A temperature control device for a fermentation tank for preparing nisin

Abstract

This utility model discloses a temperature control device for a fermenter used in the preparation of nisin. The device includes a fermenter covered by an insulated tank, with a cavity between the fermenter and the insulated tank filled with a temperature-controlled liquid. An impeller assembly is mounted on the upper part of the cavity and rotates outside the fermenter. A spiral cleaning plate is fixed to the side of the impeller assembly. This temperature control device regulates the temperature inside the fermenter by controlling the circulation of the temperature-controlled liquid outside the fermenter for heat exchange, facilitating the growth of *Streptococcus lactis*. During the circulation of the temperature-controlled liquid, the cleaning plate rotates outside the fermenter to clean scale, mucus, and other deposits, ensuring efficient heat exchange between the fermenter and the temperature-controlled liquid. The device also filters foreign matter from the temperature-controlled liquid, facilitating its reuse.

Description

Technical Field

[0001] This utility model relates to the technical field of preservative preparation equipment, specifically a temperature control device for a fermenter used in the preparation of nisin. Background Technology

[0002] Nisin is a polypeptide antibiotic secreted by *Streptococcus lactis*, belonging to the category of preservatives and commonly used as a food additive. Strict temperature control is crucial during nisin preparation. The optimal growth temperature for *Streptococcus lactis* is around 30℃. Temperatures that are too high or too low will affect the growth and metabolic activities of *Streptococcus lactis*, thus impacting the yield and quality of nisin. Therefore, precise temperature control is key to ensuring successful fermentation. Water bath temperature control, as one method of temperature regulation in fermenters, is simple in structure and low in cost. However, the recirculation of the temperature control solution can easily lead to scale and film buildup on the outside of the fermenter, affecting heat exchange efficiency and causing shortcomings in the temperature control device. Utility Model Content

[0003] The technical problem this invention aims to solve is to overcome existing defects and provide a temperature control device for a fermenter used in the preparation of nisin. This device regulates the temperature inside the fermenter by controlling the circulation of a temperature-controlled liquid outside the fermenter for heat exchange, facilitating the growth of lactic acid streptococci within the fermenter. During the circulation of the temperature-controlled liquid, a cleaning plate can be driven to rotate outside the fermenter to clean scale, mucus, and other deposits generated on the fermenter, ensuring efficient heat exchange between the fermenter and the temperature-controlled liquid. Simultaneously, this device can also filter foreign matter in the temperature-controlled liquid, facilitating its recycling and effectively solving the problems in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a temperature control device for a fermenter used in the preparation of nisin, comprising a fermenter, an insulated tank covering the outside of the fermenter, and a cavity reserved between the insulated tank and the fermenter, the cavity being filled with a temperature control liquid, an impeller assembly being provided at the upper part of the cavity, the impeller assembly being rotatably disposed on the outside of the fermenter, and a spiral cleaning plate being fixed to the side of the impeller assembly, the cleaning plate being in contact with the outside of the fermenter.

[0005] The insulation tank is equipped with a temperature control box on its exterior, and a water pump set is installed on the side of the temperature control box. The water pump set's pumping end is connected to the inner cavity of the temperature control box, and an inlet pipe is provided at the water outlet of the water pump set. The end of the inlet pipe away from the temperature control box is fixed to the side of the insulation tank and connected to the cavity, and the outlet of the inlet pipe is set towards the impeller assembly. A drain pipe connected to the bottom of the cavity is installed at the bottom of the insulation tank.

[0006] As a preferred embodiment of this utility model, a heating module and a cooling module are installed on the side of the temperature control box, and the heating end of the heating module and the cooling end of the cooling module are both located inside the temperature control box.

[0007] As a preferred technical solution of this utility model, a filter box is provided on the outside of the heat preservation tank. The end of the drain pipe away from the heat preservation tank is fixed to the side of the filter box and communicates with the inner cavity of the filter box. A return pipe communicating with the inner cavity of the filter box is installed on the side of the filter box away from the drain pipe. The end of the return pipe away from the filter box is fixed to the side of the temperature control box and communicates with the inner cavity of the temperature control box. Several replaceable plate filter groups are installed inside the filter box.

[0008] As a preferred embodiment of this utility model, a first temperature sensor and a second temperature sensor are installed on the side of the heat preservation tank. The detection end of the first temperature sensor is located inside the fermentation tank, and the detection end of the second temperature sensor is located inside the cavity.

[0009] As a preferred embodiment of this utility model, a feed pipe is installed on the upper side of the heat preservation tank and is connected to the inner cavity of the fermentation tank; a discharge pipe is installed at the bottom of the heat preservation tank and is connected to the inner cavity of the fermentation tank; and a valve is installed on the discharge pipe.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. The temperature control device of the fermenter for preparing nisin according to this utility model regulates the temperature inside the fermenter by driving the temperature control liquid to circulate in the cavity. When the temperature inside the fermenter is low, the temperature of the temperature control liquid is increased to heat the fermenter; when the temperature inside the fermenter is high, the temperature of the temperature control liquid is decreased to cool the fermenter. By adjusting the temperature of the temperature control liquid, the temperature inside the fermenter is kept constant and meets the growth requirements of nisin, thus facilitating the preparation of nisin.

[0012] 2. The temperature control device of the fermenter for preparing nisin according to this utility model drives the impeller assembly to rotate. During the rotation of the impeller assembly, the cleaning plate rotates. The cleaning plate cleans the scale, mucus, etc. generated on the outside of the fermenter, ensuring the heat exchange efficiency between the fermenter and the temperature control liquid. The cleaning plate adopts a spiral structure and is wrapped around the outside of the fermenter, which improves the structural strength and stability during use. In addition to cleaning, the cleaning plate can also be used to stir the temperature control liquid in the cavity, promoting the uniformity of the temperature of the heat preservation liquid in various parts of the cavity.

[0013] 3. The temperature control device of the fermenter for preparing nisin according to this utility model has a temperature control liquid flowing out of the cavity through the drain pipe and entering the filter box. The circulating temperature control liquid will carry the foreign matter cleaned by the cleaning plate out through the drain pipe at the bottom of the cavity. The foreign matter in the temperature control liquid is filtered by the filter box and the plate filter group installed in the filter box, which facilitates the recycling of the temperature control liquid.

[0014] 4. The temperature control device of the fermenter for preparing nisin according to the present invention includes a first temperature sensor for detecting the temperature inside the fermenter and a second temperature sensor for detecting the temperature inside the cavity. By detecting the temperature inside the fermenter, the temperature of the temperature control liquid can be adjusted according to the requirements so that the temperature inside the fermenter meets the requirements. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0017] Figure 3 This is a cross-sectional view of the thermal insulation tank of this utility model;

[0018] Figure 4 for Figure 3 A frontal view of the structure.

[0019] In the diagram: 1. Insulation tank, 2. Fermentation tank, 3. Impeller assembly, 4. Cleaning plate, 5. Temperature control box, 6. Heating module, 7. Cooling module, 8. Water pump assembly, 9. Inlet pipe, 10. Filter box, 11. Plate filter assembly, 12. Drain pipe, 13. Return pipe, 14. Feed pipe, 15. First temperature sensor, 16. Second temperature sensor, 17. Discharge pipe, 18. Valve. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4This utility model provides a technical solution: a temperature control device for a fermenter used in the preparation of nisin, comprising a fermenter 2, an insulated tank 1 covering the outside of the fermenter 2, and a cavity reserved between the insulated tank 1 and the fermenter 2, the cavity being filled with a temperature-controlling liquid, preferably water. The fermenter 2 is made of a thermally conductive material, while the insulated tank 1 is made of an insulating material. The temperature inside the fermenter 2 is regulated by driving the temperature-controlling liquid to circulate within the cavity. When the temperature inside the fermenter 2 is low, the temperature of the temperature-controlling liquid is increased to heat the fermenter 2; when the temperature inside the fermenter 2 is high, the temperature of the temperature-controlling liquid is decreased to cool the fermenter 2. By adjusting the temperature of the temperature-controlling liquid, the temperature inside the fermenter 2 is kept constant and meets the growth requirements of nisin, facilitating the preparation of nisin.

[0022] An impeller assembly 3 is installed at the upper part of the cavity, and the impeller assembly 3 is rotatably positioned on the outside of the fermentation tank 2. A spiral cleaning plate 4 is fixed to the side of the impeller assembly 3, and the cleaning plate 4 contacts the outside of the fermentation tank 2, driving the impeller assembly 3 to rotate. During the rotation of the impeller assembly 3, the cleaning plate 4 is driven to rotate, and the cleaning plate 4 cleans the scale, film and other substances generated on the outside of the fermentation tank 2, ensuring the heat exchange efficiency between the fermentation tank 2 and the temperature control liquid. The cleaning plate 4 adopts a spiral structure and is wrapped around the outside of the fermentation tank 2, which improves the structural strength and stability during use. In addition to its cleaning function, the cleaning plate 4 can also be used to stir the temperature control liquid in the cavity, promoting the uniformity of the temperature of the heat preservation liquid in various parts of the cavity.

[0023] A temperature control box 5 is installed outside the insulation tank 1, and a water pump set 8 is installed on the side of the temperature control box 5. The water pump set 8's suction end is connected to the inner cavity of the temperature control box 5, and an inlet pipe 9 is installed at the water outlet end of the water pump set 8. The end of the inlet pipe 9 away from the temperature control box 5 is fixed to the side of the insulation tank 1 and connected to the cavity, and the outlet of the inlet pipe 9 is set towards the impeller assembly 3. A drain pipe 12 connected to the bottom of the cavity is installed at the bottom of the insulation tank 1. The water pump set 8 is used to drive the temperature control liquid to circulate in the cavity and inside the temperature control box 5. After the temperature control liquid flows into the temperature control box 5, it is then... The temperature control box 5 adjusts its temperature, raising or lowering it. The temperature-controlled liquid, after temperature adjustment, is driven by the water pump group 8 and transported through the inlet pipe 9 to the cavity between the heat preservation tank 1 and the fermentation tank 2, so that the temperature control liquid can regulate the temperature inside the fermentation tank 2. After the temperature control liquid exchanges heat with the fermentation tank 2, it flows out through the drain pipe 12, so that the temperature control liquid can circulate in the cavity. When the temperature control liquid is discharged into the cavity through the inlet pipe 9, the outflowing water applies a thrust to the blades in the impeller group 3, so that the impeller group 3 can rotate in the cavity to use the cleaning plate 4.

[0024] A heating module 6 and a cooling module 7 are installed on the side of the temperature control box 5. The heating end of the heating module 6 and the cooling end of the cooling module 7 are both located inside the temperature control box 5. The heating module 6 is preferably an electric heating plate, which is used to heat the temperature control liquid inside the temperature control box 5. The cooling module 7 is preferably a semiconductor cooling chip, which is used to cool the temperature control liquid inside the temperature control box 5. The heating module 6 or the cooling module 7 can be used as needed. It should be noted that the heat dissipation surface of the cooling module 7 is located on the outside of the temperature control box 5, and heat dissipation fins are provided on the heat dissipation surface to assist the cooling module 7 in dissipating heat.

[0025] A filter box 10 is installed on the outside of the heat preservation tank 1. The end of the drain pipe 12 away from the heat preservation tank 1 is fixed to the side of the filter box 10 and communicates with the inner cavity of the filter box 10. A return pipe 13 communicating with the inner cavity of the filter box 10 is installed on the side away from the drain pipe 12. The end of the return pipe 13 away from the filter box 10 is fixed to the side of the temperature control box 5 and communicates with the inner cavity of the temperature control box 5. Several replaceable plate filter groups 11 are installed in the filter box 10. The temperature control liquid flows out from the cavity through the drain pipe 12 and enters the filter box 10. The circulating temperature control liquid will drive the foreign objects cleaned by the cleaning plate 4 to be discharged through the drain pipe 12 at the bottom of the cavity. The foreign objects in the temperature control liquid are filtered by the filter box 10 and the plate filter groups 11 installed in the filter box 10, which facilitates the recycling of the temperature control liquid.

[0026] A first temperature sensor 15 and a second temperature sensor 16 are installed on the side of the insulated tank 1. The detection end of the first temperature sensor 15 is located inside the fermentation tank 2, and the detection end of the second temperature sensor 16 is located inside the cavity. The first temperature sensor 15 is used to detect the temperature inside the fermentation tank 2, and the second temperature sensor 16 is used to detect the temperature inside the cavity. By detecting the temperature inside the fermentation tank 2, it is convenient to adjust the temperature of the temperature control liquid according to the requirements, so that the temperature inside the fermentation tank 2 meets the requirements.

[0027] A feed pipe 14 is installed on the upper side of the heat preservation tank 1, and the feed pipe 14 is connected to the inner cavity of the fermentation tank 2. The feed pipe 14 is used to replenish the lactic acid streptococcus solution in the heat preservation tank 1. A discharge pipe 17 is installed at the bottom of the heat preservation tank 1, and the discharge pipe 17 is connected to the inner cavity of the fermentation tank 2. A valve 18 is installed on the discharge pipe 17. By opening the valve 18, the cultured lactic acid streptococcus solution can be discharged from the fermentation tank 2, which facilitates the preparation of lactic acid streptococcus.

[0028] The heating module 6, cooling module 7, water pump group 8, first temperature sensor 15, and second temperature sensor 16 used in this utility model are all commonly used electronic components in the prior art. Their working methods and circuit structures are all known technologies. The operation of the electronic components in this utility model is controlled by setting a switch group or PLC controller outside the heat preservation tank 1. This method is a common technical means used by technicians and will not be described in detail here.

[0029] The temperature control device for this fermenter used in the preparation of nisin regulates the temperature inside the fermenter by controlling the circulation of a temperature-controlled liquid outside the fermenter for heat exchange, thus facilitating the growth of lactic acid streptococci inside the fermenter. During the circulation of the temperature-controlled liquid, a cleaning plate can be driven to rotate outside the fermenter to clean scale, mucus, and other deposits generated on the fermenter, ensuring the heat exchange efficiency between the fermenter and the temperature-controlled liquid. At the same time, this device can also filter foreign matter in the temperature-controlled liquid, facilitating its recycling.

[0030] The parts not disclosed in this utility model are all prior art, and their specific structures, materials, and working principles will not be described in detail. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A temperature control device for a fermenter used in the preparation of nisin, comprising a fermenter (2), characterized in that: The fermentation tank (2) is covered with a heat preservation tank (1), and a cavity is reserved between the heat preservation tank (1) and the fermentation tank (2), and the cavity is filled with temperature control liquid. An impeller assembly (3) is provided on the upper part of the cavity, and the impeller assembly (3) is rotatably arranged on the outside of the fermentation tank (2). A spiral cleaning plate (4) is fixed on the side of the impeller assembly (3), and the cleaning plate (4) is in contact with the outside of the fermentation tank (2). The heat preservation tank (1) is provided with a temperature control box (5) on the outside, and a water pump group (8) is installed on the side of the temperature control box (5). The water pump group (8) is connected to the inner cavity of the temperature control box (5). The water pump group (8) is provided with an inlet pipe (9) at the outlet of the water pump group (8). The end of the inlet pipe (9) away from the temperature control box (5) is fixed to the side of the heat preservation tank (1) and connected to the cavity. The outlet of the inlet pipe (9) is set towards the impeller group (3). The bottom of the heat preservation tank (1) is provided with a drain pipe (12) connected to the bottom of the cavity.

2. The temperature control device for the fermenter used in the preparation of nisin according to claim 1, characterized in that: The temperature control box (5) is equipped with a heating module (6) and a cooling module (7) on its side. The heating end of the heating module (6) and the cooling end of the cooling module (7) are both located inside the temperature control box (5).

3. The temperature control device for the fermenter used in the preparation of nisin according to claim 1, characterized in that: The heat preservation tank (1) is provided with a filter box (10) on the outside. The end of the drain pipe (12) away from the heat preservation tank (1) is fixed to the side of the filter box (10) and communicates with the inner cavity of the filter box (10). A return pipe (13) communicating with the inner cavity of the filter box (10) is installed on the side away from the drain pipe (12). The end of the return pipe (13) away from the filter box (10) is fixed to the side of the temperature control box (5) and communicates with the inner cavity of the temperature control box (5). Several replaceable plate filter groups (11) are installed inside the filter box (10).

4. The temperature control device for the fermenter used in the preparation of nisin according to claim 1, characterized in that: The heat preservation tank (1) is equipped with a first temperature sensor (15) and a second temperature sensor (16) on its side. The detection end of the first temperature sensor (15) is located inside the fermentation tank (2), and the detection end of the second temperature sensor (16) is located inside the cavity.

5. The temperature control device for the fermenter used in the preparation of nisin according to claim 1, characterized in that: The heat preservation tank (1) is equipped with a feed pipe (14) on the upper side, and the feed pipe (14) is connected to the inner cavity of the fermentation tank (2). The heat preservation tank (1) is equipped with a discharge pipe (17) at the bottom, and the discharge pipe (17) is connected to the inner cavity of the fermentation tank (2). A valve (18) is installed on the discharge pipe (17).

Images