High-efficiency volatile oil extraction equipment

Abstract

The invention discloses a highly efficient volatile oil extraction device, belonging to the field of pharmaceutical and chemical equipment. The device mainly comprises an extraction tank (1), a condenser (2) and an oil-water separator (3). The extraction tank (1) is connected to the condenser (2) via a steam delivery pipe (4), and the condenser (2) is connected to a bell mouth (37) arranged in the middle of the oil-water separator (3) via a fragrance water delivery pipe (5). The device has a novel design, a unique structure, and is easy to operate. It can simultaneously extract and separate light oil and heavy oil, and can minimize the emulsification and oxidative polymerization of volatile oil, thereby increasing the yield of volatile oil and improving the quality of volatile oil. It also meets the requirements of pharmaceutical production quality management specifications while increasing production efficiency.

Description

Technical Field

[0001] The invention discloses a high-efficiency volatile oil extraction device, which is suitable for extracting and separating volatile oils in traditional Chinese medicines, natural medicines and food raw materials, and belongs to the field of medicine and chemical equipment. Background Art

[0002] Volatile oils are also called essential oils, fragrance oils or aromatic oils. They are called "oils" because they are light yellow liquids at room temperature and have high fluidity. They also have a certain aromatic smell and can volatilize at room temperature, so they are called volatile oils. Volatile oils are mainly derived from aromatic Chinese medicines, especially from Asteraceae (Artemisia argyi, Atractylodes macrocephala, Atractylodes macrocephala), Umbelliferae (Angelica sinensis, Fennel, Bupleurum), Rutaceae (Orange, Zanthoxylum bungeanum), Lamiaceae (Mint, Perilla), Zingiberaceae (such as ginger, Curcuma), etc. They are mainly composed of chemical molecules such as terpenes, aldehydes, esters, alcohols, etc. Most plant essential oils have multiple biological activities such as anti-inflammatory, antibacterial, anti-allergic, antioxidant, enzyme inhibition and anti-tumor, and are currently widely used in spices, food industry, pharmaceuticals, medical treatment, cosmetics and agricultural pests.

[0003] The main methods for extracting volatile oils include steam distillation, organic solvent extraction, enzymatic hydrolysis, sonic extraction, supercritical fluid extraction, distillation extraction, solid phase microextraction, headspace collection, etc. There are certain differences in the extraction rate and composition of volatile oils among the various methods. Steam distillation refers to soaking and wetting the coarse powder or slices of medicinal materials containing volatile components, heating and distilling or passing steam distillation. The volatile components in the sample are taken out with the steam distillation. Because of the high extraction purity, a wide variety of types, simple operation, and no solvent pollution, steam distillation is widely used in production and testing.

[0004] When conventional volatile oil extraction equipment extracts volatile oil by steam distillation, the vapor of the oil-water mixture encounters a condenser during its rising process, condenses into aromatic water and flows down, and directly drips onto the top liquid surface of the oil-water separator. The top layer of the liquid surface of the oil-water separator is floating light oil, and the light oil surface is continuously hit and impacted by the oil-water mixture droplets that fall after condensation, causing serious emulsification, and leading to problems such as incomplete separation of volatile oil and low volatile oil yield. In addition, the following deficiencies exist when using conventional volatile oil extraction equipment: (1) In conventional oil-water separators, the aromatic water flows in too fast, resulting in insufficient time for the oil and water to separate into layers, that is, the oil and water flow back to the extraction tank through the overflow pipe, and this cycle repeats, eventually causing the volatile oil to be heated for a long time, undergoing oxidative polymerization, and resulting in a low volatile oil yield; (2) The reflux pipe at the lower end of the condenser lacks a filtering device, resulting in the inability to remove impurities mixed in the distillate in a timely manner, requiring separate filtration when collecting the oil, which is time-consuming and labor-intensive; (3) When extracting "light oil" or "heavy oil", it is necessary to temporarily replace different oil-water separators, which is time-consuming and labor-intensive; (4) Collecting volatile oil in the general area of ​​the workshop does not meet the GMP management requirements for pharmaceuticals. It is usually collected by piped into a movable clean laminar flow hood, which is cumbersome to operate and prone to bacterial contamination. The transferred adhesion causes waste of volatile oil. Summary of the invention

[0005] The existing volatile oil extraction equipment has the following shortcomings: the condensed oil and water droplets continuously hit the light oil liquid surface, causing emulsification and incomplete subsequent volatile oil separation, and low volatile oil yield; the oil-water separator has an unreasonable structure, and the oil and water do not have enough time to separate and flow back into the extraction tank through the overflow pipe; the volatile oil extraction equipment cannot extract and separate heavy oil and light oil at the same time; the reflux pipeline lacks a filtering device, and impurities mixed in the aromatic water cannot be removed in time; and the collection of volatile oil in the general area of ​​the workshop does not meet the pharmaceutical GMP management requirements. The technical problem to be solved by the present invention is to provide a high-efficiency volatile oil extraction equipment.

[0006] The inventor has innovatively designed and coordinated optimized the oil-water separator, which is an important component of the volatile oil extraction equipment. By setting up an olive-shaped oil-water separator 3 with a novel structure, the oil-water separator 3 is connected to the aromatic water delivery pipe 5 through a bell mouth 37 set in the middle of the oil-water separator 3; and setting up "light oil collection pipe 31", "heavy oil collection pipe 32" and "filter 6", and other novel structures, the emulsification phenomenon is effectively avoided, the oil and water are fully separated, and the volatile oil extraction rate is improved; the light oil and heavy oil can be extracted and separated at the same time, making the extraction operation convenient and reliable; the present invention facilitates the transfer of the extracted volatile oil, reduces the loss caused by the long-distance pipeline transportation of the volatile oil, and is more in line with the requirements of GMP specifications.

[0007] The technical problem solved by the present invention is specifically achieved by the following technical solutions:

[0008] A highly efficient volatile oil extraction device, mainly composed of an extraction tank 1, a condenser 2 and an oil-water separator 3, wherein the extraction tank 1 is connected to the condenser 2 through a steam delivery pipe 4, and the condenser 2 is connected to a bell mouth 37 arranged in the middle of the oil-water separator 3 through a fragrance water delivery pipe 5;

[0009] The oil-water separator 3 is olive-shaped with a large middle and small ends. The upper part is detachably connected to the light oil collection pipe 31 through an upper frosted interface 13, and the lower part is detachably connected to the heavy oil collection pipe 32 through a lower frosted interface 14.

[0010] In the present invention, an upper overflow pipe 8 is arranged on the side of the oil-water separator 3 at the same level as the upper frosted interface 13, and an upper overflow pipe valve 10 is arranged on the upper overflow pipe 8; a lower overflow pipe 7 is arranged on the side of the oil-water separator 3 at the same level as the lower frosted interface 14, and a lower overflow pipe valve 9 is arranged on the lower overflow pipe 7.

[0011] A filter 6 is provided at the connection between the lower end of the aromatic water delivery pipe 5 and the bell mouth 37 .

[0012] In the present invention, the lower overflow pipe 7 and the upper overflow pipe 8 are connected to the overflow main pipe 11, and the upper port 12 of the overflow main pipe is flush with the light oil collection pipe drain switch 35. The light oil collection pipe (31) is marked with a metering scale line, and its 0 reference line is flush with the light oil collection pipe drain switch (35); the heavy oil collection pipe (32) is marked with a metering scale line, and its 0 reference line is flush with the heavy oil collection pipe drain switch (36); the measurement accuracy of the metering scale line is 1mL.

[0013] In the present invention, the filter 6 is composed of an upper filter plate 61 and a lower filter plate 62 , and filter holes 63 are provided on both the upper filter plate 61 and the lower filter plate 62 .

[0014] Preferably, the pore size of the filter hole 63 is 125-180 μm; the optimal pore size of the filter hole 63 is 150 μm.

[0015] During the design and optimization process of the high-efficiency volatile oil extraction equipment of the present invention, the inventors noticed that in conventional volatile oil extraction equipment, oil and water droplets dripping after condensation continuously hit the light oil liquid surface, resulting in incomplete emulsification and subsequent volatile oil separation; the structure of the oil-water separator is unreasonable, and the oil and water do not have enough time to separate and flow back into the extraction tank through the overflow pipe, resulting in a low volatile oil yield; it is impossible to extract and separate heavy oil and light oil at the same time; the reflux pipeline lacks a filtering device, and impurities mixed in the aromatic water cannot be removed in time, etc.

[0016] In view of the common technical difficulties existing in the extraction of volatile oils mentioned above, the inventors have innovatively designed and coordinated the optimization of the oil-water separator 3, an important component, on the basis of the existing volatile oil extraction equipment, and set the oil-water separator 3 to be an olive-shaped structure with a novel structure, and keep it in communication with the aromatic water delivery pipe 5 through the bell mouth 37 set in the middle of the oil-water separator 3. The setting of the bell mouth 37 can effectively slow down the speed of the aromatic water flowing into the oil-water separator 3 through the aromatic water delivery pipe 5. At the same time, a filter 6 is set at the lower end of the aromatic water delivery pipe 5 and the connection with the bell mouth 37, which further reduces the flow rate of the aromatic water delivery pipe 5 into the oil-water separator 3, so that the aromatic water enters the oil-water separator 3 relatively slowly, and with the large volume design of the oil-water separator 3, there is enough time for stratification.

[0017] In addition, the aromatic water delivery pipe 5 is connected to the bell mouth 37 in the middle of the oil-water separator 3, which completely avoids the emulsification phenomenon caused by the condensed oil and water droplets constantly hitting the light oil liquid surface in conventional volatile oil extraction equipment, thereby improving the yield and quality of volatile oil. At the same time, in view of the drawback that conventional volatile oil extraction equipment cannot extract and separate heavy oil and light oil at the same time, "light oil collection pipe 31" and "heavy oil collection pipe 32" are set to extract and separate light oil and heavy oil at the same time, which is convenient and fast, and more in line with the requirements of GMP specifications.

[0018] Specifically, during the volatile oil extraction operation, the raw medicinal material slices and water are added to the extraction tank 1 in proportion, and the steam is turned on for heating and extraction. As the temperature and pressure inside the extraction tank 1 gradually increase, the water boils, and the boiling water produces sufficient steam to effectively bring out the volatile oil in the Chinese medicinal slices. The oil-water mixture steam carrying a sufficient amount of volatile oil enters the condenser 2 from bottom to top through the steam delivery pipe 4 for condensation, and is converted from the gas phase into an oil-water mixed liquid. The oil-water mixture passes through the aromatic water delivery pipe 5 and the filter 6 respectively, and enters the oil-water separator 3 filled with aromatic water at the bell mouth 37. Due to the obstruction and buffering of the filter 6, and the slow flow effect of the bell mouth 37 pipeline from small to large, the oil-water mixed liquid flows into the oil-water separator 3 from the bell mouth 37, and its flow rate has been significantly slowed down. Then it is fully separated in the olive-shaped oil-water separator 3 with a large enough cavity and full of aromatic water, and it is avoided that the condensed oil-water droplets continue to hit the light oil liquid surface, causing emulsification.

[0019] When the relative density of the extracted light oil volatile oil is less than 1, close the upper overflow pipe valve 10 and the heavy oil collection pipe valve 34, and open the lower overflow pipe valve 9 and the light oil collection pipe valve 33 at the same time. As mentioned above, the oil-water mixture is fully separated in the olive-shaped oil-water separator 3, and the light oil continuously gathers and floats up, passing through the upper frosted interface 13 and the light oil collection pipe valve 33, and enters the light oil collection pipe 31 to gather inside and wait for recovery. After the extraction is completed, close the light oil collection pipe valve 33, rotate the light oil collection pipe 31, remove it from the upper frosted interface 13, disinfect the outer surface, move it into the clean area, and collect the volatile oil.

[0020] When the relative density of the extracted heavy oil volatile oil is greater than 1, close the lower overflow pipe valve 9 and the light oil collection pipe valve 33, and open the upper overflow pipe valve 10 and the heavy oil collection pipe valve 34 at the same time. As mentioned above, the oil-water mixture is fully separated in the olive-shaped oil-water separator 3, and the heavy oil continues to gather and sink, passing through the lower frosted interface 14 and the heavy oil collection pipe valve 34, and enters the heavy oil collection pipe 32 to gather inside and wait for recovery. After the extraction is completed, close the heavy oil collection pipe valve 34, rotate the heavy oil collection pipe 32, remove it from the lower frosted interface 14, disinfect the outer surface, move it into the clean area, and collect the volatile oil.

[0021] The core component of the present invention, the oil-water separator 3, is uniquely designed and novel in structure. The oil-water separator 3 is configured to be an olive-shaped structure with small ends and a large middle portion, and is connected to the aromatic water delivery pipe 5 and the filter 6 via a bell mouth 37 provided in the middle of the oil-water separator 3. The coordinated cooperation of the above components allows the aromatic water to have sufficient stratification time in the oil-water separator 3, allowing for full stratification, and avoids emulsification, thereby improving the yield and quality of the volatile oil. In addition, the provision of the light oil collection pipe 31 and the heavy oil collection pipe 32 allows the volatile oil extraction equipment of the present invention to collect heavy oil and light oil at the same time, facilitating the transfer of the obtained volatile oil, which is more in line with GMP specifications.

[0022] The invention has novel structure, scientific design, convenient operation and remarkable technical effect. Compared with the existing volatile oil extraction equipment, the invention has the following substantial characteristics and progress:

[0023] 1. The present invention avoids emulsification and oxidative polymerization by providing an olive-shaped oil-water separator 3 with a unique structure, which is small at both ends and large in the middle, and combines a filter 6 provided on the aromatic water delivery pipe 5 and a bell mouth 37 provided in the middle of the oil-water separator, thereby allowing the oil and water to be fully separated, thereby improving the yield and quality of the volatile oil.

[0024] 2. By arranging a filter 6 on the aromatic water delivery pipe 5, on the one hand, impurities in the aromatic water can be intercepted to make the obtained volatile oil purer; on the other hand, the filter 6 can play a slow flow role, allowing the aromatic water to enter the bell mouth 37 and the oil-water separator 3 at a smaller flow rate, thereby promoting the full stratification of oil and water.

[0025] 3. By setting up the olive-shaped oil-water separator 3 with unique functions, sufficient time and space are provided for the complete separation of oil and water, solving the problem in the industry that when the density of volatile oil is close to that of water, the volatile oil cannot be separated and extracted.

[0026] 4. The present invention is provided with a light oil collection pipe 31 and a heavy oil collection pipe 32 with detachable and closable functions, combined with the closing function design of the light oil collection pipe valve 33 and the heavy oil collection pipe valve 34, to jointly realize the rapid switching of equipment when extracting "light oil" or "heavy oil", and the convenient transfer of volatile oil after the oil extraction is completed, saving labor costs, improving production efficiency, and at the same time making the volatile oil extraction operation more in line with the requirements of the pharmaceutical production quality management specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to facilitate understanding and grasping the technical solution of the invention of this application, the following is a brief introduction to the drawings. It should be noted that the following drawings should not be regarded as limiting the scope of the technical solution. For ordinary technicians in this field, other relevant drawings can be obtained based on the following drawings without creative work.

[0028] Attached Figure 1 This is a schematic diagram of the structure of the volatile oil extraction equipment, in which the markings are described as follows:

[0029] 1-extraction tank, 2-condenser, 3-oil-water separator, 4-steam delivery pipe, 5-aromatic water delivery pipe, 6-filter, 7-lower overflow pipe, 8-upper overflow pipe, 9-lower overflow pipe valve, 10-upper overflow pipe valve, 11-overflow main pipe, 12-upper port of overflow main pipe, 13-upper frosted interface, 14-lower frosted interface;

[0030] Attached Figure 2 This is a schematic diagram of the oil-water separator structure, in which the markings are described as follows:

[0031] 31-light oil collecting pipe, 32-heavy oil collecting pipe, 33-light oil collecting pipe valve, 34-heavy oil collecting pipe valve, 35-light oil collecting pipe drain switch, 36-heavy oil collecting pipe drain switch, 37-bell mouth;

[0032] Attached Figure 3 This is a schematic diagram of the filter structure, where the markings are described as follows:

[0033] 61-upper filter plate, 62-lower filter plate, 63-filter hole. DETAILED DESCRIPTION

[0034] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0035] In order to make the purpose, technical solutions and advantages of this application clearer and more explicit, the technical solutions in the embodiments will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the following embodiments are part of the embodiments of this application, but not all of them. Generally speaking, the components and connection methods described and shown in the accompanying drawings and the embodiments can be set and arranged in other ways, which are not listed here one by one due to limited space.

[0036] Therefore, the following detailed description of the embodiments does not limit the scope of protection claimed in the present application, and equivalent substitutions or modifications made by ordinary technicians in the field without making creative work should be included in the scope of protection of the present invention.

[0037] Example 1 High-efficiency volatile oil extraction equipment structure and operation process

[0038] As attached Figure 1 , Attachment Figure 2 As shown, the present invention is mainly composed of an extraction tank 1, a condenser 2 and an oil-water separator 3. The extraction tank 1 is connected to the condenser 2 through a steam delivery pipe 4, and the condenser 2 is connected to a bell mouth 37 set in the middle of the oil-water separator 3 through a fragrance water delivery pipe 5; the oil-water separator 3 is olive-shaped with a large middle and small ends, and the upper part is detachably connected to the light oil collection pipe 31 through an upper frosted interface 13, and the lower part is detachably connected to the heavy oil collection pipe 32 through a lower frosted interface 14. An upper overflow pipe 8 is arranged on the side of the oil-water separator 3 at the same level with the upper frosted interface 13, and an upper overflow pipe valve 10 is arranged on the upper overflow pipe 8; a lower overflow pipe 7 is arranged on the side of the oil-water separator 3 at the same level with the lower frosted interface 14, and a lower overflow pipe valve 9 is arranged on the lower overflow pipe 7.

[0039] During the volatile oil extraction operation, the raw medicinal material slices and water are added to the extraction tank 1 in proportion, and the steam is turned on for heating and extraction. As the temperature and pressure inside the extraction tank 1 gradually increase, the water boils, and the boiling water produces sufficient steam to effectively take out the volatile oil in the Chinese medicinal slices. The oil-water mixture steam carrying a sufficient amount of volatile oil enters the condenser 2 from bottom to top through the steam delivery pipe 4 for condensation, and is converted from the gas phase into an oil-water mixed liquid. The oil-water mixture passes through the aromatic water delivery pipe 5 and the filter 6 respectively, and enters the oil-water separator 3 filled with aromatic water at the bell mouth 37. Due to the obstruction and buffering of the filter 6, and the slow flow effect of the bell mouth 37 pipeline from small to large, the oil-water mixed liquid flows into the oil-water separator 3 from the bell mouth 37, and its flow rate has been significantly slowed down. Then it is fully separated in the olive-shaped oil-water separator 3 with a large enough cavity and full of aromatic water, and the condensed oil-water droplets are prevented from constantly hitting the light oil liquid surface, causing emulsification.

[0040] When extracting light oil (relative density of volatile oil is less than 1), close the upper overflow pipe valve 10 and the heavy oil collection pipe valve 34, and open the lower overflow pipe valve 9 and the light oil collection pipe valve 33 at the same time. As mentioned above, the oil-water mixture is fully separated in the olive-shaped oil-water separator 3, and the light oil continuously gathers and floats up, passing through the upper frosted interface 13 and the light oil collection pipe valve 33, and enters the light oil collection pipe 31 to gather inside and wait for recovery. After the extraction is completed, close the light oil collection pipe valve 33, rotate the light oil collection pipe 31, remove it from the upper frosted interface 13, disinfect the outer surface, move it into the clean area, and collect the volatile oil.

[0041] When extracting heavy oil (relative density of volatile oil is greater than 1), close the lower overflow pipe valve 9 and the light oil collection pipe valve 33, and open the upper overflow pipe valve 10 and the heavy oil collection pipe valve 34 at the same time. As mentioned above, the oil-water mixture is fully separated in the olive-shaped oil-water separator 3, and the heavy oil continues to gather and sink, passing through the lower frosted interface 14 and the heavy oil collection pipe valve 34, and enters the heavy oil collection pipe 32 to gather inside and wait for recovery. After the extraction is completed, close the heavy oil collection pipe valve 34, rotate the heavy oil collection pipe 32, remove it from the lower frosted interface 14, disinfect the outer surface, move it into the clean area, and collect the volatile oil.

[0042] Example 2 Extraction of Angelica dahurica Volatile Oil

[0043] 1 Materials and Methods

[0044] 1.1 Materials

[0045] 180kg of Angelica sinensis slices, provided by Lunan Houpu Pharmaceutical Co., Ltd.

[0046] 1.2 Methods

[0047] Take the same batch of Angelicae Sinensis slices, add 10 times the amount of water, and use conventional volatile oil extraction equipment and the practical high-efficiency volatile oil extraction equipment to extract volatile oil. The pore size of the filter 63 on the filter 6 of the high-efficiency volatile oil extraction equipment is 150 μm. The extraction time of the two groups of experiments is 8 hours.

[0048] 2 Results

[0049] The results are shown in Table 1. When the extraction time and extraction temperature and other conditions are kept consistent, the volatile oil yields of the two groups with the same formula are 0.26% and 0.36% respectively. Compared with the conventional volatile oil extractor, the volatile oil yield of the volatile oil extractor of the present invention is increased by more than 24%.

[0050] Table 1 Results of the extraction test of volatile oil from Angelica sinensis (n=2)

[0051]

[0052] When the conditions such as extraction time and extraction temperature are kept consistent, the amount of angelica volatile oil extracted by the volatile oil extraction equipment of the present invention is significantly higher than that of conventional volatile oil extraction equipment. The poor separation degree of conventional volatile oil extraction equipment causes part of the oil to repeatedly overflow into the extraction tank and oxidize and discolor due to long heating time. The volatile oil extracted by the volatile oil extraction equipment of the present invention is free of impurities and has better quality.

[0053] Example 3 Extraction of volatile oil from dried ginger

[0054] 1 Materials and Methods

[0055] 1.1 Materials

[0056] 180kg dried ginger slices, provided by Lunan Houpu Pharmaceutical Co., Ltd.

[0057] 1.2 Methods

[0058] Take the same batch of dried ginger slices, add 8 times the amount of water, and use conventional volatile oil extraction equipment and the practical high-efficiency volatile oil extraction equipment to extract volatile oil. The pore size of the filter 63 on the filter 6 of the high-efficiency volatile oil extraction equipment is 180 μm. The extraction time of both groups of experiments is 5 hours.

[0059] 2 Results

[0060] The results are shown in Table 2. When the extraction time and extraction temperature and other conditions are kept consistent, the volatile oil yields of the two groups with the same formula are 0.35% and 0.45% respectively. Compared with the conventional volatile oil extractor, the volatile oil yield of the volatile oil extractor of the present invention is increased by more than 28%.

[0061] Table 2 Dry ginger volatile oil extraction test results (n = 2)

[0062]

[0063] When conditions such as extraction time and extraction temperature remain consistent, the amount of dried ginger volatile oil extracted by the volatile oil extraction equipment of the present invention is significantly higher than that of conventional volatile oil extraction equipment. Conventional volatile oil extraction equipment has poor separation, resulting in part of the oil repeatedly overflowing into the extraction tank, and oxidizing and discoloring due to long heating time; the volatile oil extracted by the volatile oil extraction equipment of the present invention is free of impurities and has better quality.

[0064] Example 4 Peppermint volatile oil extraction

[0065] 1 Materials and Methods

[0066] 1.1 Materials

[0067] 60kg of mint slices, provided by Lunan Houpu Pharmaceutical Co., Ltd.

[0068] 1.2 Methods

[0069] Take the same batch of mint slices, add 12 times the amount of water, and use conventional volatile oil extraction equipment and the practical high-efficiency volatile oil extraction equipment to extract volatile oil. The pore size of the filter 63 on the filter 6 of the high-efficiency volatile oil extraction equipment is 125 μm. The extraction time of both groups of experiments is 6 hours.

[0070] 2 Results

[0071] The results are shown in Table 3. When the extraction time and extraction temperature and other conditions are kept consistent, the volatile oil yields of the two groups with the same formula are 0.68% and 0.87% respectively. Compared with the conventional volatile oil extractor, the volatile oil yield of the volatile oil extractor of the present invention is increased by more than 27.9%.

[0072] Table 3 Peppermint volatile oil extraction test results (n = 2)

[0073]

[0074] It can be seen from the test results that, when the conditions such as extraction time and extraction temperature remain consistent, the amount of peppermint volatile oil extracted by the volatile oil extraction equipment of the present invention is higher than that of the conventional volatile oil extraction equipment, and the volatile oil extracted by the volatile oil extraction equipment of the present invention is free of impurities and has better quality.

Claims

1. A highly efficient volatile oil extraction device, mainly composed of an extraction tank (1), a condenser (2) and an oil-water separator (3), characterized in that: The extraction tank (1) is connected to the condenser (2) through a steam delivery pipe (4), and the condenser (2) is connected to a bell mouth (37) provided in the middle of the oil-water separator (3) through an aromatic water delivery pipe (5); An upper overflow pipe (8) is arranged on the side of the oil-water separator (3) at a position flush with the upper frosting interface (13), and an upper overflow pipe valve (10) is arranged on the upper overflow pipe (8); a lower overflow pipe (7) is arranged on the side of the oil-water separator (3) at a position flush with the lower frosting interface (14), and a lower overflow pipe valve (9) is arranged on the lower overflow pipe (7); The oil-water separator (3) is olive-shaped with a large middle and small ends, and the upper part is detachably connected to the light oil collection pipe (31) through an upper frosted interface (13), and the lower part is detachably connected to the heavy oil collection pipe (32) through a lower frosted interface (14); A filter (6) is provided at the connection between the lower end of the aromatic water delivery pipe (5) and the bell mouth (37).

2. The high-efficiency volatile oil extraction equipment according to claim 1, characterized in that: The lower overflow pipe (7) and the upper overflow pipe (8) are connected to the overflow main pipe (11), and the upper port (12) of the overflow main pipe is flush with the light oil collection pipe drain switch (35).

3. The efficient volatile oil extraction equipment according to claim 1 or 2, characterized in that: The light oil collecting pipe (31) is marked with a metering scale line, and its 0 reference line is flush with the light oil collecting pipe drain switch (35); the heavy oil collecting pipe (32) is marked with a metering scale line, and its 0 reference line is flush with the heavy oil collecting pipe drain switch (36).

4. The high-efficiency volatile oil extraction equipment according to claim 3, characterized in that: The measurement accuracy of the metering scale is 1 mL.

5. The high-efficiency volatile oil extraction equipment according to claim 1, characterized in that: The filter (6) is composed of an upper filter plate (61) and a lower filter plate (62), and filter holes (63) are provided on the upper filter plate (61) and the lower filter plate (62).

6. The high-efficiency volatile oil extraction equipment according to claim 5, characterized in that: The pore size of the filter pore (63) is 125-180 μm.

7. The high-efficiency volatile oil extraction equipment according to claim 6, characterized in that: The pore size of the filter hole (63) is 150 μm.

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