Polygonum hydropiper essential oil extraction device

Abstract

The invention belongs to the technical field of essential oil extraction, and particularly relates to a polygonum hydropiper essential oil extraction device which comprises a bottom barrel, a storage tray and a barrel cover are clamped to the top of the bottom barrel, a motor is fixedly connected to the top of the barrel cover, a rotating shaft of the motor penetrates through the top of the barrel cover and then is fixedly connected with a rotating barrel, and a stirring barrel is fixedly connected to the bottom of the rotating barrel. A plurality of groups of stirring teeth are fixedly connected to the bottom of the stirring barrel, a plurality of groups of heaters are mounted at the bottom of the bottom barrel, a steam conveying assembly is arranged at the bottom of the storage disc, and an essential oil scraping assembly is arranged on the side wall of the top of the rotating barrel. The motor drives the stirring barrel and the stirring teeth to stir the polygonum hydropiper powder through the rotating shaft and the rotating barrel, the polygonum hydropiper powder can be evenly heated, steam is conveyed into the stirring barrel through the steam conveying assembly and sprayed to the polygonum hydropiper powder from the stirring teeth, the polygonum hydropiper powder makes more sufficient contact with the steam, and the essential oil extraction efficiency of the polygonum hydropiper powder is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of essential oil extraction, in particular to a device for extracting essential oil from water polygonum hydropiper. Background Art

[0002] Polygonum water chestnut is an annual herb of the Polygonaceae family, Polygonum genus, distributed in provinces and regions in northern and southern China. The whole plant of Polygonum water chestnut is used as medicine, which can reduce swelling, detoxify, promote diuresis, and stop diarrhea.

[0003] Polygonum hydropiper essential oil has the effect of whitening human skin. Polygonum hydropiper essential oil is used to prepare cosmetics. Polygonum hydropiper essential oil is extracted through a special Polygonum hydropiper essential oil extraction device. The Polygonum hydropiper essential oil extraction device uses steam distillation to extract Polygonum hydropiper essential oil.

[0004] In the current prior art, during the extraction of Polygonum hydropiper essential oil by distillation, on the one hand, the Polygonum hydropiper powder remains stationary in a storage tray, and the steam is not in sufficient contact with the Polygonum hydropiper powder; on the other hand, the essential oil produced by distillation is adsorbed on the inner wall of the tank along with the steam, which is inconvenient to collect and causes waste.

[0005] To this end, the present invention provides a device for extracting essential oil of Polygonum hydropiper. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a Polygonum hydropiper essential oil extraction device described in the present invention comprises a bottom barrel, a storage tray and a barrel cover are clamped on the top of the bottom barrel, a motor is fixedly connected to the top of the barrel cover, a rotating shaft of the motor passes through the top of the barrel cover and is fixedly connected to a rotating drum, a stirring drum is fixedly connected to the bottom of the rotating drum, a plurality of stirring teeth are fixedly connected to the bottom of the stirring drum, a plurality of heaters are installed at the bottom of the bottom barrel, a steam delivery assembly is provided at the bottom of the storage tray, an essential oil scraping assembly is provided on the top side wall of the rotating drum, an oil outlet pipe is fixedly connected to the top side wall of the barrel cover, an oil guide pipe is fixedly connected to the bottom surface of the end of the oil outlet pipe.

[0008] Preferably, the steam delivery assembly includes a delivery pipe and a docking joint, the docking joint is fixedly connected to the bottom of the rotating cylinder, a knocking piece is provided in the delivery pipe, the delivery pipe is spiral-shaped, one end of the delivery pipe close to the center of the placement plate is fixedly connected to a manifold, the manifold is fixedly connected to the center of the placement plate, and a docking joint is adapted at the top of the manifold.

[0009] Preferably, the knocking member comprises a cylindrical shaft, which is rotatably connected to the conveying pipe, and four blades are fixedly connected to the cylindrical shaft, and ends of the four blades away from the cylindrical shaft are fixedly connected to the knocking blocks through rubber strips.

[0010] Preferably, the essential oil scraping assembly includes a scraping bar, a guide groove is provided on the side of the scraping bar close to the barrel cover, one side of the scraping bar is high, and the other side of the scraping bar is low, and the high side of the scraping bar is in contact with the inner wall of the barrel cover, and an essential oil temporary storage mechanism is provided at the bottom of the scraping bar.

[0011] Preferably, the collecting box includes a collecting box, which is fixedly connected to the bottom of the scraper strip, a guide port is opened on the top of the collecting box, the guide port is connected to the guide groove of the scraper strip, a sealing piece is arranged in the collecting box, and a drainage mechanism is arranged at the bottom of the barrel cover, and the drainage mechanism is used to drain the essential oil temporarily stored in the collecting box into the oil guide pipe.

[0012] Preferably, the sealing member includes a liquid outlet and a support tube, the support tube is fixedly connected to the inner wall of the collecting box, the liquid outlet is opened at one end of the collecting box close to the scraper strip, a sealing block is slidably connected to the liquid outlet, a side wall of the sealing block away from the barrel cover is fixedly connected to a support shaft, an end of the support shaft away from the sealing block is slidably connected in the support tube, and a spring is arranged in the support tube.

[0013] Preferably, the drainage mechanism includes a guide hole and a drainage shell, the guide hole is opened at the bottom of the barrel cover, the drainage shell is fixedly connected to the outer wall of the barrel cover, a sealing block 2 is slidably connected in the guide hole, an electromagnet is fixedly connected to the inner wall of the drainage shell, a cylindrical rod is fixedly connected to the telescopic shaft of the electromagnet, one end of the cylindrical rod away from the electromagnet is fixedly connected to the sealing block 2, a guide pipe is fixedly connected to the bottom of the drainage shell, one end of the guide pipe away from the drainage shell is connected to the oil guide pipe, and a guide piece is arranged on the sealing block 2.

[0014] Preferably, the guide member comprises a drainage groove, which is arranged at one end of the second blocking block away from the cylindrical rod, and a drainage hole is arranged on the second blocking block, which is connected with the drainage groove.

[0015] Preferably, a nozzle is fixedly connected to one end of the rotating drum away from the mixing drum, and the end of the nozzle away from the rotating drum is placed in the guide groove of the scraper strip.

[0016] Preferably, a return pipe 1 is fixedly connected to the top of one end of the oil guide pipe away from the barrel cover, a filter cotton is fixedly connected to the connection between the return pipe 1 and the oil guide pipe, a return pipe 2 is fixedly connected to the top side wall of the bottom barrel, and the return pipe 2 is butt-jointed with the bottom of the return pipe 1.

[0017] The beneficial effects of the present invention are as follows:

[0018] The device for extracting essential oil of Polygonum hydropiper described in the present invention is provided with a stirring drum, stirring teeth and a steam conveying component. A motor drives the stirring drum and the stirring teeth to stir the Polygonum hydropiper powder through a rotating shaft and a rotating drum, which is beneficial to uniform heating of the Polygonum hydropiper powder. Steam is conveyed into the stirring drum through the steam conveying component and sprayed toward the Polygonum hydropiper powder from the stirring teeth, which is beneficial to more complete contact between the Polygonum hydropiper powder and the steam, so that the Polygonum hydropiper powder is further evenly heated, which is beneficial to the essential oil extraction efficiency of the Polygonum hydropiper powder.

[0019] The Polygonum hydropiper essential oil extraction device described in the present invention is equipped with an essential oil scraping component. During the rotation of the rotating drum, the rotating drum can drive the essential oil scraping component to scrape off the essential oil components condensed and adsorbed on the inner wall of the barrel cover. The scraped essential oil flows into the oil guide pipe and is collected by the container, which is beneficial to reducing the waste caused by the condensation of essential oil on the inner wall of the barrel cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a stereogram of the present invention;

[0022] Figure 2 It is a schematic diagram of the structural dissection of the present invention;

[0023] Figure 3 It is a schematic diagram of the barrel cover section of the present invention;

[0024] Figure 4 It is a schematic diagram of the bottom structure of the storage tray of the present invention;

[0025] Figure 5 It is a schematic diagram of the internal structure of the delivery pipe of the present invention;

[0026] Figure 6 is a schematic diagram of a stirring shaft and a stirring rod of the present invention;

[0027] Figure 7 is a schematic diagram of a scraper strip of the present invention;

[0028] Figure 8 It is a schematic diagram of the connection between the scraper strip and the collection box of the present invention;

[0029] Fig. 9 It is a schematic diagram of the connection between the barrel cover and the drainage cover of the present invention;

[0030] Fig.10 It is a schematic diagram of the blocking block of the present invention.

[0031] In the figure: 1. bottom barrel; 2. storage tray; 3. heater; 4. barrel cover; 5. motor; 6. oil outlet pipe; 7. oil guide pipe; 8. rotating barrel; 81. docking joint; 9. mixing barrel; 10. mixing teeth; 11. delivery pipe; 12. conduit; 13. cylindrical shaft; 14. blades; 15. knocking block; 16. scraper; 17. collecting box; 18. diversion port; 19. blocking block 1; 20. supporting barrel; 21. supporting shaft; 22. spring; 23. diversion hole; 24. diversion shell; 25. electromagnet; 26. cylindrical rod; 27. blocking block 2; 28. drainage groove; 29. ​​drainage hole; 30. diversion pipe; 31. nozzle; 32. return pipe 1; 33. return pipe 2. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] Combination Figure 1 and Figure 2 As shown, a device for extracting essential oil of Polygonum hydropiper described in an embodiment of the present invention comprises a bottom barrel 1, a storage tray 2 and a barrel cover 4 are clamped on the top of the bottom barrel 1, a motor 5 is fixedly connected to the top of the barrel cover 4, a rotating shaft of the motor 5 passes through the top of the barrel cover 4 and is fixedly connected to a rotating drum 8, a stirring drum 9 is fixedly connected to the bottom of the rotating drum 8, a plurality of stirring teeth 10 are fixedly connected to the bottom of the stirring drum 9, a plurality of heaters 3 are installed at the bottom of the bottom barrel 1, a steam delivery assembly is provided at the bottom of the storage tray 2, an essential oil scraping assembly is provided on the top side wall of the rotating drum 8, an oil outlet pipe 6 is fixedly connected to the top side wall of the barrel cover 4, an oil guide pipe 7 is fixedly connected to the bottom end of the oil outlet pipe 6; when working, clean water is put into the bottom barrel 1, the storage tray 2 is clamped on the top of the bottom barrel 1, the Polygonum hydropiper powder is spread on the storage tray 2, and then the barrel cover 4 is clamped on the top of the bottom barrel 1, and then the heater 3 is started. , so that the heater 3 heats the clean water in the bottom barrel 1 to boil, and the motor 5 is started. The motor 5 drives the stirring drum 9 and the stirring teeth 10 to stir the Polygonum hydropiper powder through the rotating shaft and the rotating drum 8, which is beneficial to the uniform heating of the Polygonum hydropiper powder. The steam is transported to the stirring drum 9 through the steam transport component and sprayed to the Polygonum hydropiper powder from the stirring teeth 10, which is beneficial to the more complete contact between the Polygonum hydropiper powder and the steam, so that the Polygonum hydropiper powder is further heated evenly, which is beneficial to the essential oil extraction efficiency of the Polygonum hydropiper powder. The essential oil components produced by the distillation of the Polygonum hydropiper powder are cooled through the oil outlet pipe 6 and flow into the oil guide pipe 7 and are collected by the container. During the rotation of the rotating drum 8, the rotating drum 8 can drive the essential oil scraping component to scrape the essential oil components condensed and adsorbed on the inner wall of the barrel cover 4. The scraped essential oil converges into the oil guide pipe 7 and is collected by the container, which is beneficial to reduce the waste caused by the condensation of essential oil on the inner wall of the barrel cover 4.

[0034] Combination Figure 2 , Figure 4 and Figure 5 As shown, the steam delivery assembly includes a delivery pipe 11 and a docking joint 81, the docking joint 81 is fixedly connected to the bottom of the rotating cylinder 8, a knocking piece is arranged in the delivery pipe 11, the delivery pipe 11 is spiral, and one end of the delivery pipe 11 close to the center of the storage tray 2 is fixedly connected to a manifold 12, the manifold 12 is fixedly connected to the center of the storage tray 2, and the top of the manifold 12 is adapted to the docking joint 81; when working, after the heater 3 heats and boils the clean water in the bottom barrel 1, the water vapor enters the manifold 12 through the delivery pipe 11, and enters the manifold 12 from the manifold 12 to In the stirring drum 9, the liquid is sprayed out from the stirring teeth 10, which is beneficial to the distillation of the Polygonum hydropiper powder during the stirring of the Polygonum hydropiper powder by the stirring teeth 10, and is beneficial to more uniform contact between the Polygonum hydropiper powder and the steam, thereby helping to improve the extraction efficiency of the Polygonum hydropiper essential oil. In the process of the steam flowing in the conveying pipe 11, the knocking piece will be driven, and the knocking piece will knock on the bottom of the placing plate 2, causing the placing plate 2 to vibrate, which is beneficial to the vibration and dispersion of the Polygonum hydropiper powder on the placing plate 2. The stirring of the stirring teeth 10 is beneficial to avoid the stickiness of the Polygonum hydropiper powder, which is further beneficial to the extraction of the Polygonum hydropiper essential oil.

[0035] Combination Figure 4 and Figure 5 As shown, the knocking piece includes a cylindrical shaft 13, which is rotatably connected to the delivery pipe 11, and four blades 14 are fixedly connected to the cylindrical shaft 13. The ends of the four blades 14 away from the cylindrical shaft 13 are fixedly connected to the knocking blocks 15 through rubber strips; when working, the steam will push the blades 14 to rotate during the flow of steam in the delivery pipe 11. During the rotation of the blades 14, the knocking blocks 15 will knock the bottom of the storage tray 2, which is conducive to the vibration of the storage tray 2, so that the water polygonum powder on the storage tray 2 is vibrated and dispersed, which is conducive to more complete contact between the water polygonum powder and the steam, and further conducive to improving the extraction efficiency of the water polygonum essential oil.

[0036] Combination Figure 3 , Figure 7 and Figure 8 As shown, the essential oil scraping assembly includes a scraper bar 16, and a guide groove is opened on one side of the scraper bar 16 close to the barrel cover 4, one side of the scraper bar 16 is high, and the other side of the scraper bar 16 is low, and the high side of the scraper bar 16 is in contact with the inner wall of the barrel cover 4, and an essential oil temporary storage mechanism is arranged at the bottom of the scraper bar 16; during operation, in the process of the rotating drum 8 driving the mixing drum 9 to rotate, the rotating drum 8 will also drive the scraper bar 16 to rotate, and the high side of the scraper bar 16 will scrape the essential oil on the inner wall of the barrel cover 4, and the scraped essential oil enters the guide groove, and flows from the guide groove to the essential oil temporary storage mechanism at the bottom of the scraper bar 16. The setting of the essential oil temporary storage mechanism is beneficial to the collection of the essential oil on the one hand, and on the other hand, it is beneficial to prevent the scraped essential oil from volatilizing again and condensing on the inner wall of the barrel cover 4 after flowing through the bottom of the barrel cover 4.

[0037] Combination Figure 3, Figure 8 and Fig. 9 As shown, the essential oil temporary storage mechanism includes a collection box 17, which is fixedly connected to the bottom of the scraper 16, and a guide port 18 is provided on the top of the collection box 17, which is connected to the guide groove of the scraper 16, and a plugging member is provided in the collection box 17. A drainage mechanism is provided at the bottom of the barrel cover 4, and the drainage mechanism is used to drain the essential oil temporarily stored in the collection box 17 into the oil guide pipe 7; when working, in the process of the rotating drum 8 driving the mixing drum 9 to rotate, the rotating drum 8 will also drive the scraper 16 to rotate, and the scraper 1 6 The higher side scrapes off the essential oil on the inner wall of the barrel cover 4, the scraped essential oil enters the guide groove, and flows into the guide port 18 from the bottom of the drainage groove and converges into the collecting box 17. After the essential oil stored in the collecting box 17 reaches a certain level, the rotating cylinder 8 drives the collecting box 17 to rotate to the drainage mechanism set at the bottom of the barrel cover 4, and the blocking component releases the blocking of the collecting box 17. The essential oil in the collecting box 17 flows into the oil guide pipe 7 through the drainage mechanism and is collected, which is conducive to the discharge of the essential oil in the collecting box 17.

[0038] Combination Figure 8 As shown, the sealing member includes a liquid outlet and a support tube 20, the support tube 20 is fixedly connected to the inner wall of the collection box 17, the liquid outlet is opened at one end of the collection box 17 close to the scraper 16, a sealing block 19 is slidably connected at the liquid outlet, the side wall of the sealing block 19 away from the barrel cover 4 is fixedly connected with a support shaft 21, the end of the support shaft 21 away from the sealing block 19 is slidably connected in the support tube 20, and a spring 22 is arranged in the support tube 20; when working, under the action of the spring 22, the support shaft 21 pushes the sealing block 19 to seal the liquid outlet, which is beneficial for the collection box 17 to temporarily store the essential oil.

[0039] Combination Figure 3 and Fig. 9As shown, the drainage mechanism includes a guide hole 23 and a drainage shell 24. The guide hole 23 is opened at the bottom of the barrel cover 4. The drainage shell 24 is fixedly connected to the outer wall of the barrel cover 4. A blocking block 27 is slidably connected in the guide hole 23. An electromagnet 25 is fixedly connected to the inner wall of the drainage shell 24. A cylindrical rod 26 is fixedly connected to the telescopic shaft of the electromagnet 25. One end of the cylindrical rod 26 away from the electromagnet 25 is fixedly connected to the blocking block 27. A guide pipe 30 is fixedly connected to the bottom of the drainage shell 24. One end of the guide pipe 30 away from the drainage shell 24 is connected to the oil guide pipe 7. A guide piece is arranged on the blocking block 27. Working When the essential oil stored in the collecting box 17 reaches a certain level, the rotating cylinder 8 drives the collecting box 17 to rotate to the guide hole 23 at the bottom of the barrel cover 4, and the electromagnet 25 is started. The telescopic shaft of the electromagnet 25 pushes the blocking block 27, and the blocking block 27 enters the liquid outlet of the collecting box 17 from the guide hole 23, and pushes the blocking block 19 out of the liquid outlet of the collecting box 17. The essential oil in the collecting box 17 passes through the liquid outlet of the collecting box 17 and the guide hole 23 in turn through the guide piece into the drainage shell 24, and finally enters the oil guide pipe 7 through the guide pipe 30, which is conducive to the discharge of the essential oil in the collecting box 17.

[0040] Combination Fig. 9 and Fig.10 As shown, the guide member includes a drainage groove 28, which is arranged at one end of the blocking block 27 away from the cylindrical rod 26, and a drainage hole 29 is arranged on the blocking block 27, and the drainage hole 29 is connected with the drainage groove 28; when working, the blocking block 27 enters the liquid outlet of the collecting box 17 from the guide hole 23, and pushes the blocking block 19 out of the liquid outlet of the collecting box 17, and the drainage groove 28 is placed in the collecting box 17, and the essential oil in the collecting box 17 flows into the drainage hole 29 through the drainage groove 28, which is conducive to the essential oil flowing into the guide hole 23 through the liquid outlet of the collecting box 17, and finally enters the drainage shell 24.

[0041] Combination Figure 6 and Figure 7 As shown, the end of the rotating drum 8 away from the mixing drum 9 is fixedly connected with a nozzle 31, and the end of the nozzle 31 away from the rotating drum 8 is placed in the guide groove of the scraper 16; when working, the rotating drum 8 is connected with the mixing drum 9, and the steam enters the rotating drum 8 and the mixing drum 9 through the docking joint 81. The setting of the nozzle 31 is conducive to the steam guided by the conduit 12 to enter the nozzle 31 through the rotating drum 8, and blow from the nozzle 31 to the guide groove of the scraper 16, which is conducive to the essential oil in the guide groove of the scraper 16 to flow downward and converge into the collection box 17.

[0042] Combination Figure 1 and Figure 2As shown, a return pipe 1 32 is fixedly connected to the top of one end of the oil guide pipe 7 away from the barrel cover 4, and a filter cotton is fixedly connected to the connection between the return pipe 1 32 and the oil guide pipe 7, and a return pipe 2 33 is fixedly connected to the top side wall of the bottom barrel 1, and the return pipe 2 33 is connected to the bottom of the return pipe 1 32; during operation, through the arrangement of the return pipe 1 32 and the return pipe 2 33, the steam flowing out of the oil guide pipe 7 can enter the return pipe 1 32, and then flow back to the bottom barrel 1 through the return pipe 2 33, which is beneficial to the reuse of steam, and the arrangement of the filter cotton is beneficial to prevent the essential oil in the oil guide pipe 7 from entering the return pipe 1 32.

[0043] Working principle: put clean water into the bottom barrel 1, clamp the placing plate 2 on the top of the bottom barrel 1, spread the water polygonum powder on the placing plate 2, and then clamp the barrel cover 4 on the top of the bottom barrel 1, and then start the heater 3 to make the heater 3 heat the clean water in the bottom barrel 1 to boil, start the motor 5, and the motor 5 drives the stirring drum 9 and the stirring teeth 10 to stir the water polygonum powder through the rotating shaft and the rotating drum 8, which is conducive to uniform heating of the water polygonum powder.

[0044] The steam enters the conduit 12 through the delivery pipe 11, and enters the mixing drum 9 from the conduit 12, and is ejected from the stirring teeth 10, which is beneficial to distilling the Polygonum hydropiper powder during the process of stirring the Polygonum hydropiper powder by the stirring teeth 10, and is beneficial to more uniform contact between the Polygonum hydropiper powder and the steam, thereby helping to improve the extraction efficiency of the Polygonum hydropiper essential oil.

[0045] When the steam flows in the conveying pipe 11, the steam will push the blades 14 to rotate. When the blades 14 rotate, the knocking block 15 will knock the bottom of the placing tray 2, which is conducive to the vibration of the placing tray 2, so that the water polygonum powder on the placing tray 2 is vibrated and dispersed, which is conducive to more complete contact between the water polygonum powder and the steam, and further conducive to further improving the extraction efficiency of the water polygonum essential oil.

[0046] When the rotating drum 8 drives the mixing drum 9 to rotate, the rotating drum 8 also drives the scraper 16 to rotate. The high side of the scraper 16 scrapes off the essential oil on the inner wall of the barrel cover 4. The scraped essential oil enters the guide groove and flows from the guide groove to the collection box 17 at the bottom of the scraper 16.

[0047] After the essential oil stored in the collecting box 17 reaches a certain level, the rotating cylinder 8 drives the collecting box 17 to rotate to the guide hole 23 at the bottom of the barrel cover 4, and the electromagnet 25 is started. The telescopic shaft of the electromagnet 25 pushes the blocking block 27, and the blocking block 27 enters the liquid outlet of the collecting box 17 from the guide hole 23, and pushes the blocking block 19 out of the liquid outlet of the collecting box 17. The essential oil in the collecting box 17 passes through the liquid outlet of the collecting box 17 and the guide hole 23 in turn through the guide piece and enters the drainage shell 24, and finally enters the oil guide pipe 7 through the guide pipe 30, which is beneficial to the discharge of the essential oil in the collecting box 17 and to avoid the scraped essential oil flow channel barrel cover 4 from volatilizing again and condensing on the inner wall of the barrel cover 4.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for extracting essential oil from Polygonum hydropiper, characterized in that: The invention comprises a bottom barrel (1), the top of the bottom barrel (1) is clamped with a storage tray (2) and a barrel cover (4), the top of the barrel cover (4) is fixedly connected with a motor (5), the rotating shaft of the motor (5) passes through the top of the barrel cover (4) and is fixedly connected with a rotating drum (8), the bottom of the rotating drum (8) is fixedly connected with a stirring drum (9), the bottom of the stirring drum (9) is fixedly connected with a plurality of stirring teeth (10), the bottom of the bottom barrel (1) is equipped with a plurality of heaters (3), the bottom of the storage tray (2) is provided with a steam conveying assembly, the top side wall of the rotating drum (8) is provided with an essential oil scraping assembly, the top side wall of the barrel cover (4) is fixedly connected with an oil outlet pipe (6), and the bottom surface of the end of the oil outlet pipe (6) is fixedly connected with an oil guide pipe (7).

2. The device for extracting essential oil from Polygonum hydropiper according to claim 1, characterized in that: The steam delivery assembly comprises a delivery pipe (11) and a docking joint (81), wherein the docking joint (81) is fixedly connected to the bottom of the rotating cylinder (8), a knocking piece is arranged in the delivery pipe (11), the delivery pipe (11) is spiral-shaped, one end of the delivery pipe (11) close to the center of the storage tray (2) is fixedly connected to a manifold (12), the manifold (12) is fixedly connected to the center of the storage tray (2), and the top of the manifold (12) is matched with the docking joint (81).

3. The device for extracting essential oil from Polygonum hydropiper according to claim 2, characterized in that: The knocking member comprises a cylindrical shaft (13), the cylindrical shaft (13) is rotatably connected to the conveying pipe (11), four blades (14) are fixedly connected to the cylindrical shaft (13), and one end of the four blades (14) away from the cylindrical shaft (13) is fixedly connected to a knocking block (15) via a rubber strip.

4. The device for extracting essential oil from Polygonum hydropiper according to claim 1, characterized in that: The essential oil scraping assembly comprises a scraping strip (16), a guide groove is provided on a side of the scraping strip (16) close to the barrel cover (4), one side of the scraping strip (16) is high, and the other side of the scraping strip (16) is low, and the high side of the scraping strip (16) is in contact with the inner wall of the barrel cover (4), and an essential oil temporary storage mechanism is provided at the bottom of the scraping strip (16).

5. The device for extracting essential oil from Polygonum hydropiper according to claim 4, characterized in that: The collecting box (17) comprises a collecting box (17) which is fixedly connected to the bottom of the scraper (16); a guide port (18) is provided at the top of the collecting box (17); the guide port (18) is communicated with the guide groove of the scraper (16); a blocking member is provided in the collecting box (17); a drainage mechanism is provided at the bottom of the barrel cover (4); the drainage mechanism is used to drain the essential oil temporarily stored in the collecting box (17) into the oil guide pipe (7).

6. The device for extracting essential oil from Polygonum hydropiper according to claim 5, characterized in that: The blocking member comprises a liquid outlet and a support tube (20), the support tube (20) being fixedly connected to the inner wall of the collection box (17), the liquid outlet being arranged at one end of the collection box (17) close to the scraper (16), a blocking block (19) being slidably connected to the liquid outlet, a support shaft (21) being fixedly connected to the side wall of the blocking block (19) at one end away from the barrel cover (4), an end of the support shaft (21) away from the blocking block (19) being slidably connected in the support tube (20), and a spring (22) being arranged in the support tube (20).

7. The device for extracting essential oil from Polygonum hydropiper according to claim 6, characterized in that: The drainage mechanism comprises a drainage hole (23) and a drainage shell (24); the drainage hole (23) is provided at the bottom of the barrel cover (4); the drainage shell (24) is fixedly connected to the outer wall of the barrel cover (4); a second blocking block (27) is slidably connected in the drainage hole (23); an electromagnet (25) is fixedly connected to the inner wall of the drainage shell (24); a cylindrical rod (26) is fixedly connected to the telescopic shaft of the electromagnet (25); an end of the cylindrical rod (26) away from the electromagnet (25) is fixedly connected to the second blocking block (27); a drainage pipe (30) is fixedly connected to the bottom of the drainage shell (24); an end of the drainage pipe (30) away from the drainage shell (24) is connected to the oil guide pipe (7); and a drainage member is arranged on the second blocking block (27).

8. The device for extracting essential oil from Polygonum hydropiper according to claim 7, characterized in that: The guide member comprises a drainage groove (28), which is arranged at one end of the second blocking block (27) away from the cylindrical rod (26), and a drainage hole (29) is arranged on the second blocking block (27), and the drainage hole (29) is connected to the drainage groove (28).

9. The device for extracting essential oil from Polygonum hydropiper according to claim 4, characterized in that: One end of the rotating cylinder (8) away from the mixing cylinder (9) is fixedly connected to a nozzle (31), and the end of the nozzle (31) away from the rotating cylinder (8) is placed in the guide groove of the scraper (16).

10. The device for extracting essential oil from Polygonum hydropiper according to claim 1, characterized in that: The top of one end of the oil guide pipe (7) away from the barrel cover (4) is fixedly connected to a return pipe 1 (32), the connection between the return pipe 1 (32) and the oil guide pipe (7) is fixedly connected to a filter cotton, the top side wall of the bottom barrel (1) is fixedly connected to a return pipe 2 (33), and the return pipe 2 (33) is butted against the bottom of the return pipe 1 (32).

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