Composite filter element and water purifier

Abstract

The present invention discloses a composite filter element and a water purifier, wherein the composite filter element comprises a housing component and an osmotic filter component; the housing component is formed with an installation cavity; the osmotic filter component is installed in the installation cavity, the osmotic filter component comprises a first water purification component, a second water purification component, a first end cover component and a second end cover component, the first end cover component is formed with a first accommodation cavity for accommodating the first water purification component to form a first filtration area; the first end cover component is concavely provided with an installation groove connected with the first accommodation cavity, the second end cover component is arranged in the installation groove and is formed with a second accommodation cavity for accommodating the second water purification component to form a second filtration area. The present invention improves the structure of the filter element, improves the water purification effect of the composite filter element, and also improves the space utilization rate and reduces the overall volume.

Description

Technical Field

[0001] The present invention relates to the technical field of filter elements, and in particular to a composite filter element and a water purifier. Background Art

[0002] Reverse Osmosis (RO) is an artificial semipermeable membrane with certain characteristics made by simulating biological semipermeable membranes. It is the core component of reverse osmosis technology. The principle of reverse osmosis technology is to separate these substances and water under the action of a pressure higher than the osmotic pressure of the solution, based on the fact that other substances cannot pass through the semipermeable membrane. The pore size of the reverse osmosis membrane is very small, so it can effectively remove dissolved salts, colloids, microorganisms, organic matter, etc. in water. The reverse osmosis water purification system has the advantages of good water quality, low energy consumption, no pollution, simple process, and easy operation.

[0003] Reverse osmosis membranes are widely used in composite filter elements. The existing composite filter elements have two types of water purification filters, carbon rods and polyaluminum chloride (PAC), in the osmotic filtration components. The separation of carbon rods and polyaluminum chloride is unreasonable, the overall space occupancy is large, and the space utilization rate of the filter element is low. Summary of the invention

[0004] The main purpose of the present invention is to provide a composite filter element, aiming to improve the space utilization of the composite filter element and reduce the overall volume.

[0005] To achieve the above object, the present invention provides a composite filter element, which comprises:

[0006] a housing assembly forming a mounting cavity; and

[0007] An osmotic filtration assembly is installed in the installation cavity, and the osmotic filtration assembly includes a first water purification component, a second water purification component, a first end cover assembly and a second end cover assembly. The first end cover assembly is formed with a first accommodating cavity for accommodating the first water purification component to form a first filtration area; the first end cover assembly is recessed with an installation groove connected to the first accommodating cavity, and the second end cover assembly is arranged in the installation groove and is formed with a second accommodating cavity for accommodating the second water purification component to form a second filtration area.

[0008] In one embodiment, the shell assembly includes a filter bottle body and a filter bottle cover disposed on the filter bottle body, the filter bottle cover is provided with a raw water inlet, a concentrate water discharge port and a pure water outlet, the raw water inlet is connected to the first filter area, the concentrate water discharge port is connected to the first filter area, and the pure water outlet is connected to the second filter area.

[0009] In one embodiment, the first water purification component includes a central tube and a filter membrane element wound on the central tube, the filter membrane element forms the first filter area, the central tube extends from the first filter area of ​​the first end cover assembly through the bottom wall of the second end cover assembly into the second filter area and is connected to the pure water outlet through the second water purification component.

[0010] In one embodiment, the filtration membrane element comprises a nanofiltration membrane, a reverse osmosis membrane and a waterproof membrane, wherein the nanofiltration membrane and the reverse osmosis membrane are respectively wound on the outer walls of the central tube on both sides opposite to each other and separated by the waterproof membrane;

[0011] The waterproof membrane is used to separate the reverse osmosis membrane and the nanofiltration membrane to prevent the nanofiltration water filtered through the nanofiltration membrane from entering the reverse osmosis membrane and to prevent the filtered water passed through the reverse osmosis membrane from entering the nanofiltration membrane.

[0012] In one embodiment, the central tube includes a first half tube and a second half tube connected and fixed to the first half tube, the nanofiltration membrane is arranged on the first half tube, the reverse osmosis membrane is arranged on the second half tube, and the waterproof membrane is arranged between the nanofiltration membrane and the reverse osmosis membrane to separate the nanofiltration water filtered through the nanofiltration membrane and the filtered water passed through the reverse osmosis membrane.

[0013] In one embodiment, the first water purification component is a polyaluminium chloride filter element; the filter membrane element further comprises a polypropylene outer layer and a polyaluminium chloride middle layer;

[0014] The nanofiltration membrane / the reverse osmosis membrane, the polyaluminium chloride middle layer and the polypropylene outer layer are sequentially wound from the inside to the outside on the central tube.

[0015] In one embodiment, the second water purification component is a carbon rod filter element.

[0016] In one embodiment, the first water purification component and the first end cover assembly are sealed by hot melt adhesive; the second water purification component and the second end cover assembly are sealed by hot melt adhesive.

[0017] In one embodiment, the filter bottle body and the first end cap assembly are sealed connected via a first seal; the filter bottle body and the second end cap assembly are sealed connected via a second seal; and the first end cap assembly and the second end cap assembly are sealed connected via a third seal.

[0018] In order to achieve the above object, the present invention further provides a water purifier, the water purifier comprising the composite filter element as described above, the composite filter element comprising:

[0019] The composite filter element comprises:

[0020] a housing assembly forming a mounting cavity; and

[0021] An osmotic filtration assembly is installed in the installation cavity, and the osmotic filtration assembly includes a first water purification component, a second water purification component, a first end cover assembly and a second end cover assembly. The first end cover assembly is formed with a first accommodating cavity for accommodating the first water purification component to form a first filtration area; the first end cover assembly is recessed with an installation groove connected to the first accommodating cavity, and the second end cover assembly is arranged in the installation groove and is formed with a second accommodating cavity for accommodating the second water purification component to form a second filtration area.

[0022] In the technical solution of the present invention, since the composite filter element includes a shell component and an osmotic filter component, the shell component forms an installation cavity, the osmotic filter component is installed in the installation cavity, the osmotic filter component includes a first water purification component, a second water purification component, a first end cover component and a second end cover component, the first end cover component forms a first accommodating cavity for accommodating the first water purification component to form a first filtration area; the first end cover component is recessed with an installation groove connected to the first accommodating cavity, the second end cover component is arranged in the installation groove and forms a second accommodating cavity for accommodating the second water purification component to form a second filtration area, so that the overall structure of the composite filter element is relatively compact, the space utilization of the composite filter element is improved, and the overall volume is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of an embodiment of a composite filter element of the present invention;

[0025] Figure 2 An exploded view of an embodiment of a composite filter element of the present invention;

[0026] Figure 3 It is a cross-sectional view of an embodiment of a composite filter element of the present invention.

[0027] Description of Figure Numbers:

[0028]

[0029]

[0030] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] Reverse Osmosis (RO) is an artificial semipermeable membrane with certain characteristics made by simulating biological semipermeable membranes. It is the core component of reverse osmosis technology. The principle of reverse osmosis technology is to separate these substances and water under the action of a pressure higher than the osmotic pressure of the solution, based on the fact that other substances cannot pass through the semipermeable membrane. The pore size of the reverse osmosis membrane is very small, so it can effectively remove dissolved salts, colloids, microorganisms, organic matter, etc. in water. The reverse osmosis water purification system has the advantages of good water quality, low energy consumption, no pollution, simple process, and easy operation.

[0035] Reverse osmosis membranes are widely used in composite filter elements. In an exemplary technology, the osmotic filtration component of the composite filter element includes two water purification filter elements: a carbon rod and polyaluminum chloride (PAC). The separation between the carbon rod and polyaluminum chloride is unreasonable, the overall space occupancy is large, and the space utilization rate of the filter element is low.

[0036] In order to improve the space utilization of the composite filter element and reduce the overall volume, the present invention provides a composite filter element suitable for various water purification devices, which are not limited here.

[0037] Reference Figures 1 to 3 In one embodiment of the present invention, the composite filter element includes a shell component 100 and an osmotic filter component 200; the shell component 100 is formed with an installation cavity; the osmotic filter component 200 is installed in the installation cavity, and the osmotic filter component 200 includes a first water purification component 210, a second water purification component 220, a first end cover component 230 and a second end cover component 240, the first end cover component 230 is formed with a first accommodating cavity for accommodating the first water purification component 210 to form a first filtering area 200a; the first end cover component 230 is recessed with an installation groove 230a connected to the first accommodating cavity, and the second end cover component 240 is arranged in the installation groove 230a and is formed with a second accommodating cavity for accommodating the second water purification component 220 to form a second filtering area 200b.

[0038] In this embodiment, the housing assembly 100 of the composite filter element may include a filter bottle body 110 and a filter bottle cover 120 covered on the filter bottle body 110, and the filter bottle cover 120 is provided with a raw water inlet 100a, a concentrated water discharge port 100b and a pure water outlet 100c, the raw water inlet 100a may be connected to the first filter area 200a, the concentrated water discharge port 100b may be connected to the first filter area 200a and the second filter area 200b, and the pure water outlet 100c may be connected to the second filter area 200b. The filter bottle cover 120 may be provided with a plurality of faucets to form the raw water inlet 100a, the concentrated water discharge port 100b and the pure water outlet 100c, and a solenoid valve may be provided at the faucet corresponding to the raw water inlet 100a, and a booster pump may be provided to pump raw water into the first filter area 200a inside the composite filter element.

[0039] It should be noted that the first water purification component 210 can be a filter element formed by water purification materials such as polyaluminum chloride, polypropylene, polyaluminum chloride iron, etc., and the second water purification component 220 can be a filter element such as an activated carbon rod. Here, the specific materials of the first water purification component 210 and the second water purification component 220 are not limited.

[0040] Among them, the polyaluminium chloride filter element can effectively filter out rust, silt in tap water, adsorb different colors, odors, residual chlorine and some organic matter in water, ensure the water quality entering the filter element, and thus extend the life of the filter element. The first water purification part 210 can be a first filter element layer, a second filter element layer and a third filter element layer arranged from the outside to the inside, wherein the first filter element layer can be a polypropylene (PP) non-woven fabric winding layer, and the filtration accuracy of the polypropylene non-woven fabric winding layer can be 5um to ensure the filtration effect; the second filter element layer can be a polyaluminium chloride middle layer; the third filter element layer can be a nanofiltration membrane or a reverse osmosis membrane winding layer. In the actual application process, the thickness of the filter element layer can be set according to the region and different water quality, so as to better meet the user's demand for purified water quality. Among them, the reverse osmosis membrane filter element layer can be wound on the central tube 211 using a multi-membrane page winding process with the polyaluminium chloride filter element layer and the polypropylene filter element layer.

[0041] The first end cap assembly 230 may be composed of a plurality of hollow cylindrical shells, the tube diameter of the shell near the bottom of the filter bottle body 110 may be smaller than the tube diameter of the shell far from the bottom of the filter bottle body 110, and the above-mentioned first accommodating cavity is formed between the shell near the bottom of the filter bottle body 110 and the shell far from the bottom of the filter bottle body 110 for the installation of the first water purification component 210, the shell located on the upper side may be sealed and connected to the filter bottle cover 120, and the second end cap assembly 240 may be installed in the shell located on the upper side.

[0042] The second end cover assembly 240 may also be composed of a plurality of hollow cylindrical shells to form a second accommodating chamber for installing the second water purification component 220. The lower shell of the second end cover assembly 240 may be provided with a connecting port to connect with the first accommodating chamber, and the upper shell of the second end cover assembly 240 may be sealed and connected to the filter bottle cover 120.

[0043] Among them, a raw water inlet channel can be formed between the outer wall of the lower shell of the second end cover assembly 240 and the inner wall of the upper shell of the first end cover assembly 230 and connected to the raw water inlet port 100a, a concentrated water drainage channel can be formed between the inner wall of the second end cover assembly 240 and the outer wall of the second water purification component 220 and connected to the concentrated water drainage port 100b, and a pure water outlet channel can be formed in the middle part of the second water purification component 220 and connected to the pure water outlet port 100c.

[0044] In this embodiment, preferably, the main reference Figure 3 The first end cover assembly 230 may include a first end cover 231 and a second end cover 232 covered in the first end cover 231, and the second end cover assembly 240 may include a third end cover 241 and a fourth end cover 242 covered on the third end cover 241. Such an arrangement not only facilitates assembly, but also maximizes the space utilization of the composite filter element.

[0045] It can be understood that the present invention forms an installation cavity in the shell component 100 of the composite filter element, and the osmotic filter component 200 is installed in the installation cavity. The osmotic filter component 200 includes a first water purification component 210, a second water purification component 220, a first end cover component 230 and a second end cover component 240. The first end cover component 230 forms a first accommodating cavity for accommodating the first water purification component 210 to form a first filtration area 200a; the first end cover component 230 is recessed with a mounting groove 230a connected to the first accommodating cavity, and the second end cover component 240 is arranged in the mounting groove 230a and forms a second accommodating cavity for accommodating the second water purification component 220 to form a second filtration area 200b, so that the overall structure of the composite filter element is relatively compact, the space utilization of the composite filter element is improved, and the overall volume is reduced.

[0046] Main references Figure 2 and Figure 3 In order to achieve better water purification effect while minimizing the overall volume of the composite filter element, in one embodiment, the first water purification component 210 includes a central tube 211 and a filter membrane element 212 wound on the central tube 211, the filter membrane element 212 forms a first filter area 200a, and the central tube 211 extends from the first filter area 200a of the first end cover assembly 230 through the bottom wall of the second end cover assembly 240 into the second filter area 200b and is connected to the pure water outlet 100c through the second water purification component 220.

[0047] In this embodiment, the filtration membrane element 212 may include a nanofiltration membrane, a reverse osmosis membrane and a waterproof membrane. The nanofiltration membrane and the reverse osmosis membrane are respectively wound on the opposite outer walls of the central tube 211 and separated by the waterproof membrane; the waterproof membrane is used to separate the reverse osmosis membrane and the nanofiltration membrane to prevent the nanofiltration water filtered through the nanofiltration membrane from entering the reverse osmosis membrane and to prevent the filtered water passing through the reverse osmosis membrane from entering the nanofiltration membrane.

[0048] Furthermore, the central tube 211 may include a first half tube and a second half tube connected and fixed to the first half tube, the nanofiltration membrane is arranged on the first half tube, the reverse osmosis membrane is arranged on the second half tube, and the waterproof membrane is arranged between the nanofiltration membrane and the reverse osmosis membrane to separate the nanofiltration water filtered by the nanofiltration membrane and the filtered water passed through the reverse osmosis membrane. Such an arrangement greatly improves the water purification effect of the composite filter element.

[0049] The first water purification element 210 may be a polyaluminium chloride filter element; the filter membrane element 212 may also include a polypropylene outer layer and a polyaluminium chloride middle layer. The nanofiltration membrane / reverse osmosis membrane, the polyaluminium chloride middle layer and the polypropylene outer layer are wound sequentially from the inside to the outside on the central tube 211.

[0050] It can be understood that in this embodiment, raw water enters the first filter area 200a through the raw water inlet 100a and is filtered by the first water purification component 210, and then flows to the second filter area 200b through the central tube 211, and is purified again by the second water purification component 220 to obtain pure water, which flows out through the pure water outlet 100c. The concentrated water produced by the first filter area 200a and the second filter area 200b is discharged through the concentrated water discharge port 100b.

[0051] like Figure 3 As shown, in order to avoid the raw water, concentrated water and pure water from running around and affecting the quality of the filtered water, in one embodiment, the first water purification component 210 and the first end cover assembly 230 can be sealed by hot melt adhesive. Specifically, the pre-PAC filter element can be sealed with the first end cover 231 and the second end cover 232 by hot melt adhesive respectively; the second water purification component 220 and the second end cover assembly 240 can be sealed with hot melt adhesive. Specifically, the carbon rod can be sealed with the third end cover 241 and the fourth end cover 242 by hot melt adhesive respectively.

[0052] In addition, in some embodiments, the filter bottle body 110 and the first end cover assembly 230 can be sealed and connected via a first seal, specifically, the filter bottle body 110 and the first end cover 231 and the second end cover 232 can be sealed and connected via the first seal, respectively; the filter bottle body 110 and the second end cover assembly 240 can be sealed and connected via a second seal, specifically, the filter bottle body 110 and the third end cover 241 and the fourth end cover 242 can be sealed and connected via the second seal, respectively; the first end cover assembly 230 and the second end cover assembly 240 can be sealed and connected via a third seal, specifically, the second end cover 232 and the fourth end cover 242 can be sealed and connected via the third seal.

[0053] The first sealing member, the second sealing member and the third sealing member can all be O-rings, and their materials can be silicone or rubber, etc. Here, there is no limitation on their size, shape and material.

[0054] The present invention also proposes a water purifier, which includes a composite filter element. The specific structure of the composite filter element refers to the above-mentioned embodiment. Since the water purifier proposed by the present invention includes all schemes of all embodiments of the above-mentioned composite filter element, it has at least the same technical effect as the composite filter element, which will not be elaborated here one by one.

[0055] refer to Figure 1 and Figure 3In one embodiment of the present invention, the water purifier composite filter element includes a shell component 100 and an osmotic filter component 200; the shell component 100 is formed with an installation cavity; the osmotic filter component 200 is installed in the installation cavity, and the osmotic filter component 200 includes a first water purification component 210, a second water purification component 220, a first end cover component 230 and a second end cover component 240, the first end cover component 230 is formed with a first accommodating cavity for accommodating the first water purification component 210 to form a first filtering area 200a; the first end cover component 230 is recessed with an installation groove 230a connected to the first accommodating cavity, and the second end cover component 240 is arranged in the installation groove 230a and is formed with a second accommodating cavity for accommodating the second water purification component 220 to form a second filtering area 200b.

[0056] Among them, the water purification system of the water purifier includes an inlet pipeline, a pure water pipeline, and a concentrated water pipeline; the inlet pipeline is connected to the raw water inlet 100a of the composite filter element, the concentrated water pipeline is connected to the concentrated water discharge port 100b of the composite filter element, and the pure water pipeline is connected to the pure water outlet 100c of the composite filter element.

[0057] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A composite filter element, characterized in that: The composite filter element comprises: a housing assembly forming a mounting cavity; and An osmotic filter assembly is installed in the installation cavity, and the osmotic filter assembly includes a first water purification component, a second water purification component, a first end cover assembly and a second end cover assembly, wherein the first end cover assembly is formed with a first accommodating cavity for accommodating the first water purification component to form a first filtration area; the first end cover assembly is concavely provided with an installation groove communicating with the first accommodating cavity, and the second end cover assembly is arranged in the installation groove and is formed with a second accommodating cavity for accommodating the second water purification component to form a second filtration area; The housing assembly comprises a filter bottle body and a filter bottle cover disposed on the filter bottle body, the filter bottle cover is provided with a raw water inlet, a concentrated water outlet and a pure water outlet, the raw water inlet is communicated with the first filter area, the concentrated water outlet is communicated with the first filter area, and the pure water outlet is communicated with the second filter area; The first end cover assembly includes a first end cover and a second end cover which is covered in the first end cover, the first end cover and the second end cover are combined to form the first accommodating cavity, the second end cover is provided with the mounting groove, the second end cover assembly includes a third end cover which is arranged in the mounting groove and a fourth end cover which is covered on the third end cover, the third end cover and the fourth end cover are combined to form the second accommodating cavity.

2. The composite filter element according to claim 1, characterized in that: The first water purification component includes a central tube and a filter membrane element wound on the central tube, the filter membrane element forms the first filter area, the central tube extends from the first filter area of ​​the first end cover assembly through the bottom wall of the second end cover assembly into the second filter area and is connected to the pure water outlet through the second water purification component.

3. The composite filter element according to claim 2, characterized in that: The filtration membrane element comprises a nanofiltration membrane, a reverse osmosis membrane and a waterproof membrane, wherein the nanofiltration membrane and the reverse osmosis membrane are respectively wound on the outer walls of the central tube on both sides opposite to each other and separated by the waterproof membrane; The waterproof membrane is used to separate the reverse osmosis membrane and the nanofiltration membrane to prevent the nanofiltration water filtered through the nanofiltration membrane from entering the reverse osmosis membrane and to prevent the filtered water passed through the reverse osmosis membrane from entering the nanofiltration membrane.

4. The composite filter element according to claim 3, characterized in that: The central tube includes a first half tube and a second half tube connected and fixed to the first half tube, the nanofiltration membrane is arranged on the first half tube, the reverse osmosis membrane is arranged on the second half tube, and the waterproof membrane is arranged between the nanofiltration membrane and the reverse osmosis membrane to separate the nanofiltration water filtered by the nanofiltration membrane and the filtered water passed through the reverse osmosis membrane.

5. The composite filter element according to claim 4, characterized in that: The first water purification component is a polyaluminium chloride filter element; the filter membrane element also includes a polypropylene outer layer and a polyaluminium chloride middle layer; The nanofiltration membrane / the reverse osmosis membrane, the polyaluminium chloride middle layer and the polypropylene outer layer are sequentially wound from the inside to the outside on the central tube.

6. The composite filter element according to claim 1, characterized in that: The second water purification component is a carbon rod filter element.

7. The composite filter element according to claim 1, characterized in that: The first water purification component and the first end cover assembly are bonded and sealed by hot melt adhesive; the second water purification component and the second end cover assembly are bonded and sealed by hot melt adhesive.

8. The composite filter element according to claim 1, characterized in that: The filter bottle body and the first end cap assembly are sealed connected via a first seal; the filter bottle body and the second end cap assembly are sealed connected via a second seal; the first end cap assembly and the second end cap assembly are sealed connected via a third seal.

9. A water purifier, characterized in that: The water purifier comprises the composite filter element as described in any one of claims 1 to 8.

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