How about a spiral air duct? Nowadays, many customers in the market are highly concerned about the usage time, price, and cost of spiral ducts when placing orders. When choosing, they need to find a qualified manufacturer of spiral duct equipment. And now there are also so many manufacturers, and for manufacturers with different production scales, it is necessary to compare the equipment selected from multiple aspects to find a strong manufacturer. Choosing a good manufacturer with reasonable prices is also important. And when searching, it is also necessary to understand the different project applications of this spiral duct.

Spiral air ducts have a wide range of applications, with high usage rates in projects such as purification system return air ducts, air conditioning ventilation ducts, industrial supply and exhaust ventilation ducts, environmental protection system suction and exhaust ducts, mining extraction ducts, and mining coated cloth air ducts. They also demonstrate unique advantages in some special project applications. To ensure the good application effect of spiral ducts in different projects, in addition to ensuring product material quality, it is also necessary to combine reasonable design and installation methods.

When connecting the air duct to the fan, a flexible joint should be added at the inlet and outlet, and the cross-sectional size of the flexible joint should be consistent with the inlet and outlet of the fan. Hose joints can generally be made of materials such as canvas and synthetic leather. The length of the hose should not be less than 200, and the tightness should be appropriate. Flexible hoses can buffer the vibration of the fan. Before connecting the air duct with dust removal equipment, heating equipment, etc., prefabrication and installation should be carried out according to the actual surveyed drawings after the equipment installation is completed.

When installing the air duct, it is advisable to open openings for the inlet and outlet during the prefabrication of the air duct. If an air outlet needs to be opened on the installed air duct, the interface should be tight. When transporting gases containing condensed water or high moisture content, the horizontal pipeline should have a slope and be connected to a drainage pipe at the low point. During installation, longitudinal joints should not appear at the bottom of the air duct, and sealing treatment should be carried out at the joints at the bottom. For steel plate air ducts that transport flammable and explosive gases, jumper wires should be installed at the connection flanges of the ducts and connected to the electrostatic grounding grid. We can design and customize various specifications of air ducts according to customer requirements, providing stronger support for customers' project use from multiple aspects.

The anti vibration and noise reduction of spiral ducts are mainly due to improper installation and ventilation control. Therefore, measures need to be taken from the aspects of installation and ventilation system control to solve the above two problems.

The connection between the fan and the spiral air duct adopts a flexible hose connection. The installation of the flexible hose at the suction port of the fan should be moderately tight to avoid reducing the area of the inlet and outlet due to loose connections, which may cause noise and vibration. The production, installation, and connection of spiral air ducts with components should be tight and free of air leakage to avoid air leakage noise. To prevent vibration of the spiral air duct, fixed brackets are installed at the turning points of each system's spiral air duct, as well as at the connections with the ventilation fan and air outlet.

Install the static pressure box. A static pressure box is a necessary accessory for air supply systems to reduce dynamic pressure, increase static pressure, stabilize airflow, and reduce airflow vibration. It can make the air supply effect more ideal. It can be divided into supply air end static pressure box and cabinet machine supply/return air static pressure box. The working point of ventilation equipment should be close. The higher the efficiency of ventilation equipment of the same model, the lower the noise. The intake and exhaust channels of the ventilation equipment room are equipped with noise reduction measures. The noise level at the inlet and outlet of ventilation equipment is due to the increase in ventilation and air pressure. Therefore, when designing a ventilation system, efforts should be made to minimize the pressure loss of the system. When the total air volume and pressure loss of the ventilation system are large, it can be divided into small systems. The airflow velocity inside the spiral duct should not be too high to avoid causing noise. The airflow velocity inside the pipeline should be selected according to different requirements and relevant regulations.

The manufacturing process of spiral ducts and the diameter control of various metal thin-walled circular pipes produced by the spiral duct machine are determined by the diameter of the spiral belt mold installed on the duct making machine. Therefore, the production of a certain pipe diameter requires a matching mold. Frequent replacement of the mold is an essential operational process in the production of spiral air ducts.

The working principle of the interlocking between adjacent spiral strip metal sheets (both sides have been folded according to the setting, hereinafter referred to as metal sheets) determines that the two sides of the metal sheet, after being rolled into a bottom biting edge, must be curled along the inner wall of the spiral line of the strip mold when entering the strip mold. This determines that the strip mold is tightly attached to the metal sheet and is set on the outside of the metal sheet (the starting fixed end of the strip mold is set at the lower part of the strip metal sheet). To control the working position of the strip metal sheet at the starting end of the strip mold, a pressure plate is also provided on the thin plate material. This has led to the traditional method of replacing the strip mold: remove the pressure plate and the thin sheet that has been rolled into a bottom biting edge, and then tighten the strip mold fastening screws that are screwed onto the lower bottom plate before replacing the strip mold.

Spiral air ducts are suitable for large-sized processing and are easy to machine. However, for small-sized ones, it is inconvenient to use mechanical equipment, so the processing cycle is long and the speed is slow. The exposed power cord must be threaded through a conduit, which is generally made of metal hose or Kapley tube. The connection with the equipment should be made into a duck neck shaped water droplet bend, and the fire line connected to the fire protection system on the equipment should be fixed with special fixtures to prevent it from falling. Expand reading on "How to choose Panjin meltblown fabric fan"

How about a spiral air duct? When the ventilation duct needs to change direction, diameter, or branch, it is not suitable to use box type fittings. However, when it is necessary to use a static pressure box for distributing airflow, the cross-sectional wind speed inside the box should not exceed 1.5m/s. Its characteristics are that the air volume is relatively large, the product is relatively light, and basically does not consider the problem of roof load. The system will not have a lot of noise during operation, which is very helpful for the environment. In addition, this type of duct is also very convenient and flexible to install, making it a cost-effective composite duct. For information on spiral ducts and any further inquiries, please contact the customer service of the general equipment manufacturer directly.