Packaging structure, water quality adjusting assembly and ecological aquaculture system

Abstract

The utility model discloses a kind of packaging structure, water quality adjusting assembly and ecological breeding system, belong to water quality adjusting technical field.In which, packaging structure, applied to water quality adjusting agent, include: isolation layer, hydrophilic layer and slow-release layer, isolation layer is formed around and is used to load water quality adjusting agent containing cavity, containing cavity is configured as with the outside isolation of isolation layer;Hydrophilic layer is along the thickness direction of isolation layer, hydrophilic layer is located at the outside of isolation layer, and at least part of hydrophilic layer can be dissolved in liquid;Slow-release layer is located between isolation layer and hydrophilic layer, along the thickness direction of isolation layer, slow-release layer is wrapped in the outside of isolation layer and is connected with the inside of hydrophilic layer, to separate isolation layer and hydrophilic layer, and the outer wall of slow-release layer is set to hydrophobic material quality.The utility model slows down the speed of water quality adjusting, maintains the relative stability of water quality in the process of adjusting water quality, avoids the growth of aquatic animals and plants living by being adjusted water due to water quality mutation and is not suitable.

Description

Technical Field

[0001] This utility model relates to the field of water quality regulation technology, and in particular to an encapsulation structure, water quality regulation components, and an ecological aquaculture system. Background Technology

[0002] In related technologies, the most common method for water quality regulation is to add water quality conditioning blocks. However, existing water quality conditioning blocks often dissolve too quickly. On the one hand, the rapid change in water quality exceeds the adaptability of the plants and animals in the aquarium, causing stress responses. On the other hand, because the water quality conditioning blocks dissolve too quickly, they cannot maintain stable water quality for a long period of time. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an encapsulation structure that can reduce the dissolution rate of water quality regulators, thereby slowing down the water quality adjustment process and maintaining relative stability of water quality during the adjustment process.

[0004] This utility model also proposes a water quality conditioning component and an ecological aquaculture system that include the above-mentioned encapsulation structure.

[0005] According to a first aspect of the present invention, an encapsulation structure is applied to a water quality conditioner, comprising: an isolation layer, a hydrophilic layer, and a slow-release layer. The isolation layer encloses a cavity for loading the water quality conditioner, the cavity being configured to be isolated from the outside of the isolation layer. The hydrophilic layer is disposed on the outside of the isolation layer along its thickness direction, and at least a portion of the hydrophilic layer is soluble in a liquid. The slow-release layer is disposed between the isolation layer and the hydrophilic layer, and along its thickness direction, the slow-release layer wraps around the outside of the isolation layer and connects to the inside of the hydrophilic layer to separate the isolation layer and the hydrophilic layer. The outer wall of the slow-release layer is made of a hydrophobic material.

[0006] The packaging structure according to the embodiments of this utility model has at least the following beneficial effects:

[0007] The encapsulation structure of this utility model embodiment uses an isolation layer to load a water quality regulator for adjusting water quality. A slow-release layer and a hydrophilic layer are sequentially arranged on the outside of the isolation layer. The slow-release layer delays the release of the water quality regulator, while the hydrophilic layer controls the dissolution process, thereby effectively controlling the release rate of the water quality regulator and reducing its dissolution rate. This slows down the water quality adjustment process, maintains relative stability of the water quality, and avoids adverse effects on the growth of plants and animals that rely on the regulated water due to sudden changes in water quality.

[0008] According to some embodiments of the present invention, the hydrophilic layer is provided with a plurality of through holes at intervals, each of the through holes penetrating the hydrophilic layer along the thickness direction of the isolation layer to expose a portion of the outer wall of the slow-release layer, and the through holes are configured to allow liquid from outside the hydrophilic layer to flow in.

[0009] According to some embodiments of the present invention, the cross-sectional area of ​​the through hole gradually decreases or gradually increases along the thickness direction of the isolation layer.

[0010] According to some embodiments of the present invention, the outer surface of the hydrophilic layer is provided with a concave-convex structure, the concave-convex structure including a plurality of protrusions and a plurality of concave portions, the protrusions protruding away from the isolation layer, the concave portions recessing towards the isolation layer, and the protrusions and concave portions being alternately arranged along the circumference of the hydrophilic layer.

[0011] According to some embodiments of this utility model, the outer wall of the isolation layer is an arc surface;

[0012] And / or, the outer wall of the sustained-release layer is an arc surface;

[0013] And / or, the outer wall of the hydrophilic layer is an arc surface.

[0014] According to some embodiments of the present invention, along the thickness direction of the isolation layer, the minimum thickness of the hydrophilic layer is a, which satisfies: 10μm≤a≤15μm.

[0015] According to some embodiments of the present invention, the minimum thickness of the sustained-release layer along the thickness direction of the isolation layer is b, which satisfies: 50μm≤b≤80μm.

[0016] According to some embodiments of the present invention, the minimum thickness of the isolation layer along the thickness direction is c, which satisfies: 8μm≤c≤15μm.

[0017] The water quality conditioning component according to the second aspect of the present invention includes a plurality of the encapsulation structures described in the first aspect embodiment, wherein two adjacent encapsulation structures are interconnected.

[0018] The water quality conditioning component according to the embodiment of this utility model has at least the following beneficial effects:

[0019] The water quality conditioning component of this embodiment adopts the packaging structure of the first aspect embodiment. An isolation layer is provided to hold the water quality conditioner used for water quality adjustment. A slow-release layer and a hydrophilic layer are sequentially provided on the outside of the isolation layer. The slow-release layer delays the release of the water quality conditioner, while the hydrophilic layer controls the dissolution process, thereby effectively controlling the release rate of the water quality conditioner and reducing its dissolution rate. This slows down the water quality adjustment process, maintaining relative stability of the water quality during adjustment and preventing adverse effects on the growth of plants and animals that rely on the regulated water due to sudden changes in water quality. This not only improves the reliability of the water quality conditioning component but also reduces the frequency of user additions, thus reducing usage costs.

[0020] The ecological aquaculture system according to a third aspect of the present invention includes the water quality regulation component described in the second aspect embodiment.

[0021] The ecological aquaculture system according to the embodiments of this utility model has at least the following beneficial effects:

[0022] The ecological aquaculture system of this utility model adopts the water quality adjustment component of the second aspect embodiment. By optimizing the structural design of the encapsulation structure, the speed of water quality adjustment is slowed down. During the water quality adjustment process, the water quality in the ecological aquaculture system is kept relatively stable, avoiding the discomfort of plant and animal growth in the ecological aquaculture system caused by sudden changes in water quality. This not only improves the reliability of the water quality adjustment component, but also reduces the frequency of users adding water quality adjustment components, thereby reducing the cost of use.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0025] Figure 1 This is a schematic diagram of the packaging structure according to an embodiment of the present invention;

[0026] Figure 2 This is a cross-sectional schematic diagram of the hydrophilic layer according to an embodiment of the present invention;

[0027] Figure 3 This is a partial view of the outer wall of the hydrophilic layer according to an embodiment of the present invention;

[0028] Figure 4 This is a cross-sectional schematic diagram of the sustained-release layer and the isolation layer according to an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram illustrating the fabrication of the packaging structure according to an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of a water quality conditioning component according to an embodiment of the present invention.

[0031] Icon labels:

[0032] Water quality conditioning components 1000;

[0033] Encapsulation structure 100; isolation layer 110; receiving cavity 111; hydrophilic layer 120; through hole 121; uneven structure 122; protrusion 1221; recess 1222; sustained release layer 130;

[0034] Spray gun 200. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0038] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0039] Currently, the common method for water quality adjustment is to use water quality control blocks, which can alter the water quality of an aquarium to some extent. However, existing water quality control blocks often dissolve too quickly. On the one hand, the rapid change in water quality exceeds the adaptability of the plants and animals in the aquarium, causing stress responses. For example, some fish may exhibit abnormal swimming behavior, reduced feeding, or even illness and death due to sudden changes in water quality. Aquatic plants may also experience stunted growth, yellowing and withering leaves. This disrupts the normal growth and living order of the organisms, causing the entire aquaculture system to lose its balance.

[0040] On the other hand, because the water quality conditioning blocks dissolve too quickly, they cannot maintain stable water quality over a long period of time. This makes water quality management cumbersome, requiring users to frequently observe the water quality and add new water quality conditioning blocks periodically, increasing the frequency and cost of manual intervention and causing many inconveniences for users.

[0041] To address the aforementioned problems, some embodiments of this utility model propose an encapsulation structure 100 for use with water quality regulators. This structure is suitable for ecological aquaculture systems and can reduce the dissolution rate of the water quality regulator, thereby slowing down the water quality adjustment process and maintaining relative stability of the water quality during the adjustment process. See details below. Figures 1 to 6 The packaging structure 100 is illustrated below.

[0042] Reference Figure 1 As shown, in this embodiment of the present invention, the encapsulation structure 100 includes: an isolation layer 110, a hydrophilic layer 120, and a slow-release layer 130. The isolation layer 110 forms a receiving cavity 111 for loading the water quality conditioner, and the receiving cavity 111 is configured to be isolated from the outside of the isolation layer 110. It can be understood that the isolation layer 110 refers to a sealing layer that completely encapsulates the water quality conditioner, and may be primarily made of hydroxypropyl methylcellulose material, which is used to physically isolate the conditioner from contact with external liquids.

[0043] Continue to refer to Figure 1 As shown, in this embodiment of the invention, the hydrophilic layer 120 is disposed on the outer side of the isolation layer 110 along the thickness direction of the isolation layer 110, and at least a portion of the hydrophilic layer 120 is soluble in liquid. In this embodiment, the hydrophilic layer 120 refers to an outer layer with water-soluble or water-absorbing swelling properties, specifically made of hydroxypropyl methylcellulose material, which forms liquid permeation channels through partial dissolution. In one example, the outer wall of the slow-release layer 130 is sprayed with sodium chloride as a moisture-absorbing layer.

[0044] Continue to refer to Figure 1As shown, in this embodiment of the invention, the sustained-release layer 130 is disposed between the isolation layer 110 and the hydrophilic layer 120. Along the thickness direction of the isolation layer 110, the sustained-release layer 130 wraps around the outside of the isolation layer 110 and connects to the inside of the hydrophilic layer 120 to separate the isolation layer 110 and the hydrophilic layer 120. The outer wall of the sustained-release layer 130 is made of a hydrophobic material. Specifically, in this embodiment, the sustained-release layer 130 can be implemented using a polytetrafluoroethylene coating. The sustained-release layer 130 wraps around the isolation layer 110, while the hydrophilic layer 120 wraps around the sustained-release layer 130.

[0045] Reference Figure 5 As shown in this embodiment of the present invention, the coating is first uniformly sprayed onto the outer wall of the isolation layer 110 to form a slow-release layer 130. After it is formed, the coating is then sprayed onto the outer wall of the slow-release layer 130 to construct a hydrophilic layer 120.

[0046] When the encapsulation structure 100 is immersed in water, the surface of the hydrophilic layer 120 first interacts with water molecules, and its dissolution process forms microporous channels. After passing through the hydrophilic layer 120, the liquid contacts the hydrophobic surface of the sustained-release layer 130. Due to surface tension, droplets are formed instead of a continuous liquid film, effectively extending the permeation path. The encapsulation of the isolation layer 110 by the sustained-release layer 130 ensures that the liquid must overcome hydrophobic resistance to contact the isolation layer 110, forming a three-stage progressive permeation control. The isolation layer 110 maintains its structural integrity under the protection of the sustained-release layer 130 until the sustained-release layer 130 is completely permeated before releasing the regulator.

[0047] Compared with existing technologies, traditional regulating blocks rely on a single material to control the dissolution rate, failing to achieve gradient control of the penetration path. This embodiment of the invention utilizes the synergistic effect of the hydrophilic layer 120, the slow-release layer 130, and the isolation layer 110 to create a three-stage decay of the dissolution rate in the spatial dimension. Each time the liquid penetrates a layer, it must overcome different material resistance characteristics, thereby precisely controlling the regulator release curve.

[0048] It is understood that the encapsulation structure 100 of this utility model embodiment loads a water quality regulator for adjusting water quality through an isolation layer 110. A slow-release layer 130 and a hydrophilic layer 120 are sequentially arranged on the outside of the isolation layer 110. The slow-release layer 130 delays the release of the water quality regulator, while the hydrophilic layer 120 controls the dissolution process, thereby effectively controlling the release rate of the water quality regulator and reducing the dissolution rate of the water quality regulator. This slows down the speed of water quality adjustment and maintains the relative stability of water quality during the process of adjusting water quality, avoiding the discomfort of plants and animals that rely on the regulated water for survival due to sudden changes in water quality.

[0049] Reference Figure 2As shown in this embodiment of the invention, the hydrophilic layer 120 is provided with a plurality of through holes 121 spaced apart. Each through hole 121 penetrates the hydrophilic layer 120 along the thickness direction of the isolation layer 110 to expose a portion of the outer wall of the slow-release layer 130. The through holes 121 are configured to allow liquid from outside the hydrophilic layer 120 to flow in, thereby establishing a direct contact channel between the water and the outer wall of the slow-release layer 130. Exposing a portion of the outer wall of the slow-release layer 130 means that the surface of the slow-release layer 130 at the opening of the through hole 121 is not covered by the hydrophilic layer 120. Therefore, the water flowing in from the through hole 121 can directly contact the slow-release layer 130.

[0050] When the hydrophilic layer 120 comes into contact with the liquid, its surface dissolution process and the liquid flow within the through-holes 121 reach a dynamic equilibrium. The liquid directly wets the outer wall of the slow-release layer 130 through the through-holes 121, triggering the release of the water quality regulator from the hydrophobic slow-release layer 130. During the incomplete dissolution stage of the hydrophilic layer 120, the number and distribution density of the through-holes 121 determine the exposed area of ​​the slow-release layer 130, thereby regulating the release rate. As the hydrophilic layer 120 gradually dissolves, the dissolution rate at the edges of the through-holes 121 increases due to the accelerated liquid flow, forming progressively expanding liquid channels, resulting in a stepwise increase in the release rate of the slow-release layer 130.

[0051] In one example, the cross-sectional area of ​​the through-hole 121 gradually decreases along the thickness direction of the isolation layer 110. It should be noted that the gradual decrease in the cross-sectional area of ​​the through-hole 121 refers to the pores exhibiting a contracting shape in the liquid flow direction. This can be achieved using a tapered pore structure, which creates a flow resistance gradient from the outside to the inside during liquid permeation. When the through-hole 121 adopts a gradually decreasing cross-sectional area design, the flow resistance gradually increases as the liquid enters the outer wall of the slow-release layer 130 through the through-hole 121, thus reducing the initial dissolution rate of the outer wall of the slow-release layer 130.

[0052] In another example, the cross-sectional area of ​​the through-hole 121 gradually increases along the thickness direction of the isolation layer 110. It should be noted that the gradual increase in the cross-sectional area of ​​the through-hole 121 refers to the expansion of the channel in the direction of liquid flow. This can be achieved using an inverted conical channel structure, which creates a gradient of diffusion area from the outside to the inside during liquid permeation. When the through-hole 121 adopts a gradually increasing cross-sectional area design, the diffusion area of ​​the liquid within the through-hole 121 increases with depth, leading to an increase in the dissolution efficiency of the outer wall of the sustained-release layer 130 with prolonged contact time.

[0053] Reference Figure 3As shown in this embodiment of the invention, the outer surface of the hydrophilic layer 120 is provided with a concave-convex structure 122. The concave-convex structure 122 includes multiple protrusions 1221 and multiple recesses 1222. The protrusions 1221 protrude away from the isolation layer 110, and the recesses 1222 are recessed towards the isolation layer 110. It should be noted that the protrusions 1221 are outwardly extending three-dimensional structures, and the recesses 1222 are inwardly recessed three-dimensional structures. Along the circumference of the hydrophilic layer 120, the protrusions 1221 and recesses 1222 are alternately arranged. The alternating convex-convex structure forms a wave-like dissolution front in the circumferential direction, thereby increasing the contact area between the hydrophilic layer 120 and the water.

[0054] It is understandable that, compared with the smooth structure of the hydrophilic layer 120, the present invention forms a non-uniform dissolution interface through an alternating convex and concave structure. In the middle stage of dissolution, the dissolution is delayed by the retention effect of the concave part 1222. In the later stage of dissolution, the slow-release effect is maintained by the structural integrity. This ensures the timely release of the water quality regulator while extending the effective action time and avoiding the problem of unstable release caused by too rapid dissolution.

[0055] Reference Figure 1 As shown, in this embodiment of the invention, the outer wall of the isolation layer 110 is curved; and / or, the outer wall of the sustained-release layer 130 is curved; and / or, the outer wall of the hydrophilic layer 120 is curved. Specifically, a curved outer wall means that the outer surface has a curved shape. The curved design of the outer wall of the isolation layer 110 can disperse the concentrated effect of external pressure on the receiving cavity 111. When the outer wall of the sustained-release layer 130 is curved, the contact area between the curved surface and the hydrophilic layer 120 is effectively reduced, which restricts the permeation process of the sustained-release layer 130 material, thereby prolonging the release time of the water quality conditioner. The curved structure of the outer wall of the hydrophilic layer 120 can achieve uniform release, so that the liquid forms a multi-directional flow path when in contact, promoting the uniform diffusion of dissolved substances.

[0056] Reference Figure 2 As shown, in this embodiment of the invention, the minimum thickness of the hydrophilic layer 120 along the thickness direction of the isolation layer 110 is 'a', satisfying: 10μm≤a≤15μm. It should be noted that the minimum thickness of the hydrophilic layer 120 refers to the size of the thinnest region of the hydrophilic layer 120 in the direction perpendicular to the surface of the isolation layer 110. When the hydrophilic layer 120 comes into contact with the liquid, its dissolution process gradually progresses from the outer surface to the inner surface. If the thickness is too thin, the hydrophilic layer 120 dissolves completely in a short time, causing the slow-release layer 130 to be exposed to the liquid environment prematurely; if the thickness is too thick, the time required for the hydrophilic layer 120 to dissolve is significantly prolonged, delaying the release of the water quality regulator. Based on this, this embodiment of the invention, by reasonably limiting the range of values ​​for 'a', ensures that the water quality regulator begins to be released within a preset time while avoiding drastic fluctuations in the release rate due to sudden changes in channel size.

[0057] Reference Figure 4 As shown, in this embodiment of the invention, the minimum thickness of the slow-release layer 130 along the thickness direction of the isolation layer 110 is b, satisfying: 50μm≤b≤80μm. It should be noted that the minimum thickness of the slow-release layer 130 refers to the thickness of the thinnest region of the slow-release layer 130 in the direction perpendicular to the surface of the isolation layer 110. If the thickness of the slow-release layer 130 is too small, the release rate of the water quality regulator will be too fast; if the thickness of the slow-release layer 130 is too large, the release rate of the water quality regulator will be too slow. Therefore, this embodiment of the invention, by reasonably limiting the range of values ​​for b, enables the water quality regulator to be released gradually at a predetermined rate, avoiding sudden changes in water quality parameters caused by large-scale dissolution in a short period, and ensuring the continuous and stable release of the water quality regulator.

[0058] Reference Figure 4 As shown, in this embodiment of the invention, the minimum thickness of the isolation layer 110 along its thickness direction is c, satisfying: 8μm ≤ c ≤ 15μm. It should be noted that the minimum thickness of the isolation layer 110 refers to the vertical distance at the weakest point of the isolation layer 110. If the thickness of the isolation layer 110 is too small, its structural stability is low, leading to easy leakage of the water quality regulator; if the thickness of the isolation layer 110 is too large, the water quality regulator is difficult to release stably. Therefore, this embodiment of the invention, by reasonably limiting the range of c, ensures the continuous release of the water quality regulator at a preset rate while maintaining the stability of the encapsulation structure 100.

[0059] Reference Figure 6 As shown, an embodiment of this utility model also proposes a water quality conditioning component 1000, including multiple encapsulation structures 100 as described in the above embodiment, with adjacent encapsulation structures 100 interconnected. Specifically, the overall shape of the multiple encapsulation structures 100 can be the same or different; the encapsulation structure 100 can be spherical, cubic, or cylindrical, and this embodiment does not limit this. In one example, the water quality conditioning component 1000 is shaped approximately like a turtle, with its head, shell, limbs, and tail serving as encapsulation structures 100. Adjacent encapsulation structures 100 can be connected by methods such as hot-melt bonding, snap-fit ​​fitting, or mechanical winding, ensuring the component maintains its integrity in the water.

[0060] The water quality conditioning component 1000 of this embodiment adopts the encapsulation structure 100 of the above embodiment. A water quality conditioner for adjusting water quality is loaded into an isolation layer 110. A slow-release layer 130 and a hydrophilic layer 120 are sequentially disposed on the outer side of the isolation layer 110. The slow-release layer 130 delays the release of the water quality conditioner, while the hydrophilic layer 120 controls the dissolution process, thereby effectively controlling the release rate of the water quality conditioner and reducing its dissolution rate. This slows down the water quality conditioning process, maintaining relative stability of the water quality during adjustment and preventing adverse effects on the growth of plants and animals that rely on the regulated water due to sudden changes in water quality. This not only improves the reliability of the water quality conditioning component 1000 but also reduces the frequency of user additions, thereby reducing usage costs.

[0061] Since the water quality conditioning component 1000 adopts all the technical solutions of the encapsulation structure 100 of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0062] An embodiment of this utility model also proposes an ecological aquaculture system, including the water quality conditioning component 1000 described in the above embodiment. Specifically, the ecological aquaculture system refers to an integrated system that includes an aquaculture water environment and the water quality conditioning component 1000, such as an ecological tank.

[0063] The ecological aquaculture system of this utility model adopts the water quality adjustment component 1000 of the above embodiment. By optimizing the structural design of the encapsulation structure 100, the speed of water quality adjustment is slowed down. During the water quality adjustment process, the water quality in the ecological aquaculture system is kept relatively stable, avoiding the unsuitable growth of plants and animals in the ecological aquaculture system due to sudden changes in water quality. This not only improves the reliability of the water quality adjustment component 1000, but also reduces the frequency of users adding the water quality adjustment component 1000, thereby reducing the cost of use.

[0064] Since the ecological aquaculture system adopts all the technical solutions of the water quality regulation component 1000 in the above embodiments, it has at least all the beneficial effects brought about by the technical solutions in the above embodiments, which will not be repeated here.

[0065] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A packaging structure for use in water quality conditioners, characterized in that, include: An isolation layer is provided to form a cavity for holding the water quality conditioner, the cavity being configured to be isolated from the outside of the isolation layer; A hydrophilic layer is disposed on the outside of the isolation layer along the thickness direction of the isolation layer, and at least a portion of the hydrophilic layer is soluble in liquid; A sustained-release layer is disposed between the isolation layer and the hydrophilic layer. Along the thickness direction of the isolation layer, the sustained-release layer wraps around the outside of the isolation layer and is connected to the inside of the hydrophilic layer to separate the isolation layer and the hydrophilic layer. The outer wall of the sustained-release layer is made of a hydrophobic material.

2. The packaging structure according to claim 1, characterized in that, The hydrophilic layer is provided with a plurality of through holes at intervals, each of the through holes penetrating the hydrophilic layer along the thickness direction of the isolation layer to expose a portion of the outer wall of the slow-release layer, and the through holes are configured to allow liquid from outside the hydrophilic layer to flow in.

3. The packaging structure according to claim 2, characterized in that, Along the thickness direction of the isolation layer, the cross-sectional area of ​​the through hole gradually decreases or gradually increases.

4. The packaging structure according to claim 1, characterized in that, The outer surface of the hydrophilic layer is provided with a concave-convex structure, which includes multiple protrusions and multiple concave portions. The protrusions protrude away from the isolation layer, and the concave portions are recessed towards the isolation layer. The protrusions and concave portions are alternately arranged along the circumference of the hydrophilic layer.

5. The packaging structure according to claim 1, characterized in that, The outer wall of the isolation layer is curved. And / or, the outer wall of the sustained-release layer is an arc surface; And / or, the outer wall of the hydrophilic layer is an arc surface.

6. The packaging structure according to claim 1, characterized in that, Along the thickness direction of the isolation layer, the minimum thickness of the hydrophilic layer is a, which satisfies: 10μm≤a≤15μm.

7. The packaging structure according to claim 1, characterized in that, Along the thickness direction of the isolation layer, the minimum thickness of the sustained-release layer is b, which satisfies: 50μm≤b≤80μm.

8. The packaging structure according to claim 1, characterized in that, Along the thickness direction of the isolation layer, the minimum thickness of the isolation layer is c, which satisfies: 8μm≤c≤15μm.

9. A water quality conditioning component, characterized in that, It includes a plurality of the packaging structures described in any one of claims 1 to 8, wherein two adjacent packaging structures are interconnected.

10. An ecological aquaculture system, characterized in that, Includes the water quality conditioning component as described in claim 9.

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