Gradient extraction and low-temperature membrane concentration combined device for Korean pine nut traditional Chinese medicine tea

Abstract

The invention discloses a gradient extraction and low-temperature membrane concentration combined device for Korean pine nut traditional Chinese medicine tea. The gradient extraction and low-temperature membrane concentration combined device comprises a first extraction tank, a second extraction tank, an extraction inner tank, a concentration inner tank, a fiber ultrafiltration membrane and a mounting cover, a first extraction tank, a second extraction tank and a third extraction tank are arranged on the first support frame, the second extraction tank is arranged on one side of the first extraction tank, and the third extraction tank is arranged on one side of the second extraction tank; according to the device, a structural design is adopted, and the device can set extraction parameters in stages according to the dissolution characteristics of different active components through modular layout and serial and parallel flexible switching design of the three independent extraction tanks, so that a full-process extraction system of low-temperature softening, gradient dissolution and deep enrichment is formed; the comprehensive extraction efficiency of various active components is effectively improved, and meanwhile, a triple temperature control and heat preservation structure of the sleeve heating wire, the ceramic fiber filling layer and the heat preservation jacket is adopted, so that uniform heat conduction and accurate and constant temperature are realized.

Description

Technical Field

[0001] This invention relates to the field of traditional Chinese medicine extraction technology, and in particular to a combined device for gradient extraction and low-temperature membrane concentration of red pine nut tea. Background Technology

[0002] As a carrier combining traditional medicine and daily health care, the extraction efficiency and retention rate of the effective components in traditional Chinese medicine tea directly determine the product quality. Red pine nuts, as a high-quality raw material for traditional Chinese medicine tea, are rich in various active ingredients such as pine nut polysaccharides, flavonoids, and unsaturated fatty acids. These components exhibit significantly different dissolution characteristics. Water-soluble polysaccharides readily dissolve at low temperatures, flavonoids require a moderate concentration solvent gradient for extraction, and fat-soluble components require specific temperatures and auxiliary agents for efficient extraction. However, existing traditional Chinese medicine extraction equipment has many limitations in the production of red pine nut traditional Chinese medicine tea. Firstly, most existing equipment uses a single-tank, single-extraction mode, lacking a targeted gradient extraction structure design, which cannot match the stepwise dissolution of multiple components in red pine nuts. The traditional heating elements are often poorly designed, leading to insufficient extraction and imbalance of active ingredients. Furthermore, their crude layout results in uneven heat conduction, easily causing localized overheating, oxidative rancidity of oils, and degradation of heat-sensitive components, severely impacting product quality and resource utilization. Secondly, existing technologies often involve independent extraction, concentration, and purification functions, requiring additional separation equipment, resulting in cumbersome processes and high energy consumption. The concentration stage frequently employs high-temperature evaporation, which contradicts the heat-sensitive properties of red pine kernel active ingredients, leading to pyrolysis and loss of components. Additionally, the fixed connection structure of traditional devices, the inconvenience of disassembling and assembling core components such as membrane modules, high maintenance costs, and difficulty in adapting to different production scales and process adjustment needs, all restrict the efficiency and flexibility of continuous industrial production. Summary of the Invention

[0003] The purpose of this invention is to provide a combined device for gradient extraction and low-temperature membrane concentration of red pine nut herbal tea, so as to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a gradient extraction and low-temperature membrane concentration combined device for red pine nut herbal tea, comprising a first support frame, on which a first extraction tank, a second extraction tank and a third extraction tank are disposed, wherein the second extraction tank is disposed on one side of the first extraction tank and the third extraction tank is disposed on one side of the second extraction tank, and a second support frame is fixedly connected to the outer wall of one end of the first support frame, and a concentration main tank is disposed on the second support frame.

[0005] As a further technical solution of the present invention, the first extraction tank, the second extraction tank and the third extraction tank are each provided with an outer extraction tank, and an inner extraction tank is fitted inside the outer extraction tank.

[0006] As a further technical solution of the present invention, a sleeve heating wire is provided between the outer extraction tank and the inner extraction tank, and a ceramic fiber filling layer is provided between the outer extraction tank and the inner extraction tank.

[0007] As a further technical solution of the present invention, the outer surface of the extraction outer can is fitted with an insulating outer jacket, and the top of the extraction inner can is fixedly connected with a first fixing plate.

[0008] As a further technical solution of the present invention, the first fixed plate is provided with a top cover, and a first mounting plate is fixedly connected to the bottom outer surface of the top cover at a position corresponding to the first fixed plate. Fixed rings are evenly arranged on the first fixed plate along the circumferential direction, and a feed port is opened on the top cover.

[0009] As a further technical solution of the present invention, the bottom of the extraction tank is provided with a discharge port, the bottom flange of the discharge port is connected to a three-way valve, the upper flange of the three-way valve is connected to a connecting pipe, a connecting pipe is provided between the first extraction tank and the second extraction tank, and a connecting pipe is provided between the second extraction tank and the third extraction tank.

[0010] As a further technical solution of the present invention, both the second extraction tank and the third extraction tank are provided with solvent injection ports, and the main concentration tank is provided with a cooling outer jacket.

[0011] As a further technical solution of the present invention, the cooling outer jacket is fitted with a concentration inner tank, a double-layer cooling pipe is provided between the cooling outer jacket and the concentration inner tank, the bottom of the concentration inner tank is provided with an outlet, and the bottom flange of the outlet is connected to a three-way valve.

[0012] As a further technical solution of the present invention, the bottom of the cooling outer jacket is provided with a through hole corresponding to the position of the outlet, the top of the concentration inner tank is fixedly connected with a second fixing plate, a second mounting plate is provided on the second fixing plate, and the top of the second mounting plate is provided with a feed port.

[0013] As a further technical solution of the present invention, the inner wall of the concentration tank is uniformly provided with a filter tank along the circumferential direction, the bottom end of the filter tank is provided with a mounting hole, the inner wall of the concentration tank is uniformly fixedly connected with a fixing column along the circumferential direction corresponding to the position of the mounting hole, a fiber ultrafiltration membrane is sleeved inside the filter tank, and a mounting cover is provided at the top of the filter tank.

[0014] Compared with existing technologies, the beneficial effects achieved by this invention are as follows: This invention adopts a structured design. The device, through the modular layout and flexible switching design of three independent extraction tanks in series and parallel, allows for the setting of extraction parameters in stages according to the dissolution characteristics of different active ingredients, forming a full-process extraction system of low-temperature softening, gradient dissolution, and deep enrichment. This effectively improves the comprehensive extraction efficiency of multiple active ingredients. At the same time, the triple temperature control and insulation structure of the sleeve heating wire, ceramic fiber filling layer, and insulation jacket achieves uniform heat conduction and precise temperature constantness, avoiding oil oxidation and component degradation caused by local overheating, and reducing heat loss. This significantly improves the stability of the extraction process and the consistency of product quality. Furthermore, the device constructs an integrated low-temperature concentration and purification system, improving production efficiency and ease of operation and maintenance. The cooling jacket and double-layer cooling pipe structure of the main concentration tank can create a mild low-temperature concentration environment, maximizing the retention of heat-sensitive active ingredients. Combined with the built-in modular fiber ultrafiltration membrane module, concentration and impurity separation are completed simultaneously, greatly improving product purity and eliminating the need for additional separation equipment, thus significantly optimizing the production process. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a right-view stereoscopic structural diagram of the present invention; Figure 3 This is an exploded cross-sectional view of the extraction vessel of the present invention. Figure 4 This is an exploded cross-sectional view of the concentration tank of the present invention. Figure 5 for Figure 4 A magnified structural diagram of region A in the middle.

[0017] In the diagram: 1. First support frame; 2. First extraction tank; 3. Second extraction tank; 4. Third extraction tank; 5. Second support frame; 6. Concentration main tank; 7. Outer extraction tank; 8. Inner extraction tank; 9. Heating wire sleeve; 10. Ceramic fiber filling layer; 11. Insulation jacket; 12. First fixing plate; 13. Top cover; 14. Fixing ring; 15. First mounting plate; 16. Feed inlet; 17. Discharge outlet; 18. Three-way valve; 19. Connecting pipe; 20. Solvent injection port; 21. Cooling outer jacket; 22. Double-layer cooling pipe; 23. Inner concentration tank; 24. Outlet; 25. Through hole; 26. Second fixing plate; 27. Second mounting plate; 28. Feed inlet; 29. ​​Filter tank installation; 30. Mounting hole; 31. Fixing column; 32. Fiber ultrafiltration membrane; 33. Mounting cover. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see the appendix Figure 1 -Appendix Figure 5This invention provides an embodiment of a gradient extraction and low-temperature membrane concentration device for red pine nut herbal tea, comprising a first support frame 1, on which a first extraction tank 2, a second extraction tank 3, and a third extraction tank 4 are disposed, with the second extraction tank 3 located on one side of the first extraction tank 2 and the third extraction tank 4 located on one side of the second extraction tank 3. A second support frame 5 is fixedly connected to the outer wall of one end of the first support frame 1, and a concentration main tank 6 is disposed on the second support frame 5. Each of the first extraction tank 2, the second extraction tank 3, and the third extraction tank 4 is provided with an outer extraction tank 7, within which an inner extraction tank 8 is fitted. The outer extraction tank 7 protects the internal components, and the inner extraction tank 8 serves as the raw material for the red pine nut. The core cavity for material extraction; a sleeve heating wire 9 is provided between the outer extraction tank 7 and the inner extraction tank 8, and a ceramic fiber filling layer 10 is provided between the outer extraction tank 7 and the inner extraction tank 8. The sleeve heating wire 9 provides stable heat for the extraction process, and the ceramic fiber filling layer 10 achieves uniform heat conduction and avoids local overheating; an insulating outer jacket 11 is fitted onto the outer surface of the outer extraction tank 7, and a first fixing plate 12 is fixedly connected to the top of the inner extraction tank 8. The insulating outer jacket 11 reduces heat loss, and the first fixing plate 12 provides a mounting base for the upper cover 13; an upper cover 13 is provided on the first fixing plate 12, and a first... Mounting plate 15, first fixed plate 12 has fixing rings 14 evenly arranged along the circumference, and the top cover 13 has a feed inlet 16. The fixing rings 14 are used to lock the first fixed plate 12 and the first mounting plate 15 to achieve a seal on the top cover 13. The feed inlet 16 is used to feed in red pine nuts. The bottom of the extraction outer tank 7 has a discharge port 17. The bottom flange of the discharge port 17 is connected to a three-way valve 18. The flange of the three-way valve 18 is connected to a connecting pipe 19. A connecting pipe 19 is provided between the first extraction tank 2 and the second extraction tank 3, and between the second extraction tank 3 and the third extraction tank 4. The discharge port 17 discharges the extract. The three-way valve 18 controls the material flow direction. 19. Material conveying between extraction tanks is achieved; solvent injection ports 20 are provided on the second extraction tank 3 and the third extraction tank 4, and a cooling outer jacket 21 is provided on the main concentration tank 6. The solvent injection port 20 is used to inject extraction solvents such as ethanol, and the cooling outer jacket 21 provides a temperature control space for low-temperature concentration; an inner concentration tank 23 is sleeved inside the cooling outer jacket 21, and a double-layer cooling pipe 22 is provided between the cooling outer jacket 21 and the inner concentration tank 23. An outlet 24 is provided at the bottom of the inner concentration tank 23, and a three-way valve 18 is connected to the bottom flange of the outlet 24. The double-layer cooling pipe 22 enhances the cooling effect and maintains the low-temperature environment of the inner concentration tank 23. The outlet 24 discharges the concentrate, and the three-way valve 18 regulates the flow direction of the concentrate.A through hole 25 is provided at the bottom of the cooling outer jacket 21 corresponding to the position of the outlet 24. A second fixing plate 26 is fixedly connected to the top of the concentration inner tank 23. A second mounting plate 27 is provided on the second fixing plate 26. An inlet 28 is provided at the top of the second mounting plate 27. The through hole 25 facilitates the discharge of the concentrate. The second fixing plate 26 and the second mounting plate 27 cooperate to fix the concentration inner tank 23. The inlet 28 receives the extract. Filter tanks 29 are evenly arranged along the circumference on the inner wall of the concentration inner tank 23. A mounting hole 30 is provided on one side of the bottom of the filter tank 29. Fixing posts 31 are evenly fixedly connected along the circumference on the inner wall of the concentration inner tank 23 corresponding to the position of the mounting hole 30. A fiber ultrafiltration membrane 32 is sleeved inside the filter tank 29. A mounting cover 33 is provided at the top of the filter tank 29. The fixing posts 31 cooperate with the mounting hole 30 to fix the filter tank 29. The fiber ultrafiltration membrane 32 retains active ingredients and filters impurities. The mounting cover 33 facilitates the disassembly and maintenance of the membrane module. ;

[0020] Working Principle: Using this invention, firstly, the top cover 13 is aligned and fitted with the bottom mounting plate 15 by the first fixing plate 12 at the top of the first extraction tank 2, the second extraction tank 3, and the third extraction tank 4. The fixing rings 14 evenly distributed along the circumference of the first fixing plate 12 are rotated to seal and fix the top cover 13 to the inner extraction tank 8. Then, the filter tank 29 is installed on the inner wall of the concentration tank 23. The filter tank 29 is aligned with the fixing post 31 at the corresponding position on the inner wall of the concentration tank 23 through the mounting hole 30 on one side of the bottom end, and inserted to achieve uniform circumferential fixation. Next, the fiber ultrafiltration membrane 32 is fitted inside the filter tank 29, and the mounting cover 33 is closed to complete the membrane assembly. Finally, the concentration tank 23 is connected to the second fixing plate 2 at the top. 6. Precisely align and fix the second mounting plate 27 at the top of the cooling outer jacket 21, ensuring that a pre-installed installation gap is reserved between the concentration inner tank 23 and the cooling outer jacket 21 to accommodate the double-layer cooling pipe 22. Simultaneously, ensure that the through hole 25 at the bottom of the cooling outer jacket 21 is coaxially aligned with the outlet 24 at the bottom of the concentration inner tank 23. Then, check all connections. Connect the three-way valves 18 to the discharge ports 17 at the bottom of the first extraction tank 2, the second extraction tank 3, and the third extraction tank 4, and the outlet 24 of the concentration inner tank 23, respectively, using flanges. Then, connect the corresponding three-way valves 18 between the first extraction tank 2 and the second extraction tank 3, and between the second extraction tank 3 and the third extraction tank 4, using connecting pipes 19. Finally, connect the three-way valve 18 of the third extraction tank 4 to the inlet 28 at the top of the concentration main tank 6 via connecting pipes 19. The first extraction tank 2, the second extraction tank 3, and the third extraction tank 4 are fixed to the first support frame 1, and the main concentration tank 6 is fixed to the second support frame 5 connected to one end of the outer wall of the first support frame 1, completing the overall device assembly. In the gradient extraction stage, the first extraction tank 2 is started first. The crushed red pine kernel raw material is fed into the inner extraction tank 8 through the feed port 16 of the top cover 13. After the feed port 16 is closed, the sleeve heating wire 9 between the outer extraction tank 7 and the inner extraction tank 8 is started. The low temperature softening parameters are set. The ceramic fiber filling layer 10 quickly conducts heat and ensures uniform temperature distribution inside the tank. The heat insulation jacket 11 on the outer surface of the outer extraction tank 7 reduces heat loss, realizing the softening of the red pine kernel cell wall and the initial dissolution of water-soluble polysaccharides. Then, the solvent is injected into the second extraction tank 3 through the solvent injection port 20. Inject the set concentration of ethanol solvent into the inner tank 8, and adjust its sleeve heating wire 9 to the target extraction temperature. After the first extraction tank 2 completes extraction, open its bottom three-way valve 18, and transport the extract to the inner extraction tank 8 of the second extraction tank 3 through the connecting pipe 19. Under the temperature control of the ceramic fiber filling layer 10, the active ingredients such as flavonoids and saponins are gradually dissolved. Then, inject an appropriate amount of polyethylene glycol auxiliary agent through the solvent injection port 20 of the third extraction tank 4, set a mild extraction temperature, open the three-way valve 18 of the second extraction tank 3, and introduce the extract into the inner extraction tank 8 of the third extraction tank 4 through the connecting pipe 19. Under the synergistic temperature control of the sleeve heating wire 9 and the ceramic fiber filling layer 10, the deep extraction of fat-soluble active ingredients is enhanced. During the low-temperature membrane concentration and purification stage...After extraction in the third extraction tank 4, adjust the bottom three-way valve 18 to allow the mixed extract to enter the concentration tank 23 through the inlet 28 via the connecting pipe 19. Simultaneously, circulating cooling medium is introduced into the double-layer cooling pipe 22 between the cooling outer jacket 21 and the concentration tank 23. This heat exchange lowers the internal temperature of the concentration tank 23, creating a low-temperature concentration environment to protect heat-sensitive components. The extract diffuses within the concentration tank 23 to the circumferentially distributed filter tanks 29. Through the retention effect of the fiber ultrafiltration membrane 32, small molecule impurities, residual oils, and fine particles in the red pine nut extract are separated, effectively reducing the concentration. The process involves concentration and enrichment. Filtered impurities are trapped on the surface of the fiber ultrafiltration membrane 32. The concentrated medicinal solution gathers at the bottom of the inner concentration tank 23. Finally, the three-way valve 18 at the bottom outlet 24 of the inner concentration tank 23 is opened, and the concentrated red pine nut herbal tea solution is discharged through the through-hole 25. The three-way valve 18 can be used to switch between diversion collection and subsequent processing paths as needed. After extraction, the fixing ring 14 is loosened, the top cover 13 is opened, and residual material in the inner extraction tank 8 is cleaned. The connecting pipe 19 and the three-way valve 18 are disassembled, and the mounting cover 33 is opened to remove the fiber ultrafiltration membrane 32 for cleaning or replacement, ensuring stable operation of the device in the next operation.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A combined device for gradient extraction and low-temperature membrane concentration of red pine nut herbal tea, comprising a first support frame (1), characterized in that: The first support frame (1) is provided with a first extraction tank (2), a second extraction tank (3) and a third extraction tank (4), and the second extraction tank (3) is located on one side of the first extraction tank (2), and the third extraction tank (4) is located on one side of the second extraction tank (3). A second support frame (5) is fixedly connected to the outer wall of one end of the first support frame (1), and a concentration main tank (6) is provided on the second support frame (5).

2. The combined device for gradient extraction and low-temperature membrane concentration of red pine nut herbal tea according to claim 1, characterized in that: The first extraction tank (2), the second extraction tank (3) and the third extraction tank (4) are each provided with an outer extraction tank (7), and an inner extraction tank (8) is fitted inside the outer extraction tank (7).

3. The combined device for gradient extraction and low-temperature membrane concentration of red pine nut herbal tea according to claim 2, characterized in that: A sleeve heating wire (9) is provided between the outer extraction tank (7) and the inner extraction tank (8), and a ceramic fiber filling layer (10) is provided between the outer extraction tank (7) and the inner extraction tank (8).

4. The combined device for gradient extraction and low-temperature membrane concentration of red pine nut herbal tea according to claim 3, characterized in that: The outer surface of the extraction outer can (7) is covered with an insulating outer jacket (11), and the top of the extraction inner can (8) is fixedly connected with a first fixing plate (12).

5. The combined device for gradient extraction and low-temperature membrane concentration of red pine nut herbal tea according to claim 4, characterized in that: The first fixed plate (12) is provided with a top cover (13). The bottom outer surface of the top cover (13) is fixedly connected with a first mounting plate (15) at a position corresponding to the first fixed plate (12). The first fixed plate (12) is evenly provided with fixing rings (14) along the circumferential direction. The top cover (13) is provided with a feed port (16).

6. The combined device for gradient extraction and low-temperature membrane concentration of red pine nut herbal tea according to claim 2, characterized in that: The bottom of the extraction tank (7) is provided with a discharge port (17), and a three-way valve (18) is connected to the bottom flange of the discharge port (17). A connecting pipe (19) is connected to the flange of the three-way valve (18). A connecting pipe (19) is provided between the first extraction tank (2) and the second extraction tank (3). A connecting pipe (19) is provided between the second extraction tank (3) and the third extraction tank (4).

7. The combined device for gradient extraction and low-temperature membrane concentration of red pine nut herbal tea according to claim 1, characterized in that: The second extraction tank (3) and the third extraction tank (4) are both provided with solvent injection ports (20), and the main concentration tank (6) is provided with a cooling outer jacket (21).

8. The combined device for gradient extraction and low-temperature membrane concentration of red pine nut herbal tea according to claim 7, characterized in that: The cooling outer jacket (21) is fitted with a concentration inner tank (23). A double-layer cooling pipe (22) is provided between the cooling outer jacket (21) and the concentration inner tank (23). An outlet (24) is opened at the bottom of the concentration inner tank (23), and a three-way valve (18) is connected to the bottom flange of the outlet (24).

9. The combined device for gradient extraction and low-temperature membrane concentration of red pine nut herbal tea according to claim 8, characterized in that: The bottom of the cooling outer jacket (21) is provided with a through hole (25) corresponding to the position of the outlet (24). The top of the concentration inner tank (23) is fixedly connected to a second fixed plate (26). A second mounting plate (27) is provided on the second fixed plate (26). The top of the second mounting plate (27) is provided with a feed inlet (28).

10. The combined device for gradient extraction and low-temperature membrane concentration of red pine nut herbal tea according to claim 9, characterized in that: The inner wall of the concentration tank (23) is uniformly provided with a filter tank (29) along the circumferential direction. The bottom side of the filter tank (29) is provided with a mounting hole (30). The inner wall of the concentration tank (23) is uniformly fixedly connected with a fixing column (31) along the circumferential direction corresponding to the position of the mounting hole (30). The filter tank (29) is fitted with a fiber ultrafiltration membrane (32). The top of the filter tank (29) is provided with a mounting cover (33).

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