Filter element assembly and washing water treater

Abstract

The invention discloses a filter element assembly and a washing water treater, the filter element assembly comprises multiple stages of filter materials which are distributed step by step along the water flow direction, and the multiple stages of filter materials comprise: a PP cotton layer used for removing particulate matters in a water body; the activated carbon layer is used for removing residual chlorine, different colors and peculiar smell in the water body; the zinc oxide layer is used for removing bacteria in the water body; the mineral aggregate layer is used for releasing microelements beneficial to human bodies into the water body, and the microelements comprise at least one of strontium, zinc and metasilicic acid. Toxic and harmful substances in water can be removed, safety of domestic water is guaranteed, mineral elements can be added to improve water quality, and health of skin, hair, teeth and the like is promoted.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment, and in particular to a filter element component and a washing water processor. Background Art

[0002] Most of the existing terminal accessories (faucets, shower heads, etc.) such as bathroom cabinets and showers do not undergo water quality treatment and are directly connected to tap water. Tap water contains harmful substances such as rust, silt, algae, colloids, organic matter, residual chlorine, bacteria, heavy metal ions, viruses, etc., and long-term use will affect the health of users. Medical experts in Wisconsin, USA reported that more than 80% of residual chlorine and toxic and harmful substances in water enter the human body through the skin, causing problems such as dry skin, itching, spots, acne, and hair loss. For this reason, some water quality treatment equipment has appeared in the prior art for treating washing water. This kind of water quality treatment equipment generally uses filter materials such as PP cotton, activated carbon, and softening resin, which can remove granular impurities and residual chlorine in the water, but usually does not have a sterilization function and cannot release trace elements that are beneficial to the human body. Therefore, the water quality treatment equipment used for washing water treatment in the prior art still cannot meet people's demand for healthy washing water. Summary of the invention

[0003] In view of the technical problems existing in the prior art, the present invention provides a filter element assembly and a washing water processor, which can remove toxic and harmful substances in water, ensure the safety of domestic water, and can add mineral elements to improve water quality.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a filter element assembly, including multi-stage filter materials distributed step by step along the water flow direction, the multi-stage filter materials include:

[0005] PP cotton layer, used to remove particles from water;

[0006] Activated carbon layer, used to remove residual chlorine, discoloration and odor from water;

[0007] A zinc oxide layer to remove bacteria from the water;

[0008] The mineral material layer is used to release trace elements beneficial to human body into the water body, wherein the trace elements include at least one of strontium, zinc and metasilicic acid.

[0009] Furthermore, the zinc oxide layer is the last stage of the multi-stage filter material in the water flow direction.

[0010] Furthermore, the PP cotton layer is folded polypropylene cotton, and the pore size of the PP cotton layer is 1-10 microns; the activated carbon layer includes activated carbon and / or silver-loaded activated carbon.

[0011] Furthermore, the mass ratio of the activated carbon layer to the zinc oxide layer is (5-10):1.

[0012] Furthermore, the mineral material layer includes one or more of calcite, zeolite, hydrozincite and dolomite.

[0013] Further, the mineral material layer includes calcite, zeolite and hydrozincite, and the mass ratio of the calcite, zeolite and hydrozincite is (25-40):(7-14):(1-2); or, the mineral material layer includes calcite and zeolite, and the mass ratio of the calcite and zeolite is (8-10):(5-7); or, the mineral material layer includes calcite, zeolite and dolomite, and the mass ratio of the calcite, zeolite and dolomite is (25-40):(7-14):(5-10).

[0014] Furthermore, the mass ratio of the mineral layer to the activated carbon layer is 2:1.

[0015] Furthermore, the multi-stage filter material also includes at least one of softening resin, medical stone, ultrafiltration membrane, and KDF alloy.

[0016] Furthermore, it also includes a filter barrel, which is provided with an inlet and an outlet; there is one filter barrel, and the multi-stage filter material is arranged in the filter barrel, or there are multiple filter barrels, and the multi-stage filter material is arranged in multiple filter barrels, and the multiple filter barrels are connected in series; water entering the filter barrel from the inlet of the filter barrel is processed by the filter material in the filter barrel and then output from the outlet of the filter barrel.

[0017] Furthermore, the filter barrel includes a barrel body and an end cover assembly, one end of the barrel body is provided with an opening and is sealed and connected to the end cover assembly, the end cover assembly is provided with the inlet and the outlet, or the end cover assembly is provided with one of the inlet and the outlet, and the other end of the barrel body is provided with the other of the inlet and the outlet; the PP cotton layer and the activated carbon layer are respectively annular, and a raw water cavity connected to the inlet is formed between the activated carbon layer and the barrel body, the PP cotton layer is located on the inner side of the activated carbon layer, the mineral layer is provided between the PP cotton layer and the activated carbon layer, the zinc oxide layer is provided in the cavity surrounded by the PP cotton layer, and a filter is provided between the oxidation core layer and the outlet.

[0018] The present invention further provides a washing water processor, comprising the filter element assembly as described above in the present invention.

[0019] Furthermore, it also includes a water inlet, a water outlet, a switching valve, a raw water waterway, and a switching valve. The filter element assembly is arranged on the clean water waterway. The switching valve has a water inlet end, a first water outlet end and a second water outlet end which are switched and connected to the water inlet end. The water inlet end of the switching valve is connected to the water inlet, the first water outlet end is connected to the water inlet end of the raw water waterway, and the second water outlet end is connected to the water inlet end of the filter element assembly. The water outlet end of the filter element assembly and the water outlet end of the raw water waterway are respectively connected to the water outlet, and a first one-way valve is provided between the filter element assembly and the water outlet, and a second one-way valve is provided on the raw water waterway.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The multi-stage filter material of the present invention includes the PP cotton layer, the activated carbon layer, the zinc oxide layer and the mineral layer, which can remove toxic and harmful substances in the water body, ensure the safety of domestic water, and can add mineral elements to improve water quality and promote the health of skin, hair, teeth, etc.

[0022] 2. The present invention uses the zinc oxide layer as the last stage of the multi-stage filter material in the water flow direction, which can completely disinfect bacteria carried by the water body itself and bacteria carried by other filter materials, thereby further improving the safety of domestic water.

[0023] 3. The present invention can ensure that the water flow rate of daily washing water meets the usage requirements by reasonably controlling the pore size of the PP cotton layer.

[0024] 4. The arrangement of the raw water circuit, the switching valve, etc. enables the present invention to switch to the raw water circuit outlet when the filter element assembly fails or needs to be replaced, thereby not affecting the water demand of the installation location.

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments; however, the filter element assembly and washing water processor of the present invention are not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a cross-sectional view of a first filter element assembly of the present invention;

[0027] Figure 2 is a schematic diagram of the three-dimensional structure of the second filter element assembly of the present invention;

[0028] Figure 3 is a schematic diagram of the application of the second filter element assembly of the present invention;

[0029] Figure 4 is an exploded schematic diagram of a third filter element assembly of the present invention;

[0030] Figure 5 is a schematic diagram of the application of the third filter element assembly of the present invention;

[0031] Figure 6 is an exploded schematic diagram of a fourth filter element assembly of the present invention;

[0032] Figure 7 is a schematic diagram of the application of the fourth filter element assembly of the present invention;

[0033] Figure 8 is a schematic diagram of the principle of the washing water processor of the present invention in the water purification mode;

[0034] Fig. 9 is a schematic diagram of the principle of the washing and gargling processor of the present invention in the raw water mode;

[0035] Fig.10 is a cross-sectional view of the switching valve of the present invention in the water purification mode;

[0036] Fig.11 is a cross-sectional view of the switching valve of the present invention in the raw water mode;

[0037] In the figure, 1. activated carbon layer; PP cotton layer; 3. mineral layer; 4. zinc oxide layer; 5. filter barrel; 51. barrel body; 52. end cover assembly; 521. inlet; 522. outlet; 53. filter; 6. conversion joint; 7. faucet; 8. shower; 9. integrated water channel module; 10. bathroom cabinet; 20. water inlet; 30. water outlet; 40. switching valve; 401. valve core; 50. raw water channel; 60. first one-way valve; 70. second one-way valve. DETAILED DESCRIPTION

[0038] In the present invention, the terms "first", "second", etc. are only used to distinguish similar objects, rather than to describe a specific order or sequence, and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0039] A filter element assembly of the present invention comprises a multi-stage filter material distributed step by step along a water flow direction, wherein the multi-stage filter material comprises:

[0040] PP cotton layer, used to remove particles from water;

[0041] Activated carbon layer, used to remove residual chlorine, discoloration and odor from water;

[0042] A zinc oxide layer to remove bacteria from the water;

[0043] The mineral material layer is used to release trace elements beneficial to the human body into the water body, and the trace elements include at least one of strontium, zinc and metasilicic acid.

[0044] Strontium is a dental caries-preventing mineralizer. The mechanism of strontium's anti-caries effect is: ① It changes the size of hydroxyapatite crystals. The larger the crystals, the smaller the surface and the less likely they are to dissolve. ② It forms a stable surface coating on the surface of hydroxyapatite crystals, thereby reducing the solubility or acid dissolution rate of enamel. ③ It inhibits bacterial growth, reduces acid production, or inhibits the binding of caries-causing bacteria to surface enamel, inhibits the pH drop caused by sugar, etc.

[0045] Strontium also has the effect of relieving dental discomfort such as dentin hypersensitivity. Strontium salts are often added to toothpaste and mouthwash. The principle of strontium relieving dental discomfort is that the fluid that expands or contracts due to external stimulation is contained in the dentin capillaries. Dentin hypersensitivity is due to the rapid movement of fluid in the dentinal tubules, transmitting pain to stimulate the pulp. The mechanism of action of dentin sensitivity treatment is aimed at blocking the dentinal tubules, thereby reducing the movement of dentinal fluid. There are two mechanisms for strontium to treat dentin hypersensitivity: ① It is used as a protein precipitator; ② Strontium ions can penetrate deeply into the dentinal tubules and block the dentinal tubules.

[0046] Strontium also has antioxidant, anti-aging, and beauty effects. The principle is that collagenase (also known as collagen hydrolase) can act on normal collagen metabolism and various rapid reconstruction processes, such as wound healing. In the collagenase catalysis process, Ca 2+ It has a dual role, one is as an enzyme activator, and the other is as a critical thermal stabilizer at physiological temperature and pH; Sr 2+ Can replace Ca 2+ As a heat stabilizer for collagenase cultured from human skin organs, it can activate and stabilize purified human skin fibroblast collagenase.

[0047] Strontium has special therapeutic effects on chronic eczema, psoriasis and other skin diseases, and can also relieve skin allergies. Principle: Strontium salts have a significant inhibitory effect on TNF-α (tumor necrosis factor α). Therefore, strontium salts have anti-inflammatory effects. Strontium has special therapeutic effects on chronic eczema, psoriasis and other skin diseases, and can also relieve skin allergies.

[0048] The effect of zinc on beauty: The skin contains a high amount of zinc, accounting for about 20% of the total zinc content in the body. Zinc can keep the skin and mucous membranes in a normal state. Zinc is a structural component of biological cell membranes and can easily make the skin smoother and more delicate. People who lack zinc are also prone to skin diseases, such as herpes in the mouth and acne on the face. Therefore, zinc supplementation is very important and can effectively prevent the occurrence of skin diseases. Zinc supplementation can also help protein synthesis, thereby increasing skin elasticity.

[0049] Therefore, the present invention can remove toxic and harmful substances in water bodies to ensure the safety of domestic water, and the present invention can add trace elements such as strontium and zinc to the water body to improve water quality and promote the health of skin, hair, teeth, etc.

[0050] The PP cotton layer is folded polypropylene cotton, the pore size of the PP cotton layer is 1-10 microns, the turbidity removal rate is >50%, and it can ensure that the water flow rate meets the use requirements. In this embodiment, the pore size of the PP cotton layer is preferably 5 microns, but it is not limited to this, and it can be flexibly selected according to the actual volume. The activated carbon layer includes activated carbon and / or silver-loaded activated carbon, wherein the silver-loaded activated carbon can inhibit bacterial growth. The activated carbon layer can use granular activated carbon or fibrous activated carbon. The mass ratio of the activated carbon layer to the zinc oxide layer is (5-10):1, and the preferred value is 10:1, but it is not limited to this. In this way, the activated carbon layer can remove the color and odor of the water body, residual chlorine, etc., and the residual chlorine removal rate is >80%. The zinc oxide particles can remove bacteria in the water body, and the bacteria removal rate is >99.9%. The water flow rate is >6L / min, and the service life can reach more than one year.

[0051] In this embodiment, the mineral material layer includes one or more of calcite, zeolite, hydrozincite, and dolomite, and different mineralized materials can be adapted to different domestic water use scenarios.

[0052] Specifically, for the water scene of washing and showering, the mineral layer includes calcite, zeolite and hydrozincite, and the mass ratio of calcite, zeolite and hydrozincite is (25-40):(7-14):(1-2), and the optimal value is 40:14:1. The mass ratio of the mineral layer to the activated carbon fiber is 2:1. Under this scheme, the effluent is rich in strontium and zinc, which can resist oxidation and prevent aging, beautify and nourish the skin, and is effective for skin diseases such as chronic eczema and psoriasis, and can also relieve skin allergies.

[0053] For the water scene of brushing teeth, the mineral layer includes calcite and zeolite, and the mass ratio of calcite to zeolite is (8-10):(5-7), and the optimal value is 10:7. The mass ratio of the mineral layer to the activated carbon fiber is 2:1. Under this scheme, the effluent is rich in strontium, which is a dental caries-preventing mineralizer and has the effect of relieving dental discomfort such as dentin hypersensitivity.

[0054] For the skin care toner spray scenario, the mineral layer includes calcite, zeolite, and dolomite. The mass ratio of calcite, zeolite, and dolomite is (25-40):(7-14):(5-10), and the optimal value is 40:14:5. The mass ratio of the mineral layer to the activated carbon fiber is 2:1. Under this scheme, the effluent is rich in metasilicic acid and strontium, which can activate cell vitality, enhance skin elasticity, and reduce fine lines and red blood streaks.

[0055] The multi-stage filter material may further include at least one of softening resin, medical stone, ultrafiltration membrane, KDF alloy, etc., wherein the softening resin can reduce the hardness of water and prevent scale formation; medical stone can adsorb free metal particles in water, adjust the pH value in both directions, and release the ever-bright elements K, Na, etc.; the filtration accuracy of the ultrafiltration membrane is 0.01 microns, and its main function is to intercept colloids, bacteria, etc. in water and reduce the turbidity of tap water; KDF alloy can remove residual chlorine, heavy metals, and acid radical ions in water, improve the activation degree of water, and inhibit the reproduction of microorganisms. The present invention can select to add at least one filter material of softening resin, medical stone, ultrafiltration membrane, KDF alloy, etc. according to different usage scenarios. For example, for the bathroom cabinet scene, in addition to the four filter materials of PP cotton layer, activated carbon layer, zinc oxide layer and mineral layer, softening resin and ultrafiltration membrane can also be added; for the balcony cabinet scene, in addition to the four filter materials of PP cotton layer, activated carbon layer, zinc oxide layer and mineral layer, softening resin can also be added; for the shower scene, in addition to the four filter materials of PP cotton layer, activated carbon layer, zinc oxide layer and mineral layer, softening resin and medical stone can also be added; for the bathtub scene, in addition to the four filter materials of PP cotton layer, activated carbon layer, zinc oxide layer and mineral layer, softening resin and KDF alloy can also be added.

[0056] The zinc oxide layer is the last stage of the multi-stage filter material in the water flow direction, so that the zinc oxide layer can not only disinfect the bacteria carried by the water itself, but also the bacteria brought in by other filter materials, thereby further improving the safety of domestic water.

[0057] The present invention also includes a filter barrel, which is provided with an inlet and an outlet; there is one filter barrel, and the multi-stage filter material is arranged in the filter barrel, or there are multiple filter barrels, and the multi-stage filter material is arranged in multiple filter barrels, and the multiple filter barrels are connected in series; water entering the filter barrel from the inlet of the filter barrel is processed by the filter material in the filter barrel and then output from the outlet of the filter barrel.

[0058] The present invention is further described below by taking four filter materials, namely, a single-stage filter barrel, a PP cotton layer, an activated carbon layer, a zinc oxide layer and a mineral material layer, as examples. Figure 1As shown, the filter barrel 5 specifically includes a barrel body 51 and an end cap assembly 52, one end of the barrel body 51 is provided with an opening, and the end cap assembly 52 is sealed, and the other end of the barrel body 51 is closed; the end cap assembly 52 is provided with an inlet 521 and an outlet 522 whose axes are parallel to or coincide with the axis of the barrel body 51; the PP cotton layer 2 and the activated carbon layer 1 (the activated carbon layer 1 uses activated carbon fiber) are respectively annular, and the PP cotton layer 2 and the activated carbon layer 1 are respectively arranged concentrically with the barrel body 51, and a raw water cavity connected to the inlet 521 is formed between the activated carbon layer 1 and the barrel body 51, the PP cotton layer 2 is located inside the activated carbon layer 1, the mineral material layer 3 is arranged between the PP cotton layer 2 and the activated carbon layer 1, and the zinc oxide layer 4 is arranged in the cavity surrounded by the PP cotton layer 2. The present invention also uses a filter screen to intercept zinc oxide particles to prevent the zinc oxide particles from being washed out by water flow, and the filter screen is specifically arranged between the end cap assembly 52 and the filter material. Therefore, the activated carbon layer 1, the mineral material layer 3, the PP cotton layer 2, and the zinc oxide layer 4 are distributed in sequence along the water flow direction. Figure 1 The embodiment shown is only one embodiment of the present invention. The number of filter barrels 5, the type of filter material and the distribution order are not limited thereto, and the structure of the filter barrel 5 is not limited thereto. In other embodiments, the end cover assembly 52 of the filter barrel 5 adopts a lateral water inlet and lateral water outlet mode, and is connected with a conversion joint 6 for connecting to a faucet, such as Figure 2 As shown, therefore, this single-stage filter barrel 5 is suitable for being directly connected to the end of the faucet 7, such as Figure 3 shown.

[0059] The structure of the filter barrel 5 can also be adopted as follows Figure 4 The structure shown in the figure: one end of the barrel body 51 is sealedly connected to the end cover assembly 52, the end cover assembly 52 is provided with an inlet 521, and the other end of the barrel body is provided with an outlet 522. Figure 4 The single-stage filter barrel 5 shown is suitable for being connected to the front end of a faucet, for example, to the front end of a shower 8, such as Figure 5 shown.

[0060] The number of filter barrels 5 can be set to multiple, and the multiple filter barrels are connected in series one by one. Taking two filter barrels 5 as an example, the two filter barrels 5 are connected in series through the integrated water channel module 9, such as Figure 6 This multi-stage structure consisting of multiple filter barrels 5 is suitable for connecting to the front end of a faucet, for example, installed in a bathroom cabinet 10, such as Figure 7 shown.

[0061] A filter element assembly of the present invention is Figure 1 The filter barrel 5 shown in the figure is subjected to a water flow test, wherein the mineral material layer 3 includes calcite, zeolite and hydrozincite, the mass ratio of calcite, zeolite and hydrozincite is 40:14:1, the mass ratio of the activated carbon layer to the zinc oxide layer is 10:1, and the relevant data are tested to obtain the following three tables;

[0062] Table 1: When the mass ratio of PP cotton layer 2, activated carbon layer 1, and mineral layer 3 is 2:2:1, the volume is appropriate.

[0063]

[0064] Table 2: When the mass ratio of PP cotton layer 2, activated carbon layer 1, and mineral layer 3 is 3:2:1, because the volume of PP cotton increases, the water output rate decreases slightly, the turbidity removal rate increases slightly, but the volume increases significantly.

[0065]

[0066] Table 3: When the mass ratio of PP cotton layer 2, activated carbon layer 1, and mineral layer 3 is 2:3:1, the water effluent rate is similar to that of the first scheme, and the element release concentration is similar, but the volume is larger than that of the first scheme.

[0067]

[0068] The filter element assembly of the present invention can effectively remove impurities such as rust, silt, red worms, algae, residual chlorine, discoloration, odor, calcium and magnesium ions, bacteria, viruses, heavy metals, etc. in tap water. At the same time, the mineral layer can also release trace elements that are beneficial to the human body and skin, such as strontium and zinc.

[0069] A washing water processor of the present invention comprises the filter element assembly as described above in the present invention.

[0070] Further, such as Figure 8-Figure 11 As shown, the present invention also includes a water inlet 20, a water outlet 30, a switching valve 40, and a raw water waterway 50. The filter element assembly is arranged on the clean water waterway. The switching valve 40 has a water inlet end, a first water outlet end and a second water outlet end switched and connected with the water inlet end. The water inlet end of the switching valve 40 is connected to the water inlet 20, the first water outlet end is connected to the water inlet end of the raw water waterway 50, and the second water outlet end is connected to the water inlet end of the filter element assembly. The water outlet end of the filter element assembly and the water outlet end of the raw water waterway 50 are respectively connected to the water outlet 30. Specifically, the water outlet end of the filter element assembly and the water outlet end of the raw water waterway 50 are connected to the water outlet 30 through a three-way pipe. A first one-way valve 60 is arranged between the filter element assembly and the water outlet 30, and a second one-way valve 70 is arranged on the raw water waterway 50 to prevent the water outlet of the raw water waterway 50 and the water outlet of the filter element assembly from flowing in parallel.

[0071] The present invention also includes a housing part (not shown in the figure), and the water inlet 20 and the water outlet 30 are arranged in the housing part, but it is not limited to this. In other embodiments, the water inlet 20 and the water outlet 30 are respectively arranged in corresponding joint pipes. The switching valve 40, the raw water waterway 50, the filter element assembly, the first check valve 60, and the second check valve 70 are arranged in the housing part. The switching valve 40 can be a mechanical valve, and its valve core 401 can be opened and closed by rotating 90°, such as Fig.10, Fig.11 As shown, but not limited to this, in other embodiments, the switching valve 40 is an electric valve, such as a solenoid valve. Figure 8 , Fig. 9 In the present invention, a two-stage filter barrel 5 is used as an example to constitute a filter element assembly, but it is not limited thereto. For a filter element assembly formed by connecting multiple filter barrels 5 in series, the water inlet and outlet of the filter element assembly are the inlet 521 of the first filter barrel 5 and the outlet 522 of the last filter barrel 5, respectively.

[0072] When the filter element assembly can work normally, the water entering from the water inlet 20 flows to the filter element assembly through the second water outlet end of the switching valve 40, and flows to the water outlet 30 through the first one-way valve 60 after being purified by the filter element assembly. Figure 8 As shown in the figure, the arrow indicates the direction of water flow, which is finally output from the water outlet terminal (such as faucet, shower, etc.) to provide users with safe, healthy washing water containing trace elements.

[0073] When the filter element assembly is clogged or needs to be replaced, the switching valve 40 is operated to switch the water path to the raw water path 50 for water outlet. At this time, the water entering from the water inlet 20 flows along the first water inlet end of the switching valve 40 to the raw water path 50, and flows to the water outlet 30 through the second one-way valve 70. Fig. 9 As shown, necessary living water is provided to users, thereby not affecting the water demand of the installation location of the present invention.

[0074] Regarding the structure and working principle of the filter element assembly, please refer to the previous description thereof, which will not be repeated here.

[0075] The filter element assembly and washing water processor of the present invention, the unrelated parts are the same as the prior art or can be implemented by using the prior art.

[0076] The above embodiments are only used to further illustrate a filter element assembly and a washing water processor of the present invention, but the present invention is not limited to the embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention fall within the protection scope of the technical solution of the present invention.

Claims

1. A filter element assembly, comprising multiple levels of filter materials distributed step by step along the water flow direction, characterized in that: The multi-stage filter material comprises: PP cotton layer, used to remove particles from water; Activated carbon layer, used to remove residual chlorine, discoloration and odor from water; A zinc oxide layer to remove bacteria from the water; The mineral material layer is used to release trace elements beneficial to human body into the water body, wherein the trace elements include at least one of strontium, zinc and metasilicic acid.

2. The filter element assembly according to claim 1, characterized in that: The zinc oxide layer is the last stage of the multi-stage filter material in the water flow direction.

3. The filter element assembly according to claim 1, characterized in that: The mass ratio of the activated carbon layer to the zinc oxide layer is (5-10):

1.

4. The filter element assembly according to claim 1, characterized in that: The mineral material layer includes one or more of calcite, zeolite, hydrozincite and dolomite.

5. The filter element assembly according to claim 4, characterized in that: The mineral material layer includes calcite, zeolite and hydrozincite, and the mass ratio of the calcite, zeolite and hydrozincite is (25-40):(7-14):(1-2); or, the mineral material layer includes calcite and zeolite, and the mass ratio of the calcite and zeolite is (8-10):(5-7); or, the mineral material layer includes calcite, zeolite and dolomite, and the mass ratio of the calcite, zeolite and dolomite is (25-40):(7-14):(5-10).

6. The filter element assembly according to claim 1, characterized in that: The mass ratio of the mineral material layer to the activated carbon layer is 2:

1.

7. The filter element assembly according to claim 1, characterized in that: The multi-stage filter material also includes at least one of softening resin, medical stone, ultrafiltration membrane, and KDF alloy.

8. The filter element assembly according to any one of claims 1 to 7, characterized in that: It also includes a filter barrel, which is provided with an inlet and an outlet; there is one filter barrel, and the multi-stage filter material is arranged in the filter barrel, or there are multiple filter barrels, and the multi-stage filter material is arranged in multiple filter barrels, and the multiple filter barrels are connected in series; water entering the filter barrel from the inlet of the filter barrel is processed by the filter material in the filter barrel and then output from the outlet of the filter barrel.

9. The filter element assembly according to claim 8, characterized in that: The filter barrel includes a barrel body and an end cover assembly, wherein an opening is provided at one end of the barrel body and is sealed and connected to the end cover assembly, the end cover assembly is provided with the inlet and the outlet, or the end cover assembly is provided with one of the inlet and the outlet, and the other end of the barrel body is provided with the other of the inlet and the outlet; the PP cotton layer and the activated carbon layer are respectively annular, and a raw water cavity connected to the inlet is formed between the activated carbon layer and the barrel body, the PP cotton layer is located on the inner side of the activated carbon layer, the mineral material layer is provided between the PP cotton layer and the activated carbon layer, the zinc oxide layer is provided in the cavity surrounded by the PP cotton layer, and a filter screen is provided between the oxidation core layer and the outlet.

10. A washing water processor, characterized in that: Comprising a filter element assembly as described in any one of claims 1-9.

11. The washing water processor according to claim 10, characterized in that: It also includes a water inlet, a water outlet, a switching valve, a raw water waterway, and a switching valve. The filter element assembly is arranged on the clean water waterway. The switching valve has a water inlet end, a first water outlet end and a second water outlet end which are switched and connected to the water inlet end. The water inlet end of the switching valve is connected to the water inlet, the first water outlet end is connected to the water inlet end of the raw water waterway, the second water outlet end is connected to the water inlet end of the filter element assembly, the water outlet end of the filter element assembly and the water outlet end of the raw water waterway are respectively connected to the water outlet, and a first one-way valve is provided between the filter element assembly and the water outlet, and a second one-way valve is provided on the raw water waterway.

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