Customized anti-corrosion and explosion-proof exhaust fan made of stainless steel and fiberglass for the side wall fan

Application of SEF/WEX/DWSP/WEXD/DWEX Side Wall Fans

SEF, WEX, DWSP, WEXD, and DWEX are all wall mounted axial flow side wall fans, mainly installed on the exterior walls of buildings for indoor and outdoor air exchange and directional air supply and exhaust. They can adapt to ordinary environments and special working conditions such as explosion-proof and anti-corrosion. There are differences in configuration and functional emphasis among different models.

1、 Model features and scope of application

• SEFConventional basic side wall fans are suitable for general environments without corrosion or explosion-proof requirements, and are often used for exhaust in ordinary factories and warehouses.

• WEXStandard low-noise side wall axial flow fan, suitable for external wall ventilation in industrial, civil, and commercial general places, such as workshops, shopping malls, office buildings, etc.

• DWSPWall mounted air supply dedicated fan, with fresh air supply as its main function, suitable for factories, workshops and other places that need to supplement outdoor fresh air.

• WEXDLow noise optimized fan, with motor and pneumatic structure treated for noise reduction, suitable for places with high noise control requirements, such as offices, hospitals, schools, laboratories, etc.

• DWEXUniversal low-noise side wall fan, capable of expanding explosion-proof and anti-corrosion functions, suitable for conventional industrial sites and special environments such as explosion-proof and anti-corrosion, such as industrial plants, explosion-proof areas, food and pharmaceutical workshops, etc.

2、 General application scenarios

（1） Industrial plants and warehouses

Mechanical processing and welding workshops can be used to discharge smoke, dust, and high-temperature hot gases; Workshops with high levels of dust such as grain and feed can reduce the concentration of combustible dust; Chemical, electroplating, and painting workshops can emit acidic and alkaline gases, as well as volatile organic waste gases; Large warehouses and logistics centers can achieve heat dissipation and odor dispersion by using side wall ventilation to maintain indoor dryness.

（2） Civil and commercial buildings

Wall mounted installation can be used in office buildings, shopping malls, hotels, schools, and other places to save indoor space and complete ventilation with the help of a fresh air system; Underground garages and parking lots can emit car exhaust; Large space venues such as sports halls and exhibition halls can achieve rapid air exchange.

（3） Agricultural and environmental facilities

Greenhouses and breeding facilities can regulate temperature and humidity, and emit harmful gases such as ammonia; Sewage treatment plants, garbage transfer stations, etc. can use anti-corrosion models to discharge odors and corrosive gases, and the wind turbine rainproof structure can adapt to outdoor installation conditions.

3、 Applicable scenarios for special working conditions

（1） Explosion proof environment

SEF-EX, DWEX-EX, WEXD-EX and other explosion-proof fans are suitable for places such as petrochemical, storage tank areas, fine chemical workshops, coal mine ground buildings, etc. They can control the concentration of flammable and explosive media such as oil and gas, solvent vapor, gas, etc. The explosion-proof grade is commonly Exd Ⅱ BT4 and Exd Ⅱ CT4.

（2） Anti corrosion environment

The anti-corrosion fan made of stainless steel or fiberglass material is suitable for food and beverage processing workshops and has the characteristics of easy cleaning and corrosion resistance; It is also suitable for electroplating and pickling workshops, which can resist acid and alkali corrosion and extend the service life of equipment.

（3） Low noise environment

WEXD and low-noise DWEX are suitable for hospitals, laboratories, precision instrument rooms, libraries, archives, and other places to control operational noise and avoid interference with work environments and precision equipment.

4、 Installation and usage conditions

The fan adopts a square shell and can be installed on walls such as concrete walls, brick walls, and light steel wall panels. It is usually equipped with 45 °, 60 °, and 90 ° rainproof elbows to prevent rainwater from flowing back. The air volume range is about 400-29000m ³/h, the air pressure is 40-300Pa, and a direct drive structure is adopted. The working environment temperature is generally between -20 ℃ and+45 ℃, with a relative humidity of less than 99%. The commonly used medium has a dust content of ≤ 100mg/m ³.

5、 Selection reference

• Normal ventilation conditions: WEX and DWEX are selected

• High noise control requirements: choose WEXD

• Explosive hazardous environment: Choose SEF-EX and DWEX-EX explosion-proof types

• Presence of corrosive media such as acid and alkali: choose stainless steel or fiberglass anti-corrosion type

• Mainly using fresh air supply: choose DWSP

DWEX series side wall fan model classification

1. Basic conventional type (machine number 250mm~900mm)

DWEX-250、DWEX-300、DWEX-350、DWEX-400、DWEX-450、DWEX-500、DWEX-550、DWEX-600、DWEX-650、DWEX-700、DWEX-800、DWEX-900

2. Classify by voltage

• 三相 380 V（后缀 D4/D6）DWEX-250D4、DWEX-300D4、DWEX-350D4、DWEX-400D4、DWEX-450D4、DWEX-500D4、DWEX-550D4、DWEX-600D4、DWEX-650D4、DWEX-700D6、DWEX-800D6、DWEX-900D6

• Single phase 220V (suffix) E4）DWEX-250E4、DWEX-300E4、DWEX-350E4、DWEX-400E4、DWEX-450E4、DWEX-500E4、DWEX-550E4

3. Special functional type

• Explosion proof type (prefix B, explosion-proof type Exd Ⅱ BT4/Exd Ⅱ CT4, etc.) BDWEX-250D4、BDWEX-300D4、BDWEX-350D4、BDWEX-400D4、BDWEX-450D4、BDWEX-500D4、BDWEX-600D4、BDWEX-700D6、BDWEX-900D6

• Anti corrosion type (suffix F, made of fiberglass/stainless steel material) DWEX-250F、DWEX-300F、DWEX-400F、DWEX-500F、DWEX-600F、DWEX-700F、DWEX-900F

• Side wall air supply type DWSPDWSP-250D4、DWSP-300D4、DWSP-400D4、DWSP-500D4、DWSP-600D4、DWSP-700D6、DWSP-900D6

Customized anti-corrosion and explosion-proof exhaust fan made of stainless steel and fiberglass for the side wall fan