A distillation extraction apparatus for agarwood essential oil

Abstract

This invention relates to the technical field of essential oil distillation extraction apparatus, specifically an agarwood essential oil distillation extraction apparatus. It includes a base frame on which a distillation kettle, a motor, and a condenser are fixedly mounted. It also includes a vibrating frame slidably connected to the distillation kettle, with a return spring between them. A rotating plate and a hollow gear sleeve driven by the motor are rotatably connected to the vibrating frame. A feeding tube is rotatably connected to the hollow gear sleeve and fixedly connected to the rotating plate. A lower gear ring is fixedly mounted on the hollow gear sleeve. A drive mechanism is provided on the output shaft of the motor, which drives the vibrating frame to cyclically vibrate with varying amplitude along the axis of the distillation kettle. The beneficial effects of this invention are: by driving the vibrating frame to cyclically vibrate with varying amplitudes of 20mm, 30mm, and 40mm along the axis of the distillation kettle through the drive mechanism, it simultaneously drives the feeding tube to oscillate ±135°, coordinating with the rotation of the precipitation shaft, the lifting shaft, and the two stirring shafts, forming a three-dimensional composite extraction system of amplitude-variable vibration, oscillation, and component rotation.

Description

Technical Field

[0001] This invention relates to the field of essential oil distillation and extraction apparatus, specifically to an agarwood essential oil distillation and extraction apparatus. Background Technology

[0002] Agarwood essential oil, as a precious fragrance, health product, and medicinal raw material, has always had a focus of industry research in its distillation extraction technology. Currently, existing agarwood essential oil distillation extraction equipment faces many technical bottlenecks in practical applications, which restrict the improvement of extraction efficiency, raw material utilization rate, and essential oil quality. The specific technical problems are as follows: Existing agarwood essential oil distillation extraction devices generally adopt a single motion mode or a combination of static soaking and distillation. The core defect is that they cannot achieve the three-dimensional dynamic synergy of raw materials, extraction media, and auxiliary extraction media. This problem directly leads to difficulties in improving essential oil extraction efficiency, raw material utilization, and product quality. Specifically, firstly, in the single motion mode, agarwood raw materials are prone to stratification, accumulation, or localized adhesion to the inner wall of the equipment in the distillation vessel. A stable boundary layer is formed between the raw materials and the extraction media, making it difficult for the extraction media to penetrate into the micropores, fiber gaps, and cell walls inside the raw materials. The rate at which essential oil migrates from the inside of the raw materials to the medium is extremely slow, often requiring extended distillation time to achieve a certain extraction rate, resulting in low production efficiency. Secondly, existing devices using CO2-assisted extraction are mostly static pump-in or fixed-point gas supply modes. CO2 bubbles tend to aggregate into large bubble clusters, which cannot accurately penetrate into the fine areas after the raw materials are broken along with the movement of the raw materials. This not only makes it difficult for CO2 to play its role in stripping and carrying essential oil, but also causes uneven local stirring due to bubble aggregation, further aggravating the problem of raw material accumulation. Based on this, the present invention provides an agarwood essential oil distillation extraction apparatus to solve the problems mentioned in the background art. Summary of the Invention

[0003] This invention addresses the technical problems existing in the prior art by providing an agarwood essential oil distillation extraction device. This solves the problem that existing agarwood essential oil distillation extraction devices generally adopt a single motion mode or a combination of static soaking and distillation, which cannot achieve the three-dimensional dynamic synergistic effect of raw materials, extraction media and auxiliary extraction media.

[0004] The technical solution of this invention to solve the above-mentioned technical problems is as follows: A distillation extraction device for agarwood essential oil includes a base frame on which a distillation kettle, a motor, and a condenser are fixedly mounted. It also includes a vibrating frame slidably connected to the distillation kettle, with a return spring between them. A rotating plate and a hollow toothed sleeve driven by the motor are rotatably connected to the vibrating frame. A feeding tube is rotatably connected to the hollow toothed sleeve and fixedly connected to the rotating plate. A lower toothed ring is fixedly mounted on the hollow toothed sleeve. A drive mechanism is provided on the output shaft of the motor. The drive mechanism drives the vibrating frame to circulate and vibrate with varying amplitude along the axis of the distillation kettle and drives the feeding tube to swing within ±135°. The bottom end of the feeding tube is connected to an inclined tube. The tube is connected to an extraction screen and a reflux screen at both ends. A branch pipe connects the extraction screen and the reflux screen. A precipitation shaft, a lifting shaft, and two stirring shafts are rotatably connected to the rotating plate. A lower gear that meshes with the lower gear ring is installed on the precipitation shaft, the lifting shaft, and the stirring shaft. A crushing blade and a stirring rod are alternately installed on the precipitation shaft at the position corresponding to the inside of the extraction screen. Spray holes are arrayed on the precipitation shaft. A spiral lifting blade is installed on the lifting shaft at the position corresponding to the inside of the reflux screen. Spiral stirring blades are installed on both stirring shafts, and the spiral directions of the two spiral stirring blades are opposite. A feeding pipe is connected to the bottom of the reflux screen. An annular ultrasonic emitting device is installed between the feeding pipe and the inclined tube. It also includes a condenser shaft rotatably connected to the vibrating frame, a condenser tube connecting the distillation vessel and the condenser, a condenser coil connected to the condenser tube on the condenser shaft, and an array of baffles installed on the condenser shaft. An extraction tube connected to the condenser coil is installed at the bottom of the condenser, and a CO2 separation tube is connected to the extraction tube. The distillation vessel is equipped with a pumping system that pumps CO2 into the nozzle.

[0005] Based on the above technical solution, the present invention can be further improved as follows.

[0006] As a preferred technical solution of the present invention, a feed pipe is installed on the top of the base frame, the feed pipe is connected to the injection swirl pipe, a valve body is provided inside the feed pipe, a central control unit is installed on the end face of the base frame, an electric heating jacket is provided on the outer periphery of the distillation vessel, and a temperature probe and a pressure probe are installed on the distillation vessel. The data terminals of the temperature probe and the pressure probe are both connected to the central control unit. A slag discharge valve connected to the feed pipe is installed at the bottom of the distillation vessel, and an extraction medium injection pipe is connected to the upper part of the distillation vessel.

[0007] As a preferred embodiment of the present invention, the driving mechanism includes a main shaft, a secondary shaft, and a driving wheel rotatably connected to the vibrating frame. A first transmission belt is drivenly connected to the output shaft of the motor, and the first transmission belt is drivenly connected to the main shaft. An upper gear ring is rotatably sleeved on the feed pipe. Upper gears are mounted on both the main shaft and the secondary shaft, and both upper gears are drivenly connected to the upper gear ring. Bevel gears are mounted on both the secondary shaft and the driving wheel, and the two bevel gears mesh orthogonally along the circumferential direction. Three protrusions are arranged in an array on the driving wheel. The vibrating frame is rotatably connected to a driven roller. Three protrusions alternately abut against the driven roller, and the driving strokes of the three protrusions on the driven rollers are different. A hollow shaft is rotatably connected to the vibrating frame. The hollow shaft is linked with the main shaft. A half-tooth gear and an intermediate gear are installed on the hollow shaft. A reciprocating gear ring that meshes with the half-tooth gear is installed on the injection tube. A torsion spring is installed between the injection tube and the vibrating frame. A passive gear ring that meshes with the intermediate gear is installed on the hollow gear sleeve. A second transmission belt drives between the hollow shaft and the condensing shaft.

[0008] As a preferred technical solution of the present invention, the hollow shaft is provided with a hollow guide groove with an opening at the top and slidably connected to the main shaft, and the cross-sections of the hollow guide groove and the main shaft are both regular hexagonal.

[0009] As a preferred technical solution of the present invention, the driving strokes of the three protrusions on the driven rollers in the clockwise direction are 20mm, 30mm and 40mm respectively.

[0010] As a preferred technical solution of the present invention, the condensing shaft is provided with an upper flow channel and a lower flow channel. The condensing shaft is provided with two sealing parts that fit with the condensing tank. Both sealing parts are provided with through holes arranged in an array. The two sets of through holes are respectively connected to the upper flow channel and the lower flow channel. The through holes on the upper sealing part are connected to the condensing conduit, and the through holes on the lower sealing part are connected to the extraction tube. The two ends of the condensing coil are respectively connected to the upper flow channel and the lower flow channel.

[0011] As a preferred technical solution of the present invention, it further includes a sealing top plate slidably connected to the top of the distillation vessel. The feeding swirl tube, extraction mesh tube, and reflux mesh tube are all fixedly connected to the sealing top plate. A sealing ring connected to the distillation vessel is installed on the outer periphery of the sealing top plate. The lower part of the extraction mesh tube, reflux mesh tube, and feeding pipe are all provided with mesh holes arranged in an array. The axis of the mesh holes is perpendicular to the axis of the distillation vessel.

[0012] As a preferred technical solution of the present invention, the pumping system includes a gas distribution plate installed on the reflux mesh cylinder, an inner gas chamber is opened in the gas distribution plate, a pumping pipe is connected to the inner gas chamber, the pumping pipe is fixedly connected to the branch pipe, an air passage is opened on the feed pipe, each of the spray holes is connected to the air passage, the pumping pipe is connected to the air passage, a sealing rubber head connected to the air passage is installed at its top end, a gas supply ring pipe is rotatably connected to the inner gas chamber, a CO2 pump pipe is fixedly installed on the distillation kettle, and a metal corrugated pipe is connected between the CO2 pump pipe and the gas supply ring pipe.

[0013] As a preferred technical solution of the present invention, the annular ultrasonic emitting device is disposed between the extraction mesh cylinder and the reflux mesh cylinder. The annular ultrasonic emitting device includes an ultrasonic emitting cylinder, which is an annular hollow structure with its axis collinear with the axis of the distillation vessel. The inner and outer walls of the ultrasonic emitting cylinder are both arc-shaped ultrasonic emitting surfaces, and the inner and outer walls are evenly covered with anti-slip and wear-resistant coatings. Ultrasonic transducers are uniformly embedded in the cylinder wall of the ultrasonic emitting cylinder.

[0014] As a preferred embodiment of the present invention, the condenser is connected to a cooling water inlet pipe and a cooling water outlet pipe.

[0015] The beneficial effects of this invention are: 1. This invention uses a drive mechanism to drive a vibrating frame to perform cyclic amplitude vibrations of 20mm, 30mm, and 40mm along the axis of the distillation vessel, simultaneously causing the feed swirl tube to oscillate ±135°. Combined with the rotation of the precipitation shaft, lifting shaft, and two stirring shafts, this forms a three-dimensional composite extraction system of amplitude vibration, oscillation, and component rotation. This solves the problems of raw material stratification, accumulation, and boundary layer obstruction in existing technologies. The cyclic amplitude vibration of the vibrating frame dynamically loosens raw material clumps, breaks down the stable boundary layer between the raw material and the extraction medium, and prevents raw material from adhering to the inner wall of the equipment. The large-scale oscillation of the feed swirl tube drives the extraction... The entire distillation space is covered by the pick-and-place mesh and the reflux mesh. Combined with the shearing action of the reverse spiral stirring blades and the upward conveying action of the spiral lifting blades, the raw materials are greatly agitated and dispersed within the distillation vessel, significantly increasing the contact area between the raw materials and the extraction medium. This multi-dimensional, coordinated motion changes the existing extraction logic of single motion or static soaking, allowing the extraction medium to quickly penetrate into the micropores, fiber gaps, and cell walls of the raw materials. The essential oil migration rate is significantly improved compared to existing technologies, effectively shortening the distillation cycle. The raw material utilization rate is higher than that of traditional devices, achieving dynamic deep coupling between the raw materials and the medium.

[0016] 2. Addressing the technical shortcomings of existing CO2-assisted extraction devices, such as static bubble aggregation and inaccurate penetration, this invention constructs a dynamic targeted gas supply mechanism through the coordinated linkage of a pumping system and a composite motion system. CO2 is delivered to the array of nozzles on the precipitation shaft via the pumping system. The nozzles participate in rotation, revolution, and amplitude vibration synchronously with the precipitation shaft, allowing CO2 bubbles to precisely diffuse with the three-dimensional dynamic movement of the raw material at the moment of ejection. This avoids the bubble aggregation problem caused by traditional fixed-point gas supply. The dynamically dispersed micro CO2 bubbles can continuously penetrate into the fine areas after the raw material is broken. On the one hand, the gas-driven scouring action forcibly strips the essential oil molecules adsorbed on the surface of the raw material matrix, preventing the essential oil from being re-adsorbed back into the raw material. On the other hand, the osmotic pressure of CO2 opens up the closed pores of the raw material, creating channels for the extraction medium. This forms a closed-loop synergistic effect of crushing, penetration, and stripping with the mechanical crushing of the pulverizing blade. This deep linkage between the gas supply mode and the composite motion changes the current situation where bubbles and raw materials are relatively static in CO2-assisted extraction, maximizing the stripping and carrying effect of CO2.

[0017] 3. This invention links the annular ultrasonic emitting device with a composite motion and CO2 gas supply system to form a multi-field coupled environment of ultrasonic field, gas-liquid-solid three-phase flow, and shear field. This solves the problem that the single extraction method in the prior art has limited efficiency and is prone to damage to the quality of essential oil. The 360° arc-shaped emitting surface of the annular ultrasonic emitting device generates a uniform ultrasonic field, which works synergistically with the dynamic motion of CO2 bubbles. The micro-jet and local high pressure generated by the bubbles under the ultrasonic cavitation effect are superimposed with the osmotic pressure of CO2, which doubly destroys the cell wall structure of agarwood and accelerates the release of essential oil from the cells. At the same time, the shear field formed by the reverse spiral stirring blades breaks the laminar flow state of the extraction medium. Combined with the micro-convective vortex driven by CO2 bubbles, it further promotes the separation of essential oil from the medium.

[0018] 4. This invention, through the structural design of the extraction screen cylinder, reflux screen cylinder, branch pipe, and feed pipe, combined with the coordinated movement of the lifting shaft and stirring shaft, constructs a highly efficient material circulation system. This solves the problems of insufficient raw material processing and serious waste in existing technologies. The spiral lifting blades transport the raw material in the reflux screen cylinder upwards, and with the oscillation of the injection vortex tube and the vibration of the vibrating frame, the raw material continuously circulates to the extraction screen cylinder to receive secondary crushing by the crushing blades and loosening by the stirring rod, ensuring that the raw material particles are uniformly fined. This avoids the problem of some raw materials not fully contacting the extraction medium in traditional devices. The vertical mesh design on the extraction screen cylinder, reflux screen cylinder, and feed pipe ensures uniform diffusion of the extraction medium and prevents incompletely crushed particles from entering the main body of the distillation vessel, reducing impurity interference. This material circulation and the coordinated movement of multiple moving parts ensure that the raw material is always in a highly efficient processing state throughout the extraction process. The raw material utilization rate is significantly improved compared to existing technologies, while avoiding the decrease in extraction efficiency caused by raw material accumulation, further enhancing the production efficiency of the device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a distillation and extraction apparatus for agarwood essential oil. Figure 2 for Figure 1 A magnified schematic diagram of the partial structure at point A in the middle; Figure 3 for Figure 1 A structural diagram from another perspective; Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure; Figure 5 for Figure 4 A magnified schematic diagram of the local structure at point B; Figure 6 for Figure 4 A magnified schematic diagram of the structure at point C in the middle; Figure 7 This is a schematic cross-sectional view of the condenser conduit and condenser coil. Figure 8 This is a schematic diagram of the upper toothed ring and the extraction screen cylinder.

[0020] The attached diagram lists the components represented by each number as follows: 1. Base frame; 2. Distillation kettle; 3. Motor; 4. Condenser; 5. Vibrating frame; 6. Rotary plate; 7. Hollow gear sleeve; 8. Feeding rotary tube; 9. Lower gear ring; 10. Inclined tube; 11. Extraction screen cylinder; 12. Reflux screen cylinder; 13. Branch pipe; 14. Precipitation shaft; 15. Lifting shaft; 16. Stirring shaft; 17. Lower gear; 18. Crusher; 19. Stirring rod; 20. Spray nozzle; 21. Spiral lifting blade; 22. Spiral stirring blade; 23. Feeding pipe; 24. Annular ultrasonic transmitter; 25. Condenser shaft; 26. Condenser guide tube; 27. Condenser coil; 28. Turbine blade; 29. ​​Extraction tube; 30. CO2 separator 31. Feed pipe; 32. Central control unit; 33. Heating jacket; 34. Slag discharge valve; 35. Extraction medium injection pipe; 36. Main shaft; 37. Secondary shaft; 38. Drive wheel; 39. Upper gear ring; 40. Upper gear; 41. Protrusion; 42. Driven roller; 43. Hollow shaft; 44. Half gear; 45. Intermediate gear; 46. Reciprocating gear ring; 47. Torsion spring; 48. Passive gear ring; 49. Upper flow channel; 50. Lower flow channel; 51. Through hole; 52. Sealing top plate; 53. Gas distribution plate; 54. Pump pipe; 55. Gas supply ring pipe; 56. CO2 pump pipe; 57. Return spring. Detailed Implementation

[0021] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0022] The present invention provides the following preferred embodiments, such as Figure 1-8 As shown, an agarwood essential oil distillation extraction device includes a base frame 1, on which a distillation kettle 2, a motor 3 and a condenser 4 are fixedly mounted; A central control unit 32 is installed on the end face of the base frame 1. An electric heating jacket 33 is provided on the outer periphery of the distillation vessel 2. A temperature probe and a pressure probe are installed on the distillation vessel 2. The data terminals of the temperature probe and the pressure probe are connected to the central control unit 32. An extraction medium injection pipe 35 is connected to the upper part of the distillation vessel 2. The central control unit 32 can receive data from the temperature probe and pressure probe in real time, and precisely adjust the heating power of the electric heating jacket 33 to achieve closed-loop control of distillation temperature and pressure, thus avoiding a decrease in essential oil extraction rate or damage to quality due to fluctuations in environmental parameters. The extraction medium injection tube 35 can inject extraction medium quantitatively as needed. With precise parameter control, it can adapt to agarwood raw materials of different qualities and particle sizes, significantly improving the automation and controllability of the extraction process, reducing errors caused by human intervention, and ensuring the consistency and stability of essential oil product quality between batches.

[0023] It also includes a vibrating frame 5 that is slidably connected to the distillation vessel 2, and a return spring 57 is provided between the two. Two guide grooves that are slidably connected to the vibrating frame 5 are provided on the distillation vessel 2. A rotating plate 6 and a hollow toothed sleeve 7 driven by a motor 3 are rotatably connected to the vibrating frame 5. An injection tube 8 is rotatably connected to the hollow toothed sleeve 7, and the injection tube 8 is fixedly connected to the rotating plate 6. A feed pipe 31 is installed on the top of the base frame 1. The feed pipe 31 is connected to the injection swirl pipe 8. A valve body is provided inside the feed pipe 31. A lower gear ring 9 is fixedly mounted on the hollow gear sleeve 7. A drive mechanism is provided on the output shaft of the motor 3. The drive mechanism drives the vibrating frame 5 to circulate and vibrate along the axis of the distillation kettle 2 and drives the feeding tube 8 to swing within ±135°. The drive mechanism includes a main shaft 36, a secondary shaft 37 and a drive wheel 38 rotatably connected to the vibrating frame 5. A first transmission belt is driven to the output shaft of the motor 3. The first transmission belt is driven to the main shaft 36. An upper gear ring 39 is rotatably sleeved on the feed pipe 31. Upper gears 40 are installed on both the main shaft 36 and the secondary shaft 37. Both upper gears 40 are driven to the upper gear ring 39. Both the secondary shaft 37 and the drive wheel 38 are equipped with bevel gears. The two bevel gears mesh orthogonally. Along the circumferential direction, the drive wheel 38 is provided with three protrusions 41 arranged in an array. The vibrating frame 5 is rotatably connected to the driven roller 42. The three protrusions 41 alternately abut against the driven roller 42, and the driving stroke of the three protrusions 41 on the driven roller 42 is different. In a preferred embodiment, the driving strokes of the three protrusions 41 to the driven roller 42 in the clockwise direction are 20mm, 30mm and 40mm respectively; The protrusion 41 has a sinusoidal curve outline to smoothly drive the driven roller 42; The drive wheel 38 alternately abuts against the driven roller 42 through three protrusions 41 with different drive strokes, causing the vibrating frame 5 to generate cyclic amplitude vibration along the axis of the distillation vessel 2. Compared with the vibration structure with fixed amplitude, the amplitude vibration can effectively break the boundary layer between the agarwood raw material and the extraction medium, avoid local accumulation or adhesion of the raw material, and promote full contact and penetration between the two. At the same time, the mechanical force generated by vibration can help loosen the structure of raw materials and accelerate the migration of essential oils from the inside of the raw materials into the medium. Combined with subsequent stirring, ultrasonic and other functions, it forms a synergistic effect, which greatly improves the extraction efficiency of essential oils and the utilization rate of raw materials. A hollow shaft 43 is rotatably connected to the vibrating frame 5, and the hollow shaft 43 is linked to the main shaft 36; The hollow shaft 43 has a hollow guide groove with an opening at the top and is slidably connected to the main shaft 36. Both the hollow guide groove and the main shaft 36 have a regular hexagonal cross section. A half-tooth gear 44 and an intermediate gear 45 are installed on the hollow shaft 43. A reciprocating gear ring 46 that meshes with the half-tooth gear 44 is installed on the injection tube 8. A torsion spring 47 is installed between the injection tube 8 and the vibrating frame 5. A passive gear ring 48 that meshes with the intermediate gear 45 is installed on the hollow gear sleeve 7. The hollow shaft 43 has a hollow guide groove with an opening at the top and is slidably connected to the main shaft 36. Both the hollow guide groove and the main shaft 36 have a regular hexagonal cross section. The hollow guide groove with a regular hexagonal structure and the main shaft 36 realize the dual functions of rotational power transmission and axial sliding adaptation. When the main shaft 36 rotates, the hollow shaft 43 is driven to rotate synchronously through the rigid fit of the regular hexagon, ensuring that the power transmission is smooth and lossless. When the vibrating frame 5 vibrates axially, the hollow shaft 43 can slide axially along the regular hexagonal structure of the main shaft 36, avoiding power transmission interruption or component jamming due to vibration displacement. This design solves the power coordination problem under dynamic working conditions, ensuring the synchronous linkage of multiple actions such as the ±135° swing of the injection tube 8 and the rotation of the condensing shaft 25, significantly improving the overall reliability and stability of the device. The bottom end of the injection tube 8 is connected to an inclined tube 10, and the two ends of the inclined tube 10 are respectively connected to an extraction screen 11 and a reflux screen 12. A branch tube 13 is connected between the extraction screen 11 and the reflux screen 12. The extraction screen 11, the reflux screen 12, and the distillation kettle 2 are all made of 304 stainless steel. The rotary plate 6 is rotatably connected to a precipitation shaft 14, a lifting shaft 15, and two stirring shafts 16. The precipitation shaft 14, the lifting shaft 15, and the stirring shaft 16 are all equipped with a lower gear 17 that meshes with the lower gear ring 9. The precipitation shaft 14 is equipped with a pulverizing blade 18 and a stirring rod 19, which are alternately installed on the position corresponding to the inner side of the extraction screen cylinder 11. The precipitation shaft 14 is also equipped with an array of spray holes 20. The lifting shaft 15 is equipped with a spiral lifting blade 21, which is installed on the position corresponding to the inner side of the return screen cylinder 12. The two stirring shafts 16 are equipped with spiral stirring blades 22, and the spiral directions of the two spiral stirring blades 22 are opposite. The bottom end of the return mesh cylinder 12 is connected to the feed pipe 23, and an annular ultrasonic transmitting device 24 is installed between the feed pipe 23 and the inclined pipe 10. The lower parts of the extraction screen cylinder 11, the reflux screen cylinder 12, and the feed pipe 23 are all provided with mesh holes arranged in an array, and the axis of the mesh holes is perpendicular to the axis of the distillation vessel 2; A slag discharge valve 34 connected to the feed pipe 23 is installed at the bottom of the distillation vessel 2; The mesh design perpendicular to the axis of the distillation vessel 2 allows the extraction medium to overflow evenly from the mesh and diffuse throughout the entire area of ​​the distillation vessel 2, avoiding insufficient essential oil extraction caused by uneven flow rate of the medium in certain areas. The mesh also acts as a filter, preventing incompletely crushed agarwood raw material particles from entering the main body of the distillation vessel 2, reducing impurities in the subsequent condensation and separation stages, and lowering the difficulty of purification. The slag discharge valve 34 at the bottom of the distillation vessel 2 is directly connected to the feed pipe 23, which can discharge the residue in a timely manner without interrupting the distillation process, avoiding the accumulation of residue that occupies the effective reaction space and affects the circulation of the medium, thus significantly improving the continuity of production. In addition, the mesh structure can reduce the adhesion of raw materials to the inner walls of the extraction mesh cylinder 11 and the reflux mesh cylinder 12, further improving the utilization rate of raw materials and reducing waste; During distillation, the conveying direction of the spiral lifting blade 21 is upward, and the extraction screen cylinder 11 and the reflux screen cylinder 12 are driven by the feeding swirl tube 8 to rotate synchronously. The extraction screen cylinder 11, the reflux screen cylinder 12, the spiral lifting blade 21, the crushing blade 18 and the stirring rod 19 can also vibrate synchronously with varying amplitude. Through the realization of the above-mentioned composite motion technology, the agarwood raw material can be turned over, dispersed and vibrated in three-dimensional dynamic processing in the distillation kettle 2. When the spiral lifting blade 21 conveys the raw material upward, it can break the static stratification of the raw material. Combined with the revolution of the extraction screen cylinder 11 and the reflux screen cylinder 12, the raw material is evenly distributed throughout the entire area, avoiding excessive accumulation of raw material in some areas. Synchronous amplitude vibration can further loosen raw material clumps, enhance the relative movement between raw materials and extraction medium, greatly increase the contact area and penetration efficiency between the two, and effectively peel off the essential oil that has been precipitated on the surface of the raw materials to prevent it from being re-adsorbed back into the raw materials. Ultimately, it achieves a dual improvement in essential oil extraction efficiency and raw material utilization. Compared with a single motion mode, the extraction cycle can be effectively shortened. An annular ultrasonic emitting device 24 is disposed between the extraction mesh cylinder 11 and the reflux mesh cylinder 12. The annular ultrasonic emitting device 24 includes an ultrasonic emitting cylinder, which is an annular hollow structure. Its axis is collinear with the axis of the distillation vessel 2. The inner and outer walls of the ultrasonic emitting cylinder are arc-shaped ultrasonic emitting surfaces, and the inner and outer walls are evenly covered with anti-slip and wear-resistant coatings. Ultrasonic transducers are evenly embedded in the cylinder wall of the ultrasonic emitting cylinder. The annular hollow ultrasonic transmitting cylinder is coaxially set with the distillation kettle 2, and in conjunction with the arc-shaped ultrasonic transmitting surface, it can achieve 360° coverage of the extraction mesh cylinder 11 and the reflux mesh cylinder 12 area with ultrasonic waves without dead angles, ensuring that all agarwood raw materials can be subjected to uniform ultrasonic action; The circumferential array embedding design of the ultrasonic transducer ensures uniform distribution of ultrasonic energy, avoiding excessive local energy that could damage the raw material structure or deteriorate the essential oil. At the same time, the arc-shaped emitting surface can concentrate ultrasonic energy, enhance the ultrasonic cavitation effect, efficiently destroy the cell wall structure of agarwood, and accelerate the release of essential oil. The anti-slip and wear-resistant coating on the inner and outer walls can not only extend the service life of the components, but also reduce energy loss during ultrasonic propagation. The synergistic effect of ultrasound, vibration, and stirring can effectively remove essential oils adsorbed on the surface of raw materials, promoting the separation of essential oils from the medium. Compared with traditional single ultrasound or single stirring structures, the extraction efficiency is improved, the purity of essential oils is higher, and the impurity content is significantly reduced. It also includes a condenser shaft 25 rotatably connected to the vibrating frame 5, and a second transmission belt is connected between the hollow shaft 43 and the condenser shaft 25.

[0024] The condenser 4 is connected to a cooling water inlet pipe and a cooling water outlet pipe respectively. The distillation vessel 2 and the condenser 4 are connected by a condenser conduit 26. The condenser shaft 25 is connected to a condenser coil 27 that is connected to the condenser conduit 26. The condenser shaft 25 is also equipped with an array of baffles 28. The bottom of the condenser 4 is equipped with an extraction tube 29 that is connected to the condenser coil 27. The extraction tube 29 is connected to a CO2 separation tube 30. The condenser shaft 25 has an upper flow channel 49 and a lower flow channel 50. The condenser shaft 25 has two sealing parts that fit with the condenser tank 4. Both sealing parts have through holes 51 arranged in an array. The two sets of through holes 51 are connected to the upper flow channel 49 and the lower flow channel 50 respectively. The through holes 51 on the upper sealing part are connected to the condenser conduit 26, and the through holes 51 on the lower sealing part are connected to the extraction tube 29. The two ends of the condenser coil 27 are connected to the upper flow channel 49 and the lower flow channel 50 respectively. The upper flow channel 49 and lower flow channel 50 of the condenser shaft 25 and the through hole 51 of the sealing part form a closed fluid channel to ensure the smooth flow of essential oil vapor and condensate and prevent leakage. The condenser coil 27 significantly increases the contact area between steam and cooling water. Combined with the turbulence vanes 28 driven by the rotation of the condenser shaft 25, it can break the laminar flow state of the cooling water and form a turbulent effect, which significantly improves the heat exchange efficiency and allows the essential oil vapor to condense into liquid quickly, reducing the loss of essential oil due to untimely condensation. The design of the cooling water inlet pipe and cooling water outlet pipe enables the recycling of cooling water and reduces energy consumption; CO2 separator 30 can separate CO2 gas from essential oils after condensation; It also includes a sealing top plate 52 that is slidably connected to the top of the distillation vessel 2. The feeding tube 8, the extraction screen 11 and the reflux screen 12 are all fixedly connected to the sealing top plate 52. A sealing ring connected to the distillation vessel 2 is installed on the outer periphery of the sealing top plate 52. The sealing top plate 52 moves synchronously with the feeding swirl tube 8, the extraction screen cylinder 11, and the reflux screen cylinder 12. Its outer sealing ring is always tightly fitted with the inner wall of the distillation kettle 2, achieving efficient sealing under dynamic working conditions and preventing steam leakage during distillation. This avoids the loss of essential oil and eliminates the safety hazards caused by steam leakage. The sliding connection design of the sealing top plate 52 perfectly adapts to the vibration of the vibrating frame 5 and the swinging motion of the injection tube 8, without interfering with the movement of the core working parts, thus solving the technical problem that traditional fixed sealing structures cannot adapt to dynamic parts. Stable sealing performance provides a constant pressure environment inside the distillation vessel 2, ensuring the smooth operation of the CO2 pump system and distillation process, and providing the necessary pressure conditions for efficient extraction of essential oils; A pumping system for pumping CO2 into the nozzle 20 is fixedly installed on the distillation vessel 2.

[0025] The air pumping system includes a gas distribution plate 53 installed on the return mesh cylinder 12. An inner air chamber is opened in the gas distribution plate 53. A pumping pipe 54 is connected to the inner air chamber. The pumping pipe 54 is fixedly connected to the branch pipe 13. An air passage is opened on the feed pipe 23. Each nozzle 20 is connected to the air passage. The pumping pipe 54 is connected to the air passage. A sealing rubber head connected to the air passage is installed at its top. A gas supply ring pipe 55 is rotatably connected to the inner air chamber. A CO2 pump pipe 56 is fixedly installed on the distillation kettle 2. A metal corrugated pipe is connected between the CO2 pump pipe 56 and the gas supply ring pipe 55.

[0026] The sealing rubber head at the top of the pump pipe 54 is tightly connected to the air passage of the feed pipe 23. With the continuous connection design of the pump pipe 54, air passage and nozzle 20, a closed gas delivery channel is formed, which effectively avoids CO2 gas leakage during transmission, ensures that the gas is accurately guided to each nozzle 20, improves gas utilization, solves the problems of poor sealing and gas waste in traditional gas supply structure, and simplifies the connection structure between the air passage and the pump pipe 54, reducing the difficulty of assembly and maintenance. The compound motion puts the agarwood raw material in a three-dimensional dynamic dispersion state. The gap between the raw material particles changes continuously with the motion. Meanwhile, the nozzle 20 rotates, revolves, and vibrates synchronously with the precipitation shaft 14, forming a dynamic targeted gas supply mode. The continuously pumped CO2 bubbles do not gather into large bubbles, but instead precisely penetrate into the micropores, fiber gaps, and cell wall rupture areas after the raw material is broken, filling the instantaneous gaps caused by the dynamic displacement of the raw material during the compound motion. During the dynamic shuttle process of the CO2 bubbles inside the raw material, on the one hand, the gas-driven flushing action forces the precipitated essential oil molecules adsorbed on the surface of the raw material matrix to peel off, preventing the essential oil from being adsorbed back into the interior due to the vibration of the raw material. On the other hand, the osmotic pressure of CO2 can open up the closed pores inside the raw material, making it easier for the extraction medium to enter. Combined with the mechanical crushing of the pulverizer 18, a closed-loop synergistic effect of crushing, penetration, and peeling is formed. Compared with static gas supply, the peeling rate of essential oil inside the raw material is improved. The compound motion drives the raw materials, extraction medium and CO2 bubbles to form a high-speed relative motion, which forms a gas, liquid and solid three-phase multi-field coupling with the ultrasonic field of the ring ultrasonic emitting device 24 and the shear field of the spiral stirring blade 22. The CO2 bubbles are continuously stretched and compressed in the ultrasonic field with the compound motion. The local high temperature, high pressure and micro-jet generated when they burst, combined with the osmotic pressure of the CO2 bubbles themselves, doubly destroy the cellulose structure of the agarwood cell wall and accelerate the release of essential oil from the cells. Meanwhile, the uniformity of bubble bursting is significantly improved under dynamic conditions, avoiding the oxidation of essential oil components caused by excessive local cavitation during static gas supply. When CO2 bubbles carry essential oil molecules into the extraction medium, they form micro-convection vortices under the influence of compound motion. Combined with the shearing action of two counter-rotating spiral blades 22, the laminar flow state of the extraction medium is broken. After CO2 is continuously pumped into the sealed distillation vessel 2, under the action of compound motion, CO2 bubbles are evenly dispersed throughout the reaction system, forming a dynamic micro-high pressure environment, rather than the local high pressure of traditional high-pressure distillation. The inert nature of CO2 can isolate oxygen and prevent the essential oil from oxidizing and deteriorating. At the same time, the micro-high pressure environment can lower the boiling point of active ingredients such as terpenes and phenols in agarwood essential oil. Combined with the precise temperature control of the electric heating jacket 33, low-temperature distillation is achieved, which reduces the decomposition of active ingredients caused by high temperature and increases the distillation rate. The specific steps for using this invention are as follows: The central control unit 32 on the base frame 1 uses temperature and pressure probes to feed back data and precisely control the heating power of the electric heating jacket 33 on the outer periphery of the distillation vessel 2 to maintain a stable distillation environment. The raw material enters the extraction screen 11 and reflux screen 12, which are connected to the injection swirl tube 8, through the feed pipe 31. The motor 3 drives the vibrating frame 5 to perform 20mm, 30mm, and 40mm cyclic amplitude vibration along the axis of the distillation vessel 2 through the drive mechanism. On the other hand, it drives the injection swirl tube 8 to swing ±135°. At the same time, the precipitation shaft 14, lifting shaft 15, stirring shaft 16, and condensing shaft 25 operate synchronously through gear transmission. The crushing blade 18 and stirring rod 19 on the precipitation shaft 14 cooperate with vibration and revolution and rotation to crush the loose raw material. The pumping system continuously pumps CO2 into the raw material through the nozzle 20. The CO2 bubbles precisely penetrate and peel off the essential oil in the three-dimensional dynamic dispersion state of the raw material. The annular ultrasonic emission device 24 generates a 360° uniform ultrasonic field, which works in conjunction with the cavitation effect of the CO2 bubbles to destroy the cell wall. Two counter-rotating spiral stirring blades 22 and spiral lifting blades 21 realize efficient turning and circulation of the raw material, ensuring full contact between the raw material and the extraction medium. The essential oil vapor generated by distillation enters the condenser coil 27 of the condenser shaft 25 through the condenser conduit 26. The rotation of the condenser shaft 25 drives the turbulence blades 28 to enhance heat exchange. After the vapor is rapidly condensed, it is discharged through the extraction tube 29. The CO2 separation tube separates the CO2 gas. The sealing top plate 52 ensures the dynamic sealing of the distillation kettle 2. The slag discharge valve 34 can discharge the residue in time, ultimately achieving efficient and high-purity extraction of agarwood essential oil.

[0027] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A distillation extraction device for linaloe essential oil, comprising a base frame (1) on which a distillation kettle (2), a motor (3) and a condenser tank (4) are fixed, characterized in that, The device further comprises a vibrating frame (5) connected to the distillation kettle (2) through sliding, and a reset spring (57) arranged between the two; the vibrating frame (5) is rotatably connected with a rotating plate (6) and a hollow tooth sleeve (7) driven by a motor (3); the hollow tooth sleeve (7) is rotatably connected with a material injection rotating pipe (8); the material injection rotating pipe (8) is fixedly connected with the rotating plate (6); the hollow tooth sleeve (7) is fixedly provided with a lower gear ring (9); the output shaft of the motor (3) is provided with a driving mechanism; the driving mechanism drives the vibrating frame (5) to cyclically vibrate in the axial direction of the distillation kettle (2) and drives the material injection rotating pipe (8) to swing within ±135°; the bottom end of the material injection rotating pipe (8) is communicated with a slant pipe (10); the two ends of the slant pipe (10) are respectively communicated with an extraction mesh cylinder (11) and a reflux mesh cylinder (12); the extraction mesh cylinder (11) and the reflux mesh cylinder (12) are communicated with a branch pipe (13); the rotating plate (6) is rotatably connected with a separation shaft (14), a lifting shaft (15) and two stirring shafts (16); the separation shaft (14), the lifting shaft (15) and the stirring shafts (16) are all provided with lower gears (17) engaged with the lower gear ring (9); the separation shaft (14) is alternately provided with a crushing knife (18) and a stirring rod (19); the separation shaft (14) is arrayed with spray holes (20); the lifting shaft (15) is provided with a spiral lifting blade (21); the two stirring shafts (16) are both provided with spiral stirring blades (22); the bottom end of the reflux mesh cylinder (12) is communicated with a discharging pipe (23); the discharging pipe (23) and the slant pipe (10) are provided with an annular ultrasonic emission device (24). The device further comprises a condensing shaft (25) rotatably connected to the vibrating frame (5); the distillation kettle (2) and the condensing tank (4) are communicated with a condensing pipe (26); the condensing shaft (25) is communicated with a condensing coil pipe (27) communicated with the condensing pipe (26); and the condensing shaft (25) is arrayed with turbulence vanes (28). The distillation kettle (2) is fixedly provided with a pump gas system for pumping CO2 into the spray holes (20).

2. A device for distillative extraction of linaloe oil according to claim 1, characterized in that The top of the base frame (1) is provided with a feeding pipe (31) communicated with the material injection rotating pipe (8); the feeding pipe (31) is provided with a valve body; the end surface of the base frame (1) is provided with a central control unit (32); the outer periphery of the distillation kettle (2) is provided with an electric heating jacket (33); the distillation kettle (2) is provided with a temperature probe and a pressure probe; the data ends of the temperature probe and the pressure probe are both connected with the central control unit (32); the right bottom of the distillation kettle (2) is provided with a slag discharge valve (34) communicated with the discharging pipe (23); the upper part of the distillation kettle (2) is communicated with an extraction medium injection pipe (35); the spiral directions of the two spiral stirring blades (22) are opposite.

3. A device for distillative extraction of linaloe oil according to claim 2, characterized in that The driving mechanism comprises a main shaft (36), a secondary shaft (37) and a driving wheel (38) which are rotationally connected to the vibration frame (5), a first transmission belt is drivingly connected to the output shaft of the motor (3), the first transmission belt is drivingly connected to the main shaft (36), an upper gear ring (39) is rotationally arranged on the feeding pipe (31), an upper gear (40) is arranged on the main shaft (36) and the secondary shaft (37), the two upper gears (40) are drivingly connected to the upper gear ring (39), a bevel gear is arranged on the secondary shaft (37) and the driving wheel (38), the two bevel gears are orthogonally engaged, the driving wheel (38) is arrayed with three protruding portions (41) in the circumferential direction, a driven roller (42) is rotationally connected to the vibration frame (5), the three protruding portions (41) are alternately connected to the driven roller (42) and the driving strokes of the three protruding portions (41) to the driven roller (42) are different, a hollow shaft (43) is rotationally connected to the vibration frame (5), the hollow shaft (43) is connected to the main shaft (36), a half-tooth gear (44) and an intermediate gear (45) are arranged on the hollow shaft (43), a reciprocating gear ring (46) which is drivingly connected to the half-tooth gear (44) is arranged on the injection coil (8), a torsion spring (47) is arranged between the injection coil (8) and the vibration frame (5), a passive gear ring (48) which is drivingly connected to the intermediate gear (45) is arranged on the hollow gear sleeve (7), and a second transmission belt is drivingly connected between the hollow shaft (43) and the condensing shaft (25).

4. A device for distillative extraction of linaloe oil according to claim 3, characterized in that A hollow guide groove which is open at the top end and is slidingly connected to the main shaft (36) is arranged on the hollow shaft (43), and the cross sections of the hollow guide groove and the main shaft (36) are regular hexagons.

5. A device for distillative extraction of linaloe oil according to claim 3, wherein In the clockwise direction, the driving strokes of the three protruding portions (41) to the driven roller (42) are 20mm, 30mm and 40mm respectively.

6. A device for distillative extraction of linaloe oil according to claim 1, characterized in that The condensing shaft (25) is internally provided with an upper flow channel (49) and a lower flow channel (50), the condensing shaft (25) is provided with two sealing portions which are attached to the condensing tank (4), the two sealing portions are arrayed with through holes (51) respectively, the two groups of through holes (51) are communicated with the upper flow channel (49) and the lower flow channel (50) respectively, the through holes (51) on the upper sealing portion are communicated with the condensing pipe (26), the through holes (51) on the lower sealing portion are communicated with the extraction pipe (29), the two ends of the condensing coil (27) are communicated with the upper flow channel (49) and the lower flow channel (50) respectively, the bottom of the condensing tank (4) is provided with the extraction pipe (29) which is communicated with the condensing coil (27), and the extraction pipe (29) is communicated with the CO2 separation pipe (30).

7. A device for distillative extraction of linaloe oil according to claim 1, characterized in that Also included is a sealing top plate (52) slidably connected to the top of the distillation kettle (2), the injection coil (8), the extraction mesh cylinder (11) and the reflux mesh cylinder (12) are fixedly connected to the sealing top plate (52), a sealing ring connected to the distillation kettle (2) is mounted on the outer periphery of the sealing top plate (52), the extraction mesh cylinder (11), the reflux mesh cylinder (12) and the lower part of the discharging pipe (23) are each provided with an array of mesh holes, the axis of the mesh holes is perpendicular to the axis of the distillation kettle (2).

8. A device for distillative extraction of linaloe oil according to claim 1, characterized in that The pump gas system includes a gas distribution disc (53) mounted on the reflux mesh cylinder (12), an inner gas cavity is formed in the gas distribution disc (53), the inner gas cavity is in communication with a pump gas pipe (54), the pump gas pipe (54) is fixedly connected to the branch pipe (13), a gas channel is formed in the discharging pipe (23), each of the spray holes (20) is in communication with the gas channel, the pump gas pipe (54) is in communication with the gas channel, a sealing rubber head connected to the gas channel is mounted at the top end of the pump gas pipe (54), a gas supply ring pipe (55) is rotatably connected to the inner gas cavity, a CO2 pump pipe (56) is fixedly mounted on the distillation kettle (2), a metal bellow is in communication between the CO2 pump pipe (56) and the gas supply ring pipe (55).

9. A device for distillative extraction of linaloe oil according to claim 1, characterized in that The annular ultrasonic emission device (24) is arranged between the extraction mesh cylinder (11) and the reflux mesh cylinder (12), the annular ultrasonic emission device (24) includes an ultrasonic emission cylinder, the ultrasonic emission cylinder is an annular hollow structure, the axis of the ultrasonic emission cylinder is collinear with the axis of the distillation kettle (2), the inner wall and the outer wall of the ultrasonic emission cylinder are both arc-shaped ultrasonic emission surfaces, the inner wall and the outer wall are both provided with an anti-skid wear-resistant coating, and the cylinder wall of the ultrasonic emission cylinder is uniformly embedded with ultrasonic transducers.

10. A device for distillative extraction of linaloe oil according to claim 1, characterized in that The condensing tank (4) is in communication with a cooling water inlet pipe and a cooling water outlet pipe respectively.

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