A natural spice essential oil fractionating extraction device

Abstract

The application discloses a natural spice essential oil grading extraction device, which comprises an extraction tank assembly, a first-stage material distribution arm assembly, a second-stage material distribution arm assembly, an overload prevention driving assembly, a sealed cover and an oil guide arm assembly. The first-stage material distribution arm assembly divides the space in the tank into a plurality of first-stage extraction spaces, and the second-stage material distribution arm assembly divides the first-stage extraction spaces into a plurality of second-stage extraction spaces again, so that small-volume subdivided spaces are formed, the consistency of crystallization and melting is improved, the overload prevention driving assembly drives the second-stage material distribution arm assembly to reciprocate and stir the material to remove crystal bridging, and the elastic meshing structure is automatically disengaged when overload occurs, so that the motor is prevented from burning, and the oil guide arm assembly uniformly distributes the essential oil to the extraction spaces through a spiral oil distribution pipe and an oil distribution groove. The device integrates freezing, melting and grading extraction, realizes uniform oil distribution, prevents bridging and overload driving, and the second-stage extraction spaces can be selectively constructed.

Description

Technical Field

[0001] This application belongs to the field of bio-extraction technology, specifically relating to a graded extraction device for natural fragrance essential oils. Background Technology

[0002] In the graded extraction process of natural fragrance essential oils, the essential oils are usually placed in a freezer for crystallization. The uncrystallized liquid is then drained, and the remaining crystals are poured into a melting tank and placed in a drying room for heating and melting to obtain purified essential oils. However, existing technologies have the following problems:

[0003] Existing processes rely heavily on manual labor, with cumbersome and complex procedures, resulting in high labor costs and increased production costs.

[0004] Traditional extraction tanks are typically large-volume cavities where materials are loaded and frozen as a whole. Due to the different heat exchange conditions in the central area, near the tank wall, and at the bottom of the tank, asynchronous crystallization and melting are likely to occur, resulting in unstable oil content in the discharged oil. Oil at different melting temperatures and intermediate oil are mixed together, affecting the purity and stability of the fractional extraction.

[0005] During the freezing crystallization and subsequent heating and melting process, the crystals are prone to bridging, resulting in large fluctuations in the discharge concentration and further reducing the extraction effect.

[0006] The existing equipment lacks an effective overload protection mechanism. When the drive components are frozen in a freezing environment, forcibly driving the equipment can easily cause the motor to burn out, affecting the reliability and safety of the equipment operation.

[0007] When essential oils are added to the extraction tank, the lack of a uniform material guiding structure can easily lead to uneven distribution of oils in each extraction space, affecting the consistency of graded extraction.

[0008] Therefore, developing a natural fragrance essential oil graded extraction device that can achieve uniform oil distribution, prevent crystal bridging, prevent overload drive, and improve graded extraction efficiency and consistency is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0009] To address the problems mentioned in the background technology, a graded extraction process is formed by implementing primary and secondary material separation within the extraction tank, implementing overload and anti-crystallization bridging control for the secondary material distribution arm assembly, and implementing spiral uniform oil distribution for natural fragrance essential oils. This process involves the coordinated construction of a graded extraction space, crystal bridging removal, and drive overload protection, thereby improving the efficiency and consistency of graded extraction while ensuring the safety and reliability of equipment operation.

[0010] To achieve the above objectives, this application provides the following technical solution: a natural fragrance essential oil grading extraction device, including an extraction tank assembly, and further comprising:

[0011] A primary material distribution arm assembly is fixedly installed inside the extraction tank assembly, and the primary material distribution arm assembly divides the extraction space inside the extraction tank assembly into multiple primary extraction spaces.

[0012] A secondary material distribution arm assembly is disposed within the primary extraction space, and the secondary material distribution arm assembly further divides the primary extraction space into multiple secondary extraction spaces.

[0013] An overload protection drive assembly is provided below the secondary material distribution arm assembly. The overload protection drive assembly drives the secondary material distribution arm assembly to perform reciprocating telescopic pushing motion within the primary extraction space. When the movement of the secondary material distribution arm assembly is obstructed, the power transmission path is disconnected.

[0014] A sealing cap is fastened to the top of the extraction tank assembly and is used to seal the top of the extraction tank assembly.

[0015] An oil guiding arm assembly is installed on a sealed cover. The oil guiding arm assembly guides external natural fragrance essential oils into multiple secondary extraction spaces within multiple primary extraction spaces. It forms a multi-level subdivided extraction space inside the extraction tank, has crystal bridging and removal and drive overload protection functions, and achieves a compact structural basis for uniform distribution of essential oils and selective construction of secondary extraction spaces.

[0016] Preferably, the extraction tank assembly includes a cylindrical tank with a conical tank fixedly installed at its bottom. Multiple support plates are fixedly installed on the inner wall of the bottom of the cylindrical tank. Support legs and an oil outlet pipe are fixedly installed at the bottom of the conical tank. The cylindrical tank has a hollow structure, and pipes for the flow of cold and hot air are installed inside the hollow structure. This integrated freezing and melting environment within a single tank provides a unified processing space for the graded crystallization and graded melting extraction of natural fragrance essential oils.

[0017] Preferably, the primary dispensing arm assembly includes a dispensing plate fixed to the bottom of the inside of the cylindrical tank. A central arm column is fixedly installed at the top center of the dispensing plate, and multiple dispensing plates are fixedly installed on the central arm column. The edge of the dispensing plate is provided with guide rail grooves and a lower oil pipe. A drive motor is fixedly installed at the center of the bottom of the dispensing plate, and a drive gear is installed on the output shaft of the drive motor. A ring cover and reinforcing ribs are fixedly installed on the edge of the bottom of the dispensing plate. A valve is installed on the lower oil pipe. The dispensing plates are hollow structures, and pipes for the flow of cold and hot air are installed inside the hollow structure of the dispensing plates. The multiple dispensing plates divide the overall space inside the cylindrical tank into multiple primary extraction spaces, while providing guiding support for the sliding of the secondary dispensing plates and providing temperature regulation channels for the freezing and thawing processes.

[0018] Preferably, the secondary dispensing arm assembly includes a secondary dispensing cylinder fixed to the top edge of the dispensing tray. A conical apex tube is fixedly installed at the top of the secondary dispensing cylinder, and multiple secondary dispensing plates are slidably installed on the side of the secondary dispensing cylinder via side sliding grooves. Moving wheels are fixedly installed on both sides of each secondary dispensing plate. An inner support platform is fixedly installed on the inner wall of the secondary dispensing cylinder, and the moving wheels travel on the inner support platform. A drive bottom arm is fixedly installed at the bottom of each secondary dispensing plate, and the drive bottom arm is inserted into a guide rail groove. When the bottom of the secondary dispensing cylinder is fixed to the top of the dispensing tray, the bottom of the secondary dispensing cylinder covers the outside of the guide rail groove. A retractable secondary partition structure is formed within the primary extraction space. By synchronously extending the secondary dispensing plates, the primary extraction space is further divided into multiple secondary extraction spaces, thereby shortening the freezing and melting paths within each subdivided space.

[0019] Preferably, the overload protection drive assembly includes a top shaft rod rotatably mounted on the bottom end of the distribution plate and a splined shaft rod rotatably mounted on the support plate. A drive top wheel and a fixed meshing gear ring are fixedly mounted on the top shaft rod. The drive top wheel has a top wheel arc groove. The fixed meshing gear ring is located below the drive top wheel. A push base and an auxiliary gear are fixedly mounted at the bottom of the splined shaft rod. A push spring and a movable meshing gear ring are sleeved on the top of the splined shaft rod. The movable meshing gear ring has a splined inner groove in the center that matches the splined shaft rod. The drive motor transmits power to the secondary distribution plate and drives it to reciprocate and extend to compact the material. At the same time, in case of overload, the power is cut off through elastic disengagement to prevent the motor from burning out.

[0020] Preferably, the oil guiding arm assembly includes an oil guiding main chamber fixed to the top of the sealed cover, an oil guiding main pipe is provided on one side of the oil guiding main chamber, and multiple oil guiding branch pipes are fixedly provided at the bottom of the oil guiding main chamber. A spiral oil distribution pipe is fixedly provided at the bottom of the oil guiding branch pipe, and multiple oil distribution grooves are opened on the bottom end surface of the spiral oil distribution pipe; the external natural fragrance essential oil is evenly distributed to each primary extraction space and secondary extraction space, improving the consistency of oil distribution in each subdivided space.

[0021] Preferably, multiple distribution plates on the central arm column are fixed to the inner wall of the cylindrical tank. The overall space inside the cylindrical tank is divided into multiple primary extraction spaces by the multiple distribution plates. The primary extraction spaces are further divided into multiple secondary extraction spaces by the synchronous outward extension of the multiple secondary distribution plates on the secondary distribution cylinder. The large-volume tank is divided into multiple small-volume freezing subdivision spaces by the two-level division method, which improves the consistency and synchronicity of freezing crystallization and heating melting.

[0022] Preferably, the overload protection drive assembly is located below the distribution plate and inside the ring cover. The bottom of the drive arm is inserted into the top wheel arc groove. The drive top wheel drives multiple secondary distribution plates to extend and slide synchronously on the secondary distribution cylinder through the top wheel arc groove and the drive arm. The reciprocating rotation of the drive top wheel is converted into the synchronous extension and retraction of multiple secondary distribution plates, realizing the mechanical cleaning and reciprocating pushing of the crystal bridge.

[0023] Preferably, the spline shaft is located below the top shaft, and the movable meshing gear ring slides on the spline shaft through the spline inner groove. The top and bottom of the push spring abut against the movable meshing gear ring and the push base respectively. The teeth of the movable meshing gear ring and the teeth of the fixed meshing gear ring are aligned. Through the push of the push spring against the movable meshing gear ring, an elastic abutment meshing structure is formed between the movable meshing gear ring and the fixed meshing gear ring. The auxiliary gear meshes with the drive gear. The drive force is transmitted during the normal extension and retraction of the secondary distribution plate, and when the secondary distribution plate is frozen and overloaded, the movable meshing gear ring overcomes the spring force and disengages from the fixed meshing gear ring, thus achieving automatic protection.

[0024] Preferably, the number of spiral oil distribution pipes corresponds one-to-one with the number of multiple primary extraction spaces inside the cylindrical tank. When the sealing cover is fastened to the top of the extraction tank assembly, the spiral oil distribution pipes are positioned directly above the primary extraction spaces. An independent spiral oil distribution pipe is provided above each primary extraction space. The spiral structure and bottom oil distribution groove achieve uniform oil distribution at 360 degrees, avoiding the problem of uneven distribution where more oil comes out at the front end and less at the rear end of the annular oil distribution pipe.

[0025] Compared with the prior art, the beneficial effects of this application are:

[0026] 1. Improve the efficiency and consistency of graded extraction: The primary material distribution arm component divides the overall space inside the extraction tank into multiple primary extraction spaces, and the secondary material distribution arm component further divides the primary extraction space into multiple secondary extraction spaces, forming multiple small-volume freezing subdivision spaces. This effectively shortens the freezing and melting paths of materials in each space, improves the consistency and synchronicity of freezing crystallization and heating melting, and avoids the problem of asynchronous crystallization and melting caused by differences in heat exchange conditions, thereby improving the purity and stability of graded extraction of natural fragrance essential oils.

[0027] 2. Prevention of crystal bridging and drive overload: The anti-overload drive assembly drives the secondary distribution arm assembly to perform reciprocating extension and retraction tamping action within the primary extraction space, effectively cleaning bridging crystals on the outer wall of the secondary distribution plate and breaking the crystal bridging phenomenon inside the material, ensuring stable discharge concentration. At the same time, the anti-overload drive assembly adopts an elastic contact meshing structure. When the secondary distribution plate is frozen and cannot move in a freezing environment, the movable meshing toothed ring can overcome the spring force and disengage from the fixed meshing toothed ring, preventing the drive motor from burning out due to overload, thus improving the safety and reliability of equipment operation.

[0028] 3. Achieving uniform oil distribution and spatial adaptability: Through the spiral oil distribution pipe in the oil guide arm assembly and multiple oil distribution grooves at its bottom, natural fragrance essential oils are evenly distributed to each primary and secondary extraction space, improving the consistency of oil distribution in each subdivided space and further enhancing the consistency of graded extraction; at the same time, the secondary distribution plate is retractable, which can be extended to form a secondary extraction space when needed, and can be retracted into the secondary distribution cylinder when not needed, retaining only the primary extraction space, enhancing the applicability of the device to different process requirements. Attached Figure Description

[0029] Figure 1 This is a cross-sectional view of this application;

[0030] Figure 2 This is a perspective view of the present application;

[0031] Figure 3 This is a perspective view of the extraction tank assembly, the primary feed arm assembly, and the secondary feed arm assembly of this application;

[0032] Figure 4 This is a cross-sectional view of the extraction tank assembly and the primary feed arm assembly of this application;

[0033] Figure 5 This is a perspective view of the primary feed arm assembly of this application;

[0034] Figure 6 This is a perspective view of the primary feeder arm assembly of this application from another angle;

[0035] Figure 7 This is a perspective view of the secondary material distribution arm assembly and the overload protection drive assembly of this application;

[0036] Figure 8 This is an exploded view of the overload protection drive assembly of this application;

[0037] Figure 9 This is a perspective view of the secondary material distribution arm assembly and the overload protection drive assembly of this application from another angle.

[0038] Figure 10This is a perspective view of the extraction tank assembly and the primary feed arm assembly of this application;

[0039] Figure 11 This is a perspective view of the oil guide arm assembly of this application.

[0040] Explanation of reference numerals in the attached drawings: 100, Extraction tank assembly; 101, Straight tank; 102, Support plate; 103, Conical tank; 104, Support leg; 105, Oil outlet pipe; 200, Primary distribution arm assembly; 201, Distribution plate; 202, Lower oil pipe; 203, Valve; 204, Distribution plate; 205, Guide rail groove; 206, Central arm column; 207, Drive motor; 208, Drive gear; 209, Reinforcing rib; 210, Ring cover; 300, Secondary distribution arm assembly; 301, Secondary distribution cylinder; 302, Conical top pipe; 303, Secondary distribution plate; 304, Inner... Support platform; 305, moving caster; 306, side sliding groove; 307, drive bottom arm; 400, anti-overload drive assembly; 401, top shaft rod; 402, drive top wheel; 403, top wheel arc groove; 404, fixed meshing gear ring; 405, spline inner groove; 406, movable meshing gear ring; 407, push spring; 408, spline shaft rod; 409, push base platform; 410, auxiliary gear; 500, sealing cover; 600, oil guide arm assembly; 601, main oil guide compartment; 602, main oil guide pipe; 603, branch oil guide pipe; 604, spiral oil distribution pipe; 605, oil distribution groove. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] Please see Figures 1-11 As shown, this application provides a natural fragrance essential oil grading extraction device, including an extraction tank assembly 100, and further comprising:

[0043] The primary material distribution arm assembly 200 is fixedly installed inside the extraction tank assembly 100, and the primary material distribution arm assembly 200 divides the extraction space inside the extraction tank assembly 100 into multiple primary extraction spaces.

[0044] The secondary material distribution arm assembly 300 is set within the primary extraction space, and the secondary material distribution arm assembly 300 further divides the primary extraction space into multiple secondary extraction spaces.

[0045] Overload protection drive assembly 400 is located below the secondary material distribution arm assembly 300. The overload protection drive assembly 400 drives the secondary material distribution arm assembly 300 to perform reciprocating telescopic pushing action in the primary extraction space, and disconnects the power transmission path when the movement of the secondary material distribution arm assembly 300 is obstructed.

[0046] A sealing cover 500 is fastened to the top of the extraction tank assembly 100 and is used to seal the top of the extraction tank assembly 100.

[0047] The oil guiding arm assembly 600 is installed on the sealed cover 500. The oil guiding arm assembly 600 guides the external natural fragrance essential oils into multiple secondary extraction spaces within multiple primary extraction spaces.

[0048] In a preferred embodiment, please refer to Figure 4 The extraction tank assembly 100 includes a cylindrical tank 101, a conical tank 103 fixedly installed at the bottom of the cylindrical tank 101, and multiple support plates 102 fixedly installed on the inner wall of the bottom of the cylindrical tank 101. The bottom of the conical tank 103 is fixedly installed with support legs 104 and an oil outlet pipe 105. The cylindrical tank 101 is configured as a hollow structure, and the hollow structure of the cylindrical tank 101 is provided with pipes for the circulation of cold and hot air.

[0049] In a preferred embodiment, please refer to Figure 5 and Figure 6 The primary material distribution arm assembly 200 includes a material distribution plate 201 fixed to the bottom of the inner side of the cylindrical tank 101. A central arm column 206 is fixedly installed at the center of the top of the material distribution plate 201. Multiple material distribution plates 204 are fixedly installed on the central arm column 206. The inner end of each material distribution plate 204 is fixed to the central arm column 206, the outer end is connected to the inner wall of the cylindrical tank 101, and the bottom end is connected to or close to the top surface of the material distribution plate 201. The edge of the material distribution plate 201 is provided with a guide rail groove 205 and a lower oil pipe 202. The center of the bottom of the material distribution plate 201 is fixed. A drive motor 207 is fixedly installed, and a drive gear 208 is installed on the output shaft of the drive motor 207. A ring cover 210 and a reinforcing rib plate 209 are fixedly installed on the bottom edge of the distribution plate 201. A valve 203 is installed on the lower oil pipe 202. The distribution plate 204 is designed as a hollow structure, and the hollow structure of the distribution plate 204 is provided with pipes for the flow of cold and hot air. The primary extraction space is further divided into multiple secondary extraction spaces by the synchronous outward expansion of multiple secondary distribution plates 303 on the secondary distribution cylinder 301.

[0050] In a preferred embodiment, please refer to Figure 7The secondary material distribution arm assembly 300 includes a secondary material distribution cylinder 301 fixed to the top edge of the material distribution plate 201. A conical apex tube 302 is fixedly installed on the top of the secondary material distribution cylinder 301, and multiple secondary material distribution plates 303 are slidably arranged on the side of the secondary material distribution cylinder 301 through side sliding grooves 306. Moving wheels 305 are fixedly installed on both sides of each secondary material distribution plate 303. An inner support platform 304 is fixedly installed on the inner wall of the secondary material distribution cylinder 301, and the moving wheels 305 travel on the inner support platform 304. A drive bottom arm 307 is fixedly installed at the bottom of the secondary material distribution plate 303, and the drive bottom arm 307 is inserted into a guide rail. Inside the trough 205, when the bottom of the secondary distribution cylinder 301 is fixed to the top of the distribution plate 201, the bottom of the secondary distribution cylinder 301 is covered outside the guide rail slide 205. Multiple distribution plates 204 on the central arm column 206 are fixed to the inner wall of the cylindrical tank 101. The multiple distribution plates 204 divide the overall space inside the cylindrical tank 101 into multiple primary extraction spaces. The bottom of the drive arm 307 is inserted into the top wheel arc groove 403. The drive top wheel 402 drives the multiple secondary distribution plates 303 to extend and slide synchronously on the secondary distribution cylinder 301 through the top wheel arc groove 403 and the drive arm 307.

[0051] In a preferred embodiment, please refer to Figure 8 The overload protection drive assembly 400 includes a top shaft 401 rotatably mounted on the bottom end of the distribution plate 201 and a spline shaft 408 rotatably mounted on the support plate 102. A drive top wheel 402 and a fixed meshing gear ring 404 are fixedly mounted on the top shaft 401. The drive top wheel 402 has a top wheel arc groove 403. The fixed meshing gear ring 404 is located below the drive top wheel 402. A push base 409 and an auxiliary gear 410 are fixedly mounted at the bottom of the spline shaft 408. A push spring 407 and a movable meshing gear ring 406 are sleeved on the top of the spline shaft 408. The movable meshing gear ring 406 has a spline inner groove 405 that matches the spline shaft 408 at its center. The component 400 is located below the material distribution plate 201, and the overload protection drive assembly 400 is located inside the ring cover 210. The spline shaft 408 is located below the top shaft 401. The movable meshing gear ring 406 slides on the spline shaft 408 through the spline inner groove 405. The top and bottom of the push spring 407 abut against the movable meshing gear ring 406 and the push base 409, respectively. The teeth of the movable meshing gear ring 406 and the teeth of the fixed meshing gear ring 404 are aligned. Through the push of the push spring 407 on the movable meshing gear ring 406, an elastic abutment meshing structure is formed between the movable meshing gear ring 406 and the fixed meshing gear ring 404. The auxiliary gear 410 meshes with the drive gear 208.

[0052] In a preferred embodiment, please refer to Figure 11The oil guiding arm assembly 600 includes an oil guiding main chamber 601 fixed to the top of the sealed cover 500. An oil guiding main pipe 602 is provided on one side of the oil guiding main chamber 601, and multiple oil guiding branch pipes 603 are fixedly provided at the bottom of the oil guiding main chamber 601. A spiral oil distribution pipe 604 is fixedly provided at the bottom of the oil guiding branch pipe 603. Multiple oil distribution grooves 605 are opened on the bottom end surface of the spiral oil distribution pipe 604. The number of spiral oil distribution pipes 604 corresponds one-to-one with the number of multiple primary extraction spaces in the straight cylinder tank 101. When the sealed cover 500 is fastened to the top of the extraction tank assembly 100, the spiral oil distribution pipe 604 is positioned directly above the primary extraction space. The multiple oil distribution grooves 605 are spaced apart along the extension direction of the spiral oil distribution pipe 604, and the groove openings of the multiple oil distribution grooves 605 face the different secondary extraction areas in the corresponding primary extraction space.

[0053] The working principle of this application is as follows: In existing methods of graded extraction of natural fragrance essential oils, the essential oils are placed in a freezer for crystallization. The uncrystallized liquid is then discharged, and the remaining crystals are poured into a melting tank and then placed in a drying room to melt and obtain purified natural fragrance essential oils. Existing technologies rely heavily on manual labor, resulting in high labor costs and complex processes that increase production costs. To address these issues, this application provides an extraction tank assembly 100. In actual use, the extraction tank assembly 100 includes a cylindrical tank 101 with a hollow structure. The hollow structure of the cylindrical tank 101 contains pipes for the circulation of cold and hot air. During graded extraction of natural fragrance essential oils, the above structure creates a freezing and melting environment within the cylindrical tank 101, achieving the graded extraction of the natural fragrance essential oils. The extraction process involves adding natural fragrance essential oils into a cylindrical tank 101. External refrigeration equipment supplies cold air into the tank's internal cooling pipes, creating a freezing environment. When the natural fragrance essential oils crystallize, the valve 203 at the bottom of the primary distribution arm assembly 200 is opened, allowing the uncrystallized oil to drain through the oil drain pipe 202 and oil outlet pipe 105. After draining, the cold air pipes are closed, and external heating equipment supplies hot air into the tank's internal hot air pipes, creating a heating and melting environment. During this heating and melting process, the different melting temperatures of the components in the natural fragrance essential oils are utilized to achieve graded extraction. This structure overcomes the traditional, multi-step, and cumbersome processing methods.

[0054] Through the above structural configuration, this application realizes the integrated processing of freezing, draining and melting. The straight cylinder 101 of the extraction tank assembly 100 has a hollow structure and built-in cold and hot air pipes. The freezing environment is formed by refrigeration to crystallize the essential oil, and the uncrystallized liquid is discharged through the oil drain pipe 202 and the oil outlet pipe 105. Then, the heating environment is formed by heating to achieve graded melting and extraction, which overcomes the problems of traditional multi-process reliance on manual labor and high cost, and improves the degree of automation and production efficiency.

[0055] Based on the above, during the actual graded extraction of natural fragrance essential oils, a prominent problem easily arises during freeze crystallization. The cylindrical tank 101 is typically a large-volume cavity; the material is loaded into the tank all at once and frozen as a whole. Due to differences in heat exchange conditions in the central area, near the tank wall, and near the bottom, asynchronous crystallization and melting occur, resulting in unstable oil content in the discharged liquid. This asynchrony leads to some areas melting into liquid while others remain crystals during graded discharge, easily causing oils at different melting temperatures and intermediate oils to be mixed. To solve this problem, a primary distribution arm assembly 200 is installed within the extraction tank assembly 100. In actual use… At the same time, multiple distribution plates 204 on the central arm column 206 are fixed on the inner wall of the straight tank 101. The overall space inside the straight tank 101 is divided into multiple primary extraction spaces by the multiple distribution plates 204. At the same time, a secondary distribution arm assembly 300 is set in the primary extraction space. The primary extraction space is further divided into multiple secondary extraction spaces by the synchronous outward extension of multiple secondary distribution plates 303 on the secondary distribution cylinder 301. In this way, the space inside the straight tank 101 is divided into two levels, and the interior of the straight tank 101 is designed into multiple small-volume freezing subdivision spaces, so that the material thickness, freezing path and melting path in each small space are shorter, thereby improving the consistency of freezing and melting.

[0056] Through the above structural configuration, this application achieves two-stage spatial division of a large-volume cavity. The distribution plate 204 on the central arm column 206 divides the straight cylinder 101 into multiple primary extraction spaces. The secondary distribution plate 303 extends outward on the secondary distribution cylinder 301 to further divide the primary extraction spaces into multiple secondary extraction spaces, forming small-volume subdivided spaces. This overcomes the problem of asynchronous crystallization and dissolution, and improves the purity and stability of graded extraction.

[0057] Based on the above, crystals tend to form crystal bridges during melting. During subsequent heating and melting, these bridging structures can cause large fluctuations in the discharge concentration. To address this issue, multiple secondary distribution plates 303 on the secondary distribution arm assembly 300 are slidably mounted on the secondary distribution cylinder 301. The secondary distribution plates 303 move on the inner support platform 304 via moving wheels 305 and slide within the side sliding groove 306. In actual use, the drive motor 207 drives the gear 208 and auxiliary... Gear 410 drives the drive top wheel 402 at the top of the anti-overload drive assembly 400 to reciprocate. The reciprocating drive top wheel 402 drives multiple secondary distribution plates 303 to reciprocate and slide on the secondary distribution cylinder 301 through the top wheel arc groove 403 and the drive bottom arm 307. Through this structure, on the one hand, the bridging crystals on the outer wall of the secondary distribution plate 303 are cleaned up, and on the other hand, the reciprocating motion of the secondary distribution plate 303 in the primary extraction space realizes the reciprocating pushing motion, reducing the phenomenon of crystal bridging.

[0058] Through the above structural configuration, this application realizes the mechanical cleaning of crystal bridging. The drive motor 207 drives the drive top wheel 402 to reciprocate through the drive gear 208 and the auxiliary gear 410. The drive top wheel 402 drives the secondary distribution plate 303 to reciprocate and slide on the secondary distribution cylinder 301 through the top wheel arc groove 403 and the drive bottom arm 307, cleaning the bridged crystals and destroying the bridging structure, overcoming the problem of large fluctuations in discharge concentration and improving the stability of discharge.

[0059] Multiple secondary distribution plates 303 are spaced apart circumferentially along the secondary distribution cylinder 301 and can extend or retract radially relative to the secondary distribution cylinder 301. When the secondary distribution plates 303 extend outward along the side sliding groove 306, the extended ends of the secondary distribution plates 303 move toward the adjacent distribution plates 204 or the inner wall of the straight cylinder 101, and the bottom ends of the secondary distribution plates 303 are close to the top surface of the distribution plate 201. Thus, multiple secondary extraction spaces are formed within a primary extraction space by the distribution plates 204, the secondary distribution plates 303, the distribution plate 201, and the inner wall of the straight cylinder 101. When the secondary distribution plates 303 retract inward to the secondary... When the material is inside the dispensing cylinder 301, the primary extraction space is no longer divided by the secondary dispensing plates 303. Based on the above, when multiple secondary dispensing plates 303 extend outwards to their positions on the secondary dispensing cylinder 301, they divide the primary extraction space into multiple secondary extraction spaces. When multiple secondary dispensing plates 303 retract inwards to their positions on the secondary dispensing cylinder 301, they retract into the secondary dispensing cylinder 301. At this time, no secondary extraction space is established in the straight cylinder 101, only the primary extraction space is established. In this way, the applicability of the straight cylinder 101 in actual use is increased.

[0060] Through the above structural configuration, this application realizes the selective construction of the secondary extraction space. When the secondary distribution plate 303 extends outward, it divides the primary extraction space into multiple secondary extraction spaces. When it retracts inward, it retains only the primary extraction space. It can be flexibly switched according to process requirements, overcoming the problem of poor applicability of traditional fixed structures and enhancing the compatibility of the device.

[0061] Based on the above, the secondary distribution plate 303 of this application is telescopically slidably mounted on the secondary distribution cylinder 301, and a freezing step is performed within the straight cylinder 101. In a freezing environment, the telescopic movement of the secondary distribution plate 303 is driven by the drive motor 207. If the secondary distribution plate 303 is frozen in a freezing environment, directly driving it with the drive motor 207 would directly cause the drive motor 207 to burn out. Therefore, ensuring that the secondary distribution plate 303 has telescopic movement in a freezing environment while also preventing the drive motor 207 from burning out is an urgent problem to be solved. To address the aforementioned issues, the overload protection drive assembly 400 of this application includes a top shaft 401 rotatably mounted on the bottom end of the distribution plate 201 and a spline shaft 408 rotatably mounted on the support plate 102. The spline shaft 408 is positioned below the top shaft 401. A movable meshing gear ring 406 slides on the spline shaft 408 via a spline inner groove 405. The teeth of the movable meshing gear ring 406 and the teeth of the fixed meshing gear ring 404 are aligned. A push spring 407 pushes the movable meshing gear ring 406, creating an elastic abutment meshing structure between the movable meshing gear ring 406 and the fixed meshing gear ring 404. In actual use, the drive motor 207 drives the spline shaft 408 to rotate via the drive gear 208 and the auxiliary gear 410. The spline shaft 408 drives the top shaft 401 to rotate via the movable meshing gear ring 406 and the fixed meshing gear ring 404. The drive top wheel 402 on the top shaft 401 drives the secondary distribution plate 303 to have a telescopic movement in the freezing environment via the top wheel arc groove 403 and the drive bottom arm 307. When the secondary distribution plate 303 is frozen, it cannot be driven. The secondary distribution plate 303 reverses and limits the drive top wheel 402, so that the drive top wheel... Since wheel 402 cannot rotate, in order to prevent the drive motor 207 from burning out, when the rotation of the drive top wheel 402 is restricted, the movable meshing gear ring 406 on the spline shaft 408 overcomes the pushing force of the push spring 407. At this time, the movable meshing gear ring 406 moves downward on the spline shaft 408, causing the movable meshing gear ring 406 and the fixed meshing gear ring 404 to disengage, so that the power of the spline shaft 408 is no longer transmitted to the top shaft 401 through the movable meshing gear ring 406 and the fixed meshing gear ring 404. In this way, the drive motor 207 can be prevented from burning out.

[0062] Through the above structural configuration, this application realizes overload protection in freezing environment. The drive motor 207 drives the spline shaft 408 to rotate through the drive gear 208 and the auxiliary gear 410. The top shaft 401 is driven to rotate through the elastic meshing structure of the movable meshing gear ring 406 and the fixed meshing gear ring 404. When the secondary material distribution plate 303 is frozen, the movable meshing gear ring 406 overcomes the disengagement of the push spring 407 and the fixed meshing gear ring 404, automatically cuts off the power, overcomes the risk of motor burnout, and improves the safety of low temperature operation.

[0063] Based on the above, the cylindrical tank 101 of this application is divided into multiple primary extraction spaces, which are further divided into multiple secondary extraction spaces. When natural fragrance essential oils are added from the top of the extraction tank assembly 100, the lack of a necessary material guiding structure leads to uneven oil distribution in the multiple secondary extraction spaces within the multiple primary extraction spaces. This also affects the consistency of the natural fragrance essential oils during graded extraction. To solve the above problems, the sealing cover 500 of this application is equipped with an oil guiding arm assembly 600. In actual use, the natural fragrance essential oils enter the main oil guiding chamber 601 through the main oil guiding pipe 602 and flow into multiple spiral oil distribution pipes 604 through multiple oil guiding branch pipes 603. The number of spiral oil distribution pipes 604 corresponds to the number of multiple primary extraction spaces within the cylindrical tank 101. Correspondingly, when the sealing cap 500 is fastened to the top of the extraction tank assembly 100, the spiral oil distribution pipe 604 is positioned directly above the primary extraction space. Since the spiral oil distribution pipe 604 is designed as a spiral structure and has an oil distribution groove 605 on its bottom surface, the natural fragrance essential oil in the oil guide branch pipe 603 is ensured to flow evenly to the primary and secondary extraction spaces through the multiple oil distribution grooves 605 on the spiral oil distribution pipe 604. It should also be noted that the spiral oil distribution pipe 604 is a spiral structure, and the spiral is 360 degrees. If the spiral oil distribution pipe 604 is designed as a ring structure, more material will flow out of the oil outlet at the front end of the ring and less material will flow out of the oil outlet at the rear end. The spiral oil distribution pipe 604 can solve the above problems.

[0064] Through the above structural configuration, this application achieves a 360-degree uniform distribution of essential oils. The main oil guide pipe 602 on the sealed cap 500 sends the essential oil into the main oil guide chamber 601, and then flows through the branch oil guide pipe 603 to the spiral oil distribution pipe 604. The spiral oil distribution pipe 604 has a 360-degree spiral structure and an oil distribution groove 605 on its bottom end face, which evenly distributes the essential oil to each extraction space, overcoming the problem of uneven distribution of the annular oil distribution pipe and ensuring that the amount of oil in each space is consistent.

[0065] It should be noted that, in order to ensure the range of material pushing influence of the secondary distribution plate 303 during its telescopic movement, an arc-shaped push plate can be provided at the front end of the secondary distribution plate 303; to ensure the airtightness between the secondary distribution plate 303 and the secondary distribution cylinder 301, a sealing gasket can be provided in the side sliding groove 306; to ensure the airtightness of the guide rail groove 205 during use, a rubber gasket can be provided in the guide rail groove 205; a cooling and heating channel can also be provided in the secondary distribution plate 303; an installation positioning groove can be provided between the sealing cover 500 and the extraction tank assembly 100 to ensure that the sealing cover 500 and the extraction tank assembly 100 are installed facing each other; obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0066] It should be noted that the hollow structure of the straight tank 101 is equipped with pipes for the circulation of cold and hot air. The pipe layout and the connection technology between the pipes and external equipment are existing known technologies, so they will not be described in detail.

[0067] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for graded extraction of natural fragrance essential oils, comprising an extraction tank assembly (100), characterized in that, Also includes: A primary material distribution arm assembly (200) is fixedly disposed inside the extraction tank assembly (100), and the primary material distribution arm assembly (200) divides the extraction space inside the extraction tank assembly (100) into multiple primary extraction spaces; A secondary material distribution arm assembly (300) is provided within the primary extraction space, and the secondary material distribution arm assembly (300) further divides the primary extraction space into multiple secondary extraction spaces; An overload protection drive assembly (400) is provided below the secondary material distribution arm assembly (300). The overload protection drive assembly (400) drives the secondary material distribution arm assembly (300) to perform reciprocating telescopic pushing action in the primary extraction space, and disconnects the power transmission path when the movement of the secondary material distribution arm assembly (300) is obstructed. A sealing cap (500) is fastened to the top of the extraction tank assembly (100) and is used to seal the top of the extraction tank assembly (100); An oil guide arm assembly (600) is provided on a sealed cover (500). The oil guide arm assembly (600) guides external natural fragrance essential oils into multiple secondary extraction spaces within multiple primary extraction spaces.

2. The natural fragrance essential oil grading and extraction device according to claim 1, characterized in that: The extraction tank assembly (100) includes a cylindrical tank (101), a conical tank (103) is fixedly installed at the bottom of the cylindrical tank (101), and multiple support plates (102) are fixedly installed on the inner wall of the bottom of the cylindrical tank (101). Support legs (104) and an oil outlet pipe (105) are fixedly installed at the bottom of the conical tank (103). The cylindrical tank (101) is configured as a hollow structure, and pipes for the circulation of cold and hot air are provided inside the hollow structure of the cylindrical tank (101).

3. The natural fragrance essential oil grading and extraction device according to claim 2, characterized in that: The first-stage material distribution arm assembly (200) includes a material distribution plate (201) fixed inside the bottom of the straight tank (101). A central arm column (206) is fixedly installed at the center of the top of the material distribution plate (201). Multiple material distribution plates (204) are fixedly installed on the central arm column (206). A guide rail groove (205) and a lower oil pipe (202) are opened on the edge of the material distribution plate (201). A drive motor (207) is fixedly installed at the center of the bottom of the material distribution plate (201). A drive gear (208) is installed on the output shaft of the drive motor (207). A ring cover (210) and a reinforcing rib plate (209) are fixedly installed on the edge of the bottom of the material distribution plate (201). A valve (203) is installed on the lower oil pipe (202). The material distribution plate (204) is set as a hollow structure. Pipes for the circulation of cold and hot air are installed inside the hollow structure of the material distribution plate (204).

4. The natural fragrance essential oil grading and extraction device according to claim 3, characterized in that: The secondary distribution arm assembly (300) includes a secondary distribution cylinder (301) fixed to the top edge of the distribution plate (201). A conical top tube (302) is fixedly provided on the top of the secondary distribution cylinder (301), and multiple secondary distribution plates (303) are slidably provided on the side of the secondary distribution cylinder (301) through side sliding grooves (306). Each secondary distribution plate (303) has a fixed caster wheel (305) on both sides. An inner support platform (304) is fixedly installed on the inner wall of the secondary material distribution plate (303). The moving wheel (305) travels on the inner support platform (304). A drive arm (307) is fixedly installed at the bottom of the secondary material distribution plate (303). The drive arm (307) is inserted into the guide rail groove (205). When the bottom of the secondary material distribution cylinder (301) is fixed to the top of the material distribution plate (201), the bottom of the secondary material distribution cylinder (301) covers the outside of the guide rail groove (205).

5. The natural fragrance essential oil grading and extraction device according to claim 4, characterized in that: The overload protection drive assembly (400) includes a top shaft rod (401) rotatably mounted on the bottom end of the distribution plate (201) and a spline shaft rod (408) rotatably mounted on the support plate (102). A drive top wheel (402) and a fixed meshing gear ring (404) are fixedly mounted on the top shaft rod (401). A top wheel arc groove (403) is opened on the drive top wheel (402). The fixed meshing gear ring (404) is located below the drive top wheel (402). A push base platform (409) and an auxiliary gear (410) are fixedly mounted on the bottom of the spline shaft rod (408). A push spring (407) and a movable meshing gear ring (406) are sleeved on the top of the spline shaft rod (408). A spline inner groove (405) matching the spline shaft rod (408) is opened in the center of the movable meshing gear ring (406).

6. The natural fragrance essential oil grading and extraction device according to claim 2, characterized in that: The oil guide arm assembly (600) includes an oil guide main chamber (601) fixed to the top of the sealed cover (500). An oil guide main pipe (602) is provided on one side of the oil guide main chamber (601), and multiple oil guide branch pipes (603) are fixedly provided at the bottom of the oil guide main chamber (601). A spiral oil distribution pipe (604) is fixedly provided at the bottom of the oil guide branch pipe (603), and multiple oil distribution grooves (605) are opened on the bottom surface of the spiral oil distribution pipe (604).

7. The natural fragrance essential oil grading and extraction device according to claim 4, characterized in that: Multiple distribution plates (204) on the central arm column (206) are fixed on the inner wall of the straight tank (101). The multiple distribution plates (204) divide the overall space inside the straight tank (101) into multiple primary extraction spaces. The multiple secondary distribution plates (303) extend synchronously on the secondary distribution cylinder (301) to further divide the primary extraction space into multiple secondary extraction spaces.

8. The natural fragrance essential oil grading and extraction device according to claim 5, characterized in that: The overload protection drive assembly (400) is located below the distribution plate (201) and is located inside the ring cover (210). The bottom of the drive arm (307) is inserted into the top wheel arc groove (403). The drive top wheel (402) drives multiple secondary distribution plates (303) to extend and slide synchronously on the secondary distribution cylinder (301) through the top wheel arc groove (403) and the drive arm (307).

9. A natural fragrance essential oil grading and extraction device according to claim 5, characterized in that: The spline shaft (408) is located below the top shaft (401). The movable meshing gear ring (406) slides on the spline shaft (408) through the spline inner groove (405). The top and bottom of the push spring (407) abut against the movable meshing gear ring (406) and the push base (409) respectively. The teeth of the movable meshing gear ring (406) and the teeth of the fixed meshing gear ring (404) are aligned. Through the push of the push spring (407) against the movable meshing gear ring (406), an elastic abutment meshing structure is formed between the movable meshing gear ring (406) and the fixed meshing gear ring (404). The auxiliary gear (410) meshes with the drive gear (208).

10. A natural fragrance essential oil grading and extraction device according to claim 6, characterized in that: The number of spiral oil distribution pipes (604) corresponds one-to-one with the number of multiple primary extraction spaces inside the straight tank (101). When the sealing cover (500) is fastened to the top of the extraction tank assembly (100), the spiral oil distribution pipes (604) are positioned directly above the primary extraction spaces.

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