Quercetin purification device

Abstract

The utility model relates to the technical field of quercetin production, in particular to a quercetin purification device. The utility model provides a quercetin purification device. The quercetin purification device comprises a mixing kettle, a purification barrel, a refrigeration device, a liquid feeding assembly, a quercetin crystallization and separation device and a crystallization solvent reflux assembly, the mixing kettle is provided with a feeding hole, and the refrigerating device is used for reducing the temperature in the purifying barrel; one end of the liquid feeding assembly is communicated with a water outlet in the bottom of the mixing kettle, the other end of the liquid feeding assembly is communicated with the purification barrel, and the liquid feeding assembly is used for conveying a mixed solution in the mixing kettle into the purification barrel; the purification barrel comprises a barrel cover covering an opening in the top of the purification barrel. According to the quercetin purification device, quercetin crystals and a crystallization solvent in the purification barrel can be automatically separated, the quercetin crystals are moved out of the purification barrel, and the utilization rate of the crystallization solvent is also improved.

Description

Technical Field

[0001] The utility model relates to the technical field of quercetin production, in particular to a quercetin purification device. Background Art

[0002] Quercetin, also known as quercetin, is soluble in glacial acetic acid, and its alkaline aqueous solution is yellow. It is almost insoluble in water, and its ethanol solution tastes very bitter. It can be used as a medicine, has good expectorant and antitussive effects, and has a certain antiasthmatic effect. Quercetin is widely present in the stems, flowers, leaves, and seeds of many plants, mostly in the form of glycosides. When preparing and purifying quercetin, it is necessary to further improve the purity of quercetin by recrystallization, thereby increasing the purity during use. The specific steps are as follows: quercetin and a crystallization solvent are placed in a mixing tank for mixing, quercetin is dissolved in the crystallization solvent, and then the mixed solution in the mixing tank is poured into a crystallization container. Under the action of a refrigeration device, the temperature of the mixed solution is gradually reduced, causing the quercetin to recrystallize, and then the quercetin crystals and the crystallization solvent are separated, and the quercetin crystals are washed and dried to obtain a high-purity quercetin product.

[0003] Current recrystallization processes for quercetin present the following technical challenges: First, after recrystallization, the crystallization vessel must be opened to remove the quercetin crystals from the solvent, preventing automated separation of the quercetin crystals and making large-scale production cumbersome. Second, the utilization rate of the crystallization solvent within the crystallization vessel is low, making it impossible to recycle. Utility Model Content

[0004] (1) The problem to be solved by the present invention is that after the recrystallization is completed, the crystallization container needs to be opened to remove the quercetin crystals from the solvent, which makes it impossible to automatically separate the quercetin crystals, and the utilization rate of the crystallization solvent in the crystallization container is low.

[0005] (2) Technical solution

[0006] A quercetin purification device comprises a mixing kettle, a purification barrel, a refrigeration device, a liquid feeding component, a quercetin crystallization separation device, and a crystallization solvent reflux component; the mixing kettle has a feed inlet, and the refrigeration device is used to reduce the temperature in the purification barrel;

[0007] One end of the liquid delivery component is connected to the bottom water outlet of the mixing kettle, and the other end is connected to the purification barrel. The liquid delivery component is used to deliver the mixed solution inside the mixing kettle to the purification barrel;

[0008] The purification barrel includes a barrel cover that covers the top opening of the purification barrel. The quercetin crystallization and separation device includes an extraction barrel, a connecting rod, and a lifting mechanism. The extraction barrel is placed in the purification barrel, and the top of the extraction barrel is open. A plurality of filter holes are evenly arranged on the inner bottom wall. The bottom end of the connecting rod is connected to the extraction barrel, and the top end of the connecting rod is connected to the lower surface of the barrel cover. The lifting mechanism is used to drive the barrel cover to rise and fall along the axis of the purification barrel.

[0009] The crystallization solvent reflux assembly includes a solvent recovery pipe 1, a solvent recovery pipe 2 and a second water pump. One end of the solvent recovery pipe 1 is connected to the purification barrel, and the other end thereof is connected to the water inlet of the second water pump. One end of the solvent recovery pipe 2 is connected to the mixing kettle, and the other end thereof is connected to the water outlet of the second water pump.

[0010] According to one embodiment of the present utility model, the lifting mechanism includes a screw, a second motor, a plurality of vertical rods and a push rod; a plurality of fixed blocks are installed on the side wall of the purification barrel around its axis, the screw is vertically arranged on one of the fixed blocks and is rotatably connected to the fixed block, a plurality of the vertical rods are vertically installed on different fixed blocks respectively, the tops of the plurality of vertical rods are connected to the push rod, the top end of the screw is rotatably connected to the push rod, the barrel cover and the screw are screwed together, a plurality of the vertical rods pass through the barrel cover, and the output end of the second motor is connected to one end of the screw.

[0011] According to one embodiment of the present utility model, the liquid delivery assembly includes a first water pump, a discharge pipe and a liquid inlet pipe, one end of the discharge pipe is connected to the water inlet of the first water pump, and the other end thereof is connected to the bottom liquid outlet of the mixing kettle, one end of the liquid inlet pipe is connected to the water outlet of the first water pump, and the other end thereof is connected to the circular hole on the side wall of the purification barrel.

[0012] According to one embodiment of the present invention, a stirring mechanism is installed on the mixing kettle, and the stirring mechanism is used to stir the quercetin crystals and the crystallization solvent in the mixing kettle.

[0013] According to one embodiment of the present invention, the stirring mechanism includes a first motor, a box body, two stirring paddles, a driving pulley, a driven pulley and a transmission belt;

[0014] The box body is fixedly installed on the top of the mixing kettle, the driving pulley and the driven pulley are rotatably installed inside the box body, the transmission belt is connected between the driving pulley and the driven pulley, the output end of the first motor is connected to the driving pulley, and the lower surfaces of the driving pulley and the driven pulley are respectively fixedly connected with a stirring paddle, and the stirring paddle extends into the interior of the mixing kettle.

[0015] According to one embodiment of the present invention, a jacket is installed on the outer wall of the mixing kettle, a heating chamber is formed in the jacket, and a jacket water inlet pipe and a jacket water outlet pipe are sequentially connected to the jacket.

[0016] According to one embodiment of the present invention, a plurality of holes are evenly arranged on the side wall of the extraction barrel.

[0017] According to one embodiment of the present invention, the quercetin purification device further includes a control box, and the control box is signal-connected to the second motor.

[0018] According to an embodiment of the present invention, an annular groove is provided on the upper surface of the purification barrel, and a sealing ring is installed in the annular groove.

[0019] According to an embodiment of the present invention, a drain pipe is installed on the side wall of the purification barrel near the bottom thereof, and a valve body for controlling the on-off of the drain pipe is installed on the drain pipe.

[0020] Beneficial effects of the utility model:

[0021] The utility model provides a quercetin purification device, comprising:

[0022] When recrystallizing quercetin, the quercetin to be recrystallized is first added to the mixing kettle from the feed port of the mixing kettle. Then, the crystallization solvent is added to the mixing kettle from the feed port of the mixing kettle. The crystallization solvent and quercetin are mixed, and the quercetin quickly dissolves in the crystallization solvent. The mixed solvent is then transported to the purification barrel using a liquid delivery assembly. The refrigeration device is then turned on to reduce the temperature of the mixed solvent, and the quercetin recrystallized falls into the extraction barrel. After the quercetin recrystallization is completed, the lifting mechanism is turned on, which drives the barrel cover to move upward, thereby driving the connecting rod to pull the extraction barrel upward until the extraction barrel is removed from the purification barrel. Due to the filter holes on the bottom wall of the extraction barrel, the quercetin crystals are retained in the extraction barrel, while the crystallization solution remains in the purification barrel. The workers then send the quercetin crystals in the extraction barrel to the subsequent process for water washing and drying. The second motor then reverses to return the extraction barrel and the barrel cover to their original position.

[0023] In addition, by opening the valve on the solvent recovery pipe 1 and starting the second water pump, the crystallization solvent is drawn into the solvent recovery pipe 1 and pumped out into the solvent recovery pipe 2 by the second water pump, and finally flows back into the mixing kettle.

[0024] In the present application, after the quercetin recrystallization is completed, the quercetin crystals and the crystallization solvent in the purification barrel can be automatically separated, and the quercetin crystals can be removed from the purification barrel so that workers can send the quercetin crystals to the next step, thereby greatly improving work efficiency and reducing the labor intensity of workers. In addition, the crystallization solvent reflux component can be used to send the crystallization solvent in the purification barrel back to the mixing kettle, eliminating the need to drain the crystallization solvent in the purification barrel, thereby improving the utilization rate of the crystallization solvent and achieving maximum recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A front view of an embodiment of the present utility model;

[0027] Figure 2 A rear view provided for an embodiment of the present utility model;

[0028] Figure 3 A cross-sectional view of an embodiment of the present invention is provided.

[0029] Icons: 1. Mixing kettle; 101. Feed inlet; 102. Drain pipe; 103. Jacket water inlet pipe; 104. Solvent inlet; 105. Jacket water outlet pipe; 106. Jacket; 107. Solvent recovery pipe 2; 2. Purification barrel; 201. Liquid inlet pipe; 202. Barrel cover; 203. Drain pipe; 204. Solvent recovery pipe 1; 3. Refrigeration device; 4. First water pump; 5. Second water pump; 6. Box body; 7. First motor; 8. First stirring paddle; 9. Second stirring paddle; 10. Extraction barrel; 11. Connecting rod; 12. Second motor; 13. Screw; 14. Push rod; 15. Vertical rod. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] like Figure 1-Figure 3As shown, one embodiment of the present invention provides a quercetin purification device, comprising a mixing kettle 1, a purification barrel 2, a refrigeration device 3, a liquid feeding component, a quercetin crystallization separation device, and a crystallization solvent reflux component; the mixing kettle 1 has a feed inlet 101, and the refrigeration device 3 is used to reduce the temperature in the purification barrel 2;

[0032] One end of the liquid delivery component is connected to the bottom water outlet of the mixing kettle 1, and the other end is connected to the purification barrel 2. The liquid delivery component is used to deliver the mixed solution inside the mixing kettle 1 to the purification barrel 2;

[0033] The purification barrel 2 includes a barrel cover 202 covering the top opening of the purification barrel 2. The quercetin crystallization separation device includes an extraction barrel 10, a connecting rod 11 and a lifting mechanism. The extraction barrel 10 is placed in the purification barrel 2, and the top of the extraction barrel 10 is open. A plurality of filter holes are evenly arranged on the inner bottom wall. The bottom end of the connecting rod 11 is connected to the extraction barrel 10, and the top end thereof is connected to the lower surface of the barrel cover 202. The lifting mechanism is used to drive the barrel cover 202 to rise and fall along the axis direction of the purification barrel 2.

[0034] The crystallization solvent reflux assembly includes a solvent recovery pipe 204, a solvent recovery pipe 107 and a second water pump 5. One end of the solvent recovery pipe 204 is connected to the purification barrel 2, and the other end thereof is connected to the water inlet of the second water pump 5. One end of the solvent recovery pipe 107 is connected to the mixing kettle 1, and the other end thereof is connected to the water outlet of the second water pump 5.

[0035] In this embodiment, when quercetin is recrystallized, the quercetin to be recrystallized is first put into the mixing kettle 1 from the feed port 101 of the mixing kettle 1, and then the crystallization solvent is put into the mixing kettle 1 from the feed port 101 of the mixing kettle 1, the crystallization solvent and quercetin are mixed, and the quercetin is quickly dissolved in the crystallization solvent. Subsequently, the mixed solvent is transported to the purification barrel 2 by the liquid feeding component, and then the refrigeration device 3 is turned on to reduce the temperature of the mixed solvent, and the quercetin recrystallization falls. After the quercetin recrystallizes into the extraction barrel 10, the lifting mechanism is activated, which drives the barrel cover 202 upward, thereby driving the connecting rod 11 to pull the extraction barrel 10 upward until the extraction barrel 10 is removed from the purification barrel 2. Due to the filter holes on the bottom wall of the extraction barrel 10, the quercetin crystals are retained in the extraction barrel 10, while the crystallization solution remains in the purification barrel 2. The workers then send the quercetin crystals in the extraction barrel 10 to the subsequent process for washing and drying. The second motor 12 then reverses to return the extraction barrel 10 and the barrel cover 202 to their original positions.

[0036] In addition, by opening the valve on the solvent recovery pipe 1 204 and starting the second water pump 5, the crystallization solvent is extracted into the solvent recovery pipe 1 204 and pumped out into the solvent recovery pipe 2 107 by the second water pump 5, and finally flows back into the mixing kettle 1.

[0037] It can be seen that in the present application, after the quercetin recrystallization is completed, the quercetin crystals and the crystallization solvent in the purification barrel 2 can be automatically separated, and the quercetin crystals can be removed from the purification barrel 2 so that workers can send the quercetin crystals to the next step, thereby greatly improving work efficiency and reducing the labor intensity of workers. In addition, the crystallization solvent in the purification barrel 2 can be sent back to the mixing kettle 1 through the crystallization solvent reflux component, without the need to discharge the crystallization solvent in the purification barrel 2, thereby improving the utilization rate of the crystallization solvent and achieving maximum recycling.

[0038] Optionally, a solvent inlet 104 is further provided at the top of the mixing kettle 1, and the feed port 101 and the solvent inlet 104 are respectively connected to the pipe at the bottom of the quercetin storage and feeding device, and the solvent inlet 104 is connected to the bottom pipe of the crystallization solvent storage device, and the bottom pipe of the quercetin storage and feeding device and the bottom pipe of the crystallization solvent storage device are respectively installed with valve bodies.

[0039] As a preferred embodiment, Figure 1 As shown, the lifting mechanism includes a screw 13, a second motor 12, a plurality of vertical rods 15 and a push rod 14. Four fixed blocks are evenly installed on the side wall of the purification barrel 2 around its axis. The screw 13 is vertically set on one fixed block and is rotatably connected to the fixed block. Three vertical rods 15 are provided, and the three vertical rods 15 are respectively vertically installed on the remaining three fixed blocks. The push rod 14 is a cross rod, one end of the cross rod is rotatably connected to the screw 13, and the remaining three ends are respectively fixedly connected to the top ends of the three vertical rods 15. Four connecting blocks are installed on the side of the barrel cover 202. The four connecting blocks are evenly arranged around the axis of the barrel cover 202. Among them, one connecting block is screwed to the screw 13, and the remaining three connecting rods 11 are respectively slidably connected to the three vertical rods 15. The second motor 12 is fixedly installed on the side wall of the purification barrel 2, and the output end of the second motor 12 is connected to the bottom end of the screw 13.

[0040] Further, such as Figure 3 As shown, the outer diameter of the extraction barrel 10 is slightly smaller than the inner diameter of the purification barrel 2, and a plurality of connecting rods 11 are provided. The tops of the plurality of connecting rods 11 are detachably connected to the lower surface of the barrel cover 202, and the bottoms thereof are detachably connected to the top surface of the extraction barrel 10.

[0041] In this way, when the quercetin recrystallization is completed, the second motor 12 is turned on, and the second motor 12 drives the screw 13 to rotate. The rotation of the screw 13 drives the barrel cover 202 to move upward, so as to drive the connecting rod 11 to pull the extraction barrel 10 up. As the extraction barrel 10 rises, the quercetin crystals are retained in the extraction barrel 10, and the solvent passes through the filter holes on the extraction barrel 10 until the extraction barrel 10 is moved out of the extraction barrel 10, and the second motor 12 stops working. After the worker takes out the quercetin crystals in the extraction barrel 10, the second motor 12 reverses to move the barrel cover 202 and the extraction barrel 10 downward until the barrel cover 202 covers the top opening of the purification barrel 2. At this time, the extraction barrel 10 just moves to the inner bottom wall of the purification barrel 2.

[0042] This allows for quick and easy separation of quercetin from the crystallization solvent, allowing for quick removal of quercetin crystals without manual retrieval, making the process more convenient and reducing the labor burden on workers. Furthermore, when resetting, the barrel cover 202 can still be closed onto the purification barrel 2 to avoid damaging the low-temperature environment within the purification barrel 2.

[0043] As an optional embodiment, the lifting mechanism can be replaced by other commonly used lifting devices, such as installing a cylinder on the fixed block, the top of the cylinder is connected to the barrel cover 202, and the cylinder is used to lift the barrel cover 202 to drive the extraction barrel 10 to rise.

[0044] As a specific example, Figure 1 As shown, the liquid delivery component includes a first water pump 4, a discharge pipe 102 and a liquid inlet pipe 201. One end of the discharge pipe 102 is connected to the water inlet of the first water pump 4, and the other end is connected to the bottom liquid outlet of the mixing kettle 1. A valve is installed on the discharge pipe 102 near the bottom of the mixing kettle 1, and one end of the liquid inlet pipe 201 is connected to the water outlet of the first water pump 4. A circular hole is provided on the side wall of the purification barrel 2 near its bottom, and the end of the liquid inlet pipe 201 away from the first water pump 4 is connected to the circular hole on the side wall of the purification barrel 2.

[0045] As an optional embodiment, in order to accelerate the separation rate of quercetin crystals and the crystallization solvent in the extraction barrel 10 , a plurality of holes are evenly provided on the side of the extraction barrel 10 .

[0046] As a preferred embodiment, a drain port is provided on the side wall of the purification barrel 2 near its bottom. A drain pipe 203 is sealed and mounted at the drain port. A valve body is mounted on the drain pipe 203 to control its on / off function. By opening the valve body, the crystallization solvent in the purification barrel 2 can be drained through the drain pipe 203. For example, when the purification barrel 2 is regularly cleaned, the valve body can be opened to drain the crystallization solvent in the purification barrel 2, and then the barrel can be rinsed with clean water.

[0047] As an optional embodiment, the upper surface of the purification barrel 2 is provided with an annular groove, in which a sealing ring is installed. The upper surface of the sealing ring protrudes from the upper surface of the purification barrel 2, and an annular groove adapted to the sealing ring is provided on the lower surface of the barrel cover 202.

[0048] Preferably, in order to accelerate the dissolution rate of quercetin in the mixing kettle 1, the stirring mechanism on the original mixing kettle 1 is improved. The stirring mechanism in this embodiment is as follows: Figure 3 As shown, the stirring mechanism includes a first motor 7, a box body 6, a first stirring paddle 8, a second stirring paddle 9, a driving pulley, a driven pulley and a transmission belt;

[0049] Among them, the box body 6 is fixedly installed on the top of the mixing kettle 1, the driving pulley and the driven pulley are rotatably installed inside the box body 6, the transmission belt is connected between the driving pulley and the driven pulley, the first motor 7 is installed on the top of the box body 6, and the output end of the first motor 7 is connected to the driving pulley, the first stirring paddle 8 and the second stirring paddle 9 are vertically arranged in the mixing kettle 1, and the top of the first stirring paddle 8 is fixed on the lower surface of the driven pulley, and the top of the second stirring paddle 9 is fixed on the lower surface of the driving pulley.

[0050] The first motor 7 drives the driving pulley to rotate, and the transmission belt is connected between the driving pulley and the driven pulley, thereby driving the driven pulley to rotate synchronously, and finally driving the first stirring paddle 8 and the second stirring paddle 9 to rotate together. The first stirring paddle 8 and the second stirring paddle 9 stir together, accelerating the dissolution rate of quercetin.

[0051] As a preferred embodiment, Figure 2 As shown, a jacket 106 is installed on the outer wall of the mixing kettle 1, and a heating chamber is formed in the jacket 106. Figure 1 As shown, a jacket water inlet pipe 103 is installed near the bottom of the outer wall of the jacket 106, and a jacket water outlet pipe 105 is installed near the top. The jacket water inlet pipe 103 is connected to a hot water pipe, and a valve is installed on the jacket water outlet pipe 105. Hot water is pumped into the jacket water inlet pipe 103 through the hot water pipe and then enters the heating chamber of the jacket 106 to increase the temperature in the mixing kettle 1, thereby increasing the temperature of the crystallization solvent, thereby greatly accelerating the dissolution efficiency of quercetin.

[0052] As an optional embodiment, a control box is further included, and the first motor 7, the second motor 12, the first water pump 4 and the second water pump 5 are respectively connected to the control box by signal, and the operation of each component is controlled by the control box.

[0053] In the description of this utility model, it should be noted that the terms "upper" and "lower" and other terms indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0054] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A quercetin purification device, characterized in that, The invention comprises a mixing kettle (1), a purification barrel (2), a refrigeration device (3), a liquid feeding component, a quercetin crystallization separation device and a crystallization solvent reflux component; the mixing kettle (1) has a feed port (101), and the refrigeration device (3) is used to reduce the temperature in the purification barrel (2); One end of the liquid delivery component is connected to the bottom water outlet of the mixing kettle (1), and the other end is connected to the purification barrel (2). The liquid delivery component is used to deliver the mixed solution inside the mixing kettle (1) to the purification barrel (2); The purification barrel (2) includes a barrel cover (202) covering the top opening of the purification barrel (2), and the quercetin crystallization separation device includes an extraction barrel (10), a connecting rod (11) and a lifting mechanism. The extraction barrel (10) is placed in the purification barrel (2), and the top of the extraction barrel (10) is open, and a plurality of filter holes are evenly provided on the inner bottom wall thereof. The bottom end of the connecting rod (11) is connected to the extraction barrel (10), and the top end thereof is connected to the lower surface of the barrel cover (202). The lifting mechanism is used to drive the barrel cover (202) to rise and fall along the axial direction of the purification barrel (2); The crystallization solvent reflux assembly includes a solvent recovery pipe 1 (204), a solvent recovery pipe 2 (107) and a second water pump (5), one end of the solvent recovery pipe 1 (204) is connected to the purification barrel (2), and the other end thereof is connected to the water inlet of the second water pump (5), one end of the solvent recovery pipe 2 (107) is connected to the mixing kettle (1), and the other end thereof is connected to the water outlet of the second water pump (5).

2. A quercetin purification device according to claim 1, characterized in that, The lifting mechanism includes a screw (13), a second motor (12), a plurality of vertical rods (15) and a top rod (14); a plurality of fixed blocks are installed on the side wall of the purification barrel (2) around its axis, the screw (13) is vertically arranged on one of the fixed blocks and is rotatably connected to the fixed block, the plurality of vertical rods (15) are vertically installed on different fixed blocks, the tops of the plurality of vertical rods (15) are connected to the top rod (14), the tops of the screw (13) are rotatably connected to the top rod (14), the barrel cover (202) and the screw (13) are screwed together, the plurality of vertical rods (15) pass through the barrel cover (202), and the output end of the second motor (12) is connected to one end of the screw (13).

3. A quercetin purification device according to claim 1, characterized in that, The liquid delivery assembly comprises a first water pump (4), a liquid discharge pipe (102) and a liquid inlet pipe (201); one end of the liquid discharge pipe (102) is connected to the water inlet of the first water pump (4), and the other end thereof is connected to the liquid outlet at the bottom of the mixing kettle (1); one end of the liquid inlet pipe (201) is connected to the water outlet of the first water pump (4), and the other end thereof is connected to the circular hole on the side wall of the purification barrel (2).

4. A quercetin purification device according to claim 1, characterized in that, The mixing kettle (1) is provided with a stirring mechanism, and the stirring mechanism is used to stir the quercetin crystals and the crystallization solvent in the mixing kettle (1).

5. A quercetin purification device according to claim 4, characterized in that, The stirring mechanism comprises a first motor (7), a box body (6), two stirring paddles, a driving pulley, a driven pulley and a transmission belt; The box body (6) is fixedly mounted on the top of the mixing kettle (1), the driving pulley and the driven pulley are rotatably mounted inside the box body (6), the transmission belt is connected between the driving pulley and the driven pulley, the output end of the first motor (7) is connected to the driving pulley, and the lower surfaces of the driving pulley and the driven pulley are respectively fixedly connected with a stirring paddle, and the stirring paddle extends into the interior of the mixing kettle (1).

6. A quercetin purification device according to claim 5, characterized in that, A jacket (106) is installed on the outer wall of the mixing kettle (1), a heating chamber is formed in the jacket (106), and a jacket water inlet pipe (103) and a jacket water outlet pipe (105) are sequentially connected to the jacket (106).

7. A quercetin purification device according to claim 1, characterized in that, A plurality of holes are evenly arranged on the side wall of the extraction barrel (10).

8. A quercetin purification device according to claim 2, characterized in that, The quercetin purification device further comprises a control box, and the control box is signal-connected to the second motor (12).

9. A quercetin purification device according to claim 1, characterized in that, An annular groove is provided on the upper surface of the purification barrel (2), and a sealing ring is installed in the annular groove.

10. The quercetin purification device according to claim 1, characterized in that: A drain pipe (203) is installed on the side wall of the purification barrel (2) near the bottom thereof, and a valve body for controlling the on-off of the drain pipe (203) is installed on the drain pipe (203).

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