Two-section drum screen for municipal domestic waste

Abstract

The invention discloses a two-section drum screen for municipal domestic waste. The two-section drum screen comprises a fixed stand, and a drum screen and a drum screen driving device which are arranged on the fixed stand, wherein the drum screen comprises a drum screen inlet section and a drum screen outlet section which are connected with each other; a feed port is formed at an inlet of the drum screen inlet section; an undersize collection device is arrange below the drum screen; a plurality of screen holes are formed in circumferential directions of the drum screen inlet section and the drum screen outlet section; a plurality of bag breaking knives are arranged on the circumferential inner wall of the drum screen inlet section; knife cleaning devices which are matched with the bag breaking knives are arranged in the drum screen inlet section; the peripheries of the drum screen inlet section and the drum screen outlet section are provided with hole cleaning devices for cleaning the screen holes; a plurality of strip-shaped object hanging devices are arranged on the circumferential inner wall of the drum screen outlet section; and three rows of hanging needle chains are arranged in the drum screen outlet section. According to the two-section drum screen, the functions of screening, bag breaking and strip-shaped object collection can be effectively achieved, and beneficial conditions are created for classification and recycling of the municipal domestic waste.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of resources, in particular to a two-stage trommel screen used for municipal solid waste. Background technique [0002] With the rapid development of the national economy, the amount of municipal solid waste generated has grown rapidly. In 2010, 150 million tons of municipal solid waste was removed and transported nationwide, and more than 800,000 mu of land was occupied for landfilling and stacking. The site selection and construction of new garbage dumps are facing difficulties. It is estimated that by 2020, the national municipal solid waste removal volume will reach 250 million tons, and the problem of waste disposal is imminent. [0003] At present, my country's garbage disposal mainly adopts landfill, incineration and composting. Landfills are prone to producing CH-rich 4 The landfill gas will cause an explosion, and will also produce a large amount of landfill leachate...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the problem that the existing trommel screen can only perform the screening function, and provides a two-stage multifunctional trommel screen with a novel structure and high processing efficiency, which realizes screening, bag breaking, and elongated objects And functions such as collecting long strips

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