When selecting the manufacturer of boiler centrifugal fan, it is necessary to select the manufacturer with rich technical experience and strength. A good centrifugal fan needs to be equipped with accessories, and the installation of bearing box of centrifugal fan needs.
Pay attention to the following items:
1. Before installation, check the appearance of the bearing box of the boiler centrifugal fan for cracks and other problems. If there are cracks, do not assemble; Only in the bearing box without cracks can the side covers at both ends be removed for dimensional inspection; Only when the size of the bearing hole is qualified can it be assembled.
2. Remove the box bolts, remove the upper cover of the bearing block, wipe the upper cover of the bearing block and the bearing block of the base with clean cotton yarn, and wipe the joint surface of the upper cover and the base to avoid dirt.
3. Place the pre-installed boiler centrifugal fan bearing and shaft assembly on the bearing seat, and fix the top of the fixed end bearing. Apply glue on the box surface of the bearing block, and evenly apply a layer of mechanical oil resistant sealant with a width of 5~7 room meters on the inside of the bolt hole. The two ends need to be punched out and dried for 10 minutes. Close the top cover and assemble the bolts of the fixed box. See photos for glue.
4. Assemble the small end face of the oil retaining ring to the position 15mm away from the bearing locknut. Use the side cover to feed the oil baffle ring. The feeding part shall combine the side cover with the bearing housing port, then return to the side cover, and use a screwdriver to push the oil baffle ring of the boiler centrifugal fan inward for 3mm. At this position, a clearance of 4 chamber meters is left at the non-fixed end. See the schematic diagram for the assembly of oil retaining ring.
5. Side cover assembly The side cover mouth should be placed horizontally upward, the matching O-ring should be placed in the O-ring groove, the O-ring should be fixed with glue, the boiler centrifugal fan should be assembled at the lowest position of the side cover oil return hole, the side cover should be put into the bearing hole, the side cover bolts should be tightened evenly, the clearance between the side cover shaft hole and the shaft should be adjusted evenly, and the anchor bolts should be tightened.
6. For the bearing box with gland, adjust the space between the gland extraction hole and the shaft, and balance and tighten the bolts. The asbestos rope or packing is installed between the side cover and the gland of the boiler centrifugal fan plant, and the gland bolt is gradually fixed with use.
