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, wherein the filter assembly includes hollow pipe and filter assembly, including filter module and filter piece, the filter module is sleeved on the hollow pipe, the inside of filter module forms the water cavity, the filter piece passes through the water cavity, the filter piece passes through the water cavity, and the filter piece passes through the water cavity. A water passing cavity is formed in the filter module and communicated with an inner cavity of the hollow pipe, a second water passing opening communicated with the water passing cavity is further formed in the filter module, the filter part is arranged in the second water passing opening, at least part of the filter part is obliquely arranged, and in a filter flow path of the pre-filter, the water passing cavity is communicated with an inner cavity of the hollow pipe. The second water passing opening, the water passing cavity and the inner cavity are sequentially distributed in the upstream and downstream 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 pre-filter technology, and in particular to a filter assembly, 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 comprising:

[0006] Hollow tube; and

[0007] A filtration assembly includes a filtration module and a filter element. The filtration module is sleeved on the hollow tube. The interior of the filtration module forms a water passage cavity, which communicates with the inner cavity of the hollow tube. The filtration module also forms a second water passage port that communicates with the water passage cavity. The filter element is disposed at the second water passage port, and the filter element is at least partially inclined. In the filtration flow path of the pre-filter, the second water passage port, the water passage cavity, and the inner cavity are distributed sequentially upstream and downstream.

[0008] In one embodiment, the hollow tube and the filter module are sealed together.

[0009] In one embodiment, a sealing ring is provided between the hollow tube and the filter module.

[0010] In one embodiment, the filter module is provided with at least one sealing ring on each of its opposite sides along the axial direction of the hollow tube; and / or

[0011] One of the filter module and the hollow tube is provided with a mounting groove, and the sealing ring is provided in the mounting groove and abuts against the other.

[0012] In one embodiment, the filtration assembly further includes a water distributor, the water distribution space of which is disposed relative to the second water inlet.

[0013] In one embodiment, the water distributor is connected to the hollow pipe.

[0014] In one embodiment, the water distributor and the hollow tube are integrally formed; and / or

[0015] A reinforcing ring is provided at the connection point between the water distributor and the hollow pipe.

[0016] In one embodiment, the water distributor includes a third water inlet and a plurality of guide vanes. The third water inlet is connected to the inner cavity. The water passage space is arranged circumferentially around the third water inlet. The plurality of guide vanes are arranged at intervals circumferentially along the water passage space, and the guide vanes gradually tilt towards the filter module along the axial direction.

[0017] In one embodiment, the filter assembly further includes a limiting member disposed at the end of the hollow tube away from the water distributor, so as to restrict the filter module between the water distributor and the limiting member.

[0018] In one embodiment, the limiting member includes a cylindrical portion and a limiting ring portion disposed around the periphery of the cylindrical portion. The cylindrical portion is inserted into the hollow tube, and the limiting ring portion is connected to the filter module.

[0019] In one embodiment, the cylindrical portion is bonded or welded to the hollow tube; and / or

[0020] The limiting ring and the end face of the filter module abut against each other.

[0021] In one embodiment, multiple filter modules are provided, and the multiple filter modules are sequentially sleeved on the hollow tube along the axial direction of the hollow tube.

[0022] In one embodiment, the hollow tube has at least one connecting hole corresponding to each of the filter modules.

[0023] In one embodiment, the ends of two adjacent filter modules abut each other; or

[0024] The ends of two adjacent filter modules are spaced apart.

[0025] In one embodiment, the filter module includes two support frames distributed axially along the hollow tube, and the water passage cavity is formed between the two support frames.

[0026] In one embodiment, the support frame includes a first ring portion, a second ring portion, and an inclined support portion connecting the first ring portion and the second ring portion. The second water outlet is formed on the inclined support portion, and the two support frames are connected through the first ring portion and / or the second ring portion.

[0027] In one embodiment, the filter element is arranged in a ring-cone shape.

[0028] A pre-filter comprising the aforementioned filtering components.

[0029] This utility model also proposes a water system, including the aforementioned pre-filter.

[0030] The technical solution of this utility model increases the filtration area of ​​the filter element by at least partially tilting it, making it planar relative to the filter element itself. This allows for a larger filtration area at the same axial height, enabling the filter element to withstand a greater flow load and improving filtration efficiency. Furthermore, because the filtration area is sufficiently large, even if localized areas of the filter element become clogged, the remaining areas can continue to withstand a significant flow load, extending the service life of the filter module, reducing replacement frequency, and thus lowering maintenance costs. Secondly, the filter module in this solution is fitted within the hollow tube, which improves the radial strength of the filter module. Attached Figure Description

[0031] 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.

[0032] Figure 1 A first-view structural schematic diagram of an embodiment of the filter assembly provided by this utility model;

[0033] Figure 2 A second-view structural schematic diagram of an embodiment of the filter assembly provided by this utility model;

[0034] Figure 3 A cross-sectional view of the first embodiment of the filter assembly provided by this utility model;

[0035] Figure 4 A partial cross-sectional view of the second embodiment of the filter assembly provided by this utility model;

[0036] Figure 5 A partial cross-sectional view of the third embodiment of the filter assembly provided by this utility model;

[0037] Figure 6 An exploded view of the filter assembly provided by this utility model;

[0038] Figure 7 A schematic diagram of the structure of multiple filter modules connected together in the filter assembly provided by this utility model;

[0039] Figure 8 A first-view structural schematic diagram of a filter module of a filter assembly provided by this utility model;

[0040] Figure 9 A second-view structural schematic diagram of an embodiment of the filter module of the filter assembly provided by this utility model;

[0041] Figure 10 An exploded structural diagram of an embodiment of the filter module of the filter assembly provided by this utility model;

[0042] Figure 11 An exploded view of the supporting frame of the filter module of the filter assembly provided by this utility model.

[0043] Figure 12 A cross-sectional structural schematic diagram of the first embodiment of the filter module of the filter assembly provided by this utility model;

[0044] Figure 13 A schematic diagram of the water distributor and hollow tube of the filter assembly provided by this utility model;

[0045] Figure 14 A first-view structural schematic diagram of the water distributor of the filter assembly provided by this utility model.

[0046] Explanation of icon numbers:

[0047] 30. Filter assembly; 300. Filter module; 310. Support frame; 311. Inclined support; 312. First ring; 313. Second ring; 320. Filter element; 340. Water passage cavity; 350. Second water outlet; 360. Hollow tube; 361. Connecting hole; 362. Reinforcing ring; 370. Limiting element; 371. Cylindrical part; 372. Limiting ring; 380. Sealing ring; 60. Water distributor; 62. Third water outlet; 63. Guide vane.

[0048] 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

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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. Thus, this process achieves coarse filtration of the raw water.

[0057] However, the existing pre-filter's filter element 30 has a cylindrical filter structure with a small filtration area, resulting in low filtration efficiency.

[0058] Reference Figures 1 to 3 Therefore, in order to solve the above problems, this utility model proposes a filter module 300. In one embodiment of this utility model, the filter module 30 is used as a pre-filter. The filter module 30 includes a hollow tube 360 ​​and a filter assembly 30. The filter assembly 30 includes a filter module 300 and a filter element 320. The filter module 300 is sleeved on the hollow tube 360. A water passage cavity 340 is formed inside the filter module 300. The water passage cavity 340 is connected to the inner cavity of the hollow tube 360. The filter module 300 also forms a second water passage 350 connected to the water passage cavity 340. The filter element 320 is disposed in the second water passage 350, and the filter element 320 is at least partially inclined. In the filtration flow path of the pre-filter, the second water passage 350, the water passage cavity 340 and the inner cavity are distributed sequentially upstream and downstream.

[0059] 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.

[0060] Secondly, the filter module 300 of this solution is fitted onto the hollow tube 360, which can improve the radial strength of the filter module 300.

[0061] Reference Figure 3 and Figure 12 It should be noted that the filtration flow path of filter module 300 is as follows: Figure 3As 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 inner cavity are distributed sequentially upstream and downstream. That is, when the pre-filter filters the water flow, the water flow in the filter bottle's filtration chamber passes through the second water inlet 350, the water passage 340, and the inner cavity of the hollow tube 360 ​​in sequence, and then flows into the water-using end from the inner cavity of the hollow tube 360.

[0062] The backflow path of filter module 300 is as follows: Figure 3 As shown by the dashed arrow, when the pre-filter is in the backwashing state, the water flow from the water end flows sequentially into the inner cavity of the hollow tube 360, the water passage 340, and the second water outlet 350, thereby backwashing and discharging the large particles intercepted on the filter element 320, thus improving the service life of the pre-filter.

[0063] Furthermore, 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] Reference Figure 3 Optionally, the hollow tube 360 ​​and the filter module 300 are sealed together; this can improve the sealing performance of the filter module 300 and the hollow tube 360, preventing unfiltered water from entering the water passage cavity 340 or the inner cavity through the gap between the hollow tube 360 ​​and the filter module 300, thereby contaminating the filtered water; thus, the sealed connection between the hollow tube 360 ​​and the filter module 300 can improve the filtration effect of the filter assembly 30.

[0069] Furthermore, a sealing ring 380 is provided between the hollow tube 360 ​​and the filter module 300; this sealing structure is simple, easy to install and disassemble, and the sealing ring 380 can be reused, which helps to reduce the cost of the filter assembly 30. Of course, this solution is not limited to this. In other embodiments, a sealant can also be provided between the hollow tube 360 ​​and the filter module 300 to achieve a sealed connection between the hollow tube 360 ​​and the filter module 300.

[0070] The sealing ring 380 can be made of silicone, rubber, or other materials, and no specific restrictions are imposed here.

[0071] Furthermore, the filter module 300 is provided with at least one sealing ring 380 on each of the opposite sides along the axial direction of the hollow tube 360; this can further improve the sealing performance between the filter module 300 and the hollow tube 360.

[0072] Optionally, one of the filter module 300 and the hollow tube 360 ​​is provided with an installation groove, and the sealing ring 380 is disposed in the installation groove and abuts against the other; it can be understood that the installation groove can limit the sealing ring 380, thereby improving the stability of the installation of the sealing ring 380.

[0073] In this embodiment, the mounting groove is disposed on the filter module 300. Since the outer surface of the hollow tube 360 ​​is columnar, the surface area of ​​the hollow tube 360 ​​corresponding to the filter module 300 is larger, while the surface area of ​​the filter module 300 corresponding to the outer surface of the hollow tube 360 ​​is smaller. Compared to disposing of the mounting groove on the hollow tube 360, disposing of the mounting groove on the filter module 300 is more advantageous for ensuring the sealing ring 380 abuts between the hollow tube 360 ​​and the filter module 300, thus reducing manufacturing complexity. Of course, this solution is not limited to this; in other embodiments, the mounting groove can also be disposed on the outer surface of the hollow tube 360.

[0074] Reference Figures 1 to 5Optionally, the filter assembly 30 further includes a water distributor 60, the water passage space of which is positioned relative to the second water inlet 350. It is understood that the water distributor 60 can achieve uniform water distribution, ensuring that water flows evenly through every part of the second water inlet 350 of the filter module 300. This uniform water distribution helps 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 ensures the uniform distribution of water flow, it avoids localized scouring and wear of the filter module 300, thereby extending the service life of the filter module 300.

[0075] Optionally, the water distributor 60 is connected to the hollow tube 360; this can reduce the installation steps of the filter assembly 30, thereby improving the production efficiency of the filter assembly 30.

[0076] Reference Figure 6 and Figure 13 Optionally, the water distributor 60 and the hollow tube 360 ​​are integrally formed. It is understood that the integral forming process is not only simple, but also allows for installation where only the filter module 300 and the hollow tube 360 ​​need to be connected, without requiring the water distributor 60 and the filter module 300 to be fixed. This improves the processing efficiency of the water distributor 60 and the hollow tube 360. Furthermore, the integral forming process also enhances the connection strength between the water distributor 60 and the hollow tube 360. Of course, this solution is not limited to this; in other embodiments, the water distributor 60 and the hollow tube 360 ​​can also be welded or bonded together.

[0077] Furthermore, a reinforcing ring 362 is provided at the connection position between the water distributor 60 and the hollow tube 360; this can improve the strength of the connection position between the water distributor 60 and the hollow tube 360. Of course, in other embodiments, the reinforcing ring 362 may not be provided.

[0078] Reference Figure 1 , Figure 3 , Figure 13 and Figure 14Optionally, the water distributor 60 includes a third water inlet 62 and multiple guide vanes 63. The third water inlet 62 communicates with the inner cavity, and the water passage space is arranged circumferentially around the third water inlet 62. The multiple guide vanes 63 are spaced apart circumferentially along the water passage space, and the guide vanes 63 gradually tilt towards the filter module 300 along the axial direction. The guide vanes 63 allow the water to enter the filter module 300 in a spiral shape, which helps the fluid to be distributed more evenly in the filter bottle and other equipment. Compared with the traditional direct water distribution method, spiral water distribution can reduce the unevenness of fluid distribution and improve the treatment effect. Spiral flow can reduce or avoid fluid dead zones inside the filter bottle, that is, areas where the fluid is difficult to reach or where the flow rate is extremely low. This helps to improve the overall treatment efficiency of the equipment and reduce underutilized space. The spiral water flow can also reduce the risk of clogging at the outlet of the water distributor 60. Because the fluid constantly changes direction during the spiral flow, this helps reduce the deposition and accumulation of impurities near the outlet of the water distributor 60, thereby extending the service life of the water distributor 60. Of course, this application is not limited to this; in other embodiments, the guide vanes 63 may also be arranged perpendicular to the filter module 300.

[0079] Reference Figures 3 to 5 Optionally, the filter assembly 30 further includes a limiting member 370, which is disposed at the end of the hollow tube 360 ​​away from the water distributor 60, so as to restrict the filter module 300 between the water distributor 60 and the limiting member 370; such an installation method is simple and reduces the use of fasteners (such as adhesive, screws, snap-fit ​​structures, etc.), thereby helping to reduce production costs.

[0080] Secondly, one end of the inner cavity of the hollow tube 360 ​​is connected to the water-using end, while the limiting member 370 can block the end of the hollow tube 360 ​​that is far away from the water-using end. This allows one component to serve multiple purposes, which is beneficial for saving structure, reducing costs and improving production efficiency.

[0081] Optionally, the limiting member 370 includes a cylindrical portion 371 and a limiting ring portion 372 disposed around the cylindrical portion 371. The cylindrical portion 371 is inserted into the hollow tube 360, and the limiting ring portion 372 is connected to the filter module 300. This increases the connection area between the limiting member 370 and the hollow tube 360, thereby improving the connection stability between the limiting member 370 and the filter module 300. Of course, this solution is not limited to this. In other embodiments, the limiting member 370 can also be in the form of a sealing plate, which is connected to the filter module 300. This connection can be adhesive, glued, or snap-fit, etc. The installation method of the limiting member 370 is not limited here.

[0082] Furthermore, the cylindrical portion 371 is bonded to the hollow tube 360. It is understood that the bonding process is relatively simple, requiring no complex equipment or tools, and is quick and easy to operate. This allows the bonding process to quickly and efficiently complete the connection between the cylindrical portion 371 and the hollow tube 360. Since the equipment and material costs required for the bonding process are relatively low, the overall cost is also economical. This helps reduce production costs and improve economic efficiency. Secondly, bonding provides good sealing performance; using bonding improves the sealing between the cylindrical portion 371 and the hollow tube 360, effectively preventing water penetration.

[0083] Furthermore, the cylindrical portion 371 is welded to the hollow tube 360. It is understood that welding creates a larger contact area on the joint surface, 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 cylindrical portion 371 and the hollow tube 360. Moreover, during the welding process, the molten metal fills the gaps and micropores at the joint, forming a continuous metal connection. Welding improves the sealing performance of the cylindrical portion 371 and the hollow tube 360, effectively preventing water infiltration and ensuring the normal operation of the filter assembly 30.

[0084] Furthermore, the limiting ring 372 and the end face of the filter module 300 abut against each other. It can be understood that the limiting ring 372 and the water distributor 60 together restrict the position of the filter module 300. This can save installation steps and improve the efficiency of installation and disassembly. Of course, this solution is not limited to this. In other embodiments, the limiting ring 372 can also be snapped into the filter module 300. Specifically, the limiting ring 372 is snapped into the first connection structure or the second connection structure of the filter module 300.

[0085] Reference Figures 3 to 7 Optionally, in this embodiment, multiple filter modules 300 are provided. The multiple filter modules 300 are sequentially sleeved on the hollow tube 360 ​​along the axial direction of the hollow tube 360. It can be understood that after the hollow tube 360 ​​and the water distributor 60 are integrally formed, the multiple filter modules 300 are first sequentially sleeved on the hollow tube 360 ​​along the axial direction of the hollow tube 360, and then the multiple filter modules 300 are restricted between the water distributor 60 and the limiting member 370 by the limiting member 370, thereby realizing the installation of the filter assembly 30. Such installation is simple and efficient.

[0086] It 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 hollow tube 360, and adjacent filter modules 300 are connected through the inner cavity of the hollow tube 360. In other embodiments, the filter assembly 30 may also have only one filter module 300.

[0087] It should be noted that the axial direction referred to in this solution is the axial direction of the inner ring edge of the filter element 320, that is, the height direction of the conical surface of the filter element 320. The axial direction is equivalent to the direction of the perpendicular line drawn from the vertex of the conical surface to the bottom surface, and can also be understood as the axial direction or length direction of the hollow tube.

[0088] The circumferential direction referred to in this solution is the circumferential direction around the aforementioned axis, which can be understood as the circumferential direction of the inner ring edge of the filter element 320, or the circumferential direction of the hollow tube 360.

[0089] The hollow tube 360 ​​is provided with at least one connecting hole 361 corresponding to each of the filter modules 300. This allows the filtered water in each filter module 300 to flow directly into the inner cavity of the hollow tube 360, thereby shortening the water flow path and improving the outflow efficiency of the filtered water.

[0090] Furthermore, in one embodiment, the ends of two adjacent filter modules 300 abut each other; this can increase the sealing performance of the two adjacent filter modules 300.

[0091] Furthermore, in the second embodiment, the ends of two adjacent filter modules 300 are spaced apart; it can be understood that each filter module 300 is connected to the inner cavity of the hollow tube 360, which can accelerate the direct flow of water in the filter cavity to the inner cavity of the hollow tube 360.

[0092] In this embodiment, the filter module 300 includes two support frames 310 distributed axially along the hollow tube 360, and the water passage cavity 340 is formed between the two support frames 310. It can be understood that configuring the filter module 300 as two axially distributed support frames 310 that overlap each other forms the water passage cavity 340 within the support frames 310. The filter module 300 is formed by connecting the two support frames 310, thus reducing the production efficiency of the filter module 300. However, this invention is not limited to this. In a second embodiment, the filter module 300 may also include an inner ring, an outer ring, and two conical panels connecting the opposite ends of the inner and outer rings, with the water passage cavity 340 formed between the two conical panels, the inner ring, and the outer ring. The filter module 300 is fitted onto the hollow tube 360 ​​through the inner ring.

[0093] 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.

[0094] 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.

[0095] Furthermore, the support frame 310 includes a first ring portion 312, a second ring portion 313, and an inclined support portion 311 connecting the first ring portion 312 and the second ring portion 313. The second water outlet 350 is formed on the inclined support portion 311. The two support frames 310 are connected through the first ring portion 312 and / or the second ring portion 313, which can reduce the impact of the connection structure on the volume of the water passage cavity 340.

[0096] In this embodiment, in the same filter module 300, the two support frames 310 are connected by two second ring portions 313.

[0097] Furthermore, the end faces of the first ring portion 312 of two adjacent filter modules 300 abut against each other.

[0098] Reference Figures 7 to 11 Optionally, the inclined support portion 311 forms a plurality of second water inlets 350 spaced apart circumferentially. The filter element 320 is disposed covering the inclined support portion 311. It can be understood that providing multiple second water inlets 350 can increase the water flow of the filter module 300, thereby improving the filtration efficiency. Moreover, providing an annular filter element 320 and directly covering the inclined support portion 311 can increase the installation stability of the filter element 320. Compared with the scheme of providing one filter element 320 for each second water inlet 350, this can reduce the installation process. Of course, this application is not limited to this. In other embodiments, the filter module 300 may also provide one filter element 320 corresponding to one second water inlet 350.

[0099] Optionally, the inclined support portion 311 includes a plurality of circumferentially spaced support ribs, with a second water inlet 350 formed between every two adjacent support ribs. The hollow tube 360 ​​is disposed on the inner circumference of the first ring portion 312. Such a support frame 310 is simple to form, and the support ribs can increase the strength of the inclined support portion 311 and reduce the probability of the inclined support portion 311 breaking when the water flow is too large. Of course, the present invention is not limited to this. In other embodiments, the inclined support portion 311 can also be configured as a conical plate, with a plurality of second water inlets 350 formed on the conical plate.

[0100] This utility model also proposes a pre-filter, which includes a filter component 30. The specific structure of the filter component 30 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.

[0101] 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.

[0102] 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, include: Hollow tube; and A filtration assembly includes a filtration module and a filter element. The filtration module is sleeved on the hollow tube. The interior of the filtration module forms a water passage cavity, which communicates with the inner cavity of the hollow tube. The filtration module also forms a second water passage port that communicates with the water passage cavity. The filter element is disposed at the second water passage port, and the filter element is at least partially inclined. In the filtration flow path of the pre-filter, the second water passage port, the water passage cavity, and the inner cavity are distributed sequentially upstream and downstream.

2. The filter assembly as described in claim 1, characterized in that, The hollow tube and the filter module are sealed together.

3. The filter assembly as described in claim 2, characterized in that, A sealing ring is provided between the hollow tube and the filter module.

4. The filter assembly as described in claim 3, characterized in that, The filter module is provided with at least one sealing ring on each of its opposite sides along the axial direction of the hollow tube; and / or One of the filter module and the hollow tube is provided with a mounting groove, and the sealing ring is provided in the mounting groove and abuts against the other.

5. The filter assembly as described in claim 1, characterized in that, The filtration assembly also includes a water distributor, the water distribution space of which is positioned relative to the second water inlet.

6. The filter assembly as described in claim 5, characterized in that, The water distributor is connected to the hollow pipe.

7. The filter assembly as described in claim 6, characterized in that, The water distributor and the hollow tube are integrally formed; and / or A reinforcing ring is provided at the connection point between the water distributor and the hollow pipe.

8. The filter assembly as described in claim 5, characterized in that, The water distributor includes a third water inlet and multiple guide vanes. The third water inlet is connected to the inner cavity. The water passage space is arranged around the circumference of the third water inlet. The multiple guide vanes are arranged at intervals along the circumference of the water passage space, and the guide vanes gradually tilt towards the filter module along the axial direction.

9. The filter assembly as claimed in claim 5, characterized in that, The filter assembly further includes a limiting member located at the end of the hollow tube away from the water distributor to restrict the filter module between the water distributor and the limiting member.

10. The filter assembly as claimed in claim 9, characterized in that, The limiting component includes a cylindrical part and a limiting ring part disposed around the periphery of the cylindrical part. The cylindrical part is inserted into the hollow tube, and the limiting ring part is connected to the filter module.

11. The filter assembly as claimed in claim 10, characterized in that, The cylindrical portion is bonded or welded to the hollow tube; and / or The limiting ring and the end face of the filter module abut against each other.

12. The filter assembly according to any one of claims 1 to 11, characterized in that, The filter module is provided in multiple ways, and the multiple filter modules are sequentially sleeved on the hollow tube along the axial direction of the hollow tube.

13. The filter assembly as claimed in claim 12, characterized in that, The hollow tube has at least one connecting hole corresponding to each of the filter modules.

14. The filter assembly as claimed in claim 12, characterized in that, The ends of two adjacent filter modules abut each other; or The ends of two adjacent filter modules are spaced apart.

15. The filter assembly according to any one of claims 1 to 11, characterized in that, The filtration module includes two support frames distributed along the axial direction of the hollow tube, and the water passage cavity is formed between the two support frames.

16. The filter assembly as claimed in claim 15, characterized in that, The support frame includes a first ring portion, a second ring portion, and an inclined support portion connecting the first ring portion and the second ring portion. The second water outlet is formed on the inclined support portion, and the two support frames are connected through the first ring portion and / or the second ring portion.

17. The filter assembly as claimed in claim 1, characterized in that, The filter element is arranged in a ring-cone shape.

18. A pre-filter, characterized in that, The pre-filter includes the filter assembly as described in any one of claims 1 to 17.

19. A water supply system, characterized in that, Includes the pre-filter as described in claim 18.

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