Hangzhou white chrysanthemum general flavone extraction device and extraction method

Abstract

The invention relates to the field of plant extraction, in particular to a Hangzhou white chrysanthemum general flavone extraction device and method. A chrysanthemum morifolium total flavone extraction device comprises a supporting frame, an extraction barrel and the like. The supporting frame is fixedly connected with an extraction barrel, and a temperature sensor is arranged in the extraction barrel. The heating disc dries the Hangzhou white chrysanthemums falling onto the drying box through the guide hopper, the Hangzhou white chrysanthemums are cut and crushed through the cutting blade when the stirring rod rotates, the Hangzhou white chrysanthemums are conveniently dried in the drying box, the extraction efficiency is improved through crushing, and the temperature of the heating disc is adjusted, so that an ethanol solution reaches the optimal extraction temperature, and the extraction rate is guaranteed; meanwhile, the heating disc is used for drying the Hangzhou white chrysanthemum, the effect of saving energy is achieved, drying, crushing and extracting of the Hangzhou white chrysanthemum are all carried out in the same equipment, manual operation transfer is not needed, the working efficiency is improved, meanwhile, manpower is saved, and the occupied area of the equipment is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of plant extraction, and in particular to an extraction device and method for total flavonoids from Hangzhou white chrysanthemum. Background Technology

[0002] In existing technologies, the extraction of total flavonoids from Hangzhou white chrysanthemum requires multiple operational steps. These include drying and pulverizing the chrysanthemum to increase extraction efficiency, and mixing the chrysanthemum powder with an ethanol solution for extraction. In research laboratories, this requires multiple manual transfers of the chrysanthemum, and each step requires different equipment. This equipment is bulky, inconvenient, and wastes a lot of time, resulting in low efficiency and high manpower consumption. It cannot effectively meet the extraction requirements of total flavonoids from Hangzhou white chrysanthemum in scientific research experiments. Summary of the Invention

[0003] To overcome the shortcomings of traditional scientific research laboratories, which require multiple manual transfers of Hangzhou white chrysanthemum and different equipment for each step, resulting in low efficiency and high manpower consumption, and failing to effectively meet the extraction requirements of total flavonoids from Hangzhou white chrysanthemum during scientific research experiments, this invention provides a device and method for extracting total flavonoids from Hangzhou white chrysanthemum.

[0004] The technical solution of this invention is as follows: a device for extracting total flavonoids from Hangzhou white chrysanthemum, comprising a support frame and an extraction barrel; the extraction barrel is fixedly connected to the support frame, and a temperature sensor is installed inside the extraction barrel; it also includes a valve, a stirring rod, a drain valve, a concave ring, a feed pipe, a connecting pipe, a heating plate, a drying box, a feed hopper, an air duct, and cutting blades; the extraction barrel is rotatably connected to the stirring rod, which is provided with several stirring blades; the extraction barrel is connected to the drain valve; a heating plate is installed on the extraction barrel; a concave ring is connected to the outer ring surface of the heating plate; a drying box is connected to the heating plate, and the bottom of the drying box is made of a heat-conducting material; a feed hopper is connected to the drying box; several air ducts are connected to the feed hopper; the stirring rod extends through the end of the heating plate into the feed hopper; several cutting blades are provided on the part of the stirring rod located inside the feed hopper, and several other cutting blades are also provided on the inner wall of the feed hopper; the drying box is connected to the connecting pipe; the connecting pipe is connected to the concave ring; the concave ring is connected to the feed pipe; the feed pipe is connected to the extraction barrel; and a valve is installed on the extraction barrel.

[0005] As a further preferred option, a steam vent valve is also included; the drying box is equipped with a steam vent valve, which is used to discharge the water vapor generated during drying.

[0006] As a further preferred embodiment, it also includes an installation cylinder; the installation cylinder is fixedly connected inside the heating plate; the installation cylinder is movably connected to the stirring rod, and the installation cylinder, the stirring rod, and the stirring blade are all made of heat-conducting material.

[0007] As a further preferred embodiment, it also includes a sealing sleeve, a discharge valve, and a sealing valve; a spiral groove is provided on the extraction barrel; a sealing sleeve is provided on the outside of the extraction barrel; the sealing sleeve is fixedly connected to the support frame; several discharge valves are provided on the inner wall of the spiral groove of the extraction barrel; the guide pipe is not directly connected to the extraction barrel but is connected to the spiral groove.

[0008] As a further preferred option, an electrically operated sealing plate is also included; two mutually symmetrical electrically operated sealing plates are provided on the guide hopper to seal the opening of the guide hopper.

[0009] As a further preferred embodiment, it also includes a mounting column, a ball seat, a crushing ball, an arc-shaped mesh, and a friction ring; a convex strip is provided in the middle of the stirring rod, and the mounting column is slidably connected to the middle of the stirring rod; the mounting column is rotatably connected to the ball seat; the ball seat is movably connected to the crushing ball; the crushing ball contacts the inner ring surface of the drying box, and the inner ring surface of the drying box is set as an arc shape to cooperate with the crushing ball; an arc-shaped mesh is provided at the opening where the connecting pipe communicates with the drying box; a friction ring is fixedly connected to the drying box; the friction ring contacts the ball seat.

[0010] As a further preferred embodiment, it also includes an internal gear ring, a gear, and a crushing roller; the internal gear ring is fixedly connected to the ball seat; the crushing roller is rotatably connected to the mounting column; the gear is fixedly connected to the shaft of the crushing roller; the gear meshes with the internal gear ring; and the bottom surface of the drying box is provided with several crushing teeth that cooperate with the crushing roller.

[0011] As a further preferred embodiment, it also includes an annular screen; the annular screen is fixed to the bottom surface of the drying box; the crushing roller is located inside the annular screen; the mesh diameter of the annular screen is larger than that of the arc-shaped screen.

[0012] As a further preferred embodiment, it also includes an electric push rod and a fixing plate; the extraction tank is fixedly connected to the electric push rod; the telescopic end of the electric push rod is fixedly connected to the fixing plate; the fixing plate is rotatably connected to the stirring rod; a DD motor for driving the stirring rod to rotate is installed on the fixing plate; a splined shaft is provided at the connection between the stirring rod and the extraction tank, and the splined shaft is connected to the extraction tank through a bushing; a heat insulation part is provided on the stirring rod; the heat insulation part is located above the mounting cylinder.

[0013] As a further preferred embodiment, an extraction method for extracting total flavonoids from Hangzhou white chrysanthemum is also included, comprising the following steps: Step 1, crushing, in which the Hangzhou white chrysanthemum is crushed using a cutting blade and dried using a heating plate and a drying box; Step 2, heating, in which the heat from the heating plate is used to heat the ethanol solution in the extraction tank via a stirring rod; Step 3, extraction, in which the heat conducted from the mounting cylinder to the stirring rod is adjusted to maintain the ethanol solution at the optimal temperature required for extraction.

[0014] This invention has the following advantages: 1. The heating plate dries the Hangzhou white chrysanthemum that falls onto the drying box through the guide hopper. When the stirring rod rotates, the cutting blade cuts and crushes the Hangzhou white chrysanthemum, making it easier for the chrysanthemum to dry in the drying box. Crushing also increases the extraction efficiency. By adjusting the temperature of the heating plate, the ethanol solution reaches the optimal extraction temperature to ensure the extraction rate. At the same time, using the heating plate to dry the Hangzhou white chrysanthemum achieves the effect of saving energy. The drying, crushing and extraction of Hangzhou white chrysanthemum are all carried out in the same equipment without the need for manual operation and transfer, which improves work efficiency, saves manpower, and greatly reduces the equipment footprint, effectively meeting the total flavonoid extraction needs of Hangzhou white chrysanthemum in scientific research experiments.

[0015] 2. The air flowing through the drying box and the outer ring of the heating plate is heated by the heat. After being introduced into the spiral groove through the guide pipe, the heated air heats the ethanol solution in the extraction tank. This can shorten the time for the ethanol solution to be heated to the optimal temperature required for extraction, improve efficiency, and make full use of the heat generated by the heating plate.

[0016] 3. The crushing roller and the crushing teeth on the bottom of the drying box work together to crush the Hangzhou white chrysanthemum after it has been cut and broken by the cutting blade, which improves the drying efficiency and the subsequent extraction rate. The crushing ball that moves with the ball seat further crushes the Hangzhou white chrysanthemum, thereby further improving the subsequent extraction rate. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the extraction barrel of the present invention; Figure 3 This is a three-dimensional structural diagram of the mounting column, ball seat, and crushing ball assembly of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the internal gear ring, gear and crushing roller combination of the present invention; Figure 5 This is a three-dimensional structural diagram of the mounting column, gear, and crushing roller assembly of the present invention; Figure 6 This is a schematic diagram of the internal structure of the drying box of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the annular screen of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the crushing roller of the present invention; Figure 9 This is a schematic diagram of the three-dimensional structure of the arc-shaped mesh and ribbon combination of the present invention; Figure 10 This is a schematic diagram of the internal structure of the concave ring of the present invention; Figure 11 This is a schematic diagram of the three-dimensional structure of the annular opening baffle of the present invention.

[0018] The components are as follows: 1-Support frame, 2-Extraction bucket, 201-Sealing sleeve, 202-Spiral groove, 203-Valve, 204-Discharge valve, 3-Stirring rod, 301-Heat insulation part, 4-Drain valve, 5-Concave ring, 501-Guide pipe, 502-Annular open baffle, 6-Connecting pipe, 601-Sealing valve, 602-Arc mesh, 603-Ribbon, 7-Heating plate, 8-Drying box, 801-Exhaust valve, 802-Friction ring, 9-Guide hopper, 901-Electric sealing plate, 10-Air guide pipe, 11-Cutting blade, 12-Installation cylinder, 13-Installation column, 14-Spherical seat, 15-Crushing ball, 16-Internal gear ring, 17-Gear, 18-Crushing roller, 1801-Brush bristles, 19-Electric push rod, 20-Fixing plate, 21-Annular screen. Detailed Implementation

[0019] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0020] Example 1 A device for extracting total flavonoids from Hangzhou white chrysanthemum, based on Figures 1-3 and Figure 6 , Figure 10 and Figure 11 As shown, it includes a support frame 1 and an extraction bucket 2; the support frame 1 is fixed to the extraction bucket 2, and a temperature sensor is installed inside the extraction bucket 2; It also includes a valve 203, a stirring rod 3, a drain valve 4, a concave ring 5, a feed pipe 501, a connecting pipe 6, a heating plate 7, a drying box 8, a feed hopper 9, an air duct 10, and a cutting blade 11; the extraction tank 2 is rotatably connected to the stirring rod 3, which is equipped with several stirring blades; the bottom of the extraction tank 2 is connected to the drain valve 4; the extraction tank 2 is equipped with a heating plate 7; the outer ring of the heating plate 7 is connected to a concave ring 5; the heating plate 7 is connected to the drying box 8, the bottom of the drying box 8 is made of heat-conducting material; the drying box 8 is connected to a heat-conducting pipe... The hopper 9 is connected to several inclined air guide pipes 10; the stirring rod 3 extends through the end of the heating plate 7 into the hopper 9; the part of the stirring rod 3 located inside the hopper 9 is provided with several annular array cutting blades 11, and the inner wall of the hopper 9 is also provided with several other annular array cutting blades 11; the drying box 8 is connected to the connecting pipe 6; the connecting pipe 6 is connected to the concave ring 5; the concave ring 5 is connected to the guide pipe 501; the guide pipe 501 is connected to the extraction tank 2; the extraction tank 2 is provided with a valve 203.

[0021] It also includes a steam vent valve 801; the drying box 8 is equipped with a steam vent valve 801.

[0022] The exhaust valve 801 is equipped with a filter cloth to prevent the crushed material from flying out.

[0023] It also includes an installation cylinder 12; the installation cylinder 12 is fixedly connected inside the heating plate 7; the installation cylinder 12 is movably connected to the stirring rod 3, and the installation cylinder 12, the stirring rod 3 and the stirring blade are all made of heat-conducting material.

[0024] It also includes an annular opening baffle 502; the annular opening baffle 502 is provided inside the concave ring 5, and the opening of the annular opening baffle 502 is directly opposite to the connection point between the connecting pipe 6 and the concave ring 5.

[0025] In use, valve 203 is opened, and a specified amount of ethanol solution of a preset concentration is added to extraction tank 2 through valve 203. Then, a preset amount of Hangzhou white chrysanthemum is poured into the feed hopper 9. Simultaneously, the external drive device rotates the stirring rod 3, the heating plate 7 is activated, and the exhaust valve 801 is opened. The heating plate 7 dries the Hangzhou white chrysanthemum that falls through the feed hopper 9 onto the drying box 8. As the stirring rod 3 rotates, the cutting blade 11 cuts and crushes the Hangzhou white chrysanthemum, facilitating drying within the drying box 8 and increasing extraction efficiency through crushing. At the same time, the heating plate 7... The mounting cylinder 12 transfers heat to the stirring rod 3, which, along with the stirring blades, heats the ethanol solution in the extraction tank 2. A temperature sensor inside the extraction tank 2 monitors the ethanol solution temperature, and the temperature of the heating plate 7 is adjusted to achieve the optimal extraction temperature, ensuring a high extraction rate. Simultaneously, the heating plate 7 dries the Hangzhou white chrysanthemum, achieving energy savings. After the Hangzhou white chrysanthemum in the drying box 8 is dried, the exhaust valve 801 is closed, and an external air pump connected to the air duct 10 blows air into the drying box 8 through the guide hopper 9, further drying the crushed chrysanthemum. The Hangzhou white chrysanthemum is introduced into the concave ring 5 through the connecting pipe 6. The annular open baffle 502 guides the chrysanthemum, bringing it closer to the outer ring of the heating plate 7 and allowing it to move with the airflow, thus enhancing the drying effect. Simultaneously, the air gap formed between the annular open baffle 502 and the outer wall of the concave ring 5 reduces heat loss from the outer ring of the heating plate 7, allowing the heat from the outer ring of the heating plate 7 to further dry the chrysanthemum and ensure the drying effect. Then, the crushed and dried chrysanthemum is introduced into the ethanol solution in the extraction tank 2 through the feed pipe 501, and held in place by the stirring rod 3. Extraction is carried out by stirring. The stirring rod 3 is used to make the temperature of the ethanol solution uniform and to disperse the crushed and dried Hangzhou white chrysanthemum in the ethanol solution, ensuring the total flavonoid extraction rate. After extraction, the drain valve 4 is opened to drain the extract and residue, and then the extract and residue are separated and concentrated to obtain crude total flavonoids. Thus, the drying, crushing and extraction of Hangzhou white chrysanthemum are all carried out in the same equipment without manual operation and transfer, which improves work efficiency, saves manpower, reduces the equipment footprint, and greatly improves the portability of the equipment, effectively meeting the total flavonoid extraction needs of Hangzhou white chrysanthemum in scientific research experiments.

[0026] Example 2 Based on Example 1, such as Figures 1-11 As shown, It also includes a sealing sleeve 201, a discharge valve 204 and a sealing valve 601; a spiral groove 202 is provided on the extraction barrel 2; a sealing sleeve 201 is provided on the outside of the extraction barrel 2; the sealing sleeve 201 is fixedly connected to the support frame 1; a number of discharge valves 204 are provided on the inner wall of the spiral groove 202 of the extraction barrel 2; the guide pipe 501 is not directly connected to the extraction barrel 2 but is connected to the spiral groove 202.

[0027] It also includes an electric sealing plate 901; two symmetrical electric sealing plates 901 are provided on the guide hopper 9.

[0028] It also includes a mounting column 13, a ball seat 14, a crushing ball 15, an arc-shaped mesh 602, and a friction ring 802; a protruding strip is provided in the middle of the stirring rod 3, and the mounting column 13 is slidably connected to the middle of the stirring rod 3; the mounting column 13 is rotatably connected to the ball seat 14; the ball seat 14 is movably connected to the crushing ball 15; the crushing ball 15 contacts the inner ring surface of the drying box 8, and the inner ring surface of the drying box 8 is set as an arc shape to cooperate with the crushing ball 15; an arc-shaped mesh 602 is provided at the opening where the connecting pipe 6 communicates with the drying box 8; the friction ring 802 is fixedly connected to the drying box 8; the friction ring 802 contacts the ball seat 14.

[0029] It also includes ribbons 603; several ribbons 603 are set on the arc-shaped net 602.

[0030] It also includes an internal gear ring 16, a gear 17 and a crushing roller 18; the ball seat 14 is fixedly connected to the internal gear ring 16; the mounting column 13 is rotatably connected to the crushing roller 18; the shaft of the crushing roller 18 is fixedly connected to the gear 17; the gear 17 meshes with the internal gear ring 16; the bottom surface of the drying box 8 is provided with a number of annular arrays of crushing teeth that cooperate with the crushing roller 18.

[0031] It also includes an annular screen 21; the bottom surface of the drying box 8 is fixedly connected to the annular screen 21; the crushing roller 18 is located inside the annular screen 21; the mesh diameter of the annular screen 21 is larger than the mesh diameter of the arc-shaped screen 602.

[0032] The annular screen 21 is configured as an elastic structure, with several convex balls on the inner ring surface of the annular screen 21, and a convex ring for cooperation is provided at the end of the crushing roller 18.

[0033] The end of the crushing roller 18 is provided with bristles 1801 that contact the annular screen 21.

[0034] It also includes an electric push rod 19 and a fixing plate 20; the electric push rod 19 is fixedly connected to the bottom of the extraction tank 2; the extension end of the electric push rod 19 is fixedly connected to the fixing plate 20; the fixing plate 20 is rotatably connected to the stirring rod 3; a DD motor for driving the stirring rod 3 to rotate is installed on the fixing plate 20; a spline shaft is provided at the connection between the stirring rod 3 and the extraction tank 2, and the spline shaft is connected to the extraction tank 2 through a bushing; a heat insulation part 301 is provided on the stirring rod 3; the heat insulation part 301 is located above the mounting cylinder 12.

[0035] It also includes an extraction method suitable for extracting total flavonoids from Hangzhou white chrysanthemum, comprising the following steps: Step 1: Crushing. The Hangzhou white chrysanthemum is crushed by the cutting blade 11 and dried by the heating plate 7 and the drying box 8. Step 2, heating: The heat from the heating plate 7 is used to heat the ethanol solution in the extraction tank 2 via the stirring rod 3; Step 3: Extraction. Adjust the heat conducted from the mounting cylinder 12 to the stirring rod 3 to maintain the ethanol solution at the optimal extraction temperature.

[0036] Since the drying temperature required for Hangzhou white chrysanthemum is much higher than the temperature required for ethanol extraction, in order to ensure both the drying efficiency of Hangzhou white chrysanthemum and the maintenance of the optimal temperature for ethanol extraction, the heating plate 7 transfers heat to the stirring rod 3 through the mounting cylinder 12 to heat the ethanol solution to the optimal extraction temperature. Then, by controlling the extension of the electric push rod 19, the fixed plate 20 moves the stirring rod 3 downwards, allowing the heat insulation part 301 to enter the mounting cylinder 12 at a preset length. This reduces the heat conducted from the mounting cylinder 12 to the stirring rod 3, thus maintaining the ethanol solution at the optimal extraction temperature. When the air pump connected to the external air duct 10 blows air into the drying box 8 through the guide hopper 9, the exhaust valve 801 is closed, and the two electric... The sealing plate 901 seals the opening of the feed hopper 9. The air flowing through is heated by the heat from the outer ring of the drying box 8 and the heating plate 7. After being introduced into the spiral groove 202 through the feed pipe 501, the heated air heats the ethanol solution in the extraction tank 2. This shortens the time required to heat the ethanol solution to the optimal extraction temperature, improves efficiency, and makes full use of the heat generated by the heating plate 7. After the dried and pulverized Hangzhou white chrysanthemum is blown into the spiral groove 202, all the discharge valves 204 are opened in sequence, allowing the Hangzhou white chrysanthemum to be dispersed into the extraction tank 2 through all the discharge valves 204. At the same time, hot air is ensured to flow through the entire spiral groove 202, so that the hot air can fully heat the ethanol solution.

[0037] While the stirring rod 3 rotates to stir the ethanol solution, an external air pump connected to the air duct 10 continuously blows air into the drying box 8 through the feed hopper 9. At this time, the sealing valve 601 is in the closed state. The stirring rod 3 drives the mounting column 13 to rotate through the central protrusion, causing the ball seat 14 to move in a circular motion against the friction ring 802 while rotating on the mounting column 13. In turn, the ball seat 14 drives the internal gear ring 16 to drive the transmission gear 17 to drive the crushing roller 18 to rotate. The crushing roller 18 cooperates with the crushing teeth on the bottom surface of the drying box 8 to crush the Hangzhou white chrysanthemum cut and broken by the cutting disc 11, thereby improving the drying efficiency and the subsequent extraction rate. The feed hopper 9 blows air into the drying box 8 to disperse the crushed Hangzhou white chrysanthemum, preventing it from accumulating in the middle of the bottom surface of the drying box 8. Simultaneously, the crushed Hangzhou white chrysanthemum, after being crushed by the crushing roller 18 and the crushing teeth on the bottom surface of the drying box 8, passes through the annular screen 21 and is blown to the inner annular surface of the drying box 8. Meanwhile, any incompletely crushed Hangzhou white chrysanthemum is intercepted by the annular screen 21 and continues to be crushed by the crushing roller 18, thus ensuring the crushing effect of the crushing roller 18. As the crushing roller 18 rotates, the convex ring at the end of the crushing roller 18 intermittently contacts and squeezes the convex balls on the annular screen 21, causing the annular screen 21 to vibrate. The Hangzhou white chrysanthemum fragments on screen 21 are shaken off, and simultaneously, the brush bristles 1801 on the crushing roller 18 clean the mesh of the annular screen 21 to prevent the fragments from clogging the mesh and ensure smooth operation. The crushing balls 15, which move with the ball seat 14, further crush the Hangzhou white chrysanthemum, thereby further improving the subsequent extraction rate. The arc-shaped mesh 602 intercepts the Hangzhou white chrysanthemum, preventing it from being directly blown into the connecting pipe 6 without being crushed by the crushing balls 15. When the air pump connected to the air duct 10 continuously blows air into the drying box 8 through the guide hopper 9, it agitates the ribbons 603 on the arc-shaped mesh 602. The irregular swaying of the ribbon 603 due to wind causes the arc-shaped mesh 602 to vibrate. Combined with the wind force, this causes the broken pieces of Hangzhou white chrysanthemum inside the mesh of the arc-shaped mesh 602 to be shaken off and blown away, thus preventing the mesh of the arc-shaped mesh 602 from being blocked during operation and ensuring smooth operation. After drying and pulverizing, the sealing valve 601 can be opened to discharge the material through the discharge valve 204. After discharge, in the subsequent extraction process, the sealing valve 601 can be closed to dry and pulverize the next batch of Hangzhou white chrysanthemum. This allows the drying, pulverizing and extraction of Hangzhou white chrysanthemum to be carried out simultaneously without affecting each other, improving the practicality of the device.

[0038] Those skilled in the art should understand that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A device for extracting total flavonoids from Hangzhou white chrysanthemum, comprising a support frame and an extraction tank; the extraction tank is fixedly connected to the support frame, and a temperature sensor is installed inside the extraction tank; characterized in that: It also includes valves, stirring rods, drain valves, concave rings, feed pipes, connecting pipes, heating plates, drying boxes, feed hoppers, air ducts, and cutting blades; the extraction tank is rotatably connected to a stirring rod with several stirring blades; the extraction tank is connected to a drain valve; a heating plate is installed on the extraction tank; a concave ring is connected to the outer ring of the heating plate; a drying box is connected to the heating plate, and the bottom of the drying box is made of heat-conducting material; a feed hopper is connected to the drying box; several air ducts are connected to the feed hopper; the stirring rod extends through the end of the heating plate into the feed hopper; several cutting blades are provided on the part of the stirring rod located inside the feed hopper, and several other cutting blades are also provided on the inner wall of the feed hopper; the drying box is connected to a connecting pipe; the connecting pipe is connected to the concave ring; the concave ring is connected to the feed pipe; the feed pipe is connected to the extraction tank; and a valve is installed on the extraction tank.

2. The device for extracting total flavonoids from Hangzhou white chrysanthemum according to claim 1, characterized in that: It also includes a steam vent valve; the drying box is equipped with a steam vent valve, which is used to discharge the water vapor generated during drying.

3. The device for extracting total flavonoids from Hangzhou white chrysanthemum according to claim 1, characterized in that: It also includes an installation cylinder; the installation cylinder is fixedly connected inside the heating plate; the installation cylinder is movably connected to the stirring rod, and the installation cylinder, stirring rod and stirring blade are all made of heat-conducting material.

4. The device for extracting total flavonoids from Hangzhou white chrysanthemum according to claim 1, characterized in that: It also includes a sealing sleeve, a discharge valve, and a sealing valve; the extraction barrel is provided with a spiral groove; a sealing sleeve is provided outside the extraction barrel; the sealing sleeve is fixedly connected to the support frame; several discharge valves are provided on the inner wall of the spiral groove of the extraction barrel; the guide pipe is not directly connected to the extraction barrel but is connected to the spiral groove.

5. The device for extracting total flavonoids from Hangzhou white chrysanthemum according to claim 4, characterized in that: It also includes an electric sealing plate; the guide hopper is equipped with two mutually symmetrical electric sealing plates, which seal the opening of the guide hopper.

6. The device for extracting total flavonoids from Hangzhou white chrysanthemum according to claim 1, characterized in that: It also includes a mounting column, a ball seat, a crushing ball, an arc-shaped mesh, and a friction ring; a convex strip is provided in the middle of the stirring rod, and the mounting column is slidably connected to the middle of the stirring rod; the mounting column is rotatably connected to the ball seat; the ball seat is movably connected to the crushing ball; the crushing ball contacts the inner ring surface of the drying box, and the inner ring surface of the drying box is set as an arc shape to match the crushing ball; an arc-shaped mesh is provided at the opening where the connecting pipe communicates with the drying box; The drying box is fixedly connected to a friction ring; the friction ring is in contact with the ball seat.

7. The device for extracting total flavonoids from Hangzhou white chrysanthemum according to claim 6, characterized in that: It also includes an internal gear ring, a gear, and a crushing roller; the internal gear ring is fixedly connected to the ball seat; the crushing roller is rotatably connected to the mounting column; the gear is fixedly connected to the shaft of the crushing roller; the gear meshes with the internal gear ring; and several crushing teeth that cooperate with the crushing roller are provided on the bottom surface of the drying box.

8. The device for extracting total flavonoids from Hangzhou white chrysanthemum according to claim 7, characterized in that: It also includes an annular screen; an annular screen is fixed to the bottom of the drying box; the crushing roller is located inside the annular screen; the mesh diameter of the annular screen is larger than that of the arc-shaped screen.

9. The device for extracting total flavonoids from Hangzhou white chrysanthemum according to claim 6, characterized in that: It also includes an electric push rod and a fixing plate; the extraction tank is fixedly connected to the electric push rod; the telescopic end of the electric push rod is fixedly connected to the fixing plate; the fixing plate is rotatably connected to the stirring rod; a DD motor for driving the stirring rod to rotate is installed on the fixing plate; a spline shaft is provided at the connection between the stirring rod and the extraction tank, and the spline shaft is connected to the extraction tank through a bushing; a heat insulation part is provided on the stirring rod; the heat insulation part is located above the mounting cylinder.

10. An extraction method applicable to the total flavonoid extraction of Hangzhou white chrysanthemum according to any one of claims 1-9, characterized in that: Includes the following steps: Step 1: Crushing. The Hangzhou white chrysanthemum is crushed using a cutting blade and then dried using a heating plate and drying box. Step 2: Heating. The heat from the heating plate is used to heat the ethanol solution in the extraction tank through the stirring rod. Step 3: Extraction. The heat conducted from the installation cylinder to the stirring rod is adjusted to maintain the ethanol solution at the optimal temperature required for extraction.

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