Sludge pretreatment device

Abstract

The invention discloses a sludge pretreatment device which comprises a support plate, a support, a discharge nozzle, a loading bin, a motor, an impeller, a keep-off nozzle, a lower grid, guide rods, an upper grid, a swinging mechanism, a connecting plate, a spacing plate and a steel ball. The swinging mechanism further comprises a bracket, a power mechanism, rotating shafts, cams, sliding plates, guide wheels and a reset mechanism; the reset mechanism further comprises a push top, a spacing rod, and a spring. The sludge pretreatment device is simple in structure, sludge is continuously pressed into the upper grid through the impeller, the swinging mechanism pushes the upper grid to move reciprocatingly, the sludge is crushed horizontally and longitudinally under the common action of the upper grid and the lower grid, the sludge can be sliced evenly, continuously and rapidly, the sludge is allowed to fall into the discharge nozzle rapidly through continuous conveying of the impeller, and high efficiency is achieved.

Description

technical field [0001] The invention relates to a mechanical device, in particular to a sludge pretreatment device. Background technique [0002] In the existing sludge treatment technologies of urban sewage treatment plants, most of them use pressure filtration or natural drying, and the water content is very high. The treated sludge can only be temporarily solidified, and as landfill treatment, it can only be a temporary treatment plan. Can not meet the increasingly stringent environmental requirements. Therefore, sludge drying technology has emerged, that is, through heating and drying, the water content of sludge is lower than 10%, and then recycled. The sludge drying process mainly includes sludge collection, continuous feeding, drying, dehydration and For comprehensive utilization, when feeding continuously, because the sludge may contain agglomerated large pieces of sludge, if it is directly dried, it will often not be completely dried and dehydrated, which will affe...

AI Technical Summary

Problems solved by technology

[0002] In the existing sludge treatment technologies of urban sewage treatment plants, most of them use pressure filtration or natural drying, and the water content is very high. The treated sludge can only be temporarily solidified, and as landfill treatment, it can only be a temporary treatment plan. Unable to meet increasingly stringent environmental requirements

Therefore, sludge drying technology has emerged, that is, through heating and drying, the water content of sludge is lower than 10%, and then recycled. The sludge drying process mainly includes sludge collection, continuous feeding, drying, dehydration and For comprehensive utilization, when feeding continuously, because the sludge may contain agglomerated large pieces of sludge, if it is directly dried, it will often not be completely dried and dehydrated, which will affect the final dehydration rate. At the same time, because the sludge has Certain viscosity, slow feeding speed, low production efficiency

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