Back filtering desktop fish tank

By introducing a multi-stage filtration system into the back filter aquarium, including physical and biological filter boxes and using filter media such as activated carbon, the problem of poor filtration effect in existing back filter aquariums has been solved, significantly improving water quality and enhancing the living environment for fish.

CN224139921UActive Publication Date: 2026-04-21SENSEN GRP
View PDF 1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SENSEN GRP
Filing Date
2025-04-30
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

Existing back-filter aquariums have poor filtration performance, and the filter cotton easily absorbs dirt, leading to water quality deterioration and affecting the health of fish.

Method used

It adopts a multi-stage filtration system, including a physical filter box, a biological filter box, and a second filtration zone, which respectively use activated carbon filter media, ion exchange resin filter media, and KDF filter media. Combined with the water pump and flow channel design, it achieves multi-layer filtration.

Benefits of technology

It improves water quality and enhances the living environment for fish. Through the combination of multiple layers of filter materials, it significantly improves water quality and enhances the survival ability of fish.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224139921U_ABST
    Figure CN224139921U_ABST
Patent Text Reader

Abstract

The utility model provides a back filtering table top fish tank which solves the problem that an existing back filtering fish tank is poor in filtering effect. The physical filtering box is arranged in the filtering bin, the water pump is connected with the physical filtering box, and the filtering cotton is arranged in the physical filtering box and is close to a water inlet of the physical filtering box; the No.1 filtering area is arranged between the filtering cotton and the water outlet of the physical filtering box; the biochemical filtering box is arranged in the filtering bin and is connected with the water outlet of the physical filtering box; and the second filtering area is arranged in the biochemical filtering box. Water enters the physical filtering box, passes through the filtering cotton and then enters the first filtering area, the water is filtered again through the filtering material in the first filtering area, then enters the biochemical filtering box, is filtered through the biochemical balls, the ceramic rings and other filtering materials in the second filtering area and then is discharged, the water quality is effectively improved, and then the survival ability of fishes is improved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of aquarium products technology, specifically to a desktop fish tank with a back filter. Background Technology

[0002] With the rise of the aquarium industry, desktop fish tanks have gradually moved from homes and offices into more commercial spaces. Fish tanks are generally equipped with filters, which remove impurities from the water before returning it to the tank, cleaning the water and preventing excessive bacteria from causing fish deaths.

[0003] Chinese Patent Publication No. CN218278318U discloses a back-filter aquarium. The back-filter device includes a back filter baffle, filter cotton and a water pump located behind the back filter baffle. The advantage of the back-filter aquarium is that the aquarium and the filter form a whole, which looks clean and neat. However, the filtration effect is limited because it is close to the filter cotton. The filter cotton absorbs a lot of dirt, which can easily lead to the deterioration of water quality and thus affect the health of the fish. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this utility model provides a desktop aquarium with a back filter, which solves the problem of poor filtration effect in existing back filter aquariums.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A desktop aquarium with back filter includes a tank body, a filter chamber inside the tank body, a water pump and filter cotton inside the filter chamber, and further includes:

[0007] A physical filter box is installed inside the filter chamber. The water pump is connected to the physical filter box. The filter cotton is installed inside the physical filter box and close to the water inlet of the physical filter box.

[0008] The first filtration zone is located between the filter cotton and the outlet of the physical filter box.

[0009] The biological filter box is installed inside the filter chamber and connected to the outlet of the physical filter box.

[0010] The second filtration zone is located inside the biochemical filtration box.

[0011] The No. 1 filtration zone is equipped with activated carbon filter media, ion exchange resin filter media, and KDF filter media.

[0012] The No. 1 filtration zone is provided with flow channels on both sides, and the No. 1 filtration zone, flow channels, and physical filter box outlet are connected in sequence.

[0013] The biochemical filter box has a connector slot at its outlet.

[0014] The physical filter box is equipped with a support strip to support the filter cotton, and the support strip is close to the water inlet surface of the filter cotton.

[0015] The bottom of the filter chamber is provided with a water inlet, and a sand baffle is provided at the water inlet.

[0016] It also includes a mounting frame and a cylinder head. The cylinder head has a mounting groove at both the front and rear ends of its bottom surface. The mounting frame has a protrusion on its top surface that mates with the mounting groove. There is a gap between the cylinder head and the mounting frame.

[0017] The bottom surface of the cylinder head is provided with a second protrusion, and the side of the second protrusion is provided with a second mounting groove for cooperating with the first protrusion.

[0018] The cylinder head is equipped with an automatic feeder.

[0019] The cylinder head is equipped with a power plug, and the other end of the water pump wire is mounted on the mounting frame. The power plug and the other end of the water pump wire are connected via a POGOPIN method.

[0020] The beneficial effects of this utility model are:

[0021] Water enters the physical filter box and passes through the filter cotton before entering the first filtration zone. The filter media in the first filtration zone further filters the water before it enters the biological filter box. Then, it is filtered by the biological balls, ceramic rings, and other filter media in the second filtration zone before being discharged. The water quality is effectively improved, thereby enhancing the survival ability of fish. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the present invention.

[0023] Figure 2 This is a schematic diagram of the interior of the cylinder body of this utility model.

[0024] Figure 3 This is a schematic diagram of the filter box connection structure of this utility model.

[0025] Figure 4 This is a cross-sectional schematic diagram of the physical filter box of this utility model.

[0026] Figure 5 This is a schematic diagram of the first filter zone of this utility model.

[0027] Figure 6 This is a cross-sectional schematic diagram of the biochemical filter box of this utility model.

[0028] Figure 7 This is a schematic diagram of the mounting frame of this utility model.

[0029] Figure 8This is a schematic diagram of the cylinder head of this utility model.

[0030] Filter chamber 1, water pump 2, filter cotton 3, physical filter box 4, No. 1 filter zone 5, biological filter box 6, No. 2 filter zone 7, flow channel 8, insertion slot 9, support bar 10, water inlet hole 11, sand baffle 12, mounting frame 13, cylinder head 14, No. 1 mounting slot 15, No. 1 protrusion 16, No. 2 protrusion 17, No. 2 mounting slot 18, automatic feeder 19, power plug 20. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0032] In the embodiments, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown in Figure 6, a back-filter desktop aquarium includes a tank body, a filter chamber 1 inside the tank body, a water pump 2 and filter cotton 3 inside the filter chamber 1, and further includes:

[0033] A physical filter box 4 is installed inside the filter chamber 1. The water pump 2 is connected to the physical filter box 4. The filter cotton 3 is installed inside the physical filter box 4 and close to the water inlet of the physical filter box 4.

[0034] The first filtration zone 5 is located between the outlet of the filter cotton 3 and the physical filter box 4.

[0035] The biochemical filter box 6 is installed inside the filter chamber 1 and connected to the outlet of the physical filter box 4.

[0036] The second filtration zone, 7, is located inside the biochemical filter box.

[0037] Water enters the physical filter box 4 and passes through the filter cotton 3 before entering the first filter zone 5. The filter media in the first filter zone 5 further filters the water before it enters the biological filter box 6. Then, it is filtered by the biological balls, ceramic rings, and other filter media in the second filter zone 7 before being discharged. The water quality is effectively improved, thereby enhancing the survival ability of fish.

[0038] In the embodiments, such as Figure 4 As shown, the first filtration zone 5 is equipped with activated carbon filter media, ion exchange resin filter media, and KDF filter media. The activated carbon filter media, ion exchange resin filter media, and KDF filter media are placed within the first filtration zone 5, and due to the circulating water, the filtration effect is good.

[0039] In the embodiments, such as Figure 5As shown, flow channels 8 are provided on both sides of the first filtration zone 5, and the first filtration zone 5, flow channels 8, and outlet of the physical filter box 4 are connected in sequence. After filtration, the water flows out from both sides of the first filtration zone 5, and the water is in full contact with the filter material in the first filtration zone 5, resulting in good filtration effect.

[0040] In the embodiments, such as Figure 3 As shown, the biochemical filter box 6 has a connector slot 9 at its outlet. A waterfall-style or silent outlet can be installed at the connector slot 9 according to customer needs; a drain connector can also be installed for drainage.

[0041] In the embodiments, such as Figure 4 As shown, the physical filter box 4 is equipped with a support strip 10 for supporting the filter cotton, and the support strip 10 is close to the water inlet surface of the filter cotton 3. This allows the water to have full contact with the filter cotton 3, resulting in a good filtration effect.

[0042] In the embodiments, such as Figure 2 As shown, the bottom of the filter chamber 1 is provided with a water inlet 11, and a sand baffle 12 is provided at the water inlet 11. This is used to prevent bottom sand from entering the filter chamber 1. The sand baffle 12 can slide up and down and can be adjusted according to customer needs.

[0043] In the embodiments, such as Figure 1 , Figure 7 , Figure 8 As shown, the system also includes a mounting frame 13 and a tank cover 14. The tank cover 14 has a mounting groove 15 at both the front and rear ends of its bottom surface. The mounting frame 13 has a protrusion 16 on its top surface that mates with the mounting groove 15. A gap exists between the tank cover 14 and the mounting frame 13. The tank cover 14 is easy to install and remove, and the gap between the tank cover and the mounting frame 13 allows water vapor to escape from the aquarium, preventing fogging on the inner wall of the tank.

[0044] In the embodiments, such as Figure 7 , Figure 8 As shown, the bottom surface of the cylinder head 14 is provided with a second protrusion 17, and the side of the second protrusion 17 is provided with a second mounting groove 18 for engaging with the first protrusion 16. When the cylinder head 14 is opened, the second mounting groove 18 can engage with the first protrusion 16, and the cylinder head 14 is arranged perpendicular to the horizontal plane and installed on the mounting frame 13, allowing for the replacement of the filter material.

[0045] In the embodiments, such as Figure 1 As shown, an automatic feeder 19 is provided on the cylinder cover 14 to enable automated feeding of fish.

[0046] In the embodiments, such as Figure 7 , Figure 8As shown, a power plug 20 is provided on the cylinder head 14, and the other end of the water pump 2's power cord is mounted on the mounting frame 13. The power plug 20 and the other end of the water pump 2's power cord are connected via a POGOPIN method. When the cylinder head 14 is opened to replace the filter material, the water pump automatically shuts off and stops running, without requiring any on / off switching.

[0047] Obviously, the above embodiments of this utility model are merely illustrative examples and not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, these obvious variations or modifications derived from the essential spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. A back filter desktop fish tank, comprising a tank body, a filter bin (1) is arranged in the tank body, a water pump (2) and filter cotton (3) are arranged in the filter bin (1), characterized in that, Also includes: A physical filter box (4) is set inside the filter chamber (1). The water pump (2) is connected to the physical filter box (4). The filter cotton (3) is set inside the physical filter box (4) and close to the water inlet of the physical filter box (4). The first filtration zone (5) is located between the outlet of the filter cotton (3) and the physical filter box (4); A biochemical filter box (6) is installed inside the filter chamber (1) and connected to the outlet of the physical filter box (4); The second filtration zone (7) is located inside the biochemical filtration box.

2. A reverse filtration table-top fish tank as claimed in claim 1 wherein: The No. 1 filtration zone (5) is equipped with activated carbon filter material, ion exchange resin filter material and KDF filter material.

3. A reverse filtration desktop fish tank as claimed in claim 1, wherein: The No. 1 filtration zone (5) is provided with flow channels (8) on both sides, and the No. 1 filtration zone (5), flow channels (8), and physical filter box (4) outlet are connected in sequence.

4. A reverse filtration desktop fish tank as claimed in claim 1, wherein: The biochemical filter box (6) is provided with a connector slot (9) at the outlet.

5. A reverse filtration desktop fish tank as claimed in claim 1, wherein: The physical filter box (4) is provided with a support strip (10) for supporting the filter cotton, and the support strip (10) is close to the water inlet surface of the filter cotton (3).

6. A reverse filtration desktop fish tank as claimed in claim 1, wherein: The bottom of the filter chamber (1) is provided with a water inlet (11), and a sand baffle (12) is provided at the water inlet (11).

7. A reverse filtration desktop fish tank as claimed in claim 1, wherein: It also includes a mounting frame (13) and a cylinder head (14). The cylinder head (14) has a mounting groove (15) at both the front and rear ends of its bottom surface. The mounting frame (13) has a protrusion (16) on its top surface for engaging with the mounting groove (15). There is a gap between the cylinder head (14) and the mounting frame (13).

8. A reverse filtration table-top fish tank as claimed in claim 7 wherein: The bottom surface of the cylinder head (14) is provided with a second protrusion (17), and the side of the second protrusion (17) is provided with a second mounting groove (18) for cooperating with the first protrusion (16).

9. A reverse filtration table-top fish tank as claimed in claim 7, wherein: An automatic feeder (19) is provided on the cylinder head (14).

10. A reverse filtration table-top fish tank as claimed in claim 7, wherein: The cylinder head (14) is provided with a power plug (20), and the other end of the water pump (2) wire is set on the mounting frame (13). The power plug (20) is connected to the other end of the water pump (2) wire via a POGOPIN method.

Citation Information

Patent Citations

  • Back filtering fish tank

    CN218278318U