Pneumatic cylinder seal 2020 - ball valve replacement
01 -
01 wang wh (
Zenith steel thermal power plant)
Fixed ball valve is made up of a sphere is equipped with pneumatic actuators, replace manual of new products, pneumatic ball valve actuators work can drive the valve rapid opening and closing, the effect of cutting speed can reach seconds.
Mainly divided into pneumatic ball valve, the external regulation of single and double action of three, in the pneumatic head equipped with accessories such as: sanlian pieces, locator, limit switch, etc. , can be used as a throttling flow.
Added with a control box at the same time, he can control indoor switch in the remote control.
Pneumatic ball valve ball is by cock shift, it's at its 90 & deg;
Action sphere body centerline as rotate to open, has a circular hole or channel through its axis.
When rotate to its 90 & deg;
When the valve is in closed state, when the actuators work, just a small rotational torque to the valve shut tightly, which can achieve fast truncation to cut off the principle.
Pneumatic ball valve with application in fast cutting, distribution, and change the flow of the medium pipeline.
Pneumatic ball valve opening and closing it quickly, suitable for the size of the diameter.
Our thermal power plant chemical water workshop sand filtration and activated carbon filter used pneumatic ball valve, the long time running, the seal will be aging and wear and tear, will result in the phenomenon such as cylinder gas leakage, pneumatic valve action is not normal.
Following a brief introduction of how to change the cylinder seals: 1, close the defective pneumatic valve, compressed air valve demolition of solenoid valve to cylinder compressed air connecting pipe.
Loosen the tightening bolts, cylinder with purple copper bar struck pneumatic cylinder end cover of the head gently, remove the cylinder end cover (
There a ring)
。
2, using hand lever pneumatic rotating on the other side of the manual operating lever, slowly open the pneumatic valve and the cylinder piston to one end of the cylinder block, gently struck cylinder barrel (
Prevent deformation of cylinder struck)
Remove the cylinder.
3, check whether the cylinder cylinder corrosion respectively, if you don't serious corrosion to determine cylinder, using metallographic sandpaper, rusty spot, cylinder cylinder apply anti-rust oil after grinding smooth, if the corrosion is serious, you must change the cylinder barrel.
Check each part of the sealing ring, replace aging and wear of sealing ring.
After sealing ring mount components, surface coating vaseline and smooth, easy to install.
4, check if the piston rod wear and corrosion, if not serious corrosion and abrasion, using the rusty spot on the metallographic sandpaper, piston rod, apply anti-rust oil after grinding smooth, if the corrosion is serious, you must change the piston rod.
Check cyclotron institutions, whether to have wear, whether good lubrication (
Add grease)
。
5, after loading, the vent on the body of vent in the cylinder block, loaded on the pneumatic head body, then the installation step by step cylinder, cylinder end cover, tighten bolts fastening cylinder, fitted with electromagnetic valve to cylinder compressed air tube.
In the end, turn the manual operating lever, slowly close the pneumatic valve and the cylinder piston back to the cylinder end cover at one end.
Repair end, open the total compressed air valve, pneumatic valve switch experiment, flexible switch, no jamming not leak air cylinder.
Recovery system.
