Air filtering and deodorizing system for livestock breeding

Abstract

The invention discloses an air filtering and deodorizing system for livestock breeding, and relates to the technical field of air purification. The system comprises a box body and a fan for driving airflow, wherein a water curtain mechanism, a water vapor removing mechanism and a filter element layer are sequentially arranged in the box body along the airflow direction. The water curtain mechanism comprises a rotatable outer net cylinder and an inner filter cylinder capable of axially moving, a rotary driving assembly is matched with an axial driving assembly, a water curtain is formed in combination with a water supply assembly, and composite self-cleaning of rotary centrifugation, mutual friction, axial scraping and high-pressure water flushing is achieved. And the problem of wet curtain argillization and blockage caused by high-load dust meeting water is fundamentally solved. The water vapor removing mechanism is used for removing water in the air flow through a water absorbing piece capable of rotating and extruding and regenerating on line. According to the invention, continuous and efficient air filtration and deodorization are realized, and continuous and stable operation of the system under complex breeding working conditions is ensured.

Description

Technical Field

[0001] This invention relates to the field of air purification technology, specifically to an air filtration and deodorization system for livestock farming. Background Technology

[0002] The livestock farming industry (such as large-scale pig and poultry houses) has extremely high requirements for precise control of indoor air quality and compliance with emission standards. Currently, integrated air filtration and deodorization systems are widely used to effectively reduce the concentration of harmful gases (such as ammonia and hydrogen sulfide) and particulate matter in the air. These systems typically utilize negative pressure generated by a downstream fan to guide air through a front-end evaporative cooling pad (water curtain) mechanism. As the air passes through the evaporative cooling pad, the flowing water film formed on its surface physically adsorbs or chemically neutralizes odor molecules in the airflow and initially intercepts large dust particles. This technology is widely used in existing technologies to improve the farming environment and reduce pollution to the surrounding atmosphere, and is a core device for disease prevention and environmental management in modern animal husbandry.

[0003] However, in actual livestock farming operations, air filtration and deodorization systems face severe reliability challenges. Because the air inside livestock sheds often contains large amounts of dander, fecal dust, and livestock feathers, when these high-load dust particles encounter the evaporative cooling pads, they easily mix with water within the complex pores of the pads, forming a sticky and difficult-to-remove sludge, leading to severe blockage. This not only increases system ventilation resistance and dramatically increases exhaust fan energy consumption, but also causes a sharp drop in localized chemical deodorization efficiency due to uneven airflow. In extreme cases, the negative pressure overload caused by evaporative pad blockage can even deform or damage the shed's enclosure structure. Furthermore, traditional timed cleaning methods cannot automatically adjust the cleaning frequency according to real-time fluctuations in dust load, and backwashing often requires interrupting the normal filtration and deodorization process, making it difficult to guarantee continuous and stable operation of the system under complex conditions. Summary of the Invention

[0004] The purpose of this invention is to provide an air filtration and deodorization system for livestock farming, which solves the problem of mud clogging of wet curtains caused by high-load dust accumulation.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution: The present invention includes a box and a fan disposed at one end of the box for driving airflow. The present invention is characterized in that a water curtain mechanism, a water vapor removal mechanism and a filter layer are sequentially arranged in the airflow direction inside the box. The water curtain mechanism includes a fixed horizontal plate, on which multiple filter screens are arranged side by side; The filter element includes an outer mesh cylinder rotatably mounted on the horizontal plate, and an inner filter cylinder coaxially disposed inside the outer mesh cylinder and movable along its axial direction. The inner filter cylinder has a filter screen portion on its cylinder wall. The water curtain mechanism also includes a water supply component for supplying water to the surfaces of the outer mesh cylinder and the inner filter cylinder to form a water curtain; The water curtain mechanism further includes a rotary drive assembly for driving the outer mesh cylinder to rotate, and an axial drive assembly for driving the inner filter cylinder to move along the axial direction of the outer mesh cylinder.

[0006] Preferably, the mesh size of the outer filter cylinder is larger than that of the filter screen of the inner filter cylinder; the inner filter cylinder has an air inlet opening on its cylinder wall for allowing airflow to enter its interior.

[0007] Preferably, the rotary drive assembly includes a first motor fixedly mounted on the horizontal plate, a first drive gear fixed to the output end of the first motor, an outer gear ring fixed to the top of the outer mesh cylinder, and a first transmission gear meshing with the adjacent outer gear ring.

[0008] Preferably, the axial drive assembly includes a water supply pipe fixed to the top of at least one of the inner filter cartridges, and an electric telescopic rod fixed to the bottom of the housing with its telescopic end connected to the water supply pipe, the water supply pipe being connected to an external water source.

[0009] Preferably, the water supply assembly includes a housing fixed to the lower side of the horizontal plate and connected to an external water source, and the bottom of the housing has a drain hole corresponding to the position of the outer mesh cylinder.

[0010] Preferably, the top of the inner filter cartridge is provided with an adaptive water distribution mechanism. The adaptive water distribution mechanism includes an inner ring fixed to the top port of the inner filter cartridge and an inner core disposed in the inner ring by a first spring. A rubber ring is fixed to the lower side of the inner ring. The inner ring and the inner side of the rubber ring together form an inner conical surface. The inner core has an outer conical surface that cooperates with the inner conical surface.

[0011] Preferably, the desiccant mechanism includes two parallel mounting plates and a plurality of water-absorbing elements disposed between the two mounting plates; The water-absorbing component includes a central rod rotatably mounted between two mounting plates, a movable block sleeved on the central rod and slidable along its axial direction, a plurality of steel wire ropes connected between the movable block and the mounting plate below, and a water-absorbing body wrapped around the plurality of steel wire ropes. The desiccant mechanism also includes a compression drive assembly for driving the multiple central rods to rotate synchronously.

[0012] Preferably, the extrusion drive assembly includes a second motor fixed to the mounting plate above, a second drive gear fixed to the output end of the second motor, and a second transmission gear fixed to the top of each of the central rods and meshing with each other.

[0013] Preferably, a rotating ring is rotatably mounted on the upper side of the movable block, and a second spring is fixed between the rotating ring and the upper mounting plate.

[0014] Preferably, the bottom of the box is provided with a water-proof plate and a drain pipe that communicates with the area separated by the water-proof plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This system uses a composite cleaning mechanism that combines centrifugal rotation of the outer mesh cylinder, friction between adjacent outer mesh cylinders, axial scraping of the inner filter cylinder, and high-pressure water flushing. This mechanism can actively and online remove high-load dust and debris (such as feathers, dander, and mud) accumulated on the surface of the water curtain, effectively preventing the problem of wet curtain blockage caused by "dust turning into mud when it meets water", and ensuring the permeability and deodorization efficiency of the system for long-term stable operation.

[0016] 2. Through an adaptive water distribution mechanism, the system can automatically adjust the outlet diameter according to the water supply pressure, ensuring that a uniform and complete water film can still be formed even when the water pressure fluctuates. This avoids localized drying (deodorization failure) or localized over-wetting (resistance surge) caused by uneven water curtain, thus improving the treatment effect and stability of the entire wet filtration stage.

[0017] 3. The dehumidification mechanism employs a synchronously rotating and squeezing suction element design. By driving the central rod to rotate, the suction element spirals and twists, squeezing out internal moisture to achieve physical dehydration. This process eliminates the need to disassemble or replace filter media, allowing the suction element to regain its dryness and absorption capacity online. This ensures the continuity of the system's dehumidification effect and prevents humid air from affecting the performance of subsequent filter layers.

[0018] 4. The system integrates a three-stage treatment process: water curtain deodorization (wet filtration), mechanical water vapor removal, and terminal fine filtration (filter cartridge), achieving integrated and efficient purification of harmful gases, dust, and water vapor. The water baffle and drain pipe design at the bottom of the unit enables orderly zoning and real-time discharge of wastewater, maintaining the cleanliness of the equipment's interior. The overall layout is compact and logically clear, achieving a balance between treatment effectiveness, operational reliability, and ease of maintenance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 for Figure 1 Schematic diagram of the internal planar structure of the middle box; Figure 3 for Figure 2 A three-dimensional structural diagram of the water curtain mechanism; Figure 4 This is a partial sectional view of the water curtain mechanism. Figure 5This is a schematic diagram of the three-dimensional structure of the outer mesh cylinder and the inner filter cylinder combined. Figure 6 This is a schematic diagram of the overall three-dimensional structure of the inner filter cartridge; Figure 7 This is a schematic diagram of the overall three-dimensional structure of the outer mesh cylinder; Figure 8 This is a top sectional view of the structure where the outer mesh cylinder and the inner filter cylinder are combined. Figure 9 for Figure 2 A three-dimensional structural diagram of the water vapor removal mechanism; Figure 10 This is a cross-sectional view of a single absorbent component.

[0020] The numbers in the diagram represent: 1-Box body; 11-Extension cover; 2-Support frame; 21-Ladder frame; 3-Fan; 4-Water curtain mechanism; 41-Horizontal plate; 42-Shell; 43-Drain hole; 44-Outer mesh cylinder; 441-Circular tube section; 451-Outer gear ring; 452-First transmission gear; 453-First drive gear; 454-First motor; 46-Inner filter cylinder; 461-Filter screen section; 462-Air inlet; 47-Water supply pipe; 48-Electric telescopic rod; 5-Water vapor removal mechanism; 50-Water suction component; 5 1-Mounting plate; 52-Center rod; 53-Wire rope; 54-Water absorber; 55-Moving block; 551-Rotating ring; 56-Second spring; 581-Second transmission gear; 582-Second drive gear; 583-Second motor; 59-Isolation plate; 6-Filter layer; 7-Water separator; 8-Drain pipe; 9-Adaptive water distribution mechanism; 91-Inner ring; 92-Rubber ring; 93-Inner conical surface; 94-Inner core; 95-Outer conical surface; 96-First spring; 97-Guide rod. Detailed Implementation

[0021] The above-mentioned and other technical features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings.

[0022] This embodiment provides a technical solution: an air filtration and deodorization system for livestock farming, such as... Figure 1 and Figure 2 As shown, its main structure mainly includes a support frame 2 for supporting the overall equipment, a box 1 installed on the top of the support frame 2, a fan 3, a water curtain mechanism 4, a water vapor removal mechanism 5, and a filter layer 6 installed in sequence inside the box 1.

[0023] like Figure 1As shown, the support frame 2 is installed on the surface of the breeding site to raise the deodorization system to a predetermined height. A ladder 21 is provided on one side of the support frame 2. The bottom end of the ladder 21 extends to the ground, and the top end is connected to the maintenance platform on the upper part of the support frame 2, which facilitates the operation of personnel to climb the support frame 2 via the ladder 21 to maintain and observe the equipment.

[0024] like Figure 1 and Figure 2 As shown, the housing 1 is fixedly mounted on the support frame 2. The housing 1 serves as the mounting carrier and airflow channel sealing shell for the entire filtration and deodorization system, and its interior forms a complete air handling chamber. At the exhaust end of the housing 1 (e.g., Figure 2 An extension cover 11 is provided at the opening on the right side of the box 1. The extension cover 11 extends outward and downward from the top of the box 1, covering the air inlet. It not only guides the airflow into the box 1, but also provides rain and dust protection in outdoor environments, preventing rainwater from directly entering the box 1.

[0025] like Figure 2 As shown, a fan 3 is installed at the air inlet end (the side opposite to the exhaust end) of the housing 1. The fan 3 is fixed to the end of the housing 1 by bolts or other fasteners. In actual operation, after the fan 3 is started, it will generate negative pressure inside the housing 1, thereby driving the air to be treated in the breeding shed to enter the housing 1 from one end of the fan 3. The air passes through the water curtain mechanism 4, the water vapor removal mechanism 5 and the filter layer 6 for filtration and deodorization treatment inside the housing 1 before finally being discharged.

[0026] like Figure 2 As shown, inside the housing 1, components for multi-stage air purification are sequentially arranged along the airflow direction (from the fan 3 side to the extension cover 11 side). The specific structure is described below: like Figure 2 As shown, a water curtain mechanism 4 is provided inside the housing 1 on the side near the fan 3. When the fan 3 starts and blows the air to be treated into the housing, the air first passes through the water curtain mechanism 4. Through the flowing water on the surface of the water curtain mechanism 4, harmful gases such as ammonia and hydrogen sulfide in the airflow are fully dissolved or chemically neutralized, and impurities in the air are intercepted and removed, completing the first stage of wet filtration.

[0027] like Figure 3As shown, a moisture removal mechanism 5 is located downstream of the water curtain mechanism 4. Since the air carries a large amount of water mist after passing through the water curtain mechanism 4, the moisture removal mechanism 5 removes the moisture entrained in the airflow through physical interception or adsorption. This process not only prevents moisture from negatively impacting subsequent filter elements but also ensures that the humidity of the air ultimately discharged from the system remains within a reasonable range.

[0028] like Figure 2 As shown, a filter layer 6 is provided downstream of the dehumidification mechanism 5 and on the side near the extension cover 11. The air, after deodorization and dehumidification treatment, finally passes through the filter layer 6. The filter layer 6 is used to intercept residual fine dust and dander in the airflow and adsorb residual odor molecules, achieving terminal fine filtration of the air. The treated clean air is finally discharged through the opening at the extension cover 11.

[0029] like Figure 2 As shown, multiple water-blocking plates 7 are provided on the bottom surface inside the housing 1. The water-blocking plates 7 extend vertically upwards, dividing the bottom of the housing 1 into multiple water collection areas, respectively receiving liquid dripping from the water curtain mechanism 4, the desiccant mechanism 5, and the filter layer 6. The water-blocking plates 7 effectively prevent wastewater generated during the treatment process from spreading disorderly at the bottom of the housing. A drain pipe 8 is connected to the bottom of each area enclosed by the water-blocking plates 7. The drain pipe 8 penetrates the bottom of the housing 1 and extends downwards to an external water collection facility. Through the drain pipe 8, the system can discharge the collected purified wastewater in real time, ensuring the cleanliness and hygiene of the internal environment of the housing 1.

[0030] like Figures 3 to 8 As shown, the water curtain mechanism 4 includes a horizontal plate 41, on which multiple linearly distributed filter screens are arranged. The filter screens are arranged close together, with a gap of 2mm-4mm between adjacent filter screens. Each filter screen includes an outer mesh cylinder 44 rotatably mounted on the horizontal plate 41. The upper and lower ends of the outer mesh cylinder 44 each have a round tube portion 441. The upper round tube portion 441 is rotatably connected to the horizontal plate 41, and the lower round tube portion 441 is rotatably connected to the bottom of the housing 1. An inner filter cylinder 46 is slidably arranged along its axial direction on the inner side of the outer mesh cylinder 44. An air inlet notch 462 is opened on the side of the inner filter cylinder 46 near the middle of the fan 3, while a filter screen portion 461 is arranged on the other side. It should be noted that the mesh count of the outer mesh cylinder 44 is greater than the mesh count of the filter screen portion 461.

[0031] like Figures 3 to 8As shown, a housing 42 is fixed to the lower side of the horizontal plate 41, and the housing 42 is connected to an external water source through a pipe. A drain hole 43, adapted to the shape of the outer mesh cylinder 44, is provided at the bottom of the housing 42, allowing water inside the housing 42 to flow down through the drain hole 43. The water then flows down along the outer mesh cylinder 44 and the inner filter cylinder 46 to form a water curtain. Air passing through the water curtain mechanism 4 will come into contact with the water flow. The outer mesh cylinder 44 performs preliminary filtration of the air, intercepting larger feathers and debris. The filter section 461 performs secondary filtration of the feathers and debris, intercepting smaller feathers and debris. This gradient mesh design achieves multi-stage filtration: the outer mesh cylinder 44 intercepts larger feathers and debris, while the filter section 461 performs secondary filtration of fine dust, effectively preventing the problem of single-layer filter screens being easily clogged and difficult to clean.

[0032] Furthermore, such as Figure 3 As shown, a rotary drive component is provided on the horizontal plate 41 to drive multiple outer mesh cylinders 44 to rotate synchronously. It includes a first motor 454 fixed to the horizontal plate 41, a first drive gear 453 fixed to the output end of the first motor 454, an outer gear ring 451 fixed to the top of the round tube portion 441 of the multiple filter screen components, a first transmission gear 452 rotatably mounted on the horizontal plate 41 via a rotating shaft on one side of two adjacent outer gear rings 451, and the corresponding first transmission gear 452 meshes with two adjacent outer gear rings 451, and the first drive gear 453 meshes with one of the adjacent outer gear rings 451.

[0033] Furthermore, such as Figure 3 As shown, the upper ends of multiple inner filter cylinders 46 are connected and fixed to a water supply pipe 47, and the water supply pipe 47 is connected to an external water source through a hose. An electric telescopic rod 48 is fixed at the bottom of the housing 1. The telescopic end of the electric telescopic rod 48 is connected to the water supply pipe 47. By controlling the extension and retraction of the water supply pipe 47, the inner filter cylinders 46 can be positioned vertically inside the outer mesh cylinder 44. This displacement allows for axial displacement between the inner filter cylinders 46 and the outer mesh cylinder 44, which can remove feathers and debris from both.

[0034] When the first motor 454 is running, it drives multiple outer mesh cylinders 44 to rotate synchronously. The centrifugal force generated by the rotation can throw off the wet debris adsorbed on the outer mesh cylinders 44. At the same time, the air turbulence and physical friction generated by the rotation of adjacent outer mesh cylinders 44 (for larger debris) can further improve the self-cleaning efficiency. Meanwhile, feathers and debris between two adjacent outer mesh cylinders 44 can also rub against each other, increasing the efficiency of removing feathers and debris. When feathers and debris adsorbed on the inner surface of the outer mesh cylinders 44 come into contact with the edge of the air inlet vent 462, they can be scraped into the inner cavity of the inner filter cylinder 46. In addition, the water pressure injected into the housing 42 can be increased. By increasing the water flow, impurities on the outer mesh cylinders 44 are removed. The reciprocating telescopic electric telescopic rod 48 drives the inner filter cylinder 46 to move along its axial direction, i.e., pass through. This composite cleaning method of "rotational centrifugal force + mutual friction + axial scraping + high-pressure water flushing" completely solves the problem of dust forming mud and clogging the water curtain when it comes into contact with water in the breeding environment, ensuring the efficiency and effectiveness of cleaning.

[0035] like Figure 4 As shown, an adaptive water distribution mechanism 9 is provided at the top of the inner filter cylinder 46. The adaptive water distribution mechanism 9 is used to adaptively control the water flow opening size according to water pressure to ensure the uniformity and stability of the water curtain formation. Specifically, the adaptive water distribution mechanism 9 includes an inner ring 91 fixed to the inner side of the top of the inner filter cylinder 46. A horizontal block is fixed inside the inner ring 91, and an inner core 94 is connected to the lower side of the horizontal block via a first spring 96. A guide rod 97, fixed to the horizontal block, is provided at the center of the inner core 94 to ensure the stability of its displacement. A rubber ring 92 is fixed to the lower side of the inner ring 91. The inner ring 91 and the inner side of the rubber ring 92 together form an inner conical surface 93, while the inner core 94 has an outer conical surface 95 corresponding to the shape of the inner conical surface 93. When the water pressure is low, the force of the first spring 96 pulls the inner core 94 upward, causing it to contact the rubber ring 92 to achieve a seal and prevent water from flowing downward.

[0036] When the external water supply pressure increases, the water flow pushes the inner core 94 downward, overcoming the elastic force of the first spring 96 and causing displacement, thereby widening the distance between the inner conical surface 93 and the outer conical surface 95. This action achieves a dynamic increase in the outlet diameter, allowing more water to flow down the walls of the inner filter cylinder 46 and the outer mesh cylinder 44. While ensuring the integrity of the water curtain, it also provides sufficient water volume support for self-cleaning flushing under high water pressure. When it is necessary to clean the inner filter cylinder 46, the water flow can be increased to flush it with the large downstream water flow.

[0037] like Figure 9 and Figure 10As shown, the dehumidification mechanism 5 includes two mounting plates 51 arranged symmetrically at the top and bottom. A plurality of water-absorbing elements 50 are arranged in a straight line between the two mounting plates 51, and two adjacent water-absorbing elements 50 are close to each other. This compact arrangement ensures that the airflow must come into full contact with the water-absorbing medium when passing through, thereby improving the dehumidification efficiency.

[0038] In terms of specific structure, each absorbent component 50 includes a central rod 52 rotatably mounted between two mounting plates 51. The middle part of the central rod 52 is designed as a polygonal structural segment, and a movable block 55 is sleeved on the polygonal structural segment. Due to the axial fit of the polygon, the movable block 55 can rotate synchronously with the central rod 52, and also has the freedom to slide along the axial direction of the central rod 52. Multiple steel wire ropes 53 are fixed between the lower mounting plate 51 and the movable block 55. The multiple steel wire ropes 53 are evenly distributed in a ring on the outside of the central rod 52 as a skeleton, and the outside of the ropes is provided with absorbent bodies 54 made of sponge or other easily absorbent materials. A rotating ring 551 is rotatably mounted on the upper side of the movable block 55 via a bearing, and a second spring 56 is fixed between the rotating ring 551 and the upper mounting plate 51.

[0039] To achieve automated dehydration, the central rod 52 in the multiple suction components 50 is driven to rotate synchronously by a compression drive component. For example... Figure 9 As shown, the extrusion drive includes a second motor 583 fixed on the upper mounting plate 51, and the output end of the second motor 583 is connected to a second drive gear 582. A second transmission gear 581 is fixed to the top of each center rod 52, and adjacent second transmission gears 581 mesh with each other.

[0040] During operation, when the central rod 52 is driven to rotate, the moving block 55 rotates synchronously, thereby causing the upper sides of multiple water-absorbing bodies 54 to rotate. Since the lower end is fixed to the mounting plate 51 at the bottom, the multiple water-absorbing bodies 54 will twist in a spiral shape. During the twisting process, the water-absorbing bodies 54 are compressed by force and pull the moving block 55 downward, overcoming the elastic force of the second spring 56. This spiral squeezing action can effectively squeeze out the water adsorbed inside the water-absorbing bodies 54, realizing the online regeneration of the filter media. Conversely, when the second motor 583 reverses, the water-absorbing bodies 54 are straightened and restored to a fluffy state, regaining their efficient water absorption capacity, and the moving block 55 rebounds upward under the restoring force of the second spring 56.

[0041] Furthermore, an isolation plate 59 is fixed inside the housing 1, and the isolation plate 59 has multiple through holes adapted to the moving block 55. When the second spring 56 retracts to its shortest stroke, the moving block 55 seals and blocks the through holes to prevent water vapor from splashing onto the upper side of the isolation plate 59.

[0042] The above description is merely a preferred embodiment of the present invention and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present invention, all of which will fall within the protection scope of the present invention.

Claims

1. An air filtration and deodorization system for livestock farming, comprising a housing (1) and a fan (3) disposed at one end of the housing (1) for driving airflow, characterized in that, The box (1) is provided with a water curtain mechanism (4), a water vapor removal mechanism (5) and a filter layer (6) in sequence along the airflow direction. The water curtain mechanism (4) includes a fixedly installed horizontal plate (41), on which multiple filter screens are arranged side by side; The filter element includes an outer mesh cylinder (44) rotatably mounted on the horizontal plate (41) and an inner filter cylinder (46) coaxially disposed inside the outer mesh cylinder (44) and movable along its axial direction. The inner filter cylinder (46) has a filter screen portion (461) on its cylinder wall. The water curtain mechanism (4) also includes a water supply assembly for supplying water to the surfaces of the outer mesh cylinder (44) and the inner filter cylinder (46) to form a water curtain; The water curtain mechanism (4) further includes a rotation drive assembly for driving the outer mesh cylinder (44) to rotate, and an axial drive assembly for driving the inner filter cylinder (46) to move axially along the outer mesh cylinder (44).

2. The air filtration and deodorization system for livestock farming according to claim 1, characterized in that, The mesh size of the outer mesh cylinder (44) is larger than that of the filter screen section (461) of the inner filter cylinder (46); an air inlet (462) is provided on the cylinder wall of the inner filter cylinder (46) for allowing airflow to enter its interior.

3. The air filtration and deodorization system for livestock farming according to claim 1 or 2, characterized in that, The rotary drive assembly includes a first motor (454) fixedly mounted on the horizontal plate (41), a first drive gear (453) fixed to the output end of the first motor (454), an outer gear ring (451) fixed to the top of the outer mesh cylinder (44), and a first transmission gear (452) meshing with the adjacent outer gear ring (451).

4. The air filtration and deodorization system for livestock farming according to claim 1, characterized in that, The axial drive assembly includes a water supply pipe (47) fixed to the top of at least one of the inner filter cartridges (46), and an electric telescopic rod (48) fixed to the bottom of the housing (1) and connected at its telescopic end to the water supply pipe (47), the water supply pipe (47) being connected to an external water source.

5. The air filtration and deodorization system for livestock farming according to claim 1, characterized in that, The water supply assembly includes a housing (42) fixed to the lower side of the horizontal plate (41) and connected to an external water source. The bottom of the housing (42) has a drain hole (43) corresponding to the position of the outer mesh cylinder (44).

6. The air filtration and deodorization system for livestock farming according to claim 4, characterized in that, The top of the inner filter cartridge (46) is provided with an adaptive water distribution mechanism (9). The adaptive water distribution mechanism (9) includes an inner ring (91) fixed to the top port of the inner filter cartridge (46) and an inner core (94) disposed in the inner ring (91) by a first spring (96). A rubber ring (92) is fixed to the lower side of the inner ring (91). The inner ring (91) and the inner side of the rubber ring (92) together form an inner conical surface (93). The inner core (94) has an outer conical surface (95) that cooperates with the inner conical surface (93).

7. The air filtration and deodorization system for livestock farming according to claim 1, characterized in that, The desiccant mechanism (5) includes two parallel mounting plates (51) and a plurality of water-absorbing elements (50) disposed between the two mounting plates (51); The water-absorbing component (50) includes a central rod (52) rotatably mounted between two mounting plates (51), a movable block (55) sleeved on the central rod (52) and slidable along its axial direction, a plurality of steel wire ropes (53) connected between the movable block (55) and the mounting plate (51) below, and a water-absorbing body (54) wrapped around the plurality of steel wire ropes (53). The desiccant mechanism (5) also includes a compression drive assembly for driving the multiple central rods (52) to rotate synchronously.

8. The air filtration and deodorization system for livestock farming according to claim 7, characterized in that, The extrusion drive assembly includes a second motor (583) fixed on the mounting plate (51) above, a second drive gear (582) fixed on the output end of the second motor (583), and a second transmission gear (581) fixed on the top of each of the central rods (52) and meshing with each other.

9. The air filtration and deodorization system for livestock farming according to claim 7, characterized in that, A rotating ring (551) is rotatably mounted on the upper side of the movable block (55), and a second spring (56) is fixed between the rotating ring (551) and the upper mounting plate (51).

10. The air filtration and deodorization system for livestock farming according to claim 1, characterized in that, The bottom of the box (1) is provided with a water-proof plate (7) and a drain pipe (8) connected to the area separated by the water-proof plate (7).

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