Underground ventilation structure with temperature compensation and pig house NH3 emission functions and variable air rate and method

Abstract

The invention discloses an underground ventilation structure with temperature compensation and pig house NH3 emission functions and a variable air rate and a method. The underground ventilation structure comprises a ventilation structure and an outdoor air heating system. The ventilation structure comprises a concentrated gas inlet and concentrated gas outlets, the concentrated gas inlet comprisesa positive-pressure fan, an underground ventilation duct, a transmission device and ventilation columns, the concentrated gas outlets are formed in a position below a leak bottom plate and the outerside of a wall of a manure pit and comprise negative-pressure fans and purification device, and waste gas can be exhausted from the lower portion of the leak bottom plate by the concentrated gas outlets via the negative-pressure fans, so that the NH3 concentration and the humidity can be lowered; the outdoor heating system is positioned in a fan wall at the concentrated gas inlet, and fresh air can be delivered into the house after being heated. The underground ventilation structure and the method have the advantages that the underground ventilation structure is provided with the outdoor positive-pressure fan, accordingly, ventilation modes can be changed, ventilation locations can be adjusted, the truly airtight pig house can be formed, and harmful wind can be prevented; the supply air rates are uniform and controllable in winters, the quality of air in the house can be improved under the condition that the internal temperature balance of the house is guaranteed, accordingly, the comfort of live pigs can be guaranteed, and the economic benefit can be increased.

Description

Technical field: [0001] The invention relates to the field of animal husbandry, especially to reduce NH under the condition of keeping warm in winter pig houses 3 Concentration of underground ventilation structures and methods. Background technique: [0002] my country is a big country in animal husbandry, and the amount of livestock and poultry breeding in my country currently ranks first in the world. With the rapid development of my country's economy and the continuous improvement of people's living standards, the consumption of meat has increased sharply. In order to meet the demand, the number of livestock and poultry breeding has increased sharply, and the degree of intensification is getting higher and higher. However, the poor housing environment is an important reason for a series of problems such as the low health level of livestock and poultry, frequent occurrence of animal diseases, and damage to animal welfare. According to data, there are 168 kinds of stench ...

AI Technical Summary

Problems solved by technology

Too much ammonia in the house will cause anemia and tissue hypoxia, which will reduce the body's resistance to diseases, resulting in poor growth of the young and reduced reproductive capacity of breeding pigs

[0003] At this stage, the ventilation equipment is not perfect, the degree of automation in the pig house is low, there are many problems such as inability to ventilate in time and excessive power consumption, so that the temperature in the house and the corresponding environmental parameters are kept within an appropriate range

Images