Analysis on the Root Causes of Sludge Run-out of the Screw-in Type Sludge Dewatering Machine
Stacked screw sludge dewatering machineIt is a new type of sludge dewatering process. It adopts the principle of combining dynamic ring and screw shaft. Driven by the screw shaft, the sludge is subjected to radial and axial squeezing forces in the dewatering body of the stacked screw. The water flows from the dynamic ring. The open space is filtered out, and the mud cake is continuously discharged from the mud outlet. However, due to the increase in the use of snail sludge dewatering machines, the operation site often shows mud running.
1. The flocculation effect of the sludge is not good before entering the main body of dewatering. The sludge can reach the desired flocculation state only after the appropriate polyacrylamide (PAM) ratio. It will be filtered out from the gap of the dynamic ring. Of course, some sludge is not simply added with PAM chemicals, and some sludges are of special nature and need to be added with PAC, caustic soda and other chemicals;
2. Another reason for the snail stacking machine to run mud is that the snail stacking dynamic ring space is too large. This is mainly because some manufacturers are not good enough in dynamic ring leveling. The leveling is over 10 threads, but it is to reduce the dynamic ring. And the wear of the screw shaft blades can only increase the thickness of the gasket, and the dynamic annulus becomes too large, and the sludge is filtered out. Therefore, in order to deal with the sludge running problem of the snail sludge dewatering machine, we should not only pay attention to the flocculation effect before the sludge enters the dewatering body, but also pay attention to whether the manufacturer is strict and cautious in the snail processing, and the supplier with excellent quality is There will be no similar phenomenon of running mud. Since the standard manufacturer's dynamic ring flatness is around 5-7 silks, do not underestimate the distance between these silks. It will affect not only the dehydration effect, but also the service life of the snail sludge dewatering machine. .
The sludge running of the screw sludge dewatering machine is a very serious problem, which will severely affect and pollute the environment, so the above is the whole content of the root cause analysis of the sludge running of the screw sludge dewatering machine. Thank you for your attention. If you have any questions, you can call for consultation, and we will answer you as soon as possible. After zui, we sincerely look forward to cooperating with you.
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