How to prolong the service life of electric pneumatic valve

Electric pneumatic valve is applied to a variety of industrial applications, mainly used for truncated or on line in the medium, can also be used on regulation and control of fluid, is one of the industrial automation process control pipe pressure components. Due to the particularity of electric pneumatic valve, in use process, line of electric actuators are more easily because of the environment and pneumatic valve pipe internal reason, make the motor or other parts damaged, which would influence the service life of electric pneumatic valve.


so, appropriate maintenance correctly, can effectively extend the service life of electric pneumatic valve, but also improves the work efficiency, reduce downtime, save the replacement cost.


electropneumatic valve maintenance and maintenance


1. Electropneumatic valve should save dry indoor ventilation, pathways, both ends must be blocked.








　　2. Long-term storage of electropneumatic valve should be check regularly, remove dirt, and rust-proof oil coating on the surface of the processing.







　　3. After installation, should be regular inspection on equipment.







　　4. The running electric pneumatic valve, pneumatic valve pieces should be complete, intact.







　　5. Flange and bolt on the stent cannot little, thread should be intact and are not allowed to have loose phenomenon.







　　6. Loose fastening nut on the wheel, such as found should be tight in time, in order to avoid wear joint or missing the handwheel and nameplate.







　　7. Wheel if you are lost, do not allow the use of a wrench, should be complete in a timely manner.







　　8. Packing gland are not allowed to skew or no preloaded gap.







　　9. For vulnerable to snow and rain, dust, sand and dirt from the environment of electric pneumatic valve, the pneumatic valve stem to install shield.







　　10. On the electric pneumatic valve rod should maintain complete, accurate and clear.







　　11. The seal of electric pneumatic valve, blocks, such as pneumatic accessories shall be complete in good condition. Heat preservation jacket should have no sag, crack.


in addition, electric pneumatic valve actuator has its special requirements, namely to be able to limit torque ( Axial force) And the rotation Angle. When the electric actuator specifications was determined, the control torque is determined. Generally run in a predetermined time, the motor will not overload. But as the following conditions may lead to overload: one is the low voltage power supply and can not get the required torque, the motor stop running; 2 it is wrong to set torque limit, make its torque is greater than the stop, cause continuously produce too large torque, the motor stop running; 3 it is intermittent use, the heat generated by the savings, more than the allowed temperature to rise of the motor; Four is a torque limit institutions circuit for some reason fails, the torque is too large; Five is the use of the environment temperature is too high, the relatively decreased motor heat capacity.

1, the environment temperature should be controlled in - 25℃- Within 70 ℃.

2, several circumstances should choose explosion-proof electric pneumatic valve, electric current is not stable, environmental corrosion, flammable and explosive occasions, special medium, long time no maintenance and so on.

3, because the mechanism is more complicated, when a failure is should not be removed, to prevent the accident.

4, under normal circumstances are not allowed to beat or electric pneumatic valve will items together.