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Mechanical seal installation precautions
by：Lepu Seal
2022-09-15
Mechanical seal installation precautions
Mechanical seals play an important role in Grundfos mechanical seals in terms of working performance. When installing mechanical seals, failure to pay attention to the relevant details will lead to damage to the seals, which will also bring damage to mechanical equipment. Many hazards, etc., so we must pay attention to the following three matters when installing mechanical seals. (1) Determination of installation size When installing, the mechanical seal book or sample should be imported according to the product's operating instructions to ensure the installation size of the mechanical seal. (2) Before loading, the shaft (sleeve) and gland should be free of burrs, and the bearing should be in good condition; the seals, shaft, sealing cavity and gland should be cleaned. In order to reduce frictional resistance, the part where the mechanical seal is installed on the shaft should be coated with a thin layer of oil for lubrication. Considering the compatibility of the cartridge mechanical seal of the rubber O-ring, if oil is not suitable, soapy water can be applied. The structure of the floating static ring without anti-rotation pin should not be oiled, and should be installed in the gland in a dry manner. (3) Install the static ring together with the gland on the shaft first, being careful not to collide with the shaft, and then install the moving ring assembly. The set screw of the spring seat or transmission seat should be evenly tightened several times. Before the gland is not fixed, push the compensation ring by hand for axial compression. After loosening, the compensation ring can automatically spring back without jamming, and then lock the gland bolts evenly.
Mechanical seals play an important role in Grundfos mechanical seals in terms of working performance. When installing mechanical seals, failure to pay attention to the relevant details will lead to damage to the seals, which will also bring damage to mechanical equipment. Many hazards, etc., so we must pay attention to the following three matters when installing mechanical seals. (1) Determination of installation size When installing, the mechanical seal book or sample should be imported according to the product's operating instructions to ensure the installation size of the mechanical seal. (2) Before loading, the shaft (sleeve) and gland should be free of burrs, and the bearing should be in good condition; the seals, shaft, sealing cavity and gland should be cleaned. In order to reduce frictional resistance, the part where the mechanical seal is installed on the shaft should be coated with a thin layer of oil for lubrication. Considering the compatibility of the cartridge mechanical seal of the rubber O-ring, if oil is not suitable, soapy water can be applied. The structure of the floating static ring without anti-rotation pin should not be oiled, and should be installed in the gland in a dry manner. (3) Install the static ring together with the gland on the shaft first, being careful not to collide with the shaft, and then install the moving ring assembly. The set screw of the spring seat or transmission seat should be evenly tightened several times. Before the gland is not fixed, push the compensation ring by hand for axial compression. After loosening, the compensation ring can automatically spring back without jamming, and then lock the gland bolts evenly.
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