Introduction to Electric Actuators

Introduction to Electric Actuators

Electric actuators (also known as electric linear actuators or electric thrusters) are devices used in TMR mixers (Total Mixed Ration Mixers) to control discharge doors or other movable components. Driven by electric motors, electric actuators can precisely control the extension and retraction of the rod, enabling automated operation. Depending on design and functional requirements, electric actuators in TMR mixers can be categorized into the following types:

1. Classification by Load Capacity

• Light-Duty Electric Actuators:
  • Lower load capacity, typically used for small TMR mixers or light-duty applications.
  • Suitable for controlling small discharge doors or lightweight components.
• Medium-Duty Electric Actuators:
  • Moderate load capacity, ideal for medium-sized TMR mixers.
  • Capable of handling medium-weight discharge doors or mixer components.
• Heavy-Duty Electric Actuators:
  • High load capacity, suitable for large TMR mixers or heavy-duty applications.
  • Can reliably control large discharge doors or heavy mixer components.

2. Classification by Stroke Length

• Short-Stroke Electric Actuators:
  • Shorter stroke length, typically used for controlling small discharge doors or components requiring short-distance movement.
• Long-Stroke Electric Actuators:
  • Longer stroke length, suitable for applications requiring a larger range of motion, such as large discharge doors or internal adjustment mechanisms in mixers.

3. Classification by Control Method

• Standard Electric Actuators:
  • Basic electric actuators with simple extension and retraction functions, suitable for basic discharge door control.
• Smart Electric Actuators:
  • Equipped with sensors or control systems, enabling precise position control and automated operation.
  • Some smart actuators support remote control or integration with the central control system of TMR mixers.

4. Classification by Protection Rating

• Standard Protection Electric Actuators:
  • Suitable for dry and clean environments with lower protection ratings.
• High Protection Electric Actuators:
  • Feature waterproof, dustproof, and corrosion-resistant capabilities, ideal for wet, dusty, or corrosive environments.
  • Commonly used in TMR mixers, which frequently come into contact with feed and moisture.

5. Classification by Mounting Style

• Linear Electric Actuators:
  • Directly mounted on the discharge door or components of the mixer, suitable for simple linear motion control.
• Angular Electric Actuators:
  • Achieve motion through specific mounting angles, suitable for applications requiring special angular control.

6. Classification by Drive Type

• DC Motor Electric Actuators:
  • Driven by DC motors, suitable for low-power, low-load applications.
• AC Motor Electric Actuators:
  • Driven by AC motors, suitable for high-power, high-load applications.

Considerations for Selecting Electric Actuators

1. Load Capacity: Choose an actuator based on the weight of the TMR mixer’s discharge door or the load requirements of other components.
2. Stroke Length: Select an actuator with an appropriate stroke length based on the required range of motion.
3. Protection Rating: Choose waterproof, dustproof, and corrosion-resistant actuators based on the working environment.
4. Control Method: Select standard or smart actuators based on automation needs.
5. Mounting Style: Choose the appropriate mounting style (linear or angular) based on the equipment structure.
6. Brand and Quality: Opt for reliable brands to ensure durability and stability of the actuators.

Conclusion

Electric actuators for TMR mixers come in various types, primarily classified by load capacity, stroke length, control method, protection rating, and mounting style. Selecting the right electric actuator can enhance the automation level and operational efficiency of TMR mixers while extending the equipment’s service life.