Supercritical entrainment extraction device for total flavonoids in folium cortex eucommiae

Abstract

The invention discloses a supercritical entrainment extraction device for total flavonoids in folium cortex eucommiae, and relates to the technical field of pharmaceutical production. Comprising a fluid supply mechanism and an extraction mechanism, the fluid supply mechanism comprises a material mixing tank, a stirring pipe is rotatably arranged in the material mixing tank, a plurality of strip-shaped shells are fixedly arranged on the surface of the stirring pipe, and a plurality of nozzles are fixedly embedded in the surfaces of the strip-shaped shells. A dispersing disc and a grinding roller are arranged in the extraction tank, eucommia ulmoides leaves on the surface of the dispersing disc can be ground and smashed, and meanwhile, supercritical carbon dioxide mixed fluid is sprayed to the surfaces of the eucommia ulmoides leaves on the surface of the dispersing disc through a spray head on the surface of a rotating arm, so that the mixed fluid and the eucommia ulmoides leaves fully react; by utilizing the dissolving capacity of the supercritical carbon dioxide mixed fluid, a worker can conveniently extract the total flavonoids from the folium cortex eucommiae dissolved solution, so that the residual of solvent toxicity under the traditional solvent extraction condition can be effectively avoided, and meanwhile, the poison to a human body and the pollution to the environment in the extraction process are also prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of pharmaceutical production, and particularly to a supercritical entrained extraction device for total flavonoids from Eucommia ulmoides leaves. Background Art

[0002] The supercritical fluid extraction and separation process utilizes the relationship between the solubility of supercritical fluid and its density, that is, it is carried out by using the influence of pressure and temperature on the solubility of supercritical fluid. When a substance is in the supercritical state, it becomes a single phase state with properties between those of a liquid and a gas, having a density similar to that of a liquid, a viscosity higher than that of a gas but significantly lower than that of a liquid, and a diffusion coefficient 10 - 100 times that of a liquid. Therefore, it has good permeability and strong solubility for materials, and can extract certain components from the materials. The supercritical entrained extraction device for total flavonoids from Eucommia ulmoides leaves is a special equipment using supercritical CO 2 fluid technology, mainly used for efficiently extracting the total flavonoid components from Eucommia ulmoides leaves.

[0003] The patent document with the publication number CN221998942U, a supercritical entrained extraction device for total flavonoids from Eucommia ulmoides leaves, includes a supercritical carbon dioxide fluid supply part, a supercritical flavonoid extraction part, and a carbon dioxide collection part connected in sequence. The supercritical carbon dioxide fluid supply part is used to generate supercritical carbon dioxide fluid, and after mixing the supercritical carbon dioxide fluid and the entrainer, it supplies the mixture of supercritical carbon dioxide fluid and the entrainer to the supercritical flavonoid extraction part. The supercritical flavonoid extraction part is used to extract total flavonoids from Eucommia ulmoides leaves, and the carbon dioxide collection part is used to recover the carbon dioxide discharged from the supercritical flavonoid extraction part. It realizes the effective extraction of total flavonoids from Eucommia ulmoides leaves, ensures the activity of total flavonoids, and reduces the cost of the supercritical extraction process.

[0004] In the actual use process of the supercritical entrained extraction device for total flavonoids from Eucommia ulmoides leaves proposed in the above patent document, during the dissolution reaction of Eucommia ulmoides leaves with the supercritical carbon dioxide mixed fluid, it is impossible to make the mixed fluid contact fully with Eucommia ulmoides leaves, which easily leads to uneven contact between some Eucommia ulmoides leaves in the extraction tank and the mixed fluid, affecting the dissolution effect and reducing the extraction efficiency of the dissolution solution. Therefore, we design a supercritical entrained extraction device for total flavonoids from Eucommia ulmoides leaves. Summary of the Invention

[0005] The purpose of the present invention is to provide a supercritical entrained extraction device for total flavonoids from Eucommia ulmoides leaves to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: An extraction device for total flavonoids from Eucommia ulmoides leaves by supercritical entrainment, comprising a fluid supply mechanism and an extraction mechanism. The fluid supply mechanism includes a mixing tank, inside which a stirring pipe is rotatably arranged. A plurality of strip-shaped shells are fixedly arranged on the surface of the stirring pipe, and a plurality of nozzles are fixedly embedded on the surface of the strip-shaped shells. The extraction mechanism includes an extraction tank. A feeding pipe is fixedly arranged between the extraction tank and the mixing tank. A dispersion plate in the shape of a funnel is fixedly connected to the inner wall of the extraction tank. A discharge round hole is opened at the bottom end of the dispersion plate. A driving sleeve is rotatably arranged on the inner top wall of the extraction tank. The bottom end of the driving sleeve extends into the discharge round hole, and a sealing block that can move up and down is arranged at the bottom end of the driving sleeve. The size of the sealing block matches that of the discharge round hole. Two extension brackets are fixedly connected to the surface of the driving sleeve, and a rolling roller is fixedly arranged on the surface of the extension brackets. The rolling roller is slidably connected to the surface of the dispersion plate.

[0007] Preferably, a fluid supply pipe is fixedly embedded at the bottom end of the driving sleeve. A limiting through hole matching the fluid supply pipe is opened on the surface of the sealing block. The sealing block is slidably connected to the surface of the fluid supply pipe through the limiting through hole. Two symmetrically positioned guide rods are fixedly connected to the upper surface of the sealing block. The top ends of the guide rods extend into the driving sleeve. Two sliding holes matching the guide rods are opened at the bottom end of the driving sleeve. The guide rods are slidably connected to the inner walls of the sliding holes.

[0008] Preferably, the top end of the driving sleeve extends above the extraction tank, and an electric telescopic rod is fixedly arranged at the top of the driving sleeve. The telescopic end of the electric telescopic rod extends into the driving sleeve and is fixedly connected to a movable push rod. A circular blocking block is fixedly connected to the bottom end of the movable push rod. The size of the circular blocking block matches that of the driving sleeve. The top ends of the guide rods are fixedly connected to the lower surface of the circular blocking block. The circular blocking block is used to block the port of the fluid supply pipe.

[0009] Preferably, two symmetrically positioned rotating arms are fixedly arranged on the surface of the driving sleeve. A plurality of spray heads are fixedly embedded on the lower surface of the rotating arms. The rotating arms are hollow shell structures inside, and one end of the rotating arms extends into the driving sleeve. The rotating arms communicate with the inside of the driving sleeve. The two rolling rollers are symmetrically distributed on both sides of the driving sleeve.

[0010] Preferably, a fluid delivery pump is fixedly arranged on the lower surface of the extraction tank. The output end of the fluid delivery pump extends into the extraction tank and is fixedly connected to a diversion pipe. The top end of the diversion pipe is rotatably connected to the bottom end of the fluid supply pipe, and the output end of the diversion pipe extends into the fluid supply pipe.

[0011] Preferably, one end of the feed pipe away from the mixing tank is fixedly connected to the input end of the fluid delivery pump, and one end of the feed pipe away from the fluid delivery pump extends to the interior of the mixing tank, and a switch valve is fixedly provided on the surface of the feed pipe.

[0012] Preferably, a first driving motor is fixedly provided on the upper surface of the extraction tank, an output shaft of the first driving motor is fixedly connected to a driving gear, a driven gear is fixedly provided on the top of the driving sleeve, a position of the driven gear corresponds to the driving gear, and the driving gear is meshed with the driven gear.

[0013] Preferably, a second drive motor is fixedly provided on the upper surface of the mixing tank, a drive synchronous wheel is fixedly provided on the output shaft of the second drive motor, the top end of the stirring tube extends to the outside of the mixing tank, and a driven synchronous wheel is fixedly provided on the top of the stirring tube, and a transmission belt is provided between the drive synchronous wheel and the driven synchronous wheel.

[0014] Preferably, a carbon dioxide recovery box is fixedly connected to the upper surface of the mixing tank, a de-impurity filter and a refrigerator are arranged inside the carbon dioxide recovery box, and a booster pump is fixedly arranged on the back of the carbon dioxide recovery box, an input conduit and an output conduit are fixedly embedded in the upper surface of the carbon dioxide recovery box, an end of the output conduit away from the carbon dioxide recovery box extends to the interior of the stirring tube, and the output conduit is rotatably connected to the top of the stirring tube, an exhaust pipe is fixedly embedded in the upper surface of the extraction tank, an end of the input conduit away from the carbon dioxide recovery box is fixedly connected to the output end of the exhaust pipe, and an exhaust control valve is fixedly arranged on the surface of the exhaust pipe.

[0015] Preferably, a discharge square tube is fixedly embedded in the bottom plate of the extraction tank, a trapezoidal block is inserted and installed inside the discharge square tube, a sealing cover is fixedly connected to the end of the trapezoidal block, a feed port is opened on the upper surface of the extraction tank, a sealing cover plate is rotatably provided on the outside of the feed port, a rubber sealing block is fixedly provided on the lower surface of the sealing cover plate, the size of the rubber sealing block matches the feed port, an air pressure detection tube is fixedly provided on the upper surface of the extraction tank, a pressure gauge is fixed on the top of the air pressure detection tube, and an entrainer input tube and a gas input tube are fixedly embedded on the upper surface of the mixing tank.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1). The supercritical entrained extraction device for total flavonoids from Eucommia ulmoides leaves can crush the Eucommia ulmoides leaves on the surface of the dispersion plate by setting a dispersion plate and rolling rollers inside the extraction tank. The first driving motor can drive the driving sleeve to rotate, thereby driving the two rolling rollers to roll and crush the Eucommia ulmoides leaves on the surface of the dispersion plate. At the same time, the driving sleeve drives the rotating arm to rotate, and then the supercritical carbon dioxide mixed fluid is sprayed on the surface of the Eucommia ulmoides leaves on the surface of the dispersion plate by the nozzles on the surface of the rotating arm, so that the mixed fluid fully reacts with the Eucommia ulmoides leaves. At the same time, through the regulation of a certain pressure and temperature inside the extraction tank, the dissolving ability of the carbon dioxide mixed fluid is utilized, which is convenient for the staff to extract total flavonoids from the Eucommia ulmoides leaf solution. Since the supercritical carbon dioxide fluid is a colorless, odorless and non-toxic gas under normal conditions, after being separated from the extraction components, there is no solvent residue at all, which can effectively avoid the residue of solvent toxicity under the traditional solvent extraction conditions, and at the same time prevent the poisoning of the human body and environmental pollution during the extraction process.

[0017] (2). The supercritical entrained extraction device for total flavonoids from Eucommia ulmoides leaves can drive the stirring tube and the strip-shaped shell to rotate in the mixing tank by setting a stirring tube and a strip-shaped shell inside the mixing tank. At the same time, the carbon dioxide liquid recovered in the carbon dioxide recovery box can be re-introduced into the mixing tank, and the liquid carbon dioxide is evenly distributed into the mixing tank by several nozzles on the surface of the strip-shaped shell, so that the liquid carbon dioxide and the entrainer can fully and evenly contact and mix, which is beneficial to improving the quality of the carbon dioxide solvent. At the same time, it is convenient to recover and utilize the excess carbon dioxide after the dissolution reaction in the extraction tank, reducing the cost of the manufacturing process. Brief Description of the Drawings

[0018] Figure 1 is the overall front view structural schematic diagram of the present invention; Figure 2 is the overall top view structural schematic diagram of the present invention; Figure 3 is the front sectional structural schematic diagram of the carbon dioxide recovery box in the present invention; Figure 4 is the front sectional structural schematic diagram of the mixing tank in the present invention; Figure 5 is the front sectional structural schematic diagram of the extraction tank in the present invention; Figure 6 is the front sectional structural schematic diagram of the fluid supply mechanism and the extraction mechanism in the present invention; Figure 7 is Figure 2 the enlarged structural schematic diagram at A in Figure 8 is Figure 6 the enlarged structural schematic diagram at B in In the figure: 1. Fluid supply mechanism; 2. Extraction mechanism; 3. Feed pipe; 4. Fluid transfer pump; 5. On-off valve; 6. Carbon dioxide recovery box; 7. Impurity removal filter screen; 8. Refrigerator; 9. Booster pump; 10. Input conduit; 11. Output conduit; 12. Exhaust pipe; 13. Exhaust control valve; 14. Discharge square pipe; 15. Trapezoidal block; 16. Sealing cover plate; 17. Pressure gauge; 18. Entrainer input pipe; 19. Gas input pipe; 101. Mixing tank; 102. Stirring pipe; 103. Strip-shaped shell; 104. Nozzle; 105. Second driving motor; 106. Driving synchronous pulley; 107. Driven synchronous pulley; 108. Transmission belt; 201. Extraction tank; 202. Dispersion plate; 203. Discharge round hole; 204. Driving sleeve; 205. Plugging block; 206. Extension bracket; 207. Rolling roller; 208. Fluid supply pipe; 209. Guide rod; 210. Electric telescopic rod; 211. Movable push rod; 212. Circular block; 213. Rotating arm; 214. Sprinkler head; 216. Diversion pipe; 217. First driving motor; 218. Driving gear; 219. Driven gear; 220. Electric heater. Specific implementation mode

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1 - 8 , the present invention provides a technical solution: a supercritical entrainer extraction device for Eucommia ulmoides leaves, including a fluid supply mechanism 1 and an extraction mechanism 2. The fluid supply mechanism 1 includes a mixing tank 101, and an entrainer input pipe 18 and a gas input pipe 19 are fixedly embedded on the upper surface of the mixing tank 101.

[0021] Please refer to Figure 4 , a stirring pipe 102 is rotatably arranged inside the mixing tank 101, and a plurality of strip-shaped shells 103 are fixedly arranged on the surface of the stirring pipe 102, and a plurality of nozzles 104 are fixedly embedded on the surface of the strip-shaped shells 103.

[0022] It should be noted that by arranging a stirring tube 102 and a number of strip-shaped shells 103 inside the mixing tank 101, during use, the second drive motor 105 can be used to drive the drive synchronous pulley 106 to rotate, thereby driving the driven synchronous pulley 107 and the stirring tube 102 to rotate, so as to drive a number of strip-shaped shells 103 to rotate in the mixing tank 101. At the same time, the carbon dioxide liquid recovered in the carbon dioxide recovery box 6 can be re-introduced into the mixing tank 101, and the liquid carbon dioxide is evenly distributed into the mixing tank 101 by a number of nozzles 104 on the surface of the strip-shaped shell 103, enabling the liquid carbon dioxide and the entrainer to fully and evenly contact and mix, which is beneficial to improving the quality of the carbon dioxide solvent. At the same time, it is convenient to recover and utilize the excess carbon dioxide in the extraction tank 201 after the dissolution reaction, reducing the cost of the manufacturing process.

[0023] Please refer to Figure 2 and Figure 3 As shown in the figure, a carbon dioxide recovery box 6 is fixedly connected to the upper surface of the mixing tank 101. An impurity removal filter screen 7 and a refrigerator 8 are arranged inside the carbon dioxide recovery box 6. A booster pump 9 is fixedly arranged on the back of the carbon dioxide recovery box 6. An input conduit 10 and an output conduit 11 are fixedly embedded in the upper surface of the carbon dioxide recovery box 6. One end of the output conduit 11 away from the carbon dioxide recovery box 6 extends into the interior of the stirring tube 102, and the output conduit 11 is rotatably connected to the top end of the stirring tube 102. An exhaust pipe 12 is fixedly embedded in the upper surface of the extraction tank 201. One end of the input conduit 10 away from the carbon dioxide recovery box 6 is fixedly connected to the output end of the exhaust pipe 12. An exhaust control valve 13 is fixedly arranged on the surface of the exhaust pipe 12.

[0024] By arranging the exhaust pipe 12, the exhaust control valve 13 on the surface of the exhaust pipe 12 can be opened to produce a pressure reduction effect inside the extraction tank 201, so that the decompressed carbon dioxide is converted into a gas. Then, the gas is introduced into the carbon dioxide recovery box 6 through the input conduit 10, and the gas is purified and filtered by the filter screen in the carbon dioxide recovery box 6 to remove impurities in the gas. Then, the carbon dioxide gas is refrigerated and pressurized by the refrigerator 8 and the booster pump 9 to convert the carbon dioxide into a liquid state, so as to store more carbon dioxide and facilitate subsequent recovery and utilization.

[0025] It should be noted that since supercritical carbon dioxide fluid is a colorless, odorless, and non-toxic gas under normal conditions, after being separated from the extracted components, there is no residue of the solvent at all, which can effectively avoid the residue of solvent toxicity under the conditions of traditional solvent extraction. At the same time, it also prevents the poisoning of the human body and environmental pollution during the extraction process.

[0026] It should be noted that a second drive motor 105 is fixedly arranged on the upper surface of the mixing tank 101. A drive synchronous pulley 106 is fixedly arranged on the output shaft of the second drive motor 105. The top end of the stirring pipe 102 extends to the outside of the mixing tank 101, and a driven synchronous pulley 107 is fixedly arranged at the top of the stirring pipe 102. A transmission belt 108 is arranged between the drive synchronous pulley 106 and the driven synchronous pulley 107.

[0027] Please refer to Figure 1 and Figure 5 As shown in the figure, the extraction mechanism 2 includes an extraction tank 201. A pressure detection pipe is fixedly arranged on the upper surface of the extraction tank 201, and a pressure gauge 17 is fixed at the top end of the pressure detection pipe. A feeding pipe 3 is fixedly arranged between the extraction tank 201 and the mixing tank 101. One end of the feeding pipe 3 far from the mixing tank 101 is fixedly connected to the input end of a fluid delivery pump 4, and the end of the feeding pipe 3 far from the fluid delivery pump 4 extends into the mixing tank 101. A switching valve 5 is fixedly arranged on the surface of the feeding pipe 3.

[0028] It should be noted that a discharge square pipe 14 is fixedly embedded in the bottom plate of the extraction tank 201. A trapezoidal plug 15 is inserted and installed inside the discharge square pipe 14, and a sealing cover is fixedly connected to the end of the trapezoidal plug 15.

[0029] Please refer to Figure 6 As shown in the figure, a feeding port is formed on the upper surface of the extraction tank 201. A sealing cover plate 16 is rotatably arranged outside the feeding port, and a rubber sealing block is fixedly arranged on the lower surface of the sealing cover plate 16. The size of the rubber sealing block matches that of the feeding port.

[0030] Please refer to Figure 7 As shown in the figure, a dispersion plate 202 in the shape of a funnel is fixedly connected to the inner wall of the extraction tank 201. A discharge round hole 203 is formed at the bottom end of the dispersion plate 202. A driving sleeve 204 is rotatably arranged on the inner top wall of the extraction tank 201. A first drive motor 217 is fixedly arranged on the upper surface of the extraction tank 201. A drive gear 218 is fixedly connected to the output shaft of the first drive motor 217. A driven gear 219 is fixedly arranged at the top of the driving sleeve 204. The position of the driven gear 219 corresponds to that of the drive gear 218, and the drive gear 218 meshes with the driven gear 219.

[0031] Please refer to Figure 5 As shown in the figure, the bottom end of the driving sleeve 204 extends into the discharge round hole 203, and a blocking block 205 that can move up and down is arranged at the bottom end of the driving sleeve 204. The size of the blocking block 205 matches that of the discharge round hole 203. Two extension brackets 206 are fixedly connected to the surface of the driving sleeve 204, and a rolling roller 207 is fixedly arranged on the surface of the extension brackets 206. The rolling roller 207 is slidably connected to the surface of the dispersion plate 202.

[0032] By arranging a dispersion plate 202 and rolling rollers 207 inside the extraction tank 201, the first driving motor 217 can be used to drive the driving sleeve 204 to rotate, thereby driving the two rolling rollers 207 to roll and crush the Eucommia ulmoides leaves on the surface of the dispersion plate 202. At the same time, the driving sleeve 204 drives the rotating arm 213 to rotate, and then the supercritical carbon dioxide mixed fluid is sprayed on the surface of the Eucommia ulmoides leaves on the surface of the dispersion plate 202 by the spray heads 214 on the surface of the rotating arm 213, so that the mixed fluid fully reacts with the Eucommia ulmoides leaves. At the same time, through the regulation of a certain pressure and temperature inside the extraction tank 201, the dissolution ability of the carbon dioxide mixed fluid is utilized, thereby facilitating the staff to extract total flavonoids from the Eucommia ulmoides leaf solution.

[0033] It should be noted that a fluid delivery pump 4 is fixedly arranged on the lower surface of the extraction tank 201. The output end of the fluid delivery pump 4 extends into the extraction tank 201 and is fixedly connected with a diversion pipe 216. The top end of the diversion pipe 216 is rotatably connected to the bottom end of the fluid supply pipe 208, and the output end of the diversion pipe 216 extends into the fluid supply pipe 208.

[0034] It should be noted that two symmetrically arranged rotating arms 213 are fixedly arranged on the surface of the driving sleeve 204. A plurality of spray heads 214 are fixedly embedded on the lower surface of the rotating arm 213. The rotating arm 213 is a hollow shell structure inside, and one end of the rotating arm 213 extends into the driving sleeve 204. The rotating arm 213 is internally connected with the driving sleeve 204. The two rolling rollers 207 are symmetrically distributed on both sides of the driving sleeve 204.

[0035] Please refer to Figure 8 At the bottom end of the driving sleeve 204, a fluid supply pipe 208 is fixedly embedded. A limiting through hole matching the fluid supply pipe 208 is opened on the surface of the plugging block 205. The plugging block 205 is slidably connected to the surface of the fluid supply pipe 208 through the limiting through hole. Two symmetrically arranged guide rods 209 are fixedly connected to the upper surface of the plugging block 205. The top ends of the guide rods 209 extend into the driving sleeve 204. Two sliding holes matching the guide rods 209 are opened at the bottom end of the driving sleeve 204. The guide rods 209 are slidably connected to the inner walls of the sliding holes.

[0036] It should be noted that the top end of the driving sleeve 204 extends above the extraction tank 201, and an electric telescopic rod 210 is fixedly arranged at the top of the driving sleeve 204. The telescopic end of the electric telescopic rod 210 extends into the driving sleeve 204 and is fixedly connected with a movable push rod 211. The bottom end of the movable push rod 211 is fixedly connected with a circular blocking block 212. The size of the circular blocking block 212 matches that of the driving sleeve 204. The top ends of the guide rods 209 are fixedly connected to the lower surface of the circular blocking block 212. The circular blocking block 212 is used to block the port of the fluid supply pipe 208.

[0037] It should be noted that by providing discharge round holes 203 at the bottom of the dispersion plate 202, when rolling the raw materials on the surface of the dispersion plate 202, the circular baffle 212 is located above the fluid supply pipe 208, and at the same time, the plugging block 205 is located inside the discharge round hole 203. The plugging block 205 can be used to close the discharge round hole 203. After the dissolution reaction is completed, the electric telescopic rod 210 is started to drive the movable push rod 211 to move downward. The movable push rod 211 drives the circular baffle 212 to descend to the bottom of the drive sleeve 204, and the circular baffle 212 is used to block and seal the end of the fluid supply pipe 208. At the same time, the two guide rods 209 drive the plugging block 205 to move downward to the lower part of the discharge round hole 203, achieving the effect of opening the discharge round hole 203. Then, the dissolution liquid on the surface of the dispersion plate 202 can be discharged from the discharge round hole 203 into the bottom of the extraction tank 201, and the discharge square pipe 14 is opened to collect the dissolution liquid, which is convenient for subsequent staff to extract the substances in the dissolution liquid.

[0038] Working principle: When in use, first put Eucommia ulmoides leaves into the dispersion plate 202 in the extraction tank 201 from the feed port. Then, open the entrainer input pipe 18 and the gas input pipe 19 at the top of the mixing tank 101. Use the gas input pipe 19 to input carbon dioxide gas into the mixing tank 101, and input the entrainer (ethanol or water) into the mixing tank 101. Then, use the second drive motor 105 to drive the stirring pipe 102 to rotate, and then drive several strip-shaped shells 103 on the surface of the stirring pipe 102 to stir the mixed materials, so that the entrainer and carbon dioxide are fully mixed. Then, open the on-off valve 5 on the surface of the feed pipe 3, and at the same time start the fluid delivery pump 4 to input the mixed fluid into the extraction tank 201. At the same time, use the electric heater 220 to heat the inside of the extraction tank 201, so that carbon dioxide changes its properties at a temperature of 31 °C and a pressure higher than the critical pressure Pc = 72.9 atm. Its density is close to that of a liquid, and its viscosity is close to that of a gas, thus achieving the effect of a superfluid. Then, use the fluid supply pipe 208 to input the mixed fluid into the two rotating arms 213, and then use several nozzles 214 on the surface of the rotating arms 213 to spray the fluid on the surface of the dispersion plate 202. At the same time, use the first drive motor 217 to drive the drive sleeve 204 to rotate, and the drive sleeve 204 drives the nozzles 214 to rotate and spray, so that the mixed fluid can fully contact with the Eucommia ulmoides leaves, which can improve the dissolution effect on the Eucommia ulmoides leaves. After the dissolution is completed, use the electric telescopic rod 210 to drive the plugging block 205 to open the discharge round hole 203 downward, so that the dissolution also enters the bottom of the extraction tank 201 from the discharge round hole 203. At the same time, perform a pressure reduction operation on the inside of the extraction tank 201. Under the pressure reduction effect, carbon dioxide is separated from the dissolution liquid, and the carbon dioxide is recovered into the carbon dioxide recovery box 6 through the exhaust pipe 12, realizing the recovery and utilization of carbon dioxide.

[0039] All the standard parts used in the present invention can be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt the conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machines, parts and equipment all adopt the conventional models in the prior art. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0040] The present invention and its implementation manners have been described above. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and design, without creative efforts, a structural manner and an embodiment similar to the technical solution without departing from the purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A supercritical entrainment extraction device for Eucommia ulmoides leaves, comprising a fluid supply mechanism (1) and an extraction mechanism (2), characterized in that: The fluid supply mechanism (1) comprises a mixing tank (101), a stirring tube (102) being rotatably arranged inside the mixing tank (101), a plurality of strip-shaped shells (103) being fixedly arranged on the surface of the stirring tube (102), and a plurality of nozzles (104) being fixedly embedded on the surface of the strip-shaped shells (103); The extraction mechanism (2) comprises an extraction tank (201), a feed pipe (3) is fixedly arranged between the extraction tank (201) and the mixing tank (101), a funnel-shaped dispersion disk (202) is fixedly connected to the inner wall of the extraction tank (201), a discharge circular hole (203) is opened at the bottom end of the dispersion disk (202), a driving sleeve (204) is rotatably arranged on the inner top wall of the extraction tank (201), the bottom end of the driving sleeve (204) extends to the inside of the discharge circular hole (203), and a blocking block (205) that can move up and down is arranged at the bottom end of the driving sleeve (204), the size of the blocking block (205) matches the discharge circular hole (203), and two extension brackets (206) are fixedly connected to the surface of the driving sleeve (204), and a rolling roller (207) is fixedly arranged on the surface of the extension bracket (206), and the rolling roller (207) is slidably connected to the surface of the dispersion disk (202).

2. The supercritical entrainment extraction device for total flavonoids from Eucommia ulmoides leaves according to claim 1, characterized in that: A fluid supply pipe (208) is fixedly embedded at the bottom end of the driving sleeve (204); a limiting through hole matching the fluid supply pipe (208) is provided on the surface of the blocking block (205); the blocking block (205) is slidably connected to the surface of the fluid supply pipe (208) via the limiting through hole; two guide rods (209) symmetrically positioned are fixedly connected to the upper surface of the blocking block (205); the top end of the guide rod (209) extends to the interior of the driving sleeve (204); two sliding holes matching the guide rod (209) are provided at the bottom end of the driving sleeve (204); the guide rod (209) is slidably connected to the inner wall of the sliding hole.

3. A supercritical entrainment extraction device for total flavonoids from Eucommia ulmoides leaves according to claim 2, characterized in that: The top end of the driving sleeve (204) extends to the top of the extraction tank (201), and an electric telescopic rod (210) is fixedly arranged on the top of the driving sleeve (204). The telescopic end of the electric telescopic rod (210) extends to the inside of the driving sleeve (204) and is fixedly connected to a movable push rod (211). The bottom end of the movable push rod (211) is fixedly connected to a circular stopper (212), and the size of the circular stopper (212) matches that of the driving sleeve (204). The top end of the guide rod (209) is fixedly connected to the lower surface of the circular stopper (212), and the circular stopper (212) is used to block the port of the fluid supply pipe (208).

4. The supercritical entrainment extraction device for total flavonoids from Eucommia ulmoides leaves according to claim 3, characterized in that: The surface of the driving sleeve (204) is fixedly provided with two rotating arms (213) whose positions are symmetrical to each other. A plurality of nozzles (214) are fixedly embedded on the lower surface of the rotating arm (213). The rotating arm (213) is a shell structure with a hollow interior. One end of the rotating arm (213) extends into the interior of the driving sleeve (204). The rotating arm (213) and the interior of the driving sleeve (204) are interconnected. The two rolling rollers (207) are symmetrically distributed on both sides of the driving sleeve (204).

5. The supercritical entrainment extraction device for total flavonoids from Eucommia ulmoides leaves according to claim 4, characterized in that: A fluid delivery pump (4) is fixedly arranged on the lower surface of the extraction tank (201); the output end of the fluid delivery pump (4) extends to the interior of the extraction tank (201) and is fixedly connected to a flow guide tube (216); the top end of the flow guide tube (216) is rotatably connected to the bottom end of the fluid supply tube (208), and the output end of the flow guide tube (216) extends to the interior of the fluid supply tube (208).

6. The supercritical entrainment extraction device for total flavonoids from Eucommia ulmoides leaves according to claim 5, characterized in that: One end of the feed pipe (3) away from the mixing tank (101) is fixedly connected to the input end of the fluid delivery pump (4), and one end of the feed pipe (3) away from the fluid delivery pump (4) extends to the interior of the mixing tank (101), and a switch valve (5) is fixedly provided on the surface of the feed pipe (3).

7. The supercritical entrainment extraction device for total flavonoids from Eucommia ulmoides leaves according to claim 1, characterized in that: A first driving motor (217) is fixedly disposed on the upper surface of the extraction tank (201); an output shaft of the first driving motor (217) is fixedly connected to a driving gear (218); a driven gear (219) is fixedly disposed on the top of the driving sleeve (204); the position of the driven gear (219) corresponds to that of the driving gear (218), and the driving gear (218) is meshed with the driven gear (219).

8. The supercritical entrainment extraction device for total flavonoids from Eucommia ulmoides leaves according to claim 1, characterized in that: A second driving motor (105) is fixedly arranged on the upper surface of the mixing tank (101), a driving synchronous wheel (106) is fixedly arranged on the output shaft of the second driving motor (105), the top end of the stirring tube (102) extends to the outside of the mixing tank (101), and a driven synchronous wheel (107) is fixedly arranged on the top of the stirring tube (102), and a transmission belt (108) is arranged between the driving synchronous wheel (106) and the driven synchronous wheel (107).

9. The supercritical entrainment extraction device for total flavonoids from Eucommia ulmoides leaves according to claim 1, characterized in that: A carbon dioxide recovery box (6) is fixedly connected to the upper surface of the mixing tank (101), a de-impurity filter (7) and a refrigerator (8) are arranged inside the carbon dioxide recovery box (6), and a booster pump (9) is fixedly arranged on the back of the carbon dioxide recovery box (6). An input conduit (10) and an output conduit (11) are fixedly embedded in the upper surface of the carbon dioxide recovery box (6), an end of the output conduit (11) away from the carbon dioxide recovery box (6) extends to the inside of the stirring tube (102), and the output conduit (11) is rotatably connected to the top of the stirring tube (102). An exhaust pipe (12) is fixedly embedded in the upper surface of the extraction tank (201), an end of the input conduit (10) away from the carbon dioxide recovery box (6) is fixedly connected to the output end of the exhaust pipe (12), and an exhaust control valve (13) is fixedly arranged on the surface of the exhaust pipe (12).

10. The supercritical entrainment extraction device for total flavonoids from Eucommia ulmoides leaves according to claim 1, characterized in that: The bottom plate of the extraction tank (201) is fixedly embedded with a discharge square tube (14), the interior of the discharge square tube (14) is inserted with a trapezoidal block (15), the end of the trapezoidal block (15) is fixedly connected with a sealing cover, the upper surface of the extraction tank (201) is provided with a feed port, the outside of the feed port is rotatably provided with a sealing cover plate (16), the lower surface of the sealing cover plate (16) is fixedly provided with a rubber sealing block, the size of the rubber sealing block matches the feed port, the upper surface of the extraction tank (201) is fixedly provided with an air pressure detection tube, the top end of the air pressure detection tube is fixed with an air pressure gauge (17), and the upper surface of the mixing tank (101) is fixedly embedded with an entrainer input tube (18) and a gas input tube (19).

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