Integrated extraction device for microalgae polysaccharide

Abstract

The invention relates to an integrated extraction device for microalgae polysaccharide. The integrated extraction device comprises an algae adding system, a centrifugal system, an enzymolysis system, a flash extraction system, a separation and purification system and a drying system, the centrifugal system comprises a centrifugal device, a filtering device, a slag scraping device, a feeding hole and a discharging hole; the enzymolysis system comprises an enzyme adding tank, an enzymolysis tank, a reflux system, a filtering system, a water adding system and a monitoring and safety system; the flash extraction system comprises a flash extraction device, a lifting device, a fixing device, a feed port and a discharge port; the separation and purification system comprises a solid-liquid separation unit, a deproteinization unit, a decolorization unit, an alcohol precipitation unit and a purification unit; the drying system comprises an atomization device and a hot air device and can dry microalgae polysaccharide. The extraction device can realize automatic and efficient extraction of microalgae polysaccharide, is automatic, efficient and suitable for various microalgae, and the microalgae polysaccharide prepared by adopting the system has relatively good stability, biological activity, extraction rate and purity.

Description

Technical Field

[0001] The present invention relates to the technical field of microbial separation, and in particular to an integrated extraction device for microalgae polysaccharides. Background Art

[0002] In recent years, the bioactivity of microalgae polysaccharides has garnered widespread attention, particularly the medicinal value of novel polysaccharides such as fucan, sulfated galactose, sulfated furan galactan, and sulfated polysaccharides. Studies have shown that these polysaccharides exhibit significant anticancer, antibacterial, antiviral, antioxidant, anti-asthma, immunomodulatory, and anticoagulant activities, and significant research progress has been achieved. Developing functional foods with defined functional factors and active ingredients based on their diverse bioactivities, optimizing their production processes, and exploring new avenues for industrial development have become current research hotspots.

[0003] However, existing microalgae polysaccharide extraction technologies still have many limitations. Traditional extraction methods (such as ultrasonic extraction, hot water extraction, acid-base extraction, and ultrasonic-assisted extraction) have low extraction efficiency for microalgae polysaccharides, and high temperatures can damage the polysaccharide structure. Ultrasonic-assisted extraction is expensive and difficult to achieve large-scale production. Acid-base extraction is corrosive to equipment and requires complex subsequent processing. Therefore, in practical applications, they face problems such as low extraction efficiency, unstable extraction time, low polysaccharide purity, and large fluctuations in polysaccharide yield.

[0004] In addition, existing extraction technologies mostly rely on manual operations, making it difficult to achieve continuous, automated, and efficient production. This results in high production costs and poor process controllability, severely restricting the industrial development of microalgae polysaccharides. To address the challenges of efficient, large-scale production of microalgae polysaccharides, promote their industrialization in functional foods, pharmaceuticals, and cosmetics, and provide new technological pathways for the efficient extraction of natural active ingredients, it is particularly important to develop integrated microalgae polysaccharide extraction devices that achieve efficient, automated extraction.

[0005] Extraction of microalgae polysaccharides requires a series of steps, including pretreatment, polysaccharide extraction, separation and purification, and drying. However, existing algae polysaccharide extraction equipment suffers from low extraction rates, inability to automate extraction, and long extraction times. For example, patent CN11894424A proposes an enhanced microalgae polysaccharide extraction method, but this method fails to achieve large-scale, integrated, and automated production of microalgae polysaccharides. To achieve integrated, automated, and efficient batch extraction of microalgae polysaccharides while minimizing labor and material resources, we have developed an integrated microalgae polysaccharide extraction device.

[0006] The problem to be solved by this technology is to provide an integrated extraction device for microalgae polysaccharides. The device is designed with an algae adding device, an enzymatic hydrolysis device, a flash extraction device, a drying device, an integrated centrifugal filtration device and an integrated separation and purification device controlled by an automated system. It can not only automatically extract algae polysaccharides in batches, but also improve the extraction rate of algae polysaccharides and reduce production costs and manpower. Summary of the Invention

[0007] The purpose of the present invention is to provide an integrated extraction device for microalgae polysaccharides, aiming to overcome the defects of the prior art and solve the problems of low extraction rate, inability to prepare automatically, and long extraction time.

[0008] To this end, the present invention proposes an integrated extraction device for microalgae polysaccharides, comprising:

[0009] Algae adding system, including algae storage unit, algae delivery pipeline and algae delivery pipeline valve;

[0010] The centrifugal system includes a centrifugal device, a filtering device, and a scraping device. The centrifugal device is a sealed inner and outer container with a centrifugal cylinder inside. The filtering device is located at the lower end of the centrifugal cylinder and includes a filter screen and a filtrate storage tank. The scraping device is located at the upper end of the filtering device and consists of a scraping plate and a slag conveying pipe, with a slag conveying pump at the lower end.

[0011] The enzymatic hydrolysis system includes an enzyme adding tank, an enzymatic hydrolysis reaction tank, a filter, a water adding tank, and a monitoring system. The enzymatic hydrolysis reaction tank is located below the centrifugal system and is fed through a slag conveying pipe. The enzymatic hydrolysis reaction tank is provided with part of the enzymatic hydrolysis reaction raw materials through two enzyme adding tanks and a water adding tank. The reacted liquid is filtered through a filter.

[0012] The flash extraction system includes a feed pipe, a discharge pipe, a flash extraction device, a lifting device, and a fixing device; the flash extraction device has a power motor and a tissue crushing head, the lifting device has a lifting arm, and the fixing device has an extraction tank and a container fixing clamp; the power motor adjusts the position of the tissue crushing head in the extraction tank via the lifting arm, and the extraction tank is fixed by the container fixing clamp; the flash extraction system is connected to the enzymatic hydrolysis system via the feed pipe;

[0013] The separation and purification system includes a solid-liquid separation unit, a deproteinization unit, a decolorization unit, an alcohol precipitation unit, and a purification unit; the solid-liquid separation unit includes a discharge pipe, a filter screen, and a valve for a liquid infusion pipe; the deproteinization unit is located below the solid-liquid separation unit and includes an agitator, an acid addition tank, a reaction tank, and a neutralization tank; the decolorization unit includes an activated carbon column; the alcohol precipitation unit includes an alcohol tank and a reaction tank; the purification unit is located below the alcohol precipitation unit and includes a gel filtration column and a liquid infusion pipe;

[0014] The drying system includes an atomization device and a hot air device, which atomizes the microalgae polysaccharides into tiny droplets and then dries them quickly.

[0015] In a preferred embodiment of the present invention, the algae adding system further comprises an algae storage box valve and an algae inlet pipeline; the algae storage unit is connected to the microalgae providing unit via the algae inlet pipeline; and the algae delivery pipeline valve controls the algae liquid to enter the centrifugal system through the algae delivery pipeline.

[0016] In a preferred embodiment of the present invention, the centrifugal system further includes an infusion valve, a filtrate storage tank, and a residue conveying pipeline valve. The filter screen is located at the lower end of the centrifugal cylinder and is connected to the filtrate storage tank. The scraper is located above the filter screen and is driven by a residue conveying pump to convey the filter residue along the residue conveying pipeline to the enzymatic hydrolysis system.

[0017] In a preferred embodiment of the present invention, the enzymatic hydrolysis system further includes a water supply valve, an enzyme addition pipeline valve, a waste residue storage tank, a residue supply pipeline valve, a feed pipeline, and a valve; when the valve is opened, the filter residue is stored in the waste residue storage tank, and the filtrate enters the extraction tank through the feed pipeline.

[0018] In a preferred embodiment of the present invention, the monitoring system includes a pH sensor, a temperature sensor and a timer.

[0019] In a preferred embodiment of the present invention, the flash extraction system further includes a power supply, a discharge pipeline valve and a control hub.

[0020] In a preferred embodiment of the present invention, the decolorization unit further includes a feed pipeline valve and a discharge pipeline; the alcohol precipitation unit further includes a pipeline valve and a filter screen.

[0021] In a preferred embodiment of the present invention, the liquid output from the flash extraction system enters the reaction tank through a filter, trichloroacetic acid is added to the reaction tank from the acid adding tank, and stirred with a stirrer. After the reaction is complete, the liquid is neutralized by the neutralization tank, and the neutralized liquid enters the activated carbon column through the discharge pipe for activated carbon adsorption decolorization. After decolorization is completed, the feed pipe valve is opened to enter the reaction tank, and then anhydrous ethanol is added to the alcohol tank to precipitate the liquid. The liquid after the alcohol precipitation is filtered with a filter; the infusion pipe valve is opened, and the filtrate enters the gel filtration column for purification.

[0022] In a preferred embodiment of the present invention, the atomizing device of the drying system includes an air duct and a bellows, and the polysaccharide solution enters the bellows through the air duct and is atomized into tiny droplets.

[0023] In a preferred embodiment of the present invention, the hot air device includes a hot air pipe and a fan, and the atomizing device and the hot air device are integrated into one design. The atomizing device is turned on in the early stage of drying to atomize the polysaccharide solution into tiny droplets, which are quickly dried under the hot air device. After the atomization of the polysaccharide solution is completed, the hot air device is turned off.

[0024] The integrated extraction device for microalgae polysaccharides provided by the present invention has the following beneficial effects:

[0025] 1) The present invention designs an algae feeding system with distinct storage units, which can achieve precise delivery of algae liquid and has the advantages of strong controllability and scalability.

[0026] 2) The present invention improves the extraction efficiency of microalgae polysaccharides through the automated enzymatic hydrolysis system and flash extraction system, ensures the purity and biological activity of microalgae polysaccharides, reduces solvent usage and extraction time, and reduces extraction costs.

[0027] 3) The present invention can achieve the drying of microalgae polysaccharides through the integrated atomization and hot air device. Compared with vacuum drying, the drying speed of spray drying is fast and continuous production can be achieved.

[0028] 4) The integrated extraction device for microalgae polysaccharides proposed in the present invention can achieve automatic and efficient extraction of microalgae polysaccharides. It is not only automatic and efficient and applicable to various microalgae, but also the microalgae polysaccharides prepared using this system have good stability, biological activity, extraction rate and purity.

[0029] In addition to the above-described purposes, features and advantages, the present application also 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

[0030] The drawings that constitute part of this application are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0031] Figure 1 This is a flow chart of the integrated extraction device for microalgae polysaccharides of the present invention;

[0032] Figure 2 This is a schematic structural diagram of an enzymatic hydrolysis device in the integrated extraction device for microalgae polysaccharides of the present invention;

[0033] Figure 3 Schematic diagram of the structure of the flash extraction device in the integrated extraction device for microalgae polysaccharides of the present invention;

[0034] Figure 4 Schematic diagram of the structure of the separation and purification system in the integrated extraction device for microalgae polysaccharides of the present invention;

[0035] Figure 5 This is a schematic structural diagram of the drying device in the integrated extraction device for microalgae polysaccharides of the present invention;

[0036] Explanation of the reference numerals: 1. valve of algae transport pipeline; 2. algae storage unit; 3. algae inlet pipeline; 4. algae transport pipeline; 5. valve of algae storage box; 6. centrifuge; 7. filter screen; 8. scraper; 9. liquid infusion valve; 10. filtrate storage tank; 11. slag transport pipeline; 12. slag transport pump; 13. valve of slag transport pipeline; 14. water adding tank; 15. water infusion valve; 16. enzyme adding tank; 17. valve of enzyme adding pipeline; 18. monitoring system; 19. filter screen; 20. waste residue storage tank; 21. valve of slag transport pipeline; 55. enzymatic hydrolysis reaction tank; 56. valve; 22. feed pipeline; 23. extraction tank; 24. tissue crushing head; 25. power motor; 26. lifting arm; 27. container 1. Fixing clamp for the device; 2. Control hub; 2. Power supply; 3. Discharge pipe; 3. Discharge pipe valve; 3. Filter; 3. Liquid infusion pipe valve; 3. Agitator; 3. Reaction tank; 3. Acid addition tank; 3. Acid infusion pipe valve; 3. Neutralization tank; 3. Liquid infusion pipe valve; 40. Discharge pipe; 41. Discharge pipe valve; 42. Activated carbon column; 43. Liquid infusion pipe valve; 44. Alcohol tank; 45. Pipeline valve; 46. Reaction tank; 47. Filter; 48. Liquid infusion pipe valve; 49. Gel filtration column; 50. Liquid infusion pipe valve; 51. Air duct; 52. Bellows; 53. Hot air duct; 54. Fan; 57. Liquid infusion pipe. DETAILED DESCRIPTION

[0037] 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.

[0038] like Figures 1 to 5 As shown, the integrated microalgae polysaccharide extraction device of the present invention comprises an algae addition system I, a centrifugation system II, an enzymatic hydrolysis system III, a flash extraction system IV, a separation and purification system V, and a drying system VI. The present invention incorporates an automated enzymatic hydrolysis system and a flash extraction system to improve the extraction efficiency of microalgae polysaccharides and ensure their purity and biological activity.

[0039] like Figure 1 As shown, the algae adding system includes a microalgae providing unit (not shown), an algae storage unit, and is connected to an algae transporting pipeline through an algae inlet pipeline. Each pipeline is equipped with a valve and a transport pump control.

[0040] Furthermore, the algae adding system specifically includes an algae storage tank valve 5, an algae storage unit 2, an algae inlet pipeline 3, an algae transport pipeline 4, and an algae transport pipeline valve 1. The algae storage unit 2 is connected to the microalgae supply unit via the algae inlet pipeline 3. The algae storage tank valve 5 is opened to transfer algae liquid from the microalgae supply unit to the algae storage unit 2 via the algae inlet pipeline 3. The algae transport pipeline valve 1 is then opened to allow the algae liquid to spontaneously transport along the pipeline under its own gravity, controlling the algae liquid to enter the centrifugal system II via the algae transport pipeline 4.

[0041] like Figure 1 As shown, the centrifugal system includes a centrifugal device, a filtering device, a scraping device, a feed port, and a discharge port; the centrifugal device is composed of two closed inner and outer layers of containers, with a centrifugal cylinder inside, a feed port at the upper end, and a discharge port at the lower end, both of which are controlled by valves; the filtering device is located at the lower end of the centrifugal cylinder, and consists of a filter screen, a filtrate storage tank, and a liquid delivery pipeline; the scraping device is located at the upper end of the filtering device, and consists of a scraping plate and a slag delivery pipeline, and the filtered residue is transported by a slag delivery pump.

[0042] Furthermore, the centrifugal system specifically includes a centrifugal cylinder 6, a filter screen 7, a scraper 8, a liquid infusion valve 9, a filtrate storage tank 10, a slag conveying pipeline 11, a slag conveying pump 12, and a slag conveying pipeline valve 13. The centrifugal system is connected to the algae adding system. The filtrate after centrifugation is stored in the filtrate storage tank 10. The slag conveying pipeline valve 13 is opened, and the filter residue enters the enzymatic hydrolysis system along the slag conveying pipeline 11 under the action of the scraper 8 and the slag conveying pump 12.

[0043] like Figure 2 As shown, the enzymatic hydrolysis system includes an enzyme addition tank, an enzymatic hydrolysis tank, a reflux system (consisting of a slag conveying pipeline, a delivery pump, and a waste residue storage tank), a filtration system (including a filter screen and a liquid delivery pipeline), a water addition system (including a water storage tank and a water delivery pipeline), and a monitoring and safety system (including a pH sensor, a temperature sensor, and a timer). The enzymatic hydrolysis tank is located a certain distance below the centrifugal system. The enzymatic hydrolysis tank is connected to the centrifugal system via a slag conveying pipeline, and the delivery pump drives the material into the reaction tank. The enzymatic hydrolysis tank is fed through the slag conveying pipeline, and the end of the slag conveying pipeline is connected to the delivery pump. The discharge port at the lower end of the delivery pump, the water delivery pipeline of the water addition system, and the discharge port at the lower end of the enzyme addition tank are all directly opposite the feed port of the enzymatic hydrolysis tank.

[0044] Furthermore, the enzymatic hydrolysis system specifically includes a water addition tank 14, a water delivery valve 15, an enzyme addition tank 16, an enzyme addition pipeline valve 17, a monitoring system 18, a filter 19, a waste residue storage tank 20, a residue delivery pipeline valve 21, an enzymatic hydrolysis reaction tank 55, and a valve 56. The enzymatic hydrolysis reaction tank 55 provides part of the enzymatic hydrolysis reaction raw materials through the two enzyme addition tanks 16 and the water addition tank 14. When the valve 56 is opened, the reacted liquid will spontaneously be transported along the pipeline to the filter 19 for filtration under the action of gravity. The filter residue is stored in the waste residue storage tank 20, and the filtrate enters the flash extraction system. Furthermore, the monitoring system 18 includes a pH sensor, a timer, and a temperature sensor, which can sensitively measure the pH, temperature, and time of the solution and more accurately control the progress of the reaction.

[0045] like Figure 3 As shown, the flash extraction system includes a flash extraction device (including a power motor and a crushing head), a lifting device (including a lifting arm and a control button) and a fixing device (including an extraction tank and a fixing clamp). The extraction tank is fixed by the fixing clamp, and the lifting arm can adjust the position of the crushing head to achieve efficient crushing.

[0046] Furthermore, the flash extraction system specifically includes a feed pipe 22, an extraction tank 23, a tissue fragmentation head 24, a power motor 25, a lifting arm 26, a container fixing clamp 27, a power source 29, a discharge pipe 30, and a discharge pipe valve 31. When the power source 29 and the control hub 28 are turned on, the power motor 25 energizes and drives the tissue fragmentation head 24 and the lifting arm 26 to perform flash extraction within the extraction tank 23. The extraction tank 23 is secured by the container fixing clamp 27. The liquid after flash extraction enters the separation and purification system through the discharge pipe 30.

[0047] like Figure 4 As shown, the separation and purification system includes a solid-liquid separation unit (including a feed port, a filter screen, and an infusion pipeline), a deproteinization unit (including an agitator, an acid addition tank, a reaction tank, and a neutralization tank), a decolorization unit (including an activated carbon column), an alcohol precipitation unit (including an alcohol tank and a reaction tank), and a purification unit (including a gel filtration column). Each unit is connected in series through an infusion pipeline to achieve continuous purification.

[0048] Furthermore, the separation and purification system specifically includes a filter 32, a liquid infusion pipeline valve 33, an agitator 34, a reaction tank 35, an acid addition tank 36, an acid infusion pipeline valve 37, a neutralization tank 38, a liquid infusion pipeline valve 39, a discharge pipeline 40, a discharge pipeline valve 41, an activated carbon column 42, a feed pipeline valve 43, an alcohol tank 44, a pipeline valve 45, a reaction tank 46, a filter 47, a liquid infusion pipeline valve 48, and a gel filtration column 49.

[0049] The feed liquid enters the reaction tank 35 through the filter 32. The acid adding tank 36 adds trichloroacetic acid to the reaction tank 35 while stirring with the stirrer 34. After the reaction is complete, the neutralization tank 38 is used for neutralization. The neutralized feed liquid enters the activated carbon column 42 through the discharge pipe 40 for activated carbon adsorption decolorization. After decolorization is completed, the feed pipe valve 43 is opened to enter the reaction tank 46. The feed liquid is then transferred to the reaction tank 46 through the alcohol tank 44. Anhydrous ethanol is then added to the alcohol tank 44 for alcohol precipitation. The liquid after alcohol precipitation is filtered with the filter 47. The infusion pipe valve 48 is opened, and the filtrate enters the gel filtration column 49 for purification. The purified liquid enters the drying system.

[0050] like Figure 5 As shown, the drying system includes an atomization device and a hot air device, which can be used to dry microalgae polysaccharides. The atomization device and hot air device are integrated. In the early stage of drying, the atomization device is turned on to atomize the polysaccharide solution into tiny droplets, which are quickly dried by the hot air device. After the polysaccharide solution is atomized, the hot air device is turned off.

[0051] Furthermore, the drying system specifically includes a liquid infusion pipeline valve 50, an air duct 51, a bellows 52, a hot air duct 53, a blower 54, and a liquid infusion pipeline 57. The drying system is connected to the separation and purification system via the liquid infusion pipeline valve 50 and the liquid infusion pipeline 57. In the early stage of drying, the atomization device is turned on to atomize the polysaccharide solution into tiny droplets, which are rapidly dried under the hot air device. After the polysaccharide solution is atomized, the hot air device is turned off to obtain microalgae polysaccharides.

[0052] The working principle and working process of the integrated microalgae polysaccharide extraction device of the present invention are briefly described below. The process of extracting microalgae polysaccharides is as follows:

[0053] Open the valve 1 of the algae transport pipeline to allow the algae liquid to enter the algae storage unit 2. After the algae storage is completed, open the valve 5 of the algae storage box to allow the algae liquid to enter the centrifugal system through the algae transport pipeline 4. The algae liquid enters the centrifuge cylinder 6 (6500r / min, 5 minutes) for centrifugation. The centrifuged filtrate is filtered through the filter screen 7. Open the valve 13 of the residue transport pipeline and transport the filtered residue to the enzymatic hydrolysis system through the residue transport pipeline 11 via the scraper 8 and the residue transport pump 12.

[0054] Open the enzyme addition pipeline valve 17, and the enzymatic hydrolysis system adds cellulase and protease in a ratio of 5:4 through the enzyme addition tank 16. Then, open the water supply valve 15, and add water through the water addition tank 14 to carry out the enzymatic hydrolysis reaction in the enzymatic hydrolysis reaction tank 55. The treated liquid passes through the filter screen 19. Open the residue pipeline valve 21, and the residue is stored in the waste residue storage tank 20. The filtrate enters the extraction tank 23 through the feed pipe 22. The extraction tank 23 is connected to the lifting arm 26 via the container fixing clamp 27. Turn on the power switch 29 and the control hub 28 to control the power motor 25 to drive the tissue crushing head 24 for flash extraction.

[0055] The extracted liquid enters filter screen 32 for filtration by opening discharge pipe valve 31. Opening inlet pipe valve 33 allows the filtrate containing protein and polysaccharides to enter reaction tank 35 via discharge pipe 30. Opening acid pipe valve 37 allows trichloroacetic acid (10% of the filtrate volume) to be added via acid addition tank 36 while stirring via stirrer 34 to fully denature the protein. Opening inlet pipe valve 39 allows sodium hydroxide to be added via neutralization tank 38 for neutralization. The neutralized liquid then flows through discharge pipe valve 41, enters activated carbon column 42, and undergoes decolorization by activated carbon adsorption. Opening inlet pipe valve 43 allows the liquid to enter reaction tank 46. Opening pipe valve 45 allows 3-4 volumes of 95% anhydrous ethanol to be added to reaction tank 46 via alcohol tank 44 for precipitation. The precipitated liquid is then filtered using filter screen 47. The infusion pipeline valve 48 is opened, and the filtrate is purified by passing through the gel filtration column 49 , and the purified liquid enters the drying system through the infusion pipeline 57 .

[0056] The drying system includes an atomization device and a hot air device. In the early stage of drying, the atomization device is turned on, and the polysaccharide solution enters the bellows 52 through the air duct 51 and is atomized into tiny droplets. It is quickly dried under the hot air pipe 53 and the fan 54. After the polysaccharide solution is atomized, the hot air device is turned off to obtain microalgae polysaccharides.

[0057] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. An integrated extraction device for microalgae polysaccharides, characterized in that: include: An algae adding system comprises an algae storage unit (2), an algae transport pipeline (4) and an algae transport pipeline valve (1); A centrifugal system comprises a centrifugal device, a filtering device and a scraping device; the centrifugal device is a sealed inner and outer double-layer container, containing a centrifugal cylinder (6); the filtering device is located at the lower end of the centrifugal cylinder and comprises a filter screen (7) and a filtrate storage tank (10); the scraping device is located at the upper end of the filtering device and consists of a scraping plate (8) and a slag conveying pipe (11), and a slag conveying pump (12) is provided at the lower end; The enzymolysis system comprises an enzyme adding tank (16), an enzymolysis reaction tank (55), a filter (19), a water adding tank (14), and a monitoring system (18); the enzymolysis reaction tank (55) is located below the centrifugal system and is fed with materials through a slag conveying pipe (11); the enzymolysis reaction tank (55) is provided with part of the enzymolysis reaction raw materials through two enzyme adding tanks (16) and a water adding tank (14); and the reacted liquid is filtered through a filter (19). A flash extraction system comprises a feed pipe (22), a discharge pipe (30), a flash extraction device, a lifting device and a fixing device; the flash extraction device comprises a power motor (25) and a tissue crushing head (24), the lifting device comprises a lifting arm (26), and the fixing device comprises an extraction tank (23) and a container fixing clamp (27); the power motor (25) adjusts the position of the tissue crushing head (24) in the extraction tank (23) via the lifting arm (26), and the extraction tank (23) is fixed via the container fixing clamp (27); the flash extraction system is connected to an enzymatic hydrolysis system via a feed pipe (22); A separation and purification system comprises a solid-liquid separation unit, a deproteinization unit, a decolorization unit, an alcohol precipitation unit, and a purification unit; the solid-liquid separation unit comprises a discharge pipe (30), a filter screen (32), and a liquid infusion pipe valve (33); the deproteinization unit is located below the solid-liquid separation unit and comprises an agitator (34), an acid addition tank (36), a reaction tank (35), and a neutralization tank (38); the decolorization unit comprises an activated carbon column (42); the alcohol precipitation unit comprises an alcohol tank (44) and a reaction tank (46); the purification unit is located below the alcohol precipitation unit and comprises a gel filtration column (49) and a liquid infusion pipe (57); The drying system includes an atomizing device and a hot air device, which atomizes the microalgae polysaccharides into tiny droplets and then dries them quickly.

2. The integrated extraction device for microalgae polysaccharides according to claim 1, characterized in that: The algae adding system further comprises an algae storage box valve (5) and an algae inlet pipeline (3); the algae storage unit (2) is connected to the microalgae providing unit via the algae inlet pipeline (3); and the algae delivery pipeline valve (1) controls the algae liquid to enter the centrifugal system via the algae delivery pipeline (4).

3. The integrated extraction device for microalgae polysaccharides according to claim 1, characterized in that: The centrifugal system further comprises a liquid infusion valve (9), a filtrate storage tank (10), and a residue conveying pipeline valve (13); the filter screen (7) is located at the lower end of the centrifugal cylinder and is connected to the filtrate storage tank (10); the scraper (8) is located above the filter screen (7) and drives the filter residue along the residue conveying pipeline (11) to be conveyed to the enzymatic hydrolysis system via a residue conveying pump (12).

4. The integrated extraction device for microalgae polysaccharides according to claim 1, characterized in that: The enzymatic hydrolysis system further comprises a water delivery valve (15), an enzyme addition pipeline valve (17), a waste residue storage tank (20), a residue delivery pipeline valve (21), a feed pipeline (22), and a valve (56); when the valve (56) is opened, the filtered residue is stored in the waste residue storage tank (20), and the filtrate enters the extraction tank (23) through the feed pipeline (22).

5. The integrated extraction device for microalgae polysaccharides according to claim 1, characterized in that: The monitoring system (18) includes a pH sensor, a temperature sensor and a timer.

6. The integrated extraction device for microalgae polysaccharides according to claim 1, characterized in that: The flash extraction system further comprises a power source (29), a discharge pipe valve (31) and a control hub (28).

7. The integrated extraction device for microalgae polysaccharides according to claim 1, characterized in that: The decolorization unit further includes a feed pipeline valve (43) and a discharge pipeline (40); the alcohol precipitation unit further includes a pipeline valve (45) and a filter (47).

8. The integrated extraction device for microalgae polysaccharides according to claim 7, characterized in that: The liquid outputted from the flash extraction system enters a reaction tank (35) through a filter screen (32); an acid adding tank (36) adds trichloroacetic acid into the reaction tank (35); and the mixture is stirred by a stirrer (34); after the reaction is complete, the mixture is neutralized by a neutralization tank (38); the neutralized liquid enters an activated carbon column (42) through a discharge pipe (40) for decolorization by activated carbon adsorption; after decolorization is completed, the liquid is opened by a feed pipe valve (43) and enters a reaction tank (46); an alcohol tank (44) is used to add anhydrous ethanol to the reaction tank (46) for alcohol precipitation; and the liquid after alcohol precipitation is filtered by a filter screen (47); and a liquid infusion pipe valve (48) is opened, and the filtrate enters a gel filtration column (49) for purification.

9. The integrated extraction device for microalgae polysaccharides according to claim 1, characterized in that: The atomizing device of the drying system comprises an air duct (51) and a bellows (52). The polysaccharide solution enters the bellows (52) through the air duct (51) and is atomized into tiny droplets.

10. The integrated extraction device for microalgae polysaccharides according to claim 9, characterized in that: The hot air device comprises a hot air pipe (53) and a fan (54), and the atomizing device and the hot air device are integrated into one design.

Images