Temperature control device for biological fermentation tank

Abstract

The utility model provides a biological fermentation tank temperature control device which comprises a tank body, an opening is formed in the top of the tank body, a sealing cover is arranged at the opening, a sealing gasket is arranged between the sealing cover and the opening, spiral temperature control pipes are installed on the left side and the right side of the outer wall of the tank body, and fins are installed on the outer walls of the temperature control pipes located on the left side and the right side. The top ends of the left and right temperature control pipes are communicated with a cold water pipe and a hot water pipe respectively, one end of the cold water pipe and one end of the hot water pipe are provided with circulating pumps through flanges, and the bottom ends of the left and right temperature control pipes are communicated with butt joint pipes. According to the utility model, the spiral temperature control pipe surrounds the tank body, so that the contact area with the tank body is increased, cold and hot water can exchange heat with fermentation liquor in the tank more sufficiently when circulating in the pipe, the temperature regulation requirement can be responded more quickly no matter in the heating or cooling process, the time for reaching the target temperature is effectively shortened, and the energy consumption is reduced. And the temperature control efficiency in the fermentation process is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of bioengineering technology, more specifically, it relates to a temperature control device for a biological fermentation tank. BACKGROUND

[0002] Fermentation is a crucial biological process in many industries, and temperature has a key influence on the fermentation result. In the fermentation process, the growth, reproduction and metabolism of microorganisms are closely related to temperature, and each kind of microorganism has its suitable temperature interval. For example, in yogurt fermentation, lactic acid bacteria have the best activity at 40-45 DEG C, and too high or too low temperature will make fermentation unable to proceed normally, resulting in the decline of product quality. Therefore, accurate control of the temperature of the fermentation tank is an important prerequisite for guaranteeing the smooth progress of fermentation.

[0003] Traditional fermentation tank temperature control technology gradually exposes many shortcomings in practical application. For example, some early temperature control methods have obvious shortcomings in heat exchange efficiency, and cannot quickly and effectively realize the rise and fall adjustment of the temperature in the fermentation tank, resulting in inaccurate temperature control, and it is difficult to meet the strict requirements of microorganisms on temperature in different fermentation stages. Therefore, it is urgent to develop a more optimized fermentation tank temperature control scheme to overcome the limitations of the prior art and meet the growing needs of modern biological fermentation engineering. UTILITY MODEL CONTENTS

[0004] In order to solve the above technical problems, the utility model provides a temperature control device for a biological fermentation tank, which is achieved by the following specific technical means:

[0005] A temperature control device for a biological fermentation tank, comprising a tank body, an opening is arranged at the top of the tank body, a sealing cover is arranged at the opening, a sealing gasket is arranged between the sealing cover and the opening, a temperature control pipe in a spiral shape is installed on the left and right sides of the outer wall of the tank body, a fin is installed on the outer wall of the left and right temperature control pipes, a cold water pipe and a hot water pipe are respectively connected to the top of the left and right temperature control pipes, a circulating pump is installed on one end of the cold water pipe and the hot water pipe through a flange, a butt joint pipe is installed at the bottom of the left and right temperature control pipes, and a valve body is installed through the butt joint pipe.

[0006] The transmission gears are connected with the gear train by the hinge parts of each end face of each gear, and the ring is connected with the gear of the gear train to form a round cam, and the ring is connected with the gear of the gear train to form a round cam.

[0007] Preferably, stirring blades are fixedly mounted on opposite sides of the two sets of retaining frames and on the outer wall of the stirring shaft, and the stirring blades on the two sets of retaining frames and the outer wall of the stirring shaft are spaced apart from each other.

[0008] Preferably, the side wall of the cover is fixedly connected to the inner wall of the tank, a driving motor is installed on one side of the top end of the cover, and the output end of the driving motor is transmission-connected to the top end of the driving rod.

[0009] Preferably, both sets of retaining frames are L-shaped retaining frames, and the bottom ends thereof are fixedly connected to the bottom end of the tank body.

[0010] Preferably, a water tank communicating with the bottom ends of the two sets of temperature control tubes is provided in the middle of the valve body, a baffle is rotatably installed in the water tank, a round shaft is installed on the top of the baffle, the top of the round shaft passes through and is installed on the top of the valve body, and a first gear is fixedly mounted on it, a first rack is meshed with one side of the first gear, an electric telescopic rod is installed on one end of the first rack, and the side wall of the electric telescopic rod is fixedly connected to the top of the valve body.

[0011] Preferably, it also includes an internal temperature sensor arranged near the center of the tank body and an external temperature sensor arranged on the outer wall of the tank body near the temperature control tube. The internal temperature sensor is used to monitor the core temperature of the fermentation liquid in the tank in real time, and its measurement accuracy is ±0.1°C. The external temperature sensor is used to monitor the temperature change of the outer wall of the tank body, and its measurement accuracy is ±0.2°C. Both the internal temperature sensor and the external temperature sensor are connected to the controller via a data line.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model uses a spiral temperature control tube that surrounds the tank body, increasing the contact area with the tank body. This allows hot and cold water to circulate more fully in the tube and exchange heat with the fermentation liquid in the tank. This allows for a faster response to temperature adjustment requirements, whether during heating or cooling, effectively shortening the time to reach the target temperature and improving the temperature control efficiency of the fermentation process.

[0014] 2. The fins installed on the outer wall of the temperature control tube of the utility model further enhance the heat conduction effect. As a high thermal conductivity metal material, the fins can quickly transfer the heat of the hot and cold water in the temperature control tube to the tank body, or dissipate the heat in the tank body, thereby accelerating the uniform distribution of heat on the surface of the tank body, reducing the temperature gradient, and making the temperature inside the tank more uniform and stable, which is conducive to the growth and fermentation of microorganisms in a stable temperature environment;

[0015] 3. The driving motor of the utility model drives the driving rod, rack, gear and other components through the transmission device, and then drives the first bevel gear to rotate. The first bevel gear is engaged with the two second bevel gears, and the two second bevel gears are engaged with the third bevel gear together. This multi-stage bevel gear transmission method can effectively change the direction and speed of force transmission, so that the stirring shaft and stirring blades can rotate efficiently. Multiple groups of stirring blades are respectively installed on the stirring shaft and the retaining frame, and are spaced apart from each other. During the stirring process, a full-dimensional and multi-level stirring flow field can be formed, so that the fermentation liquid is fully mixed in the tank, avoiding the problems of local uneven concentration and uneven distribution of nutrients, providing a uniform growth environment for microorganisms, and promoting the uniform progress of the fermentation reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional schematic diagram of the utility model Figure 1 .

[0017] Figure 2 This is a three-dimensional schematic diagram of the utility model Figure 2 .

[0018] Figure 3 It is a schematic diagram of the internal structure of the tank body of the utility model.

[0019] Figure 4 It is an enlarged schematic diagram of the internal structure of the valve body of the utility model.

[0020] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows:

[0021] 1. Tank body; 2. Temperature control tube; 3. Opening; 4. Cold water pipe; 5. Hot water pipe; 6. Circulation pump; 7. Fins; 8. Docking pipe; 9. Valve body; 10. Electric telescopic rod; 11. First rack; 12. First gear; 13. Baffle; 14. Retaining frame; 15. Cover plate; 16. Limit block; 17. Second rack; 18. Drive rod; 19. Second gear; 20. Agitator shaft; 21. First bevel gear; 22. Second bevel gear; 23. Third bevel gear. DETAILED DESCRIPTION

[0022] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0025] Example 1:

[0026] As attached Figure 1 To the attached Figure 4 As shown:

[0027] The utility model provides a temperature control device for a biological fermentation tank, comprising a tank body 1, an opening 3 being provided at the top of the tank body 1, a sealing cover being provided at the opening 3, a sealing gasket being provided between the sealing cover and the opening 3, spiral temperature control tubes 2 being installed on the left and right sides of the outer wall of the tank body 1, fins 7 being installed on the outer walls of the temperature control tubes 2 on the left and right sides, the top ends of the temperature control tubes 2 on the left and right sides being respectively connected with a cold water pipe 4 and a hot water pipe 5, one end of the cold water pipe 4 and the hot water pipe 5 being installed with a circulation pump 6 through a flange, the bottom ends of the temperature control tubes 2 on the left and right sides being connected with a butt joint pipe 8, and a valve body 9 being installed together through the butt joint pipe 8.

[0028] Example 2:

[0029] As attached Figure 1 To the attached Figure 4 As shown:

[0030] The stirring mechanism includes a cover plate 15 installed on the inner wall of the tank body 1, a driving rod 18 rotatably installed on one side of the bottom end of the cover plate 15, a second rack 17 hingedly connected to the bottom end of the driving rod 18, a second gear 19 meshingly connected to one side of the second rack 17, a connecting shaft installed at the bottom end of the second gear 19, a limiting block 16 sleeved on the outer wall of the top end of the connecting shaft to prevent the second rack 17 from falling off, a first bevel gear 21 fixedly sleeved on the bottom end of the connecting shaft, a second bevel gear 22 meshingly installed on both sides of the bottom end of the first bevel gear 21, a third bevel gear 23 commonly meshingly installed at the bottom end of the two second bevel gears 22, a stirring shaft 20 installed at the bottom end of the third bevel gear 23, a connecting shaft directly rotatably installed at the top end of the stirring shaft 20 and the bottom end of the first bevel gear 21, a retainer 14 rotatably installed on one side of each of the two second bevel gears 22, and the driving rod 18, the second rack 17, the second gear 19, the connecting shaft, the first bevel gear 21, the second bevel gear 22, the third bevel gear 23 and the stirring shaft 20 cooperatively form a complex and effective transmission system. This transmission mode can uniformly transmit the power of the driving motor to the stirring shaft 20, so that the stirring shaft 20 drives the stirring paddle to stably rotate, thereby fully mixing the fermentation liquid in all directions. In the fermentation process, the fermentation liquid at different positions can be fully mixed, avoiding the problems of material precipitation and local concentration unevenness, providing a uniform growth environment for microorganisms and being beneficial to efficient fermentation reaction.

[0031] The outer wall of the stirring shaft 20 and one side of each of the two retainers 14 are fixedly installed with stirring paddles, and the stirring paddles on the outer wall of the stirring shaft 20 and the two retainers 14 are arranged at intervals.

[0032] The side wall of the cover plate 15 is fixedly connected to the inner wall of the tank body 1, a driving motor is installed on one side of the top end of the cover plate 15, and the output end of the driving motor is in transmission connection with the top end of the driving rod 18.

[0033] The two retainers 14 are L-shaped retainers, and the bottom ends of the two retainers 14 are fixedly connected to the inner bottom end of the tank body 1.

[0034] Among them, the middle part of the valve body 9 is provided with a water tank connected to the bottom end of the two groups of temperature control tubes 2, and a baffle 13 is rotatably installed in the water tank. The top of the baffle 13 is installed with a circular shaft, and the top of the circular shaft is installed through the top of the valve body 9, and a first gear 12 is fixedly mounted on one side of the first gear 12. A first rack 11 is meshed and installed, and an electric telescopic rod 10 is installed at one end of the first rack 11. The side wall of the electric telescopic rod 10 is fixedly connected to the top of the valve body 9. The water tank in the middle of the valve body 9 is connected to the bottom end of the two groups of temperature control tubes 2. The baffle 13 rotatably installed in the water tank is composed of a circular shaft, a first gear 12, a first rack 11 and an electric telescopic rod 10. The transmission mechanism realizes precise control. The telescopic movement of the electric telescopic rod 10 drives the first rack 11 to move, and the first rack 11 drives the first gear 12 to rotate, thereby rotating the circular shaft and the baffle 13. By adjusting the angle of the baffle 13, the ratio of hot and cold water flowing into the water tank from the two sets of temperature control tubes 2 can be accurately controlled. When the temperature in the tank needs to be increased, the baffle 13 can be rotated to a suitable position to allow more hot water to flow into the water tank and enter the temperature control tube 2; when the temperature needs to be lowered, more cold water is allowed to flow in. This flexible adjustment method can quickly and accurately respond to temperature control needs and realize fine regulation of the temperature in the fermentation tank.

[0035] Among them, it also includes an internal temperature sensor arranged near the center of the tank body 1 and an external temperature sensor arranged on the outer wall of the tank body 1 near the temperature control tube 2. The internal temperature sensor is used to monitor the core temperature of the fermentation liquid in the tank in real time, and its measurement accuracy is ±0.1°C. The external temperature sensor is used to monitor the temperature change of the outer wall of the tank body 1, and its measurement accuracy is ±0.2°C. The internal temperature sensor and the external temperature sensor are both connected to the controller through a data cable. The internal temperature sensor is arranged near the center of the tank body 1 and can accurately monitor the core temperature of the fermentation liquid in the tank in real time. Its measurement accuracy is as high as ±0.1°C, which enables the controller to accurately grasp the most representative temperature conditions inside the fermentation liquid. Because during the fermentation process, the growth and metabolic activities of microorganisms mainly occur in the main part of the fermentation liquid, accurate monitoring of the core temperature is crucial to ensuring that the microorganisms are in a suitable temperature environment. For example, in some fermentation processes that are extremely sensitive to temperature, such as the production of certain enzyme preparations, a temperature accuracy of ±0.1°C can effectively avoid changes in enzyme activity caused by temperature fluctuations, thereby ensuring the quality and yield of the fermentation product.

[0036] The working principle of this embodiment is as follows: according to the fermentation process requirements, the target temperature range of the fermentation process is set on the controller. For example, for a specific microbial fermentation, the target temperature range may be set to 30°C-32°C. After the setting is completed, the temperature control device and the stirring mechanism are started;

[0037] The controller determines the current temperature state based on the set target temperature range and initial temperature data (provided by the internal temperature sensor and the external temperature sensor). If the initial temperature is lower than the lower limit of the target temperature range, the controller starts the circulation pump 6 to circulate the hot water in the hot water pipe 5. Driven by the circulation pump 6, the hot water flows through the spiral temperature control tube 2 and transfers heat to the tank body 1 through heat conduction, thereby heating the fermentation liquid in the tank. At the same time, the controller controls the extension and contraction of the electric telescopic rod 10 and adjusts the opening and closing angle of the baffle 13 in the valve body 9 to control the distribution ratio of the hot water in the temperature control tubes 2 on both sides, thereby achieving more accurate temperature regulation.

[0038] During the fermentation process, the internal temperature sensor monitors the core temperature of the fermentation liquid in the tank in real time, and the external temperature sensor continuously monitors the temperature changes of the outer wall of the tank body 1. The controller continuously receives these temperature data and compares them with the target temperature range. When the temperature inside the tank is lower than the lower limit of the target temperature range, the controller increases the flow rate of the circulation pump 6 to allow more hot water to enter the temperature control tube 2, speeding up the heating speed. At the same time, according to the temperature changes, the controller adjusts the extension and retraction of the electric telescopic rod 10 in time to optimize the distribution of hot water in the temperature control tube 2.

[0039] During the heating process, the stirring mechanism continues to operate, the driving motor drives the driving rod 18 to rotate, the driving rod 18 causes the second rack 17 to reciprocate, the second rack 17 drives the second gear 19 to rotate, the second gear 19 drives the first bevel gear 21 to rotate through the connecting shaft, the first bevel gear 21 drives the two second bevel gears 22 to rotate, and the two second bevel gears 22 jointly drive the third bevel gear 23 to rotate, thereby rotating the stirring shaft 20, and the stirring shaft 20 and the stirring blades on the retaining frame 14 stir the fermentation liquid. Stirring makes the fermentation liquid heated more evenly, accelerates the heat transfer in the tank, improves the heating efficiency, and avoids local overheating from causing damage to microorganisms.

[0040] When the temperature in the tank approaches the target temperature range, the controller gradually reduces the flow rate of the circulation pump 6 and slows down the heating rate to prevent the temperature from exceeding the upper limit of the target temperature range. At this time, the stirring mechanism continues to operate stably to ensure uniform mixing of substances in the fermentation liquid and promote the growth of microorganisms and the uniformity of metabolic reactions. The stirring speed can be appropriately adjusted according to the fermentation stage and temperature stability. For example, during the temperature stabilization period, the stirring speed can be appropriately reduced to reduce energy consumption, but the uniformity of the fermentation liquid must still be ensured.

[0041] When the temperature in the tank is higher than the upper limit of the target temperature range, the controller stops the hot water circulation and starts the cold water circulation in the cold water pipe 4. The cold water flows in the temperature control pipe 2, absorbs the heat of the tank body 1 and the fermentation liquid, and reduces the temperature. The controller also adjusts the distribution of the cold water in the temperature control pipe 2 by controlling the electric telescopic rod 10 to achieve efficient cooling. The stirring mechanism continues to stir during the cooling process, so that the temperature in the tank drops evenly, preventing local overcooling from forming a temperature gradient and affecting the fermentation effect.

[0042] The operator observes the temperature change curve in the fermentation tank, the operating status of the stirring mechanism (such as stirring speed, operating time, etc.), and the working parameters of the circulation pump 6 and the electric telescopic rod 10 in real time through the display screen of the controller. When the fermentation process is completed, the operator first stops the operation of the stirring mechanism on the controller, so that the drive motor stops driving the stirring shaft 20 and the stirring blades, and then stops the operation of the circulation pump 6, and stops the circulation of hot and cold water in the temperature control tube 2.

[0043] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A temperature control device for a biological fermentation tank, comprising a tank body (1), an opening (3) provided at the top of the tank body (1), a sealing cover provided at the opening (3), a sealing gasket provided between the sealing cover and the opening (3), characterized in that The outer wall of the tank body (1) is provided with spiral temperature control tubes (2) on both sides, and the outer walls of the temperature control tubes (2) on both sides are provided with fins (7). The top ends of the temperature control tubes (2) on both sides are connected with a cold water pipe (4) and a hot water pipe (5) respectively. One end of the cold water pipe (4) and the hot water pipe (5) are provided with a circulation pump (6) through a flange. The bottom ends of the temperature control tubes (2) on both sides are connected with a butt joint (8), and a valve body (9) is provided through the butt joint (8).

2. The biological fermentation tank temperature control device according to claim 1, characterized in that: The invention also includes a stirring mechanism arranged in the tank body (1), the stirring mechanism includes a cover plate (15) installed on the inner wall of the tank body (1), a driving rod (18) is rotatably installed on one side of the bottom end of the cover plate (15), a second rack (17) is hingedly connected to the bottom end of the driving rod (18), a second gear (19) is meshedly connected to one side of the second rack (17), a connecting shaft is installed at the bottom end of the second gear (19), and a limit block (16) is installed on the outer wall of the top end of the connecting shaft to prevent the second rack (17) from falling off. The bottom end of the connecting shaft is fixedly sleeved with a first bevel gear (21), and both sides of the bottom end of the first bevel gear (21) are meshed with second bevel gears (22), and the bottom ends of the two groups of the second bevel gears (22) are commonly meshed with a third bevel gear (23), and the bottom end of the third bevel gear (23) is installed with a stirring shaft (20), and the top end of the stirring shaft (20) and the bottom end of the first bevel gear (21) are directly rotatably installed with a connecting shaft, and one side of the two groups of the second bevel gears (22) is rotatably installed with a retaining frame (14).

3. The biological fermentation tank temperature control device according to claim 2, characterized in that: Stirring blades are fixedly mounted on opposite sides of the two groups of retainers (14) and the outer wall of the stirring shaft (20), and the stirring blades on the two groups of retainers (14) and the outer wall of the stirring shaft (20) are spaced apart from each other.

4. The biological fermentation tank temperature control device according to claim 2, characterized in that: The side wall of the cover plate (15) is fixedly connected to the inner wall of the tank body (1), and a driving motor is installed on one side of the top end of the cover plate (15). The output end of the driving motor is transmission-connected to the top end of the driving rod (18).

5. The biological fermentation tank temperature control device according to claim 2, characterized in that: Both sets of retaining frames (14) are L-shaped retaining frames, and their bottom ends are fixedly connected to the inner bottom end of the tank body (1).

6. The biological fermentation tank temperature control device according to claim 1, characterized in that: A water tank communicating with the bottom ends of the two groups of temperature control tubes (2) is provided in the middle of the valve body (9), a baffle (13) is rotatably installed in the water tank, a circular shaft is installed at the top end of the baffle (13), the top end of the circular shaft is installed through the top end of the valve body (9), and a first gear (12) is fixedly mounted thereon, a first rack (11) is meshedly mounted on one side of the first gear (12), an electric telescopic rod (10) is installed at one end of the first rack (11), and a side wall of the electric telescopic rod (10) is fixedly connected to the top end of the valve body (9).

7. The biological fermentation tank temperature control device according to claim 1, characterized in that: The invention also includes an internal temperature sensor arranged near the center of the tank body (1) and an external temperature sensor arranged near the temperature control tube (2) on the outer wall of the tank body (1). The internal temperature sensor is used to monitor the core temperature of the fermentation liquid in the tank in real time, and its measurement accuracy is ±0.1°C. The external temperature sensor is used to monitor the temperature change of the outer wall of the tank body (1), and its measurement accuracy is ±0.2°C. The internal temperature sensor and the external temperature sensor are both connected to the controller via a data line.

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