Efficient extraction and separation device for peppermint oil and extraction method

Abstract

The invention discloses an efficient peppermint oil extraction and separation device and an extraction method, and relates to the field of peppermint oil extraction.The efficient peppermint oil extraction and separation device comprises a placement frame, an extraction tank is installed on the placement frame, a pressurization valve and a pressure relief pipe are arranged on the left side and the right side of the top of a sealing cover respectively, and a piston plate and the extraction tank slide in an attached mode; a cleaning frame is fixed to the bottom of the telescopic sleeve rod. And pressure regulating pieces are arranged in the middle of the bottom surface of the sealing cover and in the pressure relief pipe, and the pressure regulating pieces can be matched with adaptive pressure relief degrees and speeds after high-pressure extraction is performed on different solutes and raw material quantities. According to the efficient extraction and separation device for peppermint oil and the extraction method, the inner wall of the extraction device can be effectively brushed through movement of a cleaning plate and a brushing plate, material residues are reduced, and adaptive pressure relief degrees and speeds can be matched for different solutes and raw material quantities after high-pressure extraction; the pressure relief opening can realize a more stable and more moderate pressure relief process, so that the adverse effect of pressure mutation on the peppermint oil is reduced, and the integrity and high efficiency of extraction are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of peppermint oil extraction, in particular to a highly efficient peppermint oil extraction and separation device. Background Art

[0002] As a natural plant essential oil with high added value, peppermint oil is widely used in medicine, food, daily chemicals, agriculture and other fields. The traditional method for extracting peppermint oil is steam distillation, but this method has the defects of high extraction temperature, long extraction time, easy destruction of effective ingredients, resulting in low extraction yield. In the past ten years, some new extraction technologies such as microwave extraction, ultrasonic extraction, supercritical CO2 extraction, etc. have emerged, but there are still many shortcomings. Ultrahigh pressure extraction technology is a new and efficient plant extraction technology, which provides a new method for the research of traditional Chinese medicine extraction technology. However, during the operation of the ultrahigh pressure extraction device, there are residual materials on the inner wall of the device, which is inconvenient to clean;

[0003] In order to solve the above defects, the prior art (publication number is CN116999900A, and the publication date is 2023-11-07 Chinese patent), a honeysuckle extract ultra-high pressure extraction device, by setting the hydraulic rod, the adjustment plate and the sealing ring structure, can be used in the process of extraction, according to the actual input amount of honeysuckle, the adjustment plate can be used to adjust the space inside the ultra-high pressure extraction tank, so as to increase the reaction speed of the supercritical fluid and honeysuckle, improve the processing efficiency, by setting the inner frame, the motor, the round rod and the scraper structure, the motor can be used to move the round rod and the scraper during the feeding process, and then the inner wall of the feeding hopper is scraped to prevent the honeysuckle from adhering to the inner wall of the feeding hopper;

[0004] In the prior art (Chinese patent with publication number CN218232256U and publication date 2023-01-06), an ultra-high pressure extraction device for extracting wild truffle polysaccharides is provided. By setting a cleaning component, a control motor drives a reciprocating screw fixed to the bottom of the output shaft to drive a reciprocating nut, and a grid plate arranged outside the reciprocating nut cooperates with a soft rubber scraper to move up and down to clean the interior contacting the outer wall of the soft rubber scraper. At the same time, the limit rods slidingly arranged on both sides of the grid plate prevent the grid plate from rotating when moving, thereby achieving the purpose of cleaning the extract accumulated on the inner wall of the high-pressure extraction tank;

[0005] The above scheme cleans the inner wall of the extraction device by setting a rotating cleaning component to reduce material residue. However, in the environment of high-pressure extraction, the residual material is closely attached to the inner wall of the device. Simple rotation cleaning cannot completely clean the residual material. It takes time to clean repeatedly. In addition, different solutes and raw material amounts require different pressure relief degrees and speeds after high-pressure extraction. Valve pressure relief is usually a relatively fixed method, which may produce a large pressure shock during pressure relief, causing loss of the mint oil that has been extracted or affecting its quality. Therefore, it is necessary to enable the pressure relief port to achieve a smoother and gentler pressure relief process to reduce the adverse effects of sudden pressure changes on the mint oil and ensure the integrity and efficiency of the extraction.

[0006] Therefore, we have proposed a highly efficient peppermint oil extraction and separation device and extraction method, in order to solve the above-mentioned problems. Summary of the invention

[0007] The object of the present invention is to provide an efficient extraction and separation device and extraction method for peppermint oil, so as to solve the problem that the existing peppermint oil extraction and separation devices on the market are not completely cleaned of residual materials on the inner wall of the device during use, and it is not convenient to release the pressure smoothly according to the amount of solute and raw material.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an efficient extraction and separation device for peppermint oil, comprising a mounting frame, an extraction tank is mounted on the mounting frame, a sealing cover is connected to the top of the extraction tank, a pressure-increasing valve and a pressure-relieving pipe are respectively arranged on the left and right sides of the top of the sealing cover, a discharge pipe is mounted on the right bottom of the extraction tank, a first electric push rod is symmetrically mounted on the bottom of the sealing cover, a piston plate is fixed to the bottom of the first electric push rod, the piston plate slides in contact with the extraction tank, a telescopic sleeve rod is connected to a bearing in the middle of the bottom surface of the piston plate, a cleaning frame is fixed to the bottom of the telescopic sleeve rod, and a brush plate is connected to the bottom edge of the cleaning frame through a movable part;

[0009] A pressure regulating component is arranged in the middle of the bottom surface of the sealing cover and inside the pressure relief pipe, and the pressure regulating component can match the pressure relief degree and speed suitable for different solutes and raw material quantities after high-pressure extraction.

[0010] Preferably, a sealing plate is symmetrically arranged in the middle of the pressure relief pipe, and the sealing plate is arranged to be a semicircular structure. When the sealing plate is closed, it forms a perfect circle, and the area of ​​the perfect circle is larger than the area of ​​the through cross-section inside the pressure relief pipe. A horizontal plate is correspondingly fixed to the outer side of the sealing plate, and the sealing plate is sealed, fitted and slid against the inner wall of the middle part of the pressure relief pipe.

[0011] Preferably, second electric push rods are symmetrically arranged in the inner walls on both sides of the middle part of the pressure relief pipe, a fixing frame is installed on the top of the second electric push rod, a guide plate is hinged on the top of the fixing frame, and the guide plate is squeezed and abutted against the cross plate.

[0012] Preferably, the pressure regulating part includes a sleeve connected to the middle part of the bottom surface of the cover by a bearing, the bottom of the sleeve is slidably connected to a sliding column, the bottom of the sliding column passes through the bearing and is connected to the top of the piston plate, the top of the sleeve is connected to the output end of the motor, and the motor is installed in the middle part of the top surface of the cover.

[0013] Preferably, oil is stored inside the sleeve, and the sleeve is connected to the inside of the fixed cylinder through a connecting pipe. The fixed cylinder is fixed to the side of the fixed frame. A connecting plate is sealingly and slidably connected in the fixed cylinder. The connecting plate is fixed to the side of the guide plate. The fixed cylinder and the connecting plate are both arranged as arc structures.

[0014] Preferably, the guide plate forms an angle adjustment structure through a fixed tube and a connecting plate, and the sealing plate forms a decompression speed adjustment structure through a transverse plate and a guide plate. The sealing plate is pushed to slide and separate to both sides by the decompression pressure, and the guide plate guides the sealing plate to adjust the opening and closing speed.

[0015] Preferably, a telescopic sleeve rod is connected to the bottom of the piston plate, and the top of the telescopic sleeve rod is integrally connected to the bottom of the sliding column. A fixing ring is sleeved on the outer side of the top of the telescopic sleeve rod, and oil chambers are symmetrically opened on both sides of the fixing ring. A piston rod is connected to the oil chamber through a spring, and the outer side of the piston rod is intermittently squeezed and conflicted with a bump, and the bump is installed at an equal angle to the bottom of the piston plate.

[0016] Preferably, the movable part includes a sleeve installed at the edges of both ends of the bottom surface of the cleaning frame, the top of the sleeve is slidably connected to a sliding rod, the interior of the oil chamber is connected to the interior of the sleeve through a connecting pipe, a slide plate is fixed to the top of the slide rod, the top of the slide plate is connected to the top of the edge of the cleaning frame through a spring, the outer bearing of the slide plate is connected to a brush plate, and the brush plate is in close contact with the inside of the extraction tank.

[0017] Preferably, a torsion spring is installed between the brush plate and the slide plate, a pull rope is connected to the rotating part of the brush plate, and the top of the pull rope is fixedly connected to the top of the edge of the cleaning frame.

[0018] Preferably, the brush plate forms an up-and-down sliding structure through a sleeve and a slide rod, and the brush plate forms a reciprocating rotating structure through a torsion spring and a pull rope.

[0019] An efficient extraction method for peppermint oil using an extraction and separation device, characterized in that it comprises the following steps:

[0020] S1. Cut the mint leaves into small pieces of 1-2 cm and grind them in a grinder;

[0021] S2, take 5g and add 50ml petroleum ether, mix according to a certain material-liquid ratio, put it in a pressure-resistant, non-toxic, flexible and pressure-transmitting soft package, seal it, and put it in a high-pressure container;

[0022] S3, start the high-pressure pump, first exhaust the air in the container, then increase the pressure to the required level, and maintain the pressure for a certain period of time, use the hydrostatic pressure of more than 100 MPa of the ultra-high pressure extraction equipment to act on the mixture of the solvent and the Chinese medicine mint, and maintain the pressure for 5 minutes;

[0023] S4. Quickly open the valve controlling the high-pressure circuit to relieve the pressure, then take out the liquid after high-pressure treatment for subsequent separation and purification.

[0024] Compared with the prior art, the invention has the following beneficial effects: the efficient extraction and separation device and extraction method for peppermint oil can effectively scrub the inner wall of the extraction device through the activities of the cleaning plate and the brush plate during use, thereby reducing material residues, and can match the pressure relief degree and speed adapted to different solutes and raw material amounts after high-pressure extraction, so that the pressure relief port can achieve a more stable and gentle pressure relief process, thereby reducing the adverse effects of sudden pressure changes on peppermint oil, and ensuring the integrity and efficiency of extraction;

[0025] Furthermore, the piston plate moves the sliding column to slide synchronously in the sleeve, and the oil in the sleeve is transported to the fixed cylinder, and the connecting plate in the fixed cylinder slides, thereby driving the guide plate to change its angle. When the second electric push rod pushes the guide plate to move the same distance each time, after the guide plate angle changes, the speed of opening and closing of the cross bar and the sealing plate also changes accordingly, so that when the pressure is released, the opening speed of the pressure relief pipe changes, adapting to different pressure relief requirements and releasing the pressure slowly and steadily;

[0026] Furthermore, during pressure relief, the pressure pushes the sealing plate to contact the guide plate through the horizontal plate. The inclination of the guide plate directly affects the pressure during pressure relief. The sealing plate gradually opens to release the pressure slowly, reducing the adverse effects of sudden pressure changes on the peppermint oil and ensuring the integrity and efficiency of the extraction.

[0027] Furthermore, when the inner wall of the extraction tank is cleaned, the telescopic sleeve drives the fixed ring to rotate, and the piston rod on the fixed ring intermittently squeezes and interlaces with the convex block, so that the piston rod slides in the oil chamber, and the oil is transported to the sleeve at the bottom. The sliding rod in the sleeve is pushed upward, thereby driving the brush plate to move up and down through the slide plate, so that the cleaning frame drives the brush plate to slide vertically synchronously during the revolution, thereby improving the cleaning force on the inner wall of the device;

[0028] Furthermore, when the slide plate slides vertically, it will pull the pull rope and reverse the torsion spring, so that the pull rope drives the brush plate to rotate. When the slide plate is reset, the pull rope is relaxed and the torsion spring drives the brush plate to rotate, so that the brush plate rotates back and forth, further improving the cleaning effect on the inner wall of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the front cross-section structure of the extraction tank of the present invention;

[0031] Figure 3 This is a schematic diagram of the bottom view of the extraction tank and the sealing cover of the present invention;

[0032] Figure 4 It is a schematic diagram of the front cross-section structure of the pressure relief pipe and sleeve of the present invention;

[0033] Figure 5 It is a schematic diagram of the front cross-section structure of the pressure relief pipe of the present invention;

[0034] Figure 6 It is a schematic diagram of the connection structure of the piston plate, the telescopic sleeve rod and the cleaning frame of the present invention;

[0035] Figure 7 It is a schematic diagram of the front cross-section structure of the bottom of the piston plate of the present invention;

[0036] Figure 8 This is a schematic diagram of the end structure of the cleaning rack of the present invention;

[0037] Fig. 9 For the present invention Figure 5 The enlarged structural diagram at A in the middle;

[0038] Fig.10 For the present invention Figure 7 The enlarged structural diagram at B in the middle;

[0039] Fig.11 It is a schematic diagram of the process flow of the present invention.

[0040] In the figure: 1. mounting frame; 2. extraction tank; 3. sealing cover; 4. pressure valve; 5. pressure relief pipe; 6. discharge pipe; 7. first electric push rod; 8. piston plate; 9. sleeve; 10. slide column; 11. sealing plate; 12. cross plate; 13. second electric push rod; 14. fixing frame; 15. guide plate; 16. fixing cylinder; 17. connecting plate; 18. telescopic sleeve rod; 19. cleaning frame; 20. fixing ring; 21. oil chamber; 22. piston rod; 23. bump; 24. sleeve; 25. slide rod; 26. slide plate; 27. brush plate; 28. torsion spring; 29. ​​pull rope; 30. motor. DETAILED DESCRIPTION

[0041] 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.

[0042] Example 1: Please refer to Figure 1 - Fig.11 The present invention provides the following technical scheme: an efficient extraction and separation device for peppermint oil, comprising a mounting frame 1, an extraction tank 2 is mounted on the mounting frame 1, a sealing cover 3 is connected to the top of the extraction tank 2, the top of the sealing cover 3 is connected to the top of the mounting frame 1 through a cylinder, a pressure valve 4 and a pressure relief pipe 5 are respectively arranged on the left and right sides of the top of the sealing cover 3, a discharge pipe 6 is installed at the right bottom of the extraction tank 2, a first electric push rod 7 is symmetrically installed at the bottom of the sealing cover 3, a piston plate 8 is fixed to the bottom of the first electric push rod 7, a telescopic sleeve rod 18 is connected to the middle bearing of the bottom surface of the piston plate 8 that fits the extraction tank 2, a cleaning frame 19 is fixed to the bottom of the telescopic sleeve rod 18, a brush plate 27 is connected to the bottom edge of the cleaning frame 19 through a movable part, a pressure regulating part is arranged in the middle of the bottom surface of the sealing cover 3 and inside the pressure relief pipe 5, and the pressure regulating part can match the pressure relief degree and speed adapted to different solutes and raw material amounts after high-pressure extraction;

[0043] An efficient extraction method for peppermint oil using an extraction and separation device, characterized in that it comprises the following steps:

[0044] S1. Cut the mint leaves into small pieces of 1-2 cm and grind them in a grinder;

[0045] S2, take 5g and add 50ml petroleum ether, mix according to a certain material-liquid ratio, put it in a pressure-resistant, non-toxic, flexible and pressure-transmitting soft package, seal it, and put it in a high-pressure container;

[0046] S3, start the high-pressure pump, first exhaust the air in the container, then increase the pressure to the required level, and maintain the pressure for a certain period of time, use the hydrostatic pressure of more than 100 MPa of the ultra-high pressure extraction equipment to act on the mixture of the solvent and the Chinese medicine mint, and maintain the pressure for 5 minutes;

[0047] S4. Quickly open the valve controlling the high-pressure circuit to relieve the pressure, then take out the liquid after high-pressure treatment for subsequent separation and purification.

[0048] When in use, the mint leaf raw material is crushed and then petroleum ether is added. After mixing according to a certain material-liquid ratio, it is packed in a pressure-resistant, non-toxic, flexible and pressure-transmitting soft package and sealed, and then placed in a high-pressure extraction tank 2; the high-pressure pump is started to connect with the pressure-increasing valve 4, and the air in the extraction tank 2 is first discharged, and the first electric push rod 7 drives the piston plate 8 to move down to the top of the liquid surface, and then the pressure is increased to the required pressure, and maintained at this pressure for a certain time; the pressure relief pipe 5 controlling the high-pressure circuit is quickly opened to relieve the pressure; the material liquid after high-pressure treatment is taken out for subsequent treatment. During the pressure-increasing and pressure-maintaining stages of ultra-high pressure extraction, the ultra-high pressure difference enables the extraction solvent to quickly penetrate into the solid drug tissue. The effective ingredients are quickly dissolved in the extraction solvent; in the pressure relief stage, the ultra-high reverse pressure difference provides ultra-high mass transfer power for the effective ingredients dissolved in the extraction solvent to diffuse from the inside of the solid tissue to the outside, and the effective ingredients can quickly diffuse to the outside of the solid tissue, significantly improving the extraction time. The pressure relief component in the pressure relief pipe 5 can adjust the appropriate pressure relief speed according to the solute and material amount, so that the pressure relief port can achieve a smoother and gentler pressure relief process, reducing the adverse effects of sudden pressure changes on peppermint oil, and when the cleaning frame 19 drives the brush plate 27 to operate, the brush plate 27 can also move up and down and rotate at the same time, thereby achieving a better cleaning effect and reducing the residue of materials on the inner wall of the extraction tank 2.

[0049] Embodiment 2:

[0050] Based on the first embodiment, an adjusting member is also disclosed. Please refer to Figure 2 , Figure 4 - Figure 5 and Fig. 9 As shown, the specific structure is as follows: the pressure regulating member includes a sleeve 9 connected to the middle part of the bottom surface of the cover 3 by a bearing, a sliding column 10 is slidably connected to the bottom of the sleeve 9, the bottom of the sliding column 10 passes through the bearing and is connected to the top of the piston plate 8, the top of the sleeve 9 is connected to the output end of the motor 30, and the motor 30 is installed in the middle part of the top surface of the cover 3, oil is stored in the sleeve 9, and the sleeve 9 is connected to the inside of the fixed cylinder 16 through a connecting pipe, the fixed cylinder 16 is fixed to the side of the fixed frame 14, and a connecting plate 17 is sealed and slidably connected in the fixed cylinder 16, and the connecting plate 17 is fixed to the side of the guide plate 15, the fixed cylinder 16 and the connecting plate 17 are both set to an arc structure, the guide plate 15 forms an angle adjustment structure through the fixed cylinder 16 and the connecting plate 17, the sealing plate 11 forms a decompression speed adjustment structure through the cross plate 12 and the guide plate 15, the sealing plate 11 is pushed to slide and separate to both sides by the pressure relief pressure, and the guide plate 15 guides the sealing plate 11 to adjust the opening and closing speed;

[0051] During use, when adjusting the pressure relief speed, after the piston plate 8 moves, the sliding column 10 will synchronously slide in the sleeve 9, and then transport the oil in the sleeve 9 to the fixed cylinder 16, and the connecting plate 17 in the fixed cylinder 16 slides, thereby driving the guide plate 15 to change its angle. When the second electric push rod 13 pushes the guide plate 15 to move the same distance each time, after the angle of the guide plate 15 changes, the opening and closing speeds of the cross plate 12 and the sealing plate 11 also change accordingly, so that when the pressure is released, the opening speed of the pressure relief pipe 5 changes to adapt to different pressure relief requirements and release the pressure slowly and steadily.

[0052] For further information, please refer to Figure 2 , Figure 4 - Figure 5 and Fig. 9 As shown, the specific structure is as follows: a sealing plate 11 is symmetrically arranged in the middle of the pressure relief pipe 5, and the sealing plate 11 is arranged in a semicircular structure. When the sealing plate 11 is closed, it forms a perfect circle, and the area of ​​the perfect circle is larger than the area of ​​the through cross section inside the pressure relief pipe 5. A horizontal plate 12 is fixed to the outer side of the sealing plate 11, and the sealing plate 11 and the inner wall of the middle of the pressure relief pipe 5 are sealed and fitted to slide. Second electric push rods 13 are symmetrically arranged in the inner walls on both sides of the middle of the pressure relief pipe 5, and a fixing frame 14 is installed on the top of the second electric push rod 13. A guide plate 15 is hinged on the top of the fixing frame 14, and the guide plate 15 is pressed and abutted against the horizontal plate 12;

[0053] During use, when the pressure is released, the pressure pushes the sealing plate 11 to contact the guide plate 15 through the cross plate 12. The inclination of the guide plate 15 directly affects the pressure during the pressure release. The sealing plate 11 gradually opens to release the pressure slowly, reducing the adverse effects of sudden pressure changes on the peppermint oil and ensuring the integrity and efficiency of the extraction.

[0054] Embodiment three:

[0055] Based on the second embodiment, a movable part is also disclosed. Please refer to Figure 2 - Figure 3 , Figure 6 - Figure 8 and Fig.10As shown, the specific structure is as follows: a telescopic sleeve rod 18 is connected to the bottom of the piston plate 8, and the top of the telescopic sleeve rod 18 is integrally connected to the bottom of the sliding column 10. A fixing ring 20 is sleeved on the outer side of the top of the telescopic sleeve rod 18. Oil chambers 21 are symmetrically opened on both sides of the fixing ring 20. A piston rod 22 is connected to the oil chamber 21 through a spring. The outer side of the piston rod 22 intermittently squeezes and conflicts with the protrusion 23. The protrusion 23 is installed at the bottom of the piston plate 8 at equal angles. The movable part includes a sleeve 24 installed at the edges of both ends of the bottom surface of the cleaning frame 19. A sliding rod 25 is slidably connected to the top of the sleeve 24. The inside of the oil chamber 21 is connected to the inside of the sleeve 24 through a connecting pipe. A slide plate 26 is fixed to the top of the slide rod 25. The top of the slide plate 26 is connected to the top of the edge of the cleaning frame 19 through a spring. The outer bearing of the slide plate 26 is connected to a brush plate 27, and the brush plate 27 is in close contact with the inside of the extraction tank 2.

[0056] During use, when the inner wall of the extraction tank 2 is cleaned, the motor 30 drives the sleeve 9 and the sliding column 10 to rotate. After the sliding column 10 rotates, it drives the telescopic sleeve 18 to rotate synchronously. After the telescopic sleeve 18 rotates, it drives the fixed ring 20 to rotate. The piston rod 22 on the fixed ring 20 will intermittently squeeze and interlace with the protrusion 23, so that the piston rod 22 slides in the oil chamber 21, and the oil is transported to the sleeve 24 at the bottom. The sliding rod 25 in the sleeve 24 is pushed upward, thereby driving the brush plate 27 to move up and down through the slide plate 26, so that the cleaning frame 19 drives the brush plate 27 to slide vertically synchronously during the revolution, thereby improving the cleaning effect on the inner wall of the device.

[0057] For further information, please refer to Figure 2 - Figure 3 , Figure 6 - Figure 8 and Fig.10 As shown, a torsion spring 28 is installed between the brush plate 27 and the slide plate 26, a pull rope 29 is connected to the rotation part of the brush plate 27, and the top of the pull rope 29 is fixedly connected to the top of the edge of the cleaning frame 19. The brush plate 27 forms an up and down sliding structure through the sleeve 24 and the slide rod 25, and the brush plate 27 forms a reciprocating rotating structure through the torsion spring 28 and the pull rope 29;

[0058] When in use, when the slide plate 26 slides vertically, it will pull the pull rope 29 and reverse the torsion spring 28, so that the pull rope 29 drives the brush plate 27 to rotate. When the slide plate 26 is reset, the pull rope 29 is relaxed, and the torsion spring 28 drives the brush plate 27 to rotate, so that the brush plate 27 rotates back and forth, further improving the cleaning effect of the inner wall of the device and improving the cleanliness of the device.

[0059] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0060] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An efficient extraction and separation device for peppermint oil, comprising a mounting frame (1), an extraction tank (2) being mounted on the mounting frame (1), a sealing cover (3) being connected to the top of the extraction tank (2), a pressure valve (4) and a pressure relief pipe (5) being respectively arranged on the left and right sides of the top of the sealing cover (3), a discharge pipe (6) being mounted on the right bottom of the extraction tank (2), a first electric push rod (7) being symmetrically mounted on the bottom of the sealing cover (3), a piston plate (8) being fixed to the bottom of the first electric push rod (7), and the piston plate (8) slidingly fitting with the extraction tank (2); Features: A telescopic sleeve rod (18) is connected to a bearing in the middle of the bottom surface of the piston plate (8), a cleaning frame (19) is fixed to the bottom of the telescopic sleeve rod (18), and a brush plate (27) is connected to the bottom edge of the cleaning frame (19) via a movable part; A pressure regulating component is provided in the middle of the bottom surface of the sealing cover (3) and inside the pressure relief pipe (5), and the pressure regulating component can match the appropriate pressure relief degree and speed for different solutes and raw material quantities after high-pressure extraction.

2. An efficient extraction and separation device for peppermint oil according to claim 1, characterized in that: A sealing plate (11) is symmetrically arranged in the middle of the pressure relief pipe (5). The sealing plate (11) is arranged in a semicircular structure. When the sealing plate (11) is closed, it forms a perfect circle, and the area of ​​the perfect circle is larger than the area of ​​the through cross section inside the pressure relief pipe (5). A horizontal plate (12) is correspondingly fixed to the outer side of the sealing plate (11). The sealing plate (11) and the inner wall of the middle of the pressure relief pipe (5) are sealed and slidable.

3. An efficient extraction and separation device for peppermint oil according to claim 1, characterized in that: A second electric push rod (13) is symmetrically arranged in the inner walls on both sides of the middle of the pressure relief pipe (5), a fixing frame (14) is installed on the top of the second electric push rod (13), a guide plate (15) is hinged on the top of the fixing frame (14), and the guide plate (15) is pressed and abutted against the horizontal plate (12).

4. The efficient extraction and separation device for peppermint oil according to claim 1, characterized in that: The pressure regulating component comprises a sleeve (9) connected to the middle of the bottom surface of the cover (3) by a bearing, the bottom of the sleeve (9) is slidably connected to a slide column (10), the bottom of the slide column (10) passes through the bearing and is connected to the top of the piston plate (8), the top of the sleeve (9) is connected to the output end of the motor (30), and the motor (30) is installed in the middle of the top surface of the cover (3).

5. An efficient extraction and separation device for peppermint oil according to claim 4, characterized in that: The sleeve (9) stores oil inside, and the sleeve (9) is connected to the inside of the fixed cylinder (16) through a connecting pipe. The fixed cylinder (16) is fixed to the side of the fixed frame (14). A connecting plate (17) is sealingly and slidably connected in the fixed cylinder (16). The connecting plate (17) is fixed to the side of the guide plate (15). The fixed cylinder (16) and the connecting plate (17) are both arranged as arc structures.

6. The efficient extraction and separation device for peppermint oil according to claim 5, characterized in that: The guide plate (15) forms an angle adjustment structure through the fixed cylinder (16) and the connecting plate (17), and the sealing plate (11) forms a pressure reduction speed adjustment structure through the transverse plate (12) and the guide plate (15); the sealing plate (11) is pushed by the pressure relief pressure to slide and separate to both sides, and the guide plate (15) guides the sealing plate (11) to adjust the opening and closing speed.

7. The efficient extraction and separation device for peppermint oil according to claim 1, characterized in that: The bottom of the piston plate (8) is connected to a telescopic sleeve rod (18), the top of the telescopic sleeve rod (18) is integrally connected to the bottom of the sliding column (10), a fixing ring (20) is sleeved on the outer side of the top of the telescopic sleeve rod (18), oil chambers (21) are symmetrically opened on both sides of the fixing ring (20), a piston rod (22) is connected to the oil chamber (21) via a spring, the outer side of the piston rod (22) is intermittently pressed against a convex block (23), and the convex block (23) is installed at an equal angle on the bottom of the piston plate (8).

8. The efficient extraction and separation device for peppermint oil according to claim 1, characterized in that: The movable part comprises a sleeve (24) installed at the edges of both ends of the bottom surface of the cleaning frame (19); a slide rod (25) is slidably connected to the top of the sleeve (24); the inside of the oil chamber (21) is connected to the inside of the sleeve (24) through a connecting pipe; a slide plate (26) is fixed to the top of the slide rod (25); the top of the slide plate (26) is connected to the top of the edge of the cleaning frame (19) through a spring; a brush plate (27) is connected to the outer bearing of the slide plate (26); and the brush plate (27) is in close contact with the inside of the extraction tank (2).

9. An efficient extraction and separation device for peppermint oil according to claim 8, characterized in that: A torsion spring (28) is installed between the brush plate (27) and the slide plate (26); a pull rope (29) is connected to the rotating part of the brush plate (27); the top of the pull rope (29) is fixedly connected to the top of the edge of the cleaning frame (19); the brush plate (27) forms an up and down sliding structure through a sleeve (24) and a slide rod (25); and the brush plate (27) forms a reciprocating rotating structure through the torsion spring (28) and the pull rope (29).

10. An efficient extraction and separation device for peppermint oil, characterized in that: An extraction method of the extraction and separation device is also disclosed, and the specific steps are as follows: S1. Cut the mint leaves into small pieces of 1-2 cm and grind them in a grinder; S2, take 5g and add 50ml petroleum ether, mix according to a certain material-liquid ratio, put it in a pressure-resistant, non-toxic, flexible and pressure-transmitting soft package, seal it, and put it in a high-pressure container; S3, start the high-pressure pump, first exhaust the air in the container, then increase the pressure to the required level, and maintain the pressure for a certain period of time, use the hydrostatic pressure of more than 100 MPa of the ultra-high pressure extraction equipment to act on the mixture of the solvent and the Chinese medicine mint, and maintain the pressure for 5 minutes; S4. Quickly open the valve controlling the high-pressure circuit to relieve the pressure, then take out the liquid after high-pressure treatment for subsequent separation and purification.

Images