A domestic filtration apparatus

Abstract

The utility model provides a kind of household filtering equipment, it is related to sewage treatment technical field.The utility model includes water collecting tank, filter tank and reflux device, water collecting tank includes multiple grid bins sequentially arranged, domestic sewage sequentially flows through multiple grid bins.Filter tank is installed above water collecting tank, and with the supporting plate located at bottom, supporting plate is equipped with multiple filter holes, and filter material is placed in filter tank.Reflux device includes drive pump and reflux pipe, the first end of reflux pipe is communicated with second grid bin, and second end is located in filter tank, drive pump is controlled to drive liquid in second grid bin to be transported to filter tank by reflux pipe, then it is returned to the water collecting tank by filter hole, thereby forming circulation loop, and domestic sewage can be circularly filtered, liquid in second grid bin is discharged from self-flow outlet when reaching self-flow outlet height, and domestic sewage after multiple filtration is discharged to natural environment, which can avoid environmental pollution.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a household filtration device. Background Technology

[0002] Like regular domestic sewage, village domestic sewage also includes toilet wastewater, kitchen wastewater, washing wastewater, bathing wastewater, etc. Domestic sewage contains a large amount of organic matter, bacteria and germs. If it is discharged directly without treatment, it will cause significant pollution to the environment. As people's living standards continue to improve and their environmental awareness gradually increases, people's requirements for domestic sewage treatment are also getting higher and higher.

[0003] With the improvement of rural living standards and changes in rural lifestyles, the amount of rural domestic sewage generated has also increased. Simply using septic tanks to collect rural domestic sewage is no longer enough to meet the needs of villagers for rural environmental management and beautiful villages. Therefore, for farmers who cannot collect and treat domestic sewage in a centralized manner, there is a need for a single-household sewage treatment device suitable for their installation and use.

[0004] Currently, many rural areas still rely on natural wastewater disposal, with large amounts of sewage and waste being directly discharged into the environment, causing continuous deterioration of the rural environment. Furthermore, due to the scattered nature of rural pollution discharges, management departments find it difficult to monitor them promptly and accurately. Therefore, there is an urgent need to design a wastewater treatment device capable of treating rural wastewater. Utility Model Content

[0005] One objective of this invention is to provide a household filtration device that solves the technical problem of environmental pollution caused by the natural discharge of sewage from farmers in the prior art.

[0006] A further objective of this invention is to improve wastewater utilization rate.

[0007] Specifically, this utility model provides a household filtration device, comprising:

[0008] A water collection tank includes multiple compartments arranged in sequence, with adjacent compartments connected. The two outermost compartments are the first compartment and the second compartment, respectively. The first compartment is provided with an inlet for conveying domestic sewage, and the second compartment is provided with a gravity outlet.

[0009] A water filter tank is installed above the water collection tank and has a support plate at the bottom. The support plate has multiple filter holes, and filter material is placed inside the water filter tank.

[0010] The reflux device includes a drive pump and a reflux pipe. The reflux pipe has a first end and a second end. The first end is connected to the second compartment, and the second end is located inside the filter tank. The drive pump controls the liquid in the second compartment to be transported to the filter tank through the reflux pipe, and then returns to the collection tank through the filter holes, thereby forming a circulation loop. When the liquid in the second compartment reaches the height of the gravity outlet, it is discharged from the gravity outlet.

[0011] Optionally, it also includes:

[0012] Multiple water pipes are installed between two adjacent cell compartments, and each water pipe has a first pipe opening and a second pipe opening, wherein the first pipe opening is located in the upstream cell compartment and the second pipe opening is located in the downstream cell compartment.

[0013] Optionally, the first opening of each water pipe is located in the middle section of the corresponding compartment, and the height of the second opening is lower than the height of the first opening.

[0014] Optionally, the reflux device further includes:

[0015] The water distribution pipe is connected to the return pipe and has multiple branch pipes. The multiple branch pipes are evenly arranged on the top of the water filter tank and each has at least one water distribution outlet. The multiple return water distribution outlets are evenly arranged inside the water filter tank.

[0016] Optionally, the return pipe further has a third end for irrigation, and the return device further includes:

[0017] At least one control valve is installed on the return pipe, the control valve being configured to controllably direct the liquid from the first end to the second end or the third end.

[0018] Optionally, at least a portion of the water collection tank is located underground, while the water filter tank is located above ground.

[0019] The gravity-flow outlet is located below ground level.

[0020] Optionally, it also includes:

[0021] An overflow pipe is installed inside the water filter tank and its bottom is connected to the first compartment. When the liquid in the water filter tank reaches a preset height, it flows from the top of the overflow pipe into the first compartment.

[0022] Optionally, the second compartment further includes a self-priming outlet, the first end of the return pipe passes through the self-priming outlet and is located inside the second compartment, and the drive pump is a circulation pump and is installed on the return pipe.

[0023] Optionally, it also includes:

[0024] The water outlet well is partially located underground and partially located above ground. The drive pump is located inside the water outlet well and is installed on the return pipe.

[0025] A connecting pipe is installed underground, with one end connected to the second compartment and the other end connected to the outlet well;

[0026] The drive pump is configured to controllably pump the wastewater in the second compartment through the connecting pipe into the outlet well and then into the return pipe.

[0027] Optionally, when the driving pump is a circulating pump, the household filtration device further includes a lifting chain, one end of which is connected to the driving pump and the other end is connected to the top of the outlet well;

[0028] When the driving pump is an air lift pump, the household filtration device also includes an air pump connected to the air lift pump and located at the top of the outlet well.

[0029] This utility model includes a water collection tank, a water filter tank, and a return flow device. The water collection tank comprises multiple compartments arranged in sequence, through which domestic sewage flows sequentially. The water filter tank is installed above the water collection tank and has a support plate at the bottom with multiple filter holes. Filter material is placed inside the water filter tank. The return flow device includes a drive pump and a return pipe. The first end of the return pipe is connected to a second compartment, and the second end is located inside the water filter tank. The drive pump controls the liquid in the second compartment to be transported through the return pipe to the water filter tank, and then returns to the water collection tank through the filter holes, thus forming a circulation loop for circulating filtration of domestic sewage. When the liquid in the second compartment reaches the height of the gravity outlet, it is discharged from the gravity outlet. After multiple filtrations, the domestic sewage is then discharged into the natural environment, avoiding environmental pollution.

[0030] Furthermore, in this invention, the return pipe also has a third end for irrigation, and the return device further includes at least one control valve installed on the return pipe. The control valve is configured to controllably direct the liquid from the first end to the second or third end. By providing a third end on the return pipe, the above technical solution allows treated wastewater to be used for irrigation of vegetable gardens or the ground, thereby improving wastewater utilization.

[0031] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0032] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0033] Figure 1 This is a schematic structural diagram of a household filtration device according to an embodiment of the present utility model;

[0034] Figure 2 This is a schematic side view of a water distribution pipe according to an embodiment of the present utility model;

[0035] Figure 3 This is a schematic top view of a water distribution pipe according to an embodiment of the present utility model;

[0036] Figure 4 This is a schematic structural diagram of a household filtration device according to another embodiment of the present utility model;

[0037] Figure 5 This is a schematic structural diagram of a household filtration device according to another embodiment of the present utility model.

[0038] Figure label:

[0039] 100-Household filtration equipment, 10-Water collection tank, 20-Filter tank, 30-Return pipe, 40-Overflow pipe, 50-Control cabinet, 60-Water pipe, 70-Control valve, 80-Drive pump, 90-Water distribution pipe, 11-First compartment, 12-Second compartment, 13-Third compartment, 61-First inlet, 62-Second inlet, 111-Inlet, 121-Gravity outlet, 31-First end, 32-Second end, 33-Third end, 34-Self-priming outlet, 70-Control valve, 71-Return valve, 72-Irrigation valve, 91-Branch pipe, 911-Return water distribution port, 21-Filter material, 22-Support plate, 221-Filter hole, 81-Lifting chain, 82-Connecting pipe, 83-Air pump, 84-Outlet well. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0041] In the description of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0043] Unless otherwise expressly specified and limited, the terms "connection," "installation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] Unless otherwise specified, all terms (including technical and scientific terms) used in the description of this embodiment have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0045] Figure 1 This is a schematic structural diagram of a household filtration device 100 according to an embodiment of the present invention. Figure 1As shown, in a specific embodiment, the household filtration device 100 includes a water collection tank 10, a water filter tank 20, and a return device. The water collection tank 10 includes multiple compartments arranged in sequence, with adjacent compartments connected. The two outermost compartments are the first compartment 11 and the second compartment 12, respectively. The first compartment 11 has an inlet 111 for conveying domestic sewage, and the second compartment 12 has a gravity outlet 121. The water filter tank 20 is installed above the water collection tank 10 and has a support plate 22 at the bottom. The support plate 22 has multiple filter holes 221, and filter material 21 is placed inside the water filter tank 20. The reflux device includes a drive pump 80 and a reflux pipe 30. The reflux pipe 30 has a first end 31 and a second end 32. The first end 31 is connected to the second compartment 12, and the second end 32 is located inside the filter tank 20. The drive pump 80 controls the flow of liquid from the second compartment 12 through the reflux pipe 30 into the filter tank 20, and then returns to the collection tank 10 through the filter holes 221, thus forming a circulation loop. The liquid in the second compartment 12 is discharged from the gravity outlet 121 when it reaches the height of the gravity outlet 121. Here, the filter material 21 is gravel. In other embodiments, the filter material 21 can also be other materials.

[0046] This embodiment forms a filtration loop to circulate and filter domestic sewage. When the liquid in the second compartment 12 reaches the height of the gravity outlet 121, it is discharged from the gravity outlet 121. After multiple filtrations, the domestic sewage is discharged into the natural environment, thus avoiding environmental pollution.

[0047] In some embodiments, the size of the gravel ranges from 10mm to 30mm. The gravel is evenly laid in the water filter tank 20, and the gravel layer is 40mm to 50mm thick. The size of the filter holes 221 on the support plate 22 is smaller than the size of the gravel to prevent the gravel from falling into the water collection tank 10.

[0048] For farmers who already have septic tanks installed in their homes, this embodiment connects the septic tank outlet to the inlet 111 of the household filtration device 100. For farmers who do not have septic tanks installed, they need to install a septic tank first, and then connect the septic tank outlet to the inlet 111 of the household filtration device 100.

[0049] In some embodiments, the household filtration device 100 further includes a plurality of water inlet pipes 60, each water inlet pipe 60 being installed between two adjacent compartments and having a first inlet 61 and a second inlet 62. The first inlet 61 is located in the upstream compartment, and the second inlet 62 is located in the downstream compartment. Wastewater in the upstream compartment enters the downstream compartment through the first inlet 61 and the second inlet 62 of the water inlet pipe 60 on the right side.

[0050] In some embodiments, the first port 61 of each water pipe 60 is located in the middle section of the corresponding compartment, and the height of the second port 62 is lower than the height of the first port 61.

[0051] In this embodiment, heavier substances in wastewater generally settle at the bottom of the cell and lighter substances float at the top. Therefore, the wastewater in the middle of the cell is relatively clear. So, by setting the first pipe opening 61 in the middle of the cell, the clearer wastewater can enter the downstream cell, thereby filtering the wastewater.

[0052] In some embodiments, the number of compartments is three, with the middle compartment being the third compartment 13. See [reference needed]. Figure 1 The three compartments, from left to right, are compartment 11, compartment 13, and compartment 12, through which wastewater flows. Adjacent compartments are separated by internal partitions. In other embodiments, the number of compartments can be determined according to specific design requirements.

[0053] Figure 2 This is a schematic side view of a water distribution pipe 90 according to an embodiment of the present invention. Figure 3 This is a schematic top view of a water distribution pipe 90 according to an embodiment of the present invention. Figure 2 and Figure 3 As shown, in some embodiments, the reflux device further includes a water distribution pipe 90, which is connected to the reflux pipe 30 and has multiple branch pipes 91. The multiple branch pipes 91 are evenly arranged on the top of the water filter box 20 and each has at least one reflux water distribution port 911. The multiple reflux water distribution ports 911 are evenly arranged inside the water filter box 20.

[0054] In this embodiment, multiple return water outlets are evenly arranged inside the filter tank 20, allowing the returned wastewater to enter the filter tank 20 uniformly for filtration. Here, both the collection tank 10 and the filter tank 20 are cylindrical, so the shape of the water distribution pipe 90 is also roughly circular, with the return water outlets 911 evenly arranged within the circle. In other embodiments, if the filter tank 20 is configured with a different shape, the shape of the water distribution pipe 90 can be adjusted accordingly to match the shape of the filter tank 20.

[0055] In some embodiments, the return pipe 30 further has a third end 33 for irrigation, and the return device further includes at least one control valve 70 mounted on the return pipe 30, the control valve 70 being configured to controllably cause liquid from the first end 31 to flow to the second end 32 or the third end 33.

[0056] This embodiment improves wastewater utilization by providing a third end 33 on the return pipe 30, which allows treated wastewater to be used for irrigation of vegetable gardens or the ground.

[0057] In some embodiments, a three-way valve is provided on the return pipe 30. The three openings of the three-way valve are respectively connected to the first end 31, the second end 32, and the third end 33. A return valve 71 is provided between the second end 32 and the three-way valve, and an irrigation valve 72 is provided between the third end 33 and the three-way valve. When farmers need to irrigate, they close the return valve 71 and open the irrigation valve 72. When irrigation is not needed, they close the irrigation valve 72 and open the return valve 71, allowing wastewater to enter the filter tank 20.

[0058] In some embodiments, at least a portion of the water collection tank 10 is located underground, and the filter tank 20 is located above ground. The gravity outlet 121 is located below ground. This embodiment can be understood as a semi-buried installation, where the inlet 111 is also located below ground, and the inlet 111 and the gravity outlet 121 are at the same height. In other embodiments, the inlet 111 and the gravity outlet 121 may be located at different heights.

[0059] In some embodiments, the water collection tank 10 and the water filter tank 20 are made of fiberglass or PP material. In other embodiments, the materials of the water collection tank 10 and the water filter tank 20 can be determined according to specific design requirements.

[0060] In some embodiments, the household filtration device 100 further includes an overflow pipe 40, which is installed inside the water filter tank 20 and its bottom is connected to the first compartment 11. When the liquid in the water filter tank 20 reaches a preset height, it flows from the top of the overflow pipe 40 into the first compartment 11, which can prevent excessive liquid overflow from the water filter tank 20. Here, the overflow pipe 40 has a diameter of 100mm, and its top extends approximately 5mm-6mm beyond the water distribution pipe 90, directly connecting to the atmosphere.

[0061] In some embodiments, the household filtration equipment 100 also includes a control cabinet 50, which is located on the outer wall of the water filter tank 20, facilitating farmers to control the operation of the entire equipment. Here, the control cabinet 50 is a wall-mounted control cabinet 50, made of SUS304 stainless steel. Components such as time relays and overcurrent protectors are installed inside the wall-mounted control cabinet 50. The panel of the wall-mounted control cabinet 50 is equipped with manual start and stop buttons, enabling the control of the external circulating irrigation system to start and stop.

[0062] In some embodiments, the second compartment 12 further includes a self-priming outlet 34, with the first end 31 of the return pipe 30 passing through the self-priming outlet 34 and located inside the second compartment 12. The drive pump 80 is a circulation pump and is installed on the return pipe 30. Here, the drive pump 80 is located on the ground. The drive pump 80 draws the supernatant from the second compartment 12, lifts it through the return pipe 30 to the distribution pipe 90, passes through the filter tank 20, and then flows back to the first compartment 11, the second compartment 12, and the third compartment 13. This is the first type of external power supply.

[0063] For the first type of external power supply: The effluent after sludge removal treatment in the household septic tank flows by gravity from the inlet 111 of the household filtration equipment 100 into the first compartment 11 of the collection tank 10. Under the influence of gravity, it flows through the water pipe 60 on the inner partition, from the first compartment 11 to the third compartment 13, and then to the second compartment 12. When the circulating pump is running, it draws the supernatant from the second compartment 12 from the self-priming outlet 34, through the return pipe 30 into the distribution pipe 90, and then evenly distributes the water into the filter tank 20. The filtrate filtered by the filter material 21 in the filter tank 20 enters the collection tank 10. The circulating pump operates intermittently and stops under the control of a time relay. When farmers need to irrigate surrounding vegetable gardens and woodlands, they first turn off the circulating pump and close the return valve 71 in the wall-mounted control cabinet 50, open the irrigation valve 72, and then turn on the circulating pump again. This allows them to draw the supernatant from the second compartment 12 of the collection tank 10 to irrigate the vegetable gardens and woodlands. When the filter material 21 of the filter tank 20 becomes clogged, affecting the seepage of liquid into the filter tank 20, the accumulated liquid above the filter tank 20 flows directly into the first compartment 11 of the collection tank 10 through the overflow pipe 40. When there is a large amount of scum and bottom mud in the first compartment 11 of the collection tank 10, the mud and scum in the first compartment 11 can be cleaned through the overflow pipe 40. When the circulating pump malfunctions, the supernatant in the second compartment 12 of the collection tank 10 can flow to the surrounding area through the gravity outlet 121. When farmers need to leave for a period of time, they can turn off the power to the circulating pump in the wall-mounted control cabinet 50.

[0064] Figure 4 This is a schematic structural diagram of a household filtration device 100 according to another embodiment of the present invention. Figure 5 This is a schematic structural diagram of a household filtration device 100 according to another embodiment of the present utility model. Figure 4 and Figure 5As shown, in another embodiment, the household filtration device 100 further includes an outlet well 84 and a connecting pipe 82. A portion of the outlet well 84 is located underground, and another portion is located above ground. A drive pump 80 is located within the outlet well 84 and is mounted on a return pipe 30. The connecting pipe 82 is installed underground, with one end connected to the second compartment 12 and the other end connected to the outlet well 84. The drive pump 80 is configured to controllably pump wastewater from the second compartment 12 through the connecting pipe 82 into the outlet well 84 and into the return pipe 30. In this embodiment, the drive pump 80 is located at the bottom of the outlet well 84.

[0065] In some embodiments, when the drive pump 80 is a circulation pump, the residential filtration device 100 further includes a lifting chain 81, one end of which is connected to the drive pump 80, and the other end is connected to the top of the outlet well 84. (See also...) Figure 4 When maintenance of the drive pump 80 is required, the farmer can remove the drive pump 80 from the outlet well 84 using the lifting chain 81. The circulation pump draws liquid from the outlet well 84 and lifts it through the return pipe 30 to the distribution pipe 90, then flows by gravity through the filter area to the collection tank 10. This is the second type of external power supply.

[0066] For the second type of external power supply: The effluent after treatment in the septic tank flows by gravity from the inlet 111 of the household filtration equipment 100 into the first compartment 11 of the collection tank 10. Under gravity, it flows through the water pipe 60 on the inner partition from the first compartment 11 to the third compartment 13, and then to the second compartment 12. The liquid in the second compartment 12 flows by gravity through the connecting pipe 82 to the outlet well 84. When the circulation pump in the outlet well 84 is running, it draws the liquid from the outlet well 84 into the distribution pipe 90 through the return pipe 30. The water is then evenly distributed through the distribution pipe 90 into the filter tank 20. The filtrate filtered by the filter material 21 in the filter tank 20 enters the collection tank 10. The circulation pump operates intermittently and stops under the control of a time relay. When farmers need to irrigate surrounding vegetable gardens and woodlands, they first turn off the circulating pump and close the return valve 71 in the wall-mounted control cabinet 50, open the irrigation valve 72, and then turn on the circulating pump again. This will lift the liquid in the outlet well 84 to the third end 33, thus irrigating the vegetable gardens and woodlands. When the filter material 21 of the filter tank 20 becomes clogged, affecting the seepage of liquid into the filter tank 20, the accumulated liquid above the filter tank 20 flows directly into the first compartment 11 of the collection tank 10 through the overflow pipe 40. When there is a large amount of scum and bottom mud in the first compartment 11 of the collection tank 10, the mud and scum in the first compartment 11 can be cleaned through the overflow pipe 40. When the circulating pump malfunctions, it can be lifted out of the outlet well 84 by the lifting chain 81 for cleaning and repair. The supernatant in the second compartment 12 of the collection tank 10 can flow to the surrounding area through the gravity outlet 121. When farmers need to leave for a period of time, they can turn off the power to the circulating pump in the wall-mounted control cabinet 50.

[0067] In some embodiments, when the drive pump 80 is an airlift pump, the household filtration device 100 also includes an air pump 83, which is connected to the airlift pump and located at the top of the outlet well 84. Farmers can control the operation of the airlift pump through the air pump 83. Here, an air pump cover is placed over the air pump 83, which is connected to the airlift pump via an air supply pipe. With continuous air supply from the air pump 83, the pump continuously and reciprocally draws liquid from the outlet well 84, lifts it through the return pipe 30 to the distribution pipe 90, and then flows by gravity through the filter media area to the collection tank 10. This is the third type of external power supply.

[0068] For the third type of external power supply: The effluent after treatment in the septic tank flows by gravity from the inlet 111 of the household filtration equipment 100 into the first compartment 11 of the collection tank 10. Under gravity, it flows through the inlet on the inner partition and from the first compartment 11 to the third compartment 13, and then to the second compartment 12. The liquid in the second compartment 12 flows by gravity through the connecting pipe 82 to the outlet well 84. When the air pump 83 above the outlet well 84 is running, it draws the liquid from the outlet well 84 through the return pipe 30 into the distribution pipe 90. The water is then evenly distributed through the distribution pipe 90 into the filter tank 20. The filtrate filtered by the filter material 21 in the filter tank 20 enters the collection tank 10. The air pump 83 operates intermittently and stops under the control of a time relay in the wall-mounted control cabinet 50. When farmers need to irrigate surrounding vegetable gardens and woodlands, they first turn off the air pump 83 and the return valve 71 in the wall-mounted control cabinet 50, open the irrigation valve 72, and then turn on the air pump 83 again. This will raise the water in the outlet well 84 to the third end 33, thus irrigating the vegetable gardens and woodlands. When the filter material 21 of the filter tank 20 becomes clogged, affecting the seepage of liquid into the filter tank 20, the accumulated liquid above the filter tank 20 flows directly into the first compartment 11 of the collection tank 10 through the overflow pipe 40. When there is a large amount of scum and bottom mud in the first compartment 11 of the collection tank 10, the mud and scum in the first compartment 11 can be cleaned through the overflow pipe 40. When the air pump 83 malfunctions, the air pump 83 cover can be opened to clean and repair the air pump 83. At this time, the supernatant in the second compartment 12 of the collection tank 10 can flow to the surrounding area through the gravity outlet 121. When a farmer is away for a period of time, the power supply to the air pump 83 can be turned off in the wall-mounted control cabinet 50.

[0069] The household filtration device 100 provided in this embodiment can be combined with external power to achieve sewage circulation. It has a simple structure, is semi-buried, occupies a small area, and allows for gravity-fed water inlet and outlet, enabling continuous internal liquid circulation. It can also be used to irrigate farmers' vegetable gardens and woodlands, and is easy to operate. Water-loving vegetables can also be planted above the filter tank 20 of the filter bed. This embodiment is suitable for single-household farming households.

[0070] The household filtration equipment 100 provided in this embodiment is configured with three different wastewater circulation treatment and irrigation methods to meet the needs of scattered farmers for domestic sewage treatment and daily irrigation of vegetable gardens and woodlands. By continuously circulating and filtering the water in the collection tank 10 through an external power source, the overall treatment rate of wastewater in the filter bed is improved, and the effluent is basically free of black and odor. The treated effluent can be used by farmers to irrigate their vegetable gardens and woodlands according to their needs, reducing environmental pollution and making full use of the nitrogen and phosphorus nutrients in the wastewater. During operation, the start and stop of the external power source can be controlled through the built-in wall-mounted control cabinet 50, making operation convenient and easy for farmers to use.

[0071] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A household filtration device, characterized in that, include: A water collection tank includes multiple compartments arranged in sequence, with adjacent compartments connected. The two outermost compartments are the first compartment and the second compartment, respectively. The first compartment is provided with an inlet for conveying domestic sewage, and the second compartment is provided with a gravity outlet. A water filter tank is installed above the water collection tank and has a support plate at the bottom. The support plate has multiple filter holes, and filter material is placed inside the water filter tank. The reflux device includes a drive pump and a reflux pipe. The reflux pipe has a first end and a second end. The first end is connected to the second compartment, and the second end is located inside the filter tank. The drive pump controls the liquid in the second compartment to be transported to the filter tank through the reflux pipe, and then returns to the collection tank through the filter holes, thereby forming a circulation loop. When the liquid in the second compartment reaches the height of the gravity outlet, it is discharged from the gravity outlet.

2. The household filtration device according to claim 1, characterized in that, Also includes: Multiple water pipes are installed between two adjacent cell compartments, and each water pipe has a first pipe opening and a second pipe opening, wherein the first pipe opening is located in the upstream cell compartment and the second pipe opening is located in the downstream cell compartment.

3. The household filtration device according to claim 2, characterized in that, The first opening of each of the water pipes is located in the middle section of the corresponding compartment, and the height of the second opening is lower than the height of the first opening.

4. The household filtration device according to any one of claims 1-3, characterized in that, The reflux device further includes: The water distribution pipe is connected to the return pipe and has multiple branch pipes. The multiple branch pipes are evenly arranged on the top of the water filter box and each has at least one return water distribution port. The multiple return water distribution ports are evenly arranged inside the water filter box.

5. The household filtration device according to any one of claims 1-3, characterized in that, The return pipe also has a third end for irrigation, and the return device further includes: At least one control valve is installed on the return pipe, the control valve being configured to controllably direct the liquid from the first end to the second end or the third end.

6. The household filtration device according to any one of claims 1-3, characterized in that, At least a portion of the water collection tank is located underground, and the water filter tank is located above ground. The gravity-flow outlet is located below ground level.

7. The household filtration device according to any one of claims 1-3, characterized in that, Also includes: An overflow pipe is installed inside the water filter tank and its bottom is connected to the first compartment. When the liquid in the water filter tank reaches a preset height, it flows from the top of the overflow pipe into the first compartment.

8. The household filtration device according to any one of claims 1-3, characterized in that, The second compartment also includes a self-priming outlet, the first end of the return pipe passes through the self-priming outlet and is located inside the second compartment, and the drive pump is a circulation pump and is installed on the return pipe.

9. The household filtration device according to any one of claims 1-3, characterized in that, Also includes: The water outlet well is partially located underground and partially located above ground. The drive pump is located inside the water outlet well and is installed on the return pipe. A connecting pipe is installed underground, with one end connected to the second compartment and the other end connected to the outlet well; The drive pump is configured to controllably pump the wastewater in the second compartment through the connecting pipe into the outlet well and then into the return pipe.

10. The household filtration device according to claim 9, characterized in that, When the driving pump is a circulating pump, the household filtration device also includes a lifting chain, one end of which is connected to the driving pump and the other end is connected to the top of the outlet well. When the driving pump is an air lift pump, the household filtration device also includes an air pump connected to the air lift pump and located at the top of the outlet well.

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