Aquarium with formaldehyde removal function

Abstract

The aquarium with the formaldehyde removal function comprises a cabinet body and a fish tank, the fish tank is arranged at the upper end of the cabinet body, a filtering bin and a backflow bin are arranged in the cabinet body, a backflow opening communicated with the filtering bin is formed in the bottom of the fish tank, a filler medium is placed in the filtering bin, and the filler medium is used for cultivating bacteria for absorbing formaldehyde. The backflow bin is located below the filtering bin and communicated with the filtering bin, a water feeding mechanism used for pumping filtered water into the fish tank is arranged in the backflow bin, an air inlet pipe is fixed to the top of the backflow bin and communicated with the backflow bin, and an exhaust assembly is further arranged on the side wall of the cabinet body and located above the filtering bin. Air enters from the air inlet pipe, flows to the filtering bin through the backflow bin, is absorbed and purified by bacteria cultivated in the filtering bin, and is finally exhausted through the air exhaust assembly; the air purifier has the advantages that the environment can be beautified, and harmful substances in the air can be effectively purified.

Description

Technical Field

[0001] The invention relates to an aquarium, in particular to an aquarium with formaldehyde removal function. Background Art

[0002] As people's quality of life continues to improve, indoor air quality issues are increasingly valued. Volatile organic compounds (VOCs) such as formaldehyde are common indoor air pollutants that pose a potential threat to human health. Although traditional air purification technologies, such as catalytic oxidation, activated carbon adsorption, photocatalysis, and low-temperature plasma technology, have improved indoor air quality to a certain extent, they generally have problems such as high cost, complex maintenance, and the possibility of secondary pollution. Therefore, it is imperative to find an efficient, economical, and environmentally friendly air purification method.

[0003] A Chinese utility model patent with patent number CN202023239020.4 discloses a fish tank with an air purification function, which includes a cylinder body, a cylinder cover installed on the top of the cylinder body, and a base with air purification function fixedly installed on the bottom of the cylinder body; an air inlet is provided on one side of the base, and a clean air outlet is provided on the other side, the air inlet and the clean air outlet are connected, and the base is provided with an air purification component at a position between the air inlet and the clean air outlet through an elastically detachable structure, and the air enters the base from the air inlet and is purified by the air purification component and then discharged from the clean air outlet; at the same time, an oxygenation chamber and a baffle are also provided, so that the exhaust fan in the air purification component can also be used as an oxygenation device. The fish tank has the advantages of purifying the air and facilitating the disassembly and replacement of the air purification component.

[0004] However, while this patented design provides a certain degree of air purification function, it also has some obvious shortcomings. The air purification function and the fish farming function of the fish tank itself are two relatively independent modules. This means that in actual applications, the realization of the air purification function does not entirely rely on the biological purification mechanism of the fish tank itself, but is completed through additional air purification components. This design may lead to poor coordination of the overall system, because the air purification function and the fish farming function are not truly integrated. As an independent unit, the air purification component can be easily disassembled and replaced, but this will also cause the user to consider the maintenance of the air purification component and the fish tank itself separately when maintaining the fish tank, increasing the management difficulty for the user. Summary of the invention

[0005] The purpose of the present invention is to provide an aquarium with formaldehyde removal function, which can beautify the environment and effectively purify harmful substances in the air.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an aquarium with formaldehyde removal function, comprising a cabinet and a fish tank, the fish tank is arranged at the upper end of the cabinet, a filter bin and a reflux bin are arranged in the cabinet, a reflux port connected to the filter bin is arranged at the bottom of the fish tank, a filler medium is placed in the filter bin, the filler medium is used to cultivate bacteria that absorb formaldehyde, the reflux bin is located below the filter bin and is connected to the filter bin, a water supply mechanism for extracting filtered water into the fish tank is arranged in the reflux bin, an air inlet pipe is fixed to the top of the reflux bin, the air inlet pipe is connected to the reflux bin, an exhaust assembly is also arranged on the side wall of the cabinet, the exhaust assembly is located above the filter bin, so that air enters through the air inlet pipe, flows to the filter bin through the reflux bin, is absorbed and purified by the bacteria cultivated in the filter bin, and is finally discharged through the exhaust assembly.

[0007] Preferably, a water discharge tee is fixed at the reflux port, the water discharge tee has a cavity opening upward, and a first pipe and a second pipe which are independent of each other and distributed up and down are arranged in the cavity, a third pipe connected with the cavity is also arranged on the side wall of the water discharge tee, the cavity is connected with the interior of the fish tank, the third pipe is connected with the filter bin, an overflow pipe is fixed to the upper end of the first pipe, a drain pipe connected with the air inlet pipe is arranged at the lower end of the first pipe, an outlet pipe is arranged at the upper end of the second pipe, and the lower end of the second pipe is connected with the water supply mechanism through the water inlet pipe.

[0008] Preferably, a water shield is fixed in the fish tank, the reflux port is located in the water shield, a plurality of reflux grooves are provided on the side wall of the water shield, an overflow groove is also provided on the top of the water shield, and the upper end of the overflow pipe extends to a position close to the overflow groove, so that when the water level rises to a preset level, water can naturally flow from the overflow groove into the overflow pipe.

[0009] Preferably, the filter bin is divided into a coarse filtration space and a cultivation space by a vertically arranged partition, a gap for connecting the coarse filtration space and the cultivation space is formed at the upper end of the partition, and a guide plate is installed at the gap.

[0010] Preferably, a horizontally distributed mounting plate is fixed in the coarse filtration space, a gravity valve and a sewage outlet are installed on the mounting plate, a stainless steel filter cartridge is installed at the sewage outlet, the outlet end of the third pipe extends into the stainless steel filter cartridge, an inclined plate with an oblique distribution is also fixed to the lower end of the partition, the coarse filtration space is also connected to a sewage pipe, and the sewage pipe is located below the mounting plate.

[0011] Preferably, a filter frame is fixed on the side wall of the partition, filter cotton is placed in the filter frame, and an operating port for taking and placing the filter cotton is provided on the side wall of the filter bin, and a snap plate is sealed and installed at the operating port.

[0012] Preferably, a plurality of supporting ribs are extended upward from the bottom of the filter frame, a plurality of filter holes are also provided at the bottom of the filter frame, and the filter cotton is placed between the plurality of supporting ribs.

[0013] Preferably, the packing medium is an isosaddle ring packing, a ball ring packing, a Heller ring packing, a ceramic packing, a nanometer packing or an activated carbon packing, and the bacteria cultivated in the filter chamber are methylotrophic bacteria, Pseudomonas or Bacillus.

[0014] Preferably, the water supply mechanism comprises a water pump, the water pump is arranged in the reflux bin, and the drainage end of the water pump is connected to the water inlet pipe.

[0015] Preferably, the exhaust assembly includes an exhaust fan and a base, the base is fixed on the side wall of the filter frame, a gap is left between the base and the top of the cultivation space, the upper edge of the base is arranged higher than the guide plate, the exhaust fan is fixed in the base, and is used to discharge the purified air from the side wall of the cabinet, and a Venturi tube is arranged between the air inlet pipe and the reflux bin.

[0016] Compared with the prior art, the advantages of the present invention are: the design of the aquarium combines water circulation and air purification functions, which can not only maintain the living environment of fish, but also effectively remove indoor formaldehyde. Its working principle is as follows: the reflux port at the bottom of the fish tank introduces water into the filter bin, and the filler medium in the filter bin cultivates special bacteria that can absorb formaldehyde. After being filtered by the filter bin, the water flows into the reflux bin below, and is then pumped back to the fish tank by the water supply mechanism to form a complete water circulation system. At the same time, air enters from the air inlet pipe on the top of the reflux bin, passes through the reflux bin and the filter bin in the opposite direction of the water flow, and in this process, the formaldehyde in the air is absorbed and purified by the bacteria in the filter bin, and finally, the purified air is discharged through the exhaust assembly located above the filter bin.

[0017] The advantages of this design are: it makes full use of the space of the aquarium, integrates water circulation and air purification functions, saves space, and achieves continuous absorption and decomposition of formaldehyde by cultivating special bacteria, without the need for frequent replacement of filter materials. Moreover, the direction of air flow is opposite to that of water flow, which increases the contact time between air and bacteria and improves purification efficiency. Therefore, this design can not only maintain the living environment of fish, but also improve indoor air quality and increase air humidity. It is particularly suitable for home or office environments that need to solve indoor formaldehyde problems at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of the internal structure of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the water retaining cover in the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the launching tee in the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the internal structure of the cabinet in the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the mounting plate in the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the filter frame in the present invention; In the figure, 1, cabinet; 2, fish tank; 3, filter chamber; 4, reflux chamber; 5, reflux port; 6, packing medium; 7, water supply mechanism; 8, air inlet pipe; 9, exhaust assembly; 10, water discharge tee; 11, first pipeline; 12, second pipeline; 13, third pipeline; 14, overflow pipe; 15, drain pipe; 16, outlet pipe; 17, inlet pipe; 18, water shield; 19, reflux tank; 20, overflow tank; 21, Partition; 22. Coarse filtration space; 23. Cultivation space; 24. Notch; 25. Guide plate; 26. Mounting plate; 27. Gravity valve; 28. Sewage outlet; 29. ​​Stainless steel filter cartridge; 30. Inclined plate; 31. Sewage pipe; 32. Filter frame; 33. Filter cotton; 34. Operation port; 35. Snap plate; 36. Support ribs; 37. Filter holes; 38. Water pump; 39. Base; 40. Exhaust fan; 41. Venturi tube. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] Embodiment 1: Figure 1-Figure 7As shown, an aquarium with formaldehyde removal function includes a cabinet 1 and a fish tank 2. The fish tank 2 is arranged at the upper end of the cabinet 1. A filter chamber 3 and a reflux chamber 4 are arranged in the cabinet 1. A reflux port 5 connected with the filter chamber 3 is arranged at the bottom of the fish tank 2. A filler medium 6 is placed in the filter chamber 3. The filler medium 6 is used to cultivate bacteria that absorb formaldehyde. The reflux chamber 4 is located below the filter chamber 3 and is connected with the filter chamber 3. A water supply mechanism 7 for extracting filtered water into the fish tank 2 is arranged in the reflux chamber 4. An air inlet pipe 8 is fixed on the top of the reflux chamber 4. The air inlet pipe 8 is connected with the reflux chamber 4. An exhaust component 9 is also arranged on the side wall of the cabinet 1. The exhaust component 9 is located above the filter chamber 3, so that air enters through the air inlet pipe 8, flows to the filter chamber 3 through the reflux chamber 4, is absorbed and purified by the bacteria cultivated in the filter chamber 3, and is finally discharged through the exhaust component 9.

[0022] Embodiment 2: Figure 1-Figure 7 As shown, what is different from the first embodiment is that a water discharge tee 10 is fixed at the reflux port 5, the water discharge tee 10 has a cavity opening upward, and a first pipe 11 and a second pipe 12 which are independent of each other and distributed up and down are arranged in the cavity, a third pipe 13 connected to the cavity is also arranged on the side wall of the water discharge tee 10, the cavity is connected to the inside of the fish tank 2, the third pipe 13 is connected to the filter bin 3, an overflow pipe 14 is fixed to the upper end of the first pipe 11, a drain pipe 15 connected to the air inlet pipe 8 is arranged at the lower end of the first pipe 11, an outlet pipe 16 is arranged at the upper end of the second pipe 12, and the lower end of the second pipe 12 is connected to the water supply mechanism 7 through the water inlet pipe 17.

[0023] In the above structure, the water discharge tee 10 is installed at the reflux port 5, and its upwardly open cavity is directly connected to the inside of the fish tank 2, serving as the main inlet of the water flow. The two independent pipes (the first pipe 11 and the second pipe 12) arranged in the cavity and the third pipe 13 on the side wall together constitute a complex and efficient circulation system. The third pipe 13 is connected to the filter bin 3, which is responsible for introducing the water in the fish tank 2 into the filtration system for purification. The overflow pipe 14 at the upper end of the first pipe 11 can effectively control the water level to prevent water overflow, and the drain pipe 15 at the lower end is connected to the air inlet pipe 8, which can discharge excess water and introduce fresh air to promote gas-liquid exchange. The second pipe 12 is mainly responsible for the reflux of water. The outlet pipe 16 at the upper end discharges the purified water back to the fish tank 2, and the lower end is connected to the water supply mechanism 7 through the water inlet pipe 17, ensuring the continuous circulation of water.

[0024] The advantage of this design is that it achieves a close integration of water flow, air flow and filtration system, greatly improving space utilization. Through the reasonable division of labor among different pipelines, water purification, circulation, discharge and air introduction can be carried out efficiently. The setting of the overflow pipe 14 and the drain pipe 15 enhances the safety and stability of the system, effectively preventing the risk of overflow, and each component can be disassembled and inspected separately for easy maintenance and cleaning.

[0025] In this embodiment, a water retaining cover 18 is fixed in the fish tank 2, and the reflux port 5 is located in the water retaining cover 18. A plurality of reflux grooves 19 are provided on the side wall of the water retaining cover 18. An overflow groove 20 is also provided on the top of the water retaining cover 18. The upper end of the overflow pipe 14 extends to a position close to the overflow groove 20, so that when the water level rises to a preset level, water can naturally flow from the overflow groove 20 into the overflow pipe 14.

[0026] In the above structure, a stable water circulation system is formed by introducing a water shield 18 structure into the fish tank 2. The water shield 18 surrounds the return port 5, creating an independent water flow control area. The multiple return grooves 19 on the side wall of the water shield 18 allow the water to flow freely into the water shield 18, ensuring the continuous circulation of water. The overflow groove 20 located at the top of the water shield 18 is closely matched with the upper end of the overflow pipe 14 to form a precise water level control mechanism. When the water level rises to the preset level, the excess water will naturally flow into the overflow groove 20 and then be discharged through the overflow pipe 14, effectively preventing the risk of overflow caused by excessive water level.

[0027] The advantages of the above design are mainly reflected in the following aspects: it realizes automatic adjustment of the water level and can maintain a stable water level without human intervention, greatly reducing the workload of daily maintenance; the setting of multiple reflux grooves 19 ensures the uniform distribution of water flow, avoids the problem of local water flow being too fast or dead corners, and is beneficial to the balance of the ecological environment in the fish tank 2; the presence of the water retaining cover 18 effectively reduces the possibility of fish mistakenly entering the reflux port 5, and improves the safety of the system; in addition, this design is also easy to clean and maintain, and the water retaining cover 18 can be easily disassembled to facilitate regular cleaning of sediments.

[0028] Embodiment 3: Figure 1-Figure 7 As shown, different from the second embodiment, the filter chamber 3 is divided into a coarse filtration space 22 and a cultivation space 23 by a vertically arranged partition 21, and a notch 24 for connecting the coarse filtration space 22 and the cultivation space 23 is opened at the upper end of the partition 21, and a guide plate 25 is installed at the notch 24.

[0029] The filter chamber 3 realizes the dual functions of multi-stage filtration and biological cultivation through space division and water flow guidance. The interior of the filter chamber 3 is divided into two independent but interrelated spaces by a vertical partition 21, namely, a coarse filtration space 22 and a cultivation space 23. The water first enters the coarse filtration space 22, where preliminary mechanical filtration is performed to remove large particles of impurities and suspended matter in the water. The water after preliminary filtration then flows into the cultivation space 23 through the gap 24 at the upper end of the partition 21. The guide plate 25 installed at the gap 24 plays a key role. It can not only guide the direction of the water flow, but also adjust the water flow speed to ensure that the water flow enters the cultivation space 23 smoothly. In the cultivation space 23, the water flow speed is slowed down, providing an ideal environment for biological filtration, which is conducive to the growth and reproduction of beneficial bacteria. Therefore, this structure takes into account filtration efficiency, biological cultivation and easy maintenance, which can not only effectively improve water quality, but also provide a more stable and healthy living environment for the organisms in the aquarium.

[0030] In this embodiment, a horizontally distributed mounting plate 26 is fixed in the coarse filtration space 22, a gravity valve 27 is installed on the mounting plate 26, and a sewage outlet 28 is opened, a stainless steel filter cartridge 29 is installed at the sewage outlet 28, and the outlet end of the third pipe 13 extends into the stainless steel filter cartridge 29. An inclined plate 30 is also fixed to the lower end of the partition 21. The coarse filtration space 22 is also connected to a sewage pipe 31, and the sewage pipe 31 is located below the mounting plate 26.

[0031] In the above structure, the horizontally distributed mounting plate 26 provides a stable structural support for the entire system, and also realizes effective stratification of space, which is convenient for the installation of different functional components. The gravity valve 27 on the mounting plate 26 cleverly utilizes the principle of water pressure, which can automatically adjust the water flow to prevent the system from overloading. The combined design of the sewage outlet 28 and the stainless steel filter cartridge 29 greatly improves the filtration efficiency. The stainless steel filter cartridge 29 is not only durable and corrosion-resistant, but also can effectively capture larger particles of impurities. The design of the outlet end of the third pipeline 13 extending into the stainless steel filter cartridge 29 ensures that the water flow from the fish tank 2 can be promptly and effectively filtered. In addition, the inclined plate 30 fixed at the lower end of the partition 21 can guide the sediment to flow in a specific direction, prevent dirt from accumulating, and create better conditions for subsequent biological filtration. The sewage pipe 31 located below the mounting plate 26 can regularly discharge the accumulated dirt, which greatly simplifies the cleaning and maintenance work and prolongs the service life of the system. Therefore, this multi-level and multi-functional design not only improves the filtration efficiency, but also enhances the self-cleaning ability of the system and reduces the workload of daily maintenance.

[0032] In this embodiment, a filter frame 32 is fixed on the side wall of the partition 21, and filter cotton 33 is placed in the filter frame 32. An operating port 34 for taking in and placing the filter cotton 33 is provided on the side wall of the filter bin 3, and a snap plate 35 is sealed and installed at the operating port 34.

[0033] In the above structure, the filter frame 32 fixed on the side wall of the partition 21 and the filter cotton 33 placed inside form an additional filter layer, which further improves the filtering capacity of the entire system. This design utilizes the position of the partition 21 and increases the filtering area without occupying additional space. The filter cotton 33 can effectively capture fine particles and suspended matter in the water, creating better conditions for subsequent biological filtration, and the operation port 34 set on the side wall of the filter chamber 3 greatly improves the maintainability of the system. This operation port 34 allows the user to directly replace or clean the filter cotton 33 from the outside without disassembling the entire filtration system, which greatly simplifies daily maintenance work. The design of the snap plate 35 sealed and installed at the operation port 34 not only ensures the sealing of the system and prevents water leakage, but also provides a fast and convenient switch mechanism.

[0034] In this embodiment, a plurality of support ribs 36 are extended upward from the bottom of the filter frame 32 . A plurality of filter holes 37 are also formed at the bottom of the filter frame 32 . The filter cotton 33 is placed between the plurality of support ribs 36 .

[0035] In the above structure, the multiple support ribs 36 extending upward from the bottom of the filter frame 32 form a stable and orderly structural frame, providing ideal support and positioning for the filter cotton 33. This design not only enhances the structural strength of the entire filter frame 32, but also ensures that the filter cotton 33 maintains a good shape and position during use, preventing it from being deformed or displaced due to water flow pressure. The multiple filter holes 37 opened at the bottom balance the water flow distribution, allowing water to evenly pass through the entire surface of the filter cotton 33, maximizing the area of ​​the packing medium. The design of placing the filter cotton 33 between the multiple support ribs 36 further optimizes the water flow path, forcing the water flow to pass through different layers of the filter cotton 33, and improving the depth and efficiency of filtration.

[0036] Embodiment 4: Figure 1-Figure 7 As shown, different from the third embodiment, the packing medium 6 is an isosaddle ring packing, a ball ring packing, a Heller ring packing, a ceramic packing, a nanometer packing or an activated carbon packing, and the bacteria cultivated in the filter chamber 3 are methylotrophic bacteria, Pseudomonas or Bacillus.

[0037] A wide variety of choices of packing media 6, such as iso-saddle ring packing, ball ring packing, Heller ring packing, ceramic packing or activated carbon packing, each with unique advantages and applications, these packings not only provide a wide surface area for bacterial growth, but also effectively remove impurities and harmful substances from the water.

[0038] In this embodiment, iso-saddle ring filler is used, specifically 25-type iso-saddle ring filler, which can simultaneously realize the dual functions of mechanical filtration and biological filtration. Since the 25-type iso-saddle ring filler has a unique saddle-shaped structure, it provides a large specific surface area, and its special shape can not only effectively intercept suspended matter in the water, but also provide an ideal growth environment for beneficial bacteria such as Methylobacterium. The high porosity of this filler ensures that the water flow can pass through the entire filter layer evenly, increases the contact area with the bacteria, and thus enhances the effect of biological filtration. At the same time, the size of the 25-type iso-saddle ring is moderate, which will not cause excessive blockage and can maintain a high-efficiency filtration state for a long time.

[0039] Methylotrophic bacteria, Pseudomonas, and Bacillus are all excellent bacterial choices that can effectively degrade formaldehyde in water. Among them, methylotrophic bacteria use formaldehyde as the only carbon source and energy source, and have a very high efficiency in degrading formaldehyde, making them a common choice for biological formaldehyde removal devices; Pseudomonas is more adaptable to environmental conditions and can effectively degrade formaldehyde in a wider range of temperatures and pH values, making it more practical; Bacillus can produce a large amount of enzymes, which can also effectively degrade formaldehyde, and has stronger stress resistance, and can survive even in harsh environments. In addition to these three types of bacteria, nitrifying bacteria and sulfidizing bacteria can also degrade formaldehyde. According to the specific environment of the aquarium and the formaldehyde removal needs, choose the appropriate bacteria to achieve the best purification effect.

[0040] In this embodiment, the water supply mechanism 7 includes a water pump 38 . The water pump 38 is disposed in the reflux bin 4 , and a discharge end of the water pump 38 is connected to the water inlet pipe 17 .

[0041] The water pump 38 is arranged in the reflux chamber 4, and its drainage end is connected to the water inlet pipe 17. This design integrates the water pump 38 into the filtration system and brings into play multiple advantages. Specifically, the water pump 38 draws the filtered water back to the fish tank 2 through the water inlet pipe 17 to form a water circulation, which not only ensures the stability of the oxygen content in the water body, but also effectively distributes the purified water evenly to various areas in the fish tank 2 to avoid local differences in water quality, thereby ensuring the health of aquatic organisms. At the same time, since the water pump 38 is directly arranged in the reflux chamber 4, the water flow path is shortened, energy loss is reduced, water circulation efficiency is improved, and the noise generated by the operation of the water pump 38 is effectively reduced, thereby improving the mute effect.

[0042] In this embodiment, the exhaust assembly 9 includes an exhaust fan 40 and a base 39. The base 39 is fixed on the side wall of the filter frame 32. A gap is left between the base 39 and the top of the cultivation space 23. The upper edge of the base 39 is set higher than the guide plate 25. The exhaust fan 40 is fixed in the base 39 and is used to discharge the purified air from the side wall of the cabinet 1. A venturi tube 41 is arranged between the air inlet pipe 8 and the reflux bin 4.

[0043] The design of the exhaust assembly 9 installs the exhaust fan 40 in the base 39 fixed on the side wall of the filter frame 32, and through a reasonable structural layout, effectively exhausts the air that has been biologically filtered and physically filtered out of the aquarium, further improving the environmental quality of the aquarium. A gap is left between the base 39 and the top of the cultivation space 23 to form an air circulation channel, and the upper edge of the base 39 is higher than the guide plate 25 to ensure that the filtered air can flow smoothly into the exhaust fan 40. The exhaust fan 40 forms a negative pressure through operation, and the air in the cultivation space 23 is drawn into the exhaust fan 40, and then the exhaust fan 40 exhausts it out of the aquarium, forming a complete air circulation system.

[0044] The venturi tube 41 utilizes the principles of fluid dynamics to generate negative pressure when air flows through the tube mouth, thereby effectively improving the air suction efficiency in the reflux chamber and ensuring that sufficient oxygen enters the filtration system, providing the necessary conditions for the growth of methylbacterium. At the same time, the design of the venturi tube 41 can also enhance the mixing effect of air and water, promote the dissolution of oxygen into the water, increase the dissolved oxygen content of the water, and facilitate the breathing of aquatic organisms. In addition, the venturi tube 41 can also effectively reduce the noise generated by air flow and improve the quietness of the aquarium.

[0045] This design can not only effectively exhaust the purified air and improve the environment around the aquarium, but also prevent the accumulation of harmful substances and provide a more suitable environment for the growth of bacteria. The exhaust fan 40 usually adopts a low-noise design and will not generate excessive noise even when running, which will not affect the quietness of aquatic organisms and the surrounding environment.

[0046] This device combines biological filtration, physical filtration and air circulation systems to achieve the function of efficiently removing formaldehyde and maintaining a good ecological environment in the aquarium. Water enters the filter chamber 3 from the reflux port 5 at the bottom of the fish tank 2, and first passes through the coarse filtration space 22. The stainless steel filter cartridge 29 and filter cotton 33 intercept larger particles of dirt to prevent impurities from affecting the methyl bacteria in the cultivation space 23. After the water flows through the coarse filtration space 22, it will be guided into the cultivation space 23 by the guide plate 25 to ensure that the water flow fully contacts the filler medium 6 and the methyl bacteria, thereby improving the purification efficiency. The methyl bacteria cultivated here are the core of formaldehyde removal. They use formaldehyde as a carbon source and energy source to convert it into harmless carbon dioxide and water to achieve the purpose of purifying water quality. The design of the cultivation space 23 needs to provide suitable temperature, pH value, oxygen content and other conditions to ensure the healthy growth of methyl bacteria.

[0047] The purified water is then pumped back to the fish tank 2 by the water supply mechanism 7, maintaining the stability of the water level of the fish tank 2 and ensuring the circulation of the water body, which is conducive to the dissolution of oxygen and the uniform distribution of water quality. At the same time, fresh air enters the reflux chamber 4 through the air inlet pipe 8, providing oxygen for the water body and also providing the necessary oxygen for Methylbacterium to ensure its normal growth. The air purified by the filter chamber 3 is finally discharged from the aquarium by the exhaust component 9, effectively improving the air quality around the aquarium and preventing the accumulation of harmful substances such as formaldehyde.

[0048] These three parts work together to realize the formaldehyde removal function of the aquarium, maintain good water and air quality, and provide a safe and healthy living environment for aquatic creatures.

[0049] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An aquarium with formaldehyde removal function, comprising a cabinet and a fish tank, wherein the fish tank is arranged at the upper end of the cabinet, characterized in that: A filter bin and a reflux bin are provided in the cabinet, a reflux port connected to the filter bin is provided at the bottom of the fish tank, a filler medium is placed in the filter bin, and the filler medium is used to cultivate bacteria that absorb formaldehyde, the reflux bin is located below the filter bin and is connected to the filter bin, a water supply mechanism for pumping filtered water into the fish tank is provided in the reflux bin, an air inlet pipe is fixed to the top of the reflux bin, and the air inlet pipe is connected to the reflux bin, an exhaust assembly is also provided on the side wall of the cabinet, and the exhaust assembly is located above the filter bin, so that air enters through the air inlet pipe, flows to the filter bin through the reflux bin, is absorbed and purified by the bacteria cultivated in the filter bin, and is finally discharged through the exhaust assembly.

2. The aquarium with formaldehyde removal function according to claim 1, characterized in that: A water discharge tee is fixed at the reflux port, the water discharge tee has a cavity opening upward, and a first pipe and a second pipe which are independent of each other and distributed up and down are arranged in the cavity, a third pipe connected to the cavity is also arranged on the side wall of the water discharge tee, the cavity is connected to the interior of the fish tank, the third pipe is connected to the filter bin, an overflow pipe is fixed to the upper end of the first pipe, a drain pipe connected to the air inlet pipe is arranged at the lower end of the first pipe, an outlet pipe is arranged at the upper end of the second pipe, and the lower end of the second pipe is connected to the water supply mechanism through the water inlet pipe.

3. The aquarium with formaldehyde removal function according to claim 2, characterized in that: A water shield is fixed in the fish tank, the reflux port is located in the water shield, a plurality of reflux grooves are provided on the side wall of the water shield, an overflow groove is also provided on the top of the water shield, and the upper end of the overflow pipe extends to a position close to the overflow groove, so that when the water level rises to a preset level, water can naturally flow from the overflow groove into the overflow pipe.

4. The aquarium with formaldehyde removal function according to claim 2, characterized in that: The filter bin is divided into a coarse filtration space and a cultivation space by a vertically arranged partition, a notch for connecting the coarse filtration space and the cultivation space is provided at the upper end of the partition, and a guide plate is installed at the notch.

5. The aquarium with formaldehyde removal function according to claim 4, characterized in that: A horizontally distributed mounting plate is fixed in the coarse filtration space, a gravity valve and a sewage outlet are installed on the mounting plate, a stainless steel filter cartridge is installed at the sewage outlet, the outlet end of the third pipe extends into the stainless steel filter cartridge, an inclined plate is fixed at an inclined angle at the lower end of the partition, the coarse filtration space is also connected to a sewage pipe, and the sewage pipe is located below the mounting plate.

6. The aquarium with formaldehyde removal function according to claim 4, characterized in that: A filter frame is also fixed on the side wall of the partition, and filter cotton is placed in the filter frame. An operating port for taking and placing the filter cotton is provided on the side wall of the filter bin, and a snap plate is sealed and installed at the operating port.

7. The aquarium with formaldehyde removal function according to claim 6, characterized in that: A plurality of supporting ribs are extended upward from the bottom of the filter frame, and a plurality of filter holes are also provided at the bottom of the filter frame. The filter cotton is placed between the plurality of supporting ribs.

8. The aquarium with formaldehyde removal function according to claim 1, characterized in that: The packing medium is an isosaddle ring packing, a ball ring packing, a Heller ring packing, a ceramic packing, a nanometer packing or an activated carbon packing, and the bacteria cultivated in the filter bin are methylotrophic bacteria, pseudomonas or bacillus.

9. The aquarium with formaldehyde removal function according to claim 2, characterized in that: The water supply mechanism comprises a water pump, which is arranged in the reflux bin, and a drainage end of the water pump is connected to the water inlet pipe.

10. The aquarium with formaldehyde removal function according to claim 6, characterized in that: The exhaust assembly includes an exhaust fan and a base, the base is fixed on the side wall of the filter frame, a gap is left between the base and the top of the cultivation space, the upper edge of the base is arranged higher than the guide plate, the exhaust fan is fixed in the base, and is used to discharge the purified air from the side wall of the cabinet, and a Venturi tube is arranged between the air inlet pipe and the reflux bin.

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