What are the methods for adjusting the mechanical seal of a centrifugal pump?
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The seal compression requirement for ordinary centrifugal pumps is 4~6 mm. How should it be adjusted if this requirement is not met? Where should the shims be added or removed? Which expert can please provide an explanation with images in the end?
Just adjust the spring post, but it must be horizontal
The end-face specific pressure of the mechanical seal is what is commonly referred to as the compression amount. 1: Bellows seal, 4–6 mm; 2: Single-spring seal, 3–5 mm; 3: Multi-spring seal, 1.5–2.5 mm. To measure the spring compression amount of the seal surface, use a caliper – first measure the extension and retraction of the spring in its free state, then measure its length once it is installed in place; the difference gives the compression amount. Generally, the amount of compression can be adjusted by adding shims!