SDS series jet fans are widely used in the operational ventilation system of road and railway tunnels. Generally, several fans are suspended on the top or both sides at intervals in the tunnel. When the fan is working, part of the total air flow flowing through the tunnel is sucked by the fan, and after the impeller works to generate a high thrust, it is ejected at a high speed from the outlet of the fan, so that the high-speed airflow will transfer energy to the air in the tunnel and push the When the wind speed drops to a certain value after a certain distance, the next group of fans will continue to work, thus realizing the ventilation purpose of inhaling fresh air from the entrance of the tunnel and discharging polluted air from the exit. Features of the fan: The SDS series jet fans produced by our company can adopt high-efficiency blades developed by our company or directly install fan blades imported from abroad according to user needs. They all have the characteristics of low noise, corrosion resistance, high temperature resistance, no breakage, etc., and can be equipped with two-speed motors according to user needs, respectively for forced exhaust (smoke) or low-speed ventilation to maintain energy-saving operation. In addition, SDS series jet fans run smoothly, are easy to maintain, beautiful in appearance and easy to use.

SDS series jet fans generally consist of the following parts: 1. Nozzle: streamlined technology is adopted, the fan has high working efficiency, and the energy-saving effect is obvious;
2. Muffler: Both ends of the fan are equipped with mufflers, which are filled with special waterproof and sound-absorbing materials, which greatly reduces the noise of the fan during operation, and is more in line with environmental protection requirements.
3. Fan body: the fan impeller and motor are built in it, and the motor junction box is led out of the casing, which is convenient for on-site installation: the motor adopts a specially designed motor with insulation class F and protection class IP54; the motor has increased moisture resistance and is suitable for tunnel environments.
4. Front and rear rectifiers: The streamlined front and rear rectifiers are designed to improve the flow field and greatly improve the operating efficiency of the fan.
5. The motor is equipped with an oil injection pipe: after running for 2500 hours, oil can be injected outside the machine for easy maintenance.

In addition, all parts of the fan have been treated with anticorrosion, and stainless steel and other materials can be used in special cases according to user needs.