Seaweed deep and far sea culture floating body equipment based on novel paper folding structure

Abstract

The invention discloses algae deep and far sea culture floating body equipment based on a novel paper folding structure. The equipment comprises a main rod, a plurality of culture rods, a plurality of auxiliary rods, a telescopic rod, a fixed block, a sliding block, a limiting block, a base, a plurality of culture paper folding floating bodies, a connecting bearing, a buoyancy ball, an anchor and an anchor chain; the fixing block and the base are fixed to the top end and the bottom end of the main rod respectively. The main rod is sleeved with the sliding block in a sliding mode. Two ends of the telescopic rod are respectively connected with the slider and the base; the breeding rod and the auxiliary rod are hinged to the fixed block and the sliding block respectively, and the free end of the auxiliary rod is hinged to the breeding rod; the sliding blocks slide along the main rods, so that the breeding rods can be changed between an unfolded state and a folded state; the buoyancy ball is fixed to the top end of the main rod, the breeding origami floating body is arranged on the breeding rod, the breeding origami floating body is provided with a cavity capable of being filled with nutrient substances, and the surface of the shell is provided with a hollow structure. The deep sea algae culture floating body equipment can meet attachment and nutrition carrying of algae culture in deeper sea areas.

Description

Technical Field

[0001] The present invention relates to the technical field of seaweed cultivation, and in particular to a deep - sea seaweed cultivation floating body device based on a novel origami structure. Background Art

[0002] With the continuous increase in population, the growing demand for food, feed, and fuel is exerting great pressure on terrestrial ecosystems. To achieve the climate goals outlined in the United Nations Sustainable Development Goals (SDGs), it is necessary to balance the increase in greenhouse gases by removing carbon from the atmosphere while reducing fossil fuel emissions. Seaweed cultivation can provide diverse biological resources and play a role in mitigating climate change, and is thus regarded by the United Nations as a nature - based climate solution that can pave the way for sustainable global development and progress. According to the requirements of international agreements such as the Paris Agreement, limiting the global temperature rise to 1.5°C or 2°C generally requires removing more than 1 billion tons of carbon from the atmosphere annually. To achieve these climate goals, it is imperative to expand seaweed cultivation. Currently, most seaweed cultivation areas are confined to coastal protected areas, and these areas have limited area and are insufficient to meet the growing cultivation demand. In fact, approximately 90% of the areas suitable for seaweed cultivation have been occupied for other uses. Therefore, it is particularly important to develop a new type of seaweed cultivation system applicable to deeper waters to overcome these limitations.

[0003] Deep - sea seaweed cultivation faces the problem of lacking suitable seaweed attachment structures. Seaweeds usually rely on solid structures in the sea for attachment in the natural environment, which is crucial for their growth and reproduction. However, as the seaweed cultivation depth increases, the existing marine environment and technical facilities cannot meet the seaweed attachment requirements. To address this challenge, researchers have tried to combine seaweed cultivation with existing in - shore structures, such as offshore wind farms, to form multi - purpose offshore power generation and cultivation units. However, these existing aquaculture systems are usually limited by their structural height and depth and cannot effectively adapt to deeper waters. In addition, seaweed growth not only requires a stable attachment structure but also sufficient nutrients. The nutrients in the surface layer of deeper waters are usually scarce and cannot support the normal growth of seaweeds. How to fill nutrients in the attachment structure to meet the growth needs of seaweeds is a problem that the new cultivation system needs to solve. Therefore, there is an urgent need to develop a new type of multi - functional seaweed cultivation system with the ability to adapt to the deeper - sea environment to achieve large - scale cultivation in deeper waters and fully exploit the potential of seaweeds in carbon sequestration, environmental improvement, and promoting sustainable development. Summary of the Invention

[0004] The present invention provides a deep - sea seaweed cultivation floating body device based on a novel origami structure, which can meet the attachment and nutrient - carrying requirements of seaweed cultivation in deeper waters.

[0005] The technical solution of the present invention is as follows:

[0006] A seaweed deep - sea and far - sea aquaculture floating body device based on a novel origami structure, comprising a main rod, a plurality of aquaculture rods, a plurality of auxiliary rods, a telescopic rod, a fixed block, a slider, a limiting block, a base, a plurality of aquaculture origami floating bodies, a connecting bearing, a buoyancy ball, an anchor and an anchor chain;

[0007] The fixed block is fixed at the top of the main rod, the base is fixed at the bottom of the main rod, and the slider is slidably sleeved on the main rod; both ends of the telescopic rod are respectively connected to the slider and the base;

[0008] The limiting block is fixedly arranged above the main rod, and the slider can be limited by the limiting block;

[0009] The aquaculture rods and the auxiliary rods are respectively hinged to the fixed block and the slider, and the other free end of the auxiliary rod is hinged to the aquaculture rod;

[0010] By sliding the slider along the main rod, the aquaculture rod can change between the unfolded state and the folded state; when the slider is fixed on the main rod by the limiting block, the aquaculture rod is in the unfolded state;

[0011] The buoyancy ball is fixed on the fixed block at the top of the main rod, the aquaculture origami floating body is fixed on the aquaculture rod through a connecting bearing, and the anchor is connected to the base through an anchor chain;

[0012] The aquaculture origami floating body has a chamber for filling nutrients and a hollow pattern for seaweed attachment.

[0013] The seaweed deep - sea and far - sea aquaculture floating body device of the present invention has an overall umbrella - shaped structure, and the telescopic rod and the slider can control the unfolding and closing of the umbrella - shaped structure. When the device is in the unfolded state during operation, the aquaculture origami floating body can expand outward in a divergent shape, which is convenient for expanding the scale of seaweed aquaculture, increasing the aquaculture area, and reducing the logistics cost by folding and shrinking the volume of the device during transportation.

[0014] The anchoring method of the seaweed deep - sea and far - sea aquaculture floating body device of the present invention can meet the needs of aquaculture in farther sea areas.

[0015] Preferably, a plurality of aquaculture rods are evenly distributed along the circumference of the fixed block.

[0016] Preferably, a plurality of aquaculture origami floating bodies are evenly arranged on each aquaculture rod.

[0017] Preferably, the aquaculture origami floating body comprises a hollow central floating ball, a plurality of origami functional units, a plurality of connecting modules and two bearing connecting units;

[0018] The origami functional unit has a chamber for filling nutrients and a hollow structure communicating with the chamber for seaweed attachment;

[0019] A number of origami functional units and bearing connection units are interconnected through a connection module to form a housing covering the outer surface of the hollow floating ball;

[0020] The aquaculture origami floating body has through holes through which aquaculture rods can pass, and the aquaculture origami floating body is fixed on the aquaculture rods through the cooperation of the bearing connection unit and the connecting bearing.

[0021] Seaweeds are attached to the surface of the aquaculture origami floating body through a hollowed-out structure, and the nutrients filled in the chambers of the origami functional units can be utilized by the seaweeds.

[0022] Preferably, the shape of the origami functional unit is evolved from a novel origami structure; when a number of novel origami structures are in the unfolded state, they can form a Platonic solid.

[0023] The unfolded state of the novel origami structure is based on a Platonic solid composed of only a single regular polygon. When the novel origami structure is in the folded state, the center of the structure can be embedded in a sphere; the crease pattern of the basic unit of the novel origami structure is a variant of the regular polygon that makes up the Platonic solid to meet specific geometric conditions. When evolving, the radius of the sphere in which the center can be embedded is a fixed value to obtain a series of novel origami structures.

[0024] Further, when the novel origami structure is in the unfolded state, it is a variant of a regular pentagon; in each aquaculture origami floating body, the number of origami functional units is 10.

[0025] The aquaculture origami floating body of the present invention can reduce the flow velocity of the surrounding flow field. On the other hand, the structure of the aquaculture origami floating body of the present invention is modularly designed, which is convenient for manufacturing, assembly and optimization.

[0026] Preferably, in the aquaculture origami floating body, adjacent origami functional units are interconnected by a hinged manner.

[0027] Preferably, the side wall of the origami functional unit in contact with the hollow floating ball is a curved surface adapted to the hollow floating ball.

[0028] The inner curved surface, the surface hollow design, the additional cavity and the connecting seat can form the origami functional unit. The cavity of the origami functional unit can carry nutrients, the complex hollow pattern on the surface is convenient for the attachment and growth of the seaweed roots, the inner curved surface fits the hollow central floating ball, and the connecting seat cooperates with the connection module to connect with other adjacent origami functional units.

[0029] Preferably, the origami functional unit is formed by 3D printing.

[0030] The origami functional unit can be formed by 3D dual-material printing. The solid material is selected as an environmentally friendly material, and the support material is a water-soluble material, which is convenient for removal.

[0031] Further preferably, the material of the origami functional unit is polylactic acid.

[0032] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0033] Compared with traditional seaweed cultivation devices, the deep-sea seaweed cultivation floating body equipment of the present invention, through the umbrella-shaped structure design, is in a closed state during transportation, which can greatly reduce the logistics space and cost. After unfolding, it forms a three-dimensional divergent cultivation area, maximizing the utilization of light and seawater flow to promote the growth of seaweed.

[0034] The present invention adopts the design strategy of a core-shell structure. Based on the hollow central floating ball, an origami functional unit based on a novel origami structure is developed, forming a series of complex origami spherical shells that fit the sphere, facilitating the attachment of the roots during the growth process of seaweed, and solving the problem of the lack of attachment objects in the deep-sea cultivation scenario of seaweed.

[0035] In the origami functional unit based on the novel origami structure, there are also cavities for carrying nutrients, providing nutrients for the growth of seaweed in the deep sea.

[0036] In addition, the manufacturing process and assembly method of the present invention are simple, and environmentally friendly materials with marine environmental friendliness are used, reducing the long-term impact on the marine ecosystem. It is especially suitable for ecologically sensitive sea areas and helps to expand the seaweed cultivation area to deeper sea areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the deep-sea seaweed cultivation floating body equipment based on the novel origami structure.

[0038] Figure 2 It is a schematic diagram of the structure of the cultivation origami floating body.

[0039] Figure 3 It is a schematic diagram of the initial and folded states of the novel origami structure.

[0040] Figure 4 For Figure 2 It is the crease pattern of the basic unit of the novel origami structure corresponding to the origami functional unit in

[0041] Figure 5 For Figure 3 It is the folding effect diagram of the novel origami structure formed by the combination of basic units in changing with parameters.

[0042] Figure 6 It is the top view and front cross-sectional view of the origami functional unit with a complex surface.

[0043] Figure 7 It is the manufacturing process diagram of the dual-material 3D printing of the origami functional unit.

[0044] In the figure: 1 - buoyancy ball, 2 - connecting bearing, 3 - aquaculture origami floating body, 4 - limit block, 5 - slider, 6 - main rod, 7 - telescopic rod, 8 - base, 9 - aquaculture rod, 10 - auxiliary rod, 11 - anchor chain, 12 - anchor, 13 - fixing block, 31 - hollow central floating ball, 32 - origami functional unit, 33 - bearing connection unit, 34 - connection module, 321 - hollow pattern, 322 - inner curved surface, 323 - cavity, 324 - connection seat. Detailed implementation manner

[0045] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be noted that the following embodiments are intended to facilitate the understanding of the present invention and do not limit it in any way.

[0046] As Figure 1 shown, the seaweed deep - sea aquaculture floating body device based on a novel origami structure proposed by the present invention mainly includes a buoyancy ball 1, a connecting bearing 2, an aquaculture origami floating body 3, a limit block 4, a slider 5, a main rod 6, a telescopic rod 7, a base 8, an aquaculture rod 9, an auxiliary rod 10, an anchor chain 11, an anchor 12 and a fixing block 13. The buoyancy ball 1 is fixed at the top of the main rod 6, the limit block 4 is fixed in the upper half of the main rod 6, the base 8 is fixed at the bottom of the main rod 6 and is connected to the anchor 12 through the anchor chain 11. Both ends of the telescopic rod 7 are respectively connected to the base 8 and the slider 5, and the slider 5 can slide on the main rod 6. The aquaculture origami floating body 3 is fixed on the aquaculture rod 9 through the connecting bearing 2, and the aquaculture rod 9 is connected to the slider 5 through the auxiliary rod 10.

[0047] The overall seaweed aquaculture floating body device forms an umbrella - like structure, enabling the aquaculture origami floating body 3 to expand outward in a divergent manner, facilitating the expansion of the aquaculture scale. The telescopic rod 7 and the limit block 4 can control the opening and closing of the umbrella - like structure. The opening state and the closing state are as Figure 1 shown. When transporting, it is folded to reduce the volume and lower the logistics cost. When operating, it is unfolded to increase the aquaculture area. And an anchoring method that combines the anchor chain 11, the anchor 12 and the base 8 is adopted, which can meet the needs of aquaculture in farther sea areas. The buoyancy ball 1 and the aquaculture origami floating body 3 provide buoyancy for the entire device.

[0048] As Figure 2 shown, the overall design concept of the aquaculture origami floating body 3 in the seaweed aquaculture floating body device is based on a core - shell structure. In order to provide marine surface attachments for deep - sea seaweed aquaculture, it is composed of a hollow central floating ball 31, an origami functional unit 32, a bearing connection unit 33 and a connection module 34.

[0049] The material of the hollow central floating ball is PVC plastic. Here, the commonly used PVC floating ball in fishing gear is adopted, which has the function of providing buoyancy for the seaweed deep - sea aquaculture floating body device, ensuring that the device can float stably on the sea surface and supporting the growth of seaweed on the sea surface with sufficient sunlight.

[0050] The origami functional unit is the smallest combined unit of a complex spherical shell covering the outside of a hollow central floating sphere. Its shape mainly comes from a new type of origami structure, such as Figure 3 shown. The new origami structure is evolved from a sphere. By folding and changing according to the creases, a three-dimensional structure with an embeddable sphere in the center can be obtained.

[0051] The unfolded state of the new origami structure is similar to a Platonic solid that only contains a single regular polygon. In the example, the regular dodecahedron in the Platonic solids is selected as an approximation. The crease pattern of the basic unit of the new origami structure must satisfy three-dimensional geometric conditions so that it can be assembled into a regular dodecahedron in both the initial state and the folded state. Analyzed from the perspective of solid geometry, the crease area of the basic unit is not a regular pentagon, but a variant based on a regular pentagon.

[0052] As Figure 4 shown, the crease area of the basic unit of the new origami structure enclosed by the boundary lines is a variant based on pentagon A 1 B 1 C 1 D 1 E 1 . This variant is a symmetric 25-sided polygon. The basic unit creases are mainly controlled by two concentric base circles (⊙ABCDE and ⊙A 1 B 1 C 1 D 1 E 1 ), and these two base circles respectively contain inscribed regular pentagons (pentagon ABCDE and pentagon A 1 B 1 C 1 D 1 E 1 ).

[0053] Among them, the radius of the outer base circle ⊙A 1 B 1 C 1 D 1 E 1 is a constant K, and the radius difference from the inner base circle ⊙ABCDE is denoted as a. During the folding process, when ΔBB 1 I and ΔBB 1 J are in contact with each other, self-locking is formed to reach the final folded state. At this time, point I and point J overlap to form point B'. In the same way, four points A', C', D', and E' can also be formed, and they are connected in sequence to form a new pentagon A'B'C'D'E'.

[0054] The circumscribed sphere of the regular dodecahedron formed based on pentagon A'B'C'D'E' is defined as the hollow central floating sphere, and its radius is a constant R F . In K and RF When all are constant values, deduce the geometric relationship during the folding process of the basic unit. The methods of auxiliary lines and geometric relationships are as follows:

[0055] Point B 2 is a point on the crease of adjacent basic units in the regular dodecahedron formed by the combination of folded basic units. B 2 N and BN are symmetric about the plane B′NC′. Draw a line l parallel to CD through point B on the plane ABCDE 1 , and use the same method to draw a line l parallel to the corresponding line through point B 2 in adjacent basic units 2 , and these two lines intersect at point M. Through geometric relationship analysis, points M, F, N, and G are collinear, and the angle ∠B 2 MB is the dihedral angle of the regular dodecahedron, denoted as θ, and the value is Draw a perpendicular line from point M to B′C′ passing through point N. Due to the symmetry about the plane B′NC′, it intersects the line B′C′ exactly at point G. MN is perpendicular to B 2 B, and point F is the perpendicular point. Draw a perpendicular line BH from point B perpendicular to the plane A′B′C′D′E′, and the foot of the perpendicular is point H.

[0056] Through the above auxiliary lines and geometric relationships, we can deduce the following important geometric relationships for the folding of the crease of the basic unit of the new origami structure:

[0057]

[0058] m = 2(K - a)cos(0.3π) (2)

[0059]

[0060]

[0061] In the formula, m and m F respectively represent the edge lengths of the pentagons ABCDE and B′B′C′D′E′, V d represents the volume difference between the outer shell of the new origami structure and the hollow central floating ball, S o represents the surface area of the outer shell of the new origami structure, and h represents the vertical distance between the pentagons ABCDE and A′B′C′D′E′ between the initial state and the folded state.

[0062] Meanwhile, in order to enable the new origami structure to perform reasonable folding changes without problems such as penetration, the change of the parameter a needs to satisfy the dual geometric conditions of ∠BNG > 0.5π and B′G > 0.

[0063] In the example, when RF When set to 60 and K is set to 50, its variation range can be obtained through calculation as 13.5763 to 28.6263. As Figure 5 shown, by changing the value of parameter a, a series of basic unit crease patterns that conform to geometric relationships and a series of new origami structure shells composed of them can be obtained.

[0064] Based on the above new origami structure, it can be designed to form the outer shape of the origami functional unit 32 based on the folding of basic units as shown in Figure 6 shown. After further designing the inner curved surface 322 and the surface hollow pattern 321, adding a cavity 323 and a connecting seat 324, etc., the origami functional unit can be formed. It has a cavity 323 that can carry nutrients and can carry nutrients with a slow-release function. The surface has a complex hollow pattern 321. In the example, a spiral structure similar to the "Fanghui pattern" in traditional Chinese patterns is adopted. The complex surface pattern facilitates the attachment and growth of seaweed roots on the surface. The inner side of the origami functional unit is an inner curved surface 322 that fits the curvature of the hollow center floating ball.

[0065] As Figure 7 shown, the origami functional unit has a connecting seat structure that cooperates with the connecting module. When connecting with other origami functional units, a connection method similar to a hinge is adopted. Each origami functional unit has five edges, and connecting seats need to be arranged on each edge for connection. There are two ways to arrange the connecting seats: one on each edge or two on each edge. According to the calculation, in order to conform to the shape of a regular dodecahedron, two origami functional units with different connecting seat arrangements are designed: 11212 and 22121, where 1 and 2 represent the number of connecting seats arranged on each edge. When combining to form the aquaculture origami floating body, five of each of these two origami functional units with different connecting seat arrangements are required, and at the same time, two bearing connection units need to be added.

[0066] As Figure 7 shown, due to the complex hollow pattern on the surface of the origami functional unit, it is formed by 3D dual-material printing. The solid material is selected as the environmentally friendly material PLA (polylactic acid), and the support material is the water-soluble material PVA (polyvinyl alcohol). After the model printing is completed, it needs to be immersed in water for 24 hours to remove the water-soluble support material.

[0067] The above-described embodiments have detailed the technical solutions and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modifications, supplements, equivalent replacements, etc. made within the scope of the principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A floating device for deep-sea algae cultivation based on a novel origami structure, characterized in that: It includes a main pole, several breeding poles, several auxiliary poles, a telescopic pole, a fixed block, a slider, a limit block, a base, several breeding origami floats, a connecting bearing, a buoyancy ball, an anchor and an anchor chain; The fixed block is fixed to the top of the main rod, the base is fixed to the bottom of the main rod, and the slider is slidably sleeved on the main rod; the two ends of the telescopic rod are respectively connected to the slider and the base; The limit block is fixedly arranged above the main rod, and the slide block can be limited by the limit block; The breeding rod and the auxiliary rod are hinged on the fixed block and the sliding block respectively, and the other free end of the auxiliary rod is hinged on the breeding rod; The aquaculture pole can be changed between an extended state and a retracted state by sliding the slider along the main pole; when the slider is fixed on the main pole by the limit block, the aquaculture pole is in an extended state; The buoyancy ball is fixed on the fixed block at the top of the main pole, the aquaculture origami float is fixed on the aquaculture pole through a connecting bearing, and the anchor is connected to the base through an anchor chain; The aquaculture origami float has a cavity that can be filled with nutrients and a hollow pattern for seaweed to attach.

2. The deep-sea algae aquaculture floating device based on a novel origami structure according to claim 1 is characterized in that: A plurality of culture rods are evenly distributed along the circumference of the fixed block.

3. The deep-sea algae aquaculture floating device based on a novel origami structure according to claim 1 or 2 is characterized in that: A plurality of aquaculture origami floats are evenly arranged on each aquaculture pole.

4. The seaweed deep-sea aquaculture floating device based on a novel origami structure according to claim 1 is characterized in that: The aquaculture origami float comprises a hollow central float, a plurality of origami functional units, a plurality of connection modules and two bearing connection units; The origami functional unit has a cavity that can be filled with nutrients, and a hollow structure that is connected to the cavity and can be attached to seaweed; A plurality of origami functional units and bearing connection units are connected to each other through a connection module to form a shell covering the outside of the hollow floating ball; The aquaculture origami float is provided with a through hole for the aquaculture rod to pass through, and the aquaculture origami float is fixed on the aquaculture rod through the cooperation of the bearing connection unit and the connection bearing.

5. The deep-sea algae aquaculture floating device based on the novel origami structure according to claim 4 is characterized in that: The shape of the origami functional unit is evolved from a novel origami structure; a number of novel origami structures can form a Platonic solid when in an unfolded state.

6. The seaweed deep-sea aquaculture floating device based on a novel origami structure according to claim 5 is characterized in that: The novel origami structure is a variant of a regular pentagon when in an unfolded state; in each aquaculture origami float, the number of origami functional units is 10.

7. The deep-sea algae aquaculture floating device based on a novel origami structure according to claim 4 is characterized in that: In the aquaculture origami float, adjacent origami functional units are connected to each other by hinges.

8. The deep-sea algae aquaculture floating device based on a novel origami structure according to claim 4 is characterized in that: The side wall of the origami functional unit in contact with the hollow floating ball is a curved surface adapted to the hollow floating ball.

9. The deep-sea algae aquaculture floating device based on a novel origami structure according to claim 4 is characterized in that: The origami functional unit is formed by 3D printing.

10. The deep-sea algae aquaculture floating device based on a novel origami structure according to claim 4 is characterized in that: The material of the origami functional unit is polylactic acid.

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