Food waste four-stage sorting and impurity removal system

Abstract

The invention provides a four-level sorting and impurity-removing system for kitchen wastes. The system comprises a bulky object sorting system, a breaking, humidifying and pulping system, a light foreign matter sorting system and a fine sand sorting system which are successively arranged according to the flowing direction of kitchen waste sorting, wherein the bulky object sorting system comprises a bulky object sorting machine. The bulky object sorting machine comprises a frame, a plurality of rotating shafts mounted on the frame, and a driving mechanism, wherein several triangular disc groups which are uniformly spaced by a plurality of cushion blocks sleeve each of the rotating shafts, an interval space is formed between two adjacent triangular disc groups by virtue of each of the cushion blocks, and the triangular disc groups on the adjacent rotating shafts are arranged in a staggered manner, so that the triangular disc groups on each of the rotating shafts can be embedded into the interval space close to each of the rotating shaft, respectively, and gaps are reserved; and each of the triangular disc groups comprises at least one regular triangular disc, each edge of which is arranged as an arc-shaped edge which is convex outward. The four-level sorting system provided by the invention can be used for efficiently sorting different foreign matters of the kitchen wastes, and the sorting effect is remarkably enhanced.

Description

technical field [0001] The invention relates to the technical field of food waste pretreatment, in particular to a four-stage separation and removal system for food waste. Background technique [0002] Food waste generally refers to the waste left over from the processing of food in the kitchen. During the formation of food waste, many foreign substances that are not suitable for anaerobic fermentation are usually mixed. For example, light foreign objects such as disposable lunch boxes, foam, plastic bags, and plastic bottles, and heavy foreign objects such as metals (knives, spoons), bones, ceramics, bamboo wood, and glass bottles. If these foreign substances are not effectively removed, they will damage the conveying equipment during the conveying process, hinder the normal operation of conveying, and even have a great impact on the anaerobic fermentation stage of organic matter in food waste, not only to The damage of the treatment equipment will greatly reduce the trea...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a four-stage separation and removal system for food waste. By improving the coarse object sorting system, the multi-angle disc group in the coarse object sorter is improved into a triangular disc group with certain special features. It solves the problem that the coarse foreign matter in the food waste is not easy to be moved when the rotating shaft rotates, and the falling speed of the food waste slurry and small solid waste is slow, so as to realize the rapid separation of the large foreign matter

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