Gas supply structure for fermentation tank

Abstract

The utility model relates to the technical field of fermentation, in particular to an air supply structure for a fermentation tank, which comprises an air distribution disc arranged at the bottom of the fermentation tank, the air distribution disc is communicated with an air inflation pipe, a plurality of air inflation holes are arranged on the upper surface of the air distribution disc, and a movable cover for preventing backflow is arranged on the upper portions of the air inflation holes. A gas distribution disc is arranged at the bottom of the gas distribution disc, a plurality of upward branch pipes are arranged on the gas distribution disc, and a plurality of gas outlets are formed in the branch pipes, so that gas can quickly reach each corner when supplemented gas is used for auxiliary fermentation, the gas supplementing amount is more uniform, the control of an ORP (oxidation reduction potential) value is promoted, and the fermentation effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fermentation, in particular to an air supply structure for a fermentation tank. Background Art

[0002] In the corn alcohol fermentation process, aeration is usually stopped at the beginning of the fermentation to create an anaerobic environment to encourage yeast to carry out alcohol fermentation. However, in some cases, in order to optimize the fermentation process, it is necessary to add air to the fermentation tank at a specific time. This is usually related to the control of oxidation-reduction potential (ORP).

[0003] According to research, ventilation is stopped at the initial stage of fermentation. When the ORP value drops below the set value, the controller turns on the air pump to pump air at a rate of 0.8L / min to increase the ORP to the set value. The change trend of the ORP value divides the ethanol fermentation process into the ORP decline period, the ORP stabilization period, and the ORP rise period. During the ORP decline period, the yeast cells are in the retardation period and the logarithmic period. The rapid growth of the cells consumes the dissolved oxygen in the fermentation liquid, causing the ORP value to drop rapidly. When the ORP value drops to the set value, it enters the ORP stabilization period. At this time, the ORP value is maintained near the set value by introducing air into the fermentation tank. Studies have shown that when the ORP control value is -150mV, the ethanol yield, sugar alcohol conversion rate, and fermentation efficiency are all optimal.

[0004] Most of the existing gas supply devices are a pipe with holes on the side. It is found during use that the gas dispersion during the gas supply process is relatively concentrated, which will cause excessive gas supply in some areas of the fermentation tank and insufficient gas supply in other areas, resulting in untimely control of the ORP value. Utility Model Content

[0005] The utility model aims to overcome the disadvantage of uneven distribution when replenishing gas in a fermentation tank in the prior art, and provides a gas supply structure for the fermentation tank.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the utility model specifically adopts the following technical scheme: an air supply structure for a fermentation tank, comprising an air distribution plate arranged at the bottom of the fermentation tank, the air distribution plate is connected to an inflation pipe, a plurality of inflation holes are arranged on the upper surface of the air distribution plate, a movable cover for preventing backflow is arranged on the upper part of the inflation hole, an air distribution plate is arranged at the bottom of the air distribution plate, a plurality of upward branch pipes are arranged on the air distribution plate, and a plurality of air outlets are arranged on the branch pipes.

[0007] Furthermore, the air distribution disk is in the shape of a disk that is thick in the middle and thin at the edges and hollow inside, and the inflation tube is arranged in the middle of the air distribution disk.

[0008] Furthermore, a through hole is provided on the side wall of the inflation tube and is connected to the gas distribution plate, and the bottom of the inflation tube is connected to the gas distribution plate.

[0009] Furthermore, a groove for accommodating a movable cover is provided at the top of the inflation hole, a movable column penetrating the top cover of the gas distribution disk is provided in the middle position of the movable cover, a spring is wound around the outer side of the movable column, and the spring is provided below the top cover of the gas distribution disk.

[0010] Furthermore, a plurality of through holes are provided at the bottom of the groove and are connected to the interior of the gas distribution plate.

[0011] Furthermore, a one-way valve is arranged at the bottom of the branch pipe, and the air outlet is arranged at the upper part of the branch pipe.

[0012] The beneficial effects of the embodiments of the utility model are as follows: external gas enters the interior of the gas distribution plate through the inflation pipe, and is evenly distributed to each branch pipe through the gas distribution plate; since a one-way valve is installed at the bottom of the branch pipe, the gas can only flow in one direction, thereby ensuring the stability and safety of the gas distribution; the gas enters the fermentation tank through the gas outlet on the upper part of the branch pipe, and is evenly diffused into the entire fermentation tank through the inflation holes on the gas distribution plate, so that when gas is replenished for auxiliary fermentation, the gas can quickly reach every corner, making the gas replenishment amount more uniform, promoting the control of the ORP value, and improving the fermentation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the movable cover of the utility model;

[0016] In the figure: 1, inflation pipe; 2, air distribution plate; 201, movable cover; 202, movable column; 3, branch pipe; 301, one-way valve; 302, air distribution plate. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0018] See also Figures 1 to 3The utility model embodiment discloses an air supply structure for a fermentation tank, including an air distribution plate 2 arranged at the bottom of the fermentation tank. The air distribution plate 2 is designed to be a circular disk shape with a thick middle and thin edges and a hollow interior to improve its structural strength and stability, and can assist the inflation holes at the edges to inflate. A plurality of inflation holes are arranged on the upper surface of the air distribution plate 2, and these inflation holes are used to evenly distribute gas to the inside of the fermentation tank. These inflation holes are regularly arranged in a circular array to ensure that the gas can be evenly diffused to the bottom of the fermentation tank.

[0019] At the upper part of the inflation hole, a movable cover 201 for preventing backflow is provided. The movable cover 201 can be lifted up by the airflow when the gas passes through, allowing the gas to pass through. When the airflow stops, the movable cover 201 is reset under the action of the spring to prevent liquid or other substances from flowing back into the inflation tube 1. The movable cover 201 is made of lightweight material and can be easily lifted up by the airflow when the gas passes through. At the same time, under the action of the spring, it can be quickly reset when the airflow stops, effectively preventing liquid or other substances from flowing back into the inflation tube 1.

[0020] In order to ensure the normal operation of the movable cover 201, a groove is provided on the top of each inflation hole to accommodate the movable cover 201. A movable column 202 penetrating the top cover of the gas distribution disk 2 is provided in the middle position of the movable cover 201. A spring is wound around the outer side of the movable column 202. The spring is arranged under the top cover of the gas distribution disk 2 to provide elastic force for the movable cover 201 to reset. At the same time, a plurality of through holes are provided at the bottom of the groove. These through holes are connected to the inside of the gas distribution disk 2 to ensure that the gas can smoothly enter the fermentation tank.

[0021] An inflation tube 1 is provided at the central position of the gas distribution plate 2. A through hole is provided on the side wall of the inflation tube 1 to communicate with the gas distribution plate 2 so that the gas can smoothly enter the gas distribution plate 2. The bottom of the inflation tube 1 is connected with the gas distribution plate 302 to evenly distribute the gas to each branch pipe 3. A gas distribution plate 302 is provided at the bottom of the gas distribution plate 2 to evenly distribute the gas to each branch pipe 3. The gas distribution plate 302 is provided with a plurality of upward branches 3. The height of the branch pipe 3 accounts for about three quarters of the height of the fermenter. A one-way valve 301 is provided at the bottom of the branch pipe 3 to ensure that the gas can only flow in one direction, further improving the stability and safety of the gas supply structure. A plurality of gas outlets are provided on the upper part of the branch pipe 3 to ensure that the gas can be evenly and effectively dispersed to every corner of the fermenter.

[0022] Working principle: When the fermentation tank needs to be fed with gas, the external gas enters the gas distribution plate 2 through the inflation pipe 1, and is evenly distributed to each branch pipe 3 through the gas distribution plate 302. Since a one-way valve 301 is installed at the bottom of the branch pipe 3, the gas can only flow in one direction, thereby ensuring the stability and safety of gas distribution. The gas enters the fermentation tank through the gas outlet at the top of the branch pipe 3, and is evenly diffused into the entire fermentation tank through the inflation holes on the gas distribution plate 2.

[0023] When the gas stops entering, the movable cover 201 is quickly reset under the action of the spring to prevent liquid or other substances from flowing back into the inflation pipe 1, further improving the stability and safety of the gas supply structure, so that when the gas is replenished for auxiliary fermentation, the gas can quickly reach every corner, making the gas replenishment more uniform, promoting the control of the ORP value, and improving the fermentation effect.

[0024] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0026] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0027] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A gas supply structure for a fermentation tank, comprising a gas distribution plate (2) arranged at the bottom of the fermentation tank, characterized in that: The gas distribution plate (2) is connected to an inflation pipe (1), a plurality of inflation holes are arranged on the upper surface of the gas distribution plate (2), a movable cover (201) for preventing backflow is arranged on the upper part of the inflation hole, a gas distribution plate (302) is arranged at the bottom of the gas distribution plate (2), a plurality of upward branch pipes (3) are arranged on the gas distribution plate (302), and a plurality of gas outlets are arranged on the branch pipes (3).

2. The gas supply structure for a fermentation tank according to claim 1, characterized in that: The gas distribution disk (2) is in the shape of a disk that is thick in the middle and thin at the edges and hollow inside, and the inflation tube (1) is arranged in the middle of the gas distribution disk (2).

3. The gas supply structure for a fermentation tank according to claim 2, characterized in that: A through hole is provided on the side wall of the inflation tube (1) and is in communication with the gas distribution plate (2); the bottom of the inflation tube (1) is in communication with the gas distribution plate (302).

4. The gas supply structure for a fermentation tank according to claim 1, characterized in that: A groove for accommodating a movable cover (201) is arranged at the top of the inflation hole, a movable column (202) penetrating the top cover of the gas distribution plate (2) is arranged in the middle of the movable cover (201), a spring is wound around the outer side of the movable column (202), and the spring is arranged below the top cover of the gas distribution plate (2).

5. The gas supply structure for a fermentation tank according to claim 4, characterized in that: The bottom of the groove is provided with a plurality of through holes which are in communication with the interior of the gas distribution plate (2).

6. The gas supply structure for a fermentation tank according to claim 1, characterized in that: A one-way valve (301) is provided at the bottom of the branch pipe (3), and the air outlet is provided at the upper part of the branch pipe (3).

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