A malodorous waste gas biological reaction tower equipped with a filler replacement structure

Abstract

The present invention relates to the technical field of waste gas treatment, and particularly relates to a malodorous waste gas biological reaction tower equipped with a packing replacement structure, including a main body. A packing device is arranged inside the main body. The packing device includes a housing fixedly connected to the main body. A switching mechanism is arranged inside the housing. A first docking groove is formed at a position on the circumferential outer wall of the housing close to the switching mechanism. A second docking groove is formed at a position in the housing close to the first docking groove. The second docking groove communicates with the first docking groove. The switching mechanism includes a rotating bin rotatably connected to the inner wall of the housing. In the present invention, the driving motor drives the rotating disc to rotate, and components such as the push rod and the first spring work together to cause the anti-clamping plate of the grid assembly to flip and push out the packing, and at the same time drive the rotating bin to rotate. It can be completed only through the motor drive and the linkage of each component, saving manpower, material resources and time, and effectively avoiding damage to the internal structure of the tower.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and particularly to a malodorous waste gas bioreactor equipped with a packing replacement structure. Background Art

[0002] In the field of malodorous waste gas treatment, bioreactors are widely used due to their high efficiency and environmental friendliness. They decompose and transform pollutants with the help of microorganisms on the surface of the packing to achieve waste gas purification. However, the packing used in current bioreactors has many drawbacks, seriously affecting the equipment performance and treatment effectiveness.

[0003] In terms of service life, during long-term use, the packing is easily eroded by the complex components in the waste gas. When treating waste gas containing high-concentration acid and alkali substances, the chemical structure of the packing is damaged, resulting in fragmentation and pulverization, a reduction in mechanical strength, the inability to support the growth of microorganisms, and a significant loss of them, greatly shortening the service life. The accumulation of microbial metabolites will also block the pores, reducing the micro-contact area between the gas and microorganisms and accelerating the performance decline.

[0004] Traditional bioreactors lack convenience in packing replacement. The packing is tightly packed without a reasonable replacement structure, and a large amount of manpower, material resources, and time are required for replacement. Workers need to use complex tools to difficultly remove the old packing, and the tower internal structure is easily damaged during the operation, increasing the maintenance cost. Summary of the Invention

[0005] A malodorous waste gas bioreactor equipped with a packing replacement structure according to the present invention aims to solve the problems in the above background art that the packing of traditional bioreactors is tightly packed without a reasonable replacement structure, a large amount of manpower, material resources, and time are required for replacement, workers use complex tools to difficultly remove the old packing, the operation is likely to damage the tower internal structure, and the maintenance cost is increased.

[0006] To solve the above technical problems, a technical solution adopted by the present invention is: to provide a malodorous waste gas bioreactor equipped with a packing replacement structure, including a main body. A packing device is arranged inside the main body. The packing device includes a housing fixedly connected to the main body. A switching mechanism is arranged inside the housing. A docking groove one is opened at a position on the circumferential outer wall of the housing close to the switching mechanism. A docking groove two is opened at a position in the housing close to the docking groove one. The docking groove two communicates with the docking groove one;

[0007] The switching mechanism includes a rotating bin rotatably connected to the inner wall of the housing. The top and bottom of the rotating bin are provided with docking ports. Docking plates are arranged on both sides of the rotating bin. A turntable is rotatably connected between the docking plates and the rotating bin. Docking notches are formed on the outer wall of the docking plates. Pushing rods are arranged at positions corresponding to the docking notches on the outer wall of the turntable. One end of each pushing rod extends along the docking notch to a position close to the circumferential outer wall of the rotating bin. At the same time, a pushing plate slidably connected to the outer wall of the rotating bin is fixedly connected to this end of the pushing rod. A plurality of first springs are arranged on one side of the pushing plate. One end of each first spring is connected to a grid assembly.

[0008] The present invention is further configured that a plurality of second springs are arranged on the side of the grid assembly away from the first springs. One end of each second spring is connected to the inner wall of the housing. A driving motor is arranged at a position on the outer wall of the housing close to the turntable. The output end of the driving motor penetrates through the housing and is fixedly connected to the turntable.

[0009] The present invention is further configured that the grid assembly includes a connecting chain slidably connected to the inner wall of the first docking groove. Push plates are arranged at both ends of the connecting chain. One of the push plates is connected to the second spring. A rotating shaft is rotatably connected inside the connecting chain in a damped manner. The end of the rotating shaft penetrates to the outside of the connecting chain and is fixedly connected to a gear. A clamping plate is arranged below the rotating shaft.

[0010] The present invention is further configured that the grid assembly further includes a movable rod slidably connected to the inner wall of the second docking groove. Docking teeth engaged with the gear are arranged on the side of the movable rod close to the gear. One end of the movable rod is connected to the first spring.

[0011] The present invention is further configured that a gas distribution component is arranged inside the rotating bin. The gas distribution component includes a gas distribution cylinder fixedly connected to the inner wall of the rotating bin through a fixing rod. A plurality of air holes are uniformly formed through the circumferential outer wall of the gas distribution cylinder. A sliding groove is formed on the inner wall of the gas distribution cylinder. A movable plate is slidably connected inside the sliding groove.

[0012] The present invention is further configured that feeding and discharging ports are formed at the top and bottom of the housing. A receiving box is connected to the bottom of the housing through the feeding and discharging port. A receiving bin is arranged inside the receiving box. An air inlet hole is arranged at a position close to the top end on the outer wall of the receiving box.

[0013] The present invention is further configured that a feeding box is connected to the top of the housing through the feeding and discharging port. A bin door is hinged to one side of the feeding box. A discharging hole is arranged at the top end of the feeding box.

[0014] The beneficial effects of a malodorous waste gas bioreactor equipped with a filler replacement structure according to the present invention:

[0015] 1. The unique switching mechanism greatly improves the convenience of packing replacement. The driving motor drives the turntable to rotate, and then through the coordinated action of components such as the push rod and spring 1, the anti-clamping plate of the grid assembly flips to push out the packing, and the rotating bin rotates. During the entire replacement process, there is no need for staff to use complex tools to difficultly remove the old packing. It can be completed only through the motor drive and the linkage of each component, greatly saving manpower, material resources and time. At the same time, it avoids damage to the internal structure of the tower and reduces the maintenance cost.

[0016] 2. Through the gas distribution cylinder and the movable plate in the gas distribution component of the present invention, the gas distribution can be automatically adjusted according to the waste gas flow. When the gas flow is large and impacts the movable plate to make it move upward, the air holes at different heights are exposed, and the waste gas is discharged into the packing at different depths, avoiding the formation of a high-speed gas flow area at the bottom of the reaction tower due to narrow space or uneven air flow, reducing the high-speed gas flow wear, impact vibration and impurity impact wear on the bottom packing, and effectively extending the service life of the packing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the following will be described in detail with reference to the drawings.

[0018] For detailed description.

[0019] It should be noted that unless otherwise defined, the technical terms or scientific terms used in the present invention should have the ordinary meaning understood by those with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar terms used in the present invention do not represent any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this term cover the elements or objects listed after this term and their equivalents, without excluding other elements or objects. The terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", "right" are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0020] Figure 1 It is a three-dimensional structure diagram of a malodorous waste gas biological reaction tower equipped with a packing replacement structure according to the present invention;

[0021] Figure 2 It is a separation diagram of a malodorous waste gas biological reaction tower equipped with a packing replacement structure according to the present invention;

[0022] Figure 3 It is an internal structure diagram of the packing device of a malodorous waste gas biological reaction tower equipped with a packing replacement structure according to the present invention;

[0023] Figure 4 Internal bottom view of the packing device of a malodorous waste gas biological reaction tower with a packing replacement structure according to the present invention;

[0024] Figure 5 Separation diagram of the switching mechanism of a malodorous waste gas biological reaction tower with a packing replacement structure according to the present invention;

[0025] Figure 6 Cross-sectional view of the gas distribution component of a malodorous waste gas biological reaction tower with a packing replacement structure according to the present invention;

[0026] Figure 7 Separation diagram of the grid component of a malodorous waste gas biological reaction tower with a packing replacement structure according to the present invention.

[0027] The markings in the figure are: 1, main body; 2, packing device; 21, housing; 22, docking groove 1; 23, docking groove 2; 24, inlet and outlet; 25, switching mechanism; 251, rotating bin; 2511, docking port; 2512, docking plate; 2513, docking bayonet; 2514, turntable; 2515, push rod; 25151, push plate; 2516, spring 1; 2517, spring 2;

[0028] 2518, grid component; 25181, movable rod; 25182, docking tooth; 25183, connecting chain; 25184, push plate; 25185, rotating shaft; 25186, anti-clamping plate; 25187, gear;

[0029] 252, gas distribution component; 2521, fixed rod; 2522, gas distribution cylinder; 2523, air hole; 2524, sliding groove; 2525, movable plate;

[0030] 3, receiving box; 31, receiving bin; 32, air inlet hole; 4, feeding box; 41, bin door; 42, discharge hole. Detailed implementation manners

[0031] It should be noted that, without conflict, the embodiments and features in the embodiments of the present application can be combined with each other; the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left" and "right" are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated positions or elements must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be construed as limitations of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. Furthermore, unless otherwise clearly specified and defined, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or a transmission connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the communication inside two elements or the interaction relationship between two elements.

[0033] Please refer to Figures 1-7 , a malodorous waste gas bioreactor equipped with a packing replacement structure, including a main body 1. A packing device 2 is arranged inside the main body 1. The packing device 2 includes a housing 21 fixedly connected to the main body 1. A switching mechanism 25 is arranged inside the housing 21. A docking groove 22 is opened at a position on the circumferential outer wall of the housing 21 close to the switching mechanism 25. A docking groove 23 is opened at a position on the housing 21 close to the docking groove 22. The docking groove 23 communicates with the docking groove 22.

[0034] The switching mechanism 25 includes a rotating chamber 251 rotatably connected to the inner wall of the housing 21. Docking ports 2511 are opened at the top and bottom of the rotating chamber 251. Docking plates 2512 are arranged on both sides of the rotating chamber 251. A turntable 2514 is rotatably connected between the docking plates 2512 and the rotating chamber 251. Docking notches 2513 are opened on the outer walls of the docking plates 2512. Pushing rods 2515 are arranged at positions on the outer wall of the turntable 2514 corresponding to the docking notches 2513. One end of each pushing rod 2515 extends along the docking notch 2513 to a position close to the circumferential outer wall of the rotating chamber 251. At the same time, a pushing plate 25151 slidably connected to the outer wall of the rotating chamber 251 is fixedly connected to this end of the pushing rod 2515. A number of first springs 2516 are arranged on one side of the pushing plate 25151. One end of each first spring 2516 is connected to a grid assembly 2518. A number of second springs 2517 are arranged on the side of the grid assembly 2518 away from the first springs 2516. One end of each second spring 2517 is connected to the inner wall of the housing 21. A driving motor is arranged on one side of the outer wall of the housing 21 close to the turntable 2514. The output end of the driving motor penetrates the housing 21 and is fixedly connected to the turntable 2514.

[0035] By adopting the above technical solution, the core component of the switching mechanism 25 is the rotating bin 251, which is flexibly rotatably connected to the inner wall of the housing 21. Docking ports 2511 are skillfully opened at both the top and bottom of the rotating bin 251 to facilitate the entry and exit of the filler. On both sides of the rotating bin 251, docking plates 2512 are provided, and the docking plates 2512 and the rotating bin 251 are rotatably connected through a turntable 2514. At a position on the outer wall of the turntable 2514 corresponding to the docking bayonet 2513 on the docking plate 2512, a push rod 2515 is installed. One end of the push rod 2515 extends along the docking bayonet 2513 to near the circumferential outer wall of the rotating bin 251 and is fixedly connected with a push plate 25151, and the push plate 25151 is slidably connected to the outer wall of the rotating bin 251. To push and fix the filler, a number of first springs 2516 are equipped on one side of the push plate 25151, and the other ends of the first springs 2516 are connected to the grid assembly 2518. On the other side of the grid assembly 2518, a number of second springs 2517 are also provided, and one ends of these second springs 2517 are firmly connected to the inner wall of the housing 21. In order to drive the turntable 2514 to rotate, a drive motor is specially installed on one side of the outer wall of the housing 21, and its output end directly penetrates the housing 21 and is fixedly connected with the turntable 2514, thus realizing the flexible operation of the entire switching mechanism 25.

[0036] The grid assembly 2518 includes a connecting chain 25183 slidably connected to the inner wall of the first docking groove 22. Push plates 25184 are provided at both ends of the connecting chain 25183. One of the push plates 25184 is connected to the second spring 2517. A rotating shaft 25185 is rotatably connected to the inside of the connecting chain 25183 through damping. The end of the rotating shaft 25185 penetrates outside the connecting chain 25183 and is fixedly connected with a gear 25187. A clamping plate 25186 is provided below the rotating shaft 25185. The grid assembly 2518 further includes a movable rod 25181 slidably connected to the inner wall of the second docking groove 23. A docking tooth 25182 meshing with the gear 25187 is provided on one side of the movable rod 25181 close to the gear 25187. One end of the movable rod 25181 is connected to the first spring 2516.

[0037] By adopting the above technical solution, a clamping plate 25186 is specially provided below the rotating shaft 25185 to provide stable support and guiding functions when the filler is pushed out. In addition, the grid assembly 2518 further includes a movable rod 25181 slidably connected to the inner wall of the second docking groove 23. A docking tooth 25182 meshing with the gear 25187 is installed on one side of the movable rod 25181 close to the gear 25187. Through the meshing of the gear 25187 and the rack, precise power transmission is achieved. One end of the movable rod 25181 is connected to the first spring 2516 to ensure that the assembly can respond flexibly and reset when stressed.

[0038] Inside the rotating bin 251, there is a gas distribution component 252. The gas distribution component 252 includes a gas distribution cylinder 2522 fixedly connected to the inner wall of the rotating bin 251 through a fixing rod 2521. A plurality of air holes 2523 are evenly penetrated through the circumferential outer wall of the gas distribution cylinder 2522. A sliding groove 2524 is formed on the inner wall of the gas distribution cylinder 2522, and a movable plate 2525 is slidably connected inside the sliding groove 2524.

[0039] By adopting the above technical solution, a gas distribution component 252 is carefully configured inside the rotating bin 251. The core of this component is the gas distribution cylinder 2522, which is firmly connected to the inner wall of the rotating bin 251 through the fixing rod 2521. A plurality of air holes 2523 are evenly distributed on the circumferential outer wall of the gas distribution cylinder 2522, and these air holes 2523 are the key channels for waste gas to enter the packing layer. To further optimize the gas distribution, a sliding groove 2524 is specially formed on the inner wall of the gas distribution cylinder 2522, and the movable plate 2525 is slidably connected inside the sliding groove 2524. The movable plate 2525 can automatically adjust its position according to the flow rate of the waste gas, thereby controlling the opening degree of the air holes 2523 at different heights, ensuring that the waste gas can be evenly and efficiently distributed to each depth of the packing layer, and improving the biological purification effect.

[0040] Feeding and discharging ports 24 are provided at the top and bottom of the housing 21. The bottom of the housing 21 is connected to a receiving box 3 through the feeding and discharging port 24. A receiving bin 31 is arranged inside the receiving box 3. An air inlet hole 32 is provided at a position near the top of the outer wall of the receiving box 3. The top of the housing 21 is connected to a feeding box 4 through the feeding and discharging port 24. A bin door 41 is hinged on one side of the feeding box 4, and a discharging hole 42 is provided at the top of the feeding box 4.

[0041] By adopting the above technical solution, feeding and discharging ports 24 are cleverly designed at the top and bottom of the housing 21. These openings not only facilitate the feeding and discharging of the packing, but also ensure the compactness of the internal structure of the reaction tower. At the bottom of the housing 21, the feeding and discharging port 24 is directly connected to the receiving box 3. A receiving bin 31 is equipped inside the receiving box 3 for collecting the replaced old packing. To optimize the intake efficiency of the waste gas, an air inlet hole 32 is specially provided at a position near the top of the outer wall of the receiving box 3 to ensure that the waste gas can smoothly enter the inside of the reaction tower.

[0042] The working principle and usage process of the embodiment of the present invention:

[0043] In the normal state, the docking port 2511 of the rotating bin 251 will be aligned with the feeding and discharging port 24. The filler is conveyed into the inside of the feeding box 4 by opening the bin door 41. The filler falls into the inside of the rotating bin 251 at the topmost layer through the feeding box 4. The waste gas is conveyed into the filler device 2 at the bottommost layer through the air inlet hole 32. The waste gas will enter the inside of the rotating bin 251 through the grid assembly 2518 and the docking port 2511. The waste gas will be biologically purified through the filler and then enter the filler device 2 at the upper layer. When the waste gas enters the filler device 2, some gas will directly enter the filler. Sometimes, when the gas flow rate is large, it will impact the movable plate 2525 in the gas distribution assembly 252 and cause it to move upward. By pushing the movable plate 2525, the air holes 2523 at different heights are exposed, and then the waste gas is discharged into the filler at different depths through the air holes 2523.

[0044] In the bottom of the reaction tower, due to the narrow space or uneven air flow, a high-speed air flow area is likely to be formed. The filler at the bottom is continuously rubbed by the high-speed air flow, wearing its outer structure, making the filler particles smaller and the surface rough. Soft plastic fillers, for example, are likely to break due to the decrease in mechanical strength. In addition, due to the impact of the air flow causing the filler to vibrate, the filler collides frequently with each other and with the inner wall of the tower. Especially the corners and edges are prone to damage. In the long term, the connection parts will also become loose, damaging the overall structural stability. The connection parts of the modular filler may be affected by this. Moreover, impurities such as dust and particulate matter in the waste gas impact the surface of the filler with the air flow, and the sharp impurities scratch and cause more serious wear. The accumulation of impurities will also change the air flow state to form eddies, intensifying the impact erosion. When treating waste gas containing a large amount of dust, the bottom filler will have reduced durability due to dust coverage and wear.

[0045] Therefore, after the filler has been operating for a certain period of time, the gas supply will be stopped. Then, starting from the filler device 2 at the bottommost, the driving motor first drives the turntable 2514. The rotation of the turntable 2514 will drive the push rod 2515 to move within a small range in the docking bayonet 2513. The movement of the push rod 2515 will push the movable rod 25181 to displace through the first spring 2516. The movement of the movable rod 25181 will drive the gear 25187 to rotate through the docking teeth 25182. The gear 25187 drives the anti-clamping plate 25186 to flip through the rotating shaft 25185. The flipping of the anti-clamping plate 25186 will be stuck on the adjacent rotating shaft 25185. The flipping of the anti-clamping plate 25186 will push out the filler stuck between the rotating shafts 25185. After the anti-clamping plate 25186 is stuck, the movable rod 25181 will not be able to move. At the same time, the push rod 2515 drives the rotating bin 251 to rotate through the docking plate 2512;

[0046] The push rod 2515 will continue to push the first spring 2516. However, since the movable rod 25181 cannot move, the driving force will be transmitted to the second spring 2517 through the connecting chain 25183. Because the strength of the second spring 2517 is greater than that of the first spring 2516, the first spring 2516 will be compressed. Meanwhile, the grid assembly 2518 remains in place. When the rotating bin 251 rotates until the docking port 2511 disengages from the inlet / outlet 24, the extrusion force will act on the second spring 2517 to compress it, and at the same time drive the grid assembly 2518 out of the range of the inlet / outlet 24. The rotating bin 251 continues to rotate until the upper docking port 2511 rotates to the lower position. At the same time, the packing material that was previously in the upper position will start to fall. After the packing material is emptied, the driving motor drives the rotating bin 251 to rotate in the reverse direction, and the rest starts to reset synchronously. Then the upper packing device 2 starts to rotate, and the packing material that was previously in the lower position finally falls. Through rotation, the packing material in the bottommost packing device 2 is discharged into the receiving bin 31, and the packing material in the position above it will fall into the lower packing device 2 by flipping. Finally, the packing material is fed into the uppermost packing device 2 through the feeding box 4.

[0047] In summary, compared with the prior art, the embodiments of the present invention have the following advantages:

[0048] Advantage 1: The present invention realizes the efficient automation of packing replacement through the unique switching mechanism 25. The driving motor drives the turntable 2514 to rotate, and then the push rod 2515 moves within the docking bayonet 2513. The movable rod 25181 is displaced through the first spring 2516, driving the gear 25187 and the anti-clamping plate 25186 to flip and push out the packing material. After that, the push rod 2515 drives the rotating bin 251 to rotate through the docking plate 2512. Utilizing the different strength characteristics of the first spring 2516 and the second spring 2517, the packing replacement process is completed in an orderly manner. The entire process does not require manual operation with complex tools, greatly saving manpower, material resources, and time, avoiding damage to the internal structure of the tower, and reducing maintenance costs, which is incomparable to traditional bioreactors.

[0049] Advantage 2: The design of the gas distribution component 252 greatly improves the working environment of the packing material. When the waste gas flow rate changes, the movable plate 2525 slides within the gas distribution cylinder 2522, and the air holes 2523 at different heights are exposed as needed, discharging the waste gas evenly into the packing material at different depths. This effectively avoids the formation of a high-speed gas flow area at the bottom of the reaction tower due to narrow space or uneven air flow, reducing the high-speed gas flow abrasion, impact vibration, and impurity impact abrasion on the packing material, thereby significantly extending the service life of the packing material. Compared with traditional bioreactors, it can better maintain the performance of the packing material when treating waste gas containing complex components.

[0050] Advantage 3: The close cooperation between the main body 1 and the packing device 2, as well as the coordinated operation of each component, ensure the high efficiency and stability of waste gas treatment. The waste gas enters from the air inlet hole 32 and passes through each layer of the packing device 2 in turn for biological purification. The gas distribution component 252 ensures the uniform distribution of the waste gas in the packing, enabling the waste gas to fully contact the microorganisms on the surface of the packing and improving the decomposition and conversion efficiency of pollutants. At the same time, the convenient packing replacement and long service life of the packing enable the equipment to operate continuously and stably, ensuring the high quality and high efficiency of the treatment of malodorous waste gas, and having obvious advantages in the field of waste gas treatment technology.

[0051] Advantage 4: The structural design of the present invention fully considers various factors during the operation of the equipment. In terms of the vibration and collision of the packing, through reasonable gas flow distribution and packing fixing methods, the frequent collision between the packings and with the inner wall of the tower is reduced, the risk of loosening of the connection parts is lowered, and the stability of the overall structure is enhanced. For example, the grid component 2518 plays a certain role in fixing the packing, to a certain extent avoiding the excessive displacement and collision of the packing caused by the air flow impact, making the connection parts of the modular packing more stable, and being able to better maintain the structural integrity during long-term operation compared with the traditional biological reaction tower.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A malodorous waste gas biological reaction tower equipped with a packing replacement structure, comprising a main body (1), characterized in that: A packing device (2) is arranged inside the main body (1). The packing device (2) includes a housing (21) fixedly connected to the main body (1). A switching mechanism (25) is arranged inside the housing (21). A first docking groove (22) is formed in the circumferential outer wall of the housing (21) near the switching mechanism (25). A second docking groove (23) is formed in the housing (21) near the first docking groove (22). The second docking groove (23) communicates with the first docking groove (22); The switching mechanism (25) includes a rotating bin (251) rotatably connected to the inner wall of the housing (21). Docking ports (2511) are formed at the top and bottom of the rotating bin (251). Docking plates (2512) are arranged on both sides of the rotating bin (251). A turntable (2514) is rotatably connected between the docking plate (2512) and the rotating bin (251). Docking notches (2513) are formed in the outer wall of the docking plate (2512). A push rod (2515) is arranged on the outer wall of the turntable (2514) corresponding to the docking notch (2513). One end of the push rod (2515) extends along the docking notch (2513) to a position close to the circumferential outer wall of the rotating bin (251). At the same time, a push plate (25151) slidably connected to the outer wall of the rotating bin (251) is fixedly connected to this end of the push rod (2515). A plurality of first springs (2516) are arranged on one side of the push plate (25151). One end of the first spring (2516) is connected to a grid assembly (2518); On the side of the grid assembly (2518) away from the first spring (2516), a number of second springs (2517) are provided. The strength of the second springs (2517) is greater than that of the first spring (2516). One end of the second springs (2517) is connected to the inner wall of the housing (21). On one side of the outer wall of the housing (21) near the turntable (2514), a driving motor is provided. The output end of the driving motor penetrates through the housing (21) and is fixedly connected to the turntable (2514). The grid assembly (2518) includes a connecting chain (25183) slidably connected to the inner wall of the first docking groove (22). At both ends of the connecting chain (25183), push plates (25184) are provided. One of the push plates (25184) at one end is connected to the second spring (2517). Inside the connecting chain (25183), a rotating shaft (25185) is rotatably connected with damping. The end of the rotating shaft (25185) penetrates to the outside of the connecting chain (25183) and is fixedly connected with a gear (25187). Below the rotating shaft (25185), a clamping prevention plate (25186) is provided. At the top and bottom of the housing (21), feeding and discharging ports (24) are opened. When the clamping prevention plate (25186) flips, it will be stuck on the adjacent rotating shaft (25185). When the clamping prevention plate (25186) flips, the filler stuck between the rotating shafts (25185) will be pushed out. After the clamping prevention plate (25186) is stuck, the movable rod (25181) will not be able to move; The grid assembly (2518) further includes a movable rod (25181) slidably connected to the inner wall of the second docking groove (23). On the side of the movable rod (25181) close to the gear (25187), a docking tooth (25182) meshing with the gear (25187) is provided. One end of the movable rod (25181) is connected to the first spring (2516).

2. The malodorous waste gas biological reaction tower equipped with a filler replacement structure according to claim 1, wherein: Inside the rotating bin (251), a gas distribution assembly (252) is provided. The gas distribution assembly (252) includes a gas distribution cylinder (2522) fixedly connected to the inner wall of the rotating bin (251) through a fixing rod (2521). A number of air holes (2523) are evenly penetrated through the circumferential outer wall of the gas distribution cylinder (2522). A sliding groove (2524) is opened on the inner wall of the gas distribution cylinder (2522). Inside the sliding groove (2524), a movable plate (2525) is slidably connected.

3. The biological reaction tower for malodorous waste gas equipped with a packing replacement structure according to claim 1, wherein: The bottom of the housing (21) is connected to a receiving box (3) through the feeding and discharging port (24). Inside the receiving box (3), a receiving bin (31) is provided. An air inlet hole (32) is provided at a position near the top of the outer wall of the receiving box (3).

4. The biological reaction tower for malodorous waste gas equipped with a packing replacement structure according to claim 1, characterized in that: The top of the housing (21) is connected to a feeding box (4) through the feeding and discharging port (24). One side of the feeding box (4) is hinged with a bin door (41). At the top end of the feeding box (4), a discharging hole (42) is provided.

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