A prefabricated building external wall panel drainage structure

Abstract

The invention belongs to the technical field of building construction technology, and relates to a drainage structure for prefabricated building external wall panels, which comprises a drainage pipe communicated with the inner cavity of the wall panel, the drainage pipe is provided with a one-way valve, and further includes The transpiration chamber in the plate, the height of the bottom of the transpiration chamber is lower than the height of the cavity, a drainage pipe is arranged between the bottom of the transpiration chamber and the cavity, the top of the transpiration chamber is provided with a porous evaporation plate, and the side wall of the top of the transpiration chamber is provided with There is a transpiration window, the transpiration window is communicated with the outer surface of the wall panel, and a sealing plate is arranged in the transpiration window; the invention can still discharge the accumulated water in the inner cavity of the wall panel during the long-term rainfall process, so as to make it as possible as possible. The interior of the wall panel remains dry.

Description

technical field [0001] The invention relates to the technical field of building construction technology, in particular to a drainage structure for an assembled building external wall panel. Background technique [0002] Prefabricated buildings refer to the structural bodies of buildings (such as wall panels, columns, beams, floors, stairs, etc.) that are disassembled according to certain specifications and then prefabricated in the factory, and then transported to the site for assembly. Because it is assembled on site, there will be a large number of assembly seams, which can easily become channels for water penetration. Therefore, prefabricated buildings actually have certain inherent weaknesses in waterproofing. [0003] The external wall panel of the prefabricated building is used as the outer protective structure part, and the horizontal and vertical connections of the splicing joints are generally processed by gluing. For the sake of material saving, sound insulation a...

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Problems solved by technology

[0005] The above-mentioned existing technical solutions have the following defects: the design purpose of the one-way valve is to prevent the external surface runoff from flowing reversely along the pipe column into the inner cavity of the wall panel, which also means that the drainage structure can only be maintained in the case of short-term rainfall. normal operation, but for areas with long rainfall and large surface runoff, the drainage structure has been closed for a long time, which cannot quickly and effectively solve the problem of water accumulation in the cavity inside the wall panel, and the wall panel will still be damaged under long-term rainwater immersion. moldy, cracked

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