A low-energy precision ventilation system for pigsties

Abstract

This application relates to a low-energy precision ventilation system for pigsties, belonging to the technical field of livestock breeding equipment. The low-energy precision ventilation system for pigsties includes an air outlet device, a movable component, and a control mechanism; the air outlet device is suspended inside the feeding station; the movable component is pushed by pigs entering the feeding station to determine whether there are pigs inside; the control mechanism is used to control the air outlet device to switch between an on and off state based on whether there are pigs inside the feeding station; wherein, the air outlet device directs airflow towards the shoulders and necks of pigs eating at the feed trough in the feeding station. The low-energy precision ventilation system for pigsties provided in this application can reduce the body temperature of pigs during the feeding process.

Description

Technical Field

[0001] This application relates to the field of livestock breeding equipment technology, and more specifically, to a low-energy precision ventilation system for pigsties. Background Technology

[0002] Pigsties are buildings specifically designed for raising pigs. To meet the growth needs of pigs, pigsties should have good ventilation, lighting, insulation, and heat protection. Ventilation in pigsties has a significant impact on the health and production performance of pigs. Proper ventilation effectively introduces fresh air into the pigsty and removes stale air containing microorganisms, dust, harmful gases, and water vapor, thus providing a comfortable living environment. Ventilation also regulates and controls the temperature and humidity in the pigsty, which is crucial for providing a suitable growth environment.

[0003] Existing ventilation systems can maintain a suitable ambient temperature by controlling the overall airflow within the pigsty. However, feeding causes pigs' body temperature to rise. When the body temperature rises above the pigs' comfort range, it affects their appetite and causes heat stress, reducing feed intake and impacting their growth rate. Increased body temperature also makes pigs prone to sweating. When the ventilation system causes rapid airflow within the pigsty, the sweat on the pigs' skin evaporates quickly, leading to a rapid drop in body temperature. These fluctuations in body temperature increase the risk of disease in pigs. Summary of the Invention

[0004] The purpose of this application is to provide a low-energy precision ventilation system for pigsties that can reduce the body temperature of pigs during feeding, thereby improving the aforementioned problems.

[0005] This application is achieved through the following technical solution:

[0006] In some embodiments, this application provides a low-energy precision ventilation system for pig houses, used to blow air onto pigs feeding in a feeding station. The low-energy precision ventilation system for pig houses includes an air outlet device, a movable part, and a control mechanism. The air outlet device is suspended inside the feeding station. The movable part is pushed by pigs entering the feeding station to determine whether there are pigs in the feeding station. The control mechanism is used to control the air outlet device to switch between an on and off state according to whether there are pigs in the feeding station. The air outlet device blows air towards the shoulders and necks of pigs feeding at the feed trough in the feeding station.

[0007] In the technical solution of this application embodiment, the movable part is used to be pushed by pigs entering the feeding station to determine whether there are pigs in the feeding station; the control mechanism is used to control the air outlet device to switch between an on and off state according to whether there are pigs in the feeding station. When there are no pigs in the feeding station, the air outlet device is in the off state. When there are pigs in the feeding station, the air outlet device will turn on under the control of the control mechanism, shortening the working time of the air outlet device, thereby reducing the energy consumption of the low-energy precision ventilation system for pig houses provided in this application, which is energy-saving and environmentally friendly; when pigs eat in the feeding station, their body temperature rises. The air outlet device blows air towards the shoulders and necks of pigs eating at the feed troughs in the feeding station, and the air carries away the heat from the pigs' body surface, lowering their body temperature, thereby avoiding the decrease in appetite and heat stress caused by the rise in temperature, and ensuring the health of the pigs. Furthermore, lowering body temperature can reduce the risk of pigs sweating while eating, thereby reducing the risk of illness caused by rapid temperature fluctuations due to rapid sweat evaporation. The neck and shoulder area of ​​a pig has a rich blood supply, and the temperature rise is particularly noticeable in this area when the pig's body temperature increases. Directing the airflow to the neck and shoulder area can cool the pig's surface with a relatively small air volume. Firstly, the airflow volume of the airflow device is directly proportional to the power required to operate it; a smaller airflow volume means less power is needed, reducing energy consumption. Secondly, the pig's face is more sensitive than other parts of its body; avoiding direct airflow to the face reduces the risk of the pig being startled and stressed by sudden wind exposure.

[0008] In some embodiments, the air outlet device is vertically and flexibly disposed in the feeding station, and the control mechanism includes a transmission assembly. A movable member is vertically and flexibly disposed in the feeding station, and the transmission assembly is disposed between the movable member and the air outlet device. The movable member is closer to the entrance of the feeding station than the air outlet device. The movable member is used to be lifted up by pigs entering the feeding station, and the transmission assembly guides the air outlet device to rise synchronously according to the size information of the rise of the movable member so that the air outlet device is directly facing the pig's shoulder and neck.

[0009] In the technical solution of this application embodiment, even pigs raised in the same pigsty will have differences in body size. The larger pigs are taller than ordinary pigs. The movable part is lifted by the pigs entering the feeding station and rises a certain distance according to the height of the pigs. The transmission component guides the air outlet device to rise synchronously according to the size information of the rising movable part, so that the height of the air outlet device can be adjusted according to the height of the pigs entering the feeding station. This allows pigs of different sizes to rely on the air outlet device to reduce their body temperature when entering the feeding station to eat. This makes the low-energy precision ventilation system for pigsties provided in this application able to effectively and stably reduce the body temperature of pigs when eating.

[0010] In some embodiments, the movable part is provided with a limit block, and the movable part slides and engages with the chute of the feeding station through the limit block, and the movable part moves up and down along the chute.

[0011] In the technical solution of this application embodiment, the movable part slides with the feeding station through the limiting block. The sliding block restricts the lifting direction of the movable part when it is lifted by the pig, reducing the risk of the movable part leaving the feeding station due to the movement of the pig, and improving the structural stability of the low-energy precision ventilation system for pig houses provided in this application.

[0012] In some embodiments, the movable part includes a mating part and a supporting part, the mating part contacting and slidingly engaging with the feeding station, and the supporting part having a supporting surface for contacting pigs entering the feeding station.

[0013] In the technical solution of this application embodiment, the support part has a support surface for contacting the pig entering the feeding station, so that the contact area between the movable part and the pig's back skin is large. When the pig lifts the movable part, the weight of the movable part can be distributed to the contact point between the support surface and the pig's back, thereby reducing the risk of the pig's back skin being injured due to the force applied to the pig by the movable part being too concentrated.

[0014] In some embodiments, the movable part further includes a guide portion disposed on the side of the support portion away from the air outlet device. The guide portion is tilted in the direction away from the pig entering the feeding station, and the surface of the guide portion facing the pig entering the feeding station is an arc surface that smoothly transitions with the support surface.

[0015] In the technical solution of this application embodiment, the guide part is set on the side of the support part away from the air outlet device. When the pig in the pen moves towards the feed trough in the feeding station, the pig's head will first contact the guide part. The guide part is raised in the direction away from the pig entering the feeding station. The surface of the guide part facing the pig entering the feeding station is an arc surface that smoothly transitions with the support surface, so that the pig's head first contacts the surface of the guide part facing the pig entering the feeding station, and then contacts the support part through the guide part, gradually lifting the movable part.

[0016] In some embodiments, the transmission assembly includes a pull rope and a plurality of pulleys, the pulleys being rotatably disposed at the feeding station, the two ends of the pull rope being connected to a movable part and an air outlet device respectively, and the pull rope being supported by the plurality of pulleys to pull the air outlet device up and down.

[0017] In the technical solution of this application embodiment, the two ends of the pull rope are respectively connected to the movable part and the air outlet device. The pull rope is supported by multiple pulleys to pull the air outlet device up and down. The movement between the movable part and the air outlet device is linked by the pull rope. The structure is simple, the transmission effect is intuitive and effective, and the difficulty of use and maintenance is low.

[0018] In some embodiments, the air outlet device is connected to the air intake device via an air pipe. The portion of the air pipe that connects to the air outlet device is a flexible hose. The transmission assembly also includes an elastic element connected to the feeding station and the air outlet device. The elastic element is in a stretched state. The movable element pulls the air outlet device down via a pull rope, and the elastic element pulls the air outlet device up.

[0019] In the technical solution of this application embodiment, the air outlet device is connected to the air intake device through an air pipe. The part of the air pipe connecting the air outlet device is a flexible hose. When the air outlet device is raised or lowered, the air pipe can also bend or straighten accordingly, so that the air outlet device can continue to blow air to the pigs in the feeding station even after it has moved. The transmission component also includes an elastic element, which is connected to the feeding station and the air outlet device. The elastic element is in a stretched state, and the elastic force applied by the elastic element to the air outlet device is vertically upward. Meanwhile, the resultant force of the weight applied by the movable element to the air outlet device through the pull rope and the weight of the air outlet device is vertically downward. When there are no pigs in the feeding station, the air outlet device is at its initial height. At this time, the elastic force applied by the elastic element to the air outlet device and the resultant force of the weight of the air outlet device are vertically downward. The sum of the forces and the weight of the moving parts is equal, allowing the air outlet device to remain stationary within the feeding station. When the moving parts are lifted by the pig, the tension at the end connected to the moving parts becomes relaxed, and the total weight loses the weight of the moving parts. At this time, the elastic force is greater than the total weight, and the air outlet device rises under the pull of the elastic force until the tension is tightened again. The air outlet device then turns on and remains stationary. The elastic force of the elastic parts is equal to the total weight. At this time, because the stretching distance of the elastic parts is shortened, the elastic force of the elastic parts decreases. The total weight is equal to the weight of the air outlet device and part of the weight of the moving parts, preventing the weight of the moving parts from acting entirely on the pig's back and reducing the risk of skin damage caused by excessive compression of the pig's back by the moving parts.

[0020] In some embodiments, the air outlet device slides along a slide rail inside the feeding station, and the air outlet device moves up and down along the slide rail; the control mechanism also includes an electric contact piece, and both the feeding station and the air outlet device are provided with electric contact pieces. The electric contact piece on the feeding station is connected to a power source. The raising and lowering of the air outlet device causes the electric contact piece on the air outlet device and the electric contact piece on the feeding station to contact or separate, so that the air outlet device is energized to turn on or de-energized to turn off.

[0021] In the technical solution of this application embodiment, the air outlet device slides in conjunction with the slide rail inside the feeding station. The feeding station restricts the lifting direction of the air outlet device through the slide rail, reducing the risk of the air outlet device detaching from the feeding station and improving the connection stability between the low-energy precision ventilation system for pig houses provided in this application and the feeding station. The control mechanism also includes electrical contacts. Both the feeding station and the air outlet device are equipped with electrical contacts. The electrical contacts on the feeding station are connected to the power supply. When the air outlet device is at its initial height without any pigs in the feeding station, the electrical contacts on the air outlet device and the electrical contacts on the feeding station are misaligned, causing the air outlet device to be de-energized and shut down. When the air outlet device rises, the electrical contacts on the air outlet device and the electrical contacts on the feeding station come into contact, allowing current to flow through the two electrical contacts into the air outlet device, thus turning on the air outlet device. The air outlet device is controlled by electrical contacts, which is simple in structure and stable in effect. The size of the electrical contacts on the air outlet device is smaller than that on the feeding station. Before the electrical contacts on the air outlet device and the feeding station device make full contact, the contact area between the electrical contacts on the air outlet device and the feeding station device gradually increases. The contact area between the two electrical contacts is the current carrying area. The larger the contact area between the two electrical contacts, the larger the current input to the air outlet device. Before reaching the rated power, the working efficiency of the air outlet device is directly proportional to the magnitude of the input current. Specifically, the larger the current, the stronger the airflow from the air outlet device. This allows the airflow to gradually increase from small to large during the upward process of the air outlet device, reducing the risk of sudden strong winds startling and stressing the pigs entering the feeding station.

[0022] In some embodiments, there are multiple air outlet devices and multiple control mechanisms. Each air outlet device corresponds to one control mechanism. The multiple air outlet devices are arranged along the extension direction of the feed trough in the feeding station, and each feed trough corresponds to the position of at least one air outlet device.

[0023] In the technical solution of this application embodiment, there are also multiple control mechanisms. Multiple air outlet devices correspond one-to-one with multiple control mechanisms. Multiple air outlet devices are arranged along the extension direction of the feed trough in the feeding station. The low-energy precision ventilation system for pig houses provided by this application can enable only the air outlet devices in the area directly opposite where pigs are eating to be turned on, thereby achieving precise ventilation and reducing the energy consumption required for ventilation.

[0024] In some embodiments, the air outlet blows air obliquely from the back of the neck toward the hind legs of the pig located in the feeding station.

[0025] In the technical solution of this application embodiment, the air outlet device blows air obliquely towards the pigs in the feeding station, so that the air outlet range of the air outlet device can cover most of the pig's body, thereby improving the cooling effect on the pig's body.

[0026] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the external structure of a low-energy precision ventilation system for feeding stations and pigsties provided in some embodiments of this application;

[0029] Figure 2 This is a schematic diagram of the overall structure of a low-energy precision ventilation system for pigsties provided in some embodiments of this application;

[0030] Figure 3 A front view of a low-energy precision ventilation system for feeding stations and pigsties provided in some embodiments of this application;

[0031] Figure 4 for Figure 3 Sectional view at point AA;

[0032] Figure 5 Side view of a low-energy precision ventilation system for feeding stations and pig houses provided in some embodiments of this application.

[0033] Figure 6 for Figure 5 Sectional view at point BB.

[0034] Icons: 1-Feeding station; 10-Feeding trough; 11-Slide rail; 2-Air outlet; 20-Air pipe; 3-Moving part; 30-Limiting block; 31-Matching part; 32-Supporting part; 320-Supporting surface; 33-Guide part; 4-Control mechanism; 40-Transmission assembly; 400-Pull rope; 401-Pulley; 402-Elastic part; 41-Electrical contact plate. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0037] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0038] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0039] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0040] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0041] According to some embodiments of this application, optionally, such as Figures 1-5As shown, this application provides a low-energy precision ventilation system for pig houses, used to blow air onto pigs eating in a feeding station 1. The low-energy precision ventilation system for pig houses includes an air outlet device 2, a movable part 3, and a control mechanism 4. The air outlet device 2 is suspended inside the feeding station 1. The movable part 3 is pushed by pigs entering the feeding station 1 to determine whether there are pigs in the feeding station 1. The control mechanism 4 is used to control the air outlet device 2 to switch between an on and off state according to whether there are pigs in the feeding station 1. The air outlet device 2 blows air towards the shoulders and necks of pigs eating at the feed trough 10 in the feeding station 1.

[0042] The air outlet device 2 can be movably installed inside the feeding station 1. By changing the position of the air outlet device 2, the direction of air blowing from the air outlet device 2 into the feeding station 1 can be changed to meet the cooling needs of pigs of different sizes.

[0043] Since bacteria can easily grow in pigsties, they need to be cleaned and disinfected frequently. The air outlet device 2 can be detachably installed in the feeding station 1, which makes it easy to remove the air outlet device 2 from the feeding station 1 for cleaning, avoiding the growth of bacteria or viruses by dirt adhering to the air outlet of the air outlet device and reducing the maintenance difficulty of the air outlet device 2.

[0044] The active component 3 can be a contact sensor that obtains information about whether there are pigs in the feeding station 1 by making physical contact with the pigs entering the feeding station 1.

[0045] The distance between the opening of the feeding station 1 and the trough 10 is at least sufficient for a pig of normal size to extend most of its body into the feeding station 1 to eat.

[0046] When a pig of normal size enters feeding station 1, its head enters first, followed by its shoulders and body. Only when the pig's shoulders enter feeding station 1 will the moving part 3 be activated to open the air outlet device 2. This prevents the air outlet device 2 from being triggered to blow air into feeding station 1 when no pigs are entering while the pigs are lingering at the opening, reducing the risk of energy waste caused by the air outlet device 2. On the other hand, it prevents the air outlet device from blowing air into the pigs' faces when they begin to enter feeding station 1, reducing the risk of pigs being startled by sudden wind and leaving feeding station 1 or even experiencing stress.

[0047] The movable component 3 is pushed by pigs entering the feeding station 1 to determine whether there are pigs in the feeding station 1; the control mechanism 4 is used to control the air outlet device 2 to switch between an on and off state according to whether there are pigs in the feeding station 1. When there are no pigs in the feeding station 1, the air outlet device 2 is in the off state. When there are pigs in the feeding station 1, the air outlet device 2 will turn on under the control of the control mechanism 4, shortening the working time of the air outlet device 2, thereby reducing the energy consumption of the low-energy precision ventilation system for pigsties provided in this application, which is energy-saving and environmentally friendly; when pigs eat in the feeding station 1, their body temperature rises. The air outlet device 2 blows air towards the shoulders and necks of the pigs eating at the feed trough 10 in the feeding station 1, and the air carries away the heat from the surface of the pigs in the feeding station 1, thereby lowering the pigs' body temperature, thus avoiding the decrease in appetite and heat stress caused by the rise in temperature, and ensuring the health of the pigs. Lowering the external body temperature can also reduce the risk of pigs sweating while eating, thereby reducing the risk of illness caused by rapid evaporation of sweat and sudden temperature changes. The pig's neck and shoulder area has a rich blood supply, and the temperature rise in this area is particularly noticeable when the pig's body temperature increases. The air outlet 2 can precisely direct airflow to the pig's neck and shoulder area, achieving cooling of the pig's body surface with a small air volume. On the one hand, the air volume of the air outlet 2 is directly proportional to the power required to drive it. The smaller the air volume used by the air outlet 2, the less power is required to drive it, reducing the energy consumption of the air outlet 2. On the other hand, the pig's face is more sensitive than other parts of the pig. By avoiding the pig's face when blowing air, the air outlet 2 can reduce the risk of the pig being startled and stressed by sudden wind blowing on its face.

[0048] According to some embodiments of this application, optionally, such as Figures 2-5 As shown, the air outlet device 2 is vertically and flexibly installed in the feeding station 1. The control mechanism 4 includes a transmission assembly 40 and a movable part 3 is vertically and flexibly installed in the feeding station 1. The transmission assembly 40 is located between the movable part 3 and the air outlet device 2. The movable part 3 is closer to the entrance of the feeding station 1 than the air outlet device 2. The movable part 3 is used to be lifted up by pigs entering the feeding station 1. The transmission assembly 40 guides the air outlet device 2 to rise synchronously according to the size information of the rise of the movable part 3 so that the air outlet device 2 is directly facing the pig's shoulder and neck.

[0049] The air outlet device 2 can fit against the inner wall of the feeding station 1 and move up and down along the inner wall of the feeding station 1 under the guidance of the transmission component 40. The movement direction and deflection of the air outlet device 2 are restricted by the inner wall of the feeding station 1, so that the air outlet of the air outlet device 2 can be kept facing the pigs entering the feeding station 1, thereby improving the structural stability of the low-energy precision ventilation system for pig houses provided in this application, and thus ensuring that the working effect of the low-energy precision ventilation system for pig houses provided in this application remains stable.

[0050] When the length of the feeding station 1 is sufficient to allow most of a pig's body to enter, the movable part 3 can be set at the opening of the feeding station 1. When the pig enters the feeding station 1, it will push up the movable part 3 to open the air outlet 2. During the feeding process, the movable part 3 will be continuously pushed up by the pig to keep it open. When the air outlet 2 is open, the movable part 3 and the pig's body will block the opening of the feeding station 1 together, reducing the chance of the air blown out by the air outlet 2 entering the pig pen through the opening of the feeding station 1, thereby reducing the risk of other pigs in the pen disturbing the pigs in the feeding station 1 for reasons such as cooling down.

[0051] When the length of the feeding station 1 is sufficient to allow the entire body of a pig to enter, the movable part 3 can be installed inside the feeding station 1. As the pig enters the feeding station 1 and moves toward the feed trough 10, it will push up the movable part 3 to open the air outlet 2. During the feeding process in the feeding station 1, the movable part 3 will be continuously pushed up by the pig to keep it open. The opening of the feeding station 1 is small or can be closed after the pig enters the feeding station 1 to reduce the chance of the air blown out by the air outlet 2 entering the pig pen through the opening of the feeding station 1, thereby reducing the risk of other pigs in the pen disturbing the pigs in the feeding station 1 for reasons such as cooling down.

[0052] When the movable part 3 is not lifted by the pig, the air outlet 2 is at its initial height. When the movable part 3 is not lifted, the gap between its bottom and the ground is smaller than that of a pig of average size, allowing the height of the air outlet 2 to be adjusted to suit the height of most pigs.

[0053] Even pigs raised in the same pigsty can have different body sizes. Larger pigs are taller than ordinary pigs. The movable part 3 is lifted up by the pigs entering the feeding station 1 and rises a certain distance according to the height of the pigs. The transmission component 40 guides the air outlet device 2 to rise synchronously according to the size information of the rising movable part 3, so that the height of the air outlet device 2 can be adjusted according to the height of the pigs entering the feeding station 1. This allows pigs of different sizes to rely on the air outlet device 2 to reduce their body temperature when entering the feeding station 1 to eat. This makes the low-energy precision ventilation system for pigsties provided in this application able to effectively and stably reduce the body temperature of pigs when eating.

[0054] According to some embodiments of this application, optionally, such as Figure 4 As shown, the movable part 3 is provided with a limit block 30. The movable part 3 slides and engages with the chute of the feeding station 1 through the limit block 30, and the movable part 3 moves up and down along the chute.

[0055] The number of limit blocks 30 can be multiple.

[0056] The number of slides can be less than the number of limit blocks 30, but each slide must contain at least one limit block 30.

[0057] The movable component 3 slides with the feeding station 1 through the limiting block 30. The sliding block restricts the lifting direction of the movable component 3 when it is lifted by the pig, reducing the risk that the movable component 3 will leave the feeding station 1 due to the movement of the pig, and improving the structural stability of the low-energy precision ventilation system for pig houses provided in this application.

[0058] According to some embodiments of this application, optionally, such as Figure 2 , Figures 4-5 As shown, the movable part 3 includes a mating part 31 and a supporting part 32. The mating part 31 contacts and slides with the feeding station 1, and the supporting part 32 has a supporting surface 320 for contacting pigs entering the feeding station 1.

[0059] The support surface 320 can be a smooth curved surface, so that the friction between the support surface 320 and the pig's back skin is small when the support surface 320 comes into contact with the pig's back skin, thereby reducing the risk of the pig's back skin being injured by friction from the support surface 320 when the pig enters or leaves the feeding station 1.

[0060] The support part 32 has a support surface 320 for contacting the pig entering the feeding station 1, so that the contact area between the movable part 3 and the pig's back skin is large. When the pig lifts the movable part 3, the weight of the movable part 3 can be distributed to the contact point between the support surface 320 and the pig's back, thereby reducing the risk of the pig's back skin being injured due to the force applied to the pig by the movable part being too concentrated.

[0061] According to some embodiments of this application, optionally, such as Figure 2 , Figures 4-5 As shown, the movable part 3 also includes a guide part 33, which is located on the side of the support part 32 away from the air outlet device 2. The guide part 33 is raised in the direction away from the pig entering the feeding station 1, and the surface of the guide part 33 facing the pig entering the feeding station 1 is an arc surface that smoothly transitions with the support surface 320.

[0062] The guide part 33 can be made of a flexible material so that the pig's head is less likely to be injured when it collides with the guide part 33.

[0063] The guide part 33 is located on the side of the support part 32 away from the air outlet device 2. When the pigs in the pen move towards the feed trough 10 in the feeding station 1, the pigs' heads will first come into contact with the guide part 33. The guide part 33 is tilted away from the direction of the pigs entering the feeding station 1. The surface of the guide part 33 facing the pigs entering the feeding station 1 is an arc surface that smoothly transitions with the support surface 320, so that the pigs' heads first come into contact with the surface of the guide part 33 facing the pigs entering the feeding station 1, and then come into contact with the support part 32 through the guide part 33, gradually lifting the movable part 3.

[0064] According to some embodiments of this application, optionally, such as Figures 2-6As shown, the transmission assembly 40 includes a pull rope 400 and a plurality of pulleys 401. The pulleys 401 are rotatably mounted on the feeding station 1. The two ends of the pull rope 400 are respectively connected to the movable part 3 and the air outlet device 2. The pull rope 400 is supported by the plurality of pulleys 401 to pull the air outlet device 2 up and down.

[0065] The number of multiple pulleys 401 can be two, three, four, five, six, seven, eight, nine, ten or even more.

[0066] The multiple pulleys 401 can all be fixed pulleys 401, or the multiple pulleys 401 can include multiple movable pulleys 401 and at least one fixed pulley 401.

[0067] The two ends of the pull rope 400 are connected to the movable part 3 and the air outlet device 2 respectively. The pull rope 400 is supported by multiple pulleys 401 to pull the air outlet device 2 up and down. The movement between the movable part 3 and the air outlet device 2 is linked through the pull rope 400. The structure is simple, the transmission effect is intuitive and effective, and the difficulty of use and maintenance is low.

[0068] According to some embodiments of this application, optionally, such as Figures 4-6 As shown, the air outlet device 2 is connected to the air intake device through the air pipe 20. The part of the air pipe 20 that connects to the air outlet device 2 is a flexible hose. The transmission assembly 40 also includes an elastic element 402, which is connected to the feeding station 1 and the air outlet device 2. The elastic element 402 is in a stretched state. The movable part 3 pulls the air outlet device 2 down through the pull rope 400, and the elastic element 402 pulls the air outlet device 2 up.

[0069] When there are multiple air outlet devices 2, the multiple air outlet devices 2 can be connected to the non-bendable main pipe through the bendable air pipe 20, and then the main pipe is connected to the air intake device.

[0070] The trachea 20 can be a corrugated hose, so that the deformation generated when the trachea 20 is bent or contracted can be absorbed by the external structure of the trachea 20 itself, thereby reducing the risk of damage to the surface of the trachea 20 and extending the service life of the trachea 20.

[0071] The air outlet device 2 is connected to the air intake device via an air pipe 20. The part of the air pipe 20 that connects to the air outlet device 2 is a flexible hose. When the air outlet device 2 is raised or lowered, the air pipe 20 can also bend or straighten accordingly, so that the air outlet device can continue to blow air to the pigs in the feeding station 1 even after it has moved. The transmission assembly 40 also includes an elastic element 402, which is connected to the feeding station 1 and the air outlet device 2. The elastic element 402 is in a stretched state, and the elastic force applied by the elastic element 402 to the air outlet device 2 is vertically upward. The resultant force of the weight of the air outlet device 2 applied by the movable part 3 through the pull rope 400 and the weight of the air outlet device 2 is vertically downward. When there are no pigs in the feeding station 1, the air outlet device 2 is at its initial height. At this time, the resultant force of the elastic force applied by the elastic element 402 to the air outlet device 2 and the weight of the air outlet device 2 are vertically downward. The sum of the gravity received by the pig and the gravity of the movable part 3 is equal, so that the air outlet device 2 can remain stationary in the feeding station 1. When the movable part 3 is lifted by the pig, the tension from the end connected to the movable part 3 becomes relaxed, and the total gravity loses the gravity of the movable part 3. At this time, the elastic force is greater than the total gravity, and the air outlet device 2 rises under the pull of the elastic force until the tension is tightened again. The air outlet device 2 opens and remains stationary. The elastic force of the elastic part 402 is equal to the total gravity. At this time, because the stretching distance of the elastic part 402 is shortened, the elastic force of the elastic part 402 decreases. The total gravity is equal to the gravity of the air outlet device 2 and part of the gravity of the movable part 3, so that the gravity of the movable part 3 will not be entirely applied to the pig's back, reducing the risk of skin damage caused by excessive compression of the pig's back by the movable part 3.

[0072] According to some embodiments of this application, optionally, such as Figure 4 As shown, the air outlet device 2 slides and engages with the slide rail 11 inside the feeding station 1, and the air outlet device 2 moves up and down along the slide rail 11; the control mechanism 4 also includes an electric contact piece 41, and both the feeding station 1 and the air outlet device 2 are provided with electric contact pieces 41. The electric contact piece 41 on the feeding station 1 is connected to the power supply. The air outlet device 2 moves up and down so that the electric contact piece 41 on the air outlet device 2 and the electric contact piece 41 on the feeding station 1 come into contact or are offset so that the air outlet device 2 is energized to open or de-energized to close.

[0073] The number of slide rails 11 can be multiple, and the air outlet device 2 is provided with a slide for cooperating with the slide rails 11 of the feeding station 1.

[0074] The air outlet device 2 slides in conjunction with the slide rail 11 inside the feeding station 1. The feeding station 1 restricts the lifting direction of the air outlet device 2 through the slide rail 11, reducing the risk of the air outlet device 2 detaching from the feeding station 1 and improving the connection stability between the low-energy precision ventilation system for pig houses provided in this application and the feeding station 1. The control mechanism 4 also includes an electric contact 41. Both the feeding station 1 and the air outlet device 2 are equipped with electric contact 41. The electric contact 41 on the feeding station 1 is connected to the power supply. When the air outlet device 2 is at its initial height without any pigs in the feeding station 1, the electric contact 41 on the air outlet device 2 and the electric contact 41 on the feeding station 1 are misaligned, causing the air outlet device 2 to be de-energized and closed. When the air outlet device 2 rises, the electric contact 41 on the air outlet device 2 and the electric contact 41 on the feeding station 1 come into contact, allowing current to flow through the two electric contact 41s into the air outlet device 2, thus turning on the air outlet device 2. The opening of the air outlet device 2 is controlled by the electric contact piece 41. The structure is simple and the effect is stable. The size of the electric contact piece 41 on the air outlet device 2 is smaller than that on the feeding station 1. Before the electric contact piece 41 on the air outlet device 2 and the electric contact piece 41 on the feeding station 1 are fully in contact, the contact area between the electric contact piece 41 on the air outlet device 2 and the electric contact piece 41 on the feeding station 1 gradually increases. The contact area between the two electric contact pieces 41 is the current carrying area. The larger the contact area between the two electric contact pieces 41, the larger the current input to the air outlet device 2. Before reaching the rated power, the working efficiency of the air outlet device 2 is directly proportional to the magnitude of the input current. Specifically, the larger the current, the stronger the air force blown by the air outlet device 2. This allows the air force of the air outlet device 2 to gradually increase from small to large during the upward process, reducing the risk of sudden strong winds causing shock and stress to the pigs entering the feeding station 1.

[0075] According to some embodiments of this application, optionally, such as Figures 1-3 , Figure 6 As shown, there are multiple air outlet devices 2 and multiple control mechanisms 4. Each air outlet device 2 corresponds to one control mechanism 4. The multiple air outlet devices 2 are arranged along the extension direction of the feed trough 10 in the feeding station 1. Each feed trough 10 corresponds to the position of at least one air outlet device 2.

[0076] The number of multiple air outlet devices 2 can be four, eight, twelve, sixteen, twenty or more.

[0077] There are also multiple control mechanisms 4, with multiple air outlet devices 2 corresponding one-to-one with multiple control mechanisms 4. The multiple air outlet devices 2 are arranged along the extension direction of the feed trough 10 in the feeding station 1. The low-energy precision ventilation system for pig houses provided in this application can enable only the air outlet devices 2 in the area directly opposite where pigs are eating to be turned on, thereby achieving precise ventilation and reducing the energy consumption required for ventilation.

[0078] According to some embodiments of this application, optionally, the air outlet 2 blows air obliquely from the back of the neck to the hind legs of the pig located in the feeding station 1.

[0079] The air outlet 2 blows air obliquely towards the pigs in the feeding station 1, so that the air outlet range of the air outlet 2 can cover most of the pig's body, thereby improving the cooling effect on the pig's body.

[0080] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A low-energy precision ventilation system for pigsties, used to blow air onto pigs feeding in the feeding station, characterized in that, include: The ventilation device is suspended inside the feeding station; A movable component, which is pushed by pigs entering the feeding station to determine whether there are pigs in the feeding station; A control mechanism is used to control the air outlet device to switch between an on and off state based on whether there are pigs in the feeding station; The air outlet device directs air towards the shoulders and necks of pigs eating at the feed trough in the feeding station. The air outlet device is vertically and flexibly mounted on the feeding station. The control mechanism includes a transmission assembly. The movable part is vertically and flexibly mounted on the feeding station. The transmission assembly is located between the movable part and the air outlet device. The movable part is closer to the entrance of the feeding station than the air outlet device. The movable part is used to be lifted up by the pigs entering the feeding station, and the transmission assembly guides the air outlet device to rise synchronously according to the size information of the rising movable part so that the air outlet device is directly facing the pig's shoulder and neck. The movable component is provided with a limit block, and the movable component slides and engages with the chute of the feeding station through the limit block, and the movable component moves up and down along the chute; The movable part includes a mating part and a supporting part. The mating part contacts and slides with the feeding station, and the supporting part has a supporting surface for contacting pigs entering the feeding station. The movable component also includes a guide portion, which is disposed on the side of the support portion away from the air outlet device. The guide portion is tilted in the direction away from the pigs entering the feeding station, and the surface of the guide portion facing the pigs entering the feeding station is an arc surface that smoothly transitions with the support surface. The movable component also includes a guide portion, which is disposed on the side of the support portion away from the air outlet device. The guide portion is tilted in the direction away from the pigs entering the feeding station, and the surface of the guide portion facing the pigs entering the feeding station is an arc surface that smoothly transitions with the support surface. The transmission assembly includes a pull rope and a plurality of pulleys. The pulleys are rotatably mounted on the feeding station. The two ends of the pull rope are respectively connected to the movable part and the air outlet device. The pull rope is supported by the plurality of pulleys to pull the air outlet device up and down. The air outlet device is connected to the air inlet device through an air pipe. The part of the air pipe that connects to the air outlet device is a flexible hose. The transmission assembly also includes an elastic element. The elastic element is connected to the feeding station and the air outlet device. The elastic element is in a stretched state. The movable component pulls the air outlet device downward via the pull rope, and the elastic component pulls the air outlet device upward. The air outlet device slides along the slide rail inside the feeding station, and the air outlet device moves up and down along the slide rail; The control mechanism also includes an electric contact plate, which is provided on both the feeding station and the air outlet device. The electric contact plate on the feeding station is connected to a power source. The air outlet device is raised and lowered to allow the electric contact plate on the air outlet device to contact or separate from the electric contact plate on the feeding station, so that the air outlet device is energized to open or de-energized to close.

2. The low-energy precision ventilation system for pigsties according to claim 1, characterized in that, There are multiple air outlet devices and multiple control mechanisms. Each air outlet device corresponds to one of the multiple control mechanisms. The multiple air outlet devices are arranged along the extension direction of the feed trough in the feeding station. Each feed trough corresponds to the position of at least one air outlet device.

3. The low-energy precision ventilation system for pigsties according to claim 1, characterized in that, The air outlet device blows air obliquely from the back of the neck to the hind legs of the pigs located in the feeding station.

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