Submerged plant growth auxiliary device

Abstract

The invention discloses a submerged plant growth assisting device. The submerged plant growth assisting device comprises a splicable floating frame shading assembly, a light guide assembly and an intelligent algae removal module. The shading assembly is of a magnetic attraction or sleeve type splicing structure, duckweed can be fixed in the containing space of the shading assembly to form a surface shading layer, and breeding of floating algae is restrained. The light guide assemblies are connected through vertical sliding rails, a light-transmitting plate is arranged at the lower end for directionally supplementing light for submerged plants, and light dissipation is reduced through the peripheral wall shading design. The innovation point is that floating plants are used for shading to improve the light transmission of the water body; the intelligent attached algae removing module is arranged, so that the light supplementing efficiency of the light guide pipe on the submerged plants is greatly improved, and the survival rate of the submerged plants is remarkably improved. The shading depth is controlled through the adjusting assembly, surface growth of phytoplankton is limited, and the light guide efficiency is kept in cooperation with the algae removal device. The device optimizes underwater light field distribution, supports rapid deployment of a wide water area through modular design, and can be suitable for a large-area submerged vegetation recovery engineering project.

Description

Technical Field

[0001] The present invention relates to the technical field of plant production auxiliary devices, and in particular to a submerged plant growth auxiliary device. Background Art

[0002] Submerged vegetation is a key unit of the ecosystem structure and stability of shallow lakes, and its coverage is a comprehensive indicator of the ecological health of shallow lakes. Submerged plants can create a clear water state with lush aquatic plants by reducing sediment resuspension and absorbing nutrients. If submerged vegetation disappears, the water ecosystem will degenerate and the lake will turn into a turbid state dominated by phytoplankton.

[0003] However, the loss of submerged plants is widespread, mainly due to the eutrophication of lakes and the proliferation of phytoplankton in water bodies. Phytoplankton blocks the light needed for the growth of submerged plants and also robs them of the inorganic carbon sources needed for their growth, which has a negative impact on urban landscapes, residents' living experience, and the ecological environment. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a submerged plant growth assisting device that can inhibit the growth of phytoplankton, increase the light exposure of submerged plants, and improve the survival rate of submerged plants.

[0005] According to an embodiment of the present invention, a submerged plant growth assist device includes a light-shielding assembly, a light-guiding assembly, an algae removal device, and a counterweight. The light-shielding assembly is provided with a first guide hole, and a connecting mechanism is provided at the edge of the light-shielding assembly. Two light-shielding assemblies can be connected via the connecting mechanism. The light-shielding assembly is provided with a plurality of accommodating spaces, which are used to load duckweed and use the duckweed to block light. The light-shielding assembly is used to float on the water surface. The light-guiding assembly is vertically slidably connected to the first guide hole, and the lower end of the light-guiding assembly protrudes downward from the first guide hole. The light-guiding assembly can float on the water surface. The upper end of the light-guiding assembly is used to guide light, and the peripheral wall of the light-guiding assembly blocks light. The lower end of the light-guiding assembly is used to provide light to the submerged plants. The algae removal device is provided on the light-guiding assembly and is used to remove algae attached to the lower end of the light-guiding assembly. The counterweight is connected to the lower end of the light-guiding assembly and is used to drag the light-guiding assembly downward.

[0006] It has at least the following beneficial effects: The shading component provided in the device shades the phytoplankton under the water surface and uses the accommodating space to restrain duckweed; duckweed is a floating plant, its leaves float on the water surface, shading the water body and thus inhibiting the growth of phytoplankton, and its roots grow in the water body and can efficiently absorb inorganic carbon, nitrogen and phosphorus in the water body to limit the growth of phytoplankton; the device will change the distribution of the underwater light field, that is, limit the growth of phytoplankton in the water body through duckweed, and improve the light transmittance of the water body; then introduce sunlight into the lower layer of the water body through the light guide tube to meet the sinking The light required for the growth of aquatic plants (because submerged plants can obtain inorganic nutrients from the bottom mud and escape the nutrient restriction caused by duckweed); the device realizes the splicing of multiple light-shielding components by setting the connecting mechanism, realizes light-shielding treatment of a wide area of water surface, and is easy to produce and carry. In addition, the accommodating space restrains the duckweed to prevent the duckweed from leaking out. The algae removal device is set to remove the algae attached to the bottom of the light guide tube to prevent the growth of the attached algae from weakening the guide efficiency of the light guide tube, so that the light guide component can better provide light for the submerged plants.

[0007] According to some embodiments of the present invention, the shading assembly includes a frame and a shading net, the shading net is arranged in the accommodating space of the frame, the first guide hole is arranged in the frame, and the connecting mechanism is arranged on the outer frame of the frame. The shading assembly has a simple structure and is easy to lay.

[0008] According to some embodiments of the present invention, the frame is constructed of square tubes or round tubes, the first guide hole is arranged in the middle of the frame, the frame is arranged as a rectangular frame, the four sides of the rectangular frame are all provided with the connecting mechanism, and the rectangular frame is convenient for splicing.

[0009] According to some embodiments of the present invention, the connecting mechanism is a magnet, and the magnets are embedded in the four frames of the rectangular frame. The magnets are used to connect two adjacent frames. The magnet adsorption-type splicing achieves fast and stable connection, and is also more convenient when dismantling.

[0010] According to some embodiments of the present invention, the algae removal device includes a connecting frame, a light-transmitting folding film, a crank slider mechanism, a bracket and a wind wheel. The connecting frame is connected to the lower end of the light-guiding assembly, one end of the light-transmitting folding film is connected to one end of the connecting frame, and the other end of the light-transmitting folding film is slidably connected to the connecting frame. The crank slider mechanism, the follower is connected to the other end of the light-transmitting folding film, and the crank slider mechanism is used to drive the light-transmitting folding film to contract or extend. The bracket is connected to the frame, and the wind wheel is rotatably connected to the bracket. The wind wheel is connected to the active part of the crank slider mechanism through a chain drive, and the wind wheel is used to drive the active part of the crank slider mechanism to rotate, and the active part of the crank slider mechanism is used to drive the follower of the crank slider mechanism to reciprocate along a straight line.

[0011] According to some embodiments of the present invention, the algae removal device includes an ultrasonic exciter, a control module, and a photovoltaic panel. The ultrasonic exciter is disposed at the lower end of the light guide assembly, the control module is disposed on the frame, and the photovoltaic panel is disposed on the frame. The photovoltaic panel and the ultrasonic exciter are both electrically connected to the control module. The photovoltaic panel is used to power the ultrasonic exciter, and the control module is used to control the vibration frequency of the ultrasonic exciter.

[0012] According to some embodiments of the present invention, the light guide assembly includes a light guide tube, a light condenser and a light-transmitting plate. The upper and lower ends of the light guide tube are both opened, the outer peripheral wall of the light guide tube is light-shielding, the light condenser is sealably connected to the upper end of the light guide tube, the light condenser is used to concentrate light on the light guide tube, the light-transmitting plate is sealably connected to the lower end of the light guide tube, the light-transmitting plate is used to allow light in the light guide tube to pass through, the light guide tube is vertically slidably connected in the first guide hole, the light condenser protrudes upward out of the water surface, the light-transmitting plate protrudes downward out of the first guide hole, and the light-shielding and light-guiding parts of the light guide assembly are arranged so that the light can be fully irradiated on the submerged plants, reducing the dissipation of light at the peripheral wall position.

[0013] According to some embodiments of the present invention, the light guide tube includes an inner tube and an outer tube, the outer tube is made of stainless steel, the inner tube is made of reflective material, the inner tube is embedded in the inner circumferential wall of the outer tube, the condenser is connected to the upper end of the outer tube, and the light-transmitting plate is connected to the lower end of the outer tube.

[0014] According to some embodiments of the present invention, a tripod is provided at the lower end of the light guide tube, and the tripod is connected to the lower end of the outer tube. The lower end of the tripod is a square frame, and the counterweight blocks are connected to the four top corners of the square frame.

[0015] According to some embodiments of the present invention, an airbag is provided at the bottom of the counterweight block, and the inflation pipes of the four airbags are all connected to the same air supply pipe. A one-way air supply connector is provided at the free end of the air supply pipe, and the one-way air supply connector is used for an external air pump. The airbag can provide buoyancy to make the counterweight block float and adjust the position of the light guide component, so as to facilitate the position adjustment of the light guide component as needed.

[0016] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which: Figure 1 Schematic diagram of the structure of the submerged plant growth auxiliary device according to an embodiment of the present invention Figure 2 Schematic diagram of the structure of the algae removal device of the submerged plant growth auxiliary device according to an embodiment of the present invention Figure 1 ; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 Schematic diagram of the structure of the algae removal device of the submerged plant growth auxiliary device according to an embodiment of the present invention Figure 2 ; Figure 5 This is a schematic structural diagram of an air bag provided in a submerged plant growth assisting device according to an embodiment of the present invention; Figure 6 for Figure 5 An exploded view of the submerged plant growth assisting device is shown; Figure 7 for Figure 5 An exploded view of the light guide assembly of the submerged plant growth assisting device is shown; Figure 8 for Figure 5 A schematic diagram of a light guide tube of a submerged plant growth assisting device as viewed from above is shown.

[0018] Reference numerals: Shading assembly 100, frame 100a, shading net 100b, first guide hole 110, connecting mechanism 120, accommodating space 130; Light guide assembly 200, light guide tube 210, inner tube 211, outer tube 212; Focusing cover 220, light-transmitting plate 230, tripod 240; Counterweight 300, air bag 310, air pipe 320, one-way air supply connector 321; Connecting frame 410, light-transmitting folding film 420, Slider-crank mechanism 430 , driving gear 431 , first connecting rod 432 , second connecting rod 433 , crown sprocket 434 , chain 435 ; Bracket 440, wind wheel 450; Ultrasonic wave exciter 460 , control module 470 , photovoltaic panel 480 . DETAILED DESCRIPTION

[0019] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0020] In the description of the present invention, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0021] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0022] Reference Figures 1 to 8 The present invention discloses a submerged plant growth auxiliary device, including a light shading component 100, a light guide component 200, an algae removal device and a counterweight block 300.

[0023] The shading assembly 100 is provided with a first guide hole 110, and a connecting mechanism 120 is provided at the edge of the shading assembly 100. Two shading assemblies 100 can be connected through the connecting mechanism 120. A plurality of accommodating spaces 130 are provided in the shading assembly 100. The accommodating spaces 130 are used to load duckweed and use the duckweed for shading. The shading assembly 100 is used to float on the water surface.

[0024] The light guide component 200 is connected to the first guide hole 110 along a vertical sliding direction, and the lower end of the light guide component 200 protrudes downward from the first guide hole 110. The light guide component 200 can float on the water surface. The upper end of the light guide component 200 is used to guide light, the surrounding wall of the light guide component 200 blocks light, and the lower end of the light guide component 200 is used to provide light to submerged plants.

[0025] The algae removal device is provided on the light guide assembly 200 and is used to remove algae attached to the lower end of the light guide assembly 200. The counterweight block 300 is connected to the lower end of the light guide assembly 200 and is used to drag the light guide assembly 200 downward.

[0026] The shading component provided in this device shades the phytoplankton under the water surface, and uses the accommodating space 130 to restrain duckweed, so that the duckweed competes with the phytoplankton for nutrients and covers the water surface to shade, further reducing the survival probability of phytoplankton, thereby increasing the survival probability of submerged plants. This device will change the distribution of the underwater light field, that is, it limits the growth of phytoplankton in the water body through duckweed, and improves the light transmittance of the water body; then introduces sunlight into the lower layer of the water body through the light guide 210 to meet the light required for the growth of submerged vegetation; and through the provision of a connecting mechanism, multiple shading components can be spliced together to achieve shading treatment of a wide area of water surface, which is convenient for production and carrying. In addition, the accommodating space 130 restrains the duckweed to prevent the duckweed from leaking out, and the algae removal device provided removes the attached algae, so that the light guide component 200 can better provide light for the submerged vegetation.

[0027] Understandably, previous submerged plant lighting supplementation technologies and patents only considered supplemental lighting for submerged plants, without considering the negative impact of phytoplankton and attached algae growth on the system's submerged plant lighting efficiency. However, this patent not only supplements light for submerged plants, but also inhibits the growth of phytoplankton and attached algae, thereby improving light transmittance in the water and at the bottom of the light pipe 210.

[0028] Reference Figure 5 and Figure 6 The shading assembly 100 includes a frame 100a and a shading net 100b. The shading net 100b is disposed within the accommodating space 130 of the frame 100a. A first guide hole 110 is disposed in the frame 100a. A connecting mechanism 120 is disposed on the outer frame of the frame 100a. The shading assembly 100 has a simple structure and is easy to install. It should be noted that the shading net 100b is specially made. The shading net 100b includes a mesh body and a frame body. The mesh body is connected to the frame body. The frame body is connected to the hollowed-out portion of the frame 100a via a snap. Each hollowed-out portion of the frame 100a is connected to the shading net 100b. The frame 100a is constructed from a square tube or a round tube. The first guide hole 110 is disposed in the middle of the frame 100a. The frame 100a is configured as a rectangular frame. The four sides of the rectangular frame are each provided with a connecting mechanism 120. The rectangular frame is easy to splice. The connecting mechanism 120 is a magnet. Magnets are embedded in the four frames of the rectangular frame. The magnets are used to connect two adjacent frames 100a. The magnet adsorption-type splicing achieves fast and stable connection, and is also more convenient when dismantling.

[0029] In some embodiments, the connecting mechanism 120 can also be configured as a sleeve and a pin. The sleeve is set on the frame. When the frames of two adjacent frames 100a are aligned, the sleeves thereon are misplaced. At this time, the pin is inserted into the sleeve so that the two adjacent frames 100a are connected, and the two adjacent frames 100a can be flipped.

[0030] Reference Figure 2 and Figure 3The algae removal device includes a connecting frame 410, a light-transmitting folding film 420, a crank slider mechanism 430, a bracket 440 and a wind wheel 450. The connecting frame 410 is connected to the lower end of the light-guiding assembly 200, one end of the light-transmitting folding film 420 is connected to one end of the connecting frame 410, and the other end of the light-transmitting folding film 420 is slidably connected to the connecting frame 410. The crank slider mechanism 430 has a driven member connected to the other end of the light-transmitting folding film 420, and the crank slider mechanism 430 is used to drive the light-transmitting folding film 420 to contract or extend. The bracket 440 is connected to the frame 100a, and the wind wheel 450 is rotatably connected to the bracket 440. The wind wheel 450 is connected to the active member of the crank slider mechanism 430 through a chain 435. The wind wheel 450 is used to drive the active member of the crank slider mechanism 430 to rotate, and the active member of the crank slider mechanism 430 is used to drive the driven member of the crank slider mechanism 430 to reciprocate along a straight line.

[0031] It can be understood that the crank slider mechanism 430 includes a driving gear 431, a first connecting rod 432, a second connecting rod 433, a crown sprocket 434 and a chain 435. The frame 100a extends downwardly and is connected to a support rod. The driving gear 431 and the crown sprocket 434 are both rotatably connected to the support rod. The rotation axis of the crown sprocket 434 is perpendicular to the rotation axis of the driving gear 431. The crown sprocket 434 meshes with the driving gear 431. The crown sprocket 434 is connected to the wind wheel 450 through the chain 435. The driving gear 431 is connected to one end of the first connecting rod 432. The first connecting rod The other end of the rod 432 is hinged to one end of the second connecting rod 433, and the other end of the second connecting rod 433 is hinged to the other end of the light-transmitting folding film 420. When the other end of the light-transmitting folding film 420 slides, the light-transmitting folding film 420 can be expanded or contracted. When the light-transmitting folding film 420 serves as a protective layer to protect the light-transmitting plate 230, the expansion or contraction of the light-transmitting folding film 420 can remove algae or organisms attached to the light-transmitting folding film 420. Of course, the light-transmitting folding film 420 is made of hydrophobic plastic, and a light-transmitting algae-repellent paint is coated on the light-transmitting folding film 420.

[0032] Reference Figure 4 The algae removal device includes an ultrasonic exciter 460, a control module 470, and a photovoltaic panel 480. The ultrasonic exciter 460 is disposed at the lower end of the light guide assembly 200, the control module 470 is disposed on the frame 100a, and the photovoltaic panel 480 is disposed on the frame 100a. The photovoltaic panel 480 and the ultrasonic exciter 460 are both electrically connected to the control module 470. The photovoltaic panel 480 is used to power the ultrasonic exciter 460, and the control module 470 is used to control the vibration frequency of the ultrasonic exciter 460. The ultrasonic exciter 460 generates ultrasonic waves to crush attached algae or other aquatic animals.

[0033] Reference Figure 5 、 Figure 6 、 Figure 7 and Figure 8 The light guide assembly 200 includes a light guide tube 210, a light collecting cover 220 and a light transmitting plate 230. The upper and lower ends of the light guide tube 210 are both opened. The outer peripheral wall of the light guide tube 210 is light-shielded. The light collecting cover 220 is sealed and connected to the upper end of the light guide tube 210. The light collecting cover 220 is used to collect light on the light guide tube 210. The light transmitting plate 230 is sealed and connected to the lower end of the light guide tube 210. The light transmitting plate 230 is used to allow the light in the light guide tube 210 to pass through. The light guide tube 210 is vertically slidably connected to the first guide hole 110. The light collecting cover 220 protrudes upward from the water surface, and the light transmitting plate 230 protrudes downward from the first guide hole 110. The light-shielding and light-guiding parts of the light guide assembly 200 are arranged so that the light can be fully irradiated on the submerged plants, reducing the dissipation of light at the peripheral wall position.

[0034] In some embodiments, the focus cover 220 is a convex lens, and the focus cover 220 is snap-connected to the upper end of the light guide tube 210. The lower end of the light guide tube 210 is provided with a connecting flange, and the lower end of the connecting flange is provided with a sealing groove, which is used to embed a sealing ring. The light-transmitting plate 230 covers the lower end of the connecting flange and abuts the sealing ring. The light-transmitting plate 230 is connected to the connecting flange by bolts, and the light-transmitting plate 230 is made of organic glass.

[0035] Reference Figure 8 The light guide 210 includes an inner tube 211 and an outer tube 212. The outer tube 212 is made of stainless steel, and the inner tube 211 is made of reflective material. The inner tube 211 is embedded in the inner wall of the outer tube 212. The focusing cover 220 is connected to the upper end of the outer tube 212, and the light-transmitting plate 230 is connected to the lower end of the outer tube 212. The lower end of the light guide 210 is provided with a tripod 240, which is connected to the lower end of the outer tube 212. The lower end of the tripod 240 is a square frame, and the four corners of the square frame are connected to counterweights 300. The bottom of the counterweight 300 is provided with an airbag 310. The inflation pipes of the four airbags 310 are all connected to the same air supply pipe 320. The free end of the air supply pipe 320 is provided with a one-way air supply connector 321 for connecting to an external air pump. The airbag 310 provides buoyancy, allowing the counterweight 300 to float and adjust the position of the light guide assembly 200, facilitating the adjustment of the light guide assembly 200 as needed. It will be understood that the inner tube 211 is made of a soft material such as rubber or plastic, and the inner circumferential wall of the inner tube 211 is provided with a silver oxide reflective coating.

[0036] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] Of course, the present invention is not limited to the above-mentioned embodiments. Those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A submerged plant growth assisting device, characterized in that: include: A light-shielding component (100) is provided with a first guide hole (110); a connection mechanism (120) is provided on the edge of the light-shielding component (100); two light-shielding components (100) can be connected via the connection mechanism (120); a plurality of accommodating spaces (130) are provided in the light-shielding component (100); the accommodating spaces (130) are used to load duckweed and use the duckweed to provide light shielding; and the light-shielding component (100) is used to float on the water surface; A light guide component (200) is vertically slidably connected to the first guide hole (110), the lower end of the light guide component (200) protrudes downward from the first guide hole (110), the light guide component (200) can float on the water surface, the upper end of the light guide component (200) is used for guiding light, the peripheral wall of the light guide component (200) is light-shielding, and the lower end of the light guide component (200) is used for providing light to submerged plants; an algae removal device, arranged on the light guide assembly (200), the algae removal device being used to remove algae attached to the lower end of the light guide assembly (200); A counterweight block (300) is connected to the lower end of the light guide assembly (200), and the counterweight block (300) is used to drag the light guide assembly (200) to move downward.

2. The submerged plant growth assisting device according to claim 1, characterized in that: The shading assembly (100) comprises a frame (100a) and a shading net (100b); the shading net (100b) is arranged in a receiving space (130) of the frame (100a); the first guide hole (110) is arranged in the frame (100a); and the connecting mechanism (120) is arranged on an outer frame of the frame (100a).

3. The submerged plant growth assisting device according to claim 2, characterized in that: The frame (100a) is constructed from square tubes or round tubes, the first guide hole (110) is provided in the middle of the frame (100a), the frame (100a) is provided as a rectangular frame, and the four frames of the rectangular frame are all provided with the connection mechanism (120).

4. The submerged plant growth assisting device according to claim 3, characterized in that: The connecting mechanism (120) is a magnet, and the magnets are embedded in the four frames of the rectangular frame. The magnets are used to connect two adjacent frames (100a).

5. The submerged plant growth assisting device according to claim 3, characterized in that: The algae removal device comprises: A connecting frame (410) connected to the lower end of the light guide assembly (200); A light-transmitting folding film (420), one end of which is connected to one end of the connecting frame (410), and the other end of the light-transmitting folding film (420) is slidably connected to the connecting frame (410); a crank slider mechanism (430), a driven member connected to the other end of the light-transmitting folding film (420), the crank slider mechanism (430) being used to drive the light-transmitting folding film (420) to contract or extend; a bracket (440) connected to the frame (100a); A wind wheel (450) is rotatably connected to the bracket (440). The wind wheel (450) is connected to the active part of the slider-crank mechanism (430) via a chain (435). The wind wheel (450) is used to drive the active part of the slider-crank mechanism (430) to rotate. The active part of the slider-crank mechanism (430) is used to drive the driven part of the slider-crank mechanism (430) to reciprocate along a straight line.

6. The submerged plant growth assisting device according to claim 3, characterized in that: The algae removal device comprises: an ultrasonic exciter (460), arranged at the lower end of the light guide assembly (200); A control module (470) is arranged on the frame (100a); A photovoltaic panel (480) is arranged on the frame (100a), and the photovoltaic panel (480) and the ultrasonic exciter (460) are both electrically connected to the control module (470). The photovoltaic panel (480) is used to supply power to the ultrasonic exciter (460), and the control module (470) is used to control the vibration frequency of the ultrasonic exciter (460).

7. The submerged plant growth assisting device according to any one of claims 1 to 6, characterized in that: The light guide assembly (200) comprises a light guide tube (210), a light collecting cover (220) and a light-transmitting plate (230). The upper and lower ends of the light guide tube (210) are both opened. The outer peripheral wall of the light guide tube (210) is light-shielded. The inner wall of the light guide tube (210) is coated with a reflective coating. The light collecting cover (220) is sealed and connected to the upper end of the light guide tube (210). The light collecting cover (220) is used to collect light on the light guide tube (210). The light-transmitting plate (230) is sealed and connected to the lower end of the light guide tube (210). The light-transmitting plate (230) is used to allow light in the light guide tube (210) to pass through. The light guide tube (210) is vertically slidably connected to the first guide hole (110). The light collecting cover (220) protrudes upward from the water surface. The light-transmitting plate (230) protrudes downward from the first guide hole (110).

8. The submerged plant growth assisting device according to claim 7, characterized in that: The light guide tube (210) comprises an inner tube (211) and an outer tube (212), the outer tube (212) being made of stainless steel, the inner tube (211) being made of reflective material, the inner tube (211) being embedded in the inner peripheral wall of the outer tube (212), the condenser (220) being connected to the upper end of the outer tube (212), and the light-transmitting plate (230) being connected to the lower end of the outer tube (212).

9. The submerged plant growth assisting device according to claim 8, characterized in that: A tripod (240) is provided at the lower end of the light guide tube (210), and the tripod (240) is connected to the lower end of the outer tube (212). The lower end of the tripod (240) is a square frame, and the four top corners of the square frame are connected to the counterweight (300).

10. The submerged plant growth assisting device according to claim 9, characterized in that: An air bag (310) is provided at the bottom of the counterweight (300), and the inflation pipes of the four air bags (310) are all connected to the same air supply pipe (320). A one-way air supply connector (321) is provided at the free end of the air supply pipe (320), and the one-way air supply connector (321) is used for connecting to an external air pump.

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