An oxygen-filled ecological medium box for improving river water quality

Abstract

The invention relates to an oxygenable ecological medium box for improving river water quality, comprising a box body, a floating component fixed at an opening on the top of the box body and capable of adjusting a fixed height up and down, a bottom layer medium arranged on the bottom surface of the box body for simulating a riverbed environment, a plurality of freshwater clams cultured in the bottom layer medium, a middle layer medium laid on the surface of the bottom layer medium for simulating a particle environment of freshwater clams filtering food, and a surface layer medium arranged on the top of the middle layer medium, the water-facing surface, the water-receiving surface and the bottom surface of the box body are all provided with water holes, the floating component comprises a U-shaped floating box, a floating frame fixed on the inner side of the U-shaped floating box, a partition vertically fixed inside the U-shaped floating box and located above the water-facing surface of the box body, and a non-powered oxygenation mechanism arranged inside the U-shaped floating box; the invention can significantly prolong the survival time of freshwater clams, and can also effectively improve the environment and conditions required for the survival of freshwater clams to greatly reduce the mortality rate of freshwater clams.

Description

Technical Field

[0001] The invention relates to the technical field of water purification, in particular to an oxygen-filled ecological medium box for improving river water quality. Background Art

[0002] In recent years, the ecological environment of rivers, lakes and other water bodies has been severely damaged, point source and non-point source pollution is serious, the water environment quality of some rivers has shown inferior Class V water body, and black and smelly water bodies have formed. In response to the problem of river pollution, a variety of ecological technologies have been developed to eliminate black and smelly water bodies, such as artificial wetlands, ecological floating islands, ecological slope protection, and ecological permeable dams.

[0003] Freshwater clams live in the mud at the bottom of freshwater areas and are typical filter-feeding animals. They can filter out algae, plankton, and organic matter in the water through their own water intake and outflow processes to achieve the purpose of eating. The method of using freshwater clams to purify water quality and improve water transparency has been experimentally proven and unanimously recognized.

[0004] However, when using freshwater clams to purify water, the traditional method is to put the freshwater clams directly into a net bag and hang it on the shore with a rope so that the freshwater clams are immersed in the water. Although the freshwater clams can purify water during their survival, there are still the following shortcomings: First, since this method allows the freshwater clams to break away from their original way of survival in mud and sand, and the freshwater clams squeeze each other, their living space is limited, resulting in a shorter survival time of the freshwater clams; secondly, the polluted water itself has a very low oxygen content, and the survival of freshwater clams is inseparable from oxygen, which leads to a relatively poor living environment for freshwater clams; thirdly, since the height of the net bag is fixed and cannot be adjusted up and down with the water level, once the water level drops to below the net bag, the freshwater clams will face dehydration and death. Therefore, the above three aspects make the survival rate of freshwater clams generally very low. Moreover, if the dead freshwater clams are not removed in time, the rotting of the corpses will cause secondary pollution of the water body and emit a foul odor, which will ultimately be counterproductive to the "original intention of purifying water quality". Therefore, the water quality improvement effect is poor and urgently needs to be resolved. Summary of the invention

[0005] In view of the current status of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a method for uniformly cultivating freshwater clams in a bottom medium inside a box, thereby better simulating a breeding environment suitable for the life of freshwater clams and reserving sufficient living space for freshwater clams, and being able to continuously inject external air into the interior of the box with the help of a non-powered oxygenation mechanism to provide a sufficient source of oxygen for the freshwater clams, thereby effectively improving the environment and conditions required for the survival of freshwater clams, thereby greatly reducing the mortality rate of freshwater clams and significantly prolonging the survival time of freshwater clams to effectively improve the improvement effect of water quality by using freshwater clams, and at the same time, with the help of a floating component, the freshwater clams can always sink in the water to completely avoid the death of freshwater clams due to dehydration, thereby providing an oxygenable ecological medium box for improving river water quality.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: an oxygenated ecological medium box for improving river water quality, characterized in that it includes a box body, a floating component fixed at the top opening of the box body and capable of adjusting a fixed height up and down, a bottom layer medium arranged on the bottom surface of the box body to simulate the riverbed environment, a plurality of freshwater clams uniformly cultured in the bottom layer medium, a middle layer medium laid on the surface of the bottom layer medium to simulate the particle environment of freshwater clams filtering food, and a surface layer medium arranged on the top of the middle layer medium;

[0007] The water-facing surface, the water-receiving surface and the bottom surface of the box body are all provided with water-passing holes, and two surfaces of the box body connected end to end with the water-facing surface and the water-receiving surface are also provided with a grid net, and a filter net for covering each water-passing hole is also fixed on the inner wall of the water-facing surface, the water-receiving surface and the bottom surface of the box body;

[0008] The floating assembly includes a U-shaped floating box, a floating frame fixed inside the U-shaped floating box, a baffle fixed vertically inside the U-shaped floating box and located above the water-facing surface of the box body, and a non-powered oxygenation mechanism arranged inside the U-shaped floating box, and the floating frame is sleeved outside the top opening of the box body;

[0009] The partition divides the interior of the U-shaped floating box into a rectangular inner cavity and an L-shaped inner cavity. The bottom of the U-shaped floating box is located on an outer wall on one side above the water-facing surface of the box body, and an arc-shaped cabin is formed toward the interior of the rectangular inner cavity. The unpowered oxygenation mechanism includes a power unit arranged in the arc-shaped cabin and an oxygenation unit arranged in the L-shaped inner cavity and cooperating with the power unit.

[0010] The power unit comprises a power shaft which is laterally and rotatably inserted and connected between the inner walls on both sides of the arc-shaped cabin which are close to and opposite to the vertical shore, and a plurality of water wheels which are concentrically sleeved and fixed on the power shaft and are sequentially distributed along the axial direction of the power shaft. One end of the power shaft which is close to the partition is sealed and rotatably passes through the partition and extends into the interior of the L-shaped inner cavity. The number of blades of the water wheel is at least 5, and each of the water wheels has at least two blade ends extending below the opening of the arc-shaped cabin.

[0011] The oxygenation unit includes a transmission shaft which is laterally and rotatably connected to the inside of one end of the L-shaped inner cavity close to the rectangular inner cavity and perpendicular to the power shaft, two bevel gears which are respectively and concentrically fixed on the proximal ends of the power shaft and the transmission shaft and mesh with each other, a manual air pump which is fixed to the inside of one end of the L-shaped inner cavity away from the rectangular inner cavity, and a reversing unit arranged between the telescopic end of the manual air pump and the transmission shaft, wherein the telescopic end of the manual air pump is arranged in the direction of the reversing unit and is perpendicular to the transmission shaft;

[0012] The reversing unit includes a sleeve, a disc which is concentrically and rotatably arranged in the sleeve, and a connecting rod which is laterally fixed on the outer circumference of the sleeve on the side facing the manual air pump. The end of the transmission shaft which faces the back water surface of the box body is eccentrically fixed on the disc, and the end of the connecting rod is rotatably connected to the telescopic end of the manual air pump.

[0013] The oxygenation unit further comprises an air outlet plate and an oxygenation pipe, wherein the air outlet plate is arranged in the bottom medium, one end of the oxygenation pipe is sealedly connected to the air inlet of the air outlet plate, and the other end of the oxygenation pipe is sealedly connected to the air outlet of the manual air pump;

[0014] A wire mesh cover located below each water wheel is also fixed at the opening of the arc-shaped cabin to prevent aquatic plants or garbage from entangled with the water wheel.

[0015] Preferably, the middle layer medium includes a mixture of organic and inorganic matter, and the surface layer medium includes submerged aquatic plants arranged on the surface of the middle layer medium; the mesh of the filter is smaller than the bottom layer medium, the middle layer medium and the surface layer medium to prevent the bottom layer medium, the middle layer medium and the surface layer medium from leaking out of the box through the mesh of the filter.

[0016] Preferably, the bottom layer medium includes a gravel layer, a mixed layer of river sand and gravel, and a river sand layer arranged in sequence from bottom to top, the gravel layer is laid on the inner bottom surface of the box, the freshwater clams are buried in the river sand layer, and the arrangement density of the freshwater clams is: 10 to 20 / m 2 , the gas outlet plate is arranged in the gravel layer or the mixed layer.

[0017] Preferably, a plant net sunk inside the box body is further provided on the inner side of the floating frame, phytoplankton is further provided in the plant net, and the lowest point of the plant net is 15 to 25 cm away from the bottom of the floating frame.

[0018] Preferably, a transversely arranged L-shaped cover plate is also fixed in the L-shaped inner cavity, and the outer wall of the L-shaped cover plate is sealed and fixed on the inner wall of the L-shaped inner cavity. The L-shaped cover plate divides the interior of the L-shaped inner cavity into two L-shaped separation chambers arranged upper and lower. The oxygenation unit is arranged in the lower L-shaped separation chamber, and the interior of the upper L-shaped separation chamber and the interior of the rectangular inner cavity are also provided with planting matrix, and aquatic plants are also planted in the planting matrix.

[0019] Preferably, it also includes a telescopic component arranged on the side of the box body facing the vertical shore, and a chain rope arranged on the upper end of the telescopic component, and the telescopic component is hung on the side wall of the vertical shore through the chain rope.

[0020] Preferably, the telescopic assembly includes a hollow tube vertically fixed to one side of the box body, a telescopic rod concentrically and movably inserted into the hollow tube, and at least one limiter arranged between the hollow tube and the telescopic rod to detachably fix the hollow tube and the telescopic rod to each other, and one end of the telescopic rod extending above the hollow tube is fixed to the floating frame.

[0021] Preferably, a plurality of connecting holes are evenly spaced apart on the outer wall of the hollow tube along its axial direction, and correspondingly, a plurality of threaded holes are evenly spaced apart in the telescopic rod along its axial direction, and the center distance between any two adjacent connecting holes is equal to the center distance between any two adjacent threaded holes.

[0022] Preferably, the limiter includes a limit nut and a limit bolt inserted and threaded into the limit nut, the limit nut is fixed on the outer wall of the hollow tube and is arranged concentrically with one of the connecting holes, and the threaded end of the limit bolt passes through a connecting hole concentrically arranged with the limit nut and is inserted into a threaded hole corresponding to the above-mentioned connecting hole and is threaded.

[0023] Preferably, a clamp is fixed on an outer wall of the floating frame on one side close to the telescopic rod, and the floating frame is fixedly connected to the telescopic rod via the clamp.

[0024] Compared with the prior art, the advantages of the present invention are:

[0025] 1. The present invention firstly utilizes a filter to prevent larger debris from entering the box body, and then further filters the water body with the help of a bottom layer medium, a middle layer medium and a surface layer medium arranged in the box body, thereby utilizing physical methods to improve the water quality; and cultivates freshwater clams in a bottom layer medium that can better simulate the original cultivation environment, while reserving sufficient living space for the freshwater clams, thereby providing a basis for the attachment and survival of the freshwater clams to significantly prolong the survival time of the freshwater clams, and at the same time, it can also become a habitat for small aquatic animals, plants and microorganisms, thereby enhancing the ecological diversity of the water body, thus utilizing freshwater clams as well as small aquatic animals, plants and microorganisms and effectively improving the improvement effect of water quality through biological methods.

[0026] 2. The present invention can also continuously inject external air into the interior of the box with the help of an unpowered oxygenation mechanism, thereby greatly increasing the oxygen content of the water in the box, thereby providing a sufficient source of oxygen for freshwater clams, small aquatic animals, plants and microorganisms, thereby effectively improving the environment and conditions required for the survival of freshwater clams, thereby greatly reducing the mortality rate of freshwater clams. In this way, the purification and filtration functions of freshwater clams themselves can be used to improve the water quality of the river for a long time.

[0027] 3. The present invention uses a floating component to ensure that the box body can always be immersed in the water body, and can sink or float with the change of the water surface height. No matter how the water surface height changes, the freshwater clams can always sink in the water, thereby completely avoiding the death of freshwater clams due to dehydration; in addition to improving the water quality to a certain extent, the floating component can also locate the position of the box body, which is convenient for the monitoring and management of the medium box, and through reasonable design, it can also be integrated with the surrounding natural environment and artificial landscape to play a role in beautifying the river bank.

[0028] 4. The present invention can also adjust the vertical distance between the floating assembly and the box body by means of the telescopic assembly, thereby adjusting the position of the box body to a suitable depth in the river, thereby improving the applicability of the medium box.

[0029] 5. The present invention can also restrict phytoplankton inside the box with the help of the plant net, thereby providing an additional food source for freshwater clams, further enhancing the effect of improving water quality, and the setting of the plant net can be used to control the excessive reproduction of phytoplankton and clean it up in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a top view of the structure of the present invention;

[0031] Figure 2 A top view of the floating assembly of the present invention;

[0032] Figure 3 It is a C-section structural diagram of the floating assembly of the present invention;

[0033] Figure 4 It is a cross-sectional structural diagram along the B direction of the present invention;

[0034] Figure 5 It is a top side structural diagram of the reversing unit of the present invention;

[0035] Figure 6 It is a D-direction cross-sectional structural diagram of the present invention;

[0036] Figure 7 It is a partial enlarged structural diagram of the present invention at point A. DETAILED DESCRIPTION

[0037] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. The term "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships, such as A and / or B, which can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0038] In order to keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and well-known components are omitted.

[0039] like Figures 1 to 7 As shown, an oxygenated ecological medium box for improving river water quality includes a box body 1, a floating component 9 fixed at the top opening of the box body 1 and adjustable up and down to a fixed height, a bottom layer medium 3 arranged on the inner bottom surface of the box body 1 for simulating the riverbed environment, a plurality of freshwater clams 6 uniformly cultured in the bottom layer medium 3, a middle layer medium 4 laid on the surface of the bottom layer medium 3 for simulating the particle environment of the freshwater clams 6 filtering food, and a surface layer medium 5 arranged on the top of the middle layer medium 4, the middle layer medium 4 includes a mixture of organic matter and inorganic matter, and the surface layer medium 5 includes submerged aquatic plants arranged on the surface of the middle layer medium 4.

[0040] Organic matter includes leaf mold and peat, and inorganic matter includes expanded clay. The two are mixed to increase the nutrient content of the media box and also play a certain role in water filtration.

[0041] The submerged aquatic plants include any one of Vallisneria and Duckweed, which can not only provide shelter for the freshwater mussels 6, but also improve water quality through photosynthesis. Of course, the submerged aquatic plants can also include Vallisneria and Duckweed at the same time, or even other submerged aquatic plants, such as Foxtail Algae, Water Chestnut Grass, etc., which will not be repeated here.

[0042] The water-facing surface, the water-receiving surface and the bottom surface of the box body 1 are all provided with water holes 11, and the two surfaces connected end to end with the water-facing surface and the water-receiving surface on the box body 1 are also provided with a grid net 12, and the inner walls of the water-facing surface, the water-receiving surface and the bottom surface of the box body 1 are also fixed with a filter screen 2 for covering each water hole 11, and the mesh of the filter screen 2 is smaller than the bottom layer medium 3, the middle layer medium 4 and the surface layer medium 5 to prevent the bottom layer medium 3, the middle layer medium 4 and the surface layer medium 5 from leaking out of the box body 1 through the mesh of the filter screen 2.

[0043] The material of the box body 1 is high-density polyethylene or fiberglass, which is corrosion-resistant and environmentally friendly, and can ensure that it is not easily damaged during long-term underwater use. The box body 1 is a rectangular parallelepiped structure, so that it is convenient to fix it on a vertical shore.

[0044] The floating assembly 9 includes a U-shaped floating box 92, a floating frame 91 fixed to the inside of the U-shaped floating box 92, a partition 99 vertically fixed inside the U-shaped floating box 92 and located above the water-facing surface of the box body 1, and a non-powered oxygenation mechanism 97 arranged inside the U-shaped floating box 92. The floating frame 91 is mounted on the outside of the top opening of the box body 1.

[0045] The partition 99 divides the interior of the U-shaped floating box 92 into a rectangular inner cavity 921 and an L-shaped inner cavity 922. The bottom of the U-shaped floating box 92 is located on the outer wall on one side above the water-facing surface of the box body 1, and an arc-shaped cabin 923 is formed toward the interior of the rectangular inner cavity 921. The unpowered oxygenation mechanism 97 includes a power unit arranged in the arc-shaped cabin 923 and an oxygenation unit arranged in the L-shaped inner cavity 922 and cooperating with the power unit.

[0046] The power unit includes a power shaft 971 which is laterally and rotatably connected between the inner walls on both sides of the arc cabin 923 which are close to and opposite to the vertical shore, and a plurality of water wheels 972 which are concentrically sleeved and fixed on the power shaft 971 and distributed in sequence along the axial direction of the power shaft 971. One end of the power shaft 971 which is close to the partition 99 is sealed and rotatably passes through the partition 99 and extends into the interior of the L-shaped inner cavity 922. The water wheel 972 has at least 5 blades, and each water wheel 972 has at least 2 blade ends extending below the opening of the arc cabin 923.

[0047] The oxygenation unit includes a transmission shaft 973 which is laterally and rotatably connected to the inside of one end of the L-shaped inner cavity 922 close to the rectangular inner cavity 921 and perpendicular to the power shaft 971, two bevel gears 975 which are concentrically fixed on the proximal ends of the power shaft 971 and the transmission shaft 973 and mesh with each other, a manual air pump 974 fixed to the inside of one end of the L-shaped inner cavity 922 away from the rectangular inner cavity 921, and a reversing unit arranged between the telescopic end of the manual air pump 974 and the transmission shaft 973, and the telescopic end of the manual air pump 974 is arranged in the direction of the reversing unit and is perpendicular to the transmission shaft 973.

[0048] The reversing unit includes a sleeve 976, a disc 977 which is concentrically and rotatably arranged in the sleeve 976, and a connecting rod 978 which is laterally fixed on the outer peripheral surface of the sleeve 976 on the side facing the manual air pump 974. The end of the transmission shaft 973 facing the back water surface of the box body 1 is eccentrically fixed on the disc 977, and the end of the connecting rod 978 is rotatably connected to the telescopic end of the manual air pump 974.

[0049] The oxygenation unit also includes an air outlet disk 979 and an oxygenation tube 9710. The air outlet disk 979 is arranged in the bottom medium 3. One end of the oxygenation tube 9710 is sealed and connected to the air inlet of the air outlet disk 979, and the other end of the oxygenation tube 9710 is sealed and connected to the air outlet of the manual air pump 974.

[0050] A wire mesh cover 911 located below each water wheel 972 is also fixed at the opening of the arc-shaped cabin 923 to prevent aquatic plants or garbage from entangled with the water wheel 972.

[0051] An oxygenated ecological medium box for improving river water quality also includes a telescopic component 7 arranged on the box body 1 towards the vertical bank side, and a chain rope 8 arranged on the upper end of the telescopic component 7, and the telescopic component 7 is hung on the side wall of the vertical bank through the chain rope 8.

[0052] Specifically, a hanging bracket is provided on the side wall vertical to the shore, and the chain rope 8 is hung on the hanging bracket through an axle pin or a hook.

[0053] In this embodiment, the upper end of the telescopic component 7 is hung on the side wall of the vertical shore through the chain rope 8. This structure can ensure that the medium box remains stable in the water to prevent water impact or drift. The chain rope 8 has been treated with anti-corrosion, and the chain rope 8 can adjust the height of the medium box in a relatively large range with the change of tides, ensuring that the box body 1 is always at a suitable water depth. The telescopic component 7 can further adjust the height of the box body 1 in the water body in a small range according to the change of tides, further ensuring that the box body 1 is always at a suitable water depth.

[0054] The telescopic assembly 7 includes a hollow tube 71 vertically fixed to one side of the box body 1, a telescopic rod 72 concentrically and movably inserted into the hollow tube 71, and at least one limiter arranged between the hollow tube 71 and the telescopic rod 72 to detachably fix the hollow tube 71 and the telescopic rod 72 to each other. The end of the telescopic rod 72 extending above the hollow tube 71 is fixed on the floating frame 91. By adjusting the relative position of the hollow tube 71 and the telescopic rod 72, the length of the telescopic assembly 7 can be adjusted, and then the position of the medium box in the water can be adjusted according to actual conditions.

[0055] A plurality of connection holes 73 are evenly spaced apart on the outer wall of the hollow tube 71 along its axial direction. Correspondingly, a plurality of threaded holes 74 are evenly spaced apart in the telescopic rod 72 along its axial direction. The center distance between any two adjacent connection holes 73 is equal to the center distance between any two adjacent threaded holes 74.

[0056] The limiter includes a limit nut 76 and a limit bolt 75 inserted and threaded into the limit nut 76. The limit nut 76 is fixed on the outer wall of the hollow tube 71 and is arranged concentrically with one of the connecting holes 73. The threaded end of the limit bolt 75 passes through a connecting hole 73 arranged concentrically with the limit nut 76 and is inserted into a threaded hole 74 threadedly connected to the above-mentioned connecting hole 73.

[0057] In this embodiment, when adjusting the length of the telescopic assembly 7, each limit bolt 75 is first screwed outward in sequence until its threaded end leaves the threaded hole 74, and then the telescopic rod 72 is moved up and down in the hollow tube 71 to a suitable position. When each connecting hole 73 is directly opposite to a nearby threaded hole 74, each limit bolt 75 is screwed inward so that its threaded end is inserted and screwed into a corresponding threaded hole 74. In this way, the telescopic rod 72 is fixed to prevent it from shifting, thereby adjusting the overall length of the telescopic assembly 7, thereby adjusting the position of the medium box in the water body.

[0058] The outer wall of the telescopic rod 72 is evenly spaced with multiple scale lines along its axial direction, and the distance between the multiple scale lines and the threaded hole 74 at its lower end is consistent with the distance between the upper end opening of the hollow tube 71 and the connecting hole 73 near its lower end.

[0059] In this embodiment, when pulling out or retracting the telescopic rod 72, by observing whether the scale line is aligned with the upper end opening of the hollow tube 71, it can be understood whether the connecting hole 73 and the threaded hole 74 are aligned, which is convenient for the user to quickly align the connecting hole 73 with the threaded hole 74 to achieve quick installation.

[0060] Preferably, a clamp 96 is fixed to the outer wall of the floating frame 91 on one side close to the telescopic rod 72 , and the floating frame 91 is fixedly connected to the telescopic rod 72 via the clamp 96 .

[0061] In this embodiment, the floating frame 91 is fixed to the telescopic rod 72 by the clamp 96, that is, no matter how much the telescopic rod 72 extends out of the hollow tube 71, coupled with the cooperation of the chain rope 8, it does not affect the bottom of the floating component 9 being flush with the water surface, that is, it does not affect the floating component 9 floating on the water surface to locate the position of the medium box, so that the floating component 9 can be integrated with the surrounding natural environment and artificial landscape, playing a role in beautifying the river bank.

[0062] In this embodiment, the filter screen 2 is used to further filter larger debris, and can prevent the bottom layer medium 3, the middle layer medium 4 and the surface layer medium 5 from flowing out of the box body 1, thereby ensuring the stability of the breeding foundation of the medium box; the freshwater clams 6 have a natural water filtering function, and the medium box purifies the water body by filtering plankton, tiny suspended matter, etc. through the freshwater clams 6, and purifies the water body through submerged aquatic plants, and on the other hand, it filters the water body through the inorganic matter in the bottom layer medium 3 and the middle layer medium 4, thereby improving the water body of the river from two aspects, greatly improving the improvement effect, and multiple layers of media are arranged in the medium box to simulate the riverbed environment, providing a basis for the attachment and survival of the freshwater clams 6, greatly reducing the mortality rate of the freshwater clams 6, and thereby improving the effect of improving the water quality of the river; the medium box not only provides a living environment for the freshwater clams 6, but also can become a habitat for small aquatic animals, plants and microorganisms, thereby enhancing the ecological diversity of the water area.

[0063] Preferably, the bottom layer medium 3 includes a gravel layer 31, a mixed layer 32 of river sand and gravel, and a river sand layer 33 arranged in sequence from bottom to top. The gravel layer 31 is laid on the inner bottom surface of the box body 1, and the freshwater clams 6 are buried in the river sand layer 33. The arrangement density of the freshwater clams 6 is: 10 to 20 pieces / m2, and the air outlet plate 979 is arranged in the gravel layer 31 or the mixed layer 32.

[0064] Specifically, grids are laid between the gravel layer 31 , the mixed layer 32 and the river sand layer 33 to increase the adhesion of the gravel layer 31 , the mixed layer 32 and the river sand layer 33 in the box body 1 and reduce the risk of being washed out of the box body 1 by water.

[0065] In this embodiment, the arrangement of river sand and gravel can, on the one hand, filter the water to a certain extent, and on the other hand, imitate the riverbed environment to provide a basis for the attachment and survival of freshwater clams 6. The middle layer medium 4 is arranged above the river sand layer 33, on the one hand, to help the freshwater clams 6 filter food, and on the other hand, to increase the nutritional content of the medium box, and also plays a certain role in filtering the water.

[0066] Specifically, a plurality of stones are evenly spaced in the river sand layer 33. On the one hand, they serve as counterweights for the box body 1 to reduce the impact of water flow on the box body 1 and ensure the stability of the box body 1. On the other hand, they are used to space the freshwater clams 6 so that the freshwater clams 6 can be relatively evenly distributed.

[0067] A transversely arranged L-shaped cover plate 98 is also fixed in the L-shaped inner cavity 922, and the outer wall of the L-shaped cover plate 98 is sealed and fixed on the inner wall of the L-shaped inner cavity 922. The L-shaped cover plate 98 divides the interior of the L-shaped inner cavity 922 into two upper and lower L-shaped partition chambers 910. The oxygenation unit is arranged in the lower L-shaped partition chamber 910, and the upper L-shaped partition chamber 910 and the rectangular inner cavity 921 are also provided with planting matrix 93, and aquatic plants are also planted in the planting matrix 93.

[0068] Specifically, aquatic plants include water hyacinth, water chestnut, etc. These plants can further absorb nutrients such as nitrogen and phosphorus in the water, helping to reduce eutrophication of water bodies.

[0069] The water-facing surface and the water-receiving surface of the box body 1 are arranged along the direction of water flow, that is, the water flows into the box body 1 from the water-facing surface of the box body 1 and flows out from the water-receiving surface of the box body 1. The water holes 11 located on the water-facing surface and the water-receiving surface of the box body 1 are all strip water holes 11, and a water retaining plate 13 is formed between any two adjacent strip water holes 11; wherein, the arrangement of the strip water holes 11 and the grid 12 is to expand the water flow rate flowing through the inside of the box body 1 for water circulation and the exchange of nutrients; the arrangement of the water retaining plate 13 is conducive to blocking large debris from entering the inside of the box body 1, and more preferably, the opening area ratio of the water holes 11 located on the water-facing surface and the water-receiving surface of the box body 1 is 35% to 75%, thereby ensuring that the water flow can pass more smoothly.

[0070] The water holes 11 located on the bottom surface of the box body 1 are circular water holes 11, and the spacing between the circular water holes 11 is greater than the diameter of at least three circular water holes 11; wherein, the circular water holes 11 are arranged to allow water at the bottom of the river to penetrate into the box body 1, and the circular water holes 11 are spaced far apart, which can provide support for the internal structure of the box body 1, thereby ensuring the strength of the box body 1 while ensuring water inlet.

[0071] The inner side of the floating frame 91 is also provided with a plant net 94 sunk inside the box body 1 . The plant net is a conventional net body. Phytoplankton 95 is also arranged inside the plant net 94 . The lowest point of the plant net 94 is 20 cm away from the bottom of the floating frame 91 .

[0072] In this embodiment, the phytoplankton 95 can provide an additional food source for the freshwater clams 6, and also help to improve the water quality, and the setting of the plant net 94 can be used to control the timely cleaning of the phytoplankton 95 when it over-reproduces; the setting of the floating component 9 can not only improve the water quality to a certain extent, but also locate the position of the medium box, which is convenient for the monitoring and management of the medium box, and through reasonable design, the floating component 9 at the upper end of the medium box can be integrated with the surrounding natural environment and artificial landscape, thereby beautifying the river bank.

[0073] An oxygen-filled ecological medium box for improving river water quality also includes a monitoring system, which includes a water quality sensor arranged in the box body 1 and a monitoring manager on the shore.

[0074] In this embodiment, water quality sensors are used to monitor parameters such as pH, dissolved oxygen, and ammonia nitrogen in the medium box in real time, and the data is transmitted to a monitoring manager on shore via a wireless connection to evaluate the effectiveness of the ecological medium box and adjust the environment in the medium box in a timely manner.

[0075] The working principle of the unpowered oxygenation mechanism 97 is as follows:

[0076] The U-shaped floating box 92 always floats on the water surface with the help of its own buoyancy. When the water flows under the U-shaped floating box 92, it will push each blade on each water wheel 972 in the power unit that extends below the opening of the arc cabin 923 to rotate, and then with the help of the power shaft 971, a bevel gear 975 located on the power shaft 971 is driven to rotate, and then with the help of a bevel gear 975 located on the transmission shaft 973, the transmission shaft 973 is driven to rotate, and then the disc 977 is driven to rotate in the sleeve 976, so as to use the eccentric connection between one end of the transmission shaft 973 and the disc 977 to force the sleeve 976 to rotate eccentrically, and then with the help of the end of the connecting rod 978 to swing back and forth, thereby driving the telescopic end of the manual air pump 974 to reciprocate and telescopic motion.

[0077] An air pump is a device that removes air from a closed space or adds air to a closed space. A manual air pump is an air pump powered by hand force. By continuously pushing the piston back and forth by hand force, the air can be continuously compressed to generate air pressure and output it to the outside. The most common manual air pump in daily life is the air pump, and its mechanism and working principle are both existing technologies.

[0078] When the telescopic end of the manual air pump 974 continues to reciprocate and telescope, external air will be continuously sucked into the manual air pump 974 and the air in the manual air pump 974 will be continuously sent to the air outlet plate 979 through the oxygenation tube 9710. The air sent into the air outlet plate 979 will be discharged into the gravel layer 31 or the mixed layer 32 through the pores in the air outlet plate 979, and then flow upward to the river sand layer 33 where the freshwater clams 6 are located, thereby increasing the concentration of dissolved oxygen in the water to promote the growth of freshwater clams 6 and aquatic plants; the air outlet plate 979 is widely used in sewage treatment and aquaculture industries, and its surface has many pores for air circulation, and its structure and principle are also prior art.

[0079] The setting of the unpowered oxygenation mechanism 97 can utilize the flow force of the water flow to continuously oxygenate the interior of the box 1 without the aid of an external electric air pump, which not only saves the purchase and installation of equipment, but also saves the laying of wires and energy to achieve energy saving and environmental protection. In addition, it can also move synchronously with the position of the box 1.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An oxygen-filled ecological medium box for improving river water quality, characterized in that: It comprises a box body, a floating assembly fixed at the top opening of the box body and capable of adjusting the fixed height up and down, a bottom layer medium arranged on the bottom surface of the box body to simulate the riverbed environment, a plurality of freshwater clams uniformly cultured in the bottom layer medium, a middle layer medium laid on the surface of the bottom layer medium to simulate the particle environment of freshwater clams filtering food, and a surface layer medium arranged on the top of the middle layer medium; The water-facing surface, the water-receiving surface and the bottom surface of the box body are all provided with water-passing holes, and two surfaces of the box body connected end to end with the water-facing surface and the water-receiving surface are also provided with a grid net, and a filter net for covering each water-passing hole is also fixed on the inner wall of the water-facing surface, the water-receiving surface and the bottom surface of the box body; The floating assembly includes a U-shaped floating box, a floating frame fixed inside the U-shaped floating box and sleeved outside the top opening of the box body, a baffle vertically fixed inside the U-shaped floating box and located above the water-facing surface of the box body, and a non-powered oxygenation mechanism arranged inside the U-shaped floating box; The partition divides the interior of the U-shaped floating box into a rectangular inner cavity and an L-shaped inner cavity. The bottom of the U-shaped floating box is located on an outer wall on one side above the water-facing surface of the box body, and an arc-shaped cabin is formed toward the interior of the rectangular inner cavity. The unpowered oxygenation mechanism includes a power unit arranged in the arc-shaped cabin and an oxygenation unit arranged in the L-shaped inner cavity and cooperating with the power unit. The middle layer medium includes mixed organic and inorganic matter, and the surface layer medium includes submerged aquatic plants arranged on the surface of the middle layer medium; the mesh of the filter is smaller than that of the bottom layer medium, the middle layer medium and the surface layer medium to prevent the bottom layer medium, the middle layer medium and the surface layer medium from leaking out of the box through the mesh of the filter; the bottom layer medium includes a gravel layer, a mixed layer of river sand and gravel, and a river sand layer arranged in sequence from bottom to top, the gravel layer is laid on the inner bottom surface of the box, the freshwater clams are buried in the river sand layer, and the arrangement density of the freshwater clams is: 10 to 20 pieces / m 2 .

2. The oxygen-filled ecological medium box for improving river water quality according to claim 1, characterized in that: The power unit includes a power shaft that is laterally and rotatably connected between the inner walls on both sides of the arc cabin that are close to and opposite to the vertical shore, and a plurality of water wheels that are concentrically sleeved and fixed on the power shaft and distributed in sequence along the axial direction of the power shaft. One end of the power shaft close to the partition is sealed and rotatably passes through the partition and extends into the interior of the L-shaped inner cavity.

3. The oxygen-filled ecological medium box for improving river water quality according to claim 2, characterized in that: The oxygenation unit includes a transmission shaft which is laterally and rotatably connected to the inside of one end of the L-shaped inner cavity close to the rectangular inner cavity and perpendicular to the power shaft, two bevel gears which are concentrically fixed on the proximal ends of the power shaft and the transmission shaft and mesh with each other, a manual air pump which is fixed to the inside of one end of the L-shaped inner cavity away from the rectangular inner cavity, and a reversing unit arranged between the telescopic end of the manual air pump and the transmission shaft, wherein the telescopic end of the manual air pump is arranged in the direction of the reversing unit and is perpendicular to the transmission shaft.

4. The oxygen-filled ecological medium box for improving river water quality according to claim 3, characterized in that: The reversing unit includes a sleeve, a disc which is concentrically and rotatably arranged in the sleeve, and a connecting rod which is laterally fixed on the outer circumference of the sleeve on the side facing the manual air pump. The end of the transmission shaft which faces the back water surface of the box body is eccentrically fixed on the disc, and the end of the connecting rod is rotatably connected to the telescopic end of the manual air pump.

5. The oxygen-filled ecological medium box for improving river water quality according to claim 3, characterized in that: The oxygenation unit also includes an air outlet disk and an oxygenation pipe. The air outlet disk is arranged in the bottom medium. One end of the oxygenation pipe is sealed and connected to the air inlet of the air outlet disk, and the other end of the oxygenation pipe is sealed and connected to the air outlet of the manual air pump.

6. The oxygen-filled ecological medium box for improving river water quality according to claim 2, characterized in that: The water wheel has at least five blades, and each of the water wheels has at least two blade ends extending below the opening of the arc-shaped cabin; a wire mesh cover located below each water wheel is also fixed at the opening of the arc-shaped cabin to prevent aquatic plants or garbage from entangled with the water wheel.

7. The oxygen-filled ecological medium box for improving river water quality according to claim 5, characterized in that: The gas outlet plate is arranged in the gravel layer or the mixed layer.

8. The oxygen-filled ecological medium box for improving river water quality according to claim 1, characterized in that: A transversely arranged L-shaped cover plate is also fixed in the L-shaped inner cavity, and the outer wall of the L-shaped cover plate is sealed and fixed on the inner wall of the L-shaped inner cavity. The L-shaped cover plate divides the interior of the L-shaped inner cavity into two L-shaped separation chambers arranged upper and lower. The oxygenation unit is arranged in the lower L-shaped separation chamber, and the interior of the upper L-shaped separation chamber and the interior of the rectangular inner cavity are also provided with planting matrix, and aquatic plants are also planted in the planting matrix.

9. The oxygen-filled ecological medium box for improving river water quality according to claim 1, characterized in that: The inner side of the floating frame is also provided with a plant net sunk inside the box body, and phytoplankton is also arranged in the plant net. The lowest point of the plant net is 15 to 25 cm away from the bottom of the floating frame.

10. The oxygen-filled ecological medium box for improving river water quality according to claim 1, characterized in that: It also includes a telescopic component arranged on the side of the box body facing the vertical shore, and a chain rope arranged on the upper end of the telescopic component. The telescopic component is hung on the side wall of the vertical shore through the chain rope. The telescopic component includes a hollow tube vertically fixed to one side of the box body, a telescopic rod concentrically and movably inserted into the hollow tube, and at least one limiter arranged between the hollow tube and the telescopic rod to detachably fix the hollow tube and the telescopic rod to each other, and the end of the telescopic rod extending above the hollow tube is fixed on the floating frame.

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