Adjustment of clearance of water pump during maintenance

u003cpu003eFor the overhaul of the water water pump stator components, it is necessary to check the radial clearance of each middle section first, and analyze the data to see if it is adjusted. The maintenance personnel first check the size of the mid-section stop and analyze whether it is in the normal range. Normally, the normal range is 0.04 mm~0.06 mm. If it exceeds 0.1 mm, it means that there is a problem with the component and it must be solved in time. The middle stopper plays an important role in the use of the water water pump. Its normal operation directly affects the working efficiency of the water pump. u003c/pu003eu003cpu003eu003c/pu003eu003cpu003e The second is the overhaul of guide vanes and pump casing. According to the manufacturing characteristics of the pump, the guide vanes are manufactured by QT technology and then put into use. If the guide vane is severely scoured in the water pump application, the guide vane should be replaced in time to avoid adverse effects. It should be noted that the newly replaced guide vane needs to be polished and cleaned before installation to ensure its smoothness and play its own role. Maintenance personnel should pay attention to the gap between the guide vane and the pump casing. If it is between 0.04 mm and 0.06 mm, it means that the part is operating normally and there is no problem. The guide vane and pump casing must be compacted to reduce wear. Operations such as back processing along the circumferential direction and moving away from the edge position can achieve its purpose. u003c/pu003eu003cpu003eu003c/pu003eu003cpu003e Finally, it is the adjustment of the gap between the water pump seal ring and the guide vane sleeve. These parts also influence each other. Install the sealing ring on the water pump casing and install the guide vane sleeve on the guide vane. It is necessary to pay attention to the materials used to meet the requirements of the pump. This part has a higher hardness requirement, and it will produce greater friction with the impeller during use. If the front and rear umbilicus of the impeller are found to be damaged, it means that the part has been heavily worn. Therefore, according to the specific conditions of wear, different maintenance plans should be adopted. For example, the maximum gap after wear should be within the control range, to ensure that there is enough space between the guide vane sleeve and the impeller, and to use the fastening screws and stop screws skillfully. . u003c/pu003eu003cpu003eu003c/pu003eu003cpu003e 2　 Clearance adjustment for the overhaul of the water pump rotor partsu003c/pu003eu003cpu003eu003c/pu003eu003cpu003e 2.1　Water pump bendingu003c/pu003eu003cpu003eu003c/p u003eu003cpu003e In the application of water pump equipment, the rotor speed is relatively high, which leads to a large load on the central shaft body. Therefore, in order to ensure the overall quality of the components, the shape of the shaft must be strictly required. If the bend is too large, the image has exceeded twice the specified 0.02 mm, then it needs to be straightened in time. This kind of bending will cause the water pump rotor to jump, and the greater the curvature, the greater the jump amplitude, and finally affect the gap between the seal ring and the guide vane sleeve. If this kind of problem is not dealt with in time, the gap will be enlarged, and even in the use of the water pump, obvious vortex will appear, causing vibration. u003c/pu003eu003cpu003eu003c/pu003eu003cpu003e 2.2 　Impeller and pump shaft assembly clearanceu003c/pu003eu003cpu003eIn the use of water pumps, some of them are multi-stage pumps. In this equipment application, the impeller and pump shaft are assembled through For clearance fit, the range needs to be controlled within 0.04 mm. Too large or too small a gap will increase the difficulty of assembly. Too large a gap will increase the beating range of the pump rotor, and too small will increase friction. The increase in the gap caused by the use of equipment can be repaired by spraying repair methods, mainly for the shaft section and the inner hole of the impeller. u003c/pu003eu003cpu003eu003c/pu003eu003cpu003e 2.3　Rotor small assemblyu003c/pu003eu003cpu003eu003c/pu003eu003cpu003e 2.3.1　Check before small assemblyu003c/pu003eu003cpu003eu003c/pu003e u003cpu003e The maintenance personnel should check the size of each part of the rotor to eliminate the difference in time and effectively control the value of the gap. Under normal circumstances, the run-out of each component on the shaft will not exceed 0.03 mm, then all components on the shaft should be checked for the verticality of the center line to ensure that there is sufficient distance between the mandrel and each set of components. Within the controllable range. The maintenance personnel rotate the set piece by hand. After one rotation, it will show less than 0.015 mm on the dial indicator. If you want to check the verticality by the same method, you can also place the kit on a flat plate and then measure it. But it should be noted that this measurement method cannot obtain the vertical error between the flat surface layer and the shaft centerline (public number: pump steward), but the parallel error between the upper and lower end faces to avoid wrong judgment. u003c/pu003eu003cpu003eu003c/pu003eu003cpu003e 2.3.2 　Rotor overhaulu003c/pu003eu003cpu003eu003c/pu003eu003cpu003e The overhaul of rotor components can be achieved through small rotor assembly, which also affects assembly The main content of quality. This operation is to eliminate the unbalanced moment and the couple moment in the rotation of the rotor, thereby reducing the wear caused by the rotor. Maintenance personnel need to adjust the axial distance between the impellers, align the centerline of the impellers, and adjust the size accurately. The axial expansion gap of some rotor sleeve components also needs to be paid attention to at all times, which causes different materials. Under thermal conditions, the expansion data of different components is inconsistent. In general, the expansion degree of the rotor sleeve is greater than the expansion degree of the pump shaft, so during the installation process, sufficient expansion gap should be reserved for the rotor sleeve. The expansion gap should also be controlled. If the expansion gap is too large, the rotor sleeve components cannot be fastened, and if the gap is too small, it can cause the rotor to appear hot and further damage the equipment. u003c/pu003eu003cpu003eu003c/pu003eu003cpu003e
J&T INDUSTRY CO.,LTD. is committed to fulfill the demands of our customers with using submersible pump.
J&T INDUSTRY CO.,LTD. aims to hire several additional experienced marketing professionals that can add to our existing talent-pool and help continue the steady growth of our business.
As the manufacturing procedure of submersible pump becomes more regulated, the costs to businesses will increase and the workforce will suffer as a result.
The best way of winter cover pump is to get a pool cover drain pump submersible pump.