Efficient supercritical extraction equipment

Abstract

The invention discloses efficient supercritical extraction equipment, and relates to the technical field of supercritical extraction, the efficient supercritical extraction equipment comprises an extraction kettle, an entrainment assembly, a material placement tray, a material distribution bundle and the like, the entrainment assembly uniformly sprays an entrainer into a material through an entrainer pipe, and impacts and turns over the material through a spraying hole; a material throwing film on the material containing tray is made of an elastic material and connected with a flexible magnetic strip, the material can be jacked up to be turned over under the adsorption effect of a fan blade magnetic plate, the contact performance of the material and supercritical fluid is improved, and a material distribution beam generates a turning effect in the material through the design of an extension beam and a movable material ball; the equipment is simple in structure and convenient to operate, the extraction efficiency and the extraction depth can be remarkably improved, and meanwhile, the energy consumption and the cost are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of supercritical extraction, and more specifically to a highly efficient supercritical extraction device. Background Art

[0002] In the chemical engineering and pharmaceutical industries, supercritical extraction technology is favored for its high efficiency, environmental protection and ability to selectively extract target compounds. Although the traditional supercritical extraction method has achieved effective extraction of target compounds to a certain extent, it still has many shortcomings in extraction efficiency, material utilization and extraction depth. Especially when dealing with complex materials or requiring efficient extraction of trace components, traditional methods often seem to be unable to cope with the situation.

[0003] In order to solve these problems, researchers continue to explore and optimize supercritical extraction technology. Among them, the use of entrainers has become one of the important means to improve extraction efficiency. Entrainers can significantly improve the extraction capacity of target compounds by changing the solubility properties of supercritical fluids. However, how to make the entrainer evenly distributed in the material and fully contact with the material has become a key factor restricting the extraction effect.

[0004] In addition, the size, shape and distribution of the material also have an important impact on the extraction effect. In traditional extraction methods, the material is often in the form of particles or powders, which limits the penetration and diffusion of the entrainer and supercritical fluid inside the material. At the same time, the degree of tumbling and mixing of the material during the extraction process also directly affects the extraction efficiency and extraction depth.

[0005] Therefore, in view of the above-mentioned technical problems, it is necessary to provide an efficient supercritical extraction equipment. Summary of the invention

[0006] The object of the present invention is to provide an efficient supercritical extraction device to solve the above-mentioned problems.

[0007] In order to achieve the above purpose, the technical solution provided by an embodiment of the present invention is as follows:

[0008] A highly efficient supercritical extraction device comprises an extraction kettle, an entrainment assembly, a material distribution bundle and a driving assembly, wherein a fluid pipe and a discharge pipe are fixedly installed at the upper and lower ends of the extraction kettle respectively, the fluid pipe is used to convey a supercritical fluid, and the discharge pipe is used to output an extracted mixture, the entrainment assembly comprises an entrainment agent pipe for conveying an entrainment agent, the entrainment agent pipe is fixedly installed just above the extraction kettle and extends to the inner side of the extraction kettle, a communicating entrainment promotion ball is installed at the lower end of the entrainment agent pipe, the material placement tray is fixedly connected to the inside of the extraction kettle for placing materials to be extracted, and the material placement tray is installed just below the entrainment promotion ball, the driving assembly comprises a servo motor, a rotating shaft is provided inside the extraction kettle, and the rotating shaft is fixedly connected to the output end of the servo motor through the rotating shaft, the upper limit rotation of the entrainment agent pipe is provided with a rotating sleeve, the outer end of the rotating sleeve is fixedly connected to a driven gear, and the driving gear is meshed with the driven gear, the outer end of the rotating sleeve is also fixedly connected to a plurality of fan blades distributed in an annular array, and a magnetic plate is fixedly connected to one of the fan blades.

[0009] As a further improvement of the present invention, the entrainment promoting ball includes a positioning hemisphere, an injection hemisphere and a clamping column. The positioning hemisphere and the injection hemisphere are symmetrically connected up and down. The clamping column is fixedly connected to the lower end of the injection hemisphere. The injection hemisphere is provided with a plurality of evenly distributed injection holes. The entrainment agent pipe transports the entrainment agent into the positioning hemisphere, and then injects it into the outer material through the injection holes on the injection hemisphere, which helps the entrainment agent to have better contact with the material and can also impact and flip the material to achieve more comprehensive contact.

[0010] As a further improvement of the present invention, an injection hole is fixedly connected to the inner wall of the injection hemisphere, and the height of the material placed on the material tray is lower than the upper surface of the injection hemisphere. The injection hole is used to prevent the material or part of the substance from entering the injection hemisphere, which will not cause waste of material and can also prevent blockage to ensure the continuous extraction process.

[0011] As a further improvement of the present invention, the material loading tray includes a concave sieve plate, a material loading film layer and a mounting base. The mounting base is fixedly installed at the center above the concave sieve plate, and the mounting base matches the clamping column. The center of the material loading film layer is fixedly connected to the mounting base, and the edge is fixedly connected to the inner wall of the extraction kettle. The concave sieve plate plays a role in fixing the material loading film layer and the mounting base. The mounting base is used to install the entrainment promoting ball, and the material loading film layer is used to place the material, and can cooperate with the driving component to undergo a certain degree of deformation, so that the material can be turned over more fully, thereby improving the contact between the material and the supercritical fluid, thereby ensuring a good extraction effect.

[0012] As a further improvement of the present invention, the material placement film layer includes a throwing film, and a plurality of evenly distributed through holes are opened on the outer side area of ​​the throwing film. A plurality of flexible magnetic strips distributed in a circular array are fixedly connected to the back side of the throwing film. The throwing film is used as a carrier to place materials. The opened through holes allow the extracted mixture to pass through and then be collected later. The flexible magnetic strips can correspond to the magnetic plates on the fan blades. When the fan blades rotate, the magnetic plates adsorb them through the flexible magnetic strips in turn, so that the corresponding flexible magnetic strips lift the materials in the corresponding area and throw them upwards, so that they are in full contact with the supercritical fluid delivered, thereby improving the extraction effect.

[0013] As a further improvement of the present invention, the throwing film is made of elastic material, and the concave screen plate is made of hard material.

[0014] As a further improvement of the present invention, the width of the portion of the throwing film where no through holes are formed is greater than half the arc length of the cross section of the injection hemisphere. This ensures that when the throwing film is deformed under the top action of the flexible magnetic strip, the throwing film in the inner area can block part of the injection holes on the injection hemisphere. At this time, the entraining agent inside the injection hemisphere will impact the material in other areas at a faster flow rate. The impact effect is also more conducive to the dispersion of the entraining agent, so that it is converted into smaller droplets under the impact, which is conducive to more complete contact with the material. At the same time, the greater impact force also helps to improve the turning effect of the material.

[0015] As a further improvement of the present invention, a plurality of material distribution bundles distributed in a circular array are fixedly installed inside the extraction kettle, and the material distribution bundles extend into the interior of the material. The material distribution bundles can cooperate with the supercritical fluid delivered in and the entrainment agent impacted from the entrainment promoting balls to produce a tumbling effect inside the material, thereby promoting the dispersion of the entrainment agent and the contact extraction between the material and the supercritical fluid.

[0016] As a further improvement of the present invention, the material distribution beam includes an extension beam and a moving material ball, the moving material ball is fixedly connected to the end of the extension beam, and a plurality of evenly distributed protruding particles are fixedly connected to the outer surface of the moving material ball. The extension beam can not only produce elastic vibration under the action of the supercritical fluid, and then act on the moving material ball to make it flip inside the material, but also play a certain role in breaking up the material when the material is thrown into the air by the throwing film, thereby promoting full contact between the material and the supercritical fluid. On the one hand, the moving material ball vibrates inside the material by means of the extension beam, and on the other hand, its lightweight material characteristics can be impacted and vibrated by the entraining agent, and the protruding particles are more conducive to the dispersion of the entraining agent.

[0017] As a further improvement of the present invention, the extension beams and the protruding particles are both made of elastic materials, and the moving material balls are made of lightweight materials.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] (1) The entrainment assembly in this scheme transports the entrainer into the positioning hemisphere through the entrainer tube, and then sprays it into the outer material through the spray hole on the spray hemisphere. This not only achieves uniform distribution of the entrainer in the material, but also impacts and turns the material through the spraying action, so that the entrainer and the material are fully in contact. This contact mode not only improves the utilization rate of the entrainer, but also promotes the diffusion and penetration of the entrainer in the material, thereby improving the extraction efficiency.

[0020] (2) In this scheme, when the magnetic plate on the fan blade rotates, it will be adsorbed by the flexible magnetic strips in turn, so that the corresponding flexible magnetic strips lift the materials in the corresponding area and throw them upwards, which not only realizes the turning and mixing of the materials, but also allows the materials to fully contact with the supercritical fluid delivered during the turning process. At the same time, the through holes opened on the throwing membrane allow the extracted mixture to pass through and be collected later, thereby improving the utilization rate of the materials and the extraction depth.

[0021] (3) The material distribution beam in this scheme can cooperate with the supercritical fluid delivered and the entrainer impacted from the entrainment promotion ball to produce a tumbling effect inside the material, which not only promotes the dispersion of the entrainer and the contact extraction between the material and the supercritical fluid, but also further breaks up and mixes the material through the raised particles on the moving ball, thereby improving the extraction efficiency and extraction depth. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a partial cross-sectional view of the present invention;

[0024] Figure 3 The entrainment of the present invention promotes the explosion of the ball Figure 1 ;

[0025] Figure 4 The explosion of the material tray of the present invention Figure 1 ;

[0026] Figure 5 It is a schematic structural diagram of the throwing film of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the sub-bundle of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the throwing film of the present invention before and after partial deformation.

[0029] Description of the numbers in the figure:

[0030] 1. Extraction kettle; 2. Fluid pipe; 3. Discharge pipe; 4. Entrainment agent pipe; 5. Entrainment promotion ball; 501. Positioning hemisphere; 502. Injection hemisphere; 503. Snap-on column; 504. Filter screen; 505. Injection hole; 6. Material tray; 601. Concave sieve plate; 602. Material film layer; 6021. Throwing film; 6022. Through hole; 6023. Flexible magnetic strip; 603. Mounting base; 7. Material distribution beam; 701. Extension beam; 702. Moving material ball; 703. Protruding particles; 8. Rotating shaft; 9. Driving gear; 10. Driven gear; 11. Rotating sleeve; 12. Fan blade; 13. Magnetic plate; 14. Servo motor. DETAILED DESCRIPTION

[0031] An implementation of the present application is described in detail below with reference to the accompanying drawings.

[0032] The first implementation method:

[0033] See also Figure 1-7 , an efficient supercritical extraction device, comprising an extraction kettle 1, an entrainment assembly, a material distribution beam 7 and a driving assembly, wherein a fluid pipe 2 and a discharge pipe 3 are fixedly installed at the upper and lower ends of the extraction kettle 1, respectively, the fluid pipe 2 is used to convey the supercritical fluid, and the discharge pipe 3 is used to output the extracted mixture, the entrainment assembly comprises an entrainment agent pipe 4 for conveying the entrainment agent, the entrainment agent pipe 4 is fixedly installed just above the extraction kettle 1 and extends to the inner side of the extraction kettle 1, and a connected entrainment promotion ball 5 is installed at the lower end of the entrainment agent pipe 4, a material placement tray 6 is fixedly connected to the inside of the extraction kettle 1, and is used to place the material to be extracted, and the material placement tray 6 is installed just below the entrainment promotion ball 5, and the driving assembly comprises a servo motor 1 4. A rotating shaft 8 is provided inside the extraction kettle 1, and the rotating shaft 8 is fixedly connected to the output end of the servo motor 14 through the rotating shaft 8. The entrainer tube 4 is provided with a rotating sleeve 11 for upper limit rotation, and can be ensured to rotate in situ by opening an annular groove. The outer end of the rotating sleeve 11 is fixedly connected to a driven gear 10, and the driving gear 9 is meshed with the driven gear 10. The outer end of the rotating sleeve 11 is also fixedly connected to a plurality of fan blades 12 distributed in an annular array, and a magnetic plate 13 is fixedly connected to one of the fan blades 12. The magnetic plate 13 can be a permanent magnet or an electromagnet to ensure that the magnetic force is sufficient to adsorb the flexible magnet 6023 for a top effect on the basis of placing the material.

[0034] The entrainment promoting ball 5 includes a positioning hemisphere 501, an injection hemisphere 502 and a clamping column 503. The positioning hemisphere 501 and the injection hemisphere 502 are symmetrically connected up and down. The clamping column 503 is fixedly connected to the lower end of the injection hemisphere 502. The injection hemisphere 502 is provided with a plurality of evenly distributed injection holes 505. The entrainment agent pipe 4 transports the entrainment agent into the positioning hemisphere 501, and then injects it into the outer material through the injection holes 505 on the injection hemisphere 502, which helps the entrainment agent to have better contact with the material, and at the same time can impact and flip the material, thereby achieving more comprehensive contact.

[0035] An injection hole 505 is fixedly connected to the inner wall of the injection hemisphere 502. The height of the material placed on the material tray 6 is lower than the upper surface of the injection hemisphere 502. The injection hole 505 is used to prevent the material or part of the substance from entering the injection hemisphere 502, which will not cause waste of material and can also prevent blockage to ensure the continuous extraction process.

[0036] The material loading tray 6 includes a concave sieve plate 601, a material loading film layer 602 and a mounting base 603. The mounting base 603 is fixedly installed at the center above the concave sieve plate 601, and the mounting base 603 matches the clamping column 503. The material loading film layer 602 is fixedly connected to the mounting base 603 at the center, and is fixedly connected to the inner wall of the extraction kettle 1 at the edge. The concave sieve plate 601 plays a role in fixing the material loading film layer 602 and the mounting base 603. The mounting base 603 is used to install the entrainment promoting ball 5, and is similar to a filter for allowing materials to pass through. The material loading film layer 602 is used to place materials, and can cooperate with the driving component to undergo a certain degree of deformation, so that the materials can be turned over more fully, thereby improving the contact between the materials and the supercritical fluid, thereby ensuring a good extraction effect.

[0037] The material placement film layer 602 includes a throwing film 6021, and a plurality of evenly distributed through holes 6022 are opened on the outer area of ​​the throwing film 6021. A plurality of flexible magnetic strips 6023 distributed in a circular array are fixedly connected to the back of the throwing film 6021. The throwing film 6021 is used as a carrier for placing materials. The opened through holes 6022 can allow the extracted mixture to pass through and then be collected later. The flexible magnetic strip 6023 can correspond to the magnetic plate 13 on the fan blade 12. When the fan blade 12 rotates, the magnetic plate 13 passes through the flexible magnetic strip 6023 in turn to adsorb it, so that the corresponding flexible magnetic strip 6023 lifts the material in the corresponding area and throws it upwards, which is just in full contact with the supercritical fluid delivered, thereby improving the extraction effect.

[0038] The throwing film 6021 is made of elastic material, such as elastic fiber or elastic silica gel, and the concave screen plate 601 is made of hard material, such as metal material.

[0039] The width of the portion of the throwing film 6021 where no through hole 6022 is provided is greater than half the arc length of the cross section of the injection hemisphere 502. This ensures that when the throwing film 6021 is deformed under the top action of the flexible magnetic strip 6023, the throwing film 6021 in the inner area can block part of the injection holes 505 on the injection hemisphere 502. At this time, the entrained agent inside the injection hemisphere 502 will impact the material in other areas at a faster flow rate. The impact effect is more conducive to the dispersion of the entrained agent, so that it is converted into smaller droplets under the impact, which is conducive to more complete contact with the material. At the same time, the greater impact force also helps to improve the turning effect of the material.

[0040] A plurality of material distribution beams 7 distributed in a circular array are fixedly installed inside the extraction kettle 1, and the material distribution beams 7 extend into the interior of the material. The material distribution beams 7 can cooperate with the supercritical fluid delivered and the entrainment agent impacted from the entrainment promoting balls 5 to produce a tumbling effect inside the material, thereby promoting the dispersion of the entrainment agent and the contact extraction between the material and the supercritical fluid.

[0041] The material distribution beam 7 includes an extension beam 701 and a moving material ball 702. The moving material ball 702 is fixedly connected to the end of the extension beam 701. A plurality of evenly distributed protruding particles 703 are fixedly connected to the outer surface of the moving material ball 702. The extension beam 701 can not only produce elastic vibration under the action of the supercritical fluid, and then act on the moving material ball 702 to make it turn over inside the material, but also can play a certain role in breaking up the material when it is thrown into the air by the throwing film 6021, so as to promote full contact between the material and the supercritical fluid. On the one hand, the moving material ball 702 vibrates inside the material by means of the extension beam 701, and on the other hand, its light material characteristic can be impacted and vibrated by the entraining agent, and the protruding particles 703 are more conducive to the dispersion of the entraining agent.

[0042] The extension beam 701 and the protruding particles 703 are both made of elastic material, and the moving ball 702 is made of light material, such as plastic.

[0043] When in use, the supercritical fluid is transported into the extraction kettle 1 by the fluid pipe 2, and the entrainer is transported into the entrainer pipe 4, and then the servo motor 14 is started synchronously to drive the driving gear 9 to rotate, and the rotating sleeve 11 is driven to rotate by the meshing action between the driving gear 9 and the driven gear 10. At this time, the fan blade 12 also starts to rotate synchronously, and the supercritical fluid is accelerated to flow toward the opening area of ​​the throwing film 6021 by the centrifugal effect and the downward propulsion force. At this time, the entrainer enters the entrainment promotion ball 5, and relies on the injection hole 505 on the injection hemisphere 502 to spray and impact the material on the outside, so as to have better contact with the material and cause the material to flip within a certain range. At the same time, when the magnetic plate 13 passes through the corresponding flexible magnetic strip 6023, it is adsorbed to cause it to lift the throwing film 602 in the corresponding area. 1, and the material on the upper side will be thrown into the air for dispersion and make good contact with the supercritical fluid flowing down. When the material and the supercritical fluid contact in the air, they will be affected by the extension beam 701 for secondary dispersion, further improving the extraction effect after contact. In addition, the throwing film 6021 will block part of the injection hole 505 when deformed, so as to enhance its flow velocity impact on other areas. Therefore, the deformation of the throwing film 6021 can not only enhance the contact effect between the material in the corresponding area and the supercritical fluid, but also indirectly enhance the contact effect between other areas and the entrainer. When the magnetic plate 13 rotates to other areas, the material that just fully contacts with the entrainer is thrown into the air for extraction. By cyclically rotating and repeating the above process, deep extraction can be completed in a shorter time, effectively improving the extraction efficiency and quality.

[0044] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0045] In addition, it should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that those skilled in the art can understand.

Claims

1. An efficient supercritical extraction device, characterized in that: include: An extraction kettle (1), wherein a fluid pipe (2) and a discharge pipe (3) are respectively fixedly installed at the upper and lower ends of the extraction kettle (1), wherein the fluid pipe (2) is used to transport the supercritical fluid, and the discharge pipe (3) is used to output the extracted mixture; An entrainment assembly, comprising an entrainer pipe (4) for conveying an entrainer, wherein the entrainer pipe (4) is fixedly installed just above the extraction kettle (1) and extends to the inner side of the extraction kettle (1), and a communicating entrainment promoting ball (5) is installed at the lower end of the entrainer pipe (4); (6), the material placement tray (6) is fixedly connected to the inside of the extraction kettle (1) and is used to place the material to be extracted, and the material placement tray (6) is installed directly below the entrainment promotion ball (5); The driving assembly comprises a servo motor (14). A rotating shaft (8) is provided inside the extraction kettle (1), and the rotating shaft (8) is fixedly connected to the output end of the servo motor (14) via the rotating shaft (8). The entrainer tube (4) is provided with a rotating sleeve (11) for upper limit rotation. The outer end of the rotating sleeve (11) is fixedly connected to a driven gear (10), and the driving gear (9) is meshingly connected to the driven gear (10). The outer end of the rotating sleeve (11) is also fixedly connected to a plurality of fan blades (12) distributed in an annular array, and a magnetic plate (13) is fixedly connected to one of the fan blades (12).

2. An efficient supercritical extraction equipment according to claim 1, characterized in that: The entrainment promoting ball (5) comprises a positioning hemisphere (501), an injection hemisphere (502) and a clamping column (503); the positioning hemisphere (501) and the injection hemisphere (502) are symmetrically connected up and down; the clamping column (503) is fixedly connected to the lower end of the injection hemisphere (502); and the injection hemisphere (502) is provided with a plurality of uniformly distributed injection holes (505).

3. An efficient supercritical extraction equipment according to claim 2, characterized in that: The inner wall of the spray hemisphere (502) is fixedly connected with a spray hole (505), and the height of the material placed on the material placement tray (6) is lower than the upper surface of the spray hemisphere (502).

4. The efficient supercritical extraction equipment according to claim 3, characterized in that: The material placement tray (6) comprises a concave sieve plate (601), a material placement film layer (602) and a mounting base (603); the mounting base (603) is fixedly mounted at the center above the concave sieve plate (601), and the mounting base (603) matches the clamping column (503); the center of the material placement film layer (602) is fixedly connected to the mounting base (603), and the edge is fixedly connected to the inner wall of the extraction kettle (1).

5. The efficient supercritical extraction equipment according to claim 4, characterized in that: The material placement film layer (602) comprises a material throwing film (6021), a plurality of evenly distributed through holes (6022) are provided on the outer side of the material throwing film (6021), and a plurality of flexible magnetic strips (6023) distributed in a ring array are fixedly connected to the back side of the material throwing film (6021).

6. The efficient supercritical extraction equipment according to claim 5, characterized in that: The throwing film (6021) is made of elastic material, and the concave screen plate (601) is made of hard material.

7. An efficient supercritical extraction device according to claim 6, characterized in that: The width of the portion of the material-throwing film (6021) where no through hole (6022) is provided is greater than half the arc length of the cross section of the jet hemisphere (502).

8. The efficient supercritical extraction equipment according to claim 1, characterized in that: A plurality of material distribution beams (7) distributed in a circular array are fixedly installed inside the extraction kettle (1), and the material distribution beams (7) extend into the interior of the material.

9. The efficient supercritical extraction equipment according to claim 8, characterized in that: The sub-material bundle (7) comprises an extension bundle (701) and a moving material ball (702), wherein the moving material ball (702) is fixedly connected to the end of the extension bundle (701), and a plurality of evenly distributed protruding particles (703) are fixedly connected to the outer surface of the moving material ball (702).

10. The efficient supercritical extraction equipment according to claim 9, characterized in that: The extension beam (701) and the protruding particles (703) are both made of elastic material, and the moving material ball (702) is made of lightweight material.

Images