A fermentation tank for improving uniformity of material mixing

Abstract

The utility model belongs to the technical field of biological fermentation equipment, specifically disclose a kind of fermentation tank for improving material mixing uniformity, including the feed inlet with sealing cover being arranged in the upper side of jar body, the discharge outlet with sealing cover is arranged in the lower side of another side, there is also the first agitator and second agitator being arranged to rotate in different directions in jar body, first agitator includes the first motor being fixed in the upper side of jar body and the first stirring paddle in jar body, and first motor drives first stirring paddle counterclockwise or clockwise rotation by the first drive shaft extending into jar body;Second agitator includes the second motor being fixed in the lower side of jar body and the second stirring paddle in jar body, and second motor drives second rotating paddle clockwise or counterclockwise rotation by the second drive shaft extending into jar body.The utility model can improve the distribution uniformity of fermentation bacteria, and then shorten fermentation period, compared with traditional fermentation tank, fermentation bacteria distribution uniformity is improved to 95%, and fermentation period is shortened by 18%.

Description

Technical Field

[0001] This utility model relates to the field of biological fermentation equipment technology, specifically to a fermentation tank that improves the uniformity of material mixing. Background Technology

[0002] A fermenter is a container used in bio-fermentation processes and is widely used in the food, beverage, biopharmaceutical, and chemical industries. It provides a controlled environment for the growth and reproduction of microorganisms (such as bacteria, yeast, or fungi), which can transform raw materials into useful products such as alcohol, organic acids, biofuels, and antibiotics during fermentation.

[0003] Existing fermentation tank mixing devices generally include single-layer agitators, multi-layer paddle agitators, and mechanical crushing agitators. These agitators all have certain drawbacks in fermentation tanks, easily leading to uneven mixing of materials or uneven distribution of the fermentation broth. For example, with a single-layer agitator, the fluid inside the tank tends to form laminar flow due to unidirectional rotation, resulting in insufficient axial mixing of materials, and the bacteria tend to settle at the bottom. While multi-layer paddle agitators expand the mixing range, the fixed blade spacing makes it difficult to adapt to the flow characteristics of materials with different viscosities. Mechanical crushing blades, although able to break up bacterial clumps, can damage bacterial activity due to high-speed shearing and cannot achieve real-time dispersion. To further improve the performance of fermenters, the problems of uneven material mixing and uneven distribution of the fermentation broth must be solved. Utility Model Content

[0004] The purpose of this invention is to provide a fermenter that improves the uniformity of material mixing by solving the problems of uneven material mixing and poor material distribution in the prior art.

[0005] This utility model is achieved through the following technical solution: a fermentation tank for improving the uniformity of material mixing, comprising a tank body with a feed inlet with a sealing cap on one side and a discharge outlet with a sealing cap on the other side. The tank body also includes a first agitator and a second agitator that rotate in different directions. The first agitator includes a first motor fixed above the tank body and a first stirring paddle located inside the tank body. The first motor drives the first stirring paddle to rotate counterclockwise or clockwise through a first drive shaft extending into the tank body. The second agitator includes a second motor fixed below the tank body and a second stirring paddle located inside the tank body. The second motor drives the second stirring paddle to rotate clockwise or counterclockwise through a second drive shaft extending into the tank body.

[0006] The working principle of this technical solution is that by setting two stirring rods in different directions inside the fermenter, differential stirring and reverse stirring can be achieved inside the tank. This breaks through the limitation of the single motion dimension of traditional stirrers, which can significantly improve the uniformity of the distribution of fermentation cells and thus shorten the fermentation cycle.

[0007] To better realize this utility model, the first drive shaft and the second drive shaft are coaxial, and their ends are nested together and connected by a double-row angular contact bearing to achieve coaxial reverse differential rotation.

[0008] To better realize this utility model, the gap between the first drive shaft and the second drive shaft is further 2mm.

[0009] To better realize this utility model, furthermore, both the blades of the first stirring paddle and the blades of the second stirring paddle are provided with a plurality of guide holes.

[0010] To better realize this utility model, the guide holes are further distributed along the axial direction of the blade, and the axis of the guide holes forms a 45° angle with the surface of the blade.

[0011] To better realize this utility model, the diameter of the guide hole is further 3mm~8mm, and the diameter of the guide hole is larger closer to the root of the blade.

[0012] To better realize this utility model, the lower part of the tank is further provided with several supporting feet.

[0013] To better realize this utility model, the first stirring paddle blade is made of 304 stainless steel.

[0014] To better realize this utility model, the material of the second stirring paddle blade is 306L stainless steel.

[0015] Compared with the prior art, this utility model has the following advantages and beneficial effects: (1) By setting two stirring rods in different directions inside the fermentation tank, the present invention can realize differential stirring and reverse stirring inside the tank, breaking through the limitation of the single motion dimension of the traditional stirrer, which can significantly improve the uniformity of the distribution of fermentation cells and thus shorten the fermentation cycle. (2) The present invention also provides a flow guide hole for the blade. The axis of the flow guide hole is at an angle to the surface of the blade. Therefore, during the stirring process, the blade also has a good shearing effect, which can further improve the uniformity of the distribution of fermentation cells and thus shorten the fermentation cycle. Attached Figure Description

[0016] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a partially enlarged structural diagram of point A in this utility model.

[0017] Wherein: 1—tank body, 2—first agitator, 21—first motor, 22—first stirring paddle, 23—first drive shaft, 3—second agitator, 31—second motor, 32—second stirring paddle, 33—second drive shaft, 4—double row angular contact bearing, 5—guide hole, 7—feed inlet, 8—discharge outlet, 9—support foot. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments 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 are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, 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. Therefore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly including one or more of the feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1:

[0021] The main structure of this embodiment is as follows: Figure 1 As shown, the tank 1 includes a feed inlet 7 with a sealing cap on one side and a discharge outlet 8 with a sealing cap on the other side. Inside the tank 1, there is also a first agitator 2 and a second agitator 3 that rotate in different directions. The first agitator includes a first motor 21 fixed above the tank 1 and a first agitator 22 located inside the tank 1. The first motor 21 drives the first agitator 22 to rotate counterclockwise or clockwise through a first drive shaft 23 extending into the tank 1. The second agitator 3 includes a second motor 31 fixed below the tank 1 and a second agitator 32 located inside the tank 1. The second motor 31 drives the second agitator 32 to rotate clockwise or counterclockwise through a second drive shaft 33 extending into the tank 1.

[0022] The specific usage process is as follows: the material is added into the tank 1 through the feed inlet 7, and stirred by the first agitator 2 and the second agitator 3 rotating in opposite directions. The first agitator 2 is located at the upper part of the tank 1, and the second agitator 3 is located at the lower part of the tank 1. The first motor 21 drives the first drive shaft 23, which in turn drives the first stirring paddle 22 to rotate counterclockwise or clockwise. The second motor 31 drives the second drive shaft 33, which in turn drives the second stirring paddle 32 to rotate in the opposite direction to the first stirring paddle. The rotational speeds of the first stirring paddle 31 and the second stirring paddle 32 can be controlled by adjusting the power of the first motor 21 and the second motor 23, achieving counter-clockwise differential rotation of the first stirring paddle 31 and the second stirring paddle 32. This stirs the material in the tank 1, improves the uniformity of the distribution of fermentation cells in the tank 1, and thus shortens the fermentation cycle. Example 2:

[0023] This embodiment, based on the above embodiment, further defines the connection relationship between the first stirrer 2 and the second stirrer 3, such as... Figure 1 As shown, the first drive shaft 23 and the second drive shaft 33 are coaxial, with their ends nested together, and connected by a double-row angular contact bearing 4 to achieve coaxial reverse differential rotation. Since the first stirrer 2 and the second stirrer 3 rotate at opposite speeds, they are significantly affected, especially the first drive shaft 23 and the second drive shaft 33, which bear a heavy load. Therefore, the first drive shaft 23 and the second drive shaft 33 are coaxial, nested together, and connected by a double-row angular contact bearing 4 to achieve reverse rotation at different speeds, thereby reducing the load on the first drive shaft 23 and the second drive shaft 33, improving their service life and stirring stability. Other parts of this embodiment are the same as those in the above embodiment and will not be repeated. Example 3:

[0024] This embodiment, based on the above embodiment, further defines the connection relationship between the first stirrer 2 and the second stirrer 3, such as... Figure 1 As shown, the gap between the first drive shaft 23 and the second drive shaft 33 is 2mm. The gap between the first drive shaft 23 and the second drive shaft 33 is essentially the difference in their cross-sectional radii. Based on practical experience with fermenters, a radius difference of 2mm is preferred for the first drive shaft 23 and the second drive shaft 33. The other parts of this embodiment are the same as those in the above embodiments and will not be repeated. Example 4:

[0025] This embodiment, based on the above embodiment, further defines the structure of the first stirrer 2 and the second stirrer 3, such as... Figure 2 As shown, both the blades of the first stirring paddle 22 and the blades of the second stirring paddle 32 are provided with a plurality of guide holes 5. The guide holes 5 are provided to allow the blades to have a shearing effect on the liquid material in the tank, further improving the uniformity of bacterial distribution. The other parts of this embodiment are the same as those in the above embodiment, and will not be described again. Example 5:

[0026] This embodiment, based on the above embodiment, further defines the structure of the first stirrer 2 and the second stirrer 3, such as... Figure 2 As shown, the guide holes 5 are distributed along the axial direction of the blade, and the axis of the guide holes 5 forms a 45° angle with the blade surface. This arrangement of the guide holes 5 is also to allow the blade to have a better shearing effect on the material. The other parts of this embodiment are the same as those in the above embodiment and will not be repeated. Example 6:

[0027] This embodiment, based on the above embodiment, further defines the structure of the first stirrer 2 and the second stirrer 3, such as... Figure 2 As shown, the diameter of the guide hole 5 is 3mm to 8mm, with the diameter increasing closer to the blade root. Generally, there are three guide holes 5 on a single blade. Since the material mixing speed is slower closer to the blade root, for better shearing effect, the diameter of the farthest hole at the blade root is 3mm, the middle hole is 5mm, and the hole closest to the blade root is 8mm. Other parts of this embodiment are the same as those in the previous embodiment and will not be repeated. Example 7:

[0028] This embodiment, based on the above embodiment, further adds a support foot 9, such as... Figure 1As shown, the lower part of the tank 1 is provided with several supporting feet 9. Since motors are installed at both the top and bottom of the tank 1, the tank 1 needs to have a certain height. Here, supporting members 9 are installed at the bottom of the tank 1 to increase the height of the tank 1. Alternatively, other frames can be used to raise the tank 1 itself. The other parts of this embodiment are the same as those in the above embodiment and will not be described again. Example 8:

[0029] This embodiment, based on the above embodiment, further specifies the material of the first stirring paddle 22 blades, such as... Figure 1 As shown, the blades of the first stirring paddle 22 are made of 304 stainless steel. The other parts of this embodiment are the same as those in the above embodiments and will not be described again. Example 9:

[0030] This embodiment, based on the above embodiment, further specifies the material of the second stirring paddle 32 blades as 316L stainless steel. The other parts of this embodiment are the same as those in the above embodiment and will not be repeated.

[0031] It is understood that the working principle and process of the fermentation tank structure for improving material mixing uniformity according to one embodiment of the present invention, such as the double-row angular contact bearing 4, are existing technologies and are well known to those skilled in the art, and will not be described in detail here.

[0032] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A fermenter for improving the uniformity of material mixing, characterized in that, The tank (1) includes a feed inlet (7) with a sealing cap on one side and a discharge outlet (8) with a sealing cap on the other side. The tank (1) also includes a first agitator (2) and a second agitator (3) that rotate in different directions. The first agitator includes a first motor (21) fixed above the tank (1) and a first agitator (22) located inside the tank (1). The first motor (21) drives the first agitator (22) to rotate counterclockwise or clockwise through a first drive shaft (23) extending into the tank (1). The second agitator (3) includes a second motor (31) fixed below the tank (1) and a second agitator (32) located inside the tank (1). The second motor (31) drives the second agitator (32) to rotate clockwise or counterclockwise through a second drive shaft (33) extending into the tank (1).

2. The fermentation tank for improving material mixing uniformity according to claim 1, characterized in that, The first drive shaft (23) and the second drive shaft (33) are coaxial and their ends are nested together and connected by a double-row angular contact bearing (4) to achieve coaxial reverse differential rotation.

3. A fermenter for improving the uniformity of material mixing according to claim 2, characterized in that, The gap between the first drive shaft (23) and the second drive shaft (33) is 2mm.

4. A fermenter for improving the uniformity of material mixing according to claim 1 or 2, characterized in that, Both the blades of the first stirring paddle (22) and the blades of the second stirring paddle (32) are provided with several guide holes (5).

5. A fermenter for improving the uniformity of material mixing according to claim 4, characterized in that, The guide holes (5) are distributed along the axial direction of the blade, and the axis of the guide holes (5) forms a 45° angle with the surface of the blade.

6. A fermenter for improving the uniformity of material mixing according to claim 5, characterized in that, The diameter of the guide hole (5) is 3mm to 8mm, and the diameter of the guide hole (5) is larger the closer it is to the root of the blade.

7. A fermenter for improving the uniformity of material mixing according to claim 1 or 2, characterized in that, The lower part of the tank (1) is provided with several support feet (9).

8. A fermenter for improving the uniformity of material mixing according to claim 1 or 2, characterized in that, The blades of the first stirring paddle (22) are made of 304 stainless steel.

9. A fermenter for improving the uniformity of material mixing according to claim 1 or 2, characterized in that, The blades of the second stirring paddle (32) are made of 316L stainless steel.

Images