Pine needle flavone extraction device based on enzyme assistance

Abstract

The invention discloses an enzyme-assisted pine needle flavone extraction device, which comprises an enzyme supply assembly for putting an enzyme solution into an extraction tank body, and a feeding pipe for putting pine needle powder is fixedly inserted into the extraction tank body. A dispersing mechanism for dispersing pine needle powder introduced by the feeding pipe to different height positions is arranged in the extraction tank body, and a driving motor for enabling the pine needle powder fed at the different height positions to be distributed in a circumferential dispersing manner when the dispersing mechanism is driven to rotate is mounted at the top of the extraction tank body; the dispersing mechanism comprises a middle shaft rod in transmission connection with the driving motor and a guide assembly fixedly arranged on the outer surface of the middle shaft rod in a sleeving mode, and a cavity is formed in the middle shaft rod. According to the invention, multi-depth-level all-directional feeding can be realized, the dispersity is improved, single-point accumulation and floating phenomena are reduced, the flowing and mixing of extract liquor are facilitated, and the extraction is more uniform and thorough.

Description

Technical Field

[0001] The invention relates to the technical field of extraction, in particular to an enzyme-assisted pine needle flavonoid extraction device. Background Art

[0002] Pine needle flavonoid extraction extracts flavonoid components from pine needles through efficient and environmentally friendly technology, giving these components higher biological activity and clinical application value. The cell wall of pine needles is mainly composed of substances such as cellulose, hemicellulose and lignin. Enzymes can decompose or modify these substances, increase the permeability of the cell wall, and thus more easily release the flavonoid components in the cell. In the actual extraction process, it is necessary to put the pine needle powder into the extracting solution for mixing. On this basis, since the pine needle powder is conventionally put into only one position on the surface of the extracting solution inside the extraction tank, there is more pine needle powder at this position. It is easy to agglomerate itself and under the buoyancy of water, the powder may float on the surface instead of being evenly distributed in the extracting solution. This will cause the pine needle powder to be difficult to fully contact the water body in the early stage, affecting the dissolution and extraction efficiency of the effective ingredients (such as flavonoid compounds). Summary of the invention

[0003] In view of the deficiencies of the prior art, the purpose of the present invention is to provide an enzyme-assisted pine needle flavonoid extraction device to solve the problem mentioned in the above background technology that the pine needle powder is easily agglomerated and floats on the surface of the extract when it is put into the extraction tank.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an enzyme-assisted pine needle flavonoid extraction device, comprising an enzyme supply assembly for feeding an enzyme solution into an extraction tank body, a feeding pipe for feeding pine needle powder fixedly plugged into the extraction tank body, a dispersing mechanism for dispersing the pine needle powder introduced by the feeding pipe to different height positions is arranged inside the extraction tank body, and a driving motor is installed on the top of the extraction tank body, which, when driving the dispersing mechanism to rotate, makes the pine needle powder fed at different height positions be arranged in a circumferentially scattered shape;

[0005] The dispersion mechanism includes a central axis rod that is transmission-connected to a driving motor and a guide assembly that is fixedly sleeved on the outer surface of the central axis rod. A cavity is provided inside the central axis rod. The guide assembly is used to guide the pine needle powder introduced by a feeding pipe into the cavity for dispersion. A plurality of distribution assemblies for dispersing and exporting the pine needle powder in the cavity at different heights are installed on the outer surface of the central axis rod, and the plurality of distribution assemblies are arranged in an upper and lower staggered manner.

[0006] Preferably, the outer surface of the central axis rod is provided with a slot for interconnecting the cavity and the interior of the guide assembly, and the bottom wall of the slot is inclined downward from the outside to the inside, and a plurality of staggered spoiler plates are installed on the inner wall of the central axis rod, and the spoiler plates are located below the slot.

[0007] Preferably, the inner wall of the central shaft is also provided with a plurality of slide plates for guiding the dispersed pine needle powder in the inner cavity of the central shaft into a plurality of dispensing assemblies in multiple strands;

[0008] The bottom group of slide plates are arranged in an inclined circular plate shape and fit with the inner wall of the central axis rod. The remaining slide plates are arranged in an inclined U-shaped plate shape and their width is smaller than the inner diameter of the central axis rod.

[0009] Preferably, the dispensing assembly comprises a cylindrical tube mounted on the surface of the central shaft rod for receiving the pine needle powder slidingly transferred from the slide plate, and an electric control valve 1 and an electric control valve 2 arranged up and down are mounted on the cylindrical tube;

[0010] The cylindrical tube consists of a feed pipe, a storage pipe connected to the bottom of the feed pipe, and a discharge pipe connected to the tail end of the storage pipe, and the inclination angle of the feed pipe is consistent with the inclination angle of the slide plate. The electric control valve 1 and the electric control valve 2 are respectively installed in the middle section of the feed pipe and the tail section of the storage pipe, and the inclination angle of the discharge pipe is between 15° and 30°.

[0011] Preferably, the discharge pipe is provided with a plurality of water inlet grooves for dispersing the water inside the extraction tank body to impact and disperse the pine needle powder inside the discharge pipe when the driving motor drives the central axis rod and the cylindrical tube to rotate. A plurality of water outlet grooves are provided at the bottom of the discharge pipe for discharging the mixed liquid of the pine needle powder and the water body.

[0012] Preferably, the inner diameter of the water inlet trough gradually decreases from the outside to the inside, the inner diameter of the water outlet trough gradually increases from the outside to the inside, and the angle of the extension line between the water outlet trough, the water inlet trough and the center line of the discharge pipe is greater than 90°;

[0013] The outer surface of the central shaft is provided with a plurality of stirring structures arranged up and down, the stirring structure is composed of three stirring blades arranged equidistantly in a ring shape, and the discharge pipe is embedded in the middle part of one of the stirring blades.

[0014] Preferably, the enzyme supply assembly includes an auxiliary tank installed on the side of the extraction tank body, a suction pump for extracting the internal enzyme solution is installed on the top of the auxiliary tank, and a delivery pipeline extending downward along the top of the extraction tank body to the inside of the guide assembly is connected to the output end of the suction pump.

[0015] Preferably, the guide assembly includes a receiving bucket installed on the outer surface of the central axis rod, and a spiral plate is installed on the inner wall of the receiving bucket for guiding the pine needle powder to spirally slide into the slot, and the top surface of the spiral plate surrounding the outer part of the slot is higher than the height position of the bottom wall of the slot, and the top surface of the spiral plate is inclined from the outside to the inside, and a triangular plate is installed between the two ends of the spiral plate and the bottom wall of the receiving bucket.

[0016] By means of the above technical solution, the present invention provides an enzyme-assisted pine needle flavonoid extraction device, which has at least the following beneficial effects:

[0017] 1. The present invention disperses pine needle powder to different areas at different depths in the water body to achieve all-round delivery at multiple depths, thereby improving dispersibility, reducing single-point accumulation and floating phenomena, facilitating the flow and mixing of the extract, making the extraction more uniform and thorough, avoiding local unevenness and agglomeration problems, and making the extraction process more efficient and controllable.

[0018] 2. After the present invention allows the pine needle powder to slide into the inner cavity of the central shaft through the guide assembly, it can cooperate with a number of slide plates to divert the pine needle powder so that it is relatively evenly dispersed and introduced into a number of distribution assemblies at different heights.

[0019] 3. The present invention uses the coordinated application of the electric control valve 1 and the electric control valve 2. When the pine needle powder is introduced into the middle section of the cylindrical tube, the passage between the middle section and the tail section of the cylindrical tube is closed. In addition, before the pine needle powder is introduced into the tail section of the cylindrical tube, the passage between the front section and the middle section is closed, which can effectively prevent the subsequent extraction liquid from entering the inner cavity of the central shaft.

[0020] 4. The present invention utilizes the running drive motor to drive the entire dispersion mechanism to rotate, so that the extract in the extraction tank body flows along the water inlet trough to strongly impact the pine needle powder in the discharge pipe, while avoiding the accumulation of pine needle powder in the pipeline, further enhancing the dissolution efficiency and effect of the pine needle powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the cross-section structure of the extraction tank body of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the dispersion mechanism of the present invention;

[0025] Figure 4 It is a schematic diagram of the cross-section structure of the central shaft of the present invention;

[0026] Figure 5 It is a schematic diagram of the installation structure of the cylindrical tube and the stirring structure of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the dispensing assembly of the present invention;

[0028] Figure 7 It is a schematic structural diagram of the guide assembly of the present invention.

[0029] In the figure:

[0030] 1. Extraction tank;

[0031] 2. Enzyme supply assembly; 201. Auxiliary tank; 202. Suction pump; 203. Delivery pipeline;

[0032] 3. Feeding pipe;

[0033] 4. Dispersing mechanism; 401. Central axis; 4011. Notch; 4012. Disturbing plate; 4013. Slide plate; 402. Guide assembly; 4021. Receiving bucket; 4022. Spiral plate; 4023. Triangular plate; 403. Dispensing assembly; 4031. Cylindrical tube; 4032. Electric control valve 1; 4033. Electric control valve 2; 4034. Water inlet trough; 4035. Water outlet trough; 404. Stirring structure;

[0034] 5. Drive motor. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0036] Embodiment 1

[0037] For the extraction of pine needle flavonoids, under normal circumstances, the pine needle powder is directly put into the extractor, and the put pine needle powder is concentrated on the surface of the extract, which makes it difficult for the pine needle powder to fully contact the extract in the initial stage, affecting the dissolution and extraction efficiency of the active ingredients. Figure 1-Figure 7This embodiment proposes an enzyme-assisted pine needle flavonoid extraction device, which can make the pine needle powder fully contact with the extracting solution and ensure the completeness of the release of effective substances. In the device, the enzyme supply component 2 is installed on the outside of the extraction tank body 1, and is used to put the enzyme solution into the extraction tank body 1. The extraction tank body 1 is fixedly plugged with a feeding pipe 3, and a set amount of pine needle powder is put into the extraction tank body 1 by using a feeding device external to the feeding pipe 3. A dispersion mechanism 4 is provided inside the extraction tank body 1 for dispersing the pine needle powder introduced by the feeding pipe 3 to different height positions. The top of the extraction tank body 1 is installed with a driving motor 5, which drives the dispersion mechanism 4 to rotate so that the pine needle powder put at different height positions is arranged in a circumferentially scattered shape. In actual application, a set amount of extracting liquid is put in through the inlet of the extraction tank body 1. The extracting liquid is usually water, ethanol or water-ethanol solution, etc. Then, a set amount of pine needle powder is put into the extraction tank body 1 by connecting the feeding pipe 3 to the pine needle powder supply mechanism according to a certain ratio, and the driving motor 5 is operated in coordination to control the dispersion mechanism 4 to keep rotating at a constant speed, so that the pine needle powder and the extracting liquid are evenly mixed. After the set time, the enzyme supply component 2 is operated in coordination to put an appropriate amount of enzyme into the extraction tank body 1, and the driving motor 5 is continuously operated to control the dispersion mechanism 4 to continue rotating to ensure that the enzyme is evenly distributed in the mixed liquid of the pine needle powder and the extracting liquid, thereby improving the uniformity of the contact between the enzyme and the pine needle powder and improving the release efficiency of the flavonoids in the pine needle powder.

[0038] In accordance with the above, the dispersing mechanism 4 includes a central axis rod 401 that is transmission-connected to the driving motor 5 and a guide assembly 402 that is fixedly sleeved on the outer surface of the central axis rod 401. The central axis rod 401 is provided with a cavity inside. The guide assembly 402 is used to guide the pine needle powder introduced by the feeding pipe 3 to enter the cavity for dispersion. A plurality of dispensing assemblies 403 for dispersing and exporting the pine needle powder in the cavity at different heights are installed on the outer surface of the central axis rod 401, and the plurality of dispensing assemblies 403 are arranged in an up-down staggered manner. When the pine needle powder is put into the extraction tank body 1 through the feeding pipe 3, the pine needle powder first enters the space inside the guide assembly 402, and then is guided into the cavity of the central axis rod 401, and finally is dispersed to a plurality of dispensing assemblies 403 arranged up and down to be put in multiple positions, so that the put pine needle powder is distributed at multiple points at different depths in the extracting liquid in the extraction tank body 1. While the pine needle powder is being dosed, the driving motor 5 is operated in coordination to control the dispersion mechanism 4 to maintain a uniform rotation as a whole, and as the plurality of sub-dispensing components 403 follow the axial rotation operation with the central axis rod 401 as the center, the pine needle powder derived from the multi-component dispensing components 403 is finally dispensed 360° in all directions at multiple depth positions in the extracting liquid in the extraction tank 1, effectively improving the uniformity and dispersion of the dispensing, and preventing the pine needle powder from agglomerating and affecting the dissolution. In addition, by directly dispersing the pine needle powder into the extracting liquid and dispensing it, the problem of it floating on the surface of the extracting liquid can be effectively avoided.

[0039] Embodiment 2

[0040] In order to effectively disperse the pine needle powder introduced into the guide assembly 402 into the plurality of dispensing assemblies 403, as shown in FIG. Figure 2-Figure 6 As shown, a notch 4011 is provided on the outer surface of the central shaft 401 for interconnecting the cavity and the interior of the guide assembly 402, and the bottom wall of the notch 4011 is inclined downward from the outside to the inside, and a plurality of staggered spoiler plates 4012 are installed on the inner wall of the central shaft 401, and the spoiler plates 4012 are located below the notch 4011. The inner wall of the central shaft 401 is also installed with a plurality of slide plates 4013 for introducing the dispersed pine needle powder in the inner cavity of the central shaft 401 into a plurality of dispensing assemblies 403 in multiple strands. The notch 4011 is provided so that the pine needle powder introduced into the guide assembly 402 can enter the cavity in the central shaft 401, and in the upper section entering the cavity, the pine needle powder falling downward is dispersed multiple times through the spoiler plates 4012, and finally dispersed and falls downward more evenly. Furthermore, since the plurality of dispensing components 403 are arranged in an up-down staggered manner, all the slide plates 4013 except the bottom group of slide plates 4013 are also arranged in an up-down staggered manner, thereby ensuring that pine needle powder falls from the plurality of slide plates 4013 .

[0041] Specifically, the bottom set of slide plates 4013 is arranged in an inclined circular plate shape, and is in contact with the inner wall of the central axis rod 401, and the remaining slide plates 4013 are arranged in an inclined U-shaped plate shape, and their width is smaller than the inner diameter of the central axis rod 401. The inclined slide plates 4013 facilitate the complete transfer of the pine needle powder dropped on the slide plates 4013 to the inside of the dispensing assembly 403, and the shape of the bottom set of slide plates 4013 is used to collect the pine needle powder not transferred by the upper U-shaped slide plates 4013.

[0042] Embodiment 3

[0043] Following the above-mentioned embodiment 1 and embodiment 2, in order to effectively prevent the pine needle powder from entering the dispensing assembly 403, the extract enters the inner cavity of the central shaft 401 during discharge. Figure 5-Figure 7As shown, the dispensing assembly 403 includes a cylindrical tube 4031 installed on the surface of the central axis rod 401 for receiving the pine needle powder slidably transferred from the slide plate 4013, and an electric control valve 1 4032 and an electric control valve 2 4033 are installed on the cylindrical tube 4031, which are arranged up and down. The cylindrical tube 4031 consists of a feed pipe, a storage pipe connected to the bottom of the feed pipe, and a discharge pipe connected to the tail end of the storage pipe, and the inclination angle of the feed pipe is consistent with the inclination angle of the slide plate 4013. The electric control valve 1 4032 and the electric control valve 2 4033 are respectively installed in the middle section of the feed pipe and the tail section of the storage pipe, and the inclination angle of the discharge pipe is between 15° and 30°. The pine needle powder transferred to the dispensing assembly 403 via the slide plate 4013 first falls into the feed pipe in the cylindrical tube 4031. At this time, the electric control valve 1 4032 is in an open state, while the electric control valve 2 4033 is in a closed state, so that the pine needle powder falls into the storage tube. Subsequently, a signal to close the electric control valve 1 4032 is given to cut off the passage between the feed pipe and the storage pipe to prevent the subsequent extract from entering the range of the feed pipe and the inner cavity of the central shaft 401. After that, a signal to open the electric control valve 2 4033 is given to make the storage pipe and the discharge pipe unblocked, so that the pine needle powder temporarily stored in the storage pipe can slide into the inclined discharge pipe.

[0044] Embodiment 4

[0045] like Figure 3 , Figure 6-Figure 7 As shown, the several water inlet grooves 4034 opened on the discharge pipe are used to make the water inside the extraction tank body 1 impact and disperse to the pine needle powder inside the discharge pipe when the driving motor 5 drives the central shaft rod 401 and the cylindrical tube 4031 to rotate. The several water outlet grooves 4035 opened at the bottom of the discharge pipe are used to discharge the mixed liquid of the pine needle powder and the water body, and the angle between the extension lines of the water outlet grooves 4035 and the water inlet grooves 4034 to the center line of the discharge pipe is greater than 90°, which is more convenient for the extraction liquid entering the discharge pipe to be discharged in equal amounts. The outer surface of the central shaft rod 401 is installed with several stirring structures 404 arranged up and down, and the stirring structure 404 is composed of three stirring blades arranged equidistantly in a ring shape, and the discharge pipe is embedded in the middle of one of the stirring blades. When the electric control valve 1 4032 is closed and the electric control valve 2 4033 is opened, so that the pine needle powder in the storage tube slides into the inner cavity of the discharge tube, the operation of the driving motor 5 drives the entire dispersion mechanism 4 to rotate at a uniform speed, so that the extract inside the extraction tank 1 impacts the pine needle powder in the inner cavity of the discharge tube along the several water inlet grooves 4034, and because the inner diameter of the water inlet grooves 4034 gradually decreases from the outside to the inside, it can effectively increase the impact force of the extract entering the discharge tube, avoid the pine needle powder from agglomerating or clogging in the discharge tube, and improve its miscibility with the extract. In addition, with the water outlet grooves 4035 whose inner diameter gradually increases from the outside to the inside, the extract containing pine needle powder in the discharge tube is discharged downward as the entire dispersion mechanism 4 rotates, and at the same time, Figure 6As shown, the stirring blades embedded in the discharge pipe have a part located below the discharge pipe. Therefore, at the moment when the pine needle powder and extract are discharged from the discharge pipe, the rotating stirring blades can be used to stir them, thereby optimizing the dissolution efficiency of the pine needle powder.

[0046] Embodiment 5

[0047] In the pine needle flavonoid extraction stage, after the pine needle powder and the extract are evenly mixed, the enzyme solution needs to be added to the mixed liquid. In order to ensure the uniformity of the enzyme solution addition, Figure 6 As shown, the enzyme supply assembly 2 includes an auxiliary tank 201 installed on the side of the extraction tank body 1, a suction pump 202 for extracting the internal enzyme solution is installed on the top of the auxiliary tank 201, and a delivery pipeline 203 extending downward along the top of the extraction tank body 1 to the inside of the guide assembly 402 is connected to the output end of the suction pump 202. By running the suction pump 202, the enzyme solution stored in the auxiliary tank 201 can be extracted into the inside of the guide assembly 402 along the delivery pipeline 203, and its enzyme solution preferably uses pectinase or cellulase to degrade plant fibers and enhance the penetration effect of organic solvents. Afterwards, the same path is dispersed into several sub-assemblies 403 when the pine needle powder is put in, and finally dispersed and put into different depths in the mixed liquid of pine needle powder and extract more evenly.

[0048] Embodiment 6

[0049] In order to ensure that the pine needle powder can be accurately introduced into the inner cavity along the notch 4011 on the central shaft 401 during the operation of the driving motor 5, as shown in FIG. Figure 7 As shown, the guide assembly 402 includes a receiving bucket 4021 installed on the outer surface of the central axis 401, and a spiral plate 4022 is installed on the inner wall of the receiving bucket 4021 for guiding the pine needle powder to spirally slide into the slot 4011, and the top surface of the spiral plate 4022 surrounding the outer part of the slot 4011 is higher than the height position of the bottom wall of the slot 4011, and a triangular plate 4023 is installed between the two ends of the spiral plate 4022 and the bottom wall of the receiving bucket 4021. The pine needle powder that enters the range of the guide assembly 402, no matter where it falls on the top surface of the spiral plate 4022, can slide down along its spirally inclined top surface and finally slide to the vicinity of the slot 4011, and because the top surface of the spiral plate 4022 is inclined from the outside to the inside, it is ensured that the pine needle powder at the lowest point of the top surface of the spiral plate 4022 finally slides smoothly along the slot 4011 into the inner cavity of the central axis 401.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An enzyme-assisted pine needle flavonoid extraction device, comprising an enzyme supply component (2) for feeding an enzyme solution into an extraction tank (1), characterized in that: The extraction tank body (1) is fixedly plugged with a feeding pipe (3) for feeding pine needle powder, and a dispersion mechanism (4) for dispersing the pine needle powder introduced by the feeding pipe (3) to different height positions is arranged inside the extraction tank body (1). A driving motor (5) is installed on the top of the extraction tank body (1) so that the pine needle powder fed to different height positions is arranged in a circumferentially scattered shape when the dispersion mechanism (4) is driven to rotate; The dispersion mechanism (4) comprises a central axis rod (401) transmission-connected to a driving motor (5) and a guide assembly (402) fixedly sleeved on the outer surface of the central axis rod (401); a cavity is provided inside the central axis rod (401); the guide assembly (402) is used to guide the pine needle powder introduced by the feeding pipe (3) into the cavity for dispersion; a plurality of distribution assemblies (403) for dispersing and guiding the pine needle powder in the cavity at different heights are installed on the outer surface of the central axis rod (401); and the plurality of distribution assemblies (403) are arranged in an up-and-down staggered manner.

2. The enzyme-assisted pine needle flavonoid extraction device according to claim 1, characterized in that: The outer surface of the central axis rod (401) is provided with a notch (4011) for interconnecting the cavity and the interior of the guide assembly (402), and the bottom wall of the notch (4011) is inclined downward from the outside to the inside, and a plurality of staggered spoiler plates (4012) are installed on the inner wall of the central axis rod (401), and the spoiler plates (4012) are located below the notch (4011).

3. The enzyme-assisted pine needle flavonoid extraction device according to claim 1, characterized in that: The inner wall of the central shaft (401) is also provided with a plurality of slide plates (4013) for guiding the dispersed pine needle powder in the inner cavity of the central shaft (401) into a plurality of dispensing components (403) in the form of multiple strands; The bottom group of slide plates (4013) are arranged in an inclined circular plate shape and fit the inner wall of the central axis rod (401), and the remaining slide plates (4013) are arranged in an inclined U-shaped plate shape, and their width is smaller than the inner diameter of the central axis rod (401).

4. The enzyme-assisted pine needle flavonoid extraction device according to claim 1, characterized in that: The dispensing assembly (403) comprises a cylindrical tube (4031) mounted on the surface of the central shaft (401) for receiving pine needle powder slidably transferred from the slide plate (4013), and an electric control valve 1 (4032) and an electric control valve 2 (4033) arranged up and down are mounted on the cylindrical tube (4031); The cylindrical tube (4031) consists of a feed pipe, a storage tube connected to the bottom of the feed pipe, and a discharge pipe connected to the tail end of the storage tube, and the inclination angle of the feed pipe is consistent with the inclination angle of the slide plate (4013). The electric control valve 1 (4032) and the electric control valve 2 (4033) are respectively installed in the middle section of the feed pipe and the tail section of the storage tube, and the inclination angle of the discharge pipe is between 15° and 30°.

5. The enzyme-assisted pine needle flavonoid extraction device according to claim 4, characterized in that: The discharge pipe is provided with a plurality of water inlet grooves (4034) for causing the water in the extraction tank (1) to impact and disperse into the pine needle powder in the discharge pipe when the driving motor (5) drives the central shaft rod (401) and the cylindrical tube (4031) to rotate. The bottom of the discharge pipe is provided with a plurality of water outlet grooves (4035) for discharging a mixed liquid of the pine needle powder and the water.

6. The enzyme-assisted pine needle flavonoid extraction device according to claim 5, characterized in that: The inner diameter of the water inlet trough (4034) gradually decreases from the outside to the inside, the inner diameter of the water outlet trough (4035) gradually increases from the outside to the inside, and the angle between the extension line between the water outlet trough (4035), the water inlet trough (4034) and the center line of the discharge pipe is greater than 90°; The outer surface of the central shaft (401) is provided with a plurality of stirring structures (404) arranged up and down. The stirring structure (404) is composed of three stirring blades arranged equidistantly in a ring shape, and the discharge pipe is embedded in the middle of one of the stirring blades.

7. The enzyme-assisted pine needle flavonoid extraction device according to claim 1, characterized in that: The enzyme supply assembly (2) comprises an auxiliary tank (201) installed on the side of the extraction tank body (1), a suction pump (202) for extracting the internal enzyme solution is installed on the top of the auxiliary tank (201), and a delivery pipeline (203) extending downward along the top of the extraction tank body (1) to the inside of the guide assembly (402) is connected to the output end of the suction pump (202).

8. The enzyme-assisted pine needle flavonoid extraction device according to claim 7, characterized in that: The guide assembly (402) comprises a receiving bucket (4021) mounted on the outer surface of the central shaft (401), a spiral plate (4022) for guiding the pine needle powder to spirally slide into the slot (4011) is mounted on the inner wall of the receiving bucket (4021), and the top surface of the spiral plate (4022) surrounding the outer portion of the slot (4011) is higher than the height position of the bottom wall of the slot (4011), the top surface of the spiral plate (4022) is inclined from the outside to the inside, and a triangular plate (4023) is mounted between the two ends of the spiral plate (4022) and the bottom wall of the receiving bucket (4021).

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