Cause analysis of pump damage after long-term idle of high-temperature pump:

1. Due to the long-term backlog of transported media on the end face of the mechanical seal, inactivity will produce carbon deposition, especially when the mechanical seal pump is transporting high viscosity materials. If the product does not operate for a long time, the materials will stick to the mechanical seal. When it is started again, the mechanical end face will be worn to cause pump leakage, and then the mechanical seal spring will be unscrewed to cause direct damage to the mechanical seal.
2. For example, when the ordinary pump valve is placed for a long time, because the manufacturer generally repeatedly uses the waste oil in the test bench pool during the experiment, it is inevitable that there will be some moisture in the oil. When this part of the waste oil containing moisture is retained in the pump cavity for a long time and in long-term contact with the gear and pump body, due to full contact with air oxidation and other reasons, the inner cavity will rust in a short time, resulting in the product can not rotate after installation and use. This kind of situation is more common in newly installed customers. Generally, customers buy in the local sales department, but often what they buy are the inventory or overstock of the shopkeeper. Therefore, remind customers to turn to whether their spindle rotates flexibly and evenly when buying locally, so as to avoid unnecessary trouble when buying back.

During installation, the oil seal is scratched by sharp edges such as splines, threads and keyways due to poor assembly, resulting in oil leakage. Therefore, special care should be taken during assembly. Do not directly knock the oil seal with a hammer. Assemble the oil seal with a special assembly fixture to ensure that the center of the oil seal is concentric with the shaft, especially the open parts such as threads, keyways and spline grooves on the shaft. Be sure to assemble with a guide sleeve. If the shaft diameter is the same, at least stick rubber tape or vinyl tape on the keyway spline for assembly, or use semi dry liquid packing.

I hope the above contents can help you better understand this product.