A mixer is a machine with a shaft with blades rotating in a cylinder or groove to stir and mix a variety of raw materials into a mixture or suitable consistency. Mixer is divided into many kinds, there are forced mixer, single horizontal shaft mixer, double horizontal shaft mixer and so on. The stone mixer uses the rapid rotation of the screw to lift the raw materials from the bottom of the barrel from the center to the top, and then flies in the shape of an umbrella, and returns to the bottom, so that the raw materials roll and stir up and down in the barrel, and a large number of raw materials can be evenly mixed in a short time. With automatic running timing, overload protection, feeding limit alarm and other functions; It has the advantages of small footprint, large capacity, low power consumption, labor saving, easy control, fast and uniform mixing, etc.

Equipment workflow:

1.Start the frequency converter of the main mixing tank, and then the stone powder raw material is transferred to the main mixing tank through the conveyor belt, according to the command issued by the PLC control system, the converter runs at different speeds. On the premise that the inverter does not stop, add resin pigments to the main mixing tank, and stop after running for about 30 minutes.

2.At the same time as the main mixing tank is working, the secondary mixing tank is also doing the same work, but the amount of mixing materials is smaller. After the main mixing tank is shut down, the stirred material in the secondary mixing tank is poured into the main mixing tank. During the pouring process, the host inverter runs at 10Hz. After the pouring, the main tank is covered and pumped into a vacuum. The air pumping process lasts for 15 minutes.

3.The stirred stone is fed into the hydraulic forming equipment, which is naturally hardened after forming.

4.The hardened product is sent to the marble row saw cutting equipment and cut into different thicknesses according to different designs.

5.The cut material is polished and trimmed to obtain the finished tile.

FD500 series low voltage frequency inverter parameters:

Frequency inverter operating status: 

After the completion of the primary feeding (about 6.8 tons), the working current of the frequency inverter is basically controlled at about 200A. When the secondary feeding process is activated, the peak current of the acceleration process of the frequency inverter is 510A, about 120% of the rated current of the inverter. After the secondary feeding is completed (about 10 tons), the acceleration process current is controlled at 510A, and the acceleration process current is controlled at 510A. The operating current is in the range of 330~350A.

Advantages of FGI FD500 series low voltage frequency inverter: 

Mixers are widely used in industrial environments, and general inverters can be completed. There are also many applications in stone mixing equipment, frequency converter in the equipment technology application is quite mature, however, to let the mixing equipment stop during operation, and then start again, it is not the work that ordinary frequency converter can complete, because the mixing FD500 frequency converter, using excellent internal algorithm, while cooperating with the main control TI high-speed chip, It can quickly capture the current change in the operation process, and quickly calculate the control curve suitable for the load, while ensuring the operation of the equipment, it can also control the appropriate working current, and meet the field process needs.

The use of FGI FD500 series low voltage frequency inverter can well complete the process requirements of ceramic tile stone mixing equipment.