Filter element and faucet filter adopting same

Abstract

The utility model provides a filter element and a faucet filter adopting the filter element. The filter element comprises a first filter body and a second filter body, the first filter body is of a hollow structure, a first connector and a second connector are arranged on the two sides of the first filter body respectively, and the second filter body is connected to the outer side of the first filter body in a sleeving mode and can move along the first filter body. The filter element is of a double-layer structure, has buffering, double filtering and antibacterial functions, is simple in structure and durable, and can effectively remove various silt, rust, heavy metal, residual chlorine and other harmful impurities in water. Experiments prove that after the filter element is used for a faucet filter, the filter element can be used for 4-5 months for a long time, and the removal rate of chloride ions in water is maintained at 96% or above after the filter element is used for 4 months and is maintained at 48% or above after the filter element is used for 6 months.

Description

Technical Field

[0001] This utility model relates to the field of filtration equipment technology, specifically to filter elements and faucet filters using the filter elements. Background Technology

[0002] Existing filter cartridges for faucet filters are mostly single-layer or double-layer fixed structures without buffering function. Furthermore, given the limited internal space of existing faucet filters, it is difficult to further increase the filtration capacity of the internal filter cartridges. When faced with large water flows or large particles in the water, the single-layer or double-layer fixed structure exhibits certain shortcomings. For example, the filter may be flushed open or instantly clogged due to the large water flow or particles. Currently, there are no filter cartridges that simultaneously have buffering and dual filtration functions. Summary of the Invention

[0003] The purpose of this invention is to provide a filter element and a faucet filter using the filter element. The filter element has buffering and dual filtration functions, which can extend the service life within a certain range and has a better filtration effect than a single-layer filter element.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] In a first aspect, the present invention provides a filter element, comprising: a first filter body and a second filter body, wherein the first filter body is a hollow structure, and a first connector and a second connector are respectively provided on both sides of the first filter body, and the second filter body is sleeved on the outside of the first filter body and can move along the first filter body.

[0006] Preferably, the first connector closes one end of the first filter body, and / or the second connector has a through hole communicating with the hollow structure of the first filter body; preferably, a third filter body is further provided inside the hollow structure.

[0007] Preferably, the first connector is provided with a water distributor; more preferably, the water distributor is a plurality of protruding strips; and even more preferably, the protruding strips are arranged in a matrix.

[0008] Preferably, the first connector is further provided with a positioning groove, and the protrusions are arranged in a ring matrix around the positioning groove; more preferably, the number of protrusions is 6 to 10.

[0009] Preferably, the height of the second filter body is not higher than that of the first filter body, and / or the thickness of the second filter body is not lower than that of the first filter body.

[0010] Secondly, this utility model provides a faucet filter, including an inlet section and an outlet section, wherein the filter element described in the first aspect is loaded inside the inlet section.

[0011] Preferably, one end of the water inlet and one end of the water outlet are detachably connected; more preferably, a sealing gasket is provided at the connection; the other end of the water inlet is provided with a water inlet; more preferably, a water flow damper is provided at the water inlet; the other end of the water outlet is provided with a water outlet plate, and a plurality of water outlet holes are provided on the water outlet plate.

[0012] Preferably, the water flow damper is connected to the first connector of the first filter body; more preferably, the water flow damper is provided with a positioning head, and the first connector is provided with a positioning slot that matches the positioning head.

[0013] Preferably, the water outlet section is provided with a water outlet control component; more preferably, a plurality of water outlet holes are arranged on the water outlet plate to form multiple water outlet modes, and the water outlet control component has different switch positions to control the water outlet mode.

[0014] Preferably, the water outlet control component includes a mounting plate, on which a rotating shaft and at least one water outlet hole are provided. The rotating shaft is rotatably connected to a water outlet control key. A plug for opening and closing the water outlet hole is provided on one side of the water outlet control key, and the bottom of the plug matches the water outlet hole.

[0015] More preferably, the water outlet section is further provided with a limiter for limiting the rotation angle of the water outlet control key.

[0016] This invention provides a filter element for use in faucet filters. The filter element has a double-layer structure, providing buffering, dual filtration, and antibacterial functions. It is simple in structure, durable, and effectively removes various harmful impurities from water, such as sediment, rust, heavy metals, and residual chlorine. Experiments have shown that this filter element, when used in a faucet filter, can be used for 4-5 months. The chlorine ion removal rate remains above 96% after 4 months of use and above 48% after 6 months of use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a filter element of this utility model.

[0018] Figure 2 yes Figure 1 A schematic diagram of the filter element from another angle.

[0019] Figure 3 This is a structural disassembly diagram of the first filter body and the connectors at both ends of this utility model.

[0020] Figure 4 These are schematic diagrams of two structures of the water distributor of this utility model.

[0021] Figure 5This is a schematic diagram of the structure of the second filter body of this utility model.

[0022] Figure 6 This is a schematic diagram of the structure of a faucet filter according to this utility model.

[0023] Figure 7 yes Figure 5 A schematic diagram of the water inlet section.

[0024] Figure 8 yes Figure 5 A schematic diagram of the water outlet section.

[0025] Figure 9 This is a schematic diagram of the water outlet control component of this utility model.

[0026] Figure 10 This is a control mode diagram of the water outlet control component of this utility model.

[0027] Figure 11 This is one arrangement of the water outlet holes in this utility model.

[0028] Figures 1-11 In the middle, 1-first filter body, 2-second filter body, 3-first connector, 4-second connector, 5-through hole, 6-water distributor, 7-positioning slot, 8-water inlet, 9-water outlet, 10-water inlet, 11-water flow buffer, 12-observation window, 13-water outlet plate, 14-water outlet hole one, 15-positioning head, 16-water outlet control component, 17-mounting plate, 18-rotating shaft, 19-water outlet hole two, 20-water outlet control key, 21-blocker, 22-rotating shaft through hole, 23-transparent partition, 24-water inlet. Detailed Implementation

[0029] In the description of this utility model, it should be noted that unless specific conditions are specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall apply. Reagents or instruments whose manufacturers are not specified are all commercially available conventional products.

[0030] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0031] A specific embodiment of this utility model provides a filter element, such as... Figures 1-5As shown, the filter includes a first filter element 1 made of activated carbon fiber with added silver ions and a second filter element 2 made of polypropylene (PP) with added silver ions. The first filter element 1 has a hollow structure, and a first connector 3 and a second connector 4 are respectively provided on both sides of the first filter element 1. The second filter element 2 is sleeved on the outside of the first filter element 1 and can move along the first filter element 1. Existing filter elements for faucets or shower heads are mostly fixed single-layer or double-layer filter elements. Regardless of the type, they can filter particulate matter, but their antibacterial and dechlorination effects are poor. Furthermore, when encountering large water flows or a large amount of particulate matter in the water, single-layer or double-layer filter elements cannot handle the situation well, which can easily lead to the connection between the faucet and the water pipe being backflowed or momentarily blocked. Therefore, the design of the second filter element 2 in this invention can effectively buffer large water flows. Specifically, when a large water flow enters from the inlet side of the first filter element 1, the second filter element 2 slides along the first filter element 1 under the action of the water flow, thus buffering the water flow. Simultaneously, both the surfaces of the first and second filter elements 1 and 2 that are in direct contact with the water can be filtered, thereby increasing the filtration area to some extent. Furthermore, the first filter element is made of activated carbon fiber material with added silver ions, and the second filter element is made of polypropylene material (PP) with added silver ions, which greatly enhances the overall antibacterial and dechlorination capabilities of the filter cartridges.

[0032] In addition, the first filter element 1 and the second filter element 2 can be independently selected from PP meltblown cloth and activated carbon fiber, respectively. Calcium sulfite and / or KDF55 can be further added to the hollow part as a third filter element, which can enhance the removal of heavy metals (such as lead, mercury, copper, iron, etc.), chlorine, hydrogen sulfide and other harmful substances in the water.

[0033] like Figure 3 As shown, the first connector 3 closes one end of the first filter body 1, and the second connector 4 has a through hole 5 communicating with the hollow structure of the first filter body 1. A water distributor 6 is provided on the first connector 3 to disperse the water flow and to effectively buffer the impact of large water flows on localized areas. The first connector 3 also has a positioning groove 7. Specifically, the water distributor 6 consists of protruding strips arranged in a ring matrix and evenly distributed around the positioning groove 7. Figure 4 Two structural diagrams of the water distributor are given.

[0034] In addition, the height of the second filter body 2 is not higher than that of the first filter body 1, which can ensure that the second filter body 2 has a sliding distance on the first filter body 1. The thickness of the second filter body 2 is not lower than that of the first filter body 1. The advantages of this setting are: 1) fully guaranteeing the filtration area; 2) buffering effect on large water flow; 3) preventing instantaneous clogging when the filtration volume is large.

[0035] A specific embodiment of this utility model also provides a faucet filter, such as... Figures 6-8 As shown, the faucet filter includes an inlet section 8 and an outlet section 9, with the aforementioned filter element installed inside the inlet section 8. In this embodiment, the inlet section 8 and the outlet section 9 are connected by conventional threads. In addition, conventional methods such as bayonet connection, pin connection, and key connection are also suitable for connecting the inlet section 8 and the outlet section 9 of this utility model.

[0036] Furthermore, one end of the water inlet 8 and one end of the water outlet 9 are detachably connected, and a sealing gasket is provided at the connection to enhance the sealing effect. The other end of the water inlet 8 is provided with a water inlet 10, and a water flow buffer 11 is provided inside the water inlet 10. In order to better observe the internal water intake, an observation window 12 is also provided on the water inlet 8.

[0037] A transparent partition 23 is provided at one end of the water outlet 9 connected to the water inlet 8. The transparent partition has a water inlet hole 24, which corresponds to the filter element through hole 5. The other end has a water outlet plate 13, which has several water outlet holes 14. Similarly, in order to better observe the internal water intake, the water outlet 9 can also be provided with an observation window.

[0038] Furthermore, the water flow damper 11 is connected to the first connector 3 of the first filter body 1. In order to better install the filter element in the faucet filter, the water flow damper 11 is provided with a positioning head 15, which matches the positioning slot 7 on the first connector 3.

[0039] like Figure 9 As shown, a water outlet control component 16 is provided inside the water outlet section 9. In this embodiment, the water outlet holes are arranged to form three water outlet modes, and the water outlet control component forms three different on / off positions according to the water outlet modes (e.g., Figure 10 (As shown).

[0040] Specifically, the water outlet control component 16 includes a mounting plate 17, on which a rotating shaft 18 and two water outlet holes 19 are provided. The rotating shaft 18 and the two water outlet holes 19 are distributed on both sides of the mounting plate 17. The rotating shaft 18 is rotatably connected to the water outlet control key 20. Specifically, the bottom of the water outlet control key 20 has a rotating shaft through hole with an environmentally friendly lubricating coating on the inner wall. The rotating shaft is inserted into the rotating shaft through hole. One side of the water outlet control key 20 has a sealing device 21 for opening and closing the water outlet holes 19. The bottom of the sealing device 21 has a protrusion that matches the water outlet holes 19, thus providing a sealing function. According to... Figure 10The three control modes are shown below. Pressing one side of the water outlet control key 20 activates the water outlet mode (displayed as "·" in Figure A), where water flows from the annularly distributed water outlet holes 14 on the water outlet plate 13. With the water outlet control key 20 in its original position (displayed as "circle + ·" in Figure B), all water outlet holes 14 on the water outlet plate 13 flow. Pressing the other side of the water outlet control key 20 (displayed as "circle" in Figure A) activates the water outlet hole 14 located at the center of the water outlet plate 13. The distribution of the water outlet holes 14 on the water outlet plate 13 is as follows: Figure 11 As shown.

[0041] The filter element of this utility model is applicable to a commercially available faucet filter, whose patent application number is CN2024306158526.

[0042] The effectiveness of the faucet filter was measured as follows:

[0043] I. Antibacterial properties

[0044] (1) Test basis: Appendix B of GB / T 21510-2008 "Test method for antibacterial properties of nano-inorganic materials".

[0045] (2) Sample pretreatment

[0046] 1) Take 1.0g ± 0.05g of the PP sample from the second filter body and put it into an Erlenmeyer flask. Add 95mL of PBS containing 0.1% Tween-80, mix well, and then add 5.0mL of the pre-prepared bacterial suspension.

[0047] 2) Fix the Erlenmeyer flask containing the bacterial suspension on the shaker of a constant temperature shaking incubator and shake at 150 r / min for 24 h at 37℃. After appropriate dilution, perform viable cell culture and counting.

[0048] (3) The test results are shown in Table 1:

[0049] Table 1. Results of antibacterial test

[0050]

[0051] Notes: 1. No bacterial growth was observed in the negative control group. 2. Antibacterial rate (%) = (Recovered bacteria count in control sample (cfu / mL) - Recovered bacteria count in test sample (cfu / mL)) / Recovered bacteria count in control sample (cfu / mL) × 100%.

[0052] The data in Table 1 show that the filter element of this invention has excellent antibacterial properties against Escherichia coli, Staphylococcus aureus, and Candida albicans.

[0053] II. Filtration Accuracy

[0054] (1) Inspection basis: GB / T 30307-2023 "Household and similar drinking water treatment devices".

[0055] (2) The water sample was tap water taken from Shenyang. The test results of the filtration accuracy of the faucet filter are shown in Table 2:

[0056] Table 2 Filtration accuracy test results

[0057] project Test particle size range Spiked raw water content mg / L Filtered water content (mg / L) Removal rate Filtration accuracy 0.5~1μm 2108 67 96.82％

[0058] The data in Table 2 shows that the faucet filter of this invention can effectively intercept tiny particles in tap water.

[0059] III. Free chlorine

[0060] (1) Test basis: "Household and similar general water quality purifiers" (QB / T 4143-2019) and "Standard test methods for drinking water" (GB / T5750-2023).

[0061] (2) Testing method: A continuous test was conducted for 6 months. Specifically, the faucet filter was circulated with water for 3 hours a day at a flow rate of 2L / min for 6 months. The chloride ion content in the faucet filter outlet water was then measured at 0 hours, 1 month, 2 months, 4 months, and 6 months after the water was circulated. The test location was Shenyang City. The results are shown in Table 3.

[0062] Table 3 Chloride ion content results

[0063]

[0064] Table 3 shows that after passing the spiked chlorinated raw water (2.11 mg / L) through the faucet filter, the free chlorine in the water decreased to 0.03 mg / L, achieving a removal rate of over 98%. The faucet filter maintained a chlorine removal capacity of over 51% after 4 months of continuous use, but this capacity decreased to approximately 16% after 6 months. Therefore, the faucet filter of this invention can be used continuously for at least 4 months, while commercially available faucet filters generally only last 1-3 months, essentially losing their chlorine removal capacity by the 3rd month. The faucet filter of this invention can extend its service life to over 4 months and also possesses excellent antibacterial, buffering, and filtration properties.

[0065] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A filter cartridge, characterized by The utility model relates to a filter element, and a water purifier comprising the filter element. The first filter element is a hollow structure, and the first and second joints are respectively arranged on the two sides of the first filter element.

2. The filter cartridge of claim 1, wherein, The first joint is arranged on the first filter element, and the second joint is arranged on the second filter element.

3. The filter cartridge of claim 2, wherein, The first joint is provided with a water distributor, and the water distributor is preferably a plurality of convex strips arranged in a matrix.

4. The filter cartridge of claim 3, wherein, The first joint is further provided with a positioning groove, and the convex strips are arranged in a ring matrix around the positioning groove.

5. The filter cartridge of any of claims 1-4, wherein, The height of the second filter element is not higher than that of the first filter element, and / or the thickness of the second filter element is not less than that of the first filter element.

6. A faucet filter characterized by, The water purifier comprises a water inlet part and a water outlet part, and the water inlet part is loaded with the filter element according to any one of claims 1-5.

7. The faucet filter of claim 6, wherein, One end of the water inlet part is detachably connected to one end of the water outlet part, and the connection is preferably provided with a sealing gasket.

8. The faucet filter of claim 7, wherein, The other end of the water inlet part is provided with a water inlet, and the water inlet is preferably provided with a water flow buffer.

9. The faucet filter of claim 8, wherein, The other end of the water outlet part is provided with a water outlet sheet, and a plurality of water outlet holes are arranged on the water outlet sheet.

10. The faucet filter of claim 9, wherein, The water flow buffer is in butt joint with the first joint of the first filter element, and the water flow buffer is preferably provided with a positioning head, and the first joint is provided with a positioning groove matched with the positioning head. The water outlet part is provided with a water outlet control assembly. The water outlet control assembly comprises a mounting disc, a rotating shaft and at least one water outlet hole. The rotating shaft is in rotating connection with a water outlet control key, and the water outlet control key is provided with a stopper on one side for opening and closing the water outlet hole. The bottom of the stopper is matched with the water outlet hole. The water outlet part is further provided with a limiter for limiting the rotating angle of the water outlet control key.

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