Fucoidin desalting equipment based on membrane filtration method

Abstract

The utility model relates to the technical field of fucoidin production, and discloses fucoidin desalting equipment based on a membrane filtration method, which comprises a shell, a rotary inner cylinder is rotatably mounted in the shell, and a filter element is positioned in the rotary inner cylinder; a spiral sealing cover is mounted at the bottom of the rotary inner cylinder through threads, and a discharge pipe is mounted on the spiral sealing cover in an embedded manner; a driving assembly is arranged on the shell; and a cleaning assembly is arranged in the rotary inner cylinder. Through the arrangement of the rotary inner cylinder, fluid subjected to membrane filtration can rotate, centrifugal force generated by rotation is utilized to promote the fluid to flow on the surface of a membrane, so that the filtering effect is improved, and the scraping plate in the rotary inner cylinder can move along with the rotary inner cylinder and is in contact with the cylindrical filter element; and large particles attached to the filter element are scraped, so that macromolecules are mixed into a concentrated solution while the filtering effect is ensured, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of fucoidan production technology, specifically to a fucoidan desalination device based on membrane filtration. Background Technology

[0002] Fucoidan is a polysaccharide compound extracted from seaweed, possessing various biological and pharmacological activities. However, during the extraction process, fucoidan often contains a large amount of inorganic salts, which can affect its purity and biological activity. Traditional desalination methods, such as ion exchange and evaporation concentration, suffer from problems such as high energy consumption and complex operation. Membrane filtration technology, due to its advantages of high efficiency, energy saving, and simple operation, has become an ideal desalination method.

[0003] The existing patent document with publication number CN220513856U discloses a tubular membrane filtration structure for desalination of algal polysaccharides, including a liquid passage tube, an algal polysaccharide desalination filter tube, a connecting structure, a connecting structure, a connecting structure, a connecting structure, and a liquid passage structure. The algal polysaccharide desalination filter tube is cylindrical, and the connecting structure is provided at both ends of the algal polysaccharide desalination filter tube.

[0004] However, the above-mentioned device has the following problems when in use: During the membrane filtration process, large molecules such as fucoidan are blocked by the filter element and retained in the concentrate. These large molecules easily clog the pores on the filter element, which will lead to a decrease in filtration flux, that is, a reduction in the amount of liquid passing through the membrane per unit time, which will not only reduce filtration efficiency; on the other hand, the fucoidan that should be in the concentrate is retained on the filter element, which will cause the actual concentration of fucoidan in the concentrate to be lower than expected, affecting the quality and yield of the final product. Utility Model Content

[0005] The purpose of this invention is to solve the problems existing in the prior art and propose a fucoidan desalination device based on membrane filtration. Through the synergistic effect of the rotating inner cylinder and the cleaning component, the filtration efficiency and fucoidan yield are significantly improved, and the service life of the filter element is extended.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A fucoidan desalination device based on membrane filtration includes a shell, an inlet pipe on the shell, a cover connected to the bottom of the shell by threads, a permeate outlet pipe and a concentrate outlet pipe embedded in the cover, and a filter element installed inside the shell.

[0008] A rotating inner cylinder is rotatably mounted inside the housing, and the filter element is located inside the rotating inner cylinder;

[0009] The bottom of the rotating inner cylinder is fitted with a spiral cap via threads, and a discharge pipe is embedded in the spiral cap;

[0010] A drive assembly is provided on the housing;

[0011] The rotating inner cylinder is equipped with a cleaning component.

[0012] Preferably, the drive assembly includes a drive motor and a connecting block. The drive motor is mounted on the housing, and a rotating shaft is fixedly installed at the output end of the shaft of the drive motor. A drive gear is fixedly installed through the housing on the rotating shaft. The connecting block is fixedly connected to the rotating inner cylinder, and a driven gear is fixedly installed on the connecting block. The driven gear is meshed with the drive gear.

[0013] Preferably, the cleaning component includes a fixing rod, which is fixedly mounted on a connecting block, and a scraper is movably mounted on the fixing rod, the scraper being in direct contact with the outer wall of the filter element.

[0014] Preferably, a slider is fixedly installed on the side of the scraper facing the fixed rod, and the fixed rod has a groove at the corresponding position for the slider to slide.

[0015] Preferably, an electrically controlled valve is installed on the discharge pipe.

[0016] Preferably, a through groove is embedded at the center of the discharge pipe, the through groove being adapted to the output port of the filter element, and a sealing ring is embedded on the outer wall of the discharge pipe in the through groove.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention comprises a shell, a rotating inner cylinder, a filter element, a connecting block, a drive assembly, and a cleaning assembly. The centrifugal force generated by the rotation of the inner cylinder creates turbulence on the filter element surface, ensuring uniform fluid distribution across the entire filter element surface and preventing localized overload. It also helps flush away small particles that may clog the filter element, reducing membrane fouling and improving filtration efficiency. Furthermore, the cleaning assembly inside the rotating inner cylinder moves along with the filter element and continuously contacts it, scraping off large particles adhering to the filter element. This ensures filtration efficiency while allowing large molecules to mix into the concentrate, thus improving production efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a fucoidan desalination device based on a membrane filtration method proposed in this utility model;

[0020] Figure 2 This is a cross-sectional view of the shell of a fucoidan desalination device based on a membrane filtration method proposed in this utility model;

[0021] Figure 3 This is a schematic diagram of the drive component of a fucoidan desalination device based on a membrane filtration method proposed in this utility model;

[0022] Figure 4 This is a schematic diagram of the spiral cap installation position for a fucoidan desalination device based on membrane filtration method proposed in this utility model.

[0023] Figure 5 This is a schematic diagram of a cleaning component for a fucoidan desalination device based on a membrane filtration method proposed in this utility model.

[0024] Figure 6 This is a schematic diagram of the installation structure on the spiral seal of a fucoidan desalination device based on membrane filtration method proposed in this utility model.

[0025] In the diagram: 1. Shell; 2. Inlet pipe; 3. Drive motor; 4. Cover; 5. Permeate outlet pipe; 6. Concentrate outlet pipe; 7. Rotating inner cylinder; 8. Filter element; 9. Connecting block; 10. Fixing rod; 11. Driven gear; 12. Driven gear; 13. Rotating shaft; 14. Spiral cap; 15. Discharge pipe; 16. Electrically controlled valve; 17. Through groove; 18. Sealing ring; 19. Slider; 20. Slide groove; 21. Scraper. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] See also Figures 1 to 6 A fucoidan desalination device based on membrane filtration method includes a shell 1, on which a water inlet pipe 2 is provided, the water inlet pipe 2 being used to introduce the solution to be treated into the device;

[0028] As a preferred option, in order to ensure the effectiveness of membrane filtration, a corresponding pressurization device should be installed outside the equipment to ensure the solution pressure.

[0029] The bottom of the housing 1 is connected to a cover 4 by a thread. The cover 4 is connected by a thread, which makes it convenient for users to open the equipment for cleaning and maintenance when needed.

[0030] Preferably, the connection between the cover 4 and the shell 1 should have a good seal.

[0031] The cover 4 is fitted with a permeate outlet pipe 5 and a concentrate outlet pipe 6. The permeate outlet pipe 5 and the concentrate outlet pipe 6 are respectively connected to an external collection system to ensure the separate collection of permeate and concentrate.

[0032] The shell 1 is internally designed with a filter element 8, which is the core part of the equipment. It removes impurities from the solution through membrane filtration technology and improves the purity of fucoidan.

[0033] The filter element 8 includes a filter screen part wound into a cylindrical shape and a tube body. The upper part of the tube body is a small part that is solid and the remaining part is hollow. Micropores that allow permeate to pass through are evenly spaced on the hollow part. The other end of the tube body is connected to the permeate output tube 5. Since this is existing technology, it is not described in detail.

[0034] The housing 1 has a rotating inner cylinder 7 installed inside, and the filter element 8 is located inside the rotating inner cylinder 7. The centrifugal force generated by the rotation of the rotating inner cylinder 7 causes the fluid to form turbulence on the surface of the filter element 8, which helps to flush away small particles that may clog the filter element 8, reduce membrane fouling, and improve the filtration effect. In addition, the rotation of the rotating inner cylinder 7 can also ensure that the fluid is evenly distributed on the entire surface of the filter element 8, avoid local overload, and improve the overall filtration effect.

[0035] A spiral cap 14 is threadedly installed on the bottom of the rotating inner cylinder 7, and a discharge pipe 15 is embedded in the spiral cap 14;

[0036] Preferably, the connection between the spiral cap 14 and the rotating inner cylinder 7 should also have a good seal.

[0037] The spiral cap 14 is connected to the rotating inner drum 7 by threads, which is convenient for disassembly and cleaning. The spiral cap 14 and the rotating inner drum 7 together form a relatively closed space (similar to the drum part of a pulsator washing machine), which can drive the fluid to rotate. The discharge pipe 15 is used to discharge the permeate.

[0038] A drive assembly is provided on the housing 1 to ensure that the rotating inner cylinder 7 can rotate stably, thereby improving the filtration effect;

[0039] The rotating inner cylinder 7 is equipped with a cleaning component, which can remove large molecular particles attached to the filter element 8, ensuring the cleanliness of the filter element 8 surface, preventing clogging, improving the filtration effect and the service life of the filter element 8, and allowing large molecular particles to enter the permeate, ensuring the fucoidan content in the permeate.

[0040] The drive assembly includes a drive motor 3 and a connecting block 9. The drive motor 3 is mounted on the housing 1, and a rotating shaft 13 is fixedly installed at the output end of the shaft of the drive motor 3. The rotating shaft 13 passes through the housing 1 and a drive gear 12 is fixedly installed thereon.

[0041] The connecting block 9 is fixedly connected to the rotating inner cylinder 7, and a driven gear 11 is fixedly installed on the connecting block 9. The driven gear 11 is meshed with the driving gear 12.

[0042] The drive motor 3 provides rotational power. When the drive motor 3 starts, it causes the drive gear 12 to rotate through the rotating shaft 13. The rotation of the drive gear 12 causes the driven gear 11 to rotate through the meshing relationship, which in turn drives the rotating inner cylinder 7 to rotate stably.

[0043] The cleaning assembly includes a fixing rod 10, which is fixedly mounted on the connecting block 9. A scraper 21 is movably mounted on the fixing rod 10. The scraper 21 directly contacts the outer wall of the filter element 8. The design of the fixing rod 10 and the scraper 21 ensures that the scraper 21 can closely contact the outer wall of the filter element 8 and effectively remove the attached impurities.

[0044] A slider 19 is fixedly installed on the side of the scraper 21 facing the fixed rod 10. The fixed rod 10 has a groove 20 at the corresponding position for the slider 19 to slide. Through the cooperation of the groove 20 and the slider 19, the scraper 21 can be quickly installed or removed, making it convenient to clean the scraper 21 separately.

[0045] An electrically controlled valve 16 is installed on the discharge pipe 15. The electrically controlled valve 16 can precisely control the discharge time and flow rate of the permeate, ensuring the stability and continuity of the filtration process.

[0046] A through groove 17 is embedded in the center of the discharge pipe 15. The through groove 17 is adapted to the output port of the filter element 8. A sealing ring 18 is embedded in the outer wall of the through groove 17 of the discharge pipe 15. The sealing ring 18 can also be replaced with a dynamic sealing structure to further ensure the sealing performance.

[0047] The design of the through-groove 17 and the sealing ring 18 ensures that the permeate can be smoothly discharged from the outlet of the filter element 8, so that the concentrate will not accidentally enter the permeate, ensuring that the two can be collected separately and ensuring the filtration effect.

[0048] The working process of this utility model is as follows: the fucoidan solution to be treated enters the interior of the shell 1 through the water inlet pipe 2, and the solution enters the interior of the rotating inner cylinder 7 and comes into contact with the filter element 8;

[0049] When the drive motor 3 starts, it drives the rotating shaft 13 to rotate through the output end of the drive motor 3. The driving gear 12 on the rotating shaft 13 meshes with the driven gear 11 on the connecting block 9, so that the connecting block 9 and the rotating inner cylinder 7 rotate synchronously. The centrifugal force generated by the rotation of the rotating inner cylinder 7 causes the fluid to form turbulence on the surface of the filter element 8, which promotes the flow of the fluid on the surface of the filter element 8. The fluid is evenly distributed on the entire surface of the filter element 8, avoiding local overload and improving the overall filtration effect.

[0050] Some substances in the fluid are filtered through the pores on the filter screen of filter element 8. The filtered solution enters the tube body through the micropores on the tube body of filter element 8 and is then discharged through the permeate outlet tube 5 (which is the permeate).

[0051] At the same time, the fixing rod 10 rotates together with the connecting block 9, driving the scraper 21 to move along the outer wall of the filter element 8. The scraper 21 is in close contact with the outer wall of the filter element 8, scraping off large particles of impurities attached to the filter element 8 and preventing the filter element 8 from clogging.

[0052] When the reaction proceeds to a certain extent, the concentrated liquid can be discharged through the discharge pipe 15 and the concentrated liquid output pipe 6 by opening the electrically controlled valve 16 on the discharge pipe 15, thus achieving classified collection.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fucoidan desalination device based on membrane filtration, comprising a shell (1), an inlet pipe (2) provided on the shell (1), a cover (4) threadedly connected to the bottom of the shell (1), a permeate outlet pipe (5) and a concentrate outlet pipe (6) embedded in the cover (4), and a filter element (8) installed inside the shell (1), characterized in that, A rotating inner cylinder (7) is rotatably installed inside the housing (1), and the filter element (8) is located inside the rotating inner cylinder (7); The bottom of the rotating inner cylinder (7) is fitted with a spiral cap (14) by threads, and a discharge pipe (15) is embedded in the spiral cap (14); A drive assembly is provided inside the housing (1); The rotating inner cylinder (7) is equipped with a cleaning component.

2. The fucoidan desalination device based on membrane filtration method according to claim 1, characterized in that, The drive assembly includes a drive motor (3) and a connecting block (9). The drive motor (3) is mounted on the housing (1), and a rotating shaft (13) is fixedly installed on the output end of the shaft of the drive motor (3). The rotating shaft (13) passes through the housing (1) and a drive gear (12) is fixedly installed thereon. The connecting block (9) is fixedly connected to the rotating inner cylinder (7), and a driven gear (11) is fixedly installed on the connecting block (9). The driven gear (11) and the drive gear (12) are meshed.

3. The fucoidan desalination device based on membrane filtration method according to claim 1, characterized in that, The cleaning assembly includes a fixing rod (10), which is fixedly mounted on a connecting block (9). A scraper (21) is movably mounted on the fixing rod (10), and the scraper (21) is directly attached to the outer wall of the filter element (8).

4. The fucoidan desalination device based on membrane filtration method according to claim 3, characterized in that, The scraper (21) is fixedly mounted with a slider (19) on the side facing the fixed rod (10), and the fixed rod (10) has a groove (20) at the corresponding position for the slider (19) to slide.

5. The fucoidan desalination device based on membrane filtration method according to claim 1, characterized in that, An electrically controlled valve (16) is installed on the discharge pipe (15).

6. The fucoidan desalination device based on membrane filtration method according to claim 1, characterized in that, A through groove (17) is inlaid at the center of the spiral cap (14), the through groove (17) is adapted to the output port of the filter element (8), and a sealing ring (18) is inlaid on the outer wall of the discharge pipe (15) of the through groove (17).

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