Ventilation system for livestock and poultry breeding

Abstract

The invention discloses a ventilation system for livestock and poultry breeding, which comprises an aisle, a row of pens are arranged on both sides of the aisle along the aisle, and manure ponds are respectively arranged under each sty; Separated by the manure leakage board, there are two passages below the aisle that are isolated from each other along the aisle. The upper passage is the air supply passage, and the lower passage is the exhaust passage; The air component is connected with the air supply duct; one end of the air exhaust duct is closed, and the other end is the outlet of the air exhaust duct. An air exhaust branch is provided between each septic tank and the air exhaust duct, and the air exhaust branch is inclined. There is an exhaust fan at the outlet end of the exhaust duct, so that the air in the housing can be discharged through the dung leakage board, the septic tank, the exhaust branch channel and the exhaust channel in sequence, so that the air in each pen is independent of each other. unidirectional flow. The system can provide suitable temperature and humidity for the growth of livestock and poultry, and can prevent the cross-spreading of diseases in the shed.

Description

technical field [0001] The invention belongs to the technical field of ventilation, and particularly relates to a ventilation system for livestock and poultry breeding. Background technique [0002] With the massive transfer of productive forces, there has been a trend of intensive production and management in agriculture, and livestock and poultry farming is also forming a scale and developing rapidly. Large-scale livestock and poultry farms need to adjust temperature and humidity to provide a comfortable temperature and humidity environment. For example, pigs are warm-blooded animals, and suitable temperature and humidity are important factors in the growth process of pigs. The suitable ambient temperature for pig growth is 16~23°C, 20~23°C in the early stage, and 16~20°C in the later stage; when the temperature is suitable, the suitable relative humidity of the environment is 50%~70%. The temperature and humidity of the pig house are usually regulated by ventilation. ...

AI Technical Summary

Problems solved by technology

Different ventilation methods and air flow directions bring different ventilation effects, but there are generally uneven air flow rates and large differences in air freshness in farms. The room temperature near the air inlet is low and the air is fresh, and the closer to the air outlet, the worse the air quality At the same time, the above ventilation methods can easily cause the harmful viruses and gases in the farm to cross-spread in the whole farm. When the livestock and poultry in one of the pens get sick, the livestock and poultry in the whole farm are easily infected and sick, which improves the risk of disease in livestock

It is embodied in the following three aspects: 1. The airflow entering the breeding area flows from one direction to another as a whole, and the pens in the downwind direction will be affected by the upwind passing through the pens, that is, if the livestock and poultry in the upwind pens If there is a virus infection, it may spread with the airflow and affect all the livestock and poultry in the downwind direction; 2. The airflow often passes horizontally from a certain height above the pen, and the effective airflow that actually reaches the breathing zone of the livestock and poultry is very little, that is, the fresh air The utilization rate is low, which virtually increases energy consumption; 3. The odor of livestock and poultry excrement in the septic tank spreads upwards, directly affecting the growth environment and comfort of livestock and poultry

Moreover, large-scale livestock and poultry farms currently only rely on wet curtains to reduce the temperature of the farms. However, some (high temperature and high humidity) climate zones have high outdoor temperature and humidity, and the cooling method of wet curtains can no longer meet the temperature and humidity control requirements of large-scale farming.

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