Flower essential oil supercritical extraction device

Abstract

The invention discloses a flower essential oil supercritical extraction device which comprises an extraction kettle and a separation kettle, an extraction cavity is formed in the extraction kettle, the top of the extraction kettle is in threaded connection with a sealing cover, the sealing cover is rotationally connected with a piezoelectric ceramic screw rod, and the upper side of the sealing cover is fixedly connected with a mounting box; a motor is fixedly connected to the side wall of the inner top of the mounting box, an output shaft of the motor is fixedly connected with a disc, a piezoelectric ceramic screw rod is fixedly connected to the bottom side of the disc, a current alternating device is arranged on the disc, and a plurality of fixing rods are fixedly connected to the inner side wall of the extraction kettle; a net cylinder is fixedly connected between the multiple fixing rods. According to the flower essential oil extraction device, continuous dynamic supercritical extraction of flowers can be achieved, the flower essential oil extraction effect is improved, the piezoelectric ceramic screw rod can vibrate to generate vibration, the flower essential oil extraction effect is further improved, and the extraction efficiency is greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of supercritical extraction, in particular to a supercritical extraction device for flower essential oil. Background Art

[0002] The existing method for extracting flower essential oils is to send supercritical carbon dioxide into an extraction kettle to fully contact with the dried flowers. The carbon dioxide fluid selectively dissolves the extracted oil and is then taken out through a pipeline. The carbon dioxide is then vaporized and separated from the oil by a decompression device, and high-quality flower essential oil can be obtained in the separation kettle.

[0003] The existing flower essential oil extraction rate generally depends on the extraction effect of the extraction kettle and the separation effect of the separator. Due to the characteristics of supercritical fluid, it is easy to achieve a high separation rate by changing the temperature and pressure operation, and even adopt multi-stage separation and distillation to improve the separation effect. However, the vast majority of extraction kettles currently still use a simple static extraction method of holding materials. Due to the accumulation of materials, it is difficult for the supercritical fluid to fully contact them, resulting in a low single-pass extraction rate. Repeated extraction methods are needed to improve the extraction rate, which greatly reduces the extraction efficiency. Summary of the Invention

[0004] The present invention provides a flower essential oil supercritical extraction device to solve the problems raised in the above background technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The cam is secured to the top of the extraction kettle and is secured to a location where the cam is secured. The cam is secured to a location where the cam is secured. The cam is secured to a location where the cam is secured.

[0007] Preferably, the current alternating device is used to generate alternating current to both ends of the piezoelectric ceramic screw rod, so that the piezoelectric ceramic screw rod vibrates, thereby improving the extraction effect of the flower essential oil.

[0008] Preferably, the current alternating device includes a plurality of second conductive sheets and a first conductive sheet, and the plurality of second conductive sheets and the plurality of first conductive sheets are fixedly connected in sequence on the circumferential side wall of the disk in an alternating manner; a conductive rod is fixedly connected to the center of the piezoelectric ceramic spiral rod, and an insulating layer is provided on the outside of the conductive rod; the top and bottom ends of the piezoelectric ceramic spiral rod are respectively fixedly connected to a first electrode sheet and a second electrode sheet; each second conductive sheet is electrically connected to the conductive rod through a second wire, and each first conductive sheet is electrically connected to the first electrode sheet through a first wire; the first wire and the second wire are both located inside the disk; two conductive heads are fixedly connected to the inner side wall of the mounting box, and one end of the two conductive heads respectively rests on the side walls of the two adjacent second conductive sheets and the first conductive sheet, and an induced current generating device is provided on the conductive head.

[0009] Preferably, the induced current generating device includes a plurality of first magnetic poles and a second magnetic pole, wherein the plurality of first magnetic poles are fixedly connected to the upper side of the disk in a circular array, and the plurality of second magnetic poles are fixedly connected to the inner wall of the mounting box, and the plurality of second magnetic poles are commonly wound with induction wires, and the two ends of the induction wires are respectively electrically connected to two conductive heads.

[0010] Preferably, the first electrode sheet and the second electrode sheet are made of conductive copper.

[0011] Preferably, the disc is made of insulating material.

[0012] Preferably, the bottom of the extraction chamber is hemispherical.

[0013] Preferably, valves are provided on the side walls of the output pipe and the essential oil discharge pipe.

[0014] Preferably, the steps of using the flower essential oil supercritical extraction device are:

[0015] The first step is to put the dried flower pieces into the extraction chamber, and then screw the cover on the top of the extraction kettle to seal it;

[0016] In the second step, supercritical carbon dioxide fluid is introduced into the extraction chamber through an input tube, and a motor is driven simultaneously. The motor drives the piezoelectric ceramic screw to rotate via a circular disc. The rotation of the piezoelectric ceramic screw causes the dried flower fragments at the bottom of the extraction chamber to gradually rise along the mesh tube until they are discharged from the top of the mesh tube, thereby generating a dynamic flow of the dried flower fragments in the extraction chamber, allowing the supercritical carbon dioxide fluid to fully contact the dried flower fragments.

[0017] In the third step, while the disc rotates, the disc can drive the multiple first magnetic columns on the upper side to cut the magnetic flux lines of the second magnetic columns, so that the induction wires on the second magnetic columns generate induced currents. The positive and negative ends of the induced current of the induction wires are electrically connected to the two conductive heads. When the disc rotates, the two conductive heads will be alternately electrically connected to the second conductive sheet and the first conductive sheet respectively. The current on the first conductive sheet can be input to the first electrode sheet at the top of the piezoelectric ceramic spiral rod through the first wire. The current on the second conductive sheet can be input to the second electrode sheet at the bottom of the piezoelectric ceramic spiral rod in turn through the second wire and the conductive rod. The two ends of the piezoelectric ceramic spiral rod can vibrate due to the current. The vibration of the piezoelectric ceramic spiral rod can make the supercritical carbon dioxide fluid more efficient in extracting flowers.

[0018] In the fourth step, the supercritical carbon dioxide fluid selectively dissolves and extracts the flower oil and is taken out through the output pipe into the separation kettle. After the supercritical carbon dioxide fluid containing oil enters the separation kettle and is decompressed, the supercritical carbon dioxide fluid forms gas and is discharged from the outlet pipe. The remaining flower essential oil is stored in the separation kettle.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention can not only realize continuous dynamic supercritical extraction of flowers and improve the extraction effect of flower essential oils, but also make the piezoelectric ceramic spiral rod vibrate to generate vibration, further improving the extraction effect of flower essential oils and greatly reducing the extraction efficiency.

[0021] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the description, the following preferred embodiments of the present invention are described in detail with reference to the accompanying drawings. The specific implementation methods of the present invention are given in detail by the following embodiments and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of a supercritical extraction device for flower essential oils proposed by the present invention;

[0024] Figure 2 This is a schematic diagram of the front cross-sectional structure of a supercritical extraction device for flower essential oils proposed by the present invention;

[0025] Figure 3 Schematic diagram of the structure between the disc and the piezoelectric ceramic spiral rod in the present invention;

[0026] Figure 4Schematic diagram of the structure of the disc in the present invention;

[0027] Figure 5 Schematic diagram of the front cross-sectional structure of the disc and the piezoelectric ceramic spiral rod in the present invention;

[0028] Figure 6 for Figure 5 A schematic diagram of the partially enlarged structure of the middle part;

[0029] Figure 7 for Figure 5 A schematic diagram of the partially enlarged structure of B in the middle;

[0030] Figure 8 Schematic diagram of the top cross-sectional structure of the disc in the present invention;

[0031] Figure 9 Schematic diagram of the top cross-sectional structure of the installation box of the present invention;

[0032] Figure 10 Schematic diagram of the connection between the conductive head, the sensing wire and the plurality of second magnetic poles in the present invention;

[0033] Figure 11 It is a schematic diagram of the top cross-sectional structure of the extraction kettle in the present invention.

[0034] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0035] 1. Piezoelectric ceramic screw rod; 2. Mesh cylinder; 3. Extraction kettle; 4. Essential oil discharge pipe; 5. Air outlet pipe; 6. Separation kettle; 7. Output pipe; 8. Motor; 9. Installation box; 10. Sealing cover; 11. Extraction chamber; 12. Fixing rod; 13. Input pipe; 14. Disc; 15. Conductive rod; 16. First electrode sheet; 17. Second wire; 18. Second conductive sheet; 19. Insulation layer; 20. First wire; 21. First conductive sheet; 22. Second electrode sheet; 23. Induction wire; 24. First magnetic column; 25. Conductive head; 26. Second magnetic column. DETAILED DESCRIPTION

[0036] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples provided are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. It should be noted that the drawings are all in a very simplified form and are not to exact scale, and are only used for the purpose of conveniently and clearly illustrating the embodiments of the present invention.

[0037] See also Figures 1 to 11In an embodiment of the present invention, a supercritical extraction device for flower essential oil includes an extraction kettle 3 and a separation kettle 6. An extraction chamber 11 is provided inside the extraction kettle 3. The bottom of the extraction chamber 11 is hemispherical. A cover 10 is threadedly connected to the top of the extraction kettle 3. A piezoelectric ceramic screw rod 1 is rotatably connected to the cover 10. An installation box 9 is fixedly connected to the upper side of the cover 10. A motor 8 is fixedly connected to the inner top side wall of the installation box 9. A disc 14 is fixedly connected to the output shaft of the motor 8. The disc 14 is made of an insulating material. The piezoelectric ceramic screw rod 1 is fixedly connected to the bottom side of the disc 14. A current alternating device is provided on the disc 14.

[0038] Specifically, the current alternating device is used to generate alternating current to both ends of the piezoelectric ceramic spiral rod 1, so that the piezoelectric ceramic spiral rod 1 vibrates, thereby improving the extraction effect of the flower essential oil. The current alternating device includes a plurality of second conductive sheets 18 and a plurality of first conductive sheets 21. The plurality of second conductive sheets 18 and the plurality of first conductive sheets 21 are fixedly connected to the circumferential side wall of the disk 14 in sequence. A conductive rod 15 is fixedly connected to the center of the piezoelectric ceramic spiral rod 1, and an insulating layer 19 is provided on the outside of the conductive rod 15. The top and bottom ends of the piezoelectric ceramic spiral rod 1 are respectively fixedly connected to the first electrode sheet 16 and the second electrode sheet 22. The first electrode sheet 16 and the second electrode sheet 22 are made of conductive copper. Each second conductive sheet 18 is electrically connected to the conductive rod 15 through a second wire 17. Each first conductive sheet 21 It is electrically connected to the first electrode sheet 16 through the first wire 20, and the bottom end of the conductive rod 15 is electrically connected to the second electrode sheet 22. The first wire 20 and the second wire 17 are both located in the disk 14. Two conductive heads 25 are fixedly connected to the inner wall of the installation box 9. One end of the two conductive heads 25 respectively rests on the side walls of the two adjacent second conductive sheets 18 and the first conductive sheet 21. An induced current generating device is provided on the conductive head 25. The induced current generating device includes a plurality of first magnetic columns 24 and a second magnetic column 26. The plurality of first magnetic columns 24 are fixedly connected to the upper side of the disk 14 in a circular array, and the plurality of second magnetic columns 26 are fixedly connected to the inner wall of the installation box 9. The plurality of second magnetic columns 26 are commonly wound with an induction wire 23, and the two ends of the induction wire 23 are respectively electrically connected to the two conductive heads 25.

[0039] A plurality of fixed rods 12 are fixedly connected to the inner side wall of the extraction kettle 3, a mesh tube 2 is fixedly connected between the plurality of fixed rods 12, a piezoelectric ceramic screw rod 1 is rotatably connected in the mesh tube 2, an input pipe 13 and an output pipe 7 are fixedly connected to the side wall of the extraction kettle 3, one end of the output pipe 7 extends into the separation kettle 6, an air outlet pipe 5 is fixedly connected to the top of the separation kettle 6, an essential oil discharge pipe 4 is fixedly connected to the bottom of the side wall of the separation kettle 6, and valves are provided on the side walls of the output pipe 7 and the essential oil discharge pipe 4.

[0040] The steps of using the flower essential oil supercritical extraction device are as follows:

[0041] In the first step, the dried flower pieces are first put into the extraction chamber 11, and then the cover 10 is screwed on the top of the extraction kettle 3 to seal it, and the valve on 7 is closed;

[0042] In the second step, supercritical carbon dioxide fluid is input into the extraction chamber 11 through the input tube 13, and the motor 8 is driven at the same time. The motor 8 drives the piezoelectric ceramic screw 1 to rotate through the disk 14. The rotation of the piezoelectric ceramic screw 1 causes the dried flower fragments at the bottom of the extraction chamber 11 to gradually rise along the mesh tube 2 until they are discharged from the top of the mesh tube 2, thereby generating a dynamic flow of the dried flower fragments in the extraction chamber 11, so that the supercritical carbon dioxide fluid fully contacts the dried flower fragments.

[0043] In the third step, while the disk 14 rotates, the disk 14 can drive the multiple first magnetic columns 24 on the upper side to cut the magnetic flux lines of the second magnetic column 26, so that the induction wire 23 on the second magnetic column 26 generates an induced current. The positive and negative ends of the induced current of the induction wire 23 are electrically connected to the two conductive heads 25. When the disk 14 rotates, the two conductive heads 25 will be alternately electrically connected to the second conductive sheet 18 and the first conductive sheet 21 respectively. The current on the first conductive sheet 21 can be input to the top first electrode sheet 16 of the piezoelectric ceramic spiral rod 1 through the first wire 20, and the current on the second conductive sheet 18 can be input to the bottom second electrode sheet 22 of the piezoelectric ceramic spiral rod 1 through the second wire 17 and the conductive rod 15 in sequence. The piezoelectric ceramic spiral rod 1 is made of piezoelectric ceramic material. The two ends of the piezoelectric ceramic spiral rod 1 can vibrate when subjected to current. The vibration of the piezoelectric ceramic spiral rod 1 can make the supercritical carbon dioxide fluid more efficient in extracting flowers;

[0044] In the fourth step, after the supercritical carbon dioxide fluid selectively dissolves and extracts the flower oil, the valve on 7 is opened again, and the supercritical carbon dioxide fluid containing the flower oil is brought out through the output pipe 7 and enters the separation kettle 6. After the supercritical carbon dioxide fluid containing the oil enters the separation kettle 6 and is decompressed, the supercritical carbon dioxide fluid forms gas and is discharged from the outlet pipe 5, and the remaining flower essential oil is stored in the separation kettle 6.

[0045] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A supercritical extraction device for flower essential oil, comprising an extraction kettle (3) and a separation kettle (6), characterized in that: An extraction chamber (11) is provided inside the extraction kettle (3); a cover (10) is threadedly connected to the top of the extraction kettle (3); a piezoelectric ceramic screw rod (1) is rotatably connected to the cover (10); a mounting box (9) is fixedly connected to the upper side of the cover (10); a motor (8) is fixedly connected to the inner top side wall of the mounting box (9); a disc (14) is fixedly connected to the output shaft of the motor (8); a piezoelectric ceramic screw rod (1) is fixedly connected to the bottom side of the disc (14); and a current alternating device is provided on the disc (14). A plurality of fixed rods (12) are fixedly connected to the inner side wall of the extraction kettle (3), a net tube (2) is fixedly connected between the plurality of fixed rods (12), the piezoelectric ceramic spiral rod (1) is rotatably connected in the net tube (2), an input pipe (13) and an output pipe (7) are fixedly connected to the side wall of the extraction kettle (3), one end of the output pipe (7) extends into the separation kettle (6), an air outlet pipe (5) is fixedly connected to the top of the separation kettle (6), and an essential oil discharge pipe (4) is fixedly connected to the bottom of the side wall of the separation kettle (6).

2. The supercritical extraction device for flower essential oil according to claim 1, characterized in that: The current alternating device is used to generate alternating current to both ends of the piezoelectric ceramic spiral rod (1), so that the piezoelectric ceramic spiral rod (1) vibrates, thereby improving the extraction effect of flower essential oil.

3. The supercritical extraction device for flower essential oil according to claim 2, characterized in that: The current alternating device comprises a plurality of second conductive sheets (18) and a first conductive sheet (21), the plurality of second conductive sheets (18) and the plurality of first conductive sheets (21) being fixedly connected in sequence and staggered on the circumferential side wall of the disk (14), a conductive rod (15) being fixedly connected in the center of the piezoelectric ceramic spiral rod (1), an insulating layer (19) being provided on the outside of the conductive rod (15), a first electrode sheet (16) and a second electrode sheet (22) being fixedly connected at the top and bottom ends of the piezoelectric ceramic spiral rod (1), respectively, and a second conductive sheet (18) and a conductive rod (15) are connected to each second conductive sheet (18) via a second conductive sheet. The first conductive sheet (21) and the second conductive sheet (22) are electrically connected to each other through a first wire (17); each of the first conductive sheets (21) and the first electrode sheet (16) are electrically connected through a first wire (20); the bottom end of the conductive rod (15) is electrically connected to the second electrode sheet (22); the first wire (20) and the second wire (17) are both located in the disc (14); two conductive heads (25) are fixedly connected to the inner side wall of the installation box (9); one end of the two conductive heads (25) respectively abuts against the side walls of two adjacent second conductive sheets (18) and the first conductive sheet (21); and an induced current generating device is provided on the conductive head (25).

4. The supercritical extraction device for flower essential oil according to claim 3, characterized in that: The induced current generating device comprises a plurality of first magnetic columns (24) and a second magnetic column (26), wherein the plurality of first magnetic columns (24) are fixedly connected to the upper side of the disk (14) in a ring array, and the plurality of second magnetic columns (26) are fixedly connected to the inner wall of the installation box (9), and the plurality of second magnetic columns (26) are commonly wound with an induction wire (23), and the two ends of the induction wire (23) are respectively electrically connected to two conductive heads (25).

5. The supercritical extraction device for flower essential oil according to claim 4, characterized in that: The first electrode sheet (16) and the second electrode sheet (22) are made of conductive copper.

6. The supercritical extraction device for flower essential oil according to claim 5, characterized in that: The disc (14) is made of insulating material.

7. The supercritical extraction device for flower essential oil according to claim 6, characterized in that: The bottom of the extraction chamber (11) is arranged in a hemispherical shape.

8. The flower essential oil supercritical extraction device according to claim 7, characterized in that: Valves are provided on the side walls of the output pipe (7) and the essential oil discharge pipe (4).

9. The flower essential oil supercritical extraction device according to claim 8, characterized in that: The steps of using the flower essential oil supercritical extraction device are as follows: In the first step, dried flower pieces are first put into the extraction chamber (11), and then the cover (10) is screwed on the top of the extraction kettle (3) to seal it; In the second step, supercritical carbon dioxide fluid is input into the extraction chamber (11) through the input pipe (13), and the motor (8) is driven at the same time. The motor (8) drives the piezoelectric ceramic screw rod (1) to rotate through the disc (14). The rotation of the piezoelectric ceramic screw rod (1) can make the dried flower fragments at the bottom of the extraction chamber (11) gradually rise along the net tube (2) until they are discharged from the top of the net tube (2), thereby making the dried flower fragments in the extraction chamber (11) generate dynamic flow, so that the supercritical carbon dioxide fluid is fully in contact with the dried flower fragments; In the third step, while the disk (14) rotates, the disk (14) can drive the plurality of first magnetic columns (24) on the upper side to cut the magnetic flux lines of the second magnetic column (26), so that the induction wire (23) on the second magnetic column (26) generates an induction current, and the positive and negative ends of the induction current of the induction wire (23) are electrically connected to the two conductive heads (25). When the disk (14) rotates, the two conductive heads (25) will be alternately electrically connected to the second conductive sheet (18) and the first conductive sheet (21), respectively. The current on the first conductive sheet (21) can be input to the top first electrode sheet (16) of the piezoelectric ceramic spiral rod (1) through the first wire (20), and the current on the second conductive sheet (18) can be input to the bottom second electrode sheet (22) of the piezoelectric ceramic spiral rod (1) through the second wire (17) and the conductive rod (15) in sequence. The two ends of the piezoelectric ceramic spiral rod (1) can vibrate when subjected to the current, and the vibration of the piezoelectric ceramic spiral rod (1) can make the supercritical carbon dioxide fluid extract flowers more efficiently; In the fourth step, the supercritical carbon dioxide fluid selectively dissolves and extracts the flower oil and is taken out through the output pipe (7) into the separation kettle (6). After the supercritical carbon dioxide fluid containing oil enters the separation kettle (6) and is decompressed, the supercritical carbon dioxide fluid forms gas and is discharged from the gas outlet pipe (5), and the remaining flower essential oil is stored in the separation kettle (6).

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