Winter pig house ventilation system for large-scale pig farm

Abstract

The invention discloses a winter pig house ventilation system for a large-scale pig farm, and solves problems that in the prior art, ventilation airflow is uneven, air freshness degrees of various regions have greatly differences to easily form a ventilation dead corner or harmful wind, and high ammonia concentration and high humidity in a pig house go against healthy growth of pigs. The winter pig house ventilation system provided by the invention comprises a herringbone pig house roof, a wet curtain, a central walkway, air inlets, air deflectors, pig sties, dung drainage ditches, exhaust passages and variable speed fans, wherein the wet curtain is arranged on a side wall of the pig house; the air inlets are arranged directly below the herringbone pig house roof; the air deflectors are arranged at an upper part of the pig house; the pig sties are arranged side by side on the ground of the pig house; slatted floors are placed at a rear part of the ground of the pig sties; the dung drainage ditches and the exhaust passages are alternately arranged under the pig sties. The winter pig house ventilation system provided by the invention is suitable for large-scale pig farms in winter, late autumn, early spring and other seasons in which the temperature is relatively low and changes rapidly; ventilation management of the pig house can reduce the concentrations of ammonia, hydrogen sulfide and other harmful gases in the pig house, improve health and feed conversion ratio of the pigs, improve working efficiency and reduce farming costs.

Description

technical field [0001] The invention relates to a winter pig house ventilation system for large-scale pig farms. Background technique [0002] Common ventilation methods in large-scale pig farms include: natural ventilation mode and wet curtain-fan system; according to the air flow direction, it can be divided into horizontal ventilation, longitudinal ventilation and vertical ventilation. Different ventilation methods and air flow directions bring different ventilation effects, but there are generally uneven airflow rates and large differences in air freshness in the house. 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, due to the obstruction of other facilities and equipment such as pig pens and feed troughs, these ventilation methods are likely to form dead corners or windy winds and dirty air in winter gather at the fans. Keeping pig houses warm in winter is the top prior...

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 the house. The room temperature near the air inlet is low and the air is fresh. The closer to the air outlet, the worse the air quality

At the same time, due to the obstruction of other facilities and equipment such as pig pens and troughs, these ventilation methods are likely to form dead corners or drafts, and dirty air in winter gathers at the fans.

Keeping pig houses warm in winter is the top priority of feeding and management. Especially in my country, the outdoor temperature of pig houses is low in winter. In order to maintain a suitable temperature, ventilation time and frequency are often reduced, resulting in high ammonia concentration and high humidity in pig houses, which is not conducive to pigs. group healthy growth

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