A pig breeding indoor air ventilation mechanism

Abstract

The utility model discloses a kind of in-shed air ventilation mechanisms for pig breeding, including pig house, first filter plate, cleaning assembly, pig house top is equipped with ventilation box, first filter plate is equipped with two groups and two groups first filter plate are all located in ventilation box, second filter plate is equipped in ventilation box and located first filter plate bottom, for the air of entering first filter plate is pre-filtered, cleaning assembly is located in second filter plate top, for cleaning second filter plate, second filter plate is intercepted as pre-filtering unit large particle dust and sundries, cooperate with the instant cleaning of brush cylinder and dust collector, effectively prevent pore blockage, avoid the problem that traditional filter screen causes ventilation resistance to increase and energy consumption to rise due to adherend accumulation, and by integrated automatic cleaning assembly, filter plate cleaning can be completed without shutdown disassembly, both reduce the artificial input of breeding personnel, and avoid the problem that filter unit sealing performance decreases due to frequent disassembly.

Description

Technical Field

[0001] This utility model belongs to the field of pig farming technology, specifically relating to an air ventilation mechanism for pig farms. Background Technology

[0002] In large-scale, intensive pig farming, the air quality inside the pigsty directly determines the pigs' growth and health, production performance, and economic benefits. The ventilation system is the core equipment for maintaining air circulation and regulating temperature and humidity in the pigsty. To prevent external debris (such as flying insects and fallen leaves) or pollutants such as feed residue, fecal debris, and pig hair generated inside the pigsty from entering the ventilation duct and causing equipment failure, and to prevent dust from being directly discharged and polluting the surrounding environment, existing pigsty ventilation systems generally have filters at the air inlet to intercept dust and impurities in the air, and multi-stage filtration components at the air outlet to filter the air.

[0003] Existing pig farming environments have unique characteristics. Feeding and pig activity generate a large amount of suspended dust, and the process of cleaning manure easily produces dust-laden airflow. This dust easily adheres to the surface and pores of the filters installed at the air inlet to intercept dust and impurities in the air. If these adhered substances and accumulated debris are not cleaned in time, the filtration resistance of the filters will increase significantly in the short term, and the ventilation system will need to consume more energy to maintain the rated ventilation volume, resulting in energy waste. Currently, filter cleaning is mostly done manually on a regular basis. That is, the farm workers need to stop the machine and disassemble the filter unit of the ventilation system to clean the filter by brushing, high-pressure air blowing, or water washing. However, this method not only takes up a lot of manual time, but frequent disassembly can also lead to a decrease in the sealing performance of the filter unit, which is quite inconvenient. Utility Model Content

[0004] The purpose of this invention is to provide an air ventilation mechanism for pig farms to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pig internal air ventilation mechanism for pig farming, comprising: The pigsty is equipped with a ventilation box on the top for ventilation and air exchange inside the pigsty; The first filter plate has two sets, and both sets of the first filter plates are located in the ventilation box for filtering and purifying the exhaust air. The ventilation box is located at the bottom of the first filter plate for pre-filtering the air entering the first filter plate, intercepting large dust and debris in the air and preventing them from directly entering the first filter plate and causing blockage. A cleaning component, located on top of the second filter plate, is used to clean the dust and debris adhering to the surface of the second filter plate, preventing them from accumulating and clogging the pores of the second filter plate. The cleaning component includes a frame, which is located inside a ventilation box. A brush cylinder rotates within the frame via a hollow rotating shaft. A vacuum cleaner is installed inside the frame. The brush cylinder rotates in contact with the surface of the second filter plate and sweeps away the dust and debris adhering to it. The dust and impurities swept off by the brush cylinder can be sucked in and collected by the vacuum cleaner in a timely manner, thus cleaning the second filter plate. The ventilation box enables ventilation in the pigsty, and the first filter plate purifies the exhaust air. The second filter plate intercepts large particles of impurities. The brush cylinder and vacuum cleaner of the cleaning component work together to clean the second filter plate to prevent clogging. Preferably, the brush cylinder is hollow and has several suction holes evenly distributed inside. One end of the vacuum cleaner is connected to the hollow rotating shaft through a pipe. The suction holes of the hollow brush cylinder, in conjunction with the vacuum cleaner connected to the hollow rotating shaft, enable the immediate suction and collection of cleaning impurities, avoiding secondary pollution. Preferably, the frame is equipped with a servo motor and the output shaft of the servo motor is connected to one of the hollow rotating shafts. Two sets of first driving components are fixedly mounted on the output shaft of the servo motor. Two sets of driving rods are rotatably connected to the frame through bearings. The servo motor provides rotational power to the hollow rotating shaft to drive the brush cylinder, and at the same time transmits the power to the driving rods through the first driving components, thereby realizing power distribution and transmission.

[0006] Preferably, one end of the drive rod is connected to a second drive component, and the first drive component and the second drive component are connected by a drive belt. The other end of the drive rod is connected to a roller, and the bottom of the roller is rolled in connection with a groove provided in the top of the second filter plate. The first and second drive components are connected by a drive belt, and the power of the servo motor is transmitted to the drive rod, so that the roller rolls along the groove and drives the cleaning component to move along the second filter plate.

[0007] Preferably, the ventilation box is connected to two sets of sliding rods and the top of the frame is slidably sleeved on the sliding rods. The sliding rods limit the movement trajectory of the frame, ensuring that the brush of the cleaning component fits tightly with the surface of the second filter plate and moves smoothly. Preferably, the ventilation box is provided with several sliding grooves, and one end of the first filter plate and the second filter plate are respectively slidably inserted into several sliding grooves. The sliding groove structure facilitates the installation, replacement and maintenance of the first and second filter plates, and the sealing ring ensures that the insertion point is sealed to prevent air leakage. Preferably, a ventilation fan is provided at the bottom of the ventilation box, and a deflector plate is connected to the bottom of the ventilation box. The ventilation fan generates directional airflow, and the deflector plate combs the intake air into a smooth airflow and guides it to the filter unit, reducing airflow eddies and energy loss. Preferably, a ventilation mesh plate is fixed to the top of the ventilation box by bolts. The ventilation mesh plate blocks the intrusion of external debris, and the bolt fixing method ensures a tight seal and facilitates disassembly and cleaning.

[0008] Compared with the prior art, the beneficial effects of this utility model are: The second filter plate acts as a pre-filter unit to intercept large dust and debris. Combined with the immediate cleaning by the brush and vacuum cleaner, it effectively prevents pore blockage and avoids the problems of increased ventilation resistance and energy consumption caused by the accumulation of deposits in traditional filters. Furthermore, by integrating an automatic cleaning component, the filter plate can be cleaned without stopping the machine for disassembly, which reduces the manual input of farmers and avoids the problem of decreased sealing performance of the filter unit caused by frequent disassembly and assembly.

[0009] The multi-stage filtration design enhances the air purification effect. Two sets of first filter plates deeply purify the exhaust air, and combined with the pre-interception of the second filter plate, a dual protection of "coarse filtration-fine filtration" is formed. This can prevent feed residue, pig hair and other debris from entering the air duct and causing equipment failure, and can also prevent odors in the air from polluting the external environment. In addition, the sliding installation structure makes the replacement and maintenance of the filter plates more convenient.

[0010] By keeping the filter plate pores open, the energy loss of the ventilation system is significantly reduced. At the same time, the air diversion plate and ventilation fan in the ventilation box form an optimized airflow path, making the air circulation in the house more efficient, reducing local airflow dead zones, and effectively blocking the intrusion of external flying insects, fallen leaves and other debris, thus reducing the probability of equipment failure due to foreign object blockage. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the ventilation box of this utility model; Figure 3 This is a schematic diagram of the internal structure of the frame of this utility model; Figure 4 This is a schematic diagram of the transmission structure of the first and second driving components of this utility model; Figure 5 This is a front view of the brush cylinder of this utility model; Figure 6 This is a schematic diagram of the ventilation fan of this utility model.

[0012] In the diagram: 1. Pigsty; 2. Ventilation box; 3. First filter plate; 4. Second filter plate; 5. Frame; 6. Brush cylinder; 7. Vacuum cleaner; 8. Suction hole; 9. Servo motor; 10. First drive component; 11. Drive rod; 12. Second drive component; 13. Drive belt; 14. Roller; 15. Slide rod; 16. Ventilation fan; 17. Drainage plate; 18. Ventilation mesh plate. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved with", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0015] This utility model provides, for example Figure 1-6 The illustrated air ventilation system for pig farms includes: Pigsty 1, the top of which is equipped with a ventilation box 2 for directional circulation and purification of air inside the pigsty. The ventilation box 2 can form a negative pressure environment through airflow to realize the exchange of air between the inside and outside of the pigsty. The multi-stage filtration module includes two sets of first filter plates 3 and one set of second filter plates 4, both located inside the ventilation box 2 and arranged sequentially along the airflow direction. The second filter plate 4 is located at the bottom of the first filter plates 3 and is used for pre-filtering the air entering the ventilation box, intercepting feed residue, pig hair, and large dust particles in the air to prevent them from entering subsequent filtration units and causing blockages. The two sets of first filter plates 3 are made of composite adsorption filter material, specifically including an activated carbon layer and a molecular sieve layer, for deep purification of the pre-filtered air. The activated carbon layer can physically adsorb odor molecules such as ammonia and hydrogen sulfide in the air, and the molecular sieve layer can trap fine dust particles with a diameter of 0.1-1μm, working together to achieve multi-stage deep purification of the air. An automatic cleaning component is located on top of the second filter plate 4 and is used to clean the surface of the filter plate online during the operation of the ventilation system. The component includes a frame 5, a brush cylinder 6, and a vacuum cleaner 7. The frame 5 provides structural support. The brush cylinder 6 is rotatably mounted on the frame 5 via a hollow rotating shaft and can rotate and sweep the surface of the second filter plate 4. The vacuum cleaner 7 is connected to the hollow rotating shaft through a pipe and can immediately suck up and collect the dust and impurities generated during cleaning, so as to keep the pores of the filter plate clear. The model of the vacuum cleaner 7 can be selected according to the equipment power, dust collection capacity, and other requirements in actual application. After the vacuum cleaner 7 has collected a certain amount of dust and impurities, the side cover on one side of the ventilation box 2 can be opened, and the collection chamber inside the vacuum cleaner 7 inside the frame 5 can be opened to remove the chamber or filter bag storing the dust and impurities for cleaning.

[0016] The brush cylinder 6 adopts a hollow structure design, with several suction holes 8 evenly distributed on its cylinder wall, forming an integrated "sweeping-adsorption" channel. The negative pressure generated by the vacuum cleaner 7 is transmitted to the inside of the brush cylinder through the hollow rotating shaft, so that the impurities that are swept off can be quickly collected through the suction holes 8, avoiding secondary pollution.

[0017] The frame 5 is equipped with a drive module, including a servo motor 9, two sets of first drive components 10 and two sets of drive rods 11. The output shaft of the servo motor 9 is connected to the hollow rotating shaft for driving the brush cylinder 6 to rotate. The first drive components 10 are fixedly mounted on the output shaft of the servo motor 9, and the drive rods 11 are rotatably mounted in the frame 5 through bearings to realize the distribution and transmission of power. One end of the drive rod 11 is provided with a second drive member 12 that cooperates with the first drive member 10. The two are connected by a drive belt 13. The other end of the drive rod 11 is equipped with a roller 14. The roller 14 rolls with the groove provided on the top of the second filter plate 4, which can convert rotational power into linear motion and drive the cleaning component to move along the length of the filter plate. The first drive member 10 and the second drive member 12 can be selected as synchronous pulleys or sprockets. Correspondingly, the drive belt 13 is adapted to be a synchronous belt or a chain. When a synchronous pulley and a synchronous belt are combined, non-slip transmission is achieved through tooth meshing. When a sprocket and a chain are combined, rigid transmission is achieved through chain link and wheel tooth meshing. The appropriate combination can be selected according to actual needs.

[0018] The ventilation box 2 is equipped with two sets of parallel sliding rods 15. The top of the frame 5 is connected to the sliding rods 15 through a sliding kit to limit the movement trajectory of the cleaning components and ensure that the brush cylinder 6 is in close contact with the surface of the filter plate and moves smoothly. The ventilation box 2 has several sliding grooves on its inner wall. The first filter plate 3 and the second filter plate 4 cooperate with the sliding grooves through the sliding structure at their ends. The second filter plate 4 and the two sets of first filter plates 3 are all installed in a sliding groove manner. The inner wall of the middle filtration area of ​​the ventilation box 2 has a slot that matches the edge of the filter plate. The filter plate can be directly pulled out and removed along the slot. This design not only eliminates the need for tools during installation, but more importantly, when the filter plate reaches the end of its service life and needs to be replaced, the staff does not need to disassemble other parts of the ventilation box 2. They only need to pull out the old filter plate from the side and insert the new filter plate. This avoids damage to the system's sealing performance due to frequent disassembly and does not affect the overall operation of the ventilation system. In addition, the insertion points of the second filter plate 4 and the two sets of first filter plates 3 into the ventilation box 2 are equipped with sealing rings to seal the insertion points and prevent air leakage.

[0019] The bottom of the ventilation box 2 is provided with an airflow drive and rectification module, including a ventilation fan 16 and a flow guide plate 17. The ventilation fan 16 can generate directional airflow, and the flow guide plate 17 is inclined and has an arc-shaped flow guide groove on its surface, which is used to sort the intake air into a stable airflow and guide it to the filter unit to reduce airflow eddies and energy loss. The ventilation box 2 is equipped with a protective ventilation module on its top, including a ventilation mesh plate 18 fixed with bolts. The ventilation mesh plate 18 is fixed to the top of the ventilation box 2 with bolts distributed at the four corners and edges of the mesh plate. This ensures a tight seal between the ventilation mesh plate 18 and the ventilation box 2 (preventing unfiltered air from leaking through gaps) and facilitates later maintenance. When it is necessary to clean the external debris (such as fallen leaves or cobwebs) attached to the surface of the ventilation mesh plate 18, simply unscrew the bolts to remove the mesh plate. After cleaning, it can be reinstalled and fixed. The operation is simple and does not damage the system structure. During the operation of the entire system, the ventilation fan 16, servo motor 9, and vacuum cleaner 7 are linked and start and stop synchronously, ensuring that the three links of "ventilation-filtration-cleaning" are always coordinated. This avoids the inefficiency caused by starting a single component alone and ensures that every stream of air entering the system undergoes a complete purification process. At the same time, the filter components are always in a clean state, maintaining a stable ventilation and purification effect.

[0020] The ventilation system for pig farms revolves around "directional airflow + layered filtration". The ventilation box 2 is divided into a bottom air intake zone, a middle filtration zone, and a top exhaust zone. Each zone is connected by specific components to ensure unidirectional airflow and thorough purification. When the system is started, the ventilation fan 16 first creates negative pressure in the bottom air intake zone, actively drawing in the air containing dust, feed residue, and pig hair from the pig house 1 into the ventilation box 2. At this time, the guide plates 17 in the bottom air intake zone play a guiding role. These guide plates 17 are fixed at an inclined angle to the inner wall of the ventilation box 2, and the plate surface has arc-shaped guide grooves, which can sort the chaotic airflow into a stable upward airflow, avoiding the formation of vortices in the air intake zone that cause impurities to accumulate. The sorted airflow will be precisely guided into the second filter plate 4 in the middle filtration zone. The second filter plate 4 is installed horizontally inside the ventilation box 2. Its filter structure is based on "large pore interception" and is specifically designed to intercept larger impurities in the airflow (such as feed particles, long pig hairs, and blocky dust). After coarse filtration by the second filter plate 4, most of the impurities in the airflow that are likely to clog subsequent components have been removed. Then, it continues to enter the core purification stage of the middle filtration zone - two sets of first filter plates 3. These two sets of first filter plates 3 are installed in parallel and stacked. Not only are the filter pores finer (capturing fine dust particles and suspended impurities in the airflow), but the filter substrate is also composited with a porous adsorption layer (such as modified activated carbon particles, polymer adsorption materials, etc.). The microporous structure of this type of material can efficiently adsorb odor molecules in the airflow. Through "physical adsorption", the odor concentration of the exhaust air is reduced, achieving a progressive deep purification of "coarse filtration to remove impurities → fine filtration to remove dust and deodorize".

[0021] When the first filter needs to be cleaned, the ventilation fan 16 is stopped. The operator controls the servo motor 9 and the vacuum cleaner 7 to start through an external controller. The servo motor 9 serves as the power source, and its output shaft is directly and rigidly connected to the hollow rotating shaft. When the motor runs, it drives the hollow rotating shaft to rotate synchronously. The brush cylinder 6 is tightly fitted on the outside of the hollow rotating shaft. The bristles on the surface of the brush cylinder 6 are completely in contact with the filter surface of the second filter plate 4. As the hollow rotating shaft rotates, the bristles will repeatedly rub the filter surface in a circular motion, thoroughly removing the impurities attached to the second filter plate 4 (such as accumulated feed residue, tangled pig hair, and clumps of dust) to prevent impurities from clogging the filter pores. Since the hollow shaft is not a solid structure, it has a through air passage inside and is connected to the brush cylinder 6. At the same time, one end of the hollow shaft is connected to the vacuum cleaner 7 through a hose. When the vacuum cleaner 7 is started, a negative pressure is formed inside the hollow shaft, which causes the impurities detached from the brush bristles of the brush cylinder 6 to be immediately sucked into the air suction hole 8 on the surface of the brush cylinder 6, and then enters the collection chamber of the vacuum cleaner 7 through the air passage of the hollow shaft. This "sweeping and collecting at the same time" design can prevent the detached impurities from being scattered into the air again due to airflow disturbance, or falling to the bottom of the ventilation box 2 and causing secondary pollution. To ensure that the entire surface of the second filter plate 4 can be cleaned, the cleaning assembly is designed with a reciprocating movement structure. A first drive component 10 is fixed on the output shaft of the servo motor 9 and connected to the drive rod 11 below via a drive belt 13. When the servo motor 9 is running, the first drive component 10 drives the drive belt 13 to rotate, which in turn drives the second drive component 12 to rotate. The second drive component 12 then rotates the drive rod 11. A roller 14 is installed at one end of the drive rod 11, and the roller 14 fits perfectly into the rail grooves on both sides of the second filter plate 4. As the drive rod 11 rotates, the roller 14 rolls smoothly along the rail grooves, driving the entire cleaning assembly to move along the length of the second filter plate 4. At the same time, the top of the cleaning assembly is also fitted onto a slide rod 15 fixed to the inner wall of the ventilation box 2. The slide rod 15 is parallel to the rail grooves and can limit the movement direction of the cleaning assembly, preventing it from deviating or shaking during movement, ultimately achieving thorough cleaning of the surface of the second filter plate 4 without any dead angles.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An air ventilation mechanism for pig farms, characterized in that, include: Pig house (1), the top of which is provided with a ventilation box (2) for ventilation and air exchange in the pig house (1); The first filter plate (3) is provided with two sets and both sets of the first filter plates (3) are located in the ventilation box (2) for filtering and purifying the exhaust air. The ventilation box (2) is provided with a second filter plate (4) at the bottom of the first filter plate (3) for pre-filtering the air entering the first filter plate (3) to intercept large dust particles and debris in the air and prevent them from directly entering the first filter plate (3) and causing blockage. The cleaning component is located on the top of the second filter plate (4) and is used to clean the dust and debris attached to the surface of the second filter plate (4) to prevent them from accumulating and clogging the pores of the second filter plate (4). The cleaning component includes a frame (5), which is located inside the ventilation box (2) and has a brush cylinder (6) rotating inside the frame (5) via a hollow rotating shaft. A vacuum cleaner (7) is provided inside the frame (5). The brush cylinder (6) rotates against the surface of the second filter plate (4) and cleans the dust and debris attached to it. The dust and impurities cleaned by the brush cylinder (6) can be sucked in and collected by the vacuum cleaner (7) in a timely manner to achieve cleaning of the second filter plate (4).

2. The air ventilation mechanism for pig farms according to claim 1, characterized in that: The brush cylinder (6) is hollow and has several suction holes (8) evenly distributed inside. One end of the vacuum cleaner (7) is connected to the hollow rotating shaft through a pipe.

3. The air ventilation mechanism for pig farms according to claim 1, characterized in that: The frame (5) is equipped with a servo motor (9) and the output shaft of the servo motor (9) is connected to one of the hollow rotating shafts. Two sets of first drive components (10) are fixedly mounted on the output shaft of the servo motor (9). Two sets of drive rods (11) are rotatably connected to the frame (5) through bearings.

4. The air ventilation mechanism for pig farms according to claim 3, characterized in that: One end of the drive rod (11) is connected to a second drive member (12), and the first drive member (10) and the second drive member (12) are connected by a drive belt (13). The other end of the drive rod (11) is connected to a roller (14), and the bottom of the roller (14) is rolledly connected to the rail groove provided in the top of the second filter plate (4).

5. The air ventilation mechanism for pig farms according to claim 1, characterized in that: The ventilation box (2) is connected to two sets of slide rods (15), and the top of the frame (5) is slidably sleeved on the slide rods (15).

6. The air ventilation mechanism for pig farms according to claim 1, characterized in that: The ventilation box (2) is provided with several sliding grooves, and one end of the first filter plate (3) and the second filter plate (4) are respectively slidably inserted into several sliding grooves.

7. The air ventilation mechanism for pig farms according to claim 1, characterized in that: The ventilation box (2) is equipped with a ventilation fan (16) at the bottom and a diversion plate (17) is connected to the bottom of the ventilation box (2).

8. The air ventilation mechanism for pig farms according to claim 1, characterized in that: The ventilation box (2) is fixed to the top with a ventilation mesh plate (18) by bolts.

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