A filter baffle for an aquarium and an aquarium

Abstract

The utility model belongs to the technical field of water tribe equipment relates to a filter flow guide plate and fish tank for fish tank, and the filter flow guide plate includes flow guide plate body and the multiple support legs connected in the bottom of flow guide plate body. Form flow guide channel between multiple support legs and flow guide plate body. Flow guide plate body is used for bearing the sandstone in fish tank. Multiple vertical settings and the flow guide hole of penetrating flow guide plate body are equipped on flow guide plate body, and the flow guide hole is communicated with flow guide channel. Every side of flow guide plate body is equipped with the clamping slot or the convex, and the shape of clamping slot and convex is matched. The scheme of the utility model, not only can fish manure flow guide and filter in sandstone gap, realize the purification to water quality, and the filter flow guide plate can be combined and expanded freely according to the size of different fish tank, significantly improve the versatility and adaptive capacity of product, reduce the cost.

Description

Technical Field

[0001] This utility model belongs to the field of aquarium equipment technology, and relates to a filter guide plate for a fish tank and a fish tank. Background Technology

[0002] In the daily use of aquariums, cleaning fish waste is crucial for maintaining water quality. To achieve this, existing aquariums typically have a self-cleaning function. A typical aquarium consists of an upper tank and a lower tank, connected by a connecting hole for water flow. The fish reside in the upper tank, while the lower tank houses the filtration system, which includes a water pump and filter components. During operation, the water pump draws water from the lower tank to the upper side wall of the upper tank, using the falling water flow to flush away fish waste from the bottom of the upper tank. The fish waste is then carried by the water flow through the connecting hole into the lower tank. After the filter components filter the fish waste, the filtered water is pumped back into the upper tank, creating a water circulation system.

[0003] However, the bottom of the upper tank of existing aquariums is usually covered with gravel to create a natural landscape. Fish waste easily accumulates in the gaps between the gravel and sand. Water flow cannot easily wash the fish waste out of the gaps between the gravel and sand. The gravel and sand also prevent the fish waste from flowing into the lower tank with the water flow. The filtration system cannot filter the fish waste. The fish waste accumulates in the gaps between the gravel and sand for a long time, which is not only difficult to clean, but also deteriorates the water quality in the upper aquarium and damages the health of the fish. Utility Model Content

[0004] The purpose of this utility model is to provide a filter guide plate and aquarium for fish tanks, so as to solve the technical problem that the existing technology cannot clean and filter fish feces in the gaps of sand and gravel, resulting in water quality deterioration and damage to the health of fish.

[0005] To achieve the above objectives, the present invention provides a specific technical solution for a filter guide plate for a fish tank as follows: A filter guide plate for a fish tank includes a guide plate body and a plurality of support legs connected to the bottom of the guide plate body, wherein a flow channel is formed between the plurality of support legs and the guide plate body; the guide plate body is used to carry sand and gravel in the fish tank; The guide plate body is provided with a plurality of vertically arranged guide holes that penetrate the guide plate body and the guide holes are connected to the guide channel; each side of the guide plate body is provided with a slot or a protrusion, and the shape of the slot matches the shape of the protrusion.

[0006] Furthermore, the protrusion is dovetail-shaped, and the small end of the dovetail is connected to the side of the guide plate body; or, the protrusion includes a snap-fit ​​portion and a connecting portion, the connecting portion connecting the snap-fit ​​portion and the side of the guide plate body, and the size of the connecting portion is smaller than the size of the snap-fit ​​portion.

[0007] Furthermore, the ratio of the area of ​​the plurality of flow guide holes to the cross-sectional area of ​​the flow guide plate body is 0.5 to 0.8.

[0008] Furthermore, each of the support legs is provided with an anti-slip pad at its bottom.

[0009] Furthermore, the cross-sectional shape of the guide plate body is square, rectangular, or regular polygonal.

[0010] Furthermore, the multiple flow guide holes are arranged in a matrix or honeycomb pattern.

[0011] Furthermore, the guide plate body and the plurality of support legs are integrally formed, and the guide plate body and the plurality of support legs are made of polypropylene, ceramic or stainless steel.

[0012] Furthermore, the height of the filter guide plate is less than or equal to 10 mm.

[0013] Furthermore, the guide hole is circular, and the diameter of the guide hole is 3mm to 5mm.

[0014] This utility model also provides a fish tank, including an upper tank body, a lower tank body, a filter assembly and a water pump disposed in the lower tank body, and a plurality of filter guide plates for fish tanks as described in any of the above. A communication hole is provided between the upper tank body and the lower tank body. The plurality of filter guide plates are disposed at the bottom of the upper tank body, and two adjacent guide plate bodies are engaged by corresponding slots and protrusions.

[0015] The filter guide plate and fish tank of this utility model have the following advantages: This invention utilizes a water flow to flush away fish waste from the gaps in the sand and gravel. The waste is directed through the guide holes into the guide channel beneath the guide plate body. Since there are no obstructions in the guide channel, the fish waste can continue flowing into the lower tank through the connecting holes of the aquarium. The fish waste is then filtered by the filter components, purifying the water. This filter guide plate effectively filters and guides fish waste from the gaps in the sand and gravel, cleaning it and purifying the water to prevent harm to the fish's health. Furthermore, because the filter guide plate adopts a modular splicing design, it can be freely combined and expanded according to different aquarium sizes, significantly improving the product's versatility and adaptability, and avoiding the increased costs associated with customized production. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the filter guide plate of this utility model; Figure 2 This is a top view of the filter guide plate of this utility model; Figure 3This is a side view of the filter guide plate of this utility model; Figure 4 This is a splicing diagram of the filter guide plate of this utility model; Figure 5 This is a schematic diagram of the structure of the fish tank according to this utility model; Figure 6 for Figure 5 A magnified view of a portion of point A in the middle.

[0017] Figure label: 1. Filter guide plate; 11. Filter guide plate body; 12. Support leg; 13. Flow guide hole; 14. Slot; 15. Protrusion; 151. Snap-fit ​​part; 152. Connecting part; 16. Anti-slip pad; 17. Flow guide channel; 2. Upper cylinder; 3. Lower cylinder; 4. Water pump; 5. Filter assembly; 6. Sand and gravel; 7. Connecting hole. Detailed Implementation

[0018] The technical solutions of this application will now be described clearly and in detail with reference to the accompanying drawings. In the description of the embodiments of this application, "multiple" refers to two or more. The terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0019] To maintain clean water quality and remove fish waste, existing aquariums typically have self-cleaning functions. For example... Figure 5 As shown, the existing fish tank includes an upper tank 2 and a lower tank 3. A connecting hole 7 for water flow is provided between the upper tank 2 and the lower tank 3. Fish are located in the upper tank 2, and a filtration system is installed in the lower tank 3. The filtration system includes a water pump 4 and a filter assembly 5. During operation, the water pump 4 pumps water from the lower tank 3 to the upper end of the side wall of the upper tank 2. The falling water flow washes away fish waste at the bottom of the upper tank 2. The fish waste enters the lower tank 3 through the connecting hole 7 with the water flow. After the filter assembly 5 filters the fish waste, the filtered water is pumped back into the upper tank 2 by the water pump 4, forming a water circulation. However, the bottom of the upper tank 2 of existing aquariums is usually covered with gravel 6 to create a natural landscape. Fish waste easily accumulates in the gaps of the gravel 6, and the water flow is not enough to flush the fish waste out of the gaps of the gravel 6. The gravel 6 prevents the fish waste from entering the lower tank 3 with the water flow. Therefore, the fish waste will not enter the lower tank 3 with the water flow, and the filter component 5 cannot filter the fish waste. The fish waste accumulates in the gaps of the gravel 6 for a long time, which is not only difficult to clean, but also deteriorates the water quality in the upper aquarium and damages the health of the fish.

[0020] To address the aforementioned problems, this application provides a filter guide plate 1 for aquariums, such as... Figures 1 to 6As shown, the filter guide plate 1 includes a guide plate body 11 and multiple support legs 12 connected to the bottom of the guide plate body 11, forming a flow channel between the multiple support legs 12 and the guide plate body 11. The guide plate body 11 is used to support the sand and gravel 6 in the aquarium. The guide plate body 11 is provided with multiple vertically arranged and penetrating flow holes 13, which communicate with the flow channel 17. Each side of the guide plate body 11 is provided with a groove 14 or a protrusion 15, and the shape of the groove 14 matches that of the protrusion 15.

[0021] The process of installing the filter guide plate 1 in the fish tank according to this utility model embodiment is as follows: First, select the corresponding number of filter guide plates 1 according to the size and shape of the fish tank and splice them together. The filter guide plates 1 are spliced ​​together by the corresponding slots 14 and protrusions 15. Second, install the spliced ​​filter guide plates 1 at the bottom of the upper tank body 2. Then, lay sand 6 on the filter guide plates 1 and plant aquatic plants. Finally, fill the upper tank body 2 with water and put in the fish to complete the installation.

[0022] The working process is as follows: The water pump 4 in the lower tank 3 is turned on, and the water in the lower tank 3 is pumped to the upper end of the side wall of the upper tank 2. Under the action of gravity, the water flow washes the sand and gravel 6, and the fish feces in the gaps of the sand and gravel 6 enter the guide channel 17 through the guide hole 13 with the water flow. Since there is no obstruction in the guide channel 17, the fish feces can continue to flow into the filter component 5 of the lower fish tank through the connecting hole 7 with the water flow. The fish feces are intercepted by the filter component 5, and the filtered water is pumped back into the upper tank 2 by the water pump 4 to realize water circulation.

[0023] When the filter guide plate 1 of this embodiment is installed at the bottom of the upper tank 2 of the aquarium, fish waste in the gaps between the gravel and sand enters the guide channel 17 through the guide hole 13 under the flushing action of the water flow. Since there is no obstruction in the guide channel 17, the fish waste can continue to flow into the lower tank 3 through the connecting hole 7 of the aquarium with the water flow. The fish waste is filtered by the filter assembly 5, thus purifying the water. The filter guide plate 1 of this invention can filter and guide fish waste in the gaps between the gravel and sand 6, so that the fish waste is cleaned up, purifying the water and preventing damage to the health of the fish. Moreover, since the filter guide plate 1 adopts a modular splicing design, it can be freely combined and expanded according to the size of different aquariums, which significantly improves the versatility and adaptability of the product and avoids the increased costs brought about by customized production. Furthermore, when some of the filter guide plates 1 are damaged, only the damaged filter guide plates 1 need to be replaced, which also significantly reduces the later use costs.

[0024] In some embodiments of this utility model, the protrusion 15 is dovetail-shaped, and the small end of the dovetail is connected to the side of the guide plate body 11. Correspondingly, the slot 14 is also dovetail-shaped. In this embodiment, the dovetail-shaped slot 14 makes the opening end of the slot 14 smaller than the width of its internal channel. When the dovetail-shaped protrusion 15 is fully embedded in the dovetail-shaped slot 14, the protrusion 15 will not come out of the slot 14, making the connection between the two filter guide plates 1 more secure. Consequently, the multiple filter guide plates 1 as a whole are also more secure, which can meet the usage requirements.

[0025] In some other embodiments of this utility model, such as Figure 1 , Figure 2 and Figure 4 As shown, the protrusion 15 includes a snap-fit ​​portion 151 and a connecting portion 152. The connecting portion 152 connects the snap-fit ​​portion 151 and the side of the guide plate body 11, and the size of the connecting portion 152 is smaller than the size of the snap-fit ​​portion 151. Correspondingly, the shape of the slot 14 matches the shape of the protrusion 15. For example, both the connecting portion 152 and the snap-fit ​​portion 151 are rectangular, but the length of the connecting portion 152 is less than the length of the snap-fit ​​portion 151. To facilitate the snap-fit ​​portion 151 snapping into the corresponding position of the slot 14, both ends of the snap-fit ​​portion 151 are provided with rounded corners.

[0026] In this embodiment, when the protrusion 15 is inserted into the corresponding slot 14, since the size of the connecting part 152 is smaller than the size of the snap-fit ​​part 151, the protrusion 15 will not come out of the slot 14, making the connection between the two filter guide plates 1 more secure, and thus the multiple filter guide plates 1 as a whole are also more secure, which can meet the usage requirements.

[0027] Of course, in addition to the protrusion 15 and the slot 14 in the above embodiments, the protrusion 15 and the slot 14 can also be other shapes, as long as they are not easy to separate after being engaged and are firmly engaged.

[0028] In some embodiments of this utility model, the ratio of the area of ​​the multiple guide holes 13 to the cross-sectional area of ​​the guide plate body 11 is 0.5 to 0.8. This ratio is defined as the opening ratio. If the opening ratio is too small, fish waste will have difficulty entering the bottom channel of the guide plate body 11 through the guide holes 13, leading to untimely fish waste removal and deterioration of water quality. If the opening ratio is too large, it will reduce the strength of the guide plate body 11, making it prone to damage and failure. Experiments and calculations show that when the opening ratio is between 0.5 and 0.8, it ensures that fish waste can smoothly enter the bottom channel of the guide plate body 11 through the guide holes 13 for cleaning, while avoiding excessive opening that could cause structural fragility, reduced strength, and damage to the guide plate body 11.

[0029] In some embodiments of this utility model, such as Figure 1 and Figure 3 As shown, each support leg 12 has an anti-slip pad 16 at its bottom. In this embodiment, the anti-slip pad 16 significantly improves the static friction between the support leg 12 and the bottom surface of the upper cylinder 2, thereby solving the problem that the filter guide plate 1 is prone to sliding and shifting under the influence of water flow disturbance or fish activity.

[0030] Specifically, the anti-slip mat 16 can be made of a flexible material with a high coefficient of friction and good water resistance, such as natural rubber, silicone, thermoplastic elastomers, or modified polypropylene co-extruded materials. These materials not only possess excellent wet friction performance but also do not easily age or leach harmful substances under long-term immersion conditions, meeting the safety standards for aquarium equipment. The shape of the anti-slip mat 16 matches the shape of the bottom of the support leg 12, and the anti-slip mat 16 can be fitted onto the bottom of the support leg 12 or integrally molded with the support leg 12 through an injection molding process.

[0031] In some embodiments of this utility model, such as Figure 1 , Figure 2 and Figure 4 As shown, the cross-sectional shape of the guide vane body 11 is square.

[0032] In this embodiment, most aquariums have square or rectangular cross-sectional shapes. Therefore, using a square baffle plate body 11 can meet the usage requirements of most aquariums. Moreover, it is easy for users to accurately calculate the required number of filter baffle plates 1 based on the length and width of the aquarium, and achieve seamless horizontal and vertical connection. For example, if the size of the baffle plate body 11 is 10cm×10cm, then in a 60cm×40cm rectangular aquarium, only 6 pieces horizontally and 4 pieces vertically are needed to completely cover the bottom of the steel body. No cutting or adjustment is required, which greatly simplifies the installation process. It is particularly suitable for industrial mass production and home users' self-assembly, significantly improving the convenience of product use.

[0033] In some embodiments of this utility model, the cross-sectional shape of the guide plate body 11 is rectangular. For example, if the size of the guide plate body 11 is 20cm×10cm, then in a rectangular fish tank of 60cm×40cm, only 3 pieces horizontally and 4 pieces vertically need to be laid to completely cover the bottom of the steel body, which is also convenient for installation.

[0034] In some embodiments of this utility model, the cross-sectional shape of the guide plate body 11 is a regular polygon. In this embodiment, the regular polygonal guide plate body 11 further expands the application boundaries of the filter guide plate 1, and is especially suitable for regular polygonal aquariums. When the regular polygonal guide plate bodies 11 are spliced ​​together, a stable connection structure is formed, which not only improves the mechanical stability of the overall structure, but also enhances the resistance to displacement.

[0035] In some embodiments of this utility model, such as Figure 1 , Figure 2 and Figure 4 As shown, multiple guide holes 13 are arranged in a matrix.

[0036] In this embodiment, the matrix arrangement refers to the arrangement of the guide holes 13 in regular rows and columns, forming a grid-like structure. The matrix arrangement has clear directionality and symmetry; the guide holes 13 are equidistantly distributed along two mutually perpendicular directions, with consistent row and column spacing, facilitating drilling. This arrangement is suitable for environments where the sand and gravel particles are relatively large and evenly distributed, ensuring that the water flows smoothly along a regular path and avoiding the generation of local turbulence or eddies.

[0037] In some embodiments of this utility model, the multiple guide holes 13 are arranged in a honeycomb pattern.

[0038] In this embodiment, the honeycomb arrangement involves arranging the flow guide holes 13 in a tightly packed hexagonal pattern, with adjacent rows staggered to ensure that each hole is surrounded by six neighboring holes, forming a honeycomb-like structure. This staggered arrangement achieves a higher space density. Compared to a matrix arrangement with the same hole diameter and spacing, the honeycomb arrangement can accommodate more flow guide holes 13 per unit area, thus providing more flow channels at the same opening ratio and enhancing overall permeability.

[0039] In some embodiments of this utility model, the guide plate body 11 and multiple support legs 12 are integrally formed, and the guide plate body 11 and multiple support legs 12 are made of polypropylene, ceramic or stainless steel.

[0040] In this embodiment, the baffle body 11 and multiple support legs 12 are integrally molded, improving structural integrity and manufacturing efficiency. Polypropylene is a thermoplastic polymer material with excellent water resistance, chemical corrosion resistance, and electrical insulation properties. It is also non-toxic and odorless, meeting drinking water contact material standards. Polypropylene can be efficiently mass-produced through injection molding, making it suitable for manufacturing baffle bodies and support legs 12 with complex shapes and precise dimensions. Ceramic has advantages such as high strength, high hardness, wear resistance, high temperature resistance, and chemical corrosion resistance. Common ceramics such as alumina or silicon carbide can be used to make the baffle body 11. Their smooth surfaces are not prone to dirt adhesion, making cleaning and maintenance simple. Furthermore, ceramics are less prone to microcrack propagation or structural fatigue during long-term operation, making them suitable for aquariums with high requirements for long-term stability and visual appeal. Stainless steel is widely used due to its high tensile strength and excellent corrosion resistance. Stainless steel filter baffles 1 are suitable for large-volume, high-load public display aquariums, maintaining structural integrity even when subjected to heavy sand and gravel 6 or frequent water flow impacts.

[0041] Of course, in addition to the materials used in the above embodiments, the deflector body 11 and the multiple support legs 12 can also be made of other corrosion-resistant and high-strength materials, as long as they meet the usage requirements.

[0042] In some embodiments of this invention, the height of the filter guide plate 1 is less than or equal to 10mm. This is because during the aquarium manufacturing process, a ring of sealant is usually applied to the connection between the upper tank body 2 and the lower tank body 3. This sealant layer not only serves as a waterproof seal but also fills the joint and enhances the structural strength. The thickness of this sealant is generally controlled at 10mm. If the overall height of the filter guide plate 1 placed at the bottom of the upper tank body 2 exceeds this range, its edges or parts will protrude above the sealant layer, forming a noticeable bulge 15, which disrupts the overall aesthetic unity of the aquarium.

[0043] In this embodiment, by setting the height of the filter guide plate 1 to be less than or equal to 10mm, the entire filter guide plate 1 can be completely hidden under the sealant layer, so that the user cannot see the filter guide plate 1 from the outside of the fish tank, thus achieving "invisible installation". This not only ensures the structural integrity but also enhances the aesthetic value of the product.

[0044] In some embodiments of this invention, the height of the filter guide plate 1 is 10mm, the height of the guide plate body 11 is 3mm, and the height of the support leg 12 is 7mm. This arrangement not only makes the filter guide plate 1 lighter, reducing the pressure on the bottom of the upper cylinder 2, but also creates a larger space at the bottom of the guide plate body 11, facilitating the entry of fish waste through the guide hole 13 into the bottom space of the guide plate body 11. Of course, the guide plate body 11 and support leg 12 can also be set to other heights as needed.

[0045] In some embodiments of this utility model, multiple support legs 12 are respectively located at corresponding corners of the guide vane body 11. For example... Figure 1 As shown, when the deflector body 11 is square, there are four support legs 12, which are located at the four corners of the deflector body 11. Of course, support legs 12 can also be added in the middle of the deflector body 11 to improve the load-bearing capacity of the deflector body 11.

[0046] Support legs 12 are support structures connected to the bottom of the guide plate. Their main function is to raise the guide plate a certain distance, creating an unobstructed channel for fish waste to flow between it and the bottom of the aquarium. The number of support legs 12 can be flexibly set according to the size of the guide plate. A typical design uses four legs, located at the four corners of the guide plate. Auxiliary legs or strip support ribs can also be added in the middle to improve load-bearing stability. The height of the support legs 12 is generally set to 5mm to 7mm, ensuring sufficient flow space without excessively occupying vertical space. Support legs 12 can be integrally molded with the guide plate, improving structural integrity and manufacturing efficiency, or a modular assembly structure can be used for easy replacement or maintenance.

[0047] In some embodiments of this utility model, such as Figure 1 , Figure 2 and Figure 4 As shown, the guide hole 13 is circular, and its diameter is 3mm to 5mm. In this embodiment, the diameter of the guide hole 13 is set with full consideration of multiple factors such as hydrodynamic characteristics, the size of fish feces, and the size of sand and gravel 6, to ensure that the guide hole 13 can not only effectively guide the fish feces, but also prevent sand and gravel 6 from falling into the space below the guide plate.

[0048] In some embodiments of this utility model, the diameter of the guide hole 13 is 3mm, and sand 6 with a particle size greater than 5mm is evenly laid on the filter guide plate 1 with a thickness of 1cm to 5cm. Small fish such as tetras are raised in the upper tank 2. After 6 months of use, there is no obvious fish feces deposition in the sand 6 at the bottom of the upper tank 2, the water clarity is improved by 60% compared with existing aquariums, and there is no deformation or displacement of the filter guide plate 1. There is no leakage of sand 6 into the bottom space of the filter guide plate 1 at the joint.

[0049] In some other embodiments of this utility model, the diameter of the guide hole 13 is 5mm, and sand 6 with a particle size greater than 10mm is evenly laid on the filter guide plate 1 with a thickness of 5cm to 7cm. Larger fish such as parrotfish are raised in the upper tank 2. After 6 months of use, there is no obvious fish feces deposition in the sand 6 at the bottom of the upper tank 2, the water quality in the aquarium is stable, the load-bearing capacity of the filter guide plate 1 is good, and there is no deformation of the filter guide plate 1 or loosening of the joints.

[0050] This utility model also provides a fish tank, such as Figure 5 and Figure 6As shown, the aquarium includes an upper tank 2, a lower tank 3, a filter assembly 5 and a water pump 4 disposed within the lower tank 3, and multiple filter guide plates 1 for aquariums according to any of the above embodiments. A connecting hole 7 is provided between the upper tank 2 and the lower tank 3. Multiple filter guide plates 1 are disposed at the bottom of the upper tank 2, and adjacent guide plate bodies 11 are engaged by corresponding slots 14 and protrusions 15. The filter assembly 5 includes components such as filter cotton, biological filter media, and a dirt collection chamber, which are used to perform functions such as physical interception, biodegradation, and impurity removal. The water pump 4 is used to pump the filtered water into the upper tank 2.

[0051] In this embodiment of the aquarium, fish waste in the gaps between the gravel and sand is flushed by the water flow and enters the guide channel 17 through the guide hole 13. Since there are no obstructions in the guide channel 17, the fish waste can continue to flow into the lower tank 3 through the connecting hole 7. The fish waste is filtered by the filter assembly 5, purifying the water. The purified water is then pumped into the upper tank 2 by the water pump 4, achieving water circulation. The filter guide plate 1 of this invention can filter and guide fish waste from the gaps between the gravel and sand 6, cleaning the fish waste and purifying the water, thus preventing harm to the fish's health. Furthermore, because the filter guide plate 1 adopts a modular splicing design, it can be freely combined and expanded according to different aquarium sizes, significantly improving the product's versatility and adaptability, avoiding the increased costs associated with customized production. Moreover, when some filter guide plates 1 are damaged, only the damaged filter guide plates 1 need to be replaced, significantly reducing subsequent operating costs.

[0052] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A filter guide plate for a fish tank, characterized in that, The aquarium includes a guide plate body and multiple support legs connected to the bottom of the guide plate body, with a flow channel formed between the multiple support legs and the guide plate body; the guide plate body is used to support the sand and gravel in the aquarium. The guide plate body is provided with a plurality of vertically arranged guide holes that penetrate the guide plate body and the guide holes are connected to the guide channel; each side of the guide plate body is provided with a slot or a protrusion, and the shape of the slot matches the shape of the protrusion.

2. The filter guide plate for a fish tank according to claim 1, characterized in that, The protrusion is dovetail-shaped, and the small end of the dovetail is connected to the side of the guide plate body; or, the protrusion includes a snap-fit ​​part and a connecting part, the connecting part connects the snap-fit ​​part and the side of the guide plate body, and the size of the connecting part is smaller than the size of the snap-fit ​​part.

3. The filter guide plate for a fish tank according to claim 1, characterized in that, The ratio of the area of ​​the plurality of flow guide holes to the cross-sectional area of ​​the flow guide plate body is 0.5 to 0.

8.

4. The filter guide plate for a fish tank according to claim 1, characterized in that, Each of the support legs has an anti-slip pad at its bottom.

5. The filter guide plate for a fish tank according to claim 1, characterized in that, The cross-sectional shape of the guide plate body is square, rectangular, or regular polygonal.

6. The filter guide plate for a fish tank according to claim 1, characterized in that, The multiple flow guide holes are arranged in a matrix or honeycomb pattern.

7. The filter guide plate for a fish tank according to claim 1, characterized in that, The guide plate body and the multiple support legs are integrally formed, and the guide plate body and the multiple support legs are made of polypropylene, ceramic or stainless steel.

8. The filter guide plate for a fish tank according to claim 1, characterized in that, The height of the filter guide plate is less than or equal to 10mm.

9. The filter guide plate for a fish tank according to claim 1, characterized in that, The guide hole is circular, and the diameter of the guide hole is 3mm to 5mm.

10. A fish tank, comprising an upper tank body, a lower tank body, and a filter assembly and a water pump disposed within the lower tank body, wherein a communication hole is provided between the upper tank body and the lower tank body, characterized in that, It also includes a plurality of filter guide plates for a fish tank as described in any one of claims 1 to 9, wherein the plurality of filter guide plates are disposed at the bottom of the upper tank body, and adjacent two guide plate bodies are engaged by corresponding slots and protrusions.

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