A fermentation device for bean product processing

Abstract

The application discloses a kind of fermentation devices for bean product processing, belong to bean product processing technical field, including lower cylinder, first stirring mechanism is installed in lower cylinder, fermentation device for bean product processing also includes second stirring mechanism, upper cylinder, two hydraulic cylinders, cleaning mechanism and drive mechanism.Cleaning mechanism is used to clean the inner wall of lower cylinder when upper cylinder moves;Drive mechanism is installed on upper cylinder, and drive mechanism is used to drive first stirring mechanism to run when upper cylinder moves vertically.The fermentation device for bean product processing in the application is adjusted by setting upper cylinder, lower cylinder and hydraulic cylinder, by starting hydraulic cylinder to drive upper cylinder to move, the volume of chamber surrounded by upper cylinder and lower cylinder is adjusted, so that it adapts to the pressure change requirement of fermentation gas production and gas consumption stage, avoid the overhigh or too low pressure in chamber to destroy the activity of bacterial species, maintain stable fermentation environment, which is conducive to improving the fermentation quality of bean product.

Description

Technical Field

[0001] This invention belongs to the field of soybean product processing technology, and particularly relates to a fermentation device for soybean product processing. Background Technology

[0002] As an important category of traditional fermented foods in my country, soybean products have always been a focus of the food industry in terms of the research and development of their processing technology and fermentation equipment. With consumers' increasing demands for the quality, safety, and production efficiency of soybean products, fermentation equipment is gradually developing towards integration, automation, and precision. Currently, soybean product fermentation equipment on the market is mainly divided into two categories: static fermentation tanks and dynamic stirring fermentation equipment. Static fermentation tanks have a simple structure and low cost, but they suffer from problems such as uneven material mixing and weak control over the fermentation environment, making it difficult to meet the needs of large-scale standardized production. Dynamic stirring fermentation equipment improves the mixing effect by adding a stirring mechanism, and some equipment also incorporates air pressure regulation functions, attempting to improve product quality by controlling the fermentation environment.

[0003] However, although existing fermentation devices for soybean product processing have both stirring and air pressure regulation functions, they generally use motors to drive the stirring mechanism independently and are equipped with additional air pressure regulation components such as breathing valves and air pumps. The two systems are controlled independently, and power reuse is not achieved, resulting in complex equipment structure and high manufacturing costs.

[0004] Meanwhile, existing equipment generally suffers from problems such as severe material adhesion to the walls, numerous fermentation dead zones, and difficulty in cleaning the chambers when dealing with fermented bean curd cakes, soy sauce, and other paste-like or mushy soy products. This not only causes raw material loss but also easily leads to contamination by miscellaneous bacteria, affecting product qualification rate and flavor consistency. Summary of the Invention

[0005] The purpose of this invention is to provide a fermentation device for soybean product processing, which solves the technical problem that although existing fermentation devices for soybean product processing have both stirring and air pressure regulation functions, they generally use an independent motor to drive the stirring mechanism and additionally configure air pressure regulation components such as a breathing valve and an air supply pump. The two systems are independently controlled, resulting in complex equipment structure and high manufacturing costs.

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

[0007] A fermentation device for processing soybean products includes a lower cylinder with a first stirring mechanism installed inside. The device further includes: a second stirring mechanism installed inside the lower cylinder for co-stirring the material inside the lower cylinder when the first stirring mechanism is running; an upper cylinder slidably fitted onto the lower cylinder, forming a fermentation chamber; two hydraulic cylinders, both installed on the outer surface of the lower cylinder, for driving the upper cylinder to move up and down, changing the volume of the fermentation chamber and indirectly regulating the air pressure inside the chamber; a cleaning mechanism for cleaning the inner wall of the lower cylinder when the upper cylinder moves; and a driving mechanism installed on the upper cylinder for converting the axial movement of the upper cylinder into rotational driving force for the first stirring mechanism to drive its operation.

[0008] Preferably, the first stirring mechanism includes: a mounting base, fixedly connected to the inner wall of the lower cylinder, on which a vertical rod is rotatably mounted; a drive groove, formed on the vertical rod; a first stirring rod, mounted on the vertical rod; and an internal toothed ring, mounted on the inner wall of the lower cylinder.

[0009] Preferably, the second stirring mechanism includes: a mounting plate fixedly sleeved on the vertical rod; two connecting plates, both mounted on the vertical rod; two vertical shafts, the two ends of which are rotatably connected to the mounting plate and the connecting plate respectively, and a plurality of second stirring rods are mounted on the vertical shafts; and two gears fixedly sleeved on the two vertical shafts respectively, both meshing with the internal gear ring.

[0010] Preferably, the driving mechanism includes: a fixed ring, which is installed through the top surface of the upper cylinder, and the vertical rod, which passes through the fixed ring; and an arc-shaped strip, which is installed on the inner wall of the fixed ring and is slidably connected to the driving groove on the vertical rod.

[0011] Preferably, the cleaning mechanism includes: a movable frame located inside the lower cylinder; two annular scrapers respectively installed at the top and bottom of the movable frame, both in contact with the inner wall of the lower cylinder; and multiple connecting rods, one end of which is fixedly connected to the movable frame, and the other end of which is fixedly connected to the inner wall of the upper cylinder.

[0012] Preferably, the fermentation device for processing soybean products further includes: an annular groove formed on the inner wall of the upper cylinder; and an annular sealing ring installed in the annular groove.

[0013] Preferably, the fermentation device for soybean product processing further includes: a discharge pipe installed on the bottom surface of the lower cylinder; and a support leg installed on the bottom surface of the lower cylinder.

[0014] Preferably, the fermentation device for soybean product processing further includes: a feed pipe, which is installed through the top surface of the upper cylinder; and a pressure gauge, which is installed on the side of the upper cylinder.

[0015] Preferably, the fermentation device for soybean product processing further includes: two support plates, both installed on the outer surface of the lower cylinder, with mounting grooves on the support plates, and the hydraulic cylinders installed in the mounting grooves; and two fixing plates, both installed on the outer surface of the upper cylinder, and fixedly connected to the extension ends of the two hydraulic cylinders respectively.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0017] 1. The fermentation device for soybean product processing in this invention is equipped with an upper cylinder, a lower cylinder, and a hydraulic cylinder. By activating the hydraulic cylinder, the upper cylinder is moved, and the volume of the chamber formed by the upper and lower cylinders is adjusted to adapt to the gas pressure changes during the gas production and consumption stages of fermentation. This avoids excessively high or low gas pressure in the chamber, which could damage the activity of the microorganisms, maintains a stable fermentation environment, and helps improve the fermentation quality of soybean products.

[0018] 2. The fermentation device for soybean product processing in this invention is equipped with an upper cylinder, a drive mechanism, and a hydraulic cylinder. By starting the hydraulic cylinder, the upper cylinder is moved, and then the drive mechanism drives the first stirring mechanism to run. This converts the power of the hydraulic cylinder into stirring power, allowing the hydraulic cylinder power to be reused. There is no need to configure an additional stirring motor, which simplifies the equipment structure and reduces manufacturing costs.

[0019] 3. The fermentation device for soybean product processing in this invention is equipped with a first stirring mechanism and a second stirring mechanism. When the vertical rod rotates, it drives the vertical shaft of the second stirring mechanism to revolve. At the same time, the gear meshes with the internal gear ring to drive the vertical shaft to rotate, so that the second stirring rod performs a compound stirring motion of revolving and rotating simultaneously, which enhances the stirring effect on the materials inside the chamber, improves the stirring uniformity, and shortens the mixing time.

[0020] 4. The cleaning mechanism in this invention is equipped with a movable frame, a ring scraper, and a connecting rod. When the upper cylinder moves, the movable frame and the ring scraper will move through the connecting rod, so that the ring scraper can scrape and clean the inner wall of the lower cylinder, avoiding raw material loss caused by the adhesion and clumping of slurry or paste-like materials, and preventing the adhering materials from deteriorating and contaminating the new materials. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a perspective view of the fermentation apparatus for processing soybean products in this invention;

[0023] Figure 2 This is a front view of the fermentation device for processing soybean products in this invention without a sealed cylinder;

[0024] Figure 3 This is a schematic diagram of the internal structure of the lower cylinder in this invention;

[0025] Figure 4 This is a schematic diagram of the assembly structure of the first stirring mechanism and the second stirring mechanism in this invention;

[0026] Figure 5 This is a cross-sectional view of the fixing ring in this invention;

[0027] Figure 6 This is a schematic diagram of the assembly structure of the upper cylinder and the cleaning mechanism in this invention;

[0028] Figure 7 This is a perspective view of the cleaning mechanism in this invention;

[0029] Reference numerals: 100, lower cylinder; 101, hydraulic cylinder; 103, discharge pipe; 104, support leg; 105, support plate; 110, first stirring mechanism; 111, mounting base; 112, vertical rod; 113, drive groove; 114, first stirring rod; 115, internal gear ring; 120, second stirring mechanism; 121, mounting plate; 122, connecting plate; 123, vertical shaft; 124, second stirring rod; 125, gear; 200, upper cylinder; 201, annular sealing ring; 202, fixing plate; 203, feed pipe; 204, pressure gauge; 210, cleaning mechanism; 211, movable frame; 212, annular shovel; 213, connecting rod; 220, drive mechanism; 221, fixing ring; 222, arc-shaped strip. Detailed Implementation

[0030] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0033] This invention is described in detail with reference to the accompanying drawings. When detailing the embodiments of this invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not to scale. Furthermore, the accompanying drawings are merely examples and should not be construed as limiting the scope of protection of this invention. In actual fabrication, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0034] Furthermore, it should be noted in the description of this invention that the terms "first," "second," or "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" in this invention should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; similarly, they can refer to mechanical connections, electrical connections, or direct connections, or indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] Example 1: As Figures 1 to 4 As shown, a fermentation device for processing soybean products includes a lower cylinder 100, a discharge pipe 103 installed on the bottom surface of the lower cylinder 100, a valve installed on the discharge pipe 103, and a support leg 104 installed on the bottom surface of the lower cylinder 100.

[0037] The lower cylinder 100 is equipped with a first stirring mechanism 110. The fermentation device for soybean product processing also includes a second stirring mechanism 120, an upper cylinder 200, two hydraulic cylinders 101, a cleaning mechanism 210, and a drive mechanism 220.

[0038] The second stirring mechanism 120 is installed inside the lower cylinder 100. The second stirring mechanism 120 is used to stir the material inside the lower cylinder 100 when the first stirring mechanism 110 is running.

[0039] The upper cylinder 200 is fitted onto the lower cylinder 100 and is slidably connected to the lower cylinder 100. An annular groove is formed on the inner wall of the upper cylinder 200, and an annular sealing ring 201 is installed in the annular groove. The annular sealing ring 201 is a Y-shaped rubber sealing ring.

[0040] A feed pipe 203 is installed through the top surface of the upper cylinder 200, and a sealing cap is installed on the feed pipe 203. A pressure gauge 204 is installed on the side of the upper cylinder 200. The pressure gauge 204 is used to detect the air pressure in the chambers of the upper cylinder 200 and the lower cylinder 100.

[0041] Two support plates 105 are installed on the outer surface of the lower cylinder 100, and mounting grooves are formed on the support plates 105. Two fixing plates 202 are installed on the outer surface of the upper cylinder 200, and the two fixing plates 202 are located directly above the two support plates 105. Hydraulic cylinders 101 are respectively installed in the mounting grooves of the support plates 105, and the extension ends of the hydraulic cylinders 101 are fixedly connected to the fixing plates 202. The two hydraulic cylinders 101 are used to drive the upper cylinder 200 to slide up and down, thereby indirectly adjusting the air pressure in the chamber formed by the upper cylinder 200 and the lower cylinder 100.

[0042] The cleaning mechanism 210 is used to clean the inner wall of the lower cylinder 100 when the upper cylinder 200 moves; the drive mechanism 220 is installed on the upper cylinder 200 and is used to drive the first stirring mechanism 110 to run when the upper cylinder 200 moves vertically.

[0043] Specifically, when using soybean milk fermentation to prepare soy products such as fermented bean curd, soy sauce, and fermented black bean sauce in paste or paste form, the raw materials are added into the lower cylinder 100. Then, by activating two hydraulic cylinders 101, the upper cylinder 200 is moved up and down. When the upper cylinder 200 moves, it drives the first stirring mechanism 110 through the drive mechanism 220. The first stirring mechanism 110 stirs the materials in the lower cylinder 100 during operation. Furthermore, when the first stirring mechanism 110 is running, it also drives the second stirring mechanism 120 to run, so that the second stirring mechanism 120 also stirs the materials in the lower cylinder 100. This ensures that the components are fully integrated, improves the uniformity of material mixing, reduces the difference in bacterial density in different locations, and lowers the risk of local fermentation differences.

[0044] During the material fermentation stage, the internal chamber space of the upper cylinder 200 and lower cylinder 100 can be adjusted by activating two hydraulic cylinders 101 to move the upper cylinder 200. For example, during the gas production stage of fermentation, the gas produced by the fermenting material causes the gas pressure in the chamber to rise. At this time, the upper cylinder 200 is driven upward by the hydraulic cylinders 101 to increase the chamber volume to balance the rising gas pressure and maintain the pressure within the set range. During the gas consumption stage of fermentation, the upper cylinder 200 is driven downward to reduce the volume and increase the gas pressure, thereby maintaining stable internal gas pressure. By dynamically adjusting the chamber volume of the upper cylinder 200 and lower cylinder 100 at different stages of fermentation, the fermentation quality can be avoided due to unstable internal gas pressure.

[0045] like Figure 3 and Figure 4As shown, the first stirring mechanism 110 includes a mounting base 111, a drive groove 113, a first stirring rod 114, and an internal gear ring 115. The mounting base 111 is fixedly connected to the inner wall of the lower cylinder 100, and a vertical rod 112 is rotatably mounted on the mounting base 111; the drive groove 113 is formed on the vertical rod 112, and the drive groove 113 is an arc-shaped groove; the first stirring rod 114 is mounted on the vertical rod 112; and the internal gear ring 115 is mounted on the inner wall of the lower cylinder 100. A sealing cylinder is installed on the top surface of the upper cylinder 200, and the vertical rod 112 is located inside the sealing cylinder.

[0046] Specifically, when the vertical rod 112 rotates, it will drive the first stirring rod 114 to rotate. The rotating first stirring rod 114 will stir the material in the lower cylinder 100, so that the components in the material are fully mixed.

[0047] like Figure 3 and Figure 4 As shown, the second stirring mechanism 120 includes a mounting plate 121, two connecting plates 122, two vertical shafts 123, and two gears 125. The mounting plate 121 is fixedly sleeved on the vertical rod 112; both connecting plates 122 are mounted on the vertical rod 112; the two ends of the vertical shaft 123 are rotatably connected to the mounting plate 121 and the connecting plates 122 respectively, and multiple second stirring rods 124 are mounted on the vertical shaft 123; the two gears 125 are fixedly sleeved on the two vertical shafts 123 respectively, and both gears 125 are meshed with the internal gear ring 115.

[0048] Specifically, when the vertical rod 112 rotates, it will drive the mounting plate 121 and the connecting plate 122 to rotate, which in turn drives the two vertical shafts 123 to rotate. Since the gear 125 on the vertical shaft 123 is in a meshing state with the internal gear ring 115, when the vertical shaft 123 rotates with the vertical rod 112, it will also rotate under the influence of the internal gear ring 115 and the gear 125, which will drive the multiple second stirring rods 124 to rotate, thereby stirring the material in the lower cylinder 100 through the second stirring rods 124.

[0049] like Figure 1 , Figure 2 and Figure 5 As shown, the drive mechanism 220 includes a fixed ring 221 and an arc-shaped bar 222. The fixed ring 221 is installed through the top surface of the upper cylinder 200, and the vertical rod 112 passes through the fixed ring 221. The arc-shaped bar 222 is installed on the inner wall of the fixed ring 221, and the arc-shaped bar 222 is slidably connected to the drive groove 113 on the vertical rod 112. Furthermore, the engagement depth between the arc-shaped bar 222 and the threaded groove is 3-5mm, ensuring that the lifting force is effectively converted into the rotational force of the vertical rod 112. It should be noted that there can be one or more drive grooves 113 on the vertical rod 112, and the number of arc-shaped bars 222 in the fixed ring 221 is always the same as the number of drive grooves 113.

[0050] Specifically, when the upper cylinder 200 moves up or down, it will cause the fixed ring 221 and the arc-shaped strip 222 to move up or down. When the arc-shaped strip 222 moves, it will drive the vertical rod 112 to rotate through the drive groove 113.

[0051] Working principle: When using soybean milk fermentation to prepare soy products such as fermented bean curd, soy sauce, and fermented black bean sauce, the material is added into the lower cylinder 100 through the feed pipe 203, and the height of the material must be lower than the height of the inner toothed ring 115. Then, by activating two hydraulic cylinders 101, the upper cylinder 200 is moved up and down through two fixed plates 202. When the upper cylinder 200 moves, it will drive the fixed ring 221 and the arc-shaped bar 222 to move up or down. When the arc-shaped bar 222 moves, it will drive the vertical rod 112 to rotate through the drive groove 113, which in turn drives the first stirring rod 114 to rotate. The rotating first stirring rod 114 will stir the material in the lower cylinder 100, so that the components in the material are fully mixed.

[0052] Furthermore, when the vertical rod 112 rotates, it will drive the mounting plate 121 and the connecting plate 122 to rotate, which in turn drives the two vertical shafts 123 to rotate. Since the gear 125 on the vertical shaft 123 is in a meshing state with the internal gear ring 115, when the vertical shaft 123 rotates with the vertical rod 112, it will also rotate under the influence of the internal gear ring 115 and the gear 125, which will drive the multiple second stirring rods 124 to rotate. Thus, the material in the lower cylinder 100 is stirred by the second stirring rods 124. The first stirring mechanism 110 and the second stirring mechanism 120 stir together to further improve the uniformity of material mixing and ensure the consistency of fermentation.

[0053] Furthermore, during the gas production stage of fermentation, the gas generated by the fermenting material causes the pressure inside the chamber to rise. At this time, the upper cylinder 200 is driven upward by the hydraulic cylinder 101 to increase the chamber volume and balance the pressure rise, maintaining the pressure within the set range. During the gas consumption stage of fermentation, the upper cylinder 200 is driven downward by the two hydraulic cylinders 101 to reduce the volume of the inner chambers of the upper cylinder 200 and lower cylinder 100, increasing the pressure and thus maintaining stable internal pressure. By dynamically adjusting the chamber volumes of the upper cylinder 200 and lower cylinder 100 at different stages of fermentation, the fermentation quality is avoided due to unstable internal pressure.

[0054] The two hydraulic cylinders 101 in this device can not only drive the stirring, but also adjust the volume of the inner cavity of the upper cylinder 200 and the lower cylinder 100, eliminating the need for an additional motor and reducing manufacturing costs.

[0055] Example 2: As Figure 6 and Figure 7As shown, while all other parts are the same as in Embodiment 1, the difference between this embodiment and Embodiment 1 is that the cleaning mechanism 210 includes a movable frame 211, two annular blades 212 and multiple connecting rods 213.

[0056] The movable frame 211 is located inside the lower cylinder 100; two annular blades 212 are respectively installed at the top and bottom of the movable frame 211, and both annular blades 212 are interference-fitted with the inner wall of the lower cylinder 100, with an interference amount of 0.1-0.5mm. One end of the connecting rod 213 is fixedly connected to the movable frame 211, and the other end of the connecting rod 213 is fixedly connected to the inner wall of the upper cylinder 200.

[0057] Working principle: In actual use, when the upper cylinder 200 moves up or down, it will drive the movable frame 211 to move through multiple connecting rods 213, which in turn drives the two annular scrapers 212 to move, thereby enabling the annular scrapers 212 to clean the inner wall of the lower cylinder 100 and reduce material loss due to wall adhesion.

[0058] Example 3: As Figure 1 and Figure 2 As shown, while all other parts are the same as in Example 1, the difference between this example and Example 1 is that:

[0059] A pressure sensor is installed inside the upper cylinder 200. This sensor collects real-time pressure data within the fermentation chamber. The sensor has a measurement range of 0-0.1 MPa, a measurement accuracy of ±0.001 MPa, and a data sampling frequency of 1 time per second. A display controller is installed on the lower cylinder 100. The display controller is electrically connected to the pressure sensor and two hydraulic cylinders 101. It receives the pressure data and controls the extension and retraction stroke and speed of the hydraulic cylinders 101.

[0060] When using it, first set the air pressure reference range in the upper cylinder 200 and lower cylinder 100 chambers in the display controller, such as setting the air pressure reference range to 0.04-0.06MPa.

[0061] During the fermentation and gas production stage of the material in the chamber, microbial metabolism produces a large amount of carbon dioxide, causing the chamber pressure to rise continuously from the baseline value of 0.04 MPa. When the pressure sensor detects that the pressure reaches 0.06 MPa, the display controller activates two hydraulic cylinders 101, causing their extension ends to extend synchronously, moving the upper cylinder 200 upwards. For every 10 mm increase in the upper cylinder 200, the chamber volume increases by approximately 8 L, and the pressure decreases by an average of 0.008 MPa. When the pressure sensor detects that the chamber pressure has dropped to 0.04 MPa, the display controller sends a stop signal to the two hydraulic cylinders 101, causing them to stop extending and retracting, and the upper cylinder 200 to remain fixed in position. If the pressure subsequently rises to 0.06 MPa again, the above adjustment process is repeated, with a maximum stroke of no more than 50 mm per adjustment, ensuring that the chamber pressure remains stable within the 0.04-0.06 MPa range to avoid high pressure inhibiting the metabolic activity of Aspergillus oryzae and other microorganisms.

[0062] Once the fermentation process enters the gas-consuming stage, the microorganisms consume oxygen within the chamber and reduce gas production, causing the chamber pressure to gradually decrease from the baseline value of 0.04 MPa. When the pressure sensor detects that the pressure has dropped to 0.02 MPa, the display controller activates two hydraulic cylinders 101, causing their piston rods to retract synchronously, moving the upper cylinder 200 downwards. For every 8 mm the upper cylinder 200 descends, the chamber volume decreases by approximately 6.4 L, and the average pressure increases by 0.007 MPa. When the pressure rises back to 0.035 MPa, the hydraulic cylinders 101 stop operating, maintaining the current chamber volume. If the pressure continues to drop below 0.02 MPa, the descent adjustment is restarted until the upper cylinder 200 descends to its lowest limit, preventing low pressure from slowing down microbial metabolism.

[0063] By using a pressure sensor, display controller, and two hydraulic cylinders 101 in combination, the pressure can be automatically adjusted throughout the fermentation process. The pressure fluctuation can be controlled within ±0.005MPa, which improves the pressure stability by 80% compared to manual adjustment. During the gas production stage, excess pressure can be released quickly to prevent the chamber pressure from exceeding 0.08MPa, which could lead to leakage of the sealing cap or bulging of the material. During the gas consumption stage, the volume pressure is replenished in a timely manner to ensure the micro-pressure environment required for the metabolism of the microorganisms, which helps to shorten the fermentation cycle of soybean products.

[0064] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

[0065] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A fermentation apparatus for processing soybean products, comprising a lower cylinder (100), wherein a first stirring mechanism (110) is installed inside the lower cylinder (100), characterized in that, Also includes: The second stirring mechanism (120) is installed inside the lower cylinder (100) and is used to stir the material inside the lower cylinder (100) in conjunction with the first stirring mechanism (110) when it is running. The upper cylinder (200) is slidably sleeved on the lower cylinder (100) and together with the lower cylinder (100) forms a fermentation chamber; Two hydraulic cylinders (101) are installed on the outer surface of the lower cylinder (100) to drive the upper cylinder (200) to move up and down, change the volume of the fermentation chamber, and indirectly regulate the air pressure in the chamber. A cleaning mechanism (210) is used to clean the inner wall of the lower cylinder (100) when the upper cylinder (200) moves; A drive mechanism (220) is installed on the upper cylinder (200) to convert the axial movement of the upper cylinder (200) into the rotational driving force of the first stirring mechanism (110) to drive the first stirring mechanism (110) to operate.

2. The fermentation apparatus for processing soybean products according to claim 1, characterized in that, The first stirring mechanism (110) includes: Mounting base (111) is fixedly connected to the inner wall of the lower cylinder (100), and a vertical rod (112) is rotatably mounted on it. A drive slot (113) is formed on the vertical rod (112); The first stirring rod (114) is mounted on the vertical rod (112); An internal toothed ring (115) is installed on the inner wall of the lower cylinder (100).

3. The fermentation apparatus for processing soybean products according to claim 2, characterized in that, The second stirring mechanism (120) includes: Mounting plate (121) is fixedly sleeved on the vertical rod (112); Both connecting plates (122) are installed on the vertical rod (112); Two vertical shafts (123) are rotatably connected at both ends to a mounting plate (121) and a connecting plate (122), respectively. Multiple second stirring rods (124) are mounted on the vertical shafts (123). Two gears (125) are fixedly sleeved on the two vertical shafts (123) respectively, and are meshed with the internal gear ring (115).

4. The fermentation apparatus for processing soybean products according to claim 2, characterized in that, The drive mechanism (220) includes: A fixing ring (221) is installed through the top surface of the upper cylinder (200), and the vertical rod (112) passes through the fixing ring (221). An arc-shaped strip (222) is installed on the inner wall of the fixing ring (221) and is slidably connected to the drive groove (113) on the vertical rod (112).

5. The fermentation apparatus for processing soybean products according to claim 1, characterized in that, The cleaning mechanism (210) includes: The movable frame (211) is located inside the lower cylinder (100); Two annular blades (212) are respectively installed at the top and bottom of the movable frame (211) and are in contact with the inner wall of the lower cylinder (100); Multiple connecting rods (213) are provided, one end of which is fixedly connected to the movable frame (211), and the other end of which is fixedly connected to the inner wall of the upper cylinder (200).

6. The fermentation apparatus for processing soybean products according to claim 1, characterized in that, Also includes: An annular groove is formed on the inner wall of the upper cylinder (200); An annular sealing ring (201) is installed in the annular groove.

7. The fermentation apparatus for processing soybean products according to claim 6, characterized in that, Also includes: The discharge pipe (103) is installed on the bottom surface of the lower cylinder (100); Support leg (104) is installed on the bottom surface of the lower cylinder (100).

8. The fermentation apparatus for processing soybean products according to claim 1, characterized in that, Also includes: The feed pipe (203) is installed through the top surface of the upper cylinder (200); A pressure gauge (204) is installed on the side of the upper cylinder (200).

9. The fermentation apparatus for processing soybean products according to claim 1, characterized in that, Also includes: Two support plates (105) are installed on the outer surface of the lower cylinder (100). The support plates (105) are provided with mounting grooves, and the hydraulic cylinder (101) is installed in the mounting grooves. Two fixing plates (202) are installed on the outer surface of the upper cylinder (200) and are fixedly connected to the extension ends of the two hydraulic cylinders (101) respectively.

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