Manufacturing method for glass fiber high-strength magnesia cement exhaust pipeline

Abstract

The invention discloses a manufacturing method for a glass fiber high-strength magnesia cement exhaust pipeline, and belongs to the technical field of manufacturing methods of exhaust pipelines used for lampblack, ventilation and exhaust of buildings. A product produced by using the manufacturing method is low in cost and convenient to mount and transport. According to the technical scheme adopted by the invention, the method comprises the following steps of: firstly fixing a mould on a horizontal rotating shaft of a machine, coating a layer of releasing agent on the surface of the mould, and then spraying a layer of magnesia cement slurry to the releasing agent; driving the mould to rotate by the rotating shaft; wrapping four planes of the mould with a layer of glass fiber cloth, spraying the magnesia cement slurry to the wrapped glass fiber cloth, performing such operations alternately until 3-4 layers of glass fiber cloth are wrapped, and spraying 4-5 layers of magnesia cement slurry; and finally, drying the manufactured glass fiber high-strength magnesia cement exhaust pipeline into a finished product. The method provided by the invention is mainly used for lampblack, ventilation and exhaust pipelines of buildings.

Description

technical field [0001] The invention belongs to the technical field of manufacturing methods of exhaust pipes used for oil fume, ventilation and exhaust in buildings. Background technique [0002] The oil fume, ventilation, and exhaust pipes of the central air-conditioning of existing buildings are mostly made of cement board, and the cross-section of the exhaust pipe is mostly rectangular or square. The production method of the wall is to first assemble the glass fiber mesh and stack it in the formwork, then pour the cement slurry into the formwork, and then dry and maintain it to form. The cement exhaust pipe made by the existing method is high in cost, heavy, difficult to install and move, weak in compression resistance, bending resistance and impact resistance, the glue net is easy to catch fire, serious waste and does not meet the national standard. Contents of the invention [0003] The invention provides a method for manufacturing a glass fiber high-strength magnes...

AI Technical Summary

Problems solved by technology

The cement exhaust pipe made by the existing method is high in cost, relatively heavy, difficult to install and move, not strong in compression, bending, and impact resistance, and the glue net is easy to catch fire. The waste is serious and does not meet the national standard.