Device for preparing flower soil from excess sludge and agricultural and forestry wastes

Abstract

The invention discloses a device for preparing flower soil from excess sludge and agricultural and forestry wastes, and belongs to the field of material resource recycling equipment. The device for preparing the flower soil from the excess sludge and the agricultural and forestry wastes comprises a stirring box; a rotating shaft A is rotationally connected into the stirring box, stirring blades are fixedly connected to the rotating shaft A, a fixing base is arranged on the top face of the rotating shaft A, a sludge hopper is fixedly connected to the right portion of the vertical face of the fixing base, and a smashing box is fixedly connected to the left portion of the vertical face of the fixing base; and the smashing box is internally rotationally connected with a rotating shaft B, a smashing cutter is fixedly connected to the middle of the rotating shaft B, and a feeding mechanism is arranged at the lower end of the rotating shaft B. According to the device, a second motor drives the rotating shaft B to smash the agricultural and forestry wastes in the smashing box, and when an upper end opening of a feeding barrel on the left side communicates with a discharging opening in the bottom of the smashing box, the smashed agricultural and forestry wastes fall into the stirring box through the feeding barrel. Compared with the prior art, the device can efficiently smash the agricultural and forestry wastes, so the stirring is more sufficient, and mixing and absorption are easier.

Description

technical field [0001] The invention relates to the field of material resource recovery and utilization equipment, more specifically, to a device for preparing flower soil by using surplus sludge and agricultural and forestry waste. Background technique [0002] Excess sludge refers to the activated sludge discharged out of the system from the secondary sedimentation tank (or sedimentation area) in the activated sludge system. Since the sludge contains a variety of nutrients needed by plants, such as N, P, K, etc., it can be used as fertilizer. Agricultural and forestry waste is an important member of waste, an important biomass resource, and an important renewable resource. The energy conversion and utilization of agricultural and forestry waste is one of the research hotspots in the field of renewable energy. Agricultural and forestry waste comes from plants. It is mainly composed of C, H, O, N, S and so on. In the prior art, flower soil is prepared by mixing surplus slu...

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Problems solved by technology

[0003] The prior art publication number is that the patent literature of CN212279191U provides a kind of device that utilizes excess sludge and agricultural and forestry wastes to prepare flower soil. Although the device has many beneficial effects, the following problems still exist: the crushing effect of the device on agricultural and forestry wastes Poor, which makes it difficult for the crushed agricultural and forestry waste to absorb nutrients when mixed with sludge, resulting in long composting time and low fertilizer efficiency; the existing device cannot control the mixing timing of agricultural and forestry waste and sludge, and cannot The nature changes the processing time of agricultural and forestry waste; the existing devices cannot adapt to the oxygen demand of different strains to use aerobic microorganisms or anaerobic microorganisms to promote fertilizer maturity

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