Gas dissolving device for fermentation liquor

Abstract

The utility model discloses an air dissolving device for fermentation liquor, which relates to the technical field of fermentation tanks and comprises a tank body, a rotating shaft, a spiral stirring blade and a liquid inlet pipe are arranged on the tank body through a tank cover, an air inlet pipe is arranged on the tank body, a fixing plate is arranged in the air inlet pipe, a supporting rod and a sealing gasket are further arranged in the air inlet pipe through a mounting plate, and a spring is further sleeved on the outer side of the supporting rod. One end of the spring is connected with the supporting plate on the supporting rod, the other end of the spring is connected with the mounting plate, and a liquid outlet pipe is arranged at the bottom of the tank body and provided with a valve. Under the action of the sealing gasket, the supporting rod and the spring, the one-way flowing function of the air inlet pipe can be achieved, the situation that fermentation liquor and air flow back through the air inlet pipe is reduced, the dissolved air quality of the fermentation liquor is guaranteed, the fermentation liquor can be stirred under the action of the spiral stirring blade, and the stirring effect is good. Therefore, the fermentation liquor can be more fully mixed with the gas, and the gas dissolving quality of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of fermentation tank technology, specifically a gas-dissolving device for fermentation liquid. Background Technology

[0002] Dissolved oxygen refers to oxygen in its molecular state dissolved in water. Oxygen is a sparingly soluble gas; under normal pressure and 25°C, the solubility of oxygen in pure water is only about 0.25 mmol / L. In fermentation broth, the presence of various dissolved nutrients, inorganic salts, and microbial metabolic products significantly reduces oxygen solubility. Since aerobic microorganisms require oxygen for growth and metabolism, the dissolved oxygen concentration in the fermentation broth is a key factor affecting aerobic fermentation and has a significant impact on microbial production and product formation: increasing the dissolved oxygen concentration can accelerate the aerobic fermentation process and improve reaction efficiency.

[0003] A utility model patent with authorization announcement number CN213951169U discloses a gas-dissolving device for fermentation broth, including a vertically arranged gas-dissolving tank with an inlet at the upper end and an outlet at the lower end. A downward-facing ventilation pipe is fixed to the gas-dissolving tank, extending into the tank. An inlet pipe connected to the inlet also extends into the tank, with its outlet directly above the outlet of the ventilation pipe. This utility model utilizes a dedicated gas-dissolving tank. The fermentation broth enters the tank through the inlet and exits through the outlet. By using an inlet pipe extending into the tank and placing the outlet of the ventilation pipe directly below the outlet, the fermentation broth can directly and fully contact the gas within the ventilation pipe, thus increasing the dissolved oxygen concentration. Furthermore, the downward-facing orientation of the ventilation pipe reduces or eliminates the risk of blockage at the outlet, improving the reliability of the gas-dissolving tank operation.

[0004] In actual use, the above-mentioned device is prone to backflow of fermentation liquid or liquid through the air pipe, which reduces the efficiency of the air inlet pipe and thus affects the quality of dissolved gas in the fermentation liquid. Utility Model Content

[0005] The purpose of this invention is to provide a gas-dissolving device for fermentation broth to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A gas-dissolving device for fermentation broth includes a tank body with a tank cover at the top. A rotating shaft is rotatably mounted on the tank cover, and a spiral stirring blade is mounted on the rotating shaft. A liquid inlet pipe is also provided on the tank cover, and an air inlet pipe is also provided on the tank body. A fixing plate with an opening is also provided inside the air inlet pipe, and an mounting plate is also provided below the fixing plate inside the air inlet pipe. A plurality of through holes are evenly provided on the mounting plate, and a support rod is slidably mounted on the mounting plate. A sealing gasket that cooperates with the fixing plate is provided at the top end of the support rod, and a spring is also sleeved on the outside of the support rod. One end of the spring is connected to a support plate on the support rod, and the other end of the spring is connected to the mounting plate. A liquid outlet pipe with a valve is also provided at the bottom of the tank body.

[0008] As a further embodiment of this utility model: a drive gear is also provided inside the can lid via a rotating shaft, and a driven gear is also provided on the rotating shaft inside the can lid via a key connection, with the driven gear meshing with the drive gear.

[0009] As a further improvement of this utility model: the can lid is provided with a plurality of mounting holes evenly distributed, and fixing bolts are provided in the mounting holes by means of threaded connection.

[0010] As a further improvement of this utility model: a motor is also provided on the top of the can lid, and the power output shaft of the motor is connected to the rotating shaft of the drive gear through a coupling.

[0011] As a further improvement of this utility model, several support legs are evenly provided on the side wall of the tank.

[0012] As a further improvement of this utility model, a mounting shell is also fitted on the outside of the spring.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. With the help of the sealing gasket, support rod and spring, the air inlet pipe can achieve unidirectional flow, which reduces the backflow of fermentation liquid and gas through the air inlet pipe, thereby ensuring the efficiency of the air inlet pipe and improving the dissolved gas quality of the fermentation liquid.

[0015] 2. The fermentation broth can be stirred by the spiral stirring blades, so that the fermentation broth can be mixed more fully with the gas, thereby improving the dissolved gas quality of the device. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0017] Figure 2 This is a bottom view of the structure of an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the internal structure of the tank in an embodiment of this utility model.

[0019] Figure 4 This is a schematic diagram of the structure at point A in an embodiment of this utility model.

[0020] Figure reference numerals: 1. Tank body; 101. Support leg; 2. Tank cover; 201. Fixing bolt; 3. Drive gear; 301. Motor; 4. Rotating shaft; 5. Driven gear; 6. Spiral agitator blade; 7. Liquid inlet pipe; 8. Liquid outlet pipe; 801. Valve; 9. Air inlet pipe; 10. Fixing plate; 11. Mounting plate; 1101. Through hole; 12. Mounting shell; 13. Support rod; 14. Spring; 15. Sealing gasket. Detailed Implementation

[0021] The following embodiments will be described in detail with reference to the accompanying drawings. In the drawings and description, similar or identical parts are referred to by the same reference numerals. Furthermore, in practical applications, the shape, thickness, or height of each component may be enlarged or reduced. The embodiments listed in this utility model are merely illustrative and not intended to limit the scope of the utility model. Any obvious modifications or alterations made to this utility model do not depart from its spirit and scope.

[0022] Example

[0023] Please see Figures 1-4 In this embodiment of the present invention, a fermentation liquid dissolving device includes a tank body 1, a tank cover 2 on the top of the tank body 1, and a plurality of mounting holes evenly arranged on the tank cover 2. A fixing bolt 201 is threadedly connected to each mounting hole, allowing the tank cover 2 to be mounted on the tank body 1, thus ensuring the airtightness of the tank body 1. A plurality of support legs 101 are also evenly arranged on the side wall of the tank body 1, ensuring the stability of the tank body 1. Furthermore, the detachable tank cover 2 facilitates the removal of the cover by workers, allowing for cleaning of the inside of the tank body 1, reducing the possibility of residual fermentation liquid affecting the subsequent dissolving gas quality of the fermentation liquid, and ensuring the efficiency of the device.

[0024] Inside the can lid 2, a drive gear 3 is installed via a rotating shaft. A rotating shaft 4 is also rotatably mounted on the can lid 2, with a spiral stirring blade 6 mounted on the shaft 4. A driven gear 5 is also connected to the shaft 4 inside the can lid 2 via a key. The driven gear 5 meshes with the drive gear 3. Rotating the drive gear 3 will drive the shaft 4 to rotate via the driven gear 5, thereby driving the spiral stirring blade 6 to rotate and stirring the fermentation liquid in the can body 1. The can lid 2 is also equipped with a liquid inlet pipe 7, with the inlet end of the liquid inlet pipe 7 connected to the outlet end of the fermentation liquid. The liquid inlet pipe 7 can be used to introduce the fermentation liquid into the can body 1, thus ensuring the subsequent gas dissolution process of the fermentation liquid. A motor 301 is also installed on the top of the can lid 2. The power output shaft of the motor 301 is connected to the rotating shaft of the drive gear 3 via a coupling. The motor 301 can drive the rotating shaft 4 to rotate via the drive gear 3 and the driven gear 5.

[0025] The bottom of the tank body 1 is also equipped with a liquid outlet pipe 8, and a valve 801 is installed on the liquid outlet pipe 8. Under the action of the liquid outlet pipe 8, the fermentation liquid after gas dissolution can be discharged. Opening the valve 801 can realize the opening and closing of the liquid outlet pipe 8, thereby facilitating the discharge of the fermentation liquid and ensuring the efficiency of the device.

[0026] The tank body 1 is also equipped with an air inlet pipe 9. The air inlet end of the air inlet pipe 9 is connected to an external gas device. At this time, the gas required for gas dissolution can be introduced into the tank body 1 through the air inlet pipe 9 using the gas device, so that the fermentation liquid can carry out gas dissolution.

[0027] Inside the air inlet pipe 9, there is a fixing plate 10 with an opening. Below the fixing plate 10, there is an mounting plate 11 inside the air inlet pipe 9. The mounting plate 11 has several through holes 1101 evenly distributed on it. A support rod 13 is slidably mounted on the mounting plate 11. A sealing gasket 15, which mates with the fixing plate 10, is located at the top end of the support rod 13. The sealing gasket 15 seals the opening on the fixing plate 10. In actual use, when dissolving gas in the fermentation liquid, the operator uses the liquid inlet pipe 7 to introduce the fermentation liquid into the tank 1, and then uses the air inlet pipe 9 to introduce gas into the tank 1. When the gas enters the air inlet pipe 9, the pressure pushes the sealing gasket 15 downwards, causing the gas to... The fermentation liquid enters the tank 1 through the through holes 1101 on the fixed plate 10 and the mounting plate 11, thereby allowing the fermentation liquid and gas to dissolve and ensuring the efficiency of the device. A spring 14 is also sleeved on the outside of the support rod 13. One end of the spring 14 is connected to the support plate on the support rod 13, and the other end of the spring 14 is connected to the mounting plate 11. Under the action of the spring 14, the sealing gasket 15 can block the opening on the fixed plate 10, thereby achieving the sealing of the air inlet pipe 9, reducing the backflow of gas and fermentation liquid, and ensuring the efficiency of the device. A mounting shell 12 is also sleeved on the outside of the spring 14. Under the action of the mounting shell 12, the spring 14 and the support rod 13 can be protected, thereby ensuring the efficiency of the sealing gasket 15.

[0028] In actual use, when it is necessary to dissolve gas in the fermentation broth, the operator introduces the fermentation broth into the tank 1 through the liquid inlet pipe 7 and introduces the gas into the tank 1 through the gas inlet pipe 9. The motor 301 is started, and the driving gear 3, driven gear 5 and rotating shaft 4 drive the spiral stirring blade 6 to rotate, stirring the fermentation broth. This allows the fermentation broth to better mix with the gas, thereby improving the dissolving gas operation of the device. In addition, under the action of the sealing gasket 15, support rod 13 and spring 14, the unidirectional flow function of the gas inlet pipe 9 can be realized, reducing the occurrence of gas and fermentation broth backflow through the gas inlet pipe 9 and ensuring the efficiency of the gas inlet pipe 9.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for dissolving gas in fermentation broth, comprising a tank (1), characterized in that, The tank body (1) is provided with a tank cover (2) on top. A rotating shaft (4) is rotatably provided on the tank cover (2). A spiral stirring blade (6) is provided on the rotating shaft (4). A liquid inlet pipe (7) is also provided on the tank cover (2). An air inlet pipe (9) is also provided on the tank body (1). A fixing plate (10) is also provided inside the air inlet pipe (9). An opening is provided on the fixing plate (10). An installation plate (11) is also provided inside the air inlet pipe (9) below the fixing plate (10). The installation plate (11) is evenly distributed with... The tank has several through holes (1101). A support rod (13) is slidably mounted on the mounting plate (11). A sealing gasket (15) that works with the fixing plate (10) is provided at the top end of the support rod (13). A spring (14) is also sleeved on the outside of the support rod (13). One end of the spring (14) is connected to the support plate on the support rod (13), and the other end of the spring (14) is connected to the mounting plate (11). A liquid outlet pipe (8) is also provided at the bottom of the tank (1), and a valve (801) is provided on the liquid outlet pipe (8).

2. The dissolved gas device for fermentation broth according to claim 1, characterized in that, Inside the can lid (2), a drive gear (3) is provided via a rotating shaft. Inside the can lid (2), a driven gear (5) is also provided via a key on the rotating shaft (4). The driven gear (5) meshes with the drive gear (3).

3. The dissolved gas device for fermentation broth according to claim 1, characterized in that, The can lid (2) is provided with several mounting holes evenly distributed, and fixing bolts (201) are provided in the mounting holes by threaded connection.

4. The dissolved gas device for fermentation broth according to claim 2, characterized in that, The top of the can lid (2) is also equipped with a motor (301), and the power output shaft of the motor (301) is connected to the rotating shaft of the drive gear (3) through a coupling.

5. The dissolved gas device for fermentation broth according to claim 1, characterized in that, The tank body (1) is also provided with several feet (101) evenly distributed on its side wall.

6. The dissolved gas device for fermentation broth according to claim 1, characterized in that, The spring (14) is also fitted with a mounting shell (12) on its outer side.

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