Since we know that the primary task of enterprises in the economic crisis is to survive, it is necessary for enterprises to adjust their business structure, compress or cut off businesses with low profitability, so as to concentrate resources on businesses that can be cashed immediately. For the same pressure characteristics, the installation space of several circular pipes is often the same as or smaller than that of a rectangular pipe. This method requires the air duct to have a large manhole for the operator to access, but this method is the easiest to miss some dust and dirt, because the air duct can not form a complete negative pressure state. Transportation of bulk materials: in the production process of some factories, it is necessary to transport loose particles, especially particles with small specific gravity, such as foam plastic particles. Spiral catheter has low cost and good effect. In spiral duct, a layer of zinc is mainly plated on the iron sheet of the air duct to protect the iron sheet. After passivation treatment, dyeing or coating with photo-protective agent, the protective and decorative properties of zinc coating can be significantly improved. Excellent moisture-proof and waterproof performance, light weight, low cost, convenient installation, beautiful and applicable. It is a full-mechanism air duct, and the straight pipe does not need manual knocking.
Under the same cross-sectional area, the circumference of rectangular air duct with the length-width ratio of 1: 3 is 40% longer than that of spiral duct, saving materials; Similarly, due to the length of spiral duct Week, thermal insulation materials can be reduced accordingly. Generally speaking, the flow of ventilation system is relatively large. Therefore, it is required to use air conveying pipeline with low resistance to save construction cost and operation cost, so spiral duct is the best choice. In bulk material transportation: pneumatic transportation system, some fine bulk material particles can be transported through spiral pipes, with low cost and good effect. Gas flushing: this method uses a hose with a nozzle to connect to the air duct to transport compressed air. The nozzle is designed so that compressed air can drive dust and dirt in. Only by maintaining the air duct can the "life" be extended. Of course, the best maintenance method is to do a good job of cleaning regularly, and there are three most effective ways to clean the air duct: vacuum suction: operating with a vacuum straw similar to a hand. Direct contact with the inner wall of the pipeline with a brush to remove dirt. Composite spiral duct is generally used in places where the external environment is relatively common and the requirements for air ducts are not too high. The most widely circulated spiral pipe in the market is galvanized. Galvanized spiral duct is basically the characteristic of stainless steel spiral duct, but its price is only two-thirds or even lower than that of stainless steel duct.
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