Filter assembly, pre-filter and water system

Abstract

The utility model discloses a filter assembly, prefilter and water consuming system, relates to water consuming system technical field, the filter assembly includes a plurality of filter module, the inside of filter module forms water passing cavity, the filter module also forms first water passing port and second water passing port that communicate with the water passing cavity, the first water passing port and second water passing port are communicated with the water passing cavity through the first water passing port and the second water passing port, the first water passing port is communicated with the water passing cavity through the second water passing port. Each filtering module comprises a filtering piece arranged at the corresponding second water passing opening, at least part of each filtering piece is obliquely arranged, and the multiple filtering modules are sequentially connected in the first direction; according to the technical scheme provided by the utility model, the filtering area of the filtering assembly can be increased.

Description

Technical Field

[0001] This utility model relates to the field of water system technology, and in particular to a filter component, a pre-filter, and a water system. Background Technology

[0002] Currently, pre-filters are the first coarse filtration device for whole-house water supply. They can filter out sediment, rust, large particles, and other impurities from tap water, thus preventing the large amount of sediment and impurities generated in urban and residential water supply networks from causing harm to the human body.

[0003] However, the existing pre-filters have a cylindrical filter structure with a small filtration area, resulting in low filtration efficiency. Utility Model Content

[0004] The main objective of this invention is to provide a filter assembly, a pre-filter, and a water system, which aims to increase the filtration area of ​​the filter assembly.

[0005] To achieve the above objectives, the present invention proposes a filter assembly for use as a pre-filter. The filter assembly includes multiple filter modules, each filter module having a water passage cavity inside. Each filter module also has a first water passage and a second water passage communicating with the water passage cavity. Each filter module includes a filter element disposed at the second water passage, and the filter element is at least partially inclined. The multiple filter modules are connected sequentially along a first direction.

[0006] In one embodiment, the filter module is provided with a first connection structure and a second connection structure on both sides distributed along the first direction. The first connection structure of one filter module is used to detachably connect with the second connection structure of the other filter module so that the two filter modules are fixed together.

[0007] In one embodiment, one of the first connecting structure and the second connecting structure is configured as a second latching protrusion, and the other is configured as a second latching groove that engages with the second latching protrusion.

[0008] In one embodiment, the second slot is configured as a second annular groove, and the second protrusion is configured as a second annular protrusion corresponding to the second annular groove.

[0009] In one embodiment, one of the first connecting structure and the second connecting structure is configured as a second hook, and the other is configured as a second hook groove that cooperates with the second hook.

[0010] In one embodiment, the second hook groove is configured as an annular second hook groove, and multiple second hooks are configured, with the multiple second hooks spaced apart circumferentially.

[0011] In one embodiment, a first connection structure of one of the filter modules is used for threaded connection with a second connection structure of another filter module.

[0012] In one embodiment, the filtration assembly further includes a water distributor connected to the filtration module, wherein the water distribution space is positioned relative to the second water inlet.

[0013] In one embodiment, the water distributor is provided with a fifth connection structure on one side along the first direction. The fifth connection structure is used to cooperate with the first connection structure or the second connection structure of the filter module to fix the water distributor and the filter module together.

[0014] In one embodiment, the fifth connection structure is used to engage with the first or second connection structure of the filter module.

[0015] In one embodiment, two adjacent filter modules are connected through the first water inlet, and the walls of the first water inlets of the two adjacent filter modules abut against each other.

[0016] In one embodiment, the filtration module includes a support frame, the water passage cavity is formed within the support frame, the first water passage and the second water passage are formed within the support frame, and the filter element is disposed on the support frame and is disposed corresponding to the second water passage.

[0017] In one embodiment, the filter module includes two support frames distributed and connected along the axial direction, the water passage cavity is formed between the two support frames, at least one of the two support frames is provided with the first water passage, at least one of the two support frames is provided with the second water passage, and the filter element is provided corresponding to the second water passage.

[0018] In one embodiment, the filter element is arranged in a conical or pyramidal shape.

[0019] This utility model also proposes a pre-filter, which includes the above-mentioned filter components.

[0020] This utility model also proposes a water system, including the aforementioned pre-filter.

[0021] The technical solution of this utility model increases the filtration area of ​​the filter element by at least partially tilting it. With the same axial height, this increased filtration area allows the filter element to withstand a larger flow load, thus improving filtration efficiency. Furthermore, because the filtration area is sufficiently large, even if a localized area of ​​the filter element becomes clogged, the remaining areas can continue to withstand a significant flow load, helping to extend the service life of the filter module, reduce replacement frequency, and lower maintenance costs. Secondly, the filter assembly of this solution includes multiple filter modules. Since the filtration area of ​​each filter module is fixed, this solution increases the total filtration area of ​​the filter assembly by using multiple filter modules, thereby improving filtration efficiency. Moreover, with the filter element of a single filter module tilted, using multiple filter modules further utilizes space to create an even larger filtration area. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 A first-view structural schematic diagram of an embodiment of the filter assembly provided by this utility model;

[0024] Figure 2 A second-view structural schematic diagram of an embodiment of the filter assembly provided by this utility model;

[0025] Figure 3 A cross-sectional view of the first embodiment of the filter assembly provided by this utility model;

[0026] Figure 4 A cross-sectional view of the second embodiment of the filter assembly provided by this utility model;

[0027] Figure 5 This is a schematic diagram of the third embodiment of the filter assembly provided by this utility model;

[0028] Figure 6 for Figure 5 A cross-sectional view of the provided filter assembly;

[0029] Figure 7 for Figure 5 A partial cross-sectional structural diagram of the provided filter component;

[0030] Figure 8 A partial structural schematic diagram of another embodiment of the filter assembly provided by this utility model;

[0031] Figure 9 for Figure 8 A cross-sectional structural diagram of a portion of the provided filter assembly.

[0032] Figure 10 A first-view structural schematic diagram of an embodiment of the filtering module provided by this utility model;

[0033] Figure 11 An exploded view of an embodiment of the filter module provided by this utility model;

[0034] Figure 12 An exploded view of the support frame structure of the filter module provided by this utility model;

[0035] Figure 13 A cross-sectional view of the first embodiment of the filter module provided by this utility model;

[0036] Figure 14 This is a cross-sectional structural diagram of the second embodiment of the filter module provided by this utility model.

[0037] Explanation of icon numbers:

[0038] 30. Filter assembly; 300. Filter module; 310. Support frame; 311. Inclined support; 312. First ring; 313. Second ring; 320. Filter element; 330. First water outlet; 340. Water passage cavity; 350. Second water outlet; 301. Second ring groove; 302. Second ring protrusion; 304. Second hook; 305. Second hook groove; 60. Water distributor.

[0039] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0041] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0042] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0043] Water systems, such as whole-house water purification systems, typically include pre-filters. These pre-filters remove large particles from tap water, ensuring water safety, extending the lifespan of appliances, preventing pipe blockages, and improving residents' health. The pre-filter is the first coarse filtration stage in a whole-house water purification system. It's a physical filtration device primarily used to intercept large particles larger than 40 microns, protecting downstream water supply.

[0044] Some pre-filters on the market usually have a flushing function, that is, they can be cleaned regularly to remove large particles that have been intercepted, thereby extending the service life of the pre-filter.

[0045] The pre-filter includes a filter bottle and a valve head connected to the filter bottle. The filter bottle has a water filtration chamber, and the valve head has an inlet and an outlet that are connected to the water filtration chamber. The inlet is connected to the water supply end, and the outlet is connected to the water user end.

[0046] It should be noted that the water supply end can be a tap water pipe, a water tower, or a well water source, and the water consumption end can be a faucet, a shower head, or a drinking water outlet. This application does not make any specific restrictions on this.

[0047] Furthermore, the pre-filter also includes a filter assembly 30 disposed within the filtration chamber. When raw water (e.g., tap water or well water) flows into the inlet from an external water source, it is filtered by the filter assembly 30 as it flows through the filtration chamber, removing large particles. The filtered water then flows out of the pre-filter from the outlet and towards the point of use. In this way, coarse filtration of the raw water is achieved.

[0048] However, the existing pre-filters have a cylindrical filter structure with a small filtration area, resulting in low filtration efficiency.

[0049] Reference Figures 5 to 9 Therefore, in order to solve the above problems, this utility model proposes a filter assembly 30. In one embodiment of this utility model, the filter assembly 30 is used as a pre-filter. The filter assembly 30 includes a plurality of filter modules 300. The filter module 300 has a water passage cavity 340 inside. The filter module 300 also has a first water passage 330 and a second water passage 350 communicating with the water passage cavity 340. The filter module 300 includes a filter element 320 disposed in the second water passage 350. The filter element 320 is at least partially inclined. The plurality of filter modules 300 are connected sequentially along a first direction.

[0050] The technical solution of this utility model increases the filtration area of ​​the filter element 320 by at least partially tilting it relative to a planar design. This allows for a larger filtration area for the same axial height, enabling the filter element 320 to withstand greater flow loads and improve filtration efficiency. Furthermore, because the filtration area is sufficiently large, even if some areas of the filter element 320 become clogged, the remaining areas can continue to withstand a larger flow load, helping to extend the service life of the filter module 300, reduce replacement frequency, and thus lower maintenance costs.

[0051] Secondly, the filter assembly of this solution includes multiple filter modules 300. Since the filtration area of ​​each filter module 300 is fixed, this solution can increase the total filtration area of ​​the filter assembly 30 by setting multiple filter modules 300, thereby improving the filtration efficiency. Moreover, when the filter element 320 of a single filter module 300 is tilted, setting multiple filter modules 300 can further utilize the space and form a larger filtration area.

[0052] It should be noted that the "multiple" mentioned in this plan can be understood as two or more.

[0053] Furthermore, the filter module 300 is provided with a first connection structure and a second connection structure on both sides distributed along the first direction. The first connection structure of one filter module 300 is used to cooperate with the second connection structure of another filter module 300 so that the two filter modules 300 are fixed together.

[0054] The technical solution of this utility model is to provide a first connecting structure and a second connecting structure on both sides of the filter module 300 along the first direction, and the first connecting structure and the second connecting structure can cooperate and be fastened together. In this way, the number of filter modules 300 can be flexibly adjusted according to the model of the pre-filter (e.g., but not limited to the size of the filter bottle), thereby achieving the effect of adjusting the size of the filter assembly 30, and thus solving the problem of sharing the filter assembly 30 of different models of pre-filters. Since the filtration area on each filter module 300 is fixed, by adjusting the number of filter modules 300, the total filtration area of ​​the filter assembly 30 can also be adjusted, thereby setting a suitable filtration area and thus improving the filtration effect.

[0055] Secondly, since each filter module 300 has a first connection structure and a second connection structure on both sides, the user can pick up any two filter modules 300 and connect and fix them. This avoids the user having to find a compatible filter module 300 to install, thereby improving the installation efficiency of the filter assembly 30.

[0056] Furthermore, the first connection structure of one filter module 300 is detachably connected to the second connection structure of another filter module 300. This detachable connection allows for easy separation of components without damaging the connector itself or adjacent parts. This feature enables the filter assembly 30 to be operated quickly and efficiently when maintenance or replacement of filter modules 300 is required, reducing maintenance difficulty and cost. Because the detachable connection is easy to operate, it significantly saves time when maintaining and replacing filter modules 300. Moreover, the detachable connection allows for the rapid replacement of faulty filter modules 300, thereby reducing water system downtime and improving maintenance efficiency. Secondly, compared to non-detachable connections, detachable connections reduce the likelihood of entire components being scrapped due to the inability to disassemble, reducing resource waste. Furthermore, the detachable connection allows for periodic or ad-hoc inspection and maintenance of the filter assembly 30 to ensure its stability and safety, which helps to promptly identify and resolve potential safety hazards.

[0057] Reference Figures 3 to 7In one embodiment, a first connecting structure of one filter module 300 is used to snap onto a second connecting structure of another filter module 300. It is understood that this snap-fit ​​assembly eliminates the need for additional locking components such as screws and nuts, thereby reducing the manufacturing and assembly costs of the filter assembly 30. Furthermore, the snap-fit ​​design is flexible and can be customized to meet the actual needs of the filter module 300, reducing material waste and improving material utilization. Secondly, the snap-fit ​​allows for rapid assembly and disassembly without complex tools and equipment. This significantly improves production and assembly efficiency, and also facilitates the maintenance and replacement of the filter module 300. Moreover, the snap-fit ​​operation is simple and easy to master. Both production line workers and ordinary consumers can easily complete the assembly and disassembly work.

[0058] Reference Figures 7 to 9 Optionally, in one embodiment, one of the first connecting structure and the second connecting structure is configured as a second latching protrusion, and the other is configured as a second latching groove that mates with the second latching protrusion; such a latching structure is simple and easy to manufacture.

[0059] It should be noted that the groove wall of the second slot or the second protrusion has a certain elastic deformation. When the second protrusion is inserted, the groove wall of the second slot or the second protrusion elastically avoids it, thereby allowing the second protrusion to be inserted into the second slot. This facilitates the engagement of the second slot and the second annular protrusion 302.

[0060] Furthermore, the second slot is configured as a second annular groove 301, and the second protrusion is configured as a second annular protrusion 302 corresponding to the second annular groove 301; in this way, the sidewalls of the second annular groove 301 and the second annular protrusion 302 can fit together, thereby improving the sealing performance of the connection between the two support frames 310. Of course, this embodiment is not limited to this. In other embodiments, there are multiple second protrusions, and a second slot is provided for each second protrusion.

[0061] It should be noted that "multiple" as mentioned in this plan can be understood as two or more.

[0062] Optionally, in the second embodiment, one of the first connecting structure and the second connecting structure is configured as a second hook 304, and the other is configured as a second hook groove 305 that cooperates with the second hook 304. Such a snap-fit ​​structure is simple and easy to manufacture, and the second hook 304 has a certain degree of elasticity, so that when the second hook 304 is snapped into the second hook groove 305, the second hook 304 will avoid it and thus snap into the second hook groove 305, which makes the connection of the two filter modules 300 easier.

[0063] Furthermore, the second hook groove 305 is configured as an annular second hook groove 305, and multiple second hooks 304 are configured, with the multiple second hooks 304 spaced apart circumferentially. It can be understood that since the second hook groove 305 is annular, multiple second hooks 304 can be engaged within the annular second hook groove 305. Therefore, alignment is not required when connecting the two filter modules 300, allowing for blind insertion, thereby improving the installation efficiency of the filter assembly 30. Of course, this solution is not limited to this. In other embodiments, the second hook groove 305 and the second hooks 304 are each provided with multiple circumferentially spaced second hooks, with one second hook 304 engaging within one second hook groove 305.

[0064] It should be noted that the first direction referred to in this solution is the axial direction, which is the axial direction of the inner ring edge of the filter element 320, that is, the height direction of the cone surface of the filter element 320. The axial direction is equivalent to the direction of the perpendicular line drawn from the vertex of the cone surface to the bottom surface.

[0065] The circumferential direction referred to in this scheme is the circumferential direction of the axis in the first direction, that is, the circumferential direction of the first water outlet 330, which can also be understood as the circumferential direction of the inner ring edge of the filter element 320.

[0066] Optionally, the first connecting structure of one filter module 300 is used for threaded connection with the second connecting structure of another filter module 300. It can be understood that the threaded connection, through the tight engagement of the threads, provides the connection point of the two filter modules 300 with high tensile and compressive strength, meeting the requirements of various working conditions. Furthermore, after assembly, the threaded connection is less prone to loosening, maintaining a stable connection and ensuring the normal operation of the filter assembly 30. Secondly, the threaded connection has a relatively simple structure, is easy to process and assemble, reducing manufacturing and maintenance costs. The filter assembly 30 can be connected or disassembled simply by rotating the filter module 300, without the need for complex tools and equipment, thus improving work efficiency.

[0067] Optionally, the first and second connecting structures are the inlet walls of the first inlet 330, and the first and second connecting structures are fixed together by welding. The welded connection creates a larger contact area on the connecting surface of the inlet wall of the first inlet 330, thus providing better robustness and shock resistance. The welded connection will not loosen under heavy loads, vibration, or temperature changes, effectively enhancing the structural strength and stability of the two filter modules 300. Furthermore, during the welding process, the molten metal fills the gaps and micropores at the connection points of the two filter modules 300, forming a continuous metal connection. This connection effectively prevents water seepage, ensuring the normal operation of the filter assembly 30.

[0068] Optionally, the first and second connecting structures are the walls of the first inlet 330, and the first and second connecting structures are fixed together by adhesive bonding. Adhesive bonding is a relatively simple process, requiring no complex equipment or tools, and is quick and easy to operate. This allows adhesive bonding to quickly and efficiently complete the connection of the two filter modules 300. Since the equipment and material costs required for adhesive bonding are relatively low, the overall cost is also economical; this helps reduce production costs and improve economic efficiency. Secondly, adhesive bonding provides good sealing performance, improving the sealing of the two filter modules 300 and effectively preventing water penetration.

[0069] Reference Figure 13 It should be noted that the filtration flow path of the filter module 300 is as follows: Figure 13 As shown by the solid arrows, in the filtration flow path of the pre-filter, the second water inlet 350, the water passage 340, and the first water inlet 330 are distributed sequentially upstream and downstream. That is, when the pre-filter filters the water flow, the water flow in the filter chamber of the filter bottle passes through the second water inlet 350, the water passage 340, and the first water inlet 330 in sequence, and then flows into the water-using end from the first water inlet 330.

[0070] The backflow path of filter module 300 is as follows: Figure 13 As shown by the dashed arrow, when the pre-filter is in the backwashing state, the water flow from the water end flows into the first water outlet 330, the water passage 340 and the second water outlet 350 in sequence, thereby backwashing and discharging the large particles intercepted on the filter element 320, thus improving the service life of the pre-filter.

[0071] Reference Figures 1 to 4 It should be noted that when the filter assembly 30 includes multiple filter modules 300, and multiple first water inlets 330 are connected to form a water passage, in the filtration flow path of the pre-filter, water flows in from the second water inlet of each filter module 300, then into the water passage cavity 340 of each filter module 300, and then converges into the water passage, finally flowing into the water section. In the backwash flow path of the pre-filter, the water flow at the water section first flows into the water passage, then into the water passage cavity 340 of each filter module 300, and then exits from the second water inlet 350 of each filter module 300, so as to achieve backwashing and discharge of large particles intercepted on the filter element 320.

[0072] Reference Figure 11Furthermore, the filter element 320 is annular, having an inner ring edge and an outer ring edge, with the outer ring edge located on one axial side of the inner ring edge. This means that by arranging the filter element 320 in an annular shape, and with the outer ring edge located on one axial side of the inner ring edge, the inner and outer ring edges are not at the same height in the axial direction. Under the same axial height, this increases the filtration area of ​​the filter element 320. This implies that under the same flow rate, the filter element 320 can withstand a larger flow load, improving filtration efficiency. Moreover, because the filtration area of ​​the filter element 320 is sufficiently large, even if a localized area of ​​the filter element 320 becomes clogged, the remaining areas can continue to withstand a larger flow load, helping to extend the service life of the filter module 300, reduce replacement frequency, and thus lower maintenance costs.

[0073] Secondly, the filter element 320 is arranged in a ring shape, with the outer ring edge located on the axial side of the inner ring edge; this increases the distance between the filter element 320 and the surrounding environmental components or another filter module 300, thereby reducing the chance of the filter module 300 becoming clogged. Moreover, it also helps to flush impurities off the filter element 320 during backwashing.

[0074] In one embodiment, the filter element 320 is in the shape of an annular cone, which facilitates the sliding of impurities from the surface of the filter element 320 and reduces the probability of impurities clogging the filter element 320.

[0075] Furthermore, the outer surface of the filter element 320 is conical. The conical design facilitates uniform fluid distribution and smooth flow, reducing eddies and turbulence within the filter module 300 and lowering energy loss. Specifically, the generatrix of the conical surface can be a straight line, or it can be a concave arc that curves inward toward the water passage cavity 340, or it can be a convex arc that curves outward toward the water passage cavity 340.

[0076] In the second embodiment, the outer surface of the filter element 320 is a pyramidal surface; the cross-section of the pyramidal surface is polygonal, thereby increasing the filtration area of ​​the filter element 320.

[0077] Furthermore, the first water outlet 330 is provided at least on the inner circumference of one of the inner ring edge and the outer ring edge of the filter element 320, and the first water outlet 330 is simple to form and easy to manufacture.

[0078] In this embodiment, a first water inlet 330 is provided on both the inner and outer ring edges. Of course, this utility model is not limited to this. In other embodiments, a first water inlet 330 may be provided on only one ring edge. The setting can be made according to the actual application environment.

[0079] Reference Figure 3 and Figure 4It should be noted that when the filter assembly 30 is constructed from multiple filter modules 300, the multiple filter modules 300 are distributed along the axial direction of the first water inlet 330, and two adjacent filter modules 300 are connected through the first water inlet 330, and the walls of the first water inlets 330 of two adjacent filter modules 300 abut against each other.

[0080] Specifically, the two first inlets 330 of the middle filter module 300 are connected to the first inlets 330 of the adjacent filter modules 300, respectively. One first inlet 330 of one end filter module 300 is connected to the first inlet 330 of the middle filter module 300, and the other first inlet 330 is connected to the outlet of the pre-filter. Another end filter module 300 has one first inlet 330 connected to the first inlet 330 of the middle filter module 300, while the other first inlet 330 is blocked.

[0081] The filter assembly 30 may also include only one filter module 300. In this case, one first water inlet 330 of the filter module 300 is connected to the water inlet of the filter bottle, and the other first water inlet 330 is blocked.

[0082] It should be noted that the sealing of the first water outlet 330 can be achieved by sealing it during the later installation process using the bottom connector, or by sealing it during the manufacturing process.

[0083] Reference Figures 10 to 14 Optionally, the filter module 300 includes a support frame 310, a water passage cavity 340 formed within the support frame 310, and a first water passage 330 and a second water passage 350 passing through the water passage 340 also formed in the support frame 310. The filter element 320 is disposed on the support frame 310 and is disposed corresponding to the second water passage 350. It can be understood that the support frame 310 can increase the support force of the filter module 300 on the filter element 320.

[0084] In this embodiment, the filter module 300 includes two support frames 310 distributed along a first direction, a water passage cavity 340 formed between the two support frames 310, at least one of the two support frames 310 is provided with a first water passage 330, and at least one of the two support frames 310 is provided with a second water passage 350. The filter element 320 is provided corresponding to the second water passage 350. It can be understood that the filter module 300 is configured as two support frames 310 distributed along the axial direction and covering each other to form a water passage cavity 340 on the support of the two support frames 310. The filter module 300 can be formed by connecting the two support frames 310, which can reduce the production efficiency of the filter module 300.

[0085] Specifically, in the same filter module 300, the first water outlet 330 is formed on the opposite side of the two supporting frames 310.

[0086] Of course, this utility model is not limited to this. In the second embodiment, the filter module 300 may also include an inner ring, an outer ring, and two conical panels that connect the opposite ends of the inner ring and the outer ring respectively. The water passage cavity 340 is formed between the two conical panels, the inner ring, and the outer ring. The first water passage 330 is formed on the inner circumference of the inner ring, and the second water passage 350 is formed on the conical panel.

[0087] In the third embodiment, the filter module 300 may also include a support frame 310 and a base plate, with the base plate covering the side of the support frame 310 opposite to the filter element 320. The first water inlet 330 and the second water inlet 350 are formed on the support frame 310, and the water passage cavity 340 is formed between the support frame 310 and the base plate.

[0088] In the fourth embodiment, the plurality of support frames 310 include a plurality of side frames distributed circumferentially. The side frames are provided with through grooves and arc groove segments arranged circumferentially around the outer side wall of the through grooves. The plurality of side frames are connected to form a second water outlet 350 by covering the plurality of through grooves. The plurality of arc groove segments surround the water outlet 340 and the second water outlet 350. The filter element 320 covers the arc groove segments to cover the second water outlet 350.

[0089] In this embodiment, the filter module 300 includes two support frames 310 distributed along the axial direction. Each support frame 310 is provided with an inclined support portion 311 and a first ring portion 312 and a second ring portion 313 disposed at opposite ends of the inclined support portion 311.

[0090] The second water inlet 350 is formed on the inclined support portion 311, the first water inlet 330 is formed on the inner circumference of the first ring portion 312, and the two support frames 310 are connected through the second ring portion 313.

[0091] Reference Figures 1 to 4Optionally, the filter assembly 30 also includes a water distributor 60, which is connected to the filter module 300. The water distribution space of the water distributor 60 is positioned relative to the second water inlet 350. The water distributor 60 can achieve uniform water distribution, ensuring that the water flow can pass evenly through every part of the second water inlet 350 of the filter module 300. This uniform water distribution helps to improve the filtration efficiency of the filter assembly 30 and avoids differences in filtration effect caused by uneven water flow distribution. Moreover, through the uniform water distribution of the water distributor 60, the water flow can fully contact the filter element 320 in the filter module 300, thereby more effectively removing impurities, odors, heavy metal ions, and other harmful substances from the water. The water distributor 60 also provides a certain degree of protection for the filter module 300. Because it can ensure the uniform distribution of water flow, it avoids local scouring and wear of the filter module 300 by the water flow, thereby extending the service life of the filter module 300.

[0092] Optionally, the water distributor 60 has a fifth connecting structure on one side along the first direction. The fifth connecting structure is used to cooperate with the first connecting structure or the second connecting structure of the filter module 300 to fix the water distributor 60 and the filter module 300 together. It can be understood that the filter module 300 has a first connecting structure and a second connecting structure on both sides along the first direction, and the water distributor 60 has a fifth connecting structure along the first direction that cooperates with the first connecting structure or the second connecting structure of the filter module 300. This facilitates the connection between the filter and the filter module 300 and avoids setting a separate connecting structure on the filter module 300 to be adapted to the water distributor 60. In particular, when the filter assembly 30 includes multiple filter modules 300 distributed along the first direction, it is advantageous that any two filter modules 300 can be connected to each other, and any filter module 300 can be connected to the water distributor 60. This allows for connection without regard to the order, which can greatly improve the installation efficiency of the filter assembly 30. Moreover, it avoids setting a connection structure adapted to the fifth connection structure of the water distributor 60 on a single filter module 300. This would not only require the filter module 300 to be installed at the end, but also require additional processing technology, which would lead to increased installation costs and reduced installation efficiency.

[0093] Furthermore, the water distributor 60 and the filter module 300 are detachably connected, that is, the fifth connection structure is detachably connected to the first connection structure or the second connection structure. Because the detachable connection method allows for quick installation and disassembly, when the water distributor 60 or the filter module 300 needs to be repaired or replaced, the problem can be quickly located and resolved, avoiding unnecessary overall replacement and thus reducing maintenance costs.

[0094] Optionally, in one embodiment, the water distributor 60 and the filter module 300 are snap-fitted together; that is, the fifth connecting structure snaps into the first or second connecting structure. This eliminates the need for additional locking components such as screws and nuts during assembly, thus reducing manufacturing and assembly costs. Furthermore, the snap-fit ​​structure is flexible and can be customized to meet the actual needs of the water distributor 60 and the filter module 300, reducing material waste and improving material utilization. Secondly, the snap-fit ​​allows for rapid assembly and disassembly without complex tools and equipment. This significantly improves production and assembly efficiency, while also facilitating the maintenance and replacement of the filter assembly 30. Moreover, the snap-fit ​​operation is simple and easy to master. Both production line workers and ordinary consumers can easily complete the assembly and disassembly work.

[0095] Optionally, in the second embodiment, the water distributor 60 is threadedly connected to the filter module 300. That is, the fifth connecting structure is threadedly connected to the first or second connecting structure. The threaded connection, through the tight engagement of the threads, gives the threads of the water distributor 60 and the filter module 300 high tensile and compressive strength, meeting the requirements of various working conditions. Furthermore, after assembly, the threaded connection is less prone to loosening, maintaining a stable connection and ensuring the normal operation of the filter assembly 30. Secondly, the threaded connection has a relatively simple structure, is easy to process and assemble, reducing manufacturing and maintenance costs. Connection or disassembly can be achieved by rotating the threads of the water distributor 60 or the filter module 300, without the need for complex tools and equipment, improving work efficiency.

[0096] Optionally, in the third embodiment, the water distributor 60 is bonded to the filter module 300, that is, the fifth connecting structure is bonded to the first connecting structure or the second connecting structure. The bonding process is relatively simple, requiring no complex equipment or tools, and is easy and quick to operate. This allows the bonding to quickly and efficiently complete the connection task between the two second connecting parts. Since the equipment and material costs required for the bonding process are relatively low, the overall cost is also relatively economical. This helps to reduce production costs and improve economic efficiency. Secondly, bonding has good sealing performance; using bonding can improve the sealing performance between the water distributor 60 and the filter module 300, effectively preventing water penetration.

[0097] Optionally, in the fourth embodiment, the water distributor 60 is welded to the filter module 300, that is, the fifth connecting structure is welded to the first or second connecting structure. It can be understood that the welded connection creates a larger contact area on the connecting surface, thus providing better robustness and shock resistance. The welded connection will not loosen due to heavy loads, vibration, or temperature changes, thereby effectively enhancing the structural strength and stability of the workpiece. Moreover, during the welding process, the molten metal fills the gaps and micropores at the connection points, forming a continuous metal connection. This connection effectively prevents water seepage, ensuring the normal operation of the filter assembly 30.

[0098] The welding methods can include ultrasonic welding, hot plate welding, etc.

[0099] This utility model also proposes a pre-filter, which includes a filter assembly. The specific structure of the filter assembly is as described in the above embodiments. Since this pre-filter adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0100] This utility model also proposes a water system, which includes a pre-filter. The specific structure of the pre-filter is as described in the above embodiments. Since this water system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The water system includes at least related components from the pre-filter to the water outlet. For example, the water system may include household appliances such as water heaters, dishwashers, and water dispensers, or auxiliary components such as water pipes for domestic water use throughout the house.

[0101] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A filtration assembly for a pre-filter, characterized in that, The filtration assembly includes multiple filtration modules. Each filtration module has a water passage cavity inside and a first water passage and a second water passage that communicate with the water passage cavity. Each filtration module includes a filter element disposed at the second water passage, and the filter element is at least partially inclined. The multiple filtration modules are connected sequentially along a first direction.

2. The filter assembly as described in claim 1, characterized in that, The filter module is provided with a first connection structure and a second connection structure on both sides distributed along the first direction. The first connection structure of one filter module is used to detachably connect with the second connection structure of the other filter module so that the two filter modules are fixed together.

3. The filter assembly as described in claim 2, characterized in that, One of the first connection structure and the second connection structure is configured as a second card protrusion, and the other is configured as a second card slot that cooperates with the second card protrusion.

4. The filter assembly as described in claim 3, characterized in that, The second card slot is configured as a second annular groove, and the second card protrusion is configured as a second annular protrusion corresponding to the second annular groove.

5. The filter assembly as described in claim 2, characterized in that, One of the first connection structure and the second connection structure is configured as a second hook, and the other is configured as a second hook groove that cooperates with the second hook.

6. The filter assembly as described in claim 5, characterized in that, The second hook groove is configured as an annular second hook groove, and the second hook is configured as a plurality of them, with the plurality of second hooks spaced apart along the circumference.

7. The filter assembly as described in claim 2, characterized in that, A first connection structure of one of the filter modules is used for threaded connection with a second connection structure of another filter module.

8. The filter assembly as described in claim 2, characterized in that, The filtration assembly also includes a water distributor, which is connected to the filtration module, and the water distribution space of the water distributor is set relative to the second water inlet.

9. The filter assembly as claimed in claim 8, characterized in that, The water distributor is provided with a fifth connection structure on one side along the first direction. The fifth connection structure is used to cooperate with the first connection structure or the second connection structure of the filter module to fix the water distributor and the filter module together.

10. The filter assembly as claimed in claim 9, characterized in that, The fifth connection structure is used to engage with the first or second connection structure of the filter module.

11. The filter assembly as claimed in claim 1, characterized in that, The two adjacent filter modules are connected through the first water inlet, and the walls of the first water inlets of the two adjacent filter modules abut against each other.

12. The filter assembly as claimed in claim 1, characterized in that, The filtration module includes a support frame, the water passage cavity is formed within the support frame, the first water inlet and the second water inlet are formed within the support frame, and the filter element is disposed on the support frame and is disposed corresponding to the second water inlet.

13. The filter assembly as claimed in claim 1, characterized in that, The filter module includes two support frames distributed and connected along the axial direction. The water passage cavity is formed between the two support frames. At least one of the two support frames is provided with the first water passage, and at least one of the two support frames is provided with the second water passage. The filter element is set corresponding to the second water passage.

14. The filter assembly according to any one of claims 1 to 13, characterized in that, The filter element is arranged in a conical or pyramidal shape.

15. A pre-filter, characterized in that, The pre-filter includes the filtration assembly as described in any one of claims 1 to 14.

16. A water supply system, characterized in that, Includes the pre-filter as described in claim 15.

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