CN113100077A - Pigsty ventilation system with exhaust treatment function and ventilation method - Google Patents

Pigsty ventilation system with exhaust treatment function and ventilation method Download PDF

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Publication number
CN113100077A
CN113100077A CN202110465764.8A CN202110465764A CN113100077A CN 113100077 A CN113100077 A CN 113100077A CN 202110465764 A CN202110465764 A CN 202110465764A CN 113100077 A CN113100077 A CN 113100077A
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CN
China
Prior art keywords
air
pigsty
side wall
trench
wet curtain
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Pending
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CN202110465764.8A
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Chinese (zh)
Inventor
郑炜超
邓森中
李宗刚
张志豪
李保明
王阳
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China Agricultural University
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China Agricultural University
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Priority to CN202110465764.8A priority Critical patent/CN113100077A/en
Publication of CN113100077A publication Critical patent/CN113100077A/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K1/00—Housing animals; Equipment therefor
    • A01K1/0047—Air-conditioning, e.g. ventilation, of animal housings
    • A01K1/0064—Construction of air inlets or outlets in walls
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K1/00—Housing animals; Equipment therefor
    • A01K1/0047—Air-conditioning, e.g. ventilation, of animal housings
    • A01K1/0082—Water misting or cooling systems
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K1/00—Housing animals; Equipment therefor
    • A01K1/015—Floor coverings, e.g. bedding-down sheets ; Stable floors
    • A01K1/0151—Grids; Gratings; Slatted floors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
    • A61L9/04—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating
    • A61L9/12—Apparatus, e.g. holders, therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/14—Disinfection, sterilisation or deodorisation of air using sprayed or atomised substances including air-liquid contact processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/06—Spray cleaning
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/20—Method-related aspects
    • A61L2209/21—Use of chemical compounds for treating air or the like
    • A61L2209/212—Use of ozone, e.g. generated by UV radiation or electrical discharge
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/20—Method-related aspects
    • A61L2209/21—Use of chemical compounds for treating air or the like
    • A61L2209/213—Use of electrochemically treated water, e.g. electrolysed water or water treated by electrical discharge

Abstract

The invention relates to a pigsty ventilation system with exhaust treatment and a ventilation method, comprising the following steps: the ceiling consists of a roof and a suspended ceiling, a plurality of air inlets are arranged on the suspended ceiling, and air inlet doors with adjustable angles are arranged at the air inlets; the wet curtain is arranged on the outer side wall, a plurality of side wall air inlet windows are arranged between the top end of the inner side wall and the roof, and the side wall air inlet windows are positioned above the suspended ceiling; the wet curtain, the side wall air inlet window and the air inlet form an air inlet channel together; the trench is arranged below the suspended ceiling, a slotted floor is erected above the trench and configured to discharge excrement and air in the pigsty into the trench, a trench fan is arranged in the trench, and the trench fan is communicated with the outside atmosphere through an exhaust channel. The pigsty is preheated by air inlet in winter, so that the cold stress of the pigs is reduced; and the concentration of harmful pollutants in the house is reduced through ventilation optimization.

Description

Pigsty ventilation system with exhaust treatment function and ventilation method
Technical Field
The invention relates to a pigsty ventilation system with an exhaust treatment function and a ventilation method, and belongs to the field of facility agricultural engineering.
Background
The modern large-scale live pig breeding mostly adopts a fully-closed pigsty, the breeding density is high, and the production efficiency is high. The environment in the pigsty is an important factor influencing the health and high-efficiency production of pigs, and ventilation is the most important means for controlling the environment of the pigsty. At present, most pigsties adopt a longitudinal ventilation mode, wherein a gable wet curtain at one end supplies air, and a gable fan at the other end exhausts air. However, with the increasing of the feeding amount and the breeding density of a single pigsty, the problems of healthy breeding and environmental pollution of pigs are increasingly emphasized, and the defects of the ventilation system of the conventional pigsty are highlighted. The main performance is as follows: the uniformity of the temperature of the pigsty is poor. Because the longitudinal distance is longer, the temperature of the pigsty rises gradually from the air inlet gable to the air exhaust gable, so that the temperature difference between the front and the back in the pigsty is larger. Secondly, the temperature of inlet air is low in winter, and the pig directly enters the house without preheating, so that the pig is easily subjected to cold stress. The temperature of fresh air entering a pigsty in winter is low, and a low-temperature area is easily formed, so that pigs in the area suffer from cold stress, the health of the pigs is influenced, and the production efficiency of the pigs is reduced. And thirdly, the concentration of harmful gas in the house is high, and the air quality is poor. Excrement is the main source of harmful gas and air microorganism in the house, and outside pig house excrement and urine passed through the leak floor and the ditch discharge house, harmful gas and air microorganism got into in the house can increase harmful gas concentration and air microorganism concentration in the ditch, are unfavorable for that the pig is healthy. High concentration of air pollutants discharged from the piggery and great environmental hazard, and the emission of pathogenic microorganisms in the air pollutants can influence the biological safety of the field and the surrounding environment. The air of the piggery contains a large amount of harmful gases such as ammonia gas, odor and the like, and a large amount of air particles and microorganisms. Harmful gas, air particles and microorganisms are directly discharged to the outside of the pigsty through a ventilation system of the pigsty, so that the field and the surrounding environment are polluted, and the biological safety of the field and the surrounding environment is threatened by the pathogenic microorganisms.
Disclosure of Invention
Aiming at the outstanding problems, the invention provides a pigsty ventilation system with air exhaust treatment and a ventilation method, aiming at improving the uniformity of the temperature distribution of the pigsty by reasonably arranging an air inlet and an air outlet; the cold stress of the pigs is reduced by the inlet air preheating in winter; the concentration of harmful pollutants in the house is reduced through ventilation optimization; and harmful pollutant emission is reduced through air exhaust treatment.
In order to achieve the purpose, the invention adopts the following technical scheme:
a pigsty ventilation system with exhaust treatment, comprising:
the ceiling is composed of a roof and a suspended ceiling, a plurality of air inlets are formed in the suspended ceiling, and air inlet doors with adjustable angles are arranged at the air inlets;
the wet curtain room is composed of a space between an outer side wall and an inner side wall, the wet curtain is arranged on the outer side wall, a plurality of side wall air inlet windows are arranged between the top end of the inner side wall and the roof, and the side wall air inlet windows are positioned above the suspended ceiling; the wet curtain, the side wall air inlet window and the air inlet form an air inlet channel together;
the trench, set up in the below of furred ceiling, the top of trench is erect and is equipped with the slotted floor, the slotted floor is configured to discharge excrement and urine and the air in the pig house in the trench, be provided with the trench fan in the trench, the trench fan passes through exhaust passageway and external atmosphere intercommunication.
In the ventilation system for the pigsty, preferably, an air outlet end of the air exhaust channel is provided with an air treatment device, and the air treatment device is configured to purify air discharged from the inner pigsty and discharge the air into the external atmosphere.
Pig house ventilation system, preferably, air treatment facilities includes honeycomb duct, clean system and water circulating system, the inlet end of honeycomb duct pass through the exhaust fan with the end of giving vent to anger of the passageway of airing exhaust is connected, the end of giving vent to anger of honeycomb duct with clean system's input is connected, clean system's output and external atmosphere intercommunication, water circulating system's input and output respectively with the delivery port of honeycomb duct and shower nozzle in the clean system is connected.
The pig house ventilation system, preferably, clean system includes a plurality of wet curtain modules that distribute in proper order by supreme down and sprays the module, is located the top spray the top of module and install the defroster, ozone generator is installed to the top of defroster, wet curtain module with spray the module and be configured as dust, ammonia, sulphide and kill harmful bacterium in purifying the pig house in the air, ozone generator is configured as ionization and oxidation foul smell.
Pig house ventilation system, preferably, wet curtain module includes wet curtain of first layer and the wet curtain of second floor, the module that sprays includes first layer shower nozzle and second floor shower nozzle, the wet curtain of first layer is installed the end of giving vent to anger of honeycomb duct, the first layer shower nozzle is installed the top of the wet curtain of first layer, the wet curtain of second floor is installed the top of first layer shower nozzle, the shower nozzle of second floor is installed the top of the wet curtain of second floor.
The pig house ventilation system, preferably, water circulating system includes filter, water tank, water pump and sour case, the input of filter with the delivery port is connected, the output of filter with the entry linkage of water tank, the export of water tank with the input of water pump is connected, the output of water pump with the input of spraying the module is connected, the export of sour case with the entry linkage of water tank.
The pigsty ventilation system is characterized in that a passageway is preferably arranged in the pigsty along the length direction of the pigsty, one side of the passageway is provided with one trench, the other side of the passageway is connected with the inner side wall, or the pigsty is provided with one passageway along the length direction of the pigsty, and two trenches are symmetrically arranged on two sides of the passageway;
interior side wall the outer side wall with the wet curtain is injectd jointly to the side wall air inlet window between, the furred ceiling the roof with the side wall air inlet window is injectd jointly between the ceiling, between the wet curtain with be provided with a plurality of baffles along pig house length direction interval between the ceiling, the baffle will between the wet curtain with cut apart into a plurality of pig house units, every between the ceiling evenly distributed in the pig house unit wet curtain the side wall air inlet window the air intake with the trench fan.
The pigsty ventilation system is preferably provided with an independent control system for each pigsty unit, and the control system is configured to adjust the air volume, the humidity and the temperature of each pigsty unit.
The pigsty ventilation system is characterized in that an axial flow fan is preferably arranged on a gable wall at one end of the pigsty, a differential pressure sensor is further arranged on the axial flow fan, an air speed sensor is arranged at an air outlet of the trench fan, and the differential pressure sensor and the air speed sensor are both connected with the control system.
Based on the pigsty ventilation system, the invention also provides a ventilation method of the pigsty ventilation system, which comprises the following steps:
air firstly enters a space between the inner side wall and the outer side wall through the wet curtain, then enters the ceiling space through the side wall air inlet window, and then enters the pig house through the air inlet, because of negative pressure formed by the trench fan in the trench, the air above the trench enters the trench, and then is discharged into the air exhaust channel together with the air in the trench, and finally the air enters the air treatment device through the air exhaust channel, and the air treatment device discharges the purified air into the external atmosphere.
Due to the adoption of the technical scheme, the invention has the following advantages:
1. the unit type roof air inlet mode can preheat fresh air, prevents cold air from directly reaching pigs, can solve the problems of uneven temperature distribution in the vertical direction in a pig house and cold stress of the pigs caused by the cold air in winter, and can control the sizes of water pump switches and air doors of different ventilation units according to the longitudinal temperature distribution condition in the pig house to ensure the uniformity of longitudinal temperature distribution.
2. According to the ventilation mode of the trench fan, the air quantity of the trench fan is controlled, so that sufficient negative pressure is formed in the trench, harmful gases, germs and the like in the trench are prevented from volatilizing into the pigsty, and the good air environment in the pigsty is guaranteed.
3. The air treatment method based on the trench fan enables most harmful gases in the pigsty to be discharged through the trench, treats the exhaust air of the trench, has relatively small treatment air amount, and is beneficial to reducing the cost. Meanwhile, harmful gases and microorganisms in the discharged air can be purified through the air treatment device based on the subacid electrolyzed water and the ozone generator, the environment pollution of the pigsty tail gas is prevented, meanwhile, the subacid electrolyzed water and the ozone have no secondary pollution to the environment, and the green and environment-friendly production of the pigsty can be really realized.
Drawings
Fig. 1 is an overall schematic view of a pigsty ventilation system according to an embodiment of the present invention;
FIG. 2 is a partial schematic view of a ventilation system for a pigsty according to the embodiment of the present invention;
FIG. 3 is a schematic view of a partition control of a ventilation system for a pigsty according to the embodiment of the present invention;
FIG. 4 is a schematic view showing the internal structure of an air treatment apparatus in a ventilation system of a pig house according to the embodiment of the present invention;
the reference numerals in the figures are as follows:
1-inner side wall; 2-an outer side wall; 3, hanging the ceiling; 4-a roof; 5, wet curtain; 6-side wall air inlet window; 7-air inlet; 8-air intake door; 9-ceiling space; 10-wet curtain space; 11-trench; 12-circled rail; 13-a slatted floor; 14-a trench fan; 15-an exhaust channel; 16-a separator; 17-air treatment device, 1701-flow guide pipe, 1702-first layer wet curtain, 1703-first layer spray head, 1704-second layer wet curtain, 1705-second layer spray head, 1706-demister, 1707-ozone generator, 1708-waterproof hood, 1709-water outlet, 1710-filter, 1711-water tank, 1712-water pump, 1713-metering pump and 1714-acid tank; 18-an axial fan; 19-exhaust fan.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention are described clearly and completely below, and it is obvious that the described embodiments are some, not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. As used herein, the terms "upper," "lower," "first," "second," and the like do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
The invention provides a pigsty ventilation system with exhaust treatment, which comprises:
the ceiling consists of a roof 4 and a suspended ceiling 3, a plurality of air inlets 7 are arranged on the suspended ceiling 3, and air inlet doors 8 with adjustable angles are arranged at the air inlets 7;
the wet curtain structure comprises a wet curtain room 10 and wet curtains 5, wherein the wet curtain room 10 is composed of a space between an outer side wall 2 and an inner side wall 1, the wet curtains 5 are arranged on the outer side wall 2, a plurality of side wall air inlet windows 6 are arranged between the top end of the inner side wall 1 and a roof 4, and the side wall air inlet windows 6 are positioned above a suspended ceiling 3; the wet curtain 5, the side wall air inlet window 6 and the air inlet 7 form an air inlet channel together;
the trench 11 is arranged below the suspended ceiling 3, a leaky floor 13 is erected above the trench 11, the leaky floor 13 is configured to discharge excrement and air in the pigsty into the trench 11, a trench fan 14 is arranged in the trench 11, and the trench fan 14 is communicated with the outside atmosphere through an exhaust channel. The unit type roof air inlet mode can preheat fresh air, prevents cold air from directly reaching pigs, can solve the problems of uneven temperature distribution in the vertical direction in a pig house and cold stress of the pigs caused by the cold air in winter, and can control the sizes of water pumps and air doors of different ventilation units according to the longitudinal temperature distribution condition in the pig house to ensure the uniformity of longitudinal temperature distribution.
In a preferred embodiment of the present invention, the air outlet end of the exhaust channel 15 is provided with an air treatment device 17, and the air treatment device 17 is configured to filter air discharged from the pigsty and discharge the filtered air into the external atmosphere.
In a preferred embodiment of the present invention, the air treatment device 17 includes a flow guide pipe 1701 (preferably made of acrylic material), a purification system and a water circulation system, wherein an air inlet end of the flow guide pipe 1701 is connected with an air outlet end of the air exhaust channel 15 through an exhaust fan 19, the air outlet end of the flow guide pipe 1701 is connected with an input end of the purification system, an output end of the purification system is communicated with the outside atmosphere, and the input end and the output end of the water circulation system are respectively connected with an water outlet 1709 of the flow guide pipe 1701 and a spray head in the purification system. The invention utilizes the air treatment device to treat the gas exhausted by the trench fan 14, which can reduce the treated air quantity, can reduce 90% of the air treatment quantity in summer, and is beneficial to reducing energy consumption and saving cost. The air treatment device 17 treats the discharged air through two layers of wet curtains and high-voltage static electricity: slightly acidic electrolyzed water is used as wet curtain spraying liquid to purify dust, ammonia gas and hydrogen sulfide in the gas and kill harmful bacteria; the high voltage generated by the ozone generator 1707 and the generated ozone ionizes and oxidizes odors (organic macromolecules). Meanwhile, a waterproof hood 1708 is arranged on the uppermost portion of the air treatment device 17 to prevent rainwater from entering the treatment device.
In a preferred embodiment of the present invention, the purification system comprises a plurality of wet curtain modules (cellular plastic wet curtains) and spraying modules alternately distributed from bottom to top, a demister 1706 (for preventing water vapor from passing) is installed above the spraying module located at the uppermost end, an ozone generator 1707 is installed above the demister 1706, the wet curtain modules and the spraying modules are configured to purify dust, ammonia gas and sulfide in the air in the pigsty and kill harmful bacteria, and the ozone generator 1707 is configured to ionize and oxidize odor.
In a preferred embodiment of the present invention, the wet curtain module comprises a first layer of wet curtain 1702 and a second layer of wet curtain 1704, the spraying module comprises a first layer of spraying nozzles 1703 and a second layer of spraying nozzles 1705, the first layer of wet curtain 1702 is installed at the air outlet end of the draft tube 1701, the first layer of spraying nozzles 1703 are installed above the first layer of wet curtain 1702, the second layer of wet curtain 1704 is installed above the first layer of spraying nozzles 1703, and the second layer of spraying nozzles 1705 are installed above the second layer of wet curtain 1704. The number of the spray heads in the spray module can be increased or decreased according to the actual situation.
In a preferred embodiment of the present invention, the water circulation system includes a filter 1710, a water tank 1711, a water pump 1712, and an acid tank 1714 (for recovering acid and providing slightly acidic electrolyzed water, which is connected by an acid-resistant plastic water pipe), an input end of the filter 1710 is connected to the water outlet 1709, an output end of the filter 1710 is connected to an inlet of the water tank 1711, an outlet of the water tank 1711 is connected to an input end of the water pump 1712, an output end of the water pump 1712 is connected to an input end of the spray module, and an outlet of the acid tank 1714 is connected to an inlet of the water tank 1711. In this embodiment, acid liquor after spraying flows back to water tank 1711 through filter 1710, and then water pump 1712 transports acidizing fluid to the shower nozzle once more, realizes cyclic utilization, and when the PH in water tank 1711 was higher, in pumping into water tank 1711 with slightly acidic electrolysis water through measuring pump 1713, the PH value of acidizing fluid in messenger's water tank 1711 was in suitable range, guarantees treatment effect.
In a preferred embodiment of the invention, the pigsty is provided with a passageway along the length direction, one side of the passageway is provided with a trench 11, the other side of the passageway is connected with the inner side wall 1, or the inner pigsty is provided with a passageway along the length direction, and two trenches 11 are symmetrically arranged at two sides of the passageway;
interior side wall 1, outer side wall 2 and side wall air inlet window 6 inject wet curtain room 10 jointly, 9 between the ceiling are injectd jointly to furred ceiling 3, roof 4 and side wall air inlet window 6, 9 are provided with a plurality of baffles along pig house length direction interval between wet curtain room 10 and ceiling, the baffle will be divided into a plurality of pig house units between wet curtain room 10 and ceiling 9, evenly distributed has wet curtain 5, side wall air inlet window 6, air intake 7 and trench fan 14 in every pig house unit.
According to the invention, cold air enters the pigsty after entering the side wall air inlet window 6 and is mixed with roof air, so that fresh cold air is preheated by fully utilizing the heat of the upper space of the pigsty, and cold stress of the pigs caused by the fact that low-temperature air directly reaches the surfaces of the pigs is avoided. Meanwhile, the wet curtain 5, the air inlet 7 and the trench fan 14 are divided into a plurality of partition units, each unit can be independently controlled, each partition can be independently controlled according to the temperature of each partition when the ventilation system runs, the size of the air inlet 7 is changed, the wet curtain 5 is opened or closed, the temperature in each partition is regulated and controlled, and the temperature uniformity in the house is improved.
The wet curtain water pump, the air inlet door 8 and the trench fan 14 of each unit can be independently controlled according to the temperature value of the partition. In summer, the wet curtain water pump is opened to cool down to control the wet curtain 5 and the 8 divisions of air inlet door of every unit according to each unit temperature distribution condition in the house and improve temperature uniformity in the house: when the temperature is lower than the optimal temperature range, the motor is controlled to reduce the opening angle of the air inlet door 8, the cold air inlet amount of the unit is reduced, the air speed at the wet curtain 5 is monitored, in order to ensure the minimum ventilation amount of the unit, when the air speed is too small, the angle of the air inlet door 8 is stopped to be further reduced, and the wet curtain water pump of the unit is intermittently opened and closed to reduce the cold air inlet amount; when the temperature is higher than the optimal temperature range, the motor is controlled to increase the opening angle of the air inlet door 8, the air inlet amount of cold air is increased, and meanwhile, the opening angles of the air inlet doors 8 of other units are properly reduced (the temperature of other units is still in the optimal temperature range). When the temperature of the subareas is lower than the optimal temperature range, the motor is controlled to reduce the opening angle of the air inlet door 8, reduce the ventilation quantity and reduce the cold air inlet quantity; when the temperature of the subarea is higher than the optimal temperature range, the opening angle of the air inlet door 8 is increased by controlling the motor, the ventilation volume is increased, and the cold air inlet volume is increased. In a preferred embodiment of the present invention, the center points of the wet curtain 5, the side wall air inlet window 6 and the air inlet 7 are located on the same axis, and each pigsty unit is provided with an independent control system configured to adjust the air volume, humidity and temperature of each pigsty unit.
In a preferred embodiment of the present invention, an axial flow fan 18 is disposed at one end of the gable wall, a differential pressure sensor is further disposed on the axial flow fan 18, an air speed sensor is disposed at an air outlet of the trench fan 14, and both the differential pressure sensor and the air speed sensor are connected to the control system. The ventilation volume of the axial flow fan 18 and the ventilation volume of the trench fan 14 can be respectively calculated by arranging a differential pressure sensor and a wind speed sensor. In spring, summer and autumn, the ventilation volume of the pigsty is large, and the pigsty is mainly ventilated through the axial flow fan 18. During ventilation, enough axial flow fans 18 are started to ensure the necessary ventilation quantity in the house, meanwhile, the trench fans 14 are started, the anemograph is used for monitoring the wind speed, the ventilation quantity of the trench fans 14 in summer is at least 10% of the total ventilation quantity, the ventilation quantity of the trench fans 14 in spring and autumn is 30% of the total ventilation quantity, and therefore more than 60% of harmful gas in the trench 11 can be discharged through the trench 11; in winter, the axial flow fan 18 is closed, and the air in the piggery is completely discharged through the trench fan 14, so that harmful gas in the trench 11 is prevented from entering the piggery.
Based on the pigsty ventilation system, the invention also provides a ventilation method of the pigsty ventilation system, which comprises the following steps:
air firstly enters a wet curtain room 10 between the inner side wall 1 and the outer side wall 2 through a wet curtain 5, then enters a ceiling room 9 through a side wall air inlet window 6, then enters the pig house through an air inlet 7, air above the trench 11 enters the trench 11 due to negative pressure formed by a trench fan 14 in the trench 11, then is discharged into an exhaust channel 15 together with air in the trench 11, finally the air enters an air treatment device 17 through the exhaust channel 15, and the air treatment device 17 discharges purified air into the external atmosphere.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides a pig house ventilation system of processing is aired exhaust in area which characterized in that includes:
the ceiling is composed of a roof (4) and a suspended ceiling (3), a plurality of air inlets (7) are formed in the suspended ceiling (3), and air inlet doors (8) with adjustable angles are arranged at the air inlets (7);
the wet curtain structure comprises a wet curtain room (10) and wet curtains (5), wherein the wet curtain room (10) is composed of a space between an outer side wall (2) and an inner side wall (1), the wet curtains (5) are arranged on the outer side wall (2), a plurality of side wall air inlet windows (6) are arranged between the top end of the inner side wall (1) and the roof (4), and the side wall air inlet windows (6) are positioned above the suspended ceiling (3); the wet curtain (5), the side wall air inlet window (6) and the air inlet (7) form an air inlet channel together;
trench (11), set up in the below of furred ceiling (3), leaky floor (13) have been erect to the top of trench (11), leaky floor (13) are configured as and are arranged into excrement and urine and the air in the pig house and go into in trench (11), be provided with trench fan (14) in trench (11), trench fan (14) are through exhaust passageway and external atmosphere intercommunication.
2. The ventilation system for a pigsty according to claim 1, characterized in that an air outlet end of the air exhaust channel (15) is provided with an air treatment device (17), and the air treatment device (17) is configured to purify the air exhausted from the inner pigsty and exhaust the air into the external atmosphere.
3. The pigsty ventilation system according to claim 2, characterized in that the air treatment device (17) comprises a draft tube (1701), a purification system and a water circulation system, wherein the inlet end of the draft tube (1701) is connected with the outlet end of the exhaust channel (15) through an exhaust fan (19), the outlet end of the draft tube (1701) is connected with the inlet end of the purification system, the outlet end of the purification system is communicated with the outside atmosphere, and the inlet end and the outlet end of the water circulation system are respectively connected with the outlet (1709) of the draft tube (1701) and the spray head in the purification system.
4. The ventilation system for pigsty according to claim 3, characterized in that the purification system comprises a plurality of wet curtain modules and spraying modules which are alternately distributed from bottom to top, a demister (1706) is arranged above the spraying module which is positioned at the uppermost end, an ozone generator (1707) is arranged above the demister (1706), the wet curtain modules and the spraying modules are configured to purify dust, ammonia gas and sulfide in the air in the pigsty and kill harmful bacteria, and the ozone generator (1707) is configured to ionize and oxidize odor.
5. The pigsty ventilation system according to claim 4, wherein the wet curtain module comprises a first layer of wet curtain (1702) and a second layer of wet curtain (1704), the spray module comprises a first layer of spray head (1703) and a second layer of spray head (1705), the first layer of wet curtain (1702) is mounted at the air outlet end of the draft tube (1701), the first layer of spray head (1703) is mounted above the first layer of wet curtain (1702), the second layer of wet curtain (1704) is mounted above the first layer of spray head (1703), and the second layer of spray head (1705) is mounted above the second layer of wet curtain (1704).
6. The pigsty ventilation system according to claim 4, characterized in that the water circulation system comprises a filter (1710), a water tank (1711), a water pump (1712) and an acid tank (1714), the input end of the filter (1710) is connected with the water outlet (1709), the output end of the filter (1710) is connected with the inlet of the water tank (1711), the outlet of the water tank (1711) is connected with the input end of the water pump (1712), the output end of the water pump (1712) is connected with the input end of the spray module, the outlet of the acid tank (1714) is connected with the inlet of the water tank (1711).
7. The ventilation system for the pigsty according to claim 1, characterized in that the pigsty is provided with a passageway along the length direction thereof, one side of the passageway is provided with one of the trenches (11), the other side of the passageway is connected with the inner side wall (1), or the pigsty is provided with a passageway along the length direction thereof, and two of the trenches (11) are symmetrically arranged on the two sides of the passageway;
interior side wall (1) outer side wall (2) with between wet curtain is injectd jointly to side wall air inlet window (6) (10), furred ceiling (3) roof (4) with between ceiling (9) is injectd jointly to side wall air inlet window (6), between wet curtain (10) with between ceiling (9) are provided with a plurality of baffles along pig house length direction interval, the baffle will between wet curtain (10) with between ceiling (9) cut apart into a plurality of pig house units, every evenly distributed has in the pig house unit wet curtain (5), side wall air inlet window (6) air intake (7) with trench fan (14).
8. The pigsty ventilation system of claim 7, wherein each pigsty unit is provided with an independent control system configured to regulate the air volume, humidity and temperature of each pigsty unit.
9. The ventilation system for the pigsty according to claim 8, characterized in that an axial flow fan (18) is arranged on one end gable of the pigsty, a differential pressure sensor is arranged on the axial flow fan (18), an air speed sensor is arranged at an air outlet of the trench fan (14), and the differential pressure sensor and the air speed sensor are both connected with the control system.
10. A ventilation method of a ventilation system of a pig house according to any one of claims 2-6, characterized in that it comprises the steps of:
air firstly enters a space between the inner side wall (1) and the outer side wall (2) through the wet curtain (5), then enters the ceiling room (9) through the side wall air inlet window (6), then enters the pigsty through the air inlet (7), due to negative pressure formed in the trench (11) by the trench fan (14), the air above the trench (11) enters the trench (11), then is discharged into the exhaust channel (15) together with the air in the trench (11), finally enters the air treatment device (17) through the exhaust channel (15), and the air treatment device (17) discharges the purified air into the external atmosphere.
CN202110465764.8A 2021-04-28 2021-04-28 Pigsty ventilation system with exhaust treatment function and ventilation method Pending CN113100077A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110465764.8A CN113100077A (en) 2021-04-28 2021-04-28 Pigsty ventilation system with exhaust treatment function and ventilation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110465764.8A CN113100077A (en) 2021-04-28 2021-04-28 Pigsty ventilation system with exhaust treatment function and ventilation method

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CN113100077A true CN113100077A (en) 2021-07-13

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Application Number Title Priority Date Filing Date
CN202110465764.8A Pending CN113100077A (en) 2021-04-28 2021-04-28 Pigsty ventilation system with exhaust treatment function and ventilation method

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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114097622A (en) * 2021-11-18 2022-03-01 西安建筑科技大学 Pigsty epidemic prevention combined air environment protection system and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114097622A (en) * 2021-11-18 2022-03-01 西安建筑科技大学 Pigsty epidemic prevention combined air environment protection system and method

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