Extraction method of artemisia apiacea oil volatile oil

Abstract

The invention discloses an extraction method of artemisia apiacea oil volatile oil, and relates to the technical field of artemisia apiacea volatile oil, after artemisia apiacea oil is dehydrated by anhydrous sodium sulfate, an oil body and sodium sulfate respectively enter a concentration box and a water removal box, and water bath heating is simultaneously carried out to respectively carry out vacuum concentration and dehydration operation on the oil body and the sodium sulfate; sodium sulfate dehydration and vacuum concentration are carried out at the same time, the overall time is not increased, the production efficiency is not reduced, meanwhile, the sodium sulfate can return to the drying chamber to be reused by rotating the box body for dehydration, the sodium sulfate does not need to be transferred back and forth in each device, and waste of the sodium sulfate in the transfer process is avoided. When remaining oil in the concentration box is discharged, hot water in the water bath box flows back into the concentration box to press a square scraper to descend, oil adhered to the inner wall is scraped off and discharged along with the oil, meanwhile, the backward flowing hot water can clean the concentration chamber, the cleaning effect on the concentration box is achieved, it is guaranteed that the interior of the concentration box is clean, and next use is not affected.

Description

Technical Field

[0001] The invention relates to the technical field of artemisia annua volatile oil, in particular to a method for extracting artemisia annua volatile oil. Background Art

[0002] Artemisia annua, whose scientific name is Artemisia annua, belongs to the genus Artemisia of the family Asteraceae, and is a traditional Chinese medicine with high medicinal value. It is cold in nature, bitter and pungent in taste, enters the liver, and has a special aroma. It has the effects of clearing away heat and relieving summer heat, removing steaming, and stopping abuse. It is mainly used for fever caused by summer heat evil, fever caused by yin deficiency, night heat and morning coolness, bone steaming and tuberculosis, malaria cold and heat, damp-heat jaundice and other symptoms. Artemisia annua volatile oil is one of the main active ingredients of Artemisia annua, with a content of 0.3%-2.5%. It is a light yellow transparent liquid with a strong aromatic smell. It has antibacterial, antiasthmatic, antipyretic, and antitussive pharmacological effects. It can be used clinically to treat skin fungal diseases, chronic bronchitis, upper respiratory tract infections, etc. For example, the patent website discloses a method for extracting Artemisia annua volatile oil (publication number: CN104073361A). This extraction method is to first dry, crush and soak Artemisia annua, extract it under microwave power, then filter and extract it, and finally dry and dehydrate it with anhydrous sodium sulfate and concentrate it under reduced pressure to obtain Artemisia annua volatile oil (i.e. Artemisia annua oil volatile oil). However, in the actual operation process, during the drying and dehydration process, anhydrous sodium sulfate will absorb water in the oil, and then the sodium sulfate will contain water. In order to use it next time, it needs to be distilled and dehydrated, and then a subsequent reduced pressure concentration device is needed to dehydrate it. However, this requires adding sodium sulfate dehydration time to the original time, thereby increasing the time consumption of the entire step and reducing the production efficiency. In order to improve production efficiency, the existing technology can purchase a professional dehydration device to dehydrate it, but purchasing a professional dehydration device not only increases the economic cost, but also uses a professional dehydration device and a concentration device to dehydrate it. Sodium sulfate needs to be put in and then poured out, and in order not to affect the next use, the device needs to be cleaned, which is very troublesome and increases the workload of the staff. At the same time, in the process of reducing the pressure and concentrating the oil, after the Artemisia annua volatile oil is concentrated and leaves, some of the Artemisia annua oil raw material oil bodies remain in the device. These substances remain in the device and need to be cleaned. At the same time, some of the oil bodies may adhere to the inner wall of the device, which requires manual cleaning by the staff, which is very troublesome. Therefore, the technicians in this field have proposed a method for extracting Artemisia annua volatile oil. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a method for extracting volatile oil from artemisia annua oil. After the artemisia annua oil is dehydrated with anhydrous sodium sulfate, the oil body and sodium sulfate enter a concentration box and a dewatering tank respectively, and are simultaneously heated in a water bath to perform decompression concentration and dehydration operations on the two respectively. After that, the box body rotates to dehydrate the sodium sulfate and returns to the drying chamber. When the remaining oil body in the concentration box is discharged, the hot water in the water bath box is poured back into the concentration box to press the square scraper down to scrape the oil adhered to the inner wall and discharge it with the oil body. At the same time, the poured hot water can clean the concentration chamber to solve the problems in the above background.

[0004] To achieve the above objectives, the present invention is implemented through the following technical scheme: a method for extracting volatile oil from artemisia annua oil, after the artemisia annua oil is dehydrated with anhydrous sodium sulfate, the oil body and sodium sulfate enter a concentration box and a dehydration tank respectively, and are simultaneously heated in a water bath to perform reduced pressure concentration and dehydration operations on the two respectively, after which the box body rotates to dehydrate the sodium sulfate and returns to the drying chamber, and when the remaining oil body in the concentration box is discharged, the hot water in the water bath box is poured back into the concentration box to press the square scraper down to scrape the oil adhering to the inner wall and discharge it with the oil body, and at the same time, the poured hot water can clean the concentration chamber.

[0005] The method is implemented by using an artemisia annua volatile oil extraction device, which includes a box mechanism, a feeding mechanism, a rotating mechanism and other components. The box mechanism is used for dehydration and drying of the artemisia annua oil material and evaporation and concentration operations. The feeding mechanism is used for moving the liquid material in each chamber in the box mechanism. The rotating mechanism is installed outside the box mechanism and is used to drive the box mechanism to rotate. As a further technical solution of the present invention, the box body mechanism includes a box body, a drying chamber is opened inside the box body, a dewatering chamber is opened inside the box body directly below the drying chamber, a concentration box is installed at the center of the dewatering chamber, a central cavity is opened inside the box body between the drying chamber and the dewatering chamber, a feed pipe connected to the drying chamber is installed at the center of the upper surface of the box body, and a pipe cover is provided at the port of the feed pipe.

[0006] As a further technical solution of the present invention, a water bath is provided at the bottom of the box body, a pressure relief valve is installed on the upper surface of the water bath, a heating plate is installed on the inner bottom surface of the water bath, a water inlet pipe is installed on the upper surface of the water bath on one side of the box body, a first solenoid valve is installed on the water inlet pipe, a steam pipe connected to the dewatering chamber is installed on the side of the box body, a second solenoid valve is installed on the steam pipe, a concentrator tube extending to the outside of the box body is installed on the side of the concentrator box near the top, a vacuum pump connected to the concentrator tube pipeline is installed on the side of the box body, and a third solenoid valve is provided on the pipeline connecting the vacuum pump and the concentrator tube.

[0007] As a further technical solution of the present invention, a backflow pipe extending into the water bath and having a closed upper end is installed on the inner bottom surface of the concentration tank, a baffle groove is opened at the upper end of the backflow pipe, a plurality of evenly distributed circular holes are opened on the inner bottom surface of the baffle groove, a baffle plate which is adapted to the baffle plate and blocks all the circular holes is provided on the inner wall of the baffle plate groove, an extension rod extending into the backflow pipe is installed at the center of the lower surface of the baffle plate, a limiting plate is installed at the lower end of the extension rod, and a square scraper which is adapted to the baffle plate is slidably provided on the inner bottom of the concentration tank.

[0008] As a further technical solution of the present invention, the feeding mechanism includes a first feeding pipe installed at the center of the bottom surface of the drying chamber and extending into the central cavity, a first piston matching with the first feeding pipe is slidably arranged at the upper port of the first feeding pipe, an electric push rod with a telescopic arm extending into the first feeding pipe and fixedly connected to the first piston is installed on the inner bottom surface of the central cavity directly below the first feeding pipe, and two feeding pipes whose lower ends are connected to the concentration tank are correspondingly installed on the side of the first feeding pipe below the first piston.

[0009] As a further technical solution of the present invention, two second conveying pipes extending into the central cavity are installed on the inner bottom surface of the drying chamber corresponding to the outside of the first conveying pipe, each of the second conveying pipes is installed with a partition, and a connecting pipe with a lower end extending into the dewatering chamber is installed in the center of the upper surface of each partition, and a second piston matching it is arranged above the partition in each of the second conveying pipes, and a plurality of evenly distributed through holes are opened on the upper surface of each of the second pistons, and an L-shaped plate extending to the outside of the second conveying pipe is installed on the lower surface of each through hole, and a horizontal plate is installed on the side of the telescopic arm of the electric push rod below each L-shaped plate.

[0010] As a further technical solution of the present invention, the rotating mechanism includes a bottom plate arranged directly below the water bath, and two vertical plates are installed on the upper surface of the bottom plate corresponding to the sides of the box body, and rotating shafts rotatably connected to the vertical plates are installed on both sides of the box body, and each end of the rotating shaft passes through the vertical plate and is installed with a gear, and a hydraulic rod is installed on one side of each vertical plate on the upper surface of the bottom plate, and a rack meshing with a nearby gear is installed on the upper end of each hydraulic rod.

[0011] Specifically include the following steps: S1. Open the cap of the feed pipe, add the extracted artemisia oil raw material into the drying chamber, then add anhydrous sodium sulfate into the drying chamber, the sodium sulfate absorbs water in the artemisia oil raw material, and dries and dehydrates it, then the artemisia oil raw material and sodium sulfate are separated, and the sodium sulfate is at the bottom; S2, the electric push rod extends to drive the first piston and the cross plate to rise, and the two rising cross plates drive the two second pistons to rise through the two L-shaped plates until the second delivery pipe limits the cross plate of the L-shaped plate and stops rising. At this time, the partition is released from the sealing of the through holes on the second pistons, and the sodium sulfate at the bottom of the drying chamber enters the second delivery pipe through each through hole, and then enters the dewatering chamber through the connecting pipe. The staff observes through the box observation window. When the sodium sulfate completely enters the dewatering chamber, the electric push rod is controlled to shorten, and the two second pistons descend by their own gravity to contact the partition, and each partition is used to block the through holes on the corresponding second piston; S3, the electric push rod is shortened to drive the first piston down until the first piston is down to the bottom of the connection port between the feed pipe and the first delivery pipe, and then the artemisia annua oil raw material left in the drying chamber enters the first delivery pipe, and then enters the concentration box through the two feed pipes. When the artemisia annua oil raw material completely enters the concentration box, the feed pipe is extended to drive the first piston to restore its position; S4, installing the collecting container at the end of the concentrating tube, then running the vacuum pump to reduce the pressure in the concentrating box, reducing the boiling point of the Artemisia annua volatile oil to 100 degrees, then closing the third solenoid valve, opening the first solenoid valve to inject water into the water bath through the water inlet pipe until it is full, then energizing the heating plate to heat the water in the water bath, and heating the Artemisia annua oil raw material in the concentrating box and the sodium sulfate in the dehydration chamber in a water bath, the Artemisia annua volatile oil in the Artemisia annua oil raw material evaporates and enters the collecting container through the concentrating tube and is liquefied into Artemisia annua volatile oil, and at the same time, the sodium sulfate in the dehydration chamber is heated, and the water in the sodium sulfate evaporates and is discharged through the steam pipe, and the sodium sulfate is dehydrated; S5. When the concentration of the Artemisia annua volatile oil is completed, the pressure in the concentration box is restored, the collection container is removed, the second solenoid valve is closed, the two hydraulic rods are shortened to drive the rack to descend, and the box body is driven to rotate through two gears and two rotating shafts until the box body rotates 180 degrees. At this time, the dehydration chamber is at the top and the drying chamber is at the bottom; S6, the two second pistons descend by their own gravity until the L-shaped plate limits them, and then the dehydrated sodium sulfate in the dehydration chamber enters the drying chamber through the connecting pipe, the second delivery pipe and the through hole and can be used again. At the same time, the baffle will also descend by gravity until it is limited by the limit plate, and then the hot water in the water bath tank is poured into the concentration tank through the backflow pipe and the round hole, pressing the square scraper to descend, and the remaining artemisia annua oil raw material oil in the concentration tank is discharged through the concentration tube. At the same time, the descending square scraper can scrape off a small amount of oil adhering to the inner wall of the concentration tank, and as the oil is discharged, the hot water entering the concentration tank can flush the inner wall of the concentration tank and clean it again. The hot water has a good cleaning effect on the oil. When the square scraper reaches the bottom of the concentration tank, the cleaning hot water is discharged through the concentration tube; S7. After that, the two hydraulic rods extend to drive the rack to rise, and the box is driven to rotate 180 degrees again through the gears and the rotating shaft so that the drying chamber is at the top and the dewatering chamber is at the bottom. Then, the artemisia annua oil raw material is placed in the drying chamber through the feed pipe and the operation can continue. Beneficial Effects

[0012] The present invention provides a method for extracting volatile oil from artemisia annua oil. Compared with the prior art, the method has the following beneficial effects: 1. A method for extracting volatile oil from artemisia annua oil. After the artemisia annua oil is dehydrated with anhydrous sodium sulfate, the oil body and sodium sulfate enter a concentration box and a dewatering box respectively, and are heated in a water bath to perform reduced pressure concentration and dehydration operations on the two respectively, so that the sodium sulfate dehydration and reduced pressure concentration are performed at the same time, which will not increase the overall time and thus will not slow down the production efficiency. At the same time, the box body rotates to dehydrate the sodium sulfate and the sodium sulfate can be returned to the drying chamber for reuse. There is no need to transfer the sodium sulfate back and forth in various devices, thereby avoiding the waste of sodium sulfate during the transfer process. At the same time, the operation is simple and the workload of the staff is reduced. When the remaining oil body in the concentration box is discharged, the hot water in the water bath box will flow back into the concentration box, and the square scraper will be pressed down to scrape the oil adhering to the inner wall and discharge it with the oil body. At the same time, the backflowing hot water can clean the concentration chamber, thereby playing a cleaning role for the concentration box, ensuring the cleanliness of the inside of the concentration box and not affecting the next use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The schematic diagram is a structural diagram of a method for extracting volatile oil from artemisia annua oil; Figure 2 A side view of a method for extracting volatile oil from artemisia annua oil; Figure 3 A cross-sectional view of a method for extracting volatile oil from artemisia annua oil; Figure 4 for Figure 3 Enlarged view of part A; Figure 5 A longitudinal section diagram of a method for extracting volatile oil from artemisia annua oil; Figure 6 for Figure 5 Enlarged view of part B; Figure 7 for Figure 5 Enlarged view of part C in the middle; Figure 8 A cross-sectional view of a method for extracting volatile oil from artemisia annua oil; Fig. 9 The figure is a schematic diagram of the structure of a feeding mechanism for extracting volatile oil from artemisia annua oil; Fig.10 The present invention is a schematic diagram of the structure of a backflow pipe assembly for a method of extracting volatile oil from artemisia annua oil.

[0014] In the figure: 1. box body; 2. drying chamber; 3. dewatering chamber; 4. concentration box; 5. central cavity; 6. water inlet pipe; 7. first solenoid valve; 8. backflow pipe; 9. baffle groove; 10. round hole; 11. baffle; 12. extension rod; 13. limit plate; 14. square scraper; 15. steam pipe; 16. second solenoid valve; 17. concentration pipe; 18. vacuum pump; 19. third solenoid valve; 20. water bath; 21. first conveying pipe; 22. first piston; 23. electric push rod; 24. conveying pipe; 25. second conveying pipe; 26. partition; 27. connecting pipe; 28. second piston; 29. ​​through hole; 30. L-shaped plate; 31. horizontal plate; 32. vertical plate; 33. rotating shaft; 34. gear; 35. hydraulic rod; 36. rack; 37. bottom plate; 38. heating plate; 39. inlet pipe. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] Figure 1 The schematic diagram is a structural diagram of a method for extracting volatile oil from artemisia annua oil; Figure 2 A side view of a method for extracting volatile oil from artemisia annua oil; Figure 3 A cross-sectional view of a method for extracting volatile oil from artemisia annua oil; Figure 4 for Figure 3 Enlarged view of part A; Figure 5 A longitudinal section diagram of a method for extracting volatile oil from artemisia annua oil; Figure 6 for Figure 5 Enlarged view of part B; Figure 7 for Figure 5 Enlarged view of part C in the middle; Figure 8 A cross-sectional view of a method for extracting volatile oil from artemisia annua oil; Fig. 9 The figure is a schematic diagram of the structure of a feeding mechanism for extracting volatile oil from artemisia annua oil; Fig.10 A schematic diagram of the structure of a backflow pipe assembly for a method of extracting volatile oil from artemisia annua oil; See also Figure 1-10The present invention provides a technical solution for extracting volatile oil from artemisia annua oil: a method for extracting volatile oil from artemisia annua oil, after the artemisia annua oil is dehydrated with anhydrous sodium sulfate, the oil body and sodium sulfate enter a concentration tank and a dewatering tank respectively, and are simultaneously heated in a water bath to perform pressure reduction concentration and dehydration operations on the two respectively, after which the box body rotates to dehydrate the sodium sulfate and returns to the drying chamber, and when the remaining oil body in the concentration box is discharged, the hot water in the water bath box is poured back into the concentration box to press the square scraper down to scrape the oil adhering to the inner wall and discharge it with the oil body, and at the same time, the poured hot water can clean the concentration chamber.

[0017] The method is implemented by using an artemisia annua volatile oil extraction device, which includes a box mechanism, a feeding mechanism, a rotating mechanism and other components. The box mechanism is used for dehydration and drying of artemisia annua oil materials and evaporation and concentration operations. The feeding mechanism is used for moving liquid materials in various chambers in the box mechanism. The rotating mechanism is installed outside the box mechanism to drive the box mechanism to rotate. like Figure 1-10 As shown, the box structure includes a box body 1, a drying chamber 2, a dewatering chamber 3, a concentration box 4, a central cavity 5, a water inlet pipe 6, a first solenoid valve 7, a backflow pipe 8, a baffle groove 9, a round hole 10, a baffle 11, an extension rod 12, a limit plate 13, a square scraper 14, a steam pipe 15, a second solenoid valve 16, a concentration pipe 17, a vacuum pump 18, a third solenoid valve 19, a water bath 20, a heating plate 38, and a feed pipe 39; The drying chamber 2 is opened inside the box body 1, the dewatering chamber 3 is arranged inside the box body 1 and is directly below the drying chamber 2, the central cavity 5 is opened inside the box body 1 and is between the drying chamber 2 and the dewatering chamber 3, the feed pipe 39 is installed at the center of the upper surface of the box body 1 and is connected with the drying chamber 2, the water bath box 20 is arranged at the bottom of the box body 1, the water inlet pipe 6 is installed on the upper surface of the water bath box 20 and is located on one side of the box body 1, the first solenoid valve 7 is arranged on the water inlet pipe 6, the heating plate 38 is arranged on the inner bottom surface of the water bath box 20, the steam pipe 15 is installed on the side of the box body 1 and is connected with the dewatering chamber 3, and the second solenoid valve 16 is arranged on the steam pipe 15; The concentration tank 4 is arranged at the inner center of the dewatering chamber 3, the backflow pipe 8 is installed at the center of the inner bottom surface of the concentration tank 4 and extends into the water bath 20, the baffle groove 9 is provided at the upper end of the backflow pipe 8, a plurality of circular holes 10 are evenly provided at the inner bottom surface of the baffle groove 9 and communicated with the backflow pipe 8, the baffle 11 is arranged in the baffle groove 9 to match it and block all the circular holes 10, the extension rod 12 is installed at the center of the lower surface of the baffle 11 and the lower end extends into the backflow pipe 8, the limit plate 13 is installed at the lower end of the extension rod 12 extending into the backflow pipe 8, the square scraper 14 is slidably arranged in the concentration tank 4 and is matched therewith, the concentration pipe 17 is installed on the side of the concentration tank 4 near the top and the end extends to the outside of the box body 1, the vacuum pump 18 is installed on the other side of the box body 1 and is connected to the concentration pipe 17 pipeline, and the third solenoid valve 19 is arranged on the connecting pipe between the vacuum pump 18 and the concentration pipe 17; like Figure 1-10 As shown, the feeding mechanism includes a first feeding pipe 21, a first piston 22, an electric push rod 23, a feeding pipe 24, a second feeding pipe 25, a partition plate 26, a connecting pipe 27, a second piston 28, a through hole 29, an L-shaped plate 30, and a horizontal plate 31; The first delivery pipe 21 is installed at the center of the inner bottom surface of the drying chamber 2 and extends into the central cavity 5. The first piston 22 is slidably arranged in the first delivery pipe 21 and adapted thereto. The electric push rod 23 is installed at the center of the inner bottom surface of the central cavity 5 and the telescopic arm extends into the first delivery pipe 21 and is fixedly connected to the first piston 22. Two feed pipes 24 are installed on the side of the first delivery pipe 21 and the lower ends extend into the concentration tank 4. Two second delivery pipes 25 are installed on the inner bottom surface of the drying chamber 2 and are located on the side of the first delivery pipe 21. Each partition 26 is installed Installed in the corresponding second delivery pipe 25, each connecting pipe 27 is installed in the center of the upper surface of the corresponding partition 26 and the lower end extends into the dewatering chamber 3, each second piston 28 is arranged in the corresponding second delivery pipe 25 and is above the partition 26, each group of multiple through holes 29 is evenly opened on the upper surface of the corresponding second piston 28, each L-shaped plate 30 is installed on the lower surface of the corresponding second piston 28 and extends to the outside of the second delivery pipe 25, each horizontal plate 31 is arranged below the corresponding L-shaped plate 30 and the side is fixedly connected to the telescopic arm of the electric push rod 23; like Figure 1-10 As shown, the rotating mechanism includes a vertical plate 32, a rotating shaft 33, a gear 34, a hydraulic rod 35, a rack 36, and a bottom plate 37; The bottom plate 37 is arranged directly below the water bath 20, two vertical plates 32 are installed on the upper surface of the bottom plate 37 and are located on the side of the box body 1, two rotating shafts 33 are installed on the side of the box body 1 and are rotatably connected with the two vertical plates 32, each gear 34 is installed on the end of the corresponding rotating shaft 33 penetrating the vertical plate 32, each hydraulic rod 35 is installed on the upper surface of the bottom plate 37 and is located on one side of the corresponding vertical plate 32, and each rack 36 is installed on the upper end of the corresponding hydraulic rod 35 and meshes with the gear 34; Specifically include the following steps: S1. Open the cover of the feed pipe 39, add the extracted artemisia oil raw material into the drying chamber 2, then add anhydrous sodium sulfate into the drying chamber 2, cover the cover, the sodium sulfate absorbs water in the artemisia oil raw material, dry and dehydrate it, then the artemisia oil raw material and sodium sulfate are separated, and the sodium sulfate is at the bottom; S2, the electric push rod 23 extends to drive the first piston 22 and the cross plate 31 to rise, and the two rising cross plates 31 drive the two second pistons 28 to rise through the two L-shaped plates 30 until the second delivery pipe 25 limits the cross plate of the L-shaped plate 30 and stops rising. At this time, the partition 26 is released from the sealing of the through holes 29 on the second pistons 28, and the sodium sulfate at the bottom of the drying chamber 2 enters the second delivery pipe 25 through each through hole 29, and then enters the dewatering chamber 3 through the connecting pipe 27. The staff observes through the observation window of the box body 1. When the sodium sulfate completely enters the dewatering chamber 3, the electric push rod 23 is controlled to shorten, and the two second pistons 28 descend by their own gravity to contact the partition 26, and each partition 26 is used to block each through hole 29 on the corresponding second piston 28; S3, the electric push rod 23 shortens and drives the first piston 22 to descend until the first piston 22 descends to below the connection port between the feed pipe 24 and the first delivery pipe 21, and then the artemisia annua oil raw material left in the drying chamber 2 enters the first delivery pipe 21, and then enters the concentration box 4 through the two feed pipes 24. When the artemisia annua oil raw material completely enters the concentration box 4, the feed pipe 24 extends and drives the first piston 22 to restore its position; S4, installing the collecting container at the end of the concentrating tube 17, then the vacuum pump 18 is operated to reduce the pressure in the concentrating box 4, reducing the boiling point of the Artemisia annua volatile oil to 100 degrees, then closing the third solenoid valve 19, opening the first solenoid valve 7 to inject water into the water bath 20 through the water inlet pipe 6 until it is full, then the heating plate 38 is energized to heat the water in the water bath 20, and the Artemisia annua oil raw material in the concentrating box 4 and the sodium sulfate in the dehydration chamber 3 are heated in a water bath, the Artemisia annua volatile oil in the Artemisia annua oil raw material evaporates and enters the collecting container through the concentrating tube 17 and liquefies into Artemisia annua volatile oil, and at the same time, the sodium sulfate in the dehydration chamber 3 is heated, and the water in the sodium sulfate evaporates and is discharged through the steam pipe 15, and the sodium sulfate is dehydrated; S5, when the concentration of the Artemisia annua volatile oil is completed, the pressure in the concentration box 4 is restored, the collection container is removed, the second solenoid valve 16 is closed, the two hydraulic rods 35 are shortened to drive the rack 36 to descend, and the box body 1 is driven to rotate through the two gears 34 and the two rotating shafts 33 until the box body 1 rotates 180 degrees, at which time the dewatering chamber 3 is at the top and the drying chamber 2 is at the bottom; S6, the two second pistons 28 descend by their own gravity until the L-shaped plate 30 limits them, and then the dehydrated sodium sulfate in the dehydration chamber 3 enters the drying chamber 2 through the connecting pipe 27, the second delivery pipe 25 and the through hole 29 and can be used again. At the same time, the baffle 11 will also descend by gravity until it is limited by the limiting plate 13, and then the hot water in the water bath 20 is poured into the concentration tank 4 through the backflow pipe 8 and the circular hole 10, pressing the square scraper 14 to descend, and the remaining artemisia annua oil raw material oil in the concentration tank 4 is discharged through the concentration tube 17. At the same time, the descending square scraper 14 can scrape off a small amount of oil adhering to the inner wall of the concentration tank 4. As the oil is discharged, the hot water entering the concentration tank 4 can flush the inner wall of the concentration tank 4 and clean it again. The hot water has a good cleaning effect on the oil. When the square scraper 14 reaches the bottom of the concentration tank 4, the cleaning hot water is discharged through the concentration tube 17; S7, then the two hydraulic rods 35 extend to drive the rack 36 to rise, and the box body 1 is driven to rotate 180 degrees again through the gear 34 and the rotating shaft 33 so that the drying chamber 2 is at the top and the dewatering chamber 3 is at the bottom, and then the artemisia annua oil raw material is placed in the drying chamber 2 through the feed pipe 39 and the operation can be continued.

Claims

1. A method for extracting volatile oil from artemisia annua oil, characterized in that: After the artemisia annua oil is dehydrated by anhydrous sodium sulfate, the oil and sodium sulfate enter the concentration tank and the dewatering tank respectively, and are heated in a water bath to perform decompression concentration and dehydration operations on the two respectively. After that, the box rotates to dehydrate the sodium sulfate and returns to the drying chamber. When the remaining oil in the concentration tank is discharged, the hot water in the water bath tank flows back into the concentration tank, pressing the square scraper to go down and scrape the oil adhering to the inner wall and discharge it with the oil. At the same time, the backflowing hot water can clean the concentration chamber. The method is implemented by using an artemisia annua volatile oil extraction device, which includes components such as a box mechanism, a feeding mechanism and a rotating mechanism. The box mechanism is used for dehydrating and drying the artemisia annua oil material and performing evaporation and concentration operations. The feeding mechanism is used for moving liquid materials in various chambers in the box mechanism. The rotating mechanism is installed on the outside of the box mechanism and is used to drive the box mechanism to rotate.

2. The device for extracting volatile oil from artemisia annua oil according to claim 1, characterized in that: The box structure comprises a box (1), a drying chamber (2) is provided inside the box (1), a dewatering chamber (3) is provided inside the box (1) directly below the drying chamber (2), a concentration box (4) is installed at the center of the dewatering chamber (3), a central cavity (5) is provided inside the box (1) between the drying chamber (2) and the dewatering chamber (3), a feed pipe (39) connected to the drying chamber (2) is installed at the center of the upper surface of the box (1), and a pipe cover is provided at the end of the feed pipe (39).

3. The device for extracting volatile oil from artemisia annua oil according to claim 2, characterized in that: A water bath (20) is arranged at the bottom of the box (1), a pressure relief valve is installed on the upper surface of the water bath (20), a heating plate (38) is installed on the inner bottom surface of the water bath (20), a water inlet pipe (6) is installed on the upper surface of the water bath (20) at one side of the box (1), a first solenoid valve (7) is installed on the water inlet pipe (6), a steam pipe (15) connected to the dewatering chamber (3) is installed on the side of the box (1), a second solenoid valve (16) is installed on the steam pipe (15), a concentrator (17) extending to the outside of the box (1) is installed on the side of the concentrator box (4) near the top, a vacuum pump (18) connected to the concentrator pipe (17) is installed on the side of the box (1), and a third solenoid valve (19) is arranged on the pipe connecting the vacuum pump (18) and the concentrator pipe (17).

4. The device for extracting volatile oil from artemisia annua oil according to claim 3, characterized in that: The inner bottom surface of the concentration tank (4) is provided with a backflow pipe (8) extending into the water bath tank (20) and having a closed upper end. The upper end of the backflow pipe (8) is provided with a baffle groove (9). The inner bottom surface of the baffle groove (9) is provided with a plurality of evenly distributed circular holes (10). The inner wall of the baffle groove (9) is provided with a baffle (11) adapted thereto and blocking all the circular holes (10). An extension rod (12) extending into the backflow pipe (8) is installed at the center of the lower surface of the baffle (11). A limit plate (13) is installed at the lower end of the extension rod (12). A square scraper (14) adapted thereto is slidably provided at the inner bottom of the concentration tank (4).

5. The device for extracting volatile oil from artemisia annua oil according to claim 4, characterized in that: The feeding mechanism comprises a first feeding pipe (21) installed at the center of the bottom surface of the drying chamber (2) and extending into the central cavity (5); a first piston (22) matching the first feeding pipe (21) is slidably arranged at the upper end of the first feeding pipe (21); an electric push rod (23) having a telescopic arm extending into the first feeding pipe (21) and fixedly connected to the first piston (22) is installed on the inner bottom surface of the central cavity (5) just below the first feeding pipe (21); and two feeding pipes (24) whose lower ends are connected to the concentration tank (4) are correspondingly installed on the side surface of the first feeding pipe (21) below the first piston (22).

6. The device for extracting volatile oil from artemisia annua oil according to claim 5, characterized in that: Two second conveying pipes (25) extending into the central cavity (5) are installed on the inner bottom surface of the drying chamber (2) at the outer side of the first conveying pipe (21), respectively. A partition (26) is installed in each of the second conveying pipes (25). A connecting pipe (27) with a lower end extending into the dewatering chamber (3) is installed at the center of the upper surface of each of the partitions (26). A second piston (28) matching with the second conveying pipe (25) is arranged above the partition (26). A plurality of evenly distributed through holes (29) are opened on the upper surface of each of the second pistons (28). An L-shaped plate (30) extending to the outside of the second conveying pipe (25) is installed on the lower surface of each of the through holes (29). A transverse plate (31) is installed on the side of the telescopic arm of the electric push rod (23) below each L-shaped plate (30).

7. The device for extracting volatile oil from artemisia annua oil according to claim 6, characterized in that: The rotating mechanism comprises a bottom plate (37) arranged directly below the water bath (20), the upper surface of the bottom plate (37) being provided with two vertical plates (32) correspondingly mounted on the side surfaces of the box body (1), both sides of the box body (1) being provided with rotating shafts (33) rotatably connected to the vertical plates (32), each end of the rotating shaft (33) passing through the vertical plates (32) and being provided with a gear (34), the upper surface of the bottom plate (37) being provided with a hydraulic rod (35) on one side of each vertical plate (32), the upper end of each hydraulic rod (35) being provided with a rack (36) meshing with a corresponding gear (34).

8. A method for extracting volatile oil from artemisia annua oil according to claim 7, using the device according to claim 7, characterized in that: Specifically include the following steps: S1, opening the cap of the feed pipe (39), adding the extracted artemisia annua oil raw material into the drying chamber (2), then adding anhydrous sodium sulfate into the drying chamber (2), closing the cap, the sodium sulfate absorbing water in the artemisia annua oil raw material, drying and dehydrating the artemisia annua oil raw material, then the artemisia annua oil raw material and sodium sulfate are separated into layers, with the sodium sulfate at the bottom; S2, the electric push rod (23) extends to drive the first piston (22) and the cross plate (31) to rise, and the two rising cross plates (31) drive the two second pistons (28) to rise through the two L-shaped plates (30) until the second delivery pipe (25) limits the cross plate of the L-shaped plate (30) and stops rising. At this time, the partition (26) releases the sealing of the through holes (29) on the second pistons (28), and the sodium sulfate at the bottom of the drying chamber (2) enters the second delivery pipe (25) through the through holes (29), and then enters the dewatering chamber (3) through the connecting pipe (27). The staff observes through the observation window of the box body (1). When the sodium sulfate completely enters the dewatering chamber (3), the electric push rod (23) is controlled to shorten, and the two second pistons (28) descend by their own gravity to contact the partition (26), and each partition (26) is used to block the through holes (29) on the corresponding second pistons (28); S3, the electric push rod (23) shortens to drive the first piston (22) downward until the first piston (22) descends to below the connection port between the feed pipe (24) and the first delivery pipe (21), and then the artemisia annua oil raw material remaining in the drying chamber (2) enters the first delivery pipe (21), and then enters the concentration box (4) through the two feed pipes (24). When the artemisia annua oil raw material has completely entered the concentration box (4), the feed pipe (24) extends to drive the first piston (22) to restore its position; S4, installing the collecting container at the end of the concentrating tube (17), then operating the vacuum pump (18) to reduce the pressure in the concentrating box (4), lowering the boiling point of the Artemisia annua volatile oil to 100 degrees, then closing the third solenoid valve (19), opening the first solenoid valve (7) to inject water into the water bath box (20) through the water inlet pipe (6) until it is full, then energizing the heating plate (38) to heat the water in the water bath box (20), and heating the Artemisia annua oil raw material in the concentrating box (4) and the sodium sulfate in the dehydration chamber (3) in a water bath, the Artemisia annua volatile oil in the Artemisia annua oil raw material evaporates and enters the collecting container through the concentrating tube (17) and is liquefied into Artemisia annua volatile oil, and at the same time, the sodium sulfate in the dehydration chamber (3) is heated, the water in the sodium sulfate evaporates and is discharged through the steam pipe (15), and the sodium sulfate is dehydrated; S5. When the concentration of the Artemisia annua volatile oil is completed and the pressure in the concentration box (4) is restored, the collection container is removed, the second solenoid valve (16) is closed, the two hydraulic rods (35) are shortened to drive the rack (36) to descend, and the box body (1) is driven to rotate through the two gears (34) and the two rotating shafts (33) until the box body (1) rotates 180 degrees. At this time, the dewatering chamber (3) is at the top and the drying chamber (2) is at the bottom; S6. The two second pistons (28) descend by their own gravity until they are limited by the L-shaped plate (30). Then, the dehydrated sodium sulfate in the dehydration chamber (3) enters the drying chamber (2) through the connecting pipe (27), the second delivery pipe (25) and the through hole (29) and can be used again. At the same time, the baffle (11) also descends by gravity until it is limited by the limit plate (13). Then, the hot water in the water bath (20) is poured into the concentration tank (4) through the backflow pipe (8) and the circular hole (10). The movable square scraper (14) descends, and the remaining artemisia annua oil raw material oil in the concentration box (4) is discharged through the concentration pipe (17). At the same time, the descending square scraper (14) can scrape off a small amount of oil adhering to the inner wall of the concentration box (4). As the oil is discharged, the hot water entering the concentration box (4) can flush the inner wall of the concentration box (4) and clean it again. The hot water has a good cleaning effect on the oil. When the square scraper (14) reaches the bottom of the concentration box (4), the cleaning hot water is discharged through the concentration pipe (17); S7. After that, the two hydraulic rods (35) extend to drive the rack (36) to rise, and drive the box body (1) to rotate 180 degrees again through the gear (34) and the rotating shaft (33) so that the drying chamber (2) is at the top and the dewatering chamber (3) is at the bottom. Then, the artemisia annua oil raw material is placed into the drying chamber (2) through the feed pipe (39) and the operation can be continued.

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