The FBCDZ series explosion-proof type, forced-inward, counter-rotating axial flow local ventilator is a versatile new type of local ventilator. This model features a compact structure, low noise, and high efficiency. It has strong adaptability and, with two motors installed, each driving a blade wheel, it can operate as a whole unit or individually. Therefore, using this model can reduce energy consumption and save costs, making it an ideal equipment for local ventilation in mines. The ventilator is explosion-proof for coal mines, with the explosion-proof mark: Exd1.

Structure and Working Principle: The fan consists of an intake, a silencer, a duct, an explosion-proof motor, and a impeller. The outer shell and inner tube components are all welded from steel plates. The inner tube is lined with perforated plates and glass wool silencers. Both motors are connected to the duct with bolts through flanges. The noise-reducing ducts of all stages are interconnected with bolts through flanges, featuring a compact and durable structure, safe operation, and easy maintenance. The motor is a YBE series explosion-proof three-phase asynchronous motor, grade II, voltage level 380/660V, cooled by the airflow conveyed by the impeller. The explosion-proof type of the motor is for coal mines, with the explosion-proof mark: Exd1. Power is supplied by a cable passing through the housing and connected to the motor. Our factory's fans are factory-equipped with motors wired for standard connection, which can be changed to Y connection as per customer requirements. The phase sequence UVW of the motor must correspond to the phase sequence ABC of the external power supply. Working Principle: The primary and secondary impellers are driven by two explosion-proof motors of the same capacity and model. After the air enters the primary fan impeller and gains energy, it is discharged through the secondary fan impeller. The secondary fan impeller combines the static vane grid of a common axial flow fan and adds energy to the airflow, achieving higher efficiency and pressure than a common axial flow fan. Application Conditions: Used for underground excavation, coal mining operations, and other sites as well as on the surface.