How to maintain and disassemble a self-priming pump

The characteristics of the self-priming pump are simple and reliable structure, durability, and it is widely used in industrial production. Under normal circumstances, we generally do not need to disassemble and maintain the self-priming pump frequently, but when a fault is found, we need to solve it at any time. The following Taiheda editor shares with you the maintenance method of the self-priming pump and the order of disassembly and assembly of the self-priming pump. 1. Maintenance method of self-priming pump 1. Maintenance of rolling bearings. When the self-priming pump has been working for a long time, its bearings are worn to a certain extent, and new bearings must be replaced. 2. Maintenance of front and rear sealing rings. When the sealing rings are worn to a certain extent, we also need to replace new sealing rings. 3. Maintenance of mechanical seals. In the state where the mechanical seal does not leak, we generally should not disassemble and inspect it. If there is a leak at the lower end of the self-priming pump bearing body or a serious leak occurs, we should disassemble and inspect the mechanical seal. When installing and disassembling the mechanical seal, we must take it lightly and pay attention to the cleanliness of the mating surface. It is strictly forbidden to knock and collide, and protect the mirror surface of the static ring and the dynamic ring. 2. Disassembly and assembly sequence of self-priming pump 1. Remove the coupling or remove the motor or. 2. Disassemble the assembly of the bearing body, and then check the radial clearance between the front ring and the impeller, and also check whether the nut of the impeller is loose. 3. Remove the nut of the impeller, and then check the radial clearance between the rear seal ring and the impeller. 4. Loosen the fixing screw of the mechanical seal, and then pull out the dynamic ring part of the mechanical seal. At the same time, check the fit of the static ring and the dynamic ring end faces, and then check the sealing of the O-ring. 5. Loosen the fixing screw of the coupling, and then pull out the coupling of the self-priming pump. 6. Remove the bearing end cover of the self-priming pump, and disassemble the pump shaft and bearing. 7. The installation order is the opposite of the disassembly order. The above is the maintenance and disassembly method of the self-priming pump. Only by regularly maintaining the self-priming pump can the use of the self-priming pump be extended.