A microalgae cultivation device based on carbon neutrality

Abstract

The present invention discloses a microalgae cultivation device based on carbon neutrality, comprising a cultivation pool and a wall-mounted pipe arranged in the middle of a wall of the cultivation pool, wherein a plurality of sealed transparent pipes are movably arranged on the wall-mounted pipe, and a lighting strip is arranged in each sealed transparent pipe; a plurality of evenly distributed main lifting and regulating mechanisms are arranged on the wall-mounted pipe; auxiliary buoyancy regulating mechanisms are arranged on a plurality of adjacent sealed transparent pipes, and the auxiliary buoyancy regulating mechanisms replenish carbon dioxide for the cultivation pool for photosynthesis when inflated, and the inflated auxiliary buoyancy regulating mechanisms drive the sealed transparent pipes to rotate around the wall-mounted pipes, so that the sealed transparent pipes float on the surface of the water in the cultivation pool; the wall-mounted pipes sink along the wall of the cultivation pool to the inside of the cultivation pool after the main lifting and regulating mechanisms are exhausted, and the sealed transparent pipes are vertically distributed in the water body of the cultivation pool after the auxiliary buoyancy regulating mechanisms are exhausted; the present invention provides lighting requirements that meet photosynthesis, and at the same time facilitates the maintenance of the sealed transparent pipes.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon neutrality, and in particular to a microalgae cultivation device based on carbon neutrality. Background Art

[0002] "Carbon" refers to carbon dioxide, and "neutralization" means the positive and negative offset each other. The emitted carbon dioxide or greenhouse gas is offset by afforestation, energy conservation and emission reduction, which is the so-called "carbon neutrality". The means to reduce carbon dioxide emissions are: one is carbon sequestration, which is mainly achieved by natural carbon sinks such as soil, forests and oceans absorbing and storing carbon dioxide in the air. What humans can do is afforestation; the second is carbon offset, which is achieved by investing in the development of renewable energy and low-carbon clean technologies, reducing carbon dioxide emissions in one industry to offset the emissions of another industry. The unit of calculation of the offset is tons of carbon dioxide equivalent.

[0003] Microalgae refers to those tiny algae groups whose morphology can only be distinguished under a microscope. Microalgae usually refers to the general term for microorganisms that contain chlorophyll a and can perform photosynthesis, and are a type of protists. If microalgae can be cultivated efficiently and on a large scale, it will be of great significance in dealing with the high production cost of microalgae products and the greenhouse effect caused by carbon dioxide. At present, the cultivation methods of microalgae mainly include: open raceway pool cultivation, closed photobioreactor (autotrophic and heterotrophic) cultivation.

[0004] Microalgae are cultivated in open culture ponds, which absorb a large amount of carbon dioxide through photosynthesis to achieve carbon neutrality. In order to reduce the area occupied by open microalgae cultivation, cultivation ponds are often used for microalgae cultivation. Since the cultivation ponds are very deep, the amount of light is relatively small and the CO2 content is also relatively low, which affects the reproduction of microalgae and also affects the photosynthesis of microalgae.

[0005] The commonly used existing method is to circulate ventilation or circulate convection of water in the upper and lower layers of the cultivation pond to ensure the reproduction and photosynthetic carbon fixation function of microalgae. However, this method consumes a lot of energy and does not significantly improve the photosynthesis efficiency. Summary of the invention

[0006] The purpose of the present invention is to provide a microalgae cultivation device based on carbon neutrality to solve the technical problems in the prior art that microalgae cultivation and photosynthesis consume a lot of energy and the photosynthesis efficiency is not significantly improved.

[0007] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0008] A carbon-neutral microalgae cultivation device comprises a downwardly-lying cultivation pool, and a wall-mounted pipe arranged in the middle of the wall of the cultivation pool, wherein a plurality of sealed transparent pipes are movably arranged on the wall-mounted pipe, and each of the sealed transparent pipes is provided with a lighting strip for supplementing light for the cultivation pool to perform photosynthesis;

[0009] The wall-mounted pipe is provided with a plurality of evenly distributed main lifting and regulating mechanisms, and the main lifting and regulating mechanisms drive the wall-mounted pipe as a whole to move up and down along the water body of the cultivation pool through the operation of filling and exhausting air;

[0010] An auxiliary buoyancy regulating mechanism integrating inflation and exhaust functions is provided on a plurality of adjacent sealed transparent pipes, wherein the auxiliary buoyancy regulating mechanism replenishes carbon dioxide for the cultivation pool for photosynthesis when inflated, and the inflated auxiliary buoyancy regulating mechanism drives the sealed transparent pipe to rotate around the wall-mounted pipe, so that the sealed transparent pipe floats on the surface of the water in the cultivation pool;

[0011] The wall-mounted pipe sinks along the wall of the cultivation pool to the inside of the cultivation pool after the main lifting and regulating mechanism exhausts air, and the sealed transparent pipe is vertically distributed in the water body of the cultivation pool after the auxiliary buoyancy regulating mechanism exhausts air.

[0012] As a preferred solution of the present invention, the auxiliary buoyancy control mechanism includes a buoyancy bag arranged on the side of the sealed transparent pipe close to the wall of the cultivation pool, and all the buoyancy bags are commonly connected to an inflation and exhaust machine. After the buoyancy bag is exhausted, the sealed transparent pipe rotates in the water body of the cultivation pool under the action of its own weight, and the sealed transparent pipe is rotated through a rotating ring to maintain a vertical state with the wall-mounted pipe. After the buoyancy bag is inflated, the sealed transparent pipe is rotated to the water surface of the cultivation pool under the action of buoyancy to clean the sealed transparent pipe.

[0013] As a preferred solution of the present invention, the buoyancy bag is provided with a rubber particle surface for sticking to the sealed transparent pipe, and the buoyancy bag is also provided with a rubber strip for reducing the impact force between the sealed transparent pipe and the side wall of the cultivation pool, and the upper end of the buoyancy bag is provided with inflation and exhaust holes, the inflation and exhaust holes are connected to a multi-way integrated pipe, and the multi-way integrated pipe is connected to an inflation and exhaust all-in-one machine.

[0014] As a preferred solution of the present invention, the lower end of the sealed transparent pipe is connected to a gravity block via a pull rope, a glue-free area is provided at the center of the rubber particle surface, and the glue-free area forms a hollow groove through which the pull rope passes, and a slot groove is also provided at the center of the rubber strip, and a stopper is provided at the upper end of the slot groove, through which the pull rope passes, and the gravity block is connected to the end of the pull rope, and after the buoyancy bag is inflated, the gravity block moves up along the slot groove due to the extrusion effect to ensure that the sealed transparent pipe rotates around the wall-mounted pipe through the installation circle.

[0015] As a preferred solution of the present invention, the wall-mounted pipe is divided into a plurality of partitions, and the plurality of buoyancy bags in each partition are connected to the same multi-channel integrated pipe through the inflation and exhaust holes, and the inflation and exhaust integrated machine simultaneously inflates and deflates the plurality of buoyancy bags connected to the multi-channel integrated pipe;

[0016] The multi-channel integrated pipeline includes a type of branch pipelines connected to the inflation and exhaust holes, and a main pipeline connected to the type of branch pipelines, the main pipeline is connected to the pipeline of the inflation and exhaust machine, the type of branch pipelines is provided with a side air outlet, and the side air outlet is provided with a second air valve, the type of branch pipeline is provided with a first air valve at the lower end of the second air valve, the second air valve is used to fill air into the liquid in the cultivation pool, and the first air valve is used to fill air into the buoyancy bag.

[0017] As a preferred solution of the present invention, the main lifting and regulating mechanism includes a reduction pipe arranged at the center position of the wall-mounted pipe in each partition, and an elastic shrinkage roll is installed on the reduction pipe, and a telescopic airbag is fixedly attached to the inner surface of the elastic shrinkage roll, and circular curved panels parallel to the reduction pipe are welded on the wall-mounted pipes at both ends of the reduction pipe, and an open groove is provided at the upper end of the circular curved panel, and the elastic shrinkage roll is sealed in the space between the circular curved panel and the reduction pipe.

[0018] As a preferred solution of the present invention, the circular curved panel is provided with a perforation at one end portion of the elastic shrinkage roll, and the multi-way integrated pipeline is provided with two types of branch pipelines, and the two types of branch pipelines are sealed and pass through the perforation to be connected to the telescopic airbag, and a third air valve is provided in the two types of branch pipelines, and the third air valve is used to turn on or off the inflation and deflation operations of the telescopic airbag.

[0019] As a preferred solution of the present invention, a storage mechanism for storing the first category branch pipes and the second category branch pipes is provided at the edge of the cultivation pool. The storage mechanism releases the first category branch pipes and the second category branch pipes when the wall-mounted pipe sinks, so that the lengths of the first category branch pipes and the second category branch pipes meet the inflation and exhaust requirements. The storage mechanism retracts the first category branch pipes and the second category branch pipes when the wall-mounted pipe moves upward, so that the lengths of the first category branch pipes and the second category branch pipes meet the inflation and exhaust requirements.

[0020] As a preferred embodiment of the present invention, the storage mechanism includes a hollow groove arranged at the edge of the cultivation pond, and a telescopic movable plate arranged inside the hollow groove, the notch of the hollow groove is trumpet-shaped, the inner side of the telescopic movable plate and the bottom of the hollow groove are connected by an elastic band, the outer side of the telescopic movable plate is provided with a plurality of vertical perforations in different directions, the opening diameters at both ends of the vertical perforations are larger than the middle perforation diameter of the vertical perforations, and the first type of branch pipes and the second type of branch pipes pass through the vertical perforations.

[0021] As a preferred solution of the present invention, the switching regulation of the first air valve and the third air valve is the same, and the switching regulation of the first air valve and the third air valve is opposite to the switching regulation of the second air valve. When the first air valve and the third air valve are opened for inflation or deflating, the second air valve is closed and temporarily does not work. When the first air valve and the third air valve are closed and temporarily does not work, the second air valve is opened for inflation operation.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention arranges a lighting strip encapsulated by a sealed transparent pipe in the middle position of the cultivation pond wall, the lighting strip is used to provide light for microalgae cultivation, the sealed transparent pipe can move up and down along the cultivation pond wall by buoyancy, so that the sealed transparent pipe sinks to the inside of the cultivation pond to provide light that meets the photosynthesis demand, the sealed transparent pipe moves up and is horizontally distributed on the surface of the cultivation pond to facilitate cleaning of the sealed transparent pipe, ensure the light transmittance of the sealed transparent pipe, and improve the carbon fixation effect of the entire cultivation pond. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0025] Figure 1 A schematic diagram of the overall structure of a microalgae cultivation device provided in an embodiment of the present invention;

[0026] Figure 2 A schematic diagram of the side cross-section structure of the main lifting and lowering control mechanism provided in an embodiment of the present invention;

[0027] Figure 3 A schematic diagram of the structure of an elastic shrink roll provided by an embodiment of the present invention;

[0028] Figure 4 A schematic diagram of the structure of an auxiliary buoyancy control mechanism provided in an embodiment of the present invention;

[0029] Figure 5 A schematic diagram of the overall structure of a multi-channel integrated pipeline provided by an embodiment of the present invention;

[0030] Figure 6 A schematic diagram of the installation structure of a gravity block provided in an embodiment of the present invention;

[0031] Figure 7 A schematic side structural diagram of a storage mechanism provided in an embodiment of the present invention.

[0032] The numbers in the figure represent the following:

[0033] 1-cultivation pool; 2-wall-mounted pipe; 3-sealed transparent pipe; 4-main lifting and lowering control mechanism; 5-auxiliary buoyancy control mechanism; 6-pull rope; 7-gravity block; 8-hollow groove; 9-slot groove; 10-stopper; 11-storage mechanism; 12-lighting strip;

[0034] 41-reducing pipe; 42-elastic shrink roll; 43-telescopic airbag; 44-circular curved panel; 45-opening slot;

[0035] 51-buoyancy bag; 52-inflating and exhausting integrated machine; 53-rotating ring; 54-multi-channel integrated pipeline;

[0036] 511- rubber particle surface; 512- rubber strip; 513- filling and exhaust holes;

[0037] 541- first-class branch pipeline; 542- main pipeline; 543- side air outlet; 544- second air valve; 545- first air valve; 546- second-class branch pipeline; 547- third air valve;

[0038] 111 - hollow groove; 112 - telescopic movable plate; 113 - elastic band; 114 - vertical perforation. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] like Figure 1 As shown, the present invention provides a microalgae cultivation device based on carbon neutrality, microalgae culture, and an artificial culture method in which microalgae cells achieve large-scale growth and proliferation under certain conditions. It can be divided into closed culture and open culture. The former includes various container and pipeline closed culture methods, and the latter includes open non-circulating culture, open circulating culture, and semi-open circulating culture. For the purpose of carbon neutrality, open culture is required to absorb a large amount of carbon dioxide.

[0041] Therefore, the present embodiment cultivates microalgae in an open culture pond, and absorbs a large amount of carbon dioxide through photosynthesis to achieve carbon neutrality. The conditions required for photosynthesis are CO2, light and water. Since the culture pond is very deep, the amount of light is relatively small and the CO2 content is also relatively low, which affects the reproduction of microalgae and also affects the photosynthesis of microalgae.

[0042] In order to solve the above problems, the present embodiment also arranges a lighting strip encapsulated by a sealed transparent pipe in the middle position of the cultivation pond wall. The lighting strip is used to provide light for microalgae cultivation. Since there are many microorganisms breeding in the cultivation pond, the light transmittance of the sealed transparent pipe will decrease after a period of use. Therefore, the sealed transparent pipe of the present embodiment can move up and down along the wall of the cultivation pond by buoyancy, so that the sealed transparent pipe sinks to the inside of the cultivation pond to provide lighting that meets the photosynthesis requirements. The sealed transparent pipe moves up and is horizontally distributed on the surface of the cultivation pond to facilitate the cleaning of the sealed transparent pipe and ensure the light transmittance of the sealed transparent pipe, so as to improve the carbon fixation effect of the entire cultivation pond.

[0043] The carbon-neutral microalgae cultivation device specifically includes a carbon-neutral microalgae cultivation device, including a downward-lying cultivation pool 1, and a wall-mounted pipe 2 arranged in the middle of the wall of the cultivation pool 1, and a plurality of sealed transparent pipes 3 are movably arranged on the wall-mounted pipe 2, and each sealed transparent pipe 3 is provided with a lighting strip 12 for supplementing light for the cultivation pool 1 for photosynthesis.

[0044] A plurality of evenly distributed main lifting and regulating mechanisms 4 are provided on the wall-mounted pipe 2 . The main lifting and regulating mechanisms 4 drive the wall-mounted pipe 2 as a whole to move up and down along the water body of the cultivation pool 1 through inflation and exhaust operations.

[0045] An auxiliary buoyancy regulating mechanism 5 integrating inflation and exhaust functions is provided on multiple adjacent sealed transparent pipes 3. The auxiliary buoyancy regulating mechanism 5 replenishes carbon dioxide for photosynthesis to the cultivation pool 1 when inflated, and the inflated auxiliary buoyancy regulating mechanism 5 drives the sealed transparent pipes 3 to rotate around the wall-mounted pipes 2 so that the sealed transparent pipes 3 float on the water surface of the cultivation pool 1.

[0046] The wall-mounted pipe 2 sinks along the wall of the cultivation pool 1 to the inside of the cultivation pool 1 after the main lifting and regulating mechanism 4 is exhausted, and the sealed transparent pipe 3 is vertically distributed in the water body of the cultivation pool 1 after the auxiliary buoyancy regulating mechanism 5 is exhausted.

[0047] This embodiment mainly relies on the buoyancy of the air bag of the main lifting and regulating mechanism 4 to drive the wall-mounted pipe 2 to move up and down along the wall of the cultivation pool 1. When the main lifting and regulating mechanism 4 is inflated, the buoyancy is used to drive the wall-mounted pipe 2 to rise until the wall-mounted pipe 2 floats on the surface of the water in the cultivation pool 1. However, at this time, the sealed transparent pipe 3 is still vertically in the water body. In order to facilitate the cleaning of the sealed transparent pipe 3, it is necessary to float the sealed transparent pipe 3 on the surface of the water in the cultivation pool 1. Therefore, this embodiment uses the auxiliary buoyancy regulating mechanism 5 to drive the sealed transparent pipe 3 to float on the cultivation pool 1, and at the same time uses the auxiliary buoyancy regulating mechanism 5 to inflate the middle position of the cultivation pool 1 to accelerate the photosynthesis of microalgae.

[0048] like Figure 2 and Figure 3 As shown, the specific upward and downward movement of the wall-mounted pipe 2 is realized as follows: the main lifting and regulating mechanism 4 includes a reduction pipe 41 arranged at the center position of the wall-mounted pipe 2 in each partition, and an elastic shrink roll 42 is installed on the reduction pipe 41, and a telescopic air bag 43 is fixedly attached to the inner surface of the elastic shrink roll 42, and circular curved panels 44 parallel to the reduction pipe 41 are welded on the wall-mounted pipes 2 at both ends of the reduction pipe 41, and an opening groove 45 is provided at the upper end of the circular curved panel 44, and the elastic shrink roll 42 is sealed in the space between the circular curved panel 44 and the reduction pipe 41.

[0049] The circular curved panel 44 is provided with a perforation at one of the ends of the elastic shrink roll 42, and the multi-way integrated pipeline 54 is provided with a second type of branch pipeline 546, the second type of branch pipeline 546 is sealed through the perforation and connected to the telescopic airbag 43, and a third air valve 547 is provided in the second type of branch pipeline 546, and the third air valve 547 is used to turn on or off the inflation and deflating operations of the telescopic airbag 43.

[0050] The structure for realizing the sealed transparent pipe 3 floating on the surface of the water body is as follows: the auxiliary buoyancy control mechanism 5 includes a buoyancy bag 51 arranged on the side of the sealed transparent pipe 3 close to the wall of the cultivation pool 1, and all the buoyancy bags 51 are commonly connected to an inflation and exhaust integrated machine 52. After the buoyancy bags 51 are evacuated, the sealed transparent pipe 3 rotates in the water body of the cultivation pool 1 under the action of its own weight, and the sealed transparent pipe 3 rotates through the rotating ring 53 to maintain a vertical state with the wall-mounted pipe 2. After the buoyancy bags 51 are inflated, the sealed transparent pipe 3 is rotated to the water surface of the cultivation pool 1 under the action of buoyancy to clean the sealed transparent pipe 3.

[0051] The buoyancy bag 51 is provided with a rubber particle surface 511 for sticking to the sealed transparent pipe 3, and the buoyancy bag 51 is also provided with a rubber strip 512 for reducing the impact force between the sealed transparent pipe 3 and the side wall of the cultivation pool 1. The upper end of the buoyancy bag 51 is provided with an inflation and exhaust hole 513, and the inflation and exhaust hole 513 is connected to a multi-way integrated pipe 54, and the multi-way integrated pipe 54 is connected to the inflation and exhaust integrated machine 52.

[0052] In this embodiment, the wall-mounted pipe 2 is divided into multiple partitions, and the multiple buoyancy bags 51 in each partition are connected to the same multi-channel integrated pipe 54 through the inflation and exhaust holes 513. The inflation and exhaust integrated machine 52 inflates and deflates the multiple buoyancy bags 51 connected to the multi-channel integrated pipe 54 at the same time.

[0053] like Figure 5 As shown, the multi-channel integrated pipeline 54 includes a type of branch pipeline 541 connected to the inflation and exhaust holes 513, and a main pipeline 542 connected to the type of branch pipeline 541, the main pipeline 542 is connected to the pipeline of the inflation and exhaust machine 52, the type of branch pipeline 541 is provided with a side air outlet 543, and the side air outlet 543 is provided with a second air valve 544, the type of branch pipeline 541 is provided with a first air valve 545 at the lower end of the second air valve 544, the second air valve 544 is used to fill air into the liquid in the cultivation pool 1, and the first air valve 545 is used to fill air into the buoyancy bag 51.

[0054] Generally speaking, the surface of the sealed transparent pipe 3 is cleaned to ensure the normal lighting effect of the lighting strip 12. The specific working method is as follows:

[0055] First, open all the third air valves 547, and use all the inflation and exhaust machines 52 to inflate the reduction pipes 41 of the wall-mounted pipe 2 at the same time. Since the reduction pipes 41 on the wall-mounted pipe 2 are evenly distributed, under the uniform action of buoyancy, the wall-mounted pipe 2 moves stably upward along the wall of the cultivation pool 1 under the action of the telescopic airbag 43.

[0056] At the same time, open the first air valve 545, and use all the inflation and exhaust machines 52 to inflate the buoyancy bags 51 fixedly attached to the sealed transparent pipes 3 of each partition at the same time. The buoyancy bags 51 generate buoyancy for the sealed transparent pipes 3, so that the sealed transparent pipes 3 are rotated to the water surface of the cultivation pool 1 through the rotating ring 53.

[0057] Through the above two operations, the wall-mounted pipe 2 can quickly rise to the surface of the cultivation pool 1 under the action of double buoyancy, and can also realize the automatic floating of the sealed transparent pipe 3 on the surface of the cultivation pool 1. By continuing to rotate the sealed transparent pipe 3, the surface of the sealed transparent pipe 3 can be manually cleaned to remove the obstructing microorganisms on the sealed transparent pipe 3, thereby ensuring the light transmittance of the sealed transparent pipe 3, thereby realizing the continuous and stable carbon neutral operation of the microalgae cultivation device.

[0058] At this time, the second gas valve 544 is in a closed state, and there is no need to supply gas to the culture pool 1.

[0059] The sealed transparent pipe 3 after the surface cleaning is put back into the cultivation pool 1, and the specific working method of photosynthesis inside the cultivation pool 1 is as follows:

[0060] Keep the second gas valve 544 closed at this time, and there is no need to supply gas to the culture pool 1;

[0061] The inflating and exhausting machine 52 is used to exhaust the telescopic airbag 43 and the buoyancy bag 51 at the same time. At this time, the wall-mounted pipe 2 sinks to a fixed position along the wall of the cultivation pool 1 due to the action of gravity.

[0062] The second gas valve 544 is opened, and the lighting strip 12 and the gas charged are combined to carry out all-round microalgae cultivation and photosynthesis.

[0063] After the telescopic airbag 43 is evacuated, it is completely squeezed and adheres to the inner surface of the elastic shrink roll 42. In this way, the elastic shrink roll 42 automatically recovers to the contracted state under the action of the rebound force and automatically returns to the space between the circular curved plate 44 and the shrinking pipe 41.

[0064] That is, the switching regulation of the first air valve 545 and the third air valve 547 is the same, and the switching regulation of the first air valve 545 and the third air valve 547 is opposite to the switching regulation of the second air valve 544. When the first air valve 545 and the third air valve 547 are opened for inflation or deflating, the second air valve 544 is closed and temporarily not working. When the first air valve 545 and the third air valve 547 are closed and temporarily not working, the second air valve 544 is opened for inflation operation.

[0065] Therefore, through the above operation, the present embodiment can achieve stable cultivation of microalgae without turning the microalgae inside the cultivation pool 1 up and down, and balance the exposure of microalgae to light and air, thereby ensuring uniform photosynthesis from top to bottom in the cultivation pool 1.

[0066] Since it is necessary to frequently replace the water content in order to cultivate microalgae and to ensure timely water supply inside the cultivation pool 1 during the cultivation process, in order to prevent the sealed transparent pipe 3 from colliding with the wall of the cultivation pool 1 due to the shaking of the water flow, and to protect the installation stability of the lighting strip 12, this embodiment also provides a rubber strip 512 on the buoyancy bag 51 to reduce the impact force between the sealed transparent pipe 3 and the side wall of the cultivation pool 1.

[0067] like Figure 6 As shown, a gravity block 7 is also connected to the lower end of the sealed transparent pipe 3 through a pull rope 6, a non-glue area is provided at the center of the rubber particle surface 511, and the non-glue area forms a hollow groove 8 through which the pull rope 6 passes. A slot 9 is also provided at the center of the rubber strip 512, and a stopper 10 is provided at the upper end of the slot 9. The pull rope 6 passes through the slot 9, and the gravity block 7 is connected to the end of the pull rope 6. After the buoyancy bag 51 is inflated, the gravity block 7 moves up along the slot 9 due to the extrusion effect to ensure that the sealed transparent pipe 3 rotates around the wall-mounted pipe 2 through the installation circle.

[0068] Through the installation design of the gravity block 7 in this embodiment, when the buoyancy bag 51 is in a deflated state, the gravity block 7 moves down to the bottom of the sealed transparent pipe 3. At this time, the center of gravity of the sealed transparent pipe 3 is lower, and the sealed transparent pipe 3 is more stable and will not be affected by the water flow inside the cultivation pool 1.

[0069] When the buoyancy bag 51 is in an inflated state, the gravity block 7 moves up along the slot 9 to the upper end close to the sealed transparent pipe 3 under the action of the expanded buoyancy bag 51, and the length of the remaining pull rope 6 of the gravity block 7 is relatively low at this time. At this time, according to the lever principle, the stability of the sealed transparent pipe 3 when floating on the water surface is guaranteed, and it is convenient to directly rotate the sealed transparent pipe 3 along the wall-mounted pipe 2.

[0070] like Figure 5 and Figure 7As shown, since the wall-mounted pipe 2 moves up and down along the wall of the cultivation pool 1, in order to prevent the first-class branch pipes 541 and the second-class branch pipes 546 from being clamped between the wall-mounted pipe 2 and the wall of the cultivation pool 1 when the wall-mounted pipe 2 moves up and down, and to ensure that the surfaces of the first-class branch pipes 541 and the second-class branch pipes 546 will not be scratched, this embodiment is provided with a storage mechanism 11 for storing the first-class branch pipes 541 and the second-class branch pipes 546 at the edge of the cultivation pool 1. The storage mechanism 11 releases the first-class branch pipes 541 and the second-class branch pipes 546 when the wall-mounted pipe 2 sinks, so that the lengths of the first-class branch pipes 541 and the second-class branch pipes 546 meet the inflation and exhaust requirements. The storage mechanism 11 retracts the first-class branch pipes 541 and the second-class branch pipes 546 when the wall-mounted pipe 2 moves upward, so that the lengths of the first-class branch pipes 541 and the second-class branch pipes 546 meet the inflation and exhaust requirements.

[0071] The storage mechanism 11 includes a hollow groove 111 arranged at the edge of the cultivation pool 1, and a telescopic movable plate 112 arranged inside the hollow groove 111. The notch of the hollow groove 111 is trumpet-shaped. The inner side of the telescopic movable plate 112 is connected to the bottom of the hollow groove 111 by an elastic band 113. The outer side of the telescopic movable plate 112 is provided with a plurality of vertical through holes 114 with different directions. The opening diameters of the two ends of the vertical through hole 114 are larger than the middle through hole diameter of the vertical through hole 114. A type 1 branch pipe 541 and a type 2 branch pipe 546 pass through the vertical through hole 114.

[0072] The present embodiment also arranges a lighting strip encapsulated by a sealed transparent pipe in the middle position of the cultivation pond wall. The lighting strip is used to provide light for microalgae cultivation. Since there are many microorganisms breeding in the cultivation pond, the light transmittance of the sealed transparent pipe will decrease after a period of use. Therefore, the sealed transparent pipe of the present embodiment can move up and down along the wall of the cultivation pond by buoyancy, so that the sealed transparent pipe sinks to the inside of the cultivation pond to provide lighting that meets the photosynthesis requirements. The sealed transparent pipe moves up and is horizontally distributed on the surface of the cultivation pond to facilitate the cleaning of the sealed transparent pipe and ensure the light transmittance of the sealed transparent pipe, so as to improve the carbon fixation effect of the entire cultivation pond.

[0073] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A carbon neutral microalgae cultivation device, characterized in that: The invention comprises a downwardly sloping cultivation pool (1), and a wall-mounted pipe (2) arranged in the middle of the wall of the cultivation pool (1), wherein a plurality of sealed transparent pipes (3) are movably arranged on the wall-mounted pipe (2), and each of the sealed transparent pipes (3) is provided with a lighting strip (12) for supplementing light for the cultivation pool (1) to perform photosynthesis; The wall-mounted pipe (2) is provided with a plurality of evenly distributed main lifting and lowering control mechanisms (4), and a plurality of adjacent sealed transparent pipes (3) are provided with auxiliary buoyancy control mechanisms (5), the auxiliary buoyancy control mechanisms (5) replenishing carbon dioxide for the cultivation pool (1) to perform photosynthesis, and the main lifting and lowering control mechanisms (4) and the auxiliary buoyancy control mechanisms (5) share the same inflation and exhaust unit; The main lifting and lowering control mechanism (4) drives the wall-mounted pipe (2) to float on the surface of the water in the cultivation pool (1) through an inflation operation, and the inflated auxiliary buoyancy control mechanism (5) drives the sealed transparent pipe (3) to rotate around the wall-mounted pipe (2), so that the sealed transparent pipe (3) floats on the surface of the water in the cultivation pool (1); The wall-mounted pipe (2) sinks along the wall of the cultivation pool (1) to the inside of the cultivation pool (1) after the main lifting and regulating mechanism (4) exhausts air, and the sealed transparent pipe (3) is vertically distributed in the water body of the cultivation pool (1) after the auxiliary buoyancy regulating mechanism (5) exhausts air; The auxiliary buoyancy control mechanism (5) comprises a buoyancy bag (51) arranged on the side of the sealed transparent pipe (3) close to the wall of the cultivation pool (1), and all the buoyancy bags (51) are connected to an air-inflating and air-exhausting integrated machine (52). After the buoyancy bag (51) is evacuated, the sealed transparent pipe (3) is rotated in the water body of the cultivation pool (1) under the action of its own weight, and the sealed transparent pipe (3) is rotated to a vertical state with respect to the wall-mounted pipe (2) through a rotating ring (53). After the buoyancy bag (51) is inflated, the sealed transparent pipe (3) is rotated to the water surface of the cultivation pool (1) under the action of buoyancy, so as to clean the sealed transparent pipe (3); An inflation and exhaust hole (513) is provided at the upper end of the buoyancy bag (51), the inflation and exhaust hole (513) is connected to a multi-channel integrated pipeline (54), and the multi-channel integrated pipeline (54) is connected to an inflation and exhaust integrated machine (52); The wall-mounted pipe (2) is divided into a plurality of partitions, and the plurality of buoyancy bags (51) in each partition are connected to the same multi-channel integrated pipe (54) via the inflation and degassing holes (513), and the inflation and degassing integrated machine (52) simultaneously inflates and deflates the plurality of buoyancy bags (51) connected to the multi-channel integrated pipe (54); The multi-channel integrated pipeline (54) comprises a type of branch pipeline (541) connected to the inflation and exhaust holes (513), and a main pipeline (542) connected to the type of branch pipeline (541), the main pipeline (542) being connected to the pipeline of the inflation and exhaust integrated machine (52), the type of branch pipeline (541) being provided with a side air outlet (543), and the side air outlet (543) being provided with a second air valve (544), the type of branch pipeline (541) being provided with a first air valve (545) at the lower end of the second air valve (544), the second air valve (544) being used to fill air into the liquid in the cultivation pool (1), and the first air valve (545) being used to fill air into the buoyancy bag (51); The main lifting and regulating mechanism (4) comprises a reduction pipe (41) arranged at the center position of the wall-mounted pipe (2) in each partition, and an elastic shrink roll (42) is installed on the reduction pipe (41), and a telescopic air bag (43) is fixedly attached to the inner surface of the elastic shrink roll (42), and circular curved panels (44) parallel to the reduction pipe (41) are welded on the wall-mounted pipe (2) at both ends of the reduction pipe (41), and an open groove (45) is provided at the upper end of the circular curved panel (44), and the elastic shrink roll (42) is sealed in the space between the circular curved panel (44) and the reduction pipe (41); The circular curved panel (44) is provided with a perforation at one end of the elastic shrink roll (42), and the multi-channel integrated pipeline (54) is provided with a second type of branch pipeline (546), and the second type of branch pipeline (546) is sealed through the perforation and connected to the telescopic airbag (43), and a third air valve (547) is provided in the second type of branch pipeline (546), and the third air valve (547) is used to open or close the inflation and deflating operations of the telescopic airbag (43).

2. A carbon neutral microalgae cultivation device according to claim 1, characterized in that: The buoyancy bag (51) is provided with a rubber particle surface (511) for adhering to the sealed transparent pipe (3), and the buoyancy bag (51) is also provided with a rubber strip (512) for reducing the impact force between the sealed transparent pipe (3) and the side wall of the cultivation pool (1).

3. A carbon neutral microalgae cultivation device according to claim 2, characterized in that: The lower end of the sealed transparent pipe (3) is connected to a gravity block (7) via a drawstring (6); a glue-free area is provided at the center of the rubber particle surface (511); the glue-free area forms a hollow groove (8) through which the drawstring (6) passes; a slot groove (9) is also provided at the center of the rubber strip (512); a stopper (10) is provided at the upper end of the slot groove (9); the drawstring (6) passes through the slot groove (9); and the gravity block (7) is connected to the end of the drawstring (6); after the buoyancy bag (51) is inflated, the gravity block (7) moves upward along the slot groove (9) due to the squeezing effect, so as to ensure that the sealed transparent pipe (3) rotates around the wall-mounted pipe (2) via the rotating ring (53).

4. The carbon neutral microalgae cultivation device according to claim 1, characterized in that: A storage mechanism (11) for storing the first-class branch pipes (541) and the second-class branch pipes (546) is provided at the side of the cultivation pool (1); the storage mechanism (11) releases the first-class branch pipes (541) and the second-class branch pipes (546) when the wall-mounted pipe (2) sinks, so that the lengths of the first-class branch pipes (541) and the second-class branch pipes (546) meet the requirements of inflation and exhaust; and the storage mechanism (11) retracts the first-class branch pipes (541) and the second-class branch pipes (546) when the wall-mounted pipe (2) moves upward, so that the lengths of the first-class branch pipes (541) and the second-class branch pipes (546) meet the requirements of inflation and exhaust.

5. A carbon neutral microalgae cultivation device according to claim 4, characterized in that: The storage mechanism (11) comprises a hollow groove (111) arranged at the edge of the cultivation pool (1), and a telescopic movable plate (112) arranged inside the hollow groove (111); the notch of the hollow groove (111) is horn-shaped; the inner side of the telescopic movable plate (112) and the bottom of the hollow groove (111) are connected via an elastic band (113); the outer side of the telescopic movable plate (112) is provided with a plurality of vertical through holes (114) in different directions; the opening diameters of the two ends of the vertical through hole (114) are larger than the diameter of the middle through hole of the vertical through hole (114); the first branch pipe (541) and the second branch pipe (546) pass through the vertical through hole (114).

6. The carbon neutral microalgae cultivation device according to claim 1, characterized in that: The on / off regulation of the first air valve (545) and the third air valve (547) is the same, and the on / off regulation of the first air valve (545) and the third air valve (547) is opposite to the on / off regulation of the second air valve (544); when the first air valve (545) and the third air valve (547) are opened for inflation or degassing, the second air valve (544) is closed and temporarily does not work; when the first air valve (545) and the third air valve (547) are closed and temporarily does not work, the second air valve (544) is opened for inflation.

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