Ventilation duct It must not be new to everyone. Ventilation ducts are our large indoor ventilation equipment. We can see them in some large public places, such as office buildings and shopping malls. Ventilation duct is a kind of hollow duct, mostly circular or square. The production and construction of ventilation ducts have a great impact on the later operation and the safety factor of operators, so it is necessary for operators to understand Ventilation pipe construction Precautions for.
1. During the construction of ventilation ducts, longitudinal joints should be avoided as far as possible, but transverse joints should not be presented. In addition, according to the design cleanliness requirements, the undercut and four corners of the vent pipe need to be sealed with sealant. In addition, the sealing surface of the vent pipe joint shall be set at the positive pressure side of the vent pipe wall.
2. During the construction of air duct, the air duct shall not be provided with stiffening structure or stiffener, because this will have a certain impact on the quality of the air duct.
3. The connection mode of "S" shaped cut and "C" shaped right angle cut cannot be used for air duct construction. In addition, some special ventilation ducts shall not be blocked.
4. Clean the vent pipe with cleaning solution after completion. Only after reaching the cleaning specification can the seal be timely sealed.
5. When the air nozzle of the glass fiber composite board is a section, this section of the pipe end shall be sealed with adhesive tape or glue before assembling the flange joint to avoid exposure and scattering of glass fiber.
6. If it is a colorful coated steel plate ventilation duct, the inner wall should be kept smooth, and the coating should not be damaged during the construction of the ventilation duct. If the parts are damaged, the surface shall be coated with epoxy resin. In addition, anti-corrosion measures shall be adopted during the construction of air ducts. Blind rivets should not be used. When assembling ventilation duct parts, these parts shall be galvanized.
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