Maintenance of chemical centrifugal pumps, the first should be familiar with the pump structure, and to grasp the four links. First, the correct demolition; Second, parts cleaning, inspection, repair or replacement; Third, according to the technical requirements of the well-assembled; Fourth, the assembly of the relative position between the various parts and the gap between the reasonable adjustments. The general precautions when disassembling are as follows: 1, The disassembly of the pump should be carried out according to the procedure, try not disassemble to certain assembly parts. 2, detect and record the original data, such as pump and drive rotor centering data, the main part of the bolt length before and after removal, bearing clearance and so on. 3, before demolition of the relative position of the parts and the direction to be marked, placed in an order to avoid overhauling after assembly error. Although some parts (such as impeller, bearing bush, sleeve, etc.) are interchangeable, they should not be arbitrarily exchanged during assembly. Otherwise, the balance of the rotor may be affected. The original running parts will be re-engaged, Other problems may arise. 4, the assembly of small parts clearance, remove the attention should be paid to prevent the left and right, so as not to damage the parts. When conditions permit, the pump is preferably installed before the removal of the guide rod to ensure safe and smooth removal. 5, for large horizontal split pump uncover, first of all should loosen the middle of the bolt, and then press the symmetrical order to loosen the bolt. In this way, upward buckling deformation may be prevented from occurring around the upper casing of the pump. 6, in the decomposition of the two connected parts, if the top wire hole, should be removed with top wire. Two-phase connection parts due to corrosion or other reasons can not be demolished down, the available loose agent or kerosene soak for a period of time and then demolished; if not still can not be demolished, the inclusive parts can be heated. When the contained parts are heated and expanded, and the parts that are not yet inflated, separate the two parts quickly. 7, try to use special tools when disassembled. In order to remove parts of the oil, dirt, available kerosene, diesel or special cleaning agent cleaning. The parts need to be welded, available carbon tetrachloride, acetone and other cleaning. On dry solid rust can be removed with a shovel, or polished with emery cloth. During the assembly process, the adjustment of the internal clearance of the pump is realized by adjusting the gasket, grasping the tightening force of the connecting bolt, and adjusting each of the screws specially designed for adjustment. If necessary, change the size of the relevant part of the part.
