SWF series pipeline mixed flow fan industrial plant exhaust fan

SWF series pipeline mixed flow fan industrial plant exhaust fan

SWF series pipeline mixed flow fan industrial plant exhaust fanThe structure adopts a straight outer tube, conical hub, and twisted wing shaped blades. It is a fan that is between an axial flow fan and a centrifugal fan. The impeller of a mixed flow fan allows air to move both centrifugally and axially. The movement of air inside the casing mixes the two forms of motion, axial flow and centrifugal flow, hence it is called "mixed flow". Characteristics: Mixed flow (oblique flow) fan, with a higher wind pressure coefficient than axial flow fan and a higher flow coefficient than centrifugal fan, used in situations where both wind pressure and flow rate are "neither too big nor too small". Simultaneously possessing the characteristics of simple and convenient installation. The mixed flow fan combines the characteristics of axial and centrifugal fans, and its appearance looks more like a traditional axial fan. The casing may have an open inlet, but more commonly, it has a right angled curved shape that allows the motor to be placed outside the pipeline. The excretory shell slowly expands to slow down the velocity of air or gas flow and convert kinetic energy into useful static pressure. SWF (B), also known as HL3-2A low-noise mixed flow fan, is a new type of fan that is between axial and centrifugal fans. It has the characteristics of high pressure of centrifugal fans, high flow rate of axial fans, high efficiency, good energy saving, low noise, and easy installation. The fan has a novel design, compact structure, small volume, light weight, and is easy to install. It is widely used in ventilation and air exchange situations in industrial and mining enterprises, as well as civil and commercial construction projects.

SWF mixed flow fan model classification:

According to the structural form:

SWF (A) [A is a high flow type], SWF (B)=HL3-2A [B is a high pressure type]

Divided by external structure:

① SWF (A) - I, standard type [linear cylindrical structure, horizontal air inlet and outlet]

② SWF (A) - W, roof type [standard type with square foundation base and rain cap added]

③ HLF-A, box type [equipped with A or B type mixed flow fan, and additionally equipped with box frame and soundproof enclosure]

④ SWF (B) - X, silencing type [adding a silencing collector at the air inlet to reduce the operating noise of the fan]

Classified by environment:

① Standard type (equipped with Y series motor, suitable for environments with non flammable, explosive, and non corrosive air)

② Explosion proof type (equipped with ExdIIBT4 or ExdIICT4 explosion-proof motors, suitable for environments with flammable, explosive, and non corrosive air)

③ Anti corrosion type (equipped with anti-corrosion fiberglass or stainless steel material, suitable for non flammable, explosive environments containing corrosive air);

④ Explosion proof and anti-corrosion type (equipped with ExdIIBT4 or ExdIICT4 explosion-proof motors, and made of anti-corrosion fiberglass or stainless steel material; Suitable for environments that are flammable, explosive, and contain corrosive air

According to the speed regulation method of the electric motor:

① Standard type (equipped with a single speed motor)

② Dual speed type (equipped with dual speed electric motor)

③ Variable frequency type (equipped with variable frequency motor)

SWF mixed flow fan, ducted ventilation and smoke exhaust fan, positive pressure supply fanInstallation precautions:

1. At the inlet of the mixed flow fan, a collector and protective net can be installed. Before installation, the mixed flow fan should be carefully checked for any quality problems such as damage or deformation caused by transportation. If there are any, it should be repaired and completed before installation.

2. When installing a mixed flow fan, it is necessary to check whether each component is loose. The gap between the blades and the air duct should be uniform, and the blades should not touch each other. The weight of the pipeline connecting the air outlet should not be borne by the air duct of the mixed flow fan. Additional support is required during installation.
3. The base of the mixed flow fan must match the foundation plane and cannot be forcibly connected by knocking to prevent deformation. During installation, the base should be calibrated, shims should be added, the mixed flow fan should be kept in a horizontal position, and then the anchor bolts should be tightened.
4. After the installation of the mixed flow fan is completed, it must undergo testing. Only after successful testing can it be put into formal use.