A separation device for rose flower essential oil extraction

Abstract

This invention relates to a separation device for extracting rose essential oil, belonging to the field of extraction and separation technology. It includes: a carbon dioxide gas source, a filter, an intermediate tank, a pressure pump, and an extraction chamber connected to each other. The extraction chamber includes a pressure chamber comprising a movable chamber and a fixed chamber connected to each other. The fixed chamber is connected to the extraction chamber and has an input pipe that introduces supercritical carbon dioxide into the pressure chamber. A stepper motor is connected to the middle of the extraction chamber and has a connecting frame that connects to multiple movable chambers. When the stepper motor rotates, the multiple movable chambers rotate and interchange positions. An extraction vessel is inserted into the movable chamber. When the movable and fixed chambers are closed, the extraction vessel is placed in the pressure chamber and rotates with the movable chamber. This invention solves the technical problem in existing technologies that cannot achieve graded extraction of different components from roses and cannot accurately blend rose essential oil fragrances after separation.

Description

Technical Field

[0001] This invention belongs to the field of extraction and separation technology, and specifically relates to a separation device for extracting rose essential oil. Background Technology

[0002] Rose essential oil contains more than 200 active ingredients, mainly alcohols such as phenylethanol, citronellol, geraniol, and nerol, combined with esters, phenols, and terpenes. More than 60% of these are low-boiling-point, heat-sensitive, and easily oxidized components. They will decompose and char at high temperatures (>90℃), causing the aroma to completely deteriorate. More specifically, phenylethanol, the core aroma component of rose (accounting for 30%-50%), is easily soluble in water and will be lost in large quantities to rose hydrosol during distillation. Therefore, the traditional distillation extraction method for obtaining rose essential oil is relatively inefficient.

[0003] The existing patent application number 201910776647.6 discloses a 10,000-liter supercritical carbon dioxide fluid extraction system, which includes a condensation system, an extraction system, a separation system and a recovery system connected in sequence. The condensation system adopts a two-stage condenser. The extraction system includes five extraction vessels with a height-to-diameter ratio of 8-20:1 connected in series. The separation system adopts a combination of separation vessel and hydrocyclone separator. The recovery system includes a recovery condenser, a tail gas tank and a diaphragm compressor.

[0004] The supercritical carbon dioxide extraction systems represented by the aforementioned patent documents generally suffer from the following drawbacks:

[0005] Roses contain many active ingredients that contribute to their fragrance. Traditional supercritical carbon dioxide extraction systems are only used for single-use extraction. While some existing extraction systems include five extraction vessels in series, with vessels I-IV operating in series and vessel V used for loading and unloading, this design aims to extend the contact time between carbon dioxide and the material, improve carbon dioxide utilization, and increase production efficiency. However, it cannot achieve graded extraction of different components from roses, making it difficult to meet the requirements for precise blending of rose essential oil fragrances after separation. Summary of the Invention

[0006] This invention provides a separation device for extracting rose essential oil, which solves the technical problem in the prior art that it is impossible to achieve graded extraction of different components in roses and that it is difficult to meet the technical requirements of precise blending of rose essential oil fragrance after separation.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0008] This application provides a separation device for extracting rose essential oil, comprising a carbon dioxide gas source, a filter, an intermediate tank, a pressure pump, and an extraction chamber connected to each other, wherein the extraction chamber includes:

[0009] The pressurized chamber includes a movable chamber and a fixed chamber that are plugged into each other. The fixed chamber is connected to the extraction chamber and is connected to an input pipe through which supercritical carbon dioxide is introduced into the pressurized chamber.

[0010] A stepper motor is connected to the middle of the extraction chamber. The stepper motor is connected to a connecting frame, which is connected to multiple movable chambers. When the stepper motor rotates, the multiple movable chambers rotate and interchange positions.

[0011] An extraction vessel is inserted into the movable chamber. When the movable chamber and the fixed chamber are closed, the extraction vessel is placed in the pressurized chamber and rotates with the movable chamber.

[0012] The processing component is connected to the bottom of the extraction chamber. The processing component is arranged correspondingly to the fixed chamber. When supercritical carbon dioxide enters the pressurized chamber, it passes through the extraction vessel and then enters the processing component from the bottom of the movable chamber.

[0013] The above technical solution uses a stepper motor to rotate the extraction vessel and change its position in different pressure chambers, thereby achieving graded extraction of different components from rose petals in the same extraction vessel, and thus meeting the requirements for precise blending of rose essential oil.

[0014] In this invention, the extraction chamber further includes:

[0015] A guide cylinder is fixedly connected to the connecting frame, and the open end of the guide cylinder is slidably connected to the movable compartment.

[0016] A telescopic push rod is connected inside the guide cylinder, and the movable end of the telescopic push rod is connected to the movable chamber.

[0017] The above technical solution uses telescopic push rods and guide cylinders to separate the moving chamber and the fixed chamber, reducing the risk of displacement interference and improving the safety of movement.

[0018] In this invention, the extraction chamber further includes:

[0019] A fixed protective cover is attached to the outside of the stepper motor;

[0020] The movable protective cover is slidably connected to the fixed protective cover; the guide cylinder passes through the movable protective cover, and the movable protective cover rotates synchronously when the connecting frame rotates.

[0021] The above technical solution uses both fixed and movable protective covers to provide appropriate shielding for moving parts, reducing the impact of volatile organic compounds on moving parts.

[0022] In this invention, the extraction chamber further includes:

[0023] The discharge port is located at the bottom of the extraction vessel;

[0024] The plug is conical and abuts against the opening at the end of the discharge port facing the inside of the extraction vessel;

[0025] A counterweight is detachably connected to the bottom of the plug, and the counterweight is disposed inside the discharge port;

[0026] The top block is connected to the bottom of the mobile chamber. When the extraction vessel is placed into the mobile chamber, the top block lifts the counterweight block, causing the plug to separate from the discharge port.

[0027] The above technical solution, by using an insertion-lifting and separation-sealing method, improves the sealing of the extraction vessel, making it easier to reduce material contamination and spillage during loading and movement.

[0028] In this invention, the extraction chamber further includes:

[0029] A positioning pin is detachably connected to the bottom of the movable chamber, and the end of the positioning pin opposite to the bottom of the movable chamber is inserted into the bottom of the extraction vessel.

[0030] The above technical solution, using positioning pins, improves the relative positional stability of the extraction vessel and the moving chamber, and enhances stability during rotation.

[0031] In this invention, the extraction chamber further includes:

[0032] A limiting guide groove is provided on the side wall of the movable chamber, and the extraction vessel is slidably connected to the limiting guide groove.

[0033] The above technical solution, by using a limiting guide groove, further enhances the relative positional stability of the extraction vessel and the moving chamber, and further improves the stability during the rotation process. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 An isometric view of the extraction chamber of a separation device for extracting rose essential oil, provided in an embodiment of the present invention;

[0036] Figure 2A front view of the extraction chamber of a separation device for extracting rose essential oil, provided in an embodiment of the present invention;

[0037] Figure 3 for Figure 2 Sectional view at point AA;

[0038] Figure 4 for Figure 3 Enlarged view of section B in the image;

[0039] Figure 5 for Figure 2 Sectional view at point C;

[0040] Figure 6 for Figure 5 A magnified view of section D in the image.

[0041] Icons: 1-Extraction chamber; 101-Discharge pipe; 2-Cover; 201-Sealing cover; 3-Processing component; 4-Pressure chamber; 401-Moving chamber; 4011-Discharge port; 4012-Limiting guide groove; 402-Fixed chamber; 4021-Input pipe; 403-Top block; 404-Positioning pin; 501-Extraction vessel; 5011-Discharge port; 502-Vessel cover; 503-Filter plate; 504-Counterweight; 505-Plug; 6-Stepper motor; 601-Connecting frame; 602-Guide cylinder; 603-Telescopic push rod; 701-Fixed protective cover; 702-Movable protective cover; 8-Material. Detailed Implementation

[0042] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0043] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0044] In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0045] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to welding, bolting, or riveting; they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] Example:

[0047] Please refer to Figures 1 to 6 , Figures 1 to 6 The image shown is an embodiment of this application.

[0048] This embodiment provides a separation device for extracting rose essential oil, including a carbon dioxide gas source, a filter, an intermediate tank, a pressure pump, and an extraction chamber 1 connected to each other. The carbon dioxide gas source, filter, intermediate tank, pressure pump, etc. are conventional devices of supercritical carbon dioxide extraction equipment, and their specific structures and connection methods are not within the scope of protection of this application, so they are not described in detail or specifically limited.

[0049] like Figures 1 to 3 As shown, extraction chamber 1 includes:

[0050] like Figure 3 and Figure 6 As shown, the pressurized chamber 4 includes a movable chamber 401 and a fixed chamber 402 that are interlocked with each other. The specific interlocking method adopts the anti-leakage connection method of pressure vessels, such as the use of grooves and labyrinth grooves with pressure-resistant gaskets for sealing. The fixed chamber 402 is connected to the extraction chamber 1 and is connected to an input pipe 4021. The input pipe 4021 inputs supercritical carbon dioxide into the pressurized chamber 4. If necessary, the input pipe 4021 will also simultaneously input an entrainer. The entrainer is mixed with supercritical carbon dioxide in the pressurized pump by the entrainer pump-mixer from the storage tank and then enters the input pipe 4021. It should be noted that the four different pressurized chambers 4 need to be connected to four pressurized pumps with different pressures. That is, after each fixed chamber 402 is closed with the rotated movable chamber 401, supercritical carbon dioxide at the rated pressure will be input. The graded extraction of active ingredients of rose is achieved according to different pressures and temperatures.

[0051] Stepper motor 6 is connected to the middle of extraction chamber 1. Stepper motor 6 is connected to connecting frame 601 through flange. Connecting frame 601 is connected to four movable chambers 401. When stepper motor 6 rotates, the four movable chambers 401 rotate and exchange positions.

[0052] The extraction vessel 501 is inserted into the movable chamber 401. When the movable chamber 401 and the fixed chamber 402 are closed, the extraction vessel 501 is placed in the pressurized chamber 4. The extraction vessel 501 rotates with the movable chamber 401. It should be noted that, Figure 6 As shown, the extraction vessel 501 and the fixed chamber 402 are in contact and therefore cannot rotate directly. Therefore, the movable chamber 401 needs to have a rearward displacement to avoid this.

[0053] The processing component 3 is connected to the bottom of the extraction chamber 1. The processing component 3 is correspondingly set with the fixed chamber 402. When supercritical carbon dioxide enters the pressurized chamber 4, it passes through the extraction vessel 501 and then enters the processing component 3 from the bottom of the movable chamber 401. It should be noted that the processing component 3 includes all other existing components required for supercritical carbon dioxide extraction. However, since it does not contribute to the technical solution of this embodiment, it is only written as a replacement for the integrity of the equipment. The description here is only used to illustrate its interconnection with the structures that contribute to the extraction. The specific contents of the processing component 3 can be obtained by those skilled in the art based on the existing public technology. No creative work is required to select applicable existing equipment. Therefore, it will not be described in detail or further limited here.

[0054] In use, after laying filter sheets on the filter plate 503 at the lower end of the extraction vessel 501, the material 8 (processed rose raw material) is filled into the extraction vessel 501. Then, another layer of filter sheets is laid on top of the material 8, and then the vessel lid 502 is tightened. The vessel lid 502 has several through holes, such as... Figure 1 As shown, open the threaded sealing cap 201 on the top cover 2 of the extraction chamber 1, then place the extraction vessel 501 into the pressure chamber 4, tighten the sealing cap 201 again, and start the equipment as shown. Figure 5 As shown, four pressurized chambers 4 are labeled sequentially from top to bottom clockwise as chamber 1, chamber 2, chamber 3, and chamber 4. After all four chambers are loaded into the extraction vessel 501, chamber 1 is started to inject supercritical carbon dioxide, while the other chambers are not injected. After the extraction is completed under pressure, the supercritical carbon dioxide is discharged into the processing component 3 and then rotated 90 degrees. For the second pressurization, chambers 1 and 2 are started, while chambers 3 and 4 are not started. In this way, each extraction vessel 501 is started and stopped one by one to complete four stages of extraction at different pressures. Different rose active ingredient extracts are obtained through four discharge pipes 101 and then enter for further fine processing.

[0055] It should be noted that in traditional existing technologies, supercritical carbon dioxide extraction equipment is typically used only for extraction at a single pressure of the target material, i.e., extraction is performed once at the rated pressure. After extraction, the equipment needs to be cleaned before extraction at another pressure to avoid mixing of effective substances and resulting in a decrease in product quality. However, this application uses independent pressurization chambers 4 corresponding to independent processing components 3, which can complete the extraction of the same material 8 at different pressures for different effective components within a single device. Compared with existing technologies, this simplifies the setup and material 8 transfer cycle. At the same time, because each pressurization chamber 4 has a rated extraction pressure, it is not necessary to gradually increase the pressure through an adjustable method, simplifying the control of the pressurization equipment. The system replaces one variable pressure system with four constant pressure systems, allowing for a single extraction of different active ingredients in rose essential oil after a single setting, without the need to change the extraction pressure each time, greatly improving the degree of automation. In addition, because there is no need to depressurize when discharging pressurized supercritical carbon dioxide from the extraction vessel 501, the active ingredients can be fully dissolved in the supercritical carbon dioxide and carried out of the extraction vessel 501, greatly reducing the residue of active ingredients in the extraction vessel 501. In contrast, traditional extraction equipment, due to the shared pipeline, will cause some active ingredients to precipitate and adhere to the pipeline during gradual depressurization and separation. If a rinsing process is not performed, there is a risk of contaminating the next extraction product and reducing the quality of the essential oil.

[0056] Through the above technical solution, a stepper motor 6 is used to rotate the extraction vessel 501 and change its position in different pressure chambers 4, so as to realize the graded extraction of different components in the rose in the same extraction vessel 501, thereby satisfying the precise blending of rose essential oil.

[0057] As a preferred implementation method, such as Figure 3 As shown, the extraction chamber 1 also includes:

[0058] The guide cylinder 602 is fixedly connected to the connecting frame 601, and the open end of the guide cylinder 602 is slidably connected to the movable chamber 401.

[0059] Telescopic push rod 603 is connected inside guide cylinder 602. The movable end of telescopic push rod 603 is connected to movable chamber 401. The exemplary telescopic push rod 603 can be an electric push rod or a hydraulic push rod. The electric push rod is easier to wire and does not require reset after the stepper motor 6 rotates. The hydraulic push rod requires a hydraulic system and is limited by the piping of the hydraulic system. It needs to be reversed and reset after rotating 360 degrees. The specific circuit and hydraulic circuit layout can be obtained by those skilled in the art through technical manuals, technical dictionaries and other known technologies. The specific layout can be used without affecting the technical effect of this embodiment. Therefore, it will not be further described or specifically limited here.

[0060] It should be noted that the pressure between the movable chamber 401, the fixed chamber 402, and the sealing cover 201 is provided by the telescopic push rod 603. Those skilled in the art need to perform a limited number of calculations based on the preset working pressure to obtain applicable values ​​for the pressure provided by the telescopic push rod 603 and the sealing performance of the seal. However, the specific parameters can be calculated by those skilled in the art without creative work, so they are not further limited or specifically described here. It should also be emphasized that no pressure vessel is completely sealed. As long as there is an opening, a seal is required. The aging and leakage of the seal requires regular maintenance, inspection, and replacement. This should not be a reason why the technical solution of this application cannot be realized. Furthermore, the technical solution in this embodiment requires all components to be working normally under rated conditions in order to achieve the technical effect.

[0061] The above technical solution uses a telescopic push rod 603 and a guide cylinder 602 to separate the moving chamber 401 and the fixed chamber 402, reducing the risk of displacement interference and improving the safety of movement.

[0062] In a preferred embodiment, the extraction chamber 1 further includes:

[0063] A fixed protective cover 701 is attached to the outside of the stepper motor 6;

[0064] The movable protective cover 702 is slidably connected to the fixed protective cover 701; the guide cylinder 602 passes through the movable protective cover 702, and the movable protective cover 702 rotates synchronously when the connecting frame 601 rotates.

[0065] The above technical solution uses both fixed and movable protective covers to provide appropriate shielding for moving parts, reducing the impact of volatile organic compounds on moving parts.

[0066] As a preferred implementation method, such as Figure 4 As shown, the extraction chamber 1 also includes:

[0067] The discharge port 5011 is located at the bottom of the extraction vessel 501;

[0068] The plug 505 is conical and abuts against the opening of the discharge port 5011 facing the inside of the extraction vessel 501.

[0069] The counterweight 504 is detachably connected to the bottom of the plug 505 and is located inside the discharge port 5011.

[0070] The top block 403 is connected to the bottom of the movable chamber 401. When the extraction vessel 501 is placed into the movable chamber 401, the top block 403 lifts the counterweight 504, causing the plug 505 to separate from the discharge port 5011.

[0071] By adopting the above technical solution, the sealing performance of the extraction vessel 501 is improved by using the insertion and lifting and separation sealing method, which facilitates the reduction of contamination of material 8 and spillage of material 8 during the loading and moving process.

[0072] In a preferred embodiment, the extraction chamber 1 further includes:

[0073] The positioning pin 404 is detachably connected to the bottom of the movable chamber 401, and the end of the positioning pin 404 facing away from the bottom of the movable chamber 401 is inserted into the bottom of the extraction vessel 501.

[0074] The above technical solution, using positioning pin 404, improves the relative positional stability of extraction vessel 501 and moving chamber 401, and enhances stability during rotation.

[0075] As a preferred implementation method, such as Figure 6 As shown, the extraction chamber 1 also includes:

[0076] The limiting guide groove 4012 is set on the side wall of the movable chamber 401, and the extraction vessel 501 is slidably connected to the limiting guide groove 4012.

[0077] Through the above technical solution, the relative positional stability of the extraction vessel 501 and the moving chamber 401 is further enhanced by the use of the limiting guide groove 4012, thereby further improving the stability during the rotation process.

[0078] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope described in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A separation device for extracting rose essential oil, comprising a carbon dioxide gas source, a filter, an intermediate tank, a pressure pump, and an extraction chamber (1) connected to each other, characterized in that, The extraction chamber (1) includes: The pressurized chamber (4) includes a movable chamber (401) and a fixed chamber (402) that are plugged into each other. The fixed chamber (402) is connected to the extraction chamber (1). The fixed chamber (402) is connected to an input pipe (4021). The input pipe (4021) inputs supercritical carbon dioxide into the pressurized chamber (4). A stepper motor (6) is connected to the middle of the extraction chamber (1). The stepper motor (6) is connected to a connecting frame (601). The connecting frame (601) is connected to multiple movable chambers (401). When the stepper motor (6) rotates, the multiple movable chambers (401) rotate and exchange positions. The extraction vessel (501) is inserted into the movable chamber (401). When the movable chamber (401) and the fixed chamber (402) are closed, the extraction vessel (501) is placed in the pressurized chamber (4), and the extraction vessel (501) rotates with the movable chamber (401). The processing component (3) is connected to the bottom of the extraction chamber (1). The processing component (3) is set in correspondence with the fixed chamber (402). When supercritical carbon dioxide enters the pressurized chamber (4), it passes through the extraction vessel (501) and then enters the processing component (3) from the bottom of the moving chamber (401).

2. The separation device for extracting rose essential oil according to claim 1, characterized in that, The extraction chamber (1) also includes: The guide cylinder (602) is fixedly connected to the connecting frame (601), and the open end of the guide cylinder (602) is slidably connected to the movable compartment (401); A telescopic push rod (603) is connected inside the guide cylinder (602), and the movable end of the telescopic push rod (603) is connected to the movable chamber (401).

3. The separation apparatus for extracting rose essential oil according to claim 2, characterized in that, The extraction chamber (1) also includes: A fixed protective cover (701) is attached to the outside of the stepper motor (6); The movable protective cover (702) is slidably connected to the fixed protective cover (701); the guide cylinder (602) passes through the movable protective cover (702), and the movable protective cover (702) rotates synchronously when the connecting frame (601) rotates.

4. The separation apparatus for extracting rose essential oil according to claim 3, characterized in that, The extraction chamber (1) also includes: The discharge port (5011) is located at the bottom of the extraction vessel (501); The plug (505) is conical and abuts against the opening of the discharge port (5011) facing into the extraction vessel (501); A counterweight (504) is detachably connected to the bottom of the plug (505), and the counterweight (504) is disposed inside the discharge port (5011); The top block (403) is connected to the bottom of the mobile chamber (401). When the extraction vessel (501) is placed inside the mobile chamber (401), the top block (403) lifts the counterweight (504) to separate the plug (505) from the outlet (5011).

5. The separation apparatus for extracting rose essential oil according to claim 4, characterized in that, The extraction chamber (1) also includes: A positioning pin (404) is detachably connected to the bottom of the movable chamber (401), and one end of the positioning pin (404) facing away from the bottom of the movable chamber (401) is inserted into the bottom of the extraction vessel (501).

6. The separation apparatus for extracting rose essential oil according to claim 5, characterized in that, The extraction chamber (1) also includes: A limiting guide groove (4012) is provided on the side wall of the movable chamber (401), and the extraction vessel (501) is slidably connected to the limiting guide groove (4012).

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