Detachable multilayer filter material module of aquarium filter

Abstract

The invention relates to the technical field of aquatic breeding equipment, and discloses a detachable aquatic filter multi-layer filter material module which comprises an outer shell, the inner side wall of the outer shell is fixedly connected with a bearing plate, two sliding rods are installed at the top of the bearing plate, and the outer surfaces of the sliding rods are sleeved with two tension springs; two second sliding blocks are slidably connected to the outer surface of the bearing plate, a first connecting rod is hinged to the top of one second sliding block, a second connecting rod is hinged to the top of the other second sliding block, a mounting seat is slidably mounted on the inner side wall of the outer shell, and three layered filter materials are mounted in the mounting seat. Through cooperation of a traction rope, a second sliding block and other components, the connecting rod is promoted to swing and jack up the mounting base, and the mounting base carries the multiple layers of filter materials to ascend and be exposed on the outer surface of the device. According to the design, the whole device does not need to be disassembled, the filter material can be conveniently exposed only through pure mechanical transmission, the filter material disassembling step is remarkably simplified, and the maintenance time is shortened.

Description

Technical Field

[0001] This invention relates to the field of aquarium equipment technology, specifically to a detachable multi-layer filter media module for aquarium filters. Background Technology

[0002] In the field of aquarium equipment technology, filters are key devices for maintaining water cleanliness and ensuring the survival of aquatic organisms. Modular designs using multi-layer filter media are widely used in various aquarium settings due to their ability to achieve deep water purification through the synergistic effect of physical interception and biochemical decomposition. Currently, existing detachable aquarium filter modules with multi-layer filter media typically employ a top-opening filter media support structure to meet the needs of filter media replacement and maintenance. This design requires manually reaching inside the device after opening the top cover to remove the filter media support component. Care must be taken to avoid other internal structures during this process to prevent water leakage or component damage due to collisions. The overall maintenance process is relatively cumbersome, and there is room for further optimization in terms of ease of operation.

[0003] Furthermore, in existing aquarium filters, physical filter media (such as pre-filter cotton) are prone to clogging due to impurities during long-term use, requiring frequent disassembly and cleaning to maintain filtration efficiency. Additionally, nitrifying bacteria attached to biological filter media (such as bio-cotton) are susceptible to decreased activity due to insufficient dissolved oxygen in the water, affecting the decomposition efficiency of toxic substances such as ammonia and nitrite. While some manufacturers have addressed this by adding an independent air pump to supply air to the filter media area, using airflow to loosen impurities in the pores of the physical filter media and replenish oxygen to the biological filter media, thus alleviating clogging and improving nitrification efficiency, this independent air pump requires a separate power source and control components. This not only increases the overall cost and energy consumption of the device but also necessitates additional handling of the installation compatibility between the air pump and the filter body, as well as the sealing of the air pipe connections, placing higher demands on the device's integration and operational stability. Therefore, those skilled in the art have proposed a detachable multi-layer filter media module for aquarium filters to solve these problems. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a detachable multi-layer filter media module for aquarium filters, which solves the problem that maintenance of existing aquarium filters requires manual insertion into the device, which is cumbersome and prone to leakage or damage.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a detachable aquarium filter multi-layer filter media module, comprising an outer shell, a support plate fixedly connected to the inner wall of the outer shell, two sliding rods mounted on the top of the support plate, two tension springs sleeved on the outer surface of the sliding rods, two sliders slidably connected to the outer surface of the support plate, one slider having a first connecting rod hinged to its top, and the other slider having a second connecting rod hinged to its top, a mounting base slidably mounted on the inner wall of the outer shell, three layers of filter media installed inside the mounting base, the filter media arranged sequentially from top to bottom along the vertical direction of the mounting base, two grooves formed at the bottom of the mounting base, two sliders slidably connected inside the grooves, and an air jet assembly installed inside the outer shell, the air jet assembly being used to intermittently jet gas into the gaps between the filter media to supplement oxygen to the nitrifying bacteria attached to the filter media and break up stagnant water areas in the filter media.

[0006] Through the above technical solution, the sliding of slider two drives the connecting rod to swing, and combined with the sliding of slider one in the bottom groove of the mounting base, the mounting base can be raised and lowered along the inner side wall of the outer shell. This facilitates the exposure of the layered filter media inside the mounting base for disassembly, replacement, and maintenance. At the same time, the jetting component inside the outer shell intermittently jets air into the gaps between the filter media, which can not only supplement the nitrifying bacteria attached to the filter media with oxygen to maintain their activity and ensure the efficiency of biological filtration, but also break up the dead water areas of the filter media and avoid local water quality deterioration. Thus, it achieves the dual effect of convenient filter media maintenance and efficient water purification.

[0007] Preferably, the top of the outer shell is rotatably connected to a rotating plate via a rotating shaft, a rigid traction rope is fixedly installed on one side of the bottom of the rotating plate, a plurality of fixed pulleys are installed on the outer surface of the outer shell, and one end of the rigid traction rope is fixedly connected to the outside of the slider two along the outer surface of the fixed pulleys.

[0008] Through the above technical solution, the rotating plate connected to the top of the outer shell via a rotating shaft serves as the operation triggering component. The rigid traction rope fixed on one side of its bottom can change the direction of force by means of several fixed pulleys installed on the outer surface of the outer shell. When the rotating plate is rotated, the rigid traction rope can pull the second slider to slide along the slide rod on the bearing plate. Then, through the linkage between the second slider and the connecting rod, the mounting seat is lifted and lowered, realizing the convenient exposure of the mounting seat and the internal filter media. This provides convenience for the disassembly, replacement and other maintenance operations of the filter media, simplifies the filter media maintenance process and improves the ease of operation.

[0009] Preferably, one end of the tension spring is fixedly connected to the outer side of the second slider, the other end of the tension spring is fixedly connected to the inner wall of the outer casing, and one end of the second connecting rod is rotatably connected to the bottom end of one of the first sliders.

[0010] Through the above technical solution, one end of the tension spring is connected to the second slider and the other end is connected to the inner wall of the outer shell. It can generate elastic deformation to store the reset potential energy when the second slider is pulled and slides, and can also pull the second slider back to the initial position after the external force of traction disappears, providing power for the lifting and resetting of the mounting base. At the same time, one end of the second connecting rod is hinged to the second slider and the other end is rotatably connected to the first slider in the slide groove at the bottom of the mounting base. This can convert the horizontal sliding of the second slider into the swing of the second connecting rod. Combined with the adaptive sliding of the first slider in the slide groove, it drives the mounting base to rise and fall stably along the inner wall of the outer shell, ensuring the smoothness of the exposed maintenance and repositioning of the filter material, and further optimizing the convenience of filter material maintenance.

[0011] Preferably, the jet assembly includes a fixed cylinder fixedly installed in the inner cavity of the outer shell, a rubber piston slidably connected inside the fixed cylinder, a movable rod fixedly connected to the outer surface of the rubber piston, an air inlet pipe and a jet pipe sequentially connected to the outer surface of the fixed cylinder, and a plurality of nozzles fixedly connected at equal intervals to the outer surface of the jet pipe. The jet assembly is driven by a drive assembly.

[0012] The above technical solution uses a drive assembly to drive a movable rod that moves a rubber piston within a fixed cylinder, creating a pressure change inside the cylinder. This, combined with an air inlet pipe, allows for gas intake, while the air jet pipe and evenly spaced nozzles deliver gas in a directional manner. This provides a stable supply of gas to the gaps in the filter media, replenishing oxygen to the nitrifying bacteria attached to the media to maintain their biochemical decomposition activity. It also breaks up stagnant water areas around the filter media, preventing localized water quality deterioration. Furthermore, no additional manual operation is required; the drive assembly enables automated intermittent air jetting, effectively improving the filtration efficiency of the filter media and the ease of use of the module.

[0013] Preferably, both the intake pipe and the jet pipe are equipped with one-way valves, and the two one-way valves have opposite conduction directions.

[0014] Through the above technical solution, the one-way valves with opposite conduction directions installed inside the air inlet pipe and the jet pipe can strictly limit the gas flow direction, ensuring that external gas can only enter the fixed cylinder through the air inlet pipe, and the gas in the fixed cylinder can only be sprayed into the gap of the filter material through the jet pipe and nozzle. This effectively avoids the problem of jet failure or impurity backflow caused by reverse gas flow, and ensures that the jet assembly can stably and efficiently replenish oxygen to the filter material and break up the dead water area.

[0015] Preferably, the drive assembly includes a connecting seat fixedly installed inside the housing, an impeller movably connected to the inner side of the connecting seat via a bearing, a rotating disk fixedly connected to the outer side of the impeller via a connecting shaft, a drive block fixedly connected to the outer eccentric part of the rotating disk, a movable frame slidably connected to the outer surface of the rotating disk, and a connecting pipe communicating with the outer surface of the connecting seat.

[0016] With the above technical solution, the drive assembly uses the connecting seat as the installation base. The impeller, which is movably connected to the inner side of the connecting seat through the bearing, can rotate under the action of water flow. It drives the rotating disk to rotate synchronously through the connecting shaft. The drive block at the eccentric position on the outside of the rotating disk can rotate with the rotating disk and slide in the movable frame, thereby converting the circular motion into the linear reciprocating motion of the movable frame, providing power for the jet assembly to realize intermittent jetting.

[0017] Preferably, the movable frame has an internal movable slot, the drive block is movably disposed inside the movable slot, and the outer side of the movable frame is fixedly connected to one end of the movable rod.

[0018] Through the above technical solution, the movable groove inside the movable frame provides a movable space for the drive block, allowing the drive block to slide in the movable groove when it makes a circular motion with the rotating disk, thereby converting the circular motion into the linear reciprocating motion of the movable frame; at the same time, the outer side of the movable frame is fixedly connected to one end of the movable rod, which can transmit its own linear reciprocating motion to the movable rod, driving the rubber piston to slide in the fixed cylinder, providing power for the jet assembly to realize gas intake and jetting.

[0019] Preferably, a pump body is mounted on the outer surface of the outer casing, and a connecting pipe is fixedly connected to the output end of the pump body. One end of the connecting pipe is connected to the outside of the connecting seat, and a connecting pipe is fixedly connected to the input end of the pump body. One end of the connecting pipe is mounted on the bottom of the mounting seat.

[0020] Through the above technical solution, the pump body installed on the outer surface of the outer shell serves as the core power source. It draws water that has been pre-treated by the filter media at the bottom of the mounting base through the second input pipe, and then transports the water to the connecting base through the first output pipe. On the one hand, it provides water flow power for the impeller rotation in the connecting base, thereby driving the drive component to drive the jet component to achieve intermittent jetting. On the other hand, it forms a water circulation channel to ensure that the water is continuously purified by the filter media.

[0021] Preferably, a plurality of mounting brackets are installed on the inner side of the mounting base, and three grooves are installed on the inner side of the mounting brackets. The three grooves are slidably connected from top to bottom to pre-filter cotton, biochemical cotton and bacterial cotton, respectively. A movable plate is slidably installed on the front side of the mounting base.

[0022] Through the above technical solution, multiple mounting brackets on the inner side of the mounting base, through three layered grooves, enable the pre-filter cotton, biochemical cotton, and bacterial cotton to slide and install in an orderly manner from top to bottom. This allows the water to undergo layered filtration through physical interception, biochemical decomposition, and deep purification in sequence, improving the water purification effect. At the same time, the movable plate that slides on the front side of the mounting base can be easily opened and closed, facilitating the disassembly, replacement, and maintenance of the three filter media. This further ensures the stability of the filter media's filtration performance and also meets the detachable design requirements of the module, improving ease of use.

[0023] This invention provides a detachable multi-layer filter media module for aquarium filters. It features the following:

[0024] Beneficial effects:

[0025] 1. When the rotating plate is opened, the traction rope drives the slider two to slide, causing the connecting rod to swing and lift the mounting base, allowing the mounting base carrying multiple layers of filter media to rise and be exposed on the outer surface of the device. This design eliminates the need to disassemble the entire device; the filter media can be easily exposed through purely mechanical transmission, significantly simplifying the filter media disassembly process, shortening maintenance time, eliminating additional electric components, reducing manufacturing costs and the risk of failure, preventing filter media damage or water leakage, and effectively improving the ease of use and maintenance efficiency of the device.

[0026] 2. This invention cleverly utilizes the power generated by the pump's pumping process. The water pumped by the pump drives the impeller inside the connecting seat to rotate. The impeller, in conjunction with the rotating disk and the eccentrically positioned drive block, causes the drive block to slide within the movable slot of the movable frame, driving the movable frame to reciprocate left and right. The reciprocating motion of the movable frame further pushes the rubber piston inside the fixed cylinder to slide, causing periodic changes in the air pressure inside the fixed cylinder. Combined with the one-way valves of the air inlet pipe and the jet pipe, automatic gas intake and exhaust are achieved. Finally, the gas is directionally sprayed onto the outer surfaces of the pre-filter cotton and biochemical cotton through the nozzles on the jet pipe. The gas directionally sprayed onto the outer surface of the pre-filter cotton can loosen the impurities trapped in its pores, slowing down the clogging process and extending the cleaning cycle. The gas sprayed onto the outer surface of the biochemical cotton can replenish oxygen to the nitrifying bacteria attached to it, breaking up stagnant water areas and enhancing biochemical filtration efficiency. This design eliminates the need for additional independent air supply components such as air pumps, relying solely on the power of water circulation to simultaneously achieve the intermittent jet function, reducing the overall energy consumption and manufacturing cost of the device. Attached Figure Description

[0027] Figure 1 This is a perspective view of the present invention;

[0028] Figure 2 This is a schematic diagram of the outer shell structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the pre-filter cotton structure of the present invention;

[0030] Figure 4 This is a schematic diagram of the chute structure of the present invention;

[0031] Figure 5 This is a schematic diagram of the second connecting rod structure of the present invention;

[0032] Figure 6 This is a schematic diagram of the mounting base structure of the present invention;

[0033] Figure 7 for Figure 2 Enlarged view of point A in the middle;

[0034] Figure 8 for Figure 3 Enlarged view of point B in the middle;

[0035] Figure 9 This is a schematic diagram of the jet pipe of the present invention;

[0036] Figure 10 This is a schematic diagram of the internal structure of the fixed cylinder of the present invention.

[0037] The components are as follows: 1. Outer shell; 2. Pump body; 301. Rotating plate; 302. Rigid traction rope; 303. Fixed pulley; 4. Connecting pipe one; 5. Connecting pipe two; 601. Mounting base; 602. Slider one; 603. Slide groove; 604. First connecting rod; 605. Second connecting rod; 606. Tension spring; 607. Slider two; 701. Fixed cylinder; 702. Air inlet pipe; 703. Rubber piston; 704. Jet pipe; 705. Movable rod; 706. Nozzle; 801. Connecting seat; 802. Rotating disk; 803. Movable frame; 804. Drive block; 9. Bearing plate; 10. Pre-filter cotton; 11. Mounting frame; 12. Biochemical cotton; 13. Bacterial cotton; 14. Movable plate; 15. Connecting pipe. Detailed Implementation

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Please see the appendix Figure 1 - Appendix Figure 10 This invention provides a detachable multi-layer filter media module for aquariums, including a housing 1. A support plate 9 is fixedly connected to the inner wall of the housing 1. Two sliding rods are installed on the top of the support plate 9, and two tension springs 606 are sleeved on the outer surface of the sliding rods. Two sliders 607 are slidably connected to the outer surface of the support plate 9. One slider 607 has a first connecting rod 604 hinged to its top, and the other slider 607 has a second connecting rod 605 hinged to its top. A mounting base 601 is slidably installed on the inner wall of the housing 1. Three layers of filter media are installed inside the mounting base 601, arranged sequentially from top to bottom along the vertical direction of the mounting base 601. Two grooves 603 are opened at the bottom of the mounting base 601, and two sliders 602 are slidably connected inside the grooves 603. An air jet assembly is installed inside the housing 1. The air jet assembly is used to intermittently spray gas into the gaps between the filter media to supplement oxygen to the nitrifying bacteria attached to the filter media and break up the dead water areas of the filter media.

[0040] Specifically, when slider 2 607 moves horizontally along the sliding rod, it causes the connecting rod to swing. Simultaneously, slider 1 602 adapts by sliding within the groove 603 to adjust the angle of the connecting rod. This transforms the horizontal movement of slider 2 607 into the vertical lifting and lowering of the mounting base 601 along the inner wall of the outer casing 1, allowing for convenient exposure and storage of the mounting base 601. Inside the mounting base 601, three layers of filter media are arranged vertically from top to bottom. Under the stable support of the mounting base 601, the layered structure allows the water to be filtered to pass through the filter media sequentially. The lifting and lowering of the mounting base 601 enables detachable maintenance of the filter media and efficient filtration. The mounting base 601 contains three layers of filter media arranged vertically from top to bottom. This layered arrangement allows the water to be filtered to pass through different functional filter media sequentially, improving water purification through the synergistic effect of physical interception and biochemical decomposition. Meanwhile, the jetting assembly installed inside the outer casing 1 can intermittently inject gas into the gaps between the filter media: on the one hand, the injected gas can directly supplement oxygen to the nitrifying bacteria attached to the surface of the filter media, maintain the activity of the nitrifying bacteria, and ensure their biochemical decomposition efficiency of toxic substances such as ammonia nitrogen and nitrite in the water; on the other hand, the flow of gas in the gaps between the filter media can break up the stagnant water area around the filter media, avoid local water quality deterioration due to water stagnation, further optimize the filtration performance of the filter media, and ensure the long-term stable operation of the module.

[0041] A rotating plate 301 is rotatably connected to the top of the outer casing 1 via a pivot. A rigid traction rope 302 is fixedly installed on one side of the bottom of the rotating plate 301. Several fixed pulleys 303 are installed on the outer surface of the outer casing 1. One end of the rigid traction rope 302 is fixedly connected to the outside of the second slider 607 along the outer surface of the fixed pulleys 303. One end of the tension spring 606 is fixedly connected to the outside of the second slider 607, and the other end of the tension spring 606 is fixedly connected to the inner wall of the outer casing 1. One end of the second connecting rod 605 is rotatably connected to the bottom end of one of the first sliders 602.

[0042] Specifically, when the rotating plate 301 rotates around the axis, the rigid traction rope 302 is pulled and causes the second slider 607 to slide horizontally along the slide rod at the top of the bearing plate 9; at the same time, the tension spring 606 sleeved on the outer surface of the slide rod will undergo elastic deformation as the second slider 607 slides to store the reset potential energy, and the second connecting rod 605, which is hinged to the top of the second slider 607, has its end away from the second slider 607 rotatably connected to the bottom end of the first slider 602, which slides in the slide groove 603 at the bottom of the mounting base 601. Firstly, the horizontal sliding of slider 2 607 will cause the second connecting rod 605 to swing, which in turn, in conjunction with the adaptive sliding of slider 1 602 in the groove 603, transforms the horizontal movement of slider 2 607 into the vertical lifting and lowering movement of mounting base 601 along the inner sidewall of outer shell 1, realizing the convenient exposure and storage of mounting base 601 and internal filter material. Moreover, when the external force of rotating plate 301 disappears, the reset elastic force of tension spring 606 can pull slider 2 607 back to its initial position, causing mounting base 601 to reset synchronously.

[0043] The jet assembly includes a fixed cylinder 701 fixedly installed inside the cavity of the outer casing 1. A rubber piston 703 is slidably connected inside the fixed cylinder 701. A movable rod 705 is fixedly connected to the outer surface of the rubber piston 703. An air inlet pipe 702 and a jet pipe 704 are sequentially connected to the outer surface of the fixed cylinder 701. Several nozzles 706 are fixedly connected at equal intervals to the outer surface of the jet pipe 704. The jet assembly is driven by a drive assembly. Both the air inlet pipe 702 and the jet pipe 704 are equipped with one-way valves, and the two one-way valves have opposite conduction directions.

[0044] Specifically, several nozzles 706, equidistantly fixed on the outer surface of the jet pipe 704, are used to uniformly guide the gas to the filter media area. Simultaneously, both the inlet pipe 702 and the jet pipe 704 are equipped with one-way valves with opposite directions of flow, ensuring that gas can only enter the fixed cylinder 701 from the inlet pipe 702 and exit the fixed cylinder 701 from the jet pipe 704, preventing reverse airflow. During operation, the jet assembly is powered by a drive assembly, which drives the movable rod 705 to reciprocate, thereby pushing the rubber piston 703 to slide within the fixed cylinder 701. This creates periodic pressure changes within the fixed cylinder 701. When the rubber piston 703 moves, causing a decrease in pressure within the fixed cylinder 701, external gas enters through the inlet pipe 702. When the rubber piston 703 moves, causing an increase in pressure within the fixed cylinder 701, internal gas is injected into the filter media gaps through the jet pipe 704 and the nozzles 706, achieving an intermittent jet function.

[0045] The drive assembly includes a connecting seat 801 fixedly installed inside the outer casing 1. An impeller is movably connected to the inner side of the connecting seat 801 via a bearing. A rotating disk 802 is fixedly connected to the outer side of the impeller via a connecting shaft. A drive block 804 is fixedly connected to the outer eccentric part of the rotating disk 802. A movable frame 803 is slidably connected to the outer surface of the rotating disk 802. A connecting pipe 15 communicates with the outer surface of the connecting seat 801. A movable slot is formed inside the movable frame 803, and the drive block 804 is movably disposed inside the movable slot. One end of the movable rod 705 is fixedly connected to the outer side of the movable frame 803.

[0046] Specifically, the water flow through the connecting seat 801 drives the impeller to rotate. The impeller, in conjunction with the rotating disk 802 and the eccentric drive block 804, performs circular motion. The drive block 804 slides in the movable groove of the movable frame 803, converting the circular motion into the linear reciprocating motion of the movable frame 803. This, in turn, drives the movable rod 705 to move synchronously back and forth, providing power for the sliding of the rubber piston 703 in the jet assembly, thus realizing the intermittent jet function of the jet assembly.

[0047] A pump body 2 is mounted on the outer surface of the outer casing 1. A connecting pipe 4 is fixedly connected to the output end of the pump body 2. One end of the connecting pipe 4 is connected to the outer side of the connecting seat 801. A connecting pipe 5 is fixedly connected to the input end of the pump body 2. One end of the connecting pipe 5 is installed at the bottom of the mounting seat 601. Multiple mounting brackets 11 are mounted on the inner side of the mounting seat 601. Three grooves are mounted on the inner side of the mounting brackets 11. Pre-filter cotton 10, biochemical cotton 12, and bacterial cotton 13 are slidably connected to the three grooves from top to bottom, respectively. A movable plate 14 is slidably mounted on the front side of the mounting seat 601.

[0048] Specifically, during operation, the pump body 2 can draw water that has been filtered by the filter media inside the mounting base 601 and transport the water to the connecting base 801 to drive the drive assembly, forming a water circulation channel. At the same time, multiple mounting brackets 11 inside the mounting base 601 are slidably connected to the pre-filter cotton 10, biochemical cotton 12, and bacterial cotton 13 through three layered grooves, so that the three types of filter media are arranged in an orderly manner from top to bottom in the vertical direction, which can filter the water in layers. The pre-filter cotton 10 initially intercepts impurities, the biochemical cotton 12 performs biochemical decomposition, and the bacterial cotton 13 deeply purifies. The movable plate 14 slidably installed on the front side of the mounting base 601 can open and close the filter media loading and unloading port, which is convenient for the disassembly, replacement and maintenance of the filter media.

[0049] Working principle: The specific operating principle of this device is as follows:

[0050] After the filter is installed on the outer wall of the aquarium equipment, the pump body 2 is started. The water to be filtered in the aquarium equipment is transported through the pipe to the connecting pipe 4 and enters the connecting seat 801 along the connecting pipe 4, forming a continuous water circulation channel. When the water flows through the connecting seat 801 at high speed, it will drive the impeller inside, which is movably connected by the bearing, to rotate. The impeller is fixedly connected to the rotating disk 802 through the connecting shaft, so the rotation of the impeller will synchronously drive the rotating disk 802 to rotate. The drive block 804, which is fixed at the eccentric part of the rotating disk 802, will also move eccentrically. Since the drive block 804 is movably fitted into the movable groove inside the movable frame 803, the eccentrically moving drive block 804 will drive the movable frame 803 to make a left-right reciprocating linear motion along the outer surface of the rotating disk 802. The reciprocating motion of the movable frame 803 can directly drive the movable rod 705 to move synchronously, thereby pushing the rubber piston 703 inside the fixed cylinder 701 to slide left-right along the cylinder wall, changing the air pressure state inside the fixed cylinder 701.

[0051] When the rubber piston 703 slides towards the moving rod 705, the internal volume of the fixed cylinder 701 increases and the air pressure decreases. At this time, the one-way valve in the air inlet pipe 702 opens and the one-way valve in the jet pipe 704 closes, and outside air is drawn into the fixed cylinder 701 through the air inlet pipe 702 and stored inside.

[0052] When the rubber piston 703 slides away from the movable rod 705, the internal volume of the fixed cylinder 701 decreases and the air pressure increases. At this time, the one-way valve in the air inlet pipe 702 closes and the one-way valve in the jet pipe 704 opens. The compressed air in the fixed cylinder 701 is transported along the jet pipe 704 to the nozzles 706 that are evenly distributed on its outer surface, and is then directionally sprayed by the nozzles 706 onto the filter material area.

[0053] Part of the airflow is sprayed from bottom to top, which can loosen the impurities trapped in the pores of the pre-filter cotton 10, slow down the clogging speed of the filter media, and extend its cleaning cycle; another part of the airflow is sprayed from top to bottom, which can replenish oxygen for the nitrifying bacteria attached to the surface of the biochemical cotton 12, while breaking up the dead water area in the gaps of the filter media, improving the decomposition efficiency of nitrifying bacteria on toxic substances such as ammonia nitrogen and nitrite in the water, and enhancing the biochemical filtration effect.

[0054] The clean water, filtered sequentially by three layers of filter media—pre-filter cotton 10 (physical interception), biochemical cotton 12 (biochemical decomposition), and bacterial cotton 13 (deep purification)—is finally returned to the aquarium equipment through the connecting pipe 15, completing a full water filtration cycle.

[0055] When the filter media needs to be replaced or cleaned after a period of use, thanks to the device's detachable design, filter media maintenance can be completed without disassembling the entire filter by following these steps:

[0056] Manually rotating the rotating plate 301 connected to the top of the outer casing 1 via a rotating shaft upwards causes one end of the rigid traction rope 302 fixed to one side of the bottom of the rotating plate 301 to be pulled upwards. The rigid traction rope 302 slides along several fixed pulleys 303 installed on the outer surface of the outer casing 1, and its other end pulls the second slider 607 slidably connected to the outer surface of the support plate 9, causing the second slider 607 to slide along the sliding rod at the top of the support plate 9 towards the inner wall of the outer casing 1. During this process, the tension spring 606 connected to the outside of the second slider 607 is stretched and stores force. When the second slider 607 slides, the first connecting rod 604 and the second connecting rod 605 hinged at its top swing synchronously. Since the end of the second connecting rod 605 away from the slider 607 is rotatably connected to the bottom end of the slider 602 that is slidably connected in the bottom groove 603 of the mounting base 601, and the first connecting rod 604 is similarly connected to the other slider 602, the swinging of the first connecting rod 604 and the second connecting rod 605 will generate an upward supporting force, pushing the mounting base 601 to move upward along the sliding track on the inner side wall of the outer shell 1 until the mounting base 601 is completely exposed outside the outer shell 1, realizing the detachable exposure of the filter material bearing structure.

[0057] After the mounting base 601 is exposed, manually slide the movable plate 14 on its front side upwards to reveal the three layered grooves on the mounting bracket 11 inside the mounting base 601. The three grooves are respectively adapted to the pre-filter cotton 10, biochemical cotton 12, and bacterial cotton 13. The corresponding filter media can be directly pulled out from the groove to complete the disassembly. When replacing the new filter media, slide the new filter media into the groove and reset the movable plate 14. Then rotate the rotating plate 301 in the opposite direction. The tension spring 606 releases its elastic force and pulls the slider 607 to reset. The first connecting rod 604 and the second connecting rod 605 swing to make the mounting base 601 fall back into the outer shell 1, completing the filter media maintenance and device reset.

[0058] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detachable aquarium filter multi-layer filter media module, comprising a housing (1), characterized in that, The inner wall of the outer shell (1) is fixedly connected to a support plate (9). Two slide rods are installed on the top of the support plate (9). Two tension springs (606) are sleeved on the outer surface of the slide rods. Two sliders (607) are slidably connected to the outer surface of the support plate (9). One slider (607) is hinged to the top of a first connecting rod (604), and the other slider (607) is hinged to the top of a second connecting rod (605). A mounting base (605) is slidably installed on the inner wall of the outer shell (1). 1) The mounting base (601) is equipped with three layers of filter media. The filter media are arranged from top to bottom along the vertical direction of the mounting base (601). The bottom of the mounting base (601) has two sliding grooves (603). The sliding grooves (603) are slidably connected to two sliders (602). The outer shell (1) is equipped with an air jet assembly. The air jet assembly is used to intermittently spray gas into the gaps between the filter media to supplement oxygen to the nitrifying bacteria attached to the filter media and break up the dead water area of ​​the filter media.

2. The detachable multi-layer filter media module for an aquarium filter according to claim 1, characterized in that, The top of the outer shell (1) is rotatably connected to a rotating plate (301) via a rotating shaft. A rigid traction rope (302) is fixedly installed on one side of the bottom of the rotating plate (301). Several fixed pulleys (303) are installed on the outer surface of the outer shell (1). One end of the rigid traction rope (302) is fixedly connected to the outside of the slider (607) along the outer surface of the fixed pulley (303).

3. The detachable multi-layer filter media module for an aquarium filter according to claim 1, characterized in that, One end of the tension spring (606) is fixedly connected to the outer side of the second slider (607), and the other end of the tension spring (606) is fixedly connected to the inner wall of the outer shell (1). One end of the second connecting rod (605) is rotatably connected to the bottom end of one of the first sliders (602).

4. A detachable multi-layer filter media module for an aquarium filter according to claim 1, characterized in that, The jet assembly includes a fixed cylinder (701) fixedly installed in the inner cavity of the outer shell (1). A rubber piston (703) is slidably connected inside the fixed cylinder (701). A movable rod (705) is fixedly connected to the outer surface of the rubber piston (703). An air inlet pipe (702) and a jet pipe (704) are sequentially connected to the outer surface of the fixed cylinder (701). A plurality of nozzles (706) are fixedly connected at equal intervals to the outer surface of the jet pipe (704). The jet assembly is driven by a drive assembly.

5. A detachable multi-layer filter media module for an aquarium filter according to claim 4, characterized in that, Both the intake pipe (702) and the jet pipe (704) are equipped with one-way valves, and the two one-way valves have opposite conduction directions.

6. A detachable aquarium filter multi-layer filter media module according to claim 4, characterized in that, The drive assembly includes a connecting seat (801) fixedly installed inside the outer casing (1). An impeller is movably connected to the inner side of the connecting seat (801) via a bearing. A rotating disk (802) is fixedly connected to the outer side of the impeller via a connecting shaft. A drive block (804) is fixedly connected to the outer eccentric part of the rotating disk (802). A movable frame (803) is slidably connected to the outer surface of the rotating disk (802). A connecting pipe (15) is connected to the outer surface of the connecting seat (801).

7. A detachable multi-layer filter media module for an aquarium filter according to claim 6, characterized in that, The movable frame (803) has an internal movable slot, and the drive block (804) is movably disposed inside the movable slot. The outer side of the movable frame (803) is fixedly connected to one end of the movable rod (705).

8. A detachable aquarium filter multi-layer filter media module according to claim 6, characterized in that, The outer surface of the outer shell (1) is fitted with a pump body (2). The output end of the pump body (2) is fixedly connected to a connecting pipe (4). One end of the connecting pipe (4) is connected to the outside of the connecting seat (801). The input end of the pump body (2) is fixedly connected to a connecting pipe (5). One end of the connecting pipe (5) is installed at the bottom of the mounting seat (601).

9. A detachable aquarium filter multi-layer filter media module according to claim 1, characterized in that, The mounting base (601) has multiple mounting brackets (11) installed on its inner side. The mounting brackets (11) have three grooves installed on their inner sides. The three grooves are connected in sequence from top to bottom to a pre-filter cotton (10), a biochemical cotton (12), and a bacterial cotton (13). The mounting base (601) has a movable plate (14) slidably installed on its front side.

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