Fermentation equipment and prefabricated vegetable microbial fermentation process

Abstract

The invention relates to the technical field of fermentation equipment, and discloses fermentation equipment and a prefabricated vegetable microbial fermentation process. After one fermentation stage is completed, fermentation liquid in the outer fermentation cylinder is discharged through a water outlet, then the rotary driving mechanism drives the containing cages and the inner filtering cylinder to rotate in the inner fermentation cylinder, and meanwhile the pressing driving mechanism drives the containing cages to contract in the vertical direction; fermentation liquid in all the containing cages can be fully discharged under the combined action of centrifugal force and pressure from top to bottom, the fermentation liquid is output to the bottom end of the fermentation outer barrel through the filtering inner barrel to be discharged, clear water is injected into the fermentation outer barrel through the liquid pump, the next fermentation stage continues, the fermentation liquid can be completely emptied, and the fermentation efficiency is improved. The fermentation process in the fermentation equipment can be slowed down, growth of extra infectious microbes is avoided, excessive fermentation is avoided, accumulation of harmful substances in the fermentation raw materials is reduced, and the flavor and safety of the fermented fermentation raw materials can be more effectively guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of fermentation equipment, in particular to fermentation equipment and a microbial fermentation process for prepared dishes. Background Art

[0002] Fermentation equipment is an important tool for realizing the microbial fermentation process. They can be divided into many types according to their structures and functions. Common fermentation equipment includes fermenters (fermentation kettles), fermentation tanks (fermentation tanks), fermentation towers (fermentation tower tanks), fermentation membrane boxes and fermentation bags. The basic principle of fermentation equipment is to provide an environment suitable for the growth and metabolism of microorganisms under the conditions of controlling temperature, pH value, oxygen content and stirring. The main processes include the preparation of fermentation medium, inoculation of fermentation strains, regulation of the fermentation process, and separation and purification of fermentation liquid; Pre-prepared dishes refer to dishes that have been pre-treated and processed so that they can be eaten directly or after simple cooking. The application of fermentation technology in pre-prepared dishes can improve the flavor, texture and shelf life of the dishes, while increasing certain beneficial microorganisms and metabolites, such as lactic acid bacteria and vitamins. In the production process of pre-prepared dishes, vegetables are processed using the metabolism of microorganisms to improve their flavor, texture and shelf life. This technology is usually used to make traditional fermented vegetable products such as sauerkraut and kimchi.

[0003] During the fermentation process of pre-prepared dishes, conventional pre-prepared dish fermentation equipment mostly adopts a stacking fermentation method. During the fermentation process, due to the stacking of pre-prepared dishes, it is difficult to completely replace the fermentation water inside the pre-prepared dishes. The fermentation water stays in the pre-prepared dishes for a long time, which can easily lead to the growth of miscellaneous bacteria and accumulation of harmful substances inside the pre-prepared dishes, resulting in a decrease in the fermentation safety of the pre-prepared dishes. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a fermentation device and a microbial fermentation process for prepared dishes.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A fermentation device comprises a mounting bracket, wherein a fermentation outer cylinder is fixedly arranged on one side of the mounting bracket, a liquid storage tank is arranged inside the mounting bracket and at the bottom of the fermentation outer cylinder, a filter inner cylinder is arranged inside the fermentation outer cylinder, a plurality of holding cages are arranged inside the filter inner cylinder, and a rotating drive mechanism and a pressing drive mechanism are arranged on the top of the mounting bracket and at one side of the fermentation outer cylinder; materials to be fermented can be placed inside each holding cage, each holding cage is stacked in sequence from bottom to top inside the filter inner cylinder, each holding cage can slide up and down inside the filter inner cylinder, and each holding cage can extend and retract in the vertical direction; the liquid storage The box includes a clean water tank and a sewage tank. A water inlet is provided on one side of the top end of the fermentation outer cylinder, and a drain outlet is provided at the bottom end of the fermentation outer cylinder. The clean water tank can supply clean water from the water inlet to the inside of the fermentation outer cylinder through a liquid pump, and the fermentation liquid inside the fermentation inner cylinder can enter the sewage tank from the drain outlet; the liquid inside the fermentation outer cylinder can pass through the filter inner cylinder and each of the containing cages, and the rotating drive mechanism is respectively connected to each of the containing cages for transmission. The rotation of each of the containing cages can drive the filter inner cylinder to rotate inside the fermentation inner cylinder, and the pressing drive mechanism can generate pressure on the containing cages located at the top, driving each of the containing cages to shrink in the vertical direction.

[0006] Preferably, the containing cage comprises a top plate and a bottom plate, a plurality of top sleeves are arranged at the bottom end of the top plate, a plurality of bottom columns are arranged at the top end of the bottom plate, and a compression spring is arranged inside each of the top sleeves; a top filter cartridge is arranged at the bottom end of the top plate and inside each of the top sleeves, and a bottom filter cartridge is arranged at the top end of the bottom plate and inside each of the bottom columns.

[0007] Preferably, each of the bottom columns can extend into the interior of one of the top sleeves, and the top end of the bottom column abuts against the bottom end of the compression spring, and the bottom filter cartridge can extend into the interior of the top filter cartridge; after each containing cage is assembled, the bottom filter cartridge and the top filter cartridge always remain overlapped.

[0008] Preferably, the elastic coefficients and free lengths of the compression springs located in the same containing cage are equal; and when the compression springs located in different containing cages are subjected to the same compression force from top to bottom inside the filter inner cylinder, the elastic deformation generated by the compression springs located in different containing cages gradually decreases.

[0009] Preferably, the pressing drive mechanism includes a plurality of hydraulic telescopic rods and pressing ring plates, the movable ends of the respective hydraulic telescopic rods are fixed to the pressing ring plates, and the respective hydraulic telescopic rods can penetrate into the interior of the fermentation outer cylinder from above the fermentation outer cylinder; when the pressing ring plates move downward, they can contact with the top plate of the containing cage at the top, and generate pressure to each of the containing cages in turn from top to bottom.

[0010] Preferably, the filter inner cylinder includes a fixed outer frame and a plurality of filter screens, each of the filter screens is fixedly arranged inside the fixed outer frame, the diameter of the fixed outer frame is smaller than the inner wall diameter of the fermentation outer cylinder, and there is a cavity between the fixed outer frame and the inner wall of the fermentation outer cylinder; a plurality of sliding grooves are opened on the inner wall of the fixed outer frame, each of the top plates is provided with a top limit block on the outer side, each of the top limit blocks can be embedded in one of the sliding grooves, and each of the bottom plates is provided with a bottom limit block on the outer side, each of the bottom limit blocks can be embedded in one of the sliding grooves.

[0011] Preferably, the rotary drive mechanism includes a rotary drive motor and a drive shaft, and the drive shaft can penetrate into the interior of the fermentation outer cylinder from the top of the fermentation outer cylinder; the drive shaft can penetrate the top plate and the bottom plate of each of the containing cages respectively, and each of the top plate and each of the bottom plates can slide freely on the outside of the drive shaft along the axial direction of the drive shaft; the drive shaft can transmit rotation to each of the top plates and each of the bottom plates, and the rotary drive motor can output rotation through the drive shaft, and at the same time, limit the top limit blocks and the bottom limit blocks through each sliding groove, thereby driving each of the containing cages and the filter inner cylinder to rotate synchronously.

[0012] Preferably, an air pressure balancing mechanism is arranged at the top of the mounting bracket, and the air pressure balancing mechanism includes an air inlet pipe, an exhaust pipe and a water seal cylinder, and the air inlet pipe and the exhaust pipe are respectively connected to the top of the fermentation outer cylinder; the top of the water seal cylinder is open, and a treatment agent is arranged inside the water seal cylinder, and one end of the exhaust pipe away from the fermentation outer cylinder extends below the liquid surface of the water seal cylinder, and the gas discharged from the exhaust pipe can pass through the water seal cylinder and be discharged to the outside.

[0013] Preferably, a heating element is provided inside the fermentation outer cylinder, and the heating element can heat the inside of the fermentation outer cylinder; a control terminal is also provided on the top of the mounting bracket, and a pressure sensor and an acidity sensor are also provided inside the fermentation inner cylinder; the control terminal is signal-connected to the pressure sensor and the acidity sensor, and can open the drain outlet, start and stop the liquid pump, and open the exhaust pipe according to the air pressure detected by the pressure sensor and the acidity detected by the acidity sensor.

[0014] A microbial fermentation process for prepared dishes, using the above-mentioned fermentation equipment, comprises the following steps: First, the pre-prepared food ingredients that need to be fermented are placed in a plurality of holding cages in order according to the capacity of the holding cages, and the holding cages are stacked in the filter inner cylinder from bottom to top; Then, clean water is injected into the fermentation outer cylinder through a liquid pump, and a fermentation agent is added, and then the fermentation outer cylinder is sealed; After a fermentation stage is completed, the fermentation liquid inside the fermentation outer cylinder is discharged through the drain port; The rotating drive mechanism drives each holding cage and the filtering inner cylinder to rotate inside the fermentation inner cylinder, and the pressing drive mechanism drives each holding cage to contract in the vertical direction to fully discharge the fermentation liquid inside each holding cage; Then, clean water is injected into the fermentation outer cylinder through a liquid pump to continue the next fermentation stage; After the last fermentation stage is completed, the fermentation liquid in each holding cage is fully discharged, and then the fermentation outer cylinder is opened to take out the pre-prepared dish ingredients after fermentation.

[0015] Compared with the prior art, the present invention provides a fermentation device and a pre-prepared food microbial fermentation process, which has the following beneficial effects: 1. In this fermentation equipment, during each fermentation stage, the interior of the fermentation outer cylinder is in a static state. After one fermentation stage is completed, the fermentation liquid in the fermentation outer cylinder is first discharged through the drain port, and then the rotating drive mechanism drives each holding cage and the filtering inner cylinder to rotate inside the fermentation inner cylinder. While rotating, the pressing drive mechanism drives each holding cage to contract in the vertical direction, so that the fermentation liquid in each holding cage can be fully discharged through the combined action of centrifugal force and pressure from top to bottom, and output to the bottom end of the fermentation outer cylinder through the filtering inner cylinder for discharge, and clean water is injected into the fermentation outer cylinder through a liquid pump to continue the next fermentation stage, so as to be able to more completely drain the fermentation liquid, slow down the fermentation process inside the fermentation equipment, avoid the growth of additional bacteria, avoid excessive fermentation, reduce the accumulation of harmful substances inside the fermentation raw materials, and more effectively ensure the flavor and safety of the fermentation raw materials after fermentation.

[0016] 2. In this fermentation equipment, inside the filter inner cylinder, the top ends of the bottom columns are all kept inside the corresponding top sleeves, and the bottom filter cylinder and the top filter cylinder are always kept overlapping, so that the raw materials to be fermented can be confined inside the holding cage, so that under the drive of the movable ends of each hydraulic telescopic rod, the pressing ring plate can contact with the top plate of the holding cage at the top during the downward movement, and generate pressure to each holding cage from top to bottom, so as to generate a pressing force on the raw materials to be fermented inside each holding cage, and can squeeze out the fermentation water carried by the raw materials to be fermented while avoiding the loss of the raw materials to be fermented, and when the compression springs located in different holding cages are subjected to the same compression force from top to bottom inside the filter inner cylinder, the elastic deformation generated by the compression springs located in different holding cages gradually decreases, and the different compression springs can be set so that under the pressure increasing from top to bottom, the same compression degree of each holding cage can be relatively maintained, and the raw materials inside the holding cage located below can be effectively avoided from being over-compressed, thereby ensuring that the raw materials are avoided from being broken.

[0017] 3. This fermentation equipment can transmit rotation between the driving shaft and each top plate and each bottom plate, and each top limit block can be embedded in a sliding groove, and each bottom limit block can be embedded in a sliding groove, so that the rotary drive motor can output rotation through the driving shaft, and at the same time, through the limitation of each top limit block and each bottom limit block by each sliding groove, each holding cage and the filter inner cylinder are driven to rotate synchronously, so that each holding cage and the raw materials inside rotate synchronously, and the centrifugal force of the rotation can be coordinated with the pressing force of the pressing drive mechanism, so that the fermentation water carried by the raw materials can be fully squeezed out, so as to effectively avoid excessive fermentation and reduce the accumulation of harmful substances inside the fermented raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is one of the three-dimensional structural schematic diagrams of a fermentation device of the present invention; Figure 2 This is a second schematic diagram of the three-dimensional structure of a fermentation device of the present invention; Figure 3 A three-dimensional structural schematic diagram of the internal structure of a fermentation outer cylinder of a fermentation device of the present invention; Figure 4 It is a schematic diagram of the internal structure assembly of a fermentation outer cylinder of a fermentation device of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of a filtering inner cylinder of a fermentation device of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of a containing cage of a fermentation device of the present invention; Figure 7A cross-sectional view of a containing cage of a fermentation device of the present invention; Figure 8 The present invention is a schematic diagram of the assembly of a containing cage of a fermentation device.

[0019] In the figure: 1. mounting bracket; 2. fermentation outer cylinder; 21. water inlet; 22. drain outlet; 3. liquid storage tank; 31. clean water tank; 32. sewage tank; 33. liquid pump; 4. filter inner cylinder; 41. fixed outer frame; 411. sliding groove; 42. filter net; 5. holding cage; 51. top plate; 511. top sleeve; 512. compression spring; 513. top filter cylinder; 514. top limit block; 52. bottom plate; 521. bottom column; 522. bottom filter cylinder; 523. bottom limit block; 6. rotating drive mechanism; 61. rotating drive motor; 62. drive shaft; 7. pressing drive mechanism; 71. hydraulic telescopic rod; 72. pressing ring plate; 8. air pressure balance mechanism; 81. air inlet pipe; 82. exhaust pipe; 83. water seal cylinder. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in 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.

[0021] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes a fermentation equipment and a microbial fermentation process for pre-prepared dishes. Example

[0022] See also Figure 1-Figure 8A fermentation device comprises a mounting bracket 1, a fermentation outer cylinder 2 is fixedly arranged on one side of the mounting bracket 1, a liquid storage tank 3 is arranged inside the mounting bracket 1 and at the bottom of the fermentation outer cylinder 2, a filter inner cylinder 4 is arranged inside the fermentation outer cylinder 2, a plurality of holding cages 5 are arranged inside the filter inner cylinder 4, a rotating drive mechanism 6 and a pressing drive mechanism 7 are arranged on the top of the mounting bracket 1 and at one side of the fermentation outer cylinder 2; materials to be fermented can be placed inside each holding cage 5, each holding cage 5 is stacked from bottom to top inside the filter inner cylinder 4, each holding cage 5 can slide up and down inside the filter inner cylinder 4, and each holding cage 5 can be telescoped in the vertical direction; liquid storage tank 3 It includes a clean water tank 31 and a sewage tank 32. A water inlet 21 is provided on one side of the top of the fermentation outer cylinder 2, and a drain outlet 22 is provided at the bottom of the fermentation outer cylinder 2. The clean water tank 31 can supply clean water from the water inlet 21 to the inside of the fermentation outer cylinder 2 through a liquid pump 33, and the fermentation liquid inside the fermentation inner cylinder 2 can enter the sewage tank 32 from the drain outlet 22; the liquid inside the fermentation outer cylinder 2 can all pass through the filter inner cylinder 4 and each containing cage 5, and the rotating drive mechanism 6 is respectively connected to each containing cage 5 for transmission. The rotation of each containing cage 5 can drive the filter inner cylinder 4 to rotate inside the fermentation inner cylinder 2, and the pressing drive mechanism 7 can generate pressure on the containing cage 5 located at the top, driving each containing cage 5 to shrink in the vertical direction.

[0023] When in use, firstly, raw materials to be fermented (in specific use, the raw materials to be fermented are solid materials, such as vegetables, fruits, etc.) are sequentially placed into a plurality of containing cages 5 according to the capacity of the containing cages 5, and the containing cages 5 are sequentially stacked in the inner filter cylinder 4 from bottom to top; then, clean water is injected into the inner fermentation cylinder 2 through the liquid pump 33, and a fermentation agent (liquid or powder containing fermentation bacteria) is added, and then the rotation drive mechanism 6 and the pressing drive mechanism 7 are sequentially loaded, and the outer fermentation cylinder 2 is closed; In this fermentation equipment, a fermentation process is carried out between the fermentation agent and the raw materials to be fermented. The fermentation process of each batch of raw materials to be fermented includes several fermentation stages (the number and time of the fermentation stages are changed accordingly according to the actual fermentation agent and the type of materials. It is a common technical solution in this field and will not be described in detail here). In each fermentation stage, the inside of the fermentation outer cylinder 2 is in a static state. After a fermentation stage is completed, the fermentation liquid inside the fermentation outer cylinder 2 is first discharged through the drain port 22, and then the rotating drive mechanism 6 drives each holding cage 5 and the filtering inner cylinder 4 to rotate inside the fermentation inner cylinder 2. While rotating, the pressing drive mechanism 7 drives each holding cage 5 to shrink in the vertical direction, so that it can pass through the separation Under the combined action of centrifugal force and pressure from top to bottom, the fermentation liquid inside each holding cage 5 is fully discharged, and output to the bottom end of the fermentation outer cylinder 2 through the filtering inner cylinder 4 for discharge, and clean water is injected into the fermentation outer cylinder 2 through the liquid pump 33 to continue the next fermentation stage, so as to be able to more completely drain the fermentation liquid, so as to be able to slow down the fermentation process inside the fermentation equipment, avoid the growth of additional bacteria, avoid over-fermentation, reduce the accumulation of harmful substances inside the fermentation raw materials, and more effectively ensure the flavor and safety of the fermentation raw materials after fermentation. After the last fermentation stage is completed, the fermentation liquid inside each holding cage 5 is fully discharged, and the fermentation outer cylinder 2 is opened to take out the fermented raw materials after fermentation, thereby completing the fermentation process of this batch of raw materials. Example

[0024] See also Figure 1-Figure 4 , Figure 6-Figure 8 , which is different from the above-mentioned embodiments, is that the containing cage 5 comprises a top plate 51 and a bottom plate 52, a plurality of top sleeves 511 are arranged at the bottom end of the top plate 51, a plurality of bottom columns 521 are arranged at the top end of the bottom plate 52, and a compression spring 512 is arranged inside each top sleeve 511; a top filter cartridge 513 is arranged at the bottom end of the top plate 51 and inside each top sleeve 511, and a bottom filter cartridge 522 is arranged at the top end of the bottom plate 52 and inside each bottom column 521.

[0025] Each bottom column 521 can extend into a top sleeve 511, and the top end of the bottom column 521 abuts against the bottom end of the compression spring 512, and the bottom filter cartridge 522 can extend into the top filter cartridge 513; after each containing cage 5 is assembled, the bottom filter cartridge 522 and the top filter cartridge 513 always remain overlapped.

[0026] The elastic coefficients and free lengths of the compression springs 512 located in the same containing cage 5 are equal; from top to bottom inside the filter inner cylinder 4, when the compression springs 512 located in different containing cages 5 are subjected to the same compression force, the elastic deformation generated by the compression springs 512 located in different containing cages 5 gradually decreases.

[0027] The pressing drive mechanism 7 includes a plurality of hydraulic telescopic rods 71 ​​and a pressing ring plate 72. The movable end of each hydraulic telescopic rod 71 is fixed to the pressing ring plate 72. Each hydraulic telescopic rod 71 can penetrate into the interior of the fermentation outer cylinder 2 from the top of the fermentation outer cylinder 2. When the pressing ring plate 72 moves downward, it can contact the top plate 51 of the holding cage 5 at the top, and generate pressure to each holding cage 5 from top to bottom.

[0028] When in use, through the arrangement of the holding cage 5, after each holding cage 5 is assembled, each bottom column 521 can extend into a top sleeve 511, and the top end of the bottom column 521 abuts against the bottom end of the compression spring 512, and the bottom filter cartridge 522 can extend into the top filter cartridge 513, and inside the filter inner cylinder 4, the top end of the bottom column 521 is maintained in the corresponding top sleeve 511, and the bottom filter cartridge 522 and the top filter cartridge 513 are always overlapped, so that the raw materials to be fermented can be confined inside the holding cage 5, so that under the drive of the movable end of each hydraulic telescopic rod 71 to extend, the pressing ring plate 72 can contact with the top plate 51 of the holding cage 5 located at the top during the process of moving downward, and sequentially from top to bottom. Pressure is generated on each holding cage 5 so as to generate a compressive force on the raw materials to be fermented inside each holding cage 5, and the fermentation water carried by the raw materials to be fermented can be squeezed out while avoiding the loss of the raw materials to be fermented. When the compression springs 512 located inside different holding cages 5 are subjected to the same compression force from top to bottom inside the filtering inner cylinder 4, the elastic deformation generated by the compression springs 512 located inside different holding cages 5 gradually decreases. By arranging different compression springs 512, the same compression degree of each holding cage 5 can be relatively maintained under the pressure that increases successively from top to bottom, and the raw materials inside the holding cage 5 located below can be effectively prevented from being over-compressed, thereby ensuring that the raw materials are prevented from being broken. Example

[0029] See also Figure 1-Figure 8 The difference from the above embodiment is that the filtering inner cylinder 4 includes a fixed outer frame 41 and a plurality of filter screens 42, each filter screen 42 is fixedly arranged inside the fixed outer frame 41, the diameter of the fixed outer frame 41 is smaller than the inner wall diameter of the fermentation outer cylinder 2, and there is a cavity between the fixed outer frame 41 and the inner wall of the fermentation outer cylinder 2; a plurality of sliding grooves 411 are opened on the inner wall of the fixed outer frame 41, a top limit block 514 is arranged on the outer side of each top plate 51, and each top limit block 514 can be embedded in a sliding groove 411, and a bottom limit block 523 is arranged on the outer side of each bottom plate 52, and each bottom limit block 523 can be embedded in a sliding groove 411.

[0030] The rotary drive mechanism 6 includes a rotary drive motor 61 and a drive shaft 62. The drive shaft 62 can penetrate into the interior of the fermentation outer cylinder 2 from the top of the fermentation outer cylinder 2; the drive shaft 62 can penetrate the top plate 51 and the bottom plate 52 of each containing cage 5 respectively, and each top plate 51 and each bottom plate 52 can slide freely on the outside of the drive shaft 62 along the axial direction of the drive shaft 62; the drive shaft 62 and each top plate 51 and each bottom plate 52 can transmit rotation, the rotary drive motor 61 can output rotation through the drive shaft 62, and at the same time, through the limitation of each top limit block 514 and each bottom limit block 523 by each sliding groove 411, drive each containing cage 5 and the filter inner cylinder 4 to rotate synchronously.

[0031] When in use, since the driving shaft 62 can penetrate the top plate 51 and the bottom plate 52 of each containing cage 5 respectively, and each top plate 51 and each bottom plate 52 can slide freely on the outside of the driving shaft 62 along the axial direction of the driving shaft 62; the driving shaft 62 and each top plate 51 and each bottom plate 52 can transmit rotation, and at the same time, since a plurality of sliding grooves 411 are provided on the inner wall of the fixed outer frame 41, a top limit block 514 is provided on the outside of each top plate 51, and each top limit block 514 can be embedded in a sliding groove 411, and a bottom limit block 514 is provided on the outside of each bottom plate 52. 523, each bottom limit block 523 can be embedded in a sliding groove 411, so that the rotary drive motor 61 can output rotation through the drive shaft 62, and at the same time, through the limitation of each top limit block 514 and each bottom limit block 523 by each sliding groove 411, drive each holding cage 5 and the filtering inner tube 4 to rotate synchronously, so that each holding cage 5 and the raw materials inside rotate synchronously, and the centrifugal force of the rotation can cooperate with the pressing force of the pressing drive mechanism 7, so as to fully squeeze out the fermentation water carried by the raw materials, thereby effectively avoiding excessive fermentation and reducing the accumulation of harmful substances inside the fermented raw materials.

[0032] An air pressure balancing mechanism 8 is arranged at the top of the mounting bracket 1, and the air pressure balancing mechanism 8 includes an air inlet pipe 81, an exhaust pipe 82 and a water seal tube 83. The air inlet pipe 81 and the exhaust pipe 82 are respectively connected to the top of the fermentation outer tube 2; the top of the water seal tube 83 is open, and a treatment agent is arranged inside the water seal tube 83. One end of the exhaust pipe 82 away from the fermentation outer tube 2 extends below the liquid surface of the water seal tube 83, and the gas discharged from the exhaust pipe 82 can pass through the water seal tube 83 and be discharged to the outside.

[0033] When in use, through the setting of the air pressure balance mechanism 8, a one-way valve can be set on the air inlet pipe 81 (in actual use, the air inlet pipe 81 can be connected to an independent air supply device) and the exhaust pipe 82, so that air can be taken in and exhausted respectively, and when exhausting, through the setting of the water seal tube 83, the end of the exhaust pipe 82 away from the fermentation outer tube 2 extends below the liquid surface of the water seal tube 83, so that the water seal tube 83 can prevent the air from entering through the exhaust pipe 82, and at the same time, the exhaust gas can be treated by the treatment agent set inside the water seal tube 83 (the treatment agent is the treatment liquid corresponding to the gas generated by the corresponding fermentation raw materials and fermentation agents), so as to avoid the emission of polluted gases.

[0034] A heating element is provided inside the fermentation outer cylinder 2, and the heating element can heat the inside of the fermentation outer cylinder 2; a control terminal is also provided at the top of the mounting bracket 1, and a pressure sensor and an acidity sensor are also provided inside the fermentation inner cylinder 2. The control terminal is signal-connected with the pressure sensor and the acidity sensor, and can open the drain port 22, start and stop the liquid pump 33, and open the exhaust pipe 82 through the air pressure detected by the pressure sensor and the acidity detected by the acidity sensor.

[0035] In specific use, the detection technology of pressure sensor and acidity sensor is a common technical solution in the prior art. The air pressure detected by the pressure sensor and the acidity detected by the acidity sensor (the corresponding thresholds are common thresholds in the prior art such as 1.5 MPa and pH value less than 3.5), the means of opening the drain outlet 22, starting and stopping the liquid pump 33, and opening the exhaust pipe 82 are common solutions in the prior art, and the corresponding fermentation process can be controlled. Example

[0036] A microbial fermentation process for prepared dishes, using a fermentation device as described in any one of Embodiments 1 to 3, comprises the following steps: First, the pre-prepared food ingredients to be fermented are placed into a plurality of holding cages 5 in sequence according to the capacity of the holding cages 5, and the holding cages 5 are stacked in sequence from bottom to top inside the filter inner cylinder 4; Then, clean water is injected into the fermentation outer cylinder 2 through the liquid pump 33, and a fermentation agent is added, and then the fermentation outer cylinder 2 is sealed; After a fermentation stage is completed, the fermentation liquid inside the fermentation outer cylinder 2 is discharged through the drain port 22; The rotating drive mechanism 6 drives each of the holding cages 5 and the filtering inner cylinder 4 to rotate inside the fermentation inner cylinder 2, and the pressing drive mechanism 7 drives each of the holding cages 5 to contract in the vertical direction to fully discharge the fermentation liquid inside each of the holding cages 5; Then, clean water is injected into the fermentation outer cylinder 2 through the liquid pump 33 to continue the next fermentation stage; After the last fermentation stage is completed and the fermentation liquid in each containing cage 5 is fully discharged, the fermentation outer cylinder 2 is opened to take out the pre-prepared dish ingredients after fermentation.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fermentation device, characterized in that: It comprises a mounting bracket (1), a fermentation outer cylinder (2) is fixedly arranged on one side of the mounting bracket (1), a liquid storage tank (3) is arranged inside the mounting bracket (1) and at the bottom of the fermentation outer cylinder (2), a filter inner cylinder (4) is arranged inside the fermentation outer cylinder (2), a plurality of containing cages (5) are arranged inside the filter inner cylinder (4), and a rotation drive mechanism (6) and a pressing drive mechanism (7) are arranged on the top of the mounting bracket (1) and at one side of the fermentation outer cylinder (2); Materials to be fermented can be placed inside each of the containing cages (5), and each of the containing cages (5) is stacked and arranged inside the filtering inner cylinder (4) in sequence from bottom to top, and each of the containing cages (5) can slide up and down inside the filtering inner cylinder (4), and each of the containing cages (5) can be extended and retracted in the vertical direction; The liquid storage tank (3) comprises a clean water tank (31) and a sewage tank (32); a water inlet (21) is provided at one side of the top end of the fermentation outer cylinder (2); a water outlet (22) is provided at the bottom end of the fermentation outer cylinder (2); the clean water tank (31) can supply clean water from the water inlet (21) to the inside of the fermentation outer cylinder (2) via a liquid pump (33); and the fermentation liquid inside the fermentation inner cylinder (2) can enter the sewage tank (32) from the water outlet (22); The liquid inside the fermentation outer cylinder (2) can pass through the filtering inner cylinder (4) and each of the containing cages (5). The rotating drive mechanism (6) is respectively connected to each of the containing cages (5) for transmission. The rotation of each of the containing cages (5) can drive the filtering inner cylinder (4) to rotate inside the fermentation inner cylinder (2). The pressing drive mechanism (7) can generate pressure on the containing cage (5) located at the top, thereby driving each of the containing cages (5) to contract in the vertical direction.

2. A fermentation device according to claim 1, characterized in that: The containing cage (5) comprises a top plate (51) and a bottom plate (52); a plurality of top sleeves (511) are arranged at the bottom end of the top plate (51); a plurality of bottom columns (521) are arranged at the top end of the bottom plate (52); and a compression spring (512) is arranged inside each of the top sleeves (511); A top filter cartridge (513) is provided at the bottom end of the top plate (51) and located inside each of the top sleeves (511), and a bottom filter cartridge (522) is provided at the top end of the bottom plate (52) and located inside each of the bottom columns (521).

3. A fermentation device according to claim 2, characterized in that: Each of the bottom columns (521) can extend into one of the top sleeves (511), and the top end of the bottom column (521) abuts against the bottom end of the compression spring (512), and the bottom filter cartridge (522) can extend into the top filter cartridge (513); After each containing cage (5) is assembled, the bottom filter cartridge (522) and the top filter cartridge (513) always remain overlapped.

4. A fermentation device according to claim 3, characterized in that: The elastic coefficients and free lengths of the compression springs (512) located inside the same containing cage (5) are equal; In the filter inner cylinder (4), along the direction from top to bottom, when the compression springs (512) located in different containing cages (5) are subjected to the same compression force, the elastic deformation generated by the compression springs (512) located in different containing cages (5) gradually decreases.

5. A fermentation device according to claim 4, characterized in that: The pressing drive mechanism (7) comprises a plurality of hydraulic telescopic rods (71) and a pressing ring plate (72), wherein the movable end of each hydraulic telescopic rod (71) is fixed to the pressing ring plate (72), and each hydraulic telescopic rod (71) is capable of penetrating into the interior of the fermentation outer cylinder (2) from above the fermentation outer cylinder (2); During the downward movement, the pressing ring plate (72) can come into contact with the top plate (51) of the containing cage (5) located at the top, and generate pressure on each containing cage (5) in sequence from top to bottom.

6. A fermentation device according to claim 2, characterized in that: The filtering inner cylinder (4) comprises a fixed outer frame (41) and a plurality of filtering screens (42), each of the filtering screens (42) being fixedly arranged inside the fixed outer frame (41), the diameter of the fixed outer frame (41) being smaller than the inner wall diameter of the fermentation outer cylinder (2), and a cavity being provided between the fixed outer frame (41) and the inner wall of the fermentation outer cylinder (2); The inner wall of the fixed outer frame (41) is provided with a plurality of sliding grooves (411); the outer side of each of the top panels (51) is provided with a top limit block (514); each of the top limit blocks (514) can be embedded in one of the sliding grooves (411); the outer side of each of the bottom panels (52) is provided with a bottom limit block (523); each of the bottom limit blocks (523) can be embedded in one of the sliding grooves (411).

7. A fermentation device according to claim 6, characterized in that: The rotary drive mechanism (6) comprises a rotary drive motor (61) and a drive shaft (62), wherein the drive shaft (62) is capable of penetrating from the top of the fermentation outer cylinder (2) into the interior of the fermentation outer cylinder (2); The driving shaft (62) can respectively penetrate the top plate (51) and the bottom plate (52) of each of the containing cages (5), and each of the top plates (51) and each of the bottom plates (52) can slide freely on the outside of the driving shaft (62) along the axial direction of the driving shaft (62); The driving shaft (62) can transmit rotation to each of the top plates (51) and each of the bottom plates (52); the rotary drive motor (61) can output rotation via the driving shaft (62) and simultaneously limit the position of each of the top limit blocks (514) and each of the bottom limit blocks (523) via each of the sliding grooves (411), thereby driving each of the containing cages (5) and the filter inner cylinder (4) to rotate synchronously.

8. A fermentation device according to claim 1, characterized in that: An air pressure balancing mechanism (8) is disposed at the top end of the mounting bracket (1), the air pressure balancing mechanism (8) comprising an air intake pipe (81), an air exhaust pipe (82) and a water seal cylinder (83), the air intake pipe (81) and the air exhaust pipe (82) being respectively connected to the top end of the fermentation outer cylinder (2); The top end of the water seal tube (83) is open, and a treatment agent is arranged inside the water seal tube (83). The end of the exhaust pipe (82) away from the fermentation outer tube (2) extends below the liquid surface of the water seal tube (83), and the gas discharged from the exhaust pipe (82) can pass through the water seal tube (83) and be discharged to the outside.

9. A fermentation device according to claim 8, characterized in that: A heating element is arranged inside the fermentation outer cylinder (2), and the heating element is capable of heating the inside of the fermentation outer cylinder (2); A control terminal is also provided at the top of the mounting bracket (1), and a pressure sensor and an acidity sensor are also provided inside the fermentation inner cylinder (2). The control terminal is signal-connected to the pressure sensor and the acidity sensor, and can open the drain port (22), start and stop the liquid pump (33), and open the exhaust pipe (82) according to the air pressure detected by the pressure sensor and the acidity detected by the acidity sensor.

10. A microbial fermentation process for prepared dishes, characterized in that: A fermentation device as claimed in any one of claims 1 to 9 is used, comprising the following steps: First, the pre-prepared food ingredients to be fermented are placed in a plurality of holding cages (5) in order according to the capacity of the holding cages (5), and the holding cages (5) are stacked in order from bottom to top inside the filtering inner cylinder (4); Then, clean water is injected into the fermentation outer cylinder (2) through a liquid pump (33), and a fermentation agent is added, and then the fermentation outer cylinder (2) is sealed; After a fermentation stage is completed, the fermentation liquid inside the fermentation outer cylinder (2) is discharged through the drainage port (22); The rotating drive mechanism (6) drives each of the containing cages (5) and the filtering inner cylinder (4) to rotate inside the fermentation inner cylinder (2), and the pressing drive mechanism (7) drives each of the containing cages (5) to contract in the vertical direction, so that the fermentation liquid inside each of the containing cages (5) is fully discharged; Then, clean water is injected into the inner part of the fermentation outer cylinder (2) through the liquid pump (33) to continue the next fermentation stage; After the last fermentation stage is completed and the fermentation liquid in each containing cage (5) is fully discharged, the fermentation outer cylinder (2) is opened to take out the fermented pre-prepared food ingredients.

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