Crushing roller structure of filter cake dryer

Abstract

The invention discloses a crushing roller structure of a filter cake dryer. The crushing roller structure comprises paired crushing rollers, wherein the crushing rollers comprise roller bodies and gear hobbing belts, and the roller bodies are fixedly connected with rotating shafts. The gear hobbing belts are detachably and fixedly connected to the crushing rollers, the gear hobbings are uniformlydistributed on the gear hobbing belts, the gear hobbings are elastically connected to the gear hobbing belts, the linear speeds of the paired crushing rollers are different, and the gear hobbings of the paired crushing rollers are in contact with each other. According to the crushing roller structure of the filter cake dryer, by arranging the crushing roller structure in the dryer, a filter cake is crushed into granules and powder in a crushing mode, and then the filter cake is quickly heated and dried, the heating and drying efficiency are remarkably improved, the energy consumption of the dryer is reduced, and the shortcomings existed in an existing dryer are overcome.

Description

technical field [0001] The invention relates to the field of filter cake treatment and drying equipment produced by gelatin wastewater, in particular to a crushing roller structure of a filter cake dryer. Background technique [0002] In the production of gelatin, the generation of waste water mainly comes from the processes of degreasing, pickling, liming, neutralization, and glue making. When the waste water is purified, it will produce a large amount of sludge. Traditionally, the sewage generated by gelatin waste water The sludge treatment method is to send the sludge to a filter press for pressure filtration, and then obtain a filter cake with a water content of 18-27wt%, which is dried in the yard and then sent to the fertilizer plant. Because the filter cake contains a large amount of bone waste, organic matter and colloids, during the drying process of the storage yard, under the action of microorganisms, the filter cake is decomposed by microorganisms and releases fo...

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Problems solved by technology

For the first treatment method, since the filter cake is lumpy and has poor thermal conductivity, in order to make the water content of the filter cake below 5wt% (the filter cake with a water content below 5wt% has the best effect of preventing microbial decomposition, the filter cake should be can be stacked for a long time), in the drying process, the traditional propeller dryer and rake dryer consume a lot of energy and take a long time. For each ton of filter cake processed, the energy consumption reaches 60 degrees, and the time consumption reaches 1h. The cost is relatively high, and the filter cake is not completely dried, and the water content in the core of the filter cake is high. During the stacking process, the residual heat of the filter cake forces the water in the core of the filter cake to evaporate to form water vapor, which is not suitable for stacking in a closed storage area. Internal; for the second treatment method, the cost of raw materials used in the fertilizer plant becomes higher, the profit becomes lower, and the environmental protection pressure of the fertilizer plant increases, which is not conducive to the reuse of filter cakes

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