Mechanical seal installation steps

The mechanical seal is mainly an accessory designed to provide a sealed environment, which effectively provides a sealed environment. Many devices have high requirements for sealing performance. When installing, you should also pay attention to the method so that the device can have a good sealing effect. The installation steps of the mechanical seal are as follows:

1. Check whether the model and specification of the mechanical seal to be installed are correct.

2. Check whether the dimensional accuracy, geometric accuracy and mutual relationship between the host and the installation of the mechanical seal meet the technical requirements. There are mainly the following aspects:

(1) The radial runout tolerance of the shaft (or shaft sleeve) where the mechanical seal is installed, the surface finish of the shaft (or shaft sleeve) and the dimensional tolerance of the outer diameter.

(2) The verticality tolerance of the sealing chamber and the gland combined with the positioning end facing the center line of the shaft (or shaft sleeve).

(3) The end of the shaft (or shaft sleeve) where the moving ring seal is installed, and the chamfering and smoothness of the end structure of the housing hole where the mechanical seal is installed.

(4) The axial displacement of the rotating shaft of the mechanical seal when it is working.

3. During the installation of the mechanical seal, it should be kept clean, and it is not allowed to hit the sealing element with tools to prevent damage and damage.

4. During installation, the surfaces of the dynamic and static rings should be coated with a layer of clean engine oil and turbine oil. A layer of clean engine oil or turbine oil should also be applied before the auxiliary sealing ring (including the dynamic ring sealing ring and the static ring sealing ring) is installed to ensure smooth installation.

5. Put the static ring sealing ring on the back of the static ring and put it into the sealing end cover. Be careful not to damage the end face of the static ring. Make sure that the end face of the static ring is perpendicular to the center line of the end cover, and pay attention to the anti-rotation groove on the back of the static ring. Align the anti-rotation pins, but do not touch.

6. The rotating part of the mechanical seal is fixed with the shaft by two fixing screws on the spring seat. When tightening the fixing screws, the working length of the spring must be guaranteed.

When installing mechanical seals, you should read the manual carefully. There may be differences in the installation methods of different types and types of seals. Here you need to pay attention.