Poultry house air purification device and poultry house air purification method

Abstract

The invention relates to the technical field of crossing of livestock and poultry breeding environment control and high-energy non-equilibrium plasma physics, in particular to a poultry house air purification device and a poultry house air purification method. In the poultry house air purification device, air inlets used for introducing polluted air are formed in the side walls of the two sides of a shell, and a drainage structure used for providing negative pressure driving force is arranged at the top of the front end of the shell; the curved surface flow guide wall group and the shell are matched to form a Venturi type focusing flow channel; the shell is matched with the quenching cavity and the drainage structure to form a negative pressure cavity; when the drainage structure provides negative pressure driving force, polluted air enters the shell from the air inlet, is accelerated by the Venturi type focusing flow channel, is decomposed into high-heat purified air based on mechanochemical cracking under the discharge action of the discharge array, enters the quenching cavity, enters the negative pressure cavity after heat recovery, and is discharged through the drainage structure. The device is free of ozone generation, resistant to high humidity and high dust, thorough in purification and particularly suitable for efficient, safe and low-maintenance operation of a multi-layer three-dimensional poultry house.

Description

Technical Field

[0001] This invention relates to the interdisciplinary field of livestock and poultry breeding environment control and high-energy non-equilibrium plasma physics, and particularly to a poultry house air purification device and method. Background Technology

[0002] Modern intensive poultry farming commonly uses multi-story, vertical poultry houses, but their internal air quality is a significant problem: high concentrations of ammonia (>25 ppm) irritate the respiratory tract of poultry, and hydrogen sulfide and volatile organic compounds (VOCs) contribute to air pollution. S Poultry houses produce foul odors, and airborne dust and pathogens (such as avian influenza viruses) can easily lead to the spread of diseases. Traditional purification technologies face three major bottlenecks: First, uneven purification between layers. Existing equipment mostly relies on centralized top ventilation, making it difficult for bottom airflow to effectively participate in the purification cycle, resulting in localized pollution accumulation. Second, high humidity and high dust levels cause equipment failure. The relative humidity in poultry houses is often >85%, and the air contains a large amount of feather and feed dust. During long-term operation, conventional dielectric barrier discharge (DBD) devices are prone to electrode coverage by dust or the formation of water films, leading to unstable discharge or even quenching. Third, there is a contradiction between purification efficiency and ozone safety. DBD oxidizes pollutants by generating reactive species such as hydroxyl radicals (·OH) and O3, but ozone is highly toxic to poultry (safety threshold <0.1ppm). Reducing energy input to suppress ozone sacrifices purification efficiency; conversely, increasing energy input poses safety risks. Current research has attempted to use nanosecond pulse discharge to enhance VOC levels. S Removal efficiency has been improved, or energy release may be enhanced using plasma-assisted deflagration-to-detonation (DDT). However, these studies all serve to improve combustion efficiency or propulsion systems, aiming to generate thrust or thermal energy. They have never been reversed for the purification of mild, continuous industrial waste gases, let alone considered the complex operating conditions unique to poultry houses. More importantly, existing gas purification technologies all rely on the "chemical oxidation" pathway, i.e., the reaction of pollutants with free radicals. This pathway determines the inevitable formation of ozone and its sensitivity to humidity / dust.

[0003] Therefore, there is an urgent need for a new purification paradigm that fundamentally breaks away from the framework of "chemical oxidation," drives molecular decomposition with physical force fields, and can adapt to the extreme environment of poultry houses. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a poultry house air purification device and a poultry house air purification method.

[0005] The present invention provides an air purification device for poultry houses, comprising a shell, a curved guide wall assembly, a discharge array, and a quenching chamber;

[0006] The shell has air inlets on both sides for introducing polluted air, and a flow-guiding structure for providing negative pressure driving force is provided at the top front end.

[0007] The curved flow guide wall assembly, the discharge array, and the quenching cavity are arranged adjacent to each other at the inner bottom of the shell;

[0008] The curved guide wall assembly and the shell cooperate to form a Venturi-type focusing flow channel;

[0009] The Venturi-type focusing channel is connected to the quenching cavity through the gap on the discharge array;

[0010] The front end of the shell, together with the front partition of the quenching chamber and the drainage structure, forms a negative pressure chamber, and the negative pressure chamber is connected to the quenching chamber.

[0011] When the drainage structure provides the negative pressure driving force, the polluted air enters the interior of the housing from the air inlet, is accelerated by the Venturi-type focusing channel, and is decomposed into high-heat purified air by mechanochemical cracking under the discharge action of the discharge array. The high-heat purified air enters the quenching chamber, is recovered from heat, enters the negative pressure chamber, and is discharged through the drainage structure.

[0012] In one possible implementation, the air inlet is composed of a plurality of circular through holes;

[0013] The diameter of several of the circular through holes increases gradually from top to bottom.

[0014] In one possible implementation, a gas injection channel is provided on the curved guide wall assembly at the minimum cross-section of the throat of the Venturi-type focusing channel.

[0015] In one possible implementation, the discharge array includes several discharge modules arranged horizontally in a line, with the working surface of the discharge modules facing the air outlet of the Venturi-type focusing channel.

[0016] The discharge module includes a planar grounding electrode and several needle-shaped high-voltage electrodes;

[0017] Several of the needle-shaped high-voltage electrodes are located in the same plane and are parallel to the plane where the planar grounding electrode is located, and an insulating layer is provided between the two.

[0018] In one possible implementation, the rear partition of the quenching cavity is adjacent to the discharge array, and the rear partition is provided with a plurality of first through holes connecting the Venturi-type focusing channel and the quenching cavity.

[0019] The front partition plate has a second through hole that connects the quenching chamber and the negative pressure chamber.

[0020] In one possible implementation, a temperature and pressure sensor is provided on the front partition.

[0021] In one possible implementation, a slowing array is provided around the inlet of the Venturi-type focusing channel.

[0022] In one possible implementation, a gas sensing array is provided at the inlet of the Venturi-type focusing channel.

[0023] In one possible implementation, the drainage structure includes several bends;

[0024] Several of the aforementioned bent pipes are inserted through the top of the front end of the housing;

[0025] An S-shaped baffle is provided between the top of the front partition and the top of the front end of the housing;

[0026] The S-shaped baffle and the front top of the housing cooperate to form the negative pressure air outlet of the negative pressure chamber;

[0027] The negative pressure air outlet is connected to several of the aforementioned bends;

[0028] A fan is installed inside the bend.

[0029] The present invention also provides a method for purifying air in poultry houses, based on the poultry house air purification device described above, comprising the following specific steps:

[0030] The airflow structure provides negative pressure driving force, driving polluted air to flow from the air inlet into the interior of the housing;

[0031] The polluted air enters the Venturi-type focusing channel and is accelerated to form a premixed turbulent flow.

[0032] The discharge array is triggered to discharge, and quasi-detonation waves are periodically induced at the throat of the Venturi-type focusing channel. The transient extreme physical field generated by the quasi-detonation waves is used to perform mechanochemical cleavage on the pollutant molecules in the premixed vortex, forming high-heat purified air and outputting it to the quenching cavity.

[0033] The high-heat purified air is cooled through the quenching chamber to form cooled purified air, which is then output to the negative pressure chamber.

[0034] The cooling and purified air in the negative pressure chamber is discharged to the outside through the drainage structure.

[0035] The technical solution provided by this invention has at least the following beneficial effects:

[0036] No ozone generation: The pyrolysis mechanism is driven by a physical force field and is non-free radical oxidation, fundamentally eliminating the risk of ozone.

[0037] Resistant to high humidity and high dust: High-speed airflow and transient high temperature achieve self-cleaning, with no dust accumulation or water film on the electrodes;

[0038] Thorough purification: Mechanochemical pyrolysis can almost completely mineralize macromolecular pollutants into N2, CO2, H2O, etc.;

[0039] Uniform interlayer purification: Side air intake and gradient aperture design ensure balanced airflow across multiple layers;

[0040] Energy recovery: The heat released by pyrolysis is recovered through the quenching chamber, reducing the system's net energy consumption. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the structure of a poultry house air purification device after removing the top of the casing, as provided in the embodiments of this application;

[0042] Figure 2 This is a three-dimensional structural schematic diagram of an air purification device for poultry houses provided in an embodiment of this application;

[0043] Figure 3 This is a schematic diagram of the structure of the discharge array provided in the embodiment of this application;

[0044] Figure 4 This is a partial structural schematic diagram of the poultry house air purification device provided in the embodiments of this application;

[0045] Figure 5 This is a schematic diagram of the structure of a poultry house air purification device provided in this application after removing the main body of the shell;

[0046] Figure 6 This is a flowchart of a poultry house air purification method provided in an embodiment of this application;

[0047] In the attached diagram, 10 is the shell; 11 is the curved flow guide wall assembly; 12 is the discharge array; 13 is the quenching cavity; 14 is the flow guiding structure; 15 is the negative pressure cavity; 16 is the slow-speed array; 17 is the gas sensing array; 101 is the air inlet; 111 is the gas injection channel; 120 is the discharge module; 121 is the planar grounding electrode; 122 is the needle-shaped high-voltage electrode; 131 is the front partition; 132 is the rear partition; 133 is the first through hole; 134 is the second through hole; 141 is the bend; and 142 is the S-shaped baffle. Detailed Implementation

[0048] To enhance understanding of the present invention, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. These embodiments are only used to explain the invention and do not limit the scope of protection of the invention.

[0049] Please refer to Figures 1 to 5 The present invention provides a poultry house air purification device, comprising a shell 10, a curved flow guide wall assembly 11, a discharge array 12, and a quenching chamber 13;

[0050] The two side walls of the housing 10 are provided with air inlets 101 for introducing polluted air, and the top front end is provided with a flow-guiding structure 14 for providing negative pressure driving force.

[0051] The curved flow guide wall assembly 11, the discharge array 12, and the quenching cavity 13 are arranged adjacent to each other at the bottom of the housing 10.

[0052] The curved guide wall assembly 11 and the housing 10 cooperate to form a Venturi-type focusing flow channel;

[0053] The Venturi-type focusing channel is connected to the quenching cavity 13 through the gap on the discharge array 12;

[0054] The front end of the housing 10 cooperates with the front partition 131 of the quenching chamber 13 and the drainage structure 14 to form a negative pressure chamber 15, and the negative pressure chamber 15 is connected to the quenching chamber 13.

[0055] When the drainage structure 14 provides the negative pressure driving force, the polluted air enters the interior of the housing 10 from the air inlet 101, is accelerated by the Venturi-type focusing channel, and is decomposed into high-heat purified air by mechanochemical cracking under the discharge action of the discharge array 12. The high-heat purified air enters the quenching chamber 13, is recovered from heat, enters the negative pressure chamber 15, and is discharged through the drainage structure 14.

[0056] In this embodiment, the poultry house air purification device can be configured as a modular box structure, which can be directly installed at the exhaust end or inter-layer passage of a multi-story poultry house, suitable for three-dimensional cage rearing of broilers, laying hens, etc. The shell 10 can be made of 304 stainless steel or high-temperature resistant engineering plastics (such as PEEK), which have anti-corrosion, impact resistance and heat insulation properties. The curved guide wall assembly 11 can be composed of a pair of smooth inner curved guide walls, made of alumina ceramic or silicon carbide, with a temperature resistance >1500℃. The curved guide wall assembly 11 can form a Venturi-type focusing channel with the cooperation of the bottom and top surfaces of the shell 10. The cross-sectional area of ​​the Venturi-type focusing channel decreases continuously from the inlet to the throat, and the flow area at the minimum cross-section of the throat is 1 / 3-1 / 4 of that at the inlet, so that the airflow is accelerated to 2.5-4 times the inlet velocity when passing through, forming a highly premixed turbulent flow field. The discharge array 12 can be a nanosecond pulse high-power discharge array, located in the central region of the throat of the Venturi-type focusing channel, driven by a nanosecond pulse power supply (pulse width 150ns, peak power 80kW, pulse frequency 50-300Hz). Individual discharge units of the discharge array 12 can employ a needle-plate electrode structure. The curved guide wall assembly 11 and the discharge array 12 together form the core periodic quasi-detonation wave generating component. This periodic quasi-detonation wave generating component is the core processing unit of the poultry house air purification device, located in the central region inside the housing 10. The quenching chamber 13 is a quenching-heat recovery chamber located downstream of the quasi-detonation wave generating component. It is a cavity structure used to reduce gas flow rate and extend residence time. The inner wall of the quenching chamber 13 can be integrated with a water-cooling jacket, with adjustable cooling water flow rate, ensuring that the high-temperature gas after pyrolysis is rapidly quenched to ≤80℃ within 10ms, with a cooling rate ≥10. 4 K / s. The design of the quenching chamber 13 effectively suppresses the generation of secondary pollutants, while recovering some heat energy through heat exchange for winter heating or hot water supply in poultry houses. No catalyst is placed inside the quenching chamber 13, and the ozone concentration of the outlet gas is detected to be <0.01ppm, completely avoiding ozone safety risks. The drainage structure 14 can adopt a conventional structure that provides negative pressure and rain protection, such as a rainproof negative pressure duct (composed of a fan and a bent pipe). The purified gas in the negative pressure chamber 15 can flow upwards and be discharged through the rainproof negative pressure duct.

[0057] In one specific implementation, contaminated air enters the interior of the housing 10 through the air inlet 101, forming a high-speed contaminated airflow. When the high-speed contaminated airflow passes through the throat of the Venturi-type focusing channel, the nanosecond pulse power supply synchronously triggers the discharge array 12 to discharge, injecting high energy into the high-speed contaminated airflow in a very short time (<200ns), forming a local high-temperature plasma channel. Under the shearing of the high-speed airflow and the geometric constraint of the channel, the local high-temperature plasma channel rapidly evolves into an outwardly propagating shock-reaction coupling structure, i.e., a quasi-detonation wave. The shock-reaction coupling structure can be understood as a composite structure composed of a leading shock wave and a chemical reaction zone. The pressure at the leading edge of the quasi-detonation wave instantaneously jumps to ≥3atm, the temperature to ≥2000K, and the pressure gradient reaches 10. 6 The Pa / m order of magnitude. In this extreme physical field, ammonia (NH3), hydrogen sulfide (H2S), and VOCs... S The chemical bonds of molecules, such as NH, SH, and CC, are not oxidized by free radicals, but are directly broken by mechanical stress, breaking down into atoms such as N, H, S, and C, or small free radicals, which then rapidly recombine into harmless end products such as N2, H2O, and CO2. The protein coat and nucleic acid of pathogenic microorganisms (such as avian influenza viruses) also undergo irreversible denaturation and inactivation under instantaneous high-pressure impact. It should be noted that under the combined action of high-speed airflow (>20 m / s) at the throat of the Venturi-type focusing channel and periodic quasi-detonation waves (i.e., supersonic shock waves accompanied by chemical reactions), dust particles in the poultry house air purification device will be unable to adhere to the electrodes of the discharge array 12 or the walls of the Venturi-type focusing channel, achieving self-cleaning under all operating conditions, even when the relative humidity is ≥85% and the dust concentration is >10 mg / m³. 3 Even in extreme environments, the poultry house air purification device can operate continuously for 72 hours without performance degradation.

[0058] In one possible implementation, the air inlet 101 is composed of a plurality of circular through holes;

[0059] The diameter of several of the circular through holes increases gradually from top to bottom.

[0060] In this embodiment, the air inlet 101 is a side natural air intake structure on both side walls of the poultry house air purification device. The side natural air intake structure can be composed of circular through holes arranged in a matrix, with the diameter of the through holes increasing in a gradient from top to bottom. In a specific implementation, such as... Figure 1 and Figure 2The housing 10 can be divided into a top section and a main body section. The circular through-holes on the main body section of the housing 10 can be divided into three layers: upper, middle, and lower. The diameter of the upper layer circular through-holes can be set to 20-30 mm, the middle layer to 30-40 mm, and the lower layer to 35-50 mm. The diameter of the circular through-holes at the top of the housing 10 can be set to 5-15 mm. The side-mounted natural air intake structure effectively compensates for the difference in negative pressure gradient between layers caused by the negative pressure drainage at the top, ensuring that polluted air (containing high concentrations of ammonia and dust) at the bottom can also be fully drawn in. In practical implementation, the porosity can be designed to be 35%–45% based on the total system airflow to balance air intake resistance and airflow uniformity.

[0061] In one possible implementation, a gas injection channel 111 is provided on the curved guide wall assembly 11 at the minimum cross-section of the throat of the Venturi-type focusing channel.

[0062] In this embodiment, the gas injection channel 111 may consist of several longitudinally arranged micro-holes for introducing a small amount of water vapor (flow rate 0.5-1L / min). The hole diameter can be adjusted according to actual implementation needs. In specific implementation, several corresponding gas pipes can be installed through the gas injection channel 111 to connect with an external water vapor supply device, thereby introducing external water vapor.

[0063] In one possible implementation, such as Figure 3 The discharge array 12 includes several discharge modules 120 arranged horizontally in a line, and the working surface of the discharge module 120 faces the air outlet of the Venturi-type focusing channel.

[0064] The discharge module 120 includes a planar grounding electrode 121 and a plurality of needle-shaped high-voltage electrodes 122;

[0065] Several of the needle-shaped high-voltage electrodes 122 are located on the same plane and are parallel to the plane where the planar grounding electrode 121 is located, and an insulating layer is provided between the two.

[0066] In this embodiment, the planar grounding electrode 121 in the discharge module 120 (i.e., the discharge unit) is a planar grounding electrode, specifically a planar graphite plate. The needle-shaped high-voltage electrode 122 is a needle-shaped high-voltage electrode, specifically a tungsten-copper alloy needle (needle tip curvature radius ≤ 0.1 mm). Several needle-shaped high-voltage electrodes 122 are arranged in an array on the same plane (denoted as the high-voltage plane). The high-voltage plane is parallel to the plane containing the planar grounding electrode 121 (denoted as the grounding plane). The distance between the high-voltage plane and the grounding plane can be set to 5 mm. An insulating layer can be disposed on the surface of the planar grounding electrode 121, specifically a 200 μm thick Al2O3 ceramic insulating layer.

[0067] In one possible implementation, such as Figure 4 The rear partition plate 132 of the quenching cavity 13 is adjacent to the discharge array 12, and the rear partition plate 132 is provided with a plurality of first through holes 133 connecting the Venturi-type focusing channel and the quenching cavity 13.

[0068] The front partition 131 has a second through hole 134 that connects the quenching chamber 13 and the negative pressure chamber 15.

[0069] In this embodiment, the first through hole 133 and the second through hole 134 are both conventional through holes, and their specific number and size can be determined according to actual implementation needs.

[0070] In one possible implementation, a temperature and pressure sensor is provided on the front partition 131.

[0071] In this embodiment, the temperature and pressure sensor is used to realize temperature and pressure detection. It can be implemented by a combination of conventional temperature and pressure sensors, or by a conventional composite sensor that integrates temperature and pressure detection functions.

[0072] In one possible implementation, such as Figure 1 A slowing array 16 is provided around the inlet of the Venturi-type focusing channel.

[0073] In this embodiment, the slow array 16 can be formed by stacking several rectangular hollow blocks, which facilitates reducing the wind speed at the inlet of the Venturi-type focusing channel.

[0074] In one possible implementation, a gas sensing array 17 is provided at the inlet of the Venturi-type focusing channel.

[0075] In this embodiment, the gas sensing array 17 is a combination of various types of sensors, which is used to collect the gas concentration (such as NH3, H2S), dust content, temperature and humidity, etc. at the inlet of the Venturi-type focusing flow channel in real time when the poultry house air purification device is operating. The poultry house air purification device is equipped with a central controller. The central controller can execute a dynamic regulation strategy according to the data collected by the gas sensing array 17. The dynamic regulation strategy can ensure the optimal cracking efficiency under different pollution loads. For example: when NH3 ≤ 10 ppm, the central controller can set the pulse frequency of the nanosecond pulse power supply to 50 - 100 Hz, and the fan speed is maintained at 1200 rpm, and the poultry house air purification device is in a low-energy consumption cruising state; when 10 ppm < NH3 ≤ 25 ppm, the central controller can increase the pulse frequency of the nanosecond pulse power supply to 150 - 300 Hz, and at the same time open the gas injection channel 111 to introduce a small amount of water vapor (flow rate 0.5 - 1 L / min) to reduce the quasi-detonation trigger threshold; when NH3 > 25 ppm, the pulse energy is increased to 100 J / pulse to ensure that the success rate of quasi-detonation wave induction is ≥ 95% and maintain the purification efficiency under high load.

[0076] In one possible implementation, the drainage structure 14 includes a plurality of elbow pipes 141;

[0077] A plurality of the elbow pipes 141 are arranged through the front top of the housing 10;

[0078] An S-shaped baffle 142 is arranged between the top of the front partition 131 and the front top of the housing 10;

[0079] The S-shaped baffle 142 and the front top of the housing 10 cooperate to form the negative pressure air outlet of the negative pressure chamber 15;

[0080] The negative pressure air outlet is communicated with a plurality of the elbow pipes 141;

[0081] A fan is arranged inside the elbow pipe 141.

[0082] In this embodiment, the elbow pipe 141 is in an "L" shape or a "snail shell" shape, and the outlet direction is away from the local dominant rainfall direction (such as towards the northwest in the southeast coastal area), which can effectively prevent rainwater backflow. The fan integrated inside the elbow pipe 141 can be a brushless DC fan (power 120 - 300 W, adjustable speed 0 - 3000 rpm), which is synchronously adjusted by the central controller according to the pulse frequency of the nanosecond pulse power supply to maintain the best residence time window (0.5 - 2 ms) of the gas in the quasi-detonation area and ensure that each pulse can effectively induce quasi-detonation.

[0083] Such as Figure 6 , the present invention also provides a poultry house air purification method, which is realized based on the above-mentioned poultry house air purification device, and includes the following specific steps:

[0084] S100: The negative pressure driving force provided by the diversion structure 14 drives the polluted air from the air inlet 101 into the interior of the housing 10.

[0085] S200: The polluted air enters the Venturi-type focusing channel and is accelerated to form a premixed turbulent flow;

[0086] S300: Trigger the discharge array 12 to discharge, periodically induce quasi-detonation waves at the throat of the Venturi-type focusing channel, and use the transient extreme physical field generated by the quasi-detonation waves to perform mechanochemical cleavage on the pollutant molecules in the premixed vortex to form high-heat purified air and output it to the quenching cavity 13.

[0087] S400: The high-heat purified air is cooled by the quenching chamber 13 to form cooled purified air, which is then output to the negative pressure chamber 15.

[0088] S500: The cooling and purified air in the negative pressure chamber 15 is discharged to the outside through the drainage structure 14.

[0089] In practice, the diversion structure 14 is activated first, creating a stable negative pressure gradient from the side to the top within the shell 10. This gradient drives polluted gas (considered as polluted air) from the multi-layer poultry house to flow evenly into the house through the side natural air intake structure. After entering the Venturi-type focusing channel, the polluted gas is accelerated at the throat, forming premixed turbulence. The discharge array 12 is synchronously triggered to achieve nanosecond pulse high-power discharge, periodically inducing quasi-detonation waves at the throat. The transient extreme physical field generated by the quasi-detonation waves is used to perform mechanochemical cleavage of the pollutant molecules. The cleaved high-temperature gas (considered as high-heat purified air) enters the quenching-heat recovery chamber 13, where it is rapidly cooled to ≤80℃. The heat energy is recovered through water cooling or finned cooling. Finally, the purified gas (considered as cooled purified air) is discharged outdoors through a rainproof negative pressure duct.

[0090] The above embodiments should not limit the present invention in any way. All technical solutions obtained by equivalent substitution or equivalent conversion fall within the protection scope of the present invention.

Claims

1. An air purification device for a poultry house, characterized in that The shell, the curved flow guide wall group, the discharge array and the quenching cavity are sequentially arranged in the inner bottom of the shell. The two side walls of the shell are provided with air inlets for introducing polluted air, and the top of the front end of the shell is provided with a flow guide structure for providing negative pressure driving force. The curved flow guide wall group and the shell cooperatively form a Venturi type focusing flow channel. The Venturi type focusing flow channel is in communication with the quenching cavity through the gaps on the discharge array. The front end of the shell, the front partition plate of the quenching cavity and the flow guide structure cooperatively form a negative pressure cavity, and the negative pressure cavity is in communication with the quenching cavity. When the flow guide structure provides the negative pressure driving force, the polluted air enters the inside of the shell from the air inlets, is accelerated in the Venturi type focusing flow channel, is decomposed into high-temperature purified air under the discharge action of the discharge array based on force chemical cracking, enters the quenching cavity after heat recovery, enters the negative pressure cavity, and is discharged through the flow guide structure. The air inlets are composed of a plurality of circular through holes.

2. The poultry house air purification device according to claim 1, characterized in that, The diameters of the plurality of circular through holes increase from top to bottom. The curved flow guide wall group at the throat part of the Venturi type focusing flow channel is provided with a gas injection channel.

3. The poultry house air purification apparatus according to claim 1, characterized in that, The discharge array includes a plurality of discharge modules arranged in a horizontal line, and the working surface of the discharge module faces the air outlet of the Venturi type focusing flow channel.

4. The poultry house air purification apparatus according to claim 1, characterized in that, The discharge module includes a plane ground electrode and a plurality of needle-shaped high-voltage electrodes. The plurality of needle-shaped high-voltage electrodes are in the same plane and parallel to the plane in which the plane ground electrode is located, and an insulating layer is arranged between the two. The rear partition plate of the quenching cavity is adjacent to the discharge array, and a plurality of first through holes are arranged on the rear partition plate to communicate the Venturi type focusing flow channel and the quenching cavity.

5. The poultry house air purification apparatus according to claim 1, characterized in that, The front partition plate is provided with a second through hole to communicate the quenching cavity and the negative pressure cavity. The front partition plate is provided with a temperature and pressure sensor.

6. The poultry house air purification device according to claim 5, characterized in that The periphery of the inlet of the Venturi type focusing flow channel is provided with a deceleration array.

7. The poultry house air purification apparatus according to claim 1, characterized in that, The inlet of the Venturi type focusing flow channel is provided with a gas sensing array.

8. The poultry house air purification apparatus according to claim 1, characterized in that, The flow guide structure includes a plurality of elbow pipes.

9. The poultry house air purification apparatus according to claim 1, characterized in that, The plurality of elbow pipes are arranged in the top of the front end of the shell. An S-shaped baffle is arranged between the top of the front partition plate and the top of the front end of the shell. The S-shaped baffle and the top of the front end of the shell cooperatively form a negative pressure air outlet of the negative pressure cavity. The negative pressure air outlet is in communication with the plurality of elbow pipes. A fan is arranged in the elbow pipe. The following specific steps are included:

10. A method for purifying air in a poultry house, implemented based on the poultry house air purification device according to any one of claims 1 to 9, characterized in that, The flow guide structure provides negative pressure driving force to drive polluted air to flow into the inside of the shell from the air inlets. The polluted air enters the Venturi type focusing flow channel and forms a premixed turbulent flow after acceleration. The discharge array is triggered to discharge, a quasi-detonation wave is periodically induced at the throat part of the Venturi type focusing flow channel, force chemical cracking is implemented on the pollutant molecules in the premixed turbulent flow by using the transient extreme physical field generated by the quasi-detonation wave, high-temperature purified air is formed and output to the quenching cavity. ​ The high-heat purified air is cooled by the quenching cavity to form cooled purified air and output to the negative pressure cavity; The cooled purified air in the negative pressure cavity is discharged to the outdoor through the drainage structure.

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