The maintenance and cleaning of the magnetic pump inevitably requires the disassembly process. For the precision equipment of the magnetic pump, the user must not take it lightly for its disassembly and assembly!
Before replacing the magnetic pump, first stop the magnetic pump to avoid medium leakage. When stopping the operation, slowly close the gate valve of the outlet pipeline, then turn off the power supply and stop the motor running. Secondly, close the inlet and outlet pressure (vacuum) gauges, and also close the gate valve of the suction pipeline during perfusion; if the ambient temperature is lower than the liquid solidification, the liquid in the pump should be drained to prevent frost cracking. Precipitation and crystallization should be cleaned in time after use.
Clean up the vicinity of the magnetic pump, remove the excess debris and objects that affect the disassembly, and prepare the special tools necessary for disassembling the magnetic drive pump. In the flammable and explosive environment, you must also use explosion-proof special tools such as copper hammers. class of tools.
Disassembly and assembly of magnetic pump
1. First of all, the disassembly sequence of the magnetic pump must be carried out. Some small assemblies can be disassembled as much as possible.
2. Please make a record every time you disassemble a component, such as the alignment dimension data of the magnetic pump and the motor rotor, the length dimension of the relevant components before and after disassembling the screws, the pump shaft, the bearing of the magnetic pump, the shaft sleeve of the magnetic pump, the balance plate and Impeller clearance of magnetic pump, etc.
3. The position and direction of each part before disassembly must be marked. After disassembly, it should be placed in the order of disassembly to prevent the wrong order and wrong position when reinstalling. Although some parts of the magnetic drive pump, such as the impeller, the bearing bush and the shaft sleeve of the magnetic pump, are interchangeable, the positions cannot be changed at will during assembly. Otherwise, the balance of the rotor of the magnetic pump will be disturbed, the original repaired problems will appear again, and even other failure problems will occur.
4. The original installation clearance is relatively small. During the disassembly process, it should be prevented from shaking from side to side and bumping the parts. If the guide rod can be replaced, it is better to replace the guide rod before disassembly to prevent the parts from swinging and bumping the parts.
5. When disassembling the two combined parts, if there is a top screw hole on the part, it should be disassembled with the top screw hole with the help of the top screw hole. When the two combined parts cannot be disassembled due to rust, corrosion or other reasons, the combined parts can be soaked in kerosene for a period of time and then disassembled; if they still cannot be disassembled, the outer layer of parts can be heated by heating before disassembling. When the outer layer of parts is thermally expanded, and the inner layer of parts has not yet expanded, the two parts should be separated as soon as possible.
6. Try to use special tools for disassembling pump products during the disassembly process.
7. The cleaning of the parts of the magnetic pump is also very important. Dirt and rust can be removed from parts with kerosene, diesel or a professional rust remover. For the parts of stainless steel magnetic pump parts that need to be welded, carbon tetrachloride, acetone, etc. can be used for cleaning. For dry rust, remove it with a shovel or sand it with sandpaper.
8. In the process of assembling parts, the gap correction inside the fluoroplastic magnetic pump can be adjusted by changing the thickness of the gasket, adjusting the tightness of the bolts, adjusting the balance of each bolt, and if necessary, you can also change the size of the parts. to achieve the purpose.
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