Filter core filtering structure and water purification device

Abstract

The embodiment of the application discloses a filter core filtering structure and a water purification device, the filter core filtering structure comprises a first filter core module, the first filter core module comprises a first filter core framework and a composite filter core main body, the composite filter core main body comprises a first filter layer and a second filter layer which are arranged around the first filter core framework in sequence, the second filter layer comprises first folded cotton which is folded by a first cotton body, and the folding direction of the first folded cotton is the axial direction of the first filter core framework, so that the first folded cotton presents a multilayer structure which is arranged in a stacked mode along the circumferential direction of the first filter core framework. The technical scheme can greatly improve the filtering efficiency of the filter core filtering structure, and the filter core filtering structure has better filtering effect.

Description

Technical Field

[0001] This application relates to the field of water purification technology, and in particular to a filter cartridge filtration structure and a water purification device. Background Technology

[0002] In modern society, water purification devices are highly favored for their ability to purify and improve water quality, and are widely used in homes, offices, and public places. With the increasing severity of water quality problems, the demand for water purification devices has risen rapidly, making them one of the essential devices for ensuring safe and healthy drinking water. Generally speaking, the core component of a water purification device is the filter cartridge structure. When external water enters the device, it is primarily filtered through the filter cartridge structure to ultimately produce drinking water that meets drinking standards.

[0003] In related technologies, the filter structure of water purification devices is limited by the miniaturized design of the water purification device itself, resulting in a limited contact area between the filter body and the water to be filtered. Consequently, the existing filter structure of water purification devices has low filtration efficiency and poor filtration effect. Utility Model Content

[0004] In view of this, this application provides a filter cartridge filtration structure and a water purification device to improve the technical problem that the filter cartridge filtration structure of existing water purification devices is limited by the miniaturized structural design of the water purification device itself, resulting in a limited contact area between the filter cartridge body and the water to be filtered, which in turn leads to low filtration efficiency and poor filtration effect.

[0005] To achieve one or more of the above objectives or other objectives, this application proposes a filter cartridge filtration structure for use in a water purification device. The filter cartridge filtration structure includes a first filter cartridge module, which includes a first filter cartridge frame and a composite filter cartridge body. The composite filter cartridge body includes a first filter layer and a second filter layer arranged sequentially around the first filter cartridge frame. The second filter layer includes a first folded cotton formed by folding a first cotton body, and the folding direction of the first folded cotton is the axial direction of the first filter cartridge frame, so that the first folded cotton presents a multi-layer structure stacked along the circumference of the first filter cartridge frame.

[0006] Optionally, in some embodiments of this application, the first cotton body is a single-layer cotton body formed of polypropylene cotton or polyester cotton, or the first cotton body is a double-layer cotton body formed by laminating polypropylene cotton and polyester cotton; and / or,

[0007] The first filter layer is made of nanofiber cotton.

[0008] Optionally, in some embodiments of this application, the second filter layer further includes a second folded cotton formed by folding the second cotton body, and the folding direction of the second folded cotton is the axial direction of the first filter element skeleton, so that the second folded cotton presents a multi-layer structure stacked along the circumferential direction of the first filter element skeleton.

[0009] The second folded cotton and the first folded cotton are arranged sequentially around the first filter layer, and the thickness of the second folded cotton in the radial direction of the first filter element skeleton is less than the thickness of the first folded cotton in the radial direction of the first filter element skeleton.

[0010] Optionally, in some embodiments of this application, the composite filter element body further includes a third filter layer, which is sandwiched between the first filter element frame and the first filter layer, and the third filter layer is arranged around the first filter element frame.

[0011] Optionally, in some embodiments of this application, the third filter layer is any one of non-woven fabric, metal mesh, or plastic mesh.

[0012] Optionally, in some embodiments of this application, the first filter module further includes a first module housing, the first module housing having a first receiving cavity, the surface of the first module housing being respectively provided with a first water inlet and a first water outlet communicating with the first receiving cavity, the first filter frame and the composite filter body being housed in the first receiving cavity, and the composite filter body abutting against the first water inlet and the first water outlet respectively.

[0013] Optionally, in some embodiments of this application, the filter element filtration structure further includes a second filter element module, wherein the second inlet of the second filter element module is connected to the first outlet.

[0014] The second module housing of the second filter element module is offset from the first module housing in the radial direction of the first filter element skeleton, and the second module housing and the first module housing are fastened to each other.

[0015] Optionally, in some embodiments of this application, the second module housing has a built-in second receiving cavity, and the surface of the second module housing is respectively provided with a second water outlet and a second water inlet communicating with the second receiving cavity;

[0016] The second filter module further includes a second filter frame and a carbon rod filter body disposed in the second receiving cavity. The carbon rod filter body is arranged around the second filter frame and abuts against the second inlet and the second outlet respectively.

[0017] In addition, to achieve one or more of the above objectives or other objectives, this application also proposes a water purification device, which includes the above-described filter cartridge structure.

[0018] Optionally, in some embodiments of this application, the water purification device further includes a device housing and a water circuit module. The filter element structure and the water circuit module are respectively installed in the device housing from top to bottom, and the bottom end of the filter element structure is supported on the water circuit module. The top end of the filter element structure is fastened to the top side of the device housing by at least one screw structure.

[0019] The filter cartridge filtration structure and water purification device provided in this application, through the aforementioned structural arrangement, utilize a composite filter structure composed of a first filter layer and a second filter layer in the composite filter cartridge body of the first filter module. This dual filtration enhances the filtration effect of the water to be filtered. Simultaneously, the second filter layer includes a first folded cotton formed by folding a first cotton body, with the folding direction aligned with the axial direction of the first filter cartridge skeleton. This results in a multi-layered structure where the first folded cotton is radially stacked along the first filter cartridge skeleton. Consequently, the second filter layer maximizes the contact area between itself and the water to be filtered within a limited space, significantly improving the filtration efficiency and achieving a superior filtration effect. Therefore, this technical solution effectively addresses the technical problem of existing water purification devices where the filter cartridge filtration structure is limited by the miniaturized design of the device itself, resulting in a limited contact area between the filter cartridge body and the water to be filtered, leading to low filtration efficiency and poor filtration effect. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] in:

[0022] Figure 1 This is a schematic diagram of the water purification device in the embodiments of this application.

[0023] Figure 2 for Figure 1 A partial structural diagram of the water purification device shown.

[0024] Figure 3 for Figure 1 The diagram shows the structural diagram of the filter element of the water purification device.

[0025] Figure 4 for Figure 3 The diagram shows a top view of the filter element filtration structure.

[0026] Figure 5 for Figure 4 The diagram shows a cross-sectional view of the filter element structure taken along section line AA.

[0027] Figure 6 for Figure 5 The diagram shows a top view of the first filter element skeleton and the composite filter element body of the filter element filtration structure.

[0028] Figure 7 for Figure 4 The diagram shows a cross-sectional view of the filter element structure taken along the BB section line.

[0029] Figure label:

[0030] 1. Water purification device; 10. Filter cartridge structure; 11. First filter module; 111. First filter cartridge frame; 112. Composite filter cartridge body; 1121. First filter layer; 1122. Second filter layer; 1123. Third filter layer; 113. First module shell; 12. Second filter module; 121. Second filter cartridge frame; 122. Carbon rod filter cartridge body; 123. Second module shell; 20. Module shell; 30. Water circuit module. Detailed Implementation

[0031] To better understand and implement this application, the technical solutions in this application will be clearly and completely described below with reference to the accompanying drawings.

[0032] In the description of this application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0034] In one embodiment, see Figure 3 , Figure 4 , Figure 5 and Figure 6 This application provides a filter element filtration structure 10, which mainly includes a first filter element module. The first filter element module includes a first filter element skeleton 111 and a composite filter element body 112. The composite filter element body 112 includes a first filter layer 1121 and a second filter layer 1122 arranged sequentially around the first filter element skeleton 111. The second filter layer 1122 includes a first folded cotton formed by folding a first cotton body, and the folding direction of the first folded cotton is the axial direction of the first filter element skeleton 111, so that the first folded cotton presents a multi-layer structure stacked along the circumferential direction of the first filter element skeleton 111.

[0035] It should be noted that the filter element filtration structure 10 of this application embodiment is mainly applied to devices with water filtration and purification functions, such as water purification devices 1. That is, after external water enters these devices, it can be filtered primarily through the filter element filtration structure 10 of this application embodiment to ultimately produce drinking water that meets drinking standards for users. Generally, the aforementioned first filter element frame 111 can specifically be a plastic frame or a ceramic frame, and specifically, it can be a hollow cylindrical structure. Therefore, the axial direction of the aforementioned first filter element frame 111 can specifically be... Figure 5 The radial direction of the first filter element frame 111 mentioned above, as shown in the up-down direction, can specifically be: Figure 5 The left and right directions are shown. The folding direction of the first folded cotton mentioned above is the axial direction of the first filter element skeleton 111, so that the first folded cotton presents a multi-layer structure stacked along the circumference of the first filter element skeleton 111. Specifically, the first cotton body can be folded repeatedly along the circumference of the first filter element skeleton 111, and the crease formed by each fold extends along the axial direction of the first filter element skeleton 111, so as to finally form as shown. Figure 6 The multi-layer structure shown is arranged circumferentially along the first filter element skeleton 111.

[0036] In this way, the filter element filtration structure 10 of this application embodiment, through the above-described structural configuration, uses a composite filtration structure composed of a first filter layer 1121 and a second filter layer 1122 in the composite filter element body 112 of its first filter module 11. Therefore, it can improve the filtration effect by performing dual filtration on the water to be filtered. At the same time, the second filter layer 1122 also includes a first folded cotton formed by folding a first cotton body, and the folding direction of the first folded cotton is the axial direction of the first filter element skeleton 111, so that the first folded cotton presents a multi-layer structure stacked along the circumferential direction of the first filter element skeleton 111. Therefore, the second filter layer 1122 can maximize the contact area between itself and the water to be filtered within a limited space, thereby significantly improving the filtration efficiency of the filter element filtration structure 10 and giving the filter element filtration structure 10 a better filtration effect.

[0037] In some examples, such as Figure 5 As shown, the first cotton body mentioned above can specifically be a single-layer cotton body formed of polypropylene cotton (i.e., PP cotton) or polyester cotton (i.e., PET cotton). In this way, by utilizing the inherent toughness and fatigue resistance of the polypropylene cotton or polyester cotton structure, it can be bent and folded multiple times without breaking, while the entire material structure can adapt to changes in shape during folding and maintain its performance. This allows for maximizing the contact area between the material and the water to be filtered within a limited space, thereby significantly improving the filtration efficiency of the filter element 10 and giving it a superior filtration effect.

[0038] It should be noted that the first cotton body in this example is preferably a single-layer cotton body formed of polypropylene cotton (i.e., PP cotton). This is because the single-layer cotton body formed of polypropylene cotton (i.e., PP cotton) can remove almost 100% of the visible and invisible suspended particles in the water, such as mud, rust, colloids, red worms, and microplastics, by virtue of its huge surface area and micron-level pores, ensuring that the effluent is clear and transparent without any turbidity.

[0039] In some examples, the first cotton body mentioned above can specifically be a double-layered cotton body formed by stacking polypropylene cotton (i.e., PP cotton) and polyester cotton (i.e., PET cotton). In this way, through the above structural arrangement, the first cotton body can combine the advantages of both polypropylene cotton (i.e., PP cotton) and polyester cotton (i.e. PET cotton) to further enhance its filtration capacity.

[0040] In some examples, the second filter layer 1122 further includes a second folded cotton formed by folding a second cotton body, with the folding direction of the second folded cotton being axial with that of the first filter element frame 111, so that the second folded cotton presents a multi-layer structure stacked circumferentially along the first filter element frame 111. The second folded cotton and the first folded cotton are arranged sequentially around the first filter layer 1121, and the radial thickness of the second folded cotton in the first filter element frame 111 is less than the radial thickness of the first folded cotton in the first filter element frame 111. Thus, through the above structural arrangement, two different combinations of folded filter structures can be formed by the second filter layer 1122, so that the second filter layer 1122 itself can complete a double filtration effect, thereby further improving the filtration effect of this filter element filter structure 10.

[0041] It should be noted that the structure of the second cotton body in this example is similar to that of the first cotton body mentioned in the previous example, and will not be repeated here.

[0042] In some examples, such as Figure 5As shown, the first filter layer 1121 is made of nanofiber cotton. Thus, through the above structural arrangement, a composite filter element body 112 combining folded cotton and nanofiber cotton can be effectively formed. The folded cotton performs initial filtration of the water to be filtered, removing large particulate impurities such as sediment, rust, insect eggs, colloids, and suspended solids. Then, the nanofiber cotton further filters the pre-filtered water, efficiently removing bacteria, microplastics, colloids (even smaller ones), and some viruses (depending on the membrane pore size; for example, reaching the 0.1 nanometer level can remove most viruses).

[0043] It should be noted that, since the first filter layer 1121 in this example is nanofiber cotton, the pores of the nanofiber membrane are extremely small and easily clogged by large particles. Therefore, the folded cotton structure of the first filter layer 1121 also has the following functions: 1. Protecting the nanofiber cotton (i.e., preventing the pores of the nanofiber membrane from being clogged by large particles) and reducing the burden on the nanofiber cotton, allowing it to focus on dealing with smaller and more dangerous pollutants, such as bacteria, viruses (some models can filter), microplastics, etc., thereby greatly extending its service life. 2. Increasing dirt-holding capacity; the folded structure gives the folded cotton a huge dirt-holding space, which can accommodate a large amount of impurities without causing an excessively rapid increase in pressure drop (water resistance).

[0044] In some examples, such as Figure 5 As shown, the composite filter element body 112 also includes a third filter layer 1123, which is sandwiched between the first filter element frame 111 and the first filter layer 1121, and surrounds the first filter element frame 111. Thus, through the above structure, the composite filter element body 112 forms a triple filtration structure design, further improving the filtration efficiency of the composite filter element body 112 and giving it a better filtration effect. Furthermore, the third filter layer 1123 can be any one of non-woven fabric, metal mesh, or plastic mesh. Thus, through the above structural arrangement, the third filter layer 1123, in addition to having better filtration performance, can also improve the mechanical strength of the first filter element frame 111.

[0045] In some examples, such as Figure 3 , Figure 4 and Figure 5As shown, the first filter module also includes a first module housing 20113, which has a first receiving cavity. The surface of the first module housing 20113 is respectively provided with a first inlet and a first outlet communicating with the first receiving cavity. The first filter element frame 111 and the composite filter element body 112 are housed and installed in the first receiving cavity, with the composite filter element body 112 abutting against the first inlet and the first outlet, respectively. Thus, the structure of the first receiving cavity of the first module housing 20113 provides a relatively sealed installation environment for the composite filter element body 112, thereby providing a certain degree of sealing protection and extending the service life of the composite filter element body 112.

[0046] It should be noted that, in this example, the first water inlet and the first water outlet are preferably located on the same side surface of the first module housing 20113, that is, they can be respectively located on the bottom side surface of the first module housing 20113. When the bottom side surface is a circular surface, the two should be located on different semicircles.

[0047] In some examples, such as Figure 3 , Figure 4 and Figure 5 As shown, the filter element filtration structure 10 also includes a second filter element module, with its second inlet connected to the first outlet. The second module housing 20123 and the first module housing 20113 of the second filter element module are radially offset in the first filter element frame 111, and are tightly connected to each other. Thus, through this structural arrangement, water filtered by the first filter element module can re-enter the second filter element module for further filtration, thereby further improving the filtration effect of the filter element filtration structure 10. Simultaneously, because the second module housing 20123 and the first module housing 20113 of the second filter element module are radially offset in the first filter element frame 111, the arrangement of the first and second filter element modules becomes more compact, meeting the miniaturized structural layout requirements of the corresponding water purification device 1.

[0048] It should be noted that the filter element body inside the second filter element module in this example can either adopt the same filter element body structure as the first filter element module to further improve the filtration effect of this filter element filtration structure 10 by repeatedly filtering the filtered water, or adopt a different filter element body structure from the first filter element module according to actual filtration needs, so as to form a richer filtration combination with the first filter element module, thereby further improving the filtration effect of this filter element filtration structure 10 while meeting specific filtration requirements. In this example, the second module housing 20123 and the first module housing 20113 are radially offset from each other in the first filter element skeleton 111, specifically referring to... Figure 2 and Figure 4 As shown, the line connecting the center of the first module housing 20113 and the center of the second module housing 20123 is set at a certain angle to the length or width direction of the corresponding water drinking device, rather than coinciding.

[0049] In some examples, such as Figure 3 , Figure 4 and Figure 6 As shown, the second module housing 20123 has a built-in second receiving cavity, and the surface of the second module housing 20123 is respectively provided with a second water outlet and a second water inlet communicating with the second receiving cavity. The second filter module also includes a second filter frame 121 and a carbon rod filter body 122 housed and installed in the second receiving cavity. The carbon rod filter body 122 is arranged around the second filter frame 121 and abuts against the second water inlet and the second water outlet respectively. In this way, through the above structural arrangement, the second filter module can be a carbon rod filter structure. After obtaining pure and impurity-free filtered water through the first filter module, it is filtered again by the carbon rod filter body 122 of the second filter module to effectively remove chlorine taste and increase minerals, thereby greatly improving the taste and odor of the water.

[0050] It should be noted that the carbon rod filter element 122 in this example is mainly composed of micron-sized activated carbon particles and a binder, forming extremely complex and fine pore channels inside. When water flows from the outside of the filter element to the inner wall (outside to inside) or from the inside to the outside (inside to outside, depending on the design), pollutants larger than these pores, such as suspended solids, particulate impurities, colloids, and some bacteria and parasites (such as Cryptosporidium and Giardia), are directly trapped on the surface or inside of the filter element. Simultaneously, the activated carbon surface can also act as a catalyst for certain higher oxidation states of substances. For example, it can catalytically reduce strongly oxidizing residual chlorine (Cl2, HClO) in water to odorless chloride ions (Cl-), thereby completely removing the chlorine taste.

[0051] In one embodiment, such as Figure 1 and Figure 2 As shown, this application also proposes a water purification device 1, which mainly includes the filter element filtration structure 10 of the above embodiments. Thus, through the above structural arrangement, the water purification device 1 is provided with the filter element filtration structure 10 of the above embodiments, thereby maximizing the contact area between the second filter layer 1122 of the first filter module 11 of the filter element filtration structure 10 and the water to be filtered within a limited space, thereby significantly improving the filtration efficiency of the filter element filtration structure 10 and giving it a better filtration effect.

[0052] It should be noted that the water purification device 11 in this application embodiment mainly refers to a device with water filtration and purification function, including but not limited to water purifiers and other devices.

[0053] In some examples, such as Figure 1 and Figure 2 As shown, the water purification device 1 also includes a device housing and a water circuit module 30. The filter element filtration structure 10 and the water circuit module 30 are respectively installed in the device housing from top to bottom. The bottom end of the filter element filtration structure 10 is supported by the water circuit module 30, and the top end of the filter element filtration structure 10 is fastened to the top side of the device housing by at least one screw structure (not shown). Thus, through the above structural arrangement, in addition to relying on the water circuit module 30 at its bottom for structural support, the fastening connection between the filter element filtration structure 10 and the top side of the device housing via the screw structure reduces the supporting burden of the water circuit module 30 on the filter element filtration structure 10. At the same time, the entire filter element filtration structure 10 forms a top-to-bottom structural layout, facilitating filter element replacement from the top side of the device housing.

[0054] It should be noted that the water circuit module 30 in this example may specifically include an inlet pipe and an outlet pipe. The inlet pipe is connected to the first inlet of the first filter module, one end of the outlet pipe is connected to the second outlet of the second filter module, and the other end of the outlet pipe is connected to the hot water supply pipe and the cold water supply pipe respectively through a switching valve.

[0055] The technical means disclosed in this application are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.

Claims

1. A filter cartridge filtration structure, used in a water purification device, characterized in that, The filter element filtration structure includes a first filter element module, which includes a first filter element skeleton and a composite filter element body. The composite filter element body includes a first filter layer and a second filter layer arranged sequentially around the first filter element skeleton. The second filter layer includes a first folded cotton formed by folding a first cotton body, and the folding direction of the first folded cotton is the axial direction of the first filter element skeleton, so that the first folded cotton presents a multi-layer structure stacked along the circumference of the first filter element skeleton.

2. The filter element filtration structure as described in claim 1, characterized in that, The first cotton body is a single-layer cotton body formed of polypropylene cotton or polyester cotton, or, the first cotton body is a double-layer cotton body formed by laminating polypropylene cotton and polyester cotton; and / or, The first filter layer is made of nanofiber cotton.

3. The filter element filtration structure as described in claim 1, characterized in that, The second filter layer also includes a second folded cotton formed by folding a second cotton body, and the folding direction of the second folded cotton is the axial direction of the first filter element skeleton, so that the second folded cotton presents a multi-layer structure stacked along the circumferential direction of the first filter element skeleton. The second folded cotton and the first folded cotton are arranged sequentially around the first filter layer, and the thickness of the second folded cotton in the radial direction of the first filter element skeleton is less than the thickness of the first folded cotton in the radial direction of the first filter element skeleton.

4. The filter element filtration structure as described in claim 1, characterized in that, The composite filter element body also includes a third filter layer, which is sandwiched between the first filter element frame and the first filter layer, and the third filter layer is arranged around the first filter element frame.

5. The filter element filtration structure as described in claim 4, characterized in that, The third filter layer can be any one of non-woven fabric, metal mesh, or plastic mesh.

6. The filter element filtration structure as described in any one of claims 1-5, characterized in that, The first filter module further includes a first module housing, which has a first receiving cavity. The surface of the first module housing is respectively provided with a first water inlet and a first water outlet communicating with the first receiving cavity. The first filter frame and the composite filter body are housed in the first receiving cavity, and the composite filter body abuts against the first water inlet and the first water outlet respectively.

7. The filter element filtration structure as described in claim 6, characterized in that, The filter element filtration structure further includes a second filter element module, and the second inlet of the second filter element module is connected to the first outlet. The second module housing of the second filter element module is offset from the first module housing in the radial direction of the first filter element skeleton, and the second module housing and the first module housing are fastened to each other.

8. The filter element filtration structure as described in claim 7, characterized in that, The second module housing has a built-in second receiving cavity, and the surface of the second module housing is respectively provided with a second water outlet and a second water inlet communicating with the second receiving cavity; The second filter module further includes a second filter frame and a carbon rod filter body disposed in the second receiving cavity. The carbon rod filter body is arranged around the second filter frame and abuts against the second inlet and the second outlet respectively.

9. A water purification device, characterized in that, The water purification device includes a filter cartridge filtration structure as described in any one of claims 1-8.

10. The water purification device as described in claim 9, characterized in that, The water purification device also includes a device housing and a water circuit module. The filter element and the water circuit module are respectively installed in the device housing from top to bottom, and the bottom end of the filter element is supported by the water circuit module. The top end of the filter element is fastened to the top side of the device housing by at least one screw.

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