Mine multistage centrifugal drainage pump packing seal repair methods

mine multistage centrifugal drainage water pump packing seal maintenance methods:

1, clean the stuffing box, and check whether there is mine multistage drainage water pump shaft surface scratches, burrs, etc. Packing box should be clean, shaft surface should be smooth.

2, check the shaft runout, unbalance of the rotor beating should be within the scope of the permit, in order to avoid excessive vibration, adverse to the packing.

3, in the packing box and shaft surface sealant or adapted to medium of lubricant.

4, to the roll packing packing, it sticks to take root and shaft neck size is the same, to conceal its packing, then cut with the knife, knife edge best 45 ° incline.

5, packing to loading by root, not to fill a few. Packing method is to take a root, which are coated with lubricant, hands each holding one end of the filler interface, along the axial, spiral, coat again from the incision into the journal. Not along the radial direction, in order to avoid interface.

6, in a material or the shaft with stuffing box size the lower hardness of the metal sleeve, push the packing deep into the box, a certain pressure and gland of shaft sleeve, make more pre compression of packing. Pre compression is 5% ~ 10%, the biggest to 20%. A week then axis rotation, remove the collar.

7, in the same way, loading the second and third. Note that when packing for 4 ~ 8, when loading, should make the interface 90 ° staggered; Two packing 180 ° staggered; 3 ~ 6 120 ° staggered, in case of leakage through interfaces.

8, after the last filler loading, application of gland pressure, but pressure force shoulds not be too big. Turn the shaft by hand at the same time, lead to the parabola distribution assembly clamping force. And then slightly relax a press cover.

9, running test, if not sealed, compress some packing; If the fever is too big, loosen up. So the drip leakage and heat is transferred to the only a little ( Temperature in packing position of only 30 ~ 40 ℃ higher than the environment temperature) , can be put into use.

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