A microwave-assisted pilot extraction device for chlorogenic acid in sunflower seed meal

Abstract

This utility model relates to the field of extraction technology and discloses a microwave-assisted pilot-scale extraction device for chlorogenic acid in sunflower seed meal. The device includes a support column, a microwave output extraction shell fixedly connected to the top of the support column, a heat-resistant inner liner fixedly connected to the inner wall of the microwave output extraction shell, a discharge port fixedly connected to the bottom of the heat-resistant inner liner, a valve fixedly connected to one end of the discharge port, a cover fixedly connected to the top of the support column, a fixing column fixedly connected to the outer wall of the cover, an explosion-proof motor fixedly connected to the inner wall of the fixing column, a helical gear one fixedly connected to one end of the explosion-proof motor, and a helical gear two meshing with the upper end of the helical gear one. In this utility model, layered stirring is achieved through a single motor drive. The upper and middle stirring rods can fully break up raw material clumps, and the bottom anchor-type stirring rods can scrape the bottom of the device, effectively preventing sedimentation and ensuring uniform mixing of materials and solvents throughout the entire process.

Description

Technical Field

[0001] This utility model relates to the field of extraction technology, and in particular to a microwave-assisted pilot-scale extraction device for chlorogenic acid from sunflower seed meal. Background Technology

[0002] Chlorogenic acid in sunflower seed meal is a natural phenolic compound and its important active ingredient. Modern research shows that chlorogenic acid has antioxidant properties, can scavenge free radicals, and can also regulate lipid metabolism. It has potential application value in the food, feed and pharmaceutical fields. Sunflower seed meal has also become a high-quality plant-derived raw material for the extraction of this ingredient because of chlorogenic acid.

[0003] Early methods for obtaining chlorogenic acid from sunflower seed meal relied mainly on traditional basic processes. These involved first pre-treating the sunflower seed meal by crushing and sieving it to increase the contact area. Then, chlorogenic acid was extracted using water or dilute ethanol, which is readily soluble in water, through soaking and reflux. The residue was then filtered out, and the extract was concentrated to increase its concentration. Finally, the pH was adjusted, a precipitant was added, and some simple methods were used to remove impurities, resulting in a crude chlorogenic acid extract. This extraction method was simple but inefficient. While modern advanced equipment can utilize microwaves for more efficient extraction, problems still exist, such as the accumulation of raw materials at the bottom of the extraction tank and insufficient utilization of the extracted materials. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a microwave-assisted pilot-scale extraction device for chlorogenic acid from sunflower seed meal, aiming to improve the problems of raw material accumulation at the bottom of the extraction tank and insufficient utilization of raw materials in the prior art.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a microwave-assisted pilot-scale extraction device for chlorogenic acid in sunflower seed meal, comprising a support column, a microwave output extraction shell fixedly connected to the top of the support column, a heat-resistant inner liner fixedly connected to the inner wall of the microwave output extraction shell, a discharge port fixedly connected to the bottom of the heat-resistant inner liner, a valve fixedly connected to one end of the discharge port, a cover fixedly connected to the top of the support column, a fixing column fixedly connected to the outer wall of the cover, an explosion-proof motor fixedly connected to the inner wall of the fixing column, a helical gear one fixedly connected to one end of the explosion-proof motor, a helical gear two meshing with the upper end of the helical gear one, and a rotating gear fixedly connected to the inner wall of the helical gear two. The rotating column has a rotatable bearing rotatably connected to its outer wall, a helical gear three fixedly connected to its outer wall, a rotating sleeve fixedly connected to the bottom end of the outer wall of the helical gear three, multiple fixing screws one fixedly connected to the outer wall of the cover near its edge, a turntable one fixedly connected to the bottom end of the rotating sleeve, multiple connecting posts one fixedly connected to the outer wall of the turntable one, multiple stirring rods fixedly connected to the outer wall of the multiple connecting posts one, a turntable two fixedly connected to the lower end of the outer wall of the rotating column, multiple connecting posts two fixedly connected to the outer wall of the turntable two, multiple anchor stirring rods fixedly connected to the bottom end of the multiple connecting posts two, and a pressure relief mechanism provided at the top of the cover for pressure relief.

[0006] As a further description of the above technical solution:

[0007] The pressure relief mechanism includes a second outer shell, a third outer shell fixedly connected to the top of the second outer shell, multiple fixing screws 2 fixedly connected to the outer wall of the third outer shell near its edge, a disc 1 slidably connected to the inner wall of the third outer shell, a spring fixedly connected to the bottom of the outer wall of the disc 1, a top post slidably connected to the inner wall of the disc 1, a disc 2 slidably connected to the bottom of the spring, a funnel-shaped sliding disc slidably connected to the inner wall of the second outer shell, a limit plate fixedly connected to the inner wall of the second outer shell, a buffer groove formed in the inner wall of the second outer shell, a plug slidably connected to the inner wall of the funnel-shaped sliding disc, an air-blocking valve slidably connected to the outer wall of the plug, an air outlet formed in the outer wall of the cover, a stabilizing pad fixedly connected to the lower end of the outer wall of the air outlet, an air-blocking washer slidably connected to the upper end of the outer wall of the air outlet, a limit hole formed in the inner wall of the air-blocking washer, a fixing screw 3 threadedly connected to the outer wall of the second outer shell, and a top rod fixedly connected to one end of the fixing screw 3.

[0008] As a further description of the above technical solution:

[0009] A steel platform is fixedly connected to the bottom of the support column, a staircase is fixedly connected to the front outer wall of the steel platform, and a fire extinguisher is fixedly connected to the top of the staircase.

[0010] As a further description of the above technical solution:

[0011] A workbench is fixedly connected to the top of the steel platform, a controller is fixedly connected to the front end of the outer wall of the workbench, and a warning sign is fixedly connected to the left end of the outer wall of the workbench.

[0012] As a further description of the above technical solution:

[0013] An alarm light is fixedly connected to the top of the workbench, and a flammable gas detector is fixedly connected to the middle of the outer wall of the alarm light.

[0014] As a further description of the above technical solution:

[0015] A material inlet is fixedly connected to the right end of the outer wall of the steel platform. A low-temperature storage tank is fixedly connected to the bottom end of the material inlet. A support platform is fixedly connected to the bottom end of the low-temperature storage tank.

[0016] As a further description of the above technical solution:

[0017] A filter screen is fixedly connected to the middle of the discharge port, and blades are slidably connected to the outer walls of the plurality of stirring rods.

[0018] As a further description of the above technical solution:

[0019] The top of the cover is fixedly connected to the second inlet, the outer wall of the cover is fixedly connected to the first outer shell, and the second disc is fixedly connected to the top column.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, layered stirring is achieved by a single motor drive. The upper and middle stirring rods can fully break up raw material clumps, and the bottom anchor stirring rods can scrape the bottom of the device to effectively prevent sedimentation and ensure uniform mixing of materials and solvents throughout the entire process. Combined with microwave-assisted extraction, microwaves can quickly penetrate the materials, greatly improving the extraction efficiency and yield of chlorogenic acid. After extraction, the material is discharged directly through a valve, and the finished product can be immediately transferred to a low-temperature temporary storage tank to reduce the oxidation loss of effective components. The overall process is smooth and has the advantages of uniform stirring, high extraction efficiency, and stable material storage, making it suitable for the large-scale needs of the pilot stage.

[0022] 2. In this utility model, the top column pressurizes the plug and the air-blocking valve to fit tightly, and the air-blocking gasket strengthens the seal of the air outlet, which can effectively block gas leakage during normal extraction, ensure stable pressure inside the tank, and provide precise pressure response. Relying on the spring force to set the pressure relief threshold, when the pressure inside the tank exceeds the limit, the plug and the funnel-shaped sliding plate component can be quickly pushed to open the channel, so that the high-pressure gas can be discharged smoothly. After the pressure is released, the spring can immediately drive the components to reset and quickly restore the sealing state without manual intervention. The overall structure has reliable sealing, precise pressure control and automatic reset capabilities, providing a safety guarantee for the extraction process and avoiding risks caused by excessive pressure. Attached Figure Description

[0023] Figure 1 This is a front perspective view of a microwave-assisted pilot-scale extraction device for chlorogenic acid in sunflower seed meal according to the present invention.

[0024] Figure 2 This is a partial structural diagram of the low-temperature temporary storage tank of a microwave-assisted pilot-scale extraction device for chlorogenic acid in sunflower seed meal proposed in this utility model.

[0025] Figure 3 This is a partial structural diagram of the heat-resistant inner liner of a microwave-assisted pilot-scale extraction device for chlorogenic acid from sunflower seed meal proposed in this utility model.

[0026] Figure 4 This is a partial structural diagram of the filter screen of a microwave-assisted pilot-scale extraction device for chlorogenic acid in sunflower seed meal, as proposed in this utility model.

[0027] Figure 5 This is a partial structural diagram of the anchor-type stirring rod of a microwave-assisted pilot-scale extraction device for chlorogenic acid in sunflower seed meal proposed in this utility model.

[0028] Figure 6 This is a partial structural diagram of the explosion-proof motor of a microwave-assisted pilot-scale extraction device for chlorogenic acid in sunflower seed meal, as proposed in this utility model.

[0029] Figure 7 This is a partial structural diagram of the stabilizing pad of a microwave-assisted pilot-scale extraction device for chlorogenic acid in sunflower seed meal, as proposed in this utility model.

[0030] Figure 8 This is a partial cross-sectional view of the disk structure of a microwave-assisted pilot-scale extraction device for chlorogenic acid in sunflower seed meal proposed in this utility model.

[0031] Legend:

[0032] 1. Support column; 2. Pressure relief mechanism; 201. Outer shell two; 202. Outer shell three; 203. Fixing screw two; 204. Disc one; 205. Top column; 206. Spring; 207. Disc two; 208. Funnel-shaped sliding disc; 209. Limiting disc; 210. Buffer groove; 211. Plug; 212. Air blocking valve; 213. Air outlet; 214. Stabilizing pad; 215. Air blocking washer; 216. Limiting hole; 217. Fixing screw three; 218. Top rod; 3. Microwave output extraction shell; 4. Heat-resistant inner liner; 5. Discharge port; 6. Valve; 7. Fixing column; 8. Explosion-proof motor; 9. Helical gear one; 0. Helical Gear II; 11. Rotating Column; 12. Stabilizing Bearing; 13. Helical Gear III; 14. Cover; 15. Fixing Screw I; 16. Rotating Sleeve; 17. Turntable I; 18. Connecting Column I; 19. Stirring Rod; 20. Turntable II; 21. Connecting Column II; 22. Anchor Stirring Rod; 23. Staircase; 24. Support Platform; 25. Low Temperature Temporary Storage Tank; 26. Feed Inlet I; 27. Fire Extinguisher; 28. Workbench; 29. ​​Controller; 30. Warning Light; 31. Flammable Gas Detector; 32. Outer Shell I; 33. Warning Sign; 34. Filter Screen; 35. Paddle Blade; 36. Feed Inlet II; 37. Steel Platform. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Please see the appendix Figure 3 Appendix Figure 5 and attached Figure 6This utility model provides an embodiment of a microwave-assisted pilot-scale extraction device for chlorogenic acid in sunflower seed meal, comprising a support column 1, a microwave output extraction shell 3 fixedly connected to the top of the support column 1, a heat-resistant inner liner 4 fixedly connected to the inner wall of the microwave output extraction shell 3, a discharge port 5 fixedly connected to the bottom of the heat-resistant inner liner 4, a valve 6 fixedly connected to one end of the discharge port 5, a cover 14 fixedly connected to the top of the support column 1, a fixing column 7 fixedly connected to the outer wall of the cover 14, an explosion-proof motor 8 fixedly connected to the inner wall of the fixing column 7, a helical gear 9 fixedly connected to one end of the explosion-proof motor 8, a helical gear 10 meshing with the upper end of the helical gear 19, a rotating column 11 fixedly connected to the inner wall of the helical gear 10, and a rotating column 11 fixedly connected to the outer wall of the rotating column 11. A rotatable connection is provided with a stabilizing bearing 12. A helical gear 13 is fixedly connected to the outer wall of the rotating column 11. A rotating sleeve 16 is fixedly connected to the bottom end of the outer wall of the helical gear 13. A number of fixing screws 15 are fixedly connected to the outer wall of the cover 14 near the edge. A turntable 17 is fixedly connected to the bottom end of the rotating sleeve 16. A number of connecting columns 18 are fixedly connected to the outer wall of the turntable 17. A number of stirring rods 19 are fixedly connected to the outer wall of the multiple connecting columns 18. A turntable 20 is fixedly connected to the lower end of the outer wall of the rotating column 11. A number of connecting columns 21 are fixedly connected to the outer wall of the turntable 20. A number of anchor stirring rods 22 are fixedly connected to the bottom end of the multiple connecting columns 21. A pressure relief mechanism 2 is provided at the top of the cover 14. The pressure relief mechanism 2 is used for pressure relief.

[0035] Specifically, a microwave output extraction shell 3 is fixedly connected to the top of the support column 1. As the core cavity shell for microwave extraction, it not only provides installation space for internal components but also shields the microwaves, preventing microwave leakage and potential safety hazards. Simultaneously, it maintains the stability of the internal temperature and pressure environment. A heat-resistant inner liner 4, made of high-temperature resistant material, is fixedly connected to the inner wall of the microwave output extraction shell 3. This liner directly contacts the extraction material and solvent and can withstand the high temperatures generated during microwave heating, preventing corrosion and damage to the microwave output extraction shell 3 and extending the device's service life. An outlet 5 is fixedly connected to the bottom of the heat-resistant inner liner 4, serving as the discharge channel for the mixture of material and solvent after extraction. Its inclination angle and inner diameter are designed to ensure… The mixture can be discharged smoothly, avoiding residue accumulation. A valve 6 is fixedly connected to one end of the outlet 5 to control the opening and closing of the outlet 5. It is closed during the extraction process to ensure the inner tank is sealed, and opened after extraction to achieve quantitative and one-time discharge, facilitating the connection with subsequent separation processes. A cover 14 is fixedly connected to the top of the support column 1 to seal the top opening of the microwave output extraction shell 3, preventing steam leakage and pressure loss during extraction. It also provides a mounting carrier for the stirring mechanism and the pressure relief mechanism 2. A fixing column 7 is fixedly connected to the outer wall of the cover 14 as a mounting support structure for the explosion-proof motor 8. The high-strength connection ensures the stability of the motor during operation and avoids vibration transmission affecting the stirring accuracy. The explosion-proof motor 8 is fixedly connected to the inner wall of the fixing column 7. The stirring mechanism is powered by an explosion-proof design to accommodate flammable and explosive solvent environments that may exist during extraction, preventing electrical sparks from the motor from causing safety accidents. One end of the explosion-proof motor 8 is fixedly connected to a helical gear 9, serving as the first gear component for power transmission. Through meshing with a second helical gear 10, the rotational power of the explosion-proof motor 8 is transmitted to the rotating column 11, achieving a change in power direction and initial adjustment of speed. The upper end of the helical gear 9 is meshed with the second helical gear 10, which, in conjunction with the first helical gear 9, completes the power transmission. The number of teeth and module design determine the efficiency of power transmission and the final speed of the rotating column 11, ensuring the stirring mechanism reaches the preset stirring intensity. The inner wall of the second helical gear 10 is fixedly connected to the rotating column 11, acting as a stirrer. The core transmission component of the structure transmits the power from helical gear 10 to turntable 17 and turntable 20, respectively, driving the upper and lower stirring components to operate synchronously. A stabilizing bearing 12 is rotatably connected to the outer wall of the rotating column 11 to support its rotation, reduce frictional resistance with other components during rotation, lower energy loss, and ensure the coaxiality of the rotating column 11, preventing equipment vibration caused by eccentric rotation. A helical gear 13 is fixedly connected to the outer wall of the rotating column 11, further enhancing the connection stability between the rotating column 11 and the rotating sleeve 16, ensuring that power is evenly transmitted to turntable 17, avoiding uneven force distribution that might occur if the rotation column 11 is the sole transmission source. A rotating sleeve 16 is fixedly connected to the bottom end of the outer wall of the helical gear 13.As a connecting and transitional component between turntable 17 and helical gear 13, it rigidly transmits rotational power to the upper stirring structure and provides auxiliary support for the lower part of the rotating column 11. Multiple fixing screws 15 are fixedly connected to the outer wall of the cover 14 near the edge to tightly secure the cover 14 to the microwave output extraction shell 3. The evenly distributed screws ensure uniform force distribution on the sealing surface, improving overall sealing and preventing pressure and steam leakage. The bottom end of the rotating sleeve 16 is fixedly connected to the turntable 17, serving as the mounting base for the upper stirring components. The rotation of the rotating disc 17 drives the connecting column 18 and the stirring rod 19 to move synchronously, thereby mixing the upper layer of material. Multiple connecting columns 18 are fixedly connected to the outer wall of the rotating disc 17, connecting the rotating disc 17 to the stirring rod 19 and transmitting the rotational power of the disc to the stirring rod 19. Simultaneously, a reasonable distribution spacing ensures that the mixing range covers the upper layer. Multiple stirring rods 19 are fixedly connected to the outer wall of the multiple connecting columns 18, serving as the core working component for upper layer mixing. Their rod-like structure can break up clumps of sunflower seed meal raw material during rotation, allowing the raw material and extractant to mix. The solvent is brought into full contact, and microwave heating is used to achieve uniform heating and improve extraction efficiency. A turntable 20 is fixedly connected to the lower end of the outer wall of the rotating column 11, providing a mounting carrier for the lower stirring components. Its rotation drives the connecting column 21 and the anchor stirring rod 22 to stir the lower material. Multiple connecting columns 21 are fixedly connected to the outer wall of the turntable 20, connecting the turntable 20 and the anchor stirring rod 22 and transmitting rotational power. Its length is designed to fit the bottom size of the heat-resistant inner liner 4, ensuring that the anchor stirring rod 22 can operate close to the bottom of the inner liner. Multiple anchor-type stirring rods 22 are fixedly connected to the bottom ends of multiple connecting columns 21, adapting to the bottom shape of the heat-resistant inner liner 4. These rods thoroughly agitate the sunflower seed meal material deposited at the bottom of the inner liner, preventing sedimentation and clumping that could lead to incomplete extraction. Simultaneously, they scrape off material adhering to the inner liner wall, reducing material loss. A pressure relief mechanism 2 is installed at the top of the cover 14. This mechanism releases pressure; when the internal pressure of the extraction chamber exceeds a safe threshold, the pressure relief channel automatically opens via a mechanical structure to release excess pressure, preventing an explosion due to excessive pressure.

[0036] Please see the appendix Figure 6 Appendix Figure 7 and attached Figure 8The pressure relief mechanism 2 includes a second outer shell 201, a third outer shell 202 fixedly connected to the top of the second outer shell 201, multiple fixing screws 203 fixedly connected to the outer wall of the third outer shell 202 near its edge, a first disc 204 slidably connected to the inner wall of the third outer shell 202, a spring 206 fixedly connected to the bottom of the outer wall of the first disc 204, a top column 205 slidably connected to the inner wall of the first disc 204, a second disc 207 slidably connected to the bottom of the spring 206, a funnel-shaped sliding disc 208 slidably connected to the inner wall of the second outer shell 201, and a limit disc 20 fixedly connected to the inner wall of the second outer shell 201. 9. The inner wall of the outer shell 201 is provided with a buffer groove 210. The inner wall of the funnel-shaped sliding plate 208 is slidably connected with a plug 211. The outer wall of the plug 211 is slidably connected with an air-blocking valve 212. The outer wall of the cover 14 is provided with an air outlet 213. The lower end of the outer wall of the air outlet 213 is fixedly connected with a stabilizing pad 214. The upper end of the outer wall of the air outlet 213 is slidably connected with an air-blocking washer 215. The inner wall of the air-blocking washer 215 is provided with a limiting hole 216. The outer wall of the outer shell 201 is threadedly connected with a fixing screw 217. One end of the fixing screw 217 is fixedly connected with a push rod 218.

[0037] Specifically, the pressure relief mechanism 2 includes a second outer shell 201, which serves as the external protection and mounting housing for the pressure relief mechanism 2, providing a closed space for the internal spring 206 and disc 204 components to ensure stability and sealing during the pressure relief process. A third outer shell 202 is fixedly connected to the top of the second outer shell 201, forming a complete outer shell for the pressure relief mechanism 2 together with the second outer shell 201. This also provides upper mounting and movement space for the disc 204 and the top column 205. Multiple fixing screws 203 are fixedly connected to the outer wall of the third outer shell 202 near its edge, used to fix the third outer shell 202 to the second outer shell 201, ensuring the overall sealing and structural strength of the outer shell and preventing steam leakage from the shell connection during the pressure relief process. A disc is slidably connected to the inner wall of the third outer shell 202. Disk 204, as the upper force-bearing component of spring 206, moves upward synchronously and compresses spring 206 when the cavity pressure pushes the top column 205 upward. The spring force of spring 206 achieves pressure balance and reset after pressure relief. Spring 206 is fixedly connected to the bottom of the outer wall of disk 204. When the cavity pressure exceeds the sum of the spring force of spring 206 and the external pressure, spring 206 is compressed and opens to relieve pressure. After the pressure recovers, the component resets due to the spring force. The top column 205, as the core component for pressure transmission, is slidably connected to the inner wall of disk 204. Its lower end contacts the funnel-shaped sliding disk 208. When the cavity pressure rises, the top column 205 moves upward under pressure, pushing disk 204 to compress spring 206 and open the pressure relief channel. The bottom end of spring 206 is slidably connected to disc 207, which cooperates with disc 204 to fix the position of spring 206, ensuring that spring 206 always maintains axial force during compression and reset, avoiding displacement that would reduce pressure relief accuracy. It is also fixedly connected to top column 205 for synchronous movement. The inner wall of outer shell 201 is slidably connected to funnel-shaped sliding disc 208, which receives the high-pressure steam discharged from outlet 213 and concentrates the pressure to top column 205 through its funnel-shaped structure. It also buffers the steam flow rate during pressure relief. The inner wall of outer shell 201 is fixedly connected to limit the downward movement of funnel-shaped sliding disc 208, preventing it from moving excessively downward and disengaging from plug 211, thus ensuring the pressure relief mechanism... For the normal reset of mechanism 2, a buffer groove 210 is provided on the inner wall of the outer shell 201. During the pressure relief process, it provides a temporary buffer space for high-pressure steam, reduces the impact force when steam is discharged, avoids damage to the internal components of the pressure relief mechanism 2, and achieves smooth pressure release. A plug 211 is slidably connected to the inner wall of the funnel-shaped sliding disc 208. As the core sealing component of the pressure relief channel, it is normally pressed tightly against the air-blocking valve 212 by the elastic force of the spring 206, closing the air outlet 213. When the pressure exceeds the limit, it is pushed up to open the pressure relief. The air-blocking valve 212 is slidably connected to the outer wall of the plug 211, and it cooperates with the plug 211 to form a sealing structure. Its inner wall shape is adapted to the plug 211 to ensure the tightness of the seal, and at the same time provides guidance for the up and down movement of the plug 211.The outer wall of the cover 14 has an outlet 213, which serves as a connection channel between the extraction chamber and the pressure relief mechanism 2. It guides the high-pressure steam in the chamber into the pressure relief mechanism 2, acting as the primary channel for pressure release. A stabilizing pad 214 is fixedly connected to the lower end of the outer wall of the outlet 213, enhancing the sealing and structural strength of the connection between the outlet 213 and the cover 14, preventing steam leakage from the connection point, and also acting as a shock absorber. A baffle gasket 215 is slidably connected to the upper end of the outer wall of the outlet 213, further improving the sealing of the connection between the outlet 213 and the outer shell 201, preventing steam leakage from this gap before pressure relief, and ensuring the stability of the chamber pressure. The baffle gasket 215... A limiting hole 216 is provided on the inner wall of the outer casing 201, which cooperates with the fixing screw 217 to limit and fix the air-blocking washer 215, preventing it from shifting during device operation and affecting the sealing effect. The outer wall of the outer casing 201 is threadedly connected to the fixing screw 217, which serves two purposes: firstly, to fix the outer casing 201 to the cover 14, and secondly, to push the push rod 218 by adjusting its screwing depth, thereby achieving fine adjustment of the pressure relief threshold. One end of the fixing screw 217 is fixedly connected to the push rod 218, which pushes against the air-blocking washer 215 under the drive of the fixing screw 217. By changing the position of the air-blocking washer 215, the initial sealing pressure of the plug 211 is indirectly adjusted, thereby achieving precise adjustment of the pressure relief threshold.

[0038] Please see the appendix Figure 1 and attached Figure 2 A steel platform 37 is fixedly connected to the bottom of the support column 1. A staircase 23 is fixedly connected to the outer wall of the front end of the steel platform 37. A fire extinguisher 27 is fixedly connected to the top of the staircase 23. A workbench 28 is fixedly connected to the top of the steel platform 37. A controller 29 is fixedly connected to the front end of the outer wall of the workbench 28. A warning sign 33 is fixedly connected to the left end of the outer wall of the workbench 28. An alarm light 30 is fixedly connected to the top of the workbench 28. A flammable gas detector 31 is fixedly connected to the middle of the outer wall of the alarm light 30.

[0039] Specifically, a steel platform 37 is fixedly connected to the bottom of the support column 1, serving as the installation foundation and operating platform for the entire device. Made of high-strength steel, it can withstand the weight of all equipment components and provide a safe standing and operating area for operators. A staircase 23 is fixedly connected to the front outer wall of the steel platform 37, providing operators with access to and from the platform. The height and width of the steps conform to ergonomic design, ensuring safety and convenience for movement. A fire extinguisher 27 is fixedly connected to the top of the staircase 23 to respond to potential fires during the extraction process, especially fires caused by solvent leaks. It can be quickly retrieved for firefighting, enhancing the safety level of the device. A workbench 28 is fixedly connected to the top of the steel platform 37, serving as the mounting carrier for the controller 29 and alarm light 30 control and monitoring components. It also provides operators with a temporary surface for placing tools and recording data. The controller 29 is fixedly connected to the front of the outer wall of the workbench 28. The control core of the device can preset and adjust microwave power, stirring speed, extraction temperature and time parameters, and receive signals from various sensors to achieve automated control and real-time monitoring of the extraction process. A warning sign 33 is fixedly connected to the left end of the outer wall of the workbench 28, which is marked with key information such as equipment operation procedures, safety precautions and emergency shutdown procedures to remind operators to operate in accordance with regulations and enhance safety awareness. An alarm light 30 is fixedly connected to the top of the workbench 28 and is linked to the monitoring component of the flammable gas detector 31. When the equipment experiences abnormal pressure, gas leakage or temperature exceeding the standard, a visual alarm is issued by flashing light to remind the operator to deal with it in time. A flammable gas detector 31 is fixedly connected to the middle of the outer wall of the alarm light 30 to monitor the concentration of flammable solvent gas in the surrounding environment in real time. When the concentration exceeds the safety threshold, a signal is immediately sent to the controller 29 to trigger the alarm light 30 and simultaneously link the equipment to an emergency shutdown to prevent explosion accidents.

[0040] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 4 The outer wall of the steel platform 37 is fixedly connected to the right end of the inlet 26, the bottom end of the inlet 26 is fixedly connected to the low temperature storage tank 25, the bottom end of the low temperature storage tank 25 is fixedly connected to the support platform 24, the middle of the outlet 5 is fixedly connected to the filter screen 34, the outer wall of the multiple stirring rods 19 is slidably connected to the blades 35, the top of the cover 14 is fixedly connected to the inlet 36, the outer wall of the cover 14 is fixedly connected to the outer shell 32, and the disc 207 is fixedly connected to the top column 205.

[0041] Specifically, the right end of the outer wall of the steel platform 37 is fixedly connected to an inlet 26, which serves as the feeding channel for sunflower seed meal raw materials. Its large-diameter design facilitates rapid feeding of raw materials and can be connected to conveying equipment for automated feeding. The bottom end of the inlet 26 is fixedly connected to a low-temperature storage tank 25, which is used to store the sunflower seed meal raw materials at low temperatures before feeding. The low-temperature environment inhibits the oxidative degradation of chlorogenic acid in the raw materials, ensuring the extraction activity of the raw materials and improving the final extraction rate. The bottom end of the low-temperature storage tank 25 is fixedly connected to a support platform 24, which provides stable support for the low-temperature storage tank 25 and prevents it from being placed directly on the ground, thus avoiding moisture and corrosion. At the same time, the height of the storage tank can be adjusted to ensure precise alignment with the inlet 26. The middle of the outlet 5 is fixedly connected to a filter screen 34, which is used to perform preliminary filtration of the extraction mixture during the discharge process, separating the incompletely extracted solid residues, reducing the processing load of subsequent separation processes, and improving the subsequent purification efficiency. Multiple stirring rods 1 The outer wall of the 9 is slidably connected with a paddle 35, which can enhance the stirring effect of the stirring rod 19. The rotation of the paddle 35 generates a stronger fluid shear force, further breaking up the raw material clumps and promoting the uniformity of mixing between the raw material and the solvent. It is suitable for extraction systems with different viscosities. The top of the cover 14 is fixedly connected with a feed port 2 36, which serves as a feeding channel for the extraction solvent. The amount and speed of solvent input can be precisely controlled according to the requirements of the extraction process, so as to realize the synchronous and stepwise feeding of solvent and raw material. The outer wall of the cover 14 is fixedly connected with a shell 1 32, which serves as a protective shell for the helical gear 1 9 and helical gear 2 10, and the transmission components. It prevents external dust and impurities from entering the transmission mechanism and affecting the operating accuracy. At the same time, it avoids the safety accident caused by the operator contacting the rotating parts. The disc 2 207 is fixedly connected to the top column 205 to ensure that the two move synchronously. This allows the top column 205 to stably transmit pressure to the disc 1 204, ensuring the accuracy of the pressure sensing and the coordination of the action of the pressure relief mechanism 2.

[0042] Working principle: Start the explosion-proof motor 8, which drives the helical gear 3 13 and helical gear 2 10 to rotate. The rotation of helical gear 3 13 drives the rotating sleeve 16 connected to it to rotate. The rotation of rotating sleeve 16 drives the connecting column 1 18 and the stirring rod 19 to rotate, thereby stirring the middle and upper layers of the extraction device. The rotation of helical gear 2 10 drives the turntable 2 20, connecting column 2 21 and anchor stirring rod 22 to rotate synchronously, thereby scraping the bottom of the device to prevent the formation of sediment and stirring the bottom layer of the device. Then, start the microwave output extraction shell 3 to microwave extract the raw materials in the device. After the extraction is completed, open valve 6 to release the finished product and transfer it to the low temperature temporary storage tank 25 for storage, thus realizing the extraction of the raw materials.

[0043] When the extractant in the tank is under excessive pressure, it needs to be depressurized. High-pressure gas rushes in through the channel of the outlet 213, continuously pressurizing the gas-blocking valve 212. Due to the continuous pressure applied by the top column 205 to the disc 207, the funnel-shaped sliding disc 208 is blocked to achieve a seal. The top column 205 also applies pressure to the plug 211 to hold the gas-blocking valve 212 against the internal gas pressure. The gas-blocking gasket 215 further strengthens the sealing of the outlet 213. When the gas pressure exceeds the threshold, the gas-blocking valve 212 will be pushed open, pushing the plug 211, the funnel-shaped sliding disc 208 and the disc 207. Gas is ejected from the internal channel of the outer shell 201. Then the spring 206 restores the above components, realizing the release of the internal pressure of the extraction tank and preventing an explosion.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A microwave-assisted pilot-scale extraction device for chlorogenic acid from sunflower seed meal, comprising a support column (1), characterized in that: The top of the support column (1) is fixedly connected to a microwave output extraction shell (3), the inner wall of the microwave output extraction shell (3) is fixedly connected to a heat-resistant inner liner (4), the bottom of the heat-resistant inner liner (4) is fixedly connected to a discharge port (5), one end of the discharge port (5) is fixedly connected to a valve (6), the top of the support column (1) is fixedly connected to a cover (14), the outer wall of the cover (14) is fixedly connected to a fixing column (7), the inner wall of the fixing column (7) is fixedly connected to an explosion-proof motor (8), one end of the explosion-proof motor (8) is fixedly connected to a helical gear one (9), the upper end of the helical gear one (9) is meshed with a helical gear two (10), the inner wall of the helical gear two (10) is fixedly connected to a rotating column (11), the outer wall of the rotating column (11) is rotatably connected to a stabilizing bearing (12), the rotating column (11) The outer wall of the cover (14) is fixedly connected to a helical gear three (13), and the bottom of the outer wall of the helical gear three (13) is fixedly connected to a rotating sleeve (16). The outer wall of the cover (14) is fixedly connected to a plurality of fixing screws one (15) near the edge. The bottom of the rotating sleeve (16) is fixedly connected to a turntable one (17). The outer wall of the turntable one (17) is fixedly connected to a plurality of connecting pillars one (18). The outer walls of the plurality of connecting pillars one (18) are fixedly connected to a plurality of stirring rods (19). The lower end of the outer wall of the rotating pillar (11) is fixedly connected to a turntable two (20). The outer wall of the turntable two (20) is fixedly connected to a plurality of connecting pillars two (21). The bottom of the plurality of connecting pillars two (21) is fixedly connected to a plurality of anchor stirring rods (22). The top of the cover (14) is provided with a pressure relief mechanism (2). The pressure relief mechanism (2) is used for pressure relief.

2. The microwave-assisted pilot-scale extraction device for chlorogenic acid from sunflower seed meal according to claim 1, characterized in that: The pressure relief mechanism (2) includes a second outer shell (201), a third outer shell (202) is fixedly connected to the top of the second outer shell (201), a plurality of fixing screws (203) are fixedly connected to the outer wall of the third outer shell (202) near the edge, a disc (204) is slidably connected to the inner wall of the third outer shell (202), a spring (206) is fixedly connected to the bottom of the outer wall of the disc (204), a top column (205) is slidably connected to the inner wall of the disc (204), a disc (207) is slidably connected to the bottom of the spring (206), a funnel-shaped sliding disc (208) is slidably connected to the inner wall of the second outer shell (201), and a limit disc (209) is fixedly connected to the inner wall of the second outer shell (201). The inner wall of the outer shell (201) is provided with a buffer groove (210), the inner wall of the funnel-shaped sliding disc (208) is slidably connected with a plug (211), the outer wall of the plug (211) is slidably connected with an air-blocking valve (212), the outer wall of the cover (14) is provided with an air outlet (213), the lower end of the outer wall of the air outlet (213) is fixedly connected with a stabilizing pad (214), the upper end of the outer wall of the air outlet (213) is slidably connected with an air-blocking washer (215), the inner wall of the air-blocking washer (215) is provided with a limiting hole (216), the outer wall of the outer shell (201) is threadedly connected with a fixing screw (217), and one end of the fixing screw (217) is fixedly connected with a top rod (218).

3. The microwave-assisted pilot-scale extraction device for chlorogenic acid from sunflower seed meal according to claim 1, characterized in that: A steel platform (37) is fixedly connected to the bottom end of the support column (1), a staircase (23) is fixedly connected to the front outer wall of the steel platform (37), and a fire extinguisher (27) is fixedly connected to the top of the staircase (23).

4. The microwave-assisted pilot-scale extraction device for chlorogenic acid from sunflower seed meal according to claim 3, characterized in that: The top of the steel platform (37) is fixedly connected to a workbench (28), the front end of the outer wall of the workbench (28) is fixedly connected to a controller (29), and the left end of the outer wall of the workbench (28) is fixedly connected to a warning sign (33).

5. The microwave-assisted pilot-scale extraction device for chlorogenic acid from sunflower seed meal according to claim 4, characterized in that: An alarm light (30) is fixedly connected to the top of the workbench (28), and a flammable gas detector (31) is fixedly connected to the middle of the outer wall of the alarm light (30).

6. The microwave-assisted pilot-scale extraction device for chlorogenic acid from sunflower seed meal according to claim 3, characterized in that: The steel platform (37) has a feed inlet (26) fixedly connected to the right end of its outer wall. The feed inlet (26) has a low-temperature storage tank (25) fixedly connected to its bottom end. The low-temperature storage tank (25) has a support platform (24) fixedly connected to its bottom end.

7. The microwave-assisted pilot-scale extraction device for chlorogenic acid from sunflower seed meal according to claim 1, characterized in that: A filter screen (34) is fixedly connected to the middle of the discharge port (5), and blades (35) are slidably connected to the outer walls of the plurality of stirring rods (19).

8. The microwave-assisted pilot-scale extraction device for chlorogenic acid from sunflower seed meal according to claim 2, characterized in that: The top of the cover (14) is fixedly connected to the inlet port 2 (36), the outer wall of the cover (14) is fixedly connected to the outer shell 1 (32), and the disc 2 (207) is fixedly connected to the top column (205).

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