Spice low-temperature extraction and concentration integrated system

Abstract

The invention relates to the technical field of low-temperature extraction, in particular to a spice low-temperature extraction and concentration integrated system which comprises a reaction kettle, an air inlet bin is arranged at the top of the reaction kettle, and a fluid pipe is arranged on the outer side of the air inlet bin; a hollow main shaft is arranged in the reaction kettle; a through hole is formed in the outer side of one end, extending into the air inlet bin, of the main shaft; fixing pieces distributed in an array mode are arranged on the main shaft, and swing pieces are arranged on the outer sides of the fixing pieces; a conducting part is arranged on the fixed part and is used for conveying the supercritical fluid into the cavity of the swinging part; movable heads are distributed on the outer surface of the swinging part in an array manner; cOfluid entering the air inlet bin enters the flow guide channel of the fixed part through the transmission of the through hole and the main shaft, then enters the cavity of the swinging part through the guide of the hole channel, and finally is sprayed out from the movable head to enter material layers of different heights of the reaction kettle, so that the contact range of the fluid and raw materials is enlarged, and the extraction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of low-temperature extraction technology, in particular to a low-temperature extraction and concentration integrated system for spices. BACKGROUND

[0002] As a new green separation method, supercritical fluid extraction technology has significant environmental friendliness and high efficiency. Among them, supercritical CO2 extraction technology uses CO2 as a solvent, and takes advantage of the high density and high dielectric constant of CO2 fluid in the supercritical state to exhibit strong solubility to a variety of substances. Its separation rate far exceeds that of traditional liquid extraction, and the solubility changes sharply with the adjustment of pressure and temperature, not only having the advantage of selective dissolution of specific substances, but also being able to achieve efficient separation of solvent and extract.

[0003] In the operation of the existing extraction device, the supercritical fluid is usually introduced from the bottom of the extraction kettle, contacts the material, extracts the effective components, and then is discharged from the top to the subsequent processing unit. However, this downward and upward fluid flow mode often leads to insufficient contact between the fluid and the material, thereby affecting the extraction efficiency and making the extraction effect unsatisfactory.

[0004] A supercritical extraction reaction kettle is disclosed in Chinese patent CN202210844037.7, which includes a kettle body, a motor fixedly connected to the top of the kettle body, three support legs fixedly connected to the outer surface of the kettle body, a discharge pipe connected to the middle of the bottom of the kettle body, a feed pipe connected to the top of the kettle body, a fixed plate fixedly connected to the inner wall of the kettle body, a stirring device arranged in the middle of the interior of the kettle body. When the fixed sleeve rotates, it can make the fixed sleeve rotate to drive the fixed block and the connecting frame to contact and impact the material accumulated on the inner wall of the fixed sleeve, so that the material can be limited by the connecting frame after passing through the opening at the lower end of the fixed block or the slot opened on the surface. Therefore, the material can be dispersed by the connecting frame, which facilitates the subsequent mixing and stirring of the material and improves the extraction reaction efficiency of the material, and has the characteristics of strong practicality.

[0005] Although the related patent technology helps to improve the separation and recovery effect of supercritical fluid, there are still some technical problems to be solved in actual application scenarios. Specifically, in the raw material extraction link, the raw material will accumulate at the bottom of the kettle body due to its own gravity. The supercritical fluid is usually injected into the kettle body in a "downward and upward" manner. However, due to the close stacking and covering of the materials in the kettle body, the contact effect of a large amount of supercritical fluid with the raw material is poor, and it is difficult to fully penetrate into the interior of the raw material at each level, which easily leads to incomplete extraction and affects the extraction rate of the material.

[0006] In addition, when the stirring mechanism stirs and extracts the kernel raw materials, since the kernel raw materials are rich in a large amount of oil, protein and sugar, the kernel raw materials have poor fluidity and are prone to stick together and harden during the stirring process. This can cause serious caking and channeling problems in the extraction kettle during the extraction process, and finally cause the kernel raw materials in the kettle to have extraction dead angles, slow extraction speed, uneven extraction and incomplete extraction. SUMMARY

[0007] The purpose of the present application is to provide a spice low-temperature extraction and concentration integrated system, which aims to solve the problems raised in the background art.

[0008] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0009] The present application provides a spice low-temperature extraction and concentration integrated system, which comprises a reaction kettle and further comprises:

[0010] An air inlet bin is arranged at the top of the reaction kettle, and a fluid pipe is arranged on the outer side of the air inlet bin, the fluid pipe being used for conveying supercritical fluid into the air inlet bin;

[0011] A stirring part is arranged in the reaction kettle and comprises a hollow main shaft, the main shaft being connected with the air inlet bin, an array of fixing members being arranged on the main shaft, an oscillating member being arranged on the outer side of the fixing member, a deflection part being arranged between the fixing member and the oscillating member, and the deflection part being used for driving the oscillating member to oscillate;

[0012] A guide part is arranged on the fixing member and is used for conveying the supercritical fluid into the cavity of the oscillating member;

[0013] An active head is arranged on the outer surface of the oscillating member in an array, and the supercritical fluid enters the inside of the reaction kettle through the active head;

[0014] An adjusting part is arranged in the cavity and is connected with the active head, and when the adjusting part moves axially along the fixing member, the active head is deflected.

[0015] Preferably, the adjusting part comprises:

[0016] An active plate is arranged in the cavity and is connected with the oscillating member in a sliding manner, and the active plate is provided with a notch corresponding to the active head, and the active head is connected with the notch in a rotating manner;

[0017] A telescopic member is arranged between the active plate and the oscillating member, and when the telescopic member is elongated, the active plate is pushed to move axially along the fixing member, and at this time, the active head is deflected under the influence of the notch.

[0018] Preferably, the active heads arranged on the upper surface and the lower surface of the oscillating member are arranged in a staggered manner, and the active plates corresponding to the active heads are also arranged in a staggered manner.

[0019] Preferably, the deflection part comprises:

[0020] The movable block is arranged inside the sliding channel outside the fixing member, and the movable block is provided with a pushing part for pushing the adjusting part to move along the axial direction of the fixing member.

[0021] The arc-shaped groove is arranged inside the swing member and matched with the movable block.

[0022] Preferably, the pushing part comprises:

[0023] The communication member and the conducting member are respectively arranged at two ends of the swing member and rotationally connected with the fixing member.

[0024] The elastic member is symmetrically arranged at two sides of the movable block; when the movable block moves towards the main shaft, the medium in the elastic member enters the telescopic member through the conducting member; when the movable block moves away from the main shaft, the medium in the elastic member enters the telescopic member through the communication member.

[0025] Preferably, the conducting part comprises a flow guide channel arranged inside the fixing member, and the flow guide channel is connected with the cavity of the swing member through the hole channel.

[0026] When the included angle between the swing member and the main shaft gradually decreases, the flow entering the cavity from the hole channel gradually increases; when the included angle between the swing member and the main shaft gradually increases, the flow entering the cavity from the hole channel gradually decreases.

[0027] Preferably, the main shaft is provided with a through hole outside one end of the air inlet chamber.

[0028] Preferably, the fixing member is provided with symmetrically arranged medium channels, one end of the medium channel is connected with the elastic member, and the other end of the medium channel is connected with the pushing part.

[0029] Preferably, the bottom of the reaction kettle is provided with an extraction pipe, the connection part between the extraction pipe and the reaction kettle is provided with a filter, and the extraction pipe is connected with an external separation device.

[0030] Preferably, the swing member comprises a shaft center area and a swing area, the arc-shaped groove is arranged in the shaft center area, and the shaft center area is rotationally connected with the fixing member.

[0031] The shaft center area is used for shielding the hole channel, when the swing member is perpendicular to the main shaft, the shielding area of the shaft center area to the hole channel is maximum, and when the included angle between the swing member and the main shaft gradually decreases, the shielding area of the shaft center area to the hole channel is synchronously reduced.

[0032] Technical effects and advantages of the present application:

[0033] The application improves the contact range of fluid and raw materials and improves the extraction efficiency by specific fluid flow and stirring design. Specifically, the angle of the swing part and the fluid flow are adjusted according to the type of raw materials (light or heavy), axial flow is generated to avoid damage when the raw materials are light, and strong radial flow and shear force are generated to improve the mass transfer efficiency when the raw materials are heavy; At the same time, the sound emission sensor detects the accumulation and bonding of the raw materials, and the control system adjusts the current of the annular electromagnetic part according to the above, so that the swing part shows different states, reduces the agglomeration of the raw materials, and effectively disperses the agglomerated raw material blocks to ensure uniform dispersion of the raw materials and avoid local high concentration, so that all particles can be fully infiltrated by the solvent, avoid "dead zone", and improve the overall extraction effect. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is a schematic diagram of the main body frame of the system of the application;

[0035] Figure 2 It is a structural schematic diagram of the reaction kettle of the application;

[0036] Figure 3 It is a schematic diagram of the swing part of the application; Figure 2 It is a partial enlarged schematic diagram of A in the application;

[0037] Figure 4 It is a structural schematic diagram of the swing part of the application;

[0038] Figure 5 It is a structural schematic diagram of the adjusting part of the application;

[0039] Figure 6 It is a schematic diagram of the internal structure of the swing part of the application;

[0040] Figure 7 It is a structural schematic diagram of the fixed part of the application;

[0041] Figure 8 It is a partial enlarged schematic diagram of B in the application; Figure 7 It is a partial enlarged schematic diagram of B in the application;

[0042] Figure 9 It is a sectional structural schematic diagram of the fixed part

[0043] Figure 10 It is a structural schematic diagram of the guide part of the application;

[0044] Figure 11 It is a state schematic diagram of the swing part in the mirror state of the application;

[0045] Figure 12 It is a schematic diagram of the included angle between the swing part and the main shaft of the application.

[0046] In the figure:

[0047] 1. Reactor;

[0048] 2. Air intake chamber;

[0049] 3. Stirring section; 301. Main shaft; 302. Fixing component; 303. Swinging component; 304. Deflection section; 3041. Moving block; 3042. Arc groove;

[0050] 4. Through hole;

[0051] 5. Conducting section; 501. Flow channel; 502. Channel;

[0052] 6. Cavity;

[0053] 7. Propulsion section; 701. Connecting component; 702. Conducting component; 703. Elastic component; 704. Medium channel;

[0054] 8. Adjustment section; 801. Movable plate; 802. Notch; 803. Telescopic component;

[0055] 9. Movable head;

[0056] 10. Fluid pipe;

[0057] 11. Extraction tube. Detailed Implementation

[0058] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0059] Example 1

[0060] Combination Figure 1 As shown in the figure, this invention proposes an integrated system for low-temperature extraction and concentration of spices.

[0061] In this system, the specific process for extracting fragrance essential oils using supercritical CO2 is as follows: After flowing out of the storage tank, the CO2 first enters a cold box for cooling. Subsequently, under the pressure of a high-pressure pump, the CO2 enters reactor 1 to carry out the extraction operation. During this process, the CO2 fluid comes into full contact with the fragrance substances, achieving effective extraction of the fragrance components. After extraction, the mixed fluid enters a separation vessel for separation. The separation vessel converts the CO2 into a gaseous state by depressurization or heating, causing the originally dissolved fragrance components to separate and precipitate due to a sharp decrease in solubility, thus achieving product separation and concentration. The entire extraction process can be referenced... Figure 1 As shown.

[0062] During the whole process of extracting perfume essential oil, CO2 experiences several phase changes. Specifically, when CO2 flows out of the gas tank, the pressure of the gas tank is set at about 5 MPa and the temperature is room temperature, at which CO2 is in gaseous state. Then, CO2 enters the cold box, and the temperature of the cold box is set at 8 ℃ while the pressure remains unchanged. The temperature of CO2 is reduced from room temperature to 8 ℃, and CO2 changes from gaseous state to liquid state.

[0063] CO2 changes from gaseous state to liquid state mainly based on two reasons. On the one hand, the pressurization process of CO2 is usually completed by means of a high-pressure pump, and CO2 needs to be converted into liquid state before pressurization to ensure the smooth operation of pressurization. On the other hand, in order to improve the extraction efficiency when extracting some difficult-to-extract raw materials, a entrainer is usually added. Since the entrainer is generally in liquid state, the conversion of CO2 into liquid state helps to mix CO2 with the entrainer sufficiently. After the completion of liquid conversion, CO2 enters the reaction kettle 1 for supercritical extraction. By heating, liquid CO2 reaches the required extraction temperature, thereby changing into supercritical fluid state.

[0064] When the CO2 fluid completes extraction and flows out of the reaction kettle 1, it enters the separation kettle. Under the condition of reduced pressure, CO2 changes from supercritical state to liquid state and finally to gaseous state. After the completion of separation operation, part of the CO2 gas in the reaction kettle 1 and the separation kettle is recycled to the gas tank for recycling.

[0065] Example Two

[0066] Although the above-mentioned embodiment can realize low-temperature extraction and concentration of perfume essential oil, in actual application, the supercritical fluid is usually introduced from the bottom of the extraction kettle, contacts with the raw material to extract the effective component, and is then introduced from the top to the subsequent processing unit. However, this fluid flow mode of down-in and up-out often leads to insufficient contact between the fluid and the raw material, thereby affecting the extraction efficiency and making the extraction effect unsatisfactory. In view of this, technical improvement is made on the basis of Example One, and the improved technical scheme is shown as follows:

[0067] In combination with the content shown in Figures 1 to 10 Based on the content shown in the above-mentioned embodiment, the present application proposes a low-temperature extraction and concentration integrated system for perfume, which comprises a reaction kettle 1, and the top of the reaction kettle 1 is provided with a gas inlet bin 2, and the outer side of the gas inlet bin 2 is provided with a fluid pipe 10 for conveying supercritical fluid into the gas inlet bin 2.

[0068] Specifically, the inside of the reaction kettle 1 is provided with a stirring part 3, and the stirring part 3 comprises a main shaft 301 which is located in the reaction kettle 1 and is provided in a hollow manner, and the outer side of the one end of the main shaft 301 which extends into the gas inlet bin 2 is provided with a through hole 4. The one end of the main shaft 301 which extends out of the gas inlet bin 2 is connected with a driving motor.

[0069] Specifically, the main shaft 301 is provided with an array of fixing members 302, and the outer side of each fixing member 302 is provided with a swing member 303 for stirring the raw materials.

[0070] Specifically, the fixing member 302 is provided with a through portion 5 for conveying supercritical fluid into the cavity 6 of the swing member 303; the outer surface of the swing member 303 is arrayed with movable heads 9, which are ball-hinged with the swing member 303, and the supercritical fluid enters the inside of the reaction kettle 1 through the movable heads 9.

[0071] Specifically, the through portion 5 includes a flow guide channel 501 opened in the inside of the fixing member 302, and the flow guide channel 501 is connected with the cavity 6 of the swing member 303 through a hole channel 502, which is arranged in a cross manner on the fixing member 302; the supercritical fluid enters the inside of the flow guide channel 501 through the through hole 4 and the hole channel 502, and is finally sprayed out of the movable heads 9 arrayed on the swing member 303.

[0072] Specifically, the bottom of the reaction kettle 1 is provided with an extraction pipe 11, and the connection between the extraction pipe 11 and the reaction kettle 1 is provided with a filter member, and the extraction pipe 11 is connected with an external separation device.

[0073] It should be noted that the top of the reaction kettle 1 is also provided with a feeding pipe, and the bottom of the reaction kettle 1 is also provided with a discharging pipe.

[0074] In use, the raw materials are conveyed into the reaction kettle 1 through the feeding pipe, and then the supercritical CO2 extraction system is started, specifically, the gas tank releases CO2, and after the CO2 flows out of the gas tank, it is first cooled in the cold box. Then, under the pressurization of the high-pressure pump, the CO2 enters the reaction kettle 1 to carry out extraction work.

[0075] The CO2 enters the gas inlet bin 2 through the fluid pipe 10, and the CO2 fluid entering the gas inlet bin 2 is transferred to the inside of the flow guide channel 501 of the fixing member 302 through the through hole 4 and the main shaft 301, and then guided into the cavity 6 of the swing member 303 through the hole channel 502, and finally sprayed out of the movable heads 9 arrayed on the swing member 303. Since the swing members 303 are arrayed on the main shaft 301, the CO2 fluid sprayed out of the movable heads 9 can enter the material layers at different heights in the reaction kettle 1, thereby improving the contact range of the fluid with the raw materials and improving the extraction efficiency.

[0076] When the CO2 fluid is introduced into the reaction kettle 1, the driving motor synchronously drives the main shaft 301 to rotate, and the main shaft 301 drives the swing member 303 to stir the raw materials in the reaction kettle 1, so that the CO2 fluid sprayed out of the movable heads 9 can cover all directions of the material layers at different heights in the reaction kettle 1, thereby improving the extraction efficiency.

[0077] Example 3

[0078] While the above embodiments can achieve complete coverage of the material layer inside the reactor 1 by CO2 fluid, in practical applications, when the stirring unit 3 is extracting the raw materials, the CO2 fluid sprayed from the moving head 9 will uniformly treat the raw materials inside the reactor 1. However, due to the different types of raw materials and their varying degrees of accumulation, uniform treatment may result in the dissolution of non-target substances or the fluid failing to effectively penetrate the interior of the raw materials. Therefore, a technical improvement is made based on Embodiment 2, and the improved technical solution is as follows:

[0079] Combination Figures 1 to 12 As shown in the figure, this invention proposes an integrated system for low-temperature extraction and concentration of spices.

[0080] Specifically, a deflection part 304 is provided between the fixed member 302 and the swing member 303, and the deflection part 304 is used to drive the swing member 303 to swing.

[0081] Specifically, the deflection part 304 includes an array of slides opened on the outside of the fixing member 302. A movable block 3041 is slidably connected inside the slide. A pushing part 7 is provided on the outside of the movable block 3041. The pushing part 7 is used to push the adjusting part 8 to move along the axial direction of the fixing member 302.

[0082] The deflection part 304 also includes an arc-shaped groove 3042 formed inside the swing member 303, which cooperates with the movable block 3041. When the movable block 3041 moves axially along the slide on the fixed member 302, the movable block 3041 simultaneously presses the arc-shaped groove 3042, thereby driving the swing part to deflect. By setting multiple sets of movable blocks 3041 and arc-shaped grooves 3042, the movable block 3041 can lock the deflection angle of the swing part after completing its movement.

[0083] Specifically, the cavity 6 is provided with an adjustment part 8, which is connected to the movable head 9. When the adjustment part 8 moves along the axial direction of the fixed member 302, the movable head 9 swings.

[0084] Specifically, the adjustment part 8 includes a movable plate 801 located inside the cavity 6. The movable plate 801 is slidably connected to the swing member 303. The movable plate 801 is provided with a notch 802 corresponding to the movable head 9. The movable head 9 is hinged to the notch 802. There is a gap between the notch 802 and the movable head 9 so that the movable head 9 can swing at the notch 802 when the movable plate 801 moves.

[0085] Specifically, when the movable plate 801 moves toward the main shaft 301, the movable head 9 swings toward the vessel wall; when the movable plate 801 moves toward the vessel wall, the movable head 9 swings toward the main shaft 301.

[0086] The elastic member 803 is arranged between the movable plate 801 and the swing member 303, and when the elastic member 803 pushes the movable plate 801 to move along the fixed member 302 in the axial direction, the movable head 9 is deflected under the influence of the notch 802. The elastic member 803 comprises a spring bellows.

[0087] Specifically, the pushing part 7 comprises a communication member 701 and a guide member 702, which are respectively arranged at two ends of the swing member 303 and are rotationally connected with the fixed member 302.

[0088] It should be noted that the communication member 701 and the guide member 702 are both annular, and the inner side of each of them is provided with an accommodating space, and the outer side of each of them is connected with the corresponding elastic member 803 through a hard pipe (steel pipe).

[0089] Specifically, the fixed member 302 is provided with symmetrically distributed medium channels 704, one end of each of the medium channels 704 is connected with the elastic member 703, and the other end of each of the medium channels 704 is connected with the pushing part 7.

[0090] Specifically, the medium channel 704 close to one end of the fixed member 302 is connected with the guide member 702, and the medium channel 704 away from the other end of the fixed member 302 is connected with the communication member 701.

[0091] Specifically, the pushing part 7 further comprises the elastic member 703, which is preferably a spring bellows, and the elastic member 703 is symmetrically distributed on both sides of the movable block 3041; when the movable block 3041 moves towards the main shaft 301, the medium (gas or liquid) in the elastic member 703 enters the elastic member 803 through the guide member 702; when the movable block 3041 moves away from the main shaft 301, the medium in the elastic member 703 enters the elastic member 803 through the communication member 701.

[0092] It should be noted that the movable head 9 on the upper surface and the lower surface of the swing member 303 is staggered, and the movable plate 801 corresponding to the movable head 9 is also staggered, which can be referred to in detail with reference to Figure 5 .

[0093] Referring to Figure 5 , the elastic member 703 on the left side of the movable block 3041 is connected with the communication member 701 through the medium channel 704, the elastic member 703 on the right side of the movable block 3041 is connected with the guide member 702 through the medium channel 704, the elastic member 803 in the S1 region of the swing member 303 is connected with the communication member 701, and the elastic member 803 in the S2 region of the swing member 303 is connected with the guide member 702.

[0094] When the movable block 3041 moves away from the main shaft 301, the movable block 3041 extrudes the left elastic member 703 while stretching the right elastic member 703, so that the left elastic member 703 generates positive pressure, and the right elastic member 703 generates negative pressure.

[0095] The medium in the left elastic member 703 enters the telescopic member 803 on the upper surface of the swing member 303 through the through member 702, so as to push the movable plate 801 in the S1 area to move right, and further make the movable head 9 in the S1 area deflect away from the main shaft 301; the right elastic member 703 sucks the medium in the telescopic member 803 in the S2 area, so as to make the telescopic member 803 in the S2 area contract, thereby pulling the movable plate 801 to move right, and further making the movable head 9 in the S2 area deflect away from the main shaft 301.

[0096] Specifically, the through part 5 includes a flow guide channel 501 opened in the fixed member 302, and the flow guide channel 501 is connected with the cavity 6 of the swing member 303 through a hole channel 502; the hole channel 502 is cross-distributed, and specific as shown in the figure.

[0097] When the included angle between the swing member 303 and the main shaft 301 gradually decreases, the flow from the hole channel 502 into the cavity 6 gradually increases; when the included angle between the swing member 303 and the main shaft 301 gradually increases, the flow from the hole channel 502 into the cavity 6 gradually decreases, and specific reference is made to Figure 10 and Figure 11 .

[0098] Specifically, the swing member 303 includes an axis core area and a swing area, and the arc-shaped groove 3042 is located in the axis core area, and the axis core area is rotationally connected with the fixed member 302.

[0099] The axis core area is used for shielding the hole channel 502, and when the swing member 303 and the main shaft 301 are in the vertical state, the shielding area of the axis core area to the hole channel 502 is the largest; when the included angle θ1 between the swing member 303 and the main shaft 301 gradually decreases, the shielding area of the axis core area to the hole channel 502 synchronously decreases, and specific reference is made to Figure 11 .

[0100] It should be noted that in the embodiment, the inside of the movable block 3041 is provided with a magnetic block, and the outside of the reaction kettle 1 is provided with a ring-shaped electromagnetic member at the height opposite to the fixed member 302, and the moving distance of the movable block 3041 in the slide is controlled by controlling the current size and current direction input to the ring-shaped electromagnetic member. Controlling the block movement by the electromagnetic member belongs to the prior art and will not be described in detail here.

[0101] It should be noted that when the movable block 3041 moves towards the main shaft 301, the included angle θ1 between the swing piece 303 and the main shaft 301 gradually increases, and when the movable block 3041 moves away from the main shaft 301, the included angle θ1 between the swing piece 303 and the main shaft 301 gradually decreases.

[0102] In the embodiment, the outer wall of the reaction kettle 1 is provided with array distributed acoustic emission sensors, and the core of the acoustic emission sensor is a piezoelectric ceramic sensor. The sensor converts mechanical waves into electrical signals to effectively capture particle friction and collision signals and suppress low-frequency mechanical noise.

[0103] It should be noted that the embodiment is also provided with a preamplifier, a data acquisition and processing module, and an analysis and control system. The preamplifier is arranged because the signal collected by the sensor is weak and needs to be amplified nearby. Usually, a preamplifier is selected to improve the signal-to-noise ratio. The data acquisition and processing system is arranged to be responsible for signal collection, filtering, digitization, and storage. The analysis and control system is arranged for real-time display and analysis of acoustic emission parameters, and can integrate a pattern recognition algorithm or set an alarm threshold.

[0104] When the flow state or accumulation of the raw materials in the reaction kettle 1 changes, friction, collision, and extrusion will occur between the particles, the particles and the swing piece 303, and the kettle wall. These microscopic mechanical actions will instantaneously release energy and generate high-frequency stress waves, i.e., acoustic emission signals.

[0105] The degree of accumulation of the raw materials is directly related to their fluidity. In the normal flow area, the particles move very violently, and frequent friction and collision occur between them, generating acoustic emission signals with high intensity and a high event rate. In the accumulation or dead zone area, the particles basically stop moving, the friction and collision significantly decrease, the generated acoustic emission signals have low intensity, and the event rate is low.

[0106] By arranging acoustic emission sensors outside the kettle wall, these signals can be captured, and the characteristic parameters thereof can be analyzed to indirectly infer the accumulation position and degree of the raw materials in the stirred kettle.

[0107] In use, when the driving motor drives the main shaft 301 to rotate, the main shaft 301 drives the swing piece 303 to stir the raw materials in the reaction kettle 1, and the CO2 fluid passes through the through hole 4 and the main shaft 301 to enter the guide passage 5 inside the fixed piece 302, and then enters the cavity 6 of the swing piece 303 through the guide of the guide passage 5, and finally is sprayed out from the array distributed movable heads 9 of the swing piece 303, so as to improve the contact range of the fluid and the raw materials and improve the extraction efficiency.

[0108] In the working process of the stirring part 3, the acoustic emission sensors arranged on the reaction kettle 1 are used to detect whether the raw materials entering the reaction kettle 1 are light raw materials or heavy raw materials. Specifically, when the stirring part 3 is stirring the raw materials, if the raw materials in the reaction kettle 1 are heavy raw materials, the energy released when the heavy raw materials collide with the swing part 303 and the kettle wall during the stirring of the stirring part 3 is higher, and the acoustic emission signals generated usually have higher amplitude and energy. If the raw materials in the reaction kettle 1 are light raw materials, the energy released when the light raw materials collide with the swing part 303 and the kettle wall during the stirring of the stirring part 3 is smaller, and the acoustic emission signals generated have lower amplitude and energy.

[0109] The threshold value is used to determine whether the raw materials in the reaction kettle 1 are light raw materials or heavy raw materials. When the average value of the detection values of the acoustic emission sensors distributed on the outer wall of the reaction kettle 1 is less than the threshold value, it indicates that the raw materials in the reaction kettle 1 are light raw materials. When the average value of the detection values of the acoustic emission sensors distributed on the outer wall of the reaction kettle 1 is greater than the threshold value, it indicates that the raw materials in the reaction kettle 1 are heavy raw materials.

[0110] It should be noted that in the initial state, the swing part 303 is in a deflection state, and at this time, the movable heads 9 located in the S1 and S2 regions of the swing part 303 are all deflected away from the main shaft 301.

[0111] When the control system detects that the type of the raw materials in the reaction kettle 1 is light raw materials, the control system passes a forward current into the ring-shaped electromagnetic part arranged on the reaction kettle 1 to make the ring-shaped electromagnetic part generate a repulsive force repelling the movable block 3041, so as to drive the movable block 3041 to move towards the main shaft 301. In this process, the movable block 3041 extrudes the arc-shaped groove 3042 to make the swing part 303 swing, that is, the included angle θ1 between the swing part 303 and the main shaft 301 gradually increases (the included angle θ2 between the swing part 303 and the horizontal plane gradually decreases). When the swing part 303 rotates at a smaller angle, a strong axial flow can be generated, which helps to break up soft agglomerates and make the raw materials at all height layers of the reaction kettle 1 uniformly fluidized, so as to avoid local accumulation and "bridge" phenomenon and ensure that the supercritical CO2 can uniformly penetrate all raw materials.

[0112] At the same time, when the included angle between the swing part 303 and the main shaft 301 gradually increases, the flow rate of the fluid entering the cavity 6 from the hole 502 gradually decreases, so that the flow rate of the fluid entering the reaction kettle 1 is reduced, avoiding that the light raw materials are subjected to excessive impact and causing damage to fragile raw materials and leading to the dissolution of non-target components.

[0113] It should be noted that: when the positive current is passed into the annular electromagnetic element, the amount of current is controlled according to the detection value of the acoustic emission sensor distributed at each height of the reaction kettle 1. Specifically, the degree of accumulation of the raw materials in the reaction kettle 1 is detected by the acoustic emission sensor, and then the amount of positive current passing into the annular electromagnetic element is adjusted. Specifically, the higher the degree of accumulation, the less the positive current passing in, and the smaller the angle θ2 between the swing element 303 and the horizontal plane.

[0114] It should be noted that: as shown in Figure 5 When the movable block 3041 moves towards the main shaft 301 (i.e. the movable block 3041 moves to the right), the movable block 3041 extrudes the right elastic element 703, while lengthening the left elastic element 703, so that the left elastic element 703 generates negative pressure, and the right elastic element 703 generates positive pressure. The medium in the right elastic element 703 pushes the movable plate 801 in the S2 region to move to the left, so that the movable head 9 located in the S2 region is deflected towards the main shaft 301;

[0115] The left elastic element 703 sucks the medium in the telescopic element 803 in the S1 region, so that the telescopic element 803 in the S1 region contracts, thereby pulling the movable plate 801 to move to the left, and further causing the movable head 9 located in the S1 region to deflect towards the main shaft 301. By driving the movable head 9 in the S1 region and the S2 region to deflect from the original direction angle away from the main shaft 301 to the direction angle close to the main shaft 301, the gas flow ejected from the movable head 9 gradually presents a parallel state with the main shaft 301, so as to strengthen the overall up-and-down circulation in the kettle. Promote the uniform fluidization of the raw materials, reduce the temperature gradient and the concentration gradient, prevent the accumulation of light raw materials, and at the same time, the axial jet can gently scatter the lumps, so that the raw materials are uniformly suspended, ensuring that all particles can be fully infiltrated by the solvent, avoiding the formation of "dead zones".

[0116] It should be noted that when the movable block 3041 drives the swing element 303 to be perpendicular to the main shaft 301, the gas flow ejected from the movable head 9 presents a parallel state with the main shaft 301.

[0117] When the control system detects that the type of raw materials in the reaction kettle 1 is heavy raw materials, the control system passes a reverse current into the annular electromagnetic element distributed on the reaction kettle 1, so that the annular electromagnetic element generates an attractive force to the movable block 3041, and drives the movable block 3041 to move away from the main shaft 301. In this process, the movable block 3041 extrudes the arc-shaped groove 3042 to make the swing element 303 swing, that is, the angle θ1 between the swing element 303 and the main shaft 301 gradually decreases (the angle θ2 between the swing element 303 and the horizontal plane gradually increases).

[0118] Due to the high density, compact structure and large diffusion resistance of the heavy feedstock, when the swing member 303 rotates at a large angle, stronger radial flow and shear force can be generated, which can effectively destroy the compact cell structure or scatter the oilseed kernels, create more penetration channels for the supercritical CO2 fluid, and significantly improve the mass transfer efficiency.

[0119] When the angle between the swing member 303 and the main shaft 301 gradually decreases, the flow rate from the hole 502 into the cavity 6 gradually increases, thereby increasing the flow rate of the fluid into the reaction kettle 1, increasing the impact on the dense and high-viscosity feedstock, and increasing the local shear force to enable the fluid to effectively penetrate the inside of the feedstock.

[0120] It should be noted that when the reverse current is passed into the interior of the annular electromagnetic member, the amount of current is controlled according to the detection values of the acoustic emission sensors distributed at various heights of the reaction kettle 1. Specifically, the degree of accumulation of the feedstock in the reaction kettle 1 is detected by the acoustic emission sensors, and then the amount of forward current passed into the interior of the annular electromagnetic member is adjusted. Specifically, the higher the degree of accumulation, the greater the amount of reverse current passed in, and the greater the angle θ2 between the swing member 303 and the horizontal plane.

[0121] It should be noted that, as shown in Figure 5 When the movable block 3041 moves away from the main shaft 301 (i.e., the movable block 3041 moves to the left), the movable block 3041 presses the left elastic member 703 while lengthening the right elastic member 703, so that the right elastic member 703 generates negative pressure and the left elastic member 703 generates positive pressure. The medium in the left elastic member 703 pushes the movable plate 801 in the S1 region to move to the right, so that the movable head 9 located in the S1 region is further deflected away from the main shaft 301.

[0122] The right elastic member 703 sucks the medium in the telescopic member 803 in the S2 region, so that the telescopic member 803 in the S2 region contracts, thereby pulling the movable plate 801 to move to the right, and further causing the movable head 9 located in the S2 region to be further deflected away from the main shaft 301.

[0123] By driving the movable head 9 in the S1 region and the S2 region to be further deflected away from the main shaft 301, the airflow ejected from the movable head 9 gradually assumes a vertical state with respect to the main shaft 301. When the fluid is ejected perpendicular to the main shaft 301 or along the tangent direction of the main shaft 301, strong local shear, turbulence and vortex can be generated, which can effectively scatter the solid clumps and destroy the compact cell structure, thereby creating more penetration channels for the supercritical CO2.

[0124] Example Four

[0125] While the above embodiments can achieve comprehensive processing of both light and heavy raw materials, when extracting seed kernels, the raw materials are rich in oils, proteins, and sugars, resulting in poor fluidity and agglomeration during stirring. This leads to dead zones in the extraction process, resulting in slow extraction speed, uneven extraction, and incomplete extraction. Therefore, a technical improvement is made based on Embodiment 3, and the improved technical solution is shown below:

[0126] Combination Figures 1 to 12 As shown, the control system determines whether agglomeration or adhesion occurs between raw material layers of different heights by detecting the changing trends of parameters detected by acoustic emission sensors outside reactor 1 over time. Specifically, when raw material particles agglomerate, strong bonding forces form between the particles, and their breakage releases a high-energy signal at a specific frequency. However, the overall decrease in fluidity leads to a reduction in signal activity in that area. That is, the agglomeration process may manifest as a short-term increase in signal energy and amplitude, followed by a sustained decline in overall signal activity in that area.

[0127] When the acoustic emission sensor in a certain area of ​​reactor 1 detects that the raw materials are agglomerating, the control system, based on the area where the acoustic emission sensor is located, controls the two annular electromagnetic components located above and below that area to drive the opposing oscillating component 303 to oscillate in a mirror-like manner, thereby addressing the agglomeration of the raw materials in that area. Specifically:

[0128] When the control system detects that the raw materials in a certain area of ​​reactor 1 are agglomerated, the control system supplies a positive current to the adjacent annular electromagnetic component above that area, and a reverse current to the adjacent annular electromagnetic component below that area. This causes the two annular electromagnetic components above and below that area to drive the opposing oscillating component 303 to oscillate in a mirror-image manner. Specifically:

[0129] The annular electromagnetic component located below the bonding area generates an attractive force that draws into the movable block 3041, thereby driving the movable block 3041 to move away from the main shaft 301. As the movable block 3041 moves, it drives the oscillating component 303 to oscillate via the arc-shaped groove 3042. Specifically, the angle θ1 between the oscillating component 303 and the main shaft 301 gradually decreases. Figure 12As shown in the figure; when the movable block 3041 moves away from the main shaft 301, the movable block 3041 extrudes the left elastic member 703, while lengthening the right elastic member 703, so that the right elastic member 703 generates negative pressure, and the left elastic member 703 generates positive pressure. The movable block 3041 extrudes the left elastic member 703, while lengthening the right elastic member 703, so that the right elastic member 703 generates negative pressure, and the left elastic member 703 generates positive pressure. The medium in the left elastic member 703 pushes the movable plate 801 in the S1 area to move to the right, so that the movable head 9 located in the S1 area is further deflected away from the main shaft 301; the right elastic member 703 sucks the medium in the telescopic member 803 in the S2 area, pulling the movable head 9 in the S2 area to further deflect away from the main shaft 301.

[0130] The adjacent annular electromagnetic member above the bonding area generates a repulsive force repelling the movable block 3041, thereby driving the movable block 3041 to move towards the main shaft 301. When the movable block 3041 moves, it drives the swing member 303 to swing through the arc-shaped slot 3042, that is, the included angle θ1 between the swing member 303 and the main shaft 301 gradually increases. It should be noted that when the swing member 303 and the main shaft 301 are in a vertical state, continue to increase the forward current input to the adjacent annular electromagnetic member above the bonding area, so that the swing member 303 continues to deflect, and finally makes the swing member 303 above the bonding area and below the bonding area in a mirror image state, as shown in the figure; at the same time, the mirror-symmetric paddles form a relatively symmetric shear field distribution in the reaction kettle 1, so that the shear action of the raw materials in the kettle is more uniform in the axial direction, thereby reducing the phenomenon of raw material bonding. Figure 11

[0131] It should be noted that when the swing member 303 above the bonding area and the main shaft 301 are in a vertical state, the airflow sprayed from the movable head 9 of the S1 area and the S2 area on the swing member 303 is parallel to the main shaft 301, and when the movable block 3041 continues to move towards the main shaft 301, the movable head 9 of the S1 area and the S2 area gradually deflects towards the main shaft 301.

[0132] When the swing members 303 above and below the bonding area are in a mirror image state, the fluid sprayed from the swing member 303 above the bonding area will intersect with the fluid sprayed from the swing member 303 below the bonding area. The intersecting sprayed fluid improves the shearing effect of the fluid on the raw materials, thereby effectively breaking up the raw material lumps bonded together into smaller particles, which ensures uniform dispersion of the raw materials and avoids excessive local concentration.

[0133] ​It should be noted that when the raw material of the bonding area is processed in the embodiment, preferably, the current is intermittently passed into the annular electromagnetic member corresponding to the swing member 303 located above and below the bonding area, so that the swing member 303 located above and below the bonding area is intermittently close or far away, so that the raw material where the bonding area is located is impacted by pulse, and the intermittent pulse jet can provide higher instantaneous power in a short time, the energy is concentrated in a short time, the impact and shear effect is stronger than continuous flow, and the bonding structure of the raw material can be more effectively destroyed.

[0134] Finally, it should be pointed out that the above only describes the preferred embodiments of the present application and is not used to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments or replace some technical features equivalently without departing from the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

[0135] Although the embodiments of the present application have been shown and described, those skilled in the art can make various changes, modifications, replacements and deformations to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An integrated system for low-temperature extraction and concentration of fragrances, comprising a reaction vessel, characterized in that: An air inlet chamber is located at the top of the reactor, and a fluid pipe is provided on its outer side for supplying supercritical fluid into the air inlet chamber. The stirring unit includes a hollow main shaft located inside the reactor. The main shaft is connected to the air inlet chamber. The main shaft is provided with an array of fixed members. A swinging member is provided on the outside of the fixed members. A deflection part is provided between the fixed members and the swinging member. The deflection part is used to drive the swinging member to swing. The guide section, which is mounted on the fixed component, is used to transport supercritical fluid to the cavity of the oscillating component; The movable head, which is arrayed on the outer surface of the oscillating component, allows supercritical fluid to enter the interior of the reactor through the movable head. The adjusting part is located inside the cavity and is connected to the movable head. When the adjusting part moves along the axial direction of the fixed part, the movable head swings.

2. The integrated system for low-temperature extraction and concentration of spices according to claim 1, characterized in that, The adjustment unit includes: A movable plate, located inside the cavity and slidably connected to the swinging component, has a notch on it corresponding to the movable head, and the movable head is rotatably connected to the notch; The telescopic component is located between the movable plate and the swinging component. When it extends, it pushes the movable plate to move axially along the fixed component. At this time, the movable head is affected by the notch and swings.

3. The integrated system for low-temperature extraction and concentration of spices according to claim 2, characterized in that, The movable heads located on the upper and lower surfaces of the swing member are staggered, and the movable plates corresponding to the movable heads are also staggered.

4. The integrated system for low-temperature extraction and concentration of spices according to claim 3, characterized in that, The deflection section includes: The movable block is located inside the slide rail on the outside of the fixed member, and a pushing part is provided on its outside. The pushing part is used to push the adjusting part to move along the axial direction of the fixed member. An arc-shaped groove is formed inside the swinging component and cooperates with the moving block.

5. The integrated system for low-temperature extraction and concentration of spices according to claim 4, characterized in that, The propulsion unit includes: The connecting component and the conducting component are located at the two ends of the swinging component and are rotatably connected to the fixed component; The elastic elements are symmetrically distributed on both sides of the movable block. When the movable block moves towards the main shaft, the medium inside the elastic elements enters the telescopic element through the conductor. When the movable block moves away from the main shaft, the medium inside the elastic elements enters the telescopic element through the connecting element.

6. The integrated system for low-temperature extraction and concentration of spices according to claim 5, characterized in that, The guiding part includes a guide channel formed inside the fixing member, and the guide channel is connected to the cavity of the swing member through a hole; As the angle between the oscillating component and the main shaft gradually decreases, the flow rate entering the cavity from the channel gradually increases; as the angle between the oscillating component and the main shaft gradually increases, the flow rate entering the cavity from the channel gradually decreases.

7. The integrated system for low-temperature extraction and concentration of spices according to claim 6, characterized in that, The main shaft has a through hole on the outer side of the end that extends into the air intake chamber.

8. The integrated system for low-temperature extraction and concentration of spices according to claim 7, characterized in that, The fixing member is provided with symmetrically distributed medium channels. One end of the medium channel is connected to the elastic member, and the other end of the medium channel is connected to the pushing part.

9. The integrated system for low-temperature extraction and concentration of spices according to claim 8, characterized in that, The bottom of the reactor is equipped with an extraction tube, and a filter element is provided at the connection between the extraction tube and the reactor. The extraction tube is connected to an external separation device.

10. The integrated system for low-temperature extraction and concentration of spices according to claim 9, characterized in that, The swinging component includes a central axis area and a swinging area, the arc-shaped groove is located in the central axis area, and the central axis area is rotatably connected to the fixed component; The central region is used to block the channel. When the swinging component is perpendicular to the main shaft, the blocking area of ​​the central region on the channel is the largest. As the angle between the swinging component and the main shaft gradually decreases, the blocking area of ​​the central region on the channel decreases synchronously.

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