Equipment for extracting total flavonoids from hippophae rhamnoides leaves

Abstract

The utility model relates to the technical field of total flavone extraction, in particular to equipment for extracting total flavone from sea-buckthorn leaves, which comprises a liquid supply unit, a sea-buckthorn leaf crushing unit, an extracting solution mixing unit, an extracting solution filtering unit and a total flavone evaporation unit, hippophae rhamnoides leaves are crushed by arranging the hippophae rhamnoides leaf crushing unit, then the crushed hippophae rhamnoides leaves are discharged into the extracting solution mixing unit, then ethanol provided by the liquid supply unit is uniformly mixed with the crushed hippophae rhamnoides leaves in the extracting solution mixing unit to obtain an extracting solution, and then the mixed extracting solution is filtered by the extracting solution filtering unit; and finally, the total flavonoids are evaporated and dried through the total flavonoids evaporation unit, extraction of the total flavonoids of the hippophae rhamnoides leaves is completed, the structure is simple, the integration degree is high, operation is convenient, the manual operation difficulty is reduced, the working efficiency is improved, and the actual extraction requirement is met.

Description

Technical Field

[0001] The utility model relates to the technical field of total flavonoids extraction, in particular to a device for extracting total flavonoids from seabuckthorn leaves. Background Art

[0002] Seabuckthorn is a plant of the genus Hippophae rhamnoides of the family Elaeagnaceae. my country's seabuckthorn resources rank first in the world. Because of its multiple physiological effects such as digestion and anti-inflammatory, its ability to withstand harsh environments, and its strong vitality, its application in the fields of medicine, food, forestry, etc. is increasingly valued. Seabuckthorn total flavonoids are the main bioactive ingredients extracted from the natural plant seabuckthorn. Modern medicine shows that seabuckthorn total flavonoids have multiple pharmacological effects such as anti-myocardial ischemia, lowering blood lipids, anti-tumor, and regulating the immune system. It also has the function of directly scavenging superoxide anions and hydroxyl free radicals. Its scavenging effect is stronger than that of vitamin E, and its anti-aging effect is obvious.

[0003] When extracting total flavonoids from seabuckthorn leaves, the seabuckthorn leaves need to be crushed first, extracted with 30% to 60% ethanol, filtered to obtain a filtrate and a filter residue, and then the filtrate is concentrated and dried to obtain a total flavonoid extract of seabuckthorn branches and leaves; for example, the Chinese invention patent application with application number 201710901080.1 discloses a method for extracting total flavonoids from seabuckthorn branches and leaves;

[0004] However, the above extraction process usually needs to be completed by multiple devices. The various steps are not continuous and require manual material collection and discharge, resulting in low efficiency and high cost of total flavonoids extraction from sea buckthorn leaves, which cannot meet actual extraction needs. Utility Model Content

[0005] The utility model aims to provide a device for extracting total flavonoids from seabuckthorn leaves to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A device for extracting total flavonoids from seabuckthorn leaves, comprising a liquid supply unit, a seabuckthorn leaf crushing unit, an extract mixing unit, an extract filtering unit and a total flavonoids evaporation unit;

[0008] The liquid supply unit is connected to the extract mixing unit through an infusion tube, the seabuckthorn leaf crushing unit is connected to the extract mixing unit through a feed pipe, the extract mixing unit is connected to the extract filtering unit through a conduit, and the extract filtering unit is connected to the total flavonoid evaporation unit through an extraction pump.

[0009] It is further defined that the liquid supply unit includes a liquid storage tank, a measuring cylinder connected to the liquid storage tank, and a liquid supply drive connected to the measuring cylinder;

[0010] The infusion tube is arranged at the bottom of the peripheral side of the measuring cylinder and is in communication with the measuring cylinder.

[0011] It is further defined that the liquid supply drive comprises a bracket, a first telescopic drive member and a piston, the bracket is sleeved on the outside of the measuring cylinder and connected to the measuring cylinder, the piston is located inside the measuring cylinder and closely matches the measuring cylinder, the fixed end of the first telescopic drive member is connected to the top of the bracket, and the output end of the first telescopic drive member extends to the inside of the measuring cylinder and is connected to the piston;

[0012] The measuring cylinder is connected with the liquid storage tank through a liquid extraction tube.

[0013] It is further defined that the sea buckthorn leaf crushing unit comprises a crushing tank, a second rotary drive member and a crushing knife group;

[0014] The crushing knife group is arranged in the crushing tank, the fixed end of the second rotating drive member is connected to the outer wall of the crushing tank, the output end of the second rotating drive member extends into the crushing tank and is connected to the crushing knife group, the feed pipe is arranged at the bottom of the crushing tank, and a screen is arranged on the top of the feed pipe.

[0015] It is further defined that the inner wall of the crushing tank is also provided with fixed blades, and the fixed blades are arranged alternately with the crushing knife group.

[0016] It is further defined that the extract mixing unit comprises a mixing tank, a first rotary drive member and a first stirring paddle;

[0017] The first stirring paddle is arranged in the mixing tank, the fixed end of the first rotating driving member is arranged outside the mixing tank, and the output end of the first rotating driving member extends into the mixing tank and is connected to the first stirring paddle;

[0018] The feed pipe and the liquid infusion pipe are both connected to the mixing tank, and the conduit is arranged at the bottom of the mixing tank.

[0019] It is further defined that the extract filtration unit includes a filtration body, the mixing tank is arranged above the filtration body, a filtration chamber is opened in the filtration body, a purification filter plate is arranged in the filtration chamber, the mixing tank is connected with the liquid inlet end of the filtration chamber through a conduit, the liquid inlet end of the filtration chamber is located above the purification filter plate, the liquid outlet end of the filtration chamber is connected with the total flavonoids evaporation unit through an extraction pump, and the liquid outlet end of the filtration chamber is located below the purification filter plate.

[0020] It is further defined that the extract filtration unit further comprises a filter press box, a second telescopic drive member, a filter press plate and a separation filter plate;

[0021] The separation filter plate and the filter press plate are both arranged inside the filter press box, the separation filter plate is connected to the filter press box, the separation filter plate is located below the filter press plate, and the liquid outlet end of the conduit is located between the separation filter plate and the filter press plate;

[0022] The fixed end of the second telescopic driving member is located outside the filter press box, the output end of the second telescopic driving member extends to the inside of the filter press box and is connected to the filter press plate, and the conduit is connected to the liquid inlet end of the filter chamber through the filter press box.

[0023] It is further defined that the total flavonoids evaporation unit comprises an evaporation tank, a heating block, a third rotary drive member and a second stirring paddle;

[0024] The heating block is arranged on the peripheral side of the evaporation tank, the second stirring paddle is arranged inside the evaporation tank, the fixed end of the third rotating driving member is arranged outside the evaporation tank, the output end of the third rotating driving member extends to the inside of the evaporation tank and is connected to the second stirring paddle; and a discharge pipe is arranged at the bottom of the evaporation tank.

[0025] It is further defined that the total flavonoids evaporation unit also includes a scraper plate, which is located inside the evaporation tank and connected to the output end of the third rotary drive member, the scraper plate is located below the second stirring paddle, and the scraper plate contacts the bottom inner wall of the evaporation tank.

[0026] Compared with the prior art, the beneficial effects of the utility model are:

[0027] 1. The utility model provides a seabuckthorn leaf crushing unit to crush the seabuckthorn leaves and then discharge them into an extract mixing unit, and then provides ethanol through a liquid supply unit to mix the crushed seabuckthorn leaves evenly in the extract mixing unit to obtain an extract, then passes the mixed extract through an extract filtering unit to filter the residue, and finally evaporates and dries through a total flavonoids evaporation unit to complete the extraction of total flavonoids from seabuckthorn leaves. The utility model has a simple structure and a high degree of integration, is easy to operate, reduces the difficulty of manual operation, improves work efficiency, and meets actual extraction needs.

[0028] 2. The utility model provides a measuring cylinder and a liquid supply drive, so that when supplying liquid to the mixing tank, the liquid can be quantitatively supplied according to demand, meeting the actual mixing needs and ensuring stable and reliable extraction; at the same time, the extract is double-filtered by the filter body and the filter press box to improve the filtration quality, ensure the total flavonoid extraction quality, and meet the actual extraction needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0030] Figure 2 It is a partial enlarged structural schematic diagram of the utility model;

[0031] Figure 3 This is an enlarged structural diagram of the crushing tank of the utility model;

[0032] Figure 4 This is an enlarged structural diagram of the evaporation tank of the utility model;

[0033] Figure 5 For the utility model Figure 1 Enlarged structural diagram at A in the middle.

[0034] In the figure: 1. Filter body; 2. Liquid storage tank; 3. Bracket; 4. Measuring cylinder; 5. Crushing tank; 6. Mixing chamber; 7. First stirring paddle; 8. First rotating drive member; 9. Evaporation tank; 10. Extraction pump; 11. Filter chamber; 12. Purification filter plate; 13. Piston; 14. First telescopic drive member; 15. Infusion tube; 16. Extraction tube; 17. Crushing knife group; 18. Fixed blade; 19. Second rotating drive member; 20. Feeding pipe; 21. Screen; 22. Heating block; 23. Third rotating drive member; 24. Second stirring paddle; 25. Scraper plate; 26. Discharge pipe; 27. Conduit; 28. Filter press box; 29. ​​Separation filter plate; 30. Second telescopic drive member; 31. Filter press plate. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the utility model shall fall within the scope of protection of the utility model.

[0036] See also Figure 1-5 The utility model provides a device for extracting total flavonoids from seabuckthorn leaves, comprising a liquid supply unit for providing an ethanol solution, a seabuckthorn leaf crushing unit for crushing the seabuckthorn leaves, an extract mixing unit for mixing the crushed seabuckthorn leaves with ethanol, an extract filtering unit for filtering the mixed extract, and a total flavonoids evaporation unit for evaporating and drying the filtered extract.

[0037] Among them, the liquid supply unit is connected to the extraction liquid mixing unit through the infusion tube 15, the sea buckthorn leaf crushing unit is connected to the extraction liquid mixing unit through the feeding pipe 20, the extraction liquid mixing unit is connected to the extraction liquid filtration unit through the conduit 27, and the extraction liquid filtration unit is connected to the total flavonoids evaporation unit through the extraction pump 10.

[0038] To further explain, the liquid supply unit includes a liquid storage tank 2 , a measuring cylinder 4 connected to the liquid storage tank 2 , and a liquid supply drive connected to the measuring cylinder 4 . The liquid supply drive includes a bracket 3 , a first telescopic drive member 14 , and a piston 13 .

[0039] An ethanol inlet is provided at the end of the liquid storage tank 2 for injecting ethanol solution; the bracket 3 and the measuring cylinder 4 are both installed on the top of the liquid storage tank 2, the bracket 3 is sleeved on the outside of the measuring cylinder 4 and connected to the outer wall of the measuring cylinder 4, the measuring cylinder 4 is provided with a scale, and the bottom end of the measuring cylinder 4 is connected to the liquid storage tank 2 through the liquid extraction tube 16, and the liquid extraction tube 16 extends to the bottom of the liquid storage tank 2.

[0040] The piston 13 is arranged inside the liquid storage tank 2 and fits tightly with the liquid storage tank 2. The fixed end of the first telescopic driving member 14 is connected to the bracket 3. The output end of the first telescopic driving member 14 passes through the top of the measuring cylinder 4 and extends to the inside of the measuring cylinder 4. The output end of the first telescopic driving member 14 is connected to the piston, so that when working, when the telescopic end of the first telescopic driving member 14 drives the piston 13 to move upward, the volume pressure between the piston 13 and the bottom of the measuring cylinder 4 is reduced, thereby sucking the ethanol solution in the liquid storage tank 2 into the measuring cylinder 4, and at the same time, the required volume of ethanol solution is obtained according to the scale on the measuring cylinder 4.

[0041] When the output end of the first telescopic driving member 14 drives the piston 13 to move downward, the ethanol solution in the measuring cylinder 4 is pressed into the extracting liquid mixing unit through the infusion tube 15, which is easy to operate and can quantitatively take and supply liquid; the infusion tube 15 is arranged at the bottom of the measuring cylinder 4 to discharge all the ethanol solution in the measuring cylinder 4 to avoid ethanol residue.

[0042] To further explain, the sea buckthorn leaf crushing unit includes a crushing tank 5 , a second rotary drive member 19 and a crushing knife group 17 .

[0043] A feed port is provided at the top of the crushing tank 5 for feeding the prepared sea buckthorn leaves into the crushing tank 5. The fixed end of the second rotating driving member 19 is fixedly installed on the outside of the crushing tank 5. The output end of the second rotating driving member 19 passes through the top of the crushing tank 5 and extends to the inside of the crushing tank 5. The crushing knife group 17 is arranged inside the crushing tank 5. The crushing knife group 17 is connected to the output end of the second rotating driving member 19, so that when the second rotating driving member 19 rotates, the sea buckthorn leaves are crushed by the crushing knife group 17 to obtain sea buckthorn leaf powder.

[0044] In order to improve the crushing efficiency, fixed blades 18 are selected to be arranged on the inner wall of the crushing tank 5 . The number of fixed blades 18 is plural, and the multiple fixed blades 18 are staggered with the crushing knife group 17 .

[0045] The crushed seabuckthorn leaf powder is discharged into the extract mixing unit through a discharge pipe 20 provided at the bottom of the crushing tank 5, so as to be mixed with the ethanol solution later.

[0046] In order to prevent the sea buckthorn leaves from falling into the extract mixing unit through the feed pipe 20 when they are not fully crushed, a screen 21 is provided on the feed pipe 20 .

[0047] To further explain, the extraction liquid mixing unit includes a mixing tank 6 , a first rotary driving member 8 and a first stirring paddle 7 .

[0048] The top of the mixing tank 6 is connected to the feed pipe 20, the side wall of the mixing tank 6 is connected to the infusion tube 15, the fixed end of the first rotating drive member 8 is selectively installed on the outside of the mixing tank 6, the output end of the first rotating drive member 8 passes through the mixing tank 6 and extends to the inside of the mixing tank 6, the first stirring paddle 7 is arranged inside the mixing tank 6, the first stirring paddle 7 is connected to the output end of the first rotating drive member 8, and the first stirring paddle 7 is driven by the first rotating drive member 8 to fully mix the ethanol solution and sea buckthorn leaf powder in the mixing tank 6 to obtain an extract.

[0049] The conduit 27 is disposed at the bottom of the mixing tank 6 to fully discharge the extract so as to avoid the extract remaining in the mixing tank 6 .

[0050] To further explain, the extract filtration unit comprises a filtration body 1 , in which a filtration chamber 11 is provided, and in which a purification filter plate 12 is provided.

[0051] The purification filter plate 12 is installed in the middle position of the filter chamber 11, and the purification filter plate 12 is close to the inner wall of the filter chamber 11. The mixing tank 6 discharges the extract into the filter chamber 11 above the purification filter plate 12 through the conduit 27. The mixing tank 6 is selectively arranged above the filter body 1, so as to facilitate the extract to actively flow into the filter chamber 11 with the help of gravity, thereby reducing costs.

[0052] The extract is filtered through the purification filter plate 12 and falls into the filter chamber 11 below the purification filter plate 12 . Then, the filtered extract is injected into the total flavonoid evaporation unit through the extraction pump 10 connected to the bottom of the filter chamber 11 .

[0053] To further explain, the extract filtration unit also includes a filter press box 28 , a second telescopic driving member 30 , a filter press plate 31 and a separation filter plate 29 .

[0054] The filter press box 28 is located between the filter body 1 and the mixing tank 6, and the conduit 27 is connected to the filter chamber 11 through the filter press box 28; the second telescopic driving member 30 is installed on the outside of the filter press box 28, and the output end of the second telescopic driving member 30 extends through the filter press box 28 to the inside of the filter press box 28, the filter press plate 31 and the separation filter plate 29 are both arranged inside the filter press box 28, the filter press plate 31 is connected to the output end of the second telescopic driving member 30, and the separation filter plate 29 is installed in the middle and lower position of the filter press box 28, so that the extract first falls on the top of the separation filter plate 29 through the conduit 27, and then the output end of the second telescopic driving member 30 drives the filter press plate 31 to squeeze the extract, so as to avoid waste caused by insufficient filtration of the extract.

[0055] The extract after the preliminary filtration flows into the purification filter plate 12 in the filtration chamber 11 for secondary filtration to improve the filtration quality.

[0056] The total flavonoids evaporation unit comprises an evaporation tank 9 , a heating block 22 , a third rotary driving member 23 and a second stirring paddle 24 .

[0057] The heating block 22 is arranged on the peripheral side of the evaporation tank 9 for heating the evaporation tank 9, the second stirring paddle 24 is arranged inside the evaporation tank 9, the fixed end of the third rotary driving member 23 is arranged outside the evaporation tank 9, the output end of the third rotary driving member 23 extends to the inside of the evaporation tank 9, and the output end of the third rotary driving member 23 is connected to the second stirring paddle 24, so that the extracted liquid after filtration is injected into the evaporation tank 9 through the extraction pump 10, and then the extracted liquid is dried by heating and evaporation, and the second stirring paddle 24 is driven by the third rotary driving member 23 to stir the extracted liquid, thereby accelerating the drying efficiency; after drying, total flavonoids can be obtained, and finally the obtained total flavonoids are discharged through the discharge pipe 26 arranged at the bottom of the evaporation tank 9, thereby completing the extraction of total flavonoids from seabuckthorn leaves.

[0058] Preferably, the total flavonoids evaporation unit also includes a scraper plate 25, which is located in the evaporation tank 9 and connected to the output end of the third rotating drive member 23. The scraper plate 25 is located below the second stirring paddle 24. The scraper plate 25 contacts the bottom of the inner wall of the evaporation tank 9 and is used to scrape out the total flavonoids adhered to or accumulated on the bottom of the evaporation tank 9 to improve the extraction quality.

[0059] Working process:

[0060] First, put the seabuckthorn leaves into the crushing tank 5, the screen 21 intercepts the seabuckthorn leaves, the second rotating drive member 19 drives the crushing knife group 17 to rotate, and the seabuckthorn leaves are crushed into powder under the crushing action of the crushing knife group 17. The setting of the fixed blade 18 improves the crushing efficiency and makes the crushing more thorough. The seabuckthorn powder passes through the screen 21 and falls into the mixing chamber 6 at the top of the filter body 1 through the feed pipe 20. Then, the valve at the end of the infusion tube 15 is closed, the valve at the end of the extraction tube 16 is opened, and the first telescopic drive member 14 drives the piston 13 to move upward, so that the ethanol solution in the liquid storage tank 2 is discharged through the extraction tube 16. The first retractable driving member 14 drives the piston 13 to move downward, and the ethanol solution in the measuring cylinder 4 is pressed into the mixing chamber 6 through the infusion tube 15, and mixed with the sea buckthorn powder to obtain an extract. At the same time, the first rotating driving member 8 drives the first stirring paddle 7 to rotate, and the extract is fully stirred. The valve at the end of the conduit 27 is opened, so that the extract flows into the filter press box 28 through the conduit 27, passes through the separation filter plate 29, and then flows into the filter press box 28. After filtering and separation, the filtrate flows into the filter chamber 11 through the conduit 27 at the bottom end of the filter press box 28, and the filter residue remains on the surface of the separation filter plate 29. At this time, the second telescopic driving member 30 drives the filter press plate 31 to move downward, and the filter press plate 31 presses the filter residue on the separation filter plate 29 to squeeze out the residual filter liquid in the filter residue, thereby reducing the waste of the filtrate. Then, the filtrate enters the filter chamber 11 and passes through the purification filter plate 12 to filter out the impurities in the filtrate, and double purification is performed. The extraction pump 10 pumps the purified filtrate into the evaporation tank 9, and the heating block 22 heats and evaporates the filtrate, so that the filtrate is concentrated directly. The flavonoids extract of seabuckthorn branches and leaves is obtained by drying. During the concentration process, the third rotary drive member 23 drives the second stirring paddle 24 to rotate, continuously stirring the filtrate, and the scraper plate 25 stirs the filtrate at the bottom of the evaporation tank 9 to prevent the bottom from forming. Finally, the valve inside the discharge pipe 26 is opened to discharge the total flavonoids extract through the discharge pipe 26. The equipment integrates crushing, extraction, filtration, concentration and drying, has a high degree of integration, and each link is connected. It can automatically take and discharge materials, has high extraction efficiency, is convenient for automatically controlling the amount of ethanol to be added, and can effectively reduce the waste of filtrate, and has strong practicality.

[0061] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0062] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0063] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0064] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for extracting total flavonoids from seabuckthorn leaves, characterized in that: It includes a liquid supply unit, a sea buckthorn leaf crushing unit, an extract mixing unit, an extract filtering unit and a total flavonoids evaporation unit; The liquid supply unit is connected to the extract mixing unit via a liquid infusion tube (15), the sea buckthorn leaf crushing unit is connected to the extract mixing unit via a feed tube (20), the extract mixing unit is connected to the extract filtering unit via a conduit (27), and the extract filtering unit is connected to the total flavonoid evaporation unit via an extraction pump (10).

2. The device for extracting total flavonoids from seabuckthorn leaves according to claim 1, characterized in that: The liquid supply unit comprises a liquid storage tank (2), a measuring cylinder (4) connected to the liquid storage tank (2), and a liquid supply drive connected to the measuring cylinder (4); The infusion tube (15) is arranged at the bottom of the peripheral side of the measuring cylinder (4) and is in communication with the measuring cylinder (4).

3. The device for extracting total flavonoids from seabuckthorn leaves according to claim 2, characterized in that: The liquid supply drive comprises a bracket (3), a first telescopic drive member (14) and a piston (13); the bracket (3) is sleeved on the outside of the measuring cylinder (4) and connected to the measuring cylinder (4); the piston (13) is located inside the measuring cylinder (4) and closely matches the measuring cylinder (4); the fixed end of the first telescopic drive member (14) is connected to the top of the bracket (3); and the output end of the first telescopic drive member (14) extends to the inside of the measuring cylinder (4) and is connected to the piston (13); The measuring cylinder (4) is connected to the liquid storage tank (2) via a liquid extraction tube (16).

4. The device for extracting total flavonoids from seabuckthorn leaves according to claim 3, characterized in that: The sea buckthorn leaf crushing unit comprises a crushing tank (5), a second rotating driving member (19) and a crushing knife group (17); The crushing knife group (17) is arranged in the crushing tank (5), the fixed end of the second rotary drive member (19) is connected to the outer wall of the crushing tank (5), the output end of the second rotary drive member (19) extends into the crushing tank (5) and is connected to the crushing knife group (17), the discharge pipe (20) is arranged at the bottom of the crushing tank (5), and a screen (21) is arranged on the top of the discharge pipe (20).

5. The device for extracting total flavonoids from seabuckthorn leaves according to claim 4, characterized in that: The inner wall of the crushing tank (5) is also provided with fixed blades (18), and the fixed blades (18) and the crushing blade group (17) are arranged alternately.

6. The device for extracting total flavonoids from seabuckthorn leaves according to claim 4, characterized in that: The extraction liquid mixing unit comprises a mixing tank (6), a first rotating driving member (8) and a first stirring paddle (7); The first stirring paddle (7) is arranged in the mixing tank (6), the fixed end of the first rotating driving member (8) is arranged outside the mixing tank (6), and the output end of the first rotating driving member (8) extends into the mixing tank (6) and is connected to the first stirring paddle (7); The feed pipe (20) and the liquid infusion pipe (15) are both connected to the mixing tank (6), and the conduit (27) is arranged at the bottom of the mixing tank (6).

7. The device for extracting total flavonoids from seabuckthorn leaves according to claim 6, characterized in that: The extract filtration unit comprises a filtration body (1), the mixing tank (6) is arranged above the filtration body (1), a filtration chamber (11) is provided in the filtration body (1), a purification filter plate (12) is provided in the filtration chamber (11), the mixing tank (6) is connected to the liquid inlet end of the filtration chamber (11) through a conduit (27), the liquid inlet end of the filtration chamber (11) is located above the purification filter plate (12), the liquid outlet end of the filtration chamber (11) is connected to the total flavonoid evaporation unit through an extraction pump (10), and the liquid outlet end of the filtration chamber (11) is located below the purification filter plate (12).

8. The device for extracting total flavonoids from seabuckthorn leaves according to claim 7, characterized in that: The extract filtration unit further comprises a filter press box (28), a second telescopic driving member (30), a filter press plate (31) and a separation filter plate (29); The separation filter plate (29) and the filter press plate (31) are both arranged inside the filter press box (28), the separation filter plate (29) is connected to the filter press box (28), the separation filter plate (29) is located below the filter press plate (31), and the liquid outlet end of the conduit (27) is located between the separation filter plate (29) and the filter press plate (31); The fixed end of the second telescopic driving member (30) is located outside the filter press box (28), the output end of the second telescopic driving member (30) extends to the inside of the filter press box (28) and is connected to the filter press plate (31), and the conduit (27) is connected to the liquid inlet end of the filter chamber (11) through the filter press box (28).

9. The device for extracting total flavonoids from seabuckthorn leaves according to claim 8, characterized in that: The total flavonoids evaporation unit comprises an evaporation tank (9), a heating block (22), a third rotary drive member (23) and a second stirring paddle (24); The heating block (22) is arranged on the peripheral side of the evaporation tank (9), the second stirring paddle (24) is arranged inside the evaporation tank (9), the fixed end of the third rotary driving member (23) is arranged outside the evaporation tank (9), and the output end of the third rotary driving member (23) extends to the inside of the evaporation tank (9) and is connected to the second stirring paddle (24); and a discharge pipe (26) is arranged at the bottom of the evaporation tank (9).

10. The device for extracting total flavonoids from seabuckthorn leaves according to claim 9, characterized in that: The total flavonoids evaporation unit further comprises a scraper plate (25), the scraper plate (25) being located inside the evaporation tank (9) and connected to the output end of the third rotary drive member (23), the scraper plate (25) being located below the second stirring paddle (24), and the scraper plate (25) being in contact with the bottom inner wall of the evaporation tank (9).

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