Automatic turnover water organic matter purification device

The automatic water purification device, which combines horizontal rotation and vertical flipping, utilizes a combination of photocatalysts and photothermal catalysts to solve the problem of organic matter purification in ponds, achieving automated and effective water quality improvement.

CN118908336BActive Publication Date: 2026-02-10CHANGZHOU INST OF MECHATRONIC TECH
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Patent Information

Application Number
CN202410990229.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-07-23
Publication Date
2026-02-10
Estimated Expiration
2044-07-23

AI Technical Summary

Technical Problem

Existing technologies are insufficient to efficiently purify organic matter in ponds, leading to water quality deterioration, algae proliferation, and the accumulation of harmful substances, which affect the growth of fish, shrimp, and crabs and the aquatic ecological environment.

Method used

An automatic water purification device that uses horizontal rotation and vertical tilting forms a thin liquid layer on the surface of a float using photocatalysts and photothermal catalysts. Through photothermal reaction and catalytic degradation of organic matter, combined with the adsorption and concentration of organic matter by the fiber layer, automatic purification is achieved.

Benefits of technology

It achieves automatic purification of organic matter in water, improves oxidation capacity, reduces the generation of harmful substances, improves water quality, prevents algae growth and the proliferation of pathogenic microorganisms, and enhances water transparency and dissolved oxygen levels.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application is an automatic turnover water organic matter purification device, which comprises a first connecting rod, two first floating balls arranged at the two ends of the first connecting rod, a second connecting rod, two second floating balls arranged at the two ends of the second connecting rod, a fiber layer wound on the surface of the two first floating balls and the two second floating balls, and photocatalysts and photo-thermal catalysts loaded on the surface of the fiber layer; a flexible diaphragm is arranged in the first floating ball, and the flexible diaphragm divides the inner cavity of the first floating ball into a first cavity and a second cavity; the first cavity is located on one side above the second cavity; a flexible diaphragm is arranged in the second floating ball, and the flexible diaphragm divides the inner cavity of the second floating ball into a third cavity and a fourth cavity; the third cavity is located on one side above the fourth cavity; the second cavity and the fourth cavity are filled with air, and the first cavity and the third cavity are filled with liquid and air; the device is horizontally rotated or vertically turned over by means of light energy, and the water organic matter impurities are purified.
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Description

Technical Field

[0001] This invention relates to purification devices, and more particularly to an automatic water-returning purification device for organic matter. Background Technology

[0002] Uneaten feed, fish, shrimp and crab excrement, animal and plant carcasses, drug residues and organic debris in pond aquaculture will lead to a large amount of organic matter remaining in the aquaculture pond. A large amount of organic matter will accumulate at the bottom of the pond. This organic matter often causes great harm to the aquatic ecological environment in which fish, shrimp and crab live. In severe cases, it will affect the normal growth of the aquaculture species. With the continuous development of aquaculture, the stocking density is constantly increasing, and the conditions of the pond are constantly deteriorating. In addition, the protein content of feed is getting higher and higher, which leads to excessive deposition of organic matter such as uneaten feed and feces at the bottom of the pond. A large amount of organic matter has great harm to fish ponds: (1) oxygen consumption and the production of harmful substances. The degradation of organic matter consumes a large amount of oxygen. If the dissolved oxygen in the water is insufficient, it will create an anaerobic environment, resulting in the decomposition of reducing toxins. The accumulation of matter produces harmful substances such as CO, H2S, and NH3, which deteriorates water quality, affects the growth of fish and shrimp, and even causes a large number of deaths. Excessive organic matter content in the water can cause pathogenic microorganisms to multiply in large numbers. If the farmed organisms are injured and their functions decline, these pathogenic microorganisms will take advantage of the weakness and cause an outbreak of epidemics. (2) It affects photosynthesis. When there is a large amount of particulate and dissolved organic matter in the water, it will seriously affect solar radiation, weaken the photosynthesis of algae, and make the water turbid and less transparent. This will cause the reproduction of pathogenic bacteria at the bottom of the pond to accelerate. At this time, it is easy to get infected and develop diseases. The weakening of photosynthesis will cause a series of problems such as slow growth of crayfish, poor vitality of aquatic plants, deterioration of pond water quality, and crayfish coming ashore due to lack of oxygen. (3) It causes changes in algal populations. After the water body is polluted by organic matter, algae will reproduce abnormally. Blue-green algae that are difficult for fish and shrimp to digest will multiply in large quantities and become the dominant algae. "Algal bloom" will appear on the water surface and emit a foul smell. When these algae die, the protein decomposition will also produce toxic substances such as hydroxylamine and hydrogen sulfide, which will harm farmed animals. (4) Increase the toxicity of the water body. Fish algae and other algae in the water will multiply in large quantities and then die. Because they contain toxins, fish can be poisoned and die after swallowing them. After these algae die, they will also produce a large amount of nitrates and nitrites. These compounds can form a variety of carcinogens after being disinfected with chlorine agents, which are very harmful to fish and even human health.

[0003] The most common method for treating organic matter is aeration. By aerating the aquaculture pond, the dissolved oxygen concentration in the water is increased, which provides oxygen for the fish and oxidizes the organic matter in the water. However, oxygen has a weak oxidizing capacity in water, resulting in low oxygen utilization.

[0004] Photocatalysis can effectively degrade organic pollutants, but it has certain limitations in its application. For example, (1) the water layer on the catalyst surface cannot be too thick, otherwise the water layer will absorb sunlight and affect the catalytic effect; (2) the water needs to flow on the catalyst surface so that the degradation of pollutants can be continuously replaced. Currently, due to these limitations, photocatalytic degradation technology is rarely used for the treatment of organic matter in ponds.

[0005] In summary, how to purify organic impurities in water has become an urgent problem for researchers in this field. Summary of the Invention

[0006] The technical problem to be solved by this invention is: how to purify organic impurities in water;

[0007] To solve the above technical problems, this solution discloses two methods: horizontal rotation and vertical flipping.

[0008] The proposed solution for horizontal rotation is as follows:

[0009] This solution includes: a float box; a first connecting rod, which passes through the float box and is rotatably connected to it, with two first floats symmetrically arranged at its two ends; a second connecting rod, which passes through the float box and is rotatably connected to it, with two second floats symmetrically arranged at its two ends; the first and second connecting rods are arranged perpendicularly to each other; the surfaces of the two first floats and the two second floats are all wound with fiber layers, and the surface of the fiber layers is loaded with photocatalyst and photothermal catalyst; a flexible diaphragm is disposed inside the first float, and the flexible diaphragm divides the inner cavity of the first float into a first cavity and a second cavity; the first cavity is located above the second cavity, and the volume of the second cavity is larger than the volume of the first cavity; a flexible diaphragm is disposed inside the second float, and the flexible diaphragm divides the inner cavity of the second float into a third cavity and a fourth cavity; the third cavity is located above the fourth cavity, and the volume of the fourth cavity is larger than the volume of the third cavity; the second and fourth cavities are filled with air, and the first and third cavities are filled with liquid and air respectively;

[0010] In this design, a first connecting rod and a second connecting rod are rotatably mounted inside the float box, arranged perpendicularly to each other. The first floats at both ends of the first connecting rod are in opposite states: in the float on the left side of the first connecting rod, the first cavity is located above and to the left of the second cavity; in the float on the right side of the first connecting rod, the first cavity is located below and to the right of the second cavity. Similarly, the second floats at both ends of the second connecting rod are in opposite states. The float box is designed with a rectangular structure, which allows the first and second floats to float on the water surface and prevents the first connecting rod from becoming unbalanced and overturning when the first float at one end of the first connecting rod rotates. The connection between the float box and the first and second connecting rods is a rotary seal connection to ensure the airtightness of the float box.

[0011] During operation, the entire device is placed in a pond, floating on the water with both the first and second floats on the surface, i.e., half of each float is submerged and the other half is above water. Under sunlight, the floats above the water surface are heated. Taking the first float as an example, due to the photothermal catalyst, the left float is heated, causing the air inside the second chamber to expand and push the liquid in the first chamber above the flexible diaphragm upwards. Because the flexible diaphragm is tilted to one side, the center of gravity of the liquid in the first chamber shifts to one side, causing the device to become unbalanced and rotate. The left float rotates, and under the action of the first connecting rod, the right float... The rotation of the first float causes the side of the first float on the right, which was originally underwater, to float above the water. Under the sunlight, it undergoes photothermal reactions, catalytic degradation reactions, and evaporation, removing organic matter from the water. The side of the first float on the left, which was underwater, undergoes adsorption. When the air inside the first float on the right is heated again, causing the center of gravity to shift, it will continue to rotate, making the whole process cyclical. That is, when the first float on the left participates in the catalytic reaction, the first float on the right participates in adsorption and is used for the catalytic reaction after the float is flipped. The flipping principle of the second float is the same as that of the first float. Without the action of external force, it relies on light energy to purify organic impurities in the water.

[0012] The solution for vertical flipping is as follows:

[0013] This solution includes: a first connecting rod and a second connecting rod vertically fixed; a first float and a second float, both ellipsoidal structures; one end of the major axis of the first float connected to the end of the first connecting rod; one end of the major axis of the second float connected to the end of the second connecting rod; a fiber layer wound around the surface of both the first floats and both second floats, the fiber layer surface being loaded with a photocatalyst and a photothermal catalyst; a flexible diaphragm disposed inside the first float, the flexible diaphragm dividing the inner cavity of the first float into a first cavity and a second cavity; the first cavity is located above the second cavity, and the volume of the second cavity is larger than the volume of the first cavity; a flexible diaphragm disposed inside the second float, the flexible diaphragm dividing the inner cavity of the second float into a third cavity and a fourth cavity; the third cavity is located above the fourth cavity, and the volume of the fourth cavity is larger than the volume of the third cavity; the second and fourth cavities are filled with air, and the first and third cavities are filled with liquid and air respectively;

[0014] During operation, the entire device is placed in a pond. The first and second connecting rods form a cross shape, with the two second floats on the horizontal plane. One first float is vertically positioned above the water surface, while the other is below. Under sunlight, the first float above the water surface is heated by the photothermal catalyst, causing the internal air to expand and push the liquid above the flexible diaphragm upwards. Since the flexible diaphragm is biased to one side, the center of gravity of the liquid above shifts to one side (i.e., the second chamber becomes larger and the first chamber becomes smaller), causing the device to become unbalanced. Simultaneously, the first float below the water surface is also subjected to buoyancy, generating a force in the same direction. The moment of impact causes the entire device to rotate, allowing the two second floats lying horizontally on the water surface to provide balance and support. One second float rotates above the water surface, while the other rotates below. The second float above the water surface undergoes photothermal reactions, catalytic degradation reactions, and evaporation under sunlight, removing organic matter from the water. The two second floats lying horizontally on the water surface also undergo catalytic reactions, degrading dissolved organic matter in the water under the action of a catalyst. The side of the second float below the water surface undergoes adsorption. When the air inside the first float above the water surface is heated again, causing the center of gravity to shift, the device will continue to rotate, thus cyclicaling the entire process.

[0015] In the vertically inverted, horizontally rotating scheme, the fiber layer adsorbs water and concentrates the organic matter in the water, forming a thin liquid layer on the surface of the device. Then, the photothermal catalyst supported on the fiber layer heats the pollutants, causing some of the adsorbed organic matter to volatilize and separate from the water. By co-loading photocatalysts and photothermal catalysts, the heat generated by the photothermal catalyst allows the photocatalyst to activate the reactants using thermionic electrons during pollutant degradation, reducing the activation energy barrier and enabling rapid degradation of organic matter.

[0016] To illustrate the specific material used for the photocatalyst in the vertical flipping and horizontal rotation schemes, the photocatalyst used in this invention is a Prussian blue analogue grown with one or more transition metals selected from iron, copper, cobalt, and manganese.

[0017] To illustrate the specific material used for the photothermal catalyst in the vertical flipping and horizontal rotation schemes, the present invention uses one or more of black indium oxide, zinc oxide, cobalt oxide, and manganese oxide as the photothermal catalyst.

[0018] To illustrate the material of the fiber layer in the vertical flipping and horizontal rotation schemes, the present invention uses one or more of the following fiber materials: cotton thread, activated carbon fiber, and polymer fiber material.

[0019] To illustrate the surface material of the first and second floats, this invention uses a rough titanium material for the surfaces of the first and second floats.

[0020] The beneficial effects of this invention: This invention is an automatic water purification device that flips water to remove organic matter. This solution has the following effects:

[0021] 1. This device, when submerged in water and exposed to sunlight, can automatically process organic matter.

[0022] 2. This device can form a thin liquid layer on its surface by using its vertical flipping or horizontal rotation effect, and can be directly exposed to sunlight. After a period of exposure, it can automatically rotate to renew the surface liquid.

[0023] 3. The float in this device is designed to create a gradually varying liquid layer thickness on the surface of the float, allowing the catalyst to operate at different liquid layer thicknesses and fully exert its catalytic efficiency.

[0024] 4. The fibers wrapped around the surface of the float in this device can concentrate the organic matter in the water. Then, the pollutants are heated by the photothermal catalyst loaded on the float, causing some of the adsorbed organic matter to volatilize and separate from the water.

[0025] 5. The mixed loading of photocatalyst and photothermal catalyst can utilize the heat generated by the photothermal catalyst to activate the reactants and reduce the activation energy barrier during the degradation of pollutants, thereby enabling the organic matter to be rapidly degraded. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0028] Figure 2 This is a schematic diagram of the two first floats after flipping in Embodiment 1 of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0030] Figure 4 This is a schematic diagram of the two first floats after flipping in Embodiment 2 of the present invention;

[0031] In the diagram: 1-Float box, 11-First connecting rod, 12-Second connecting rod, 21-First float, 22-Second float, 3-Fiber layer, 4-Flexible diaphragm, 51-First cavity, 52-Second cavity, 53-Third cavity, 54-Fourth cavity, 6-Liquid. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0033] Example 1

[0034] like Figure 1-2 As shown, this invention is an automatic water purification device for reversing organic matter, comprising: a float box 1; a first connecting rod 11 passing through the float box 1 and rotatably connected to it, with two first floats 21 respectively fixedly fixed at both ends; a second connecting rod 12 passing through the float box 1 and rotatably connected to it, with two second floats 22 respectively fixedly fixedly at both ends; the first connecting rod 11 and the second connecting rod 12 are arranged perpendicularly to each other; the surfaces of the two first floats 21 and the two second floats 22 are all wound with a fiber layer 3, and the surface of the fiber layer 3 is loaded with a photocatalyst and a photothermal catalyst; a first float 12 is provided with... A flexible diaphragm 4 divides the inner cavity of the first float 12 into a first cavity 51 and a second cavity 52. ​​The first cavity 51 is located above the second cavity 52, and the volume of the second cavity 52 is larger than the volume of the first cavity 51. A flexible diaphragm 4 is disposed inside the second float 22, dividing the inner cavity of the second float 22 into a third cavity 53 and a fourth cavity 54. The third cavity 53 is located above the fourth cavity 54, and the volume of the fourth cavity 54 is larger than the volume of the third cavity 53. The second cavity 52 and the fourth cavity 54 are filled with air, while the first cavity 51 and the third cavity 53 are filled with liquid 6 and air.

[0035] In this design, the float box 1 is rotatably equipped with a first connecting rod 11 and a second connecting rod 12 arranged perpendicularly to each other. The first floats 21 at both ends of the first connecting rod 11 are in opposite states, that is, in the float on the left side of the first connecting rod 11, the first cavity 51 is located above the second cavity 52 on the left, and in the float on the right side of the first connecting rod 11, the first cavity 51 is located below the second cavity 52 on the right. Similarly, the second floats 22 at both ends of the second connecting rod 12 are in opposite states. The float box 1 is designed with a rectangular structure, which allows the first floats 21 and the second floats 22 to float on the water surface, and also avoids the first connecting rod 11 from becoming unbalanced and overturning when the first float 21 at one end of the first connecting rod 11 rotates. The connection between the float box 1 and the first connecting rod 11 and the second connecting rod 12 is a rotary seal connection to ensure the airtightness of the float box 1.

[0036] like Figure 1-2As shown, during operation, the entire device is placed in a pond and floats on the water. Both the first float 21 and the second float 22 float on the surface, with half of each float submerged and the other half above water. Under sunlight, the first float 21 and the second float 22 above the water surface are heated. Taking the first float 21 as an example, due to the photothermal catalyst, the left float 21 is heated, causing the air inside the second chamber 52 to expand and push the liquid 6 in the first chamber 51 above the flexible diaphragm 4 upwards. Because the flexible diaphragm 4 is tilted to one side, the center of gravity of the liquid 6 in the first chamber 51 shifts to one side, causing the device to become unbalanced and rotate. The left float 21 rotates, and the first connecting rod 1... Driven by 1, the first float 21 on the right side rotates, causing the side of the first float 21 that was originally underwater to float on the surface of the water. Under the sunlight, it undergoes photothermal reaction, catalytic degradation reaction, and evaporation to remove organic matter from the water. The side of the first float 21 on the left side undergoes adsorption. When the air inside the first float 21 on the right side is heated again, causing the center of gravity to shift, it will continue to rotate, making the whole process cyclical. That is, when the first float 21 on the left side participates in the catalytic reaction, the first float 21 on the right side participates in adsorption and is used for the catalytic reaction after the flip. The flipping principle of the second float 22 is the same as that of the first float 21. Without the action of external force, it relies on light energy to purify organic impurities in the water.

[0037] Example 2

[0038] like Figure 3-4 As shown, this invention is an automatic water purification device for organic matter, comprising: a first connecting rod 11 and a second connecting rod 12 vertically fixed; a first float 21 and a second float 22, both elliptical structures; one end of the major axis of the first float 21 connected to the end of the first connecting rod 11; one end of the major axis of the second float 22 connected to the end of the second connecting rod 12; a fiber layer 3 is wound around the surface of both first floats 21 and both second floats 22, the surface of which is loaded with a photocatalyst and a photothermal catalyst; a flexible diaphragm 4 is disposed inside the first float 12, the flexible diaphragm 4 connecting the first float 11 to the second float 22. The inner cavity of a float 12 is divided into a first cavity 51 and a second cavity 52; the first cavity 51 is located above the second cavity 52, and the volume of the second cavity 52 is larger than the volume of the first cavity 51; a flexible diaphragm 4 is provided inside the second float 22, and the flexible diaphragm 4 divides the inner cavity of the second float 22 into a third cavity 53 and a fourth cavity 54; the third cavity 53 is located above the fourth cavity 54, and the volume of the fourth cavity 54 is larger than the volume of the third cavity 53; the second cavity 52 and the fourth cavity 54 are filled with air, and the first cavity 51 and the third cavity 53 are filled with liquid 6 and air;

[0039] During operation, the entire device is placed in a pond. The first connecting rod 11 and the second connecting rod 12 form a cross-shaped structure, with the two second floats 22 at the horizontal liquid surface. One first float 21 is vertically positioned above the water surface, while the other first float 21 is below the water surface. Under sunlight, the first float 21 above the water surface is heated by the sunlight and the photothermal catalyst, causing the internal air to expand and push the liquid above the flexible diaphragm 4 upward. Since the flexible diaphragm 4 is biased to one side, the center of gravity of the liquid above shifts to one side (i.e., the second cavity 52 becomes larger, and the first cavity 51 becomes smaller), causing the device to become unbalanced. At the same time, the first float 21 below the water surface is also subjected to buoyancy and experiences a torque in the same direction, causing the entire device to become unbalanced. The system rotates, causing the two second floats 22 lying horizontally on the water surface to provide balance and support. One second float 22 rotates above the water surface, while the other rotates below. The second float 22 above the water surface undergoes photothermal reactions, catalytic degradation reactions, and evaporation under sunlight, removing organic matter from the water. The two second floats 22 lying horizontally on the water surface also undergo catalytic reactions, degrading dissolved organic matter in the water. The side of the second float 22 below the water surface undergoes adsorption. When the air inside the first float 21 above the water surface is heated, causing the center of gravity to shift, the system continues to rotate, cyclically completing the process. The first float 21 below the water surface also plays a role in stabilizing the center of gravity.

[0040] Furthermore, in Embodiment 2, a connecting rod is inserted through the center of the cross-shaped structure formed by the first connecting rod 11 and the second connecting rod 12 to connect multiple devices in series, thereby achieving synchronous flipping of multiple devices.

[0041] In Examples 1 and 2, the function of the fiber layer 3 is to adsorb water and concentrate the organic matter in the water, forming a thin liquid layer on the surface of the device. Then, the pollutants are heated by the photothermal catalyst loaded on it, causing some of the adsorbed organic matter to volatilize and separate from the water.

[0042] By co-loading photocatalysts and photothermal catalysts, the heat generated by the photothermal catalyst can enable the photocatalyst to activate the reactants and reduce the activation energy barrier during the degradation of pollutants, thus allowing organic matter to be rapidly degraded.

[0043] In Examples 1 and 2, to illustrate the specific material used in the photocatalyst, the photocatalyst used in this invention is a Prussian blue analogue grown with one or more transition metals selected from iron, copper, cobalt, and manganese.

[0044] In Examples 1 and 2, to illustrate the specific material used in the photothermal catalyst, the present invention uses one or more of black indium oxide, zinc oxide, cobalt oxide, and manganese oxide as the photothermal catalyst.

[0045] In Examples 1 and 2, in order to illustrate the material of the fiber layer 3, the present invention uses one or more of the following materials: cotton thread, activated carbon fiber, and polymer fiber material.

[0046] In Examples 1 and 2, to illustrate the surface material of the first float and the second float, the present invention uses a rough titanium material for the surface of the first float 21 and the second float 22.

[0047] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An automatic water-returning organic matter purification device, characterized in that, include: A first connecting rod (11) and a second connecting rod (12) are vertically arranged; a first float (21) is provided at both ends of the first connecting rod (11), and the two first floats (21) are arranged symmetrically; and a second float (22) is provided at both ends of the second connecting rod (12), and the two second floats (22) are arranged symmetrically; wherein, the surfaces of the two first floats (21) and the two second floats (22) are all wrapped with a fiber layer (3), and the surface of the fiber layer (3) is loaded with a photocatalyst and a photothermal catalyst; a flexible diaphragm (4) is provided inside the first float (21), and the flexible diaphragm (4) holds the inner surface of the first float (21) closed. The cavity is divided into a first cavity (51) and a second cavity (52); the first cavity (51) is located above the second cavity (52), and the volume of the second cavity (52) is larger than the volume of the first cavity (51); a flexible diaphragm (4) is provided inside the second float (22), and the flexible diaphragm (4) divides the inner cavity of the second float (22) into a third cavity (53) and a fourth cavity (54); the third cavity (53) is located above the fourth cavity (54), and the volume of the fourth cavity (54) is larger than the volume of the third cavity (53); the second cavity (52) and the fourth cavity (54) are filled with air, and the first cavity (51) and the third cavity (53) are filled with liquid (6) and air; The photocatalyst is a Prussian blue analogue grown with one or more transition metals selected from iron, copper, cobalt, and manganese. The surfaces of the first float (21) and the second float (22) are made of rough titanium material.

2. The automatic water-returning organic matter purification device according to claim 1, characterized in that, The first connecting rod (11) and the second connecting rod (12) are vertically fixed; the first float (21) and the second float (22) are both elliptical structures; one end of the major axis of the first float (21) is connected to the end of the first connecting rod (11); one end of the major axis of the second float (22) is connected to the end of the second connecting rod (12).

3. The automatic water-reversing organic matter purification device according to claim 1, characterized in that... It also includes: a float box (1); a first connecting rod (11) passing through the float box (1) and rotatably connected to the float box (1), with two first floats (21) arranged symmetrically at both ends; and a second connecting rod (12) passing through the float box (1) and rotatably connected to the float box (1), with two second floats (22) arranged symmetrically at both ends; the first connecting rod (11) and the second connecting rod (12) are arranged perpendicularly to each other; the second floats (22) and the first floats (21) are spherical structures.

4. The automatic water-returning organic matter purification device according to claim 1, characterized in that, The fiber layer (3) is one or more of cotton thread, activated carbon fiber, and polymer fiber materials.

Citation Information

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