A chlorine removal filter assembly, filter cartridge and water purification apparatus

Abstract

The utility model provides a kind of chlorine removal filter assembly, comprising: the primary filter layer, copper-zinc alloy layer, partition layer, calcium sulfite layer and intercepting layer are sequentially arranged along the water flow direction;The intercepting layer is used to intercept calcium sulfite dissolved in water, and the primary filter layer and partition layer are used to intercept impurities in tap water.The utility model also provides a filter element, comprising a shell and a filter assembly arranged in the shell;The filter assembly is the chlorine removal filter assembly described above.The utility model also provides a kind of water purification equipment, equipped with the filter element described above.

Description

Technical Field

[0001] This utility model relates to water treatment, and more particularly to water purification equipment. Background Technology

[0002] Currently, the filter media used in basin faucets and shower system cartridges are often mismatched, resulting in high costs and many claimed effects failing to materialize, or even lacking any theoretical basis. The primary function of basin faucet and shower system cartridges is to remove residual chlorine and large particulate impurities from the water, protecting the skin. However, because residual chlorine is removed, bacteria can easily grow, and this problem needs to be mitigated through proper filter media selection.

[0003] Calcium sulfite has a good residual chlorine removal effect, but its lifespan is short; KDF has a longer residual chlorine removal effect, but its removal effect is not good.

[0004] Many filter cartridges contain activated carbon, which can lead to bacterial growth. Utility Model Content

[0005] The main technical problem to be solved by this utility model is to provide a chlorine removal filter assembly that can extend the life of the filter assembly while ensuring the chlorine removal effect.

[0006] To solve the above-mentioned technical problems, this utility model provides a chlorine removal filtration assembly, comprising: a primary filter layer, a copper-zinc alloy layer, a separator layer, a calcium sulfite layer and an interception layer arranged sequentially along the water flow direction;

[0007] The interception layer is used to intercept calcium sulfite dissolved in water, and the primary filtration layer and the separator layer are used to intercept impurities in tap water.

[0008] In a preferred embodiment, the volume ratio of the copper-zinc alloy layer to the calcium sulfite layer is 2:8-4:6.

[0009] In a preferred embodiment: the primary filter layer, the separator layer, and the interceptor layer are all made of PP cotton.

[0010] In a preferred embodiment: the PP cotton has a filtration accuracy of 10-15 micrometers and a thickness of 2-3 mm.

[0011] In a preferred embodiment, the ratio of copper to zinc in the copper-zinc alloy layer is 50:50.

[0012] This utility model also provides a filter element, including a housing and a filter assembly disposed within the housing; the filter assembly is a chlorine removal filter assembly as described above.

[0013] In a preferred embodiment: the outer shell includes an upper shell and a lower shell, and the upper shell and the lower shell are respectively provided with a water inlet and a water outlet.

[0014] In a preferred embodiment: the upper shell has an opening for the lower shell to be inserted, the inner wall of the opening is threadedly connected to the portion of the lower shell inserted into the upper shell, and a sealing element is provided between the inner wall of the opening and the portion of the lower shell inserted into the upper shell.

[0015] In a preferred embodiment: the outer wall of the lower shell tapers radially inward to form a stepped ring, and a clamping space for installing the filter replacement time reminder ring is formed between the end face of the opening and the stepped ring.

[0016] This utility model also provides a water purification device equipped with the filter element described above.

[0017] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0018] This invention provides a dechlorination filter assembly. A primary filter layer filters large particulate impurities in the water. A copper-zinc alloy layer and a calcium sulfite layer work together to remove residual chlorine. A separator layer separates and protects the copper-zinc alloy layer and the calcium sulfite layer, further removing large particulate impurities. An interception layer intercepts dissolved calcium sulfite, preventing white water. Because the copper-zinc alloy layer and the calcium sulfite layer work together to remove residual chlorine, this assembly combines the excellent dechlorination effect of calcium sulfite with the long service life of the copper-zinc alloy layer, extending the lifespan of the filter assembly while ensuring effective dechlorination. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the filter element in a preferred embodiment of the present invention;

[0020] Figure 2 This is an exploded view of the filter element in a preferred embodiment of the present invention;

[0021] Figure 3 This is a cross-sectional view of the filter element in a preferred embodiment of the present invention;

[0022] Figure 4 This image shows the result of testing whether the water output from the filter element in a preferred embodiment of this utility model turns white. Detailed Implementation

[0023] To make the technical solution and features of this utility model clearer, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific examples. It should be understood that these examples are only for illustrating this utility model and are not intended to limit the scope of this utility model. After reading this utility model, any modifications of this utility model by those skilled in the art in various equivalent forms fall within the scope defined by the appended claims.

[0024] refer to Figures 1-3This embodiment provides a filter element, including a housing and a filter assembly disposed within the housing; the filter assembly is a chlorine removal filter assembly.

[0025] The dechlorination filtration assembly includes: a primary filter layer 1, a copper-zinc alloy layer 2, a separator layer 3, a calcium sulfite layer 4, and an interception layer 5 arranged sequentially along the water flow direction; the interception layer 5 is used to intercept calcium sulfite dissolved in the water, and the primary filter layer 1 and the separator layer 3 are used to intercept impurities in the tap water.

[0026] The aforementioned dechlorination filter assembly comprises a primary filter layer 1 for filtering large particulate impurities in the water, a copper-zinc alloy layer 2 and a calcium sulfite layer 4 for removing residual chlorine, a separator layer 3 for separating and protecting the copper-zinc alloy layer 2 and the calcium sulfite layer 4 and for further removing large particulate impurities, and an interception layer 5 for intercepting dissolved calcium sulfite, preventing white water and clogging of downstream water supply devices. Because the copper-zinc alloy layer 2 and the calcium sulfite layer 4 work together to remove residual chlorine, the assembly combines the advantages of high dechlorination efficiency of calcium sulfite with the long service life of the copper-zinc alloy layer 2, extending the lifespan of the filter assembly while ensuring effective dechlorination.

[0027] In this embodiment, the primary filter layer 1, the separator layer 3, and the interception layer 5 are all made of PP cotton, whose main component is polypropylene. The filtration accuracy is 10-15 microns, which can intercept large particulate impurities in tap water. On the one hand, it provides cleaner water for washing. On the other hand, the separator layer 3 can also protect the calcium sulfite behind it from contamination, ensuring its filtration effect and service life. The interception layer 5 can prevent dissolved calcium sulfite from clogging the shower head and affecting the user experience.

[0028] The copper-zinc alloy layer 2 has a copper to zinc ratio of 50:50 and a mesh size of 10-40. The copper-zinc alloy layer 2 operates on the principle of electrochemical oxidation-reduction (electron transfer) to remove residual chlorine. The chemical reaction equation for its removal of residual chlorine is as follows:

[0029] Zn + ClO- + H2O + 2e- = Zn 2+ +Cl - +2OH -

[0030] Furthermore, the copper-zinc alloy layer 2 changes its redox potential by varying the redox potential. When water passes through the copper-zinc alloy layer 2, its redox potential changes from +200mV to -500mV. Under normal circumstances, various types of microorganisms can only grow under specific redox potentials. Therefore, the large change in potential can destroy bacterial cells, thereby controlling the growth of microorganisms.

[0031] The calcium sulfite layer 4 has reducing properties and undergoes a redox reaction with residual chlorine in tap water, which can efficiently and rapidly degrade residual chlorine in tap water. The chemical reaction equation is as follows:

[0032] CaSO3+ClO - =CaSO4 + Cl-

[0033] To ensure effective chlorine removal while extending the lifespan of the filter components, the volume ratio of the copper-zinc alloy layer 2 to the calcium sulfite layer 4 in this embodiment is 2:8-4:6.

[0034] In this embodiment, the outer shell includes an upper shell 6 and a lower shell 7, with an inlet 61 and an outlet 71 respectively provided on the upper shell 6 and the lower shell 7. This forms a water flow channel along the height direction of the outer shell, allowing water to flow through each filter media in a direction perpendicular to each filter media layer, thereby ensuring that the water can pass through each filter media layer in sequence.

[0035] To connect the upper shell 6 and the lower shell 7, the upper shell 6 has an opening 62 for the lower shell 7 to be inserted. The inner wall of the opening 62 is threadedly connected to the portion of the lower shell 7 inserted into the upper shell 6, and a sealing element 8 is provided between the inner wall of the opening 62 and the portion of the lower shell 7 inserted into the upper shell 6. The sealing element 8 serves to stop water leakage and prevent water from leaking out of the filter element.

[0036] Furthermore, to conveniently remind users when to replace the filter cartridge, the outer wall of the lower shell 7 tapers radially inward to form a stepped ring. A clamping space for the filter cartridge replacement time reminder ring 9 is formed between the end face of the opening 62 and the stepped ring. The filter cartridge reminder ring is marked with numbers 1-12, corresponding to January to December. For example, if the filter cartridge has a lifespan of 6 months, and the user replaces the filter cartridge in January, the filter cartridge reminder ring 9 needs to be rotated inward until the number 7 aligns with the indicator 72 on the lower shell 7, thus reminding the user that a new filter cartridge needs to be replaced in July.

[0037] The dechlorination efficiency of the above filter elements was tested, as shown in the table below:

[0038]

[0039] As can be seen, the residual chlorine removal rate did not decrease significantly when the flow rate reached 10,000L. Furthermore, the residual chlorine removal rate remained at a relatively high level throughout the flow rate from 0 to 10,000L, demonstrating that the filter cartridge significantly increased its lifespan while ensuring a high residual chlorine removal rate. Compared to filter cartridges with only the copper-zinc alloy layer 2, which only achieve a residual chlorine removal rate of around 50%, and filter cartridges using only the calcium sulfite layer 4, which have a lifespan of only around 4,000L, the filter cartridge in this embodiment significantly improves both the residual chlorine removal rate and its service life.

[0040] To test whether the first glass of water used the filter cartridge turns white the next day, let it sit overnight. Specifically, leave the filter cartridge unused overnight, and collect 500ml of filtered water for the first time the next day. Observe the water to determine if there are any signs of whitening. The test results are as follows: Figure 4 As shown, a total of six sampling observations were conducted, and no whitening phenomenon was observed. Therefore, the interception layer 5 in the filter element can intercept calcium sulfite dissolved in the water, thus preventing the white water phenomenon.

[0041] The aforementioned filter cartridges can be used in various water purification devices, which can be stand-alone devices, either countertop or under-counter, or devices installed on water outlets, such as the faucet outlet or inside the shower head.

[0042] The above is only one specific embodiment of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantial modifications made to the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.

Claims

1. A chlorine removal filter assembly, characterized in that... include: The primary filter layer, copper-zinc alloy layer, separator layer, calcium sulfite layer, and interception layer are arranged sequentially along the water flow direction. The interception layer is used to intercept calcium sulfite dissolved in water, and the primary filtration layer and the separator layer are used to intercept impurities in tap water.

2. The chlorine removal filter assembly according to claim 1, characterized in that: The volume ratio of the copper-zinc alloy layer to the calcium sulfite layer is 2:8-4:

6.

3. The chlorine removal filter assembly according to claim 1, characterized in that: The primary filter layer, the separator layer, and the interception layer are all made of PP cotton.

4. A chlorine removal filter assembly according to claim 3, characterized in that: The PP cotton has a filtration accuracy of 10-15 microns and a thickness of 2-3 mm.

5. A chlorine removal filter assembly according to claim 1, characterized in that: The ratio of copper to zinc in the copper-zinc alloy layer is 50:

50.

6. A filter element, characterized in that... It includes a housing and a filter assembly disposed within the housing; the filter assembly is the chlorine removal filter assembly according to any one of claims 1-5.

7. A filter element according to claim 6, characterized in that: The outer shell includes an upper shell and a lower shell, and the upper shell and the lower shell are respectively provided with a water inlet and a water outlet.

8. A filter element according to claim 7, characterized in that: The upper shell has an opening for the lower shell to be inserted into. The inner wall of the opening is threadedly connected to the portion of the lower shell inserted into the upper shell, and a sealing element is provided between the inner wall of the opening and the portion of the lower shell inserted into the upper shell.

9. A filter element according to claim 8, characterized in that: The outer wall of the lower shell tapers radially inward to form a stepped ring, and a clamping space for installing the filter replacement time reminder ring is formed between the end face of the opening and the stepped ring.

10. A water purification device, characterized in that... The filter element is assembled with any one of claims 6-9.

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