Fermentation and deodorization equipment beneficial to flavor improvement for abalone peptide production and use method of fermentation and deodorization equipment

Abstract

The invention discloses fermentation deodorization equipment beneficial to flavor improvement for abalone peptide production, which comprises a fermentation tank, the fermentation tank comprises an inner cavity and an outer cavity, the inner cavity and the outer cavity are communicated through a flow channel port, and the inner side of the inner cavity is provided with a scraper blade for sweeping redundant floating materials out of the inner cavity; according to the invention, the stirring assembly is arranged in the fermentation deodorization equipment, so that a solution in a fermentation process is effectively stirred and mixed, a fermentation liquid is combined with the cavity in the cavity, meanwhile, large vacuoles in the fermentation solution can be removed in the stirring process, and the large vacuoles are scattered and float on the surface, so that subsequent scraping is facilitated; by arranging the scraping assembly, redundant surface foam in the fermentation process is scraped off. In addition, the invention also provides a use method of the fermentation deodorization equipment beneficial to flavor improvement for abalone peptide production, so that the operation of workers is simpler and more convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of abalone deep processing, and specifically relates to a fermentation and deodorization device for abalone peptide production and the use method thereof, which is beneficial to flavor improvement. Background Art

[0002] Abalone peptide is a marine bioactive peptide with high nutritional value extracted from abalone. It has multiple biological activities such as antioxidant, immune enhancement, and anti-fatigue. In the production process, removing the fishy smell of abalone peptide is an important step to improve its taste and market acceptance. Deodorization technology usually involves enzymatic hydrolysis, fermentation, adsorption and other processes. In the processing of abalone peptide, the following operations need to be carried out: raw material pretreatment; boiling, enzymatic hydrolysis, enzyme inactivation; filtration and slag removal; coarse filtration; protein peptide and polysaccharide separation; fermentation deodorization; heavy metal removal and desalination treatment; small molecule peptide separation; camel color treatment; concentration; centrifugal drying and other operations. In this deep processing process, fermentation deodorization is required, which is mainly achieved by fermenting the separated Thai liquid with flavor to improve the fishy smell of the raw materials and achieve deodorization.

[0003] However, traditional fermentation and deodorization devices often use standard mechanical stirring and ventilation fermentation devices, which are prone to foaming during the fermentation process, especially the protein and other surfactants in the fermentation liquid are prone to foaming under the action of stirring and ventilation. However, excessive foam may cause the fermentation liquid to overflow, increase the risk of contamination, and even affect the effective volume and stirring effect of the fermentation tank, which often has an adverse effect on production.

[0004] Therefore, it is necessary to promptly remove excess surface foam during the fermentation process. In order to solve the above problem, the present invention proposes a fermentation and deodorization device for abalone peptide production that is beneficial to flavor improvement and a method for using the same. Summary of the invention

[0005] In order to solve the technical problems mentioned in the background technology, the object of the present invention is to provide a fermentation and deodorization device for abalone peptide production which is beneficial to flavor improvement.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A fermentation and deodorization device for abalone peptide production that is beneficial to flavor improvement comprises a fermentation tank, wherein the fermentation tank comprises an inner cavity and an outer cavity, wherein the inner cavity and the outer cavity are connected via a flow channel, and a scraper is provided inside the inner cavity to sweep excess floating materials out of the inner cavity;

[0008] A scraper assembly is arranged above the fermenter, and the scraper assembly includes a scraper arranged at the bottom, and the scraper is arranged below the cross-shaped plate, and the cross-shaped plate is installed on the scraper ring, and a first rotating shaft is vertically arranged upward in the middle of the scraper ring, and the first rotating shaft is connected to a first motor outside the fermenter;

[0009] The cam is an axially-coupled device for activating the rotation of the rotary shaft and actuating the rotary shaft to move the rotary shaft in a direction of rotation relative to the longitudinal axis of the rotary shaft.

[0010] Furthermore, a first liquid outlet pipe and a second liquid outlet pipe are provided at the bottom of the fermentation tank, the first liquid outlet pipe is connected to the bottom of the outer cavity, the second liquid outlet pipe is connected to the bottom of the inner cavity, and the first liquid outlet pipe and the second liquid outlet pipe are both provided with electric control valves.

[0011] Furthermore, the second rotating shaft, the third rotating shaft and the fourth rotating shaft are all cylindrically arranged, and the cross-sectional radius gradually decreases from the second rotating shaft, the third rotating shaft to the fourth rotating shaft, so as to facilitate the fourth rotating shaft to be inserted into the ball bearing seat of the first rotating shaft, thereby facilitating the limiting of the fourth rotating shaft.

[0012] Furthermore, the first stirring ring is coupled to the first inclined rod, and the second stirring ring is coupled to the second inclined rod.

[0013] Furthermore, the first inclined rod is arranged to be inclined upward, and the second inclined rod is arranged to be inclined downward.

[0014] Furthermore, a stirring rod is provided between the first ring and the second ring, and a plurality of stirring blades distributed at equal distances are provided on the stirring rod.

[0015] Furthermore, the stirring blades are limited by front and rear limit blocks, which facilitates the limiting of the stirring blades.

[0016] Furthermore, a limiting column is provided on the inner side of the inner cavity, and a sleeve ring is provided at the end of the limiting column; during assembly, the first rotating shaft is limited to rotate in the sleeve ring, and a ball bearing is provided in the sleeve ring to cooperate with the first rotating shaft.

[0017] Furthermore, a liquid level sensor is provided inside the fermentation tank for real-time monitoring of the liquid level during feeding to prevent the liquid level from exceeding the height of the flow port and causing the fermentation liquid to flow out.

[0018] Another aspect of the present invention provides a method for using a fermentation and deodorization device for improving the flavor of abalone peptide production, comprising the following steps:

[0019] S1. Close the first and second liquid outlet pipes at the bottom of the fermenter, introduce the solution into the fermenter through the guide pipe according to the ratio, introduce the solution into the fermenter according to the predetermined amount, and monitor the liquid level height through the liquid level sensor and the external controller, and control the liquid level height not to exceed the position of the flow channel opening, which is generally close to the flow channel buckle, and the distance is generally set between 3-7cm, and stop feeding when it reaches the specified liquid level;

[0020] S2. Turn on the second motor to slowly stir the fermentation liquid for fermentation, drive the second rotating shaft through the second motor, and then drive the third rotating shaft and the fourth rotating shaft to rotate synchronously through the second rotating shaft. Since the end of the fourth rotating shaft is limited in the ball bearing seat inside the first rotating shaft, the fourth rotating shaft is limited by the first rotating shaft. At this time, the first beam, the second beam, the hollow first ring, and the second ring on the third rotating shaft are all rotated under the drive of the second motor, and the first inclined rod used to connect the first beam and the first ring, and the second inclined rod used to connect the second beam and the second ring also rotate accordingly, and the first stirring ring and the second stirring ring sleeved on the first inclined rod and the second inclined rod rotate along with the rotation, and while stirring, the foam in the inner layer of the fermentation liquid is destroyed to prevent the generation of large vacuoles;

[0021] S3. A stirring rod is also provided on the third rotating shaft, and a plurality of stirring blades are arranged equidistantly on the stirring rod. The stirring blades are used to stir the fermentation liquid around the third rotating shaft. A rotating disk is provided at the bottom of the second beam, and a flow hole is provided on the rotating disk for circulation, which can break up the fermentation liquid;

[0022] S4. After the stirring is completed, the second motor is turned off to allow the fermentation liquid to enter a static state, and then the first motor is turned on, and the first motor is used to drive the first rotating shaft. Excessive foam on the surface of the fermentation liquid is removed by rotating the first rotating shaft, that is, the floating foam that has overflowed to the flow channel is scraped off, and the surface foam is scraped into the outer cavity through the flow channel. The excess foam flows out through the outer cavity and the first liquid outlet pipe. This operation needs to be repeated several times during the fermentation process to remove excess foam to ensure that the flavor of the fermentation is not affected. At the same time, the opening and closing of the first liquid outlet pipe can be controlled by the electric control valve during this period;

[0023] S5. After the fermentation is completed, the first motor is turned off, and the electric control valve on the second liquid outlet pipe is opened to allow the fermentation liquid to flow out from the second liquid outlet pipe, and the fermentation liquid can be collected.

[0024] Beneficial effects of the present invention:

[0025] The present invention provides a fermentation and deodorization device for improving the flavor of abalone peptide production and a method for using the device. The separated abalone peptide liquid is subjected to flavor fermentation by the fermentation and deodorization device to improve the original fishy smell. By arranging a stirring component in the fermentation and deodorization device, the solution in the fermentation process is effectively stirred and mixed, and the fermentation liquid is combined with the cavity in the cavity. At the same time, large bubbles in the fermentation solution can be removed during the stirring process, broken up and floated to the surface, which is convenient for subsequent scraping. By arranging a scraping component, excess surface foam in the fermentation process is scraped off, thereby preventing excessive foam from affecting the normal fermentation of the fermentation liquid and ensuring the flavor of the fermentation process. In the design process, the end of the fourth rotating shaft is cleverly limited inside the first rotating shaft, and a limiting column is set outside the first rotating shaft for limiting sleeve connection, so that the rotation of the first rotating shaft and the fourth rotating shaft is not affected, and the first rotating shaft and the fourth rotating shaft can be better limited, and they do not affect each other during operation. The present invention also provides a method for using the fermentation and deodorization device, which makes it easier and more convenient for workers to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a cross-sectional view of the overall structure of the present invention.

[0027] Figure 2 It is an enlarged view of a part of the structure of the stirring component of the present invention.

[0028] Figure 3 This is a cross-sectional view of the fourth rotating shaft and the first rotating shaft after being assembled according to the present invention.

[0029] Figure 4 for Figure 3 A magnified split image.

[0030] Figure 5 This is an enlarged view of the scraper structure.

[0031] Figure 6 It is a schematic diagram of the three-dimensional structure of the scraper component.

[0032] Figure 7 for Figure 6 Top view of the .

[0033] Figure 8 It is a cross-sectional view showing that the fourth rotating shaft is sleeved in the first rotating shaft.

[0034] In the figure: 100 fermentation tank, 101 inner cavity, 102 outer cavity, 103 flow channel outlet, 104 first liquid outlet pipe, 105 electric control valve, 106 limit column, 107 second liquid outlet pipe;

[0035] 200 scraper assembly, 201 first motor, 202 first rotating shaft, 203 scraper ring, 204 scraper plate, 205 ball bearing;

[0036] 300 stirring assembly, 301 second motor, 302 second rotating shaft, 303 third rotating shaft, 304 fourth rotating shaft, 305 first cross beam, 306 first inclined rod, 307 first stirring ring, 308 first sleeve ring, 309 stirring rod, 310 stirring blade, 311 second cross beam, 312 second inclined rod, 313 second stirring ring, 314 second sleeve ring, 315 rotating disk, 3151 flow hole. DETAILED DESCRIPTION

[0037] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0038] Example 1

[0039] A fermentation and deodorization device for improving flavor for abalone peptide production, comprising a fermenter 100, wherein a liquid level sensor is arranged inside the fermenter 100 to facilitate liquid level monitoring, wherein the fermenter 100 comprises an inner cavity 101 and an outer cavity 102, wherein the inner cavity 101 and the outer cavity 102 are connected via a flow channel opening 103, wherein a scraper 204 for sweeping excess floating material out of the inner cavity 101 is arranged on the inner side of the inner cavity 101, wherein a first liquid outlet pipe 104 and a second liquid outlet pipe 107 are arranged at the bottom of the fermenter 101, wherein the first liquid outlet pipe 104 is connected to the bottom of the cavity of the outer cavity 102, and the second liquid outlet pipe 107 is connected to the bottom of the cavity of the inner cavity 101, and wherein an electric control valve 105 is arranged on the first liquid outlet pipe 104 and the second liquid outlet pipe 107 to facilitate material discharge control;

[0040] A scraper assembly 200 is arranged above the fermentation tank 100, and the scraper assembly 200 includes a scraper 204 arranged at the bottom, and the scraper 204 is arranged below the cross-shaped plate, and the cross-shaped plate is installed on a scraper ring 203. A first rotating shaft 202 is vertically arranged upward in the middle of the scraper ring 203, and the first rotating shaft 202 is connected to a first motor 201 outside the fermentation tank 100;

[0041] A stirring assembly 300 is arranged below the fermentation tank 100, and the stirring assembly 300 includes a second motor 301 arranged outside the fermentation tank 100, the output shaft of the second motor 301 is arranged upward, and is connected to a second rotating shaft 302 installed on the fermentation tank 100, the second rotating shaft 302 is upwardly fixedly connected to a vertically installed third rotating shaft 303, and the top of the third rotating shaft 303 is upwardly fixedly connected to a vertically installed fourth rotating shaft 304, in order to facilitate the assembly of the fourth rotating shaft 304, the second rotating shaft 302, the third rotating shaft 303, and the fourth rotating shaft 304 are all arranged in a cylindrical shape, and the cross-sectional radius of the order from the second rotating shaft 302, the third rotating shaft 303 to the fourth rotating shaft 304 gradually decreases;

[0042] It should be noted that the end of the fourth rotating shaft 304 is sleeved in the ball bearing 205 on the inner wall of the first rotating shaft 202, so it can be limited and rotated through the first rotating shaft 202. At the same time, a limiting column 106 is provided on the inner side of the inner cavity 101, and a sleeve ring is provided at the end of the limiting column 106; during assembly, the first rotating shaft 202 is limited and rotated in the sleeve ring, and a ball bearing is provided in the sleeve ring to cooperate with the first rotating shaft 202, so as to facilitate the limiting of the first rotating shaft 202 when rotating.

[0043] The upper end of the third rotating shaft 303 is provided with a first beam 305 installed in a circumferential manner, and a first hollow ring 308 is provided below the first beam 305. The first ring 308 and the first beam 305 are directly connected to a first inclined rod 306, and a first stirring ring 307 is sleeved on the first inclined rod 306. A hollow second ring 314 is provided below the first ring 308, and the second ring 314 is connected to the second beam 311 below through a second inclined rod (312), and the second inclined rod (312) is connected to the second beam 311 below. A second stirring ring 313 is sleeved, a rotating disk 315 is installed downward on the second crossbeam 311, and the rotating disk 315 is provided with evenly distributed flow holes 3151. The first stirring ring 307 is wound on the first inclined rod 305, and the second stirring ring 313 is wound on the second inclined rod 312. During installation, the first inclined rod 305 is arranged to be inclined upward, and the second inclined rod 312 is arranged to be inclined downward. This arrangement can make the fermentation liquid flow in a vortex turbulent state, which is convenient for removing bubbles in the fermentation liquid;

[0044] In order to enhance the stirring effect of the fermentation liquid, a stirring rod 309 is further provided between the first ring 308 and the second ring 314. The stirring rod 309 is provided with a plurality of stirring blades 310 distributed at equal intervals. The stirring blades 310 are limited by front and rear limit blocks.

[0045] In the specific use process of this equipment, the following operations are specifically included: S1. Close the first liquid outlet pipe and the second liquid outlet pipe at the bottom of the fermenter, introduce the solution into the fermenter through the guide pipe according to the ratio, introduce the solution into the fermenter according to the predetermined amount, and monitor the liquid level height through the liquid level sensor and the external controller, control the liquid level height not to exceed the position of the flow channel outlet, and stop feeding when it reaches the specified liquid level;

[0046] S2. Turn on the second motor to slowly stir the fermentation liquid for fermentation, drive the second rotating shaft through the second motor, and then drive the third rotating shaft and the fourth rotating shaft to rotate synchronously through the second rotating shaft. Since the end of the fourth rotating shaft is limited in the ball bearing inside the first rotating shaft, the fourth rotating shaft is limited by the first rotating shaft. At this time, the first beam, the second beam, the hollow first ring, and the second ring on the third rotating shaft are all rotated under the drive of the second motor, and the first inclined rod used to connect the first beam and the first ring, and the second inclined rod used to connect the second beam and the second ring also rotate accordingly, and the first stirring ring and the second stirring ring sleeved on the first inclined rod and the second inclined rod rotate along with the rotation, and while stirring, the foam in the inner layer of the fermentation liquid is destroyed to prevent the generation of large vacuoles;

[0047] S3. A stirring rod is also provided on the third rotating shaft, and a plurality of stirring blades are arranged equidistantly on the stirring rod. The stirring blades are used to stir the fermentation liquid around the third rotating shaft. A rotating disk is provided at the bottom of the second beam, and a flow hole is provided on the rotating disk for circulation, which can break up the fermentation liquid;

[0048] S4. After the stirring is completed, the second motor is turned off to allow the fermentation liquid to enter a static state, and then the first motor is turned on, and the first motor is used to drive the first rotating shaft. Excessive foam on the surface of the fermentation liquid is removed by rotating the first rotating shaft, that is, the floating foam that has overflowed to the flow channel is scraped off, and the surface foam is scraped into the outer cavity through the flow channel. The excess foam flows out through the outer cavity and the first liquid outlet pipe. This operation needs to be repeated several times during the fermentation process to remove excess foam to ensure that the flavor of the fermentation is not affected. At the same time, the opening and closing of the first liquid outlet pipe can be controlled by the electric control valve during this period;

[0049] S5. After the fermentation is completed, the first motor is turned off, and the electric control valve on the second liquid outlet pipe is opened to allow the fermentation liquid to flow out from the second liquid outlet pipe, and the fermentation liquid can be collected.

[0050] The present invention sets a flow channel opening between the inner cavity and the outer cavity of the fermentation tank, and then uses a built-in scraper to sweep and scrape the film that exceeds the flow channel opening but remains in the inner cavity, so that the floating foam is swept from the inner cavity to the outer cavity, and then the excess foam is discharged through the first liquid outlet pipe to avoid affecting the normal fermentation.

[0051] It should be noted that although this solution is limited to the use of abalone peptides in fermentation to remove fishy smell, this solution can also be extended to any situation where foaming is generated during the fermentation process and the foam needs to be removed, without limiting the product range too narrowly.

[0052] The above contents are merely examples and explanations of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the invention or exceed the scope defined by the claims, they shall all fall within the protection scope of the present invention.

Claims

1. A fermentation and deodorization device for improving the flavor of abalone peptide production, characterized in that: The fermentation tank (100) comprises an inner cavity (101) and an outer cavity (102), the inner cavity (101) and the outer cavity (102) are connected via a flow channel (103), and a scraper (204) is provided on the inner side of the inner cavity (101) for sweeping excess floating materials out of the inner cavity (101); A scraper assembly (200) is arranged above the fermentation tank (100), and the scraper assembly (200) includes a scraper (204) arranged at the bottom, and the scraper (204) is arranged below a cross-shaped plate, and the cross-shaped plate is installed on a scraper ring (203), and a first rotating shaft (202) is vertically arranged upward in the middle of the scraper ring (203), and the first rotating shaft (202) is connected to a first motor (201) outside the fermentation tank (100); A stirring assembly (300) is arranged below the fermentation tank (100), and the stirring assembly (300) includes a second motor (301) arranged outside the fermentation tank (100), the output shaft of the second motor (301) is arranged upward and connected to a second rotating shaft (302) installed on the fermentation tank (100), the second rotating shaft (302) is upwardly fixedly connected to a third rotating shaft (303) installed vertically, the top of the third rotating shaft (303) is upwardly fixedly connected to a fourth rotating shaft (304) installed vertically, the end of the fourth rotating shaft (304) is sleeved in a ball bearing seat (205) on the inner side wall of the first rotating shaft (202), and the upper end of the third rotating shaft (303) is provided with a third rotating shaft (304) installed circumferentially. A crossbeam (305), a first hollow-mounted first ring (308) is disposed below the first crossbeam (305), the first ring (308) and the first crossbeam (305) are directly connected to a first inclined rod (306), a first stirring ring (307) is sleeved on the first inclined rod (306), a hollow second ring (314) is disposed below the first ring (308), the second ring (314) is connected to a second crossbeam (311) below via a second inclined rod (312), a second stirring ring (313) is sleeved on the second inclined rod (312), a rotating disk (315) is mounted downward on the second crossbeam (311), and the rotating disk (315) is provided with evenly distributed flow holes (3151).

2. The fermentation and deodorization equipment for improving flavor of abalone peptide production according to claim 1, characterized in that: A first liquid outlet pipe (104) and a second liquid outlet pipe (107) are provided at the bottom of the fermentation tank (101); the first liquid outlet pipe (104) is connected to the bottom of the outer cavity (102); the second liquid outlet pipe (107) is connected to the bottom of the inner cavity (101); and both the first liquid outlet pipe (104) and the second liquid outlet pipe (107) are provided with electric control valves (105).

3. The fermentation and deodorization equipment for improving flavor of abalone peptide production according to claim 1, characterized in that: The second rotating shaft (302), the third rotating shaft (303), and the fourth rotating shaft (304) are all arranged in a cylindrical shape, and the cross-sectional radius gradually decreases from the second rotating shaft (302), the third rotating shaft (303) to the fourth rotating shaft (304).

4. The fermentation and deodorization equipment for improving flavor of abalone peptide production according to claim 1, characterized in that: The first stirring ring (307) is wound around the first inclined rod (305), and the second stirring ring (313) is wound around the second inclined rod (312).

5. The fermentation and deodorization equipment for improving flavor of abalone peptide production according to claim 1, characterized in that: The first inclined rod (305) is arranged to be inclined upward, and the second inclined rod (312) is arranged to be inclined downward.

6. The fermentation and deodorization equipment for improving flavor for producing abalone peptides according to any one of claims 1 to 5, characterized in that: A stirring rod (309) is also provided between the first sleeve ring (308) and the second sleeve ring (314), and a plurality of stirring blades (310) distributed at equal distances are provided on the stirring rod (309).

7. The fermentation and deodorization equipment for improving flavor of abalone peptide production according to claim 6, characterized in that: The stirring blade (310) is limited by front and rear limit blocks.

8. The fermentation and deodorization equipment for improving flavor for producing abalone peptides according to claim 7, characterized in that: A limiting column (106) is provided on the inner side of the inner cavity (101), and a sleeve ring is provided at the end of the limiting column (106); during assembly, the first rotating shaft (202) is limited in rotation in the sleeve ring, and a ball bearing is provided in the sleeve ring to cooperate with the first rotating shaft (202).

9. The fermentation and deodorization equipment for improving flavor of abalone peptide production according to claim 8, characterized in that: A liquid level sensor is provided inside the fermentation tank (100).

10. The method for using the fermentation and deodorization equipment for improving flavor for abalone peptide production according to claim 9, characterized in that: The steps include: S1. Close the first and second liquid outlet pipes at the bottom of the fermenter, introduce the solution into the fermenter through the guide pipe according to the ratio, introduce the predetermined amount of solution into the fermenter, and monitor the liquid level through the liquid level sensor and the external controller to control the liquid level not to exceed the position of the flow channel, and stop feeding when it reaches the specified liquid level; S2. Turn on the second motor to slowly stir the fermentation liquid for fermentation, drive the second rotating shaft through the second motor, and then drive the third rotating shaft and the fourth rotating shaft to rotate synchronously through the second rotating shaft. Since the end of the fourth rotating shaft is limited in the ball bearing seat inside the first rotating shaft, the fourth rotating shaft is limited by the first rotating shaft. At this time, the first beam, the second beam, the hollow first ring, and the second ring on the third rotating shaft are all rotated under the drive of the second motor, and the first inclined rod used to connect the first beam and the first ring, and the second inclined rod used to connect the second beam and the second ring also rotate accordingly, and the first stirring ring and the second stirring ring sleeved on the first inclined rod and the second inclined rod rotate along with the rotation, and while stirring, the foam in the inner layer of the fermentation liquid is destroyed to prevent the generation of large vacuoles; S3. A stirring rod is also provided on the third rotating shaft, and a plurality of stirring blades are arranged equidistantly on the stirring rod. The stirring blades are used to stir the fermentation liquid around the third rotating shaft. A rotating disk is provided at the bottom of the second beam, and a flow hole is provided on the rotating disk for circulation, which can break up the fermentation liquid; S4. After the stirring is completed, the second motor is turned off to allow the fermentation liquid to enter a static state, and then the first motor is turned on, and the first motor is used to drive the first rotating shaft. Excessive foam on the surface of the fermentation liquid is removed by rotating the first rotating shaft, that is, the floating foam that has overflowed to the flow channel is scraped off, and the surface foam is scraped into the outer cavity through the flow channel. The excess foam flows out through the outer cavity and the first liquid outlet pipe. This operation needs to be repeated several times during the fermentation process to remove excess foam to ensure that the flavor of the fermentation is not affected. At the same time, the opening and closing of the first liquid outlet pipe can be controlled by the electric control valve during this period; S5. After the fermentation is completed, the first motor is turned off, and the electric control valve on the second liquid outlet pipe is opened to allow the fermentation liquid to flow out from the second liquid outlet pipe, and the fermentation liquid can be collected.

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