1. General
CBL series marine explosion-proof centrifugal fans (simply the explosion-proof fans) are designed and manufactured according to GB/T11799-2008《Marine Explosion-proof Centrifugal Fans》GB3836.1-2010《Explosive atmospheres-Part 1 :Equipment-General requirements》andGB3836.2－2010《Explosive atmospheres-part 2 : Equipment protection by flameproof enclosures”》.
This series fans have been examined and proved up to standard by the Explosion-proof Inspection Authority of the PRC and have got the certificate of inspection. They have also been examined by the register of shipping of RC and have got the certificate.
2. Features
Explosion-proof, safe and reliable in operation. Small size, light weight, and low noise, well anticorrosive, strongly capable of resisting swing, vibration and shocking.
3. Structural
There are two structural types:
Type I (direct-coupling type), and type II (separate cabins type). The construction is non-sparking.
The structure of type I is a motor direct coupling one, the impeller is mounted directly on the motor start, and the casing is fixed on the flange of the explosion-proof motor.
The type II is a separate structure, the fan and the motor are put into different cabins, with a driving device, flexible couplings, and the driving device consists of bearings, bearing-box, shaft, brass rings, and stuffing box. It can be oiled and measured the temperature. One side is fixed on the fan, and the other side will be mounted on the bulkhead.
The fan may be made into a horizontal or vertical, single=stage; single-drawing and airtight structure by the customer’s requirement.
4. Model explanation
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