Composite filter element and water purifier with same

Abstract

The utility model relates to a composite filter element and a water purifier with the composite filter element, and the composite filter element comprises a shell which is provided with a water inlet and a water outlet; the filtering assembly comprises at least two filtering materials which are sequentially sleeved inside and outside, a raw water channel is formed between the filtering material located at the most upstream and the shell, a flow channel is formed between every two adjacent filtering materials, and the raw water channel, all the filtering materials and all the flow channels jointly form a first water flow channel; the water purifier is characterized by further comprising a water distribution piece, the outer wall of the water distribution piece is provided with a water passing hole, the water distribution piece is restrained in the shell in the mode of rotating relative to the shell, and in the first state, the water passing hole is communicated with the raw water channel; the raw water channel can be directly communicated with at least one flow channel fluid through the water diversion piece, so that a second water flow channel intersected with the first water flow channel is formed; and in the second state, the water dividing piece is configured to be capable of blocking the raw water channel from any flow channel fluid so as to cut off the second water flow channel. The utility model has the advantages of improving the utilization rate of the composite filter element and reducing waste.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a composite filter element and a water purifier with the composite filter element. Background Art

[0002] Water purification products are becoming more and more popular. Existing water purification products generally include pre-filter cartridges, membrane filter cartridges and post-filter cartridges. The pre-filter cartridge mainly filters large particles in the water, such as sand, rust, colloids and other substances. When the water quality in the area is poor, a large amount of particulate impurities will quickly block the surface of the pre-filter cartridge, causing the water flow of the water purification product to decrease sharply. Users have to replace the filter cartridge, and even replace the filter cartridge multiple times at short intervals.

[0003] In order to solve the above technical problems, a Chinese utility model patent with patent number ZL201821645427.7 (authorization announcement number CN209396996U) discloses a water purifier that can automatically switch filter elements. The water purifier includes a water inlet control valve, a primary filter part, a booster pump, a fine filter component, and a water outlet component that are sequentially connected through pipelines; the primary filter part includes a first reversing valve, a main filter element, a spare filter element, and a second reversing valve. The water inlet end of the first reversing valve is connected to the water outlet end of the water inlet control valve, and the water outlet end of the first reversing valve can selectively connect to the water inlet ends of the main filter element and the spare filter element. The water inlet end of the second reversing valve can selectively connect to the water outlet ends of the main filter element and the spare filter element, and the water outlet end of the second reversing valve is connected to the water inlet end of the booster pump.

[0004] Although the above-mentioned water purifier can be provided with a spare filter element, the water path can be immediately switched to the spare filter element when the main filter element reaches the service life or is blocked, so as to extend the time for the user to replace the main filter element. However, since the filter element in the above-mentioned water purifier is a non-composite filter element, the internal space in the water purifier can be used to install a spare filter element and a new pipeline to solve the problem of filter element switching. However, in order to reduce the internal space of the water purifier, a composite filter element composed of a multi-stage filter element assembly integrated in a cylindrical shell has appeared in the prior art. For example, the Chinese utility model patent with patent number ZL202321426488.5 (authorization announcement number CN220116383U) discloses an integrated composite filter element. Since the internal space of the composite filter element is small and the composite filter element shares the same raw water channel, once the filter element located at the most upstream is seriously blocked, the subsequent filter element cannot be used, so the filter element needs to be replaced as a whole, which causes great waste. Utility Model Content

[0005] The first technical problem to be solved by the utility model is to provide a composite filter element which can improve the utilization rate and reduce the waste in view of the above-mentioned prior art.

[0006] The second technical problem to be solved by the utility model is to provide a water purifier having the above-mentioned composite filter element.

[0007] The technical solution adopted by the utility model to solve the above-mentioned first technical problem is: a composite filter element, comprising:

[0008] The shell is hollow inside and is provided with a water inlet and a water outlet;

[0009] A filter assembly is arranged inside the housing, the filter assembly includes at least two filter materials arranged inside and outside in sequence, along the flow path of the fluid, a raw water channel is formed between the filter material located most upstream and the housing, a flow channel is formed between two adjacent filter materials, the raw water channel, the filter holes on all the filter materials and all the flow channels together form a first water flow channel, the filter assembly is arranged to filter the raw water flowing into the raw water channel from the water inlet, and the clean water flowing out of the first water flow channel flows out of the housing through the water outlet;

[0010] The invention is characterized in that it also includes:

[0011] The water distribution member has a water hole on its outer wall that penetrates the wall thickness. The water distribution member is constrained in the shell in a manner that it can rotate relative to the shell, so that it has at least the following two states:

[0012] In the first state, the water hole is connected to the raw water channel, so that the water diversion element can directly connect the raw water channel with at least one flow channel fluid to form a second water flow channel intersecting with the first water flow channel;

[0013] In the second state, the water dividing element is configured to block the raw water channel from any flow channel fluid and isolate the second water flow channel.

[0014] In order to achieve stable installation of all filter materials, a second end cap for installing one end of all filter materials is further provided in the shell, and the second end cap is arranged away from the water inlet.

[0015] In order to achieve the cooperation between the water diversion piece and the second end cover, preferably, the top of the water diversion piece is provided with a first plug-in portion with a hollow interior and an opening facing upward, the second end cover extends in a direction away from the filter assembly to provide a second plug-in portion for the first plug-in portion to be plugged in, and the bottom of the second end cover closes the opening of the first plug-in portion, and the second end cover is provided with a first through hole located in the flow channel and connected to the interior of the first plug-in portion.

[0016] In order to improve the sealing between the water dividing member and the second end cover, a circumferentially arranged first groove is further provided on the outer wall of the first plug-in part, a first sealing ring is installed in the first groove, and the first sealing ring can be circumferentially sealed and connected to the inner wall of the second plug-in part.

[0017] In order to form the above-mentioned second water flow channel, the water hole is opened on the outer wall of the first plug-in part, and the second plug-in part is provided with a second through hole penetrating its wall thickness. When the water diversion part is in the first state, the water hole and the second through hole are arranged opposite to each other; when the water diversion part is in the second state, the outer wall of the second plug-in part blocks the water hole and the side wall of the first plug-in part blocks the second through hole. In this way, when the water outflow of the composite filter element is abnormal, the water diversion part can be switched to the first state by rotating the water diversion part, so that part of the filter element can be reused to improve the utilization rate.

[0018] In order to further improve the sealing between the water distribution piece and the second end cover, a second groove arranged around the outer circumference of the water hole is further provided on the outer wall of the first plug-in part, and a second sealing ring is installed in the second groove, and the second sealing ring can be sealed and connected to the inner wall of the second plug-in part.

[0019] Preferably, each filter material is a rolled membrane with a circular cross-section. Accordingly, the second end cover includes annular walls arranged in sequence inside and outside, each rolled membrane is respectively arranged between two corresponding adjacent annular walls, and the end of each rolled membrane is respectively abutted against the bottom wall used to connect the two adjacent annular walls.

[0020] In order to form the above-mentioned raw water channel, a gap is left between the outermost annular wall on the second end cover and the shell.

[0021] Preferably, the first through hole is located on the bottom wall against which the outermost rolled film of the second end cover abuts.

[0022] In order to limit the rotation of the second end cover, one of the second end cover and the housing has a limiting block, and the other has a limiting groove for the limiting block to be engaged therein.

[0023] Preferably, the shell includes a tube body extending vertically and a first end and a second end located at both ends of the tube body, the water inlet and the water outlet are both opened on the first end, and the second end is provided with a through hole for the water diversion element to be inserted into the annular wall, and the outer peripheral wall of the water diversion element is sealedly connected to the inner peripheral wall of the through hole.

[0024] In order to facilitate the user to rotate the water diversion member, the water diversion member includes a handle inserted into the through hole or at least partially exposed from the through hole.

[0025] The technical solution adopted by the utility model to solve the second technical problem is: a water purifier, characterized by having the composite filter element as mentioned above.

[0026] Compared with the prior art, the utility model has the advantages that the water-dividing member is switched from the second state to the first state by rotating the water-dividing member, so that the water-passing hole is connected with the raw water channel, so that the water-dividing member can directly connect the raw water channel with at least one flow channel fluid to form a second water flow channel intersecting with the first water flow channel. Therefore, in the case where the filter material at the most upstream is seriously clogged, the flow path of the raw water can be switched by the water-dividing member, so that the raw water can intersect with the first water flow channel without passing through the filter material at the most upstream, so as to realize the use of filter materials other than the filter material at the most upstream, improve the utilization rate of the composite filter element, and reduce waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the composite filter element in the embodiment of the utility model;

[0028] Figure 2 for Figure 1 (the water distribution member is in the first state);

[0029] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0030] Figure 4 for Figure 1 Another cross-sectional view of

[0031] Figure 5 for Figure 4 The enlarged view of point B in the middle;

[0032] Figure 6 for Figure 1 Exploded diagram of . DETAILED DESCRIPTION

[0033] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0034] like Figures 1 to 6 The figure shows a preferred embodiment of a composite filter element and a water purifier having the composite filter element of the utility model. The composite filter element comprises a housing 1, a filter assembly 2 and a water distribution element 4.

[0035] The shell 1 is hollow inside and is provided with a water inlet 1a and a water outlet 1b. In this embodiment, the shell 1 includes a tube body 11 extending vertically and a first end 12 and a second end 13 located at both ends of the tube body 11. The first end 12 and the second end 13 can be formed by integral molding, welding or assembly. Figure 4 As shown, the water inlet 1a and the water outlet 1b are both opened on the first end 12, and the second end 13 is provided with a through hole 131 for inserting the water distribution member 4 into the ring wall, and the outer peripheral wall of the water distribution member 4 is sealed with the inner peripheral wall of the through hole 131 ( Figure 5The third sealing ring 63 is used to achieve a sealed connection between the outer peripheral wall of the water distribution member 4 and the inner peripheral wall of the through hole 131).

[0036] The filter assembly 2 is arranged inside the housing 1. The filter assembly 2 includes at least two filter materials arranged inside and outside in sequence. A raw water channel 10 is formed between the filter material located at the most upstream and the housing 1, and a flow channel 20 is formed between two adjacent filter materials. The raw water channel 10, the filter holes on all the filter materials, and all the flow channels 20 together form a first water flow channel 31. The filter assembly 2 is arranged to filter the raw water flowing into the raw water channel 10 from the water inlet 1a, and the clean water flowing out of the first water flow channel 31 flows out of the housing 1 through the water outlet 1b. Figure 2 As shown, there are two filter materials in this embodiment, which are respectively recorded as the first filter material 21a and the second filter material 21b; Figure 4 As shown, the first filter material 21a and the second filter material 21b are both roll-type membranes with a circular transverse cross section, and the second filter material 21b is located downstream of the first filter material 21a.

[0037] The outer wall of the water distribution member 4 is provided with a water hole 40 penetrating the wall thickness thereof. The water distribution member 4 is constrained in the housing 1 in a manner of being able to rotate relative to the housing 1, so that the water distribution member 4 has at least the following two states:

[0038] In the first state, the water hole 40 is connected to the raw water channel 10, so that the water distribution element 4 can directly connect the raw water channel 10 with at least one flow channel 20 to form a second water flow channel 32 intersecting with the first water flow channel 31;

[0039] In the second state, the water dividing element 4 is configured to block the raw water channel 10 from the fluid of any of the flow channels 20 and to block the second water flow channel 32 .

[0040] The water distribution member 4 may be designed with a limit structure or an indication structure when rotating to ensure that the water distribution member 4 can be accurately in the first state or the second state, such as marking a reminder of rotation into position, engraving, etc. This method is a prior art and will not be elaborated here.

[0041] In order to install the filter material, the housing 1 is also provided with a first end cap 51 and a second end cap 52 for installing both ends of all the filter materials. The first end cap 51 is arranged near the water inlet 1a, and the second end cap 52 is arranged away from the water inlet 1a. Figure 4As shown, the first end cap 51 and the second end cap 52 both include annular walls that are sequentially spaced inside and outside, each roll-type membrane is respectively arranged between two corresponding adjacent annular walls, and the end of each roll-type membrane is respectively against the bottom wall used to connect the two adjacent annular walls. In this embodiment, the first end cap 51 includes a first annular wall 51a and a second annular wall 51b that are spaced inside and outside, and a first bottom wall 51c used to connect the first annular wall 51a and the second annular wall 51b, the second end cap 52 includes a third annular wall 52a and a fourth annular wall 52b that are spaced inside and outside, and a second bottom wall 52c used to connect the third annular wall 52a and the fourth annular wall 52b, the first end of the first filter material 21a is against the first bottom wall 51c, and the second end thereof is against the second bottom wall 52c. The outermost annular wall on the first end cover 51 (the first annular wall 51a in this embodiment) and the outermost annular wall on the second end cover 52 (the third annular wall 52a in this embodiment) have a gap 71 with the shell 1, and the gap 71 is for forming the above-mentioned raw water channel 10.

[0042] In order to realize the assembly of the first end cover 51 and the second end cover 52, the outer peripheral wall of the first end cover 51 is provided with a plurality of first abutting portions 51d ( Figure 6 Similarly, the outer peripheral wall of the second end cover 52 is provided with a plurality of second abutment portions 52d (which can abut against the inner wall of the tube body 11) at intervals. Figure 6 There are 4 second abutment portions 52d in the figure).

[0043] like Figure 3 and Figure 5 As shown, in this embodiment, the top of the water distribution component 4 is provided with a first plug-in portion 41 which is hollow inside and opens upward, and the second end cover 52 extends in a direction away from the filter assembly 2 to provide a second plug-in portion 521 for the first plug-in portion 41 to be inserted, and the bottom of the second end cover 52 closes the opening of the first plug-in portion 41, and the second end cover 52 is provided with a first through hole 522 which is located in the flow channel 20 and communicates with the interior of the first plug-in portion 41; in this embodiment, the first through hole 522 is located on the bottom wall against which the outermost roll membrane of the second end cover 52 abuts. In order to improve the sealing of the assembly, a circumferentially arranged first groove 411 is further provided on the outer wall of the first plug-in portion 41, and a first sealing ring 61 is installed in the first groove 411, and the first sealing ring 61 can be circumferentially sealed and connected with the inner wall of the second plug-in portion 521. In addition, in order to facilitate the rotation of the water distribution component 4, the water distribution component 4 includes a handle 42 which is inserted in the through hole 131 or at least partially exposed to the through hole 131. As shown Figure 1 As shown, in this embodiment, the handle 42 is a straight-shaped protrusion that is completely exposed from the through hole 131 , and the user can easily rotate the water diversion member 4 through the handle 42 .

[0044] The water hole 40 in this embodiment is formed on the outer wall of the first plug-in part 41, and the second plug-in part 521 is formed with a second through hole 5211 penetrating the wall thickness thereof. When the water diverter 4 is in the first state, the water hole 40 and the second through hole 5211 are arranged opposite to each other; when the water diverter 4 is in the second state, the outer wall of the second plug-in part 521 blocks the water hole 40 and the side wall of the first plug-in part 41 blocks the second through hole 5211. To further improve the sealing performance, the outer wall of the first plug-in part 41 is further provided with a second groove 412 arranged around the outer circumference of the water hole 40, and a second sealing ring 62 is assembled in the second groove 412, and the second sealing ring 62 can be sealed and connected with the inner wall of the second plug-in part 521.

[0045] Since the water distribution member 4 can easily drive the second end cover 52 to rotate simultaneously during the rotation process, one of the second end cover 52 and the housing 1 has a limit block 81, and the other has a limit groove 82 for the limit block 81 to engage therein. In this embodiment, the limit block 81 is arranged on the outer wall of the second plug-in portion 521 of the second end cover 52, and the limit groove 82 is arranged on the inner wall of the tube body 11. In this way, the limit block 81 is engaged by the limit groove 82, which can effectively prevent the second end cover 52 from rotating together with the water distribution member 4, thereby improving the working efficiency.

[0046] The composite filter element in this embodiment is a composite filter element commonly used in water purifiers. The first filter material 21a is used to intercept large particles of impurities. The working process of the composite filter element in this embodiment is as follows:

[0047] When the water flow rate of the water outlet 1b is normal, the water distribution element 4 is in the second state, that is, the raw water flowing into the raw water channel 10 from the water inlet 1a passes through the first filter material 21a and the second filter material 21b in sequence and flows out of the housing 1 from the water outlet 1b;

[0048] When the water flow rate of the water outlet 1b is in a sharp decrease (which means that the filter material is seriously blocked), the user manually rotates the water distribution member 4 to switch the water distribution member 4 from the second state to the first state, that is, at this time, the raw water flowing from the water inlet 1a into the raw water channel 10 has two flow paths:

[0049] The first flow path is: the raw water flowing into the raw water channel 10 from the water inlet 1a flows out through the first water flow channel, specifically: the raw water flowing into the raw water channel 10 from the water inlet 1a passes through the first filter material 21a and the second filter material 21b in sequence and flows out of the housing 1 from the water outlet 1b;

[0050] The second flow path is: the raw water flowing into the raw water channel 10 from the water inlet 1a passes through the second water flow channel 32 and merges with the first water flow channel 31 and flows out. Specifically, the raw water flowing into the raw water channel 10 from the water inlet 1a does not pass through the first filter material 21a, but directly passes through the second through hole 5211 and the water hole 40 in sequence into the first plug-in part 41, and finally flows to the upstream of the second filter material 21b through the first through hole 522, thereby merges with the first water flow channel 31 and flows out of the shell 1 from the water outlet 1b.

Claims

1. A composite filter element, comprising: The shell (1) is hollow inside and is provided with a water inlet (1a) and a water outlet (1b); A filter assembly (2) is arranged inside the housing (1), the filter assembly (2) comprising at least two filter materials (21a, 21b) arranged inside and outside each other in sequence, along the flow path of the fluid, a raw water channel (10) is formed between the filter material located most upstream and the housing (1), a flow channel (20) is formed between two adjacent filter materials (21a, 21b), the raw water channel (10), the filter holes on all the filter materials (21a, 21b) and all the flow channels (20) together form a first water flow channel (31), the filter assembly (2) is arranged to filter raw water flowing into the raw water channel (10) from the water inlet (1a), and the clean water flowing out of the first water flow channel (31) flows out of the housing (1) through the water outlet (1b); The invention is characterized in that it also includes: The water distribution member (4) has a water hole (40) on its outer wall which penetrates the thickness of the wall. The water distribution member (4) is constrained in the shell (1) in a manner that it can rotate relative to the shell (1), thereby having at least the following two states: In a first state, the water passage (40) is connected to the raw water channel (10), so that the water distribution element (4) can directly connect the raw water channel (10) with at least one flow channel (20) to form a second water flow channel (32) intersecting with the first water flow channel (31); In the second state, the water dividing element (4) is configured to block the fluid of the raw water channel (10) and any flow channel (20) to isolate the second water flow channel (32).

2. The composite filter element according to claim 1, characterized in that: A second end cover (52) for mounting one end of all filter materials (21a, 21b) is also provided in the housing (1), and the second end cover (52) is arranged away from the water inlet (1a).

3. The composite filter element according to claim 2, characterized in that: The top of the water diversion element (4) is provided with a first plug-in portion (41) which is hollow inside and opens upward, the second end cover (52) extends in a direction away from the filter assembly (2) to have a second plug-in portion (521) for plugging the first plug-in portion (41), and the bottom of the second end cover (52) closes the opening of the first plug-in portion (41), and the second end cover (52) is provided with a first through hole (522) which is located in the flow channel (20) and communicates with the interior of the first plug-in portion (41).

4. The composite filter element according to claim 3, characterized in that: A circumferentially arranged first groove (411) is also provided on the outer wall of the first plug-in portion (41), a first sealing ring (61) is installed in the first groove (411), and the first sealing ring (61) can be circumferentially sealed and connected to the inner wall of the second plug-in portion (521).

5. The composite filter element according to claim 3, characterized in that: The water passage hole (40) is formed on the outer wall of the first plug-in portion (41); the second plug-in portion (521) is formed with a second through hole (5211) penetrating the wall thickness thereof; when the water diverter (4) is in a first state, the water passage hole (40) and the second through hole (5211) are arranged opposite to each other; when the water diverter (4) is in a second state, the outer wall of the second plug-in portion (521) blocks the water passage hole (40) and the side wall of the first plug-in portion (41) blocks the second through hole (5211).

6. The composite filter element according to claim 4, characterized in that: The outer wall of the first plug-in portion (41) is also provided with a second groove (412) arranged around the outer circumference of the water hole (40); a second sealing ring (62) is installed in the second groove (412); and the second sealing ring (62) can be sealed and connected to the inner wall of the second plug-in portion (521).

7. The composite filter element according to claim 5, characterized in that: Each filter material (21a, 21b) is a rolled membrane with a circular cross section. Accordingly, the second end cover (52) includes annular walls (52a, 52b) arranged in sequence inside and outside, and each rolled membrane is respectively arranged between two corresponding adjacent annular walls (52a, 52b), and the end of each rolled membrane is respectively against the bottom wall (52c) used to connect the two adjacent annular walls (52a, 52b).

8. The composite filter element according to claim 7, characterized in that: A gap (71) is left between the outermost annular wall on the second end cover (52) and the housing (1).

9. The composite filter element according to claim 8, characterized in that: The first through hole (522) is located on the bottom wall against which the outermost rolled film of the second end cover (52) abuts.

10. The composite filter element according to any one of claims 2 to 9, characterized in that: One of the second end cover (52) and the housing (1) has a limit block (81), and the other has a limit groove (82) in which the limit block (81) is engaged.

11. The composite filter element according to any one of claims 1 to 9, characterized in that: The shell (1) comprises a tube body (11) extending vertically, and a first end (12) and a second end (13) located at both ends of the tube body (11); the water inlet (1a) and the water outlet (1b) are both provided on the first end (12); the second end (13) is provided with a through hole (131) for inserting the water distribution element (4) into the ring wall; the outer peripheral wall of the water distribution element (4) and the inner peripheral wall of the through hole (131) are sealedly connected.

12. The composite filter element according to claim 11, characterized in that: The water distribution member (4) comprises a handle (42) inserted into the through hole (131) or at least partially exposed outside the through hole (131).

13. A water purifier, characterized in that: A composite filter element as claimed in any one of claims 1 to 12.

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