A smart backwashable aquarium filtration system based on sand filtration

Abstract

This utility model discloses an intelligent backwashable aquarium filtration system based on sand filtration, including a filter assembly, a backwashing assembly, an automatic water changing assembly, and an automatic water replenishment assembly. The filter assembly includes a sand tank. The backwashing assembly cleans the sand filter layer in the sand tank. The automatic water changing assembly prevents residual tap water in the sand tank and pipes from flowing into the aquarium by flushing away the tap water with purified water from the aquarium. The automatic water replenishment assembly replenishes the aquarium with purified water, allowing tap water to flow through the purified water assembly before entering the aquarium. This system uses river sand filtration and automatically backwashes the sand filter layer, resulting in better filtration than existing filters. It requires no manual operation and can clean the filter promptly. Employing purified water RO membrane filtration technology, a level switch controls a solenoid valve to automatically replenish purified water to the aquarium and automatically backwash the RO membrane, achieving long-term use without manual operation.

Description

Technical Field

[0001] This utility model relates to the field of aquarium filter technology, and in particular to an intelligent backwashable aquarium filtration system based on sand filtration. Background Technology

[0002] Currently, most ornamental fish tanks use technologies with the following technical shortcomings:

[0003] 1. Existing filtration systems use filter cotton, filter screens, etc., to circulate and filter the aquarium water. The following technical problems exist in maintaining these filtration systems: the filter cotton and filter screens need to be replaced or cleaned regularly to maintain filtration effectiveness; the filter mesh size is only around 200-300 mesh; manual cleaning of the filter is dirty and smelly; and if cleaning is forgotten, the aquarium water will become cloudy and smelly.

[0004] 2. Water Changes: After feeding the fish, the water quality easily deteriorates, requiring frequent and regular water changes. If the water isn't changed for a long time, large amounts of ammonia nitrogen will accumulate, causing the fish to become sick or even die. Current technology uses siphons or drain valves to manually change the water in the fish tank, which is time-consuming and labor-intensive.

[0005] 3. Using tap water to raise fish: Putting tap water in the fish tank and replenishing it with tap water. Tap water contains residual chlorine, which can harm the health of fish. It also contains a large amount of calcium and magnesium ions, which will form scale over time. It is difficult to clean the fish tank walls, and the water pump and the inside of the pipes will also be covered with scale, affecting the operation of the water pump or causing damage. Utility Model Content

[0006] The purpose of this invention is to provide an intelligent backwashable aquarium filtration system based on sand filtration, so as to help fish lovers to easily raise fish without cleaning the filter, changing the water, adding water, or worrying about scale buildup on the tank walls and water pump. This will increase the enjoyment of fishkeeping.

[0007] To achieve the above objectives, this utility model provides an intelligent backwashable aquarium filtration system based on sand filtration, comprising: an aquarium, a circulation pump for drawing water from the aquarium, a one-way valve connected to the circulation pump, a filter assembly, and an outlet valve leading to the aquarium, all connected in sequence; the filter assembly includes a sand tank with openings at the top and bottom, and the sand tank includes a sand filter layer.

[0008] Preferably, the system further includes a backwashing assembly for cleaning the sand filter layer in the sand tank. The backwashing assembly includes a water inlet valve and a drain valve controlled by a time-cycle relay. The water inlet valve is located between the water supply and the bottom of the sand tank, and the drain valve is located between the top of the sand tank and the sewer.

[0009] Preferably, the system further includes an automatic water-changing component to prevent residual tap water in the sand tank and pipes from flowing into the fish tank. The automatic water-changing component includes a drain valve controlled by a time-cycle relay, the drain valve being located below the sand tank and between the drain and the sewer.

[0010] Preferably, the system further includes an automatic water replenishment component for replenishing the fish tank with purified water. The automatic water replenishment component includes a level switch installed in the fish tank, a purified water valve connected to tap water, and a water purification component installed between the purified water valve and the fish tank. The level switch controls the opening and closing of the purified water valve via a relay.

[0011] Preferably, the water purification component is also connected to an RO flushing valve and a flow restrictor leading to the sewer, for discharging wastewater generated by the water purification component, and the RO flushing valve is controlled by a time-cycle relay.

[0012] Preferably, the water purification component includes a fine PP filter cotton and an RO membrane connected in sequence.

[0013] Preferably, a time-delay relay is provided between the tap water inlet valve and the bottom of the sand tank to prevent the pressure inside the sand tank from rising rapidly.

[0014] Preferably, the outlet valve is configured as a normally open solenoid valve.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This system uses river sand filtration. After the filter has been working for a period of time, the inlet and outlet solenoid valves are controlled by a time cycle relay to automatically backwash the sand filter layer and remove the dirt from the filter. The filtration accuracy is about 300-400 mesh, and the filtration effect is better than existing filters. No manual operation is required and the filter can be cleaned in time.

[0017] During the backwashing process, the system automatically opens the tap water inlet solenoid valve to backwash the sand layer in the sand tank. After the backwashing is completed, the tap water in the sand tank is drained out of the aquarium through the drain valve using purified water from the aquarium. This not only drains the tap water from the sand tank and pipes, but also changes the water in the aquarium. Each water change is about 20% of the aquarium's volume, and no manual operation is required.

[0018] This system uses RO membrane filtration technology to convert tap water into pure water, which is free of residual chlorine and calcium and magnesium ions. The system uses a level switch to control the solenoid valve to automatically replenish the aquarium with pure water and automatically backwash the RO membrane to achieve long-term use. The entire process does not require manual operation. Attached Figure Description

[0019] Figure 1A schematic diagram of the connection structure of an intelligent backwashable aquarium filtration system based on sand filtration provided for an embodiment of this utility model;

[0020] Figure 2 A schematic diagram of the automatic water replenishment connection structure of an intelligent backwashable aquarium filtration system based on sand filtration provided for an embodiment of this utility model;

[0021] Figure 3 One of the control connection diagrams of an intelligent backwashable aquarium filtration system based on sand filtration provided for an embodiment of this utility model;

[0022] Figure 4 This is the second control connection diagram of an intelligent backwashable aquarium filtration system based on sand filtration, provided for an embodiment of this utility model.

[0023] Attached reference numerals: S1, circulating pump; F1, outlet valve; F2, drain valve; F3, RO flushing valve; F5, tap water inlet valve; F6, drain valve; F7, purified water supply valve; F8, level switch. Detailed Implementation

[0024] In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, top, bottom, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or IoT terminal that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or IoT terminals.

[0025] Furthermore, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0027] This invention combines a sand filter backwashing system for producing pure water in a factory to create an intelligent backwashable aquarium filtration system based on sand filtration, which automatically replenishes pure water, changes water automatically, and cleans the filter.

[0028] like Figure 1 As shown, this utility model provides an intelligent backwashable aquarium filtration system based on sand filtration, comprising: an aquarium, a circulation pump S1 for drawing water from the aquarium, a one-way valve connected to the circulation pump S1, a filter assembly, and an outlet valve F1 leading to the aquarium; the filter assembly includes a sand tank with openings at the top and bottom, and the sand tank includes a sand filter layer.

[0029] In one specific embodiment of this application, the sand tank uses river sand with a size of 0.45 mm to 1.18 mm (16-40 mesh) as the sand filter layer, with a water collection net at the bottom, and is sealed in a cylindrical tank with openings at the top and bottom. The aquarium submersible pump is a 12V, 800 liters per hour, dust-raising brushless pump (S1 circulation pump) with a dust emission of 5 meters. The S1 circulation pump pumps water from the aquarium into the sand tank from the top through a one-way valve. At this time, the F6 drain valve is closed, the F5 tap water inlet valve is closed, the F2 drain valve is closed, and the F1 outlet valve is open (a normally open solenoid valve can be used). The pressure difference allows the water to flow from the top of the filter layer downwards, trapping impurities in the water above the sand filter layer, while clean water flows from the bottom of the sand layer into the aquarium, achieving the filtration effect.

[0030] Furthermore, the system also includes a backwashing assembly for cleaning the sand filter layer in the sand tank. The backwashing assembly includes a tap water inlet valve F5 and a drain valve F6, which are controlled by a time-cycle relay. The tap water inlet valve F5 is located between the tap water and the bottom of the sand tank, and the drain valve F6 is located between the top of the sand tank and the sewer.

[0031] In one specific embodiment of this application, the sand tank has one solenoid valve controlling each of its upper and lower outlets. The top outlet is a drain valve (F6) controlling the backwash wastewater discharge, and the bottom outlet is a valve (F5 tap water inlet valve) controlling the inflow of tap water into the tank for backwashing the sand tank. During the backwashing process, after the S1 circulation pump has been running for a certain period of time, the S1 circulation pump is shut off using a time cycle relay switch, the F5 tap water inlet valve is opened, the F6 drain valve is opened to connect to the sewer, the F1 outlet valve is closed, and the F2 drain valve is closed. Tap water flows in from the bottom of the sand tank through the F5 tap water inlet valve, and the impurities above the sand layer are discharged through the F6 drain valve for 240 seconds of backwashing to clean the filter layer. After the backwashing time is over, the F6 drain valve and the F5 tap water inlet valve are closed. The one-way valve prevents tap water from flowing into the fish tank through the S1 circulation pump during backwashing.

[0032] Furthermore, the system also includes an automatic water-changing component to prevent residual tap water in the sand tank and pipes from flowing into the fish tank. The automatic water-changing component includes a drain valve F2 controlled by a time-cycle relay, which is located below the sand tank and between the drain and the sewer.

[0033] In one specific embodiment of this application, after backwashing is completed, the S1 circulation pump runs. At this time, the time cycle relay controls the F6 drain valve to close, the F5 tap water inlet valve to close, the F1 outlet valve to close, and the F2 drain valve to open. The purified water in the fish tank is used to drain the tap water remaining in the sand tank and pipes through the F2 drain valve. Each draining time is 15 seconds. The purpose of this system is to prevent the tap water remaining in the sand tank and pipes from flowing into the fish tank and causing scale buildup over time. At the same time, the water in the fish tank is changed, and the amount of water changed each time is about one-quarter of the total water volume in the fish tank.

[0034] like Figure 2 As shown, the system also includes an automatic water replenishment component for replenishing the fish tank with purified water. The automatic water replenishment component includes a level switch F8 installed in the fish tank, a purified water valve F7 connected to tap water, and a water purification component installed between the purified water valve F7 and the fish tank. The level switch F8 controls the opening and closing of the purified water valve F7 via a relay.

[0035] The water purification assembly is also connected to an RO flushing valve F3 and a flow restrictor leading to the sewer, for discharging wastewater generated by the water purification assembly. The RO flushing valve F3 is controlled by a time-cycle relay. The water purification assembly includes a fine PP filter and an RO membrane connected in sequence.

[0036] In one specific embodiment of this application, automatic water replenishment utilizes an existing low-pressure purified water generator. An F7 purified water replenishment valve is connected to the fine filter inlet, followed by tap water. An F8 level switch is installed in the fish tank. When the fish tank level drops, such as... Figure 4As shown, the F8 level switch controls the F7 pure water replenishment valve to open automatically, allowing tap water (water pressure 0.2-0.35Mpa) to enter the PP cotton filter → reverse osmosis (Ro) membrane → pure water (to the fish tank). When the level rises to a certain position, the F7 pure water replenishment valve closes, completing the water replenishment.

[0037] RO membrane flushing process: When the F7 purified water valve is opened, the F3 RO flushing valve opens simultaneously for 15 seconds and then closes. This allows a large amount of tap water to flow over the RO membrane surface to flush it, achieving the purpose of cleaning the RO membrane and increasing its service life. When the F3 RO flushing valve is open, the pressure of the flushing water is essentially released directly from the RO flushing valve, preventing water from passing through the flow restrictor. When the F3 RO flushing valve is closed, the flow restrictor, which can be a small orifice in the pipe, comes into play, controlling the ratio of purified water to wastewater to approximately 1:1 to 1:3.

[0038] Furthermore, a time-delay relay can be installed between the tap water inlet valve F5 and the bottom of the sand tank to prevent the pressure inside the sand tank from rising rapidly.

[0039] In one specific embodiment of this application, such as Figure 3 As shown, a time-cycle relay is used to precisely control the time. The first time-cycle relay is set to control two circuits. For example, one circuit (S1 circulating pump) is set to run for 24 hours, and the other circuit (F5-F6) runs for 240 seconds when it is powered on. When one circuit is powered on, the other circuit is not powered on. When the power outage of one circuit is completed after 24 hours, the other circuit is automatically powered on and runs for 240 seconds.

[0040] Set a second time-cycle relay to control three circuits, which will energize F1, F2, and F3 respectively. F2 and F3 will only be energized for 15 seconds before automatically de-energizing.

[0041] Compared with the prior art, the beneficial effects of this utility model are:

[0042] This system uses river sand filtration. After the filter has been working for a period of time, the inlet and outlet solenoid valves are controlled by a time cycle relay to automatically backwash the sand filter layer and remove the dirt from the filter. The filtration accuracy is about 300-400 mesh, and the filtration effect is better than existing filters. No manual operation is required and the filter can be cleaned in time.

[0043] During the backwashing process, the system automatically opens the tap water inlet solenoid valve to backwash the sand layer in the sand tank. After the backwashing is completed, the tap water in the sand tank is drained out of the aquarium through the drain valve using purified water from the aquarium. This not only drains the tap water from the sand tank and pipes, but also changes the water in the aquarium. Each water change is about 20% of the aquarium's volume, and no manual operation is required.

[0044] This system uses RO membrane filtration technology to convert tap water into pure water, which is free of residual chlorine and calcium and magnesium ions. The system uses a level switch to control the solenoid valve to automatically replenish the aquarium with pure water and automatically backwash the RO membrane to achieve long-term use. The entire process does not require manual operation.

[0045] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the specific details described above. The above description is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features of this application.

[0046] The above are merely preferred embodiments of this application and are not intended to limit the scope of this application. Any modifications or equivalent substitutions made within the spirit and principles of this application shall be included within the protection scope of this application.

[0047] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sand filter based intelligent backwashable fish tank filtration system, characterized in that, include: The aquarium, a circulation pump (S1) for drawing water from the aquarium, a one-way valve connected to the circulation pump (S1), a filter assembly, and an outlet valve (F1) leading to the aquarium are connected in sequence; the filter assembly includes a sand container with openings at the top and bottom, and the sand container includes a sand filter layer.

2. A sand filter based intelligent backwashable fish tank filtration system as claimed in claim 1, wherein, It also includes a backwashing assembly for cleaning the sand filter layer in the sand tank. The backwashing assembly includes a water inlet valve (F5) and a drain valve (F6) controlled by a time cycle relay. The water inlet valve (F5) is located between the water inlet and the bottom of the sand tank, and the drain valve (F6) is located above the sand tank and between the drain and the sewer.

3. A sand filter based intelligent backwashable fish tank filtration system as claimed in claim 2, wherein, It also includes an automatic water-changing assembly to prevent residual tap water in the sand tank and pipes from flowing into the aquarium. The automatic water-changing assembly includes a drain valve (F2) controlled by a time-cycle relay, which is located below the sand tank and between the drain and the sewer.

4. A sand filter based intelligent backwashable fish tank filtration system as claimed in claim 1, wherein, It also includes an automatic water replenishment component for replenishing the fish tank with purified water. The automatic water replenishment component includes a level switch (F8) installed in the fish tank, a purified water replenishment valve (F7) connected to tap water, and a water purification component installed between the purified water replenishment valve (F7) and the fish tank. The level switch (F8) controls the opening and closing of the purified water replenishment valve (F7) through a relay.

5. A sand filter based intelligent backwashable fish tank filtration system as claimed in claim 4, wherein, The water purification unit is also connected to an RO flushing valve (F3) and a flow restrictor leading to the sewer, for discharging wastewater generated by the water purification unit. The RO flushing valve (F3) is controlled by a time-cycle relay.

6. A sand filter based intelligent backwashable fish tank filtration system as claimed in claim 5, wherein, The water purification component includes a fine PP filter cotton and an RO membrane connected in sequence.

7. A sand filter based intelligent backwashable fish tank filtration system as claimed in claim 2, wherein, A time-delay relay is installed between the tap water inlet valve (F5) and the bottom of the sand tank to prevent the pressure inside the sand tank from rising rapidly.

8. A sand filter based intelligent backwashable fish tank filtration system as claimed in claim 1, wherein, The outlet valve (F1) is configured as a normally open solenoid valve.

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