A concentrator for processing raw materials for anthocyanidin preparation

Abstract

The present invention relates to the technical field of raw material preparation, and in particular to a concentrator for processing anthocyanin raw materials. It comprises: a concentrating barrel, the outer surface of which is connected to a supporting device, and a sealing cover is detachably installed on the upper end of the concentrating barrel; it also comprises a stirring device, which is connected to the sealing cover, and the stirring device comprises a circular plate installed on the inner wall of the sealing cover, and the circular plate is connected to a stirring mechanism, and an expansion mechanism is arranged on the stirring mechanism. The expansion mechanism and the stirring mechanism used in the present invention cooperate to increase the contact area between the anthocyanin stock solution and the inner wall of the concentrating barrel, and the contact area can be controlled according to the amount of the anthocyanin stock solution, which effectively increases the heating area and evaporation area of ​​the anthocyanin stock solution, and at the same time cooperates with the stirring mechanism to continuously stir the anthocyanin stock solution, ensuring that the anthocyanin stock solution is heated evenly, thereby improving the efficiency of the anthocyanin stock solution concentration.

Description

Technical Field

[0001] The invention relates to the technical field of raw material preparation, and in particular to a concentrator for processing raw materials for preparing anthocyanidins. Background Art

[0002] Anthocyanins are a class of natural pigments belonging to the flavonoid class of compounds. Studies have shown that anthocyanins may help prevent cardiovascular diseases, improve vision, inhibit inflammation, and have a positive effect on the function of the nervous system. In the preparation of anthocyanins, the concentrated extraction of raw materials is the most critical step. Concentrated extraction refers to the process of increasing the concentration of anthocyanins by removing part of the solvent from the extract containing anthocyanins. Common concentrated extraction methods include evaporation concentration technology, membrane separation technology, freeze concentration technology, etc., among which evaporation concentration is the most widely used.

[0003] According to the existing technology, when concentrating anthocyanin stock solution, the extracted stock solution containing anthocyanin is first filtered to remove solid residues to ensure that only liquid enters the evaporator, and then the extracted solution is introduced into the evaporator, and the water therein is evaporated by heating. The evaporated water vapor needs to be converted into liquid water through a condenser and then discharged out of the system. As the water continues to evaporate, the remaining liquid becomes more and more concentrated, and finally the concentrated anthocyanin stock solution is collected. However, during the concentration process of the anthocyanin stock solution in the evaporator, the anthocyanin stock solution can only be stirred, and the contact surface and evaporation area between the anthocyanin stock solution and the heating source cannot be changed, thereby reducing the evaporation efficiency of the anthocyanin stock solution, and the evaporator needs to be cleaned each time after the anthocyanin stock solution is concentrated to prevent the previous anthocyanin stock solution from adhering to the evaporator, thereby reducing the efficiency of the anthocyanin stock solution concentration process. Summary of the invention

[0004] Based on this, it is necessary to provide a concentrator for processing anthocyanin preparation raw materials, aiming to solve the problems caused by the existing technology when concentrating anthocyanin stock solution.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a concentrator for processing anthocyanin preparation raw materials, comprising: a concentrating barrel, the concentrating barrel is an inverted truncated cone structure with an arc-shaped lower end, a supporting device is connected to the outer surface of the concentrating barrel, a sealing cover is detachably installed on the upper end of the concentrating barrel, and a sealing gasket is laid between the concentrating barrel and the sealing cover.

[0006] It also includes a stirring device, which is connected to the sealing cover. The stirring device includes a circular plate installed on the inner wall of the sealing cover, a stirring mechanism is connected to the circular plate, an expansion mechanism is arranged on the stirring mechanism, a scraping mechanism is arranged at the lower end of the circular plate, and a driving mechanism is also connected to the stirring mechanism.

[0007] The expansion mechanism includes a rubber airbag arranged in the concentration barrel, an air intake pipe is installed on the upper end of the rubber airbag and is connected to the rubber airbag, the air intake pipe passes through the sealing cover and is fixedly connected thereto, an air intake pump located outside the sealing cover is installed on the upper end of the air intake pipe, the air intake pump injects air into the rubber airbag through the air intake pipe to expand it, and the expanded rubber airbag is used to change the liquid level of the anthocyanin stock solution.

[0008] The wall scraping mechanism comprises two guide rods symmetrically mounted at the lower end of the circular plate, the two guide rods are commonly connected with a lifting branch chain, and the lifting branch chain is connected with a wall scraping branch chain for scraping off the anthocyanin stock solution remaining on the inner wall of the concentration barrel.

[0009] It also includes a feeding device, which is connected to the sealing cover and is used for inputting anthocyanin stock solution.

[0010] It also includes an air extraction device, which is connected to the sealing cover and is used to extract the air inside the concentration barrel.

[0011] According to an embodiment of the present invention, the stirring mechanism includes a rotating tube that passes through and is rotatably connected to the middle part of the circular plate, the rotating tube is located on the outside of the air intake pipe and the two are concentric, the outer ring surface of the rotating tube is provided with a guide groove located below the circular plate, a stirring rod with an isosceles trapezoidal structure is installed near the lower end of the outer ring surface of the rotating tube, a notch is provided at the upper end of the stirring rod to be fixedly connected to the rotating tube, the four corners of the stirring rod are all arc structures, and a plurality of evenly distributed stirring blades are installed on the outer surface of the stirring rod.

[0012] According to an embodiment of the present invention, the guide groove consists of an annular groove located at the top and a spiral groove located at the bottom, and the annular groove is connected to the spiral groove.

[0013] According to an embodiment of the present invention, the driving mechanism includes a driving motor installed through the sealing cover, a first pulley is installed on the output shaft of the driving motor, a second pulley is installed on the outer ring surface of the rotating tube near the upper end, and the second pulley is connected to the first pulley by a transmission belt.

[0014] According to an embodiment of the present invention, the lifting branch chain includes a lifting tube slidably sleeved on the outer surface of the rotating tube, a guide column is installed on the inner wall of the lifting tube, the guide column is slidably connected to the guide groove, and two strip plates are symmetrically installed on the outer ring surface of the lifting tube about its axis, the strip plates are slidably penetrated and connected with the corresponding guide rods, and a connecting column is installed at the lower end of the strip plate.

[0015] According to an embodiment of the present invention, the wall scraping branch chain includes a connecting ring fixedly connected to the lower ends of the two connecting columns, and a rubber ring is installed on the outer ring surface of the connecting ring.

[0016] According to an embodiment of the present invention, the feeding device includes a feeding pipe installed through the sealing cover, the lower end of the feeding pipe passes through the circular plate, two fixing rods are symmetrically installed on the outer ring surface of the feeding pipe near the lower end, a cylindrical frame is jointly installed on the two fixing rods, and the lower end of the feeding pipe is located in the cylindrical frame.

[0017] According to an embodiment of the present invention, the air extraction device comprises an air extraction pipe installed through the sealing cover, the lower end of the air extraction pipe passes through the circular plate, and an air extraction air pump is installed at the upper end of the air extraction pipe.

[0018] According to an embodiment of the present invention, the supporting device comprises a supporting ring sleeved and installed on the outer surface of the concentrating barrel, and a plurality of supporting rods evenly distributed in the circumferential direction are installed at the lower end of the supporting ring.

[0019] According to an embodiment of the present invention, a discharge pipe with a valve is installed at the lower end of the concentration barrel and is connected thereto, a heating plate is installed near the lower end of the annular barrel wall of the concentration barrel, and an air outlet pipe near the sealing cover is installed on the annular barrel wall of the concentration barrel and is connected thereto.

[0020] In summary, the present invention includes the following beneficial effects: 1. The expansion mechanism and the stirring mechanism used in the present invention cooperate to increase the contact area between the anthocyanin stock solution and the inner wall of the concentration barrel, and the contact area can be controlled according to the amount of the anthocyanin stock solution, which effectively increases the heating area and evaporation area of ​​the anthocyanin stock solution. At the same time, the continuous stirring of the anthocyanin stock solution by the stirring mechanism ensures that the anthocyanin stock solution is heated evenly, thereby improving the efficiency of the anthocyanin stock solution concentration.

[0021] 2. The scraping mechanism used in the present invention cooperates with the driving mechanism to scrape off the anthocyanin stock solution remaining on the inner wall of the concentration barrel, thereby preventing the residual anthocyanin stock solution from being in the heating range for a long time and being charred and attached to the inner wall of the concentration barrel, thereby avoiding affecting the subsequent heating of the anthocyanin stock solution. At the same time, the number of times the inside of the concentration barrel is cleaned can be reduced, ensuring the continuity of the anthocyanin stock solution treatment work and improving the efficiency of the anthocyanin stock solution treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the three-dimensional structure of the present invention from a first viewing angle is shown.

[0024] Figure 2 A schematic diagram of the second viewing angle stereoscopic structure of the present invention is shown.

[0025] Figure 3 A front view of the present invention is shown.

[0026] Figure 4 A left side view of the present invention is shown.

[0027] Figure 5 Shows Figure 3 Sectional view of AA.

[0028] Figure 6 Shows Figure 5 Magnified view of the middle N region.

[0029] Figure 7 Shows Figure 4 Cross-sectional view of BB.

[0030] Figure 8 The schematic diagram of the structure of the rotating tube and the guide groove of the present invention is shown.

[0031] The above drawings include the following reference numerals: 1. concentration barrel; 11. discharge pipe; 12. heating plate; 13. air outlet pipe; 2. support device; 21. support ring; 22. support rod; 3. sealing cover; 4. stirring device; 41. circular plate; 42. stirring mechanism; 421. rotating tube; 422. guide groove; 423. stirring rod; 424. stirring blade; 43. expansion mechanism; 431. rubber airbag; 432. air inlet pipe; 433. air inlet pump; 44. scraping mechanism; 441. Guide rod; 442, lifting branch chain; 4421, lifting tube; 4422, guide column; 4423, strip plate; 4424, connecting column; 443, scraper branch chain; 4431, connecting ring; 4432, rubber ring; 45, driving mechanism; 451, driving motor; 452, first pulley; 453, second pulley; 454, conveyor belt; 5, feeding device; 51, feeding tube; 52, fixing rod; 53, cylindrical frame; 6, exhaust device; 61, exhaust tube; 62, exhaust air pump. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0033] See also Figure 1-Figure 4A concentrator for processing anthocyanin preparation raw materials includes a concentrating barrel 1, which is an inverted truncated cone structure with an arc-shaped lower end. A supporting device 2 is connected to the outer surface of the concentrating barrel 1. A sealing cover 3 is detachably installed on the upper end of the concentrating barrel 1, and a sealing gasket is laid between the concentrating barrel 1 and the sealing cover 3.

[0034] See also Figure 1 and Figure 2 The supporting device 2 includes a supporting ring 21 sleeved and installed on the outer surface of the concentration barrel 1, and a plurality of supporting rods 22 evenly distributed in the circumferential direction are installed at the lower end of the supporting ring 21.

[0035] During the specific work, before processing, the concentration barrel 1 is placed in the working position and fixed through the support ring 21 and multiple support rods 22, and then the sealing cover 3 is connected to the concentration barrel 1 by bolt installation to form a sealed space in the concentration barrel 1.

[0036] See also Figure 1 , Figure 5 and Figure 7 The anthocyanin preparation raw material processing concentrator also includes a stirring device 4, which is connected to the sealing cover 3, and the stirring device 4 includes a circular plate 41 installed on the inner wall of the sealing cover 3.

[0037] See also Figure 1 and Figure 7 The concentrator for processing anthocyanin raw materials also includes a feeding device 5, which is connected to the sealing cover 3 and is used to input anthocyanin stock solution. The feeding device 5 includes a feeding pipe 51 installed through the sealing cover 3, and two fixing rods 52 are symmetrically installed near the lower end of the outer ring surface of the feeding pipe 51. A cylindrical frame 53 is commonly installed on the two fixing rods 52, and the lower end of the feeding pipe 51 is located in the cylindrical frame 53.

[0038] See also Figure 1 , Figure 5 and Figure 7 The concentrator for processing anthocyanin raw materials also includes an exhaust device 6, which is connected to the sealing cover 3 and is used to extract the air inside the concentration barrel 1. The exhaust device 6 includes an exhaust pipe 61 installed on the sealing cover 3, the lower end of the exhaust pipe 61 passes through the circular plate 41, and the upper end of the exhaust pipe 61 is installed with an exhaust air pump 62.

[0039] During the specific operation, during the installation of the sealing cover 3, the sealing cover 3 drives the lower end of the exhaust pipe 61 to move into the concentration barrel 1, and at the same time, the sealing cover 3 drives the lower end of the feed pipe 51 to move into the concentration barrel 1, and then the feed pipe 51 is connected to the external device containing anthocyanin stock solution. The external device containing anthocyanin stock solution is equipped with a hydraulic pump, and the feed pipe 51 is equipped with a valve for controlling opening and closing. After the sealing cover 3 is installed, the exhaust air pump 62 is connected to the existing power supply, and the exhaust air pump 62 is started. The exhaust air pump 62 extracts the air inside the concentration barrel 1 through the exhaust pipe 61, so that a vacuum environment is gradually formed inside the concentration barrel 1, thereby reducing the boiling point of the concentrated anthocyanin stock solution and avoiding the phenomenon of high-temperature decomposition of the anthocyanin stock solution. As the air inside the concentration barrel 1 decreases, the external hydraulic pump transports the anthocyanin stock solution in the container to the feed pipe 51, and the discharge end of the feed pipe 51 injects the anthocyanin stock solution into the cylindrical frame 53. The anthocyanin stock solution in the cylindrical frame 53 gradually increases and overflows and falls into the concentration barrel 1. The cylindrical frame 53 blocks the anthocyanin stock solution flowing out of the feed pipe 51, which can effectively ensure that the inside of the feed pipe 51 is in a filled state, and avoid the air inside the feed pipe 51 from affecting the vacuum environment in the concentration barrel 1, ensuring that the processing environment of the anthocyanin stock solution remains consistent. When a certain amount of anthocyanin stock solution is injected into the concentration barrel 1, the external hydraulic pump is turned off, and the valve on the feed pipe 51 is closed, and then the vacuum pump 62 is turned off.

[0040] See also Figure 1 , Figure 5 and Figure 7 The circular plate 41 is connected to a stirring mechanism 42 , an expansion mechanism 43 is provided on the stirring mechanism 42 , and a driving mechanism 45 is also connected to the stirring mechanism 42 .

[0041] See also Figure 5 , Figure 6 and Figure 7 The expansion mechanism 43 includes a rubber airbag 431 arranged in the concentration barrel 1, and an air intake pipe 432 is installed on the upper end of the rubber airbag 431 and is connected to the rubber airbag 431. The air intake pipe 432 passes through the sealing cover 3 and is fixedly connected thereto. An air intake pump 433 located outside the sealing cover 3 is installed on the upper end of the air intake pipe 432. The air intake pump 433 injects air into the rubber airbag 431 through the air intake pipe 432 to expand it, and the expanded rubber airbag 431 is used to change the liquid level of the anthocyanin stock solution.

[0042] During specific operation, the air intake pump 433 is connected to an external power source. After the anthocyanin stock solution falls into the concentration barrel 1, the air intake pump 433 is started. The air intake pump 433 injects air into the rubber airbag 431, and the rubber airbag 431 is inflated. The inflated rubber airbag 431 raises the liquid level of the anthocyanin stock solution in the concentration barrel 1 and increases the contact area between the anthocyanin stock solution and the inner wall of the concentration barrel 1, effectively increasing the heating area and evaporation area of ​​the anthocyanin stock solution, thereby improving the efficiency of the anthocyanin stock solution concentration.

[0043] See also Figure 5-Figure 8 The stirring mechanism 42 includes a rotating tube 421 that passes through and is rotatably connected to the middle part of the circular plate 41. The outer ring surface of the rotating tube 421 is provided with a guide groove 422 located below the circular plate 41. The rotating tube 421 is located on the outside of the air inlet pipe 432 and the two are concentric. The guide groove 422 consists of an annular groove located at the top and a spiral groove located at the bottom. The annular groove is connected to the spiral groove. A stirring rod 423 with an isosceles trapezoidal structure is installed near the lower end of the outer ring surface of the rotating tube 421. A notch fixedly connected to the rotating tube 421 is provided at the upper end of the stirring rod 423. The four corners of the stirring rod 423 are all arc-shaped, and a plurality of evenly distributed stirring blades 424 are installed on the outer surface of the stirring rod 423.

[0044] See also Figure 1 , Figure 5 and Figure 7 The driving mechanism 45 includes a driving motor 451 installed through the sealing cover 3, a first pulley 452 is installed on the output shaft of the driving motor 451, a second pulley 453 is installed on the outer ring surface of the rotating tube 421 near the upper end, and the second pulley 453 is connected to the first pulley 452 through a transmission belt 454.

[0045] During specific operation, the driving motor 451 is initially connected to an external power source. After the rubber airbag 431 is inflated, the driving motor 451 is started. The driving motor 451 drives the first pulley 452 to rotate. The first pulley 452 drives the second pulley 453 to rotate through the transmission belt 454. The second pulley 453 drives the rotating tube 421 to rotate. The rotating tube 421 drives the multiple stirring blades 424 to rotate through the stirring rod 423. The multiple stirring blades 424 stir the anthocyanin stock solution to ensure that the anthocyanin stock solution is evenly heated.

[0046] See also Figure 5 and Figure 7 A discharge pipe 11 with a valve is installed at the lower end of the concentration barrel 1 and is connected to the discharge pipe 11. A heating plate 12 is installed near the lower end of the annular barrel wall of the concentration barrel 1. The heating plate 12 is an existing electric heating component. An air outlet pipe 13 near the sealing cover 3 is installed on the annular barrel wall of the concentration barrel 1 and is connected to the discharge pipe 11.

[0047] During specific operation, the valve on the discharge pipe 11 is initially in a closed state, and the air outlet pipe 13 is connected to the existing condensing equipment. After the anthocyanin stock solution enters the concentration barrel 1, the heating plate 12 is started, and the heating plate 12 heats the anthocyanin stock solution in the concentration barrel 1. The steam generated by the heating enters the condensing equipment through the air outlet pipe 13 for condensation.

[0048] See also Figure 5-Figure 7 A wall scraping mechanism 44 is provided at the lower end of the circular plate 41, and the wall scraping mechanism 44 includes two guide rods 441 symmetrically installed at the lower end of the circular plate 41 about the axis of the rotating tube 421, and the two guide rods 441 are commonly connected to a lifting branch chain 442, and the lifting branch chain 442 is connected to a wall scraping branch chain 443.

[0049] See also Figure 5-Figure 7 The lifting branch chain 442 includes a lifting tube 4421 slidably mounted on the outer surface of the rotating tube 421, a guide column 4422 is installed on the inner wall of the lifting tube 4421, and the guide column 4422 is slidably connected to the guide groove 422. Two strip plates 4423 are symmetrically installed on the outer ring surface of the lifting tube 4421 about its axis. The strip plates 4423 are slidably penetrated and connected with the corresponding guide rods 441, and a connecting column 4424 is installed at the lower end of the strip plate 4423.

[0050] See also Figure 5-Figure 7 The wall scraping branch chain 443 includes a connecting ring 4431 fixedly connected to the lower ends of the two connecting columns 4424, and a rubber ring 4432 is installed on the outer ring surface of the connecting ring 4431.

[0051] See also Figure 1-Figure 8 In specific operation, when the rotating tube 421 drives the stirring rod 423 and the stirring blade 424 to stir the anthocyanin stock solution, the guide groove 422 on the rotating tube 421 guides the guide column 4422, and the rotation direction of the rotating tube 421 is the same as the spiral direction of the spiral groove of the guide groove 422 (such as Figure 8As shown, the spiral groove of the guide groove 422 rotates counterclockwise); when the guide post 4422 moves to the connecting point of the spiral groove of the guide groove 422 and the annular groove, the spiral groove of the guide groove 422 guides the guide post 4422 upward to ensure that the annular groove of the guide groove 422 is always in contact with the guide post 4422, and the position of the lifting tube 4421 remains unchanged. After the anthocyanin stock solution in the concentration barrel 1 is concentrated, the valve on the discharge pipe 11 is opened, and the concentrated anthocyanin stock solution is discharged from the discharge pipe 11 and falls into the existing collection container, and then the drive motor 451 is started, and the drive motor 451 is driven. The rotating tube 421 is driven to rotate in the reverse direction. When the guide column 4422 moves to the connecting point of the spiral groove and the annular groove of the guide groove 422, the spiral groove of the guide groove 422 no longer guides the guide column 4422 upward. The guide column 4422 moves downward by its own gravity and enters the spiral groove of the guide groove 422. The rotating tube 421 drives the spiral groove of the guide groove 422 to guide the guide column 4422 downward. The guide column 4422 is forced to move downward with the lifting tube 4421. The lifting tube 4421 drives the two connecting columns 4424 to move downward through the two strip plates 4423. The two connecting columns 4424 drive the connecting ring 4431 to move downward, and the connecting ring 4431 drives the rubber ring 4432 to scrape the anthocyanin stock solution remaining on the inner wall of the concentration barrel 1 from top to bottom, and the remaining anthocyanin stock solution moves to the bottom of the concentration barrel 1 to ensure that it is separated from the heating range of the heating plate 12, thereby preventing the remaining anthocyanin stock solution from being coked and attached to the inner wall of the concentration barrel 1 due to being in the heating range for a long time, thereby preventing the attachments on the inner wall of the concentration barrel 1 from affecting the subsequent heating of the anthocyanin stock solution, and at the same time, the number of times the inside of the concentration barrel 1 is cleaned can be reduced, ensuring the anthocyanin stock solution. The continuity of the anthocyanin stock solution processing work improves the efficiency of the anthocyanin stock solution processing. When the concentrated anthocyanin stock solution falls into the collecting container, the driving motor 451 drives the rotating tube 421 to rotate forward again, the guide groove 422 guides the guide column 4422, and the lifting tube 4421 drives the two connecting columns 4424 to reset upward through the two strip plates 4423, and closes the valve on the discharge pipe 11, and then repeats the previous step of anthocyanin stock solution entering the concentration barrel 1, and continuously concentrates a large amount of anthocyanin stock solution until a large amount of anthocyanin stock solution is processed and the work is completed.

[0052] It should be noted that the rubber ring 4432, the rubber airbag 431, and the conveyor belt 454 are all made of materials with temperature resistance, chemical resistance, and vacuum resistance.

[0053] In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "top", "bottom", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0054] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" 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, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A concentrator for processing raw materials for anthocyanidin preparation, characterized in that: The invention comprises a concentration barrel (1), wherein the concentration barrel (1) is an inverted truncated cone structure with an arc-shaped lower end, a support device (2) is connected to the outer surface of the concentration barrel (1), and a sealing cover (3) is detachably mounted on the upper end of the concentration barrel (1); a stirring device (4) connected to the sealing cover (3), the stirring device (4) comprising a circular plate (41) mounted on the inner wall of the sealing cover (3), the circular plate (41) being connected to a stirring mechanism (42), the stirring mechanism (42) being provided with an expansion mechanism (43), a wall scraping mechanism (44) being provided at the lower end of the circular plate (41), and the stirring mechanism (42) being further connected to a driving mechanism (45); The expansion mechanism (43) comprises a rubber airbag (431) arranged in the concentration barrel (1); an air intake pipe (432) is installed on the upper end of the rubber airbag (431) and is connected to the rubber airbag; the air intake pipe (432) passes through the sealing cover (3) and is fixedly connected thereto; an air intake pump (433) located outside the sealing cover (3) is installed on the upper end of the air intake pipe (432); The air intake pump (433) injects air into the rubber airbag (431) through the air intake pipe (432) to expand the rubber airbag (431), and the liquid level of the anthocyanin stock solution is changed by using the expanded rubber airbag (431); The wall scraping mechanism (44) comprises two guide rods (441) symmetrically mounted on the lower end of the circular plate (41), the two guide rods (441) being commonly connected to a lifting branch chain (442), and the lifting branch chain (442) being connected to a wall scraping branch chain (443) for scraping off the anthocyanin stock solution remaining on the inner wall of the concentration barrel (1); A feeding device (5), connected to the sealing cover (3) and used for inputting anthocyanin raw materials; An air extraction device (6), connected to the sealing cover (3) and used to extract air from the interior of the concentration barrel (1); The stirring mechanism (42) comprises a rotating tube (421) penetrating through and rotatably connected to the middle of the circular plate (41); the rotating tube (421) is located outside the air inlet pipe (432) and the two are concentric; the outer ring surface of the rotating tube (421) is provided with a guide groove (422) located below the circular plate (41); a stirring rod (423) with an isosceles trapezoidal structure is installed near the lower end of the outer ring surface of the rotating tube (421); a notch fixedly connected to the rotating tube (421) is provided at the upper end of the stirring rod (423); the four corners of the stirring rod (423) are all arc structures; and a plurality of evenly distributed stirring blades (424) are installed on the outer surface of the stirring rod (423); The guide groove (422) is composed of an annular groove located at the top and a spiral groove located at the bottom, and the annular groove is connected to the spiral groove; The lifting branch chain (442) comprises a lifting tube (4421) slidably sleeved on the outer surface of the rotating tube (421), a guide column (4422) is installed on the inner wall of the lifting tube (4421), the guide column (4422) is slidably connected with the guide groove (422), the outer ring surface of the lifting tube (4421) is symmetrically installed with two strip plates (4423) about its axis, the strip plates (4423) are slidably penetrated and connected with the corresponding guide rods (441), and a connecting column (4424) is installed at the lower end of the strip plate (4423); The feeding device (5) comprises a feeding pipe (51) which is installed through the sealing cover (3), the lower end of the feeding pipe (51) passes through the circular plate (41), two fixing rods (52) are symmetrically installed on the outer ring surface of the feeding pipe (51) near the lower end, a cylindrical frame (53) is installed on the two fixing rods (52), and the lower end of the feeding pipe (51) is located in the cylindrical frame (53).

2. The concentrator for processing raw materials for anthocyanidin preparation according to claim 1, characterized in that: The driving mechanism (45) comprises a driving motor (451) installed through the sealing cover (3); a first pulley (452) is installed on the output shaft of the driving motor (451); a second pulley (453) is installed on the outer ring surface of the rotating tube (421) near the upper end; the second pulley (453) is connected to the first pulley (452) via a transmission belt (454).

3. The concentrator for processing raw materials for anthocyanidin preparation according to claim 1, characterized in that: The wall scraping branch chain (443) comprises a connecting ring (4431) fixedly connected to the lower ends of the two connecting columns (4424), and a rubber ring (4432) is installed on the outer ring surface of the connecting ring (4431).

4. The concentrator for processing raw materials for preparing anthocyanidins according to claim 1, characterized in that: The air extraction device (6) comprises an air extraction pipe (61) which is installed through the sealing cover (3); the lower end of the air extraction pipe (61) passes through the circular plate (41); and an air extraction air pump (62) is installed at the upper end of the air extraction pipe (61).

5. The concentrator for processing raw materials for anthocyanidin preparation according to claim 1, characterized in that: The support device (2) comprises a support ring (21) sleeved and mounted on the outer surface of the concentration barrel (1), and a plurality of support rods (22) evenly distributed in the circumferential direction are mounted on the lower end of the support ring (21).

6. The concentrator for processing raw materials for preparing anthocyanidins according to claim 1, characterized in that: A discharge pipe (11) with a valve is installed at the lower end of the concentration barrel (1) and is connected thereto; a heating plate (12) is installed inside the annular barrel wall of the concentration barrel (1) near the lower end; and an air outlet pipe (13) is installed on the annular barrel wall of the concentration barrel (1) and is connected thereto, near the sealing cover (3).

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