Purpose

The 4-72 centrifugal fan is mainly used for indoor ventilation or air delivery in general factories and large buildings, as well as for transporting non-combustible, non-explosive, non-volatile gases that are harmless to humans and non-corrosive to steel. The B4-72 centrifugal fan can exhaust flammable and volatile gases; the F4-72 centrifugal fan is mainly used for transporting corrosive gases. However, the gases transported by the 4-72, B4-72, and F4-72 centrifugal fans must not contain viscous substances, and the content of dust and hard particles must not exceed 150mg/m³ ³ The gas temperature must not exceed 80℃.

The performance and selection of parts and base dimensions of the B4-72 fan are consistent with the 4-72 type, and can be selected according to its sample. The basic structure of this fan is the same as that of the 4-72 type. For 2.8A~6A, a B35 motor with flange and base is used; for N6~12C, D motors, the YB series corresponding to the Y series in the table is selected, and the installation type is B3.

The F4-72 centrifugal fan is made of stainless steel, fiberglass, or other corrosion-resistant materials, and its performance and base dimensions are the same as those of the 4-72 centrifugal fan.

Product Overview

The 4-72A centrifugal fan can transport air and other non-combustible gases that are harmless to humans and non-corrosive to steel. The gas is not allowed to contain viscous substances, and the content of dust and hard particles must not exceed 150mg/m³. The gas temperature must not exceed 80℃. This fan is widely used in environmental protection and dust removal, industrial and mining enterprises, large buildings, hotels, restaurants, etc., for indoor ventilation, exhaust, and smoke removal.

Product Overview

The 4-72C centrifugal fan uses belt transmission, and the impeller is mounted on the transmission shaft, which can withstand high temperatures. Ordinary iron plates of type C can withstand 150℃, manganese plates can withstand 180℃, and 304 stainless steel can withstand high temperatures of 200-250℃.

It can transport air and other non-combustible gases that are harmless to humans and non-corrosive to steel. This fan is widely used in high-temperature environments and large-scale occasions such as environmental protection and dust removal.

Performance Overview

1. The 4-72 centrifugal fan has good exhaust effect and is very suitable for pipeline exhaust or air supply.

2. Strong applicability. The 4-72 centrifugal fan is commonly used in pipeline air transportation, and can be used in places without corrosive, flammable, or explosive gases.

3. The 4-72 centrifugal fan adopts a reasonable impeller angle design based on air fluid mechanics. During operation, there is no mechanical friction, and the reasonable blade profile minimizes noise; the noise generated by the 4-72 centrifugal fan is high-frequency noise, and sound insulation can be achieved with obstacles.

4. Stable operation. The optimized impeller design minimizes axial force, and the high-efficiency impeller, after static and dynamic balance correction, ensures stable operation of the whole machine. The bearing amplitude is relatively small without any vibration damping device.

5. Low maintenance. Because its impeller adopts a backward-curved design, it is not easy to adhere to dust and other media, and the motor uses imported bearings.

6. Convenient maintenance. Some models can be equipped with cleaning doors, and maintenance and cleaning can be performed without disassembling the machine, saving time and effort.