Filtering module, filtering assembly, pre-filter and water consumption system

Abstract

The invention discloses a filtering module, a filtering assembly, a pre-filter and a water using system, and relates to the technical field of water using systems.The filtering module comprises a plurality of supporting frameworks and a filtering piece, a water passing cavity is defined by the supporting frameworks, and a first water passing opening and a second water passing opening which are communicated with the water passing cavity are formed; in a filtering flow path of the pre-filter, the second water passing port, the water passing cavity and the first water passing port are sequentially distributed along upstream and downstream; the filtering part is arranged on the supporting framework and corresponds to the second water passing opening, and at least part of the filtering part is obliquely arranged. According to the technical scheme, the filtering area of the filtering module can be increased.

Description

Technical Field

[0001] The invention relates to the technical field of water use systems, and in particular to a filter module, a filter assembly, a pre-filter and a water use system. Background Art

[0002] At present, the pre-filter is the first coarse filtration equipment for the whole house water. It can filter out mud, rust, large particles in tap water, etc., thereby preventing a large amount of precipitated impurities generated in the urban and community water supply network from causing harm to the human body. It also plays an active pre-protection role in concealed pipes, faucets, water heating, water heaters, boilers, central air conditioners, washing machines, dishwashers, coffee machines and other water appliances (water purifiers, pure water machines, water dispensers).

[0003] However, the filter module of the existing pre-filter is a straight-cylinder filter screen structure with a small filter area, which results in a low filter efficiency of the filter module. Summary of the invention

[0004] The main purpose of the present invention is to provide a filter module, a filter assembly, a pre-filter and a water use system, aiming to increase the filter area of ​​the filter module.

[0005] To achieve the above object, the filtering module proposed in the present invention is applied to a pre-filter, and the filtering module includes: A plurality of support frames, wherein the plurality of support frames enclose a water passage cavity, and form a first water passage port and a second water passage port connected to the water passage cavity, wherein in the filtering flow path of the pre-filter, the second water passage port, the water passage cavity and the first water passage port are sequentially distributed along the upstream and downstream; and A filter element is disposed on the support frame and is arranged corresponding to the second water outlet, and at least a portion of the filter element is inclined.

[0006] In one embodiment, a plurality of the support frames are sequentially distributed along the axial direction or the circumferential direction of the first water outlet.

[0007] In one embodiment, the plurality of support frames include 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.

[0008] In one embodiment, the support skeleton includes a first ring portion, a second ring portion, and an oblique support portion connecting the first ring portion and the second ring portion, the second water outlet is formed on the oblique support portion, and the two support skeletons are connected through the first ring portion and / or the second ring portion.

[0009] In one embodiment, the two second ring parts are detachably connected.

[0010] In one embodiment, the two second ring portions are threadedly connected.

[0011] In one embodiment, the oblique support portion includes a plurality of support ribs spaced apart along the circumferential direction, and a second water outlet is formed between every two adjacent support ribs.

[0012] In one embodiment, the support frame is integrally formed.

[0013] In one embodiment, a plurality of the support frames are bonded or welded together.

[0014] In one embodiment, the support frame is provided with a connection surface, and the connection surface is arranged in a stepped surface or a plane, and a plurality of the support frames are bonded or welded via the stepped surface or the plane.

[0015] In one embodiment, the filter element is arranged in an annular shape and has an inner annular edge and an outer annular edge, and the outer annular edge is located on one axial side of the inner annular edge.

[0016] In one embodiment, the filter element is provided in the form of an annular pyramidal surface or an annular conical surface.

[0017] In one embodiment, the filter element is in the form of an annular conical surface, and the annular conical surface is arranged in a straight line or a concave arc.

[0018] In one embodiment, the cone angle of the filter element is in the range of 150°≤α≤170°.

[0019] The present invention further provides a filter assembly, comprising a plurality of the above-mentioned filter modules, wherein two adjacent filter modules are connected via the first water outlet.

[0020] The present invention also provides a pre-filter, which comprises the above-mentioned filter assembly.

[0021] The present invention also provides a water use system, comprising the above-mentioned pre-filter.

[0022] The technical solution of the present invention increases the filtering area of ​​the filter element by setting the filter element at least partially at an angle. Under the condition of the same axial height, the filtering area of ​​the filter element can be increased. Due to the increase in the filtering area of ​​the filter element, it can withstand a larger flow load and improve the filtering efficiency. Moreover, since the filtering area of ​​the filter element is large enough, even if a local area of ​​the filter element is clogged, the remaining area of ​​the filter element can continue to withstand a larger flow load, which helps to extend the service life of the filter module, reduce the replacement frequency, and thus reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0024] Figure 1 A schematic structural diagram of a first viewing angle of an embodiment of a filtering module provided by the present invention; Figure 2 A structural schematic diagram of a second viewing angle of an embodiment of a filtering module provided by the present invention; Figure 3 A schematic diagram of an exploded structure of an embodiment of a filter module provided by the present invention; Figure 4 A schematic diagram of the exploded structure of the support frame of the filter module provided by the present invention; Figure 5 A schematic cross-sectional view of a first embodiment of a filter module provided by the present invention; Figure 6 A schematic cross-sectional view of a second embodiment of a filter module provided by the present invention; Figure 7 A schematic structural diagram of a support frame of a filter module provided by the present invention from a first perspective; Figure 8 A schematic structural diagram of a support frame of a filter module provided by the present invention from a second viewing angle; Fig. 9 This is a schematic cross-sectional structural diagram of the support framework of the filter module provided by the present invention.

[0025] Description of Figure Numbers: 300, filter module; 310, support frame; 311, oblique support portion; 312, first ring portion; 313, second ring portion; 320, filter screen; 330, first water outlet; 340, water passage cavity; 350, second water outlet.

[0026] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0030] Water use systems, such as whole-house water purification systems, are usually equipped with pre-filters, which are used to filter large particles in tap water. This not only ensures the safety of residents' water use, but also extends the service life of home appliances, prevents blockage of household water pipes, and improves the health of residents. The pre-filter is the first coarse filtration device in the whole-house water purification system. It is a physical filtration device that is mainly used to intercept large particles larger than 40 microns to protect the safety of back-end water use.

[0031] Some pre-filters on the market usually have a flushing function, that is, they can be cleaned regularly to discharge the large particles that were previously intercepted, thereby increasing the service life of the pre-filter.

[0032] The pre-filter comprises a filter bottle and a valve head connected to the filter bottle, the filter bottle has a water filter cavity, the valve head has a water inlet and a water outlet connected to the water filter cavity, the water inlet is connected to the water supply end, and the water outlet is connected to the water use end.

[0033] It should be noted that the water supply end can be a water pipe, a water tower or well water, and the water use end can be a faucet, a shower or a drinking water outlet, and this application does not make specific limitations on this.

[0034] Furthermore, the pre-filter also includes a filter module 300 disposed in the water filter cavity. The filter module 300 is disposed in the water filter cavity. After raw water (such as tap water or well water) flows into the water inlet from the external water source end, it can be filtered out of large particles in the water filter cavity by the filter module 300 when flowing through the water filter cavity. The filtered water then flows out of the pre-filter from the water outlet and flows to the water use end. In this way, through this process, the raw water can be roughly filtered.

[0035] However, the filter module 300 of the existing pre-filter is a straight-cylinder filter screen structure with a small filter area, so that the filter efficiency of the filter module 300 is low.

[0036] Reference Figures 1 to 3 Therefore, in order to solve the above-mentioned problems, the present invention proposes a filter module 300. In one embodiment of the present invention, the filter module 300 is applied to a pre-filter. The filter module 300 includes a filter element 320 and a plurality of support frames 310. The plurality of support frames 310 enclose a water passage cavity 340 and form a first water passage 330 and a second water passage 350 connected to the water passage cavity 340. In the filter flow path of the pre-filter, the second water passage 350, the water passage cavity 340 and the first water passage 330 are sequentially distributed along the upstream and downstream. The filter element 320 is arranged on the support frame 310 and is arranged corresponding to the second water passage 350. The filter element 320 is at least partially arranged to be inclined.

[0037] The technical solution of the present invention increases the filtering area of ​​the filter element 320 relative to the planar filter element 320 by at least partially tilting the filter element 320. Under the condition of the same axial height, the filtering area of ​​the filter element 320 can be increased. Due to the increase in the filtering area of ​​the filter element 320, it can withstand a larger flow load and improve the filtering efficiency. Moreover, since the filtering area of ​​the filter element 320 is large enough, even if a local area of ​​the filter element 320 is clogged, the remaining area of ​​the filter element 320 can continue to withstand a larger flow load, which helps to extend the service life of the filter module, reduce the replacement frequency, and thus reduce maintenance costs.

[0038] Moreover, the technical solution of the present invention forms a water passage cavity 340 by enclosing a plurality of the support frames 310. During the manufacturing process, if a problem occurs with a support frame 310, only the support frame 310 needs to be replaced without scrapping the entire filter module 300, thereby reducing the scrap rate.

[0039] Reference Figure 5 It should be noted that the filtering flow path of the filtering module 300 is as follows Figure 5As shown by the solid arrows in the figure, in the filtering flow path of the pre-filter, the second water outlet 350, the water passage cavity 340 and the first water outlet 330 are sequentially distributed along the upstream and downstream, that is, when the pre-filter filters the water flow, the water flow in the filtering cavity of the filter bottle passes through the second water outlet 350, the water passage cavity 340 and the first water outlet 330 in sequence, and then flows into the water use end from the first water outlet 330.

[0040] The flushing flow path of the filter module 300 includes a forward flushing flow path and a back flushing flow path. Figure 5 As shown by the dotted arrow, when the pre-filter is in the backwash state, the water flow at the water end flows into the first water outlet 330, the water chamber 340 and the second water outlet 350 in sequence, and then the large particles intercepted by the filter element 320 are backwashed and discharged, thereby increasing the service life of the pre-filter.

[0041] The multiple indicated in this solution can be understood as greater than or equal to two.

[0042] Furthermore, the filter element 320 is arranged in a ring shape, and the outer ring edge of the filter element 320 is located on the axial side of the inner ring edge of the filter element 320, that is, the inner ring edge and the outer ring edge are not at the same height in the axial direction. Under the axial condition of the same height, the filtering area of ​​the filter element 320 can be increased, which means that under the same flow rate, the filter element 320 of this scheme can withstand a larger flow load and improve the filtering efficiency. Moreover, since the filtering area of ​​the filter element 320 of this scheme is large enough, even if a local area of ​​the filter element 320 is clogged, the remaining area of ​​the filter element 320 can continue to withstand a larger flow load, which helps to extend the service life of the filter module 300 and reduce the replacement frequency, thereby reducing maintenance costs.

[0043] Specifically, the filter element 320 is arranged in an annular shape, and the outer ring edge is located on the axial side of the inner ring edge; this can increase the distance between the filter element and the surrounding environment or another filter module 300, thereby reducing the probability of clogging of the filter module 300, and during backwashing, it is also helpful to flush impurities from the filter element 320.

[0044] In one embodiment, the filter element 320 is in a cone shape, which makes it easier for impurities to slide off the surface of the filter element, thereby reducing the probability of impurities clogging the filter element 320.

[0045] Furthermore, the outer side surface of the filter element 320 is set in a conical surface. The design of the conical surface is conducive to the uniform distribution and smooth flow of the fluid, reduces the eddy current and turbulence of the fluid inside the filter module 300, and reduces energy loss. Specifically, the generatrix of the conical surface is a straight line, the generatrix of the conical surface can also be a concave arc line that is concave toward the inside of the water cavity 340, and the generatrix of the conical surface can also be a convex arc line that protrudes toward the outside of the water cavity 340.

[0046] In the second embodiment, the outer side surface of the filter element 320 is a pyramidal surface; the cross section of the pyramidal surface is a polygon, so that the filtering area of ​​the filter element 320 can be increased.

[0047] Furthermore, at least one of the inner ring edge and the outer ring edge of the filter element 320 is provided with a first water outlet 330 . Such a first water outlet 330 is simple in shape and convenient for manufacturing.

[0048] In this embodiment, the first water outlet 330 is provided on both the inner ring edge and the outer ring edge. Of course, the present invention is not limited to this. In other embodiments, the first water outlet 330 can also be provided on only one ring edge according to the actual application environment.

[0049] It should be noted that in the present application, the axial direction refers to 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, and the axial direction is equivalent to the vertical direction from the apex of the conical surface to the bottom surface.

[0050] Reference Figure 5 and Figure 8 Furthermore, the cone angle of the filter element 320 is in the range of 150° to 170°. The cone angle in this range can provide a larger water flow space between the filter module 300 and the environmental component, so that the flow area of ​​the second water port 350 can be increased while reducing the axial space of the filter bottle occupied by the filter element 320. Moreover, when the filter assembly 30 of the pre-filter is formed by a plurality of filter modules 300, the cone angle in this range can provide a larger water flow space between two adjacent filter modules 300 or between the filter module 300 and the environmental component, and can also ensure the filtration area of ​​the filter element 320, thereby improving the filtration efficiency of the filter assembly 30.

[0051] The cone angle of the filter element is denoted as α, specifically, 150°≤α≤170°.

[0052] In this embodiment, the cone angle of the filter element is 160°.

[0053] Optionally, the plurality of support frames 310 are connected in a detachable manner, because the detachable manner can facilitate disassembly and installation, facilitate subsequent cleaning and maintenance, and reduce maintenance costs.

[0054] Reference Figure 6Furthermore, multiple support frames 310 are snap-fitted to enclose and form a water chamber 340. This is because the snap-fitting method does not require additional locking accessories, such as screws, nuts, etc., during assembly, thereby reducing manufacturing costs and assembly costs. Moreover, since the snap-fitting design is flexible, it can be customized according to the actual needs of the support frame 310, reducing material waste and improving material utilization. Secondly, the snap-fitting can achieve rapid assembly and disassembly without the need for complex tools and equipment. This greatly improves production efficiency and assembly efficiency, and also facilitates the maintenance and replacement of the filter module 300. Furthermore, the operation process of the snap-fitting is simple and clear, and easy to master. Whether it is a worker on the production line or an ordinary consumer, the assembly and disassembly work can be easily completed. Of course, the present application is not limited to this. In some other embodiments, multiple support frames 310 can also be connected by screws.

[0055] Furthermore, the plurality of support frames 310 are sequentially distributed along the axial direction or circumferential direction of the filter element 320 , which can facilitate installation by the user and reduce the number of steps for the user to identify the installation direction of the support frames 310 , thereby improving installation efficiency.

[0056] In this embodiment, the multiple support skeletons 310 include two support skeletons 310 distributed and connected along the axial direction, and the water passage chamber 340 is formed between the two support skeletons 310. At least one of the two support skeletons 310 is provided with the first water passage 330, and at least one of the two support skeletons 310 is provided with the second water passage 350. It can be understood that the filter module 300 is configured into two support skeletons 310 distributed along the axial direction, and covered with each other to form a water passage chamber 340 between the two support skeletons 310 brackets. By connecting the two support skeletons 310, the filter module 300 can be enclosed and formed, which can reduce the production efficiency of the filter module 300.

[0057] In the second embodiment, the plurality of support frames 310 include a plurality of side frames distributed along the circumferential direction, the side frames are provided with a through groove and an arc groove segment circumferentially arranged around the outer wall of the through groove, the plurality of side frames are connected so that the plurality of through grooves are covered to form a second water outlet 350, the plurality of arc groove segments are surrounded to form a water passage cavity 340 and a second water outlet 350, and the filter element 320 covers the arc groove segment to cover the second water outlet 350.

[0058] Reference Figure 4Furthermore, the support skeleton 310 includes a first ring portion 312, a second ring portion 313 and an oblique support portion 311 connecting the first ring portion 312 and the second ring portion 313, the second water outlet 350 is formed on the oblique support portion 311, and the two support skeletons 310 are connected through the first ring portion 312 and / or the second ring portion (313). It can be understood that the oblique support portion 311 can support the filter element 320, thereby making the installation of the filter element 320 more stable.

[0059] 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 oblique support portion 311 , and a first ring portion 312 and a second ring portion 313 disposed at opposite ends of the oblique support portion 311 .

[0060] Optionally, the oblique support portion 311 is formed with a plurality of second water outlets 350 spaced apart along the circumferential direction, and the filter element 320 is arranged to cover the oblique support portion 311. It can be understood that the arrangement of a plurality of second water outlets 350 can increase the amount of water passing through the filter module 300, thereby improving the filtering efficiency. Moreover, the arrangement of an annular filter element 320, which is directly covered on the oblique support portion 311, can increase the stability of the installation of the filter element 320, and compared with the scheme of arranging a filter element 320 for one second water outlet 350, this can reduce the installation process. Of course, the present application is not limited to this. In other embodiments, the filter module 300 can also be provided with a filter element corresponding to one second water outlet 350.

[0061] Furthermore, 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 the filter module 300 is provided with a filter element 320 corresponding to each support frame 310, and the annular filter element 320 directly covers the inclined support portion 311, which can facilitate the installation of the filter element 320 and the support frame 310.

[0062] During installation, the filter element 320 can be first covered on the inclined support portion 311 so that the filter element 320 and the support frame 310 are integrated, and then the two support frames 310 are connected to form a filter module 300. Of course, the two support frames 310 can also be connected to form an integral support frame 310, and then the filter element 320 can be installed on the inclined support portion 311 of the support frame 310.

[0063] Optionally, the oblique support portion 311 includes a plurality of support ribs spaced apart along the circumferential direction, a second water outlet 350 is formed between every two adjacent support ribs, and the first water outlet 330 is arranged on the inner circumference of the first ring portion 312. Such a support skeleton 310 is simple to form, and the support ribs can increase the strength of the oblique support portion 311, reducing the probability of the oblique support portion 311 breaking when the water flow is too large. Of course, the present invention is not limited to this, and in other embodiments, the oblique support portion 311 can also be configured as a conical plate, and a plurality of second water outlets 350 are formed on the conical plate.

[0064] The two ends of the support rib are respectively connected to the first ring portion 312 and the second ring portion 313 , and the inner periphery of the first ring portion 312 of the support frame 310 is provided with a first water outlet 330 .

[0065] Furthermore, the two support frames 310 are connected by two second rings 313, and the outer diameter of the second ring 313 is larger than the outer diameter of the first ring 312, so that the support frame 310 can be easily installed to avoid the connection structure affecting the flow of water in the water chamber 340, and the second ring 313 is located at the periphery of the filter module 300. The two second rings 313 are used to connect the two oblique support parts 311, which can improve the choice of connection methods, such as bonding or welding. When the two oblique support parts 311 are connected by the first ring 312, if the connection is made by bonding or welding, it is necessary to open a connecting port on the second ring 313, which not only affects the area of ​​the connection surface and the stability of the connection, but also increases the processing technology, thereby reducing production efficiency. Of course, the present invention is not limited to this. In other embodiments, the two oblique support parts 311 can also be connected by the first ring 312.

[0066] Optionally, the two second ring portions 313 are detachably connected. Since the detachable connection method can be quickly installed and disassembled, when a certain support frame 310 needs to be repaired or replaced, the problem can be quickly located and solved, avoiding unnecessary overall replacement, thereby reducing maintenance costs.

[0067] Furthermore, in some possible connection modes, the two second ring portions 313 are snap-fitted. It can be understood that the second ring portion 313 is made of plastic material, and the snap-fit ​​structure can be directly formed on the second ring portion 313, and no additional locking accessories, such as screws, nuts, etc., are required during assembly, thereby reducing manufacturing costs and assembly costs. Moreover, since the snap-fit ​​structure is flexible in design, it can be customized according to the actual needs of the second ring portion 313, reducing material waste and improving material utilization. Secondly, snap-fitting can achieve rapid assembly and disassembly without the need for complex tools and equipment. This greatly improves production efficiency and assembly efficiency, and also facilitates the maintenance and replacement of the filter module 300. Furthermore, the operation process of snap-fitting is simple and clear, and easy to master. Whether it is a worker on the production line or an ordinary consumer, assembly and disassembly can be easily completed.

[0068] In some connection modes, the two second ring portions 313 are threadedly connected, and the threaded connection, through the tight meshing of the threads, makes the second ring portion 313 have high tensile and compressive strength, which can meet the use requirements under various working conditions. Moreover, after the threaded connection is assembled, the connection part is not easy to loosen, and a stable connection state can be maintained to ensure the normal operation of the filter module 300. Secondly, the structure of the threaded connection is relatively simple, easy to process and assemble, and reduces the manufacturing and maintenance costs. The connection or disassembly can be achieved by rotating the support frame 310, without the need for complex tools and equipment, thereby improving work efficiency.

[0069] Reference Figure 5 , Figure 7 and Fig. 9 In some connection methods, multiple support skeletons 310 are bonded together; the bonding process is relatively simple, does not require complex equipment and tools, and is easy and quick to operate. This allows bonding to quickly and efficiently complete the task of connecting the two second connection parts. Since the equipment and material costs required for the bonding process are relatively low, the overall cost is also relatively economical. This is conducive to reducing production costs and improving economic benefits. Secondly, bonding has good sealing properties. The use of bonding can improve the sealing properties of the two second ring parts 313 and can effectively prevent water penetration.

[0070] In some connection methods, multiple support frames 310 are welded together; the welding connection method forms a larger contact area on the connection surface, so it has better firmness and shock resistance. The welded connection will not loosen due to heavy loads, vibrations or temperature changes, thereby effectively enhancing the structural strength and stability of the workpiece. Moreover, during the welding process, the molten metal will fill the gaps and tiny pores in the connection parts to form a continuous metal connection. This connection can effectively prevent the penetration of water flow and ensure the normal operation of the filter module 300.

[0071] Among them, the welding method can be ultrasonic welding, hot plate welding and other welding methods.

[0072] Furthermore, the support frame 310 is provided with a connection surface, and the connection surface is arranged in a stepped surface or a plane, and a plurality of the support frames 310 are bonded or welded via the stepped surface or the plane.

[0073] Among them, when the connecting surface is set as a stepped surface, the two stepped surfaces of the two matching support frames 310 match each other. For example, one support frame 310 has a concave stepped surface on one side close to the water passage cavity 340, and the other support frame 310 has a convex stepped surface on one side close to the water passage cavity 340. In this way, the connection area of ​​the bonding or welding of the two support frames 310 can be increased, thereby increasing the connection stability of the two support frames 310.

[0074] When the connecting surface is flat, any two support frames 310 can be exactly the same. During the manufacturing process, only one component needs to be produced, which reduces the number of mold changes and production line adjustments, improves manufacturing efficiency, and during maintenance or replacement, there is no need to distinguish the specific location. Any damaged support frame 310 can be replaced by an identical new support frame 310, simplifying the maintenance process.

[0075] Furthermore, the support frame 310 is integrally formed; this is because the integral forming process integrates multiple processes into one operation, thereby greatly shortening the production cycle of the filter module. Moreover, the integral forming process reduces the number of parts and avoids the steps of processing and assembling multiple parts in traditional processing, thereby reducing the production cost of the filter module 300. Secondly, during the integral forming process, the material is heated and cooled, which helps to improve its hardness and strength, thereby improving the service life and quality of the filter module 300.

[0076] The present invention also proposes a filter assembly, which includes multiple filter modules. The specific structure of the filter module refers to the above-mentioned embodiment. Since this filter assembly adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0077] The present invention also proposes a pre-filter, which includes a filter assembly. The specific structure of the filter assembly refers to the above-mentioned embodiment. Since the pre-filter adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0078] The present invention also proposes a water system, which includes a pre-filter. The specific structure of the pre-filter refers to the above embodiment. Since the water system adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the water system at least includes related components from the pre-filter to the water end. For example, the water system can include household appliances such as water heaters, dishwashers, and water dispensers, and can also include accessories such as water pipes for domestic water in the whole house.

[0079] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A filter module, applied to a pre-filter, characterized in that: The filtering module comprises: A plurality of support frames, wherein the plurality of support frames enclose a water passage cavity, and form a first water passage port and a second water passage port connected to the water passage cavity, wherein in the filtering flow path of the pre-filter, the second water passage port, the water passage cavity and the first water passage port are sequentially distributed along the upstream and downstream; and A filter element is disposed on the support frame and is arranged corresponding to the second water outlet, and the filter element is at least partially inclined.

2. The filter module according to claim 1, characterized in that: The plurality of support frames are sequentially distributed along the axial direction or circumferential direction of the first water outlet.

3. The filter module according to claim 1, characterized in that: The multiple support frames include 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.

4. The filter module according to claim 3, characterized in that: The support frame includes a first ring portion, a second ring portion and an oblique support portion connecting the first ring portion and the second ring portion, the second water outlet is formed on the oblique support portion, and the two support frames are connected through the first ring portion and / or the second ring portion.

5. The filter module according to claim 4, characterized in that: The two second ring parts are detachably connected.

6. The filter module according to claim 4, characterized in that: The two second ring parts are threadedly connected.

7. The filter module according to claim 4, characterized in that: The oblique support portion includes a plurality of support ribs spaced apart along the circumferential direction, and a second water outlet is formed between every two adjacent support ribs.

8. The filter module according to claim 3, characterized in that: The supporting frame is integrally formed.

9. The filter module according to claim 1, characterized in that: The plurality of support frames are bonded or welded together.

10. The filter module according to claim 9, characterized in that: The support frame is provided with a connection surface, and the connection surface is arranged in a stepped surface or a flat surface, and a plurality of the support frames are bonded or welded via the stepped surface or the flat surface.

11. The filter module according to claim 1, characterized in that: The filter element is arranged in an annular shape and has an inner annular edge and an outer annular edge, and the outer annular edge is located on one axial side of the inner annular edge.

12. The filter module according to claim 1, characterized in that: The filter element is arranged in the form of an annular pyramid surface or an annular conical surface.

13. The filter module according to claim 12, characterized in that: The filter element is in the form of an annular conical surface, and the annular conical surface is arranged in a straight line or a concave arc.

14. The filter module according to claim 12, characterized in that: The cone angle of the filter element is in the range of 150°≤α≤170°.

15. A filter assembly, characterized in that: It comprises a plurality of filter modules according to any one of claims 1 to 14, and two adjacent filter modules are connected through the first water outlet.

16. A pre-filter, characterized in that: The pre-filter comprises the filter assembly according to claim 15 .

17. A water system, characterized in that: Comprising the pre-filter as claimed in claim 16.

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