A fermentation broth slugging filtration system

Abstract

The utility model provides a kind of fermentation liquid medium material filtering system, including batching mechanism, with batching mechanism connection material filtering mechanism, with material filtering mechanism connection secondary filtering mechanism and bypass discharge mechanism, batching mechanism is used to mix solid component and liquid component, secondary filtering mechanism and bypass discharge mechanism are connected with sterilization mechanism respectively.Batching mechanism includes batching tank, feed inlet being opened on batching tank, with batching tank connection stirring motor, with stirring motor connection stirring assembly, batching tank is connected with material filtering mechanism.The fermentation liquid medium material filtering system provided by the utility model can filter the particles and other objects in the liquid medium during the process of materializing the liquid medium, thereby avoiding contamination of the liquid medium during fermentation, and helping to reduce the work of cleaning the tank for staff, improving the practicability.

Description

Technical Field

[0001] This utility model belongs to the field of bio-fermentation technology, specifically relating to a fermentation liquid culture medium feeding and filtration system. Background Technology

[0002] Most industrial fermentation uses liquid fermentation, and the liquid culture medium is composed of various packaged solid and liquid raw materials and auxiliary materials. After mixing, the solid and liquid raw materials and auxiliary materials need to be sterilized before fermentation. For the liquid component, such as corn steep liquor, there are usually many water-insoluble particulate impurities. If these impurities are not removed in time before sterilization, the heat of the high-temperature steam will not be able to effectively penetrate the interior of the particles during the high-temperature steam sterilization process. As a result, the microorganisms (such as bacterial spores and mold spores) encapsulated inside the particles will avoid the "high temperature + duration" conditions required for sterilization, making the liquid culture medium susceptible to contamination during fermentation.

[0003] Solid components are mostly packaged in woven bags. During the process of opening these bags and adding materials to the mixing tank, it's difficult to avoid debris such as bag ends entering the tank. If this debris isn't removed promptly, it can clog the dispensing pipes during the feeding process. Even if the debris doesn't clog the pipes, when the liquid culture medium enters the fermenter, it can become entangled in the coil fixing clips (small structural components used to secure the heat exchange coils inside the fermenter) due to agitation. Subsequent tank cleaning requires manual removal of the debris from each clip, increasing the workload and time required for cleaning the fermenter. Therefore, a system capable of filtering particulate matter and other contaminants from the liquid culture medium is needed. This invention addresses this technical problem. Utility Model Content

[0004] This invention provides a fermentation liquid culture medium feeding and filtration system that can filter out particulate matter and other objects during the feeding process of the liquid culture medium, thereby preventing the liquid culture medium from becoming contaminated with bacteria during fermentation, reducing the cleaning work of staff, and improving its practicality.

[0005] A fermentation liquid culture medium feeding and filtration system includes a feeding mechanism, a feeding and filtration mechanism connected to the feeding mechanism, a secondary filtration mechanism connected to the feeding and filtration mechanism, and a bypass discharge mechanism. The feeding mechanism is used to mix solid components and liquid components. The secondary filtration mechanism and the bypass discharge mechanism are respectively connected to a sterilization mechanism.

[0006] Furthermore, the batching mechanism includes a batching tank, a feed inlet on the batching tank, a stirring motor connected to the batching tank, and a stirring assembly connected to the stirring motor. The batching tank is connected to the feeding and filtering mechanism.

[0007] Furthermore, the feeding and filtering mechanism includes a feeding pipeline connected to the feeding tank, a discharge valve connected to the feeding pipeline, a filter connected to the discharge valve, a pre-pump valve connected to the filter, a feeding pump connected to the pre-pump valve, and a post-pump valve connected to the feeding pump. The secondary filtering mechanism and the bypass discharge mechanism are respectively connected to the feeding pipeline.

[0008] Furthermore, the secondary filtration mechanism includes a feed pipe connected to the feeding pipeline, a second filter connected to the feed pipe, a drain pipe and a discharge pipe connected to the second filter, and a cleaning motor connected to the second filter. The drain pipe is connected to a drain valve, and the discharge pipe is connected to the sterilization mechanism.

[0009] Furthermore, the bypass discharge mechanism includes a second discharge pipe connected to the feeding pipeline and a bypass valve connected to the second discharge pipe, and the second discharge pipe is connected to the sterilization mechanism.

[0010] Furthermore, the feed pipe is connected to the feed valve, and the discharge pipe one is connected to the discharge valve two.

[0011] Furthermore, the stirring assembly includes a main shaft connected to the motor at one end, a connecting rod connected to the main shaft at one end, a scraper connected to the other end of the connecting rod, and a side plate connected to the side of the connecting rod. The side of the scraper abuts against the side wall of the mixing tank, and the other end of the main shaft is rotatably connected to the inner bottom of the mixing tank.

[0012] Furthermore, the inner wall of the mixing tank is connected to the side of the filter plate, and the filter plate is provided with a connecting hole, in which the main shaft is rotatably connected.

[0013] The technical effects of this utility model are as follows:

[0014] (1) The feeding and filtering mechanism in this scheme can extract the liquid culture medium from the mixing tank and filter it. Then, the liquid culture medium is filtered again through the secondary filtration mechanism and transported to the sterilization mechanism for subsequent sterilization. Thus, the liquid culture medium is filtered through multiple filtration processes, and the particulate matter and woven bag thread ends are filtered out.

[0015] (2) When the second filter needs to be shut down for maintenance, in order to avoid affecting the work progress, the liquid culture medium can be introduced into the sterilization mechanism through the bypass discharge mechanism, which can be used as an emergency measure to ensure the normal operation of the feeding work;

[0016] (3) The scraper in this solution can scrape off the solid and liquid components attached to the inner wall of the mixing tank, preventing them from adhering to the inner wall of the mixing tank for a long time, thereby avoiding affecting the subsequent cleaning work of the mixing tank and reducing the workload of the staff.

[0017] (4) One end of the feeding pipeline in this scheme is located between the filter plate and the bottom of the mixing tank. The filter plate can perform preliminary filtration of impurities in the liquid culture medium to prevent more impurities from entering the feeding pipeline, thereby avoiding blockage of the feeding pipeline. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model.

[0019] Figure 2 This is a schematic diagram of the stirring assembly in Embodiment 2 of this utility model.

[0020] The attached diagram is labeled as follows: 1. Batching tank; 2. Stirring motor; 3. Discharge valve one; 4. Filter one; 5. Pump inlet valve; 6. Feeding pump; 7. Pump outlet valve; 8. Bypass valve; 9. Feed valve; 10. Filter two; 11. Discharge valve two; 12. Sterilization mechanism; 13. Drain valve; 14. Drain pipe; 15. Cleaning motor; 16. Main shaft; 17. Side plate; 18. Scraper; 19. Connecting rod; 20. Filter plate; 21. Feeding pipeline. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments and accompanying drawings.

[0022] Example 1

[0023] See Figure 1 A fermentation liquid culture medium feeding and filtration system includes a batching mechanism, a feeding and filtration mechanism connected to the batching mechanism, a secondary filtration mechanism connected to the feeding and filtration mechanism, and a bypass discharge mechanism. The batching mechanism is used to mix solid components and liquid components. The secondary filtration mechanism and the bypass discharge mechanism are respectively connected to a sterilization mechanism 12. In this embodiment, the sterilization mechanism 12 is a medium-to-fermentation tank sterilization pipeline, that is, a conveying pipeline system used to transport liquid culture medium to the fermenter and can cooperate with tank sterilization. This is prior art and will not be described in detail here.

[0024] Furthermore, the batching mechanism includes a batching tank 1, a feed inlet on the batching tank 1, a stirring motor 2 connected to the batching tank 1, and a stirring assembly connected to the stirring motor 2. The batching tank 1 is connected to a feeding and filtering mechanism. The stirring assembly in this embodiment is prior art and is common knowledge known to those skilled in the art; its specific structure will not be described in detail here.

[0025] Furthermore, the feeding and filtering mechanism includes a feeding pipe 21 connected to the feeding tank 1, a discharge valve 3 connected to the feeding pipe 21, a filter 4 connected to the discharge valve 3, a pre-pump valve 5 connected to the filter 4, a feeding pump 6 connected to the pre-pump valve 5, and a post-pump valve 7 connected to the feeding pump 6. The secondary filtering mechanism and the bypass discharge mechanism are respectively connected to the feeding pipe 21. In this embodiment, the filter 4 is a Y-type filter.

[0026] Furthermore, the secondary filtration mechanism includes an inlet pipe connected to the feeding pipe 21, a second filter 10 connected to the inlet pipe, a drain pipe 14 and a discharge pipe 1 connected to the second filter 10, and a cleaning motor 15 connected to the second filter 10. The drain pipe 14 is connected to the drain valve 13, and the discharge pipe 1 is connected to the sterilization mechanism 12. In this embodiment, the second filter 10 is a fully automatic self-cleaning filter. The cleaning motor 15 is connected to the cleaning assembly. The fully automatic self-cleaning filter is prior art known to those skilled in the art and will not be described in detail here.

[0027] Furthermore, the bypass discharge mechanism includes a discharge pipe II connected to the feeding pipe 21 and a bypass valve 8 connected to the discharge pipe II. The discharge pipe II is connected to the sterilization mechanism 12.

[0028] Furthermore, the feed pipe is connected to the feed valve 9, and the discharge pipe 1 is connected to the discharge valve 2 11.

[0029] The working process of this embodiment is as follows:

[0030] First, add an appropriate amount of tap water to the mixing tank 1 and heat the water to 50-60℃. Then, turn on the stirring motor 2 and add the solid and liquid raw materials and auxiliary materials through the feed inlet. Under the action of the stirring components, the materials will dissolve into a liquid state. Then, close the bypass valve 8 and open the feed valve 9 and the discharge valve to prevent the liquid culture medium from entering the bypass discharge mechanism.

[0031] Turn on the feeding pump 6, and open the discharge valve 3 and the inlet valve 5. After the pressure of the feeding pump 6 stabilizes, slowly open the outlet valve 7. The liquid culture medium in the mixing tank 1 will be initially filtered by the filter 4 and then filtered again by the filter 10, and finally enter the sterilization mechanism 12.

[0032] As the feeding process continues, when the liquid level in the mixing tank 1 is low, the stirring motor 2 is turned off.

[0033] When filter 2 10 is shut down for maintenance, the feed valve 9 and discharge valve 2 11 are closed, and the bypass valve 8 is opened. Liquid culture medium enters the sterilization mechanism 12 via the bypass to avoid affecting the work progress. After the timed period of the fully automatic self-cleaning filter is completed, or during the filtration process, the internal differential pressure switch detects a continuous differential pressure signal and automatically enters the cleaning mode after the set differential pressure delay time. During the cleaning process, the cleaning motor 15 starts, automatically opens the drain valve 13 to enter the cleaning time, and the filtered particles and other impurities are discharged through the drain pipe 14. When the cleaning time is reached, the cleaning mode is automatically exited, the drain valve 13 is closed, and the filter enters the filtration mode.

[0034] After all the liquid culture medium has been pumped into the sterilization tank of the sterilization mechanism 12, the feeding pump 6 and all control valves are turned off to complete the feeding process.

[0035] Example 2

[0036] To better clean the liquid culture medium adhering to the inner wall of the mixing tank 1 and to achieve better filtration, this solution provides another embodiment based on Example 1, the details of which are as follows:

[0037] See Figure 2 The stirring assembly includes a main shaft 16 connected to a motor at one end, a connecting rod 19 connected to the main shaft 16 at one end, a scraper 18 connected to the other end of the connecting rod 19, and a side plate 17 connected to the side of the connecting rod 19. The side of the scraper 18 abuts against the side wall of the mixing tank 1, and the other end of the main shaft 16 is rotatably connected to the inner bottom of the mixing tank 1. The side plate 17 is used to increase the contact area with the liquid culture medium, which helps to achieve better stirring.

[0038] Furthermore, the inner wall of the mixing tank 1 is connected to the side of the filter plate 20, and the filter plate 20 is provided with a connection hole, in which the main shaft 16 is rotatably connected.

[0039] The end of the feeding pipe 21 is located between the filter plate 20 and the bottom of the mixing tank 1, so that the liquid culture medium entering the feeding pipe 21 is the filtered liquid culture medium, avoiding excessive impurities from clogging the feeding pipe 21.

[0040] The working process of this embodiment is as follows:

[0041] After the stirring motor 2 is started, the main shaft 16 connected to the stirring motor 2 will drive the scraper 18 to rotate through the connecting rod 19. This allows the scraper 18 to scrape off the liquid culture medium adhering to the inner wall of the mixing tank 1, preventing the liquid culture medium from adhering to the inner wall of the mixing tank 1 for a long time and reducing the workload of subsequent cleaning. The side plate 17 connected to the connecting rod 19 can increase the contact area with the liquid culture medium, resulting in better stirring.

[0042] After being stirred and mixed, the liquid culture medium flows through the filter plate 20 under gravity and flows below the filter plate 20, where it enters the dispensing pipe 21 under the action of the dispensing pump 6, thus achieving preliminary filtration. (This is in contrast to the example shown.) Figure 1 Different, see Figure 2 In this embodiment, the end of the feeding pipe 21 is inserted horizontally below the mixing tank 1, while the vertical portion is located outside the mixing tank 1. This prevents the feeding pipe 21 from affecting the movement of the scraper 18. In Embodiment 1, since there is no scraper 18, the vertical portion of the feeding pipe 21 is located inside the mixing tank 1. To facilitate observation of the structure of each component, Figure 2 The ingredient tank 1 is not shown in the drawing.

[0043] The technical features not described in detail in this solution are based on the conventional operation and general understanding of those skilled in the art and are derived from existing technologies, and will not be elaborated further here.

[0044] The above embodiments are only one embodiment of this application. Those skilled in the art can obtain other embodiments from the above embodiments without creative effort. Therefore, this application protects not only the above embodiments, but also the scope consistent with the principles and features of this application.

Claims

1. A fermentation liquid culture medium feeding and filtration system, characterized in that, It includes a batching mechanism, a feeding and filtering mechanism connected to the batching mechanism, a secondary filtering mechanism connected to the feeding and filtering mechanism, and a bypass discharge mechanism. The batching mechanism is used to mix solid components and liquid components. The secondary filtering mechanism and the bypass discharge mechanism are respectively connected to the sterilization mechanism (12).

2. The fermentation liquid culture medium feeding and filtration system according to claim 1, characterized in that, The batching mechanism includes a batching tank (1), a feed inlet on the batching tank (1), a stirring motor (2) connected to the batching tank (1), and a stirring assembly connected to the stirring motor (2). The batching tank (1) is connected to the feeding and filtering mechanism.

3. The fermentation liquid culture medium feeding and filtration system according to claim 2, characterized in that, The feeding and filtering mechanism includes a feeding pipeline (21) connected to the feeding tank (1), a discharge valve (3) connected to the feeding pipeline (21), a filter (4) connected to the discharge valve (3), a pump inlet valve (5) connected to the filter (4), a feeding pump (6) connected to the pump inlet valve (5), and a pump outlet valve (7) connected to the feeding pump (6). The secondary filtering mechanism and the bypass discharge mechanism are respectively connected to the feeding pipeline (21).

4. The fermentation liquid culture medium feeding and filtration system according to claim 3, characterized in that, The secondary filtration mechanism includes a feed pipe connected to the feeding pipeline (21), a second filter (10) connected to the feed pipe, a drain pipe (14) and a discharge pipe (1) connected to the second filter (10), and a cleaning motor (15) connected to the second filter (10). The drain pipe (14) is connected to the drain valve (13), and the discharge pipe (1) is connected to the sterilization mechanism (12).

5. The fermentation liquid culture medium feeding and filtration system according to claim 3, characterized in that, The bypass discharge mechanism includes a discharge pipe II connected to the feeding pipeline (21) and a bypass valve (8) connected to the discharge pipe II. The discharge pipe II is connected to the sterilization mechanism (12).

6. The fermentation liquid culture medium feeding and filtration system according to claim 4, characterized in that, The feed pipe is connected to the feed valve (9), and the discharge pipe one is connected to the discharge valve two (11).

7. The fermentation liquid culture medium feeding and filtration system according to claim 3, characterized in that, The stirring assembly includes a main shaft (16) connected to the motor at one end, a connecting rod (19) connected to the main shaft (16) at one end, a scraper (18) connected to the other end of the connecting rod (19), and a side plate (17) connected to the side of the connecting rod (19). The side of the scraper (18) abuts against the side wall of the mixing tank (1), and the other end of the main shaft (16) is rotatably connected to the inner bottom of the mixing tank (1).

8. The fermentation liquid culture medium feeding and filtration system according to claim 7, characterized in that, The inner wall of the mixing tank (1) is connected to the side of the filter plate (20), and the filter plate (20) is provided with a connecting hole, and the main shaft (16) is rotatably connected in the connecting hole.

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