A filter for an aquarium

Abstract

This utility model provides a filter for aquariums, including a filter body, an inlet, an outlet, a water pump, a UV lamp assembly, and a filter assembly. The filter assembly includes a filter media box and a filter bag. The filter bag is fitted over the outside of the filter media box, covering its sides and bottom, forming a coaxial structure of "filter media core + outer filter bag". Water flows through the UV lamp for sterilization and then enters the filter media box. After the filter media adjusts the water quality, it flows through the filter bag to remove impurities, thus achieving dual filtration. This compact design effectively reduces the size of the equipment, improves filtration efficiency, and is easy to maintain, making it suitable for purification and circulation systems in small aquariums.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, specifically to a filter for aquariums. Background Technology

[0002] In the aquarium industry, filters, as core equipment for maintaining water quality and ensuring the healthy growth of aquatic organisms, are mainly divided into two types: built-in and external. Currently, traditional filters generally employ a design where the filter media box and filter bag are separate. Taking aquarium canister filters as an example, the filter bag is usually installed independently at the water inlet, serving the function of initially intercepting large particles of impurities; while the filter media box is located inside the canister, filled with filter media such as activated carbon and bio-balls to achieve deeper water treatment.

[0003] However, this separate structure has significant drawbacks: the filter bag expands in volume as water fills during use, taking up a large amount of space; simultaneously, the filter media box requires independent installation space, both contributing to the overall complex and bulky structure of the filter. This design not only limits its application in small aquariums but also affects the overall aesthetics due to the dispersed layout of components and increases maintenance difficulty. In particular, the independent installation of the filter media box and filter bag results in low utilization of the internal space of the equipment. Utility Model Content

[0004] This invention provides a filter for aquariums to solve the technical problems mentioned in the background section.

[0005] To achieve the above-mentioned objectives, this utility model adopts the following technical solution:

[0006] A filter for aquariums, characterized in that it comprises: a filter body having an inlet and an outlet, and an internal cavity for water flow; a detachable filter assembly having a filter media box having an inlet on its top surface and an outlet on its bottom surface, the filter media box being filled with water quality conditioning filter media; and a filter bag fitted over the outside of the filter media box and covering the outlet to further filter the water flowing through the filter media box.

[0007] The water inlet is connected to the water inlet hole of the filter media box, and the drain outlet is connected to the outside of the filter bag.

[0008] Furthermore, the filter media box includes a lid and at least one box body, the lid being detachably connected to the at least one box body.

[0009] Furthermore, the lid and each box body are equipped with a plug-in component. The bottom of the lid and the box body have plug-in interfaces, and the top of the box body has a plug-in block.

[0010] Furthermore, the water inlet is located on the top surface of the lid, and the water outlet is located on the bottom surface of the box body.

[0011] Furthermore, the side of the lid is provided with a snap-fit ​​opening, and the opening of the filter bag is fitted onto the snap-fit ​​opening. The filter bag is made of flexible, water-permeable material.

[0012] Furthermore, the filter body has a partition inside, which divides the receiving cavity into a first receiving cavity and a second receiving cavity, and the filter assembly is detachably installed into the second receiving cavity.

[0013] Furthermore, the filter body includes a UV lamp mounting box, which is fixedly installed in the first receiving cavity, and a UV lamp is provided inside the UV lamp mounting box.

[0014] Furthermore, the lower end of the UV lamp mounting box is provided with a UV lamp mounting box water inlet, and the upper end is provided with a UV lamp mounting box water outlet; the UV lamp mounting box water outlet is connected to the water inlet, and the UV lamp mounting box water inlet is connected to the water inlet.

[0015] Furthermore, a water pump is installed inside the first receiving cavity.

[0016] Furthermore, the inlet is detachably equipped with an inlet pipe, and an oil film adsorption pipe is installed on the inlet pipe.

[0017] The advantages of this utility model over the prior art are as follows:

[0018] This utility model adopts a structural design where the filter media box and filter bag are coaxially fitted, achieving a compact combination of "filter media box core + outer filter bag". This design effectively reduces the space waste caused by the separate placement of the filter media box and filter bag in traditional filters, making the filter more compact and structurally more rational. The filter media box can accommodate various functional filter media for water quality regulation, such as activated carbon adsorption, release of beneficial minerals, and bio-cultured bacteria, achieving multiple water purification functions. Simultaneously, the fitted filter bag uses a flexible, permeable material to effectively capture large particles of impurities in the water, completing secondary mechanical filtration, preventing filter media clogging, improving filtration efficiency, extending the service life of the filter media and filter bag, and reducing maintenance frequency. Overall, this structural design achieves a rational division of labor between filter media and impurity interception, significantly improving the purification effect and system stability of aquarium filtration. Attached Figure Description

[0019] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof. In the drawings:

[0020] Figure 1 This is a three-dimensional schematic diagram of the filter of this utility model.

[0021] Figure 2 This is a three-dimensional schematic diagram of the filter assembly of this utility model.

[0022] Figure 3 This is an exploded view of the filter assembly of this utility model.

[0023] Figure 4 This is an exploded view of the filter of this utility model.

[0024] Figure 5 This is a schematic diagram of the structure of the filter of this utility model.

[0025] Figure 6 This is a front view of the filter of this utility model.

[0026] Figure 7 for Figure 6 AA cross-sectional view of the filter.

[0027] Reference numerals: filter body (1); partition (11); first receiving cavity (12); second receiving cavity (13); fixing rib (131); drain outlet (14); water inlet (15); filter media box (2); box cover (21); water inlet hole (211); bayonet (212); water blocking part (213); box body (22); water outlet hole (221); filter bag (3); bag opening (31); water inlet pipe (4); oil film adsorption pipe (41); UV lamp mounting box (5); UV lamp mounting box water inlet hole (51); UV lamp mounting box water outlet hole (52); mounting cover (6); fixing part (61); UV lamp (7); plug-in part (71); water pump (8); top cover (9); hanging part (10). Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. The following description of at least one exemplary embodiment is illustrative in nature and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0030] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as exemplary rather than limiting. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0031] like Figure 1 and Figure 4 As shown, an embodiment of the aquarium filter of this utility model includes a filter body 1, with a drain outlet 14 and a water inlet 15 on its exterior. The water inlet 15 is used to supply water from the aquarium into the filter body 1, and the drain outlet 14 is used to discharge the filtered water back into the aquarium, achieving water circulation. The filter body 1 has an internal cavity containing a partition 11, which is an integrally molded structure. The partition 11 divides the cavity into a first cavity 12 and a second cavity 13. The water inlet 15 is located on the outer wall of the filter body 1 and communicates with the first cavity 12. To prevent backflow or short circuits, a one-way check valve can be optionally installed inside the water inlet 15 to improve the stability of the filtration system. The drain outlet 14 is located on the outer wall of the filter body 1 and communicates with the second cavity 13. The filter assembly is detachably installed in the second receiving cavity 13. The second receiving cavity 13 is also provided with a fixing rib 131, which is used to fix the filter assembly and prevent the filter assembly from shaking or shifting during use.

[0032] like Figure 2 and Figure 3As shown, in this embodiment, the filtration assembly includes a filter media box 2 and a filter bag 3. The filter media box 2 includes sides and a bottom. The filter bag 3 is fitted onto the sides of the filter media box 2 and covers both sides and bottom. The filter media box 2 contains filter media for adjusting water quality, which may include one or more of the following: activated carbon bags, volcanic rock, maifanite, ceramic rings, zeolite, bio-balls, or nitrifying bacteria bricks. The filter bag 3 is made of a flexible, permeable material, which may include fiber cloth, non-woven fabric, filter cotton, or a filter screen.

[0033] like Figure 3 As shown, in this embodiment, the filter media box 2 consists of a cover 21 and three boxes 22. Each box 22 forms an independent space, and filter media with different functions can be placed in different boxes 22 respectively, avoiding mutual interference between different filter media. The cover 21 and each box 22 are equipped with a plug-in assembly. The bottom of the cover 21 and the box 22 have plug-in interfaces, and the top of the box 22 has a plug-in block. The plug-in interfaces and plug-in blocks are connected to form a detachable filter media box 2. This plug-in assembly facilitates assembly and maintenance, allowing users to quickly replace specific filter media according to the actual aquaculture environment. In other embodiments, other detachable connection methods can also be used, such as magnetic connection. That is, the cover 21 has a magnetic adsorption strip, and the top of the box 22 has a metal strip or magnetic sheet embedded. Magnetic positioning and adsorption are used, avoiding the wear and aging problems of traditional mechanical clips, and is suitable for scenarios requiring frequent filter media replacement.

[0034] In other embodiments (not shown in the figures), the filter media box 2 can adopt a one-piece injection-molded structure, with a water inlet at the top and a water outlet at the bottom. An internal partition plate forms multiple filter media compartments, each filled with a different type of filter media to prevent mixing and improve the targeted filtration effect. The filter media box 2 can also adopt a drawer-type structure, with each box 22 being an independent unit slidably disposed within a common outer shell. Users can pull out any box individually like a drawer to replace the filter media, improving maintenance efficiency.

[0035] In other embodiments (not shown in the figures), the filter media box 2 can not only consist of three boxes, but can also be flexibly configured into a modular structure consisting of 1, 2, 4 or more boxes according to actual filtration needs. By stacking multiple units, it is easy to adjust the number of filtration stages, such as a segmented treatment of "pre-stage biochemical + post-stage physical".

[0036] The bottom surface and multiple sides of the housing 22 are provided with water outlet holes 221 to ensure smooth discharge of filtered water and improve filtration efficiency. In other embodiments (not shown in the figure), the water outlet holes 221 may be provided only on the bottom surface of the housing 22, so that the water entering the filter media box 2 passes through the housing 22 containing different filter media in sequence.

[0037] A water inlet hole 211 is formed on the top surface of the cover 21, through which water flows into the filter media box 2 and undergoes initial filtration through the internal filter media. A snap-fit ​​212 is provided on the side of the cover 21 for securing the opening 31 of the filter bag 3. The opening 31 of the filter bag 3 is fitted onto the snap-fit ​​212, allowing the filter bag 3 to be stably supported on the outside of the filter media box 2. The filter bag 3 is used to filter large particles of impurities in the water flow. When the filter bag 3 is installed in the filter media box 2, it can completely cover multiple sides and the bottom of the filter media box 2. In other embodiments (not shown in the figure), the filter bag 3 can be fixed to the filter media box 2 using a magnetic connection structure. A magnetic adsorption strip is provided on the outside of the cover 21, and a metal strip or magnetic material is sewn at the opening 31 of the filter bag 3, achieving fixation through magnetic adsorption. This solves the problem of easy aging of traditional snap-fit ​​212 and improves installation convenience.

[0038] In other embodiments (not shown in the figure), the bag opening 31 of the filter bag 3 can be connected to the periphery of the box cover 21 by setting a ring zipper. After tightening, it can be reliably fixed, which is convenient for disassembly and cleaning, and is especially suitable for aquarium environments that require frequent maintenance.

[0039] In other embodiments (not shown in the figure), the filter bag 3 may adopt a buckle or Velcro connection structure, with adjustable buckles or Velcro on the side of the filter material box, and a corresponding buckle strap sewn at the bag opening 31. The buckle or hook face achieves a stable connection through overlap, adapting to filter bags of different thicknesses or materials.

[0040] In other embodiments (not shown in the figure), the filter bag 3 can adopt an annular pressure ring fixing structure. A pressure ring seat is provided around the box cover 21. After the bag opening 31 of the filter bag 3 is fitted onto the pressure ring seat, the bag opening is clamped by the pressure ring 213 to achieve quick loading and unloading and good sealing performance. The structure is simple and suitable for mass production.

[0041] In other embodiments (not shown in the figures), to enhance the structural stability of the filter bag 3 under water flow impact, a detachable lightweight support frame is provided inside, such as a flexible frame made of plastic or stainless steel. This effectively prevents the filter bag 3 from collapsing due to water flow impact and extends its service life. Furthermore, additional functional layers, such as a dechlorination layer, an antibacterial layer, or a nitrite adsorption layer, can be compositely provided inside the filter bag 3. These functional layers are fixed to the bag body through hot pressing, sewing, or lamination processes, enhancing the additional functions of the filter bag 3 and extending the water quality stabilization time.

[0042] like Figure 3 and Figure 5 As shown, in this embodiment, the top of the cover 21 has an upwardly extending water-blocking part 213. When the water flowing out of the first receiving cavity 12 flows into the cover 21, it is blocked by the water-blocking part 213 and enters the filter media box 2 through the water inlet 211, and will not overflow from the filter assembly, thus preventing unfiltered water from flowing into the aquarium.

[0043] For the aforementioned filtration assembly, water flows into the filter media box 2 through the inlet 211. After the internal filter media completes water quality regulation (such as bacterial cultivation and mineralization), it flows into the filter bag 3 through the outlet 221. The filter bag 3 intercepts large particles of impurities for secondary filtration and then seeps out. This utility model forms a compact structure of "filter media box core and outer filter bag" by coaxially mounting the filter media box 2 and the filter bag 3. This solves the problem of large space occupation and bulky size caused by the separate setting of filter media box and filter bag in traditional filters. Furthermore, the water quality regulation function of the diverse filter media in the filter media box 2 and the impurity interception function of the filter bag 3 achieve dual filtration division of labor, improving purification efficiency while reducing filter media clogging and replacement frequency.

[0044] like Figure 6 and Figure 7 As shown, in this embodiment, the filter also includes a water pump 8, which is fixedly installed in the first receiving cavity 12. Its inlet end is connected to an external aquarium via an inlet 15, for drawing water from the aquarium. The inlet 15 is detachably equipped with an inlet pipe 4, and a limiting protrusion is provided on the inner wall of the inlet 15 (see...). Figure 7 The outer wall of the inlet pipe 4 has multiple evenly distributed limiting grooves. The inlet pipe 4 is inserted into the inlet 15, and the limiting protrusion cooperates with the limiting groove to connect the inlet pipe 4 to the inlet 15. Through the cooperation of the limiting protrusion and the multiple limiting grooves, the position of the inlet pipe 4 can be adjusted according to the water level of the aquarium. An oil film adsorption tube 41 is installed on the inlet pipe 4. By adjusting the position of the inlet pipe 4 through the limiting protrusion and the limiting groove, the opening of the oil film adsorption tube 41 is located at the water surface, effectively adsorbing the oil film on the surface of the aquarium, reducing the thickness of the oil film, increasing the dissolved oxygen in the water, preventing the oil film from affecting light and biological respiration, and improving the overall cleanliness and aesthetics of the aquarium.

[0045] In other embodiments (not shown in the figure), to adapt to water level fluctuations, the oil film adsorption tube 41 can be configured as a floating water suction head structure, with a float or float ring on top to always keep the suction port flush with the water surface, ensuring that the oil film is continuously sucked in.

[0046] In other embodiments (not shown in the figure), the adsorption tube 41 may be equipped with replaceable oil-absorbing filter cotton or activated carbon core to capture organic residues, micro-oil molecules, etc. floating on the water surface, thereby further improving the oil film removal effect and extending the time for water to become clear.

[0047] like Figure 4As shown, in this embodiment, the filter body 1 also includes a UV lamp mounting box 5, which is fixedly installed in the first receiving cavity 12. A UV lamp 7 (ultraviolet lamp) is installed inside the UV lamp mounting box 5 for sterilizing and disinfecting the water flow, pre-treating the water before it enters the filter media box 2, and reducing the bacterial load. For aquariums with high-density aquaculture, the UV lamps 7 can be connected in parallel in multiple water flow branches. Through a diversion structure, the water flow is evenly distributed into multiple disinfection chambers, improving the overall treatment capacity and making it suitable for large-volume, high-density aquaculture.

[0048] The UV lamp mounting box 5 has an opening at the top for easy installation and maintenance of the UV lamp 7. A mounting cover 6 is fitted at the opening, with snap-fit ​​connectors on both sides to engage with the UV lamp mounting box 5, ensuring a tight fit. A fixing part 61 is located on the side of the mounting cover 6 closest to the UV lamp mounting box 5, forming a plug-in part 71 with the top of the UV lamp 7. The fixing part 61 and the plug-in part 71 form a detachable plug-in connection. Through the assembly of the fixing part 61 and the plug-in part 71, the UV lamp 7 is stably fixed inside the mounting box, effectively preventing lamp displacement or vibration caused by water flow impact, ensuring precise UV irradiation angle, and continuously exerting its sterilization effect.

[0049] The UV lamp mounting box 5 has a water inlet 51 at its lower end and a water outlet 52 at its upper end. The outlet of the water pump 8 is directly connected to the water inlet 51 of the UV lamp mounting box. Water flows into the UV lamp mounting box 5 from the water inlet 51, fills the cavity, and then exits from the water outlet 52, ensuring that the water is fully irradiated by the UV lamp 7 to complete the disinfection process. In addition, the UV lamp mounting box 5 is made of opaque materials, such as ABS engineering plastic, polyvinyl chloride (PVC), and polypropylene (PP), which can effectively limit the illumination range of the UV lamp 7 and prevent ultraviolet light leakage.

[0050] like Figure 4 As shown, in this embodiment, the top of the filter body 1 is also provided with a top cover 9, which can cover the top of the filter body 1. The filter is an external filter, and the filter body 1 is provided with a hanging part 10, which can be directly hung on the outer wall of the aquarium. In other embodiments (not shown in the figure), the hanging part 10 is designed as a hook with a telescopic or adjustable length to adapt to the outer wall of the aquarium of different thicknesses and shapes, improving versatility. The hanging part 10 can also be fixed by a suction cup, which is convenient for temporary installation and allows for flexible installation positions without damaging the surface of the aquarium.

[0051] In other embodiments (not shown in the figures), a buffer pad may be provided on the side of the filter body 1 facing the aquarium. When the filter body 1 is hung on the aquarium, the buffer pad fits against the aquarium, reducing the noise generated by the vibration of the water pump 8 during operation. In addition, the buffer pad can also prevent the filter body 1 from rubbing against the outer wall of the aquarium and scratching the outer wall of the aquarium.

[0052] In other embodiments (not shown in the figure), the drain outlet 14 is equipped with a spray pipe, which returns the filtered water to the aquarium in a spray manner to enhance the dissolved oxygen effect, making it suitable for high-density aquariums.

[0053] The working principle of the filter is as follows: The filter is hung on the outer wall of the aquarium; the water pump 8 installed in the filter delivers the water to be filtered from the aquarium to the inlet 51 of the UV lamp mounting box through the inlet pipe 4. Oil stains on the water surface can be adsorbed by the oil film adsorption tube 41. The water flowing into the UV lamp mounting box 5 is sterilized and disinfected under the irradiation of the UV lamp 7. The sterilized and disinfected water flows into the filter assembly from the outlet 52 of the UV lamp mounting box at the top of the UV lamp mounting box 5. The water first enters the filter media box 2 through the inlet 211. The filter media box 2 contains filter media to adjust the water quality. The water flows through the filter media box 2 to adjust the water quality. Then, the water that has been adjusted by the filter media enters the filter bag 3 to filter the impurities in the water again. Then, the water seeps out from the filter bag 3 and flows out from the filter drain 14. The outflowing water can be recycled back into the aquarium.

[0054] This utility model adopts a structural design where the filter media box and filter bag are coaxially fitted, achieving a compact combination of "filter media box core + outer filter bag". This design effectively reduces the space waste caused by the separate placement of the filter media box and filter bag in traditional filters, making the filter more compact and structurally more rational. The filter media box can accommodate various functional filter media for water quality regulation, such as activated carbon adsorption, release of beneficial minerals, and bio-cultured bacteria, achieving multiple water purification functions. Simultaneously, the fitted filter bag uses a flexible, permeable material to effectively capture large particles of impurities in the water, completing secondary mechanical filtration, preventing filter media clogging, improving filtration efficiency, extending the service life of the filter media and filter bag, and reducing maintenance frequency. Overall, this structural design achieves a rational division of labor between filter media and impurity interception, significantly improving the purification effect and system stability of aquarium filtration.

[0055] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship 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. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0056] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0057] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0058] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An aquarium filter characterized by, include: The filter body (1) is provided with an inlet (15) and an outlet (14), and has an internal cavity for water flow. The receiving cavity is provided with a removable filter assembly, the filter assembly comprising: The filter media box (2) has a water inlet hole (211) on its top surface and a water outlet hole (221) on its bottom surface. The filter media box (2) is filled with water quality conditioning filter media. A filter bag (3) is fitted over the outside of the filter media box (2) and covers the water outlet (221) to further filter the water flow after passing through the filter media box (2); The water inlet (15) is connected to the water inlet (211) of the filter material box (2), and the drain outlet (14) is connected to the outside of the filter bag (3).

2. The filter for an aquarium according to claim 1, characterized by The filter media box (2) includes a cover (21) and at least one box body (22), the cover (21) and the at least one box body (22) being detachably connected.

3. The filter for an aquarium according to claim 2, characterized by There are three boxes (22). Each box (22) has a plug-in component on the cover (21) and each box (22). The bottom of the cover (21) and the box (22) has a plug-in interface, and the top of the box (22) has a plug-in block.

4. The filter for an aquarium according to claim 2, characterized by The water inlet (211) is located on the top surface of the cover (21), and the water outlet (221) is located on the bottom surface of the body (22).

5. The filter for an aquarium according to claim 2, characterized by The side of the lid (21) is provided with a snap (212), and the opening (31) of the filter bag (3) is fitted onto the snap (212). The filter bag (3) is made of flexible permeable material.

6. The filter for an aquarium according to claim 1, characterized by The filter body (1) has a partition (11) inside, which divides the receiving cavity into a first receiving cavity (12) and a second receiving cavity (13). The filter assembly is detachably installed into the second receiving cavity (13).

7. The filter for an aquarium according to claim 6, characterized by The filter body (1) includes a UV lamp mounting box (5), which is fixedly installed in the first receiving cavity (12), and a UV lamp (7) is provided inside the UV lamp mounting box (5).

8. The filter for an aquarium according to claim 6, characterized by The UV lamp mounting box (5) has a UV lamp mounting box water inlet (51) at the lower end and a UV lamp mounting box water outlet (52) at the upper end. The UV lamp mounting box has a water outlet (52) connected to a water inlet (211), and a UV lamp mounting box has a water inlet (51) connected to a water inlet (211).

9. The filter for an aquarium according to claim 6, characterized by A water pump (8) is installed in the first receiving cavity (12).

10. The filter for an aquarium according to claim 1, characterized by The inlet (15) is detachably equipped with an inlet pipe (4), and an oil film adsorption pipe (41) is installed on the inlet pipe (4).

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