Revolutionizing the Mechanical Treatment Industry: The Advantages of Frequency Conversion Speed Regulation Technology
As the mechanical treatment industry continues to evolve, the need for efficient and effective solutions becomes increasingly important. The application of frequency conversion speed regulation technology has shown significant promise in achieving this goal, as demonstrated in this blog post. In this article, we will delve into the benefits of speed regulation without steps, soft start, and constant torque, and discuss the advantages of frequency converters in the mechanical treatment industry.
The Selection of the Frequency Converter
The selection of a frequency converter is a crucial aspect in any mechanical treatment process. In selecting a suitable frequency converter, we must consider the specific requirements of the system, taking into account the characteristics of the equipment and the desired output. As an example, the Dongyuan Speecon-7200MA series of frequency converters has been used in a 18.5 kW / 15 kW inverter, which offered a frequency control range of 0.5 to 400 Hz and a speed control accuracy of 0.1%. This frequency converter also featured an automatic torque adjustment function and PWM flexible control, ensuring noise-free operation and a lower speed control of more than 10 steps.
System Start and Speed Regulation
In the main wheel engineer starting circuit of the external cylindrical crusher, the Star-Triangle Conversion Starter Circuit is commonly used. By replacing the original circuit with a frequency converter and controlling the inverter with a normally open contact of the original contactor, the starting torque of the grinding wheel engine can be adjusted between 50% and 80%. The system speed is adjusted by an external adjustable potentiometer, allowing for adaptive speed control depending on the different diameters of parts.
The Analysis of Load Characteristics
From the analysis of load characteristics, we can observe that the high-speed section has a high constant torque property, the low-speed section has a constant torque property, and the load requires a large low-speed torque and strong overload capacity. Therefore, a variable frequency conversion of constant voltage is used to regulate the speed to ensure that the motor operates within a specified range. This approach allows for a more efficient and energy-saving operation.
Design Considerations
When designing a system using frequency conversion speed regulation technology, several factors must be considered. For example, the accuracy of the balance of the grinding wheels must be improved, and the thermal dissipation conditions at low speed must be ensured. Additionally, the adjustment of inverter parameters is crucial to lock the functions such as frequency, maximum frequency, and dropout.
Loading Treatment of Cylindrical Shredders
In the treatment of cylindrical shredders, the grinding force depends on the output torque of the grinding wheel engine. The output speed of the grinding wheel remains unchanged, with the diameter of the part being low and the grinding supply being lower. Furthermore, the grinding speed may change during the treatment process, resulting in defects such as knife marks or burnt marks. Speed regulation without steps and constant torque of the variable frequency speed control engine can compensate for these defects.
Conclusions
The application of frequency conversion speed regulation technology in the mechanical treatment industry has led to significant improvements in efficiency, productivity, and product quality. The use of frequency converters has enabled the adjustment of grinding wheel speed to suit different parts, resulting in improved grinding forces and reduced defects. Additionally, the technology has shown potential for energy savings and reduced maintenance costs.
As the mechanical treatment industry continues to evolve, it is essential to stay ahead of the curve by embracing innovative solutions that drive efficiency, productivity, and quality. The use of frequency conversion speed regulation technology is a step in the right direction, offering a more efficient and cost-effective solution for the treatment of cylindrical shredders.
References:
- [1] Dongyuan Speecon-7200MA Series Frequency Converter.
- [2] Star-Triangle Conversion Starter Circuit.
- [3] External Adjustable Potentiometer.
