Waterproof casing installation precautions

The four keys to the correct use of rigid waterproof casing introduction: when the waterfront for corrosive media, can use blocking materials to seal the gap casing through the wall if the non-concrete wall, should be partially replaced with concrete walls, the pouring scale should be larger than the diameter of the wing ring (D5) 200, and it is necessary to pour the casing once solid in the wall. The concrete wall thickness at the pipe penetration should be not less than 300, otherwise the wall should be thickened on one side or thickened on both ends. The diameter of the thickened part is at least D5 + 200. casing component to L = 300 accounting, such as wall thickness greater than 300, should be accounted for separately.
 
Rigid waterproof casing sealing ring for O-ring, for general sealing the actual effect of the project. type A rigid waterproof casing is suitable for seamless steel pipe through, type B rigid waterproof casing for cast iron drainage pipe and ductile iron pipe through. The axis of the waterproof casing can be positioned to ensure the installation site and positioning of the rigid waterproof casing.
 
The axial section of rigid waterproof casing is equivalent to the basic rack, and the water stop wing ring is equivalent to the sealing surface with which it is sealed. Although the left and right sides of the rigid waterproof casing teeth, with different spacing, but because the same side of the same spacing, so there is no damage to the sealing conditions, when the axial movement of the rigid waterproof casing, but also to ensure a good seal.
 
 
Double guide worm gear vice in the rotary feed motion or indexing movement of CNC machine tools are widely used, the main advantages are: sealing gap can be adjusted very small, according to experience, the side gap can be adjusted to 0.01 ~ 0.015mm, while the rigid waterproof casing can generally only reach 0.03-0.08mm, and then small, it is easy to jam. Therefore, rigid waterproof casing can work under a smaller side gap, which is very beneficial to improve the indexing accuracy of the pipe.