Ventilation system for livestock and poultry breeding

Abstract

The invention discloses a ventilation system for livestock and poultry breeding. The ventilation system comprises aisles, wherein one row of housings are arranged at each of two sides of each aisle along the direction of the aisle; a manure pit is arranged below each housing separately; each housing is separated from the corresponding manure pit through a manure leakage plate; two passages which are isolated from top to bottom along the direction of each aisle are arranged below the aisle; each upper passage is an air supply passage and each lower passage is an exhaust passage; an air supply assembly is arranged at the side, close to one corresponding aisle, of each housing and communicates with one corresponding air supply passage; one end of each exhaust passage is closed and an exhaustpassage outlet is arranged at the other end; an exhaust branch passage is arranged between each manure pit and the corresponding exhaust passage and is obliquely arranged; and an exhaust blower is arranged at the outlet end of each exhaust passage to exhaust air in the corresponding housing through the corresponding manure leakage plate, manure pit, exhaust branch passage and exhaust passage in sequence, so that the air in each housing unidirectionally flows independently. The system can provide appropriate temperature and humidity for livestock and poultry growth and can prevent cross transmission of diseases in the housings.

Description

technical field [0001] The invention belongs to the technical field of ventilation, in particular to a ventilation system for livestock and poultry breeding. Background technique [0002] With the mass transfer of productivity, there has been a trend of intensive production and management in agriculture, and livestock and poultry breeding has also formed a scale and developed rapidly. Large-scale livestock and poultry farms need to adjust the 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 ambient relative humidity is 50%~70%. Ventilation is usually used to regulate the temperature and humidity of pig houses. [0003] Common 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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