Mechanical seal installation and technical requirements

Mechanical seal is a perfection element, the manufacturing perfection of the outfit and installation perfection conditions are veritably strict, if indecorous assembly will affect the sealing performance. Correct installation must pay attention to the following points.

1, the reactor and the mechanical seal with the conditions of the part

⑴installation of mechanical seal corridor of the shaft manufacturing forbearance of h8, indicating that the roughness of1.6 um2 installation of mechanical seal corridor of the shaft or sleeve end should be made chamfering and form light, as shown in the figure.

Range mixing shaft axial runout lower than0.3 mm, axial swing lower than, Vd/ 100( d for shaft periphery) mm( measured in the mechanical seal corridor)

⑵The perpendicular angle between the shifting shaft and the flange of the kettle mouth isn’t further than0.5 mm, and the concentricity between the shifting shaft and the stop of the kettle mouth flange isn’t further than0.5 mm;

⑶ The service life of the mechanical seal is grounded on the premise that the outfit meets the below conditions, the working condition of the outfit meets the parameters of the mechanical seal and the routine conservation is correct.

2, kettle mechanical seal installation conditions

⑴ corridor within the emblematic delineation design conditions. 2 balanced mechanical seal dynamic ring seal and dynamic ring seal depression should be 3- 5 mm concurrence.

⑵ When installing the static ring, the end face needs to be corrected with a dry nanosecond table and insure that the end front and axis under the perpendicular allowed0.05 mm.

④ The contraction quantum of the spring is allowed ±0.2 mm error according to the delineation conditions.

⒊After installation, the positioning card nut will be loosened before driving.

⑴ After the installation of mechanical seal, there should be further than 24 hours of empty run together operation.

⑵ When there’s no dependable defensive measures, the mechanical seal for kettle is interdicted to be assembled on the reactor for transportation.