Winter fresh air system for large-scale pig houses in severe cold and cold regions

Abstract

The invention relates to a winter fresh air system applicable to a large-scale hog house in severe cold and cold regions; the system is capable of effectively solving the problems of air ventilation of the hog house and heat preservation in winter; the technical scheme is as follows: the system comprises the hog house; the hog house is of a hollow structure which is composed of two longitudinal walls which are arranged at an interval along the long-axis direction of the hog house, transverse walls which are symmetrically arranged at two ends of the longitudinal walls along the short-axis direction of the hog house, and a roof at the top of the horizontal walls and the transverse walls; fresh air pipelines are arranged at the upper part of the inside of the hog house along the long-axis direction of the hog house and is of a rectangular hollow structure with openings at two ends; the openings at two ends serve as air inlets; two air inlet ends are mounted at the upper parts of the transverse walls at the corresponding sides and communicated with the outside of the hog house via penetrating holes in the transverse walls; a plurality of air delivery holes are formed on the front and rear sides of the fresh air pipeline; and blowers are respectively arranged on two longitudinal walls. The winter fresh air system is capable of reducing heating consumption of northern hog houses in winter; stable and uniform speed field and temperature field are formed in the hog house; the cost is reduced, and better heating and heat insulating effects can be obtained by using less energy consumption and material consumption.

Description

technical field [0001] The invention relates to a fresh air system, in particular to a winter fresh air system for large-scale pig houses in severe cold and cold regions. Background technique [0002] With the continuous improvement of the intensification and scale of the pig farming industry, the requirements for hygiene and air comfort in the pig house are also increasing. Especially for large-scale pig houses in severe cold and cold areas, the drop in winter temperature will reduce the growth performance of pigs and affect economic benefits, so it is necessary to heat and insulate the pig houses. At the same time, in order to reduce heating energy consumption in winter, the practice of closing doors and windows is usually adopted. Due to the accumulation of feces and urine, the fermentation of feed bedding, decay and decomposition, etc., a large amount of toxic and harmful gases such as ammonia and hydrogen sulfide will be mixed in the closed pig house. When the concent...

AI Technical Summary

Problems solved by technology

The problems brought about by this winter ventilation method are: (1) A large building floor height is required to install the suspended ceiling, and the space above the cornice and the suspended ceiling is used to form the air intake channel for winter fresh air

This fresh air distribution is not conducive to the formation of a stable and uniform temperature field in the house, thus affecting the growth performance of pigs

[0004] The existing winter fresh air mode of ceiling + cornice air supply reduces the airtightness of the pig house, resulting in increased heating energy consumption and increased operating costs; the fresh air in the house is unevenly distributed, resulting in an uneven temperature field, and local temperatures are too high. Low; setting a suspended ceiling with an open cornice is suitable for heat insulation in summer in areas with high temperatures in the south, which is not conducive to heat preservation in winter, and at the same time increases construction investment

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