3. What are the requirements for disassembling, assembling, and adjusting screw pumps?
Thread Content
Remove the shaft seal and bearing lock nut gently to avoid damaging the threads； Remove the connecting bolts between the bearing housing and the pump body, take off the inner end cover, and then the screws can be pulled out. Special tools are required to pull out the screws, with three or two screws being pulled out at the same time. During assembly and adjustment, a little lubricant should be applied to the areas where the end face of the screw comes into contact with the end cover, as well as between the screw and the bearing sleeve. This is done to prevent dry friction in these areas when the screw is turned by hand during the assembly process ； Tighten the coupling bolts between the outer end cover, bearing housing, and pump body. Perform the operation symmetrically and apply even force; turn the screw while tightening it. If it is difficult to rotate the screw after tightening, loosen the bolts and tighten them again.
When disassembling the screw pump, it is necessary to gently remove the shaft seal and bearing lock nuts to prevent damage to the threads. Then, remove the connecting bolts to separate the bearing housing from the pump body; after removing the inner end cover, the screw can be pulled out. Special tools are required to extract the screws, pulling out three or two screws at the same time. During assembly and adjustment, a small amount of lubricant should be applied to the area where the screw end face contacts the end cover, as well as between the screw and the bearing sleeve, to prevent dry friction. When tightening the bolts that connect the outer end cover, bearing housing, and pump body, it is necessary to act symmetrically and apply even force, turning the screw while tightening it. If turning the disk proves difficult after tightening, the bolts need to be loosened and tightened again. .