Multi-stage composite supercritical fluid continuous extraction device

Abstract

The utility model discloses a multi-stage combined type supercritical fluid continuous extraction device, and relates to the technical field of extraction devices. Comprising an extraction box, a storage box, an air heater, a catalyst box and a collection box, a first connecting cover is fixed to the outer wall of the extraction box, a first spiral plate is fixed between the inner wall of the first connecting cover and the extraction box, the bottom end of the storage box fixedly communicates with a first conveying pipe, and the end of the first conveying pipe fixedly communicates with a pressurization assembly; and one side of the pressurizing assembly fixedly communicates with a second conveying pipe, one end of the second conveying pipe fixedly communicates with a third conveying pipe, and the third conveying pipe penetrates through the first connecting cover into the extraction box. According to the device, the hot-air blower is started, the hot-air blower introduces hot air into the first connecting cover through the first connecting pipe to heat the extraction box, the hot air in the first connecting cover enters the second connecting cover through the air outlet pipe to heat carbon dioxide in the third conveying pipe, and then the hot air enters the hot-air blower through the air supply pipe to be continuously heated.

Description

Technical Field

[0001] The utility model relates to the technical field of extraction devices, in particular to a multi-stage composite supercritical fluid continuous extraction device. Background Art

[0002] Separation technology plays an important role in modern industry. Supercritical fluid extraction, as an emerging separation technology, demonstrates many advantages over traditional separation technologies. With the improvement of living standards, the demand for natural foods, medicines, spices, etc. is growing. Supercritical fluid extraction technology has broad prospects. However, the existing industrial supercritical composite extraction system (Announcement No.: CN112295257B) has the following shortcomings in use:

[0003] During use, the carbon dioxide is heated by a heating component so that it becomes liquid and contacts the extraction raw material. However, the heating component can only heat the carbon dioxide that has not entered the extraction device, resulting in a low solubility of the solute in the extraction device, thereby affecting the extraction efficiency. For this reason, this patent proposes a multi-stage composite supercritical fluid continuous extraction device to solve the above problem. Utility Model Content

[0004] The purpose of the present invention is to provide a multi-stage composite supercritical fluid continuous extraction device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a multi-stage composite supercritical fluid continuous extraction device, comprising an extraction box, a storage box, a hot air blower, a catalyst box, and a collection box, wherein a first connecting cover is fixed to the outer wall of the extraction box, a first spiral plate is fixed between the inner wall of the first connecting cover and the extraction box, a first conveying pipe is fixedly connected to the bottom end of the storage box, a pressurizing assembly is fixedly connected to the end of the first conveying pipe, a second conveying pipe is fixedly connected to one side of the pressurizing assembly, a third conveying pipe is fixedly connected to one end of the second conveying pipe, the third conveying pipe passes through the first connecting cover to the extraction box, a second connecting cover is fixed to the outer wall of the third conveying pipe, a second spiral plate is fixed between the inner wall of the second connecting cover and the third conveying pipe, one end of the hot air blower is fixedly connected to the first connecting pipe, and the first connecting pipe passes through the first connecting cover.

[0006] Preferably, the bottom end of the first connecting pipe is fixedly connected to a mounting pipe, the mounting pipe is fixedly connected to the second connecting cover, the outer wall of the first connecting cover is fixedly connected to an air outlet pipe, the air outlet pipe is fixedly connected to the second connecting cover, one side of the second connecting cover is fixedly connected to an air supply pipe, and the air supply pipe is fixedly connected to the hot air blower.

[0007] Preferably, a first valve is installed on the first delivery pipe, the second delivery pipe, the first connecting pipe, the installation pipe, the air outlet pipe and the air supply pipe.

[0008] Preferably, a collecting pipe is fixedly connected between the top of the extraction box and the top of the collecting box, a cooling box is fixed to the outer wall of the collecting tube, a third connecting cover is fixed to the outer wall of the collecting box, and a cooling pipe is installed between the outer wall of the collecting box and the outer wall of the collecting tube.

[0009] Preferably, a rotating shaft is rotatably connected between the bottom inner wall and the top inner wall of the extraction box, a plurality of rotating rods are fixed to the outer wall of the rotating shaft, and a stirring rod is fixed to the bottom end of the rotating rod.

[0010] Preferably, the top of the collecting box is fixedly connected to a second connecting pipe, one end of the second connecting pipe is fixedly connected to a filter box, one side of the filter box is fixedly connected to a third connecting pipe, the third connecting pipe is fixedly connected to the storage box, the bottom end of the catalyst box is fixedly connected to a fixed pipe, the fixed pipe is fixedly connected to the extraction box, and the bottom end of the collecting box is fixedly connected to a discharge pipe.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] By starting the hot air blower, the hot air blower blows hot air into the first connecting cover through the first connecting pipe to heat the extraction box. The hot air in the first connecting cover enters the second connecting cover through the air outlet pipe to heat the carbon dioxide in the third delivery pipe. The hot air then enters the hot air blower through the air supply pipe to continue heating, so that the extraction raw materials in the extraction box and the carbon dioxide in the third delivery pipe can both be heated, thereby improving the solubility of the extraction solute in the extraction box and the extraction efficiency.

[0013] In addition, a mounting pipe is fixedly connected between the first connecting pipe and the second connecting cover, and a first valve is installed on the first connecting pipe, the air outlet pipe and the mounting pipe. In this way, when the carbon dioxide needs to be heated separately, the first valves on the first connecting pipe and the air outlet pipe can be closed, so that it can be flexibly adjusted according to needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a cross-sectional view of the extraction box of the present utility model;

[0016] Figure 3 This is a cross-sectional view of the collection box of the present utility model;

[0017] Figure 4 This is a cross-sectional view of the cooling box of the present invention.

[0018] In the figure: 1. first connecting cover; 2. storage box; 3. first conveying pipe; 4. pressurizing component; 5. second conveying pipe; 6. hot air blower; 7. first connecting pipe; 8. extraction box; 9. first spiral plate; 10. air outlet pipe; 11. third conveying pipe; 12. second connecting cover; 13. second spiral plate; 14. air supply pipe; 15. collecting pipe; 16. cooling box; 17. third connecting cover; 18. collecting box; 19. cooling pipe; 20. discharge pipe; 21. rotating shaft; 22. rotating rod; 23. stirring rod; 24. second connecting pipe; 25. filter box; 26. third connecting pipe; 27. catalyst box. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Separation technology plays an important role in modern industry. Supercritical fluid extraction, as an emerging separation technology, has many advantages over traditional separation technologies. The utility model provides a multi-stage composite supercritical fluid continuous extraction device. By setting a hot air blower 6, it can not only enter the first connecting cover 1 through the first connecting pipe 7 to heat the extraction box 8, but also enter the second connecting cover 12 through the outlet pipe 10 to heat the third delivery pipe 11, so that the extraction raw materials in the extraction box 8 and the carbon dioxide in the third delivery pipe 11 can be heated, thereby improving the solubility of the extraction solute in the extraction box 8 and the extraction efficiency.

[0021] like Figures 1-4As shown, the utility model provides a technical solution: a multi-stage composite supercritical fluid continuous extraction device, comprising an extraction box 8, a storage box 2, a hot air blower 6, a catalyst box 27, and a collection box 18. The outer wall of the extraction box 8 is fixed with a first connecting cover 1, and a first spiral plate 9 is fixed between the inner wall of the first connecting cover 1 and the extraction box 8. The bottom end of the storage box 2 is fixedly connected with a first conveying pipe 3, and the end of the first conveying pipe 3 is fixedly connected with a pressurizing component 4. One side of the pressurizing component 4 is fixedly connected with a second conveying pipe 5, and one end of the second conveying pipe 5 is fixedly connected with a third conveying pipe 11. The third conveying pipe 11 passes through the first connecting cover 1 to the extraction box 8, and the outer wall of the third conveying pipe 11 is fixed with a second connecting cover 12, and a second spiral plate 13 is fixed between the inner wall of the second connecting cover 12 and the third conveying pipe 11. One end of the hot air blower 6 is fixedly connected with a first connecting pipe 7, and the first connecting pipe 7 passes through the first connecting cover 1. The bottom end of the first connecting pipe 7 is fixedly connected to a mounting pipe, which is fixedly connected to the second connecting cover 12. The outer wall of the first connecting cover 1 is fixedly connected to an air outlet pipe 10, which is fixedly connected to the second connecting cover 12. One side of the second connecting cover 12 is fixedly connected to an air supply pipe 14, which is fixedly connected to the hot air blower 6. A first valve is installed on the first delivery pipe 3, the second delivery pipe 5, the first connecting pipe 7, the mounting pipe, the air outlet pipe 10, and the air supply pipe 14.

[0022] It should be noted that by starting the hot air blower 6, the hot air blower 6 introduces hot air into the first connecting cover 1 through the first connecting pipe 7 to heat the extraction box 8. The hot air in the first connecting cover 1 enters the second connecting cover 12 through the air outlet pipe 10 to heat the carbon dioxide in the third delivery pipe 11, and then the hot air enters the hot air blower 6 through the air supply pipe 14 to continue heating, so that the extraction raw materials in the extraction box 8 and the carbon dioxide in the third delivery pipe 11 can be heated, thereby improving the solubility and extraction efficiency of the extraction solute in the extraction box 8, and an installation pipe is fixedly connected between the first connecting pipe 7 and the second connecting cover 12, and a first valve is installed on the first connecting pipe 7, the air outlet pipe 10 and the installation pipe. In this way, when it is necessary to heat the carbon dioxide separately, the first valves on the first connecting pipe 7 and the air outlet pipe 10 can be closed, so that it can be flexibly adjusted according to needs.

[0023] like Figure 1 and Figure 3 As shown, a collecting pipe 15 is fixedly connected between the top of the extraction box 8 and the top of the collecting box 18, a cooling box 16 is fixed to the outer wall of the collecting pipe 15, a third connecting cover 17 is fixed to the outer wall of the collecting box 18, a cooling pipe 19 is installed between the outer wall of the collecting box 18 and the outer wall of the collecting pipe 15, and a check valve is installed on the collecting pipe 15.

[0024] It should be noted that the solution in the extraction box 8 is sent to the collection box 18 through the collection pipe 15, and the solution is cooled by the cooling pipe 19 to allow the effective components dissolved in the supercritical fluid to precipitate. The cooling pipe 19 is externally connected to condensed water, and the check valve can prevent carbon dioxide from flowing back.

[0025] like Figure 2 As shown, a rotating shaft 21 is rotatably connected between the bottom inner wall and the top inner wall of the extraction box 8, a plurality of rotating rods 22 are fixed to the outer wall of the rotating shaft 21, and a stirring rod 23 is fixed to the bottom end of the rotating rod 22.

[0026] It should be noted that the rotating shaft 21 drives the rotating rod 22 and the stirring rod 23 to rotate to stir the solution in the extraction box 8 so that the solution is fully mixed with the supercritical fluid.

[0027] like Figure 1 and Figure 4 As shown, the top of the collecting box 18 is fixedly connected to a second connecting pipe 24, one end of the second connecting pipe 24 is fixedly connected to a filter box 25, one side of the filter box 25 is fixedly connected to a third connecting pipe 26, the third connecting pipe 26 is fixedly connected to the storage box 2, the bottom end of the catalyst box 27 is fixedly connected to a fixed pipe, the fixed pipe is fixedly connected to the extraction box 8, the bottom end of the collecting box 18 is fixedly connected to a discharge pipe 20, and a second valve is installed on the second connecting pipe 24, the third connecting pipe 26, the fixed pipe and the discharge pipe 20.

[0028] It should be noted that after the effective components dissolved in the supercritical fluid are precipitated, the supercritical fluid will return to a gaseous state under these conditions and be recovered into the storage box 2 through the second connecting pipe 24, the filter box 25 and the third connecting pipe 26 for continued recycling.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the accompanying embodiments and their equivalents.

Claims

1. A multi-stage composite supercritical fluid continuous extraction device, comprising an extraction box (8), a storage box (2), a hot air blower (6), a catalyst box (27), and a collection box (18), characterized in that: The outer wall of the extraction box (8) is fixed with a first connecting cover (1), a first spiral plate (9) is fixed between the inner wall of the first connecting cover (1) and the extraction box (8), the bottom end of the storage box (2) is fixedly connected with a first conveying pipe (3), the end of the first conveying pipe (3) is fixedly connected with a pressurizing assembly (4), one side of the pressurizing assembly (4) is fixedly connected with a second conveying pipe (5), one end of the second conveying pipe (5) is fixedly connected with a third conveying pipe (11), the third conveying pipe (11) passes through the first connecting cover (1) to the extraction box (8), the outer wall of the third conveying pipe (11) is fixed with a second connecting cover (12), a second spiral plate (13) is fixed between the inner wall of the second connecting cover (12) and the third conveying pipe (11), one end of the hot air blower (6) is fixedly connected with a first connecting pipe (7), and the first connecting pipe (7) passes through the first connecting cover (1).

2. The multi-stage composite supercritical fluid continuous extraction device according to claim 1, characterized in that: The bottom end of the first connecting pipe (7) is fixedly connected to a mounting pipe, which is fixedly connected to the second connecting cover (12); the outer wall of the first connecting cover (1) is fixedly connected to an air outlet pipe (10), which is fixedly connected to the second connecting cover (12); one side of the second connecting cover (12) is fixedly connected to an air supply pipe (14), which is fixedly connected to the hot air blower (6).

3. The multi-stage composite supercritical fluid continuous extraction device according to claim 1, characterized in that: A first valve is installed on each of the first delivery pipe (3), the second delivery pipe (5), the first connecting pipe (7), the installation pipe, the air outlet pipe (10) and the air supply pipe (14).

4. The multi-stage composite supercritical fluid continuous extraction device according to claim 1, characterized in that: A collecting pipe (15) is fixedly connected between the top of the extraction box (8) and the top of the collecting box (18), a cooling box (16) is fixed to the outer wall of the collecting pipe (15), a third connecting cover (17) is fixed to the outer wall of the collecting box (18), and a cooling pipe (19) is installed between the outer wall of the collecting box (18) and the outer wall of the collecting pipe (15).

5. The multi-stage composite supercritical fluid continuous extraction device according to claim 1, characterized in that: A rotating shaft (21) is rotatably connected between the bottom inner wall and the top inner wall of the extraction box (8), a plurality of rotating rods (22) are fixed to the outer wall of the rotating shaft (21), and a stirring rod (23) is fixed to the bottom end of the rotating rod (22).

6. The multi-stage composite supercritical fluid continuous extraction device according to claim 1, characterized in that: The top end of the collecting box (18) is fixedly connected to a second connecting pipe (24), one end of the second connecting pipe (24) is fixedly connected to a filter box (25), one side of the filter box (25) is fixedly connected to a third connecting pipe (26), the third connecting pipe (26) is fixedly connected to the storage box (2), the bottom end of the catalyst box (27) is fixedly connected to a fixed pipe, the fixed pipe is fixedly connected to the extraction box (8), and the bottom end of the collecting box (18) is fixedly connected to a discharge pipe (20).

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