Natural pigment extraction equipment based on freeze-dried Chinese wolfberry fruits

Abstract

The invention relates to the technical field of extraction, in particular to natural pigment extraction equipment based on freeze-dried Chinese wolfberry fruits. The device comprises a pigment extraction tank, a driving motor is fixedly mounted at the top of the pigment extraction tank, and a mixing mechanism is arranged in the pigment extraction tank. According to the screening mechanism, through a rotating cylinder and a screening plate, crushed Chinese wolfberries are evenly thrown in a rotating and scattering mode, raw material accumulation is prevented, the Chinese wolfberries are dynamically screened and classified, the consistency of the material granularity is ensured, and the effect of mixing the Chinese wolfberries through stirring blades is further improved through even throwing of the Chinese wolfberries; meanwhile, the cleaning brush cleans residual Chinese wolfberry fruits on the screening plate in the rotating process, the residual Chinese wolfberry fruits on the screening plate are timely cleaned, screening holes can be prevented from being blocked, it is ensured that dynamic screening and grading operation of the screening mechanism on Chinese wolfberry fruit raw materials is continuously and efficiently conducted, and the stable screening function enables the Chinese wolfberry fruit materials entering the pigment extraction link to be consistent in granularity; the contact between the medlar and the solvent is more uniform.

Description

Technical Field

[0001] The invention relates to the technical field of powder spraying, in particular to natural pigment extraction equipment based on freeze-dried wolfberries. Background Art

[0002] The natural pigment extraction equipment based on freeze-dried wolfberry refers to a combination of professional equipment specifically used to obtain natural pigments from freeze-dried wolfberry. Through a series of physical and chemical processes, the pigment components in wolfberry are extracted, separated, purified and concentrated. This equipment utilizes the characteristics of freeze-dried wolfberry that is dried at low temperature and the cell structure is preserved. It can extract the natural pigments more efficiently, while minimizing the degradation and deterioration of the pigments during the extraction process, so as to obtain high-purity, high-quality natural pigment products to meet the demand for natural pigments in the food, cosmetics, pharmaceutical and other industries.

[0003] In the existing wolfberry pigment extraction technology, the equipment mostly uses static screens to screen wolfberries. However, this method has significant disadvantages. Wolfberry particles are very easy to accumulate and adhere on the screen, causing the screen holes to be blocked, seriously weakening the screening effect; the problem of uneven screening leads to large differences in the size of wolfberry particles in different batches or regions, making it difficult to achieve uniformity in the subsequent mixing and extraction process, which in turn affects the efficiency and quality of pigment extraction. Moreover, in the process of mixing wolfberries and solvents to extract pigments, pigments are very easy to remain on the inner wall of the storage container, which not only reduces the total amount of pigment extraction, but also has a negative impact on the purity of the secondary extraction, resulting in a waste of raw material resources; if the residual pigment is not cleaned in time, it may also cause cross contamination, greatly increasing the difficulty of equipment cleaning and maintenance costs. In view of this, we propose a natural pigment extraction equipment based on freeze-dried wolfberries. Summary of the Invention

[0004] The purpose of the present invention is to provide a natural pigment extraction device based on freeze-dried wolfberry, so as to solve the problem that the existing wolfberry pigment extraction technology proposed in the above background technology adopts static sieve screening, which has the problems of easy clogging of sieve holes and uneven screening, resulting in uneven subsequent mixing and extraction, affecting efficiency and quality. At the same time, the pigment is easy to remain on the inner wall of the storage container, reducing the extraction amount and secondary extraction purity, and also causing cross contamination, increasing cleaning and maintenance costs.

[0005] To achieve the above objectives, the present invention provides a natural pigment extraction device based on freeze-dried wolfberry, comprising a pigment extraction tank, a drive motor fixedly mounted on the top of the pigment extraction tank, and a mixing mechanism disposed inside the pigment extraction tank. The mixing mechanism utilizes a multi-degree-of-freedom transmission system to implement centrifugal motion. During the turbulent dissolution of the wolfberry and the solvent medium, an adaptive scraping component is synchronously activated to perform a gradient pressure contact-type obstacle removal operation on the inner wall surface of the pigment extraction tank, thereby achieving dynamic updating of the contact interface and continuous stripping of the material attachment layer.

[0006] The interior of the pigment extraction tank is also provided with a screening mechanism, which adopts a rotary dynamic dispersion method to evenly sprinkle the crushed wolfberries into the pigment extraction tank. During this process, the screening mechanism relies on the self-driven screening structure to perform dynamic screening and grading operations on the wolfberry raw materials, and at the same time uses the integrated clearing structure to synchronously scrape and clean the screening holes.

[0007] The beneficial effects of the present invention are:

[0008] 1. In the present invention, the screening mechanism evenly spreads the crushed wolfberries in a rotating distribution manner through the rotating drum and the screening plate to prevent the accumulation of raw materials, and dynamically screens and grades the wolfberries to ensure the uniform particle size of the materials. In addition, the uniform spreading of the wolfberries further improves the effect of the mixing blades mixing the wolfberries.

[0009] At the same time, the cleaning brush cleans the residual wolfberries on the screening plate during the rotation process. Timely removal of the residual wolfberries on the screening plate can avoid clogging of the screen holes and ensure that the dynamic screening and grading operations of the wolfberry raw materials by the screening mechanism are continuously and efficiently carried out. The stable screening function ensures that the particle size of the wolfberry materials entering the pigment extraction link is consistent, making the contact between the wolfberry and the solvent more uniform, thereby improving the pigment extraction effect and product quality stability.

[0010] 2. In the mixing mechanism of the present invention, the stirring rod cooperates with the stirring blade to fully mix the wolfberry and the solvent, accelerating the dissolution and diffusion of the pigment; and the arc-shaped structure of the scraper fits the inner wall of the tank, scraping off the attached pigment and material during the mixing process, avoiding residue and reducing the extraction amount, reducing tank corrosion, and extending the life of the equipment.

[0011] As a further improvement of the present technical solution, a solvent input pipe is connected to one side of the pigment extraction tank, and a wolfberry introduction pipe is connected to the other side of the pigment extraction tank. The pigment extraction tank is trapezoidal in shape as a whole and is used to output the extracted pigment.

[0012] The beneficial effect of adopting the above-mentioned further scheme is that the overall trapezoidal design of the pigment extraction tank is conducive to the smooth discharge of the pigment after the extraction is completed, reduces the residual pigment in the tank, facilitates the collection of the pigment, increases the pigment extraction amount, and also reduces the pollution of the residual pigment to the tank body, facilitating the subsequent cleaning and maintenance of the tank body.

[0013] As a further improvement of the present technical solution, the mixing mechanism includes a stirring rod fixedly connected to the output end of the driving motor, the outer wall of the bottom end of the stirring rod is fixedly connected to a stirring blade in a circular array, and the outer wall of the stirring rod close to the stirring blade is fixedly connected to a scraper, the top of the stirring rod passes through the top of the pigment extraction tank and is connected to the driving motor, and is rotatably connected to the pigment extraction tank, the middle part of the scraper is hollow cylindrical, used to connect to the stirring rod, and both sides of the scraper are arc-shaped and adapted to the inner wall of the pigment extraction tank.

[0014] The beneficial effect of adopting the above-mentioned further scheme is that the scraping piece has arc-shaped sides and is adapted to the inner wall of the pigment extraction tank, which can effectively scrape off the pigment and material attached to the inner wall of the tank, avoid residue and reduce the extraction amount, reduce corrosion to the tank body, extend the service life of the equipment, and create good conditions for secondary extraction.

[0015] As a further improvement of the present technical solution, the screening mechanism includes a support frame rotatably connected to the stirring rod, one end of the bottom of the support frame is fixedly connected to a cleaning brush, and the support frame is rotatably connected to a rotating drum, the bottom of the rotating drum is fixedly connected to a screening plate, the support frame includes a horizontal plate fixedly connected to the pigment extraction tank, one end of the horizontal plate is fixedly connected to a sleeve, the inner wall of the sleeve is rotatably connected to the stirring rod, and the outer wall of the bottom end of the sleeve is fixedly connected to the cleaning brush, for ensuring the stability of the cleaning brush when cleaning impurities, the top of the rotating drum is fixedly connected to a fixed block, the fixed block is fixedly connected to the outer wall of the stirring rod near one end of the rotating drum, for ensuring that the rotating drum and the stirring rod rotate synchronously, the bottom of the rotating drum is rotatably connected to a stabilizing disk, and the outer wall of the stabilizing disk is connected to the inner wall of the pigment extraction tank.

[0016] The beneficial effect of adopting the above further scheme is that

[0017] The rotating drum and screening plate rotate synchronously to dynamically screen and grade the wolfberry raw materials, ensuring that the particle size of the materials entering the extraction stage is consistent. The rotating dispersion method allows the crushed wolfberries to be evenly scattered into the tank, avoiding raw material accumulation and providing a uniformly distributed material basis for subsequent mixing.

[0018] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure assembly of the present invention;

[0020] Figure 2 It is an overall cross-sectional view of the present invention;

[0021] Figure 3This is a cross-sectional view of the pigment extraction tank structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the mixing mechanism of the present invention;

[0023] Figure 5 It is a schematic diagram of the coordination relationship between the screening mechanism and the mixing mechanism of the present invention.

[0024] The meaning of each number in the figure is:

[0025] 100. Pigment extraction tank;

[0026] 200, drive motor;

[0027] 300, mixing mechanism; 310, stirring rod; 311, stirring blade; 312, scraping member;

[0028] 400, screening mechanism; 410, support frame; 4101, sleeve; 411, cleaning brush; 412, rotating cylinder; 413, screening plate; 4121, stabilizing plate;

[0029] 500, wolfberry introduction tube;

[0030] 600. Solvent inlet pipe. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe 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 ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] The present invention provides the following preferred embodiments

[0033] See also Figure 1-Figure 5 As shown, this embodiment provides a natural pigment extraction device based on freeze-dried wolfberry, including a pigment extraction tank 100, which is used to provide an operating platform for mixing wolfberry and solvent, so as to facilitate the extraction of pigments from wolfberry. A drive motor 200 is fixedly installed on the top of the pigment extraction tank 100, and a mixing mechanism 300 is provided inside the pigment extraction tank 100. The mixing mechanism 300 relies on a multi-degree-of-freedom transmission system to implement centrifugal motion. During the turbulent dissolution of wolfberry and the solvent medium, an adaptive scraping component is synchronously started to perform a gradient pressure contact clearance operation on the inner cavity wall of the pigment extraction tank 100, thereby realizing the dynamic update of the contact interface and the continuous stripping of the material attachment layer.

[0034] A screening mechanism 400 is also provided inside the pigment extraction tank 100. The screening mechanism 400 adopts a rotary dynamic dispersion method to evenly sprinkle the crushed wolfberries into the pigment extraction tank 100. During this process, the screening mechanism 400 relies on a self-driven screening structure to perform dynamic screening and grading operations on the wolfberry raw materials, and at the same time uses an integrated clearing structure to synchronously scrape and clean the screening holes.

[0035] Therefore, based on the above features, the improvements of the present invention are described in detail:

[0036] At present, when natural pigment extraction equipment based on freeze-dried wolfberry is in operation, most of them mix the crushed wolfberry with the solvent by setting a stirring rod. However, in actual operation, the wolfberry pigment is very easy to adhere to the inner wall of the storage container, which not only leads to a decrease in the amount of pigment extracted, but also has an adverse effect on the secondary extraction of the wolfberry pigment, thereby affecting the overall extraction efficiency and quality. Therefore, the wolfberry and the solvent are mixed by rotating the mixing mechanism 300, and the interior of the pigment extraction tank 100 is scraped simultaneously. The rotation of the mixing mechanism 300 can make the wolfberry and the solvent fully contact and evenly mix, allowing the solvent to better penetrate into the wolfberry cells, accelerating the dissolution and diffusion of the pigment, thereby improving the extraction efficiency of the pigment. At the same time, scraping the interior of the pigment extraction tank 100 can prevent the wolfberry pigment from adhering to the inner wall of the tank, avoid the reduction in extraction amount due to pigment adhesion, and ensure that the pigment can be fully extracted.

[0037] At the same time, if the wolfberry raw material is directly transported to the inside of the pigment extraction tank 100, the raw material will be concentrated into the tank body under the action of the unidirectional transport force, forming an accumulation in a certain area, and then slowly diffused to the surroundings. The raw material is concentrated in one place, which will lead to inconsistent contact area and contact time with the solvent. The part that contacts the solvent first may be extracted more fully, while the part that diffuses later is relatively insufficiently extracted, making the overall extraction process uneven, affecting the consistency and stability of the pigment extraction. Therefore, the screening mechanism 400 adopts a rotating dynamic dispersion method to evenly sprinkle the crushed wolfberries into the pigment extraction tank 100. On the one hand, it changes the accumulation phenomenon caused by traditional unidirectional transportation, so that the crushed wolfberries are radially and evenly dispersed in the internal space of the pigment extraction tank 100 under the synergistic action of centrifugal force and mechanical movement, avoiding local aggregation of raw materials, creating good conditions for full contact between wolfberries and solvent, and reducing the difference in extraction efficiency caused by uneven distribution of raw materials.

[0038] On the other hand, the crushed wolfberries can be screened through the screening holes in the screening mechanism 400 to remove oversized or undersized particles, making the raw material particle size more uniform. This optimizes the contact area and permeation path between the solvent and the wolfberries, avoids the problems of insufficient extraction of large particles and clogging of the filter by small particles, and significantly improves the pigment dissolution rate and extraction rate.

[0039] Since the method of screening first and then scattering is adopted, the wolfberry particles are very likely to clog the screening holes, which can easily interfere with the screening and scattering operations of the wolfberries. Therefore, in order to solve this problem, the screening mechanism 400 adopts a synchronous operation mode. In the process of scattering the wolfberries, the screening holes are scraped and cleaned in real time with the help of an integrated clearing structure, and the blockages in the screening holes are removed in time, which can enable the wolfberries to pass through the screening smoothly and be scattered evenly, preventing problems such as reduced screening efficiency and uneven scattering caused by blockage, ensuring that the wolfberries are in full contact with the solvent, and further improving the pigment extraction efficiency.

[0040] On the basis of the above, the specific structure is disclosed in detail:

[0041] In order to ensure that the solvent and the crushed wolfberries flow into the pigment extraction tank 100, the pigment extraction tank 100 is disclosed in detail, such as Figure 2 As shown, one side of the pigment extraction tank 100 is connected to a solvent input pipe 600, and the other side of the pigment extraction tank 100 is connected to a wolfberry introduction pipe 500. The pigment extraction tank 100 is trapezoidal in shape as a whole, which is used to output the extracted pigment, ensuring the smoothness of the pigment output. Therefore, when wolfberries and solvents need to be introduced, the crushed wolfberries are first introduced into the screening mechanism 400 through the wolfberry introduction pipe 500, and then the solvent for extracting the pigment is input into the pigment extraction tank 100 through the solvent input pipe 600.

[0042] Further, in order to mix and stir the wolfberry and the solvent and scrape the inner wall of the pigment extraction tank 100, the mixing mechanism 300 is disclosed in detail, such as Figure 2 and- Figure 4 As shown, the mixing mechanism 300 includes a stirring rod 310 fixedly connected to the output end of the driving motor 200, and the outer wall of the bottom end of the stirring rod 310 is fixedly connected to a stirring blade 311 in a circumferential array, and the outer wall of the stirring rod 310 close to the stirring blade 311 is fixedly connected to a scraper 312. Therefore, when it is necessary to stir the wolfberry and the solvent, the driving motor 200 is started, and the stirring rod 310 is driven by the driving motor 200 to rotate. While the stirring rod 310 drives the stirring blade 311 to rotate, it will synchronously drive the scraper 312 to rotate inside the pigment extraction tank 100, which is beneficial to uniformly mixing the wolfberry and the solvent, and is also beneficial to cleaning the pigment remaining on the inner wall of the pigment extraction tank 100.

[0043] Specifically, the top end of the stirring rod 310 passes through the top of the pigment extraction tank 100 and is connected to the drive motor 200, and is rotatably connected to the pigment extraction tank 100. The middle part of the scraper 312 is a hollow columnar shape, which is used to connect with the stirring rod 310, and both sides of the scraper 312 are arc-shaped and adapted to the inner wall of the pigment extraction tank 100. The arc-shaped structure of the scraper 312 can fit tightly to the arc-shaped inner wall of the pigment extraction tank 100, and scrape off wolfberry residues, pigment residues and other substances attached to the inner wall of the tank without dead angles, avoiding pigment loss caused by residue, thereby increasing the amount of pigment extracted. Compared with ordinary flat scrapers, the arc-shaped scraper can penetrate into the corners of the tank and other areas prone to residue, ensuring the cleanliness of the inner wall of the tank, and providing good conditions for subsequent extraction or cleaning processes.

[0044] Then, to achieve uniform spreading of wolfberries, the screening mechanism 400 is further disclosed, such as Figure 5 As shown, the screening mechanism 400 includes a support frame 410 rotatably connected to the stirring rod 310, one end of the bottom of the support frame 410 is fixedly connected to a cleaning brush 411, and a rotating drum 412 is rotatably connected to the support frame 410, and a screening plate 413 is fixedly connected to the bottom of the rotating drum 412. Therefore, when it is necessary to evenly sprinkle the wolfberries into the pigment extraction tank 100, the rotating drum 412 is driven to rotate synchronously by the rotation of the stirring rod 310. Under the rotation of the rotating drum 412, the wolfberries are radially and evenly dispersed in the internal space of the pigment extraction tank 100. The even dispersion maximizes the contact area between the wolfberries and the extraction solvent, thereby increasing the amount of wolfberry particles that can be fully exposed to the solvent. The possibility of the solvent in the agent is increased, and the solvent can penetrate into the inside of the wolfberry more evenly, accelerating the dissolution of the pigment, thereby shortening the extraction time and increasing the amount of pigment extracted per unit time; and, while the stirring rod 310 drives the rotating cylinder 412 to rotate, the cleaning brush 411 and the screening plate 413 move relative to each other, so that the cleaning brush 411 can clean the wolfberries remaining on the screening plate 413, dredge the screening plate 413, and prevent wolfberry particles and impurities from clogging the screening holes of the screening plate 413, thereby ensuring that the screening process is continuously and efficiently carried out, preventing the screening speed from decreasing and materials from piling up due to clogging of the screen holes, ensuring the smoothness and stability of the wolfberry screening, and maintaining the continuity of the entire pigment extraction process;

[0045] Specifically, the support frame 410 includes a horizontal plate fixedly connected to the pigment extraction tank 100, one end of the horizontal plate is fixedly connected to a sleeve 4101, the inner wall of the sleeve 4101 is rotatably connected to the stirring rod 310, and the outer wall of the bottom end of the sleeve 4101 is fixedly connected to the cleaning brush 411, which is used to ensure the stability of the cleaning brush 411 when cleaning impurities. The design of the horizontal plate and the sleeve 4101 on the support frame 410 limits the position of the cleaning brush 411, ensuring the stability of the cleaning brush 411 when cleaning the screening plate 413 when it rotates;

[0046] The top of the rotating cylinder 412 is fixedly connected to a fixed block, which is fixedly connected to the outer wall of the stirring rod 310 near one end of the rotating cylinder 412, and is used to ensure that the rotating cylinder 412 and the stirring rod 310 rotate synchronously. The bottom of the rotating cylinder 412 is rotatably connected to a stabilizing disk 4121, and the outer wall of the stabilizing disk 4121 is connected to the inner wall of the pigment extraction tank 100. The stabilizing disk 4121 is set to provide longitudinal support to the rotating cylinder 412 to ensure the stability of the rotating cylinder 412 during rotation.

[0047] Working steps of the present invention:

[0048] First, the crushed freeze-dried wolfberries are transported to the pigment extraction tank 100 through the wolfberry introduction tube 500, and an appropriate amount of solvent is simultaneously introduced through the solvent input tube 600. Next, the drive motor 200 is started, driving the stirring rod 310 to rotate, causing the rotating cylinder 412 and the screening plate 413 of the screening mechanism 400 to rotate. The screening plate 413 screens and grades the wolfberries and evenly spreads them. The cleaning brush 411 simultaneously cleans the remaining wolfberries on the screening plate 413.

[0049] At the same time, the stirring rod 310 drives the stirring blade 311 to rotate, fully mixing the wolfberry and the solvent to accelerate the pigment extraction; the scraper 312 clears the inner wall of the tank and scrapes off the attached materials. Finally, the pigment extraction is completed under the coordinated action of the mixing mechanism 300 and the screening mechanism 400, and the trapezoidal pigment extraction tank 100 outputs the extracted pigment.

[0050] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A natural pigment extraction device based on freeze-dried wolfberry, comprising a pigment extraction tank (100), characterized in that: A driving motor (200) is fixedly mounted on the top of the pigment extraction tank (100), and a mixing mechanism (300) is provided inside the pigment extraction tank (100). The mixing mechanism (300) relies on a multi-degree-of-freedom transmission system to implement centrifugal motion. During the turbulent dissolution of wolfberry and the solvent medium, an adaptive scraping component is synchronously activated to perform a gradient pressure contact-type obstacle removal operation on the inner cavity wall of the pigment extraction tank (100), thereby achieving dynamic updating of the contact interface and continuous stripping of the material attachment layer. The pigment extraction tank (100) is further provided with a screening mechanism (400) which adopts a rotary dynamic spreading method to evenly spread the crushed wolfberries into the pigment extraction tank (100). During this process, the screening mechanism (400) uses a self-driven screening structure to perform dynamic screening and grading operations on the wolfberry raw materials, and simultaneously uses an integrated clearing structure to synchronously scrape and clean the screening holes.

2. The natural pigment extraction device based on freeze-dried wolfberry according to claim 1, characterized in that: One side of the pigment extraction tank (100) is connected to a solvent input pipe (600), and the other side of the pigment extraction tank (100) is connected to a wolfberry introduction pipe (500). The pigment extraction tank (100) is generally trapezoidal in shape and is used to output the extracted pigment.

3. The natural pigment extraction device based on freeze-dried wolfberry according to claim 1, characterized in that: The mixing mechanism (300) comprises a stirring rod (310) fixedly connected to the output end of the driving motor (200); the outer wall of the bottom end of the stirring rod (310) is fixedly connected to stirring blades (311) in a circumferential array; and a scraping member (312) is fixedly connected to the outer wall of one end of the stirring rod (310) close to the stirring blades (311).

4. The natural pigment extraction device based on freeze-dried wolfberry according to claim 3, characterized in that: The top end of the stirring rod (310) passes through the top of the pigment extraction tank (100) and is connected to the driving motor (200), and is rotationally connected to the pigment extraction tank (100).

5. The natural pigment extraction device based on freeze-dried wolfberry according to claim 3, characterized in that: The middle portion of the scraping member (312) is in a hollow columnar shape and is used to connect with the stirring rod (310), and both sides of the scraping member (312) are in an arc shape and are adapted to the inner wall of the pigment extraction tank (100).

6. The natural pigment extraction device based on freeze-dried wolfberry according to claim 1, characterized in that: The screening mechanism (400) includes a support frame (410) rotatably connected to the stirring rod (310), a cleaning brush (411) is fixedly connected to one end of the bottom of the support frame (410), and a rotating drum (412) is rotatably connected to the support frame (410), and a screening plate (413) is fixedly connected to the bottom of the rotating drum (412).

7. The natural pigment extraction device based on freeze-dried wolfberry according to claim 6, characterized in that: The support frame (410) comprises a transverse plate fixedly connected to the pigment extraction tank (100), and one end of the transverse plate is fixedly connected to a sleeve (4101).

8. The natural pigment extraction device based on freeze-dried wolfberry according to claim 7, characterized in that: The inner wall of the sleeve (4101) is rotatably connected to the stirring rod (310), and the outer wall of the bottom end of the sleeve (4101) is fixedly connected to the cleaning brush (411), so as to ensure the stability of the cleaning brush (411) when cleaning impurities.

9. The natural pigment extraction device based on freeze-dried wolfberry according to claim 6, characterized in that: A fixing block is fixedly connected to the top of the rotating cylinder (412), and the fixing block is fixedly connected to the outer wall of the stirring rod (310) close to one end of the rotating cylinder (412) to ensure that the rotating cylinder (412) and the stirring rod (310) rotate synchronously.

10. The natural pigment extraction device based on freeze-dried wolfberry according to claim 6, characterized in that: The bottom of the rotating cylinder (412) is rotatably connected to a stabilizing disk (4121), and the outer wall of the stabilizing disk (4121) is connected to the inner wall of the pigment extraction tank (100).

Images