Composite filter element

Abstract

The invention relates to a composite filter element, which comprises an inner-layer tubular carbon rod for filtering heavy metals in raw water to generate purified water and defining a water outlet pipeline; the outer-layer tubular carbon rod is used for filtering chlorine in the raw water and is spaced from the inner-layer tubular carbon rod; the first end cover is used for limiting one end of the inner-layer tubular carbon rod and one end of the outer-layer tubular carbon rod; the second end cover is separated from the first end cover, limits the other end of the inner-layer tubular carbon rod and the other end of the outer-layer tubular carbon rod, is provided with a water outlet communicated with the water outlet pipeline, and defines a resin particle accommodating space together with the inner-layer tubular carbon rod, the outer-layer tubular carbon rod and the first end cover; and a plurality of resin particles accommodated in the resin particle accommodating space and used for softening the water quality of the raw water. The composite filter element is small in occupied volume, low in cost, simple in filter element replacement and good in user experience.

Description

Technical Field

[0001] This invention relates to a filter element, and more particularly to a composite filter element. Background Technology

[0002] Currently, most water purifiers on the market use filter cartridges filled with a single type of filter media. Therefore, to achieve the filtration effect of multiple filter media, multiple cartridges need to be connected in series. Each cartridge requires a mounting bracket to secure it, and each cartridge must be replaced and maintained individually. This not only takes up a lot of space and is costly, but also makes filter replacement cumbersome and severely impacts the user experience. Therefore, it is necessary to find a solution. Summary of the Invention

[0003] The purpose of this invention is to provide a composite filter element.

[0004] Therefore, the composite filter element of the present invention comprises: an inner tubular carbon rod for filtering out heavy metals in the raw water to produce purified water, and defining an outlet pipe for outputting the purified water; an outer tubular carbon rod for filtering out chlorine in the raw water, and concentrically spaced from the inner tubular carbon rod; a first end cap for limiting one end of the inner tubular carbon rod and one end of the outer tubular carbon rod, and sealing the outlet pipe; a second end cap spaced from the first end cap, limiting the other end of the inner tubular carbon rod and the other end of the outer tubular carbon rod, and having an outlet connected to the outlet pipe, and together with the inner tubular carbon rod, the outer tubular carbon rod, and the first end cap, defining a resin particle accommodating space; and several resin particles, accommodated in the resin particle accommodating space, and used to soften the water quality of the raw water.

[0005] In the composite filter element of the present invention, the heavy metal filtered out by the inner tubular carbon rod is at least one of lead ions and mercury ions.

[0006] The composite filter element of the present invention has an inner tubular carbon rod with a pore size of 0.5 to 5 μm.

[0007] The composite filter element of this invention has an outer tubular carbon rod with a pore size of 5 to 30 μm.

[0008] The composite filter element of the present invention includes a first end cap comprising a circular plate that limits the outer tubular carbon rod and the inner tubular carbon rod, a first limiting ring extending from the periphery of the circular plate toward the second end cap and limiting the outer annular surface of the outer tubular carbon rod, a second limiting ring extending from the periphery of the circular plate toward the second end cap and limiting the inner annular surface of the outer tubular carbon rod, and a third limiting ring extending from the periphery of the circular plate toward the second end cap and limiting the outer annular surface of the inner tubular carbon rod.

[0009] The composite filter element of the present invention includes a second end cap comprising an annular plate that limits the outer tubular carbon rod and the inner tubular carbon rod and defines the outlet, a fourth limiting ring that extends from the periphery of the annular plate toward the first end cap and limits the outer annular surface of the outer tubular carbon rod, a fifth limiting ring that extends from the periphery of the annular plate toward the first end cap and limits the inner annular surface of the outer tubular carbon rod, and a sixth limiting ring that extends from the periphery of the annular plate toward the first end cap and limits the outer annular surface of the inner tubular carbon rod.

[0010] The present invention relates to a composite filter element in which the resin particles utilize weak acid cations to soften the raw water.

[0011] The present invention relates to a composite filter element, which further comprises a filter cloth covering the outer annular surface of the outer tubular carbon rod and spaced apart from the first end cap and the second end cap, and used for filtering large particulate impurities in the raw water.

[0012] The composite filter element of the present invention has a filter cloth with a pore size of 15 to 50 μm.

[0013] The present invention relates to a composite filter element, which further comprises a shell containing the inner tubular carbon rod, the outer tubular carbon rod, the first end cap, the second end cap, the resin particles, and the filter cloth. The shell is provided with an inlet hole for inputting raw water so that the raw water can seep into the filter cloth, and an outlet hole connected to the outlet of the second end cap.

[0014] The beneficial effects of the present invention are as follows: the composite filter element occupies a small volume, has low cost, and is easy to replace, providing a good user experience. Moreover, the inner tubular carbon rod can be used to filter out heavy metals in the raw water, the resin particles can be used to soften the water quality of the raw water, and the outer tubular carbon rod can be used to filter out chlorine in the raw water. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view illustrating an embodiment of the composite filter element of the present invention;

[0016] Figure 2 This is a cross-sectional view from another direction, illustrating the described embodiment. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] See Figures 1 to 2 The embodiment of the composite filter element of the present invention is suitable for filtering raw water 9 (such as tap water) into purified water 8, and includes a shell 7, a filter cloth 6, an outer tubular carbon rod 4, several resin particles 5, an inner tubular carbon rod 3, a first end cap 1, and a second end cap 2.

[0019] In this embodiment, the outer shell 7 houses the filter cloth 6, the outer tubular carbon rod 4, the resin particles 5, the inner tubular carbon rod 3, the first end cap 1, and the second end cap 2.

[0020] In this embodiment, the filter cloth 6 covers the outer circumference of the outer tubular carbon rod 4 and is spaced apart from the first end cap 1 and the second end cap 2, and is used to filter large particulate impurities (such as silt) in the raw water 9 in the first filtration stage. In this embodiment, the pore size of the filter cloth 6 is 15 to 50 μm.

[0021] The outer tubular carbon rod 4 is used in the second filtration stage to remove chlorine from the raw water 9. In this embodiment, the pore size of the outer tubular carbon rod 4 is 5 to 30 μm.

[0022] The resin particles 5 are used to soften the raw water 9 in the third filtration stage. In this embodiment, the resin particles 5 utilize weak acid cations to soften the raw water 9.

[0023] The inner tubular carbon rod 3 is used in the fourth filtration stage to filter out heavy metals from the raw water 9 to produce purified water 8. It is concentrically spaced from the outer tubular carbon rod 4 and defines the outlet pipe 30 for outputting the purified water 8. The heavy metals filtered out by the inner tubular carbon rod 3 are at least one of lead ions and mercury ions. In this embodiment, the pore size of the inner tubular carbon rod 3 is 0.5 to 5 μm.

[0024] The first end cap 1 limits one end of the inner tubular carbon rod 3 and one end of the outer tubular carbon rod 4, and seals the water outlet pipe 30. In this embodiment, the first end cap 1 includes a circular plate 10 that limits the outer tubular carbon rod 4 and the inner tubular carbon rod 3, a first limiting ring 11 that extends from the periphery of the circular plate 10 toward the second end cap 2 and limits the outer ring surface of the outer tubular carbon rod 4, a second limiting ring 12 that extends from the periphery of the circular plate 10 toward the second end cap 2 and limits the inner ring surface of the outer tubular carbon rod 4, and a third limiting ring 13 that extends from the periphery of the circular plate 10 toward the second end cap 2 and limits the outer ring surface of the inner tubular carbon rod 3.

[0025] The second end cap 2 is spaced apart from the first end cap 1 and limits the other end of the inner tubular carbon rod 3 and the other end of the outer tubular carbon rod 4. It is provided with an outlet 29 connected to the water outlet pipe 30, and together with the inner tubular carbon rod 3, the outer tubular carbon rod 4 and the first end cap 1, it defines the resin particle accommodating space 50 for accommodating the resin particles 5. In this embodiment, the second end cap 2 includes an annular plate 20 that limits the outer tubular carbon rod 4 and the inner tubular carbon rod 3 and defines the outlet 29; a fourth limiting ring 24 that extends from the periphery of the annular plate 20 toward the first end cap 1 and limits the outer annular surface of the outer tubular carbon rod 4; a fifth limiting ring 25 that extends from the periphery of the annular plate 20 toward the first end cap 1 and limits the inner annular surface of the outer tubular carbon rod 4; and a sixth limiting ring 26 that extends from the periphery of the annular plate 20 toward the first end cap 1 and limits the outer annular surface of the inner tubular carbon rod 3.

[0026] It should be noted that, in this embodiment, the resin particles 5 do not completely fill the resin particle accommodating space 50, but rather... Figure 1 As shown, a small section of the upper space in the resin particle accommodating space 50 is reserved as a space for the resin particles 5 to flow.

[0027] In this embodiment, the outer casing 7 is provided with an inlet hole 71 for inputting the raw water 9 so that the raw water 9 can seep into the filter cloth 6, and an outlet hole 72 connected to the outlet 29 of the second end cap 2.

[0028] Therefore, the process of filtering the raw water 9 using the composite filter element of the present invention is roughly as follows: First, in the first filtration stage, the raw water 9 is filtered through the filter cloth 6 to remove large particulate impurities (such as silt). Next, in the second filtration stage, the raw water 9 passes through the outer tubular carbon rod 4 to remove chlorine. Next, in the third filtration stage, the raw water 9 passes through the resin particles 5 to soften the water. Finally, in the fourth filtration stage, the inner tubular carbon rod 3 is used to remove heavy metals from the raw water 9, resulting in purified water 8 flowing out through the outlet pipe 30, thus completing the entire filtration process.

[0029] In summary, the present invention has at least the following advantages and effects: (1) The composite filter element can filter out heavy metals in the raw water 9 using the inner tubular carbon rod 3, soften the water quality of the raw water 9 using the resin particles 5, and filter out chlorine in the raw water 9 using the outer tubular carbon rod 4; (2) In the first filtration stage, the composite filter element can filter out large particulate impurities (such as silt) in the raw water 9 using the filter cloth 6; (3) The first limiting ring 11 of the first end cap 1 can limit the outer ring surface of the outer tubular carbon rod 4; (4) (5) The second limiting ring 12 of the first end cap 1 can limit the inner ring surface of the outer tubular carbon rod 4; (6) The third limiting ring 13 of the first end cap 1 can limit the outer ring surface of the inner tubular carbon rod 3; (7) The fourth limiting ring 24 of the second end cap 2 can limit the outer ring surface of the outer tubular carbon rod 4; (8) The fifth limiting ring 25 of the second end cap 2 can limit the inner ring surface of the outer tubular carbon rod 4; (9) The sixth limiting ring 26 of the second end cap 2 can limit the outer ring surface of the inner tubular carbon rod 3, so the purpose of the present invention can indeed be achieved.

Claims

1. A composite filter element, characterized in that, Include: The inner tubular carbon rod is used to filter out heavy metals in the raw water to produce purified water and defines the outlet pipe for outputting the purified water. The outer tubular carbon rod is used to filter out chlorine from the raw water and is concentrically spaced from the inner tubular carbon rod. The first end cap limits one end of the inner tubular carbon rod and one end of the outer tubular carbon rod, and seals the water outlet pipe. The second end cap, spaced apart from the first end cap, limits the other end of the inner tubular carbon rod and the other end of the outer tubular carbon rod, and has an outlet connected to the water outlet pipe. Together with the inner tubular carbon rod, the outer tubular carbon rod, and the first end cap, it defines a space for accommodating resin particles. Several resin particles are contained in the resin particle accommodating space and are used to soften the raw water.

2. The composite filter element according to claim 1, characterized in that: The heavy metal filtered out by the inner tubular carbon rod is at least one of lead ions and mercury ions.

3. The composite filter element according to claim 1, characterized in that: The inner tubular carbon rod has a pore size of 0.5 to 5 μm.

4. The composite filter element according to claim 1, characterized in that: The outer tubular carbon rod has a pore size of 5 to 30 μm.

5. The composite filter element according to claim 1, characterized in that: The first end cap includes a circular plate that limits the outer tubular carbon rod and the inner tubular carbon rod, a first limiting ring that extends from the periphery of the circular plate toward the second end cap and limits the outer annular surface of the outer tubular carbon rod, a second limiting ring that extends from the periphery of the circular plate toward the second end cap and limits the inner annular surface of the outer tubular carbon rod, and a third limiting ring that extends from the periphery of the circular plate toward the second end cap and limits the outer annular surface of the inner tubular carbon rod.

6. The composite filter element according to claim 1, characterized in that: The second end cap includes an annular plate that limits the outer tubular carbon rod and the inner tubular carbon rod and defines the outlet; a fourth limiting ring that extends from the periphery of the annular plate toward the first end cap and limits the outer annular surface of the outer tubular carbon rod; a fifth limiting ring that extends from the periphery of the annular plate toward the first end cap and limits the inner annular surface of the outer tubular carbon rod; and a sixth limiting ring that extends from the periphery of the annular plate toward the first end cap and limits the outer annular surface of the inner tubular carbon rod.

7. The composite filter element according to claim 1, characterized in that: The resin particles utilize weak acid cations to soften the raw water.

8. The composite filter element according to claim 1, characterized in that: The composite filter element also includes a filter cloth that covers the outer ring surface of the outer tubular carbon rod and is spaced apart from the first end cap and the second end cap, and is used to filter large particulate impurities in the raw water.

9. The composite filter element according to claim 8, characterized in that: The filter cloth has a pore size of 15 to 50 μm.

10. The composite filter element according to claim 8, characterized in that: The composite filter element further includes a shell that houses the inner tubular carbon rod, the outer tubular carbon rod, the first end cap, the second end cap, the resin particles, and the filter cloth. The shell is provided with an inlet hole for inputting the raw water so that the raw water can seep into the filter cloth, and an outlet hole that communicates with the outlet of the second end cap.

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