Pig house environment control system

Abstract

The invention discloses a pig house environment control system. The system comprises a house body, a heat pump heat recovery fresh air unit, an air treatment unit, a flexible accurate air supply system, a trench exhaust pipe, a trench fan, a waste gas purifying tower and a cold hot water pipe; an excrement leakage floor is arranged in the inner part of the house body; a house ceiling is arranged on the upper end of the house body; a suspended ceiling is arranged below the house ceiling; the heat pump heat recovery fresh air unit is arranged outside the house body; the air treatment unit is arranged inside the ceiling body; the cold hot water pipe is connected between the heat pump heat recovery fresh air unit and the air treatment unit; the flexible accurate air supply system is connectedto the air treatment unit; and the trench exhaust pipe is arranged under the excrement leakage floor and between the excrement leakage floor and the house body. The arranged system has the advantages of high temperature difference, low wind speed and small air volume, the waste gas quantity is reduced, the centralized recycle treatment of waste gas is easy, the temperature and humidity can be controlled accurately, the cold and heat stress is reduced, the ratio of materials to meat is reduce, the pregnancy rate is improved, the birth quantity is improved, the prevalence rate is reduced, thesurvival rate is improved, and the pigs per sow per year (PSY) are improved.

Description

technical field [0001] The invention relates to the technical field of pig houses, in particular to a pig house environmental control system. Background technique [0002] The purpose of environmental control in pig houses: the accumulation of toxic and harmful gases (mainly ammonia, hydrogen sulfide, etc.) Gas is fatal to pigs. Different temperature and humidity in the environment have a great impact on the production of pigs. Humidity will affect the metabolism of pigs and cause various diseases; if the temperature cannot be accurately controlled, it will cause heat stress and cold stress in pigs, and increase the feed-to-meat ratio. Increase sickness rate and dead pig rate, reduce PSY. Therefore, the temperature and humidity in the pig house must be accurately controlled within an optimal range suitable for pig growth. [0003] Existing technology: The pig house currently adopts a wet curtain + negative pressure fan tunnel type environmental control system. [0004] T...

AI Technical Summary

Problems solved by technology

[0004] The main disadvantages of the system are: low temperature difference, large air volume, high wind speed

[0005] 1. Extreme weather in summer, high temperature and high humidity, the pig house can still reach 35-39 ℃, the cooling effect cannot be guaranteed, and the temperature is uncontrollable;

[0006] 2. Humidification is carried out while the wet curtain cools down, resulting in high humidity in the pig house, which can easily cause diarrhea, breed bacteria, and pigs are prone to rheumatic diseases;

[0007] 3. The wet curtain is not well sealed and the insulation is poor, resulting in a large heating load in winter and high operating costs;

[0008] 4. Under negative pressure conditions, it is easy to induce the wind phenomenon, causing cold stress in winter;

[0009] 5. There are dead corners due to uneven ventilation, and pigs in some areas breathe less fresh air and grow unevenly;

[0010] 6. Negative pressure ventilation causes ammonia hydrogen sulfide to rise into the house, posing a threat to the health of pigs;

[0011] 7. The low temperature difference of the wet curtain cooling leads to a large air volume, which makes it difficult to concentrate the exhaust gas

Images