A liquid strain fermentation tank

Abstract

The utility model relates to fermentation equipment technical field, concretely disclose a kind of liquid strain fermentation tank, its structure includes fermentation tank, gas supply component, gas resistance component and stirring component;Gas supply component is provided with gas ring pipe and air jet nozzle in the bottom of fermentation tank, gas resistance component includes gas cover, covers air jet nozzle, gas cover top and side are equipped with air hole, so that bubble is dispersed again;Stirring component includes motor, rotating shaft and stirring blade, drive fermentation liquid to flow;The outer wall of fermentation tank is equipped with heating jacket, one-way valve and gas filter are arranged on exhaust pipe;The utility model provides clean air by gas supply component, gas resistance component delays bubble and promotes uniform dispersion to rise, stirring component makes bubble rapidly spread to whole tank, increase dissolved oxygen content;Meet the growth demand of amphinema and other aerobic bacteria.

Description

Technical Field

[0001] This utility model relates to the field of fermentation equipment technology, specifically to a liquid microbial fermentation tank. Background Technology

[0002] Armillaria mellea, as a companion fungus to Gastrodia elata, has a close symbiotic relationship with the plant. The nutrients required for Gastrodia elata's growth mainly depend on the metabolic supply of Armillaria mellea. Therefore, the fermentation process of Armillaria mellea liquid spawn is crucial in Gastrodia elata cultivation. The quality of the liquid spawn directly affects the subsequent growth and yield of Gastrodia elata. As an aerobic microorganism, Armillaria mellea requires oxygen during the fermentation process; a sufficient oxygen supply is essential to ensure the activity and reproductive efficiency of the spawn.

[0003] Based on the above application scenarios, a liquid spawn fermentation tank for edible fungi (CN202220085628.6) is disclosed in the prior art. This device mainly includes a fermentation tank body with a rotating shaft rotatably connected to the upper end. The supporting gas supply mechanism includes a gas pump, an inlet pipe, an exhaust pipe, and an exhaust ring. The exhaust ring is fixed to the lower inner wall of the fermentation tank. The gas pump is installed at the upper end of the fermentation tank. The inlet pipe is connected to the input end of the gas pump. One end of the exhaust pipe is connected to the output end of the gas pump, and the other end passes through the fermentation tank and is fixedly connected to the air inlet of the exhaust ring. In use, a drive motor drives the rotating shaft to rotate, thereby causing multiple stirring blades on the shaft to operate synchronously, achieving uniform distribution of the spawn in the fermentation liquid to accelerate spawn growth. The gas pump delivers oxygen-containing gas to the exhaust ring, which then discharges the gas into the fermentation liquid, increasing the oxygen content inside the tank.

[0004] However, the aforementioned fermenters are insufficient. The oxygen-containing gas discharged from the exhaust ring will quickly form bubbles in the fermentation liquid and rise rapidly. In addition, although the stirring action of the stirring blades can diffuse the bubbles, it cannot effectively slow down the rising speed of the bubbles. This results in insufficient contact time between the gas and the fermentation liquid, making it difficult for oxygen to fully dissolve into the fermentation liquid, ultimately affecting the metabolic activity and reproductive efficiency of the strain. Utility Model Content

[0005] To address the technical deficiencies in the background art, this utility model proposes a liquid microbial fermentation tank. To further solve the aforementioned technical problems and meet practical needs, the specific technical solution is as follows: A liquid microbial fermentation tank includes a fermentation tank and a stirring assembly disposed within the fermentation tank. The fermentation tank is equipped with an air supply assembly, which has an air supply ring pipe at the bottom of the fermentation tank. The air supply ring pipe is equipped with air nozzles that are rotationally symmetrically distributed and have upward-facing air jets. Above the air supply ring pipe is an air blocking assembly that is fixedly connected to the bottom of the fermentation tank. Above the air supply ring pipe is an annular air cover that can cover the air supply ring pipe. The bottom of the fermentation tank is equipped with a discharge pipe, and the top of the fermentation tank is equipped with a discharge pipe and an exhaust pipe.

[0006] As a further technical solution of this utility model, a heating jacket is provided on the outer wall of the fermentation tank, a heating rod spirally surrounding the fermentation tank is provided inside the heating jacket, and a temperature sensor is provided on the top of the fermentation tank.

[0007] As a further technical solution of this utility model, an air pump is provided on the top of the fermentation tank, and an air supply pipe is provided on the outside of the fermentation tank. The two ends of the air supply pipe are respectively connected to the air pump and the air supply ring pipe, and a second gas filter is installed on the air supply pipe.

[0008] As a further technical solution of this utility model, a one-way valve and a first gas filter are sequentially arranged on the exhaust pipe along the gas flow direction.

[0009] As a further technical solution of this utility model, the longitudinal section of the air hood is n-shaped, the air nozzle is placed inside the air hood, and a number of air holes are respectively provided on the top and two sides of the top of the air hood. The air holes are distributed in a rotationally symmetrical manner on the air hood, and the number of air holes on the top and two sides of the top of the air hood are arranged in concentric circles.

[0010] As a further technical solution of this utility model, the gas supply ring pipe is symmetrically provided with support rods on its inner and outer sides. The support rods are distributed in a rotationally symmetrical manner inside the gas hood, and the two ends of the support rods are respectively connected to the inner wall of the top of the gas hood and the inner wall of the bottom of the fermenter.

[0011] As a further technical solution of this utility model, the stirring assembly includes a motor installed on the top of the fermentation tank, a rotating shaft disposed inside the fermentation tank and connected to the motor for transmission, and stirring blades symmetrically disposed on both sides of the rotating shaft. The stirring blades are equidistantly distributed along the length direction of the rotating shaft and are fixedly connected to the rotating shaft.

[0012] The beneficial effects of this invention are as follows: The gas-blocking component improves dissolved oxygen efficiency; the gas hood can cover the bubbles emitted from the nozzle, causing the gas to first collect inside the hood and then disperse again from the vent, effectively slowing the rising speed of the bubbles, extending the contact time between the gas and the fermentation liquid, increasing the dissolved oxygen content, meeting the aerobic requirements of Armillaria mellea, and improving its metabolic activity and reproductive efficiency; the heating jacket, in conjunction with the temperature sensor, can heat the fermenter, providing a suitable growth environment for the bacteria; the second gas filter in the gas supply pipe and the first gas filter and one-way valve in the exhaust pipe can purify the incoming gas and prevent backflow, filter the exhaust, ensure a clean fermentation environment, and thus improve the quality of the liquid bacteria. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall internal structure of this utility model.

[0014] Figure 2 For along Figure 1 A magnified view of a portion of point AA in the middle.

[0015] Figure 3 This is a schematic diagram of the gas transmission ring pipe structure of this utility model.

[0016] Figure 4 This is a schematic diagram of the air barrier component of this utility model.

[0017] Reference numerals: 1-Fermentation tank; 12-Discharge pipe; 13-Temperature sensor; 14-First gas filter; 15-Exhaust pipe; 16-One-way valve; 2-Gas supply assembly; 21-Air pump; 22-Gas delivery pipe; 23-Gas delivery ring pipe; 24-Air nozzle; 25-Second gas filter; 3-Heating jacket; 31-Heating rod; 4-Gas barrier assembly; 41-Gas cover; 42-Air hole; 43-Support rod; 5-Stirring assembly; 51-Motor; 52-Rotating shaft; 53-Stirring blade. Detailed Implementation

[0018] The embodiments of this utility model will be described below with reference to the accompanying drawings and related examples. The embodiments of this utility model are not limited to the following examples, and this utility model relates to relevant necessary components in this technical field, which should be regarded as well-known technology in this technical field and can be known and mastered by those skilled in this technical field.

[0019] like Figures 1 to 4As shown, this utility model provides a technical solution: a liquid microbial fermentation tank, including a fermentation tank 1 and a stirring assembly 5 disposed inside the fermentation tank 1. The fermentation tank 1 is provided with an air supply assembly 2. The air supply assembly 2 is provided with an air supply ring pipe 23 at the bottom inside the fermentation tank 1. The air supply ring pipe 23 is provided with air nozzles 24 that are rotationally symmetrically distributed and have upward air outlets. An air blocking assembly 4 is provided above the air supply ring pipe 23 and is fixedly connected to the bottom inside the fermentation tank 1. The air blocking assembly 4 is provided with an annular air cover 41 above the air supply ring pipe 23 that can cover the air supply ring pipe 23. A discharge pipe 12 is provided at the bottom of the fermentation tank 1, and a discharge pipe 12 and an exhaust pipe 15 are provided at the top of the fermentation tank 1.

[0020] In this invention, the air pump 21 of the air supply assembly 2 supplies air to the air supply ring pipe 23 inside the fermenter 1 through the air supply pipe 22. The second gas filter 25 on the air supply pipe 22 ensures clean air intake. The nozzle 24 of the air supply ring pipe 23 sprays gas upward to form bubbles. The air cover 41 of the gas blocking assembly 4 covers the nozzle 24, causing the gas to first collect inside the air cover 41 and then disperse and overflow again from the concentrically distributed air holes 42 on the air cover 41, effectively slowing down the rising speed of the bubbles. The motor 51 of the stirring assembly 5 drives the rotating shaft 52 and the symmetrically distributed stirring blades 53 to rotate. The stirring blades 53 are evenly distributed along the rotating shaft 52, which can drive the flow of the fermentation liquid, so that the redispersed bubbles can diffuse more evenly into the fermentation liquid, avoiding local bubble aggregation. The contact time between the bubbles and the fermentation liquid is extended, which can increase the dissolved oxygen in the fermentation liquid and fully meet the growth requirements of aerobic bacteria such as Armillaria mellea. The stirring effect of the stirring component 5 can also make the nutrients in the fermentation liquid more evenly distributed, allowing the bacteria to obtain nutrients more efficiently. Through the cooperation of the air supply component 2, the air blocking component 4, and the stirring component 5, the effects of clean air intake, uniform bubble dispersion, and high dissolved oxygen efficiency are achieved.

[0021] It should be noted that the present invention should also include a controller in its structure. The controller is electrically connected to the temperature sensor 13, the heating rod 31, the air pump 21 and the motor 51 respectively to realize integrated control of the fermentation process. The temperature sensor 13 provides real-time feedback of the temperature data inside the fermentation tank 1. The controller compares the data with a preset threshold and automatically starts and stops the heating rod 31 to maintain a constant temperature environment inside the tank through the heating jacket 3. The controller can adjust the air supply and air delivery frequency of the air pump 21 according to the needs of the fermentation stage. At the same time, the controller controls the speed of the motor 51 to adjust the stirring intensity of the stirring blade 53 to ensure the homogenization of the fermentation liquid.

[0022] As one of the preferred embodiments of this utility model, such as Figure 1 As shown, a heating jacket 3 is provided on the outer wall of the fermentation tank 1, and a heating rod 31 spirally surrounds the fermentation tank 1 inside the heating jacket 3. A temperature sensor 13 is provided on the top of the fermentation tank 1.

[0023] The heating jacket 3 is installed on the outer wall of the fermenter 1. The spiral heating rod 31 inside increases the contact area with the fermenter 1, so that the heat is evenly transferred to the fermentation liquid inside the tank, avoiding the decline in the activity of the strain due to local overheating or uneven heating. The temperature sensor 13 at the top of the fermenter 1 can collect the ambient temperature data inside the tank in real time. The controller is electrically connected to the temperature sensor 13 and the heating rod 31 respectively. When the temperature sensor 13 detects that the temperature inside the tank is lower than the threshold, the controller triggers the heating rod 31 to start heating. When the temperature reaches the upper limit of the threshold, the controller controls the heating rod 31 to stop working, realizing automatic temperature regulation.

[0024] As one of the preferred embodiments of this utility model, such as Figure 1 As shown, an air pump 21 is installed on the top of the fermentation tank 1, and an air supply pipe 22 is installed on the outside of the fermentation tank 1. The two ends of the air supply pipe 22 are connected to the air pump 21 and the air supply ring pipe 23, respectively. A second gas filter 25 is installed on the air supply pipe 22.

[0025] An air pump 21 is installed on the top of the fermenter 1. An air supply pipe 22 connects the air pump 21 to the air supply ring pipe 23 inside the fermenter 1, ensuring that the gas generated by the air pump 21 can be introduced into the air supply ring pipe 23. The second gas filter 25 on the air supply pipe 22 can filter impurities, microorganisms and moisture in the air, preventing external pollutants from entering the fermenter 1 and ensuring a clean fermentation environment. The filtered clean gas is sprayed out through the jet nozzle 24 on the air supply ring pipe 23 to form uniform bubbles.

[0026] As one of the preferred embodiments of this utility model, such as Figure 1 As shown, a one-way valve 16 and a first gas filter 14 are sequentially arranged on the exhaust pipe 15 along the gas flow direction.

[0027] The exhaust pipe 15 is sequentially equipped with a one-way valve 16 and a first gas filter 14 along the gas flow direction. The one-way valve 16 can restrict the one-way flow of gas and prevent outside air, microorganisms and impurities from flowing back into the fermenter 1 through the exhaust pipe 15, thus avoiding damage to the clean fermentation environment inside the tank. The first gas filter 14 can filter the gas discharged from the tank, intercepting bacterial droplets, fermentation impurities and other substances carried in the gas, preventing them from being discharged to the outside and causing pollution. The two work together to ensure the stability of the internal environment of the fermenter 1 and reduce the impact of exhaust on the external environment.

[0028] As one of the preferred embodiments of this utility model, such as Figures 2 to 4 As shown, the air hood 41 has an n-shaped longitudinal cross section, the air nozzle 24 is placed inside the air hood 41, and a number of air holes 42 are respectively provided on the top and the two sides of the top of the air hood 41. The air holes 42 are distributed in a rotationally symmetrical manner on the air hood 41, and the number of air holes 42 on the top and the two sides of the top of the air hood 41 are arranged in concentric circles.

[0029] The gas hood 41 has an n-shaped longitudinal section, which can completely cover the lower air nozzle 24, so that the gas ejected from the air nozzle 24 first gathers inside the gas hood 41, preventing the bubbles from rising directly and rapidly. The several air holes 42 on the top and both sides of the gas hood 41 can make the gathered gas evenly disperse the bubbles and overflow, increasing the contact time between the gas and the fermentation liquid, effectively improving the dissolved oxygen efficiency. Combined with the stirring action of the stirring component 5, the bubbles can quickly diffuse into the entire fermenter 1, providing sufficient oxygen for aerobic bacteria such as Armillaria mellea, ensuring their metabolic and reproductive needs.

[0030] As one of the preferred embodiments of this utility model, such as Figures 2 to 4 As shown, support rods 43 are symmetrically arranged on the inner and outer sides of the gas supply ring pipe 23. The support rods 43 are rotationally symmetrically distributed inside the gas hood 41. The two ends of the support rods 43 are respectively connected to the inner wall of the top of the gas hood 41 and the inner wall of the bottom of the fermenter 1.

[0031] Support rods 43 are symmetrically arranged on both the inner and outer sides of the gas supply ring pipe 23, and are distributed in a rotationally symmetrical manner inside the gas hood 41. The two ends of the support rods 43 are fixedly connected to the inner wall of the top of the gas hood 41 and the inner wall of the bottom of the fermentation tank 1, respectively, forming a stable connection. During the fermentation process, the stirring component 5 drives the flow of fermentation liquid, which will generate a continuous impact force on the gas hood 41. The support rods 43 can fix the gas hood 41 to prevent the gas hood 41 from shifting, tilting or deforming. Only when the gas hood 41 maintains structural stability can it continuously and completely cover the jet nozzle 24, ensuring that the gas is fully collected inside and then evenly overflows from the gas hole 42, maintaining a stable dissolved oxygen effect.

[0032] As one of the preferred embodiments of this utility model, such as Figure 1 As shown, the stirring assembly 5 includes a motor 51 installed on the top of the fermentation tank 1, a rotating shaft 52 disposed inside the fermentation tank 1 and connected to the motor 51 for transmission, and stirring blades 53 symmetrically disposed on both sides of the rotating shaft 52. The stirring blades 53 are equidistantly distributed along the length direction of the rotating shaft 52 and are fixedly connected to the rotating shaft 52.

[0033] The motor 51 is installed on the top of the fermentation tank 1, and the rotating shaft 52 is placed inside the fermentation tank 1 and connected to the motor 51 for transmission. The stirring blades 53 are symmetrically distributed on both sides of the rotating shaft 52 and fixed at equal intervals along the length of the rotating shaft 52. When the rotating shaft 52 drives the stirring blades 53 to rotate, it can promote the fermentation liquid to form a circulating flow, so that the bubbles overflowing from the gas hood 41 can quickly diffuse into the entire tank, avoiding local oxygen deficiency; at the same time, it allows the nutrients in the fermentation liquid to fully contact the inoculum, prevents the inoculum from aggregating, and ensures that the inoculum growth environment in each area is consistent.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A liquid microbial fermentation tank, comprising a fermentation tank (1) and a stirring assembly (5) disposed within the fermentation tank (1), characterized in that, The fermenter (1) is provided with an air supply component (2). The air supply component (2) has an air supply ring pipe (23) at the bottom of the fermenter (1). The air supply ring pipe (23) is provided with air nozzles (24) that are distributed in a rotational symmetry and have their air outlets facing upwards. An air blocking component (4) is provided above the air supply ring pipe (23) and is fixedly connected to the bottom of the fermenter (1). An air blocking component (4) is provided above the air supply ring pipe (23) and is a ring-shaped air cover (41) that can cover the air supply ring pipe (23). A discharge pipe (12) is provided at the bottom of the fermenter (1). A discharge pipe (12) and an exhaust pipe (15) are provided at the top of the fermenter (1).

2. The liquid microbial fermentation tank according to claim 1, characterized in that, A heating sleeve (3) is provided on the outer wall of the fermentation tank (1), and a heating rod (31) is provided inside the heating sleeve (3) in a spiral shape around the fermentation tank (1). A temperature sensor (13) is provided on the top of the fermentation tank (1).

3. The liquid microbial fermentation tank according to claim 1, characterized in that, The fermenter (1) is equipped with an air pump (21) on top and an air supply pipe (22) is provided on the outside of the fermenter (1). The two ends of the air supply pipe (22) are connected to the air pump (21) and the air supply ring pipe (23) respectively. A second gas filter (25) is installed on the air supply pipe (22).

4. A liquid microbial fermentation tank according to claim 1, characterized in that, A one-way valve (16) and a first gas filter (14) are sequentially arranged on the exhaust pipe (15) along the gas flow direction.

5. A liquid microbial fermentation tank according to claim 1, characterized in that, The air hood (41) has an n-shaped longitudinal section. The jet nozzle (24) is placed inside the air hood (41). The top and two sides of the top of the air hood (41) are provided with a number of air holes (42). The air holes (42) are distributed in a rotationally symmetrical manner on the air hood (41). The air holes (42) on the top and two sides of the top of the air hood (41) are arranged in concentric circles.

6. A liquid microbial fermentation tank according to claim 1, characterized in that, Support rods (43) are symmetrically arranged on the inner and outer sides of the gas supply ring pipe (23). The support rods (43) are rotationally symmetrically distributed inside the gas hood (41). The two ends of the support rods (43) are respectively connected to the inner wall of the top of the gas hood (41) and the inner wall of the bottom of the fermenter (1).

7. A liquid microbial fermentation tank according to claim 1, characterized in that, The stirring assembly (5) includes a motor (51) installed on the top of the fermentation tank (1), a rotating shaft (52) located inside the fermentation tank (1) and connected to the motor (51) for transmission, and stirring blades (53) symmetrically arranged on both sides of the rotating shaft (52). The stirring blades (53) are equidistantly distributed along the length of the rotating shaft (52) and fixedly connected to the rotating shaft (52).

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