Horizontal solid state fermentation tank

Abstract

The utility model discloses a horizontal solid state fermentation tank, including the jar body, the inlet and the air inlet are opened to the jar body, is equipped with the aeration pipeline in the jar body, and the aeration pipeline one end is connected with the air inlet, is installed with a plurality of branch aeration pipeline on the aeration pipeline, and the aeration pipeline is communicated with the branch aeration pipeline inside, and a plurality of aeration inlets are opened on the branch aeration pipeline, from the aeration pipeline with the air inlet connection one end to the aeration pipeline other end, and the number of aeration inlet on the branch aeration pipeline gradually increases. The utility model passes through adjusting the distribution and the number of aeration pipeline structure and aeration inlet, and promotes the homogeneity of oxygen supply in the fermentation tank.

Description

Technical Field

[0001] This utility model relates to the field of fermentation equipment technology, and in particular to a horizontal solid-state fermentation tank. Background Technology

[0002] In the traditional solid-state fermentation of grain vinegar, aerobic microorganisms such as acetic acid bacteria play a central role in the fermentation system. Their metabolic activities directly determine the efficiency of ethanol oxidation to acetic acid and the final flavor and quality of the vinegar. To ensure that these aerobic bacteria can achieve stable and efficient metabolic reactions in a high-solids, relatively closed fermentation environment, it is necessary to continuously supply oxygen to the fermentation system.

[0003] Currently, most solid-state fermentation tanks are connected to external gas storage tanks, with compressed air or oxygen directly introduced into the tank via air intake pipes laid on both sides. Because the pipes are designed for fixed-point gas supply, oxygen tends to concentrate in localized areas near the vents, making it difficult to diffuse fully throughout the solid material layer. This results in severely uneven oxygen distribution within the fermentation tank, particularly in the center, upper layers, or areas far from the vents. This creates an oxygen-deficient environment, hindering the growth and reproduction of aerobic microorganisms. Consequently, this leads to a reduced acid production rate during fermentation, insufficient flavor compound formation, and easy proliferation of unwanted microorganisms, significantly impacting the sensory quality and physicochemical properties of the finished vinegar. Summary of the Invention

[0004] Purpose of the invention: To address the shortcomings of uneven oxygen distribution in existing fermenters, this invention provides a horizontal solid-state fermenter that can improve the uniformity of oxygen supply in different areas within the fermenter.

[0005] Technical solution: To solve the above problems, this utility model adopts a horizontal solid-state fermentation tank, including a tank body with a feed inlet and an air inlet. An air venting pipe is provided inside the tank body, with one end of the air venting pipe connected to the air inlet. Several auxiliary air venting pipes are installed on the air venting pipe, and the air venting pipe and the auxiliary air venting pipes are internally connected. Several air vents are opened on the auxiliary air venting pipes. From the end of the air venting pipe connected to the air inlet to the other end of the air venting pipe, the number of air vents on the auxiliary air venting pipes gradually increases.

[0006] Furthermore, two ventilation pipes are symmetrically installed inside the tank. One end of the two ventilation pipes is connected to each other and connected to the air inlet. The air inlet is equipped with a baffle plate.

[0007] Furthermore, the auxiliary ventilation pipe is rotatably mounted on the ventilation pipe via a rotating device, and the rotating device is equipped with a positioning device for fixing the rotation angle of the auxiliary ventilation pipe.

[0008] Furthermore, the rotating device is sleeved on the ventilation pipe, the auxiliary ventilation pipe is fixedly installed on the rotating device, the ventilation pipe has multiple first positioning holes located on the same circumference, the rotating device has a second positioning hole, and the positioning pin is installed in the second positioning hole and one of the first positioning holes.

[0009] Furthermore, the vent is located on the side of the secondary vent pipe away from the feed inlet.

[0010] Furthermore, a filter element is installed inside the secondary ventilation duct.

[0011] Furthermore, a filter screen is provided at the vent.

[0012] Beneficial effects: Compared with the prior art, the significant advantage of this utility model is that by adjusting the structure of the ventilation pipe and the distribution and number of ventilation ports, the uniformity of oxygen supply in the fermenter is improved; the rotation angle of the ventilation pipe can be flexibly adjusted according to the amount of material to ensure the oxygen supply effect; the ventilation port and the auxiliary ventilation pipe are equipped with a filter structure to filter impurities and particles in the material and gas, preventing long-term accumulation that could lead to blockage of the ventilation pipe. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the horizontal solid-state fermentation tank of this utility model; Figure 2 This is a side sectional view of the horizontal solid-state fermentation tank of this utility model; Figure 3 This is a schematic diagram of the rotating device of the horizontal solid fermentation tank of this utility model; Figure 4 This is a schematic diagram of the internal structure of the auxiliary ventilation pipe of the horizontal solid fermenter of this utility model. Detailed Implementation

[0014] like Figures 1 to 4 As shown, a horizontal solid-state fermentation tank in this embodiment includes a tank body 7. The sides of the tank body 7 are hemispherical, and the middle is cylindrical, giving it an overall horizontal shape. The tank body 7 has a feed inlet and an air inlet. The feed inlet is located at the top of the tank body 7, and the air inlet is located on one of the hemispherical sides of the tank body 7.

[0015] Two ventilation pipes 2 are symmetrically installed inside the tank body 7. One end of the two ventilation pipes 2 is connected to each other and connected to the air inlet. The air inlet is equipped with a gas distribution baffle 4, which is located in the middle position to make the gas evenly distributed to the two ventilation pipes 2.

[0016] The auxiliary ventilation pipe 1 is rotatably installed on the ventilation pipe 2 via the rotating device 6, and the ventilation pipe 2 is internally connected to the auxiliary ventilation pipe 1. Several ventilation ports 3 are opened on the auxiliary ventilation pipe 1. The ventilation ports 3 are located on the side of the auxiliary ventilation pipe 1 away from the feed inlet, that is, on the lower side of the auxiliary ventilation pipe 1, to prevent the material from blocking the ventilation ports 3 when feeding from the top feed inlet.

[0017] Three secondary ventilation pipes 1 are installed at equal intervals on each ventilation pipe 2. From the end of ventilation pipe 2 connected to the air inlet to the other end, the number of vents 3 on the secondary ventilation pipes 1 gradually increases. The cross-sectional area of ​​the secondary ventilation pipes 1 gradually decreases from the end connected to the ventilation pipe 2 to the other end. Gas enters the secondary ventilation pipes 1 through ventilation pipe 2. Since the gas flow rate is fixed, the flow rate is larger near the air inlet and smaller further away. By setting more vents 3 on the secondary ventilation pipes 1 further away from the air inlet and fewer vents 3 on the secondary ventilation pipes 1 closer to the air inlet, a uniform oxygen distribution at different vents can be maintained. This design effectively utilizes the characteristics of gas flow rate, achieving equal gas distribution at each vent by adjusting the number and distribution of vents.

[0018] A filter element 5 is installed inside the secondary ventilation pipe 1, and a filter screen is installed at the ventilation port 3. The filter screen is mainly used to prevent large particles from clogging the ventilation port 3 during fermentation, while the filter element 5 is mainly used to prevent small particles from entering the ventilation pipe during fermentation and to prevent long-term accumulation from causing blockage of the ventilation pipe.

[0019] The rotating device 6 is mounted on the ventilation pipe 2, and a sealing device is provided between them to ensure gas flow within the pipe without leakage. The auxiliary ventilation pipe 1 is fixedly installed on the rotating device 6. Multiple first positioning holes 21 are located on the same circumference on the ventilation pipe 2, and the rotating device 6 has a second positioning hole 61. A positioning pin 8 is installed in the second positioning hole 61 and one of the first positioning holes 21. The rotation angle of the auxiliary ventilation pipe 1 can be adjusted according to the feed rate of the fermenter to regulate the distance between the ventilation port of the auxiliary ventilation pipe 1 and the material, achieving better oxygen supply. In this embodiment, five first positioning holes are provided, with each hole spaced 15° apart, allowing the auxiliary ventilation pipe 1 to rotate around the ventilation pipe 2 within a 75° range.

[0020] The working principle of this invention is as follows: The material to be processed enters the tank through the feed inlet. The rotating device 6 is rotated according to the feed rate to adjust the rotation angle of the auxiliary ventilation pipe 1, maintaining a suitable distance between it and the material. The air inlet is connected to an external oxygen supply device, and oxygen sequentially enters the ventilation pipe 2, the auxiliary ventilation pipe 1, and flows out through the ventilation port 3, supplying oxygen to the material. This invention improves the uniformity of oxygen supply within the fermenter by adjusting the structure of the ventilation pipes and the distribution and number of ventilation ports.

Claims

1. A horizontal solid-state fermenter, comprising a tank body (7), wherein the tank body (7) has a feed inlet and an air inlet, characterized in that, The tank (7) is equipped with a ventilation pipe (2), one end of which is connected to the air inlet; several auxiliary ventilation pipes (1) are installed on the ventilation pipe (2), and the ventilation pipe (2) is internally connected to the auxiliary ventilation pipes (1). Several ventilation ports (3) are opened on the auxiliary ventilation pipes (1); from the end of the ventilation pipe (2) connected to the air inlet to the other end of the ventilation pipe (2), the number of ventilation ports (3) on the auxiliary ventilation pipes (1) gradually increases.

2. The horizontal solid-state fermentation tank as described in claim 1, characterized in that, Two ventilation pipes (2) are symmetrically installed inside the tank (7). One end of the two ventilation pipes (2) is connected to each other and connected to the air inlet. A gas distribution baffle (4) is provided inside the air inlet.

3. The horizontal solid-state fermentation tank as described in claim 1, characterized in that, The auxiliary ventilation pipe (1) is rotatably installed on the ventilation pipe (2) by a rotating device (6), and the rotating device (6) is provided with a positioning device for fixing the rotation angle of the auxiliary ventilation pipe (1).

4. The horizontal solid-state fermentation tank as described in claim 3, characterized in that, The rotating device (6) is sleeved on the ventilation pipe (2), the auxiliary ventilation pipe (1) is fixedly installed on the rotating device (6), the ventilation pipe (2) has multiple first positioning holes (21) located on the same circumference, the rotating device (6) has a second positioning hole (61), and the positioning pin (8) is installed in the second positioning hole (61) and one of the first positioning holes (21).

5. The horizontal solid-state fermentation tank as described in claim 3, characterized in that, The vent (3) is located on the side of the auxiliary vent pipe (1) away from the feed inlet.

6. The horizontal solid-state fermentation tank as described in claim 1, characterized in that, A filter element (5) is installed inside the secondary ventilation pipe (1).

7. The horizontal solid-state fermentation tank as described in claim 1, characterized in that, A filter screen is provided at the vent (3).

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