CN113308307A - Steam distillation device for extracting volatile oil of natural product - Google Patents
Steam distillation device for extracting volatile oil of natural product Download PDFInfo
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- CN113308307A CN113308307A CN202110705063.7A CN202110705063A CN113308307A CN 113308307 A CN113308307 A CN 113308307A CN 202110705063 A CN202110705063 A CN 202110705063A CN 113308307 A CN113308307 A CN 113308307A
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B9/00—Essential oils; Perfumes
- C11B9/02—Recovery or refining of essential oils from raw materials
- C11B9/027—Recovery of volatiles by distillation or stripping
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Abstract
The invention discloses a steam distillation device for extracting natural product volatile oil, which comprises a distiller, a condenser, an oil-water separator and a water storage device which are sequentially connected end to end, wherein the distiller is provided with a distillation component and a steam component, a to-be-distilled object is placed in the distiller, the steam component generates steam and is introduced into the distillation component, the steam in the distillation component enables the volatile oil of the to-be-distilled object to escape through heat transfer, the condenser cools the escaped volatile oil, the oil-water separator separates the volatile oil and distilled water, and the water storage device collects the distilled water and supplements the distiller. Above-mentioned steam distillation device of natural product volatile oil of drawing integrates distillation subassembly and steam subassembly in same distiller, has overcome current equipment because of the separately defect of independent setting, has reduced equipment heat waste and area, has improved the thermal efficiency.
Description
Technical Field
The invention relates to the technical field of volatile oil extraction, in particular to a steam distillation device for extracting natural product volatile oil.
Background
Natural fragrances, herbs and other natural products such as roots, stems, leaves, seeds or pericarps of some other plants often contain some volatile components, collectively called volatile oils. Steam distillation is the most common method for extracting volatile oil from natural products, and the steam is in direct contact with the natural products for heat transfer, so that volatile components and the steam escape together, and then the volatile components and the steam are condensed by a condenser tube and then reach a receiver, and finally oil-water separation is carried out to obtain the volatile oil.
The conventional steam distillation device mainly comprises components such as a steam generator, a distillation still, a condenser pipe, a receiver and the like, and generally has the following defects: the water vapor generator and the distillation kettle are separately and independently arranged, so that the equipment has large heat loss and large occupied area; the steam conduit is directly inserted into the object to be steamed in the distillation kettle, so that the steam and the object to be steamed are not in gas-solid contact, and the mass and heat transfer efficiency is low, thereby prolonging the distillation time and lowering the extraction rate of volatile oil; in the traditional steam distillation device, the cooling accumulated liquid is used for soaking the object to be steamed when the distillation is started, and water in the steam generator is easy to enter a distillation kettle due to short-time explosion boiling or reduction of air pressure in the distillation kettle, so that the accumulated liquid is caused and the object to be steamed is also soaked; in most cases, the distilled water after oil-water separation is not recycled.
Therefore, how to provide a steam distillation device for extracting volatile oil of natural products, which solves the above technical problems, is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The invention aims to provide a steam distillation device for extracting volatile oil of a natural product, which integrates a distillation component and a steam component into a same distiller, overcomes the defect that the existing equipment is separately and independently arranged, reduces the heat loss and the occupied area of the equipment, and improves the heat efficiency.
In order to achieve the purpose, the invention provides a steam distillation device for extracting volatile oil of a natural product, which comprises a distiller, a condenser, an oil-water separator and a water storage device which are sequentially connected end to end, wherein the distiller is provided with a distillation assembly and a steam assembly, an object to be distilled is placed in the distiller, the steam assembly generates steam and is introduced into the distillation assembly, the steam in the distillation assembly enables the volatile oil of the object to be distilled to escape through heat transfer, the condenser cools the escaped volatile oil, the oil-water separator separates the volatile oil and distilled water, and the water storage device collects the distilled water and supplements the distiller.
Preferably, the water vapor assembly comprises an electric heating rod and a water level gauge which are arranged on the bottom side of the interior of the distiller, the distillation assembly comprises a distillation body arranged above the water vapor assembly, the distillation body is communicated with the lower part of the distillation body, and the upper side of the distillation body is communicated with the condenser.
Preferably, the distillation body comprises a liquid collecting cone and a hollow double cone which is hollow inside and conical at the upper side and the lower side, the hollow double cone is positioned above the liquid collecting cone, a conical surface sieve is arranged on the upper side of the hollow double cone, a conical surface ring is arranged on the lower side of the hollow double cone, the peripheral part of the lower side of the liquid collecting cone is communicated with the lower part of the liquid collecting cone, and the middle part of the lower side of the liquid collecting cone is communicated with the condenser.
Preferably, a plurality of air inlet inverted funnels are arranged on the periphery of the lower side of the liquid collecting cone, and a filter screen is arranged in the middle of the lower side of the liquid collecting cone.
Preferably, a water seal and a liquid accumulation valve are arranged on a connecting path of the distillation assembly leading to the condenser through the liquid accumulation cone.
The condenser is provided with a distillate outlet pipe, and the distillate outlet pipe is inserted into the oil-water separator and is positioned below the liquid level.
Preferably, the condenser is further provided with an oil-gas conduit communicated with the inner top side of the distiller, and the oil-gas conduit is provided with an oil-gas flow meter.
The oil-water separator is provided with a gas-liquid communicating pipe and a volatile oil outlet pipe, two ends of the gas-liquid communicating pipe are respectively communicated with the top side and the bottom side of the inside of the oil-water separator, the gas-liquid communicating pipe is connected with the water storage device through a distilled water pipe, and the volatile oil outlet pipe is communicated with the inside of the oil-water separator and is higher than the distilled water pipe in the communication position.
Preferably, the water reservoir is provided with a distillate water overflow pipe communicating with the interior of the water reservoir through an overflow pipe upper nozzle lower in position than the distillate water pipe.
Preferably, the water storage device is also provided with a distillate water level meter, and a water pump is arranged on a connecting path of the water storage device to the distiller.
Compared with the background technology, the steam distillation device for extracting the volatile oil of the natural product comprises a distiller, a condenser, an oil-water separator and a water storage device, wherein the distiller, the condenser, the oil-water separator and the water storage device are sequentially connected, the distiller arranged at the head and the tail of the distiller is connected with the water storage device, and the distiller is provided with a distillation assembly and a steam assembly.
During the working process of the steam distillation device for extracting the volatile oil of the natural product, the to-be-distilled object is placed into a distiller, a steam component of the distiller generates steam, the steam is introduced into the distillation component of the distiller and then enables the volatile oil of the to-be-distilled object to escape through heat transfer, the escaped steam and the volatile oil enter a condenser together for cooling, the cooled liquid flows into an oil-water separator, the volatile oil and distilled water are separated in the oil-water separator in a layering mode, the volatile oil is discharged and collected, the distilled water flows into a water storage device for recycling, and liquid water required by the steam generation can be supplemented to the distiller.
This draw water vapour distillation plant of natural product volatile oil's distiller unites two into one, integrates distillation subassembly and water vapour subassembly in same distiller, both possesses the water vapour and takes place the function, possesses the water vapour distillation function again, compares in current equipment, has overcome current equipment because of separately the defect of independent setting, has reduced equipment heat waste and area, has improved the thermal efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a steam distillation device for extracting natural product volatile oil provided by the embodiment of the invention.
Wherein:
1-a distiller, 2-a condenser, 3-an oil-water separator, 4-a water receiver, 11-a hollow double cone, 12-a conical screen, 13-a conical ring, 14-an air inlet inverted funnel, 15-a liquid gathering cone, 16-a filter screen, 17-a water level gauge, 18-an electric heating rod, 19-a distiller top cover and 21-an oil-gas flow meter, 22-distilled water outlet pipe, 23-water seal, 24-liquid accumulation valve, 25-cooling water inlet, 26-cooling water outlet, 31-gas-liquid communicating pipe, 32-distilled water pipe, 33-volatile oil outlet pipe, 34-oil outlet pipe upper pipe orifice, 41-distilled water overflow pipe, 42-overflow pipe upper pipe orifice, 43-distilled water level meter, 44-water pump and 110-overpressure safety valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a steam distillation apparatus for extracting volatile oil from a natural product according to an embodiment of the present invention.
In a first specific embodiment, the steam distillation device for extracting the volatile oil of the natural product comprises a distiller 1, a condenser 2, an oil-water separator 3 and a water storage device 4, wherein the distiller 1, the condenser 2, the oil-water separator 3 and the water storage device 4 are connected in sequence, and the distiller 1 and the water storage device 4 are connected end to form an annular circulation. Wherein, distiller 1 has distillation subassembly and vapor subassembly, and distiller 1 can supply to treat that the thing is put into, realizes the emergence effect of vapor by the vapor subassembly, realizes the distillation of the thing of treating the steam by the distillation subassembly, and condenser 2 plays oil vapor cooling effect, and oil water separator 3 plays oil-water layering separation effect, and water receiver 4 plays the water storage and collects the effect.
In the embodiment, a substance to be distilled is placed in a distiller 1, a water vapor component of the distiller 1 generates water vapor, the water vapor is introduced into a distillation component of the distiller 1 and then passes through heat transfer to enable volatile oil of the substance to be distilled to escape, the escaped water vapor and the volatile oil enter a condenser 2 together for cooling, the cooled liquid flows into an oil-water separator 3, the volatile oil and distilled water are separated in the oil-water separator 3 in a layering mode, the volatile oil is discharged and collected, the distilled water flows into a water storage device 4 for recycling, and liquid water required for generating the water vapor can be supplemented to the distiller 1.
It should be noted that the above-mentioned material to be steamed especially refers to natural products such as natural perfume, Chinese herbal medicine and other plant root, stem, leaf, seed or pericarp, and the steam distillation device is a steam distillation device for extracting volatile oil of natural products. The connection between the above-mentioned apparatuses may be an indirect pipe connection or a direct plug-in connection, and shall fall within the scope of the present embodiment.
This draw water vapour distillation plant of natural product volatile oil's distiller 1 unites two into one, integrates distillation subassembly and water vapour subassembly in same distiller 1, and both possessed the steam and take place the function, possessed the steam distillation function again, compare in current equipment, overcome current equipment because of separately the defect of independent setting, reduced equipment heat waste and area, improved the thermal efficiency.
Illustratively, the water vapor assembly comprises an electric heating rod 18 and a water level gauge 17 which are arranged at the bottom side of the interior of the distiller 1, the distillation assembly comprises a distillation body arranged above the water vapor assembly, the distillation body is communicated with the lower part of the distillation body, and the upper side of the distillation body is communicated with the condenser 2.
In this embodiment, the distiller 1 is a tank structure with a distiller top cover 19 at the top, and the distillation body is communicated with the condenser 2 through a pipeline of the distiller top cover 19. The distiller 1 is filled with liquid water, and after a distiller top cover 19 is opened, the substance to be steamed is placed on the distillation assembly inwards; when the water vapor component works, the water level gauge 17 monitors the water level inside the distiller 1, the electric heating rod 18 is electrified for heating, the water vapor is generated, when the top cover 19 of the distiller is closed, the water vapor distills the object to be steamed at the position of the distiller, and the escaped water vapor and the volatile oil enter the condenser 2 through a pipeline connected with the middle part of the top cover 19 of the distiller.
Further, the condenser 2 is also provided with an oil-gas conduit communicated with the top side of the interior of the distiller 1, the oil-gas conduit is a pipeline connected with the middle part of the distiller top cover 19, and the oil-gas conduit is provided with an oil-gas flow meter 21.
Further, the distillation body comprises a liquid collecting cone 15 and a hollow double cone 11, the hollow double cone 11 is hollow inside, the upper side and the lower side of the hollow double cone 11 are conical, and the range of two cone angles is 20-175 degrees. The hollow double cone 11 is positioned above the liquid collecting cone 15, the upper side of the hollow double cone 11 is provided with a conical screen 12, the lower side of the hollow double cone 11 is provided with a conical ring 13, the periphery of the lower side of the liquid collecting cone 15 is communicated with the lower part of the liquid collecting cone, and the middle part of the liquid collecting cone is communicated with the condenser 2.
In this embodiment, the conical screen 12 has uniform holes, and the upper and lower sides thereof are communicated; the conical surface ring 13 is provided with a central opening, and the upper side and the lower side of the conical surface ring are communicated. After the top cover 19 of the distiller is opened, the steam to be steamed is placed at the conical surface sieve 12, the steam enters the liquid collecting cone 15 from bottom to top, then enters the hollow double cone 11 after passing through the conical surface ring 13 upwards, the steam distills the steam to be steamed through the holes of the conical surface sieve 12, and the escaped steam and volatile oil upwards enter the condenser 2 through the pipeline of the top cover 19 of the distiller.
The holes of the conical screen 12 are beneficial to uniform distribution of water vapor, increase of heat transfer area, efficient mass and heat transfer process between the water vapor and the object to be steamed, shortening of distillation time and improvement of extraction rate of volatile oil.
Furthermore, a plurality of air inlet inverted funnels 14 are arranged on the periphery of the lower side of the liquid collecting cone 15, and a filter screen 16 is arranged in the middle of the lower side of the liquid collecting cone 15. Wherein, the air inlet inverted funnel 14 is positioned at the bottom side, namely the bottom edge, of the liquid gathering cone 15, and the filter screen 16 is positioned at the inner side of the liquid gathering cone 15.
It is emphasized that the conical surface ring 13 cooperates with the liquid collecting cone 15 to collect the water vapor from the air inlet inverted funnel 14 and then disperse the water vapor upwards and steadily, so that the water vapor enters the hollow double cones 11 uniformly; on the other hand, the accumulated liquid generated by condensing the water vapor from the object to be steamed and the hollow double cone 11 at the beginning of the distillation or when the amount of the water vapor is less is gathered.
In the present embodiment, the number of the air intake inverted funnels 14 is one or more, and all of them should fall within the scope of the present embodiment. When the number of the air intake inverted funnels 14 is plural, the plural air intake inverted funnels 14 are uniformly arranged along the circumference of the liquid collecting cone 15. A screen 16 is located at the orifice of the liquid cone 15 leading to the condenser 2.
Wherein, the air inlet inverted funnel 14 is the only channel for the upward introduction of the water vapor, which effectively prevents the liquid water from entering the hollow double cone 11 and ensures the distillation effect of the water vapor. Specifically, when the water vapor in the distiller 1 moves from bottom to top, the water vapor can only be introduced into the liquid collecting cone 15 through the air inlet inverted funnel 14 and then enters the hollow double cone 11 through the liquid collecting cone 15. The inner part of the lower side of the liquid collecting cone 15 is lower than the peripheral part of the inner side of the liquid collecting cone 15, so that water vapor can easily flow upwards into the hollow double cone 11 at the peripheral part, and liquid is accumulated at the central part and then flows into the condenser 2.
More specifically, when the water vapor is introduced into the middle of the liquid collecting cone 15 from the air inlet inverted funnel 14, the flow path is in a transverse L shape, the first section is a vertical section from bottom to top of the air inlet inverted funnel 14, and the second section is a downward section from outside to inside between the hollow double cone 11 and the liquid collecting cone 15.
Illustratively, the oil-water separator 3 is provided with a gas-liquid communicating pipe 31 and a volatile oil outlet pipe 33, both ends of the gas-liquid communicating pipe 31 are respectively communicated with the top side and the bottom side of the inside of the oil-water separator 3, the gas-liquid communicating pipe 31 is connected with the water storage device 4 through a distilled water pipe 32, and the volatile oil outlet pipe 33 is communicated with the inside of the oil-water separator 3 and is higher than the distilled water pipe 32.
In the present embodiment, the oil-water separator 3 contains a liquid oil-water mixture, the lower end of the gas-liquid communication pipe 31 is communicated with the liquid level or below, and the upper end is communicated with the liquid level or above, and at this time, the liquid level in the gas-liquid communication pipe 31 is the same as the liquid level in the oil-water separator 3, and the distilled water pipe 32 is a horizontal pipe.
Further, the water receiver 4 is provided with a distillate water overflow pipe 41, and the distillate water overflow pipe 41 is communicated with the inside of the water receiver 4 through an overflow pipe upper nozzle 42, and the position of the overflow pipe upper nozzle 42 is lower than the position of the distillate water pipe 32.
In this embodiment, the horizontal distilled water pipe 32 is used as a horizontal reference surface, the upper pipe opening 34 of the oil outlet pipe at the communication position of the volatile oil outlet pipe 33 and the oil-water separator 3 is located above the horizontal reference surface, and the upper pipe opening 42 of the overflow pipe at the communication position of the distilled water overflow pipe 41 and the water reservoir 4 is located below the horizontal reference surface, so as to keep the liquid level of the oil-water separator 3 stable, so that the volatile oil after oil-water separation enters the volatile oil outlet pipe 33 in time, and the distilled water after oil-water separation enters the water reservoir 4 in time and automatically, thereby effectively avoiding the distilled water from entering the volatile oil outlet pipe 33 by mistake.
In addition, the water reservoir 4 is provided with a distillate level gauge 43, and a water pump 44 is provided on a connection path of the water reservoir 4 to the distiller 1.
In this embodiment, the water reservoir 4 is a tank structure with its top connected to the atmosphere, a distillate water level meter 43 monitors the liquid level in the water reservoir 4, and a water pump 44 provides power for the distillate water in the water reservoir 4 to the distiller 1.
Wherein, the distilled water of the water storage device 4 enters the distiller 1 through the water pump 44, which not only can recycle the distilled water, but also can recycle the trace volatile oil in the distilled water.
Illustratively, the condenser 2 is provided with a distillate pipe 22, and the distillate pipe 22 is inserted into the oil-water separator 3 and is positioned below the liquid level.
In this embodiment, the oil-water separator 3 is a tank structure with an open top, the condenser 2 is inserted from the opening of the oil-water separator 3 to the bottom through the distillate pipe 22, and the end of the distillate pipe 22 is located below the liquid level of the oil-water separator 3.
The distillate pipe 22 is inserted into the bottom of the oil-water separator 3, so that the distillate smoothly enters the oil-water separator 3, on one hand, the flow path of the distillate is prolonged, the temperature is favorably reduced, on the other hand, the disturbance of the distillate on the liquid level of the oil-water separator 3 is effectively weakened, and the oil-water separation is ensured.
Illustratively, the connection path of the distillation assembly to the condenser 2 through the liquid collecting cone 15 is provided with a water seal 23 and a liquid accumulating valve 24, only the liquid accumulating can flow through the connection path, and water vapor can not pass through the connection path, because the liquid accumulating is not generated in normal distillation, the liquid accumulating valve 24 is in a closed state.
In this embodiment, gather the honeycomb duct in the middle part of liquid awl 15 downside, communicate to condenser 2 through the honeycomb duct, set gradually water seal 23 and hydrops valve 24 along the direction of motion of hydrops for when the steam flow that the distillation began or the steam subassembly produced is less, treat that the produced hydrops of steam thing and distillation subassembly comdenstion steam flows into condenser 2, effectively prevent hollow biconical body 11 hydrops on the one hand, on the other hand is favorable to the trace volatile oil that the recycle hydrops had, improves the volatile oil extraction rate.
In this embodiment, the top of the condenser 2 is connected to the atmosphere, and a condensing pipe is disposed inside the condenser 2, the condensing pipe has a cooling water inlet 25 and a cooling water outlet 26 extending out of the condenser 2, and the condensing pipe is in a serpentine spiral shape. An oil and gas conduit provided with an oil and gas flow meter 21 is connected to the retort top 19 of the retort 1.
In addition, the distiller 1 is provided with an overpressure safety valve 110 for providing overpressure safety protection; the steam distillation device for extracting the natural product volatile oil is communicated with the atmosphere at multiple positions, so that the natural product volatile oil can be emptied in time.
In the specific operation process of the steam distillation device for extracting the volatile oil of the natural product:
opening the top cover 19 of the distiller 1, adding the substance to be distilled, uniformly spreading the substance into a cone shape to about 2/3 of the volume of the substance, and covering the top cover 19 of the distiller;
starting the water pump 44 to pump the liquid water (tap water for the first distillation and distilled water for the second distillation) in the water storage tank 4 into the distiller 1 to reach the normal scale of the water level gauge 17;
opening the liquid accumulation valve 24, detecting that the overpressure safety valve 110 is in a normal state, switching on the power supply of the electric heating rod 18, and adjusting the heating power to full load to heat until boiling to generate steam;
the water inlet of a cooling water inlet 25 of the condenser 2 is connected, and when no accumulated liquid in the observation water seal 23 flows into the condenser 2, the accumulated liquid valve 24 is closed;
adjusting the heating power of the electric heating rod 18 to stabilize the metering value of the oil-gas flow meter 21, and cooling the water vapor with volatile oil in the distiller 1 in the condenser 2 through an oil-gas guide pipe connected with the middle part of a distiller top cover 19;
the distillate cooled in the condenser 2 enters the oil-water separator 3 through a distillate pipe 22;
the distilled water after the oil-water separation in the oil-water separator 3 is in the lower layer, the distilled water enters the water receiver 4 through the gas-liquid communicating pipe 31 and the distilled water pipe 32, and the liquid level of the distilled water layer of the oil-water separator 3 is always maintained at the horizontal reference surface ab of the distilled water pipe 32 and is not influenced by the water level of the water receiver 4 because the upper pipe orifice 42 of the distilled water overflow pipe 41 of the water receiver 4 is lower than the horizontal reference surface ab where the distilled water pipe 32 is;
the volatile oil layer after oil-water separation is positioned above a horizontal reference plane ab and flows into the volatile oil outlet pipe 33 from an upper pipe orifice 34 of the oil outlet pipe, so that the natural product volatile oil is obtained;
during the distillation process, the change of the water level gauge 17 of the distiller 1 is monitored in time, and when the water level gauge 17 displays that the water level of the distiller 1 is lower than the lowest normal scale, the water pump 44 is started to pump the distilled water in the water storage device 4 into the distiller 1 to the normal scale.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The steam distillation device for extracting the volatile oil of the natural product provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A steam distillation device for extracting volatile oil of a natural product is characterized by comprising a distiller (1), a condenser (2), an oil-water separator (3) and a water storage device (4) which are connected end to end in sequence, wherein the distiller (1) is provided with a distillation assembly and a steam assembly, an object to be distilled is placed in the distiller (1), the steam assembly generates steam and leads the steam to the distillation assembly, the steam enables the volatile oil of the object to be distilled to escape through heat transfer in the distillation assembly, the condenser (2) cools the escaped volatile oil, the oil-water separator (3) separates the volatile oil and distilled water, and the water storage device (4) collects the distilled water and supplements the distiller (1).
2. The steam distillation apparatus for extracting volatile oil from natural products according to claim 1, wherein the steam assembly comprises an electric heating rod (18) and a water level gauge (17) which are arranged at the bottom side of the interior of the distiller (1), the distillation assembly comprises a distillation body which is arranged above the steam assembly, the distillation body is communicated with the lower part of the distillation body, and the upper side of the distillation body is communicated with the condenser (2).
3. The steam distillation device for extracting the volatile oil from the natural product as claimed in claim 2, wherein the distillation body comprises a liquid collecting cone (15) and a hollow double cone (11) which is hollow inside and conical at the upper and lower sides, the hollow double cone (11) is positioned above the liquid collecting cone (15), a conical surface sieve (12) is arranged at the upper side of the hollow double cone (11), a conical surface ring (13) is arranged at the lower side of the hollow double cone, the periphery of the lower side of the liquid collecting cone (15) is communicated with the lower side of the liquid collecting cone, and the middle of the lower side of the liquid collecting cone is communicated with the condenser (2).
4. The steam distillation device for extracting the volatile oil of the natural product as claimed in claim 3, wherein the periphery of the lower side of the liquid gathering cone (15) is provided with a plurality of air inlet inverted funnels (14), and the middle of the lower side of the liquid gathering cone (15) is provided with a filter screen (16).
5. The steam distillation device for extracting the volatile oil of the natural product as claimed in claim 3, wherein a water seal (23) and a liquid loading valve (24) are arranged on a connection path of the distillation assembly to the condenser (2) through the liquid accumulation cone (15).
6. The steam distillation apparatus for extracting volatile oil from natural products according to any of claims 1 to 5, wherein the condenser (2) is provided with a distillate pipe (22), and the distillate pipe (22) is inserted into the oil-water separator (3) and is positioned below the liquid level.
7. The steam distillation device for extracting the volatile oil of the natural product as claimed in claim 6, wherein the condenser (2) is further provided with an oil-gas conduit communicated with the top side of the interior of the distiller (1), and the oil-gas conduit is provided with an oil-gas flow meter (21).
8. The steam distillation apparatus for extracting volatile oil from natural products according to any one of claims 1 to 5, wherein the oil-water separator (3) is provided with a gas-liquid communicating pipe (31) and a volatile oil outlet pipe (33), both ends of the gas-liquid communicating pipe (31) are respectively communicated with the inner top side and the inner bottom side of the oil-water separator (3), the gas-liquid communicating pipe (31) is connected with the water reservoir (4) through a distilled water pipe (32), and the volatile oil outlet pipe (33) is communicated with the inside of the oil-water separator (3) and is higher than the distilled water pipe (32).
9. The steam distillation apparatus for extracting volatile oil from natural products according to claim 8, wherein said water reservoir (4) is provided with a distillate water overflow pipe (41), said distillate water overflow pipe (41) communicating with the inside of said water reservoir (4) through an overflow pipe upper nozzle (42), said overflow pipe upper nozzle (42) being located at a position lower than the position of said distillate water pipe (32).
10. Steam distillation plant for the extraction of essential oils of natural products according to claim 9, characterized in that said water reservoir (4) is also provided with a distillate level gauge (43), and in that the connection path of said reservoir (4) to said distiller (1) is provided with a water pump (44).
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