The function and role of flexible waterproof casing
Flexible waterproof casing is usually used in buildings, fire-fighting pools, through the road and other places, the pipe through the wall can bring a better effect of bearing vibration, a reasonable solution to the problem of pipe expansion and deformation, can bring more perfect protection; rigid waterproof casing can be used to penetrate the basement wall under high pipe pressure. In other words, if you consider the waterproof performance of both sides of the wall, you need to choose flexible waterproof casing.
If only the penetration force of the pipe is considered, without considering the waterproof performance of both sides of the wall after penetration and the displacement and deformation of the pipe, then a rigid waterproof casing can be selected. First of all, the waterproof casing in construction needs to be made in accordance with the size of the atlas, followed by the design of the elevation coordinates and structural steel welding positioning is completed, it must be welded firmly, or displacement or skewed, there is no way to remedy the situation. When the civil construction is finished pouring concrete, the formwork is removed, and then the casing is cleaned up and painted with anti-rust paint.
Then is the choice of rubber seal, rubber seal selection is based on the inner diameter of the casing and the outer diameter of the pipe divided by two to determine the general diameter of the rubber seal will be larger than the casing gap of about 2mm, rubber seal length is set, the rubber seal pressed into the gap, so that the bolt above the flange rubber seal pressure on the line, the flange to the rubber seal pressure is generally not Leakage of water. The installation of flexible waterproof casing in accordance with the above method is generally not leaky. Including the pipeline through the waterproof requirements of the external wall, roof, deformation joints are equipped with rigid waterproof casing; fire pools choose flexible waterproof casing.
Different areas choose different types and sizes of casing, construction strictly implement the construction location design instructions In addition to including the cooperation and coordination of professional and civil construction teams, before the construction period to do a good job of technical delivery of workers, the placement process includes a variety of issues, such as quality acceptance and finished product protection, how the personnel work in an orderly manner. In other types of work, it also becomes an important factor in order not to influence each other.
