Multi stage centrifugal blower is an important equipment widely used in many industrial fields. Its structure has unique design and careful layout to meet various special industrial needs.
A multi-stage centrifugal blower is mainly composed of three parts. The host part is the core of the entire device. The blower host is closely connected to the motor, usually directly connected to a common base, and power is transmitted through a direct coupling between the host and the motor. There are various types of electric motors, including general type, outdoor type, and explosion-proof type, to adapt to different working environments.
The accessory components also play an indispensable role in the normal operation of multi-stage centrifugal blowers. Bend pipes are used to change the direction of gas flow, while mufflers effectively reduce the noise generated by the fan during operation, keeping the noise level of the equipment at a low level, usually up to 85dB (A). Filters are also an important component, divided into general purpose wire mesh filters and special purpose (such as microporous aeration) low, medium, and advanced filters, used to filter impurities in gases, ensuring the cleanliness and dryness of the transported gas.
The supporting parts cannot be ignored either. There are various forms of imported disc valves for fans, such as manual and motorized types, which can control the inflow and outflow of gas according to actual operational needs. The motor control starter cabinet is responsible for controlling the starting, stopping, and other operations of the motor. Flexible joints ensure the flexibility of the connection while adapting to the operational status of the equipment.
From its specific mechanical structure, the D series multi-stage centrifugal blower is a multi-stage, single suction, and double support structure. The host rotates clockwise and has various highlights in its structural design. Its casing is made of gray cast iron, and fan casings below D400 are radially split and connected in series as a whole, which helps to adapt to different production and installation needs. The main shaft of the rotor is made of high-quality carbon steel, and the impeller is cast with aluminum alloy, which reduces weight while ensuring strength. Moreover, labyrinth seals are installed at the inlet ring of each stage impeller, between stages, and at both ends of the casing to prevent gas leakage. This enables the fan to stably maintain the transported gas within a predetermined pressure range, making it efficient for use in various occasions that require the transportation of air or special gases, such as smelting blast furnaces, iron furnaces, and coal washing jigs.
