Fermentation tank for producing biological bacterial fertilizer
By introducing grids and air intake devices into the fermentation tank, precise control of airflow and velocity is achieved, solving the problem that the ventilation volume cannot match the needs of the fermentation stage in existing technologies, thus improving the quality and production efficiency of microbial fertilizer.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU DIYUN AGRICULTURAL ECOLOGY CO LTD
- Filing Date
- 2025-04-14
- Publication Date
- 2026-04-14
AI Technical Summary
Existing fermenters cannot flexibly adjust the ventilation volume according to the microbial needs at different stages of microbial fertilizer fermentation, resulting in a mismatch in oxygen supply, which affects the fermentation process and the quality of microbial fertilizer.
A fermentation tank for bio-fertilizer production was designed. By controlling the airflow and velocity of the ventilation rack, and utilizing a grid, linear motor, air intake device, and filtration device, precise regulation of different fermentation stages can be achieved to meet the oxygen requirements of microorganisms.
The fermentation process was optimized, which improved the quality and production efficiency of the microbial fertilizer, extended the fermentation cycle, and ensured the stability of the microbial growth environment and the quality of the microbial fertilizer.
Smart Images

Figure CN224118933U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of fermenters, and in particular to a fermenter for the production of bio-fertilizer. Background Technology
[0002] Traditionally, fermenters use a fixed ventilation system, which cannot adjust the ventilation volume according to the dynamic changes of microorganisms during fermentation. In the early stages of fermentation, when microorganisms are adapting to the environment, their oxygen demand is low. Fixed ventilation can easily overwhelm microbial cells due to excessive airflow, interfering with their initial growth. During the logarithmic growth phase, microorganisms have a high metabolic rate and a significantly increased oxygen demand. Fixed ventilation cannot meet their urgent oxygen needs, thus limiting the fermentation process. In the stationary phase, the oxygen demand of microorganisms tends to stabilize. Improper ventilation can cause fluctuations in environmental parameters, affecting the accumulation of metabolic products. In the decline phase, microbial activity decreases. Excessive ventilation accelerates microbial death and harmful oxidation reactions, damaging the quality of the microbial fertilizer.
[0003] In view of these problems, it is urgent to develop a fermenter for bio-fertilizer production that can flexibly adjust the air flow according to different stages of fermentation, so as to optimize the fermentation process and improve the quality and production efficiency of bio-fertilizer. Utility Model Content
[0004] This utility model aims to at least partially solve one of the technical problems in the related art.
[0005] Therefore, the purpose of this utility model is to propose a fermentation tank for the production of bio-fertilizer, which controls the airflow and velocity entering the ventilation rack to meet the ventilation requirements of different fermentation stages.
[0006] To achieve the above objectives, this utility model proposes a fermentation tank for bio-fertilizer production. The fermentation tank has a fermentation port on its outer wall and includes: a ventilation frame with its output port located at the fermentation port of the fermentation tank; multiple sets of grilles rotatably connected to the air inlet of the ventilation frame via shafts; a gear with one end of the shaft extending to the outside of the ventilation frame and a gear mounted thereon; a rack slidably connected to the side wall of the ventilation frame, meshing with the gear; a linear motor fixed to the outside of the ventilation frame and connected to one side of the rack; an air inlet device located on the inner wall of the ventilation frame; and a filter device located on the inner wall of the ventilation frame, situated at the air outlet of the grilles.
[0007] The fermentation tank for bio-fertilizer production of this utility model controls the airflow and velocity entering the ventilation rack to meet the ventilation requirements of different fermentation stages.
[0008] In addition, the fermentation tank for bio-fertilizer production proposed in the above application may also have the following additional technical features:
[0009] Specifically, a sealing strip is fixed on one side of the grille, and a groove adapted to the sealing strip is opened on the other side of the grille.
[0010] Specifically, the filtration device includes multiple sets of negative plates, multiple sets of positive plates, electrode plates, and filter bags. The electrode plates are disposed on the outer wall of the ventilation frame and have multiple sets of negative and positive ends. The negative plates are electrically connected to the negative ends of the electrode plates, and the positive plates are electrically connected to the positive ends of the electrode plates. A filter port is opened on the bottom surface of the ventilation frame, and one end of the filter bag is connected to the filter port of the ventilation frame.
[0011] Specifically, the air intake device includes several sets of air intake fans, and the multiple sets of air intake fans are located at the air outlet end of the filter device.
[0012] Specifically, the ventilation frame has an L-shaped structure, and the inner wall of the ventilation frame is cylindrical at the bend. A fan shaft is rotatably connected at this position. The outer wall of the fan shaft is provided with multiple sets of fan blades arranged in a ring array. An air intake motor is fixed to the outer wall of the ventilation frame, and the output end of the air intake motor is connected to the fan shaft.
[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0014] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:
[0015] Figure 1 This is a schematic diagram of the fermentation tank for producing bio-fertilizer according to this utility model;
[0016] Figure 2 This is a schematic diagram of the grid and its connecting components in the fermentation tank for producing bio-fertilizer according to this utility model;
[0017] Figure 3 This is a schematic diagram of the structure of an embodiment of the air inlet device in a fermenter for producing bio-fertilizer according to this utility model;
[0018] Figure 4 This is a schematic diagram of another embodiment of the air inlet device in the fermenter for producing bio-fertilizer according to this utility model.
[0019] As shown in the figure: 1. Ventilation frame; 2. Grille; 3. Gear; 4. Shaft; 5. Rack; 6. Linear motor; 7. Negative plate; 8. Positive plate; 9. Electrode plate; 10. Filter bag; 11. Inlet fan; 12. Fan shaft; 13. Fan blade; 14. Inlet motor. Detailed Implementation
[0020] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Rather, the embodiments of the present invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.
[0021] The following describes a fermentation tank for producing bio-fertilizer according to an embodiment of the present invention, with reference to the accompanying drawings.
[0022] like Figures 1-4 As shown in the figure, the fermenter for producing bio-fertilizer according to an embodiment of the present invention has a fermentation port on its outer wall, including:
[0023] Ventilation rack 1, the outlet of ventilation rack 1 is set at the fermentation port of fermentation tank.
[0024] There are multiple sets of grilles 2, which are rotatably connected to the air inlet of the ventilation frame 1 via shaft 4.
[0025] One end of the gear 3 and shaft 4 extends to the outside of the ventilation frame 1. The gear 3 is provided at one end of the shaft 4. A rack 5 is slidably connected to the side wall of the ventilation frame 1. The rack 5 meshes with the gear 3. A linear motor 6 is fixed to the outside of the ventilation frame 1. The linear motor 6 is connected to one side of the rack 5.
[0026] The air intake device is installed on the inner wall of the ventilation rack 1. Its main function is to actively blow air into the fermentation tank, enhance the air circulation, ensure that there is sufficient air with a suitable flow rate in the fermentation tank, and promote the aerobic respiration and other reactions of microorganisms during the fermentation process of microbial fertilizer.
[0027] The filter device is installed on the inner wall of the ventilation rack 1 and is located at the air outlet of the grille 2. It can purify the air entering the ventilation rack 1 to remove dust, impurities and harmful microorganisms that may affect the fermentation of microbial fertilizer, thereby creating a relatively clean and stable gas environment for the fermentation of microbial fertilizer, which helps to improve the quality and fermentation efficiency of microbial fertilizer.
[0028] Specifically, when the linear motor 6 is started, it drives the rack 5 to move linearly, and then through the transmission action of the gear 3, it causes the shaft 4 to rotate, thereby opening and closing the grille 2, thus controlling the airflow and velocity entering the ventilation rack 1 to meet the ventilation requirements of different fermentation stages.
[0029] In one embodiment of this application, a sealing strip is fixed on one side of the grille 2, and a groove adapted to the sealing strip is provided on the other side of the grille 2.
[0030] Specifically, the sealing strip is fixed to one side of the grille 2 and is typically made of a material with some elasticity, such as rubber. It can fit tightly against the surface of the object, effectively preventing gas leakage. Correspondingly, a groove is opened on the other side of the grille 2, the size and shape of which are adapted to the sealing strip.
[0031] In one embodiment of this application, the filtration device includes multiple sets of negative plates 7, multiple sets of positive plates 8, electrode plates 9, and filter bags 10. The electrode plates 9 are disposed on the outer wall of the ventilation frame 1. The electrode plates 9 are provided with multiple sets of negative and positive ends. The negative plates 7 are electrically connected to the negative ends of the electrode plates 9, and the positive plates 8 are electrically connected to the positive ends of the electrode plates 9. The bottom surface of the ventilation frame 1 is provided with a filter port, and one end of the filter bag 10 is connected to the filter port of the ventilation frame 1.
[0032] Specifically, the cathode plate 7 is electrically connected to the cathode end of the electrode plate 9, and the anode plate 8 is electrically connected to the anode end. When energized, a strong electric field is formed between the cathode plate 7 and the anode plate 8. When air flows through this area, charged particles, microorganisms, and other impurities in the air will move directionally due to the electric field. Positively charged particles move towards the cathode plate 7 and are adsorbed, while negatively charged particles move towards the anode plate 8 and are captured, thus achieving preliminary air purification and removing most of the charged impurities and some microorganisms from the air. Airborne dust flows to the filter bag 10 for easy cleaning.
[0033] In one embodiment of this application, such as Figure 3 As shown, the air intake device includes several sets of air intake fans 11, and the multiple sets of air intake fans 11 are located at the air outlet of the filter device.
[0034] Specifically, after the intake fan 11 is started, the motor drives the fan blades 13 to rotate at high speed, creating a negative pressure inside the ventilation frame 1. This causes the filtered air to flow in rapidly and be delivered into the fermentation tank at a certain speed and flow rate. By adjusting parameters such as the speed and number of intake fans 11, the amount of air entering the fermentation tank can be flexibly controlled to meet the oxygen and other gas requirements of the microbial fertilizer at different fermentation stages, promote the growth and metabolism of microorganisms, and ensure the smooth progress of the microbial fertilizer fermentation process.
[0035] In one embodiment of this application, such as Figure 4 As shown, the ventilation frame 1 has an L-shaped structure. The inner wall of the ventilation frame 1 is cylindrical at the bend. A fan shaft 12 is rotatably connected at this position. The outer wall of the fan shaft 12 is provided with multiple sets of fan blades 13 arranged in a ring array. An air intake motor 14 is fixed to the outer wall of the ventilation frame 1. The output end of the air intake motor 14 is connected to the fan shaft 12.
[0036] Specifically, when air flows through the bend of the L-shaped ventilation frame 1, the airflow speed increases significantly due to the sudden contraction and reversal of the space. This high-speed airflow impacts the fan blades 13, causing the fan shaft 12 to rotate. The rotating fan blades 13 act like small propellers, further accelerating the airflow.
[0037] Specifically, in actual operation, when the linear motor 6 starts, it drives the rack 5 to move linearly, which in turn rotates the shaft 4 through the transmission action of the gear 3, thus opening and closing the grille 2. This allows for precise control of airflow according to the microbial state at each stage of bio-fertilizer fermentation, yielding significant benefits. Initially, the small grille 2 is opened to provide a small amount of slow-moving air, aiding microbial adaptation. During the logarithmic growth phase, the grille 2 is opened significantly to meet its vigorous oxygen demand and accelerate fermentation. During the stable phase, a moderate opening maintains microbial life and environmental stability, improving the quality of the bio-fertilizer. During the decline phase, the grille 2 is closed significantly to reduce oxygen and inhibit harmful reactions.
[0038] In summary, the fermentation tank for producing bio-fertilizer according to this embodiment of the invention extends the fermentation cycle and maintains product quality by controlling the airflow and velocity entering the ventilation rack 1, thereby meeting the ventilation requirements of different fermentation stages.
[0039] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0040] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0041] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A fermentation tank for producing bio-fertilizer, characterized in that, The outer wall of the fermentation tank has fermentation openings, including: Ventilation frame (1), the output port of which is located at the fermentation port of the fermenter; The grilles (2) are in multiple sets, and the grilles (2) are rotatably connected to the air inlet of the ventilation frame (1) via shafts (4); Gear (3), one end of the shaft (4) extends to the outside of the ventilation frame (1), one end of the shaft (4) is provided with gear (3), the side wall of the ventilation frame (1) is slidably connected with rack (5), the rack (5) meshes with gear (3), the outside of the ventilation frame (1) is fixed with linear motor (6), the linear motor (6) is connected to one side of rack (5); An air intake device is disposed on the inner wall of the ventilation frame (1); A filter device is disposed on the inner wall of the ventilation frame (1) and the filter device is located at the air outlet end of the grille (2).
2. The fermentation tank for producing bio-fertilizer according to claim 1, characterized in that, A sealing strip is fixed on one side of the grille (2), and a groove adapted to the sealing strip is provided on the other side of the grille (2).
3. The fermentation tank for bio-fertilizer production according to claim 1, characterized in that, The filtration device includes multiple sets of negative plates (7), multiple sets of positive plates (8), electrode plates (9), and filter bags (10). The electrode plates (9) are disposed on the outer wall of the ventilation frame (1). The electrode plates (9) are provided with multiple sets of negative and positive ends. The negative plates (7) are electrically connected to the negative ends of the electrode plates (9), and the positive plates (8) are electrically connected to the positive ends of the electrode plates (9). The bottom surface of the ventilation frame (1) is provided with a filter port, and one end of the filter bag (10) is connected to the filter port of the ventilation frame (1).
4. The fermenter for producing bio-fertilizer according to any one of claims 1-3, characterized in that, The air intake device includes several sets of air intake fans (11), and the multiple sets of air intake fans (11) are located at the air outlet end of the filter device.
5. The fermenter for producing bio-fertilizer according to any one of claims 1-3, characterized in that, The ventilation frame (1) has an L-shaped structure. The inner wall of the ventilation frame (1) is cylindrical at the bend. A fan shaft (12) is rotatably connected at this position. The outer wall of the fan shaft (12) is provided with multiple sets of fan blades (13) arranged in a ring array. An air intake motor (14) is fixed on the outer wall of the ventilation frame (1). The output end of the air intake motor (14) is connected to the fan shaft (12).