A supercritical extraction device for traditional Chinese medicine

Abstract

The utility model relates to traditional Chinese medicine technology field especially relates to a kind of traditional Chinese medicine supercritical extraction device, including extraction kettle, in the top of the extraction kettle from left to right is equipped with feed pipe, discharge pipe, pressure relief valve and temperature sensor, it is characterized in that, the extraction kettle is fixed on extraction support, stirring mixing device is equipped in the top of the extraction kettle, its right side is equipped with solvent adding device, the solvent adding device includes solvent delivery pipe, the solvent delivery pipe extends to the bottom of extraction kettle, a plurality of annular transport branch pipes are connected on the solvent delivery pipe, a plurality of output pipes are equipped on the inner wall of the annular transport branch pipe. A kind of traditional Chinese medicine supercritical extraction device of the utility model has higher extraction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of traditional Chinese medicine technology, and in particular to a supercritical extraction device for traditional Chinese medicine. Background Technology

[0002] Supercritical fluid extraction of traditional Chinese medicine is a technology that uses supercritical fluid as a solvent to efficiently extract active ingredients from raw materials of traditional Chinese medicine. It has advantages such as high efficiency, environmental protection, and safety, and has become an important means for the modernization of traditional Chinese medicine and the upgrading of the traditional Chinese medicine industry.

[0003] In existing supercritical fluid extraction devices for traditional Chinese medicine, the material to be extracted and the solvent are directly placed into the extraction vessel for extraction. The solvent and material do not mix and react sufficiently, resulting in low extraction efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a supercritical extraction device for traditional Chinese medicine preparations, which has a high extraction efficiency.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A supercritical extraction device for traditional Chinese medicine preparations includes an extraction vessel. From left to right, an inlet pipe, an outlet pipe, a pressure relief valve, and a temperature sensor are arranged on the top of the extraction vessel. The extraction vessel is fixed on an extraction support. A stirring and mixing device is provided on the top of the extraction vessel, and a solvent adding device is provided on its right side. The solvent adding device includes a solvent delivery pipe that extends to the bottom of the extraction vessel. Several annular delivery branches are connected to the solvent delivery pipe, and several output pipes are provided on the inner wall of the annular delivery branches.

[0007] The stirring and mixing device includes a stirring and mixing motor, which is vertically downward mounted on the top of the extraction vessel. A stirring and mixing rod is fixed on the rotor of the stirring and mixing motor, and several stirring and mixing blades are fixed on the stirring and mixing rod.

[0008] A pressure gauge is provided on the front side of the stirring and mixing motor.

[0009] As an improvement, a circulation pipe is provided on the left side of the extraction vessel, with the inlet of the circulation pipe located at the bottom of the extraction vessel and the outlet located at the top of the extraction vessel. A circulation pump is provided on the circulation pipe.

[0010] As an improvement: the top of the stirring rod is rotatably fitted inside the first sleeve, and its bottom is rotatably fitted inside the second sleeve.

[0011] As an improvement, a heating sleeve is fitted on the outer wall of the extraction vessel, with a steam inlet pipe at the top and a steam outlet pipe at the bottom.

[0012] As an improvement, the agitating mixing blades are provided with breaking teeth.

[0013] As an improvement: a discharge pipe is provided at the bottom of the extraction vessel, and a first electric valve and a discharge pump are sequentially provided on the discharge pipe extending in the material conveying direction.

[0014] In summary, this utility model has the following beneficial effects:

[0015] 1. When the material is placed into the extraction vessel, the pressurized solvent is delivered to the solvent delivery pipe and the corresponding annular delivery branch pipe, and then evenly delivered to the interior of the extraction vessel through the output pipe. At the same time, the stirring and mixing motor drives the stirring and mixing fan blades to rotate, which can quickly achieve the mixing and extraction of solvent and material.

[0016] 2. The mixing blades are equipped with crushing teeth, which can break up agglomerated materials, allowing them to fully mix with the solvent and thus improve extraction efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model, the accompanying drawings used in the description of the embodiments or prior art will be briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the overall structure of a supercritical extraction device for traditional Chinese medicine.

[0019] Figure 2 This is a schematic cross-sectional view of a supercritical extraction device for traditional Chinese medicine.

[0020] The components include: 1. Extraction vessel; 2. Feed pipe; 3. Discharge pipe; 4. Pressure relief valve; 5. Temperature sensor; 6. Extraction support; 7. Solvent delivery pipe; 8. Circular delivery branch pipe; 9. Output pipe; 10. Stirring and mixing motor; 11. Stirring and mixing rod; 12. Stirring and mixing fan blade; 13. Pressure gauge; 14. Circulation pipeline; 15. Circulation pump; 16. First sleeve; 17. Second sleeve; 18. Heating sleeve; 19. Steam inlet pipe; 20. Steam outlet pipe; 21. Crushing teeth; 22. Discharge pipe; 23. First electric valve; 24. Second electric valve; 25. Discharge pump; 26. Control panel. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings.

[0022] Please refer to Figures 1-2A supercritical extraction device for traditional Chinese medicine includes an extraction vessel 1. From left to right, an inlet pipe 2, an outlet pipe 3, a pressure relief valve 4, and a temperature sensor 5 are arranged on the top of the extraction vessel 1. A second electric valve 24 is provided on the inlet pipe 2. The outlet pipe 3 is connected to an external pressure reducing and separation device. This device is an existing device that can be used to separate the solvent and extract after extraction.

[0023] The extraction vessel 1 is fixed on the extraction support 6. A stirring and mixing device is provided at the top of the extraction vessel 1, and a solvent adding device is provided on its right side. The solvent adding device includes a solvent delivery pipe 7, which extends to the bottom of the extraction vessel 1. Several annular delivery branches 8 are connected to the solvent delivery pipe 7. Several output pipes 9 are provided on the inner wall of the annular delivery branches 8. The input end of the solvent delivery pipe 7 is connected to an external pressurizing device, which is connected to a solvent tank. The pressurizing device is an existing device that can pressurize the solvent and deliver it to the extraction vessel 1.

[0024] The stirring and mixing device includes a stirring and mixing motor 10, which is vertically downward mounted on the top of the extraction vessel 1. A stirring and mixing rod 11 is fixed on the rotor of the stirring and mixing motor 10, and several stirring and mixing fan blades 12 are fixed on the stirring and mixing rod 11.

[0025] A pressure gauge 13 is provided on the front side of the stirring and mixing motor 10.

[0026] In this embodiment, when the material is placed into the extraction vessel 1, the pressurized solvent is transported to the solvent delivery pipe 7 and the corresponding annular delivery branch pipe 8, and then evenly transported to the interior of the extraction vessel 1 through the output pipe 9. At the same time, the stirring and mixing motor 10 drives the stirring and mixing fan blade 12 to rotate, which can quickly achieve the mixing and extraction of solvent and material.

[0027] A circulation pipe 14 is provided on the left side of the extraction vessel 1. The input end of the circulation pipe 14 is located at the bottom of the extraction vessel 1, and its output end is located at the top of the extraction vessel 1. A circulation pump 15 is provided on the circulation pipe 14.

[0028] The top of the stirring rod 11 is rotatably fitted inside the first sleeve 16, and its bottom is rotatably fitted inside the second sleeve 17. In this embodiment, the first sleeve 16 and the second sleeve 17 can improve the stability of the stirring and mixing of the stirring rod 11.

[0029] A heating sleeve 18 is fitted onto the outer wall of the extraction vessel 1. A steam inlet pipe 19 is provided at the top of the heating sleeve 18, and a steam outlet pipe 20 is provided at the bottom. In this embodiment, by delivering steam into the heating sleeve 18, the material and solvent can be heated. The steam inlet pipe 19 is connected to a steam input pump.

[0030] The mixing blades 12 are equipped with crushing teeth 21. In this embodiment, the crushing teeth 21 can crush agglomerated materials and improve extraction efficiency.

[0031] A discharge pipe 22 is provided at the bottom of the extraction vessel 1, and a first electric valve 23 and a discharge pump 25 are sequentially provided on the discharge pipe 22 extending in the material conveying direction.

[0032] A control panel 26 is provided on the outer wall of the extraction vessel 1. The control panel 26 is connected to a pressure relief valve 4, a temperature sensor 5, a pressure gauge 13, a circulation pump 15, a discharge pump 25, a first electric valve 23, a second electric valve 24, and an external steam input pump, etc. The status and operation of the corresponding equipment can be controlled through the control panel 26. This is the existing technical solution and will not be described in detail here.

[0033] Working principle: The raw materials of traditional Chinese medicine to be extracted are placed into the extraction vessel 1 through the feed pipe 2, and the pressurized solvent is transported to the solvent conveying pipe 7 and the corresponding annular conveying branch pipe 8, and then evenly transported into the interior of the extraction vessel 1 through the output pipe 9.

[0034] The stirring and mixing motor 10 is started to drive the stirring and mixing fan blades 12 to rotate, so as to achieve full and rapid mixing of solvent and material, thereby improving extraction efficiency.

[0035] During the extraction process, steam is delivered to the heating sleeve 18 to heat the solvent and the raw materials of traditional Chinese medicine. With the cooperation of temperature sensor 5 and control panel 26, the temperature inside the extraction vessel 1 is kept constant. With the cooperation of pressure relief valve 4, pressure gauge 13 and control panel 26, the pressure inside the extraction vessel 1 is kept constant. Maintaining constant temperature and pressure are existing technologies and will not be described in detail here.

[0036] During the extraction process, the crushing tooth 21 rotates with the stirring and mixing fan blade 12 to crush the agglomerated material, so that the crushed and decomposed material can quickly and fully contact and mix with the solvent to achieve extraction and thus improve the extraction efficiency. During extraction, the circulating pump 15 can transport and churn the solvent and raw materials of traditional Chinese medicine from the bottom of the extraction vessel 1 in real time, which improves the heating efficiency and the contact and mixing efficiency between the solvent and the raw materials.

[0037] After extraction, the raw material is transported along with the solvent through the discharge pipe 3 to the vacuum separation equipment for separation. After extraction, the first electric valve 23 can be opened to start the discharge pump 25 to discharge the waste through the discharge pipe 22.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A supercritical fluid extraction device for traditional Chinese medicine preparations, comprising an extraction vessel, wherein an inlet pipe, an outlet pipe, a pressure relief valve, and a temperature sensor are sequentially arranged from left to right on the top of the extraction vessel, characterized in that, The extraction vessel is fixed on the extraction support. A stirring and mixing device is provided at the top of the extraction vessel, and a solvent adding device is provided on its right side. The solvent adding device includes a solvent delivery pipe that extends to the bottom of the extraction vessel. Several annular delivery branches are connected to the solvent delivery pipe, and several output pipes are provided on the inner wall of the annular delivery branches. The stirring and mixing device includes a stirring and mixing motor, which is vertically downward mounted on the top of the extraction vessel. A stirring and mixing rod is fixed on the rotor of the stirring and mixing motor, and several stirring and mixing blades are fixed on the stirring and mixing rod. A pressure gauge is provided on the front side of the stirring and mixing motor.

2. The supercritical fluid extraction apparatus for traditional Chinese medicine preparations according to claim 1, characterized in that, A circulation pipe is provided on the left side of the extraction vessel. The inlet of the circulation pipe is located at the bottom of the extraction vessel, and the outlet is located at the top of the extraction vessel. A circulation pump is provided on the circulation pipe.

3. The supercritical fluid extraction apparatus for traditional Chinese medicine preparations according to claim 1, characterized in that, The top of the stirring rod is rotatably fitted inside the first sleeve, and its bottom is rotatably fitted inside the second sleeve.

4. The supercritical fluid extraction apparatus for traditional Chinese medicine preparations according to claim 1, characterized in that, A heating sleeve is fitted on the outer wall of the extraction vessel. A steam inlet pipe is provided at the top of the heating sleeve, and a steam outlet pipe is provided at the bottom.

5. The supercritical fluid extraction apparatus for traditional Chinese medicine preparations according to claim 1, characterized in that, The agitating and mixing fan blades are provided with breaking teeth.

6. The supercritical fluid extraction apparatus for traditional Chinese medicine preparations according to claim 1, characterized in that, A discharge pipe is provided at the bottom of the extraction vessel, and a first electric valve and a discharge pump are sequentially provided on the discharge pipe extending in the material conveying direction.

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