Filter element and water purification device

Abstract

This invention relates to the field of water purification equipment technology, specifically providing a filter element and a water purification device, aiming to solve the problem of uneven water distribution in pre-filters, which affects user experience and operating costs. To this end, the filter element of this invention includes a central tube and a filter sheet; the filter sheet has at least one first crease and at least one second crease, the first and second creases being alternately arranged, and the filter sheet being repeatedly folded sequentially along the first and second creases to form multiple stacked filter layers. The filter element and water purification device provided in this application utilize a winding method to mount the filter on the central tube. The winding of the filter sheet achieves 360° swirling water intake, improving the uniformity of water distribution and increasing the length of the filter layers to increase the flow channel length, thereby increasing the contact area between water and the filter sheet, reducing water flow resistance, and ultimately increasing water flow rate.

Description

Technical Field

[0001] This invention relates to the field of water purification equipment technology, specifically providing a filter element and a water purification device. Background Technology

[0002] As living standards improve, people are paying more and more attention to the quality of their daily water use. More and more people are installing pre-filters before tap water enters their homes to filter impurities (silt, rust, suspended solids, etc.) from the water.

[0003] Pre-filters typically use melt-blown PP cotton or pleated PP cotton as the filter material. Raw water permeates through the surface of the filter element, while filtered water flows out from the center. Impurities in the water are trapped on the surface and within the pores of the filter element. However, existing pre-filters are connected to municipal pipelines, and water flow is limited to one side due to the pipeline's constraints. This results in uneven water distribution, with the area facing the water flow having a much larger filtration capacity than the area away from it. In particular, the area facing the water flow is often clogged with impurities and unable to filter properly, while the area away from the flow remains underutilized. This leads to low overall filter efficiency and excessive water flow resistance within the pre-filter, resulting in low water volume. This significantly impacts the user experience and increases operating costs. Summary of the Invention

[0004] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problem of uneven water distribution in existing pre-filters, which affects the user experience and operating costs.

[0005] In a first aspect, the present invention provides a filter element comprising a central tube and a filter sheet;

[0006] The filter sheet has at least one first crease and at least one second crease, the first crease and the second crease are arranged alternately, and the filter sheet is repeatedly folded according to the first crease and the second crease to form multiple stacked filter layers;

[0007] The filter sheet is wound around the central tube to form a columnar structure, and the interior of the central tube and the exterior of the columnar structure are connected through at least one layer of the filter layer.

[0008] With this setup, a water inlet channel that flows around the central tube can be formed on the filter element. This allows for 360° swirling water inlet by the winding of the filter disc, improving the uniformity of water distribution. It also increases the length of the filter layer to increase the flow channel length, thereby increasing the contact area between the water and the filter disc, reducing water flow resistance, and ultimately increasing the water flow rate.

[0009] In the preferred embodiment of the above-mentioned filter element, the filter sheet is disposed on the central tube at the portion of the first fold.

[0010] By placing the first crease on the central tube, a seal between the filter and the central tube can be ensured.

[0011] In the preferred technical solution of the above filter element, when there are multiple first creases, the multiple first creases are distributed circumferentially along the central tube, and the first gap formed between two adjacent first creases is connected to the central tube.

[0012] The spacing of the first folds and the first gaps ensure the reliability of water flow between the central pipe and the two filter layers that form the first gaps, thus guaranteeing the filtration effect.

[0013] In the preferred embodiment of the above-mentioned filter element, when there are multiple second creases, a second gap is formed between two adjacent second creases, and after the filter sheet is wound around the central tube, the second gap is located on the outer peripheral wall of the columnar structure.

[0014] Because the first fold is located on the central tube, and the second fold is located on the outer peripheral wall of the columnar structure, the external space of the columnar structure is connected to the internal space of the columnar structure through the second gap. For example, taking the external water inlet of the columnar structure and the central tube water outlet as an example, the water outside the columnar structure can enter and flow between the two filter layers through the second gap, thereby ensuring 360° swirling water inlet of the filter element, improving the water distribution uniformity of the filter element, and increasing the length of the filter layer to increase the flow channel length, thereby increasing the contact area between the water and the filter plate, reducing the water flow resistance, and achieving the purpose of increasing the water flow rate.

[0015] In the preferred embodiment of the above filter element, the filter sheet is rectangular, the filter sheet has a first edge in the width direction, and the first crease and the second crease extend along the width direction of the filter sheet and are distributed at intervals along the length direction of the filter sheet.

[0016] This design ensures that the filter element can be folded along its length and that the edges of the filter layer are flush. When wound around the central tube, the end face of the resulting columnar structure is flat, which ensures that the end face of the resulting columnar structure is regular and easy to seal, thus guaranteeing the filtration effect of the filter element.

[0017] And / or, after the filter is wound around the central tube, both the first crease and the second crease are parallel to the axis of the central tube.

[0018] This setup ensures the filter discs are properly wound around the central tube.

[0019] In the preferred embodiment of the above-mentioned filter element, the filter element further includes an inlet flow guiding structure and a purified water flow guiding structure. In the three adjacent filter layers, the inlet flow guiding structure is provided between the first filter layer and the second filter layer, and the purified water flow guiding structure is provided between the second filter layer and the third filter layer.

[0020] The filter cartridge utilizes an inlet flow guide structure and a purified water flow guide structure to guide the raw water and the filtered purified water respectively. At the same time, the inlet flow guide structure can support the spacing between two adjacent filter layers to ensure the flow efficiency of the raw water, and the purified water flow guide structure can also support the spacing between two adjacent filter layers to ensure the flow efficiency of the purified water, thereby effectively increasing the flow rate of the filter cartridge.

[0021] In the preferred embodiment of the above-mentioned filter element, the filter element further includes a sealing structure, which is disposed at the end of the columnar structure to seal the end of the columnar structure.

[0022] Even after the filter disc is folded and rolled up, water can still flow through the end face of the columnar structure. By setting a sealing structure to seal the end face of the columnar structure, water cannot flow through the end face of the columnar structure and can only flow through the filter disc, thus ensuring the filtration effect of the filter element.

[0023] In the preferred embodiment of the above filter element, the sealing structure includes an end cap, which is fastened to the end of the columnar structure.

[0024] By using end caps to fasten the ends of the columnar structure, the end face of the columnar structure is sealed, ensuring the filtration effect of the filter element. It also seals the multi-layer structure of the end face of the columnar structure, so that the user cannot observe the end structure of the filter element, thus improving the user experience.

[0025] Alternatively, a sealant can be applied to the end face of the columnar structure to form the sealing structure.

[0026] Once the sealant is applied to the end face, it forms a sealed and smooth protective layer, sealing the end face of the columnar structure, ensuring the filtration effect of the filter element, and also sealing the multi-layer structure of the end face of the columnar structure. Users cannot touch the end structure of the filter element, thus improving the user experience.

[0027] In the preferred embodiment of the above filter element, the sealing structure includes an end cap, which is fastened to the end face of the columnar structure, and a sealant is filled between the end cap and the end face of the columnar structure.

[0028] In other words, a sealant is first used to form a sealed and smooth protective layer on the end face to seal the end face of the columnar structure. Then, the end cap is attached to perform a secondary seal on the end of the columnar structure, further improving the sealing and filtration effects of the filter element. At the same time, the end cap is more aesthetically pleasing than the protective layer formed by the sealant, as the user cannot see the end structure of the filter element, thus improving the user experience.

[0029] In the preferred embodiment of the above filter element, the filtration accuracy of the filter element is in the range of 1μm to 5μm.

[0030] This setup ensures the filter cartridge's filtration effectiveness while preventing excessive water flow resistance from the filter element, which could affect the water flow rate.

[0031] In a second aspect, the present invention provides a water purification device including the aforementioned filter element.

[0032] It is understandable that this garment processing equipment possesses all the technical effects of the aforementioned drying device, and will not be elaborated upon here.

[0033] The filter cartridge and water purification equipment provided in this application form a multi-layered filter by repeatedly folding the filter discs. The folded filter discs are then wound around a central tube. The first and second folds achieve a sealed connection between the edges of adjacent filter discs, reducing production difficulty and overcoming the problem of existing technologies where sealant is applied to the edges of the filter discs, thus reducing their effective filtration area and ensuring the filter cartridge's filtration efficiency. Furthermore, the winding method on the central tube allows for 360° swirling water intake, improving water distribution uniformity and increasing the length of the filter layers to increase the flow channel length. This increases the contact area between water and the filter discs, reduces flow resistance, and ultimately improves water flow rate. Attached Figure Description

[0034] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0035] Figure 1 This is a schematic diagram of the filter element provided in the embodiments of this application;

[0036] Figure 2 This is a schematic diagram of the folded structure of the filter sheet provided in the embodiments of this application;

[0037] Figure 3 This is a schematic diagram of the structure of the filter sheet provided in the embodiments of this application after repeated folding;

[0038] Figure 4 This is a schematic diagram of the structure of the filter sheet provided in this application embodiment after repeated folding and insertion into the water inlet guide structure and the water purification guide structure;

[0039] Figure 5 This is a schematic diagram of the structure of the filter sheet wound around the central tube according to an embodiment of this application;

[0040] Figure 6 This is an exploded view of the filter element provided in the embodiments of this application;

[0041] Figure 7 This is a cross-sectional view of the filter element provided in the embodiment of this application.

[0042] The reference numerals in the attached figures are as follows:

[0043] 1. Central tube; 2. Filter plate; 31. First crease; 32. Second crease; 33. Filter layer; 34. First gap; 35. Second gap; 41. Water inlet guide structure; 42. Purified water guide structure; 5. End cap. Detailed Implementation

[0044] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. For example, although the embodiments described below are in conjunction with a washer-dryer combo, the technical solutions of the present invention are equally applicable to other types of clothing processing equipment, such as dryers and garment care machines.

[0045] It should be noted that in the description of this invention, terms such as "left," "right," "front," and "rear," indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] Furthermore, to better illustrate the technical solution of the present invention, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that the present invention can be implemented even without certain specific details. In some examples, drying principles and other aspects well-known to those skilled in the art are not described in detail, in order to highlight the main points of the present invention.

[0047] As the background technology shows, the filter material in a pre-filter cartridge is generally selected from melt-blown PP cotton, pleated PP cotton, etc. Raw water permeates from the surface of the filter cartridge, and filtered clean water flows out from the center. Impurities in the water are intercepted on the surface and inside the pores of the filter cartridge. However, existing pre-filters are all connected to municipal pipelines. Due to the limitations of the municipal pipeline, water flow can only enter the pre-filter from one side, resulting in the area of ​​the filter cartridge facing the water flow direction having a much larger filtration capacity than the area away from the water flow direction, causing uneven water distribution. In particular, the filter cartridge area facing the water flow direction is already blocked by impurities and cannot filter properly, while the filter cartridge area away from the water flow direction is still not fully utilized, resulting in low overall filter cartridge efficiency. Moreover, the water flow resistance in the pre-filter is too high, resulting in low water flow, which seriously affects the user experience and increases the user's operating costs.

[0048] Therefore, such as Figures 1 to 7 As shown, this application provides a filter element, including a central tube 1 and a filter sheet 2. The filter sheet 2 has at least one first fold 31 and at least one second fold 32, which are spaced apart. The filter sheet 2 is repeatedly folded along the first fold 31 and the second fold 32 to form multiple stacked filter layers 33. The filter sheet 2 is wound around the central tube 1 to form a columnar structure, and the interior of the central tube 1 and the exterior of the columnar structure are connected through at least one layer of the filter layer 33. By repeatedly folding the filter sheet 2 to form multiple filter layers 33 and winding the folded filter sheet 2 around the central tube 1, the first fold 31 and the second fold 32 achieve a sealed connection between the edges of two adjacent filter sheets 2, reducing production difficulty and overcoming the problem of occupying the effective filtration area of ​​the filter sheet 2 by setting sealant along its edges, thus ensuring the filtration effect of the filter element. Furthermore, by using a winding method to set it on the central tube 1, the winding of the filter sheet 2 can realize 360° swirling water intake of the filter element, improve the water distribution uniformity of the filter element, and increase the length of the filter layer 33 to increase the flow channel length, thereby increasing the contact area between water and the filter sheet 2, reducing water flow resistance, and achieving the purpose of increasing water flow rate.

[0049] exist Figure 2In the diagram, filter sheet 2 is in a flat state. The dotted line on it represents the first crease 31, and the solid line represents the second crease 32. When filter sheet 2 is repeatedly folded, the portion of filter sheet 2 located to the left of the first crease 31 is flipped outwards from the paper surface, and this portion of filter sheet 2 is brought into contact with the portion of filter sheet 2 located to the right of the first crease 31, thus forming two adjacent filter layers 33. Similarly, the portion of filter sheet 2 located to the left of the second crease 32 is flipped inwards from the paper surface, and this portion of filter sheet 2 is brought into contact with the portion of filter sheet 2 located to the right of the second crease 32, thus forming two adjacent filter layers 33. For example... Figure 1 The filter sheet 2 is numbered a, b, c, d, e, and f from left to right. The first fold 31 occurs between a and b, c and d, and e and f; the second fold 32 occurs between b and c, and d and f. When repeatedly folding the filter sheet 2, first, a is flipped outwards to fit against b. Then, the fitted a and b are flipped inwards to fit against c. Next, the fitted a, b, and c are flipped outwards to fit against d, and so on, until e and f fit together, completing the repeated folding of the filter sheet 2. The final folded shape is as follows: Figure 3 As shown, the numbers from bottom to top are f, e, d, c, b, and a. Figure 3 The filter layer 33 is not fully folded in place; it is only used to show the relative position of the filter layer 33.

[0050] Because it is necessary to limit the flow path of water, the filter 2 is disposed on the central tube 1 at the first crease 31. Water filtered by the filter layer 33 can only enter the central tube, or water flowing out of the central tube can only flow through the filter layer 33, so as to ensure the sealing effect between the filter and the central tube.

[0051] When there are multiple first creases 31, the multiple first creases 31 are distributed circumferentially along the central tube 1, and the first gap 34 formed between two adjacent first creases 31 is connected to the central tube 1. The spacing of the first creases 31 and the first gaps 31 ensure the reliability of water flow between the central tube and the two filter layers forming the first gaps, thus guaranteeing the filtration effect.

[0052] Furthermore, when there are multiple second creases 32, a second gap 35 is formed between two adjacent second creases 32, and after the filter sheet 2 is wound around the central tube 1, the second gap 35 is located on the outer peripheral wall of the columnar structure.

[0053] Since the first fold 31 is located on the central tube 1 and the second fold 32 is located on the outer peripheral wall of the columnar structure, the external space of the columnar structure is connected to the internal space of the columnar structure through the second gap 35. For example, taking the external water inlet of the columnar structure and the water outlet of the central tube 1 as an example, the water outside the columnar structure can enter and flow between the two filter layers 33 through the second gap 35, thereby ensuring 360° swirling water inlet of the filter element, improving the water distribution uniformity of the filter element, and increasing the length of the filter layer 33 to increase the flow channel length, thereby increasing the contact area between the water and the filter plate 2, reducing the water flow resistance, and achieving the purpose of increasing the water flow rate.

[0054] Taking the central pipe 1 as the outlet side and the outside of the columnar structure as the inlet side as an example, the raw water outside the columnar structure will enter between the two filter layers 33 through the second gap 35. As the raw water flows through the two filter layers 33, it is gradually filtered by the filter layers 33 and then enters the other side of the filter layers 33. It should be noted that during the flow of the raw water through the two filter layers 33, due to the winding arrangement of the filter sheet 2, the raw water is rotated 360°. All parts of the filter layer 33 can come into contact with the raw water, thereby ensuring the water filtration efficiency, reducing the water flow resistance, and increasing the water flow rate.

[0055] After being filtered by filter layer 33, the raw water becomes purified water. The purified water continues to flow along the gap between the two filter layers 33 and eventually enters the central pipe 1 through the first gap 34, where it collects and flows out. Throughout the process, impurities in the raw water are filtered by filter layer 33 and remain on the side of filter layer 33 connected to the second gap 35. The purified water passes through filter layer 33 and enters the central pipe 1 to continue flowing, thus completing the filtration of the raw water.

[0056] As another implementation method, taking the central pipe 1 as the water inlet side and the outer side of the columnar structure as the water outlet side as an example, the raw water flows through the central pipe 1 to all the first gaps 34, and enters between the two filter layers 33 through the first gaps 34. As the raw water flows through the two filter layers 33, it is gradually filtered by the filter layers 33 and then enters the other side of the filter layers 33. It should be noted that during the flow of the raw water through the two filter layers 33, due to the winding arrangement of the filter sheet 2, the raw water flows in a 360° rotation, and all parts of the filter layer 33 can contact the raw water, thereby ensuring the water filtration efficiency, reducing water flow resistance, and increasing water flow rate.

[0057] After being filtered by filter layer 33, the raw water becomes purified water. The purified water continues to flow along the gap between the two filter layers 33 and eventually reaches the outside of the columnar structure through the second gap 35. Then, it is collected by the shell or other structures set on the outside of the columnar structure and flows out. Throughout the process, impurities in the raw water are filtered by filter layer 33 and remain on the side of filter layer 33 connected to the first gap 34. The purified water passes through filter layer 33 and reaches the outside of the columnar structure and continues to flow, thus completing the filtration of the raw water.

[0058] Preferably, the filter sheet 2 is rectangular, and the filter sheet 2 has a first edge in the width direction. The first crease 31 and the second crease 32 extend along the width direction of the filter sheet 2 and are spaced apart along the length direction of the filter sheet 2, that is, the first crease 31 and the second crease 32 are both parallel to the first edge. Figure 2 As shown, the shape of the filter sheet 2 in its unfolded state is rectangular. By making the first fold 31 and the second fold 32 parallel to the first edge, the filter sheet 2 can be folded along the length direction, and the edge of the filter layer 33 is flush. When it is wound on the central tube 1, the end face of the columnar structure formed is flat, which can ensure that the end face of the columnar structure is regular for easy sealing and to ensure the filtration effect of the filter element.

[0059] Similarly, after the filter sheet 2 is wound around the central tube 1, both the first crease 31 and the second crease 32 are parallel to the axis of the central tube 1.

[0060] With this setup, the winding effect of the filter element 2 on the central tube 1 can be guaranteed. That is, at this time, the width edge of the filter element 2, the first fold 31, the second fold 32 and the axis of the central tube 1 are all parallel to each other. At this time, the folded filter element 2 is wound around the axis of the central tube 1, which can ensure that the filter element 2 can be wound into a columnar structure with flat end faces, which makes it easy to seal the end of the columnar structure and ensure the filtration effect of the filter element.

[0061] In one embodiment, the filter element further includes a water inlet guiding structure 41 and a purified water guiding structure 42. Among the three adjacent filter layers 33, the water inlet guiding structure is disposed between the first and second filter layers 33, and the purified water guiding structure is disposed between the second and third filter layers 33. The water inlet guiding structure 41 and the purified water guiding structure 42 respectively guide the raw water and the filtered purified water. Simultaneously, the water inlet guiding structure 41 supports the spacing between adjacent filter layers 33 to ensure the flow efficiency of the raw water, and the purified water guiding structure 42 also supports the spacing between adjacent filter layers 33 to ensure the flow efficiency of the purified water, thereby effectively increasing the flow rate of the filter element.

[0062] Optionally, the inlet water guiding structure 41 and the purified water guiding structure 42 are guiding nets, whose structures can be three-dimensional grids, diamond grids, corrugated ribs, etc., and their function is only to distribute water evenly, prevent adjacent filter layers 33 from sticking together, and increase water flow. Figure 4 As shown, a flow guide net is set between two adjacent filter layers 33, and the flow guide net is divided into an inlet flow guide net (inlet flow guide structure 41) and a purified water flow guide net (purified water flow guide structure 42) according to the water flow through the flow guide net.

[0063] like Figure 5 As shown, the first fold of the filter element inserted into the water inlet guide structure 41 and the water purification guide structure 42 is set on the central tube, and it is wound around the axis of the central tube, with the winding direction as shown. Figure 5 As shown by the arrow in the image.

[0064] During the repeated folding of the filter element 2, the two adjacent filter layers 33 are sealed only at the first fold 31 or the second fold 32, and cannot be sealed at the other three sides. In order for the water to be filtered by the filter layer 33 and flow, a first gap 34 needs to be formed between two adjacent first folds 31 and a second gap 35 needs to be formed between two adjacent second folds 32. That is, sealing is only required at the end of the columnar structure. For this reason, the filter element also includes a sealing structure, which is provided at the end of the columnar structure to seal the end of the columnar structure.

[0065] Even after the filter element 2 is folded and rolled up, the water can still flow through the end face of the columnar structure. By setting a sealing structure to seal the end face of the columnar structure, the water cannot flow through the end face of the columnar structure but can only flow through the filter element 2, thus ensuring the filtration effect of the filter element.

[0066] Among them, a flow hole is provided on the part of the central tube 1 corresponding to the first gap 34. The flow hole can be used to collect the water flowing through the first gap 34 or send water into the filter layer 33 through the first gap.

[0067] In one embodiment, the sealing structure includes an end cap 5, which is fastened to the end of the columnar structure. By fastening the end of the columnar structure with the end cap 5, the end face of the columnar structure is sealed, ensuring the filtration effect of the filter element. It also seals the multi-layered structure of the end face of the columnar structure, preventing the user from observing the end structure of the filter element and improving the user experience.

[0068] As another implementation, a sealant is applied to the end face of the columnar structure to form the sealing structure. By applying sealant to the end face of the columnar structure, a sealed and smooth protective layer is formed on the end face, achieving a seal on the end face of the columnar structure, ensuring the filtration effect of the filter element, and also sealing the multi-layer structure of the end face of the columnar structure. The user cannot touch the end structure of the filter element, thus improving the user experience.

[0069] In another embodiment, the sealing structure includes an end cap 5, which is fastened to the end face of the columnar structure, and sealant is filled between the end cap 5 and the end face of the columnar structure. That is, the end face is first sealed with a smooth and sealed protective layer using sealant, thus providing a primary seal. Then, the end cap 5 is fastened to provide a secondary seal, further improving the sealing and filtration effects of the filter element. Simultaneously, the end cap 5 is more aesthetically pleasing than the protective layer formed by the sealant, preventing the user from observing the end structure of the filter element, thus improving the user experience. Furthermore, the sealant reliably connects the end cap 5 to the columnar structure, ensuring the reliable fixation of the end cap 5.

[0070] like Figure 6 As shown, the sealing structure includes an upper end cover and a lower end cover. The upper end cover is located at the upper end of the column structure and seals the upper end of the column structure. The lower end cover is located at the lower end of the column structure and seals the lower end of the column structure. In the structure not shown in the figure, the upper end cover and the lower end cover can also be connected to ensure the relative position between the upper end cover and the lower end cover is stable.

[0071] During the installation of the upper and lower end caps, sealant is first injected into both caps. Then, the upper end cap is fastened onto the upper end of the column structure, ensuring the sealant is fully distributed between the upper end cap and the upper surface of the column structure, thus sealing the upper end of the column structure. Similarly, the lower end cap is fastened onto the lower end of the column structure, ensuring the sealant is fully distributed between the lower end cap and the lower surface of the column structure, thus sealing the lower end of the column structure.

[0072] The sealant can be cured silicone rubber.

[0073] In this application, the filter element is used in a pre-filter, meaning it targets impurities in the water, such as colloids, suspended solids, silt, and rust. The size range of colloids is 1μm to 50μm, while the size range of silt, rust, and suspended solids is greater than 50μm. Therefore, the filtration accuracy of the filter element 2 is 1μm to 5μm, which is sufficient to meet the needs of a pre-filter. Furthermore, filtration accuracy significantly affects the water flow rate of the filter element. When the filtration accuracy is too low, the water flow resistance is high, and the water flow rate is low. Conversely, when the filtration accuracy is too high, some impurities (such as colloids) may not be reliably filtered. Only by setting the filtration accuracy of the filter element 2 to 1μm to 5μm can the filtration effect of the filter element be guaranteed, and the excessive water flow resistance generated by the filter element 2 be avoided from affecting the water flow rate.

[0074] Activated carbon and other materials can also be filled into the central tube 1 to further filter the water and improve the filtration effect of the filter element.

[0075] In a second aspect, the present invention provides a water purification device including the aforementioned filter element.

[0076] It is understandable that this garment processing equipment possesses all the technical effects of the aforementioned drying device, and will not be elaborated upon here.

[0077] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles 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 such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A filter element, characterized in that, Includes a central tube (1) and a filter (2); The filter sheet (2) has at least one first crease (31) and at least one second crease (32) formed on it. The first crease (31) and the second crease (32) are arranged at intervals, and the filter sheet (2) is repeatedly folded according to the first crease (31) and the second crease (32) to form multiple stacked filter layers (33). The filter sheet (2) is wound around the central tube (1) to form a columnar structure, and the interior of the central tube (1) and the exterior of the columnar structure are connected by at least one layer of the filter layer (33).

2. The filter element according to claim 1, characterized in that, The filter (2) is fixedly connected to the central tube (1) at the first crease (31).

3. The filter element according to claim 2, characterized in that, When there are multiple first creases (31), the multiple first creases (31) are distributed circumferentially along the central tube, and the first gap (34) formed between two adjacent first creases (31) is connected to the central tube (1).

4. The filter element according to claim 1, characterized in that, When there are multiple second creases (32), a second gap (35) is formed between two adjacent second creases (32), and after the filter sheet (2) is wound around the central tube (1), the second gap (35) is located on the outer peripheral wall of the columnar structure; and / or The filter (2) is rectangular, and the first crease (31) and the second crease (32) both extend along the width direction of the filter (2) and are spaced apart along the length direction of the filter (2); and / or, After the filter (2) is wound around the central tube (1), the first crease (31) and the second crease (32) are both parallel to the axis of the central tube (1).

5. The filter element according to claim 1, characterized in that, The filter element also includes an inlet flow guiding structure (41) and a purified water flow guiding structure (42). In the three adjacent filter layers (33), the inlet flow guiding structure (41) is provided between the first filter layer (33) and the second filter layer (33), and the purified water flow guiding structure (42) is provided between the second filter layer (33) and the third filter layer (33).

6. The filter element according to claim 1, characterized in that, The filter element also includes a sealing structure disposed at the end of the columnar structure to seal the end of the columnar structure.

7. The filter element according to claim 6, characterized in that, The sealing structure includes an end cap (5), which is fastened to the end of the columnar structure; or, a sealant is provided on the end face of the columnar structure to form the sealing structure.

8. The filter element according to claim 6, characterized in that, The sealing structure includes an end cap (5), which is fastened to the end of the columnar structure, and a sealant is filled between the end cap (5) and the columnar structure.

9. The filter element according to any one of claims 1 to 8, characterized in that, The filtration accuracy of the filter (2) ranges from 1 μm to 5 μm.

10. A water purification device, characterized in that, The filter element includes any one of claims 1 to 9.

Images