Two-stage segmentation type variable-frequency sieving device for domestic wastes and sieving method

Abstract

A two-stage segmented frequency conversion screening device for domestic waste, the structure is: the undersize outlet of the first-stage trommel screen corresponds to the feed end of the conveyor, and the discharge end of the feeder is placed on the gravity-resistance Above the sorting conveyor, the upper end of the gravity-resistance sorting conveyor corresponds to the feed inlet of the secondary drum screen, and the lower end of the gravity-resistance sorting conveyor corresponds to the feed inlet of the coarse material collection box, Gravity‑resistance sorting conveyors have an angle of 35‑45° between the conveyor belt and the ground plane. The invention also discloses a method for screening domestic garbage by using the device.

Description

technical field [0001] The invention belongs to the field of solid waste recycling, in particular to a two-stage segmented frequency conversion screening device for domestic waste. [0002] The present invention also relates to a method for screening domestic garbage by using the above-mentioned two-stage segmented frequency conversion screening device. Background technique [0003] In recent years, with the rapid development of urbanization, the annual output of domestic waste in my country is close to 150 million tons, and more than 65% of cities in China have fallen into the predicament of domestic waste siege. Due to the high moisture content and complex composition of domestic waste in my country , There is a large difference in particle size, and it often contains coarse garbage and non-compostable substances. Traditional garbage sorting mainly relies on garbage source sorting and manual sorting. This method relies on the improvement of social environmental protection ...

AI Technical Summary

Problems solved by technology

Existing screening equipment often has the problem that the screening efficiency and screening speed cannot be balanced. If the aperture and inclination angle of the trommel screen are increased, the screening speed will be significantly improved, but the screening effect is not obvious, and there will still be a lot of difficult to obtain under the screen. Degradation of heavy substances with large particle size exists; if the aperture and inclination angle of the trommel screen are reduced, the screening speed will drop significantly, which will affect the overall domestic waste treatment capacity, and then affect the economic benefits of the treatment plant

Images