The application of spiral air ducts is more and more common in our lives. If you want the service life of spiral air ducts to become longer, the usual cleaning and maintenance must be indispensable. The spiral duct is mainly coated with a layer of zinc on the duct iron sheet to protect the iron sheet. After passivation treatment, dyeing or coating of light protection agent, the zinc coating can significantly improve its protection and decoration. Spiral ducts are generally divided into three categories according to materials: galvanized spiral ducts, stainless steel spiral ducts and composite spiral ducts. Among them, the stainless steel duct is of high quality and strong applicability, but the price is high. At present, the most widely circulated spiral duct on the market is galvanized sheet. Galvanized sheet spiral ducts are basically the characteristics of stainless steel spiral ducts, but the price is only two-thirds of stainless steel ducts or even lower. The composite spiral air duct is generally used in places where the external environment is relatively common and the air duct requirements are not too high. The application scope of spiral duct is very wide. Purification system return air duct, central air conditioning vent pipe, industrial air supply and exhaust vent pipe, environmental protection system suction and exhaust duct, mine exhaust gas pipe, mine coated rubber duct, etc.
There are three ways to clean the most effective air duct:
1. Vacuum suction: suck the dirt with a vacuum suction tube of the hand-held type. Start to directly touch the inner wall of the pipe with a brush to remove dirt. However, the galvanized spiral air duct needs to have a relatively large manhole to enable the operator to carry out. This method may leak some local dust and dirt, because the galvanized spiral air duct cannot form a complete negative pressure condition at this time.
2. The air pipe can form a negative pressure to wash with power: use a pneumatic or electric brush to brush the dirt, and then the dirt is sucked into the vacuum collector in the same way and direction as the gas flush. This method requires as much care as possible not to damage the appearance of the insulation material.
3. The air pipe can form a negative pressure or can be flushed with gas: so that the compressed air can be delivered by means of a hose with a nozzle connected to the galvanized spiral air pipe. The nozzle enables compressed air to drive dust and dirt in. The dirt and dust dried by compressed air are transported along the air duct to the vacuum collection container.
