A preparation system and method of composite carrageenan

Abstract

The present invention relates to the technical field of carrageenan preparation, and specifically discloses a system and method for preparing composite carrageenan. The preparation system includes: a base liquid treatment bin, a filter aid comprehensive treatment unit, a filter aid plate, a mixing drive shaft, a rotating unit, and a combined pipeline, etc. The mixing drive shaft drives two filter aid plates to rotate in the base liquid treatment bin through the rotating unit, and the two filter aid plates rotate relative to each other with the axis of the mixing drive shaft as the center. The base liquid inlet pipe is fixed on the top of the base liquid treatment bin as the injection pipe of the base liquid treatment bin; the base liquid and the filter aid liquid are synchronously mixed, and a pre-coating layer is generated on the surface of the filter aid plate. At the same time, part of the filter aid liquid is mixed with the base liquid, and the filter aid liquid circulates in the filter aid comprehensive treatment unit to strengthen the thickness of the pre-coating layer. The double filter aid can not only improve the filtering effect and filtering efficiency, but also integrate the processes synergistically, shorten the process time, and meet the processing application requirements.

Description

Technical Field

[0001] The invention relates to the technical field of carrageenan preparation, and in particular to a system and method for preparing composite carrageenan. Background Art

[0002] In the preparation process of carrageenan, in order to ensure transparency, filter aids are added during the mixing process of the base liquid, and a pre-coating process is performed in the plate filter mechanism. The pre-coating process mainly uses the filter aid liquid to repeatedly filter the filter mechanism to form a filter cake layer on the filter surface, which increases the clarity of the filtrate and extends the filtration cycle. At present, in the preparation process of carrageenan, the base liquid is mixed with filter aids and the pre-coating filter aid layer is formed as a separate setting. If the two are integrated, the clarity of the carrageenan can be guaranteed, and the cross-operation can shorten the preparation time. Summary of the invention

[0003] The object of the present invention is to provide a system and method for preparing composite carrageenan to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A preparation system of composite carrageenan, comprising a base liquid processing chamber, a filter aid comprehensive processing unit, a filter aid plate, a mixing drive shaft, a rotating unit and a combined pipeline, wherein the mixing drive shaft drives two filter aid plates to rotate in the base liquid processing chamber through the rotating unit, and the two filter aid plates rotate relative to each other with the axis of the mixing drive shaft as the center;

[0006] The base liquid inlet pipe is fixed on the top of the base liquid treatment bin as the injection pipe of the base liquid treatment bin, the initial delivery pipeline is fixed on the top of the filter aid comprehensive treatment unit as the injection pipe of the filter aid comprehensive treatment unit, the reflux extraction dual-purpose telescopic pipeline and the liquid replenishment pipeline are combined to form a filter aid base liquid reflux pipeline, the reflux extraction dual-purpose telescopic pipeline is arranged on the top of the filter aid comprehensive treatment unit, the liquid replenishment pipeline is connected with the reflux extraction dual-purpose telescopic pipeline and extends to the side of the base liquid treatment bin, the clean water reflux pipeline passes through the mixing drive shaft and is connected with the cavity of the filter aid plate, the cavity inlet pipeline passes through the mixing drive shaft and is connected with the cavity formed by the rotation and merging of two adjacent filter aid plates, and the filtrate pipeline, the cavity inlet pipeline, the clean water reflux pipeline, the reflux extraction dual-purpose telescopic pipeline, and the self-filtration reflux pipeline form a filtration base liquid pipeline.

[0007] As a further solution of the present invention: the clean water return pipeline has two outlets, one of which is connected to the return extraction dual-purpose telescopic pipeline, and the other is directly connected to the filter aid comprehensive treatment unit.

[0008] As a further solution of the present invention: valves are provided at both ends of the filtrate pipeline, the infusion pipeline, the cavity inlet pipeline, the reflux extraction dual-purpose telescopic pipeline, the purified water reflux pipeline, and the self-filtration reflux pipeline.

[0009] As a further solution of the present invention: the telescopic structure of the dual-purpose telescopic pipeline for reflux and extraction is arranged at the bottom end, and the bottom end of the dual-purpose telescopic pipeline for reflux and extraction in the contraction limit state is located above the filter aid plate.

[0010] The method for preparing carrageenan by using the composite carrageenan preparation system comprises: S1: injecting clean water into the base liquid processing bin through the base liquid inlet pipe, heating to 80° C., adding citric acid with stirring, adjusting the pH to 5-5.5, slowly adding konjac flour and locust bean gum into the base liquid processing bin, heating to 95° C., continuously stirring and keeping warm for 30 minutes to dissolve, and then sequentially adding citric acid solution and sodium carbonate solution to obtain base liquid;

[0011] S2, which runs synchronously with S1, injects clean water into the filter aid comprehensive treatment unit through the initial delivery pipeline, adds filter aid when the temperature is heated to 100°C, and drives the filter aid plate to mix through the mixing drive shaft, so that the pre-coating liquid inside the filter aid comprehensive treatment unit is completely mixed, and a preliminary pre-coating layer is formed on the filter material surface of the filter aid plate. After the mixing is completed, the pre-coating liquid is extracted into the base liquid treatment tank through the reflux extraction dual-purpose telescopic pipeline and the liquid replenishment pipeline, and mixed with the base liquid to obtain the filter aid base liquid;

[0012] S3: The rotating unit drives the filter-aid plates to close, so that a sealed filter cavity is formed between the filter-aid plates, and the reflux extraction dual-purpose telescopic pipeline and the self-filtration reflux pipeline flush the liquid inside the filter-aid comprehensive treatment unit into the closed filter-aid plates and circulate multiple times, and the base liquid filtered by the filter-aid plates is refluxed to the inside of the filter-aid comprehensive treatment unit through the clean water reflux pipeline until the liquid in the filter-aid comprehensive treatment unit becomes clear and then the liquid is discharged;

[0013] S4: The base liquid treatment chamber transports the filter aid base liquid through the filtrate pipeline and the cavity inlet pipeline to the filter cavity formed by the two filter aid plate filter surfaces, and the filtrate flows back to the filter aid comprehensive treatment unit through the clean water return pipeline and the reflux extraction dual-purpose telescopic pipeline to obtain the filtered base liquid;

[0014] S5: After filtering, stir and slowly add carrageenan. Keep the temperature at 85℃-90℃ during stirring. Stir and mix for 30 minutes until the carrageenan is completely dissolved. Then, gel, dehydrate, crush, sterilize, dry and grind in sequence to obtain the final product.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The composite carrageenan prepared by the present invention is compounded in the early carrageenan production process, and insoluble plant fibers are removed by filtering to make the product transparent. The base liquid and the filter aid liquid are mixed synchronously, and a pre-coating layer is generated on the surface of the filter aid plate. When part of the filter aid liquid is mixed with the base liquid, the filter aid liquid is circulated in the filter aid comprehensive treatment unit to strengthen the thickness of the pre-coating layer. After the base liquid and the filter aid liquid are mixed, they are directly combined with the filter aid plate and the pre-coating layer to form a filter cavity for secondary filtration. The double filter aid can not only improve the filtration effect and filtration efficiency, but also synergistically integrate the processes, shorten the process time, and meet the processing application requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the device pipeline of the composite carrageenan preparation system of the present invention;

[0018] Figure 2 It is a flow chart of the system and method for preparing composite carrageenan of the present invention;

[0019] Figure 3 This is a comparison chart of carrageenan prepared in an embodiment of the present invention.

[0020] In the figure: 1. Base liquid treatment chamber; 11. Base liquid inlet pipe; 12. Filtrate pipeline; 13. Liquid replenishment pipeline; 2. Filter aid comprehensive treatment unit; 21. Cavity inlet pipeline; 22. Reflux extraction dual-purpose telescopic pipeline; 23. Initial delivery pipeline; 24. Clean water return pipeline; 25. Self-filtration return pipeline; 3. Filter aid plate; 4. Mixing drive shaft; 5. Rotating unit. DETAILED DESCRIPTION

[0021] See also Figure 1-Figure 3 :

[0022] In this embodiment, the device includes a base liquid processing chamber 1, a filter aid comprehensive processing unit 2, a filter aid plate 3, a mixing drive shaft 4, a rotating unit 5, and a combined pipeline. The mixing drive shaft 4 drives the two filter aid plates 3 to rotate in the base liquid processing chamber 1 through the rotating unit 5, and the two filter aid plates 3 rotate relative to each other around the axis of the mixing drive shaft 4;

[0023] The base liquid inlet pipe 11 is fixed on the top of the base liquid treatment tank 1 as the injection pipe of the base liquid treatment tank 1, the initial delivery pipe 23 is fixed on the top of the filter aid comprehensive treatment unit 2 as the injection pipe of the filter aid comprehensive treatment unit 2, the reflux extraction dual-purpose telescopic pipe 22 and the liquid replenishment pipe 13 are combined to form a filter aid base liquid reflux pipe, the reflux extraction dual-purpose telescopic pipe 22 is arranged on the top of the filter aid comprehensive treatment unit 2, the liquid replenishment pipe 13 is connected with the reflux extraction dual-purpose telescopic pipe 22 and extends to the side of the base liquid treatment tank 1, the clean water reflux pipe 24 passes through the mixing drive shaft 4 and is connected with the cavity of the filter aid plate 3, and the cavity inlet pipe 21 passes through the mixing drive shaft 4 and is connected with the cavity after the two adjacent filter aid plates 3 are rotated and merged The filtrate pipeline 12, the cavity inlet pipeline 21, the clean water return pipeline 24, the reflux extraction dual-purpose telescopic pipeline 22, and the self-filtration return pipeline 25 form a filtration base liquid pipeline. The clean water return pipeline 24 has two outlets, one of which is connected to the reflux extraction dual-purpose telescopic pipeline 22, and the other outlet is directly connected to the filter aid comprehensive treatment unit 2. Valves are provided at both ends of the filtrate pipeline 12, the liquid replenishment pipeline 13, the cavity inlet pipeline 21, the reflux extraction dual-purpose telescopic pipeline 22, the clean water return pipeline 24, and the self-filtration return pipeline 25. The telescopic structure of the reflux extraction dual-purpose telescopic pipeline 22 is set at the bottom end, and the bottom end of the reflux extraction dual-purpose telescopic pipeline 22 in the contraction limit state is located above the filter aid plate 3.

[0024] The steps of equipment processing composite carrageenan are:

[0025] S1: Inject clean water into the base liquid treatment tank 1 through the base liquid inlet pipe 11, heat to 80°C, add citric acid with stirring, adjust the pH to 5-5.5, slowly add konjac flour and locust bean gum to the base liquid treatment tank 1, heat to 95°C, continue stirring and heat preservation for 30 minutes to dissolve, and then add citric acid solution and sodium carbonate solution in sequence to obtain the base liquid.

[0026] In this embodiment, a stirring mechanism and a heating mechanism are provided inside the base liquid treatment tank 1. First, clean water is injected through the base liquid inlet pipe 11. After the heating mechanism heats the clean water inside the base liquid treatment tank 1, citric acid is added to adjust the pH value, and the base liquid is prepared according to the above steps. At this time, the base liquid is not mixed with a filter aid, and perlite filter aid is selected as the filter aid. Instead, the addition of the filter aid is overlapped with the S2 step, thereby shortening the process time of mixing the base liquid with the filter aid.

[0027] S2, which runs synchronously with S1, injects clean water into the comprehensive filter aid treatment unit 2 through the initial delivery pipeline 23, adds filter aid when the temperature is heated to 100°C, and drives the filter aid plate 3 to mix through the mixing drive shaft 4, so that the pre-coating liquid inside the comprehensive filter aid treatment unit 2 is completely mixed, and a preliminary pre-coating layer is formed on the filter material surface of the filter aid plate 3. The pre-coating liquid after mixing is extracted into the base liquid treatment tank 1 through the reflux extraction dual-purpose telescopic pipeline 22 and the liquid replenishment pipeline 13, and mixed with the base liquid to obtain the filter aid base liquid.

[0028] In this embodiment, while S1 is mixing, clean water is injected into the comprehensive filter aid treatment unit 2 through the initial delivery pipeline 23. At this time, the time for the heating mechanism of the comprehensive filter aid treatment unit 2 to heat the liquid to 100°C is close to the time for heating to 80°C in S1. At this time, the filter aid plate 3 first rotates as a mixing mechanism under the control of the mixing drive shaft 4, so that the perlite filter aid inside the comprehensive filter aid treatment unit 2 is initially mixed with water to form a filter aid liquid. Then, through the extraction effect of the reflux extraction dual-purpose telescopic pipeline 22, part of the filter aid liquid is sent into the base liquid treatment tank 1 through the liquid replenishment pipeline 13, so that the filter aid liquid contacts the base liquid. At this time, the mixing of the filter aid liquid and the base liquid is more convenient. In the mixing operation of the process of S2, increasing the mixing time can increase the mixing effect on the one hand, and on the other hand, during the mixing process, part of the perlite filter aid will also form a pre-coated layer on the filter cloth surface of the filter aid plate 3.

[0029] S3: The rotating unit 5 drives the filter-aid plate 3 to close, so that a sealed filter cavity is formed between the filter-aid plates 3. The reflux extraction dual-purpose telescopic pipeline 22 and the self-filtration reflux pipeline 25 flush the liquid inside the filter-aid comprehensive treatment unit 2 into the closed filter-aid plate 3 and circulate it multiple times. The base liquid filtered by the filter-aid plate 3 is refluxed to the inside of the filter-aid comprehensive treatment unit 2 through the clean water reflux pipeline 24 until the liquid in the filter-aid comprehensive treatment unit 2 becomes clear and then discharged. The clean water reflux pipeline 24 passes through the mixing drive shaft 4 and is connected to the cavity of the filter-aid plate 3. The cavity inlet pipeline 21 passes through the mixing drive shaft 4 and is connected to the cavity after the two adjacent filter-aid plates 3 are rotated and merged.

[0030] S4: The base liquid treatment chamber 1 transports the filter aid base liquid through the filtrate pipeline 12 and the cavity inlet pipeline 21 to the filter cavity formed by the filter surfaces of two filter aid plates 3. The filtrate flows back to the filter aid comprehensive treatment unit 2 through the clean water return pipeline 24 to obtain the filtered base liquid.

[0031] In this embodiment, after the completion of step S2, during the process of mixing the filter aid base liquid inside the base liquid treatment chamber 1, the rotating unit 5 drives the filter aid plate 3 to rotate and close, and a filter cavity is formed between the filter layers of the two filter aid plates 3. The reflux extraction dual-purpose telescopic pipeline 22 extracts the liquid inside the filter aid comprehensive treatment unit 2 into the self-filtration reflux pipeline 25, and enters the filter cavity through the cavity inlet pipeline 21. The liquid filtered through the clean water reflux pipeline 24 is put into the interior of the filter aid comprehensive treatment unit 2. The reflux extraction dual-purpose telescopic pipeline 22 can select a dual-cavity structure or the number of the reflux extraction dual-purpose telescopic pipeline 22 is set to two. In the dual-cavity structure, the reflux extraction dual-purpose telescopic pipeline 22 and the liquid replenishment pipeline 13 and the clean water reflux pipeline 24 are independent and mutually connected channels, and the self-filtration reflux pipeline 25 and the reflux extraction dual-purpose telescopic pipeline 22 are another independently connected channel. The two outlets of the clean water reflux pipeline 24 are used for liquid reflux respectively, or when the pre-coating liquid needs to be filtered in the base liquid treatment tank 1, the function of providing auxiliary filtrate to the base liquid treatment tank 1 is realized through the clean water reflux pipeline 24, the reflux extraction dual-purpose telescopic pipeline 22, and the liquid replenishment pipeline 13.

[0032] Figure 1 The flow direction of the pipeline is explained. In practical applications, power parts can be added according to the flow direction of the liquid in the pipeline for driving. The middle part of the mixing drive shaft 4 is a hollow structure. The filtering surface of the filter-aid plate 3 is lower than the edge end face of the filter-aid plate 3. When the two filter-aid plates 3 are rotated and closed by the rotating unit 5, a closed cavity is formed between the filtering surfaces due to the height difference between the filtering surface of the filter-aid plate 3 and the edge end face of the filter-aid plate 3. After closing, the cavity inlet pipeline 21 is connected to the closed cavity of the filter-aid plate 3. Due to the height difference between the filtering surface and the edge end face of the filter-aid plate 3, the cavity inlet pipeline 21 can be connected to the closed cavity of the filter-aid plate 3 after closing. At the same time, the other side of the filtering surface of the filter-aid plate 3 has a cavity for collecting filtered liquid, and the clean water return pipeline 24 passes through the mixing drive shaft 4 and is connected to the cavity of the filter-aid plate 3 for collecting filtered liquid. Figure 1 The filter-aid plate 3 shown in the figure can clearly see two filtering surfaces. The filter-aid plate 3 itself has a collecting cavity, which is closed by the filtering surface. The filtered liquid passes through the filtering surface and enters the filtering cavity, and is discharged through the clean water return pipe 24, and refluxes and circulates through the reflux extraction dual-purpose telescopic pipe 22, thereby further thickening the pre-coating thickness of the filtering surface of the filter-aid plate 3, ensuring the filtering effect and shortening the process cycle.

[0033] S5: After filtering, stir and slowly add carrageenan. Keep the temperature at 85℃-90℃ during stirring. Stir and mix for 30 minutes until the carrageenan is completely dissolved.

[0034] S51: Add two tons of cold water to the brine tank, then add 100 kg of potassium chloride and stir to dissolve, to prepare a 5% potassium chloride solution for later use.

[0035] S52: The dissolved gel is cooled to below 40°C through a plate heat exchanger and enters a gel tank through a pipeline, and potassium chloride solution is added for gelation.

[0036] S6, Plate and frame dehydration:

[0037] S61: Install the dehydration plate and frame filter cloth, and tighten the plate and frame to a pressure of 10Mpa.

[0038] S62: Open the feed valve of the dehydration plate frame, start the feed screw pump, open the bottom valve of the gel tank, and pump the gel solution into the dehydration plate frame for filter pressing and dehydration.

[0039] S63: The dehydration plate frame shall withstand a pressure not exceeding 0.25 Mpa as required by the equipment. Stop feeding before removing the plate frame, close the feed valve, and use the pressure of an air compressor to blow out the water in the plate frame for 10 minutes before loosening the plate frame to unload.

[0040] S64: When unloading, the material is caught by the film in a stainless steel trough and then transported to the crushing site for crushing.

[0041] S65: The broken rubber sheets are first cut into granules, then enter into a 35-meter crusher with a screen diameter of (12-16) mm for crushing, and then are lifted into a storage tank by wind.

[0042] S66: Open the internal baffle of the storage tank to allow the granules to enter the sterilization tank. The sterilization weight of each tank is 500 kg, and the granules are located at 1 / 2 of the volume of the sterilization tank.

[0043] S67: Lock the cover of the sterilization tank feed port and check whether it is sealed. Then start the switch and open the steam valve. The steam pressure is controlled within (0.15-0.25) MPa. The sterilization time is (20-30) minutes and the sterilization temperature is (85-100)°C. Close the steam valve and start vacuuming for (10-15) minutes. Turn off the power supply of the sterilization tank and send the sterilized pellets to the flash drying process.

[0044] S7: Open the cooling water valve, start the flash steam main unit → induced draft fan → blower → feeder → discharger in sequence, and at the same time open the steam valve to adjust the inlet air temperature to 80℃, adjust the feeder speed to (50~1000) rpm, and start feeding and drying (1-2) times.

[0045] S71: After drying, the steam, blast, induced draft, feed stirring, and discharge collector are turned off in sequence, and the material enters the grinding mill.

[0046] S72: Grinding, the grinding machine uses CR800 ultra-fine pulverizer. First, open the cooling water, start the grinding machine, and adjust the feeding speed. After the grinding is completed, turn off the cooling water and the power switch of the grinding machine.

[0047] In this embodiment, valves are provided at both ends of the filtrate pipeline 12, the liquid replenishment pipeline 13, the cavity inlet pipeline 21, the reflux extraction dual-purpose telescopic pipeline 22, the purified water reflux pipeline 24, and the self-filtration reflux pipeline 25. Many of the pipelines shown in the figure are interconnected to form different independent passages. When the end pipelines are closed, other passages can be connected without affecting each other.

[0048] In this embodiment, the telescopic structure of the dual-purpose telescopic pipeline 22 for reflux and extraction is arranged at the bottom, and the bottom end of the dual-purpose telescopic pipeline 22 for reflux and extraction in the telescopic state is located above the filter aid plate 3. This arrangement can simplify the structure and make the structure integrated, and the relative rotation of the clean water reflux pipeline 24 and the mixing drive shaft 4, and the cavity inlet pipeline 21 and the mixing drive shaft 4 can be achieved by using a rotating seal.

[0049] In this embodiment, Figure 3 The middle left picture shows the carrageenan after filtering without any auxiliary means, and the right picture shows the mixed solution after the filter aid is pre-mixed with the mixed solution and the filter plate is pre-coated using the method of the present invention.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any equivalent substitution or change made by any technician familiar with the field within the technical scope disclosed by the present invention and based on the technical solution and concept of the present invention should be covered within the protection scope of the present invention.

Claims

1. A system for preparing composite carrageenan, characterized in that: The device comprises a base liquid treatment chamber (1), a filter aid comprehensive treatment unit (2), a filter aid plate (3), a mixing drive shaft (4), a rotating unit (5), and a combined pipeline, wherein the mixing drive shaft (4) drives the two filter aid plates (3) to rotate in the base liquid treatment chamber (1) through the rotating unit (5), and the two filter aid plates (3) rotate relative to each other with the axis of the mixing drive shaft (4) as the center; The base liquid inlet pipe (11) is fixed on the top of the base liquid processing chamber (1) as a liquid injection pipe of the base liquid processing chamber (1), the initial injection pipe (23) is fixed on the top of the filter aid comprehensive processing unit (2) as a liquid injection pipe of the filter aid comprehensive processing unit (2), the reflux extraction dual-purpose telescopic pipe (22) and the liquid replenishment pipe (13) are combined to form a filter aid base liquid reflux pipe, the reflux extraction dual-purpose telescopic pipe (22) is arranged on the top of the filter aid comprehensive processing unit (2), and the liquid replenishment pipe (13) is connected to the reflux extraction dual-purpose telescopic pipe (22). The dual-purpose extraction telescopic pipeline (22) is connected and extends to the side of the base liquid treatment chamber (1); the clean water return pipeline (24) passes through the mixing drive shaft (4) and is connected to the cavity of the filter aid plate (3); the cavity inlet pipeline (21) passes through the mixing drive shaft (4) and is connected to the cavity of two adjacent filter aid plates (3) after rotation and merging; the filtrate pipeline (12), the cavity inlet pipeline (21), the clean water return pipeline (24), the dual-purpose reflux extraction telescopic pipeline (22), and the self-filtration return pipeline (25) form a filtered base liquid pipeline.

2. A system for preparing a composite carrageenan according to claim 1, characterized in that: The purified water return pipeline (24) has two outlets, one of which is connected to the return extraction dual-purpose telescopic pipeline (22), and the other is directly connected to the filtration aid comprehensive treatment unit (2).

3. A system for preparing composite carrageenan according to claim 1, characterized in that: Valves are provided at both ends of the filtrate pipeline (12), the liquid replenishment pipeline (13), the cavity inlet pipeline (21), the reflux extraction dual-purpose telescopic pipeline (22), the purified water reflux pipeline (24), and the self-filtration reflux pipeline (25).

4. A system for preparing composite carrageenan according to claim 1, characterized in that: The telescopic structure of the dual-purpose telescopic pipeline for reflux and extraction (22) is arranged at the bottom end, and the bottom end of the dual-purpose telescopic pipeline for reflux and extraction (22) in the ultimate contraction state is located above the filter aid plate (3).

5. A method for preparing carrageenan using the preparation system of a composite carrageenan according to any one of claims 1 to 4, characterized in that: include: S1: injecting clean water into the base liquid processing chamber (1) through the base liquid inlet pipe (11), heating to 80° C., adding citric acid with stirring, adjusting the pH to 5-5.5, slowly adding konjac flour and locust bean gum into the base liquid processing chamber (1), heating to 95° C., stirring and maintaining the temperature for 30 minutes, and then adding citric acid solution and sodium carbonate solution in sequence to obtain a base liquid; S2, which is operated synchronously with S1, injects clean water into the filter aid comprehensive treatment unit (2) through the initial delivery pipeline (23), adds filter aid when the temperature is heated to 100°C, and drives the filter aid plate (3) to mix through the mixing drive shaft (4), so that the pre-coating liquid inside the filter aid comprehensive treatment unit (2) is completely mixed, and a preliminary pre-coating layer is formed on the filter material surface of the filter aid plate (3); the pre-coating liquid after mixing is extracted into the base liquid treatment chamber (1) through the reflux extraction dual-purpose telescopic pipeline (22) and the liquid replenishment pipeline (13), and mixed with the base liquid to obtain the filter aid base liquid; S3: the rotating unit (5) drives the filter-aid plates (3) to close, so that a sealed filter chamber is formed between the filter-aid plates (3), and the reflux extraction dual-purpose telescopic pipeline (22) and the self-filtration reflux pipeline (25) flush the liquid inside the filter-aid integrated treatment unit (2) into the closed filter-aid plates (3) and circulate multiple times, and the base liquid filtered by the filter-aid plates (3) is refluxed into the inside of the filter-aid integrated treatment unit (2) through the clean water reflux pipeline (24), until the liquid in the filter-aid integrated treatment unit (2) becomes clear and then the liquid is discharged; S4: the base liquid treatment chamber (1) transports the filter aid base liquid through the filtrate pipeline (12) and the cavity inlet pipeline (21) to the filter cavity formed by the filter surfaces of the two filter aid plates (3), and the filtrate flows back to the filter aid comprehensive treatment unit (2) through the clean water return pipeline (24) and the reflux extraction dual-purpose telescopic pipeline (22), thereby obtaining the filtered base liquid; S5: After filtering, stir and slowly add carrageenan. Keep the temperature at 85℃-90℃ during stirring. Stir and mix for 30 minutes until the carrageenan is completely dissolved. Then, gel, dehydrate, crush, sterilize, dry and grind in sequence to obtain the final product.

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