Daily Maintenance and Care of Explosion-Proof Cabinet-Type Centrifugal Fans

Daily Maintenance and Care of Explosion-Proof Cabinet-Type Centrifugal Fans

Explosion-proof cabinet-type centrifugal fans are fluid-moving machines that rely on mechanical energy input to increase gas pressure and discharge gas. The maintenance of explosion-proof cabinet-type centrifugal fans is critical, as it directly impacts the operation of the entire mechanical process. 1. Maintenance of Explosion-Proof Cabinet-Type Centrifugal Fans The impeller is the rotating component of an explosion-proof cabinet-type centrifugal fan, and its function is to convey gas from the fan to the outlet. The impeller of an explosion-proof cabinet-type centrifugal fan consists of a back plate, a front plate with an inner ring, and blades. The blades are formed by curved blades with a large radius of curvature. Verify that the impeller is securely fastened to the bearings, and check for cracks, wear, and other defects during initial operation and all periodic inspections. The impeller must be kept clean; dust and rust must be regularly removed with a wire brush. The longer the fan operates, the more unevenly dust accumulates on the impeller, leading to imbalance, fan vibration, and bearing damage. After repairing the impeller, dynamic balancing must be performed again. Before dynamic balancing, ensure that all mounting bolts are securely tightened. If the impeller operates in an unbalanced state for an extended period, these bolts may become loose. The axial position of the propeller must be checked in accordance with the stainless steel fan’s installation layout and the dimensions of the collector inserted into the propeller inlet ring. Verify the radial clearance between the collector and the sleeve. Adjust the collector or sleeve as needed to ensure the correct clearance. This ensures that the side panels of the housing air chamber are correctly positioned relative to the main shaft and the main shaft seal. Please verify that the edge positions of the frame and the inlet and outlet of the intake chamber comply with the drawings and the requirements of the connecting ductwork. II. Maintenance of the Housing and Intake Chamber Apart from periodically inspecting the housing and intake chamber for severe wear and removing heavy dust, these components require no maintenance. Periodically inspect all mounting bolts and adjust the foot spring washers to the installation height specified in the drawings. 3. Maintenance of the Main Shaft and Coupling The main shaft must be kept clean. Special attention must be paid to the position of the shaft end seals where the main shaft passes through the side panels of the inlet. These areas may corrode due to condensation caused by minor air leaks. If the explosion-proof cabinet-type centrifugal fan becomes unbalanced over time, verify the flatness of the main shaft as much as possible. The coupling must be kept clean, and the tightness of the connection should be checked regularly. 4. Maintenance of the Bearing Section Frequently check the oil supply and lubrication of the bearings. If there is a leak in the reservoir, tighten the end cover bolts. If this is not possible, replace the seal. When using standard bearing grease, it must be replaced at least once every 6 months. Please check this at least once every 6 months. Daily maintenance and care for explosion-proof cabinet-type centrifugal fans. The above section introduces stainless steel fans. Maintenance of stainless steel fans is very important, and regular inspection and maintenance are also crucial.