In the process of sludge dewatering, the screw sludge dehydrator is widely used due to its high efficiency, energy saving, and resistance to clogging. However, occasional blockages may occur during the use of the equipment, which not only affects processing efficiency but may also lead to equipment damage. The following are some reasons analysis and solutions for the blockage problem of the screw sludge dehydrator:

Quality issue: The level of craftsmanship during equipment manufacturing directly affects its ability to resist blockages. If the flatness of the spiral shaft and ring is not sufficient, or thinner materials are used, it may cause mud blockage during the use of the equipment.

Sludge properties: The type of sludge (organic or inorganic) and its particle size, solid content, and other characteristics can affect its dewatering performance. Inorganic sludge particles are coarse and heavy, and if the equipment speed is low, it may cause the sludge cake to be very dry before discharge, leading to blockage.

Improper operation: If the amount of sludge entering the equipment exceeds its processing capacity, or if the equipment is not properly cleaned and emptied before and after use, it may cause blockage.

To address the above issues, the following measures can be taken to solve the blockage problem of the screw sludge dehydrator:

Idle and cleaning: Allow the equipment to idle for about 10 minutes before use and use a spray device; After use, turn off the feed and let the equipment continue to idle for about 30 minutes to drain any remaining sludge inside, and clean the spiral blades with clean water.

Reverse operation: If there is a slight blockage, you can try reversing the equipment or increasing the frequency of spray flushing to solve the blockage problem.

Maintenance and cleaning: For severe blockages, the equipment should be immediately stopped and thoroughly inspected and cleaned. When necessary, it may be necessary to remove the spiral shaft for cleaning.

Optimization operation: Reasonably control the amount of sludge entering, avoid overloading operation, and adjust the proportion and type of flocculant added according to the properties of the sludge to improve the flocculation effect of the sludge.

Regular maintenance: Regularly inspect and maintain equipment, including lubrication maintenance, cleaning work, and inspection of electrical systems, to ensure the normal operation of the equipment.

Pre treatment: For sludge with high levels of sand, oil, or other impurities, a filtration device can be added at the inlet to prevent these impurities from entering the equipment and causing blockages.

Through the above measures, the clogging problem of the screw sludge dehydrator can be effectively reduced, and the efficiency of sludge dewatering and the service life of the equipment can be improved.

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