Les in the previous article once said, "how to choose suitable agitator"; in that article les mainly from the quality of the product, service and brand the three aspects to tell the story of today's talk is les Three optional elements related to technical parameters. First, the mixing motor and speed control mode At present, the mixers on the market can be roughly divided into three categories. The performance, price and safety of the three types are very different. The specific comparison is shown in the following table: name Frequency mixing Constant speed stirring Electric stirring Motor type Three-phase AC induction motor Single-phase AC induction motor DC motor or series motor Speed ​​principle AC frequency control Speed ​​feedback AC voltage regulation Speed ​​feedback AC voltage regulation performance The speed is affected by the load, the motor efficiency is high, the temperature rise is low, and the service life is long, which is suitable for high power. The speed is almost unaffected by the load, the motor efficiency is low, the temperature rise is slightly higher, and the life is long, which is only suitable for low power. The speed is greatly affected by the negative belt, not constant, the motor efficiency is medium, and the life is limited by the brush. Durability it is good it is good Poor safety Ok, no sparks Ok, no sparks Poor, there are sparks price high in low Second, power, speed and torque Third, the stir bar The length of the stir bar should be as short as possible, and the container mouth should be supported, which can reduce the stirring jitter. Users can focus on these three aspects when purchasing a suitable blender.
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ikaRW20 digital display mixer
The power, speed and torque of the agitator have the following relationships:
The rated torque of the motor is proportional to the motor power and inversely proportional to the rated speed. The user who is most concerned about the mixer should be “selecting more power and suitableâ€. Because the mixing force requirements are different, the container, the agitation, the viscosity, the ambient temperature, etc. are different, so it is more difficult to choose. Generally speaking, the power selection is a little wider to adapt to a wider range. However, the power is not enough, and finally the temperature rise of the motor (â–³T≤45°C normal).
In addition, since all electronic speed regulation is usually constant torque speed regulation, power loss is high at low speeds, so it is usually necessary to use an overhead mechanical agitator when agitating high viscosity materials . Example: ika  RW20 digital display mixer .
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