Ordinary sewage mixer is not adjustable speed. Because of the main parts of the mixer - cycloid reducer ratio is fixed, the output speed of the motor is fixed, mixer speed = speed output / gear ratio, so is unable to control. So before buying according to the mixing medium to determine the good output speed.
    If you need to use can speed mixer, must be in the purchase before that, there are two ways to achieve the following speed:

    1,with variable frequency motor speed control: the cycloid pin wheel reducer of the three-phase asynchronous motor, can change the frequency of inverter fed motor change. By reducing the frequency of the motor to reduce the output speed of the motor, so as to achieve variable speed. Speed range from the original speed - 1/10 between the original speed. Note: the use of variable frequency motor speed control also need to be equipped with frequency converter to achieve; ordinary motor can not be frequency conversion, the motor is prone to excessive heat and even burn.
    2,with CVT to speed: three-phase asynchronous motor, cycloidal reducer on modified cvt. By increasing the working radius of the planet friction wheel to reduce the output speed, the speed change is realized. The output speed of the stepless speed changer is 200-1000r/min, and then the output speed range of the mixer can be calculated according to the speed ratio of the speed reducer.
    Is useful to control the electromagnetic adjustable speed motor, variable frequency speed regulation is gradually being replaced.