Outer wall of building and method for preventing PM2.5 through outer wall

Abstract

The invention discloses an outer wall of a building and a method for preventing PM2.5 through the outer wall. The outer wall comprises a plurality of wall units. Each wall unit comprises two shape steel columns on the two sides, a shape steel column in the middle and a concrete wall body (1) connecting the three shape steel columns, wherein a main ventilation hole (2) is formed in the concrete wall (1) in a penetrating mode, filtering holes (3) communicated with the main ventilation hole (2) are formed in webs of the three shape steel columns, the concrete wall body (1) is provided with secondary ventilation holes (5) in a penetrating mode in the thickness direction, and the secondary ventilation holes (5) are communicated with the main ventilation hole (2). An outer door (6) is arranged on the outer sides of every two adjacent shape steel columns, every two adjacent shape steel columns, one outer door (6) and one concrete wall body (1) define an outer cavity (8), and a filtering screen (9) is arranged in each outer cavity (8). The method is characterized in that inner doors (7) are closed, the outer doors (6) are opened, an air pump is arranged at the end of a main air flue (4), and the air pump is driven to suck air. By means of the outer wall and the method, the PM2.5 index can be effectively reduced.

Description

technical field [0001] The invention relates to the fields of civil engineering and environmental protection, in particular to an exterior wall of a building and a method for preventing and controlling PM2.5 by using the exterior wall. Background technique [0002] In recent years, the development of the economy has been accompanied by the deterioration of the environment. The PM2.5 index in cities, especially densely populated large cities, remains high, which reduces the quality of the atmospheric environment and is not conducive to people's health. All countries have introduced a series of measures to prevent and control PM2.5, such as minimizing vehicle exhaust emissions and shutting down industrial equipment such as boilers with heavy pollution. But above-mentioned measure takes effect slowly, and more or less causes adverse effect to people's normal life. At present, there is indeed no effective means to solve the excessively high PM2.5 concentration in cities in the ...

AI Technical Summary

Problems solved by technology

However, the above-mentioned measures are slow to take effect, and more or less have adverse effects on people's normal life

At present, there is indeed no effective means to solve the excessively high concentration of PM2.5 in the city in the existing technology. Excessively high PM2.5 index has increasingly become a social problem that is harmful to people's life but difficult to effectively solve.

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