Filter element assembly and filtering device thereof

Abstract

The present invention discloses a filter element assembly and a filtering device thereof, belonging to the technical field of purifiers, comprising: a plurality of first cavities, the plurality of first cavities are arranged along the circumferential direction, the circumference of each first cavity is formed by enclosing a UF ultrafiltration membrane, each first cavity has a first inlet and a first outlet, and the first inlet of each first cavity is arranged adjacent to the first outlet of another first cavity. The present invention performs pre-filtration through a UF ultrafiltration membrane, and the filter element assembly adopts a circuitous flow channel in a cylindrical space, with a reasonable and compact structure, and increases the length of the UF ultrafiltration membrane. Under the condition of unchanged water volume, the flow rate is increased several times, the flow rate is greater, and the flushing is more thorough, which effectively prolongs the life of the UF ultrafiltration membrane and RO.

Description

Technical Field

[0001] The present invention relates to the technical field of purifiers, and in particular to a filter element assembly and a filtering device thereof. Background Art

[0002] The traditional purification system is mainly composed of PP cotton, carbon rods, UF ultrafiltration membrane, RO membrane and post-carbon. PP cotton can filter general large particles, carbon rods can absorb odors and residual chlorine and other substances, UF ultrafiltration membrane purification is used for users' water purification taps, and the surface flushing water of UF ultrafiltration membrane is used as the raw water of RO membrane. The replacement cycle of PP cotton in this system is 3 months, the replacement cycle of carbon rods is 6 months, the replacement cycle of UF ultrafiltration membrane is 1 year, and the replacement cycle of RO membrane is 2 years. The UF ultrafiltration membrane filaments in this system are not effectively rinsed, so the UF ultrafiltration membrane generally needs to be replaced within 1 year of use, and the RO membrane raw water is only filtered through the primary filtration of PP cotton and carbon rods, and the water quality has not been significantly improved, especially in areas with poor water quality. Therefore, the RO membrane in many areas needs to be replaced within 2 years, resulting in poor filtering and purification effect of the overall purification system and a short service life. Summary of the invention

[0003] In view of the above-mentioned problems of poor filtration and purification effect and short service life of existing purification devices, the present invention aims to provide a filter element assembly and a filtering device thereof, which performs pre-filtration through a UF ultrafiltration membrane, and the filter element assembly adopts a circuitous flow channel in a cylindrical space, has a reasonable and compact structure, increases the length of the UF ultrafiltration membrane, and increases the flow rate several times when the water volume remains unchanged, with a larger flow rate and more thorough flushing, which effectively prolongs the life of the UF ultrafiltration membrane and RO.

[0004] The specific technical solutions are as follows:

[0005] A filter element assembly comprises: a plurality of first cavities, wherein the plurality of first cavities are arranged along a circumferential direction, the circumference of each first cavity is formed by enclosing a UF ultrafiltration membrane, each first cavity has a first inlet and a first outlet, and the first inlet of each first cavity is arranged adjacent to the first outlet of another first cavity.

[0006] In the above-mentioned filter element assembly, a plurality of the first cavities are connected in sequence to form a circuitous channel.

[0007] The filter element assembly mentioned above, wherein, comprises: a separator, the outer circumference of the separator has a plurality of the first cavities, and the plurality of the first cavities are respectively arranged along the circumferential direction of the separator.

[0008] The above-mentioned filter element assembly, wherein the length of each of the UF ultrafiltration membranes is greater than or equal to the length of the separator.

[0009] The above-mentioned filter element assembly, among others, further includes: a first end cover and a second end cover, wherein the first end cover and the second end cover are respectively arranged at the two ends of the separator, the first end cover has a plurality of second cavities, the second end cover has a plurality of third cavities, a first inlet and a first outlet of two adjacent first cavities are respectively connected to the same second cavity or the same third cavity, and a plurality of the first cavities, a plurality of the second cavities and a plurality of the third cavities are connected to form a first filtering channel.

[0010] In the above-mentioned filter element assembly, the first end cover is provided with a second inlet and a second outlet, and the second inlet and the second outlet are respectively connected to the two second cavities.

[0011] In the above-mentioned filter element assembly, a carbon rod is provided inside the separator.

[0012] The filter element assembly described above, wherein the separator comprises:

[0013] A partition ring and a plurality of partition plates, wherein the carbon rod is arranged inside the partition ring, and the plurality of partition plates are arranged on the outer periphery of the partition ring, and the first cavity formed by the UF ultrafiltration membrane is arranged between two adjacent partition plates and the outer wall of the partition ring;

[0014] A first mounting ring, wherein the first mounting ring is connected to the upper ends of the outer sides of the plurality of partitions, the first end cover is sealingly connected to the upper end of the partition ring, the upper ends of some of the partitions, and the first mounting ring, and the upper ends of the plurality of UF ultrafiltration membranes are sealingly matched with the first mounting ring;

[0015] The second mounting ring is connected to the lower ends of the outer sides of the plurality of partitions, the second end cover is sealingly connected to the lower end of the partition ring, the lower ends of some of the partitions, and the second mounting ring, and the lower ends of the plurality of UF ultrafiltration membranes are sealingly matched with the second mounting ring.

[0016] The filter element assembly described above, wherein a plurality of first baffles are provided in the first end cover, the second cavity is formed between two adjacent first baffles, and the plurality of first baffles are respectively sealed and connected to the upper ends of some of the partitions;

[0017] A plurality of second baffles are arranged in the second end cover, the third cavity is formed between two adjacent second baffles, the plurality of second baffles are respectively sealed and connected to the lower ends of some of the partitions, and the number of the plurality of first baffles is greater than the number of the plurality of second baffles.

[0018] A filtering device, comprising the filter element assembly described in any one of the above, and further comprising: a housing, the filter element assembly is arranged in the housing, a second filtering channel is formed between the outer side of the filter element assembly and the inner wall of the housing, the housing has a third inlet, a third outlet and a backwashing port, the third inlet and the backwashing port are respectively connected to the first filtering channel, the first filtering channel is connected to the second filtering channel through a plurality of UF ultrafiltration membranes, and the third outlet is connected to the second filtering channel.

[0019] The above-mentioned filtering device, wherein the shell also has a fourth inlet and a fourth outlet, a fourth cavity is formed between the outer periphery of the carbon rod and the inner wall of the separator, a fifth cavity is formed in the carbon rod, the fourth cavity is connected to the fifth cavity through the carbon rod, the fourth inlet is connected to the fourth cavity, and the fifth cavity is connected to the fourth outlet.

[0020] The above-mentioned filtering device, wherein a removable first cover is provided at the bottom of the shell, the first cover is sealed with the bottom of the separator, and a receiving space for placing the carbon rod is formed between the top of the shell, the interior of the separator and the first cover.

[0021] In the above-mentioned filtering device, the third inlet, the third outlet, the backwash port, the fourth inlet and the fourth outlet are respectively arranged on the top of the shell.

[0022] The above-mentioned filtering device, wherein the shell includes: a bottle body and a second cover body, the second cover body is detachably connected to the bottom of the bottle body, the filter element assembly is arranged in the bottle body, the first cover body is arranged on the second cover body, and the third inlet, the third outlet, the backwash port, the fourth inlet and the fourth outlet are respectively arranged at the top of the bottle body.

[0023] In the above-mentioned filtering device, a first support cover and a second support cover are also provided in the bottle body, and the first support cover and the second support cover are both provided in the accommodating space, and the upper and lower ends of the carbon rod are respectively detachably connected to the first support cover and the second support cover, the first support cover is detachably connected to the bottle body, and the second support cover is detachably connected to the first cover body.

[0024] The above-mentioned filtering device, wherein a first baffle ring and a second baffle ring are provided at the top of the bottle body, the second baffle ring is located between the first baffle ring and the inner wall of the bottle body, a sixth cavity is formed inside the first baffle ring, and a seventh cavity is formed between the first baffle ring and the second baffle ring;

[0025] An eighth cavity is formed between the inner wall of the top of the bottle body and the second retaining ring, the third outlet is connected to the eighth cavity, the fourth inlet is connected to the seventh cavity, and the fourth outlet is connected to the sixth cavity;

[0026] The sixth cavity is communicated with the fifth cavity, the seventh cavity is communicated with the fourth cavity, and the eighth cavity is communicated with the second filter channel.

[0027] The above-mentioned filtering device, wherein the first end cover is provided with two first connecting tubes, the second inlet and the second outlet are respectively formed in the two first connecting tubes, the top of the bottle body is provided with two second connecting tubes, the third inlet and the backwash port are respectively formed in the two second connecting tubes, and the two first connecting tubes are respectively sealed and connected to the two second connecting tubes.

[0028] Compared with the prior art, the above technical solution has the following positive effects:

[0029] (1) The present invention uses a UF ultrafiltration membrane as a pre-position, which reduces the number of filtration stages without reducing the filtration effect, and can reduce the volume of the entire machine. The UF ultrafiltration membrane is an internal pressure hollow fiber membrane, which is easy to rinse and has a large water flow rate. It is also made into a modular filter element, which is convenient for users to replace by themselves. This is different from the inconvenience of requiring professional personnel to come to the door to replace the ultrafiltration membrane in the past, and meets the needs of more consumers. The life of the UF ultrafiltration membrane can reach 20 tons of water, which is particularly suitable for the use of RO machines in areas with high water pollution;

[0030] (2) The present invention can reduce the number of times users have to replace the core, from replacing PP cotton every 3 months, carbon rods every 6 months, UF ultrafiltration membranes every 1 year, and RO membranes every 2 years to replacing them every 2 years, without affecting the water quality standard;

[0031] (3) The present invention transforms the original purification chamber into several UF ultrafiltration membrane purification chambers, increases the length of the UF ultrafiltration membrane, increases the surface flow rate of the UF ultrafiltration membrane under the condition of unchanged water volume, increases the flushing intensity, reduces the flushing water by at least 75% compared with the traditional flushing method, and effectively prolongs the life of the UF ultrafiltration membrane and RO;

[0032] (4) The present invention uses the UF ultrafiltration membrane and activated carbon to share a filter element housing, with the UF ultrafiltration membrane as the front filter and the activated carbon as the back filter. However, the carbon rod can be replaced independently, which reduces the number of filter element stages and the number of times the filter element is replaced for the entire machine. The service life of the front and rear filter elements can reach more than 20 tons of water. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of a filter element assembly and a filter element assembly of a filtering device thereof according to the present invention;

[0034] Figure 2It is a structural schematic diagram of a filter element assembly and a separator of a filter device thereof according to the present invention;

[0035] Figure 3 It is a structural schematic diagram of a filter element assembly and a separator of a filter device thereof according to the present invention;

[0036] Figure 4 It is a structural schematic diagram of a filter element assembly and a first end cover of a filter device thereof according to the present invention;

[0037] Figure 5 It is a structural schematic diagram of a filter element assembly and a second end cover of a filter device thereof according to the present invention;

[0038] Figure 6 It is a schematic diagram of the overall structure of a filter element assembly and a filtering device thereof of the present invention;

[0039] Figure 7 This is a cross-sectional view of the overall structure of a filter element assembly and a filter device thereof according to the present invention;

[0040] Figure 8 This is a cross-sectional view of the overall structure of a filter element assembly and a filter device thereof according to the present invention;

[0041] Fig. 9 This is a cross-sectional view of the overall structure of a filter element assembly and a filter device thereof according to the present invention;

[0042] In the attached drawings: 1, separator; 2, first end cap; 3, second end cap; 4, spacer ring; 5, spacer; 6, carbon rod; 7, first mounting ring; 8, second mounting ring; 9, first baffle; 10, second baffle; 11, first cavity; 12, second cavity; 13, third cavity; 14, fourth cavity; 15, fifth cavity; 16, sixth cavity; 17, seventh cavity; 18, eighth cavity; 19, slot; 21, second inlet; 22, second outlet; 23, third inlet; 24, third outlet; 25, backwash port; 26, fourth inlet; 27, fourth outlet; 31, first purification cavity; 32, second purification cavity; 33, third purification cavity chemical chamber; 34, the fourth purification chamber; 35, the first upper connecting chamber; 36, the second upper connecting chamber; 37, the third upper connecting chamber; 38, the first lower connecting chamber; 39, the second lower connecting chamber; 41, the shell; 42, the second filter channel; 43, the first cover body; 44, the bottle body; 45, the second cover body; 46, the first support cover; 47, the second support cover; 48, the first retaining ring; 49, the second retaining ring; 50, the support block; 51, the first connecting pipe; 52, the second connecting pipe. DETAILED DESCRIPTION

[0043] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0044] 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, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. 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.

[0045] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0046] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values.

[0047] Figure 1 FIG. 2 is a schematic diagram of the structure of a filter element assembly and a filter element assembly of a filter device of the present invention, and FIG. 3 is a schematic diagram of the structure of a separator of a filter element assembly and a filter device of the present invention, Figure 3 This is a schematic structural diagram of a filter element assembly and a separator of a filter device thereof according to the present invention. Figure 4 This is a schematic structural diagram of a filter element assembly and a first end cover of a filter device thereof according to the present invention. Figure 5 FIG. 1 is a schematic structural diagram of a filter element assembly and a second end cover of a filter device thereof according to the present invention. Figures 1 to 5 As shown, a filter element assembly of a preferred embodiment is shown, including: a plurality of first cavities 11, the plurality of first cavities 11 are arranged along the circumferential direction, the circumferential side of each first cavity 11 is formed by enclosing a UF ultrafiltration membrane, each first cavity 11 has a first inlet and a first outlet, and the first inlet of each first cavity 11 is arranged adjacent to the first outlet of another first cavity 11.

[0048] Furthermore, as a preferred embodiment, a plurality of first cavities 11 are connected in sequence to form a circuitous passage.

[0049] Further, as a preferred embodiment, the filter element assembly includes: a separator 1 , the outer circumference of the separator 1 has a plurality of first cavities 11 , and the plurality of first cavities 11 are respectively arranged along the circumferential direction of the separator 1 .

[0050] Further, as a preferred embodiment, the length of each UF ultrafiltration membrane is greater than or equal to the length of the separator 1 .

[0051] Furthermore, as a preferred embodiment, the filter element assembly also includes: a first end cover 2 and a second end cover 3, the first end cover 2 and the second end cover 3 are respectively arranged at the two ends of the separator 1, the first end cover 2 has a plurality of second cavities 12, the second end cover 3 has a plurality of third cavities 13, a first inlet and a first outlet of two adjacent first cavities 11 are respectively connected to the same second cavity 12 or the same third cavity 13, and the plurality of first cavities 11, the plurality of second cavities 12 and the plurality of third cavities 13 are connected to form a first filter channel.

[0052] Further, as a preferred embodiment, the first end cover 2 is provided with a second inlet 21 and a second outlet 22 , and the second inlet 21 and the second outlet 22 are respectively connected to the two second cavities 12 .

[0053] Furthermore, as a preferred embodiment, carbon rods are provided inside the separator 1 .

[0054] Further, as a preferred embodiment, the separator 1 includes: a partition ring 4 and a plurality of partition plates 5, a carbon rod 6 is provided inside the partition ring 4, and the plurality of partition plates 5 are respectively provided on the outer periphery of the partition ring 4, and a first cavity 11 formed by enclosing a UF ultrafiltration membrane is provided between two adjacent partition plates 5 and the outer wall of the partition ring 4.

[0055] Furthermore, as a preferred embodiment, the separator 1 also includes: a first mounting ring 7, the first mounting ring 7 is connected to the upper ends of the outer sides of several partitions 5, the first end cover 2 is sealingly connected to the upper end of the partition ring 4, the upper end of part of the partition 5, and the first mounting ring 7, and the upper ends of several UF ultrafiltration membranes are sealingly matched with the first mounting ring 7.

[0056] Further, as a preferred embodiment, the separator 1 includes: a second mounting ring 8, the second mounting ring 8 is connected to the lower end of the outer side of several partitions 5, the second end cover 3 is sealedly connected to the lower end of the partition ring 4, the lower end of part of the partition 5, and the second mounting ring 8, and the lower ends of several UF ultrafiltration membranes are sealed with the second mounting ring 8.

[0057] Furthermore, as a preferred embodiment, a plurality of first baffles 9 are disposed in the first end cover 2 , a second cavity 12 is formed between two adjacent first baffles 9 , and the plurality of first baffles 9 are respectively sealed and connected to the upper ends of some of the partitions 5 .

[0058] Preferably, the sealed fit and sealed connection can be achieved by providing a sealing ring or sealant between the two components, or other structures that can achieve a sealing effect.

[0059] Furthermore, as a preferred embodiment, a plurality of second baffles 10 are provided in the second end cover 3, a third cavity 13 is formed between two adjacent second baffles 10, the plurality of second baffles 10 are respectively sealed and connected to the lower ends of some partitions 5, and the number of the plurality of first baffles 9 is greater than the number of the plurality of second baffles 10.

[0060] Preferably, the first end cover 2 and the second end cover 3 are respectively detachably plugged into and fitted with the upper and lower ends of the separator 1 .

[0061] Preferably, the plurality of first cavities 11 are arranged at equal intervals along the circumferential direction of the separator 1 .

[0062] Preferably, the outlet of the previous first cavity 11 is connected to the inlet of the next first cavity 11, the inlet of the previous first cavity 11 and the inlet of the next first cavity 11 are offset up and down, the outlet of the previous first cavity 11 and the outlet of the next first cavity 11 are offset up and down, and the outlet of the previous first cavity 11 and the inlet of the next first cavity 11 are adjacent to each other.

[0063] Preferably, the filter element assembly includes four first cavities 11, which are arranged at equal intervals along the outer circumference of the separator 1. Each first cavity 11 is surrounded by a UF ultrafiltration membrane. Raw water enters the first cavity 11, is purified by the UF ultrafiltration membrane, and is discharged from the peripheral side of the separator 1.

[0064] Preferably, each first cavity 11 is a purification cavity, and the four first cavities 11 respectively include: a first purification cavity 31, a second purification cavity 32, a third purification cavity 33, and a fourth purification cavity 34. The four purification cavity are arranged in sequence along the circumferential direction of the separator 1. The upper end of the first purification cavity 31 is its first inlet, and the first outlet of the lower end of the first purification cavity 31 is connected to the first inlet of the lower end of the second purification cavity 32. The first outlet of the upper end of the second purification cavity 32 is connected to the first inlet of the upper end of the third purification cavity 33. The first outlet of the lower end of the third purification cavity 33 is connected to the first inlet of the lower end of the fourth purification cavity 34. The upper end of the fourth purification cavity 34 is its first outlet.

[0065] Preferably, both upper and lower ends of the spacer ring 4 are provided with slots 19, the upper ends of some partitions 4 are provided with slots 19, and the lower ends of some partitions 4 are provided with slots 19, and the number of slots 19 at the upper end of the partition 4 is greater than the number of slots 19 at the lower end of the partition 4.

[0066] Preferably, a plurality of first baffles 9 are respectively engaged with the slots at the upper end of the partition 4 , and a plurality of second baffles 10 are respectively engaged with the slots at the lower end of the partition 4 .

[0067] Preferably, several second cavities 12 are upper connecting cavities, and three upper connecting cavities are formed in the first end cover 2, including a first upper connecting cavity 35, a second upper connecting cavity 36 and a third upper connecting cavity 37 respectively; several third cavities 13 are lower connecting cavities, and two lower connecting cavities are formed in the second end cover 3, including a first lower connecting cavity 38 and a second lower connecting cavity 39 respectively; the inlet of the filter element assembly, the first upper connecting cavity 35, the first purification cavity 31, the first lower connecting cavity 38, the second purification cavity 32, the second upper connecting cavity 36, the third purification cavity 33, the second lower connecting cavity 39, the fourth purification cavity 34, the third upper connecting cavity 37, and the outlet of the filter element assembly are connected in sequence to form a first filter channel.

[0068] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation and protection scope of the present invention.

[0069] The present invention also has the following implementation modes based on the above:

[0070] In a further embodiment of the present invention, Figure 6 This is a schematic diagram of the overall structure of a filter element assembly and a filtering device thereof according to the present invention. Figure 7 This is a cross-sectional view of the overall structure of a filter element assembly and a filter device thereof according to the present invention. Figure 8 This is a cross-sectional view of the overall structure of a filter element assembly and a filter device thereof according to the present invention. Fig. 9 This is a cross-sectional view of the overall structure of a filter element assembly and a filter device of the present invention. Please continue to refer to Figures 1 to 9 As shown, a filtering device of a preferred embodiment is shown, including any one of the filter element components mentioned above, and also includes: a shell 41, the filter element component is arranged in the shell 41, a second filter channel 42 is formed between the outer side of the filter element component and the inner wall of the shell 41, and the shell 41 has a third inlet 23, a third outlet 24 and a backwashing port 25, the third inlet 23 and the backwashing port 25 are respectively connected to the first filter channel, the first filter channel is connected to the second filter channel 42 through a plurality of UF ultrafiltration membranes, and the third outlet 24 is connected to the second filter channel 42.

[0071] In a further embodiment of the present invention, the shell 41 also has a fourth inlet 26 and a fourth outlet 27, a fourth cavity 14 is formed between the outer periphery of the carbon rod 6 and the inner wall of the separator 1, a fifth cavity 15 is formed in the carbon rod 6, the fourth cavity 14 is connected to the fifth cavity 15 through the carbon rod 6, the fourth inlet 26 is connected to the fourth cavity 14, and the fifth cavity 15 is connected to the fourth outlet 27.

[0072] In a further embodiment of the present invention, a removable first cover body 43 is provided at the bottom of the shell 41, and the first cover body 43 is sealed with the bottom of the separator 1, and an accommodating space for placing the carbon rod 6 is formed between the top of the shell 41, the interior of the separator 1 and the first cover body 43.

[0073] In a further embodiment of the present invention, the third inlet 23 , the third outlet 24 , the backwash port 25 , the fourth inlet 26 and the fourth outlet 27 are respectively disposed at the top of the housing 41 .

[0074] In a further embodiment of the present invention, the shell 41 includes: a bottle body 44 and a second cover body 45, the second cover body 45 is detachably connected to the bottom of the bottle body 44, the filter element assembly is arranged in the bottle body 44, the first cover body 43 is arranged on the second cover body 45, and the third inlet 23, the third outlet 24, the backwash port 25, the fourth inlet 26 and the fourth outlet 27 are respectively arranged at the top of the bottle body 44.

[0075] Preferably, the detachable connection structure of the first cover body 43 facilitates the replacement of the carbon rod.

[0076] Preferably, the first cover body 43 can be directly disassembled and assembled, or the first cover body 43 can be disassembled and assembled by disassembling and assembling the second cover body 45 .

[0077] Preferably, the third inlet 23, the third outlet 24, the backwash port 25, the fourth inlet 26 and the fourth outlet 27 are respectively arranged on one side of the top of the bottle body 44, and can be connected to the corresponding ports by setting a connecting pipe extending from the side wall of the bottle body 44. The structural layout is compact and reasonable, which is convenient for the installation of subsequent pipelines.

[0078] In a further embodiment of the present invention, a first support cover 46 and a second support cover 47 are further provided in the bottle body 44. The first support cover 46 and the second support cover 47 are both provided in the accommodating space. The upper and lower ends of the carbon rod 6 are respectively detachably connected to the first support cover 46 and the second support cover 47. The first support cover 46 is detachably connected to the bottle body 44, and the second support cover 47 is detachably connected to the first cover body 43.

[0079] In a further embodiment of the present invention, a first retaining ring 48 and a second retaining ring 49 are provided at the top of the bottle body 44, the second retaining ring 49 is located between the first retaining ring 48 and the inner wall of the bottle body 44, the interior of the first retaining ring 48 forms a sixth cavity 16, and a seventh cavity 17 is formed between the first retaining ring 48 and the second retaining ring 49.

[0080] In a further embodiment of the present invention, an eighth cavity 18 is formed between the inner wall of the top of the bottle body 44 and the second blocking ring 49 , the third outlet 24 is connected to the eighth cavity 18 , the fourth inlet 26 is connected to the seventh cavity 17 , and the fourth outlet 27 is connected to the sixth cavity 16 .

[0081] In a further embodiment of the present invention, the sixth cavity 16 is connected to the fifth cavity 15 , the seventh cavity 17 is connected to the fourth cavity 14 , and the eighth cavity 18 is connected to the second filter channel 42 .

[0082] In a further embodiment of the present invention, two first connecting tubes 51 are provided on the first end cover 2, and a second inlet 21 and a second outlet 22 are respectively formed in the two first connecting tubes 51. Two second connecting tubes 52 are provided on the top of the bottle body 44, and a third inlet 23 and a backwash port 25 are respectively formed in the two second connecting tubes 52. The two first connecting tubes 51 are sealed and connected to the two second connecting tubes 52 respectively.

[0083] Preferably, the sealing fit and sealing connection in the present invention can be connected and matched by means of sealing rings and sealants, and the detachable connection and detachable fit in the present invention can be connected by means of snap-on connection, plug-in connection, threaded connection, screw connection and the like.

[0084] Preferably, a plurality of support blocks 50 are provided on the first support cover 46 , and the support blocks 50 abut against the inner wall of the first end cover 2 , so as to form a passage between the first end cover 2 and the first support cover 46 .

[0085] Preferably, the third inlet 23, the first filter channel, and the backwash port 25 are connected in sequence to form a first flow route, and the backwash port 25 is connected in parallel with the wastewater port of the RO filter device.

[0086] Preferably, the third inlet 23, the first upper connecting chamber 35, the first purification chamber 31, the first lower connecting chamber 38, the second purification chamber 32, the second upper connecting chamber 36, the third purification chamber 33, the second lower connecting chamber 39, and the fourth purification chamber 34 are connected in sequence, and flow into the second filtration channel 42 from the side walls of the first purification chamber 31, the second purification chamber 32, the third purification chamber 33, and the fourth purification chamber 34 respectively (that is, discharged from the side walls of several UF ultrafiltration membranes), and then discharged through the eighth cavity 18 and the third outlet 24 in sequence to form a second flow route, and the third outlet 24 is connected to the inlet of the RO filter device, and the outlet of the RO filter device is connected to the fourth inlet 26.

[0087] Preferably, the fourth inlet 26, the seventh cavity 17, the fourth cavity 14, the carbon rod 6, the fifth cavity 15, the sixth cavity 16, and the fourth outlet 27 are connected in sequence.

[0088] The present invention can filter and purify water or other liquids.

[0089] The present invention places UF ultrafiltration membrane in the front position, reduces the number of filtration stages without reducing the filtration effect, and can reduce the volume of the entire machine. The UF ultrafiltration membrane is an internal pressure hollow fiber membrane, which is easy to rinse and has a large water flow rate. It is made into a modular filter element, which is convenient for users to replace by themselves. It is different from the inconvenience of requiring professionals to replace it on site in the past, and meets the needs of more consumers. The life of the UF ultrafiltration membrane can reach 20T of water, and it is particularly suitable for use in RO machines in areas with high water pollution.

[0090] The present invention can reduce the number of times users change the core, from replacing PP cotton every 3 months, carbon rods every 6 months, UF ultrafiltration membranes every 1 year, and RO membranes every 2 years to replacing them every 2 years, without affecting the water quality standard.

[0091] The present invention transforms the original purification chamber into several UF ultrafiltration membrane purification chambers, increases the length of the UF ultrafiltration membrane, increases the surface flow rate of the UF ultrafiltration membrane under the condition of unchanged water volume, increases the flushing intensity, reduces the flushing water by at least 75% compared with the traditional flushing method, and effectively prolongs the life of the UF ultrafiltration membrane and RO.

[0092] The present invention uses a UF ultrafiltration membrane and activated carbon to share a filter element housing, with the UF ultrafiltration membrane as the front and activated carbon as the rear, but the carbon rod 6 can be replaced independently, which reduces the number of filter element stages and the number of core replacements for the entire machine, and the service life of the front and rear filter elements can reach more than 20T of water.

[0093] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A filter element assembly, characterized in that: include: A plurality of first cavities are arranged along the circumferential direction, the circumference of each first cavity is formed by enclosing a UF ultrafiltration membrane, each first cavity has a first inlet and a first outlet, and the first inlet of each first cavity is arranged adjacent to the first outlet of another first cavity.

2. The filter element assembly according to claim 1, characterized in that: A plurality of the first cavities are connected in sequence to form a circuitous channel.

3. The filter element assembly according to claim 2, characterized in that: include: A separator, wherein the outer periphery of the separator has a plurality of the first cavities, and the plurality of the first cavities are respectively arranged along the circumferential direction of the separator.

4. The filter element assembly according to claim 3, characterized in that: The length of each of the UF ultrafiltration membranes is greater than or equal to the length of the separator.

5. The filter element assembly according to claim 4, characterized in that: Also includes: A first end cover and a second end cover, wherein the first end cover and the second end cover are respectively arranged at both ends of the separator, the first end cover has a plurality of second cavities, the second end cover has a plurality of third cavities, a first inlet and a first outlet of two adjacent first cavities are respectively connected to the same second cavity or the same third cavity, and a plurality of the first cavities, a plurality of the second cavities and a plurality of the third cavities are connected to form a first filtering channel.

6. The filter element assembly according to claim 5, characterized in that: The first end cover is provided with a second inlet and a second outlet, and the second inlet and the second outlet are respectively connected to the two second cavities.

7. The filter element assembly according to claim 6, characterized in that: A carbon rod is disposed inside the separator.

8. The filter element assembly according to claim 7, characterized in that: The separator comprises: A partition ring and a plurality of partition plates, wherein the carbon rod is arranged inside the partition ring, and the plurality of partition plates are arranged on the outer periphery of the partition ring, and the first cavity formed by the UF ultrafiltration membrane is arranged between two adjacent partition plates and the outer wall of the partition ring; A first mounting ring, wherein the first mounting ring is connected to the upper ends of the outer sides of the plurality of partitions, the first end cover is sealingly connected to the upper end of the partition ring, the upper ends of some of the partitions, and the first mounting ring, and the upper ends of the plurality of UF ultrafiltration membranes are sealingly matched with the first mounting ring; The second mounting ring is connected to the lower ends of the outer sides of the plurality of partitions, the second end cover is sealingly connected to the lower end of the partition ring, the lower ends of some of the partitions, and the second mounting ring, and the lower ends of the plurality of UF ultrafiltration membranes are sealingly matched with the second mounting ring.

9. The filter element assembly according to claim 8, characterized in that: A plurality of first baffles are provided in the first end cover, the second cavity is formed between two adjacent first baffles, and the plurality of first baffles are respectively sealed and connected to the upper ends of some of the partitions; A plurality of second baffles are arranged in the second end cover, the third cavity is formed between two adjacent second baffles, the plurality of second baffles are respectively sealed and connected to the lower ends of some of the partitions, and the number of the plurality of first baffles is greater than the number of the plurality of second baffles.

10. A filtering device, characterized in that: The filter element assembly comprises any one of claims 7 to 9, and further comprises: a housing, wherein the filter element assembly is arranged in the housing, a second filter channel is formed between the outer side of the filter element assembly and the inner wall of the housing, the housing has a third inlet, a third outlet and a backwashing port, the third inlet and the backwashing port are respectively connected to the first filter channel, the first filter channel is connected to the second filter channel through a plurality of UF ultrafiltration membranes, and the third outlet is connected to the second filter channel.

11. The filtering device according to claim 10, characterized in that: The shell also has a fourth inlet and a fourth outlet, a fourth cavity is formed between the outer periphery of the carbon rod and the inner wall of the separator, a fifth cavity is formed in the carbon rod, the fourth cavity is connected to the fifth cavity through the carbon rod, the fourth inlet is connected to the fourth cavity, and the fifth cavity is connected to the fourth outlet.

12. The filtering device according to claim 11, characterized in that: A detachable first cover is provided at the bottom of the shell, and the first cover is sealed with the bottom of the separator, and a receiving space for placing the carbon rod is formed between the top of the shell, the interior of the separator and the first cover.

13. The filtering device according to claim 12, characterized in that: The third inlet, the third outlet, the backwash port, the fourth inlet and the fourth outlet are respectively arranged at the top of the shell.

14. The filtering device according to claim 13, characterized in that: The shell includes: a bottle body and a second cover body, the second cover body is detachably connected to the bottom of the bottle body, the filter element assembly is arranged in the bottle body, the first cover body is arranged on the second cover body, and the third inlet, the third outlet, the backwash port, the fourth inlet and the fourth outlet are respectively arranged on the top of the bottle body.

15. The filtering device according to claim 14, characterized in that: The bottle body is also provided with a first support cover and a second support cover, both of which are arranged in the accommodating space, and the upper and lower ends of the carbon rod are detachably connected to the first support cover and the second support cover respectively, the first support cover is detachably connected to the bottle body, and the second support cover is detachably connected to the first cover body.

16. The filtering device according to claim 14, characterized in that: A first retaining ring and a second retaining ring are provided at the top of the bottle body, the second retaining ring is located between the first retaining ring and the inner wall of the bottle body, a sixth cavity is formed inside the first retaining ring, and a seventh cavity is formed between the first retaining ring and the second retaining ring; An eighth cavity is formed between the inner wall of the top of the bottle body and the second retaining ring, the third outlet is connected to the eighth cavity, the fourth inlet is connected to the seventh cavity, and the fourth outlet is connected to the sixth cavity; The sixth cavity is communicated with the fifth cavity, the seventh cavity is communicated with the fourth cavity, and the eighth cavity is communicated with the second filter channel.

17. The filtering device according to claim 14, characterized in that: Two first connecting tubes are provided on the first end cover, and the second inlet and the second outlet are formed in the two first connecting tubes respectively. Two second connecting tubes are provided on the top of the bottle body, and the third inlet and the backwash port are formed in the two second connecting tubes respectively. The two first connecting tubes are sealed and connected to the two second connecting tubes respectively.

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