Essence separation equipment based on foam flotation structure

Abstract

The invention relates to the technical field of separation equipment, and discloses essence separation equipment based on a foam flotation structure, which comprises a separation tower, a defoaming device arranged at the top end of the inner wall of the separation tower and used for scraping foam, a discharge port arranged on the outer side of the top end of the separation tower and used for discharging essence foam, and a gas distributor arranged at the bottom end of the separation tower, the gas distributor comprises a perforated plate and a distribution plate which are arranged up and down; the top end of the perforated plate is fixedly connected with the bottom end of the defoaming device. Periodic change of the overlapping area of the small through holes and the large open grooves is equivalent to dynamic adjustment of the sectional area of a gas channel, the change of the sectional area when gas passes can cause flow velocity fluctuation, so that turbulent flow is formed in the hole channel, the change of the flow velocity causes pressure fluctuation, the gas is promoted to be diffused more uniformly in a downstream space, and the gas diffusion efficiency is improved. And the formation of a local high-pressure or low-pressure area is avoided, and the actual through-flow area can be reduced due to particle accumulation under the indirect action of the anti-blocking function on gas flow.

Description

Technical Field

[0001] The present invention relates to the technical field of separation equipment, and in particular to an essence separation equipment based on a foam flotation structure. Background Art

[0002] Consumers' increasing demands for flavor quality and safety are driving continuous innovation in flavor production processes. In the field of flavor separation, foam flotation-based equipment primarily involves the foam separator. Its core principle is to leverage the adsorption properties of surfactants at the gas-liquid interface, allowing bubbles to carry the target components for separation. The foam separator consists of a separation tower, a gas distributor, a foam collector, and a liquid level control system. The gas distributor is located at the bottom of the separation tower, and a foam outlet is located at the top. The flavor solution to be separated is introduced into the tower from the bottom, where gas passes through the distributor to form bubbles. Surfactants adsorb on the bubble surfaces and rise to the top of the tower, forming a foam layer. Defoaming the foam layer yields concentrated flavor components, and the remaining liquid is discharged from the bottom of the tower.

[0003] In existing flavor separation technology, since the solution to be separated contains solid particles (such as flavor production residues and suspended matter), these particles will directly intercept particles with a particle size larger than the pore size at the micropores of the gas distributor 3 due to the interception effect of the object. Due to the effect of fluid mechanics, the particles settle or collide and deposit in the low-speed area of ​​the boundary layer on the surface of the distributor. At the same time, with the help of viscous adsorption, they adhere to the distributor material through 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 when gas passes through, which in turn causes the discreteness of bubble particle size to increase, with significant size differences. In addition, the reduction in effective ventilation area leads to a decrease in total ventilation volume, which in turn reduces the amount of bubble generation, significantly reducing the gas-liquid mass transfer area, and ultimately reducing the adsorption efficiency of essential oil components on the bubble surface, seriously affecting the separation effect. Summary of the Invention

[0004] Technical problems solved

[0005] In response to the above-mentioned shortcomings of the prior art, the present invention provides an essence separation equipment based on a foam flotation structure, which can effectively solve the problem in the prior art that solid particles in the solution to be separated are deposited in the distributor micropores due to throttling, fluid mechanics and viscous adsorption, resulting in pore blockage and ultimately a decrease in the adsorption efficiency of essential oil components.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The present invention provides an essence separation device based on a foam flotation structure, comprising:

[0008] A separation tower, wherein the top of the inner wall of the separation tower is provided with a defoaming device for scraping off the foam, the outer side of the top of the separation tower is provided with a discharge port for removing the essence foam, and the bottom of the separation tower is provided with a gas distributor;

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

[0010] Wherein, a flexible layer for wiping the distribution plate is provided at the bottom end of the porous plate.

[0011] Furthermore, the defoaming device includes a driving member arranged in the middle of the top end of the discharge outlet, the bottom end of the driving member is fixedly connected to the defoaming member, and the middle of the bottom end of the defoaming member is fixedly connected to a connecting rod.

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

[0013] Furthermore, the gas distributor includes a cylinder arranged at the bottom end of the separation tower, the upper section of the inner wall of the cylinder is provided with a limiting ring that is sealed and rotated 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 the porous plate, the bottom of the small through hole is fixedly connected to the flexible layer, the bottom of the porous plate is sealed and slidably provided with a connecting tube, and the bottom of the connecting tube is flexibly connected to the outer periphery of the top of the distribution plate.

[0015] Furthermore, a large slot is opened 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 wipe is fixedly connected to the bottom end of the flexible layer, and both upper and lower ends of the cleaning wipe are designed with inclined surfaces. The flexible layer and the inner wall of the cleaning wipe are provided with guide grooves with a connected inclined design.

[0017] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0018] The present invention is provided with a periodic change in the overlapping area of ​​small through holes and large slots, which is equivalent to the dynamic adjustment of the cross-sectional area of ​​the gas channel. The change in cross-sectional area when the gas passes through will cause flow velocity fluctuations, thereby forming turbulence in the channel. The change in flow velocity leads to pressure fluctuations, which prompts the gas to diffuse more evenly in the downstream space, avoiding the formation of local high-pressure or low-pressure areas. Compared with the traditional fixed hole structure, the traditional fixed hole is prone to uneven flow area due to particle accumulation, while the dynamic sliding structure reduces the gas "bias flow" phenomenon through flow velocity changes. The indirect effect of the anti-blocking function on gas flow Particle accumulation will reduce the actual flow area, and the sliding structure can assist in clearing blockages through mechanical movement, indirectly maintaining the stability of gas flow.

[0019] The relative movement of the porous plate and the distribution plate in this invention causes changes in the cross-sectional area of ​​the airflow, generating pulsed airflow at the small through-holes. When the small through-holes approach the edges of the large slots, the airflow briefly accelerates to form high-speed pulses, effectively sweeping away any remaining particles within the channels. When the overlap area is maximized, the low-speed airflow ensures smooth gas diffusion. This alternating pattern of pulses and steady flow improves both gas-liquid mass transfer efficiency and self-cleaning capabilities.

[0020] The linkage design of the defoaming device and the gas distributor in the present invention reduces independent driving components, reduces equipment complexity and energy consumption, and the flexible connection and sealed rotating structure take into account both movement flexibility and air tightness, avoiding gas leakage, while reducing mechanical wear and extending the service life of the equipment.

[0021] The present invention is provided with a flexible layer. The elastic scraping of the flexible layer and the mechanical shear force generated by the relative movement can effectively remove solid particles attached to the inner wall of the channel, such as flavor residues and suspended matter, thereby reducing the blockage rate of the ventilation channel. The periodic purge of the pulse airflow further reduces the risk of particle deposition, prolongs the continuous operation time of the equipment, and reduces the maintenance frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0023] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention;

[0024] Figure 2 Schematic diagram of the cross-section structure of a defoaming device according to an embodiment of the present invention;

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

[0026] Figure 4 A schematic diagram of the porous plate structure according to an embodiment of the present invention;

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

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

[0029] Figure 7 Schematic diagram of the distribution plate structure of an embodiment of the present invention.

[0030] The numbers in the figure represent: 1. Separation tower; 2. Exhaust port; 3. Gas distributor; 31. Cylinder; 32. Perforated plate; 321. Limiting groove; 322. Small through hole; 323. Flexible layer; 324. Cleaning wiper; 325. Guide groove; 33. Connecting cylinder; 34. Distribution plate; 341. Large slot; 4. Defoaming device; 41. Driving part; 42. Defoaming part; 43. Connecting rod. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

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

[0033] Example:

[0034] See also Figure 1-Figure 7 , the present invention provides a technical solution for essence separation equipment based on 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 provided at the bottom end of the separation tower 1, the defoaming device 4 is provided at the top end of the separation tower 1, and a discharge port 2 is provided on the top side of the separation tower 1. The defoaming device 4 includes a driving member 41 provided in the middle of the top end of the discharge port 2, the bottom end of the driving member 41 is fixedly connected to the defoaming member 42, and the middle of the bottom end of the defoaming member 42 is fixedly connected to the connecting rod 43.

[0036] The flavor solution to be separated is input from the bottom of the separation tower 1, and the gas forms bubbles through the gas distributor 3. The surfactant components such as esters and terpenoid flavors are adsorbed on the surface of the bubbles. As the bubbles continue to rise, a foam layer is formed at the top of the separation tower 1. At this time, the defoaming device 4 located at the top of the separation tower 1 destroys the foam structure through mechanical scraping, heating, ultrasound or chemical defoaming agents, so that the foam breaks into a liquid rich in flavor. Finally, the concentrated flavor liquid is discharged and collected from the discharge port 2 on the side of the top of the separation tower 1, and the remaining liquid phase containing unadsorbed impurities is discharged from the bottom of the tower or recycled for treatment, thereby achieving the separation of flavor and impurities.

[0037] The gas distributor 3 in the prior art mostly adopts a porous design, which aims to increase the gas-liquid contact area and improve the mass transfer efficiency by forming tiny bubbles. However, when treating solutions to be separated containing solid particles such as essence residues, plant fibers, and waxy suspended matter, the particles are easily deposited in the pores. The main reasons include: first, physical interception. When the particle size is larger than the pore diameter or forms aggregates, the pores will be directly blocked; second, the fluid mechanics effect. The boundary layer fluid velocity on the distributor surface is low, and the particles collide and adhere to the pore wall under the action of gravity, Brownian motion or inertia; third, viscous adsorption. There is van der Waals force, hydrogen bond or electrostatic attraction between the organic matter on the particle surface, such as polysaccharides and proteins, and the distributor material, which enhances the binding stability between the particles and the pore wall. This sedimentation phenomenon reduces the effective ventilation area of ​​the pores, resulting in uneven pore size distribution when gas passes through, which in turn significantly increases the discreteness of bubble size. The increased proportion of large bubbles leads to a decrease in the gas-liquid mass transfer area. Simultaneously, the reduced total ventilation volume reduces bubble generation, reducing the adsorption efficiency of essential oil components on the bubble surface. In severe cases, this can lead to a greater reduction in separation efficiency, a reduction in equipment throughput, and the need for frequent downtime and cleaning, increasing operation and maintenance costs and the risk of production interruptions. In view of this, the present invention provides a new gas distributor 3.

[0038] refer to Figure 3 、 Figure 4 and Figure 7The gas distributor 3 includes a porous plate 32 and a distribution plate 34 placed up and down. The top of the porous plate 32 is fixedly connected to the bottom end of the defoaming device 4. When the defoaming device 4 moves to remove foam, it will also drive the porous plate 32 to move. The porous plate 32 and the distribution plate 34 move relative to each other to ensure the smoothness of the ventilation channel. The gas distributor 3 includes a cylinder 31 arranged at the bottom end of the separation tower 1, and the upper section of the inner wall of the cylinder 31 is provided with a limiting ring that rotates in a sealed 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 porous plate 32, and the bottom end of the small through hole 322 is fixedly connected to the flexible layer 323. The bottom end of the porous plate 32 is sealed and slidably provided with a connecting tube 33. The bottom end of the connecting tube 33 is flexibly connected to the outer periphery of the top end of the distribution plate 34. A large slot 341 is provided in the middle of the distribution plate 34, and 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 and rotary defoaming, the kinetic force is transmitted to the top of the porous plate 32 fixed to it. The porous plate 32 realizes stable rotation through the sealing rotation of the limiting ring and the limiting groove 321 on the upper section of the inner wall of the cylinder 31. During the movement, the small through hole 322 in the middle of the porous plate 32 slides above the large slot 341 of the distribution plate 34. Since the size of the large slot 341 is larger than that of the small through-hole 322, and the porous plate 32 and the distribution plate 34 maintain relative movement, the overlapping area of ​​the small through-hole 322 and the large slot 341 changes periodically. The connecting tube 33 slides sealed at the bottom end of the porous plate 32, and at the same time, its bottom end is flexibly connected to the distribution plate 34, such as rubber or silicone material, to ensure that gas does not leak during relative movement, and provide movement buffering and guidance for the porous plate 32. The flexible layer 323 fixed at the bottom end of the small through-hole 322, such as elastic silicone or polytetrafluoroethylene film, deforms during movement as the overlapping 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 to the slot wall, forming a dynamic seal and scraping off 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 state.

[0040] The periodic change in the overlapping area between the small through-hole 322 and the large slot 341 is equivalent to the dynamic adjustment of the cross-sectional area of ​​the gas channel. The small through-hole 322 and the large slot 341 together form a channel. When the overlapping area decreases, the gas flow rate increases significantly according to the Bernoulli principle, causing the bubbles to be sheared and broken into smaller particles during passage, increasing the gas-liquid contact area and improving the mass transfer efficiency. When the overlapping area increases, the gas flow rate increases, maintaining the overall ventilation volume stable. This dynamic adjustment makes the bubble particle size distribution more uniform and reduces the discreteness, avoiding the uneven airflow problem caused by local blockage in traditional fixed aperture distributors. The dynamic change of the flow area for airflow scouring and particle suspension causes the gas flow rate to increase periodically. High-speed airflow can generate a stronger scouring force on accumulated particles. When the overlapping area decreases, the gas flow rate increases, forming a "pulsed" airflow, which suspends the particles and carries them out of the channel. The enhanced turbulence also helps the 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", and particles can fall into the bottom of the large slot 341 during sliding to avoid being stuck in the channel.

[0041] Changes in cross-sectional area during gas flow cause flow velocity fluctuations, creating turbulence within the pores. These changes in flow velocity lead to pressure fluctuations, prompting the gas to diffuse more evenly in the downstream space, thus avoiding the formation of localized high- or low-pressure areas. Compared to traditional fixed-hole structures, which are prone to uneven flow areas due to particle accumulation, the dynamic sliding structure reduces gas "biased flow" by varying the flow velocity. The indirect effect of the anti-clogging function on gas flow: Particle accumulation reduces the actual flow area, while the sliding structure can indirectly maintain gas flow stability by assisting in clearing blockages through mechanical movement.

[0042] The change in airflow cross-sectional area caused by relative motion generates 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, effectively sweeping away any remaining particles within the hole. When the overlap area is maximized, the low-speed airflow ensures smooth gas diffusion. This alternating pattern of pulses and steady flow improves both gas-liquid mass transfer efficiency and self-cleaning capabilities.

[0043] In the initial state, the small through holes 322 of the upper porous plate 32 are strictly aligned with the center of the large slot 341 of the lower distribution plate 34, forming a completely overlapping state. At this time, the overlapping area of ​​a single small through hole 322 and the large slot 341 reaches the maximum value, corresponding to the maximum gas flow area; when the upper porous plate 32 rotates, the small through hole 322 begins to slide along the edge of the large slot 341. During the movement, the edge of the small through hole 322 always maintains partial overlap with the edge of the large slot 341 to avoid 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 "transition overlap" with the edge of the adjacent large slot 341 before it completely separates from the original large slot 341, ensuring the continuity of gas transmission.

[0044] No additional adjustment device is required. The coordinated regulation of airflow velocity, flow rate, and bubble particle size can be achieved through the movement of the structure itself. It is adaptable to solutions to be separated with different viscosities and surface tensions, and the versatility of the equipment is improved. Compared with traditional fixed-pore size distributors, this structure can improve the gas-liquid mass transfer efficiency and the essential oil adsorption efficiency.

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

[0046] refer to Figure 5 and Figure 6 A flexible layer 323 is provided at the bottom of the porous plate 32 for wiping the distribution plate 34. A cleaning wiper 324 is fixedly connected to the bottom of the flexible layer 323. The upper and lower ends of the cleaning wiper 324 are both designed with inclined surfaces. The inner walls of the flexible layer 323 and the cleaning wiper 324 are provided with guide grooves 325 with a connected inclined design.

[0047] When the porous plate 32 is driven by the defoaming device 4 to rotate, the flexible layer 323 at the bottom end thereof moves synchronously with the cleaning wiper 324 . The flexible layer 323 is made of elastic materials such as silicone and fluororubber, which allows the cleaning wiper 324 to deform when it contacts the surface of the distribution plate 34 to ensure a close fit; the inclined surfaces at the upper and lower ends of the cleaning wiper 324, when the cleaning wiper 324 approaches the distribution plate 34 along the porous plate 32, the lower inclined surface first contacts the plate surface, and the upward elastic deformation is generated due to the extrusion, so that the wiper fits 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 smoothly detach and avoid damage from hard collision; the flexible layer 323 and the guide groove 325 on the inner wall of the cleaning wiper 324 are connected and inclined. When the cleaning wiper 324 squeezes the distribution plate 34, the guide groove 325 is compressed and narrowed, and the internal gas flow rate increases, forming a high-speed airflow to sweep the plate surface; after leaving the extrusion area, the guide groove 325 returns to its original state, the gas flow rate decreases, forming a pressure fluctuation, and enhancing the stripping effect on particles.

[0048] The mechanical shear force generated by the elastic scraping and relative movement of the flexible layer 323 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 purge of the pulsed 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 wiper 324 directly and physically removes particle deposits from the surface and surrounding areas of the large slots 341, preventing particle blockage and maintaining a stable gas flow area. The outward-expanding 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 particle accumulation in these areas. By promptly removing particles, the cleaning wiper 324 effectively reduces the 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 enables the cleaning wiper 324 to fit tightly against the inner wall of the large groove 341 when deformed, effectively removing stubbornly attached particles such as wax and colloid deposits, thereby improving cleaning efficiency. The elastic connection prevents the cleaning wiper 324 from being damaged due to excessive extrusion, while allowing a certain amount of particles to be embedded in the surface of the cleaning wiper 324 to prevent scratches by hard particles. Combined with the airflow purge generated by the relative sliding of the large groove 341 and the small through-hole 322, a dual cleaning mode of "mechanical scraping + airflow purge" is formed, which further reduces the risk of particle deposition and extends the service life of the gas distributor 3.

[0051] The large slots 341 after cleaning can ensure that the gas passes through at the designed flow rate and flow rate, avoiding uneven gas distribution caused by blockage or partial blockage of the channel, thereby improving the gas distribution uniformity and process stability of the entire gas distributor 3. During the wiping process, the cleaning wiper 324 collects the particles and moves them out of the channel area, reducing the secondary flying of particles under the action of airflow, avoiding secondary pollution of other channels or affecting the gas quality.

[0052] The rotation of the porous plate 32 automatically cleans the large through-holes with the cleaning wiper 324, eliminating the need for additional cleaning equipment or manual intervention. This significantly reduces maintenance costs and frequency. The elastic connection allows the cleaning wiper 324 to adapt to even minor surface irregularities in the large slots 341, as well as dimensional changes caused by thermal expansion and contraction during rotation, ensuring consistent cleaning results.

[0053] The cooperation between the cleaning wiper 324, the large slot 341 and the small through hole 322 fundamentally solves the influence of particle blockage on gas distribution, and forms a synergistic effect with the flow regulation and anti-blocking functions of the large slot 341 and the small through hole 322 themselves, further improving the overall performance of the gas distributor 3.

[0054] When the upper porous plate 32 rotates, the small through-holes 322 slide over the large slots 341. Since the large slots 341 and the small through-holes 322 always partially overlap, and the gap between the large slots 341 is smaller than the size of the small through-holes 322, the effective area for gas passage changes dynamically but is not completely blocked. During the rotation process, the overlapping area of ​​the small through-holes 322 and the large slots 341 changes periodically, creating an effect similar to "throttling-expansion". When the overlapping area decreases, the gas flow rate increases instantaneously. According to the Bernoulli equation, when the flow rate remains unchanged, the cross-sectional area decreases and the flow rate increases, which promotes the shear breakage of bubbles and generates smaller and more uniform bubbles. When the overlapping area increases, the gas flow rate increases, ensuring the stability of the overall ventilation volume. This dynamic adjustment mechanism reduces the discreteness of bubble particle size and improves the gas-liquid mass transfer efficiency.

[0055] As small through-hole 322 slides, its edge moves relative to the inner wall of large slot 341, mechanically scraping particles that accumulate at the edge of the channel. As small through-hole 322 passes the edge of large slot 341, the unbalanced force pushes particles toward the edge of the large slot 341, preventing them from accumulating within the channel for extended periods. Furthermore, the fluctuating gas flow rate caused by the varying overlapping areas of the large and small holes creates a pulsed airflow that effectively sweeps away loose particles adhering to the hole walls, reducing the likelihood of deposition.

[0056] Continuous ventilation stability avoids the ventilation interruption problem caused by local blockage of the traditional gas distributor 3, ensures the continuity and stability of the separation process, and reduces the decline in essential oil adsorption efficiency caused by ventilation fluctuations; dynamically adjusts the gas flow rate and bubble particle size through the change of overlapping area, adapts to solutions to be separated with different viscosities and surface tensions, improves the versatility of the equipment, and the shear force generated by relative sliding works synergistically with airflow fluctuations to inhibit particle deposition, reducing maintenance frequency and downtime costs.

[0057] In summary, this structure, through the synergistic action of multiple mechanisms, not only ensures stable gas production but also significantly improves anti-clogging performance and cleaning efficiency, providing a highly efficient and reliable solution for gas-liquid mass transfer processes such as essential oil separation. The porous plate 32's structural design, through the coordinated apertures of large slots 341 and small through-holes 322, coupled with its rotational motion and linkage with the cleaning wiper 324, not only achieves dynamic regulation of the overall airflow but also, through unique structural details, enables precise processing of individual through-holes.

[0058] This structure achieves all-round optimization from the overall to the individual through-holes through the coordination of the large slots 341 and the small through-holes 322, and the synergy of the rotational motion and the cleaning wiper 324, taking into account the overall ventilation stability and the precise adjustment of the individual through-holes, thereby improving the gas-liquid mass transfer efficiency; mechanical scraping, airflow purge and fixed-point cleaning are combined to prevent blockage and clean each through-hole; the airflow parameters can be dynamically adjusted according to the characteristics of the solution to adapt to different separation requirements; the efficiency attenuation caused by particle deposition is reduced, the service life of the gas distributor 3 is extended, and the maintenance cost is reduced.

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A flavor separation device based on a foam flotation structure, characterized in that: include: A separation tower (1), wherein a defoaming device (4) for scraping off foam is provided at the top of the inner wall of the separation tower (1), an outlet (2) for removing essence foam is provided on the outer side of the top of the separation tower (1), and a gas distributor (3) is provided at the bottom of the separation tower (1); The gas distributor (3) includes a porous plate (32) and a distribution plate (34) placed one above the other. The top of the porous 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 porous plate (32) to move. The porous plate (32) and the distribution plate (34) move relative to each other to ensure smooth ventilation channels. Wherein, a flexible layer (323) for wiping the distribution plate (34) is provided at the bottom end of the porous plate (32).

2. The flavor separation device based on the foam flotation structure according to claim 1, characterized in that: The defoaming device (4) comprises a driving member (41) arranged in the middle of the top end of the discharge outlet (2); the bottom end of the driving member (41) is fixedly connected to a defoaming member (42); and the middle of the bottom end of the defoaming member (42) is fixedly connected to a connecting rod (43).

3. The flavor separation device based on the 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 porous plate (32), and a limiting groove (321) is provided on the outer wall of the porous plate (32).

4. The flavor separation device based on the foam flotation structure according to claim 3, characterized in that: The gas distributor (3) comprises a cylinder (31) arranged at the bottom end of the separation tower (1); a limiting ring is provided on the upper section of the inner wall of the cylinder (31) and is sealed and rotated with the limiting groove (321); and the lower end of the inner wall of the cylinder (31) is fixedly connected to the distribution plate (34).

5. The flavor separation equipment based on the foam flotation structure according to claim 1, characterized in that: The gas distributor (3) further comprises a porous plate (32) with a small through hole (322) in the middle thereof, the bottom end of the small through hole (322) being fixedly connected to the flexible layer (323), the bottom end of the porous plate (32) being sealed and slidably provided with a connecting tube (33), the bottom end of the connecting tube (33) being flexibly connected to the outer periphery of the top end of the distribution plate (34).

6. The flavor separation device based on the foam flotation structure according to claim 5, characterized in that: A large slot (341) is provided in the middle of the distribution plate (34), and the size of the large slot (341) is larger than the size of the small through hole (322).

7. The flavor 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 wiper (324), and both upper and lower ends of the cleaning wiper (324) are designed with inclined surfaces. The inner walls of the flexible layer (323) and the cleaning wiper (324) are provided with guide grooves (325) with a connected inclined design.

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