Microbial fermentation device and method for yeast for making hard liquor

Abstract

The invention belongs to the field of microbial fermentation, and particularly relates to a yeast microbial fermentation device and method.The yeast microbial fermentation device comprises an assembly base, a sealing base, supporting arms, a supporting top plate and a stirring and taking mechanism, and the stirring and taking mechanism is installed at the top of the sealing base and located between the two supporting arms; the stirring material taking mechanism comprises a driving rod, partition plates, discharging bins and a driving assembly, one end of the driving rod is rotationally connected to the top of the sealing base, one ends of the multiple partition plates are fixedly connected to the outer wall of the driving rod in a circumferential array mode, the multiple discharging bins are arranged between the two partition plates respectively, and the driving assembly is installed at the top of the supporting top plate; the output end of the driving assembly is fixedly connected with the other end of the driving rod. Therefore, through cooperation of the structural modules, the problems that fermentation batch separation cannot be achieved, stirring dead angles exist, materials are difficult to take, and the automation degree is low are effectively solved, and the accuracy, continuity and intelligent level of Maotai-flavor yeast fermentation are comprehensively improved.

Description

Technical Field

[0001] This invention belongs to the field of microbial fermentation, and in particular relates to a Daqu (a type of starter culture) microbial fermentation device and method. Background Technology

[0002] As an important representative of traditional Chinese liquor, Maotai-flavor liquor is known for its brewing process characterized by "high-temperature koji making, high-temperature stacking fermentation, and high-temperature distillation." Among these processes, koji preparation is one of the most critical steps, directly affecting the construction of the microbial system and the generation of flavor precursors. Currently, koji fermentation generally adopts a solid-state stacking method. Based on manual turning and natural ventilation, the growth of microbial communities and the accumulation of beneficial metabolites are promoted by controlling the ambient temperature, humidity, and frequency of turning. In addition to traditional processes, some distilleries have introduced semi-mechanized or automated fermentation devices such as box-type, tank-type, and koji-turning devices. By configuring hot air circulation systems, humidity control units, and koji-turning mechanisms, they can achieve preliminary control of the fermentation environment, improve koji making efficiency and consistency of koji. These devices have reduced the intensity of manual labor to a certain extent and can be adapted to standardized mass production. However, existing microbial fermentation devices for Daqu still have many shortcomings. First, most devices adopt an integrated closed structure, which makes it impossible to achieve modular and zoned management inside the fermentation chamber. This results in the inability to feed and control the fermentation materials of different fermentation cycles in batches, which limits the flexibility of the fermentation process. Second, the material unloading process relies on manual labor or unloading the entire chamber by opening the lid, which is cumbersome and poses risks such as damaging the structure of the fermentation blocks and introducing contaminants. Summary of the Invention

[0003] The purpose of this invention is to address the numerous shortcomings of existing microbial fermentation devices for Daqu (a type of starter culture) as described in the background section. First, most devices adopt an integrated closed structure, which makes it impossible to achieve modular and zoned management within the fermentation chamber. This results in the inability to batch and independently control the fermentation materials for different fermentation cycles, limiting the flexibility of the fermentation process. Second, the material unloading process relies on manual labor or unloading the entire chamber by opening the lid, which is cumbersome and poses risks such as damaging the structure of the fermentation blocks and introducing contaminants. The invention provides a microbial fermentation device and method for Daqu.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a fermentation device and method for Daqu microorganisms, comprising an assembly base, a sealing base, support arms, a support top plate, and a stirring and material-collecting mechanism. The sealing base is fixedly connected to the top of the assembly base, the support arms are symmetrically fixedly connected to the top of the sealing base, the support top plate is fixedly connected to the top of the support arms, and the stirring and material-collecting mechanism is installed on the top of the sealing base and located between the two support arms. The stirring and material-collecting mechanism includes a drive rod, a partition plate, a discharge bin, and a drive assembly. One end of the drive rod is rotatably connected to the top of the sealing base, one end of a plurality of partition plates is fixedly connected to the outer wall of the drive rod in a circumferential array, a plurality of discharge bins are respectively disposed between two partition plates, the drive assembly is installed on the top of the support top plate, and the output end of the drive assembly is fixedly connected to the other end of the drive rod.

[0005] This invention discloses a microbial fermentation device and method for Daqu (a type of starter culture). A drive rod rotates the target feeding hopper to a notch in the protective sleeve. An electromagnet in the material handling assembly magnetically connects with a magnetic suction head on the sealed outer plate, and the rotating drive arm completes precise unloading. This avoids the pollution and efficiency problems associated with traditional full-hopper opening. Through the coordinated operation of the aforementioned structural modules, it effectively solves problems such as the inability to separate fermentation batches, dead zones in stirring, difficulty in material handling, and low automation, comprehensively improving the precision, continuity, and intelligence of Daqu fermentation.

[0006] Furthermore, the discharge hopper includes a sealing sleeve, a scraper, and a sealing outer plate. The sealing sleeve is embedded between the drive rod and two adjacent partition plates, and the bottom of the sealing sleeve has an open structure. The scraper is fixedly connected to the bottom of the inner wall of the sealing sleeve, and the sealing outer plate is fixedly connected to the outer wall of the sealing sleeve.

[0007] Furthermore, the drive assembly includes a placement platform and a first drive device, wherein the placement platform is fixedly connected to the top of the support top plate, the first drive device is mounted on the top of the placement platform, and the output end of the first drive device is fixedly connected to the other end of the drive rod.

[0008] Furthermore, it also includes a material handling assembly, which includes a second driving device, a driving arm, and an electromagnet. The outer wall of the assembly base is provided with an L-shaped support platform. The second driving device is installed on the outer wall of the L-shaped support platform. The output end of the second driving device passes through the outer wall of the L-shaped support platform and is fixedly connected to one end of the driving arm. The electromagnet is fixedly connected to the other end of the driving arm. A magnetic suction head is fixedly connected to the outer wall of the sealing outer plate. The electromagnet is magnetically connected to the magnetic suction head.

[0009] Furthermore, a support sleeve plate is fixedly sleeved on the outer wall of the support arm, and one end of the connecting arm is rotatably connected to the support sleeve plate via a torsion spring. The other end of the connecting arm is rotatably connected to a protective plate, and the inner wall of the protective plate is in close contact with the outer wall of the sealing outer plate.

[0010] Furthermore, a protective sleeve plate is fixedly connected to the top of the sealing base, and the outer walls of the plurality of sealing outer plates are attached to the inner wall of the protective sleeve plate. The protective sleeve plate has a notch on one side opposite the L-shaped support platform.

[0011] Furthermore, a sealing cover is slidably sleeved on the drive rod, and an air inlet and an air outlet are installed on the sealing cover.

[0012] A method for microbial fermentation of Daqu (a type of starter culture) includes the following steps: S1. Material Preparation: Based on the type of fermentation raw materials and fermentation cycle, the raw materials are sequentially placed into multiple feeding bins. Each feeding bin includes a sealing sleeve, a scraper, and a sealing outer plate, which are inserted between two adjacent partition plates. Ensure that the outer wall of the sealing outer plate is tightly attached to the inner wall of the protective sleeve. If temperature and humidity regulation is required, a temperature control system can be connected through the air inlet and outlet on the sealing cover. S2. Start the stirring mechanism and the first drive device. The drive output end drives the drive rod to rotate. The rotation of the drive rod causes multiple feeding bins to move in a circular motion around the central axis. During the stirring process, the raw materials inside each feeding bin are disturbed by the bottom scraper, which enhances the uniformity of fermentation. The scraper is fixedly connected to the bottom of the inner wall of the sealing sleeve to effectively scrape the bottom raw materials and avoid residue and adhesion. S3. Time-based management and targeted material handling: Based on the fermentation time schedule of raw materials in each discharge silo, the system monitors whether the raw materials have reached the optimal fermentation period. Once this is achieved, the drive rod rotates, moving the target discharge silo (where fermentation is complete) to the position corresponding to the notch in the protective sleeve. The second drive device is then activated, its output driving the drive arm to rotate. The electromagnet at the front of the drive arm engages with the magnetic suction head of the target discharge silo. The second drive device is then activated to retract the drive arm, causing the discharge silo to exit the fermentation chamber entirely. During this exit process, a scraper removes residual material from the bottom, assisting in unloading. S4. Repeated use: After unloading, the discharge hopper can be cleaned and refilled with new raw materials. Other discharge hoppers that are still fermenting continue to be stirred by the drive component until the next round of timed material collection begins. The entire fermentation process achieves a closed-loop operation of batch separation, directional stirring, precise feeding and batch discharge.

[0013] Compared with existing technologies, the advantages of this Daqu microbial fermentation device and method are as follows: 1. This invention utilizes a rotating agitation structure comprised of a drive rod and a circumferentially arrayed, fixedly connected partition plate. This structure enables multiple feeding hoppers to rotate synchronously under the action of the drive assembly, continuously agitating the raw materials within the hoppers during fermentation. Combined with a scraper located at the bottom of the inner wall of the sealing sleeve, it effectively scrapes the inner wall of the sealing base during rotation, preventing the raw materials from depositing, adhering, or clumping together. This structure not only improves the uniformity of heat and gas exchange during fermentation but also significantly enhances the metabolic activity of microorganisms in a solid-state environment, thereby solving problems such as numerous fermentation dead zones, insufficient mixing, and significant raw material waste inherent in traditional manual turning or static fermentation. 2. This invention utilizes a directional material-grabbing assembly comprised of a second driving device, a driving arm, and an electromagnet. After fermentation in the feeding hopper is complete, the hopper is rotated to a pre-set notch on the protective cover. The electromagnet then attracts a magnetic suction head on the sealed outer plate, enabling precise grabbing and smooth removal of a single hopper. This structure avoids the operational complexity, high contamination risk, and inability to manage batches associated with traditional fermentation devices that require opening the entire hopper for material removal. It effectively improves the system's intelligence level and the safety of the material-grabbing process, enabling flexible management and time-segmented processing of raw materials at different fermentation stages in the production of soy sauce-flavored koji. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a Daqu microbial fermentation device and method provided by the present invention; Figure 2 This is a schematic diagram of the material handling component of a microbial fermentation device and method for Daqu (a type of Chinese liquor) provided by the present invention; Figure 3 This is a schematic diagram of the material feeding hopper of a microbial fermentation device and method for Daqu (a type of starter culture) provided by the present invention; Figure 4 This is a schematic diagram of the protective sleeve of a Daqu microbial fermentation device and method provided by the present invention; Figure 5 This invention provides a microbial fermentation device and method for Daqu (a type of starter culture). Figure 4 A magnified structural diagram of part A in the middle.

[0015] As shown in the figure: 1. Assembly base; 2. Sealed base; 21. Protective sleeve; 3. Support arm; 31. Support sleeve; 32. Connecting arm; 33. Protective plate; 4. Support top plate; 5. Agitating and picking mechanism; 51. Drive rod; 52. Divider plate; 53. Discharge bin; 531. Sealing sleeve; 532. Scraper; 533. Sealing outer plate; 5331. Magnetic suction head; 54. Drive assembly; 541. Placement platform; 542. First drive device; 6. Picking assembly; 61. Second drive device; 62. Drive arm; 63. Electromagnet. Detailed Implementation

[0016] The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0017] like Figures 1-5 As shown, a fermentation device and method for Daqu microorganisms includes an assembly base 1, a sealing base 2, support arms 3, a support top plate 4, and a stirring and material-collecting mechanism 5. The sealing base 2 is fixedly connected to the top of the assembly base 1, the support arms 3 are symmetrically fixedly connected to the top of the sealing base 2, the support top plate 4 is fixedly connected to the top of the support arms 3, and the stirring and material-collecting mechanism 5 is installed on the top of the sealing base 2 and located between the two support arms 3. The stirring and material-collecting mechanism 5 includes a drive rod 51, a partition plate 52, a discharge bin 53, and a drive assembly 54.

[0018] One end of the drive rod 51 is rotatably connected to the top of the sealing base 2, one end of multiple partition plates 52 is fixedly connected to the outer wall of the drive rod 51 in a circumferential array, and multiple discharge bins 53 are respectively arranged between two partition plates 52.

[0019] It should be noted that, in this embodiment, one end of the drive rod 51 is rotatably connected to the top of the sealed base 2, used to drive the entire feeding mechanism to rotate, thereby achieving uniform disturbance of the raw materials. Multiple partition plates 52 are fixedly connected to the outer wall of the drive rod 51 in a circumferential array, which not only ensures structural stability but also facilitates the construction of multiple independent fermentation units, avoiding cross-influence during fermentation. Multiple feeding chambers 53 are respectively installed between two adjacent partition plates 52, each forming an independent, sealed fermentation chamber. Different parameters can be set according to different fermentation raw materials to achieve batch control and precise fermentation.

[0020] The drive assembly 54 is mounted on the top of the supporting top plate 4, and the output end of the drive assembly 54 is fixedly connected to the other end of the drive rod 51. It should be noted that the drive assembly 54 described in this embodiment is installed on top of the supporting top plate 4, effectively freeing up bottom space through its high-position layout, facilitating the rotation of the feeding hopper 53 and the agitation of the bottom raw materials. The output end of the drive assembly 54 is fixedly connected to the other end of the drive rod 51, ensuring that the driving force is directly and efficiently transmitted to the rotating mechanism, improving the overall operating response speed and stability. This structural layout is simple and compact, facilitating the inspection, maintenance, and speed control of the drive assembly 54, while also contributing to the overall structural stress balance and the long-term reliability of the equipment.

[0021] Specifically, a stable support frame is formed by assembling a base 1, a sealed base 2, support arms 3, and a support top plate 4. The stirring and material-collecting mechanism 5 is located on top of the sealed base 2 and embedded between two support arms 3, realizing centralized stirring and modular material collection of the raw materials placed inside the device. One end of the drive rod 51 is rotatably connected to the sealed base 2, and the other end is fixedly connected to the output end of the drive component 54 installed on the support top plate 4. The drive component 54 drives the drive rod 51 to rotate, causing multiple partition plates 52 connected in a circular array on its outer wall to rotate synchronously, thereby driving multiple discharge bins 53 set between adjacent partition plates 52 to perform circumferential disturbance, effectively stirring the fermentation raw materials and promoting uniform distribution of heat and gas. This device realizes the separate fermentation of raw materials with different fermentation cycles through the modular discharge bin 53 design, and realizes centralized stirring and directional control through the central drive mechanism. It effectively solves the problems of batch management, uneven stirring, low efficiency of manual material collection, and high risk of contamination in the traditional soy sauce-flavored liquor koji making process, and improves the automation level and fermentation control accuracy of the koji making process.

[0022] Furthermore, such as Figures 1-5 As shown, the discharge bin 53 includes a sealing sleeve 531, a scraper 532, and a sealing outer plate 533. The sealing sleeve 531 is embedded between the drive rod 51 and two adjacent partition plates 52, and the bottom of the sealing sleeve 531 is an open structure. The scraper 532 is fixedly connected to the bottom of the inner wall of the sealing sleeve 531, and the sealing outer plate 533 is fixedly connected to the outer wall of the sealing sleeve 531.

[0023] It should be noted that, in this embodiment, the material discharge bin 53 is disposed between the drive rod 51 and two adjacent partition plates 52 via a sealing sleeve 531, forming a stable annular nested structure. The bottom features an open design, which facilitates the free flow and agitation of the raw materials during fermentation and stirring, thereby improving fermentation efficiency. The scraper 532 is installed on the bottom inner wall of the sealing sleeve 531, and can scrape against the inner surface of the sealing base during drive rotation, preventing material accumulation and residue, ensuring thorough stirring and cleanliness within the bin. The sealing outer plate 533 is encapsulated outside the sealing sleeve 531, providing not only good sealing performance but also facilitating cooperation with the magnetic suction structure of the material handling device, enabling rapid positioning and precise unloading after fermentation, effectively improving the device's ease of cleaning and continuous fermentation capability.

[0024] Furthermore, such as Figures 1-5 As shown, the drive assembly 54 includes a placement platform 541 and a first drive device 542. The placement platform 541 is fixedly connected to the top of the support top plate 4, and the first drive device 542 is mounted on the top of the placement platform 541. The output end of the first drive device 542 is fixedly connected to the other end of the drive rod 51.

[0025] It should be noted that the first driving device 542 described in this embodiment is a motor. The driving assembly 54 includes a placement platform 541 fixedly mounted on the top of the supporting top plate 4 and the first driving device 542 mounted on it. This high-level centralized arrangement effectively saves lower space and facilitates the rotation and material handling of the feeding hopper 53. The first driving device 542 uses an adjustable speed motor structure, with its output end fixedly connected to the other end of the drive rod 51, ensuring stable and efficient power transmission. The stirring frequency can be adjusted according to different fermentation intensity requirements. This design is not only compact and reliable in operation, but also facilitates later maintenance and repair, as well as flexible setting of operating parameters, improving the overall automation control level and operational adaptability of the machine.

[0026] Furthermore, such as Figures 1-5 As shown, it also includes a material handling assembly 6, which includes a second driving device 61, a driving arm 62, and an electromagnet 63. An L-shaped support platform is provided on the outer wall of the assembly base 1. The second driving device 61 is installed on the outer wall of the L-shaped support platform. The output end of the second driving device 61 passes through the outer wall of the L-shaped support platform and is fixedly connected to one end of the driving arm 62. The electromagnet 63 is fixedly connected to the other end of the driving arm 62. A magnetic suction head 5331 is fixedly connected to the outer wall of the sealing outer plate 533. The electromagnet 63 is magnetically connected to the magnetic suction head 5331.

[0027] It should be noted that the second driving device 61 described in this embodiment is a cylinder. The material handling component 6 uses an L-shaped support platform on the outer wall of the assembly base 1 to stably install the second driving device 61 on its outer side, achieving precise control of the driving arm 62, avoiding interference with the main fermentation area, and improving structural compactness and operational safety. The output end of the second driving device 61 passes through the L-shaped support platform and is fixedly connected to one end of the driving arm 62. The electromagnet 63 connected to the other end can achieve precise extension, retraction, and rotation, ensuring rapid and stable adsorption with the magnetic suction head 5331 on the target material discharge bin 53. This structure not only simplifies the material handling operation process but also significantly improves the extraction efficiency and modular management capabilities after fermentation, avoids the risk of contamination caused by manual intervention, and realizes intelligent and unmanned material handling control during the fermentation process.

[0028] Furthermore, such as Figures 1-5 As shown, a support sleeve plate 31 is fixedly sleeved on the outer wall of the support arm 3. One end of the connecting arm 32 is rotatably connected to the support sleeve plate 31 via a torsion spring. The other end of the connecting arm 32 is rotatably connected to a protective plate 33. The inner wall of the protective plate 33 is in close contact with the outer wall of the sealing outer plate 533.

[0029] It should be noted that, in this embodiment, the outer wall of the support arm 3 is fixedly fitted with a support sleeve 31. This structure provides a stable mounting base for the protective component and reserves rotation space, effectively preventing the device from loosening due to structural vibration or driving disturbance. The connecting arm 32 is rotatably connected to the support sleeve 31 using a torsion spring, which not only gives the protective structure an elastic return function, but also enables adaptive swing adjustment during the rotation or removal of the discharge bin 53, improving the reliability of the sealing fit.

[0030] Furthermore, such as Figures 1-5 As shown, a protective sleeve plate 21 is fixedly connected to the top of the sealing base 2, and the outer walls of multiple sealing outer plates 533 are attached to the inner wall of the protective sleeve plate 21. The protective sleeve plate 21 has a notch on one side opposite the L-shaped support platform.

[0031] It should be noted that the top of the sealing base 2 described in this embodiment is fixedly connected to a protective sleeve 21, which is used to form a closed protective space during fermentation, thereby stabilizing the fermentation environment and improving safety. The outer walls of multiple sealing outer plates 533 are fitted to the inner wall of the protective sleeve 21 to ensure that each discharge bin 53 maintains good guidance and sealing during rotation, preventing air leakage or fermentation runaway due to shaking or misalignment. The protective sleeve 21 has a notch on the side near the L-shaped support platform to provide a directional exposure window when the discharge bin 53 rotates to this position, facilitating precise docking and adsorption operations of the material receiving component 6, and achieving efficient connection between intelligent unloading and closed protection.

[0032] Furthermore, such as Figures 1-5 As shown, a sealing cover is slidably sleeved on the drive rod 51, and an air inlet and an air outlet are installed on the sealing cover.

[0033] It should be noted that the drive rod 51 described in this embodiment is slidably fitted with a sealing cover plate, which can be adjusted up and down according to the fermentation needs to partially seal the stirring area, effectively suppressing excessive heat and moisture loss, while preventing external contaminants from entering the fermentation chamber. The air inlet and exhaust port on the sealing cover plate can be connected to the temperature and humidity control system respectively. The air inlet introduces fresh air to meet the growth requirements of aerobic bacteria, and the exhaust port promptly discharges carbon dioxide and excess moisture, realizing dynamic adjustment of the fermentation environment. This structure combines sealing and ventilation, improving the accuracy of temperature and humidity control of the equipment, helping to form a suitable and stable ecological environment for microorganisms, thereby ensuring the continuity and consistency of the fermentation process.

[0034] A method for microbial fermentation of Daqu (a type of starter culture) includes the following steps: S1. Material preparation: According to the different types of fermentation raw materials and fermentation cycles, the raw materials are sequentially placed into multiple feeding bins 53. Each feeding bin 53 includes a sealing sleeve 531, a scraper 532, and a sealing outer plate 533, which are inserted between two adjacent partition plates 52 to ensure that the outer wall of the sealing outer plate 533 is tightly attached to the inner wall of the protective sleeve 21. If there is a need for temperature and humidity regulation, a temperature control system can be connected through the air inlet and exhaust outlet on the sealing cover. S2. Start the stirring mechanism and activate the first drive device 542. The drive output end drives the drive rod 51 to rotate. The rotation of the drive rod 51 causes multiple feeding bins 53 to move in a circular motion around the central axis. During the stirring process, the raw materials inside each feeding bin 53 are disturbed by the bottom scraper 532, which enhances the uniformity of fermentation. The scraper 532 is fixedly connected to the bottom of the inner wall of the sealing sleeve 531 to effectively scrape the bottom raw materials and avoid residue and adhesion. S3. Time-sharing management and targeted material handling: Based on the fermentation time schedule of the raw materials in each discharge bin 53, monitor whether they have reached the optimal fermentation period, start the drive rod 51 to rotate, and move the target discharge bin 53 where fermentation has been completed to the position corresponding to the notch in the protective sleeve plate 21. Start the second drive device 61, whose output end drives the drive arm 62 to rotate. The electromagnet 63 at the front end of the drive arm 62 is attracted and engaged with the magnetic suction head 5331 of the target discharge bin 53. Start the second drive device 61 to retract the drive arm 62, and drive the discharge bin 53 out of the fermentation chamber as a whole. During the exit process, the scraper 532 plays a role in scraping off the bottom residue to assist in unloading. S5. After unloading, the discharge bin 53 can be cleaned and refilled with new raw materials. Other discharge bins 53 that are still fermenting continue to be stirred by the drive component 54 until the next round of timed material collection begins. The entire fermentation process achieves a closed-loop operation of batch separation, directional stirring, precise feeding and batch discharge.

[0035] The working principle of this invention is as follows: The system employs a multi-module rotatable agitation structure consisting of a drive rod 51, a partition plate 52, a discharge bin 53, and a drive assembly 54. This structure is combined with an electromagnetic directional material handling system consisting of a second drive device 61, a drive arm 62, and an electromagnet 63. The drive assembly 54 drives the drive rod 51 to rotate, causing multiple discharge bins 53 arranged in a circular array to move synchronously in a circular motion within the sealed base 2. This achieves integrated operation of agitation, fermentation, and material handling functions. Each discharge bin 53 consists of a sealing sleeve 531, a scraper 532, and a sealing outer plate 533, embedded between the drive rod 51 and the adjacent partition plate 52. The rotation of the first drive device 542 drives periodic agitation, enhancing raw material disturbance and cleaning the bottom residue with the scraper 532, thus improving fermentation uniformity and cleanliness. After fermentation in a specific bin is complete, the drive rod 51 rotates the target discharge bin 53 to the notch in the protective sleeve 21. The electromagnet 63 in the material handling component 6 magnetically connects with the magnetic head 5331 on the sealing outer plate 533, and the drive arm 62 rotates to complete precise unloading. This avoids the pollution and efficiency problems associated with traditional bin-opening. Through the coordinated operation of these structural modules, problems such as the inability to separate fermentation batches, dead zones in stirring, difficulty in material handling, and low automation are effectively solved, comprehensively improving the precision, continuity, and intelligence of the fermentation of soy sauce-flavored koji.

[0036] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A microbial fermentation device for Daqu (a type of starter culture), characterized in that, The assembly includes an assembly base (1), a sealing base (2), a support arm (3), a support top plate (4), and a stirring and material-taking mechanism (5). The sealing base (2) is fixedly connected to the top of the assembly base (1), the support arm (3) is symmetrically fixedly connected to the top of the sealing base (2), the support top plate (4) is fixedly connected to the top of the support arm (3), and the stirring and material-taking mechanism (5) is installed on the top of the sealing base (2) and located between the two support arms (3). The stirring and feeding mechanism (5) includes a drive rod (51), a partition plate (52), a feeding bin (53), and a drive assembly (54), wherein, One end of the drive rod (51) is rotatably connected to the top of the sealing base (2), and one end of the plurality of partition plates (52) is fixedly connected to the outer wall of the drive rod (51) in a circumferential array. The plurality of discharge bins (53) are respectively arranged between two partition plates (52). The drive assembly (54) is mounted on the top of the support plate (4), and the output end of the drive assembly (54) is fixedly connected to the other end of the drive rod (51).

2. The microbial fermentation apparatus for Daqu (a type of starter culture) according to claim 1, characterized in that, The discharge bin (53) includes a sealing sleeve (531), a scraper (532), and a sealing outer plate (533), wherein, The sealing sleeve (531) is embedded between the drive rod (51) and two adjacent partition plates (52), and the bottom of the sealing sleeve (531) is an open structure; The scraper (532) is fixedly connected to the bottom of the inner wall of the sealing sleeve (531), and the sealing outer plate (533) is fixedly connected to the outer wall of the sealing sleeve (531).

3. The microbial fermentation apparatus for Daqu (a type of starter culture) according to claim 2, characterized in that, The drive assembly (54) includes a placement platform (541) and a first drive device (542), wherein, The placement platform (541) is fixedly connected to the top of the support plate (4), and the first drive device (542) is installed on the top of the placement platform (541). The output end of the first drive device (542) is fixedly connected to the other end of the drive rod (51).

4. The microbial fermentation apparatus for Daqu (a type of starter culture) according to claim 2, characterized in that, It also includes a material handling assembly (6), which comprises a second drive device (61), a drive arm (62), and an electromagnet (63), wherein, An L-shaped support platform is provided on the outer wall of the assembly base (1). The second drive device (61) is installed on the outer wall of the L-shaped support platform. The output end of the second drive device (61) passes through the outer wall of the L-shaped support platform and is fixedly connected to one end of the drive arm (62). The electromagnet (63) is fixedly connected to the other end of the drive arm (62). A magnetic head (5331) is fixedly connected to the outer wall of the sealing outer plate (533), and the electromagnet (63) is magnetically connected to the magnetic head (5331).

5. The microbial fermentation apparatus for Daqu (a type of starter culture) according to claim 3, characterized in that, The outer wall of the support arm (3) is fixedly sleeved with a support sleeve plate (31). One end of the connecting arm (32) is rotatably connected to the support sleeve plate (31) via a torsion spring. The other end of the connecting arm (32) is rotatably connected to a protective plate (33). The inner wall of the protective plate (33) is in close contact with the outer wall of the sealing outer plate (533).

6. The microbial fermentation apparatus for Daqu (a type of starter culture) according to claim 4, characterized in that, The top of the sealing base (2) is fixedly connected to a protective sleeve plate (21), and the outer walls of multiple sealing outer plates (533) are attached to the inner wall of the protective sleeve plate (21). The protective sleeve plate (21) has a notch on one side opposite to the L-shaped support platform.

7. The microbial fermentation apparatus for Daqu (a type of starter culture) according to claim 1, characterized in that, A sealing cover is slidably sleeved on the drive rod (51), and an air inlet and an air outlet are installed on the sealing cover.

8. A method for microbial fermentation of Daqu (a type of starter culture) according to the Daqu microbial fermentation apparatus described in claims 1-7, characterized in that, Includes the following steps, S1. Loading preparation: According to the different types of fermentation raw materials and fermentation cycle, the raw materials are put into multiple feeding bins (53) in sequence. Each feeding bin (53) includes a sealing sleeve (531), a scraper (532) and a sealing outer plate (533), which are inserted between two adjacent partition plates (52) to ensure that the outer wall of the sealing outer plate (533) is tightly attached to the inner wall of the protective sleeve (21). If there is a need for temperature and humidity regulation, the temperature control system can be connected through the air inlet and exhaust port on the sealing cover. S2. Start the stirring mechanism and start the first drive device (542). The drive output end drives the drive rod (51) to rotate. The rotation of the drive rod drives multiple feeding bins (53) to move in a circle around the central axis. The raw materials inside each feeding bin are disturbed by the bottom scraper (532) during the stirring process, which enhances the uniformity of fermentation. The scraper is fixedly connected to the bottom of the inner wall of the sealing sleeve 531 to achieve effective scraping of the bottom raw materials and avoid residue and adhesion. S3. Time-sharing management and directional material collection: According to the fermentation time arrangement of the raw materials in each feeding silo, monitor that they have reached the optimal fermentation period, start the drive rod (51) to rotate, move the feeding silo (53) where the target fermentation is completed to the position corresponding to the notch of the protective sleeve plate (21), start the second drive device (61), its output end drives the drive arm (62) to rotate, the electromagnet (63) at the front end of the drive arm is attracted and engaged with the magnetic suction head (5331) of the target feeding silo, start the second drive device to retract the drive arm, and drive the feeding silo to exit the fermentation silo as a whole. During the exit process, the scraper (532) plays the role of scraping off the bottom residue and assisting in unloading. S5. After unloading, the discharge bin (53) can be cleaned and refilled with new raw materials. Other discharge bins that are still fermenting continue to be stirred by the drive component until the next round of timed material collection begins. The entire fermentation process achieves a closed-loop operation of batch separation, directional stirring, precise feeding and batch discharge.

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