Novel fish tank filtering barrel

By designing a detachable hollow column and filter cylinder structure in the aquarium filter canister, the problem of damaging beneficial bacteria when cleaning the coarse filter layer is solved, ensuring water purification effect and simplifying the cleaning process.

CN223969642UActive Publication Date: 2026-03-06ZHOUSHAN JIALU SHUIZU APPLIANCE MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-02
Publication Date
2026-03-06

AI Technical Summary

Technical Problem

Existing aquarium filter canisters are prone to damaging the beneficial bacteria already cultivated in other filter layers when cleaning the coarse filter layer, thus affecting the water purification effect.

Method used

A novel aquarium filter canister has been designed, featuring a hollow column and a detachable filter cartridge structure on the canister lid. Coarse filter cotton is placed inside the first filter cartridge, and the sealing cap is threadedly connected to the hollow column. The filter cotton can be replaced by unscrewing the sealing cap, thus avoiding interference with the beneficial bacteria in other filter layers.

Benefits of technology

It achieves the goal of maintaining the water purification effect without damaging the beneficial bacteria in other filter layers when replacing the coarse filter cotton, and simplifies the cleaning process.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223969642U_ABST
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Abstract

The utility model provides a novel fish tank filtering barrel which solves the problem that at present, mature beneficial bacteria in other filtering layers can be damaged when a coarse filtering layer is cleaned. The hollow column is arranged on the lower barrel cover and penetrates through the upper barrel cover, and a water through hole is formed in the bottom of the hollow column; one end of the water inlet channel communicates with the water inlet pipe, and the other end is located in the hollow column; the first filter cartridge is arranged in the hollow column, and the first filter cartridge is communicated with the water inlet channel; the second filter cartridge is arranged below the first filter cartridge and is matched with the water through hole; and the sealing cover is arranged on the top surface of the hollow column and presses the first filter cartridge. The sealing cover is in threaded connection with the hollow column, when the filter cotton needs to be replaced, only the sealing cover needs to be unscrewed, the first filter cartridge can be pulled out of the hollow column, meanwhile, water can flow into the barrel body from the water inlet channel through the water through hole to be filtered again, and beneficial bacteria of other filter layers cannot be affected.
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Description

Technical Field

[0001] This utility model relates to the field of aquarium supplies technology, specifically to a novel aquarium filter canister. Background Technology

[0002] A canister filter is an external filtration device that uses a water pump to drive water through multiple layers of filter elements to purify the water and maintain a clean, clear, and stable water quality in the aquarium. A canister filter typically consists of a lid and a canister body. The lid has inlet and outlet pipes, and the lid also houses the water pump. After a period of use, the filter elements (filter cotton or filter screen) need to be cleaned and replaced regularly to prevent clogging. Currently, the filter elements in a canister filter are generally located inside the canister body, with the coarse filter layer (coarse filter cotton) usually located at the bottom of the canister, as in a novel piston-type canister filter disclosed in Chinese Patent Publication No. CN206238122U. However, cleaning and replacing the filter elements requires opening the lid, and removing the filter elements at the bottom of the filter basket requires removing other filter layers as well. This may damage the beneficial bacteria that have matured in the other filter layers, thus affecting water purification. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model provides a new type of aquarium filter canister, which solves the problem that cleaning the coarse filter layer will destroy the beneficial bacteria that have been cultivated in other filter layers.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A novel aquarium filter canister includes a canister body and a canister lid. The canister lid includes an upper canister lid and a lower canister lid. The upper canister lid is provided with an inlet pipe and an outlet pipe. The filter canister also includes:

[0006] A hollow column is installed on the lower bucket lid and penetrates the upper bucket lid; the bottom of the hollow column is provided with a water passage hole.

[0007] The water inlet channel is connected to the water inlet pipe at one end and located inside the hollow column at the other end.

[0008] The No. 1 filter cartridge is detachably installed inside the hollow column. The No. 1 filter cartridge is connected to the water inlet channel, and the bottom of the No. 1 filter cartridge is provided with a No. 1 water outlet.

[0009] A sealing cap is placed on the top surface of the hollow column and presses down on the No. 1 filter cartridge. The sealing cap and the hollow column are detachably fitted.

[0010] The first filter cartridge includes a top cover and a cylinder body. The water inlet channel is located at the bottom of the cylinder body. The cylinder body is provided with a hollow tube for communicating with the water inlet channel. A connecting sleeve that mates with the top of the hollow tube is installed on the top cover. The top surface and circumferential surface of the connecting sleeve are respectively provided with gaps between the top surface and circumferential surface of the top cover.

[0011] A pivot is provided between the connecting sleeve and the top cover, and blades are provided around the pivot. Both the connecting sleeve and the top cover are made of transparent material.

[0012] A sealing ring is provided between the outer wall of the top cover and the inner wall of the hollow column.

[0013] The outer wall of the first filter cylinder is provided with a positioning groove, and the interior of the hollow column is provided with a protrusion for cooperating with the positioning groove.

[0014] Below the first filter cylinder is a second filter cylinder, which is detachably connected to the water passage hole. The second filter cylinder has a water inlet hole at the top and a second water outlet hole at the bottom.

[0015] The water passage is stepped, and the top of the second filter cylinder is provided with a retaining ring for engaging with the stepped surface of the water passage.

[0016] The top surface of the second filter cartridge is provided with a handle.

[0017] The barrel is equipped with stackable filter baskets, and the second filter cylinder passes through the filter baskets.

[0018] The beneficial effects of this utility model are:

[0019] The No. 1 filter cartridge contains coarse filter cotton. Water flows into the No. 1 filter cartridge from the inlet pipe through the inlet channel. After being filtered by the coarse filter cotton, it flows out from the No. 1 outlet and into the tank for further filtration. The sealing cap and the hollow column are connected by threads. When the filter cotton needs to be replaced, simply unscrew the sealing cap, and the No. 1 filter cartridge can be pulled out from the hollow column. At the same time, water can flow into the tank from the inlet channel through the water passage for further filtration, and then flow out through the outlet pipe. This will not affect the beneficial bacteria in other filter layers. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the present invention.

[0021] Figure 2 This is a cross-sectional schematic diagram showing the connection between the water inlet pipe and the No. 1 filter cylinder of this utility model.

[0022] Figure 3 This is a cross-sectional schematic diagram of the present invention.

[0023] Figure 4 This is a schematic diagram of the bottom of the No. 1 filter cylinder of this utility model.

[0024] Figure 5 This is a cross-sectional schematic diagram of the No. 1 filter cartridge of this utility model.

[0025] Figure 6 This is a schematic diagram of the lower bucket lid of this utility model.

[0026] Figure 7 This is a schematic diagram of the No. 2 filter cartridge of this utility model.

[0027] Figure 8 This is a schematic diagram of the bottom surface of the No. 2 filter cartridge of this utility model.

[0028] 1. Upper barrel cover; 2. Lower barrel cover; 3. Inlet pipe; 4. Hollow column; 5. Water passage hole; 6. Inlet channel; 7. Filter cylinder No. 1; 7. Top cover; 71. Cylinder body; 72. Hollow tube; 73. Connecting sleeve; 74. Rotating shaft; 75. Blade; 76. Outlet hole No. 1; 8. Filter cylinder No. 2; 9. Inlet hole; 10. Outlet hole No. 2; 11. Sealing cover; 12. Sealing ring; 13. Positioning groove; 14. Protrusion; 15. Retaining ring; 16. Handle; 17. Filter basket; 18. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0030] In the embodiments, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown, a novel aquarium filter canister includes a canister body and a canister lid. The canister lid includes an upper canister lid 1 and a lower canister lid 2. The upper canister lid 1 is provided with an inlet pipe 3 and an outlet pipe. It also includes:

[0031] A hollow column 4 is set on the lower bucket cover 2 and passes through the upper bucket cover 1. A water passage hole 5 is provided at the bottom of the hollow column 4.

[0032] The water inlet channel 6 is connected to the water inlet pipe 3 at one end and located inside the hollow column 4 at the other end.

[0033] The No. 1 filter cartridge 7 is detachably installed inside the hollow column 4. The No. 1 filter cartridge 7 is connected to the water inlet channel 6, and the bottom of the No. 1 filter cartridge 7 is provided with a No. 1 water outlet hole 8.

[0034] The sealing cover 12 is set on the top surface of the hollow column 4 and presses down the first filter cylinder 7. The sealing cover 12 and the hollow column 4 are detachably fitted.

[0035] Coarse filter cotton is placed inside the No. 1 filter cartridge 7. Water flows into the No. 1 filter cartridge 7 from the inlet pipe 3 through the inlet channel 6. After being filtered by the coarse filter cotton, it flows out from the No. 1 outlet hole 8 and into the tank for further filtration. The sealing cap 12 is threadedly connected to the hollow column 4. When the filter cotton needs to be replaced, simply unscrew the sealing cap 12, and the No. 1 filter cartridge 7 can be pulled out from the hollow column 4. At the same time, water can flow into the tank from the inlet channel 6 through the water passage hole 5 and then flow out through the outlet pipe. This will not affect the beneficial bacteria in other filter layers.

[0036] In the embodiments, such as Figure 2 , Figure 4 , Figure 5 As shown, the first filter cartridge 7 includes a top cover 71 and a cylinder 72. The water inlet channel 6 is located at the bottom of the cylinder 72. The cylinder 72 is provided with a hollow tube 73 for communicating with the water inlet channel. A connecting sleeve 74 that mates with the top of the hollow tube 73 is installed on the top cover 71. The top surface and circumferential surface of the connecting sleeve 74 are respectively provided with gaps from the top surface and circumferential surface of the top cover 71. Water can flow out from the circumference of the connecting sleeve 74 and then pass through the coarse filter cotton. The coarse filter cotton has a large working area and a good filtration effect.

[0037] In the embodiments, such as Figure 5 As shown, a rotating shaft 75 is provided between the connecting sleeve 74 and the top cover 71. The rotating shaft 75 has blades 76 arranged circumferentially. Both the connecting sleeve 74 and the top cover 71 are made of transparent material. The water flow rate can be determined by observing the rotation speed of the blades 76, thus indicating the clogging status of the coarse filter cotton.

[0038] In the embodiments, such as Figure 5 As shown, a sealing ring 13 is provided between the outer wall of the top cover 71 and the inner wall of the hollow column 4. This ensures the airtightness of the fit between the top cover 71 and the hollow column 4, preventing water from overflowing from the gap between them.

[0039] In the embodiments, such as Figure 4 , Figure 6 As shown, the outer wall of the first filter cylinder 7 is provided with a positioning groove 14, and the interior of the hollow column 4 is provided with a protrusion 15 for engaging with the positioning groove 14. The position of the first filter cylinder 7 within the hollow column 4 is positioned to ensure communication between the first filter cylinder 7 and the water inlet channel 6.

[0040] In the embodiments, such as Figure 2 , Figure 6 , Figure 7 , Figure 8As shown, a second filter cylinder 9 is located below the first filter cylinder 7. The second filter cylinder 9 is detachably connected to the water passage hole 5. The second filter cylinder 9 has a water inlet hole 10 at the top and a second water outlet hole 11 at the bottom. Fine filter cotton is placed inside the second filter cylinder 9. After water is filtered by the first filter cylinder 7, it enters the second filter cylinder 9, is filtered by the fine filter cotton, and then flows out from the second water outlet hole 11. The second filter cylinder 9 can also be pulled out from the water passage hole 5 for easy replacement.

[0041] In the embodiments, such as Figure 6 , Figure 7 , Figure 8 As shown, the water passage 5 is stepped, and the top of the second filter cylinder 9 is provided with a retaining ring 16 for engaging with the stepped surface of the water passage 5. The stepped surface of the water passage 5 supports the retaining ring 16, making it convenient to pick up and place the second filter cylinder 9.

[0042] In the embodiments, such as Figure 7 As shown, the top surface of the second filter cylinder 9 is provided with a handle 17, which facilitates the removal of the second filter cylinder 9 from the water inlet 5.

[0043] In the embodiments, such as Figure 2 , Figure 3 As shown, the barrel contains stackable filter baskets 18, through which the second filter cylinder 9 passes. Multiple filter baskets 18 can be used, and ceramic rings or activated carbon can be placed inside for water purification. Alternatively, volcanic rock, maifanite, or other filter materials can also be placed inside.

[0044] 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 new type of fish tank filter bucket, comprising a bucket body and a bucket cover, the bucket cover comprising an upper bucket cover (1) and a lower bucket cover (2), the upper bucket cover (1) being provided with a water inlet pipe (3) and a water outlet pipe, characterized in that, Also include: Hollow column (4) is arranged on the lower barrel cover (2) and penetrates the upper barrel cover (1), the bottom of the hollow column (4) is provided with water hole (5); Water inlet channel (6), one end is communicated with water inlet pipe (3), the other end is located in the hollow column (4); No. 1 filter cartridge (7) is detachably arranged in the hollow column (4), the no. 1 filter cartridge (7) is communicated with the water inlet channel (6), the bottom of the no. 1 filter cartridge (7) is provided with no. 1 water outlet hole (8); Sealing cover (12) is arranged on the top surface of the hollow column (4) and presses the no. 1 filter cartridge (7), the sealing cover (12) is detachably matched with the hollow column (4).

2. A new type of fish tank filter bucket as claimed in claim 1, characterized in that: The no. 1 filter cartridge (7) includes top cover (71) and cylinder (72), the water inlet channel (6) is located at the bottom of the cylinder (72), the cylinder (72) is provided with hollow tube (73) for communicating with the water inlet channel, the top cover (71) is provided with connecting sleeve (74) matched with the top of the hollow tube (73), the top surface and the peripheral surface of the connecting sleeve (74) are provided with gaps with the top surface and the peripheral surface of the top cover (71) respectively.

3. A novel fish tank filter bucket as claimed in claim 2, characterized in that: The connecting sleeve (74) and the top cover (71) are provided with rotating shaft (75), the peripheral surface of the rotating shaft (75) is provided with blade (76), the connecting sleeve (74) and the top cover (71) are made of transparent material.

4. A new type of fish tank filter bucket as claimed in claim 2, characterized in that: The outer wall of the top cover (71) and the inner wall of the hollow column (4) are provided with sealing ring (13).

5. A new type of fish tank filter bucket as claimed in claim 1, characterized in that: The outer wall of the no. 1 filter cartridge (7) is provided with positioning groove (14), the inside of the hollow column (4) is provided with protruding part (15) matched with the positioning groove (14).

6. A new type of fish tank filter bucket as claimed in claim 1, characterized in that: The no. 1 filter cartridge (7) is provided with no. 2 filter cartridge (9) below, the no. 2 filter cartridge (9) is detachably matched with the water hole (5), the top of the no. 2 filter cartridge (9) is provided with water inlet hole (10), and the bottom is provided with no. 2 water outlet hole (11).

7. A novel fish tank filter bucket as claimed in claim 6, characterized in that: The water hole (5) is in a stepped shape, and the top of the no. 2 filter cartridge (9) is provided with stop ring (16) matched with the stepped surface of the water hole (5).

8. A new type of fish tank filter bucket as claimed in claim 6, characterized in that: The top surface of the no. 2 filter cartridge (9) is provided with hand holding part (17).

9. A new type of fish tank filter bucket as claimed in claim 6, characterized in that: The barrel is provided with filter basket (18) that can be stacked up and down, and the no. 2 filter cartridge (9) penetrates the filter basket (18).

Citation Information

Patent Citations

  • Novel piston filter vat

    CN206238122U