Layering device and method capable of realizing multi-layer fluid

Abstract

The invention discloses a layering device and method capable of achieving multi-layer fluid, and belongs to the technical field of fluid experiment devices. The device comprises a water tank, a liftable layering partition plate mechanism and a control unit, a flow inlet is formed in the side wall of the water tank, a flow outlet is formed in the bottom of the water tank, the liftable layering partition plate mechanism comprises a mechanism supporting frame, a vertical lifting driving unit, a partition plate folding and unfolding driving unit and a flexible partition plate, and the flexible partition plate can transversely partition the water tank through a self-sealing partition plate channel to form a closed area. The control unit cooperates with all the components to act. The layering method comprises the steps that the partition plates are lowered to the preset height, the flexible partition plates are released for isolation, fluid with the corresponding density is injected, the partition plates are wound, and the multi-layer stepped layered structure (the density of each layer is distributed in a vertical gradient mode) can be prepared by repeating the circulation. Layered preparation time is shortened from several hours to dozens of minutes, interlayer interfaces are clear, full-process automation is achieved, the device is adaptive to experiments in multiple fields such as ocean engineering and fluid mechanics, and experiment repeatability and device universality are remarkably improved.

Description

Technical Field

[0001] This invention belongs to the technical field of fluid experimental devices, specifically relating to a device and method for realizing the layering of multilayer fluids. Background Technology

[0002] In experimental research in fields such as marine engineering, environmental science, and fluid mechanics, constructing fluid environments with stable density stratification is fundamental for simulating ocean temperature and salinity stratification, studying pollutant diffusion patterns, and observing internal wave propagation characteristics. The reliability of such experiments highly depends on the clarity and stability of the stratification interfaces.

[0003] Currently, traditional layered preparation methods generally adopt the gravity substitution method, which involves slowly injecting a high-density fluid from the bottom of the tank and relying on density difference and natural diffusion to achieve layering. However, this method has several technical bottlenecks: (1) The preparation efficiency is extremely low. Since the injection speed must be strictly limited to a very low level to avoid turbulence caused by injection kinetic energy leading to fluid mixing, the whole process often lasts for several hours or even longer, which seriously slows down the experimental pace and reduces scientific research efficiency; (2) It is difficult to achieve a multi-layered stepped layered structure with clear interfaces. The physical mechanism of the gravity substitution method naturally tends to form a gradient layer with continuously changing density. If a multi-layered structure is forcibly prepared, different density fluids must be precisely switched and the flow rate must be strictly controlled during the injection process. The operation is extremely complicated and easily leads to blurred interlayer interfaces and uneven layer thickness, which significantly reduces the repeatability of the experiment; (3) The operation process is highly dependent on the experience of the operator. Small deviations, including injection speed stability, fluid concentration accuracy, and environmental vibration isolation, can directly affect the stratification quality, resulting in a lack of consistency and standardization in experimental results; (4) The system is fragile. During the long injection process, external interferences such as vibration of the experimental platform, personnel movement, or environmental temperature fluctuations can easily destroy the slowly formed density interface. At the same time, the injection system itself, such as the pulse of the pump or the fluctuation of the valve, is difficult to stabilize for a long time, further increasing the risk of experimental failure; (5) The initial preparation and debugging process is cumbersome and time-consuming. It is necessary to perform long-term flow rate calibration on equipment such as peristaltic pumps and to finely control the start-up process to avoid impacting the fluid at the bottom of the tank. This places extremely high technical requirements on the operator and prolongs the experimental cycle. The closest solution to the function of this invention is the traditional gravity substitution method, which injects brine at a low speed from the bottom and discharges fresh water from the top, relying on natural diffusion to form gradient stratification. However, this method cannot meet the actual needs of rapid and controllable preparation of clear multi-layer stratification, especially in experiments that require precise simulation of multi-layer fluid environments.

[0004] To address the aforementioned issues, existing technologies urgently need improvement. Summary of the Invention

[0005] This invention provides a layering device and method for multilayer fluids. By using a liftable layering partition mechanism, it solves the technical bottleneck of traditional gravity substitution methods in preparing layered fluids, which requires extremely low-speed injection to avoid fluid mixing, resulting in low preparation efficiency, excessive time consumption, and difficulty in quickly and controllably forming a multilayer stepped layered structure with clear interfaces.

[0006] The first objective of this invention is to provide a device for layering multi-layer fluids, comprising: a water tank, a liftable layering partition mechanism, and a control unit. The water tank is used to contain fluid; the side wall of the water tank has an inlet, and the bottom has an outlet, for fluid injection and discharge, respectively. The liftable layering partition mechanism is installed on the side of the water tank and includes a mechanism support frame, a vertical lifting drive unit, a partition retraction drive unit, and a flexible partition. The mechanism support frame is fixed to the side wall of the water tank. The vertical lifting drive unit is installed on the mechanism support frame and drives the partition retraction drive unit to move up and down vertically. One end of the flexible partition is connected to the partition retraction drive unit and can be wound up or released under its drive. The control unit is electrically connected to the vertical lifting drive unit and the partition retraction drive unit, respectively, for controlling the coordinated action of each component to achieve the layering preparation of multi-layer fluids.

[0007] Preferably, the vertical lifting drive unit includes a lifting frame, a first servo motor, a transmission gear, and a linear rack; the lifting frame is located inside the mechanism support frame, the bottom of the lifting frame is connected to a partition retraction drive unit, the linear rack is fixed to the lifting frame in the vertical direction, the first servo motor is fixed to the mechanism support frame through a motor mount, and the transmission gear is connected to the output shaft of the first servo motor through a coupling; the transmission gear meshes with the linear rack.

[0008] Preferably, the partition winding and unwinding drive unit includes a second servo motor, a round shaft, a reel, and a belt. The output end of the second servo motor is connected to the round shaft, the reel is located below the round shaft, and a belt is sleeved between the round shaft and the reel. One end of the flexible partition is fixed to the reel. The second servo motor drives the reel to rotate, thereby driving the belt to wind up or release the flexible partition.

[0009] Preferably, the flexible partition is made of a flexible waterproof membrane, the width of which matches the width of the tank, and can extend to the inner wall of the other side of the tank to form a closed area after release.

[0010] Preferably, the water tank sidewall has a self-sealing partition channel at the bottom, which is adapted to allow the flexible partition to pass through and can automatically close and seal after the flexible partition is rolled up.

[0011] Preferably, the self-sealing partition channel includes an internal guide groove and a silicone sealing layer, forming a double-layer sealing structure to achieve leakage prevention when the flexible partition passes through and self-closing after removal.

[0012] Preferably, the device can prepare two or more stepped layered structures, with the fluid density of each layer distributed in a gradient along the vertical direction and the interlayer interface being clear.

[0013] A second objective of this invention is to provide a method for achieving the layering of multilayer fluids, based on the aforementioned layering apparatus, comprising the following steps: S1. The control unit controls the vertical lifting drive unit to lower the partition retraction drive unit to the first floor preset height H1. S2. The control unit controls the partition retraction and extension drive unit to release the flexible partition. The flexible partition extends through the self-sealing partition channel to the inner wall of the other side of the water tank, forming a bottom closed area. S3. The control unit controls the pump valve corresponding to the inlet to open, injecting a first fluid of a preset density into the bottom closed area, and then closes the pump valve after the injection is completed. S4. The control unit controls the partition retraction and extension drive unit to retract the flexible partition. After the flexible partition is removed, the first fluid is stably distributed at the bottom of the water tank. S5. Repeat steps S1-S4, control the vertical lifting drive unit to raise the partition retraction drive unit to the next preset height Hn, n≥2, inject the nth fluid with a density less than the previous layer into the newly formed closed area, and repeat the process to complete the layer preparation of multi-layer fluid.

[0014] Preferably, in step S3, the injection time is set by the control unit or the injection volume of the first fluid and subsequent fluids is controlled by the feedback data from the flow meter to ensure that the thickness of each layer is uniform.

[0015] The beneficial effects of this invention are: (1) Significantly improved preparation efficiency: The present invention achieves active physical isolation through a liftable layered partition mechanism, which eliminates concerns about interlayer mixing during the fluid injection process, thereby allowing the use of high-speed injection mode and reducing the total preparation time from several hours to tens of minutes, thus completely solving the core efficiency bottleneck that restricts the progress of the experiment.

[0016] (2) Enhances the versatility of the device and the flexibility of the experiment: The vertical lifting drive unit of this invention works in conjunction with the control unit to enable the liftable layered partition mechanism to stop precisely at any preset height without replacing any hardware components; the layer thickness, number of layers and position can be flexibly adjusted, and two or more stepped layered structures can be realized without replacing hardware, adapting to different experimental needs in fields such as marine engineering and fluid mechanics; the device has a compact structure, can be adapted to water tanks of different sizes, and can operate stably in ordinary laboratory environments, making it more universal.

[0017] (3) Significantly increases the number of layered fluids: The layering device of the present invention breaks through the limitation of traditional methods that can usually only prepare two layers, and has the powerful ability to easily achieve four, five or even more layers of fluid layering; the liftable layering partition mechanism can perform multiple cyclic positioning in the vertical direction under program control. At each predetermined height, the flexible partition can quickly complete a complete operation of "extend-isolate liquid injection-rewind", thereby stably constructing a new fluid layer on top of the existing layering. This modular and programmable working method makes it very simple to increase the number of layers. It is only necessary to preset the new height parameters in the control program, without any modification to the device hardware, thus realizing the leap from the traditional "two-layer" to "multi-layer" application.

[0018] (4) Expanding the boundaries of scientific research applications: This invention supports the preparation of complex layered structures such as non-uniform layered structures and thin-layer interfaces, breaking through the limitations of traditional methods that can only form gradient layered or two-layer structures. It provides a brand-new experimental platform for cutting-edge fluid mechanics research such as multilayer internal wave propagation and double diffusion convection, and promotes innovative research progress in related fields. Attached Figure Description

[0019] For ease of explanation, the present invention will be described in detail below with reference to specific embodiments and accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the liftable layered partition mechanism of the present invention; Figure 3 This is a schematic diagram of the two-layer process of the present invention; Figure 4 This is a schematic diagram of the three-layer process of the present invention.

[0021] In the picture: 100-Water tank; 110-Inlet; 120-Outlet; 200-Liftable layered partition mechanism; 210-Mechanism support frame; 220-Vertical lifting drive unit; 221-Lifting frame; 222-First servo motor; 223-Transmission gear; 224-Linear rack; 225-Motor base; 226-Fixed crossbar; 230-Partition retraction and unfolding drive unit; 231-Second servo motor; 232-Round shaft; 233-Roller; 234-Belt; 240-Flexible partition; 300-Self-sealing partition channel. Detailed Implementation

[0022] The following are specific embodiments of the present invention described in conjunction with the accompanying drawings, further illustrating the technical solutions of the present invention. However, the present invention is not limited to these embodiments. Specific details, such as particular configurations and components, are provided in the following description merely to aid in a comprehensive understanding of the embodiments of the present invention. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present invention. Furthermore, for clarity and brevity, descriptions of known functions and structures have been omitted.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0024] like Figures 1-4 As shown, this application provides a multi-layer fluid stratification device, including a water tank 100, a liftable stratification partition mechanism 200, and a control unit. The water tank 100 is used to contain fluid, with an inlet 110 on its side wall and an outlet 120 at its bottom for fluid injection and discharge, respectively. The liftable stratification partition mechanism 200 is installed on the side of the water tank 100 and includes a mechanism support frame 210, a vertical lifting drive unit 220, and a partition retraction drive unit 23. The system includes a flexible partition 240; a mechanism support frame 210 fixed to the side wall of the water tank 100; a vertical lifting drive unit 220 installed on the mechanism support frame 210 and driving the partition retraction drive unit 230 to rise and fall vertically; one end of the flexible partition 240 is connected to the partition retraction drive unit 230, and can be rolled up or released under its drive; a control unit is electrically connected to the vertical lifting drive unit 220 and the partition retraction drive unit 230 respectively, and is used to control the coordinated action of each component to realize the layered preparation of multilayer fluid.

[0025] Specifically, the working principle of this layering device is to achieve efficient preparation of multi-layered fluids by dynamically creating temporary isolation areas. The control unit first sends a command to the vertical lifting drive unit 220, driving the partition retraction drive unit 230 to move vertically along the side wall of the water tank 100 to a preset height. Then, the partition retraction drive unit 230 releases the flexible partition 240, allowing it to span the interior of the water tank 100 and extend to the opposite inner wall, forming an independent closed area. Fluid is directionally injected into this closed area through the inlet 110. After injection, the flexible partition 240 is retracted, and the fluid is stably deposited at the bottom of the water tank 100 under gravity. By repeating the above lifting, releasing, injecting, and retracting actions, multi-layered fluid structures can be constructed sequentially at different heights. Furthermore, the inlet 110 on the side wall of the water tank 100 and the outlet 120 at the bottom work together to ensure directional fluid flow and prevent interlayer mixing caused by kinetic energy impact during injection. The rigid fixation of the mechanism support frame 210 effectively resists external vibration interference, ensuring operational stability. In one specific implementation, the water tank 100 can be made of transparent acrylic material, and the flexible partition 240 is specifically a polyester waterproof film, the width of which is precisely matched with the inner width of the water tank 100; the control unit coordinates the timing of the actions of each drive unit through a preset program. Thus, this solution abandons the passive mode of relying on slow natural diffusion in the traditional gravity substitution method, and significantly shortens the layer preparation cycle through an active isolation mechanism; at the same time, the operation method of fluid injection within a closed area effectively suppresses interlayer turbulence and mixing, ensuring the clarity of the interface and the uniformity of layer thickness in the multi-layer stepped layered structure, thereby achieving high-efficiency and highly repeatable multi-layer fluid layer preparation.

[0026] This application further proposes a vertical lifting drive unit 220 including a lifting frame 221, a first servo motor 222, a transmission gear 223, and a linear rack 224; the lifting frame 221 is located inside the mechanism support frame 210, and the bottom of the lifting frame 221 is connected to the partition retraction drive unit 230; fixed crossbars 226 are symmetrically arranged on the outer side of the lifting frame 221; the linear rack 224 is installed on the fixed crossbar 226 located in the middle; the first servo motor 222 is fixed to the mechanism support frame 210 through a motor base 225; the transmission gear 223 is connected to the output shaft of the first servo motor 222 through a coupling; the transmission gear 223 meshes with the linear rack 224.

[0027] Specifically, the solution of this application uses a first servo motor 222 to drive a transmission gear 223 to rotate. The transmission gear 223 meshes with a linear rack 224 to convert the rotational motion into the vertical linear motion of the lifting frame 221. The lifting frame 221 is embedded in the mechanism support frame 210 to form a rigid support environment, avoiding external vibration interference with the lifting process. The direct connection between the bottom of the lifting frame 221 and the partition retraction drive unit 230 ensures accurate height positioning. The linear rack 224 is installed on the central fixed crossbeam 226, so that the stress point is located in the center of gravity area of ​​the frame, reducing vibration caused by eccentricity. The first servo motor 222 is fixed to the mechanism support frame 210 through a motor base 225. The transmission gear 223 and the output shaft of the first servo motor 222 are connected through a coupling to absorb minor misalignment deviations in the transmission process, ensuring smooth motion conversion without impact, and ultimately achieving high precision and stability of the flexible partition 240 during the lifting process.

[0028] This application further proposes a partition winding and unwinding drive unit 230, which includes a second servo motor 231, a round shaft 232, a reel 233, and a belt 234. The output end of the second servo motor 231 is connected to the round shaft 232. The reel 233 is located below the round shaft 232. The belt 234 is sleeved between the round shaft 232 and the reel 233. One end of the flexible partition 240 is fixed to the reel 233. The second servo motor 231 drives the reel 233 to rotate, thereby driving the belt 234 to wind up or unwind the flexible partition 240.

[0029] Specifically, this application drives the circular shaft 232 to rotate through the output end of the second servo motor 231. The circular shaft 232 and the reel 233 are connected by a belt 234. Due to the vertical layout of the reel 233 below the circular shaft 232, the power transmission path conforms to the direction of gravity, reducing the resistance when the partition is retracted or extended. When the second servo motor 231 is started, the circular shaft 232 obtains a stable speed, and the reel 233 rotates smoothly under the drive of the belt 234, so that the flexible partition 240 fixed on it can perform the winding or releasing action, thereby forming a stable closed area in the fluid environment and avoiding fluid mixing caused by mechanical vibration.

[0030] This application further proposes a self-sealing partition channel 300 at the bottom of the side wall of the water tank 100. The self-sealing partition channel 300 is adapted to allow the flexible partition 240 to pass through, and can automatically close and seal after the flexible partition 240 is rolled up. Specifically, the self-sealing partition channel 300 includes an internal guide groove and a silicone sealing layer, forming a double-layer sealing structure to achieve leakage prevention when the flexible partition passes through and self-closure after removal.

[0031] Specifically, the solution in this application constructs a dynamic sealing and static sealing conversion mechanism through the cooperation between the self-sealing partition channel 300 and the flexible partition 240. When the flexible partition 240 passes through the self-sealing partition channel 300 under the drive of the partition retraction and extension drive unit 230, the internal guide groove provides precise path guidance, ensuring that the flexible partition 240 moves smoothly along the predetermined trajectory, avoiding vibration and friction caused by deviation or jamming, thereby effectively suppressing the risk of fluid leakage during movement; after the flexible partition 240 is removed, the silicone sealing layer rebounds and closes immediately due to its high elasticity, forming a tight physical barrier to prevent residual fluid from diffusing to adjacent layers through the channel gaps. The synergistic effect of the double-layer structure organically combines the guiding function with the self-sealing mechanism, ensuring the dynamic sealing performance of the flexible partition 240 during release and retraction, and enhancing the reliability of the static closure state.

[0032] This application further proposes a device capable of preparing two or more stepped layered structures, with the fluid density of each layer exhibiting a gradient distribution along the vertical direction and clear interlayer interfaces.

[0033] This application also proposes a layering method for the above-mentioned layering device, comprising the following steps: S1. The control unit controls the vertical lifting drive unit 220 to lower the partition retraction drive unit 230 to the first floor preset height H1. S2. The control unit controls the partition retraction and release drive unit 230 to release the flexible partition 240. The flexible partition 240 extends through the self-sealing partition channel 300 to the inner wall of the other side of the water tank 100, forming a bottom closed area. The injection time is set by the control unit or the injection volume of the first fluid and subsequent fluids is controlled by the data feedback from the flow meter to ensure that the thickness of each layer is uniform. S3. The control unit controls the pump valve corresponding to the inlet 110 to open, injecting a first fluid of a preset density into the bottom closed area, and then closes the pump valve after the injection is completed. S4. The control unit controls the partition retraction drive unit 230 to retract the flexible partition 240. After the flexible partition 240 is removed, the first fluid is stably distributed at the bottom of the water tank. S5. Repeat steps S1-S4, control the vertical lifting drive unit 220 to raise the partition retraction drive unit 230 to the next preset height Hn, n≥2, inject the nth fluid with a density less than the previous layer into the newly formed closed area, and repeat the process to complete the layer preparation of multi-layer fluid.

[0034] In specific implementation, taking the preparation of a three-layer fluid stratification as an example: First, the vertical lifting drive unit 220 is activated, and the entire mechanism is lowered to the first layer at the predetermined height H1. Then, the partition retraction drive unit 230 is activated, releasing the flexible partition 240. The flexible partition 240 extends to the right, passes through the self-sealing partition channel 300, and continues to extend to the right until it contacts the right side wall, isolating a closed bottom area at the bottom of the water tank 100. The pump valve corresponding to the inlet 110 is opened, injecting the densest liquid A into the closed bottom area. At the same time, a medium-density liquid B is injected above the flexible partition 240, and the liquid level rises until it reaches the predetermined height (controlled by the injection time or flow meter). After injection, the partition retraction drive unit 230 retracts the flexible partition 240. At this time, the water tank 100 has been divided into two new areas, the lower area (filled with liquid 1) and the upper area (liquid 2). As the flexible partition is retracted, the space it leaves is occupied by liquid 2. Due to the density difference, liquid 2 is stably suspended above liquid 1, forming a clear interface.

[0035] The vertical lifting drive unit 220 is restarted, raising the entire mechanism to the predetermined height H2 of the second layer and then stopping. The partition retraction drive unit 230 is activated, releasing the flexible partition 240 so that it extends along the surface of the liquid 2 until it seals the lower layer of liquid. Then, the pump valve of the inlet 110 is opened, injecting the liquid 3 with the lowest density into the uppermost layer of the water tank 100. After the injection is completed, the partition retraction drive unit 230 retracts the flexible partition 240. At this point, the water tank 100 has been divided into three new areas: the lower area (filled with liquid 1), the middle area (liquid 2), and the upper area (liquid 3), ultimately forming a stable three-layer structure.

[0036] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0037] In the description of this application, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

Claims

1. A device for realizing the stratification of multilayer fluids, characterized in that, include: A water tank (100) is used to contain fluid; the side wall of the water tank (100) is provided with an inlet (110) and the bottom is provided with an outlet (120) for fluid injection and discharge, respectively. A liftable layered partition mechanism (200) is installed on the side of a water tank (100). The liftable layered partition mechanism (200) includes a mechanism support frame (210), a vertical lifting drive unit (220), a partition retraction drive unit (230), and a flexible partition (240). The mechanism support frame (210) is fixed to the side wall of the water tank (100). The vertical lifting drive unit (220) is installed on the mechanism support frame (210) and drives the partition retraction drive unit (230) to rise and fall vertically. One end of the flexible partition (240) is connected to the partition retraction drive unit (230) and can be rolled up or released under its drive. The control unit is electrically connected to the vertical lifting drive unit (220) and the partition retraction drive unit (230) respectively, and is used to control the coordinated action of each component to realize the layered preparation of multilayer fluid.

2. The device for realizing multilayer fluid stratification according to claim 1, characterized in that, The vertical lifting drive unit (220) includes a lifting frame (221), a first servo motor (222), a transmission gear (223), and a linear rack (224). The lifting frame (221) is located inside the mechanism support frame (210). The bottom of the lifting frame (221) is connected to the partition retraction drive unit (230). Fixed crossbars (226) are symmetrically arranged on the outside of the lifting frame (221). The linear rack (224) is installed on the fixed crossbar (226) located in the middle. The first servo motor (222) is fixed to the mechanism support frame (210) through the motor base (225). The transmission gear (223) is connected to the output shaft of the first servo motor (222) through a coupling. The transmission gear (223) meshes with the linear rack (224).

3. The stratification device for multilayer fluids according to claim 1, characterized in that, The partition winding and unwinding drive unit (230) includes a second servo motor (231), a round shaft (232), a reel (233), and a belt (234). The output end of the second servo motor (231) is connected to the round shaft (232). The reel (233) is located below the round shaft (232). The belt (234) is sleeved between the round shaft (232) and the reel (233). One end of the flexible partition (240) is fixed on the reel (233). The second servo motor (231) drives the reel (233) to rotate, thereby driving the belt (234) to wind up or unwind the flexible partition (240).

4. The stratification device for multilayer fluids according to claim 1, characterized in that, The flexible partition (240) is made of a flexible waterproof membrane, the width of which matches the inner width of the water tank (100), and can extend to the inner wall of the other side of the water tank (100) to form a closed area after release.

5. The device for stratification of multilayer fluids according to claim 1, characterized in that, The self-sealing partition channel (300) at the bottom of the side wall of the water tank (100) is adapted to allow the flexible partition (240) to pass through, and can automatically close and seal after the flexible partition (240) is rolled up.

6. The device for stratification of multilayer fluids according to claim 5, characterized in that, The self-sealing partition channel (300) includes an internal guide groove and a silicone sealing layer, forming a double-layer sealing structure to prevent leakage when the flexible partition passes through and to achieve self-closing after removal.

7. The device for realizing multilayer fluid stratification according to claim 1, characterized in that, The device can prepare two or more stepped layered structures, with the fluid density of each layer distributed in a gradient along the vertical direction and the interlayer interface clearly defined.

8. A method for achieving stratification of multilayer fluids, characterized in that, Based on the apparatus according to any one of claims 1-7, the method includes the following steps: S1. The control unit controls the vertical lifting drive unit (220) to lower the partition retraction drive unit (230) to the first floor preset height H1. S2, The control unit controls the partition retraction drive unit (230) to release the flexible partition (240). The flexible partition (240) extends through the self-sealing partition channel (300) to the inner wall of the other side of the water tank (100), forming a bottom closed area. S3. The control unit controls the pump valve corresponding to the inlet (110) to open and inject the first fluid of a preset density into the bottom closed area. After the injection is completed, the pump valve is closed. S4. The control unit controls the partition retraction drive unit (230) to retract the flexible partition (240). After the flexible partition (240) is removed, the first fluid is stably distributed at the bottom of the water tank. S5. Repeat steps S1-S4, control the vertical lifting drive unit (220) to raise the partition retraction drive unit (230) to the next preset height Hn, n≥2, inject the nth fluid with a density less than the previous layer into the newly formed closed area, and repeat the process to complete the layer preparation of multilayer fluid.

9. A method for achieving layering of multilayer fluids according to claim 8, characterized in that, In step S3, the injection time is set by the control unit or the injection volume of the first fluid and subsequent fluids is controlled by the feedback data from the flow meter to ensure that the thickness of each layer is uniform.

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