Origanum oil extraction and purification equipment

Abstract

The utility model discloses origanum oil extraction and purification equipment, which comprises a distillation kettle and a water-oil separation component communicated and mounted at the top of the distillation kettle, the top of the water-oil separation component is provided with a condensation return pipe, and the side surface of the distillation kettle is communicated with an oil-water separation tank. According to the utility model, high-heat steam is guided into the annular flow guide frame through the steam flow guide assembly, and is uniformly sprayed from multiple points of the annular flow guide frame, so that steam distillation in the distillation kettle is relatively uniform and stable, volatile matters after distillation in the distillation kettle are extracted by the water-oil separation assembly and the condensation return pipe, and water-oil separation and extraction purification are carried out by the oil-water separation tank; the cleaning and stirring assembly can clean and scrape off the inner wall and the bottom of the distillation still after being self-driven and clean and scrape off residues on the surface of the annular flow guide frame at the same time, so that the device is uniform in steam high-temperature flow guide, the loss of an extract is reduced, the extraction and purification effects are good, self-cleaning is convenient, the tank body can be kept clean, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of rectification and purification, in particular to an extraction and purification device for origanum oil. Background Art

[0002] The extraction and purification of origanum oil is a process of extracting active ingredients from origanum plants through solvent extraction or supercritical fluid technology, and refining them into high-purity essential oils through processes such as distillation and filtration. The core equipment of this process needs to have the functions of extraction, separation, and purification. Its working temperature needs to be precisely controlled at 40-60°C to retain thermosensitive active ingredients such as carvacrol. At the same time, the equipment is required to have good sealing performance to avoid the loss of volatile components. When extracting and purifying origanum oil, it is usually necessary to keep the temperature in the tank uniform and stable to improve the quality of origanum oil extraction.

[0003] Traditional extraction tanks use a single-point heating method for steam heat conduction. Usually, a single tank directly injects high-temperature steam into the tank interior, resulting in obvious uneven heat conduction problems: the axial temperature difference of the tank can reach more than 15°C, leading to thermal decomposition of essential oil components in local overheating areas (especially near the heating source). The multi-point uniform heating ability of the tank is relatively insufficient, causing the carvacrol content to decrease by 12%-15%. This temperature gradient easily causes the accumulation of coking substances on the tank wall, and manual cleaning is required to stop the machine every 20 batches of production, seriously affecting the production continuity and product consistency indicators. The self-cleaning ability of the tank is relatively insufficient, and manual cleaning is time-consuming and laborious, affecting subsequent production and purification. Therefore, we propose an extraction and purification device for origanum oil to solve the above problems. Content of the Utility Model

[0004] In response to the problems raised, the utility model provides an extraction and purification device for origanum oil to solve the above problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An extraction and purification device for origanum oil, comprising a distillation kettle and a water-oil separation assembly connected and installed at the top of the distillation kettle. A condensation reflux pipe is provided at the top of the water-oil separation assembly;

[0007] An oil-water separation tank is connected and arranged on the side of the distillation kettle. A steam diversion assembly and a cleaning and stirring assembly are provided at the bottom of the distillation kettle. An annular diversion rack connected to the steam diversion assembly is arranged inside the distillation kettle;

[0008] Among them, the top of the cleaning and stirring assembly is located inside the distillation kettle and matches the structure of the annular diversion rack. A plurality of steam ejection ends are evenly arranged at the edge of the annular diversion rack.

[0009] Preferably, the water-oil separation component includes a liquid storage outer cylinder and an anti-backflow inner pipe. The liquid storage outer cylinder is installed and communicated with the top of the distillation kettle. The anti-backflow inner pipe is installed at the bottom inside the liquid storage outer cylinder in an inverted funnel shape. The condensation reflux pipe and the oil-water separation tank are both communicated with the inside of the liquid storage outer cylinder.

[0010] Preferably, the condensation reflux pipe includes a main condensation water pipe, a first reflux pipe, and a second reflux pipe. The main condensation water pipe is installed directly above the water-oil separation component. The tops of the first reflux pipe and the second reflux pipe are respectively communicated with both ends of the main condensation water pipe. Both the first reflux pipe and the second reflux pipe are communicated with the water-oil separation component.

[0011] Preferably, both ends of the first reflux pipe are respectively connected to the top end of the main condensation water pipe and the bottom of the side of the water-oil separation component. Both ends of the second reflux pipe are respectively connected to the bottom end of the main condensation water pipe and the top of the side of the water-oil separation component.

[0012] Preferably, purification outlet pipes and oil-water diversion pipes are correspondingly arranged on both sides of the oil-water separation tank. The oil-water diversion pipe is communicated between the oil-water separation tank and the distillation kettle. The purification outlet pipe is arranged on the side of the oil-water separation tank away from the distillation kettle.

[0013] Preferably, the steam diversion component includes a steam diversion pipe and a generator connection pipe. The top of the steam diversion pipe penetrates into the inside of the distillation kettle and is fixedly connected with an annular diversion frame. The bottom of the steam diversion pipe extends out of the distillation kettle and is connected with the generator connection pipe.

[0014] Preferably, the cleaning and stirring component includes a driving motor, a driving column, inner wall cleaning blades, and spray pipe cleaning pieces. The driving motor is installed at the bottom of the distillation kettle. The driving column is rotatably connected to the inner bottom of the distillation kettle. The bottom of the driving column extends out of the distillation kettle and is fixedly connected to the output end of the driving motor. Both the inner wall cleaning blades and the spray pipe cleaning pieces are installed on the driving column. The inner wall cleaning blades abut against the inner wall of the distillation kettle. The spray pipe cleaning pieces are sleeved on the annular diversion frame in a C shape.

[0015] Preferably, a sewage discharge pipe is arranged on the side of the bottom of the distillation kettle. A slag discharge port is arranged on the front of the distillation kettle. A material loading port is arranged above the side of the distillation kettle. A thermometer is correspondingly arranged on the top of the distillation kettle.

[0016] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0017] 1. For this oregano oil extraction and purification equipment, by setting up a steam diversion component, it can be externally connected to a steam generator to divert high-temperature steam into the annular diversion frame. There are multiple steam ejection ends distributed in a ring shape on the annular diversion frame. The high-temperature steam can be evenly sprayed in a ring shape into the distillation kettle from multiple steam ejection ends, increasing from single-point high-temperature ejection to multi-point uniform high-temperature ejection, making the steam distillation in the distillation kettle more uniform and stable, improving the uniformity of steam generation in the tank, reducing the accumulation of coking substances on the tank wall after uniform heating, improving the extraction quality, and reducing the loss of extracts.

[0018] 2. For this oregano oil extraction and purification equipment, by providing a cleaning and stirring component at the bottom of the distillation kettle, running the drive motor can drive the drive column to rotate, driving two inner wall cleaning blades and a spray pipe cleaning blade. The two inner wall cleaning blades respectively clean and scrape the inner wall and bottom of the distillation kettle, and the spray pipe cleaning blade can clean and scrape the residues on the surface of the annular diversion frame. While cleaning, the inner wall cleaning blades can assist in discharging the slag, providing convenient self-cleaning. Description of the Drawings

[0019] Figure 1 It is a front three-dimensional schematic diagram of an oregano oil extraction and purification equipment proposed by the present utility model;

[0020] Figure 2 It is a front slope three-dimensional schematic diagram of an oregano oil extraction and purification equipment proposed by the present utility model;

[0021] Figure 3 It is a top three-dimensional schematic diagram of an oregano oil extraction and purification equipment proposed by the present utility model;

[0022] Figure 4 It is a bottom three-dimensional schematic diagram of an oregano oil extraction and purification equipment proposed by the present utility model;

[0023] Figure 5 It is a front three-dimensional schematic diagram of the connection structure between the liquid storage outer cylinder and the anti-counterflow inner pipe of the present utility model;

[0024] Figure 6 It is a front three-dimensional schematic diagram of the connection structure between the spray pipe cleaning blade and the annular diversion frame of the present utility model.

[0025] In the figure: 1. Distillation kettle; 11. Drain pipe; 12. Slag discharge port; 13. Material loading port; 14. Thermometer; 2. Water-oil separation component; 21. Outer liquid storage cylinder; 22. Anti-backflow inner pipe; 3. Condensation reflux pipe; 31. Main condensation water pipe; 32. First reflux pipe; 33. Second reflux pipe; 4. Oil-water separation tank; 41. Purification outlet pipe; 42. Oil-water diversion pipe; 5. Steam diversion component; 51. Steam diversion pipe; 52. Generator connection pipe; 6. Cleaning and stirring component; 61. Driving motor; 62. Driving column; 63. Inner wall cleaning blade; 64. Spray pipe cleaning piece; 7. Annular diversion frame; 71. Steam ejection end. Detailed implementation mode

[0026] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0027] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention may be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the specific embodiments disclosed in the following specification.

[0028] Please refer to Figures 1-6 , an oregano oil extraction and purification device, comprising a distillation kettle 1 and a water-oil separation component 2 connected and installed at the top of the distillation kettle 1, and a condensation reflux pipe 3 is arranged at the top of the water-oil separation component 2;

[0029] An oil-water separation tank 4 is connected and arranged on the side of the distillation kettle 1, a steam diversion component 5 and a cleaning and stirring component 6 are arranged at the bottom of the distillation kettle 1, and an annular diversion frame 7 connected to the steam diversion component 5 is arranged inside the distillation kettle 1;

[0030] Among them, the top of the cleaning and stirring component 6 is located inside the distillation kettle 1 and matches the structure of the annular diversion frame 7, and a plurality of steam ejection ends 71 are evenly arranged at the edge of the annular diversion frame 7;

[0031] Beneficial effects to be expressed by this solution: The steam diversion assembly 5 can be externally connected to a steam generator to divert high-temperature steam into the annular diversion frame 7. There are multiple steam ejection ends 71 distributed in a ring shape on the annular diversion frame 7. The high-temperature steam can be evenly sprayed into the distillation kettle 1 in a ring shape from the multiple steam ejection ends 71, increasing from single-point high-temperature ejection to multi-point uniform high-temperature ejection, making the steam distillation in the distillation kettle 1 more uniform and stable, improving the uniformity of steam generation in the tank body, reducing the accumulation of coking substances on the tank wall after uniform heating, improving the cleaning convenience. The volatiles after distillation in the distillation kettle 1 can be diverted into the water-oil separation assembly 2. The components volatilized by rectification are diverted by the condensation return pipe 3 to the gap inside the water-oil separation assembly 2 for extraction and storage. The water-oil separation and extraction purification are carried out by the oil-water separation tank 4, with high purification accuracy. A cleaning stirring assembly 6 is provided at the bottom of the distillation kettle 1. After self-driving, the cleaning stirring assembly 6 can clean and scrape the inner wall and bottom of the distillation kettle 1, and at the same time clean and scrape the residues on the surface of the annular diversion frame 7, making the steam high-temperature diversion of the device uniform, reducing the loss of extracts, having good extraction and purification effects, and being self-cleaning and convenient. The tank body can be kept clean and is convenient to use.

[0032] Further, the water-oil separation assembly 2 includes a liquid storage outer cylinder 21 and an anti-backflow inner pipe 22. The liquid storage outer cylinder 21 is installed and connected to the top of the distillation kettle 1. The anti-backflow inner pipe 22 is installed in an inverted funnel shape at the bottom inside the liquid storage outer cylinder 21. Both the condensation return pipe 3 and the oil-water separation tank 4 are connected to the inside of the liquid storage outer cylinder 21.

[0033] Specifically, the water-oil separation assembly 2 includes a liquid storage outer cylinder 21 and an anti-backflow inner pipe 22. The inside of the anti-backflow inner pipe 22 is hollow and can conduct high-temperature diversion, stably diverting the volatiles into the condensation return pipe 3. Both ends of the condensation return pipe 3 can introduce volatiles, and then the volatiles are circulated and diverted by the condensation return pipe 3 to the gap between the liquid storage outer cylinder 21 and the anti-backflow inner pipe 22 for extraction and storage. The gap between the liquid storage outer cylinder 21 and the anti-backflow inner pipe 22 can be used for storage. After the oil and water drip, the water-oil separation and extraction purification are carried out by the oil-water separation tank 4, with high purification accuracy.

[0034] Further, the condensation return pipe 3 includes a main condensation water pipe 31, a first return pipe 32, and a second return pipe 33. The main condensation water pipe 31 is installed above the water-oil separation assembly 2. The tops of the first return pipe 32 and the second return pipe 33 are respectively connected to both ends of the main condensation water pipe 31. Both the first return pipe 32 and the second return pipe 33 are connected to the water-oil separation assembly 2.

[0035] Specifically, the first return pipe 32 and the second return pipe 33 are respectively connected to both ends of the main condensate pipe 31. The bottoms of the two first return pipes 32 and the second return pipe 33 are respectively connected to the bottom inside the liquid storage outer cylinder 21 and the gap between the liquid storage outer cylinder 21 and the anti-backflow inner pipe 22, enabling both the first return pipe 32 and the second return pipe 33 to carry out volatilization and extraction operations. The main condensate pipe 31 conducts condensation, and then it flows back to the gap between the liquid storage outer cylinder 21 and the anti-backflow inner pipe 22 through the second return pipe 33, which is suitable, stable, and convenient.

[0036] Furthermore, the two ends of the first return pipe 32 are respectively connected to the top end of the main condensate pipe 31 and the bottom of the side of the water-oil separation assembly 2, and the two ends of the second return pipe 33 are respectively connected to the bottom end of the main condensate pipe 31 and the top of the side of the water-oil separation assembly 2.

[0037] Specifically, the two ends of the first return pipe 32 are respectively connected to the top end of the main condensate pipe 31 and the bottom of the side of the water-oil separation assembly 2. The volatiles after distillation in the distillation kettle 1 can be guided to the water-oil separation assembly 2. The components volatilized by rectification are guided by the condensation return pipe 3, and are circulated and guided by the condensation return pipe 3 to the gap between the liquid storage outer cylinder 21 and the anti-backflow inner pipe 22 for extraction and storage. After the oil and water drop, it is convenient for extraction.

[0038] Furthermore, purification outlet pipes 41 and oil-water diversion pipes 42 are correspondingly arranged on both sides of the oil-water separation tank 4. The oil-water diversion pipe 42 is connected between the oil-water separation tank 4 and the distillation kettle 1, and the purification outlet pipe 41 is arranged on the side of the oil-water separation tank 4 away from the distillation kettle 1.

[0039] Specifically, purification outlet pipes 41 and oil-water diversion pipes 42 are correspondingly arranged on both sides of the oil-water separation tank 4. The oil-water liquid in the water-oil separation assembly 2 can be guided to the oil-water separation tank 4 through the oil-water diversion pipe 42 for oil-water separation and extraction, and then purified and discharged through the purification outlet pipe 41, which is stable, convenient for purification and extraction.

[0040] Furthermore, the steam diversion assembly 5 includes a steam diversion pipe 51 and a generator connection pipe 52. The top of the steam diversion pipe 51 penetrates into the interior of the distillation kettle 1 and is fixedly connected with an annular diversion bracket 7, and the bottom of the steam diversion pipe 51 extends out of the distillation kettle 1 and is connected to the generator connection pipe 52.

[0041] Specifically, the steam diversion assembly 5 includes a steam diversion pipe 51 and a generator connection pipe 52. The generator connection pipe 52 can be externally connected to a steam generator. After guiding high-temperature steam into the generator connection pipe 52, it is conducted to the steam diversion pipe 51, and then conducted to the interior of the annular diversion bracket 7 by the steam diversion pipe 51, and evenly sprayed inside the distillation kettle 1, which is suitable and convenient.

[0042] Further, the cleaning and stirring assembly 6 includes a driving motor 61, a driving column 62, inner wall cleaning blades 63 and a spray pipe cleaning piece 64. The driving motor 61 is installed at the bottom of the distillation kettle 1. The driving column 62 is rotatably connected to the inner bottom of the distillation kettle 1. The bottom of the driving column 62 extends out of the distillation kettle 1 and is fixedly connected to the output end of the driving motor 61. The inner wall cleaning blades 63 and the spray pipe cleaning piece 64 are both installed on the driving column 62. The inner wall cleaning blades 63 abut against the inner wall of the distillation kettle 1. The spray pipe cleaning piece 64 is sleeved on the annular diversion frame 7 in a C shape;

[0043] Specifically, operating the driving motor 61 can drive the driving column 62 to rotate. When the driving column 62 rotates, it can drive two inner wall cleaning blades 63 and a spray pipe cleaning piece 64. After being driven to rotate, the two inner wall cleaning blades 63 respectively clean and scrape the inner wall and the bottom of the distillation kettle 1. After being driven, the spray pipe cleaning piece 64 can clean and scrape the residues on the surface of the annular diversion frame 7. While cleaning, the inner wall cleaning blades 63 can assist in pushing the sewage pipe 11 and the slag discharge port 12 to discharge the slag material, which is convenient for self-cleaning.

[0044] Further, a sewage pipe 11 is provided on the side of the bottom of the distillation kettle 1. A slag discharge port 12 is provided on the front of the distillation kettle 1. A material loading port 13 is provided above the side of the distillation kettle 1. A thermometer 14 is correspondingly provided at the top of the distillation kettle 1;

[0045] Specifically, the oregano oil enters the distillation kettle 1 through the material loading port 13. The slag discharge port 12 and the sewage pipe 11 can respectively discharge sewage and slag, which is convenient for discharging dirt. The thermometer 14 plays a role in temperature measurement and monitoring to prevent damage caused by too high temperature.

[0046] The usage method and working principle of this device:

[0047] By setting the distillation kettle 1, the oregano oil can be distilled and extracted and then purified. The oregano oil enters the distillation kettle 1 through the material loading port 13. The steam diversion assembly 5 can be externally connected to a steam generator to divert high-temperature steam to the inside of the distillation kettle 1, and then evenly sprayed by the annular diversion frame 7 inside the distillation kettle 1. There are a plurality of steam ejection ends 71 distributed in a ring shape on the annular diversion frame 7. The high-temperature steam can be evenly sprayed in a ring shape from the plurality of steam ejection ends 71 into the distillation kettle 1, increasing from single-point high-temperature eruption to multi-point uniform high-temperature eruption, making the steam distillation in the distillation kettle 1 more uniform and stable, improving the uniformity of steam generation in the tank, improving the extraction quality, reducing the loss of the extract, reducing the accumulation of coking substances on the tank wall after uniform heating, and reducing the difficulty of self-cleaning in the later stage;

[0048] A water-oil separation component 2 is provided at the top of the distillation kettle 1. The volatiles after distillation in the distillation kettle 1 can be diverted into the water-oil separation component 2. The components volatilized by rectification are diverted by the condensation reflux pipe 3 and circulated through the condensation reflux pipe 3 to the gap between the liquid storage outer cylinder 21 and the anti-counterflow inner pipe 22 for extraction and storage. After the oil and water drop, the water-oil separation and extraction and purification can be carried out in the oil-water separation tank 4, and the purification accuracy is high;

[0049] A cleaning and stirring component 6 is provided at the bottom of the distillation kettle 1. The cleaning and stirring component 6 includes a driving motor 61, a driving column 62, an inner wall cleaning blade 63 and a spray pipe cleaning piece 64. Operating the driving motor 61 can drive the driving column 62 to rotate. When the driving column 62 rotates, it can drive two inner wall cleaning blades 63 and a spray pipe cleaning piece 64. After the two inner wall cleaning blades 63 are driven to rotate, they respectively clean and scrape the inner wall and the bottom of the distillation kettle 1. After the spray pipe cleaning piece 64 is driven, it can clean and scrape the residues on the surface of the annular diversion frame 7. While cleaning, the inner wall cleaning blade 63 can assist in pushing the sewage pipe 11 and the slag discharge port 12 to discharge the slag, which is convenient for self-cleaning;

[0050] The device enables uniform high-temperature diversion of steam, reduces the loss of extracts, has good extraction and purification effects, is convenient for self-cleaning, the tank body can be kept clean, and is convenient for use.

[0051] The above is only the preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. An oregano oil extraction and purification device, characterized in that: It includes a distillation kettle (1) and a water-oil separation component (2) connected and installed at the top of the distillation kettle (1). A condensation reflux pipe (3) is provided at the top of the water-oil separation component (2). An oil-water separation tank (4) is connected and arranged on the side of the distillation kettle (1). A steam diversion component (5) and a cleaning and stirring component (6) are provided at the bottom of the distillation kettle (1). An annular diversion frame (7) connected to the steam diversion component (5) is arranged inside the distillation kettle (1). Among them, the top of the cleaning and stirring component (6) is located inside the distillation kettle (1) and matches the structure of the annular diversion frame (7). A plurality of steam ejection ends (71) are evenly arranged at the edge of the annular diversion frame (7).

2. The oregano oil extraction and purification equipment according to claim 1, characterized in that: The water-oil separation component (2) includes a liquid storage outer cylinder (21) and an anti-backflow inner pipe (22). The liquid storage outer cylinder (21) is installed and connected to the top of the distillation kettle (1). The anti-backflow inner pipe (22) is installed in an inverted funnel shape at the bottom inside the liquid storage outer cylinder (21). The condensation reflux pipe (3) and the oil-water separation tank (4) are both connected to the inside of the liquid storage outer cylinder (21).

3. An oregano oil extraction and purification device according to claim 1, characterized in that: The condensation reflux pipe (3) includes a main condensation water pipe (31), a first reflux pipe (32) and a second reflux pipe (33). The main condensation water pipe (31) is installed directly above the water-oil separation component (2). The tops of the first reflux pipe (32) and the second reflux pipe (33) are respectively connected to both ends of the main condensation water pipe (31). The first reflux pipe (32) and the second reflux pipe (33) are both connected to the water-oil separation component (2).

4. The oregano oil extraction and purification equipment according to claim 3, characterized in that: Both ends of the first reflux pipe (32) are respectively connected to the top end of the main condensation water pipe (31) and the bottom of the side of the water-oil separation component (2). Both ends of the second reflux pipe (33) are respectively connected to the bottom end of the main condensation water pipe (31) and the top of the side of the water-oil separation component (2).

5. An oregano oil extraction and purification device according to claim 1, characterized in that: Purification outlet pipes (41) and oil-water diversion pipes (42) are correspondingly provided on both sides of the oil-water separation tank (4). The oil-water diversion pipe (42) is connected between the oil-water separation tank (4) and the distillation kettle (1). The purification outlet pipe (41) is arranged on the side of the oil-water separation tank (4) away from the distillation kettle (1).

6. The oregano oil extraction and purification equipment according to claim 1, characterized in that: The steam diversion component (5) includes a steam diversion pipe (51) and a generator connection pipe (52). The top of the steam diversion pipe (51) penetrates into the inside of the distillation kettle (1) and is fixedly connected to the annular diversion frame (7). The bottom of the steam diversion pipe (51) extends out of the distillation kettle (1) and is connected to the generator connection pipe (52).

7. An oregano oil extraction and purification device according to claim 1, characterized in that: The cleaning and stirring assembly (6) includes a driving motor (61), a driving column (62), inner wall cleaning blades (63) and spray pipe cleaning pieces (64). The driving motor (61) is installed at the bottom of the distillation kettle (1). The driving column (62) is rotatably connected to the inner bottom of the distillation kettle (1). The bottom of the driving column (62) extends out of the distillation kettle (1) and is fixedly connected to the output end of the driving motor (61). The inner wall cleaning blades (63) and the spray pipe cleaning pieces (64) are both installed on the driving column (62). The inner wall cleaning blades (63) abut against the inner wall of the distillation kettle (1). The spray pipe cleaning pieces (64) are sleeved on the annular guide frame (7) in a C shape.

8. The oregano oil extraction and purification equipment according to claim 1, characterized in that: A sewage discharge pipe (11) is provided on the side of the bottom of the distillation kettle (1). A slag discharge port (12) is arranged on the front of the distillation kettle (1). A material loading port (13) is provided above the side of the distillation kettle (1). A thermometer (14) is correspondingly arranged at the top of the distillation kettle (1).

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