Microbial fermentation broth filtration device

Abstract

The utility model discloses a kind of microbial fermentation liquor filtering devices, including inlet pipe, the one end of inlet pipe is connected with fermentation tank outlet by pump machine, the other end of inlet pipe is connected with liquid distribution pipe, the lower end outside surface of liquid distribution pipe is evenly distributed with at least two shunt branch pipes, the shunt branch pipe is inclinedly arranged, the lower end of shunt branch pipe is connected with filter assembly, the lower end of filter assembly is communicated with confluence branch pipe, the lower end of confluence branch pipe is connected with the confluence pipe, filtered fermentation liquor is discharged, the microbial fermentation liquor filtering device is filtered by optimizing inlet mode and filter assembly design, improve filtering efficiency and maintenance convenience, greatly improve the convenience of use.

Description

Technical Field

[0001] This utility model relates to the field of microbial fermentation technology, specifically a microbial fermentation broth filtration device. Background Technology

[0002] In the process of microbial fermentation production, the fermentation broth after fermentation often contains impurities such as microbial cells, undissolved culture medium residues, and metabolic byproducts. It needs to be filtered to obtain a pure target product liquid, which provides a basis for subsequent purification and refining processes.

[0003] The current fermentation broth filtration devices have many shortcomings: On the one hand, most devices adopt a single-channel inlet and single-group filtration structure. The concentrated entry of fermentation broth into the filtration unit can easily lead to excessive local filtration load, resulting in low filtration efficiency and rapid clogging of the filter material. This requires frequent shutdowns for cleaning, which seriously affects the continuity of production. On the other hand, most filter components are integrated and fixed designs. When the filter plate becomes clogged or damaged, the entire device must be disassembled for replacement, which is cumbersome and has high maintenance costs. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a microbial fermentation broth filtration device. By optimizing the liquid inlet method and the design of the filtration components, the filtration efficiency and maintenance convenience are improved, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a microbial fermentation broth filtration device, comprising an inlet pipe, one end of which is connected to the outlet of a fermenter via a pump, and the other end of which is connected to a distribution pipe. At least two branch pipes are evenly distributed on the lower outer side of the distribution pipe, and the branch pipes are inclined. The lower end of each branch pipe is connected to a filter assembly, and the lower end of the filter assembly is connected to a manifold branch pipe. The lower end of the manifold branch pipe is connected to the manifold pipe, thereby discharging the filtered fermentation broth.

[0006] As a preferred embodiment of the present invention, the filter assembly includes a filter box, a first filter plate, a second filter plate, and a third filter plate. The first filter plate, the second filter plate, and the third filter plate are arranged parallel to each other in the filter box from top to bottom along the height direction of the filter box, and the pore size of the filter holes on the first filter plate, the second filter plate, and the third filter plate decreases sequentially.

[0007] As a preferred embodiment of this utility model, the first filter plate, the second filter plate and the third filter plate are slidably connected to the guide rail on both sides, and the guide rail is fixed inside the filter box.

[0008] In a preferred embodiment of this utility model, one end of each of the first filter plate, the second filter plate, and the third filter plate is connected to a sealing plate. The sealing plate passes through the body of the filter box, and a sealing gasket is provided between the sealing plate and the body of the filter box.

[0009] As a preferred embodiment of this utility model, a handle is provided at one end of the sealing plate.

[0010] As a preferred embodiment of this utility model, the number of the diversion branches is three, and the three diversion branches are evenly distributed on the outer side of the liquid distribution tube.

[0011] As a preferred embodiment of this utility model, an electrically controlled valve is provided on the branch pipe near the liquid distribution pipe.

[0012] As a preferred technical solution of this utility model, it also includes a support assembly, which includes a support plate, a V-shaped connecting frame, a fixing rod, an L-shaped connecting rod, and a support leg; The support plate is located below the filter assembly. The manifold passes through the support plate. The two ends of the V-shaped connecting frame are respectively connected to the sides of two adjacent filter boxes. The lower end of the V-shaped connecting frame is fixedly connected to the upper surface of the support plate through a fixing rod. The upper end of the V-shaped connecting frame is fixedly connected to the outer side of the liquid separator through an L-shaped connecting rod. The lower surface of the support plate is evenly distributed with support legs.

[0013] Compared with the prior art, the beneficial effects of this utility model are: (1) The diversion filtration structure with multiple diversion branches and filter components is used to evenly distribute the fermentation liquid to each filter component, avoiding excessive load on a single filter unit. At the same time, the three-stage gradient filter plate design can gradually intercept impurities of different particle sizes, improving filtration efficiency; (2) The filter plate forms an integrated pull-out structure with the guide rail and the sealing plate. Operators can quickly disassemble and install the filter plate with the help of the handle, without the need for an overall disassembly device, shortening maintenance time. At the same time, the electric control valve on a single diversion branch can be closed to achieve individual maintenance without affecting the overall production continuity. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is the front view of the present utility model; Figure 3 This is a schematic diagram of the internal structure of the filter assembly.

[0015] In the diagram: 1. Inlet pipe, 2. Dividing pipe, 3. Dividing branch pipe, 4. Filter assembly, 41. Filter box, 42. First filter plate, 43. Second filter plate, 44. Third filter plate, 45. Guide rail, 46. Sealing plate, 47. Handle, 5. Manifold branch pipe, 6. Manifold pipe, 7. Support assembly, 71. Support plate, 72. V-shaped connecting frame, 73. Fixing rod, 74. L-shaped connecting rod, 75. Support leg, 8. Electrically controlled valve. Detailed Implementation

[0016] 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 (for ease of description and understanding, hereinafter referred to as...). Figure 2 (The above is described above). Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] Please see Figure 1-3 This utility model provides a technical solution: a microbial fermentation broth filtration device, including an inlet pipe 1, one end of which is connected to the outlet of the fermentation tank via a pump, and the other end of which is connected to a distribution pipe 2. The inlet pipe 1 is supported by 304 stainless steel, and the pump is a sanitary centrifugal pump, which can provide stable power for the fermentation broth transportation. The inlet pipe 1 and the distribution pipe 2 are connected by welding to realize the initial transportation of the fermentation broth. At least two branch pipes 3 are evenly distributed on the lower outer side of the dividing pipe 2. In this embodiment, there are three branch pipes 3. The branch pipes 3 are inclined to facilitate the flow of fermentation liquid. The lower end of the branch pipe 3 is connected to the filter assembly 4. The lower end of the filter assembly 4 is connected to the manifold 5. The lower end of the manifold 5 is connected to the manifold 6. After the fermentation liquid is filtered by the filter assembly 4, it is collected in the manifold 6 and the filtered fermentation liquid is discharged.

[0018] Specifically, the filter assembly 4 includes a filter box 41, a first filter plate 42, a second filter plate 43, and a third filter plate 44. The first filter plate 42, the second filter plate 43, and the third filter plate 44 are arranged parallel to each other from top to bottom in the filter box 41 along the height direction of the filter box 41. The pore size of the filter holes on the first filter plate 42, the second filter plate 43, and the third filter plate 44 decreases sequentially. In this embodiment, the pore size of the first filter plate 42 is 100-120 mesh, corresponding to a particle size of 120-150 μm, which is used to trap large impurities in the fermentation broth, such as residues and aggregated bacterial cells. The pore size of the second filter plate 43 is 200-250 mesh, corresponding to a particle size of 63-75 μm, which is used to trap medium-sized bacterial cell fragments. The pore size of the third filter plate 44 is 300-350 mesh, corresponding to a particle size of 45-53 μm, which is used to trap small bacterial cells and colloidal impurities. The fermentation broth is efficiently purified through three-stage gradient filtration.

[0019] Specifically, the first filter plate 42, the second filter plate 43, and the third filter plate 44 are all slidably connected to the grooves of the guide rail 45 on both sides. The guide rail 45 is fixed inside the filter box 41. Operators can install and remove the filter plates by pulling them out without the need for special tools, which greatly improves maintenance efficiency.

[0020] Furthermore, one end of the first filter plate 42, the second filter plate 43, and the third filter plate 44 are all connected to the sealing plate 46. The sealing plate 46 passes through the elongated hole opened on the body of the filter box 41. The size of the elongated hole section on the sealing plate 46 that passes through the body of the filter box 41 matches the size of the elongated hole, and a sealing ring is wrapped around the outer side of the passing section to achieve a seal. A sealing gasket is provided between the sealing plate 46 and the body of the filter box 41 to achieve a secondary seal, thereby preventing the fermentation liquid from leaking from the opening.

[0021] Furthermore, a handle 47 is provided at one end of the sealing plate 46. The handle 47 has a U-shaped structure, which makes it convenient for operators to grip and pull it out.

[0022] Furthermore, an electrically controlled valve 8 is installed on the branch pipe 3 near the liquid distribution pipe. The electrically controlled valve 8 is connected to an external control system. When the filter plate needs to be cleaned, the electrically controlled valve 8 on the corresponding branch pipe 3 can be closed to achieve individual maintenance without affecting the continuity of production.

[0023] To ensure the stability of the entire filtration device, a support assembly 7 is also included. The support assembly 7 includes a support plate 71, a V-shaped connecting frame 72, a fixing rod 73, an L-shaped connecting rod 74, and a support leg 75. The support plate 71 is set below the filter assembly 4, the manifold 5 passes through the support plate 71, and the two ends of the V-shaped connecting bracket 72 are respectively connected to the sides of the two adjacent filter boxes 41 to achieve lateral fixation between the filter assemblies 4 and prevent the filter assembly 4 from shifting during operation. The lower end of the V-shaped connecting bracket 72 is fixedly connected to the upper surface of the support plate 71 via the fixing rod 73, so as to transfer the weight of the filter assembly 4 to the support plate 71. The upper end of the V-shaped connecting bracket 72 is fixedly connected to the outer side of the liquid separator 2 via the L-shaped connecting rod 74 to prevent the liquid separator 2 from tilting due to its own weight or vibration. Support legs 75 are evenly distributed on the lower surface of the support plate 71.

[0024] In use: Start the pump. The fermentation liquid to be filtered in the fermenter is pumped to the inlet pipe 1 and then into the distributor pipe 2. The distributor pipe 2 evenly distributes the fermentation liquid into three branch pipes 3 distributed at 120°. Under the inclined guidance of the branch pipes 3, the fermentation liquid flows smoothly into the filter box 41 of each filter assembly 4. After entering the filter box 41, the fermentation liquid first flows through the first filter plate 42 to intercept large particles and agglomerated bacteria. Then, the fermentation liquid flows down through the second filter plate 43 to intercept medium-sized bacterial fragments. Finally, it flows through the third filter plate 44 to intercept small bacteria and colloidal impurities, completing three-stage precision filtration to obtain pure fermentation liquid. The filtered liquid flows from the outlet at the bottom of the filter box 41 into the manifold branch pipe 5. Each manifold branch pipe 5 collects and transports the liquid to the manifold pipe 6, which finally transports it to the liquid storage tank or subsequent purification equipment.

[0025] If a significant decrease in filtration flow rate is observed after the device has been running for a period of time, the electrically controlled valve 8 on the branch pipe 3 of the corresponding filter component 4 can be closed. The filter plate can be pulled out along the guide rail 45 using the handle 47 to clean the impurities on the surface of the filter plate or replace it with a new filter plate. After cleaning, the filter plate can be pushed back to its original position and the electrically controlled valve 8 can be reopened to restore filtration. The entire maintenance process does not require machine shutdown and does not affect the normal operation of other filter components.

[0026] The parts of the utility model not described in detail are prior art. Although embodiments of the utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the utility model. The scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A microbial fermentation broth filtration device, comprising an inlet pipe (1), one end of which is connected to the outlet of a fermenter via a pump, characterized in that: The other end of the inlet pipe (1) is connected to the distribution pipe (2). At least two branch pipes (3) are evenly distributed on the lower outer side of the distribution pipe (2). The branch pipes (3) are inclined. The lower end of the branch pipes (3) is connected to the filter assembly (4). The lower end of the filter assembly (4) is connected to the confluence branch pipe (5). The lower end of the confluence branch pipe (5) is connected to the confluence pipe (6) to discharge the filtered fermentation liquid.

2. The microbial fermentation broth filtration device according to claim 1, characterized in that: The filter assembly (4) includes a filter box (41), a first filter plate (42), a second filter plate (43), and a third filter plate (44). The first filter plate (42), the second filter plate (43), and the third filter plate (44) are arranged parallel to each other from top to bottom in the filter box (41) along the height direction of the filter box (41). The pore size of the filter holes on the first filter plate (42), the second filter plate (43), and the third filter plate (44) decreases sequentially.

3. The microbial fermentation broth filtration device according to claim 2, characterized in that: The first filter plate (42), the second filter plate (43) and the third filter plate (44) are slidably connected to the guide rail (45) on both sides, and the guide rail (45) is fixed inside the filter box (41).

4. The microbial fermentation broth filtration device according to claim 2, characterized in that: One end of the first filter plate (42), the second filter plate (43) and the third filter plate (44) are all connected to the sealing plate (46). The sealing plate (46) passes through the body of the filter box (41), and a sealing gasket is provided between the sealing plate (46) and the body of the filter box (41).

5. A microbial fermentation broth filtration device according to claim 4, characterized in that: A handle (47) is provided at one end of the sealing plate (46).

6. The microbial fermentation broth filtration device according to claim 1, characterized in that: The number of the diversion branch pipes (3) is three, and the three diversion branch pipes (3) are evenly distributed on the outer side of the liquid distribution pipe (2).

7. A microbial fermentation broth filtration device according to claim 6, characterized in that: An electrically controlled valve (8) is installed on the branch pipe (3) near the liquid distribution pipe.

8. A microbial fermentation broth filtration device according to claim 2, characterized in that: It also includes a support assembly (7), which includes a support plate (71), a V-shaped connecting frame (72), a fixing rod (73), an L-shaped connecting rod (74), and a support leg (75); The support plate (71) is located below the filter assembly (4), the manifold (5) passes through the support plate (71), the two ends of the V-shaped connecting frame (72) are respectively connected to the sides of two adjacent filter boxes (41), the lower end of the V-shaped connecting frame (72) is fixedly connected to the upper surface of the support plate (71) through the fixing rod (73), the upper end of the V-shaped connecting frame (72) is fixedly connected to the outer side of the liquid separator (2) through the L-shaped connecting rod (74), and the lower surface of the support plate (71) is evenly distributed with support legs (75).

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