Impeller connection type of FSB pump
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Dear seniors, what is the impeller connection method for this type of FSB pump? The coupling uses elastic pin joints, rather than the common three-claw type
What is the function of this lock nut? Pull-type ones don’t have such a lock nut
The common type is of the tie-bar kind; does yours get fixed to the shaft by the compression and deformation of the lock nut? Just take a look at the pump’s cross-sectional view and you’ll know
Today I moved the motor of this pump. There is also a pull rod at the coupling; since there’s already a pull rod, then what’s the need to add a lock nut at the mechanical seal? The pump is from Jiangsu Fal
Behind the lock nut is the mechanical seal; is it used to compress the mechanical seal? This pump has a double-layer pump shaft, and any type of coupling can be used, depending on your requirements at the time of purchase.
No, the mechanical seal is secured by the collar on it; this nut does not come into contact with the mechanical seal
This is called an impeller nut, and it is installed at the front end of the impeller’s cone shank. Function: It assists in removing the taper between the impeller and the pump shaft. During disassembly, the impeller nut is tightened by applying force towards the end of the pump shaft (clockwise when viewed from the impeller inlet). By the way, regarding the filter slurry pump – does the medium transported by this pump contain particulate impurities? If it includes it, is this pump good? :lol
The medium actually contains no particulates; the appearance of residue is due to the fact that the pump has not been used for a long time, as well as the crystals in the magnesium sulfate solution. As soon as this pump runs dry, the shaft where the impeller and mechanical seal are located deforms, because it’s made of plastic, and plastic melts when heated. Once, during operation, the impeller blades and even the pump cover were deformed. Repairing pumps like this is a problem for us, as the impeller cannot be removed; when it gets damaged, it has to be replaced with a new one. Desulfurization of a steel plant in a region that ranks first in global steel production