Flow rate progressively decreased multi-drum type material washing and separating method

Abstract

The invention discloses a multi-drum type material washing and separating device. Pipe bodies provided with lower water inlets in the sidewalls are arranged under the inverted-frustum-shaped bottom of a machine body, material sinking pipes, upper discharge valves and lower discharge valves are arranged under the corresponding pipe bodies, the upper discharge valves and the corresponding lower discharge valves are opened and closed alternately, and accordingly mixed materials with different proportions can be effectively washed and separated. The invention also discloses a multi-drum type material washing and separating method. The method that washing water is injected through upper water inlets and the lower water inlets simultaneously, and the upper discharge valves and the corresponding lower discharge valves are opened and closed alternately is adopted, the condition that different materials in the mixed materials have different proportions is utilized, and the up flow speed of the washing water injected into the lower water inlets is controlled, so that the different materials with the different proportions are effectively washed and separated. Furthermore, by progressively decreasing the up flow speed of the washing water injected into the lower water inlets, the progressive separation and progressively increasing deposition effect of the mixed materials is achieved. Meanwhile, the flow rate of water flow can be controlled more accurately through a flow rate control device and a flowmeter, and automatic material accumulating and discharging are achieved through automatic valves, so that production continuity is ensured.

Description

technical field [0001] The invention relates to a washing and separating device and a material washing and separating method, in particular to a drum type washing and separating device and a material washing and separating method. Background technique [0002] Paper mills that use waste paper as raw materials will produce 5-8% solid waste per ton of waste paper, the main components of which are waste plastics such as polypropylene and polyethylene films and wet-strength paper sheets. Both waste plastics and wet-strength paper are valuable resources that can be recycled. However, due to the large difference in their physical properties and their mixing together, they need to be fully separated before they can be classified and recycled. Therefore, washing and separation equipment is the key to a comprehensive recycling system. [0003] The existing washing and separation technologies all use sediment ditch or sediment tank as the washing and separating device. After the waste...

AI Technical Summary

Problems solved by technology

But there is a problem: the pieces of paper sinking at the bottom of the ditch need to be cleaned regularly, and the cleaning time is long, which seriously affects the continuity of production; in order to take into account the production capacity, production cycle and continuity of production, it is necessary to expand the sediment ditch. Length and depth, which will lead to a large footprint and space, which cannot meet the requirements of continuous and large-scale production

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