When the speed of large stacked screw sludge dehydrator becomes slow, the following three points should be done:

1. Adjust the wheel of the belt, tighten the belt, and then tighten the set screw.

2. Increase the power of the dryer. The sludge dewatering equipment commonly used in the stacked screw type sludge dewatering machine are: Belt Thickening and dewatering integrated machine, belt vacuum filter, stacked screw type sludge filter press, drum type thickening and dewatering integrated machine, plate and frame filter press, belt filter press, etc.

3. Keep the motor dry.

At present, some advanced large-scale stacked screw sludge dehydrators abroad have actually become a high-tech comprehensive technology product.

Selection of driving motor

The common motors are DC motor and AC motor. The characteristics of DC motor and AC motor are as follows.

1) Characteristics of DC motor. Complex structure, high cost, need regular maintenance (Replacement Brush), because there are sparks in the brush, generally can not be used in the occasion of explosion-proof requirements. But the speed control circuit of DC motor is simple, the cost is low, and the speed control performance is superior. At present, the performance of Brushless DC motor has been mature, and brushless DC motor has been widely used to replace ordinary DC motor in small power DC motor.

2) Characteristics of AC variable frequency motor. The structure is simple, the cost is low, the work is reliable, the noise is low. In order to obtain the control performance, the frequency conversion speed regulation must be used. The speed regulation controller is complex and the cost is high. Since the large-scale stacked screw sludge dewatering machine can be equipped with rotors of different speeds, the design of variable-frequency motor driving the large-scale stacked screw sludge dewatering machine should consider the rotor with low speed and large capacity to make the motor work in the constant torque working area, and the rotor with small capacity and high speed can be designed in the constant power working area of variable-frequency motor, so as to reduce the design power of variable-frequency motor, Cost savings.