Mechanical seals have very high requirements on equipment quality Mechanical seals

Mechanical seals have very high requirements on equipment quality

2021-06-29 09:52

The equipment quality requirements of mechanical seals are very high. Since it is a torsion mechanical oil seal equipment, it is placed on a pair or more than one pair of mechanical seal end faces perpendicular to the torsion axis between the pressure of the mechanical seal of the fluid water pump and the elastic force of the compensation ( Or magnetic force) and the cooperation of the auxiliary seal, the anti-sticking and relatively slipping prevent fluid leakage. Therefore, great attention must be paid to avoid installation deviations during installation.

(1) The gland should be tightened after the coupling is aligned, and the bolts should be supported evenly to prevent the end face of the gland from deflecting. Check each point with a feeler gauge, and the deviation should not exceed 0.05mm.

(2) Check the joint clearance (that is, concentricity) between the gland and the outer diameter of the shaft or sleeve, and the surroundings should be even. Use a feeler gauge to check that the tolerance of each point is not greater than 0.01 mm.

b. The amount of spring compression should be carried out according to the regulations. It is not allowed to be too large or too small, and the deviation is required to be 2.00 mm. Excessively increasing the specific pressure of the end face and accelerating the wear of the end face. If it is too small, the specific pressure will not be enough and the sealing effect cannot be achieved.

c. After the moving ring is installed, it should spring back automatically after pressing the moving ring to the spring.