of the first end surface, the air outlet 111 is located at the bottom of the second end surface, and the projection of the air inlet 121 in the first direction is higher than the projection of the air outlet 111 in the first direction.

[0093] Preferably, if Figure 6 , Figure 7 and Fig.10 As shown, a blocking filter component is provided in the air inlet 121 and / or the air outlet 111 , which is configured to allow airflow to enter and exit the airflow channel 10 and filter the airflow, and is also configured to block the adsorption material from flowing out of the airflow channel 10 .

[0094] By setting up a blocking filter component, when the airflow enters the airflow channel 10 through the air inlet 121, the blocking filter component can first perform primary filtration on the polluted air. At the same time, the blocking filter component can also block the adsorption material from flowing out of the airflow channel 10, thereby preventing the adsorption material from flowing out of the box body 1.

[0095] It should be noted that, in actual applications, those skilled in the art may arrange the blocking filter component to be fixed at the air inlet 121 or the air outlet 111 by fasteners, or, may arrange the blocking filter component to be fixed at the air inlet 121 or the air outlet 111 by gluing, or, may arrange the blocking filter component to be fixed at the air inlet 121 or the air outlet 111 by snap-fitting, and so on. Such adjustments and changes to the specific fixing method of the blocking filter component at the air inlet 121 and the air outlet 111 do not deviate from the principle and scope of the present utility model, and should be included in the protection scope of the present utility model.

[0096] Preferably, an air inlet mounting groove 16 is provided on the first end face at a position corresponding to the air inlet 121, and an air outlet mounting groove 17 is provided on the first end face at a position corresponding to the air outlet 111, and a blocking filter component is provided in the air inlet mounting groove 16 and / or the air outlet mounting groove 17.

[0097] By providing the air inlet installation groove 16 and the air outlet installation groove 17 , it is possible to facilitate the installation of the blocking filter component at the air inlet 121 or the air outlet 111 , thereby improving the installation efficiency.

[0098] It should be noted that, in actual applications, those skilled in the art may set the blocking filter component to filter cotton, or, may set the blocking filter component to a filter net, or, may set the blocking filter component to any other possible form, etc. Such adjustments and changes to the specific setting type of the blocking filter component do not deviate from the principle and scope of the present utility model, and should be included in the protection scope of the present utility model.

[0099] Preferably, the blocking filter component is filter cotton.

[0100] It should be noted that, in actual applications, technicians in this field can set the filter cotton into a sheet structure, or, can set the filter cotton into a multi-layer structure formed by repeatedly folding a sheet material, and so on. Such adjustments and changes to the specific structural type of the filter cotton do not deviate from the principle and scope of the present utility model, and should be included in the protection scope of the present utility model.

[0101] Preferably, the filter cotton is a multi-layer structure formed by repeatedly folding a sheet material (not shown in the figure).

[0102] Through such an arrangement, compared with arranging the filter cotton into a sheet structure, arranging the filter cotton into a multi-layer structure formed by repeatedly folding the sheet material can increase the primary filtering effect of the filter cotton on the polluted gas and further improve the service life of the filter box.

[0103] It should be noted that, in actual applications, those skilled in the art may only provide an air inlet mounting groove 16 at a position corresponding to the air inlet 121, and accordingly, only provide a blocking filter component at the air inlet 121, or only provide an air outlet mounting groove 17 at a position corresponding to the air outlet 111, and accordingly, only provide a blocking filter component at the air outlet 111, or, simultaneously provide an air inlet mounting groove 16 at a position corresponding to the air inlet 121, and provide an air outlet mounting groove 17 at a position corresponding to the air outlet 111, and simultaneously provide a blocking filter component at the air inlet 121 and the air outlet 111, and etc. Such adjustments and changes to the specific setting positions of the blocking filter components do not deviate from the principle and scope of the present utility model, and should be included in the protection scope of the present utility model.

[0104] Preferably, an air inlet mounting groove 16 is provided at a position corresponding to the air inlet 121 , an air outlet mounting groove 17 is provided at a position corresponding to the air outlet 111 , and blocking filter components are provided at the air inlet 121 and the air outlet 111 .

[0105] Preferably, the filter box of the present invention further comprises a dust filter component arranged on the box body 1 , the filter element component is arranged on a side of the box body 1 close to the first end surface and the air outlet channel 232 of the dust filter component is connected to the air inlet 121 .

[0106] By setting up a dust filter component, the dust in the polluted gas can be first filtered out by the dust filter component, and then enter the air flow channel 10 through the air inlet 121 for filtration. This can not only improve the filtering effect of the polluted gas, but also extend the service life of the adsorption material, further improving the user experience.

[0107] It should be noted that, in actual applications, those skilled in the art may configure the dust filter component to include a dust filter net 21, a dust filter cover 22, and dust filter cotton arranged between the dust filter net 21 and the dust filter cover 22, or, the dust filter component may be configured as a dust filter cover 22 and dust filter cotton arranged in the dust filter cover 22, or, the dust filter component may be configured in any other possible form, etc. Such adjustments and changes to the specific setting type of the dust filter component do not deviate from the principle and scope of the present utility model, and should be included in the protection scope of the present utility model.

[0108] Preferably, if Figure 1 and Figure 2 As shown, the dust filtering component includes a dust filter net 21, a dust filter cover 22 and dust filter cotton arranged between the dust filter net 21 and the dust filter cover 22, wherein the dust filter net 21 is arranged on the side of the cover plate 12 away from the partition, the dust filter cover 22 is provided with an air inlet channel 231, and the dust filter net 21 is formed with an air outlet channel 232.

[0109] In addition, the utility model also provides a protective device, which includes any one of the filter boxes introduced above.

[0110] It should be noted that the protective device can be set as a protective mask, that is, the filter box is applied to the protective mask, or the protective device can be set as an electric respirator, that is, the filter box is applied to the electric respirator, and so on. Such adjustments and changes to the specific setting types of the protective device do not deviate from the principle and scope of the present utility model and should be included in the protection scope of the present utility model.

[0111] Preferably, the protective device is an electric ventilator, and the filter box is applied to the electric ventilator.

[0112] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A filter box, characterized in that: The filter box includes: a box body, in which an air flow channel is arranged, an air inlet is formed on a first end surface of the box body, an air outlet is formed on a second end surface of the box body, and both ends of the air flow channel are respectively connected to the air inlet and the air outlet; and an adsorbent material, which is filled in the air flow channel and is used to adsorb harmful substances in the polluted gas; wherein, when the filter box filters the polluted gas, at least a portion of the air flow channel extends along a first direction along the direction of flow of the polluted gas, and the first direction is parallel to the gravity direction of the adsorbent material.

2. The filter box according to claim 1, characterized in that: The filter box also includes a partition member arranged in the box body, and the partition member includes at least one partition plate arranged parallel to the first direction. The partition plate divides the internal space of the box body into at least two cavities, and a plurality of cavities are connected in sequence to form the airflow channel.

3. The filter box according to claim 2, characterized in that: The partition component includes a baffle and a partition plate, the baffle divides the space in the box body into a first chamber and a second chamber, the partition plate is arranged in the first chamber and / or the second chamber, a first air flow channel is formed in the first chamber, and a second air flow channel is formed in the second chamber, the first end surface is provided with an air outlet cavity at a position corresponding to the air outlet, the number of the air inlets is two and the two air inlets are located on both sides of the air outlet cavity, the two air inlets are respectively connected to the first end of the first air flow channel and the first end of the second air flow channel, and the second end of the first air flow channel and the second end of the second air flow channel are both connected to the air outlet cavity.

4. The filter box according to claim 2, characterized in that: The partition member includes a partition plate, which divides the space in the box body into a first cavity and a second cavity. The first cavity and the second cavity are connected to each other to form the air flow channel. The air inlet is located at the top of the first cavity and is connected to the first cavity. The air outlet is located at the top of the second cavity and is connected to the second cavity.

5. The filter box according to claim 2, characterized in that: The box body includes a bottom plate and a cover plate, the partition member is located between the bottom plate and the cover plate, and the bottom plate, the cover plate and the partition member together form the air flow channel, the air inlet is arranged on the cover plate, and the air outlet is arranged on the bottom plate.

6. The filter box according to claim 5, characterized in that: The partition member is fixedly connected to or integrally formed with the cover plate, the base plate is provided with a snap-in protrusion at a position corresponding to the partition member, the partition member is provided with a snap-in groove matched with the snap-in protrusion, and when installed, the snap-in protrusion is located in the snap-in groove to fix the partition member on the base plate.

7. The filter box according to claim 1, characterized in that: The box body is provided with a accommodating cavity, the accommodating cavity forms the air flow channel, wherein the projection of the air inlet in the first direction is lower than the projection of the air outlet in the first direction; or the projection of the air inlet in the first direction is higher than the projection of the air outlet in the first direction.

8. The filter box according to claim 1, characterized in that: The air inlet and / or the air outlet is provided with a blocking filter component, which is configured to allow airflow to enter and exit the airflow channel and filter the airflow, and is also configured to block the adsorption material from flowing out of the airflow channel.

9. The filter cartridge according to any one of claims 1 to 8, characterized in that: The filter box further comprises a dust filter component, which is arranged on a side of the box body close to the first end surface and an air outlet passage of the dust filter component is communicated with the air inlet.

10. A protective device, characterized in that: The protective device comprises the filter box according to any one of claims 1 to 9.

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