Device for preparing fertilizers by residual sludge and agricultural and forestry waste

Abstract

The invention discloses a device for preparing fertilizers by residual sludge and agricultural and forestry waste. The device comprises a supporting seat, four first supporting rods are equidistantlyarranged on the left side of the upper surface of the supporting seat, a control panel is arranged in the middle of the front side surface of one first supporting rod, a first switch, a second switchand a third switch are arranged on the side surface of the control panel, a mounting frame is arranged at the upper ends of the four first supporting rods, bearing blocks are arranged at four cornersof the upper surface of the mounting frame, inner rings of the two bearing blocks on the left side of the upper surface of the mounting frame are in sleeve connection with driving rollers, inner ringsof the two bearing blocks on the right side of the upper surface of the mounting frame are in sleeve connection with driven rollers, and the outer surfaces of the driving rollers and the driven rollers are in sleeve connection with conveying belts. According to the device for preparing the fertilizers by the residual sludge and the agricultural and forestry waste, the residual sludge can be heated and dried, the agricultural and forestry waste and the dried residual sludge are rapidly mixed, stirred and prepared into the fertilizers, and the fertilizers can be continuously produced and processed.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a device for preparing fertilizer by utilizing excess sludge and agricultural and forestry waste. Background technique [0002] Excess sludge is a by-product produced in the process of treating domestic sewage by activated sludge method. Its output is large, its moisture content is high, and resource utilization is difficult. Especially in recent years, the urbanization process has accelerated, and the per capita water consumption has increased. The substantial increase in the treatment rate of sewage has led to a rapid increase in the output of excess sludge in urban sewage treatment plants, and excess sludge has become an important source of municipal solid waste. Agricultural and forestry wastes are derived from plants, mainly composed of C, H, O, N, S, etc., and are the products of plant photosynthesis, mainly referring to the leftovers produced in the proces...

AI Technical Summary

Problems solved by technology

The existing equipment for preparing fertilizers from surplus sludge and agricultural and forestry wastes has a simple structure. In the process of preparing fertilizers from surplus sludge and agricultural and forestry wastes, most of the operators put the materials into the mixing tank for mixing and processing, which is low in efficiency and time-consuming. Laborious, unable to continuously produce and process fertilizers, not suitable for assembly line production

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