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What should I pay attention to before and after mechanical seal installation
Sep 15, 2018

What should I pay attention to before and after mechanical seal installation?

Mechanical seal is a mechanical equipment component that requires extremely high precision. The service performance and service life of Tianjin mechanical seal have a great relationship with the operating conditions, accuracy and sealing installation of the main engine. Therefore, before the mechanical seal is installed and during the installation process, it is necessary to carry out the installation as required, otherwise it will easily affect the production efficiency and form a loss.

Before installation, the appropriate type of mechanical seal and data combination should be correctly selected according to the working conditions and the host condition. When the mechanical seal pump or other similar rotating machinery is installed, the axial axial movement amount of the rotor is ≤0.3mm. It is necessary to have a chamfer of 3×10° at the step of the shaft (or bushing) where the mechanical seal is installed, and the oil-slip transition has a roughness Ra≤1.6. The outer surface roughness Ra of the shaft (or bushing) on which the mechanical seal is installed is Ra ≤ 1.6, the jerk is ≤ 0.04 mm, and the standard civil service is h6. The surface roughness of the sealed end cover of the mechanical seal static ring and the touch part of the auxiliary sealing ring is Ra≤1.6, the standard civil service is H8, and the perpendicularity of the positioning end face to the axis is ≤0.04mm.

After the sealing installation is completed, it is necessary to exhaust the air in the sealing chamber, especially the double-end seal with sealing liquid, and pay more attention to exhausting air. When restarting the vehicle, the suction valve should be opened first, and then the motor should be turned on after the medium enters the sealed chamber. For those media with crystallization, when restarting the drive, the crystals on the structural parts such as the sealing surface and the spring are washed with the washing liquid before driving. Before starting the device, check that the resistance of the shaft is normal and uniform, and no jamming is allowed. Before the equipment is operated, it is necessary for the sealed chamber to be filled with the medium, and it is excellent in smoothness, and it is strictly prohibited to cause conflicts, resulting in failure of the seal.

Jiaxing Burgmann Mechanical Seal Co., Ltd

Contact: Doris Sun

TEL: +86-573-84133388

Fax: +86-573-84133388

E-mail: doris@mechanicalseal.com.cn

            susie@jxburgmann.com

Address: No. 1168 Jinyang Road, Luoxing Street, Jiashan County, Jiaxing, Zhejiang, China



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