Automatic sludge filter press is a new type developed by LDHB on the basis of introducing advanced filter press technology in the world. It is a filter press which can remove moisture from slurry by winding two filter belts on a series of rollers of different sizes and in order. It has continuous operation by utilizing extrusion and shearing between filter belts. It has the advantages of high automation, energy saving and easy maintenance. It is a kind of equipment for sludge dewatering and reduction treatment.
ⅰDense dehydration: chemical pretreatment stage
Automatic filter press requires high flocculation effect. This machine adopts a unique mixer to achieve rapid flocculation and achieve the best flocculation effect.
ⅱ Gravity dewatering: gravity concentration dewatering stage
Sludge is evenly fed into the mesh belt through the hopper. Sludge moves forward with the filter belt. Free water flows into the receiving tank through the filter belt under the action of self-weight. Its main function is to remove free water from the sludge and reduce the fluidity of the sludge, so as to prepare for further extrusion.
ⅲ Low/Medium Pressure Dehydration: Wedge Pressure Dehydration Stage
After gravity dewatering, it is still difficult to meet the requirement of sludge fluidity in pressing dewatering section. After this stage, the slight extrusion dewatering ensures the smooth press dewatering of sludge.
ⅳ High-pressure dehydration: squeezing dehydration stage
The upper and lower filter belts are used to clamp the filter cake around the press roll for repeated extrusion and shearing, and a large amount of capillary water is removed, so that the moisture of the filter cake decreases gradually.
1.The main engine is welded by the national standard square pipe. The surface is sandblasted with high pressure to remove rust and oxide scales, and sprayed with four layers of fluorocarbon paint. The corrosion resistance of the main engine is more than ten years.
2.The key parts are made of high performance stainless steel, including main dewatering roll, mudguard, cistern, waterproof cover, nozzle, etc.
3.Bearing base is made of high-salary cast iron with fully sealed structure. The bearings are excellent double row roller bearings, which are guaranteed for three years.
4.Extrusion rollers, transmission rollers and guide rollers are high-quality seamless steel pipe with wear-resistant rubber, which is guaranteed for three years.
5.High-quality filters with high strength, good permeability, non-blocking, easy cleaning and easy disassembly are adopted. Different filters are selected according to the physical characteristics of sludge.