DWEX series explosion-proof side wall axial flow fan industrial exhaust ventilation equipment

Description :

  The DWEX series explosion-proof side wall axial flow fan is a ventilation equipment designed specifically for flammable and explosive environments, mainly solving the problems of air circulation and exhaust emissions in hazardous areas such as petroleum, chemical, and pharmaceutical industries. The fan is driven by an explosion-proof motor, which can effectively prevent explosion accidents caused by electric sparks and ensure production safety. Typical operating conditions include Zone 1 and Zone 2 locations containing explosive gas mixtures of Class II A, B, and C, as well as environments with temperature groups T1-T4. The DWEX series explosion-proof side wall axial flow fan has a compact structure, installed on the side of the wall, does not occupy indoor space, and is suitable for industrial plants and warehouses that require lateral exhaust or supply air.

  The shell of the DWEX series explosion-proof side wall axial flow fan is usually made of high-quality steel plates welded together, and the surface is treated with electrostatic spraying, which has good anti-corrosion and anti rust properties. The impeller has undergone dynamic balance correction, running smoothly and with low noise. The explosion-proof motor meets the ExdII BT4 or ExdII CT4 explosion-proof rating standards, with a protection level of IP54 or above, and is suitable for harsh working environments. Fan interface flange size standard, easy to connect with pipelines. The implementation standards follow GB3836.1-2010 "Explosive Atmosphere Part 1: General Requirements for Equipment" and JB/T10562-2006 "Technical Conditions for General Purpose Axial Flow Fans". The DWEX series explosion-proof side wall axial flow fans undergo strict insulation resistance testing and voltage withstand testing before leaving the factory to ensure reliable electrical safety performance.

  When selecting the DWEX series explosion-proof side wall axial flow fan, the specific model should be determined based on the on-site air volume requirements, static pressure loss, and explosion-proof level requirements. Suitable for workshops, laboratories, paint rooms, and other places that require explosion-proof ventilation. If there are corrosive gases in the environment, it is recommended to choose models made of stainless steel or special anti-corrosion coatings. Compared with ordinary axial flow fans, the motor housing of DWEX series explosion-proof side wall axial flow fans is thicker, the sealing of the junction box is better, and special explosion-proof flexible connecting pipes must be used for wiring. Not suitable for ordinary civil ventilation scenarios without explosion-proof requirements, nor for emissions containing fiber dust or high-temperature smoke, in order to avoid clogging the impeller or damaging the motor insulation.

  When installing the DWEX series explosion-proof side wall axial flow fan, it is necessary to ensure that the wall opening size matches the fan flange, and the fixing bolts need to be equipped with spring washers to prevent loosening. Wiring must be operated by professional electricians, strictly following explosion-proof electrical installation specifications, and the grounding resistance should not exceed 4 ohms. In daily maintenance, dust and oil stains on the impeller should be regularly cleaned, the air inlet should be kept unobstructed, and the motor insulation resistance and bearing lubrication should be checked every six months. If abnormal vibration or increased noise is found in the fan, the machine should be stopped immediately to check if the impeller is deformed or if the bearings are worn. The explosion-proof surface of the DWEX series explosion-proof side wall axial flow fan must not be bumped or scratched. During maintenance, the integrity of the joint surface must be protected to ensure the continuous effectiveness of the explosion-proof performance.

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