Production device and production process of methyl hesperidin dihydrochalcone
By introducing multi-axis counter-rotating stirring and radial turbulence structures into the methyl hesperidin dihydrochalcone production device, the problem of insufficient gas-liquid-solid three-phase mixing in traditional devices was solved, efficient hydrogenation reaction and product uniformity were achieved, and the efficiency and yield of the reduction reaction were improved.
Patent Information
- Application Number
- CN202510840319.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-23
- Publication Date
- 2025-09-19
AI Technical Summary
Traditional stirring devices do not mix the gas, liquid and solid three phases sufficiently, resulting in poor mass transfer, low efficiency and uneven product in the hydrogenation reaction.
A production device for methyl hesperidin dihydrochalcone is used, including a stirring component and a disturbance component. The stirring component is composed of a first rotating rod and a second rotating rod, and the disturbance component is composed of a reciprocating stirring module and a driving module. Through multi-axis counter-rotating stirring and radial disturbance structure, combined with vacuum interlayer insulation and a refractive observation mirror, efficient mixing of gas, liquid and solid phases is achieved.
The mixing efficiency of the gas-liquid-solid three-phase reaction was significantly improved, the reaction activity and control precision were enhanced, and the reduction reaction rate of methyl hesperidin and the product yield and purity were improved.
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Figure CN120662244A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of methyl hesperidin dihydrochalcone processing, in particular to a production device and a production process of methyl hesperidin dihydrochalcone. Background Art
[0002] Methyl hesperidin dihydrochalcone, a natural flavonoid derivative with significant biological activity and promising applications, is typically prepared from methyl hesperidin via a catalytic hydrogenation reduction reaction. In existing technologies, this reaction typically involves a heated reactor with a central stirring shaft for mixing, and the catalyst used is typically a hydrogenation catalyst such as palladium-on-carbon or platinum-on-carbon.
[0003] However, traditional devices generally have problems such as insufficient stirring efficiency, limited mass transfer capacity, and insufficient dispersion of reactants. Especially when it comes to gas-liquid-solid three-phase reaction systems, gas-phase hydrogen is difficult to distribute evenly, affecting the catalytic efficiency and reaction rate. The traditional stirring structure has poor mixing effect on the gas-liquid-solid three-phase, the degree of hydrogen dispersion in the liquid phase is limited, and the mass transfer process is slow, which seriously restricts the reduction reaction rate, resulting in incomplete reduction or increased side reactions. In addition, the lack of an effective turbulence system makes it impossible to perform periodic disturbance control on the reactants, resulting in uneven reaction conditions in the system, affecting the yield and purity of the final product, and low production stability and control accuracy.
[0004] Therefore, it is necessary to provide a production device and a production process for methyl hesperidin dihydrochalcone to solve the above problems.
[0005] It should be noted that the above information disclosed in this Background section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute prior art. Summary of the Invention
[0006] Based on the above problems existing in the prior art, the problem to be solved by this application is that the traditional stirring device does not mix the gas, liquid and solid three phases sufficiently, resulting in poor mass transfer, low efficiency and uneven product in the hydrogenation reaction.
[0007] The technical solution adopted by the present application to solve the technical problem is: a production device and production process of methyl hesperidin dihydrochalcone, comprising: a reduction tank and support legs supporting the reduction tank, the bottom of the reduction tank being provided with a discharge port; a top cover, the top cover being provided on the top of the reduction tank, the top middle portion of the top cover being provided with a rotating motor; and characterized in that it also includes: A stirring assembly, the stirring assembly comprising a first rotating rod and a second rotating rod rotatably mounted inside the reduction tank, the bottom of the second rotating rod being fixedly connected to a central stirring rod, the outer surface of the central stirring rod being fixedly sleeved with a central stirring blade, the stirring assembly being used to uniformly disperse the catalyst and reactants; The turbulence component includes a reciprocating stirring module and a driving module, the reciprocating stirring module includes an adapter frame which is arranged at the bottom of the first rotating rod and is jointly mounted on the top of the second rotating rod, a lower extension plate is fixedly installed on one side of the adapter frame, the reciprocating stirring module is used to enhance radial turbulence during stirring, the driving module includes an adjusting gear disk rotatably mounted on the bottom of the second rotating rod, a plurality of sliding grooves are opened on the adjusting gear disk, a fixed plate is provided at the bottom of the lower extension plate, a plurality of sliding plates are slidably mounted on the fixed plate, a positioning block which slides inside the sliding groove is provided on one side of the plurality of sliding plates, and the driving module is used to drive the reciprocating stirring module to perform reciprocating stirring turbulence.
[0008] Preferably, a connecting plate is provided at the bottom of the first rotating rod, a side stirring rod is provided on the other side of the connecting plate, and a side stirring blade is provided on the side stirring rod. The adapter frame is arranged in a U shape, and a first bevel gear is provided at the internal top of the adapter frame, and a second bevel gear is provided on the internal bottom surface of the adapter frame. A conversion bevel gear meshing with the first bevel gear and the second bevel gear is provided on the internal side surface of the adapter frame. The first bevel gear is fixedly connected to the bottom end of the first rotating rod, and the second bevel gear is fixedly connected to the top end of the second rotating rod.
[0009] Preferably, one side of the side stirring rod is in contact with the inner wall of the reduction tank, and the side stirring rod is arranged to be circular, the rotation direction of the side stirring rod is consistent with the driving direction of the rotating motor, and the rotation direction of the second rotating rod is opposite to the driving direction of the rotating motor.
[0010] Preferably, the middle part of the fixed plate is rotatably sleeved on the outer surface of the central stirring rod, and a plurality of movable stirring rods are provided at the bottom of one side of the sliding plate. The plurality of sliding plates are arranged in a circle on the fixed plate, and the movable stirring rods are rotatably sleeved with a plurality of rotating stirring blades. The plurality of movable stirring rods approach or move away from each other during the sliding of the sliding plate.
[0011] Preferably, a slider is further provided on one side of the fixed plate, and a first rotating rod and a second rotating rod are rotatably mounted on the slider respectively, the bottom fixed sleeve of the first rotating rod is provided with a first meshing gear meshing with the first rotating rod, the top fixed sleeve of the first rotating rod is provided with a second meshing gear, the middle fixed sleeve of the second rotating rod is provided with a third meshing gear meshing with the second meshing gear, and the top fixed sleeve of the second rotating rod is provided with a fourth meshing gear.
[0012] Preferably, the middle part of the second rotating rod is fixedly sleeved with a first driving plate and a second driving plate in sequence from bottom to top, one side of the first driving plate and the second driving plate are both set to be arc-shaped, and a plurality of teeth are provided on one side of the arc-shaped surface, the height of the first driving plate is consistent with the height of the second meshing gear, and the height of the second driving plate is consistent with the height of the fourth meshing gear.
[0013] Preferably, the first rotating rod and the second rotating rod are arranged one in front of the other, the first driving plate and the second driving plate are arranged in an alternating distribution, the teeth on one side of the first driving plate engage with the second meshing gear during rotation, and the teeth on one side of the second driving plate engage with the fourth meshing gear during rotation.
[0014] Preferably, the slide groove is opened in an arc shape, and when the adjusting gear disk rotates, the positioning block and the sliding plate are pushed to slide horizontally through the arc-shaped slide groove, and the top cover is respectively provided with a feed port and a pressure relief port.
[0015] Preferably, the outer shell of the reduction tank is configured as a vacuum interlayer, a heating plate is provided on a side of the interlayer of the reduction tank close to the inner wall, and a refractive observation mirror is provided on a bottom side of the reduction tank.
[0016] The present invention also discloses a production process of methyl hesperidin dihydrochalcone, which is applied to the above-mentioned production device of methyl hesperidin dihydrochalcone and comprises the following steps: S1: Add raw materials, catalyst and solvent into the reduction tank through the feed port, close the top cover, and vacuum and heat; S2: Turn on the rotating motor to drive the first rotating rod and the second rotating rod to rotate, driving the stirring component to stir; S3: The turbulence component is started, and the adjusting toothed disc drives the sliding plate to move back and forth periodically to achieve radial turbulence stirring; S4: The heating plate continuously provides a constant temperature heat source, and the vacuum interlayer provides thermal insulation to maintain a stable reaction. S5: Monitor the internal liquid level and status through the observation mirror to ensure the reaction is safe and controllable; S6: After the reaction is completed, the product is discharged through the bottom discharge port and the gas is exhausted through the pressure relief port to complete the entire reduction process.
[0017] The beneficial effects of the present application are as follows: a production device and production process of methyl hesperidin dihydrochalcone provided by the present application, by setting a turbulence component consisting of an adjusting gear plate, a slide groove, a sliding plate, a movable stirring rod and a self-rotating stirring blade, and combining the staggered meshing structure of the first drive plate and the second drive plate, utilizing the forward and reverse periodic transmission formed by the linkage with multiple sets of gears during the rotation process, to achieve continuous reciprocating expansion and contraction movement of the sliding plate and the several movable stirring rods connected thereto, which can generate strong radial turbulence disturbance in the reduction tank, continuously break up bubbles, promote the full mixing of the three-phase materials, and significantly enhance the contact efficiency of the gas, liquid and solid reaction interfaces. It is particularly suitable for process scenarios such as catalytic hydrogenation that have high requirements for mixing uniformity and mass transfer efficiency, and effectively improves the overall reaction activity and control accuracy.
[0018] By providing a U-shaped adapter frame and arranging a first bevel gear, a second bevel gear, and a conversion bevel gear within it, a reverse transmission connection is achieved between the first rotating rod and the second rotating rod, thereby driving the side stirring rods located on the inner wall of the reduction tank and the central stirring rod in the center of the tank to rotate and stir in opposite directions. This structure utilizes two stirring methods in opposite directions to form a composite shear flow field within the reaction tank, effectively enhancing fluid disturbance, accelerating material tumbling and heat conduction, and simultaneously improving the dispersion rate and mass transfer efficiency of hydrogen in the liquid phase, promoting sufficient mixing and contact between the reactants and the catalyst, thereby increasing the reduction reaction rate and reaction uniformity of methyl hesperidin, further improving product yield and purity.
[0019] In addition to the above-described purposes, features and advantages, the present application has other purposes, features and advantages. The present application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 Schematic diagram of the internal structure of the present invention; Figure 3 It is a schematic diagram of the planar structure of the present invention; Figure 4 For the present invention Figure 2 A in the middle is an enlarged structural diagram; Figure 5 Schematic diagram of the structure of the stirring component and the spoiler component of the present invention; Figure 6 This is a schematic diagram of the structure of the fixed plate, sliding plate and adjusting gear plate of the present invention; Figure 7 This is a schematic diagram of the bottom structure of the spoiler assembly of the present invention; Figure 8 It is a schematic structural diagram of the driving module of the present invention.
[0021] In the figure: 1. reduction tank; 2. supporting legs; 3. top cover; 4. feed port; 5. pressure relief port; 6. rotating motor; 7. refractive observation mirror; 8. discharge port; 9. first rotating rod; 10. adapter frame; 11. second rotating rod; 12. first bevel gear; 13. conversion bevel gear; 14. second bevel gear; 15. connecting plate; 16. side stirring rod; 17. side stirring blade; 18. center stirring rod; 19. center stirring blade; 20. lower extension plate; 21. fixed plate; 22. sliding plate; 23. movable stirring rod; 24. self-rotating stirring blade; 25. adjusting gear plate; 26. slide groove; 27. slider; 28. first rotating rod; 29. first meshing gear; 30. second meshing gear; 31. second rotating rod; 32. third meshing gear; 33. fourth meshing gear; 34. first driving plate; 35. second driving plate; 36. positioning block. DETAILED DESCRIPTION
[0022] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0023] In order to enable those skilled in the art to better understand the present invention, the following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present invention.
[0024] Reference Figures 1-8, a production device for methyl hesperidin dihydrochalcone, comprising a reduction tank 1 and a supporting leg 2 supporting the reduction tank 1, a discharge port 8 is provided at the bottom of the reduction tank 1; a top cover 3, the top cover 3 is arranged on the top of the reduction tank 1, and a rotating motor 6 is provided at the middle of the top of the top cover 3; it is characterized in that it also includes: a stirring assembly, the stirring assembly includes a first rotating rod 9 and a second rotating rod 11 rotatably mounted inside the reduction tank 1, the bottom of the second rotating rod 11 is fixedly connected to a central stirring rod 18, the outer surface of the central stirring rod 18 is fixedly sleeved with a central stirring blade 19, the stirring assembly is used to uniformly disperse the catalyst and the reactant; a turbulence assembly, the turbulence assembly includes a reciprocating stirring module and a driving module, the reciprocating stirring module includes a lower extension plate 20 fixedly mounted on one side of the adapter frame 10, the reciprocating stirring module is used to enhance radial turbulence during stirring, the driving module includes a rotating An adjusting toothed disc 25 is sleeved on the bottom of the second rotating rod 11, and a plurality of slide grooves 26 are opened on the adjusting toothed disc 25. A positioning block 36 that slides inside the slide groove 26 is provided on one side of the plurality of sliding plates 22. The driving module is used to drive the reciprocating stirring module to perform reciprocating stirring turbulence. Among them, the bottom of the first rotating rod 9 and the top of the second rotating rod 11 are jointly sleeved with an adapter frame 10, and the bottom of the first rotating rod 9 is sleeved with a connecting plate 15, and a side stirring rod 16 is provided on the other side of the connecting plate 15. A side stirring rod 16 is provided with a side stirring blade 17, and a fixed plate 21 is provided at the bottom of the lower extension plate 20. The middle part of the fixed plate 21 is rotatably sleeved on the outer surface of the central stirring rod 18, and a plurality of sliding plates 22 are slidably installed on the fixed plate 21. A plurality of movable stirring rods 23 are provided on the bottom of one side of the sliding plate 22, and a feed port 4 and a pressure relief port 5 are respectively provided on the top cover 3; When the system is started, the raw materials enter the reduction tank 1 through the feed port 4, and the catalyst and solvent are added at the same time. The rotating motor 6 drives the first rotating rod 9 and the second rotating rod 11 arranged on the top cover 3 to rotate, driving the central stirring rod 18 and the side stirring rod 16 located inside the tank body to rotate at high speed, realizing three-dimensional spiral stirring that penetrates up and down and takes into account both inside and outside; Among them, the side stirring blades 17 on the side stirring rod 16 are responsible for disturbing the materials near the inner wall of the tank body to prevent wall deposition, and the central stirring blades 19 on the central stirring rod 18 form a core fluid shear flip to ensure that the catalyst and substrate in the central area are evenly dispersed and improve the mixing effect of the reactants; during the rotation process, the lower extension plate 20 and the fixed plate 21 arranged on one side of the adapter 10 are on the central stirring rod 1 8 slides on the surface, driving multiple sliding plates 22 to slide back and forth in the sliding groove 26 of the adjusting toothed disc 25, thereby driving the mobile stirring rod 23 below the sliding plate 22 to periodically expand and contract in the radial direction, realizing periodic changes in the stirring radius and generating continuous turbulent fluctuations; this disturbance wave is superimposed on the stirring mainstream to form a multi-frequency, multi-scale mixed turbulent field, further promoting the full contact between the reactants and the catalyst, and at the same time making the hydrogen bubbles more finely and evenly dispersed, thereby enhancing the gas-liquid reaction interface and improving the reduction efficiency and yield; when the reaction is completed, the product is discharged through the bottom discharge port 8, and the pressure relief port 5 on the top cover 3 can control the reaction pressure and release the gas to ensure the safety of the system and complete the entire process of hydrogenation reduction to prepare dihydrochalcone.
[0025] Reference Figure 2-Figure 4 , the adapter frame 10 is arranged in a U shape, a first bevel gear 12 is provided at the top of the interior of the adapter frame 10, a second bevel gear 14 is provided on the bottom surface of the interior of the adapter frame 10, and a conversion bevel gear 13 meshing with the first bevel gear 12 and the second bevel gear 14 is provided on the inner side of the adapter frame 10. The first bevel gear 12 is fixedly connected to the bottom end of the first rotating rod 9, and the second bevel gear 14 is fixedly connected to the top end of the second rotating rod 11. One side of the side stirring rod 16 is in contact with the inner wall of the reduction tank 1, and the side stirring rod 16 is arranged in a circular shape. The rotation direction of the side stirring rod 16 is consistent with the driving direction of the rotating motor 6, and the rotation direction of the second rotating rod 11 is opposite to the driving direction of the rotating motor 6; The rotating motor 6 starts to work, and the rotating force it outputs first drives the first rotating rod 9 to rotate, and the first bevel gear 12 rotates synchronously therewith, and transmits the power to the second bevel gear 14 through the conversion bevel gear 13 meshing therewith, and then drives the second rotating rod 11 to rotate; due to the transmission characteristics of the conversion bevel gear 13, the rotation direction of the second rotating rod 11 is opposite to that of the first rotating rod 9; the two rotating rods drive their respective stirring structures: the bottom of the first rotating rod 9 is connected to the adapter frame 10 and the connecting plate 15, which drives the side stirring rod 16 set on the side of the inner wall of the reduction tank 1 to rotate and stir, and at the same time, because the side stirring rod 16 is round and fits the tank wall, its rotation will form a rolling motion near the tank wall The second rotating rod 11 extends downward to connect the central stirring rod 18 and the central stirring blade 19, and performs central axis mixing and stirring in opposite directions. Through the two opposite stirring movements, a composite shear flow field is formed inside the stirring tank, which, on the one hand, promotes the efficient and uniform dispersion of the reactants and the catalyst, and on the other hand, enhances fluid tumbling and heat conduction, which helps to efficiently disperse the hydrogen bubbles and refresh the interface, thereby accelerating the gas-liquid mass transfer process. Throughout the process, the stirring component and the turbulent component operate in coordination to make the reduction reaction conditions highly uniform and controllable, ensuring the efficient reduction of methyl hesperidin to dihydrochalcone under the action of the catalyst, thereby improving the yield and purity of the product.
[0026] Reference Figure 2-Figure 8 , a plurality of sliding plates 22 are arranged in a circle on the fixed plate 21, and a plurality of self-rotating stirring blades 24 are rotatably sleeved on the movable stirring rod 23. The plurality of movable stirring rods 23 approach or move away from each other during the sliding of the sliding plate 22. A slider 27 is also provided on one side of the fixed plate 21, and a first rotating rod 28 and a second rotating rod 31 are rotatably mounted on the slider 27. The bottom fixed sleeve of the first rotating rod 28 is provided with a first meshing gear 29 that meshes with the first rotating rod 28, and the top fixed sleeve of the first rotating rod 28 is provided with a second meshing gear 30. The middle fixed sleeve of the second rotating rod 31 is provided with a third meshing gear 32 that meshes with the second meshing gear 30, and the top fixed sleeve of the second rotating rod 31 is provided with a fourth meshing gear 33. The middle part of the second rotating rod 11 is fixedly sleeved with the first driving plate 3 in sequence from bottom to top. 4 and the second driving plate 35, one side of the first driving plate 34 and the second driving plate 35 are both set to be arc-shaped, and a plurality of teeth are provided on one side of the arc-shaped. The height of the first driving plate 34 is consistent with the height of the second meshing gear 30, and the height of the second driving plate 35 is consistent with the height of the fourth meshing gear 33. The first rotating rod 28 and the second rotating rod 31 are arranged one after the other, and the first driving plate 34 and the second driving plate 35 are arranged in a staggered distribution. The teeth on one side of the first driving plate 34 mesh with the second meshing gear 30 during rotation, and the teeth of the second driving plate 35 mesh with the fourth meshing gear 33 during rotation. The slide groove 26 is opened in an arc shape. When the adjusting gear plate 25 rotates, the arc-shaped slide groove 26 pushes the positioning block 36 and the sliding plate 22 to slide horizontally; When the device is started and the second rotating rod 11 is driven by the rotating motor 6 to start rotating, the first driving plate 34 and the second driving plate 35 fixed on the shaft thereof also rotate accordingly. Since they are at different heights and are staggered, the arc tooth portion of the first driving plate 34 first engages the second meshing gear 30 on the slider 27 during the rotation process. Driven by the gear set, the first rotating rod 28 starts to rotate and drives the adjusting toothed disc 25 to rotate synchronously through the first meshing gear 29; the arc-shaped slide groove 26 of the adjusting toothed disc 25 drives the positioning block 36 to slide along the set trajectory during the rotation process, causing the sliding plate 22 connected thereto to slide to one side, thereby driving several mobile stirring rods 23 to expand outward at the same time, increasing the stirring amplitude and forming a strong disturbance; the rotation continues through During the process, the second driving plate 35 located behind it then meshes with the fourth meshing gear 33, further driving the third meshing gear 32 meshed with it to rotate, and the third gear then meshes with the second meshing gear 30, generating reverse rotation, thereby causing the first rotating rod 28 to rotate in the opposite direction, thereby causing the adjusting toothed disc 25 to rotate in the opposite direction, and the sliding plate 22 gradually resets and shrinks inward, and the moving stirring rod 23 also shrinks accordingly, completing a complete turbulent reciprocating cycle. In this process, the sliding plates 22 arranged circumferentially on the fixed plate 21 perform expansion-contraction movements in turn around the central stirring rod 18, so that the entire tank body is always in a periodic motion field of radial dynamic disturbance, which greatly enhances the mixing effect and is particularly suitable for the process scenario of catalytic hydrogenation reaction in gas-liquid-solid three-phase system.
[0027] Reference Figures 1 to 2 The outer shell of the reduction tank 1 is set as a vacuum interlayer, a heating plate is set on the side of the interlayer close to the inner wall of the reduction tank 1, and a refractive observation mirror 7 is set on the bottom side of the reduction tank 1.
[0028] The vacuum layer can greatly reduce heat conduction and convection, effectively prevent the reaction heat from being lost to the outside, ensure the temperature inside the tank is stable, and is conducive to maintaining constant temperature reaction conditions. It is especially suitable for temperature-sensitive catalytic hydrogenation reactions. The heating plate is close to the inner wall and can be heated in a surround manner. Compared with bottom heating or local heating, it is more uniform and avoids local overheating or overcooling. A refractive observation mirror 7 is provided on one side of the bottom of the reduction tank 1. The mirror design can observe the internal liquid level and status.
[0029] The present invention also discloses a production process of methyl hesperidin dihydrochalcone, which is applied to the above-mentioned production device of methyl hesperidin dihydrochalcone and comprises the following steps: S1: Raw materials, catalyst and solvent are added into the reduction tank 1 through the feed port 4, the top cover 3 is closed, and vacuum heating is carried out; S2: Turn on the rotating motor 6 to drive the first rotating rod 9 and the second rotating rod 11 to rotate, driving the stirring assembly to stir; S3: The turbulence component is started, and the adjusting toothed disc 25 drives the sliding plate 22 to move back and forth periodically to achieve radial turbulence stirring; S4: The heating plate continuously provides a constant temperature heat source, and the vacuum interlayer provides thermal insulation to maintain a stable reaction. S5: Monitor the internal liquid level and status through the observation mirror to ensure the reaction is safe and controllable; S6: After the reaction is completed, the product is discharged through the bottom discharge port 8 and the pressure relief port 5 is vented to complete the entire reduction process; Compared with the existing technology, the production process of methyl hesperidin dihydrochalcone significantly improves the gas-liquid-solid three-phase mixing efficiency by introducing multi-axis counter-rotating stirring and radial turbulence structure in a special stirring device, and solves the problems of uneven catalyst dispersion, low gas mass transfer efficiency, and large local temperature difference in traditional hydrogenation reduction reactions. The process flow is rigorously designed, and vacuum heating and refractive observation mirror 7 are used to ensure that the reaction environment is constant and controllable, ensuring the safety and stability of the reaction. At the same time, the turbulence component driven by the sliding plate 22 realizes periodic disturbance, effectively promoting hydrogen refinement and interface renewal, improving the reduction rate and yield, and is suitable for the scenario of efficient and green preparation of dihydrochalcone.
[0030] Specifically, this solution involves the following: After the device is started, raw materials, catalyst, and solvent enter the reduction tank 1 through the feed port 4. Driven by the rotary motor 6, the first and second rotating rods 9 and 11 rotate independently. A bevel gear set within the adapter frame 10 forms a differential drive system, causing the two stirring rods to rotate in opposite directions. This in turn drives the side stirring rods 16 and the center stirring rod 18, located on the tank wall and center, to rotate in opposite directions at high speeds. The side stirring rods 16 remove deposits from the inner wall, while the center stirring rod 18 shears and stirs the fluid in the center of the tank, achieving three-dimensional stirring. Simultaneously, a flow disturbance assembly fixed to one side of the adapter frame 10, via an adjustable toothed disc 25 and a gear set linked to the second rotating rod 11, drives the sliding plate 22 and the movable stirring rod 23 below it in a reciprocating radial expansion and contraction motion, creating periodic flow disturbances and further enhancing the gas-liquid-solid three-phase mixing effect. The device's external vacuum interlayer provides thermal insulation, while the internal heating plate ensures uniform heat transfer, maintaining a constant temperature environment for the catalytic reaction. A refractive observation mirror 7 at the bottom of the tank allows for real-time observation of the reaction status and liquid level changes. The various components work together to ensure adequate diffusion of hydrogen, uniform mixing of reactants, and efficient action of the catalyst, thereby significantly improving the efficiency, stability, and yield of the reduction reaction.
[0031] It should be understood by those skilled in the art that the discussion of any of the above embodiments is merely illustrative, and within the scope of the present invention, the technical features of the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.
[0032] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A production device for methyl hesperidin dihydrochalcone, comprising: A reduction tank (1) and a support leg (2) supporting the reduction tank (1), wherein a discharge port (8) is provided at the bottom of the reduction tank (1); a top cover (3), wherein the top cover (3) is provided on the top of the reduction tank (1), and a rotating motor (6) is provided at the middle of the top of the top cover (3); and the device is characterized in that it further comprises: A stirring assembly, the stirring assembly comprising a first rotating rod (9) and a second rotating rod (11) rotatably mounted inside the reduction tank (1), the bottom of the second rotating rod (11) being fixedly connected to a central stirring rod (18), the outer surface of the central stirring rod (18) being fixedly sleeved with a central stirring blade (19), the stirring assembly being used to uniformly disperse the catalyst and the reactants; A turbulence component, the turbulence component includes a reciprocating stirring module and a driving module, the reciprocating stirring module includes an adapter frame (10) arranged at the bottom of the first rotating rod (9) and the top of the second rotating rod (11), a lower extension plate (20) is fixedly installed on one side of the adapter frame (10), the reciprocating stirring module is used to enhance radial turbulence during stirring, the driving module includes an adjusting toothed disc (25) rotatably mounted on the bottom of the second rotating rod (11), a plurality of slide grooves (26) are opened on the adjusting toothed disc (25), a fixed plate (21) is provided at the bottom of the lower extension plate (20), a plurality of sliding plates (22) are slidably installed on the fixed plate (21), a positioning block (36) sliding inside the slide groove (26) is provided on one side of the plurality of sliding plates (22), and the driving module is used to drive the reciprocating stirring module to perform reciprocating stirring turbulence.
2. The production device of methyl hesperidin dihydrochalcone according to claim 1, characterized in that: A connecting plate (15) is sleeved on the bottom of the first rotating rod (9), a side stirring rod (16) is provided on the other side of the connecting plate (15), and a side stirring blade (17) is provided on the side stirring rod (16). The adapter frame (10) is arranged in a U shape, a first bevel gear (12) is provided on the top of the interior of the adapter frame (10), a second bevel gear (14) is provided on the bottom surface of the interior of the adapter frame (10), and a conversion bevel gear (13) meshing with the first bevel gear (12) and the second bevel gear (14) is provided on the inner side surface of the adapter frame (10). The first bevel gear (12) is fixedly connected to the bottom end of the first rotating rod (9), and the second bevel gear (14) is fixedly connected to the top end of the second rotating rod (11).
3. A production device for methyl hesperidin dihydrochalcone according to claim 2, characterized in that, One side of the side stirring rod (16) is in contact with the inner wall of the reduction tank (1), and the side stirring rod (16) is arranged in a circular shape. The rotation direction of the side stirring rod (16) is consistent with the driving direction of the rotating motor (6), and the rotation direction of the second rotating rod (11) is opposite to the driving direction of the rotating motor (6).
4. The production device of methyl hesperidin dihydrochalcone according to claim 1, characterized in that: The middle portion of the fixed plate (21) is rotatably sleeved on the outer surface of the central stirring rod (18), and a plurality of movable stirring rods (23) are provided at the bottom of one side of the sliding plate (22). The plurality of sliding plates (22) are arranged in a circle on the fixed plate (21), and the movable stirring rods (23) are rotatably sleeved with a plurality of self-rotating stirring blades (24). The plurality of movable stirring rods (23) approach or move away from each other during the sliding of the sliding plate (22).
5. A production device for methyl hesperidin dihydrochalcone according to claim 4, characterized in that, A slider (27) is further provided on one side of the fixed plate (21), and a first rotating rod (28) and a second rotating rod (31) are rotatably mounted on the slider (27), the bottom fixed sleeve of the first rotating rod (28) is provided with a first meshing gear (29) meshing with the first rotating rod (28), the top fixed sleeve of the first rotating rod (28) is provided with a second meshing gear (30), the middle fixed sleeve of the second rotating rod (31) is provided with a third meshing gear (32) meshing with the second meshing gear (30), and the top fixed sleeve of the second rotating rod (31) is provided with a fourth meshing gear (33).
6. The production device of methyl hesperidin dihydrochalcone according to claim 5, characterized in that: A first drive plate (34) and a second drive plate (35) are fixedly sleeved on the middle portion of the second rotating rod (11) from bottom to top. One side of the first drive plate (34) and the second drive plate (35) are both arranged in an arc shape, and a plurality of teeth are arranged on one side of the arc shape. The height of the first drive plate (34) is consistent with the height of the second meshing gear (30), and the height of the second drive plate (35) is consistent with the height of the fourth meshing gear (33).
7. The production device of methyl hesperidin dihydrochalcone according to claim 6, characterized in that: The first rotating rod (28) and the second rotating rod (31) are arranged in a front-rear relationship, and the first driving plate (34) and the second driving plate (35) are arranged in a staggered distribution. The teeth on one side of the first driving plate (34) mesh with the second meshing gear (30) during the rotation process, and the teeth on one side of the second driving plate (35) mesh with the fourth meshing gear (33) during the rotation process.
8. The production device of methyl hesperidin dihydrochalcone according to claim 1, characterized in that: The sliding groove (26) is opened in an arc shape. When the adjusting toothed disc (25) rotates, the positioning block (36) and the sliding plate (22) are pushed to slide horizontally through the arc-shaped sliding groove (26).
9. The production device of methyl hesperidin dihydrochalcone according to claim 1, characterized in that: The outer shell of the reduction tank (1) is configured as a vacuum interlayer, a heating plate is provided on the side of the interlayer of the reduction tank (1) close to the inner wall, a refractive observation mirror (7) is provided on the bottom side of the reduction tank (1), and a feed port (4) and a pressure relief port (5) are provided on the top cover (3).
10. A process for producing methyl hesperidin dihydrochalcone, applied to the production device for methyl hesperidin dihydrochalcone according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Add raw materials, catalyst and solvent into the reduction tank (1), close the top cover (3), and vacuum and heat; S2: Turn on the rotating motor (6), drive the first rotating rod (9) and the second rotating rod (11) to rotate, and drive the stirring assembly to stir; S3: The turbulence component is started, and the adjusting toothed disc (25) drives the sliding plate (22) to move back and forth periodically to achieve radial turbulence stirring; S4: The heating plate continuously provides a constant temperature heat source, and the vacuum interlayer provides thermal insulation to maintain a stable reaction. S5: Monitor the internal liquid level and status to ensure the reaction is safe and controllable; S6: After the reaction is completed, the product is discharged from the bottom and the gas is exhausted, completing the entire reduction process.