Microbial fermentation tank capable of efficiently defoaming

Abstract

The utility model relates to the field of microbial fermentation, in particular to an efficient defoaming microbial fermentation tank, which comprises a fermentation tank with a built-in stirring system, a defoaming tank is mounted on the fermentation tank, a tank cavity of the defoaming tank is a sealed cavity, and a working end of an air pump for pumping and charging is communicated with the top of the defoaming tank. One end of a suction pipe used for being communicated with the fermentation tank extends to the position above the liquid level in the fermentation tank, the other end of the suction pipe extends to the bottom of a tank body in the defoaming tank, and stirring blades used for defoaming are coaxially fixed to the bottom of the defoaming tank. According to the defoaming device, efficient defoaming of the microbial fermentation tank can be realized.

Description

Technical Field

[0001] The utility model relates to the field of microbial fermentation, in particular to a microbial fermentation tank with high-efficiency defoaming. Background Art

[0002] Fermentation tank refers to a device used for microbial fermentation in industry, which is used for mechanical stirring and fermentation of materials. As described in the patent number "CN220867379U", the existing fermentation tank is equipped with a feed pipe on one side of the top of the fermentation tank, and a discharge pipe is installed at the bottom of the fermentation tank corresponding to the feed pipe. An air charging mechanism is provided, and air is introduced through an air pump. Through the function of a filter, an ultraviolet lamp and a reflector, the air is conveniently purified and sterilized, ensuring the purity of the input air and preventing miscellaneous bacteria from entering the fermentation tank to affect the fermentation quality of the microbial inoculant. However, during the fermentation process of the fermentation tank, due to the production of ventilation, stirring, metabolic gases and the presence of surfactants such as proteins, oils, and fatty acids, the fermentation liquid will produce a certain amount of foam. Once the volume of the equipment cannot accommodate the excess foam, the foam will overflow, causing the loss of raw materials and causing waste. If the foam increases and causes liquid escape, the culture medium will stick to the exhaust pipe, causing the growth of miscellaneous bacteria, so it is urgent to solve it. Utility Model Content

[0003] In order to avoid and overcome the technical problems existing in the prior art, the utility model provides a microbial fermentation tank with high efficiency in defoaming. The utility model can achieve high efficiency in defoaming of the microbial fermentation tank.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A microbial fermentation tank with high efficiency defoaming comprises a fermentation tank with a built-in stirring system, a defoaming tank is installed on the fermentation tank, the tank cavity of the defoaming tank is a sealed cavity, the working end of a dual-purpose air pump for pumping and charging is connected to the top of the defoaming tank, one end of a suction pipe for connecting to the fermentation tank extends to above the liquid level in the fermentation tank, and the other end of the suction pipe extends to the bottom of the tank body in the defoaming tank, and a stirring blade for defoaming is coaxially fixed to the bottom of the defoaming tank.

[0006] As a further solution of the utility model: the fermentation tank is a double-layer tank body, and a temperature control serpentine tube spirally arranged around the inner tank is installed in the clamping cavity of the fermentation tank. The temperature control serpentine tube is connected to the semiconductor refrigeration and heating module through a medium delivery pipe to deliver refrigeration medium or heating medium.

[0007] As a further solution of the utility model: a stirring motor is installed on the top of the fermentation tank, the motor shaft of the stirring motor is coaxially fixed with the stirring shaft through a reducer, the stirring shaft coaxially extends into the tank cavity of the fermentation tank, and a stirring paddle for stirring materials is fixed on the stirring shaft.

[0008] As a further solution of the utility model: baffles are evenly spaced radially in the fermenter, and each baffle surrounds the outer ring of the stirring paddle.

[0009] As a further solution of the utility model: an air inlet is coaxially arranged at the bottom of the fermenter, a feed port is installed at the top of the fermenter, and a liquid outlet, a sampler and an air outlet are installed on the tank wall of the fermenter in sequence from bottom to top.

[0010] As a further solution of the utility model: a sensor connector extending into the tank cavity of the fermenter is installed on the top of the fermenter, and the sensor connector is used to connect a temperature sensor, a pressure sensor and a liquid level sensor.

[0011] As a further solution of the utility model: universal wheels are installed at the four corner ends of the bottom of the fermentation tank.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. During the defoaming operation of the utility model, the dual-purpose air pump for pumping and filling first pumps air, and the defoaming tank enters a negative pressure state at this time. Under the action of negative pressure, the foam on the liquid surface of the fermentation tank is sucked into the defoaming tank along the suction pipe. The stirring blade is started, and the foam is sheared and centrifugally defoamed under the high-speed rotation of the stirring blade, so that the foam turns back into liquid. After the defoaming is completed, the dual-purpose air pump for pumping and filling inflates the defoaming tank, so that the defoaming tank is in a positive pressure state. Under the action of positive pressure, the liquid in the defoaming tank is pressed back into the fermentation tank through the suction pipe, and the defoaming operation is completed.

[0014] 2. The utility model sets the fermentation tank as a double-layer tank body, installs a spiral temperature control serpentine tube in the clamp cavity, and connects the temperature control serpentine tube to the semiconductor refrigeration and heating module. Under the switching of the refrigeration and heating effects of the semiconductor refrigeration and heating module, the fermentation tank can be cooled and heated in real time to keep the fermentation temperature in the best state at all times; the arrangement of the baffle can avoid the generation of vortexes in the fermentation tank, change the flow direction of the liquid, and make the stirring more uniform.

[0015] 3. The air inlet, feed port, liquid outlet, sampler and air outlet of the utility model are arranged at different heights, so as to respectively perform air inlet and outlet, sampling and liquid inlet and outlet operations; the arrangement of the sensor connector can monitor the working conditions in the tank in real time, replenish air or liquid and control the temperature in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] In the figure:

[0018] 1. Fermentation tank; 11. Air inlet; 12. Liquid outlet; 13. Sampler; 14. Baffle;

[0019] 15. Air outlet; 16. Feeding port; 17. Sensor connector; 18. Universal wheel;

[0020] 2. Stirring motor; 21. Stirring paddle; 31. Temperature control serpentine tube; 32. Medium conveying pipe;

[0021] 4. Defoaming tank; 41. Suction pipe; 42. Stirring blade; 43. Dual-purpose air pump for suction and filling. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 In the embodiment of the utility model, a microbial fermentation tank with high efficiency of defoaming includes a double-layer fermentation tank 1, the inner tank cavity of the fermentation tank 1 is used for microbial fermentation, and the sandwich cavity between the outer tank and the inner tank of the fermentation tank 1 is used to install a temperature control serpentine tube 31, and the temperature control serpentine tube 31 is spirally arranged from bottom to top and fits with the inner tank wall of the fermentation tank 1. The diameter of the temperature control serpentine tube 31 is preferably equal to the spacing between the inner tank and the outer tank of the fermentation tank 1, and the fixing method thereof can be welding fixing or bracket support fixing. In order to facilitate the movement of the fermentation tank 1, universal wheels 18 can be installed at the four corner ends of the bottom of the fermentation tank 1 so that it can be moved at any time.

[0024] The temperature control serpentine 31 is preferably connected to the semiconductor refrigeration and heating module through the medium conveying pipe 32, so as to realize the circulation and conveying of the medium. Since the semiconductor refrigeration and heating module is a prior art and can be directly purchased, the structure is not described in detail. After the temperature control serpentine 31 conveys the medium, the medium is cooled or heated by the semiconductor refrigeration and heating module, so that the heating and cooling of the materials in the fermentation tank 1 can be realized. When the temperature control serpentine 31 is heated, the internal medium is hot steam, and when the temperature control serpentine 31 is cooled, the internal medium is condensed water. Compared with traditional methods, semiconductor heating and refrigeration can quickly achieve heating and cooling, and provide a suitable fermentation temperature for microorganisms.

[0025] A stirring motor 2 is installed on the top of the fermentation tank 1. The motor shaft of the stirring motor 2 is coaxially fixed with the stirring shaft through a reducer. The stirring shaft coaxially extends into the tank cavity of the fermentation tank 1, and a stirring paddle 21 for stirring the material is fixed on the stirring shaft. In order to avoid vortexes during stirring, baffles 14 are evenly arranged radially in the tank cavity of the inner tank of the fermentation tank 1, and each baffle 14 is evenly arranged around the stirring paddle 21.

[0026] A feeding port 16 is installed on the top of the fermentation tank 1, and an air inlet 11 for inflating the tank body is coaxially installed on the top. A liquid outlet 12, a sampler 13 and an air outlet 15 are installed on the side wall from bottom to top, wherein the heights of the liquid outlet 12 and the sampler 13 are lower than the liquid level in the fermentation tank 1, and the height of the air outlet 15 is higher than the liquid level in the fermentation tank 1.

[0027] The fermenter 1 is provided with a sensor connector 17 extending into the tank cavity of the fermenter 1. The sensor connector 17 is used to connect a temperature sensor, a pressure sensor and a liquid level sensor. The working temperature in the fermenter 1 is monitored by the temperature sensor, and the medium temperature in the temperature control serpentine tube 31 is adjusted in real time according to the temperature change to heat or cool the material in the fermenter 1. When the sensor detects that the foam exceeds the warning line, the defoaming device is automatically started.

[0028] A defoaming tank 4 for eliminating foam is installed outside the fermentation tank 1. A suction pipe 41 is arranged inside the defoaming tank 4. One end of the suction pipe 41 is located at the bottom of the defoaming tank 4. The other end of the suction pipe 41 passes through the defoaming tank 4 and extends into the fermentation tank 1, and is located above the liquid level in the fermentation tank 1. The tank cavities of the defoaming tank 4 and the fermentation tank 1 are both sealed cavities. A pumping and charging dual-purpose air pump 43 is installed on the top of the tank body of the defoaming tank 4. The working end of the pumping and charging dual-purpose air pump 43 is connected to the top of the tank body of the defoaming tank 4. A stirring blade 42 driven to rotate by a motor is coaxially installed at the bottom of the defoaming tank 4. During the defoaming operation, the pumping and charging dual-purpose air pump 43 is firstly evacuated. At this time, the defoaming tank 4 enters a negative pressure state. Under the action of the negative pressure, the foam on the liquid surface of the fermentation tank 1 is sucked into the defoaming tank 4 along the suction pipe 41. Start the stirring blade 42, and shear and centrifuge the foam under the high-speed rotation of the stirring blade 42 to turn the foam into liquid again. After defoaming is completed, the dual-purpose air pump 43 inflates the defoaming tank 4 to make the defoaming tank 4 in a positive pressure state. Under the action of the positive pressure, the liquid in the defoaming tank 4 is pressed back into the fermentation tank 1 through the suction pipe 41 to complete the defoaming operation.

[0029] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0030] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

Claims

1. A microbial fermentation tank with high efficiency defoaming, characterized in that: The invention comprises a fermentation tank (1) with a built-in stirring system, a defoaming tank (4) being installed on the fermentation tank (1), the tank cavity of the defoaming tank (4) being a sealed cavity, a working end of a dual-purpose air pump (43) being connected to the top of the defoaming tank (4), one end of a suction pipe (41) for connecting with the fermentation tank (1) extending to above the liquid level in the fermentation tank (1), the other end of the suction pipe (41) extending to the bottom of the tank body in the defoaming tank (4), and a stirring blade (42) for defoaming being coaxially fixed to the bottom of the defoaming tank (4).

2. A microbial fermentation tank with high efficiency defoaming according to claim 1, characterized in that: The fermentation tank (1) is a double-layer tank body. A temperature control serpentine tube (31) arranged spirally around the inner tank is installed in the clamping cavity of the fermentation tank (1). The temperature control serpentine tube (31) is connected to the semiconductor refrigeration and heating module through a medium delivery pipe (32) to deliver refrigeration medium or heating medium.

3. A microbial fermentation tank with high efficiency defoaming according to claim 1 or 2, characterized in that: A stirring motor (2) is installed on the top of the fermentation tank (1); the motor shaft of the stirring motor (2) is coaxially fixed to the stirring shaft via a reducer; the stirring shaft coaxially extends into the tank cavity of the fermentation tank (1); and a stirring paddle (21) for stirring materials is fixed on the stirring shaft.

4. A microbial fermentation tank with high efficiency defoaming according to claim 3, characterized in that: Baffles (14) are evenly spaced in the radial direction in the fermentation tank (1), and each baffle (14) surrounds the outer ring of the stirring paddle (21).

5. A microbial fermentation tank with high efficiency defoaming according to claim 1 or 2, characterized in that: The fermentation tank (1) has an air inlet (11) coaxially arranged at the bottom, a feed port (16) installed at the top of the fermentation tank (1), and a liquid outlet (12), a sampler (13) and an air outlet (15) installed in sequence from bottom to top on the tank wall of the fermentation tank (1).

6. A microbial fermentation tank with high efficiency defoaming according to claim 1 or 2, characterized in that: A sensor connector (17) extending into the tank cavity of the fermenter (1) is installed on the top of the fermenter (1), and the sensor connector (17) is used to connect a temperature sensor, a pressure sensor and a liquid level sensor.

7. A microbial fermentation tank with high efficiency defoaming according to claim 1 or 2, characterized in that: Universal wheels (18) are installed at the four corner ends of the bottom of the fermentation tank (1).

Images