CBZ series explosion proof axial flow fans for marine use are designed and manufactured according to GB11799-89《Marine explosion proof axial flow fans》, and general description and explosion-proof “d” of GB3836-2000 《Electrical apparatus for explosive atmospheres》 and 《Rules and regulations for the construction and Classification of Seagoing Steel Ships》. This series fans have been examined and approved by the Explosion-proof Inspection Authority of the PRC and have got the Certificate of Conformity. They also have been examined and approved by CCS (China Classification society) and have got the certificate. Advantages • Explosion-proof, safe and reliable in operation • Well anticorrosive • Strongly capable of resisting vacillation • Vibration and shocking Specifications/Types There are three structural types:type I (deck type), type II (piping type) and type III (separate cabins type).The structure of whole set is spark free. Type I explosion-proof fan has a hood and an explosion-proof motor installed in the top of the machine frame and a wire mesh guard with 4 openings per square cm. Made of stainless steel, surrounding the frame. The fan is vertically fixed on the deck. It can be delivered for air supply of air extraction. Type II explosion-proof fan has no hood, built-in type explosion-proof motor is mounted on the housing by the down streamguide vane. It can be installed vertically or horizontally, and can also be installed on the deck. It may be used for pumping or sending air. According to the customers’ special requests, the fan can be made into a separate structure-- type III. The fan and the motor are put in different cabins, with a driving device, a sealed box and two pairs of flexible couplings. It is used primarily for drawing out noxious air of dangerous compartment. Taking a front view from the motor side, the impeller should be turning clockwise. Applications The explosion-proof symbol of explosion-proof fans is EdⅡBT4 They can be delivered for gas mixtures or vapor containing combustibles and explosives, for ordinary air, for sea air containing salt fog, for air containing oil fog and other corrupt air supply or extraction. These explosion-proof fan series are best suited to pumping out gas mixtures or vapor containing combustibles and explosives in oil cabins holds, pump-rooms, battery cabins, ammunition cabins, hangars, paint houses, etc.They can also be used for ventilation of other compartments of shipping and corresponding place of land's. AC 50Hz, 380V or 60Hz, 440V type YB-H(explosion insular) for marine use may be mounted on these fans.
