In some specific working environments, the centrifugal fan needs to be sealed, so what is the way to increase the sealing of the centrifugal fan? Let's take a simple look at it today, how to add seal to centrifugal fan.
1. Open the casing of the centrifugal fan, remove the moving transmission group and impeller, and install a new mechanical seal or packing seal. The advantage of this method is that the new sealing form is optional and the installation specification is standard. The disadvantage is that the workload is heavy, it takes a lot of time.
2. Add a simple packing seal without any disassembly of the centrifugal fan.
The two BANYUAN workpieces that are not marked with the casing are also sleeved on the transmission shaft, and the groove is welded to the casing to form a ring. In this way, the drive shaft passes through two rings and the grooves are opposite. Packing seal each set consists of two compression parts, a piece of packing and two four BANYUAN workpieces. First, the two working pieces marked with casing are welded on the shaft and the groove is welded into a ring in the direction of bearing box. Secondly, weld the ring marked with the shell on the shell, and pay attention to the inner circle of the ring to be flat with the gap of the drive shaft. Weld the two compression parts bolts hex HD separately on the casing so that one end of the compression parts can be pressed on the ring. Finally, cut a piece of packing around the groove of the ring, fasten the nut of compression parts, and press one end of the ring tightly. This method only needs to machine the workpiece in the early stage, and the installation workload in the later stage is very small, it is very suitable for centrifugal fans that do not require sealing.
