Separation device and method for extracting vanillic acid from black sesame seed peels

Abstract

The invention discloses a separation device and method for extracting vanillic acid from black sesame seed peels, and belongs to the field of vanillic acid extraction. The device comprises an oil bath pan, an acidolysis barrel is arranged in the oil bath pan, the bottom wall of the acidolysis barrel is communicated with a plurality of barrel bodies, and black sesame seed peels and hydrochloric acid are put into the acidolysis barrel and are dispersed in the barrel bodies, so that the heating area of a mixture of the black sesame seed peels and the hydrochloric acid by the oil bath pan is enlarged; the acidolysis barrel can move upwards relative to the oil bath pan, and the acidolysis barrel can be overturned by 180 degrees when moving upwards to the oil bath pan; a mounting ring is vertically and slidably arranged at the upper part of the oil bath pan; according to the device, a plurality of barrel bodies are arranged in the acidolysis barrel and are used for dispersing a mixture of black sesame seed peels and hydrochloric acid, so that the heating area is increased, the acidolysis barrel axially rotates relative to the barrel bodies after being overturned, centrifugal force is applied to the mixture in the acidolysis barrel, solid-liquid separation is realized, the acidolysis efficiency is improved, the operation steps are simplified, and the loss risk of active ingredients is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of vanillic acid extraction, in particular to a separation device and a method for extracting vanillic acid from black sesame seed husks. Background Art

[0002] In the field of natural product extraction, vanillic acid, as an important active ingredient, is widely present in a variety of plant tissues, including black sesame seed skin. Vanillic acid has a variety of biological activities, such as antioxidant and anti-inflammatory, so it has broad application prospects in the fields of food, medicine and cosmetics. However, it is not easy to efficiently extract vanillic acid from black sesame seed skin, mainly because the black sesame seed skin has a compact structure and contains more difficult-to-digest components, such as cellulose.

[0003] Traditional extraction methods often use acid hydrolysis, that is, using acid (such as hydrochloric acid) to acid hydrolyze the black sesame seed skin to destroy its cell structure and release active ingredients such as vanillic acid. However, traditional acid hydrolysis devices have many shortcomings. For example, the acid hydrolysis cylinder is usually placed directly on the heating source, resulting in limited heating area and low acid hydrolysis efficiency; at the same time, after the acid hydrolysis is completed, the mixture often needs to undergo complex solid-liquid separation operations, which not only increases the operation steps, but may also lead to the loss of active ingredients. Summary of the invention

[0004] The purpose of the present invention is to provide a separation device and method for extracting vanillic acid from black sesame seed skin, which solves the problems of uneven heating during acid hydrolysis in the existing device and complex extraction operation after acid hydrolysis in the existing separation method.

[0005] To achieve the above object, the present invention provides the following technical solution: a separation device for extracting vanillic acid from black sesame seed skins, comprising an oil bath pot, an acid hydrolysis cylinder is arranged in the oil bath pot, a bottom wall of the acid hydrolysis cylinder is connected to a plurality of cylinders, black sesame seed skins and hydrochloric acid are put into the acid hydrolysis cylinder and dispersed in the plurality of cylinders, so that the mixture of black sesame seed skins and hydrochloric acid is heated by the oil bath pot.

[0006] The acid hydrolysis cylinder can be moved upward relative to the oil bath pot, and the acid hydrolysis cylinder can be turned 180 degrees when moved upward to the oil bath pot;

[0007] A mounting ring is vertically slidably provided on the upper part of the oil bath pot, and the acidolysis cylinder is rotatably connected to the mounting ring. The acidolysis cylinder is turned over 180 degrees and then rotated relative to the acidolysis cylinder, thereby applying centrifugal force to the mixture.

[0008] Preferably, two groups of cylinders are symmetrically connected to both sides of the acidolysis cylinder, the output ends of the cylinders are connected to mounting blocks, and two rotating shafts are symmetrically connected to the mounting ring, and the two rotating shafts are rotatably connected to the two mounting blocks respectively.

[0009] Preferably, a gear is connected to the end of the rotating shaft, two brackets are symmetrically connected to the two sides of the oil bath, racks are connected to the two brackets, and the two racks are respectively meshed with the two gears.

[0010] Preferably, the end face of the gear is connected to a positioning plate, and notches are provided on both sides of the positioning plate. Wedge blocks are respectively connected to both ends of the rack. When the gear moves and engages with the rack, the notch moves away from the wedge block so that the gear can rotate, and when the gear moves to either end of the rack and disengages from the rack, the notch fits against the wedge block, so that the gear cannot rotate.

[0011] Preferably, a plurality of electric wheels are rotated in a circular array on the inner wall of the mounting ring, a positioning ring is connected to the outer wall of the acidolysis cylinder, and the positioning ring is clamped to the plurality of electric wheels.

[0012] Preferably, the acid hydrolysis cylinder is connected with a cylinder cover, the inner wall of the cylinder cover is connected with a conical filter screen, the middle part of the bottom wall of the acid hydrolysis cylinder is penetrated with a discharge pipe, and one end of the discharge pipe is inserted into the conical filter screen;

[0013] A positioning column is connected to the middle of the oil bath pot, and a limiting rod is connected to the middle of the positioning column. After the acid hydrolysis cylinder moves downward, the limiting rod is plugged into the other end of the discharge pipe.

[0014] Preferably, it also includes a suction filter box, which is connected to the outer wall of the oil bath pot, and is connected to a negative pressure pipe and a liquid extraction pipe, a one-way valve is provided on the liquid extraction pipe, the negative pressure pipe is connected to an external vacuum pump, and the liquid extraction pipe is connected to the discharge pipe.

[0015] Preferably, a counterweight is connected to the middle portion of the liquid extraction tube.

[0016] Preferably, a filter box is rotatably connected to the outer wall of the oil bath pot, a drain pipe is connected between the filter box and the suction filter box, a valve is provided on the drain pipe, a fixing frame for installing filter paper is plugged into the middle of the filter box, when the valve is opened and the external vacuum pump is reversed and positive pressure is applied to the suction filter box, the liquid in the suction filter box enters the filter box and is filtered by the filter paper on the fixing frame;

[0017] When the fixing frame is pulled out and the filter box is rotated, the liquid in the filter box flows to the box wall in the filter box located on one side of the drain pipe.

[0018] Preferably, the bracket is connected to a piston cylinder, an extraction tube and a liquid outlet tube are connected to the piston cylinder, both the extraction tube and the liquid outlet tube are provided with a one-way valve, a piston rod is slidably connected in the piston cylinder, a neutralizing agent is filled between the piston rod and the piston cylinder, the extraction tube is connected to the neutralizing agent supply point, the liquid outlet tube is connected to the filter box, and the mounting block can push the piston rod to slide into the piston cylinder when it moves upward.

[0019] A separation method for extracting vanillic acid from black sesame seed husks comprises the following steps:

[0020] S1. Pour the black sesame seed husks into the acid hydrolysis cylinder, then slowly pour the hydrochloric acid solution to ensure that the mixture is evenly distributed in the acid hydrolysis cylinder and multiple cylinders at the bottom thereof, start the heating system of the oil bath pot, heat the mixture evenly in the oil bath, rotate the acid hydrolysis cylinder at a low speed through the electric runner to promote stirring of the hot oil in the cylinder and improve the uniformity of heating;

[0021] S2. After the acid hydrolysis reaction is completed, the cylinder is controlled to extend, driving the mounting ring and the acid hydrolysis cylinder to move upward and flip 180 degrees. After flipping, the electric wheel is started to rotate the acid hydrolysis cylinder at high speed to apply centrifugal force to the mixture to achieve solid-liquid separation. The solid residue is isolated by the conical filter screen, and the liquid flows out through the discharge pipe;

[0022] S3, start the external vacuum pump, and filter the liquid in the acid hydrolysis cylinder through the filter box. The liquid is extracted into the filter box, and the solid is isolated by the conical filter screen;

[0023] S4. Before or during filtration, the neutralizing agent is pushed into the filtration box through the piston cylinder and the piston rod, and mixed with the liquid to adjust the pH value;

[0024] S5. Open the valve of the drain pipe, introduce the liquid in the suction filtration box into the filter box for further filtration and purification, replace the filter paper and repeat the filtration steps until the vanillic acid extract of the desired purity is obtained;

[0025] S6. Open the valve on the discharge tube to collect the purified vanillic acid extract.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. The present invention pours black sesame seed husks into an acidolysis cylinder, and then pours hydrochloric acid into the acidolysis cylinder. The mixture of hydrochloric acid and black sesame seed husks flows by gravity into a plurality of cylinders at the bottom of the acidolysis cylinder, and the plurality of cylinders are immersed in an oil bath pot, so that the mixture can be heated by a large area of ​​the oil bath, and the hydrochloric acid can accelerate the acidolysis reaction. During the heating process, the hydrochloric acid will chemically react with the components in the black sesame husks, so that the indigestible components such as cellulose in the hard shell are converted into soluble salts or other compounds. After such treatment, the active components in the black sesame seed husks can be more easily extracted, and then the control mounting ring drives the acidolysis cylinder to move up and flip over. At this time, the mixture in the acidolysis cylinder flows out of the cylinder by gravity, and then the acidolysis cylinder rotates relative to the axial direction of the cylinder to apply centrifugal force to the mixture inside, so as to separate the solid and the liquid. Through the above arrangement, the black sesame seed husks can be heated more evenly and over a large area during acidolysis. In addition, by flipping the acidolysis cylinder and rotating the centrifuge, the mixture can be separated into solid and liquid without taking out the acidolysis cylinder, thereby eliminating the operation steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0029] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0030] Figure 3 It is a structural schematic diagram of the acid hydrolysis cylinder of the present invention;

[0031] Figure 4 is a cross-sectional view of the present invention;

[0032] Figure 5 It is a structural schematic diagram of the rack of the present invention;

[0033] Figure 6 It is a structural schematic diagram of the counterweight block of the present invention;

[0034] Figure 7 It is a structural schematic diagram of the piston cylinder of the present invention.

[0035] In the figure: 1. oil bath pot; 101. positioning column; 11. cylinder; 12. mounting block; 13. limit rod; 14. gear; 15. positioning plate; 16. rack; 17. wedge block; 2. acid hydrolysis cylinder; 21. discharge pipe; 22. cylinder body; 23. cylinder cover; 24. conical filter; 25. positioning ring; 26. mounting ring; 27. electric wheel; 28. rotating shaft; 3. filter box; 31. negative pressure pipe; 32. liquid extraction pipe; 33. counterweight block; 34. filter box; 35. discharge pipe; 36. fixing frame; 37. discharge pipe; 4. bracket; 41. piston cylinder; 42. extraction pipe; 43. liquid outlet pipe; 44. piston rod. DETAILED DESCRIPTION

[0036] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0037] Reference Figure 1-Figure 7 The present embodiment provides a technical solution: a separation device for extracting vanillic acid from black sesame seed skins, comprising an oil bath pot 1, an acid hydrolysis cylinder 2 is arranged in the oil bath pot 1, the bottom wall of the acid hydrolysis cylinder 2 is connected with a plurality of cylinders 22, black sesame seed skins and hydrochloric acid are put into the acid hydrolysis cylinder 2 and dispersed in the plurality of cylinders 22, so that the heating area of ​​the mixture of black sesame seed skins and hydrochloric acid by the oil bath pot 1 is expanded; the acid hydrolysis cylinder 2 can be moved upward relative to the oil bath pot 1, and the acid hydrolysis cylinder 2 can be turned 180 degrees when it is moved upward to the oil bath pot 1; a mounting ring 26 is vertically slidably arranged on the upper part of the oil bath pot 1, the acid hydrolysis cylinder 2 is rotatably connected to the mounting ring 26, and the acid hydrolysis cylinder 2 rotates relative to the acid hydrolysis cylinder 2 after turning 180 degrees, so as to apply centrifugal force to the mixture.

[0038] When in use, pour the black sesame seed husks into the acid hydrolysis cylinder 2, and then pour hydrochloric acid into the acid hydrolysis cylinder 2. The mixture of hydrochloric acid and black sesame seed husks flows to the multiple cylinders 22 at the bottom of the acid hydrolysis cylinder 2 by gravity, and the multiple cylinders 22 are all immersed in the oil bath pot 1, so that the mixture can be heated by a large area of ​​oil bath. The hydrochloric acid can accelerate the acid hydrolysis reaction. During the heating process, the hydrochloric acid will chemically react with the components in the black sesame husks, so that the cellulose and other difficult-to-digest components in the hard shell are converted into soluble salts or other compounds. After such treatment, In order to make it easier to extract the active ingredients in the black sesame seed skin, the mounting ring 26 is then controlled to drive the acid hydrolysis cylinder 2 to move upward and flip over. At this time, the mixed flow in the acid hydrolysis cylinder 2 flows out of the cylinder body 22 by gravity, and then the acid hydrolysis cylinder 2 is axially rotated relative to the cylinder body 22 to apply centrifugal force to the mixture inside it, thereby achieving solid-liquid separation. Through the above-mentioned arrangement, the black sesame seed skin can be heated more evenly and over a large area during acid hydrolysis. In addition, by flipping the acid hydrolysis cylinder 2 and rotating the centrifuge, the mixture can be separated from the solid and liquid without taking out the acid hydrolysis cylinder 2, thereby eliminating the operation steps.

[0039] Two groups of cylinders 11 are symmetrically connected to both sides of the acid hydrolysis cylinder 2. The output ends of the cylinders 11 are connected to mounting blocks 12. Two rotating shafts 28 are symmetrically connected to the mounting ring 26. The two rotating shafts 28 are rotatably connected to the two mounting blocks 12 respectively.

[0040] When the cylinder 11 is extended or retracted, it can drive the mounting block 12 to move up and down. The movement of the mounting block 12 can drive the mounting ring 26 to move up and down through the rotating shaft 28, so that the acid hydrolysis cylinder 2 can be moved up and down to perform oil immersion heating or leave the oil immersion heating state.

[0041] The end of the rotating shaft 28 is connected to a gear 14 , and two brackets 4 are symmetrically connected to both sides of the oil bath 1 . Racks 16 are connected to the two brackets 4 , and the two racks 16 are respectively meshed with the two gears 14 .

[0042] When the cylinder 11 extends and drives the shaft 28 to move up and down, the gear 14 at the end of the shaft 28 can engage with the rack 16. At this time, as the cylinder 11 continues to extend and retract, the gear 14 can roll on the rack 16, so that the mounting ring 26 drives the acid hydrolysis cylinder 2 to flip.

[0043] The end face of the gear 14 is connected to a positioning plate 15, and notches are provided on both sides of the positioning plate 15. Wedge blocks 17 are respectively connected to the two ends of the rack 16. When the gear 14 moves and engages with the rack 16, the notches are away from the wedge blocks 17 so that the gear 14 can rotate. When the gear 14 moves to either end of the rack 16 and disengages from the rack 16, the notches are attached to the wedge blocks 17, so that the gear 14 cannot rotate.

[0044] In order to compensate for the insufficient opening diameter of the oil bath pot 1, when the rotating shaft 28 moves downward to make the gear 14 disengage from the meshing state with the rack 16, the notch on the positioning plate 15 is just opposite to the straight surface of the wedge block 17. At this time, the gear 14 cannot rotate, and the acidolysis cylinder 2 is in a vertical state. Subsequently, the cylinder 11 continues to shorten, which enables the acidolysis cylinder 2 to continue to move downward in a vertical state and enter the oil bath pot 1. When the rotating shaft 28 moves upward to make the gear 14 disengage from the meshing state with the rack 16, the notch on the other side of the positioning plate 15 can face the straight surface of the upper wedge block 17, so that the subsequent acidolysis cylinder 2 moves upward in a vertical state and is locked, so that the stability of the acidolysis cylinder 2 during rotation is guaranteed.

[0045] A plurality of electric wheels 27 are rotatably arranged in a circular array on the inner wall of the mounting ring 26 . A positioning ring 25 is connected to the outer wall of the acid hydrolysis cylinder 2 . The positioning ring 25 is clamped to the plurality of electric wheels 27 .

[0046] The electric wheel 27 can be driven to rotate by a built-in motor. The electric wheel 27 is engaged with and tightly contacts the positioning ring 25 on the outer wall of the acidolysis cylinder 2, so that when multiple electric wheels 27 rotate rapidly in the same direction, the acidolysis cylinder 2 can be driven to rotate so that the mixture inside it is subjected to centrifugal force. In addition, when oil bath heating is performed, the electric wheel 27 rotates at a low speed and drives the acidolysis cylinder 2 to rotate, so that the cylinder 22 can stir the hot oil in the oil bath pot 1, so that the heating uniformity of the cylinder 22 is further improved.

[0047] A cylinder cover 23 is connected to the acidolysis cylinder 2, and a conical filter screen 24 is connected to the inner wall of the cylinder cover 23. A discharge pipe 21 is connected through the middle of the bottom wall of the acidolysis cylinder 2, and one end of the discharge pipe 21 is inserted into the conical filter screen 24; a positioning column 101 is connected to the middle of the oil bath pot 1, and a limiting rod 13 is connected to the middle of the positioning column 101. After the acidolysis cylinder 2 moves downward, the limiting rod 13 is inserted into the other end of the discharge pipe 21.

[0048] The setting of the cylinder cover 23 prevents the mixture inside the acidolysis cylinder 2 from leaking out after the acidolysis cylinder 2 is turned over. The top of the discharge pipe 21 extends to a position close to the cylinder cover 23, so that the liquid in the acidolysis cylinder 2 is not easy to leak. The setting of the conical filter screen 24 ensures that the solids in the mixture are isolated, so that the liquid is discharged through the discharge pipe 21, and the large particles of solid are isolated. In addition, the top of the positioning column 101 exceeds the liquid level of the oil bath pot 1. After the acidolysis cylinder 2 moves down, the limiting rod 13 on the top of the positioning column 101 can be inserted into the discharge pipe 21, so that the acidolysis cylinder 2 is positioned, while preventing the hot oil in the oil bath pot 1 from flowing back into the discharge pipe 21.

[0049] It also includes a suction box 3, which is connected to the outer wall of the oil bath pot 1. The suction box 3 is connected to a negative pressure pipe 31 and a liquid extraction pipe 32. A one-way valve is provided on the liquid extraction pipe 32. The negative pressure pipe 31 is connected to an external vacuum pump, and the liquid extraction pipe 32 is connected to the discharge pipe 21.

[0050] After the acidolysis cylinder 2 is flipped over to centrifuge the mixture, the external vacuum pump is started to generate negative pressure in the suction box 3, so that the negative pressure acts on the acidolysis cylinder 2 through the liquid extraction pipe 32, so that the liquid in the mixture in the acidolysis cylinder 2 is extracted, and the solid is isolated by the conical filter 24. The one-way valve prevents the liquid in the suction box 3 from flowing back into the acidolysis cylinder 2.

[0051] A counterweight 33 is connected to the middle of the liquid extraction tube 32 .

[0052] The counterweight block 33 is provided so that the liquid extraction tube 32 is pulled and reset when the acid hydrolysis cylinder 2 moves downward, thereby preventing the liquid extraction tube 32 from accumulating in the oil bath pot 1 and hindering the reset of the acid hydrolysis cylinder 2 .

[0053] A filter box 34 is rotatably connected to the outer wall of the oil bath pot 1, and a drain pipe 35 is connected between the filter box 34 and the suction filter box 3. A valve is provided on the drain pipe 35, and a fixing frame 36 for installing filter paper is inserted in the middle of the filter box 34. When the valve is opened and the external vacuum pump is reversed and a positive pressure is applied to the suction filter box 3, the liquid in the suction filter box 3 enters the filter box 34 and is filtered by the filter paper on the fixing frame 36; when the fixing frame 36 is pulled out and the filter box 34 is rotated, the liquid in the filter box 34 flows to the box wall of the filter box 34 located on one side of the drain pipe 35.

[0054] After the liquid in the mixture in the acid hydrolysis cylinder 2 is extracted into the filtration box 3, the vacuum pump is controlled to reverse so that the vacuum pump applies positive pressure to the filtration box 3, and the valve of the drain pipe 35 is opened at the same time, so that the positive pressure causes the liquid in the filtration box 3 to enter the filter box 34. As the positive pressure is transmitted, the liquid is further filtered through the filter paper on the fixed frame 36 for purification. After the liquid completely passes through the filter paper on the fixed frame 36, the fixed frame 36 is pulled out, and then the filter paper is replaced. The filter box 34 is manually turned over so that the liquid inside it flows to the box wall of the filter box 34 on one side of the drain pipe 35, and then the fixed frame 36 is inserted into the filter box 34. The above steps are repeated to filter the liquid again to improve the purification degree of the extract. The purified extract can be discharged by opening the valve on the discharge pipe 37.

[0055] The bracket 4 is connected to a piston cylinder 41, and an extraction pipe 42 and a liquid outlet pipe 43 are connected to the piston cylinder 41. Both the extraction pipe 42 and the liquid outlet pipe 43 are provided with a one-way valve. A piston rod 44 is slidably connected in the piston cylinder 41, and a neutralizing agent is filled between the piston rod 44 and the piston cylinder 41. The extraction pipe 42 is connected to the neutralizing agent supply point, and the liquid outlet pipe 43 is connected to the filter box 3. When the mounting block 12 moves upward, it can push the piston rod 44 to slide into the piston cylinder 41.

[0056] Before the valve on the discharge pipe 35 is opened, during the extension of the cylinder 11, the mounting block 12 moves upward to push the piston rod 44, so that the piston rod 44 pushes the neutralizing agent in the piston cylinder 41 into the suction box 3 through the liquid outlet pipe 43, and then the vacuum pump is started, so that the liquid in the acid hydrolysis cylinder 2 is extracted into the suction box 3. In the process of the liquid entering the suction box 3, the liquid impacts the neutralizing agent, so that the neutralizing agent and the liquid are evenly mixed;

[0057] The piston rod 44 can be manually pulled downward relative to the piston cylinder 41, thereby controlling the amount of the neutralizing agent extracted through the extraction tube 42.

[0058] A separation method for extracting vanillic acid from black sesame seed husks comprises the following steps:

[0059] S1, pour the black sesame seed husk into the acid hydrolysis cylinder 2, then slowly pour the hydrochloric acid solution, ensure that the mixture is evenly distributed in the acid hydrolysis cylinder 2 and the multiple cylinders 22 at the bottom thereof, start the heating system of the oil bath pot 1, make the mixture evenly heated in the oil bath, rotate the acid hydrolysis cylinder 2 at a low speed by the electric runner 27, promote the stirring of the hot oil in the cylinder 22, and improve the uniformity of heating;

[0060] S2. After the acidolysis reaction is completed, the control cylinder 11 is extended to drive the mounting ring 26 and the acidolysis cylinder 2 to move up and flip 180 degrees. After flipping, the electric runner 27 is started to rotate the acidolysis cylinder 2 at high speed to apply centrifugal force to the mixture to achieve solid-liquid separation. The solid residue is isolated by the conical filter 24, and the liquid flows out through the discharge pipe 21;

[0061] S3, start the external vacuum pump, and filter the liquid in the acid hydrolysis cylinder 2 through the filter box 3, the liquid is extracted into the filter box 3, and the solid is isolated by the conical filter screen 24;

[0062] S4, before or during the filtration, the neutralizing agent is pushed into the filtration box 3 through the piston cylinder 41 and the piston rod 44, and mixed with the liquid to adjust the pH value;

[0063] S5, open the valve of the drain pipe 35, introduce the liquid in the suction filtration box 3 into the filter box 34 for further filtration and purification, replace the filter paper and repeat the filtration steps until the vanillic acid extract of the desired purity is obtained;

[0064] S6. Open the valve on the discharge pipe 37 to collect the purified vanillic acid extract.

[0065] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A separation device for extracting vanillic acid from black sesame seed husks, comprising an oil bath pot (1), characterized in that: An acid hydrolysis cylinder (2) is arranged in the oil bath pot (1), and the bottom wall of the acid hydrolysis cylinder (2) is connected to a plurality of cylinders (22). Black sesame seed husks and hydrochloric acid are put into the acid hydrolysis cylinder (2) and dispersed in the plurality of cylinders (22), so that the mixture of black sesame seed husks and hydrochloric acid is heated by the oil bath pot (1) and the heating area is expanded; The acid hydrolysis cylinder (2) can be moved upward relative to the oil bath pot (1), and the acid hydrolysis cylinder (2) can be turned 180 degrees when it is moved upward to the oil bath pot (1); A mounting ring (26) is vertically slidably disposed on the upper portion of the oil bath pot (1), and the acid hydrolysis cylinder (2) is rotatably connected to the mounting ring (26). The acid hydrolysis cylinder (2) is turned over 180 degrees and then rotated relative to the acid hydrolysis cylinder (2), thereby applying centrifugal force to the mixture.

2. The separation device for extracting vanillic acid from black sesame seed husk according to claim 1, characterized in that: Two groups of cylinders (11) are symmetrically connected to the two sides of the acid hydrolysis cylinder (2); the output ends of the cylinders (11) are connected to mounting blocks (12); two rotating shafts (28) are symmetrically connected to the mounting ring (26); the two rotating shafts (28) are rotatably connected to the two mounting blocks (12) respectively.

3. The separation device for extracting vanillic acid from black sesame seed husk according to claim 2, characterized in that: The end of the rotating shaft (28) is connected to a gear (14), and two brackets (4) are symmetrically connected to the two sides of the oil bath pot (1), and the two brackets (4) are connected to a rack (16), and the two racks (16) are respectively meshed with the two gears (14).

4. The separation device for extracting vanillic acid from black sesame seed husks according to claim 3, characterized in that: The end surface of the gear (14) is connected to a positioning plate (15), and notches are provided on both sides of the positioning plate (15). The two ends of the rack (16) are respectively connected to wedge blocks (17). When the gear (14) moves and meshes with the rack (16), the notch moves away from the wedge block (17) so that the gear (14) can rotate. When the gear (14) moves to either end of the rack (16) and disengages from the rack (16), the notch fits against the wedge block (17), so that the gear (14) cannot rotate.

5. The separation device for extracting vanillic acid from black sesame seed husk according to claim 4, characterized in that: A plurality of electric wheels (27) are rotatably arranged in a circular array on the inner wall of the mounting ring (26); a positioning ring (25) is connected to the outer wall of the acid hydrolysis cylinder (2); and the positioning ring (25) is clamped to the plurality of electric wheels (27).

6. The separation device for extracting vanillic acid from black sesame seed husk according to claim 5, characterized in that: The acid hydrolysis cylinder (2) is connected to a cylinder cover (23), the inner wall of the cylinder cover (23) is connected to a conical filter screen (24), and a discharge pipe (21) is connected through the middle of the bottom wall of the acid hydrolysis cylinder (2), and one end of the discharge pipe (21) is inserted into the conical filter screen (24); The middle of the oil bath pot (1) is connected to a positioning column (101), the middle of the positioning column (101) is connected to a limiting rod (13), and after the acid hydrolysis cylinder (2) moves downward, the limiting rod (13) is plugged into the other end of the discharge pipe (21).

7. The separation device for extracting vanillic acid from black sesame seed husk according to claim 6, characterized in that: The invention also comprises a suction filter box (3), wherein the suction filter box (3) is connected to the outer wall of the oil bath pot (1), the suction filter box (3) is connected to a negative pressure pipe (31) and a liquid extraction pipe (32), a one-way valve is provided on the liquid extraction pipe (32), the negative pressure pipe (31) is connected to an external vacuum pump, and the liquid extraction pipe (32) is connected to the discharge pipe (21).

8. The separation device for extracting vanillic acid from black sesame seed husks according to claim 7, characterized in that: A counterweight block (33) is connected to the middle of the liquid extraction tube (32).

9. The separation device for extracting vanillic acid from black sesame seed husks according to claim 8, characterized in that: A filter box (34) is rotatably connected to the outer wall of the oil bath pot (1); a drain pipe (35) is connected between the filter box (34) and the suction filter box (3); a valve is provided on the drain pipe (35); a fixing frame (36) for installing filter paper is inserted in the middle of the filter box (34); when the valve is opened and the external vacuum pump is reversed and a positive pressure is applied to the suction filter box (3), the liquid in the suction filter box (3) enters the filter box (34) and is filtered by the filter paper on the fixing frame (36); When the fixing frame (36) is pulled out and the filter box (34) is rotated, the liquid in the filter box (34) flows to the box wall of the filter box (34) located on one side of the drain pipe (35); The bracket (4) is connected to a piston cylinder (41), and an extraction pipe (42) and a liquid outlet pipe (43) are connected to the piston cylinder (41). Both the extraction pipe (42) and the liquid outlet pipe (43) are provided with a one-way valve. A piston rod (44) is slidably connected inside the piston cylinder (41), and a neutralizing agent is filled between the piston rod (44) and the piston cylinder (41). The extraction pipe (42) is connected to a neutralizing agent supply point, and the liquid outlet pipe (43) is connected to the filter box (3). When the mounting block (12) moves upward, it can push the piston rod (44) to slide into the piston cylinder (41).

10. A separation method based on the separation device for extracting vanillic acid from black sesame seed husks according to claim 9, characterized in that: The following steps are involved: S1, pouring black sesame seed husks into an acid hydrolysis cylinder (2), and then slowly pouring in a hydrochloric acid solution to ensure that the mixture is evenly distributed in the acid hydrolysis cylinder (2) and the multiple cylinders (22) at the bottom thereof, starting the heating system of the oil bath pot (1) to allow the mixture to be evenly heated in the oil bath, and rotating the acid hydrolysis cylinder (2) at a low speed through an electric wheel (27) to promote stirring of the hot oil in the cylinder (22) and improve the uniformity of heating; S2. After the acid hydrolysis reaction is completed, the control cylinder (11) is extended to drive the mounting ring (26) and the acid hydrolysis cylinder (2) to move upward and flip 180 degrees. After flipping, the electric wheel (27) is started to rotate the acid hydrolysis cylinder (2) at high speed to apply centrifugal force to the mixture to achieve solid-liquid separation. The solid residue is isolated by the conical filter (24), and the liquid flows out through the discharge pipe (21); S3, starting the external vacuum pump to filter the liquid in the acid hydrolysis cylinder (2) through the filter box (3), the liquid is extracted into the filter box (3), and the solid is isolated by the conical filter screen (24); S4. Before or during the filtration, the neutralizing agent is pushed into the filtration box (3) through the piston cylinder (41) and the piston rod (44) to mix with the liquid to adjust the pH value; S5, opening the valve of the liquid discharge pipe (35), introducing the liquid in the suction filter box (3) into the filter box (34) for further filtration and purification, replacing the filter paper and repeating the filtration steps until the vanillic acid extract of the desired purity is obtained; S6. Open the valve on the discharge pipe (37) to collect the purified vanillic acid extract.

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