The electric actuator of the electric butterfly valve is getting hot. How can this be solved?

Butterfly valves are widely used in the chemical and other industries. During use, if problems occur due to improper operation by the operator or improper use of the butterfly valve, it will lead to the valve malfunctioning. Electric Butterfly Valve Overheating of the electric actuator is a common problem. Many customers have encountered motor overheating issues. If the solution is appropriate, we can complete it in minutes; however, if the method is inappropriate, it will directly damage the motor and affect the normal operation of the entire valve. Generally speaking, it's normal for the electric motor to generate some heat during normal operation, especially during frequent switching; therefore, slight heating of the motor is not a problem. However, if the temperature of the motor rises significantly and does not decrease after the valve is closed, this indicates a problem. How to solve it?

1, Electric Butterfly Valve The significant temperature increase is because the motor has been running for a long time and cannot dissipate heat effectively. Therefore, when we find that the motor temperature is too high, we must first use an electric pen to test whether the motor has current. If there is current, it means that the motor is running, which is the reason why the motor is getting hot.

2, Carefully analyze the reasons why the motor cannot stop working. Electric butterfly valves usually have both mechanical and electronic limits. Normally, the electronic limit switch will lock the main position first. The mechanical limit plays a supporting role.

3, Determine if there are other debris in the pipeline, whether the butterfly valve is not a full-cycle sealed structure, and whether the valve plate is still in the pipeline when the valve is fully opened. If there are weeds, sticks, etc., clogging the valve plate in the medium. If the valve cannot be moved to the fully open position, the electronic limit switch will not be able to stop the motor, which will cause the motor to overheat.

4, If it is determined that there is no impurity in the medium, it may be caused by a mismatch between the mechanical limit and the electronic limit. Usually, after the motor stops working under the interference of the electronic limit, there is still a certain distance between the mechanical limit. If the electronic limit fails, the valve will be stuck in the mechanical limit, which will also cause the motor to continue working, causing overheating. At this time, it is necessary to open the cover to check whether the block of the microswitch responsible for the electronic limit has slipped out or deviated from the original debugging position. Adjusting it to the normal position can solve the problem.

5, The torque of the electric actuator is too small, causing the motor to overload. This requires a larger torque motor to solve this problem. The above are Electric Butterfly Valve Cause analysis of electric actuator overheating phenomenon.