A highly stable lighting system for microalgae cultivation

Abstract

This application discloses a highly stable lighting system for microalgae cultivation, relating to the field of microalgae cultivation technology. The system provides a columnar lighting system with an outer tube surrounding a string of lights. Inside the outer tube is a tubular moving trolley, which uses a ring-shaped electromagnet to move an external cleaning component mounted on the outer tube. The external cleaning component is entirely a tube, with an annular soft bladder containing iron powder on its inner wall. During the movement of the moving trolley, the annular soft bladder on the inner wall of the external cleaning component deforms under magnetic influence and efficiently scrapes away adhering microalgae during its up-and-down movement. This achieves the technical effects of a highly stable lighting system for microalgae cultivation that is stable and reliable, possesses efficient self-cleaning function, is highly versatile, and allows for convenient cleaning.

Description

Technical Field

[0001] This invention relates to the field of microalgae cultivation technology, and in particular to a highly stable lighting system for microalgae cultivation. Background Technology

[0002] Microalgae have many advantages, such as fast growth rate, strong carbon fixation capacity, high photosynthetic efficiency, and high energy product yield. In existing technologies, large-scale use of microalgae cultivation systems can meet the needs of water treatment and carbon fixation.

[0003] The main devices used in microalgae cultivation systems are open devices and closed devices; open devices mainly include racetrack-type shallow water layer devices and curtain-type devices; closed devices mainly include column-type devices, cuboid-type devices, spherical-type devices and pipe-type devices.

[0004] Microalgae are photoautotrophic organisms that are highly sensitive to parameters such as light intensity during their growth. To improve the efficiency of microalgae cultivation, existing technologies, whether open or closed systems, generally place light-emitting tubes (lighting systems) inside the algal solution to fully utilize light energy. However, due to competition for nutrients and light, microalgae tend to adhere to the tubes, reducing the light reaching the algal solution and thus affecting algal cell growth and reproduction. To ensure the stability of the lighting system, the adherent microalgae need to be cleaned regularly. The cleaning process is costly, time-consuming, and tedious, severely impacting the continuity and stability of microalgae cultivation.

[0005] Therefore, a stable and reliable, highly self-cleaning, versatile, and easily cleanable high-stability lighting system for microalgae cultivation is needed. Summary of the Invention

[0006] This application provides a highly stable lighting system for microalgae cultivation, which solves the technical problems of severe microalgae adhesion, poor stability in function, inability to self-clean, and cumbersome and time-consuming cleaning processes in existing microalgae cultivation lighting systems. It achieves the technical effects of a highly stable lighting system for microalgae cultivation that is stable and reliable, has efficient self-cleaning function, is highly versatile, and can be easily cleaned.

[0007] This application provides a highly stable lighting system for microalgae cultivation, including a top block, a bottom plate, an outer tube, a light string assembly, an inner sliding assembly, and an outer cleaning assembly;

[0008] The outer tube is a transparent soft or hard round tube, with both ends fixed to the top block and the bottom plate respectively, and is closed by the top block and the bottom plate;

[0009] The light string assembly includes a light string consisting of a string of light tubes and a transparent outer tube fitted over the light string (110); both ends of the light string and the outer tube are fixed to the top block and the bottom plate, respectively.

[0010] The main body of the inner sliding assembly is a tubular moving trolley, whose wheels abut against the inner wall of the outer tube and slide along the length of the outer tube; the inner sliding assembly includes a magnetic ring that is an electromagnet, and the gap between the periphery of the magnetic ring and the inner wall of the outer tube is uniform.

[0011] The external cleaning component is a cylindrical structure that fits onto the outer tube. The external cleaning component includes a rubber ring-shaped abutment scraper. Under magnetic attraction, the abutment scraper adheres tightly to the outer tube and scrapes away the attached microalgae as it moves.

[0012] Furthermore, the inner sliding assembly also includes an inner carrier tube, an annular carrier plate, an abutment wheel assembly, and a spring wire;

[0013] The bottom of the top block is provided with a storage groove for accommodating the spring wire;

[0014] The opening of the storage slot faces downward and is a cylindrical slot; the inner carrier tube is a circular tube ring that is sleeved on the light string assembly and serves to support and bear loads.

[0015] The annular carrier plate is a cylindrical ring, with its inner wall fixed to the outer wall of the inner carrier tube by a rigid bracket, and coaxial with the inner carrier tube;

[0016] The annular carrier plate is used to support the contact wheel assembly and the magnetic ring.

[0017] The main body of the abutting wheel assembly is a cylindrical wheel made of rubber, and there are multiple of them, which are positioned on the outer wall of the annular carrier plate.

[0018] The spring wire is a spring-shaped power wire, with its top positioned inside the storage slot and connected to the power transmission line.

[0019] The inner ring of the magnetic ring is fixed to the outer ring of the annular carrier plate.

[0020] Furthermore, the external cleaning assembly includes an external carrier tube, a limiting wheel, and an abutment scraper;

[0021] The outer carrier tube is a circular tubular ring;

[0022] The limiting wheels are positioned at the top or bottom of the outer tube by a rigid bracket, are evenly distributed on the outer tube, and are cylindrical in shape with their sidewalls abutting against the outer wall of the outer tube.

[0023] The resisting scraper includes an annular soft capsule and an annular scraper;

[0024] The annular soft capsule is an elastic rubber annular capsule filled with iron powder, with its outer ring tightly attached to and fixed to the inner wall of the outer carrier tube.

[0025] The annular scraper is a ring-shaped plate made of rubber, with a triangular or trapezoidal longitudinal section, and its outer ring is tightly attached to and fixed to the inner ring of the annular soft bladder.

[0026] Preferably, both the outer tube and the outer sleeve are flexible tubes, which can be more easily placed into different types of containers, thus better adapting to various containers for microalgae cultivation.

[0027] Preferably, a plurality of abutting scrapers are positioned on the outer carrier tube, and the plurality of abutting scrapers are arranged in a row;

[0028] The outer tube body is provided with an upper retaining ring near the top and a lower retaining ring near the bottom.

[0029] Both the upper and lower retaining rings are rigid rings, and are located more than 20 centimeters away from the end of the outer tube.

[0030] During the movement of the inner sliding component, when the outer cleaning component is restricted from moving due to contact with the upper and lower retaining rings, the inner sliding component is controlled to continue moving, thereby changing the object being scraped by the magnetic suction ring.

[0031] Preferably, the external cleaning component is fixed with multiple external agitators; the external agitators are long strip-shaped rigid plates or rods, one end of which is fixed to the outer side wall of the outer carrier tube, and are evenly distributed around the periphery of the external cleaning component in a radial arrangement; when the external cleaning component moves up and down, the external agitators agitate the algal solution, thereby improving the efficiency of microalgae cultivation.

[0032] Preferably, the number of magnetic rings on the annular carrier plate is three, arranged in a row, with a spacing of less than 2 cm between them;

[0033] The number of abutting scrapers on the external cleaning component is one;

[0034] Normally, the magnetic ring in the middle attracts the scraping object. At this time, controlling whether one of the other two magnetic rings is energized and the strength of the magnetic force can control the tilt angle of the scraping object, thereby obtaining different scraping effects.

[0035] Preferably, the outer carrier tube includes a base ring and a rotating tube;

[0036] Both the base ring and the rotating tube are circular tubular rings and are coaxial with each other. The rotating tube is tightly attached to one end of the base ring and rotates around its own axis and is connected to the base ring.

[0037] The limiting wheels are all positioned on the base ring; the abutting scrapers are all positioned on the rotating tube;

[0038] The external agitator is blade-shaped;

[0039] During the up-and-down movement of the external cleaning component, the external agitator drives the rotating tube to rotate due to the resistance of the algae solution.

[0040] Preferably, the inner sliding assembly further includes an adsorption ring;

[0041] The external cleaning component also includes a corresponding ring;

[0042] The adsorption ring is an electromagnet ring, and it is arranged in a row with the magnetic attraction ring;

[0043] When the outer tube is placed vertically, the adsorption ring is located at the bottom of the magnetic ring and the distance between the two is greater than 5 cm;

[0044] The corresponding ring is a hard ring made of ferromagnetic material, with the outer ring fixed on the inner wall of the rotating tube and arranged in a row with the scraping body;

[0045] When the outer tube is placed vertically, the corresponding ring is located at the bottom of the contact scraper and the distance between the two is greater than 5 cm; when the magnetic ring attracts the contact scraper, the adsorption ring attracts the corresponding ring; when no scraping or cleaning is required and only stirring is needed, the magnetic ring is de-energized and the adsorption ring is energized.

[0046] Preferably, it also includes an external clip;

[0047] The outer surface of the outer tube is provided with multiple layers of outer covering tubes;

[0048] The outer clamp is fixed to the outer wall of the outer carrier tube;

[0049] The outer covering tube is a tubular transparent heat shrink tubing, and there are multiple layers of it wrapped around the outer tube body and tightly attached to the outer tube body.

[0050] A knife for cutting open the outer covering tube is positioned on the inner wall of the outer carrier tube. The knife is controlled by the control unit to automatically extend and retract, and can only cut open one layer of the outer covering tube at a time.

[0051] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0052] This invention provides a columnar lighting system in which an outer tube is fitted over a string of lights. Inside the outer tube is a tubular moving trolley, which uses a ring-shaped electromagnet to move an external cleaning component mounted on the outer tube. The external cleaning component is a tube with an annular soft bladder containing iron powder on its inner wall. During the movement of the moving trolley, the annular soft bladder on the inner wall of the external cleaning component deforms under the influence of magnetic force and efficiently scrapes away the adhering microalgae during its up-and-down movement. This effectively solves the technical problems of existing microalgae cultivation lighting systems, such as severe microalgae adhesion, poor stability, inability to self-clean, and cumbersome and time-consuming cleaning processes. Therefore, it achieves a highly stable lighting system for microalgae cultivation that is stable and reliable, has efficient self-cleaning function, is versatile, and allows for convenient cleaning. Attached Figure Description

[0053] Figure 1 This is a schematic diagram of the internal structure of the high-stability lighting system for microalgae cultivation in this application.

[0054] Figure 2 This is a schematic diagram of the external structure of the high-stability lighting system for microalgae cultivation in this application.

[0055] Figure 3 This is a schematic diagram showing the positional relationship between the string light assembly, the top block, and the bottom plate.

[0056] Figure 4 This is a schematic diagram of the overall structure of the inner sliding component;

[0057] Figure 5 This is a schematic diagram of the cross-sectional structure of the inner sliding component;

[0058] Figure 6 This is a schematic diagram of the overall structure of the external cleaning component;

[0059] Figure 7 This is a schematic diagram of the cross-sectional structure of the external cleaning component;

[0060] Figure 8 A simplified diagram showing the positional relationship between the outer tube and the base frame;

[0061] Figure 9 This is a schematic diagram showing the positional relationship between the external agitator and the external carrier tube.

[0062] Figure 10 This is a schematic diagram showing the positional relationship between the outer cover tube and the outer tube body.

[0063] In the picture:

[0064] Top block 001, storage slot 010, base plate 002, outer tube body 003, power transmission line 004, upper retaining ring 005, lower retaining ring 006, base frame 007, outer covering tube 008, light string 110, outer sleeve tube 120, inner carrier tube 210, annular carrier plate 220, magnetic ring 230, adsorption ring 240, contact wheel assembly 250, rotating rod 251, rotating wheel body 252, spring wire 260, outer carrier tube 310, base ring 311, rotating tube 312, limiting wheel 320, outer clamp 330, annular soft bag 341, annular scraper 342, corresponding ring 350, outer agitator 360. Detailed Implementation

[0065] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0066] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0067] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0068] Example 1

[0069] like Figures 1 to 7 As shown, the high-stability lighting system for microalgae cultivation in this application includes a top block 001, a bottom plate 002, an outer tube 003, a light string assembly, an inner sliding assembly, an outer cleaning assembly, a power assembly, and a control unit.

[0070] The top block 001 is a rigid block, and a power transmission line 004 is positioned on the top. The power transmission line 004 is electrically connected to the light string assembly and the inner sliding assembly, and supplies power to the light string assembly and the inner sliding assembly.

[0071] The base plate 002 is a rigid plate that is fixed to the bottom of the outer tube 003 and serves to seal the outer tube 003.

[0072] like Figure 2As shown, the outer tube 003 is a transparent soft or hard round tube, with both ends fixed to the bottom of the top block 001 and the top of the bottom plate 002, respectively, and is closed by the top block 001 and the bottom plate 002.

[0073] The light string assembly serves as a light source and includes a light string 110 and an outer tube 120. The light string 110 is a string of light tubes, with both ends fixed to the center of the bottom of the top block 001 and the center of the top of the base plate 002, respectively, and electrically connected to the power transmission line 004. The outer tube 120 is a transparent tube that fits over the light string 110, with its inner wall close to the light string 110. Both ends are fixed to the top block 001 and the base plate 002, respectively, to prevent damage to the light string 110 when the inner sliding assembly moves.

[0074] Furthermore, the outer sleeve 120 and the outer tube body 003 are made of the same material.

[0075] The main body of the inner sliding component is a tubular mobile trolley, which is fitted onto the light string component. Its wheels abut against the inner wall of the outer tube 003, and a motor is installed on it (the motor is used to drive its wheels to rotate). Under the coordinated control of the control unit and the power component, it slides inside the outer tube 003 along the length direction of the outer tube 003.

[0076] like Figure 4 and Figure 5 As shown, the inner sliding assembly includes a magnetic ring 230; the magnetic ring 230 is a ring electromagnet, the edge of which is less than two centimeters from the inner wall of the outer tube 003 and the gap between it and the inner wall of the outer tube 003 is uniform, and it is powered on and off under the control of the control unit.

[0077] Furthermore, the inner sliding assembly also includes an inner carrier tube 210, an annular carrier plate 220, an abutment wheel assembly 250, and a spring wire 260; the bottom of the top block 001 is provided with a storage groove 010 for accommodating the spring wire 260; the opening of the storage groove 010 faces downward and is a cylindrical groove; the inner carrier tube 210 is a cylindrical ring body, sleeved on the light string assembly, serving as a load-bearing and supporting element; the annular carrier plate 220 is a cylindrical ring body, the inner wall of which is fixed to the outer wall of the inner carrier tube 210 by a rigid bracket (plate-shaped, plate-shaped, or frame structure bracket), and is coaxial with the inner carrier tube 210; the annular carrier plate 220 is used for load-bearing, supporting, and abutmenting elements. The wheel assembly 250 and the magnetic ring 230 are used. The main body of the abutting wheel assembly 250 is a cylindrical wheel made of rubber. There are multiple such wheels, which are positioned on the outer wall of the annular carrier plate 220. They are always in contact with the inner wall of the outer tube 003 and rotate under the coordinated control of the power assembly and the control unit, thereby driving the entire inner sliding assembly to move smoothly within the outer tube 003. The spring wire 260 is a spring-shaped power wire. The top is positioned in the storage groove 010 and connected to the power transmission line 004. The bottom is positioned on the inner carrier tube 210 and is used to supply power for the operation of the inner sliding assembly. The inner ring of the magnetic ring 230 is fixed on the outer ring of the annular carrier plate 220.

[0078] Furthermore, the abutting wheel assembly 250 includes a rotating rod 251 and a rotating wheel body 252; the rotating rod 251 is a rigid rod, one end of which is rotatably connected to the outer wall of the annular carrier plate 220, and the axial direction of the rotating shaft is perpendicular to the axial direction of the annular carrier plate 220; the rotating wheel body 252 is a cylindrical rubber wheel, which is rotatably connected to the other end of the rotating rod 251 around its own axis; the axial direction of the rotating wheel body 252 is perpendicular to the axial direction of the annular carrier plate 220; a torsion spring is positioned at the connection position between the rotating rod 251 and the annular carrier plate 220, and the presence of the torsion spring ensures that the rotating wheel body 252 always abuts against and compresses the inner wall of the outer tube 003.

[0079] Furthermore, there are six abutment wheel assemblies 250 in two groups of three each, arranged symmetrically. The presence of the six abutment wheel assemblies 250 ensures that the gap between the top and bottom edges of the annular carrier plate 220 and the outer tube 003 remains uniform.

[0080] like Figure 6 and Figure 7 As shown, the external cleaning component is a cylindrical structure, which is sleeved on the outer tube 003 and moves with the movement of the inner sliding component under the magnetic force of the inner sliding component.

[0081] The external cleaning assembly includes an external carrier tube 310, a limiting wheel 320, and an anti-scraping body;

[0082] The outer carrier tube 310 is a cylindrical ring that serves as a load-bearing and supporting element. The difference between the inner diameter and the outer tube 003 diameter is less than 3 cm. The limiting wheels 320 are positioned at the top or bottom of the outer carrier tube 310 by a rigid bracket. They are evenly distributed on the outer carrier tube 310, are cylindrical, and have their rotation axis perpendicular to the length direction of the outer tube 003. Their sidewalls abut against the outer wall of the outer tube 003. The presence of the limiting wheels 320 ensures a uniform gap between the inner wall of the outer carrier tube 310 and the outer wall of the outer tube 003.

[0083] The abutment scraper is used to deform under the influence of magnetic force and abut against the outer wall of the outer tube 003 to remove the wall-adhering microalgae on the outer wall of the outer tube 003. It includes an annular soft bladder 341 and an annular scraper 342. The annular soft bladder 341 is an elastic rubber annular bladder filled with iron powder, and its outer ring is tightly attached to and fixed to the inner wall of the outer carrier tube 310. The annular scraper 342 is a rubber annular plate with a triangular or trapezoidal longitudinal section, and its outer ring is tightly attached to and fixed to the inner ring of the annular soft bladder 341. When the annular soft bladder 341 deforms under the influence of magnetic force, the annular soft bladder 341 deforms accordingly.

[0084] A lower retaining ring 006 is fixed on the side wall of the outer tube 003 near the bottom plate 002; the lower retaining ring 006 is a rigid ring used to prevent the external cleaning component from detaching from the outer tube 003.

[0085] The power component is used to provide power for the operation of each component of the high-stability light system for microalgae cultivation in this application, and the control unit plays the role of controlling the coordinated operation of each component of the high-stability light system for microalgae cultivation. Both are existing technologies and will not be described in detail here.

[0086] Preferably, the control unit is a combination of a programmable logic controller and control buttons.

[0087] When using the high-stability lighting system for microalgae cultivation in this embodiment of the application: it can be fixed in either an open or closed microalgae cultivation system as needed. When fixing, the top block 001 is fixed with a bracket, and it can be placed vertically or at an angle. The magnetic ring 230 is periodically energized to attract the resist scraper, causing it to deform and stick tightly to the inner wall of the outer tube 003, and the resist scraper is moved to scrape off the attached microalgae.

[0088] Preferably, when the illumination system of this application is used, the frequent changes in the magnetic force of the magnetic ring 230 can achieve the effect of shaking the scraping body, thereby quickly shaking off the adhered microalgae.

[0089] Preferably, if this application is used in an open microalgae cultivation system (open bioreactor), after long-term use, the entire system of this application can be periodically pulled out for more detailed cleaning.

[0090] Preferred, such as Figure 8 As shown, both the outer tube 003 and the outer sleeve 120 are flexible tubes, which can be more conveniently placed into different types of containers, thus better adapting to various containers for microalgae cultivation.

[0091] Furthermore, to avoid frictional damage to the outer sleeve 120 when the inner carrier tube 210 moves, a rubber tube is fixed on the inner wall of the inner carrier tube 210; the rubber tube is made of rubber and its outer wall is tightly attached to the inner wall of the inner carrier tube 210.

[0092] Preferably, the bottom of the base plate 002 is positioned with a base frame 007, which is a frame structure that serves to support the base plate 002 and the outer tube 003. In use, the base frame 007 can be used with the microalgae culture container (by fixing it to the bottom or side wall of the microalgae culture container) to realize the vertical, oblique, horizontal or even bent setting of the soft outer tube 003.

[0093] Preferably, the outer carrier tube 310 has multiple abutment scrapers positioned on it, and the multiple abutment scrapers are arranged in a row; the outer tube body 003 has an upper retaining ring 005 positioned near the top and a lower retaining ring 006 positioned near the bottom; both the upper retaining ring 005 and the lower retaining ring 006 are rigid rings, and are more than 20 cm away from the end of the outer tube body 003; during the movement of the inner sliding component, when the outer cleaning component is restricted from moving due to abutment against the upper retaining ring 005 and the lower retaining ring 006, the inner sliding component is controlled to continue moving, thereby changing the abutment scrapers attracted by the magnetic ring 230.

[0094] Preferably, the annular scraper 342 with different abutment scrapers has different materials and hardness, and different abutment scrapers can achieve different cleaning effects.

[0095] Preferably, providing multiple opposing scraping elements can extend the service life of the external cleaning components and reduce their maintenance cycle.

[0096] Preferably, the external cleaning component is fixed with a plurality of external agitators 360; the external agitators 360 are long strip-shaped rigid plates or rods, one end of which is fixed to the outer side wall of the outer carrier tube 310, and are evenly distributed around the periphery of the external cleaning component in a radial arrangement; when the external cleaning component moves up and down, the external agitators 360 play a role in agitating the algal solution and thereby improving the microalgae cultivation efficiency.

[0097] Preferably, the external agitator 360 is a rigid rod or plate.

[0098] Preferably, the external agitator 360 is a soft rod or plate.

[0099] Preferably, in order to increase the agitation of the algal liquid caused by the external agitator 360, the external agitator 360 is densely covered with holes.

[0100] Preferably, the holes on the external agitator 360 are all through holes of different sizes.

[0101] Preferably, the number of magnetic rings 230 on the annular carrier plate 220 is three, arranged in a row, with a spacing of less than 2 cm between them; the number of abutting scrapers on the external cleaning component is one; under normal conditions, the magnetic ring 230 in the middle attracts the abutting scraper, and at this time, controlling whether one of the other two magnetic rings 230 is energized and the magnitude of the magnetic force can control the tilt angle of the abutting scraper, thereby obtaining different scraping effects.

[0102] Preferably, the top of the top block 001 and the bottom of the bottom plate 002 of different microalgae cultivation lighting systems can be spliced ​​and fixed together, and the circuit of the spliced ​​microalgae cultivation lighting system can be connected after splicing; in use, microalgae cultivation lighting systems of different lengths can be spliced ​​together as needed.

[0103] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0104] This invention solves the technical problems of existing microalgae cultivation lighting systems, such as severe microalgae adhesion issues, poor stability in function, inability to self-clean, and cumbersome and time-consuming cleaning processes. It achieves a highly stable lighting system for microalgae cultivation that is stable and reliable, has efficient self-cleaning capabilities, is highly versatile, and can be easily cleaned.

[0105] Example 2

[0106] Considering that after prolonged periods of oblique, horizontal, or twisted placement of the outer tube 003, the weight of the external cleaning components will cause more severe wear on certain parts of the annular scraper 342 compared to other parts (resulting in wear differences), thus affecting the cleaning effect and the maintenance and replacement cycle of the annular scraper 342; to address the above problems, this application embodiment optimizes and improves the structure of the external agitator 360 and the structure of the outer carrier tube 310 based on the above embodiment in order to balance wear and extend the service life of the agitator scraper, specifically as follows:

[0107] The outer carrier tube 310 includes a base ring 311 and a rotating tube 312;

[0108] Both the base ring 311 and the rotating tube 312 are circular tubular rings and are coaxial with each other. The rotating tube 312 is closely attached to one end of the base ring 311 and is rotatably connected to the base ring 311 around its own axis.

[0109] The limiting wheels 320 are all positioned on the base ring 311; the abutting scrapers are all positioned on the rotating tube 312;

[0110] like Figure 9 As shown, the external agitator 360 is blade-shaped;

[0111] During the up-and-down movement of the external cleaning component, the external agitator 360 drives the rotating tube 312 to rotate under the action of the algae liquid resistance.

[0112] Preferably, to improve the stability of the external cleaning component during movement, increase the adsorption effect of the inner sliding component on the external cleaning component, and enable the external cleaning component to stir the algae solution along the outer tube 003 even without scraping or cleaning the attached microalgae; the inner sliding component further includes an adsorption ring 240; the external cleaning component further includes a corresponding ring 350; the adsorption ring 240 is an electromagnet ring and is arranged in a row with the magnetic ring 230; when the outer tube 003 is vertical, the adsorption ring 240 is located at the magnetic ring 230. The bottom of the 30 and the distance between the two is greater than 5 cm; the corresponding ring 350 is a hard ring made of ferromagnetic material, the outer ring is fixed on the inner side wall of the rotating tube 312, and is arranged in a row with the contact scraping body; when the outer tube 003 is vertical, the corresponding ring 350 is located at the bottom of the contact scraping body and the distance between the two is greater than 5 cm; when the magnetic ring 230 attracts the contact scraping body, the adsorption ring 240 attracts the corresponding ring 350; when no scraping cleaning is required and only stirring is needed, the magnetic ring 230 is de-energized and the adsorption ring 240 is energized.

[0113] Example 3

[0114] Considering that the illumination system of this application needs to be removed for deep cleaning of the outer tube 003 after long-term or even ultra-long-term use to maintain the illumination effect; and to further improve the ease of use and cleaning of the illumination system for microalgae cultivation, this embodiment adds an outer clamp 330 to the side wall of the outer carrier tube 310 and adds multiple layers of outer covering tubes 008 to the outer surface of the outer tube 003; when deep cleaning is required, the outermost outer covering tube 008 is peeled off with the assistance of the outer clamp 330 to maintain the cleanliness of the outer tube 003, specifically as follows:

[0115] The outer clamp 330 is a manual or electric clamp, fixed to the outer side wall of the outer carrier tube 310.

[0116] like Figure 10 As shown, the outer tube 008 is a tubular transparent heat shrink tubing, and there are multiple of them, which are wrapped in multiple layers on the outer tube body 003 and are tightly attached to the outer tube body 003.

[0117] A knife for cutting open the outer covering tube 008 is positioned on the inner wall of the outer carrier tube 310. The knife is controlled by the control unit to automatically extend and retract and can only cut open one layer of the outer covering tube 008 at a time.

[0118] After the illumination system of this application has been used for a long time, the blade on the outer tube 310 can be controlled to cut open one layer of outer cover tube 008. After that, the operator can remove the outermost outer cover tube 008. During the removal process, the top of the outermost outer cover tube 008 can be manually torn open to separate it from the other outer cover tubes 008. Then, the corners of the outermost outer cover tube 008 are fixed on the outer clamp 330, and the outermost outer cover tube 008 is torn open by the movement of the outer cleaning component.

[0119] Preferably, when all the outer covering tubes 008 on the outer tube body 003 are about to be used up or have been completely used up, a new outer covering tube 008 can be added to the outer tube body 003 (the covering process involves heating it after putting it on to cause it to shrink).

[0120] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A highly stable lighting system for microalgae cultivation, characterized in that: Includes top block (001), bottom plate (002), outer tube (003), light string assembly, inner sliding assembly, and outer cleaning assembly; The outer tube (003) is a transparent soft or hard round tube, with both ends fixed to the top block (001) and the bottom plate (002) respectively, and is closed by the top block (001) and the bottom plate (002); The light string assembly includes a light string (110) consisting of a string of light tubes and a transparent outer tube (120) fitted over the light string (110); both ends of the light string (110) and the outer tube (120) are respectively fixed to the top block (001) and the bottom plate (002); The main body of the inner sliding component is a tubular moving trolley, whose wheels abut against the inner wall of the outer tube (003) and slide along the length of the outer tube (003); the inner sliding component includes a magnetic ring (230) that is an electromagnet, and the gap between the periphery of the magnetic ring (230) and the inner wall of the outer tube (003) is uniform. The external cleaning component is a cylindrical structure that is fitted onto the outer tube (003). The external cleaning component includes a rubber ring-shaped abutment scraper. The abutment scraper adheres tightly to the outer tube (003) under magnetic attraction and then scrapes off the attached microalgae as it moves. The inner sliding assembly also includes an inner carrier tube (210), an annular carrier plate (220), an abutment wheel assembly (250), and a spring wire (260); The bottom of the top block (001) is provided with a storage groove (010) for accommodating the spring wire (260); The opening of the storage slot (010) faces downward and is a cylindrical slot; the inner carrier tube (210) is a circular tube ring that is sleeved on the light string assembly and serves to support and bear loads. The annular carrier plate (220) is a cylindrical ring, and its inner wall is fixed to the outer wall of the inner carrier tube (210) by a rigid bracket, and is coaxial with the inner carrier tube (210); The annular carrier plate (220) is used to support the abutment wheel assembly (250) and the magnetic ring (230); The main body of the abutting wheel assembly (250) is a cylindrical wheel made of rubber, and there are multiple of them, which are positioned on the outer side wall of the annular carrier plate (220). The spring wire (260) is a spring-shaped power wire, with its top positioned in the storage slot (010) and connected to the power transmission line (004); The inner ring of the magnetic ring (230) is fixed on the outer ring of the annular carrier plate (220); The external cleaning assembly includes an external carrier tube (310), a limiting wheel (320), and an abutment scraper; The outer carrier tube (310) is a circular tube-shaped ring; The limiting wheel (320) is positioned at the top or bottom of the outer carrier tube (310) by a rigid bracket, and is evenly distributed on the outer carrier tube (310). It is a cylindrical wheel body that abuts against the outer wall of the outer tube body (003). The resisting scraper includes an annular soft capsule (341) and an annular scraper (342); The annular soft capsule (341) is an elastic rubber annular capsule filled with iron powder, with its outer ring tightly attached to and fixed to the inner wall of the outer carrier tube (310). The annular scraper (342) is a rubber ring-shaped plate with a triangular or trapezoidal longitudinal section, and its outer ring is tightly attached to and fixed on the inner ring of the annular soft bag (341).

2. The high-stability lighting system for microalgae cultivation as described in claim 1, characterized in that: Both the outer tube (003) and the outer sleeve (120) are flexible tubes, which can be more conveniently placed into different types of containers, thus better adapting to various containers for microalgae cultivation.

3. The high-stability lighting system for microalgae cultivation as described in claim 1, characterized in that: Multiple abutment scrapers are positioned on the outer carrier tube (310), and the multiple abutment scrapers are arranged in a row; The outer tube body (003) has an upper retaining ring (005) positioned near the top and a lower retaining ring (006) positioned near the bottom; Both the upper retaining ring (005) and the lower retaining ring (006) are rigid rings, and are more than 20 cm away from the end of the outer tube (003); During the movement of the inner sliding component, when the outer cleaning component is restricted from moving due to contact with the upper retaining ring (005) and the lower retaining ring (006), the inner sliding component is controlled to continue moving, thereby changing the contact scraping body adsorbed by the magnetic suction ring (230).

4. The high-stability lighting system for microalgae cultivation as described in claim 1, characterized in that: Multiple external agitators (360) are fixed on the external cleaning component; the external agitators (360) are long strip-shaped hard plates or rods, one end of which is fixed on the outer side wall of the outer carrier tube (310), and are evenly distributed around the periphery of the external cleaning component in a radial arrangement; when the external cleaning component moves up and down, the external agitators (360) play a role in agitating the algal solution and thereby improving the microalgae cultivation efficiency.

5. The high-stability lighting system for microalgae cultivation as described in claim 1, characterized in that: The number of magnetic rings (230) on the annular carrier plate (220) is three, arranged in a row, with a spacing of less than 2 cm between them; The number of abutting scrapers on the external cleaning component is one; Normally, the magnetic ring (230) in the middle attracts the object to be scraped. At this time, controlling whether one of the other two magnetic rings (230) is energized and the magnitude of the magnetic force can control the tilt angle of the object to be scraped, thereby obtaining different scraping effects.

6. The high-stability lighting system for microalgae cultivation as described in claim 4, characterized in that: The outer carrier tube (310) includes a base ring (311) and a rotating tube (312); The base ring (311) and the rotating tube (312) are both circular tubular rings and are coaxial with each other. The rotating tube (312) is attached to one end of the base ring (311) and rotates around its own axis and is connected to the base ring (311). The limiting wheels (320) are all positioned on the base ring (311); the abutting scrapers are all positioned on the rotating tube (312); The external agitator (360) is blade-shaped; During the up-and-down movement of the external cleaning component, under the action of the algae liquid resistance, the external agitator (360) drives the rotating tube (312) to rotate.

7. The high-stability lighting system for microalgae cultivation as described in claim 6, characterized in that: The inner sliding assembly also includes an adsorption ring (240); The external cleaning component also includes a corresponding ring (350); The adsorption ring (240) is an electromagnet ring and is arranged in a row with the magnetic attraction ring (230); When the outer tube (003) is placed vertically, the adsorption ring (240) is located at the bottom of the magnetic ring (230) and the distance between the two is greater than 5 cm; The corresponding ring (350) is a hard ring made of ferromagnetic material. The outer ring is fixed on the inner wall of the rotating tube (312) and arranged in a row with the scraping body. When the outer tube (003) is placed vertically, the corresponding ring (350) is located at the bottom of the contact scraper and the distance between the two is greater than 5 cm; when the magnetic ring (230) attracts the contact scraper, the adsorption ring (240) attracts the corresponding ring (350); when no scraping or cleaning is required but stirring is needed, the magnetic ring (230) is de-energized and the adsorption ring (240) is energized.

8. The high-stability lighting system for microalgae cultivation as described in claim 1, characterized in that: It also includes an external clip (330); The outer surface of the outer tube (003) is provided with multiple layers of outer covering tubes (008); The outer clamp (330) is fixed to the outer side wall of the outer carrier tube (310); The outer tube (008) is a tubular transparent heat shrink tube, and there are multiple tubes, which are wrapped around the outer tube body (003) in multiple layers and are tightly attached to the outer tube body (003); A knife for cutting open the outer covering tube (008) is positioned on the inner wall of the outer carrying tube (310). The knife is controlled by the control unit to automatically extend and retract and can only cut open one layer of the outer covering tube (008) at a time.

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