A fish tank filtration device

By designing a vertically detachable filter cartridge assembly and a multi-stage filter tank structure in the aquarium filter, the problems of large size and inconvenient cleaning of existing aquarium filters are solved, achieving efficient filtration and enhanced dissolved oxygen.

CN224419796UActive Publication Date: 2026-06-30ZHONGSHAN LESHI AQUATIC PROD CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHONGSHAN LESHI AQUATIC PROD CO LTD
Filing Date
2025-06-19
Publication Date
2026-06-30

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  • Figure CN224419796U_ABST
    Figure CN224419796U_ABST
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Abstract

This utility model discloses an aquarium filtration device, including an aquarium and a filter tank disposed on the lower side of the aquarium. The filter tank includes multiple lower bottom filter tanks connected in sequence and an upper bottom filter tank disposed on the upper side of the first lower bottom filter tank and connected to the first lower bottom filter tank. A water inlet pipe is connected between the aquarium and the upper bottom filter tank, and a water outlet pipe is connected between the last lower bottom filter tank and the aquarium. The upper bottom filter tank is provided with multiple vertically arranged and detachable filter cartridge assemblies. The upper opening height of the filter cartridge assembly is lower than the side height of the upper bottom filter tank, and the lower end of the filter cartridge assembly is connected to the first lower bottom filter tank. The filter cartridge assembly filters impurities and foreign objects in the water, resulting in good filtration effect. At the same time, the filtered water drips into the lower bottom filter tank, which can increase the dissolved oxygen in the water. This structure is small in size, occupies little space, and the filter cartridge assemblies are centrally arranged, making it easy to clean and replace.
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Description

[Technical Field]

[0001] This utility model relates to a fish tank filtration device. [Background Technology]

[0002] In existing aquarium filters, aquarium water enters the downspout pipe through the inlet pipe and drips into the wet-dry separation box below. This achieves the purpose of increasing dissolved oxygen in the water through the downspout pipe and filtering fish waste and uneaten food through the wet-dry separation box. However, this structure is bulky and requires a lot of space. Fish waste and uneaten food can easily clog the drip holes of the downspout pipe. At the same time, its large size makes it inconvenient to clean the wet-dry separation box. [Utility Model Content]

[0003] This invention overcomes the shortcomings of the prior art and provides a fish tank filtration device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A fish tank filtration device is characterized in that it includes a fish tank and a filter tank disposed on the lower side of the fish tank. The filter tank includes a plurality of lower bottom filter tanks connected in sequence and an upper bottom filter tank disposed on the upper side of the first lower bottom filter tank and connected to the first lower bottom filter tank. A water inlet pipe is connected between the fish tank and the upper bottom filter tank, and a water outlet pipe is connected between the last lower bottom filter tank and the fish tank. The upper bottom filter tank is provided with a plurality of vertically arranged and detachable filter cylinder assemblies. The upper opening height of the filter cylinder assembly is lower than the side height of the upper bottom filter tank, and the lower end of the filter cylinder assembly is connected to the first lower bottom filter tank.

[0006] The aquarium filtration device described above is characterized in that: an mounting boss is provided inside the upper bottom filter tank, the lower end of the mounting boss is connected to the lower bottom filter tank at the front end, and filter cylinder assemblies are respectively vertically mounted on the mounting boss.

[0007] The aquarium filtration device described above is characterized in that: the upper side of the mounting boss is provided with a plurality of boss through holes, and a limiting boss ring is provided in the boss through hole to fix the filter cylinder assembly in the boss through hole.

[0008] The aquarium filtration device described above is characterized in that: the filter cylinder assembly includes an outer cylinder with openings at both ends, a cylinder cover connected to the upper end of the outer cylinder to cooperate with a limiting protrusion ring, the cylinder cover having a cylinder cover through hole and a handle, and a detachable microporous ceramic particle filter element inside the outer cylinder.

[0009] The aquarium filtration device described above is characterized in that: a filter tank groove is provided inside the upper bottom filter tank on the outside of the mounting boss, and the water outlet end of the water inlet pipe extends into the filter tank groove.

[0010] The aquarium filtration device described above is characterized in that: an upper baffle plate with a lower end connected between adjacent lower bottom filter tanks is provided; a lower baffle plate is provided in the middle of the lower bottom filter tank except for the first and last ends; the lower baffle plate is located in front of the upper baffle plate; the height of the lower baffle plate is less than the height of the upper baffle plate; and the lower baffle plate and the upper baffle plate form a water passage.

[0011] The aquarium filtration device described above is characterized in that: a filter screen frame is provided near the bottom surface inside the lower bottom filter tank (excluding the end), and the height of the filter screen frame is higher than the height of the lower side baffle of the filter tank.

[0012] The aquarium filtration device described above is characterized in that: a connecting support rod is provided on the bottom inner surface of the lower bottom filter tank, and the filter screen frame is mounted on the connecting support rod.

[0013] The beneficial effects of this utility model are:

[0014] This utility model features an upper bottom filter cylinder positioned above the lower bottom filter cylinder at the head end, and multiple vertically arranged and detachable filter cartridge assemblies within the upper bottom filter cylinder. These filter cartridge assemblies effectively filter impurities and foreign objects from the water. Simultaneously, the filtered water drips into the lower bottom filter cylinder, increasing the dissolved oxygen content in the water. This structure is compact, occupies little space, and the filter cartridge assemblies are centrally located, facilitating cleaning and replacement. [Image Description]

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is an exploded view of the present invention;

[0017] Figure 3 This is an exploded view of the filter cylinder of this utility model. [Detailed Implementation]

[0018] The technical solutions in the embodiments of this utility model will now be clearly and completely described in conjunction with the accompanying drawings.

[0019] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indication will also change accordingly. Furthermore, descriptions involving "preferred," "second-best," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "preferred" or "second-best" may explicitly or implicitly include at least one of those features.

[0020] like Figure 1-3 As shown, a fish tank filtration device includes a fish tank 1 and a filter tank 2 disposed below the fish tank 1. The filter tank 2 includes multiple lower bottom filter tanks 21 connected in sequence and an upper bottom filter tank 22 disposed above and connected to the first lower bottom filter tank 21. A water inlet pipe 3 connects the fish tank 1 and the upper bottom filter tank 22, and a water outlet pipe 4 connects the last lower bottom filter tank 21 to the fish tank 1. Multiple vertically arranged and detachable filter cartridge assemblies 5 are provided inside the upper bottom filter tank 22. The upper opening height of the filter cartridge assembly 5 is lower than the side height of the upper bottom filter tank 22, and the lower end of the filter cartridge assembly 5 is connected to the first lower bottom filter tank 21. Filtering components such as filter cotton can be installed in each lower bottom filter tank 21 before filtration. During filtration, water from aquarium 1 flows into the upper bottom filter tank 22 of filter tank 2 through inlet pipe 3. The water level in the upper bottom filter tank 22 rises, causing the water to pass through each filter cartridge assembly 5 and flow into the lower bottom filter tank 21 at the beginning. The water then flows sequentially through each lower bottom filter tank 21 and returns to aquarium 1 through outlet pipe 4 in the lower bottom filter tank 21 at the end. In this design, the outlet pipe 4 is also connected to a filter cartridge assembly. A water pump drives the water through the filter cartridge assembly before it returns to aquarium 1. The filter cartridge assembly effectively filters impurities and foreign objects from the water. Simultaneously, the filtered water drips into the lower bottom filter tank, increasing dissolved oxygen levels. This structure is compact, occupies little space, and the filter cartridges are centrally located for easy cleaning and replacement.

[0021] like Figure 2-3 As shown, the upper bottom filter cylinder 22 is provided with a mounting boss 23. The lower end of the mounting boss 23 is connected to the lower bottom filter cylinder 21 at the head end. The filter cylinder assemblies 5 are respectively vertically arranged on the mounting boss 23, which can make the filter cylinder assemblies 5 centrally arranged.

[0022] like Figure 3 As shown, the upper side of the mounting boss 23 is provided with multiple boss through holes 231. A limiting protrusion ring 232 is provided within each boss through hole 231 to fix the filter cartridge assembly 5 within the boss through hole 231. The filter cartridge assembly 5 includes an outer cylinder 51 with openings at both ends. A cylinder cover 52 that mates with the limiting protrusion ring 232 is connected to the upper end of the outer cylinder 51. The cylinder cover 52 is provided with a cylinder cover through hole 53 and a handle 54. A detachable microporous ceramic particle filter element is provided inside the outer cylinder 51. When installing or removing the filter cartridge assembly 5, the filter cartridge assembly 5 is lifted or placed within the boss through hole 231 using the handle 54, facilitating quick installation or removal of the filter cartridge assembly 5 into the mounting boss 23.

[0023] like Figure 2-3 As shown, the upper bottom filter cylinder 22 has a filter cylinder groove 24 located outside the mounting boss 23. The water outlet end of the water inlet pipe 3 extends into the filter cylinder groove 24 to reduce water flow noise.

[0024] like Figure 2-3 As shown, adjacent lower bottom filter cylinders 21 are provided with upper filter cylinder baffles 25 that are connected at their lower ends. The middle lower bottom filter cylinder 21, excluding the first and last ends, is provided with a lower filter cylinder baffle 26. The lower filter cylinder baffle 26 is located in front of the upper filter cylinder baffle 25. The height of the lower filter cylinder baffle 26 is less than the height of the upper filter cylinder baffle 25, and the lower filter cylinder baffle 26 and the upper filter cylinder baffle 25 form a water passage. The lower bottom filter cylinder 21, excluding the last end, is provided with a filter screen frame 6 near the bottom surface. The height of the filter screen frame 6 is higher than the height of the lower filter cylinder baffle 26. The bottom surface of the inner side of the lower bottom filter cylinder 21 is provided with a connecting rod 27, and the filter screen frame 6 is placed on the connecting rod 27 to improve the filtration effect of the bottom filter cylinder 21.

[0025] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A fish tank filtration device, characterized in that: The system includes a fish tank (1) and a filter tank (2) located on the lower side of the fish tank (1). The filter tank (2) includes multiple lower bottom filter tanks (21) connected in sequence and an upper bottom filter tank (22) located on the upper side of the lower bottom filter tank (21) at the first end and connected to the lower bottom filter tank (21). A water inlet pipe (3) is connected between the fish tank (1) and the upper bottom filter tank (22). A water outlet pipe (4) is connected between the lower bottom filter tank (21) at the end and the fish tank (1). The upper bottom filter tank (22) is provided with multiple vertically arranged and detachable filter cylinder assemblies (5). The upper opening height of the filter cylinder assembly (5) is lower than the side height of the upper bottom filter tank (22), and the lower end of the filter cylinder assembly (5) is connected to the lower bottom filter tank (21) at the first end.

2. The aquarium filtration device according to claim 1, characterized in that: The upper bottom filter cylinder (22) is provided with a mounting boss (23). The lower end of the mounting boss (23) is connected to the lower bottom filter cylinder (21) at the head end. The filter cylinder assembly (5) is vertically mounted on the mounting boss (23).

3. The aquarium filtration device according to claim 1, characterized in that: The mounting boss (23) has multiple boss through holes (231) on its upper side, and a limiting boss ring (232) is provided in the boss through hole (231) to fix the filter cartridge assembly (5) in the boss through hole (231).

4. The aquarium filtration device according to claim 3, characterized in that: The filter cartridge assembly (5) includes an outer cylinder (51) with openings at both ends. The upper end of the outer cylinder (51) is connected to a cylinder cover (52) that cooperates with a limiting protrusion ring (232). The cylinder cover (52) is provided with a cylinder cover through hole (53) and a handle (54). The outer cylinder (51) is provided with a detachable microporous ceramic particle filter element.

5. The aquarium filtration device according to claim 2, characterized in that: The upper bottom filter cylinder (22) has a filter cylinder groove (24) located outside the mounting boss (23), and the water outlet end of the water inlet pipe (3) extends into the filter cylinder groove (24).

6. The aquarium filtration device according to claim 1, characterized in that: The adjacent lower bottom filter cylinders (21) are provided with a filter cylinder upper baffle (25) with the lower end connected. The middle lower bottom filter cylinder (21) except for the first and last ends is provided with a filter cylinder lower baffle (26). The filter cylinder lower baffle (26) is located in front of the filter cylinder upper baffle (25). The height of the filter cylinder lower baffle (26) is less than the height of the filter cylinder upper baffle (25), and the filter cylinder lower baffle (26) and the filter cylinder upper baffle (25) form a water channel.

7. The aquarium filtration device according to claim 6, characterized in that: A filter screen frame (6) is provided near the bottom surface inside the lower bottom filter cylinder (21) except for the end. The setting height of the filter screen frame (6) is higher than the setting height of the lower side baffle (26) of the filter cylinder.

8. The aquarium filtration device according to claim 7, characterized in that: A connecting rod (27) is provided on the inner bottom surface of the lower bottom filter cylinder (21), and the filter screen frame (6) is set on the connecting rod (27).