Deactivate the pump to prevent freezing
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How can freezing be prevented when a pump is shut down? If only a small amount of water remains at the bottom of the pump casing, preventing the pump from rotating, will this affect the bending degree of the pump shaft?
Disabling machine pumps to prevent freezing is mainly aimed at stopping the water remaining inside the pump from freezing at low temperatures, which could otherwise cause damage to the pump body or its internal components. Common methods include: 1. Draining water: After stopping the pump, the water inside the pump and in the pipelines must be completely drained. 2. Antifreeze: In some cases, antifreeze may be added to the system to prevent freezing. 3. Insulation measures: Use insulation materials to keep the pumps warm. If a small amount of water remains at the bottom of the pump casing and freezes, it may cause the pump to get stuck when started; this will not affect the bending degree of the pump shaft for the time being. However, if it is started forcefully, it may cause damage to the pump shaft, and over time this could lead to the shaft bending. Therefore, it is important to ensure that there is no ice in the pump before starting it. .
“How can freezing be prevented when a pump is shut down? If only a small amount of water remains at the bottom of the pump casing, preventing the pump from rotating, will this affect the bending degree of the pump shaft? ” These are two questions. 1. To shut down a pump, it is usually sufficient to drain the liquid from the pump and its pipelines. 2、The inability to turn the shaft is related to the force applied and the freezing condition. As for the factors causing pump shaft bending, they are related to freezing. Imagine that there is water at the bottom of the volute; as it freezes, its volume increases, which increases the distance between the impeller and the bottom of the volute, and this can cause the main shaft to bend. For reference.
Were the pumps taken apart during the shutdown period to prevent freezing?
It generally has no impact on the shaft, but it has a significant effect on some small wear-prone components, such as mouth rings, as well as static and dynamic seals. To prevent freezing, one can simply dry it out, use household heating devices, or apply hot water or steam for heating.