A fragrance separation apparatus based on a froth flotation structure

Abstract

The present application relates to the technical field of separation equipment, and discloses a fragrance separation equipment based on a froth flotation structure, which comprises a separation tower, a defoaming device for scraping off foam is arranged at the top end of the inner wall of the separation tower, a discharge port for discharging fragrance foam is arranged at the outer side of the top end of the separation tower, and a gas distributor is arranged at the bottom end of the separation tower, wherein the gas distributor comprises a perforated plate and a distribution plate arranged in a vertical mode, and the top end of the perforated plate is fixedly connected with the bottom end of the defoaming device. The present application is provided with a periodic change of the overlapping area of the small through hole and the large slot, which is equivalent to the dynamic adjustment of the cross-sectional area of the gas channel. The cross-sectional area change when the gas passes through will cause flow velocity fluctuation, so as to form turbulent flow in the hole channel. The flow velocity change causes pressure fluctuation, promotes the more uniform diffusion of the gas in the downstream space, avoids the formation of local high-pressure or low-pressure areas, and the indirect effect of the anti-blocking function on the gas flow will reduce the actual flow area due to the particle accumulation.

Description

Technical Field

[0001] This invention relates to the field of separation equipment technology, and specifically to a fragrance separation device based on a foam flotation structure. Background Technology

[0002] Consumers' increasing demands for the quality and safety of fragrances are driving continuous innovation in fragrance production processes. In the field of fragrance separation, equipment based on foam flotation structures is primarily the foam separator. Its core principle is to utilize the adsorption characteristics of surfactants at the gas-liquid interface, achieving separation by using bubbles to carry the target components. The foam separator consists of a separation tower, a gas distributor, a foam collector, and a liquid level control system. The separation tower has a gas distributor at the bottom and a foam outlet at the top. The fragrance solution to be separated is input from the bottom of the tower. The gas passes through the distributor, forming bubbles. Surfactants are adsorbed onto the bubble surface and rise with the bubbles to the top of the tower, forming a foam layer. After defoaming, the concentrated fragrance components are obtained, and the remaining liquid is discharged from the bottom of the tower.

[0003] In existing fragrance separation technologies, because the solution to be separated contains solid particles (such as fragrance production residues and suspended solids), these particles are directly intercepted at the micropores of the gas distributor due to the interception effect of the material. The particles, larger than the pore size, are then deposited by sedimentation or collision in the low-velocity region of the distributor's boundary layer due to hydrodynamic forces. Simultaneously, adhesion is achieved through viscous adsorption, relying on van der Waals forces or hydrogen bonds between the organic matter on the particle surface and the distributor material. Under these multiple effects, the continuous deposition of solid particles leads to pore blockage, resulting in uneven pore size distribution during gas passage. This, in turn, increases the dispersion of bubble size, causing significant differences in size. Furthermore, the reduction in effective ventilation area leads to a decrease in total ventilation volume, which in turn reduces the amount of bubble generated. The gas-liquid mass transfer area is significantly reduced, ultimately resulting in a decrease in the adsorption efficiency of essential oil components on the bubble surface, severely affecting the separation effect. Summary of the Invention

[0004] Technical problems to be solved

[0005] To address the aforementioned shortcomings of existing technologies, this invention provides a fragrance separation device based on a foam flotation structure, which can effectively solve the problem that solid particles in the solution to be separated in existing technologies are deposited in the micropores of the distributor due to throttling, hydrodynamics, and viscous adsorption, leading to pore blockage and ultimately reducing the adsorption efficiency of essential oil components.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] This invention provides a fragrance separation device based on a foam flotation structure, comprising:

[0008] A separation tower, wherein a defoaming device for scraping off foam is provided at the top of the inner wall of the separation tower, an outlet for discharging fragrance foam is provided on the outer side of the top of the separation tower, and a gas distributor is provided at the bottom of the separation tower;

[0009] The gas distributor includes a perforated plate and a distribution plate placed vertically. The top of the perforated plate is fixedly connected to the bottom of the defoaming device. When the defoaming device moves to remove foam, it also drives the perforated plate to move. The perforated plate and the distribution plate move relative to each other to ensure smooth ventilation channels.

[0010] The bottom of the porous plate is provided with a flexible layer for wiping the distribution plate.

[0011] Furthermore, the defoaming device includes a driving component disposed at the top center of the outlet, a defoaming component fixedly connected to the bottom end of the driving component, and a connecting rod fixedly connected to the bottom center of the defoaming component.

[0012] Furthermore, the bottom end of the connecting rod is fixedly connected to the middle of the top of the perforated plate, and a limiting groove is formed on the outer wall of the perforated plate.

[0013] Furthermore, the gas distributor includes a cylinder disposed at the bottom of the separation tower, the upper section of the inner wall of the cylinder is provided with a limiting ring that rotates in a sealing manner with the limiting groove, and the lower end of the inner wall of the cylinder is fixedly connected to the distribution plate.

[0014] Furthermore, the gas distributor also includes a small through hole in the middle of a perforated plate, the bottom end of which is fixedly connected to a flexible layer, and a connecting cylinder that is slidably sealed at the bottom end of the perforated plate, the bottom end of which is flexibly connected to the outer periphery of the top end of the distribution plate.

[0015] Furthermore, a large slot is provided in the middle of the distribution plate, and the size of the large slot is larger than the size of the small through hole.

[0016] Furthermore, a cleaning wiping plate is fixedly connected to the bottom end of the flexible layer. Both the upper and lower ends of the cleaning wiping plate are designed with bevels. The flexible layer and the inner wall of the cleaning wiping plate are provided with guide grooves with a connected inclined design.

[0017] The technical solution provided by this invention has the following advantages compared with the prior art:

[0018] This invention features a periodic change in the overlap area between small through-holes and large slots, equivalent to a dynamic adjustment of the gas channel cross-sectional area. The change in cross-sectional area as gas passes through causes flow velocity fluctuations, creating turbulence within the channel. These velocity changes lead to pressure fluctuations, promoting more uniform gas diffusion downstream and preventing the formation of localized high-pressure or low-pressure areas. Compared to traditional fixed-hole structures, which are prone to uneven flow area due to particle accumulation, the dynamic sliding structure reduces gas "deviation" through velocity changes. The anti-clogging function indirectly affects gas flow. Particle accumulation reduces the actual flow area, while the sliding structure, through mechanical movement, assists in clearing blockages, indirectly maintaining gas flow stability.

[0019] The relative motion between the porous plate and the distribution plate in this invention causes changes in the cross-sectional area of ​​the airflow, generating a pulsed airflow at the small through-holes. When the small through-holes approach the edge of the large slots, the airflow briefly accelerates to form a high-speed pulse, which can effectively blow away residual particles in the channels. At the maximum overlap area, the low-speed airflow ensures stable gas diffusion. This alternating pulsed and stable airflow pattern improves both gas-liquid mass transfer efficiency and self-cleaning capability.

[0020] The linkage design of the defoaming device and the gas distributor in this invention reduces independent driving components, lowers equipment complexity and energy consumption, and the flexible connection and sealed rotating structure balances movement flexibility and airtightness, avoiding gas leakage, while reducing mechanical wear and extending equipment service life.

[0021] The present invention is provided with a flexible layer. The elastic scraping of the flexible layer and the mechanical shearing force generated by the relative motion can effectively remove solid particles, such as fragrance residue and suspended matter, attached to the inner wall of the channel, thereby reducing the blockage rate of the ventilation channel. The periodic purging of the pulse airflow further reduces the risk of particle deposition, extends the continuous operation time of the equipment, and reduces the maintenance frequency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0024] Figure 2 This is a schematic cross-sectional view of the defoaming device according to an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the gas distributor structure according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of a perforated plate structure according to an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the bottom structure of the perforated plate according to an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the cleaning wiper structure according to an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the distribution plate structure according to an embodiment of the present invention.

[0030] The labels in the diagram represent: 1. Separation tower; 2. Discharge outlet; 3. Gas distributor; 31. Cylinder; 32. Perforated plate; 321. Limiting groove; 322. Small through hole; 323. Flexible layer; 324. Cleaning wiper; 325. Flow guide groove; 33. Connecting cylinder; 34. Distribution plate; 341. Large slot; 4. Defoaming device; 41. Driving component; 42. Defoaming component; 43. Connecting rod. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0032] The present invention will be further described below with reference to embodiments.

[0033] Example:

[0034] Please see Figures 1-7 This invention provides a technical solution for a fragrance separation device based on a foam flotation structure:

[0035] refer to Figure 1 and Figure 2 The device consists of a separation tower 1, a gas distributor 3, and a defoaming device 4. The gas distributor 3 is installed at the bottom of the separation tower 1, and the defoaming device 4 is installed at the top of the separation tower 1. An outlet 2 is installed on the side of the top of the separation tower 1. The defoaming device 4 includes a driving component 41 installed at the middle of the top of the outlet 2. A defoaming component 42 is fixedly connected to the bottom of the driving component 41, and a connecting rod 43 is fixedly connected to the middle of the bottom of the defoaming component 42.

[0036] The fragrance solution to be separated is fed into the bottom of separation tower 1. Gas passes through gas distributor 3 to form bubbles. Surface-active ingredients such as esters and terpenes are adsorbed on the surface of the bubbles. As the bubbles rise, a foam layer is formed at the top inside the separation tower 1. At this time, the defoaming device 4 located at the top inside the separation tower 1 breaks the foam structure by means of mechanical scraping, heating, ultrasound or chemical defoaming agents, causing the foam to break into a liquid rich in fragrance. Finally, the concentrated fragrance liquid is discharged and collected from the outlet 2 on the side of the top of the separation tower 1, while the remaining liquid phase containing unadsorbed impurities is discharged from the bottom of the tower or recycled, thereby achieving the separation of fragrance and impurities.

[0037] Existing gas distributors often employ a porous design, aiming to increase the gas-liquid contact area and improve mass transfer efficiency by forming microbubbles. However, when processing solutions containing solid particles such as fragrance residues, plant fibers, and waxy suspensions, these particles tend to deposit within the pores. The main reasons for this include: firstly, physical retention—when particle size exceeds the pore diameter or aggregates form, they directly block the pores; secondly, hydrodynamic effects—the low velocity of the boundary layer fluid on the distributor surface causes particles to collide with and adhere to the pore walls under gravity, Brownian motion, or inertia; and thirdly, viscous adsorption—the presence of van der Waals forces, hydrogen bonds, or electrostatic attraction between organic matter on the particle surface (such as polysaccharides and proteins) and the distributor material strengthens the bonding stability between the particles and the pore walls. This deposition phenomenon reduces the effective ventilation area of ​​the pores, leading to uneven pore size distribution as gas passes through. This, in turn, causes a significant increase in bubble size dispersion, increasing the proportion of large bubbles and reducing the gas-liquid mass transfer area. Simultaneously, the reduced total ventilation volume decreases bubble generation, decreasing the adsorption efficiency of essential oil components on the bubble surface. In severe cases, this can lead to a reduction in separation efficiency, reduced equipment throughput, and frequent downtime for cleaning, increasing maintenance costs and the risk of production interruption. Therefore, this invention provides a novel gas distributor 3.

[0038] refer to Figure 3 , Figure 4 and Figure 7The gas distributor 3 includes a perforated plate 32 and a distribution plate 34 placed vertically. The top of the perforated plate 32 is fixedly connected to the bottom of the defoaming device 4. When the defoaming device 4 moves to remove foam, it also drives the perforated plate 32 to move. The perforated plate 32 and the distribution plate 34 move relative to each other to ensure smooth ventilation. The gas distributor 3 includes a cylinder 31 set at the bottom of the separation tower 1. The upper section of the inner wall of the cylinder 31 is provided with a limiting ring that rotates in a sealing manner with the limiting groove 321. The lower end of the inner wall of the cylinder 31 is fixedly connected to the distribution plate 34. The gas distributor 3 also includes a small through hole 322 in the middle of the perforated plate 32. The bottom end of the small through hole 322 is fixedly connected to the flexible layer 323. A connecting cylinder 33 is slidably sealed at the bottom end of the perforated plate 32. The bottom end of the connecting cylinder 33 is flexibly connected to the outer periphery of the top of the distribution plate 34. A large slot 341 is opened in the middle of the distribution plate 34. The size of the large slot 341 is larger than the size of the small through hole 322.

[0039] When the defoaming device 4 performs foam removal actions such as mechanical scraping or rotational defoaming, it transmits the motion force to the top of the perforated plate 32 that is fixedly connected to it. The perforated plate 32 achieves stable rotation through the sealing rotational cooperation between the limiting ring on the upper section of the inner wall of the cylinder 31 and the limiting groove 321. During the movement, the small through hole 322 in the middle of the perforated plate 32 slides above the large slot 341 of the distribution plate 34. Because the size of the large slot 341 is larger than the size of the small through hole 322, and the perforated plate 32 and the distribution plate 34 maintain relative movement, the overlap area between the small through hole 322 and the large slot 341 changes periodically. The connecting cylinder 33 slides in a sealed manner at the bottom of the perforated plate 32, and its bottom end is flexibly connected to the distribution plate 34 with materials such as rubber or silicone to ensure that there is no gas leakage during relative movement, and to provide movement buffer and guidance for the perforated plate 32. The flexible layer 323 fixed at the bottom of the small through hole 322, such as elastic silicone or polytetrafluoroethylene film, deforms during movement as the overlap position of the small through hole 322 and the large slot 341 changes. When the small through hole 322 slides to the edge of the large slot 341, the flexible layer 323 is squeezed by the inner wall of the large slot 341, expands outward and adheres tightly to the slot wall, forming a dynamic seal and scraping off the attached particles; when the small through hole 322 returns to the center of the large slot 341, the flexible layer 323 returns to its original shape.

[0040] The periodic change in the overlap area between the small through-hole 322 and the large slot 341 is equivalent to the dynamic adjustment of the gas channel cross-sectional area. The small through-hole 322 and the large slot 341 together form the channel. When the overlap area decreases, the gas flow velocity increases significantly according to Bernoulli's principle, causing bubbles to be sheared and broken into smaller particles as they pass through, increasing the gas-liquid contact area and improving mass transfer efficiency. When the overlap area increases, the gas flow rate increases, maintaining a stable overall ventilation volume. This dynamic adjustment makes the bubble particle size distribution more uniform and reduces dispersion, avoiding the airflow unevenness problem caused by local blockage in traditional fixed-aperture distributors. The dynamic change in the flow area due to airflow scouring and particle suspension leads to a periodic increase in gas velocity. High-speed airflow can generate a stronger scouring force on accumulated particles. When the overlap area decreases, the gas velocity increases, forming a "pulsating" airflow that suspends particles and carries them out of the channel. Enhanced turbulence also helps particles remain suspended, reducing the probability of deposition. The size difference between the large slot 341 and the small through hole 322 forms a "buffer space" that allows particles to fall into the bottom of the large slot 341 during sliding, preventing them from getting stuck in the channel.

[0041] Changes in the cross-sectional area of ​​gas as it passes through induce velocity fluctuations, creating turbulence within the channel. These velocity variations lead to pressure fluctuations, promoting more uniform gas diffusion downstream and preventing the formation of localized high-pressure or low-pressure areas. Compared to traditional fixed-orifice structures, which are prone to uneven flow area due to particle accumulation, dynamic sliding structures reduce gas "deviation" through velocity changes. The anti-clogging function indirectly affects gas flow. Particle accumulation reduces the actual flow area, while the sliding structure, through mechanical movement, assists in clearing blockages, indirectly maintaining gas flow stability.

[0042] The change in airflow cross-sectional area caused by relative motion generates a pulsed airflow at the small through-hole 322. When the small through-hole 322 approaches the edge of the large slot 341, the airflow briefly accelerates to form a high-speed pulse, which can effectively blow away residual particles in the channel; while when the overlap area is at its maximum, the low-speed airflow ensures smooth gas diffusion. This alternating pulsed and smooth airflow pattern improves both gas-liquid mass transfer efficiency and self-cleaning capability.

[0043] Initially, the small through-holes 322 of the upper perforated plate 32 are perfectly aligned with the center of the large slots 341 of the lower distribution plate 34, forming a complete overlap. At this time, the overlap area between a single small through-hole 322 and the large slot 341 reaches its maximum value, corresponding to the largest gas flow area. When the upper perforated plate 32 rotates, the small through-holes 322 begin to slide along the edge of the large slot 341. During the movement, the edge of the small through-hole 322 always maintains a partial overlap with the edge of the large slot 341, avoiding airflow interruption caused by "closed holes". When one of the small through-holes 322 moves to one side from the center of the large slot 341, its edge forms a "transitional overlap" with the edge of the adjacent large slot 341 before completely separating from the original large slot 341, ensuring the continuity of gas transmission.

[0044] Without the need for additional adjustment devices, the structure itself achieves coordinated control of airflow speed, flow rate, and bubble particle size, adapting to solutions with different viscosities and surface tensions. This improves the equipment's versatility. Compared to traditional fixed-aperture distributors, this structure can enhance gas-liquid mass transfer efficiency and improve essential oil adsorption efficiency.

[0045] The linkage design of the defoaming device 4 and the gas distributor 3 reduces independent driving components, lowers equipment complexity and energy consumption, and the flexible connection and sealed rotating structure balances movement flexibility and airtightness, avoiding gas leakage, while reducing mechanical wear and extending equipment service life.

[0046] refer to Figure 5 and Figure 6 The bottom end of the perforated plate 32 is provided with a flexible layer 323 for wiping the distribution plate 34. The bottom end of the flexible layer 323 is fixedly connected to a cleaning wiping plate 324. Both the upper and lower ends of the cleaning wiping plate 324 are designed with bevels. The inner walls of the flexible layer 323 and the cleaning wiping plate 324 are provided with guide grooves 325 with connected inclined designs.

[0047] When the porous plate 32 rotates under the drive of the defoaming device 4, the flexible layer 323 at its bottom end moves synchronously with the cleaning wipe plate 324. The flexible layer 323 is made of elastic materials such as silicone or fluororubber, allowing the cleaning wiper 324 to deform when it contacts the surface of the distribution plate 34, ensuring a tight fit. The inclined surfaces at the top and bottom of the cleaning wiper 324 are such that when the cleaning wiper 324 approaches the distribution plate 34 along with the perforated plate 32, the lower inclined surface contacts the plate surface first, and the upward elastic deformation caused by compression makes the wiper fit the surface of the distribution plate 34 as a whole. When leaving the contact area, the upper inclined surface is squeezed by the edge of the distribution plate 34, guiding the wiper to detach smoothly and avoiding damage from hard impact. The guide grooves 325 on the inner wall of the flexible layer 323 and the cleaning wiper 324 are connected and inclined. When the cleaning wiper 324 squeezes the distribution plate 34, the guide grooves 325 are compressed and narrowed, the internal gas flow rate increases, and a high-speed airflow is formed to sweep the plate surface. After leaving the compression area, the guide grooves 325 return to their original shape, the gas flow rate decreases, and pressure fluctuations are formed, which enhances the peeling effect on particles.

[0048] The elastic scraping of the flexible layer 323 and the mechanical shearing force generated by the relative motion can effectively remove solid particles such as fragrance residue and suspended matter attached to the inner wall of the channel, thereby reducing the blockage rate of the ventilation channel. The periodic purging of the pulse airflow further reduces the risk of particle deposition, extends the continuous operation time of the equipment, and reduces the maintenance frequency.

[0049] The wiping action of the cleaning plate 324 directly and physically removes particulate deposits from the surface and surrounding area of ​​the large slot 341, preventing particles from clogging the channels and maintaining a stable gas flow area. The outward expansion design increases the cleaning range, cleaning not only the inner walls of the large through holes but also the gaps between the large through holes, preventing particles from accumulating in these areas. By removing particles in a timely manner, the cleaning plate 324 effectively reduces gas flow resistance caused by particle accumulation, avoiding uneven gas flow and pressure loss caused by local blockage, and ensuring uniform and stable gas flow within the distributor.

[0050] The outward-expanding guide groove 325 allows the cleaning blade 324 to fit tightly against the inner wall of the large slot 341 when deformed, effectively removing stubborn particles such as wax and gel deposits, improving cleaning efficiency. The elastic connection prevents the cleaning blade 324 from being damaged due to excessive compression, while allowing a certain number of particles to embed into the surface of the cleaning blade 324, preventing scratches from hard particles. Combined with the airflow generated by the relative sliding of the large slot 341 and the small through hole 322, a dual cleaning mode of "mechanical scraping + airflow blowing" is formed, further reducing the risk of particle deposition and extending the service life of the gas distributor 3.

[0051] The cleaned large slot 341 ensures that the gas passes through at the designed flow rate and velocity, avoiding uneven gas distribution caused by channel blockage or partial blockage, thereby improving the uniformity of gas distribution and process stability of the entire gas distributor 3. During the wiping process, the cleaning plate 324 collects particles and carries them out of the channel area with them, reducing the secondary agitation of particles under the action of airflow and avoiding secondary contamination of other channels or affecting gas quality.

[0052] Without the need for additional cleaning equipment or manual intervention, the cleaning wiper 324 automatically cleans the large through holes through the rotation of the perforated plate 32, greatly reducing the maintenance cost and frequency of the equipment. The flexible connection allows the cleaning wiper 324 to adapt to the minor unevenness of the surface of the large slot 341, as well as dimensional changes caused by factors such as thermal expansion and contraction during rotation, thus maintaining a good cleaning effect at all times.

[0053] The combination of the cleaning plate 324, the large slot 341, and the small through hole 322 fundamentally solves the problem of particulate blockage affecting gas distribution. It also forms a synergistic effect with the flow regulation and anti-blockage functions of the large slot 341 and the small through hole 322, further improving the overall performance of the gas distributor 3.

[0054] When the upper perforated plate 32 rotates, the small through-hole 322 slides above the large slot 341. Since the large slot 341 and the small through-hole 322 always maintain partial overlap, and the gap between the large slots 341 is smaller than the size of the small through-hole 322, the effective area for gas passage changes dynamically but is not completely blocked. During rotation, the overlap area between the small through-hole 322 and the large slot 341 changes periodically, creating an effect similar to "throttling-expansion." When the overlap area decreases, the gas flow velocity increases instantaneously. According to Bernoulli's equation, when the flow rate remains constant, a decrease in cross-sectional area leads to an increase in velocity, causing the bubbles to shear and break up, generating finer, more uniform bubbles. When the overlap area increases, the gas flow rate increases, ensuring the overall ventilation volume remains stable. This dynamic adjustment mechanism reduces the bubble size dispersion and improves the gas-liquid mass transfer efficiency.

[0055] During the sliding process of the small through-hole 322, its edge moves relative to the inner wall of the large slot 341, mechanically scraping away particles accumulated at the edge of the channel. When the small through-hole 322 passes the edge of the large slot 341, the particles are pushed towards the edge area of ​​the large slot 341 due to the imbalance of forces, preventing particles from remaining in the channel for a long time. In addition, the gas velocity fluctuation caused by the change in the overlapping area of ​​the large and small holes generates a pulsed airflow, which can effectively blow away loose particles attached to the hole wall and reduce the probability of deposition.

[0056] Continuous ventilation stability avoids ventilation interruption problems caused by local blockage in traditional gas distributors, ensuring a continuous and stable separation process and reducing the decrease in essential oil adsorption efficiency caused by ventilation fluctuations; by dynamically adjusting the gas flow rate and bubble particle size through changes in the overlapping area, it can adapt to solutions with different viscosities and surface tensions, improving the equipment's versatility; the shear force generated by relative sliding and the synergistic effect of airflow fluctuations suppress particle deposition, reducing maintenance frequency and downtime costs.

[0057] In summary, this structure, through the synergistic effect of multiple mechanisms, significantly improves anti-clogging performance and cleaning efficiency while ensuring stable gas generation, providing an efficient and reliable solution for gas-liquid mass transfer processes such as essential oil separation. The porous plate 32 structure design, through the matching of large slots 341 and small through-holes 322, and the linkage between rotational motion and the cleaning wiper 324, not only achieves overall dynamic adjustment of airflow but also enables precise processing of individual through-holes thanks to its unique structural details.

[0058] This structure achieves comprehensive optimization from the overall structure to individual through-holes through the combination of large slots 341 and small through-holes 322, and the synergy of rotational motion and cleaning wipers 324. It balances overall ventilation stability with precise adjustment of individual through-holes, thereby improving gas-liquid mass transfer efficiency. The combination of mechanical scraping, airflow purging, and point cleaning prevents clogging and cleans each through-hole. It can dynamically adjust airflow parameters according to solution characteristics to adapt to different separation requirements. It reduces efficiency degradation caused by particle deposition, extends the service life of the gas distributor 3, and reduces maintenance costs.

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fragrance separation device based on a foam flotation structure, characterized in that, include: A separation tower (1) is provided with a defoaming device (4) for scraping foam at the top of the inner wall of the separation tower (1), and an outlet (2) for discharging fragrance foam is provided on the outer side of the top of the separation tower (1). A gas distributor (3) is provided at the bottom of the separation tower (1). The gas distributor (3) includes a perforated plate (32) and a distribution plate (34) placed vertically. The top of the perforated plate (32) is fixedly connected to the bottom of the defoaming device (4). When the defoaming device (4) moves to remove foam, it also drives the perforated plate (32) to move. The perforated plate (32) and the distribution plate (34) move relative to each other to ensure smooth ventilation channels. The gas distributor (3) also includes a small through hole (322) in the middle of the perforated plate (32), and a large slot (341) in the middle of the distribution plate (34), the size of the large slot (341) being larger than the size of the small through hole (322); The bottom end of the porous plate (32) is provided with a flexible layer (323) for wiping the distribution plate (34).

2. The fragrance separation device based on a foam flotation structure according to claim 1, characterized in that: The defoaming device (4) includes a drive component (41) located at the top center of the outlet (2), a defoaming component (42) fixedly connected to the bottom end of the drive component (41), and a connecting rod (43) fixedly connected to the bottom center of the defoaming component (42).

3. The fragrance separation device based on a foam flotation structure according to claim 2, characterized in that: The bottom end of the connecting rod (43) is fixedly connected to the middle of the top end of the perforated plate (32), and a limiting groove (321) is provided on the outer wall of the perforated plate (32).

4. The fragrance separation device based on a foam flotation structure according to claim 3, characterized in that: The gas distributor (3) includes a cylinder (31) disposed at the bottom of the separation tower (1). The upper section of the inner wall of the cylinder (31) is provided with a limiting ring that rotates in a sealing manner with the limiting groove (321). The lower end of the inner wall of the cylinder (31) is fixedly connected to the distribution plate (34).

5. The fragrance separation device based on a foam flotation structure according to claim 1, characterized in that: The bottom end of the small through hole (322) is fixedly connected to the flexible layer (323), and the bottom end of the porous plate (32) is sealed and slidably connected to the connecting cylinder (33), and the bottom end of the connecting cylinder (33) is flexibly connected to the outer periphery of the top end of the distribution plate (34).

6. The fragrance separation device based on a foam flotation structure according to claim 5, characterized in that: The bottom end of the flexible layer (323) is fixedly connected to a cleaning wiping plate (324). Both the upper and lower ends of the cleaning wiping plate (324) are designed with bevels. The inner walls of the flexible layer (323) and the cleaning wiping plate (324) are provided with guide grooves (325) with connected inclined designs.

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