A single-box circulating type algal-bee symbiotic culture device

Abstract

This utility model discloses a single-box circulating algae-shell symbiotic cultivation device, including a cultivation box with a lid, a water environment control system, and an attachment substrate device. A partition plate is erected inside the cultivation box to form a water flow channel between the partition plate and the inner wall of the cultivation box, and two functional areas are formed on both sides of the partition plate: a first area and a second area. The water environment control system includes a flow rate control unit, which is located in the first area; the attachment substrate device is located in the second area. The flow rate control unit controls the water contained in the cultivation box to circulate along the water flow channel at a preset flow rate. This utility model has a simple structure. When applied to the indoor artificial propagation of freshwater shellfish, it can improve the ecological balance between freshwater shellfish and algae, and promote the survival rate of artificially cultivated freshwater shellfish.

Description

Technical Field

[0001] This utility model relates to the technical field of laboratory growth of shellfish, and in particular to a single-box circulating algae-shellfish symbiotic culture device. Background Technology

[0002] The freshwater mussel, scientifically known as *Clamus maculatus*, belongs to the order Myriocarpus and the genus *Clamus*. It is a common fouling organism in inter-basin water diversion projects. On one hand, the extensive attachment and reproduction of freshwater mussels on water pipelines and other structures can lead to blockages, reducing water conveyance capacity. Furthermore, the attachment of freshwater mussels to pipeline walls damages the pipe surface, accelerating corrosion and seriously threatening the structural safety of water conservancy projects. On the other hand, as an invasive species, freshwater mussels spread to new water bodies through inter-basin water diversion projects, disrupting the ecosystem balance. Clearly, research on freshwater mussels is necessary.

[0003] In related technologies, research on freshwater shellfish is mostly conducted through field observation experiments in different regions or through indoor simulation experiments of freshwater shellfish habitats. Among these, field experiments are costly and difficult, while indoor experiments are also challenging because freshwater shellfish have high requirements for the control of indoor growth and reproduction environments, making it difficult for them to survive long-term indoors.

[0004] Therefore, how to enable freshwater shellfish to survive and reproduce indoors for a long time, laying the foundation for basic ecological and environmental tolerance research on freshwater shellfish, is also the top priority of this utility model. Utility Model Content

[0005] To solve or partially solve the problems existing in related technologies, this utility model provides a single-box circulating algae and shellfish symbiotic culture device, which can effectively improve the survival rate of artificial cultivation of freshwater shellfish and realize indoor artificial propagation of freshwater shellfish.

[0006] The first aspect of this utility model provides a single-box circulating algae-shellfish symbiotic cultivation device, including a cultivation box with a lid, a water environment control system, and an attachment substrate device; a partition plate is erected inside the cultivation box, and a water flow channel is formed between the partition plate and the inner wall of the cultivation box, and two functional areas are formed on both sides of the partition plate: a first area and a second area; the water environment control system includes a flow rate regulation unit, which is arranged in the first area; the attachment substrate device is arranged in the second area;

[0007] The flow rate control unit includes: a water-stopping baffle erected in the first region, one end of which is connected to the partition plate and the other end of which is connected to the inner wall of the incubator; a submersible pump located on the water inlet side of the water-stopping baffle, the submersible pump being connected to a channel provided on the water-stopping baffle through a water outlet pipe or the water outlet pipe passing through the channel; when the submersible pump is started, the water on the water inlet side of the water-stopping baffle flows out from the water outlet side of the water-stopping baffle through the water outlet pipe, so that the water contained in the incubator circulates along the water flow channel.

[0008] In one alternative embodiment, the cross-section of the incubator is racetrack-shaped or elliptical.

[0009] In one alternative embodiment, the partition plate is arranged along the long axis of the incubator cross-section.

[0010] In one optional embodiment, the water-stop baffle is provided with multiple channels, the channels being locking device channels, and the water outlet pipe passes through one of the locking device channels.

[0011] Furthermore, the positioning device channel is equipped with a switching valve, which controls the opening or closing of the positioning device channel.

[0012] In one optional embodiment, the water environment control system further includes one or more of a lighting unit, a heating unit, and a dissolved oxygen unit, as well as a control unit. One or more of the lighting unit, the heating unit, and the dissolved oxygen unit are connected to the control unit. One or more of the lighting unit, the heating unit, and the dissolved oxygen unit are arranged in the second area and are located on the opposite side of the water-stopping baffle, separate from the submersible pump.

[0013] Furthermore, the illumination unit includes a light source suspended above the second region.

[0014] In one alternative embodiment, the attachment substrate device includes a frame and at least one type of attachment material: the frame is disposed at the bottom of the second region; the attachment material is laid in the frame.

[0015] In one optional embodiment, a flow-stabilizing grid plate and a contaminant-blocking grid plate are erected inside the incubator, and the flow-stabilizing grid plate and the contaminant-blocking grid plate are respectively disposed at both ends of the partition plate; wherein, the contaminant-blocking grid plate and the water-stop partition plate are located on the same side of the partition plate, one end of the contaminant-blocking grid plate is connected to the first end of the partition plate, and the other end is connected to the inner wall of the incubator; the submersible pump is located between the contaminant-blocking grid plate and the water-stop partition plate; the flow-stabilizing grid plate and the substrate attachment device are located on the same side of the partition plate, one end of the flow-stabilizing grid plate is connected to the second end of the partition plate, and the other end is connected to the inner wall of the incubator.

[0016] In one optional embodiment, the bottom of the incubator is provided with a sludge trap, which is located on the extension line of the partition plate and close to the water inlet side of the water-stop partition plate; a filter port is opened at the bottom of the sludge trap.

[0017] The technical solution provided by this utility model can include the following beneficial effects:

[0018] A water flow channel is formed within the incubator using partitions, and the water circulation is achieved within the incubator using a flow rate control unit, forming an internal circulation flow mode. During the algae and shellfish cultivation process, the internal circulation flow mode eliminates the need to introduce external water, reducing the exchange and contact between the experimental water and the outside environment. Combined with a water environment control system, it can more precisely simulate the natural habitat environment of the algae and shellfish. The corners of the water flow channel are designed with rounded arcs, which better conforms to hydraulic characteristics. The two functional areas are a certain distance apart in the direction of water flow, which can improve the stability of the water environment in the second area where the attachment substrate device is located.

[0019] As can be seen, this invention has a simple structure. Applying it to the indoor artificial propagation of freshwater shellfish can improve the ecological balance between the shellfish and algae, and promote the survival rate of the artificially cultivated freshwater shellfish. Practice has proven that using this algae-shellfish symbiotic cultivation device, adult freshwater shellfish can be cultivated and propagated indoors for one year, with an adult shellfish survival rate exceeding 80%. Attached Figure Description

[0020] The above and other objects, features and advantages of the present invention will become more apparent from the description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components.

[0021] Figure 1 This is a perspective view of the algae-shellfish symbiotic cultivation device (with the lid open) shown in an embodiment of this utility model;

[0022] Figure 2 for Figure 1 Top view;

[0023] Figure 3 This is a top view of the algae-shellfish symbiotic cultivation device (with the lid closed) shown in an embodiment of this utility model;

[0024] Figure 4 yes Figure 1 A schematic diagram of a water-stop baffle, wherein Figure (a) is the front view and Figure (b) is the side view;

[0025] Figure 5 This is a structural block diagram of a water environment control system;

[0026] Figure 6 This is a schematic diagram of the lighting unit;

[0027] Figure 7 This is a schematic diagram of the substrate attachment device;

[0028] Figure 8 This is a schematic diagram of a flow stabilizing grid plate;

[0029] Figure 9 These are schematic diagrams and enlarged views of the debris-blocking grating.

[0030] In the diagram: 11. Box body, 12. Box cover, 13. Water tank, 14. First area, 15. Second area, 16. Water flow channel, 21. Divider plate, 31. Water stop plate, 32. Positioner channel, 33. Water inlet side, 34. Water outlet side, 4. Attachment substrate device, 41. Frame, 42. Attachment material, 43. Rock, 44. Pebble, 45. Concrete block, 5. Water environment control system, 51. Control unit, 52. Switch valve, 53. Lighting unit, 531. Bracket, 532. LED light source, 533. Screw, 534. Thread, 535. Beam, 535. Heating unit, 54. Dissolved oxygen unit, 55. Submersible pump, 61. Water outlet pipe, 62. Flow stabilizing grid plate, 71. Flow stabilizing grid, 72. Trash barrier grid plate, 81. Trash barrier grid, 82. Trash interception trough, 91. Filter port, 92. Detailed Implementation

[0031] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be more thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0032] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0033] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In related technologies, indoor experiments also face challenges due to the high requirements of controlled indoor growth and reproduction environments for freshwater shellfish. They are difficult to sustain indoors for extended periods, typically surviving for less than a month with a survival rate of less than 40%, and larvae often fail to survive effectively. Therefore, this invention focuses on how to enable freshwater shellfish to survive and reproduce indoors for an extended period, laying the foundation for basic ecological and environmental tolerance research on this species.

[0035] To address the aforementioned problems, this utility model provides a single-box circulating algae-shell symbiotic cultivation device, which can improve the ecological balance of freshwater shellfish and algae, promote the survival rate of artificially cultivated freshwater shellfish, and realize the indoor artificial propagation of freshwater shellfish.

[0036] The technical solutions of the embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0037] See Figures 1-3 This utility model provides a single-box circulating algae-shellfish symbiotic culture device, including a culture box, a water environment control system and an attachment substrate device 4.

[0038] In some embodiments, the incubator includes a box body 11 and a box cover 12.

[0039] The enclosure 11 contains a water tank 13 for holding experimental water. The water tank 13, serving as the functional part of the enclosure 11 for holding water, can be formed by the side panels of the enclosure 11 enclosing the bottom plate of the enclosure 11. The cross-section of the water tank 13 can be racetrack-shaped or elliptical. In at least one embodiment, the cross-sectional shape of the water tank 13 is: two semicircles of equal radius connecting the two shorter sides of a rectangle. In this embodiment, the approximate dimensions of the water tank 13 are a total length of 140cm, a width of 40cm, and a height of 60cm, wherein the length of the rectangular portion is 100cm, and the radius of the semicircular portion is 20cm.

[0040] In some embodiments, the partition plate 21 is erected in the housing 11, and water flow channels 16 are formed between the two sides of the partition plate 21 and the corresponding inner walls of the housing 11. Two functional areas are formed in the housing 11, located on either side of the partition plate 21: a first area 14 and a second area 15. Both the first area 14 and the second area 15 are located on the water flow channels 16. Further, the partition plate 21 is arranged along the long axis of the housing 11 and is the same length as the long side of the rectangular portion.

[0041] In this embodiment, the partition plate 21 has an approximate length of 100cm and a height of 60cm. The partition plate 21 is erected in the water tank 13, and by forming a water flow channel 16 in the single-chamber water tank, the single-chamber water tank is transformed into a circulating water tank.

[0042] The functional area where the substrate attachment device 4 is located is the second area 15, and the functional area where the flow rate control unit is located is the first area 14. The first area 14 and the second area 15 on both sides of the partition plate 21 are two straight channels. The length of the straight channel is approximately 100cm, the width is 20cm, and the height is 60cm.

[0043] Furthermore, the flow rate control unit includes a water-stop baffle 31 and a submersible pump 61, used to control the water circulation and flow rate within the tank 11. In some embodiments, the water-stop baffle 31 is erected within the tank 11, specifically in the first region 14; one end of the water-stop baffle 31 is perpendicularly connected to the partition plate 21, and the other end is perpendicularly connected to the inner wall of the tank 11. The water-stop baffle 31 has approximately a length of 20cm and a height of 60cm, and is erected in a straight channel in the first region 14 to block the water flow.

[0044] Please see Figure 4 Furthermore, multiple positioning holes 32 are provided on the water-stop baffle 31, and the positioning holes 32 have a centrally located tube structure. In some embodiments, a 3×3 array of positioning holes is provided on the water-stop baffle 31, with a hole diameter of 25mm and a tube length of 100mm. The submersible pump 61 is connected to a positioning hole 32 through a water outlet pipe 62. Specifically, the water outlet pipe 62 passes through the positioning hole 32 and is fixed to the water-stop baffle 31. When the submersible pump 61 is started, the water on the inlet side 33 of the water-stop baffle 31 flows out from the outlet side 34 through the water outlet pipe 62, thereby circulating the water in the tank 11. In addition, the water flow rate can be controlled by adjusting the power of the submersible pump 61. The submersible pump 61 can be a DC submersible pump with a rated voltage of 0-72V, a rated power of 0-500W, a rated flow rate of 0-8m3 / h, and an outlet diameter of 25mm.

[0045] by Figure 1-2For example, when the submersible pump 61 is started, the water on the inlet side 33 of the water-stop baffle 31 passes through the water-stop baffle 31, sequentially through the first region 14 and the second region 15, and then returns to the inlet side 33 of the water-stop baffle 31, thus forming an internal circulation flow in the clockwise direction within the water tank 13. Using an internal circulation mode during algae and shellfish cultivation eliminates the need to introduce external water, reducing the exchange and contact between the experimental water and the outside environment, and better simulating the algae and shellfish habitat environment. Therefore, the water in the water tank 13 can flow, which can be called an internal circulation mode. In contrast, an external circulation mode can be understood as the water tank 13 having an inlet and an outlet. The outlet of the water tank 13 is connected to the inlet of the water tank 13 through an external water collection tank to achieve water circulation.

[0046] In this embodiment, the first region 14 and the second region 15 are a certain distance apart on the water flow channel 16. Therefore, after controlling the water environment, the stability of the water environment in the second region 15 where the substrate attachment device 4 is located can be improved.

[0047] The purpose of having multiple locking holes 32 through the above-mentioned water-stop baffle 31 is to adjust the height and direction of the water outlet. These locking holes 32 are distributed at different heights and positions on the water-stop baffle 31. By fixing the water outlet pipe 62 into different locking holes 32, the height and direction of the water outlet can be adjusted. This, combined with adjusting the operating power of the submersible pump 61, allows for the control of the water flow rate. It should be noted that when the submersible pump 61 is started, all locking holes 32 except those with the water outlet pipe 62 fixed in them remain closed. Furthermore, each locking hole 32 is equipped with a switch valve 52, which controls the opening or closing of the locking hole 32. Figure 4 The switch valve 52 in the diagram is for illustrative purposes only, indicating that the switch valve is normally in the closed state, at which time the card slot channel 32 is in the isolated state.

[0048] In some embodiments, the water environment control system 5 further includes one or more of a lighting unit 53, a heating unit 54, and a dissolved oxygen unit 55, which are connected to and controlled by the control unit 51. The lighting unit 53, heating unit 54, and dissolved oxygen unit 55 are also located in the second region 15, but on the opposite side of the water-stop baffle 31 from the submersible pump 61. Specifically, the lighting unit 53, heating unit 54, and dissolved oxygen unit 55 are located on the outlet side 34 of the water-stop baffle 31, and the submersible pump 61 is located on the inlet side 33 of the water-stop baffle 31. The control unit 51 can be an integrated controller or a combination of multiple separate controllers. In this embodiment, the control unit 51 may include a flow rate controller connected to the submersible pump 61.

[0049] like Figure 6 As shown, in at least one embodiment, the lighting unit 53 includes a bracket 531 and an LED light source 532 mounted on the bracket 531. The LED light source 532 is connected to and controlled by the control unit 51, and the LED light source 532 is also configured to be height-adjustable. In one embodiment, the control unit 51 may include an LED lighting controller electrically connected to the LED light source 532. The LED light source 532 may be an LED tube with a length of 60cm, a color temperature of 6500K, and a cool white light source. The LED tube is fixed to the bracket 531, and 0-5 adjustable LED tubes can be installed on the bracket 531. Each LED tube is distributed along the water flow direction, and the bracket 531 is suspended above the second area 15. The bracket 531 is I-shaped, 50cm long and 15cm wide. A 26cm long screw 533 is fitted directly above the center of the I-shaped bracket 531. The screw 533 is connected to the center of the crossbeam 535 above the water flow channel 16 via a screw thread 534. The crossbeam 535 is mounted on the partition plate 21 and the box body 11. The height of the bracket 531 on the crossbeam 535 is adjusted by changing the height of the bracket 531 from the bottom of the water tank 13 via the upper and lower screw threads 534. The combination of the screw 533, screw thread 534, and crossbeam 535 is called the height adjuster of the bracket 531. The height adjuster can adjust the height range from 0-25cm, and works in conjunction with the LED light controller to adjust the working time of the LED tubes to control the light intensity and duration.

[0050] In at least one embodiment, the heating unit 54 includes a heating element located below the illumination unit 53 and mounted on the bottom of the housing 11. The heating element is connected to the control unit 51. In one embodiment, the control unit 51 may include a temperature controller. The heating element may be a digital display heating rod made of rectangular ceramic heating material with a rated power of 100W, a temperature control range of 18℃-35℃, and approximate dimensions of 15cm in length, 4cm in width, and 3cm in height. The digital display heating rod is located below the LED light source 532, and its back suction cup is fixed to the bottom of the water tank 13. It works in conjunction with the temperature controller to adjust its operating status and regulate the water temperature.

[0051] In at least one embodiment, the dissolved oxygen unit 55 includes an aeration stone, an oxygen pipe, and an oxygenation pump. The aeration stone is located below the LED light source 532 and installed at the bottom of the housing 11. The oxygenation pump is connected to the aeration stone via the oxygen pipe and is electrically connected to the control unit 51. In one embodiment, the control unit 51 may include a dissolved oxygen controller. The aeration stone can be a high-density diamond fine sand disc, with a diameter of 4cm-6cm and a thickness of 1.5cm. The rated operating voltage of the oxygenation pump is AC220V±10%, the rated power is 12W, and the air output is 0-20L / min. The aeration stone is located below the LED light source 532, and its back suction cup is fixed to the bottom of the water tank 13. The aeration stone is connected to the oxygenation pump via the oxygen pipe, and its working state is adjusted in conjunction with the dissolved oxygen controller to regulate the dissolved oxygen in the water.

[0052] In at least one embodiment, the water environment control system 5 further includes a display unit connected to the control unit 51, used to display at least one of flow rate information, temperature information, illumination information, and dissolved oxygen information. The display includes a digital display control screen, which is a touch-sensitive OLED screen. The submersible pump 61, heating element, LED lamp, and oxygenation pump are independently controlled by various controllers in the control unit 51 to display and monitor relevant information. For example, through the control unit 51, the submersible pump 61 can be set to control the water flow rate at 0.1 m / s-0.2 m / s, the digital display heating element can be set to control the water temperature at 22℃-24℃, and the oxygenation pump can be set to control the dissolved oxygen in the water at 6 mg / L-9 mg / L, etc.

[0053] like Figure 7 As shown, the attachment substrate device 4 further includes a frame 41 and at least one type of attachment material 42, which is laid within the frame 41. The at least one type of attachment material 42 includes at least one of rock 43, pebble 44, and concrete block 45. The attachment substrate device 4 includes at least two types of attachment materials 42, which are laid at different locations within the frame 41.

[0054] The second area 15 is the experimental area. The frame 41 is rectangular, with an approximate length of 80cm and width of 20cm. It is centrally located in the second area 15 and is embedded in the bottom of the second area 15. The frame 41 is evenly covered with a substrate material for inducing the attachment of freshwater shellfish. In this embodiment, the attachment material 42 consists of three types: rocks 43, pebbles 44, and concrete blocks 45. The flat area is combined in a 1:1:1 ratio, and the particle size range of each is 5cm-12cm. The porosity is controlled at 10%-20%. When cultivating freshwater shellfish and algae in the water tank 13, the box cover 12 at least fully covers the second area 15. The box cover 12 is an openable light-shielding and heat-insulating cover, such as black opaque foam KT board. The approximate dimensions of the box cover 12 are 95cm in length and 40cm in width. Obviously, the box cover 12 can also cover the first area 14.

[0055] As a preferred embodiment of the present invention, it further includes a flow-stabilizing grid plate 71 and a debris-blocking grid plate 81, which are respectively disposed at both ends of the partition plate 21. The two ends of the partition plate 21 are respectively referred to as the first end and the second end. The flow-stabilizing grid plate 71 is connected to the second end of the partition plate 21, and the debris-blocking grid plate 81 is connected to the first end of the partition plate 21. The flow-stabilizing grid plate 71 is located in the second region 15, and the debris-blocking grid plate 81 is located in the first region 14.

[0056] like Figure 8 As shown, in at least one embodiment, one end of the flow stabilizing grid plate 71 is perpendicularly connected to the second end of the partition plate 21, and the other end is connected to the inner wall of the box 11. The flow stabilizing grid plate 71 and the substrate attachment device 4 are located on the same side of the partition plate 21. The flow stabilizing grid plate 71 has an approximate height of 60cm and a width of 40cm. The flow stabilizing grid plate 71 is provided with an array of rectangular flow stabilizing grids 72, each 1cm × 3cm in size, with the long side longitudinally distributed. The spacing between adjacent rectangular flow stabilizing grids 72 on the left and right is 1cm, and the spacing between adjacent rectangular flow stabilizing grids 72 on the top and bottom is 1cm. The two sides of the flow stabilizing grid plate 71 are vertically fixed to the partition plate 21 and the inner wall of the box 11 respectively through slots to stabilize the water flow velocity.

[0057] like Figure 9 As shown, in at least one embodiment, one end of the debris-blocking grating 81 is perpendicularly connected to the first end of the partition plate 21, and the other end is connected to the inner wall of the housing 11. The debris-blocking grating 81 and the water-stopping baffle 31 are located on the same side of the partition plate 21. In this embodiment, the water-stopping baffle 31 is located near the first end of the partition plate 21, and a chamber for accommodating the submersible pump 61 is formed between the water-stopping baffle 31 and the debris-blocking grating 81. The debris-blocking grating 81 is used to intercept larger floating and suspended objects in the water body while ensuring normal water permeability, so as to avoid affecting the normal operation of the submersible pump 61.

[0058] The debris-blocking grating plate 81 is equipped with an array of rectangular debris-blocking grates 82, which are smaller than the rectangular flow-stabilizing grating plate 72. The debris-blocking grating plate 81 has an approximate height of 60cm and a width of 40cm, while the rectangular debris-blocking grates 82 are 0.8cm × 2cm in size and distributed laterally along their long sides. The two ends of the debris-blocking grating plate 81 are vertically fixed to the inner walls of the partition plate 21 and the housing 11 respectively via slots. The debris-blocking grating plate 81 is used to intercept larger floating and suspended substances in the water while ensuring normal water permeability, thus preventing interference with the normal operation of the submersible pump.

[0059] In a preferred embodiment of this utility model, the bottom of the housing 11 is further provided with a sludge interception trough 91. In at least one embodiment, the sludge interception trough 91 is connected to the first end of the partition plate 21 at the bottom of the water flow channel 16 and is located on the extension line of the partition plate 21. In this embodiment, a filter port 92 is provided at the bottom of the sludge interception trough 91, and the cross-section of the sludge interception trough 91 is a trapezoid with the upper base longer than the lower base. The sludge interception trough 91 is provided upstream of the sludge-blocking grid plate 81 and downstream of the attachment substrate device 4. The sludge interception trough 91 is located at the bottom of the water tank 13, and a filter port 92 is provided on the lower base of the sludge interception trough 91. This filter port 92 is generally closed, but is opened when needed to discharge larger suspended and settled substances in the water. The intercepting trough 91 is located on the extension line of the partition plate 21. The approximate dimensions of the intercepting trough 91 are: length 20cm, cross-section trapezoidal, upper base width 2cm, lower base width 1.5cm, and depth 1cm. A filter port 92 is set at the center of the bottom of the intercepting trough 91. The filter port 92 is a circular hole with a diameter of 1.5cm. The filter port 92 can be connected to a drain pipe to intercept and discharge large suspended and sedimentary substances brought in during the water flow.

[0060] As can be seen, the single-box algae-shell clam symbiotic cultivation device provided in this embodiment has a simple structure. The semi-circular design at the corner of the water flow channel 16 better conforms to hydraulic characteristics. Simultaneously, the internal circulation mode reduces the contact between the experimental water and external sources. Combined with the water environment control system 5, which can regulate the water environment, it can more precisely simulate the natural habitat environment of the algae and shellfish, significantly improving the survival rate of indoor freshwater shellfish cultivation and ensuring long-term stability and effectiveness. Practice has proven that using this algae-shell clam symbiotic cultivation device, freshwater shellfish can be cultivated and propagated indoors for one year, with a survival rate of over 80%.

[0061] What is even more special is that after using this invention to cultivate freshwater shellfish for a period of time, the phenomenon of larval growth and reproduction can be observed. Therefore, this invention can realize the breeding of larvae and the cultivation of adult shellfish in the water tank 13, and realize the artificial breeding of freshwater shellfish indoors.

[0062] The following is a method for symbiotic cultivation of algae and shellfish using the above-mentioned algae-shellfish symbiotic cultivation device:

[0063] (1) Add experimental water to water tank 13 and control the water depth to (20±1) cm; control the water to circulate at a flow rate of 0.1-0.2 m / s, control the water temperature to (23±1) ℃, and control the dissolved oxygen in the water to 6-9 mg / L;

[0064] (2) Add live freshwater shellfish collected in the wild to the attachment substrate device 4;

[0065] (3) Add artificially cultured high-concentration green algae solution to the area below LED light source 532, control the light intensity to 8500Lux-8700Lux, and set the working and intermittent time of the LED tube to 12h:12h;

[0066] (4) After the above process is completed, close the box lid 12 to achieve the effect of heat preservation and light blocking, and keep the freshwater shellfish in a dark environment.

[0067] After the freshwater mussels have been stably attached and grown for a certain period of time, the box cover 12 can be opened to observe the growth of the freshwater mussels in the water tank 13, or some live freshwater mussels can be taken out for research experiments.

[0068] Specifically, this novel algae-shellfish symbiotic cultivation device enables the growth of freshwater shellfish into adult shellfish within one year, during which time the adult shellfish reproduce larvae and are cultivated as adult shellfish. Therefore, the optimal hydrological rhythm required for the reproduction of freshwater shellfish can be determined first. By adjusting the water temperature and flow rate in the tank, the optimal hydrological rhythm for the reproduction of freshwater shellfish can be simulated, and the amount of algae food in the tank can be controlled. After the freshwater shellfish has stably attached and grown for a certain period of time, the normal reproduction of larvae and cultivation of adult shellfish can be observed.

[0069] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A single-box circulating algae-shellery symbiotic cultivation device, characterized in that: Includes an incubator with a lid, a water environment control system, and an attachment substrate device; The incubator is equipped with a partition plate, and a water flow channel is formed between the partition plate and the inner wall of the incubator. Two functional areas are also formed on both sides of the partition plate: a first area and a second area. The water environment control system includes a flow velocity control unit, which is deployed in the first area. The attachment substrate device is deployed in the second area; The flow rate control unit includes: A water-stop partition is erected in the first area, with one end connected to the partition plate and the other end connected to the inner wall of the incubator; A submersible pump is located on the water inlet side of the water-stop baffle. The submersible pump is connected to a channel provided on the water-stop baffle through a water outlet pipe, or the water outlet pipe passes through the channel. When the submersible pump is started, the water on the water inlet side of the water-stop baffle flows out from the water outlet side of the water-stop baffle through the water outlet pipe, so that the water contained in the incubator circulates along the water flow channel.

2. The algae-shellfish symbiotic cultivation device as described in claim 1, characterized in that: The cross-section of the incubator is racetrack-shaped or elliptical.

3. The algae-shellfish symbiotic cultivation device as described in claim 1, characterized in that: The partition plates are arranged along the long axis of the incubator's cross-section.

4. The algae-shellfish symbiotic cultivation device as described in claim 1, characterized in that: The water-stop baffle is provided with multiple channels, which are positioning device channels, and the water outlet pipe passes through one of the positioning device channels.

5. The algae-shellfish symbiotic cultivation device as described in claim 4, characterized in that: The positioning device channel is equipped with a switching valve, which controls the opening or closing of the positioning device channel.

6. The algae-shellfish symbiotic cultivation device as described in claim 1, characterized in that: The water environment control system further includes one or more of a lighting unit, a heating unit, and a dissolved oxygen unit, as well as a control unit. One or more of the lighting unit, the heating unit, and the dissolved oxygen unit are connected to the control unit. One or more of the lighting unit, the heating unit, and the dissolved oxygen unit are arranged in the second area and are located on the opposite side of the water-stopping baffle, separate from the submersible pump.

7. The algae-shellfish symbiotic cultivation device as described in claim 6, characterized in that: The illumination unit includes a light source suspended above the second region.

8. The algae-shellfish symbiotic cultivation device as described in claim 1, characterized in that: The attachment substrate device includes a frame and at least one type of attachment material: the frame is located at the bottom of the second region; the attachment material is laid in the frame.

9. The algae-shellfish symbiotic cultivation device as described in claim 1, characterized in that: The incubator is equipped with a flow-stabilizing grid plate and a contaminant-blocking grid plate, which are respectively located at both ends of the partition plate. The contaminant-blocking grid plate and the water-stopping partition plate are located on the same side of the partition plate, with one end of the contaminant-blocking grid plate connected to the first end of the partition plate and the other end connected to the inner wall of the incubator. The submersible pump is located between the contaminant-blocking grid plate and the water-stopping partition plate. The flow-stabilizing grid plate and the substrate attachment device are located on the same side of the partition plate, with one end of the flow-stabilizing grid plate connected to the second end of the partition plate and the other end connected to the inner wall of the incubator.

10. The algae-shellfish symbiotic cultivation device as described in claim 1, characterized in that: The bottom of the incubator is provided with a sludge trap, which is located on the extension line of the partition plate and close to the water inlet side of the water-stop partition plate; a filter port is opened at the bottom of the sludge trap.

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