Multi-layer breeding cage and ventilation and dehumidification system thereof

Abstract

The application discloses a ventilation and dehumidification system and belongs to the field of livestock and poultry breeding. The device comprises a refrigeration unit, the inside of the refrigeration unit is fixedly provided with a refrigeration heat exchange coil pipe for cooling air flow and reducing humidity, and the device further comprises a cold air conveying pipeline and a hot and humid return air pipeline. A cold air supply outlet is installed on the cold air conveying pipeline, the cold air conveying pipeline is symmetrically arranged on the two sides of the hot and humid return air pipeline, air inlets are arranged on the two sides of the hot and humid return air pipeline, and the air flow output by the cold air supply outlet enters the air inlets through the gap between the cold air conveying pipeline and the hot and humid return air pipeline. In the application, the air flow guide plate is arranged at the bottom of the conveying belt, the hot and humid return air pipeline is centrally arranged above the middle of the cage, the cold air conveying pipeline is symmetrically arranged on the two sides of the cage, and independent air supply and return circulation is arranged on each layer. The angle of the guide plate is adjusted according to the cold air sensitivity of livestock and poultry, the adaptability of the system is improved, and vertical thermal stratification of the multi-layer cage house is eliminated.

Description

Technical Field

[0001] This invention relates to the field of livestock and poultry breeding technology, specifically to a multi-layer breeding cage and its ventilation and dehumidification system. Background Technology

[0002] Livestock and poultry farming refers to the production activities of artificially raising and breeding livestock and poultry such as pigs, cattle, sheep, chickens, and ducks. It ensures the supply of meat, eggs, and milk through large-scale and standardized models.

[0003] Currently, most mainstream multi-layer chick breeding cages adopt negative pressure ventilation systems. Multiple sets of high-efficiency exhaust fans are centrally arranged on one side of the chicken house, while the other side of the wall is fully covered with evaporative cooling curtains. Relying on the fans to continuously draw air outward, a stable negative pressure environment is formed in the sealed house. This forces all the fresh air from the outside to be cooled by the evaporative curtains before entering the house space along a preset path, thus simultaneously completing ventilation and evaporative cooling in summer.

[0004] The core facilities inside the house are mainly 4-8 layer stacked chicken cages. The bottom of each cage is fully covered with a polypropylene manure collection conveyor belt, and it is equipped with an automatic traveling feeding system and layered nipple drinking water pipelines to realize the full automation of feeding, manure removal and drinking water processes.

[0005] However, the aforementioned livestock and poultry farming still suffers from the following drawbacks: Multi-layer cage systems rely on evaporative cooling pads for temperature control, but when humidity levels inside the cages reach high levels, evaporation significantly weakens, rendering the cooling pads ineffective and causing the cage temperature to rise continuously. Simultaneously, in 4-8 layer stacked cage systems, the metabolic heat and respiration vapors from chickens naturally rise and accumulate at the top, easily forming vertical thermal stratification and humidity gradients, seriously threatening flock health and farming efficiency. This problem is particularly pronounced in 1-3 week old chicks, whose thermoregulation abilities are weak and who are susceptible to cold drafts; traditional ventilation systems struggle to provide uniform temperature control. Summary of the Invention

[0006] The purpose of this invention is to provide a multi-layer breeding cage and its ventilation and dehumidification system to solve the problem that traditional ventilation systems in the prior art are difficult to uniformly control the temperature in multi-layer breeding cages.

[0007] The technical problem to be solved by this invention can be achieved through the following technical solution: A ventilation and dehumidification system for livestock and poultry farming includes a refrigeration unit with a refrigeration heat exchange coil fixedly installed inside for cooling airflow and reducing humidity. It also includes a cold air delivery pipeline and a hot and humidified air return pipeline. The cold air delivery pipeline has a cold air outlet installed on it, symmetrically arranged on both sides of the hot and humidified air return pipeline. Air intakes are located on both sides of the hot and humidified air return pipeline. Airflow from the cold air outlet passes through the gap between the cold air delivery pipeline and the hot and humidified air return pipeline before entering the air intakes. An airflow guide plate is installed above the cold air delivery pipeline and the hot and humidified air return pipeline, using the wall effect to directionally guide the airflow. A reversing baffle is installed in front of the cold air outlet, which can guide the airflow direction as needed. A fan is installed at the output end of the hot and humidified air return pipeline, with two sets of output ends: one connected to the refrigeration heat exchange coil and the other connected to an external exhaust pipe.

[0008] Preferably, an airflow distribution adjustment component is provided in the gap between the cold air delivery pipeline and the hot and humid return air pipeline. The airflow distribution adjustment component includes multiple sets of deflecting blades rotatably disposed at the bottom of the airflow guide plate. The closer the deflecting blades are to the hot and humid return air pipeline in the horizontal position, the closer they are to the reversing baffle in the vertical position. A parallelogram linkage bracket is provided between the multiple sets of deflecting blades, so that the multiple sets of reversing baffles can be linked in parallel.

[0009] A multi-layered breeding cage also includes multiple sets of longitudinally arranged chicken cages, each set of chicken cages having a manure removal conveyor belt at the bottom; multiple sets of airflow guide plates are set at the bottom of the corresponding manure removal conveyor belts, the hot and humid return air pipeline is set above the middle of the chicken cage, and the cold air conveyor pipeline is set on both sides of the chicken cage; it also includes a synchronous air adjustment component for synchronously adjusting the deflection angle of the reversing baffle.

[0010] Preferably, the synchronous air conditioning component includes an adjusting motor, and a linkage shaft is fixedly installed at the output end of the adjusting motor. Multiple sets of transmission worm gears are fixedly installed on the linkage shaft. Each set of reversing baffles has a worm wheel fixedly installed on its end on the same axis. Each set of worm wheels meshes with the corresponding worm. Each set of worm wheels and worms has an assembly housing on its side for protecting the worm wheel and worm.

[0011] Preferably, the hot and humid return air pipeline includes a return air static pressure box, on which multiple sets of return air single pipes are fixedly installed at the bottom of the corresponding airflow guide plate, and the air intake is opened on both sides of the return air single pipe; a second delivery pipe is connected to the return air static pressure box, and the second delivery pipe is connected to the fan input end.

[0012] Preferably, a flushing pipe is fixedly installed at one end of the return air single pipe, and a sewage discharge pipe is fixedly installed at the other end. The flushing pipe outputs clean water to send the dirt inside the return air single pipe to the sewage discharge pipe.

[0013] Preferably, the return air single pipe is equipped with a self-cleaning component, which includes a cleaning motor fixedly mounted at one end of the return air single pipe, a drive rod fixedly mounted at the output end of the cleaning motor, transmission plates fixedly mounted at both ends of the drive rod, and vibration plates fixedly mounted at both ends of the return air single pipe; a cleaning rod is eccentrically slidably fitted between the two sets of transmission plates, a pipe bottom cleaning brush head is provided at the bottom of the cleaning rod, and elastic fixing sliders are fixedly mounted at both ends of the cleaning rod. The elastic fixing sliders are located between the corresponding vibration plates and transmission plates, and a drag-reducing wheel is provided on one side of the elastic fixing slider. Multiple sets of drive wheels that cooperate with the drag-reducing wheels are rotatably mounted on each set of vibration plates.

[0014] In this embodiment, a flushing pipe and a sewage discharge pipe are connected at the bottom of the return air single pipe. The flushing pipe outputs clean water to wash away sludge along the inner wall of the pipe, while sewage is discharged through the sewage discharge pipe. A valve at the end of the pipe seals during ventilation to prevent negative pressure leakage. The cleaning motor, driven by a drive rod, transmission plate, and elastic limit slider, drives the cleaning rod to rotate and reciprocate inside the pipe, while a bottom cleaning brush head thoroughly cleans the bottom of the pipe. This structure achieves self-cleaning of the pipe, preventing condensed sludge blockage that could reduce ventilation efficiency. The sewage discharge valve maintains negative pressure balance, and the cleaning components and flushing pipe work together to clean the pipe walls, extending the equipment's service life.

[0015] Preferably, the bottom cleaning brush head is a bristle brush or a silicone-coated scraper.

[0016] Preferably, each air intake inlet is fixedly provided with an anti-clogging component. The anti-clogging component includes an upward-tilting baffle provided in front of the air intake. An outlet is provided between the bottom of the upward-tilting baffle and the wall of the return air single pipe for cooperating with the bottom cleaning brush head to clean the inside. A downward-pressing guide plate is provided on the upper side of the upward-tilting baffle.

[0017] Preferably, the cold air delivery pipeline includes a gas supply static pressure box, on which multiple sets of cold air distribution pipes are fixedly installed at the bottom of corresponding airflow guide plates, and the cold air outlet is located on one side of the cold air distribution pipe. A first delivery pipe connected to the refrigeration heat exchange coil is connected to the gas supply static pressure box.

[0018] Compared with the prior art, the beneficial effects of this application are as follows: This invention constructs a ventilation and dehumidification system for multi-layer chicken coops. Multiple sets of longitudinally arranged chicken cages are equipped with a manure conveyor belt at the bottom, with airflow guide plates placed at the bottom of the conveyor belt. Hot and humidified air return pipes are centrally located above the middle of the cage, while cold air delivery pipes are symmetrically arranged on both sides of the cage. Each layer has an independent supply and return air circulation system. A synchronous air adjustment component synchronously drives the deflection of the reversing baffles on each layer, achieving centralized control by a single motor and utilizing refrigeration and heat exchange coils for active cooling and dehumidification. The reversing baffles can flip to switch between indirect and direct air supply modes to adapt to different breeding stages. An airflow distribution adjustment component uses a parallelogram linkage bracket to synchronously move multiple sets of deflecting blades, adjusting the angle according to the livestock's sensitivity to cold air: when sensitive, the reversing baffles flip up to guide airflow along the airflow guide plates to reduce direct blowing; when insensitive, they flip down to generate penetrating airflow for rapid cooling. Both components work synergistically to balance cooling and dehumidification efficiency with livestock health, improving system adaptability and eliminating vertical thermal stratification in multi-layer cages. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the operating logic structure of the ventilation and dehumidification system of the present invention; Figure 3 This is a schematic diagram of the operating effect of the airflow distribution adjustment component of the present invention; Figure 4 This is a schematic diagram of the reversing baffle structure of the present invention; Figure 5 This is a schematic diagram of the synchronous air conditioning component structure of the present invention; Figure 6 yes Figure 5 A magnified view of the structure at point A in the middle; Figure 7 This is a schematic diagram of the airflow distribution adjustment component of the present invention; Figure 8 This is a schematic diagram of the structure of the second embodiment of the present invention; Figure 9 This is a schematic diagram of the self-cleaning component structure of the present invention; Figure 10 This is a schematic diagram of the structure of the third embodiment of the present invention; Figure 11 This is a schematic diagram of the anti-clogging component structure of the present invention.

[0020] Explanation of reference numerals in the attached figures: 1. Cold air delivery pipeline; 101. Supply air static pressure box; 102. Cold air distribution pipe; 103. First delivery pipe; 104. Cold air outlet; 2. Hot and humid return air pipeline; 201. Return air static pressure box; 202. Return air single pipe; 203. Second delivery pipe; 204. Air intake; 205. Flushing pipeline; 206. Sewage discharge pipeline; 3. Airflow guide plate; 4. Reversing baffle; 5. Airflow distribution adjustment assembly; 501. Deflector blade; 502. Linkage bracket; 6. Synchronous air adjustment assembly; 601. Adjustment... 602. Motor; 603. Assembly housing; 604. Transmission worm gear; 605. Linkage shaft; 606. Worm wheel; 7. Chicken cage; 8. Manure removal conveyor belt; 9. Self-cleaning component; 901. Cleaning motor; 902. Vibrating plate; 903. Drive wheel; 904. Transmission plate; 905. Cleaning rod; 906. Elastic fixed slider; 907. Drag-reducing wheel; 908. Pipe bottom cleaning brush head; 909. Drive rod; 10. Anti-clogging component; 1001. Upward tilting baffle; 1002. Downward pressure guide plate; 1003. Discharge port. Detailed Implementation

[0021] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0022] Example 1 Current mainstream multi-layer chick cage houses use a negative pressure ventilation system. One end of the gable wall is equipped with an exhaust fan, and the other end has a wet curtain. This creates negative pressure, allowing outside air to pass through the wet curtain and cool before entering the house, achieving both ventilation and cooling. The house mainly consists of 4-8 layer stacked cages, equipped with automatic conveyor belts for manure removal, mobile feeding, and nipple drinking systems, achieving full automation. However, this system has significant drawbacks: in high humidity environments, the evaporative cooling of the wet curtains fails, causing the house temperature to rise. Furthermore, the metabolic heat and moisture from the chickens naturally rise and accumulate at the top between the multiple cages, forming vertical thermal stratification and humidity gradients, which is particularly harmful to chicks aged 1-3 weeks that have weak thermoregulation and are sensitive to cold drafts.

[0023] This embodiment provides a ventilation and dehumidification system for livestock and poultry farming, including a refrigeration unit, such as... Figure 2As shown, the refrigeration unit is used to create a low-temperature environment, similar to a refrigerator. A refrigeration heat exchange coil is fixedly installed inside the refrigeration unit to cool the airflow inside the coil and reduce humidity. A condensate cyclone separator is installed at the bottom of the refrigeration heat exchange coil to facilitate timely drainage of condensate and prevent condensate accumulation in the pipes. The device also includes a cold air delivery pipe 1 and a hot and humid return air pipe 2. A cold air outlet 104 is installed on the cold air delivery pipe 1. The cold air delivery pipe 1 is symmetrically arranged on both sides of the hot and humid return air pipe 2. Air inlets 204 are located on both sides of the hot and humid return air pipe 2. The airflow output from the cold air outlet 104 passes through the gap between the cold air delivery pipe 1 and the hot and humid return air pipe 2 and enters the air inlets 204, carrying away the rising high-temperature and high-humidity air and forming a stable local circulating airflow path. A fan is installed at the output end of the hot and humid return gas pipeline 2. The fan has two output ends: one connects to the refrigeration heat exchange coil to transport the gas collected in the hot and humid return gas pipeline 2 to the condenser for cooling and dehumidification; the other connects to an external exhaust pipe equipped with a pressure regulating and balancing valve to maintain a pressure close to that of the refrigeration heat exchange coil and discharge the collected gas. This facilitates the replenishment of fresh airflow within the aquaculture area, such as... Figure 3 As shown, the external airflow will replenish the breeding area under the action of negative pressure, and complete the replenishment of fresh air without disrupting the internal temperature and humidity stability.

[0024] An airflow guide plate 3 is installed above the cold air delivery pipeline 1 and the hot and humid return air pipeline 2. The airflow guide plate 3 uses the wall effect to guide the airflow in a specific direction, preventing the airflow from spreading and sinking randomly during delivery. A reversing baffle 4 is installed in front of the cold air outlet 104. The reversing baffle 4 can guide the airflow direction as needed to adapt to the air supply requirements of different breeding stages.

[0025] In the early stages of livestock and poultry farming, excessive airflow is generally not required. The livestock and poultry farming area can also have continuous airflow to prevent livestock and poultry from getting sick. It is only necessary to maintain a low internal temperature to reduce the stress response caused by direct cold winds.

[0026] The reversing baffle 4 is flipped up to guide the low-temperature airflow to the airflow guide plate 3. The airflow moves along the airflow guide plate 3, which will drive the external airflow into the livestock and poultry area, refresh the air in the livestock and poultry area, and at the same time, by using heat conduction or the sinking and scattering effect of low-temperature airflow, the overall temperature of the entire livestock and poultry area is reduced. Meanwhile, the low-temperature airflow will not excessively affect the health of livestock and poultry, thus avoiding the risk of livestock and poultry getting cold while ensuring the cooling and dehumidification effect.

[0027] In the later stages of livestock and poultry farming, the disease resistance of livestock and poultry increases. At the same time, a large amount of livestock and poultry excrement, along with the high humidity and other pollutants generated by daily metabolism, need to be removed in a timely manner to prevent harmful gases from accumulating in the shed and affecting the growth of livestock and poultry.

[0028] The controllable reversing baffle 4 can be periodically and intermittently tilted down, such as Figure 4 As shown, when the reversing baffle 4 is flipped down, it will guide the airflow to the livestock and poultry area. The airflow sinks and comes into direct contact with the livestock and poultry, creating an airflow path along the bottom. Then, the circulating airflow will draw away the high humidity air and other pollutants together and filter them at the refrigeration heat exchange coil, which will quickly improve the air quality in the cage.

[0029] An airflow distribution regulating component 5 is installed in the gap between the cold air delivery pipeline 1 and the hot and humid return air pipeline 2. The airflow distribution regulating component 5 includes multiple sets of deflecting blades 501 rotatably mounted at the bottom of the airflow guide plate 3. Figure 3 As shown, the closer the deflector blades 501 are horizontally to the hot and humid return gas pipe 2, the closer they are vertically to the reversing baffle 4. Parallelogram-shaped linkage brackets 502 are provided between multiple sets of deflector blades 501, allowing the multiple sets of reversing baffles 4 to be linked in parallel, such as... Figure 7 As shown, the tilting angle of the deflector blade 501 can be adjusted according to the livestock being raised, adapting to the ventilation needs of livestock of different sizes and stocking densities.

[0030] When livestock and poultry are sensitive to cold winds, the tips of the deflector blades 501 can be adjusted to rotate upwards, such as... Figure 3 (as shown in a) the deflector blades 501 guide the airflow along the airflow guide plate 3. The deflector blades 501 can guide the main cold air along the airflow guide plate 3 with the driven airflow, reducing the part of the cold air sinking. Thus, when cooling in a high humidity environment, it can reduce the impact on temperature-sensitive livestock and poultry, while cooling down, taking into account both cooling efficiency and livestock and poultry health.

[0031] When the livestock and poultry raised are not sensitive to cold winds, the tip of the deflector blade 501 can be adjusted to rotate downwards, such as... Figure 3 As shown in (b), the height of multiple sets of deflecting blades 501 increases sequentially, and the deflecting blades 501 deflect downwards, which can guide the high-temperature airflow downwards gradually and evenly, generating a strong penetrating airflow, thereby rapidly reducing the temperature. This is suitable for large and medium-sized livestock and poultry farming, and can complete the replacement of heat and humidity in the house in a short time.

[0032] This ventilation and dehumidification system is applied to the artificial breeding and raising of livestock and poultry such as pigs, cattle, sheep, chickens, and ducks. Through a large-scale and standardized approach, it increases overall controllability and solves the common problems of traditional ventilation systems failing in high-humidity environments and exhibiting vertical temperature and humidity stratification. The use of this ventilation and dehumidification system in the aforementioned specific livestock farming areas falls within the scope of this patent.

[0033] It should be emphasized that the core improvement of this embodiment lies in the following: This embodiment proposes a ventilation and dehumidification system for livestock and poultry farming based on a refrigeration unit. It utilizes a refrigeration heat exchange coil to achieve active cooling and dehumidification, solving the problem of evaporative cooling pad failure in high-humidity environments. The system adopts a symmetrical layout of cold air delivery pipe 1 and hot and humid return air pipe 2. Combined with the wall-attached effect of the airflow guide plate 3, it guides the airflow to gradually descend and cool down, forming a local circulation path to remove the high-temperature and high-humidity air from the top. The reversing baffle 4 and the airflow distribution adjustment component 5 are linked and adjustable. In the early stages of farming, the reversing baffle 4 flips upward to indirectly supply air and protect chicks; in the middle and later stages, it flips downward to enhance airflow penetration and quickly remove moisture. The deflection blade 501 angle can be adjusted according to the sensitivity of livestock and poultry to cold air, balancing cooling efficiency and livestock health, making it suitable for various types of livestock and poultry farming.

[0034] Example 2 This patent also provides a multi-layered chicken coop for raising chickens, including multiple sets of longitudinally arranged chicken cages 7, each set of chicken cages 7 having a manure conveyor belt 8 at its bottom, such as... Figure 1 As shown, multiple sets of airflow guide plates 3 are installed at the bottom of the corresponding manure removal conveyor belt 8, the hot and humid return air pipe 2 is installed above the middle of the chicken cage 7, and the cold air conveying pipe 1 is installed on both sides of the chicken cage 7, so that each layer of the cage can be completely covered by the circulating airflow. It also includes a synchronous air adjustment component 6, which is used to synchronously adjust the deflection angle of the reversing baffle 4, eliminating the need for manual adjustment of each cage and improving operating efficiency.

[0035] Multi-level poultry cages are used in specific environments and require application within multi-level poultry cages. The aforementioned device must ensure uniform temperature across each level of the cage to prevent temperature variations, such as excessively high temperatures at the top and low temperatures at the bottom. During chicken farming, chicken excrement is discharged via a manure conveyor belt 8. Each level of the multi-level poultry cage is equipped with a set of hot and humid air return pipes 2 and two sets of cold air delivery pipes 1. The two sets of cold air delivery pipes 1 output low-temperature gas, while the hot and humid air return pipes 2 collect the gas. This creates a space for cold air circulation above each level of the poultry space. The cold air sinks, thus cooling the entire structure and removing hot and humid air from the interior, maintaining a stable farming environment and ensuring that chickens on different levels are in a consistently comfortable environment.

[0036] The reversing baffle 4 and deflecting blade 501 can be adjusted according to the breeding stage to adapt to the breeding needs: When the reversing baffle 4 flips up, the airflow extends along the top of the cage and adheres to the surface of the top of the cage, naturally sinking down. This is suitable for the early brooding period, avoiding cold air blowing directly on the chicks and achieving "indirect air supply," which is perfectly suited to the weak thermoregulation characteristics of chicks aged 1-3 weeks.

[0037] When the reversing baffle 4 is flipped down, the airflow descends at an oblique angle into the flock, which is suitable for adult chickens. The airflow penetration is enhanced, maximizing the airflow disturbance and cooling effect in the cage, and quickly removing a large amount of heat, moisture and harmful gases produced by the metabolism of adult chickens.

[0038] As an optional embodiment, the synchronous air conditioning component 6 includes an adjusting motor 601, preferably a geared motor. A linkage shaft 604 is fixedly mounted at the output end of the adjusting motor 601, and multiple sets of transmission worm gears 603 are fixedly mounted on the linkage shaft 604. Each set of reversing baffles 4 has a worm wheel 605 coaxially fixed at its end, and each worm wheel 605 meshes with a corresponding worm gear 603. Each set of worm wheels 605 and worm gear 603 has a housing 602 on its side to protect them, preventing dust and lint from the breeding environment from entering the transmission structure and causing jamming.

[0039] In this embodiment, the regulating motor 601 drives the linkage shaft 604 to rotate, the linkage shaft 604 drives the worm gear 605 and worm 603 to rotate in coordination, and the worm gear 605 drives the reversing baffle 4 to rotate, thereby achieving the effect of adjusting all in a single movement, ensuring that the reversing baffles of all layers are adjusted to the same angle synchronously, and avoiding the problem of inconsistent air supply status of different layers.

[0040] As an optional embodiment, the hot and humid return air pipeline 2 includes a return air static pressure box 201. Multiple sets of return air single pipes 202 are fixedly installed on the return air static pressure box 201 and are also fixedly installed at the bottom of the corresponding airflow guide plate 3. Air inlets 204 are located on both sides of the return air single pipes 202. A second delivery pipe 203 is connected to the return air static pressure box 201 and is connected to the fan input end. The cold air delivery pipeline 1 includes a supply air static pressure box 101. Multiple sets of cold air distribution pipes 102 are fixedly installed on the supply air static pressure box 101 and are also fixedly installed at the bottom of the corresponding airflow guide plate 3. Cold air outlets 104 are located on one side of the cold air distribution pipes 102. A first delivery pipe 103 connected to the refrigeration heat exchange coil is connected to the supply air static pressure box 101.

[0041] The airflow passes sequentially through the fan, refrigeration heat exchange coil, first delivery pipe 103, air supply static pressure box 101, cold air distribution pipe 102, breeding space, return air single pipe 202, return air static pressure box 201, and second delivery pipe 203. Then, through the fan, part of the collected high-humidity gas is discharged to the environment, and part of the gas continues to participate in the circulation. While ensuring the dehumidification and cooling effect, unnecessary cooling loss is reduced, and the economic efficiency of system operation is improved.

[0042] It should be emphasized that the core improvement of this embodiment lies in integrating the ventilation and dehumidification system into a multi-layer chicken coop. Each layer is equipped with one set of hot and humidified air return pipes 2 and two sets of cold air delivery pipes 1, ensuring uniform temperature across all layers and eliminating vertical heat stratification. Airflow guide plates 3 are located at the bottom of the manure removal conveyor belt 8, with the hot and humidified air return pipes 2 in the center and the cold air delivery pipes 1 on either side, ensuring that each cage is completely covered by circulating airflow. The reversing baffles 4 and deflecting blades 501 switch according to the rearing stage: during the brooding period, they tilt upwards to achieve indirect airflow and avoid direct cold air blowing; during the adult chicken stage, they tilt downwards intermittently to enhance airflow disturbance within the cage. The system maintains stable temperature and humidity while simultaneously replenishing fresh air through two-way gas circulation and partial exhaust.

[0043] Example 3 When the return air single pipe 202 collects air, it is easy to collect dust as well. Due to the low temperature, the moisture in the air is easy to condense and adhere to the bottom of the return air single pipe 202. It combines with dust to form sludge that is difficult to clean. Long-term use can easily affect the gas delivery capacity and even cause partial blockage of the pipeline, reducing the circulation efficiency of the entire ventilation system.

[0044] To solve this problem, a flushing pipe 205 is fixedly installed at one end of the return air single pipe 202, and a drain pipe 206 is fixedly installed at the other end. The flushing pipe 205 outputs cleaning water to send the dirt inside the return air single pipe 202 to the drain pipe 206, where the initial flushing by the water flow removes most of the attached sludge. A self-cleaning component 9 is installed inside the return air single pipe 202. The self-cleaning component 9 includes a cleaning motor 901 fixedly installed at one end of the return air single pipe 202, a drive rod 909 fixedly installed at the output end of the cleaning motor 901, transmission plates 904 fixedly installed at both ends of the drive rod 909, and vibration plates 902 fixedly installed at both ends of the return air single pipe 202. A cleaning rod 905 is eccentrically slidably engaged between two sets of transmission plates 904. A pipe bottom cleaning brush head 908 is installed at the bottom of the cleaning rod 905. The pipe bottom cleaning brush head 908 is either a bristle brush or a silicone-coated scraper, ensuring effective removal of stubborn stains without scratching the inner wall of the pipe. Elastic fixing sliders 906 are fixedly installed at both ends of the cleaning rod 905. Each elastic fixing slider 906 is located between the corresponding vibrating plate 902 and transmission plate 904. A drag-reducing wheel 907 is installed on one side of each elastic fixing slider 906. Multiple sets of drive wheels 903 are rotatably mounted on each set of vibrating plates 902, cooperating with the drag-reducing wheels 907. The cooperation of these wheel sets reduces the resistance during the movement of the cleaning rod 905.

[0045] When cleaning of the return gas single pipe 202 is required, the flushing pipe 205 outputs cleaning fluid. The cleaning fluid flows along the return gas single pipe 202 and finally enters the drain pipe 206. The drain pipes 206 are interconnected, discharging wastewater into the sewer. A valve is installed at the end to maintain a seal during negative pressure collection, preventing air leakage under normal ventilation conditions that could disrupt the internal pressure balance of the system. The return gas single pipe 202 is connected to the return gas static pressure box 201 at the top, preventing cleaning fluid from entering the static pressure box and the downstream fan and refrigeration heat exchange coil, thus preventing cleaning fluid from entering the circulation system and affecting equipment operation.

[0046] Simultaneously, the cleaning motor 901 drives the drive rod 909 to rotate, which in turn drives the drive wheel 903 to rotate. The drive wheel 903 then drives the cleaning rod 905 and the bottom cleaning brush head 908 to rotate, cleaning the bottom of the return air single pipe 202. The cleaning rod 905 drives the elastic fixed slider 906 to reciprocate between the two sets of vibrating plates 902. The drive wheel 903 and the drag-reducing wheel 907 reduce resistance, allowing the bottom cleaning brush head 908 to rotate and reciprocate back and forth at the bottom of the return air single pipe 202, thus ensuring the cleaning effect and keeping the inner wall of the pipe clean at all times, maintaining stable ventilation efficiency over a long period.

[0047] It should be emphasized that the core improvement of this embodiment lies in addressing the problem of sludge formation caused by the combination of low-temperature condensed moisture and dust in the return gas single pipe 202, which easily clogs the pipe. A flushing pipe 205 and a sewage discharge pipe 206 are installed to achieve water flushing and sewage discharge, working in conjunction with the internal self-cleaning component 9 to complete deep cleaning. The self-cleaning component 9 is driven by a cleaning motor 901, which, through a linkage mechanism of a transmission plate 904, a drive wheel 903, and an elastic limit slider, drives the cleaning rod 905 to rotate and reciprocate. The bottom cleaning brush head 908 performs rotational and reciprocating cleaning of the bottom of the pipe, keeping the inner wall of the pipe clean. The valve at the end of the sewage discharge pipe 206 seals during negative pressure collection to prevent air leakage from disrupting the system pressure balance and maintaining stable ventilation efficiency over the long term.

[0048] Example 4 The return air pipe 202 is prone to accumulating some lint. This lint is drifted and splashed out by the cleaning brush head 908 at the bottom of the pipe and the water flow, which may block part of the air intake 204, affecting the return flow effect of the air intake 204 and disrupting the original uniform airflow distribution.

[0049] To address this issue, an anti-clogging component 10 is fixedly installed inside each air intake 204. The anti-clogging component 10 includes an upward-tilting baffle 1001 located in front of the air intake 204. An outlet 1003 is located between the bottom of the upward-tilting baffle 1001 and the wall of the return air single pipe 202, which is used to cooperate with the bottom cleaning brush head 908 to clean the inside. A downward-pressing guide plate 1002 is located on the upper side of the upward-tilting baffle 1001, thus achieving the anti-clogging function from both the airflow path and physical obstruction dimensions.

[0050] When the airflow enters the return air single pipe 202 through the air intake 204, it will first come into contact with the upward baffle 1001. Guided by the upward baffle 1001, it will then come into contact with the downward guide plate 1002. The downward guide plate 1002 will guide the airflow downward, so that dust particles and lint can come into contact with the bottom wet contact surface under the impact of the airflow and gravity, thereby locking them at the bottom and reducing the difficulty of handling the subsequent refrigeration heat exchange coil.

[0051] During cleaning, the downward guide plate 1002 can prevent cleaning fluid from splashing out, and the upward baffle 1001 can prevent lint from drifting and splashing out under the action of the bottom cleaning brush head 908 and water flow, thus preventing partial blockage of the air intake 204. If some lint accumulates inside the upward baffle 1001, it can be swept out from the outlet 1003 by the bottom cleaning brush head 908, avoiding long-term accumulation and blockage of the airflow passage, and keeping the air intake 204 in a smooth air intake state for a long time.

[0052] It should be emphasized that the core improvement of this embodiment lies in addressing the problem of lint drifting and splashing out and clogging the air intake 204 during the cleaning of the return air single pipe 202. An anti-clogging component 10 is installed inside each air intake 204, consisting of an upward-sloping baffle 1001 and a downward-pressing guide plate 1002. The upward-sloping baffle 1001 blocks lint from splashing out and cooperates with the outlet 1003, facilitating the bottom cleaning brush head 908 to sweep away accumulated lint. The downward-pressing guide plate 1002 guides the incoming airflow downwards, causing dust and lint to settle and lock onto the bottom wetted surface under the impact of airflow and gravity, reducing the burden on the downstream refrigeration heat exchange coil. The two guide plates work together to prevent clogging from both physical obstruction and airflow path perspectives, ensuring the long-term unobstructed flow of the air intake 204.

[0053] Working Principle: During operation, the refrigeration unit starts running, and the internal refrigeration heat exchange coil begins cooling, preparing for subsequent airflow cooling and dehumidification. The fan operates, simultaneously generating two airflow paths: one path transports the gas collected in the hot and humid return air pipe 2 to the refrigeration heat exchange coil for cooling and dehumidification; the other path is discharged externally through the exhaust pipe after pressure regulation and balancing valve, creating a negative pressure state within the breeding area. Under this negative pressure, fresh external air naturally replenishes the breeding space, maintaining a relatively stable temperature and humidity within the area. Simultaneously, the low-temperature airflow, cooled and dehumidified by the refrigeration heat exchange coil, is transported through the cold air delivery pipe 1 to the cold air outlet 104, and then output from the cold air outlet 104 into the space above the breeding area.

[0054] In the early stages of breeding, the reversing baffle 4 is in the upward-facing position. The low-temperature airflow output from the cold air outlet 104 is guided by the reversing baffle 4 to the surface of the airflow guide plate 3, where it flows directionally downwards along the surface of the airflow guide plate 3 using the wall adhesion effect, avoiding disorderly diffusion. The deflecting blades 501 are flipped upwards at their tips, guiding the main cold air and driving the driven airflow along the airflow guide plate 3, reducing direct cold air blowing. As the airflow extends along the airflow guide plate 3, external air enters the breeding area to refresh the air, and at the same time, the overall temperature of the breeding area is gradually reduced by utilizing heat conduction and the natural sinking and scattering effect of the low-temperature airflow. During this stage, the airflow does not directly contact the livestock and poultry, avoiding stress reactions caused by direct cold air blowing, and protecting chicks with weak thermoregulation ability while ensuring the cooling and dehumidification effect.

[0055] During the later stages of breeding, the reversing baffle 4 is periodically and intermittently tilted downwards. The low-temperature airflow is guided by the reversing baffle 4 at an oblique angle into the breeding area, and the airflow sinks and comes into direct contact with the livestock and poultry, creating a flow airflow path along the bottom.

[0056] If necessary, the tips of the deflecting blades 501 can also be flipped downwards synchronously. Multiple sets of deflecting blades 501 increase in height sequentially and deflect downwards, gradually and evenly guiding the high-temperature airflow downwards to generate a strong penetrating airflow. The circulating airflow picks up livestock and poultry excrement and the high-temperature, high-humidity air and pollutants produced by metabolism, and draws them away through the air inlets 204 on both sides of the hot and humid return air pipe 2. The high-temperature, high-humidity gas enters the return air static pressure box 201 through the hot and humid return air pipe 2, and is then transported to the fan through the second conveying pipe 203. Part of it is cooled and dehumidified by the refrigeration heat exchange coil and re-enters the circulation, while the rest is discharged through the exhaust pipe, quickly improving the air quality inside the cage.

[0057] A gap is formed between the low-temperature airflow output from the cold air delivery pipe 1 and the hot and humid return air pipe 2. After passing through this gap, the low-temperature airflow enters the air intake 204, continuously carrying away the rising high-temperature and high-humidity air. The airflow guide plate 3 directionally guides the airflow within the gap, preventing disorderly diffusion. The gas collected by the hot and humid return air pipe 2 is split by a fan. One path enters the refrigeration heat exchange coil for cooling and dehumidification, and the condensate cyclone separator at the bottom of the refrigeration heat exchange coil promptly discharges the condensate to prevent accumulation. The other path is discharged through a pressure regulating and balancing valve to maintain system pressure balance. The continuous discharge from the exhaust pipe maintains negative pressure in the breeding area, allowing fresh external air to continuously replenish the air and completing air renewal without disrupting the internal temperature and humidity stability.

[0058] In the multi-layered breeding cages, each layer of the breeding space is equipped with an independent set of cold air delivery pipes 1 and hot and humid air return pipes 2. When the regulating motor 601 is started, it drives the linkage shaft 604 to rotate. Multiple sets of transmission worm gears 603 on the linkage shaft 604 sequentially drive the worm wheels 605 at the ends of the reversing baffles 4 of each layer to rotate synchronously. All reversing baffles 4 and deflecting blades 501 of all layers are adjusted to the same angle in a single movement, without the need for manual operation layer by layer. Cold air from each layer is output through the cold air distribution pipe 102 and collected synchronously by the return air single pipe 202, ensuring that a cold air circulation space is formed above each layer of the breeding space. The cold air sinks to achieve uniform cooling of the entire layer, eliminates the temperature difference between the upper and lower layers, and keeps the chickens on different layers in a consistent and comfortable environment.

[0059] After the return air pipe 202 has been running for a period of time, sludge formed by dust and condensed moisture accumulates inside the pipe, and the system enters the cleaning process. Cleaning water output from the flushing pipe 205 flows along the return air pipe 202, flushing away most of the attached sludge, and the wastewater is discharged through the drain pipe 206. At the same time, the cleaning motor 901 starts, driving the drive rod 909 to rotate. The transmission plates 904 at both ends of the drive rod 909 drive the cleaning rod 905 through eccentric sliding cooperation. The bottom cleaning brush head 908 at the bottom of the cleaning rod 905 rotates while reciprocating between the elastic fixed slider 906 and the vibrating plate 902 at the bottom of the return air pipe 202. The drag-reducing wheel 907 and the drive wheel 903 cooperate to reduce the movement resistance and perform deep cleaning of the bottom of the pipe. During the cleaning process, the upward-sloping baffle 1001 inside the air intake 204 prevents lint from drifting and splashing out under the action of cleaning fluid and the bottom cleaning brush head 908. The downward-pressing guide plate 1002 guides the airflow downward, causing dust and lint to settle and be locked on the bottom wet surface under the combined action of airflow impact and gravity. The dust and lint are then swept out of the pipe through the outlet 1003 in conjunction with the bottom cleaning brush head 908, preventing blockage of the air intake 204 and ensuring long-term unobstructed airflow and uniform air distribution. After cleaning, the connection between the upper part of the return air single pipe 202 and the return air static pressure box 201 prevents cleaning fluid from entering the downstream equipment, and the system resumes normal ventilation circulation operation.

[0060] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed application.

Claims

1. A ventilation and dehumidification system for livestock and poultry farming, comprising a refrigeration unit, wherein a refrigeration heat exchange coil is fixedly installed inside the refrigeration unit for cooling the airflow and reducing humidity, characterized in that: It also includes a cold air delivery pipeline (1) and a hot and humid return air pipeline (2). A cold air outlet (104) is installed on the cold air delivery pipeline (1). The cold air delivery pipeline (1) is symmetrically arranged on both sides of the hot and humid return air pipeline (2). An air intake (204) is provided on both sides of the hot and humid return air pipeline (2). The airflow output from the cold air outlet (104) enters the air intake (204) after passing through the gap between the cold air delivery pipeline (1) and the hot and humid return air pipeline (2). An airflow guide plate (3) is provided above the cold air delivery pipeline (1) and the hot and humid return air pipeline (2). The airflow guide plate (3) uses the wall attachment effect to guide the airflow in a direction. A reversing baffle (4) is provided in front of the cold air outlet (104). The reversing baffle (4) can guide the airflow direction as needed. The output end of the hot and humid return gas pipeline (2) is equipped with a fan. The fan has two sets of output ends, one set is connected to the refrigeration heat exchange coil, and the other set is connected to the external exhaust pipe.

2. The livestock and poultry breeding ventilation and dehumidification system as described in claim 1, characterized in that, An airflow distribution adjustment component (5) is provided in the gap between the cold air delivery pipeline (1) and the hot and humid return air pipeline (2). The airflow distribution adjustment component (5) includes multiple deflection blades (501) that are rotatably arranged at the bottom of the airflow guide plate (3). The closer the deflection blades (501) are to the hot and humid return air pipeline (2) in the horizontal position, the closer they are to the reversing baffle (4) in the vertical position. A parallelogram-shaped linkage bracket (502) is provided between multiple sets of deflection blades (501), so that multiple sets of reversing baffles (4) can be linked in parallel.

3. A multi-layered breeding cage, characterized in that, The system includes the ventilation and dehumidification system as described in any one of claims 1-2, and also includes multiple sets of longitudinally arranged chicken cages (7), each set of chicken cages (7) having a manure conveyor belt (8) at the bottom; Multiple sets of airflow guide plates (3) are set at the bottom of the corresponding manure removal conveyor belt (8), the hot and humid return air pipeline (2) is set above the middle of the chicken cage (7), and the cold air conveying pipeline (1) is set on both sides of the chicken cage (7). It also includes a synchronous air adjustment component (6) for synchronously adjusting the deflection angle of the reversing baffle (4).

4. A multi-layer breeding cage as described in claim 3, characterized in that, The synchronous air conditioning component (6) includes an adjusting motor (601), and a linkage shaft (604) is fixedly installed at the output end of the adjusting motor (601). Multiple sets of transmission worm gears (603) are fixedly installed on the linkage shaft (604). Each set of reversing baffles (4) is coaxially fixed with a worm gear (605) at its end. Each set of worm gears (605) meshes with the corresponding worm (603). Each set of worm gears (605) and worm (603) is provided with an assembly housing (602) on its side to protect the worm gears (605) and worm (603).

5. A multi-layer breeding cage as described in claim 4, characterized in that, The hot and humid return air pipeline (2) includes a return air static pressure box (201), and multiple sets of return air single pipes (202) are fixedly installed on the return air static pressure box (201) and fixedly installed at the bottom of the corresponding airflow guide plate (3). The air intake (204) is opened on both sides of the return air single pipe (202). The return air static pressure box (201) is connected to a second delivery pipe (203), which is connected to the input end of the fan.

6. A multi-layer breeding cage as described in claim 5, characterized in that, One end of the return air single pipe (202) is fixedly equipped with a flushing pipe (205), and the other end is fixedly equipped with a sewage discharge pipe (206). The flushing pipe (205) outputs clean water to send the dirt inside the return air single pipe (202) to the sewage discharge pipe (206).

7. A multi-layer breeding cage as described in claim 6, characterized in that, The return air single pipe (202) is equipped with a self-cleaning component (9). The self-cleaning component (9) includes a cleaning motor (901) fixedly installed at one end of the return air single pipe (202). A drive rod (909) is fixedly installed at the output end of the cleaning motor (901). A transmission plate (904) is fixedly installed at both ends of the drive rod (909). A vibration plate (902) is fixedly installed at both ends of the return air single pipe (202). A cleaning rod (905) is eccentrically slidably fitted between the two sets of transmission plates (904). A tube bottom cleaning brush head (908) is provided at the bottom of the cleaning rod (905). An elastic fixing slider (906) is fixedly provided at both ends of the cleaning rod (905). The elastic fixing slider (906) is located between the corresponding vibration plate (902) and transmission plate (904). A drag-reducing wheel (907) is provided on one side of the elastic fixing slider (906). Multiple sets of drive wheels (903) that cooperate with the drag-reducing wheel (907) are rotatably provided on each set of vibration plates (902).

8. A multi-layer breeding cage as described in claim 7, characterized in that, The bottom cleaning brush head (908) is a brush or a silicone-coated scraper.

9. A multi-layer breeding cage as described in claim 7, characterized in that, Each air intake (204) is fixedly provided with an anti-blocking component (10) inside. The anti-blocking component (10) includes an upward-tilting baffle (1001) provided in front of the air intake (204). An outlet (1003) is provided between the bottom of the upward-tilting baffle (1001) and the wall of the return air pipe (202) for use in conjunction with the bottom cleaning brush head (908) to complete the internal cleaning. A downward-pressing guide plate (1002) is provided on the upper side of the upward-tilting baffle (1001).

10. A multi-layer breeding cage as described in claim 7, characterized in that, The cold air delivery pipeline (1) includes a gas delivery static pressure box (101), and multiple sets of cold air distribution pipes (102) are fixedly installed on the gas delivery static pressure box (101) and fixedly installed at the bottom of the corresponding airflow guide plate (3). The cold air outlet (104) is located on one side of the cold air distribution pipe (102). The gas delivery static pressure box (101) is connected to a first delivery pipe (103) that is connected to the refrigeration heat exchange coil.

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