Mechanical seal for kettle The manufacturer introduces the leakage point of chemical pump

There are many kinds of mechanical seals for pumps with different models, but there are mainly five leakage points:

Seal between shaft sleeve and shaft

Seal between moving ring and shaft sleeve

Seal between dynamic and static rings

Sealing between stationary ring and stationary ring seat

Seal between seal end cover and pump body

Phenomenon: the seal makes a popping sound (end face popping sound) during operation

Possible causes: the sealing liquid vaporizes at the sealing interface; Strengthen cooling of sealing surface

Solution: Add bypass flushing pipeline (if not available) and expand the opening on bypass flushing pipeline and/or gland.

Phenomenon: continuous leakage of sealing

Possible causes: uneven surface; The graphite sealing surface bubbles; Thermal deformation of sealing surface

Solution: During installation, the auxiliary seal was scratched and the O-ring was aged. Due to compression deformation, the auxiliary seal became hard and brittle. Due to chemical action, the auxiliary seal became soft and sticky.

Phenomenon: spring failure

Possible causes: due to corrosion, metal accessories are damaged and transmission mechanism is corroded

Solution: check the incorrect installation size, check whether the inappropriate materials and seal types are used to improve the flushing cooling pipeline, check whether the gland bolt torque is too large, which leads to the deformation of the gland, check whether the specific pressure of the gland gasket is appropriate, check whether there are other solid particles between the sealing surfaces, and re polish the sealing surface if necessary. Check the cracks on the sealing surface and replace the main and matching sealing rings.

Phenomenon: During operation, the seal emits a squealing sound

Possible cause: insufficient lubricant at the seal

Solution: Add bypass flushing pipeline (if not available) and expand the opening on bypass flushing pipeline and/or gland.