Pump sealing
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The packing seal of the urea melting pump used in our company often leaks; cooling it with external water is required to prevent leakage. I was wondering if anyone here has any good methods that they could share! ! !
I didn’t encounter it, because a submersible pump was used
The reasons for leakage in packing seals are, first, the medium being transported, which reacts with the sealing packing and leads to seal failure; second, it may be that the clearance between the components of the pump is too large, preventing the formation of a throttling seal effect. It is recommended to replace the pump’s packing seal, using fluorinated lubricant to lubricate the packing seal. If you need help, please contact us promptly
Packing seals inherently have a certain level of leakage; if conditions permit, it is better to use a mechanical seal instead.
Hello from the fourth floor. What do you mean by \"lubrication with fluorine-based lubricant\"? Why is there lubricant in the pump’s packing seal? I’m not quite sure; please give me some guidance.
On the 2nd floor, we use water for cooling, as the urea melt pump transports liquid urea at a relatively high temperature; it is not used for lubrication. Also, what do you mean by graphite lubrication?
On the 5th floor, the medium we transport is liquid urea, which crystallizes very easily (with a freezing point of around 110°), so mechanical seals are not an effective solution
Switch to a mechanical seal and use steam for heating