Kluyveromyces lactis fermentation production tail gas sterilization device

Abstract

The utility model belongs to the technical field of yeast production, and disclose a kind of tail gas sterilization device for lactic acid kluyveromyces fermentation production, including exhaust pipe, the tail gas outlet of fermenter is fixedly connected with one end of exhaust pipe, two sterilization branch pipes are installed in the other end of exhaust pipe by three-way joint, and the inlet of two sterilization branch pipes is equipped with stop valve, the inner surface of sterilization branch pipe is equipped with filter frame, the inner surface of filter frame is equipped with three filter screens, the utility model is equipped with filter frame with independent taking and placing groove in sterilization branch pipe, under the positioning effect of annular collar, independent installation and taking and placing of three-stage filter screen are realized, so that operator can, accurately, quickly replace certain stage filter screen blocked or failed, to greatly shorten maintenance time, reduce the waste of filter material, and effectively reduce the risk of fermentation interruption caused by equipment maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of yeast production technology, specifically a tail gas sterilization device for the fermentation production of Kluyveromyces lactis. Background Technology

[0002] In the industrialization process of Kluyveromyces lactis fermentation production, gas exchange in the fermentation system is a key link to ensure the metabolic activity of the cells and maintain the homeostasis of the fermentation environment. The exhaust gas, as a continuous gas flow discharged during the fermentation process, carries microorganisms, aerosols and fine impurities from the fermentation system. If it is directly discharged or returned to the production environment, it may have a potential impact on the cleanliness of the production workshop, the surrounding ecological environment and even the purity of the strains in subsequent fermentation batches.

[0003] Existing Kluyveromyces lactis fermentation exhaust gas sterilization devices typically use a single-piece filter element or filter unit. When some of the filter elements reach the end of their service life or need cleaning, the entire filter element must be shut down, disassembled, and replaced. This process is not only cumbersome and time-consuming, leading to interruption of fermentation production, but more importantly, it cannot selectively retain other filter elements that are still in good condition, resulting in waste of filter media and increased operating costs.

[0004] Therefore, a tail gas sterilization device for the fermentation production of Kluyveromyces lactis is proposed to address the above problems. Utility Model Content

[0005] To address the problems mentioned in the background art, this utility model provides a tail gas sterilization device for the fermentation production of Kluyveromyces lactis, which has the advantages of greatly shortening maintenance time, reducing filter material waste, effectively reducing the risk of fermentation interruption due to equipment maintenance, and further improving the convenience of overall disassembly and assembly of the filter frame, thus providing great convenience for regular cleaning and maintenance.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tail gas sterilization device for the fermentation production of Kluyveromyces lactis, including an exhaust pipe, one end of which is fixedly connected to the tail gas outlet of the fermenter, and the other end of which is equipped with two sterilization branch pipes through a three-way connector, and a shut-off valve is installed at the inlet of each of the two sterilization branch pipes. The inner surface of the sterilization branch pipe is provided with a filter frame, and the inner surface of the filter frame is provided with three filter screens. The pore size of the three filter screens decreases sequentially along the airflow direction, and the materials of the three filter screens from the air inlet end to the air outlet end are stainless steel, glass fiber and polytetrafluoroethylene respectively. On the inner surface of the filter frame, there are two annular retaining rings integrally formed for each filter screen, and the filter screen is located between the two annular retaining rings.

[0007] Preferably, the top of the filter rack has a slot for picking up and putting down each filter screen, and the width of the slot matches the width of the filter screen's edge.

[0008] Preferably, a protective net is fixedly connected to one end of the filter frame, and one end of the protective net is in contact with the air outlet of the sterilization branch pipe.

[0009] Preferably, a fixing ring is fixedly connected to the inner surface of the sterilization branch tube, a sealing coating is provided at the contact point between the filter frame and the fixing ring, and two fixing components are installed on the inner surface of the fixing ring; The fixing assembly includes two mirror-distributed sleeves, both sleeves being fixedly connected to the inner surface of the sterilization branch tube. A return spring is fixedly connected to one side of the inner wall of each of the two sleeves, and a locking block is fixedly connected to one end of each of the two return springs. The two locking blocks are slidably connected to the two sleeves respectively. A locking head that works with the two locking blocks is fixedly connected to one end of the filter frame, and locking grooves are provided on both sides of the outer surface of the locking head.

[0010] Preferably, the ports of both locking blocks are hemispherical, and the locking head is spherical.

[0011] Preferably, the inner surface of the sleeve rod has two limiting grooves, and the outer surface of the locking head is fixedly connected with a limiting block that cooperates with the two limiting grooves.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, by setting a filter rack with an independent loading and unloading slot inside the sterilization branch pipe, enables independent installation and loading and unloading of the three-stage filter screen under the positioning action of the annular retaining ring. This allows operators to accurately and quickly replace a clogged or malfunctioning filter screen in one stage, thereby greatly shortening maintenance time, reducing filter material waste, and effectively reducing the risk of fermentation interruption due to equipment maintenance.

[0013] 2. This utility model connects two sterilization branch pipes equipped with shut-off valves in parallel on the exhaust pipe. Under the control of the opening and closing of the shut-off valves, when it is necessary to maintain the filter screen in one of the branch pipes, the shut-off valve of the corresponding branch pipe can be closed, and the exhaust gas sterilization and emission operation can be maintained only through the other branch pipe. This effectively avoids the problem of interruption of fermentation exhaust gas treatment when maintaining a single pipe, further reduces the risk of fermentation production interruption caused by equipment maintenance, and ensures the continuity and stability of the fermentation process.

[0014] 3. By setting a fixing component, this utility model realizes the quick locking and separation between the filter frame and the sterilization branch pipe under the elastic force of the return spring. This connection method eliminates the cumbersome steps of traditional bolt tightening, further improving the convenience of the overall assembly and disassembly of the filter frame, and providing great convenience for regular cleaning and maintenance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the fixing ring and filter frame structure of this utility model; Figure 3 This is a cross-sectional schematic diagram of one of the sleeve structures of this utility model; Figure 4 This is an exploded view of the filter frame and filter screen structure of this utility model; Figure 5 This utility model Figure 4 Enlarged schematic diagram of the structure at point A in the middle.

[0016] In the diagram: 1. Exhaust pipe; 2. Sterilization branch pipe; 3. Shut-off valve; 4. Fixing ring; 5. Fixing components; 51. Sleeve rod; 52. Locking block; 521. Locking head; 522. Locking groove; 53. Return spring; 54. Limit block; 55. Limit groove; 6. Filter rack; 61. Protective net; 62. Loading / unloading slot; 63. Filter screen; 64. Annular retaining ring. Detailed Implementation

[0017] 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.

[0018] like Figures 1 to 5 As shown, this utility model provides a tail gas sterilization device for the fermentation production of Kluyveromyces lactis, including an exhaust pipe 1. One end of the exhaust pipe 1 is fixedly connected to the tail gas outlet of the fermenter. The other end of the exhaust pipe 1 is equipped with two sterilization branch pipes 2 through a three-way connector. A shut-off valve 3 is installed at the inlet of each of the two sterilization branch pipes 2. The two sterilization branch pipes 2 and the shut-off valve 3 cooperate to realize online switching and maintenance, ensuring that the fermentation tail gas emission is uninterrupted. The inner surface of the sterilization branch pipe 2 is equipped with a filter frame 6, and the inner surface of the filter frame 6 is equipped with three filter screens 63. The pore size of the three filter screens 63 decreases sequentially along the airflow direction, and the materials of the three filter screens 63 from the air inlet end to the air outlet end are stainless steel, glass fiber, and polytetrafluoroethylene, respectively. On the inner surface of the filter frame 6, there are two annular retaining rings 64 integrally formed for each filter screen 63. The filter screen 63 is located between the two annular retaining rings 64. The gradient pore size and the different materials of the filter screens 63 form a multi-layer filtration. The stainless steel mesh intercepts large particles, the glass fiber mesh filters fine aerosols, and the polytetrafluoroethylene mesh performs high-precision sterilization, improving sterilization efficiency. The annular retaining rings 64 firmly limit the filter screen 63, preventing displacement caused by airflow impact and ensuring stable filtration effect.

[0019] Specifically, the top of the filter rack 6 is provided with a pick-and-place slot 62 above each filter screen 63. The width of the pick-and-place slot 62 matches the width of the frame of the filter screen 63. The pick-and-place slot 62 provides a convenient channel for the filter screen 63 to be disassembled and installed. The width matching design makes it easy to pick up and put down the filter screen 63. Maintenance can be completed without disassembling the filter rack 6, reducing the difficulty of operation and shortening the time spent. At the same time, it avoids frequent disassembly from damaging the sealing of the device.

[0020] like Figures 1 to 5 As shown, a protective net 61 is fixedly connected to one end of the filter frame 6. One end of the protective net 61 is in contact with the air outlet of the sterilization branch pipe 2. The protective net 61 can block accidentally detached filter screen 63 fragments or residual impurities, preventing environmental pollution or blockage of subsequent pipelines. The design of being in contact with the air outlet can also help fix the filter frame 6 and improve its installation stability.

[0021] Furthermore, a fixing ring 4 is fixedly connected to the inner surface of the sterilization branch pipe 2, and a sealing coating is provided at the contact point between the filter frame 6 and the fixing ring 4. The fixing ring 4 and the sealing coating enhance the sealing between the filter frame 6 and the sterilization branch pipe 2 to prevent exhaust gas leakage. Two fixing components 5 are installed on the inner surface of the fixing ring 4. The fixing component 5 includes two mirror-distributed sleeve rods 51. The two sleeve rods 51 are fixedly connected to the inner surface of the sterilization branch tube 2. A return spring 53 is fixedly connected to one side of the inner wall of each of the two sleeve rods 51. A locking block 52 is fixedly connected to one end of each of the two return springs 53. The two locking blocks 52 are slidably connected to the two sleeve rods 51 respectively. A locking head 521 that works with the two locking blocks 52 is fixedly connected to one end of the filter frame 6. Locking grooves 522 are opened on both sides of the outer surface of the locking head 521. The locking block 52 is driven by the return spring 53 to snap into the locking groove 522, so that the filter frame 6 can be quickly snapped and fixed without additional tools, improving the convenience of maintenance.

[0022] like Figures 1 to 5As shown, the ports of both locking blocks 52 are hemispherical, and the locking head 521 is spherical. The hemispherical locking block 52 and the spherical locking head 521 cooperate to reduce wear and allow the locking block 52 to slide smoothly into the locking groove 522, thereby improving the smoothness of filter frame 6 installation and extending the service life of the fixing component 5.

[0023] It is worth noting that two limiting grooves 55 are provided on the inner surface of the sleeve rod 51, and a limiting block 54 that works with the two limiting grooves 55 is fixedly connected to the outer surface of the locking head 521. The limiting block 54 and the limiting groove 55 work together to restrict the rotation of the locking head 521, prevent the filter frame 6 from rotating under the impact of airflow, prevent the filter screen 63 from shifting and affecting the sterilization effect, and at the same time ensure that the locking groove 522 and the locking block 52 are always aligned to avoid the failure of the locking structure.

[0024] Working principle and process: The exhaust gas from the fermenter enters the device through the exhaust pipe 1, and is split into two sterilization branch pipes 2 through the three-way connector. The shut-off valve 3 can control the opening and closing of the branch pipes to achieve switching and maintenance. After the exhaust gas enters the sterilization branch pipe 2, it first passes through the protective net 61 to initially block large impurities, and then passes through the gradient filter net 63 made of stainless steel, glass fiber and polytetrafluoroethylene to complete multi-layer sterilization. The filter frame 6 is fixed to the fixing ring 4 by the fixing component 5. During installation, the locking head 521 squeezes the locking block 52 to compress the return spring 53. After the locking groove 522 is aligned with the locking block 52, the spring returns to its original position and locks the filter frame. During maintenance, the corresponding shut-off valve 3 is closed, the filter frame 6 is pulled to disengage the locking block 52 from the locking groove 522 and the filter frame 6 is removed. Then the filter net 63 can be replaced through the pick-and-place slot 62.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the present invention 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tail gas sterilization device for the fermentation production of Kluyveromyces lactis, comprising an exhaust pipe (1), characterized in that: One end of the exhaust pipe (1) is fixedly connected to the tail gas outlet of the fermenter, and the other end of the exhaust pipe (1) is equipped with two sterilization branch pipes (2) through a three-way connector, and a shut-off valve (3) is installed at the inlet of each of the two sterilization branch pipes (2). The inner surface of the sterilization branch pipe (2) is provided with a filter frame (6), and the inner surface of the filter frame (6) is provided with three filter screens (63). The pore size of the three filter screens (63) decreases sequentially along the airflow direction, and the materials of the three filter screens (63) from the air inlet end to the air outlet end are stainless steel, glass fiber and polytetrafluoroethylene respectively. On the inner surface of the filter frame (6), there are two annular retaining rings (64) integrally formed for each filter screen (63), and the filter screen (63) is located between the two annular retaining rings (64).

2. The tail gas sterilization device for the fermentation production of Kluyveromyces lactis according to claim 1, characterized in that: The top of the filter rack (6) is provided with a pick-and-place slot (62) above each filter screen (63), and the width of the pick-and-place slot (62) matches the width of the frame of the filter screen (63).

3. The exhaust gas sterilization device for Kluyveromyces lactis fermentation production according to claim 2, characterized in that: One end of the filter frame (6) is fixedly connected to a protective net (61), and one end of the protective net (61) is attached to the air outlet of the sterilization branch pipe (2).

4. The exhaust gas sterilization device for Kluyveromyces lactis fermentation production according to claim 1, characterized in that: The inner surface of the sterilization branch pipe (2) is fixedly connected with a fixing ring (4), and the filter frame (6) is provided with a sealing coating at the contact point with the fixing ring (4). Two fixing components (5) are installed on the inner surface of the fixing ring (4). The fixing component (5) includes two mirror-distributed sleeves (51). The two sleeves (51) are fixedly connected to the inner surface of the sterilization branch tube (2). A return spring (53) is fixedly connected to one side of the inner wall of each of the two sleeves (51). A locking block (52) is fixedly connected to one end of each of the two return springs (53). The two locking blocks (52) are slidably connected to the two sleeves (51) respectively. A locking head (521) is fixedly connected to one end of the filter frame (6) to cooperate with the two locking blocks (52). Locking grooves (522) are provided on both sides of the outer surface of the locking head (521).

5. The tail gas sterilization device for the fermentation production of Kluyveromyces lactis according to claim 4, characterized in that: Both locking blocks (52) have hemispherical ports, and the locking head (521) is spherical.

6. The tail gas sterilization device for the fermentation production of Kluyveromyces lactis according to claim 4, characterized in that: The inner surface of the sleeve (51) has two limiting grooves (55), and the outer surface of the locking head (521) is fixedly connected with a limiting block (54) that works in conjunction with the two limiting grooves (55).

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