Discussion on the adjustment method of the concentricity deviation of the valve seat of the mechanical stop valve
One, Introduction
As a type of mechanical valve stop valve, it is widely used in industrial pipelines. Its working principle is to control the flow or cutoff of the medium through the up and down movement of the valve rod. The normal operation of the stop valve cannot be separated from the concentricity of the valve seat and valve core. When the concentricity between the valve seat and the valve core deviates, it may lead to incomplete opening, poor sealing, or even inability to close, seriously affecting the working performance of the valve. Therefore, ensuring the concentricity of the valve seat and valve core is one of the important contents of valve maintenance and maintenance.
Two, Common causes of concentricity deviation between the valve seat and the valve core
During the installation process of the valve, due to improper operation or installation error, the concentricity between the valve seat and the valve core may also deviate.
During the use of the valve, due to the impact, vibration, corrosion of the medium and other reasons, the concentricity between the valve seat and the valve core may also change.
During the maintenance process of the valve, due to improper maintenance or not aligning the concentricity when replacing the valve seat and valve core, the concentricity between the valve seat and the valve core may also deviate.
Three, Adjustment methods for the concentricity deviation of the valve seat and valve core
Alignment before installation: Before the installation of the valve, it should be ensured that the valve seat and valve core are concentric. During installation, strict adherence to the installation specifications of the valve should be followed to avoid deviation in concentricity due to improper installation.
Alignment during use: During the use of the valve, the concentricity between the valve seat and the valve core should be checked regularly. If deviation is found, it should be corrected immediately.
Alignment after maintenance: During the valve maintenance process, we should strictly follow the maintenance specifications of the valve to ensure the concentricity of the valve seat and valve core. If deviation is found, it should be adjusted.
Use special tools for alignment: During the valve maintenance process, professional concentricity alignment tools can be used for alignment. For example, use a laser rangefinder to measure the deviation of the concentricity between the valve seat and the valve core, and then adjust the position of the valve seat or valve core to align the concentricity.
Four, Conclusion
The concentricity of the valve seat and valve core is one of the important factors affecting the performance of the stop valve. Ensuring the concentricity of the valve seat and valve core is of great significance for ensuring the normal operation of the valve. Therefore, we should strictly follow the specifications during the installation, use, and maintenance of valves to ensure the concentricity of the valve seat and valve core, thereby improving the working performance and service life of the valve.
It is necessary to note that the maintenance and maintenance of valves is a long-term task. We need to regularly inspect and maintain valves in our daily work, discover and solve problems in a timely manner, and thus extend the service life of valves.