Rapid culture device for sewage treatment biological bacteria

Abstract

The utility model relates to the technical field of biological bacterium culture devices, and discloses a sewage treatment biological bacterium rapid culture device which comprises a box body, a motor is fixedly connected to the outer portion of the box body, a transmission column is fixedly connected to the driving end of the motor, and a stabilizing disc is fixedly connected to the outer portion of the transmission column. A plurality of sliding sleeves are fixedly connected to the outer portion of the stabilizing disc, sliding plates are slidably connected to the inner walls of the sliding sleeves, ejection columns are fixedly connected to the outer portions of the sliding plates, springs are fixedly connected to the ends, away from the ejection columns, of the sliding plates, trays are movably connected to the ends, away from the sliding plates, of the ejection columns, and pulling plates are fixedly connected to the outer portions of the trays. According to the culture dish, when the top column moves excessively, the tray is in contact with the rubber block, the stability of the tray to the culture dish is guaranteed under the support of the rubber block, and due to the characteristics of the tray, the safety of the culture dish is enhanced, meanwhile, the working efficiency is improved, and bacterial colonies are convenient to observe.

Description

Technical Field

[0001] This utility model relates to the field of biological bacteria cultivation devices, and in particular to a rapid biological bacteria cultivation device for wastewater treatment. Background Technology

[0002] Wastewater treatment biological rapid cultivation devices are key equipment for accelerating the reproduction of beneficial microbial communities and improving wastewater treatment efficiency. Common types are diverse: The biological tank type uses a biological tank as its core, paired with a circulating pump to circulate wastewater, evenly distributing nutrients and dissolved oxygen to create a stable environment for microorganisms and accelerate their growth; the reaction vessel type is equipped with a reaction vessel and a stirring device. After the liquid pump delivers wastewater into the vessel, the stirring device ensures thorough mixing of the wastewater and bacteria, and a gas-liquid separation tank achieves a secondary reaction, improving cultivation efficiency; the box type is equipped with ultraviolet disinfection and temperature control systems to precisely regulate temperature and humidity, maintain internal cleanliness, and provide ideal conditions for the growth of biological bacteria.

[0003] The box-type biological culture device mainly consists of a box, culture racks, a temperature control system, a humidity control system, a lighting system, and a disinfection system. The box provides protection and isolation; the culture racks hold the culture vessels. During operation, the temperature and humidity control system precisely regulates the temperature and humidity inside the box to meet the growth requirements of the microorganisms. The lighting system provides suitable light according to the settings. The disinfection system is activated periodically, using ultraviolet light and other methods to sterilize and prevent contamination, creating a comprehensive and stable growth environment for the microorganisms.

[0004] In existing technologies, some box-type biological culture devices still rely on manual opening and closing of the doors for observation of the internal culture dishes. This method cannot automatically move the culture dishes for observation without opening the doors while maintaining internal stability. The temperature and humidity inside the box are ideal for bacterial growth; opening the door disrupts this stability, causing rapid changes in temperature and humidity, which is detrimental to the continuous cultivation of the bacteria, slowing their growth rate, or even causing bacterial death. Furthermore, opening the door allows outside air to enter the culture box, introducing dust, bacteria, and other contaminants that interfere with normal bacterial growth and affect the accuracy of the culture results. Therefore, a rapid culture device for wastewater treatment biological bacteria is proposed to address these problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a rapid culture device for sewage treatment bacteria, which aims to improve the problem in the prior art that it is impossible to automatically move the bacteria without opening the cabinet door for observation while ensuring internal stability.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A rapid culture device for wastewater treatment microorganisms includes a housing. A motor is fixedly connected to the outside of the housing. A transmission column is fixedly connected to the drive end of the motor. A stabilizing plate is fixedly connected to the outside of the transmission column. Multiple sliding sleeves are fixedly connected to the outside of the stabilizing plate. A sliding plate is slidably connected to the inner wall of the sliding sleeve. A top column is fixedly connected to the outside of the sliding plate. A spring is fixedly connected to the end of the sliding plate away from the top column. A tray is movably connected to the end of the top column away from the sliding plate. A pull plate is fixedly connected to the outside of the tray. A rubber block is fixedly connected to the outside of the stabilizing plate. A locking block is fixedly connected to the end of the transmission column away from the motor. A rotating column is movably connected to the end of the locking block away from the transmission column. A fixing plate is movably connected to the outside of the rotating column. A sealing assembly for sealing subsequent components is rotatably connected to the outside of the housing.

[0008] As a further description of the above technical solution:

[0009] The sealing assembly includes a door, a gasket fixedly connected to the outside of the door, a retaining ring fixedly connected to the end of the gasket away from the door, a compression ring movably connected to the outside of the retaining ring, a buffer plate fixedly connected to the end of the compression ring away from the retaining ring, and the outside of the door rotatably connected to the outside of the housing.

[0010] As a further description of the above technical solution:

[0011] The outer side of the tray is in contact with the inner wall of the stabilizing disk, and the outer side of the tray is in contact with the outer side of the rubber block;

[0012] As a further description of the above technical solution:

[0013] The top column is slidably connected to the inner wall of the sliding sleeve, and the end of the spring away from the sliding plate is fixedly connected to the inner wall of the sliding sleeve.

[0014] As a further description of the above technical solution:

[0015] The pull plate is externally movably connected to the inner wall of the stabilizing disk, and the outer side of the transmission column is in contact with the inner wall of the fixed plate.

[0016] As a further description of the above technical solution:

[0017] The end of the rotating column away from the locking block is rotatably connected to the inner wall of the box, and the outside of the fixing plate is fixedly connected to the inner wall of the box;

[0018] As a further description of the above technical solution:

[0019] The outer surface of the gasket is in contact with the outer surface of the buffer sheet, and the outer surface of the buffer sheet is fixedly connected to the outside of the housing.

[0020] As a further description of the above technical solution:

[0021] The outer surface of the gasket is in contact with the outer surface of the compression ring, and the outer surface of the box door is in contact with the outer surface of the buffer sheet.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the entire tray is lifted and placed inside the stabilizing plate by a pull plate, and the pull plate is placed in the slot outside the stabilizing plate to enhance the stability of the tray. When the tray is placed on top of the stabilizing plate, the tray will apply pressure to the top column, and then the top column will squeeze the spring through the sliding plate. At this time, the spring will deform and compress the space to allow the top column to move. At the same time, there is a rubber block. When the top column moves excessively, the tray will come into contact with the rubber block. With the support of the rubber block, the stability of the tray on the culture dish is ensured. Due to its properties, it can also buffer, enhance the safety of the culture dish, improve work efficiency, and facilitate the observation of colonies.

[0024] 2. In this utility model, when the petri dish is sealed and stored, the gasket is closed with the box door and the box body. At this time, the gasket will be pressured by the box door. The gasket with the retaining ring will be squeezed inside the squeezing ring, so that the gasket contacts the squeezing ring and the buffer sheet to seal, which improves the sealing effect of the petri dish and ensures that the colonies inside the petri dish are not contaminated. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a rapid culture device for wastewater treatment bacteria proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the gasket in a rapid culture device for wastewater treatment bacteria proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the stabilizing plate of a rapid culture device for wastewater treatment bacteria proposed in this utility model;

[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0029] Figure 5 for Figure 3 Enlarged view of point B in the middle.

[0030] Legend:

[0031] 1. Housing; 2. Motor; 3. Transmission column; 4. Stabilizing plate; 5. Sliding sleeve; 6. Slide plate; 7. Top column; 8. Spring; 9. Tray; 10. Pull plate; 11. Rubber block; 12. Clamping block; 13. Rotating column; 14. Fixing plate; 15. Housing door; 16. Gasket; 17. Snap ring; 18. Compression ring; 19. Buffer plate. Detailed Implementation

[0032] 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.

[0033] Reference Figures 3 to 5 This utility model provides an embodiment of a rapid culture device for wastewater treatment microorganisms, comprising a housing 1, which provides a relatively stable spatial environment for the culture of microorganisms. A motor 2 is fixedly connected to the outside of the housing 1, serving as the power source for the entire device and providing power for its operation. During use, when it is necessary to observe the condition of the microbial community inside the culture dish, the motor 2 above the housing 1 is activated, converting electrical energy into mechanical energy. A transmission column 3 is fixedly connected to the drive end of the motor 2; the rotation of the motor 2 drives the transmission column 3 to rotate, thereby transmitting power. The motor 2 then drives the transmission column 3, which, through a locking block 12 connected to the transmission column 3, drives the rotating column 13 to rotate. The transmission column 3 acts as a bridge in this process. A stabilizing plate 4 is fixedly connected to the outside of the transmission column 3, rotating under the drive of the transmission column 3 and providing a platform for the placement and rotation of the tray 9. When the transmission column 3 and the rotating column 13 rotate, they will drive the connected stabilizing disk 4 to rotate. The rotation of the stabilizing disk 4 will cause the tray 9 placed inside it to rotate as well, making it convenient to observe the petri dish from all angles.

[0034] Multiple sliding sleeves 5 are fixedly connected to the outside of the stabilizing plate 4. These sleeves provide tracks for the sliding of the slide plate 6 and the top column 7, ensuring their stability. The slide plate 6 is slidably connected to the inner wall of the sliding sleeve 5. The sliding of the slide plate 6 within the sleeve 5 drives the top column 7 to move accordingly. The top column 7 is fixedly connected to the outside of the slide plate 6. Driven by the slide plate 6, the top column 7 provides support and cushioning for the tray 9. When the tray 9 is placed above the stabilizing plate 4, it applies pressure to the top column 7, causing it to move. A spring 8 is fixedly connected to the end of the slide plate 6 furthest from the top column 7. The spring 8 is elastic and deforms under external force, providing cushioning and resetting. The top column 7 then compresses the spring 8 via the slide plate 6, causing the spring 8 to deform and compress the space to allow the top column 7 to move. When the pressure on the tray 9 is released, the spring 8 pushes the top column 7 back to its original position.

[0035] A tray 9 is movably connected to the end of the top column 7 furthest from the slide plate 6. The tray 9 serves as a support platform for the culture dishes. When placing the culture dishes, they are first placed on top of the tray 9, and then the entire tray 9 is lifted and placed inside the stabilizing plate 4 using the pull plate 10. The pull plate 10 is fixedly connected to the outside of the tray 9, facilitating easy handling and placement by the operator, improving operational convenience. The entire tray 9 is then lifted and placed inside the stabilizing plate 4 using the pull plate 10, which is then positioned in a slot on the outside of the stabilizing plate 4 to enhance stability. A rubber block 11 is fixedly connected to the outside of the stabilizing plate 4. The rubber block 11 is elastic and cushioning, providing support and cushioning when the tray 9 moves excessively. When the top column 7 moves excessively, the tray 9 comes into contact with the rubber block 11. The rubber block 11 supports the tray 9, ensuring its stability over the culture dishes. Its cushioning properties also enhance the safety of the culture dishes, improve work efficiency, and facilitate colony observation.

[0036] Reference Figure 2 and Figure 5A locking block 12 is fixedly connected to the end of the transmission column 3 furthest from the motor 2. The locking block 12 can cooperate with the rotating column 13 to drive the transmission column 3 to rotate the rotating column 13. At this time, the motor 2 drives the transmission column 3, which in turn drives the rotating column 13 to rotate via the locking block 12 connected to the transmission column 3. The rotating column 13 is movably connected to the end of the locking block 12 furthest from the transmission column 3. The rotating column 13 rotates under the drive of the locking block 12, providing support for the rotation of the stabilizing disk 4. When the transmission column 3 and the rotating column 13 rotate, they drive the connected stabilizing disk 4 to rotate. A fixing plate 14 is movably connected to the outside of the rotating column 13. The fixing plate 14 supports and positions the rotating column 13, ensuring the stability of its rotation. During rotation, the rotating column 13 is movably connected to the fixing plate 14 and rotates along a fixed trajectory under the constraint of the fixing plate 14.

[0037] Reference Figures 1 to 2 The sealing assembly includes a door 15, which is the direct component for sealing the container 1. The sealing effect is achieved by closing the door 15 with the container 1. When storing petri dishes in a sealed container, the door 15 is closed to the container 1 to achieve sealed storage. A gasket 16 is fixedly connected to the outside of the door 15. The gasket 16 has good sealing performance and enhances the seal between the door 15 and the container 1. When the door 15 is closed to the container 1, the gasket 16 is subjected to pressure from the door 15, thus fulfilling its sealing function. A retaining ring 17 is fixedly connected to the end of the gasket 16 away from the door 15. The retaining ring 17 cooperates with the compression ring 18 to better fix the gasket 16 in the corresponding position, enhancing the sealing effect. The gasket 16, along with the retaining ring 17, is pressed inside the compression ring 18, causing the gasket 16 to make tight contact with the compression ring 18, achieving a seal.

[0038] A compression ring 18 is externally connected to the retaining ring 17. The compression ring 18, under the action of the gasket 16 and the retaining ring 17, further enhances the sealing effect, creating a relatively sealed space inside the chamber 1. The gasket 16, along with the retaining ring 17, is pressed against the inside of the compression ring 18, causing the gasket 16 to contact the compression ring 18 and the buffer sheet 19 for sealing. A buffer sheet 19 is fixedly connected to the end of the compression ring 18 away from the retaining ring 17. The buffer sheet 19 acts as a buffer when the chamber door 15 is closed, and also helps to enhance the sealing effect. The gasket 16 contacts the compression ring 18 and the buffer sheet 19 for sealing, improving the sealing effect on the petri dishes and ensuring that the colonies inside the petri dishes are not contaminated. The chamber door 15 is externally rotatably connected to the outside of the chamber 1. This rotatable connection allows the chamber door 15 to be easily opened and closed, facilitating operations inside the chamber 1 by operators, such as placing or removing petri dishes. When storing the culture dish in a sealed manner, the door 15 is closed to the body 1 to achieve sealed storage of the culture dish. When opened, the internal culture conditions can be observed and other operations can be performed.

[0039] Reference Figures 3 to 4 The outer surface of tray 9 contacts the inner wall of stabilizing plate 4. This contact ensures that tray 9 rotates with stabilizing plate 4, while also providing support. When stabilizing plate 4 rotates, tray 9, due to its contact with the inner wall, rotates along with it, facilitating comprehensive observation of the culture dish. The outer surface of tray 9 contacts the outer surface of rubber block 11. When tray 9 is subjected to external force causing excessive movement of the top column 7, rubber block 11 provides timely support and cushioning, ensuring the safety of the culture dish. When the top column 7 moves excessively, tray 9 contacts rubber block 11, which supports the stability of the culture dish and, due to its properties, provides cushioning, enhancing the safety of the culture dish and improving work efficiency, facilitating colony observation.

[0040] The top post 7 is externally slidably connected to the inner wall of the sliding sleeve 5. The sliding sleeve 5 provides a stable track for the sliding of the top post 7, ensuring that the top post 7 can move within a specified range and achieve its function of supporting and cushioning the tray 9. When the tray 9 is placed on the stabilizing plate 4 and applies pressure to the top post 7, the top post 7 slides within the sliding sleeve 5, compressing the spring 8 through the sliding plate 6. The end of the spring 8 away from the sliding plate 6 is fixedly connected to the inner wall of the sliding sleeve 5. This connection method allows the spring 8 to deform and compress under the pressure transmitted by the top post 7 through the sliding plate 6, and when the pressure is removed, it can push the top post 7 back to its original position, achieving cushioning and support for the tray 9. Subsequently, the top post 7 will compress the spring 8 through the sliding plate 6, at which time the spring 8 will deform and compress to allow the top post 7 to move. When the pressure on the tray 9 is removed, the spring 8 can push the top post 7 back to its original position.

[0041] Reference Figure 2 and Figure 5 The pull plate 10 is externally and movably connected to the inner wall of the stabilizing plate 4. This connection allows the pull plate 10 to move within the stabilizing plate 4, facilitating the operator to place the tray 9 inside the stabilizing plate 4 and position the pull plate 10 in the slot on the outside of the stabilizing plate 4, enhancing the stability of the tray 9. Subsequently, the entire tray 9 is lifted and placed inside the stabilizing plate 4 using the pull plate 10, and the pull plate 10 is again placed in the slot on the outside of the stabilizing plate 4, further enhancing the stability of the tray 9. The outer side of the transmission column 3 contacts the inner wall of the fixing plate 14. The fixing plate 14, through its contact with the transmission column 3, provides support and positioning for the transmission column 3, ensuring its stability during rotation and thus making the entire device operate more smoothly. When the transmission column 3 rotates, its outer side contacts the inner wall of the fixing plate 14, and under the support of the fixing plate 14, it rotates along a fixed trajectory, driving the stabilizing plate 4.

[0042] The end of the rotating column 13 furthest from the locking block 12 is rotatably connected to the inner wall of the housing 1. This connection provides a fixed fulcrum for the rotating column 13, allowing it to rotate stably under the influence of the locking block 12, thereby driving the stabilizing disk 4 to rotate. The rotating column 13 rotates around its connection point with the inner wall of the housing 1 under the influence of the locking block 12, providing power support for the rotation of the stabilizing disk 4. The fixing plate 14 is externally fixed to the inner wall of the housing 1. The fixing plate 14, fixed to the inner wall of the housing 1, provides stable support for the rotating column 13 and the transmission column 3, ensuring their stability during rotation and guaranteeing the normal operation of the entire device. The fixing plate 14 is firmly fixed to the inner wall of the housing 1, providing a stable support environment for the rotation of the rotating column 13 and the transmission column 3.

[0043] Reference Figures 1 to 2The outer surface of gasket 16 contacts the outer surface of buffer sheet 19. This contact allows gasket 16 and buffer sheet 19 to work together, enhancing the sealing effect of the chamber 1. Simultaneously, the buffer sheet 19's cushioning effect also protects gasket 16. Gasket 16 contacts compression ring 18 and buffer sheet 19 for sealing, improving the sealing effect on the culture dish and ensuring that the colonies inside the culture dish are not contaminated. The outer surface of buffer sheet 19 is fixedly connected to the outside of chamber 1. Fixed to the outside of chamber 1, buffer sheet 19 effectively cushions the impact of chamber door 15 on chamber 1 when the chamber door 15 is closed, while also assisting gasket 16 in enhancing the sealing effect. During the closing process of chamber door 15, buffer sheet 19 is fixed to the outside of chamber 1, playing a role in cushioning and auxiliary sealing. The outer surface of gasket 16 contacts the outer surface of compression ring 18. This contact allows gasket 16 to deform and fit better under pressure, further enhancing the sealing effect and preventing external factors from affecting the microorganisms inside the culture dish. The gasket 16, along with the retaining ring 17, is pressed inside the compression ring 18, causing the gasket 16 to contact the compression ring 18 and the buffer plate 19 for sealing. The outside of the door 15 contacts the outside of the buffer plate 19. When the door 15 is closed, the buffer plate 19 cushions the impact force on the door 15, protecting both the door 15 and the enclosure 1, while also enhancing the sealing effect. During the sealed storage of petri dishes, when the door 15 is closed to the enclosure 1, the buffer plate 19 contacts the door 15, providing cushioning and auxiliary sealing.

[0044] Working principle: When it is necessary to observe the condition of the microbial community inside the petri dish during use, the motor 2 on the top of the chamber 1 is started. The motor 2 will drive the transmission column 3 and the locking block 12 connected to the transmission column 3 to drive the rotating column 13 to rotate. When the transmission column 3 and the rotating column 13 rotate, the connected stabilizing plate 4 will rotate. The stabilizing plate 4 will drive the tray 9 placed inside to rotate, so that all the petri dishes can be observed.

[0045] When placing the petri dish, first place the petri dish on top of the tray 9, then use the pull plate 10 to lift the entire tray 9 and place it inside the stabilizing plate 4. Place the pull plate 10 in the slot on the outside of the stabilizing plate 4 to enhance the stability of the tray 9. When the tray 9 is placed on top of the stabilizing plate 4, the tray 9 will apply pressure to the top column 7. Then the top column 7 will squeeze the spring 8 through the sliding plate 6. At this time, the spring 8 will deform to compress the space to allow the top column 7 to move. At the same time, there is a rubber block 11. When the top column 7 moves excessively, the tray 9 will contact the rubber block 11. With the support of the rubber block 11, the stability of the tray 9 on the petri dish is ensured. Due to its properties, it can also buffer, enhance the safety of the petri dish, improve work efficiency, and facilitate the observation of colonies.

[0046] When the petri dish is sealed and stored, the door 15 is closed to the body 1. At this time, the gasket 16 will be pressured by the door 15. The gasket 16, along with the retaining ring 17, will be squeezed inside the compression ring 18, so that the gasket 16 contacts the compression ring 18 and the buffer sheet 19 to seal, which improves the sealing effect of the petri dish and ensures that the colonies inside the petri dish are not contaminated.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sewage treatment biological bacteria rapid culture device, comprising a box body (1), characterized in that: A motor (2) is fixedly connected to the outside of the housing (1). A transmission column (3) is fixedly connected to the drive end of the motor (2). A stabilizing disk (4) is fixedly connected to the outside of the transmission column (3). Multiple sliding sleeves (5) are fixedly connected to the outside of the stabilizing disk (4). A sliding plate (6) is slidably connected to the inner wall of the sliding sleeve (5). A top column (7) is fixedly connected to the outside of the sliding plate (6). A spring (8) is fixedly connected to the end of the sliding plate (6) away from the top column (7). The top column (7) is located away from the sliding plate (6). One end is movably connected to a tray (9), and the outside of the tray (9) is fixedly connected to a pull plate (10). The outside of the stabilizing plate (4) is fixedly connected to a rubber block (11). The end of the transmission column (3) away from the motor (2) is fixedly connected to a locking block (12). The end of the locking block (12) away from the transmission column (3) is movably connected to a rotating column (13). The outside of the rotating column (13) is movably connected to a fixing plate (14). The outside of the housing (1) is rotatably connected to a sealing assembly for sealing subsequent components.

2. The device for rapid cultivation of sewage treatment biological bacteria according to claim 1, characterized in that: The sealing assembly includes a door (15), a gasket (16) is fixedly connected to the outside of the door (15), a retaining ring (17) is fixedly connected to one end of the gasket (16) away from the door (15), a compression ring (18) is movably connected to the outside of the retaining ring (17), a buffer plate (19) is fixedly connected to one end of the compression ring (18) away from the retaining ring (17), and the outside of the door (15) is rotatably connected to the outside of the housing (1).

3. The device for rapid cultivation of sewage treatment biological bacteria according to claim 1, characterized in that: The outside of the tray (9) is in contact with the inner wall of the stabilizing disk (4), and the outside of the tray (9) is in contact with the outside of the rubber block (11).

4. The device for rapidly culturing sewage treatment biological bacteria according to claim 1, characterized in that: The top post (7) is slidably connected to the inner wall of the sliding sleeve (5), and the end of the spring (8) away from the sliding plate (6) is fixedly connected to the inner wall of the sliding sleeve (5).

5. The device for rapid cultivation of sewage treatment biological bacteria according to claim 1, characterized in that: The pull plate (10) is externally movably connected to the inner wall of the stabilizing disk (4), and the outer side of the transmission column (3) is in contact with the inner wall of the fixing plate (14).

6. The device for rapid cultivation of sewage treatment biological bacteria according to claim 1, characterized in that: The end of the rotating column (13) away from the locking block (12) is rotatably connected to the inner wall of the box (1), and the outside of the fixing plate (14) is fixedly connected to the inner wall of the box (1).

7. The device for rapid cultivation of sewage treatment biological bacteria according to claim 2, characterized in that: The outside of the gasket (16) is in contact with the outside of the buffer sheet (19), and the outside of the buffer sheet (19) is fixedly connected to the outside of the housing (1).

8. The device for rapid cultivation of sewage treatment biological bacteria according to claim 2, characterized in that: The outside of the gasket (16) is in contact with the outside of the compression ring (18), and the outside of the door (15) is in contact with the outside of the buffer sheet (19).

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