Hydrodynamic anti-backflow air shaft

Abstract

The invention provides a hydrodynamic anti-backflow air shaft, and relates to the technical field of underground buildings. The hydrodynamic anti-backflow air shaft comprises a shaft enclosure wall, an outer wall and an enclosure, wherein the shaft enclosure wall is arranged around a shaft mouth of a shaft, the upper end of the shaft enclosure wall is encircled to form a ventilation opening, and the shaft mouth of the shaft is in communication with the outside only through the ventilation opening; the outer wall is arranged around the shaft enclosure wall, and a mounting space is reserved between the outer wall and the shaft enclosure wall; and the enclosure is located between the shaft enclosure wall and the outer wall, the enclosure is arranged around the shaft enclosure wall, and the enclosure can vertically move along with the change of the height of the water level in the mounting space. According to the hydrodynamic anti-backflow air shaft, the water retaining height is increased, and accumulated water is prevented from flowing backwards into a ventilation shaft; the structure is reliable, external force driving is not needed, and maintenance cost is low.

Description

technical field [0001] The invention relates to the technical field of underground construction, in particular to a hydrodynamic anti-backflow air well. Background technique [0002] The air shaft is a device used for ventilation of underground buildings and the ground. The wall part of the well that protrudes from the ground can prevent ground water (lower than the height of the wall) from entering the ventilation shaft. However, in recent years, due to short-term torrential rains, incidents of stagnant water pouring into wind shafts have frequently been reported. [0003] In the prior art, most of the air shaft designs for preventing backflow need to provide additional power to drive the air shaft up and down, and the anti-backflow air shafts that do not require additional power are difficult to clean. [0004] Although the anti-inverting ventilation shaft structure in the prior art solves the problem of rainwater entering the ventilation shaft to a certain extent, when t...

AI Technical Summary

Problems solved by technology

However, in recent years, due to short-term torrential rains, incidents of stagnant water being poured into wind shafts have been reported frequently.

[0003]In the prior art, most of the air shaft designs for preventing backflow need to provide additional power to drive the air shaft up and down, and it is difficult for the anti-backflow air shaft without additional power to to clean up

[0004] Although the anti-backflow ventilation shaft structure in the prior art solves the problem of rainwater entering the ventilation shaft to a certain extent, when there is too much water outside, the external The stagnant water is still easy to flow into the underground building through the wind shaft, which has certain safety hazards, so there is still room for improvement

Images