Two-section drum screen for municipal domestic waste

Abstract

A two-sectional drum screen for municipal solid waste comprises a fixed rack (8), and a drum screen and a drum screen driving device (4) that are installed on the fixed rack (8). The drum screen comprises a drum screen entrance section (1) and a drum screen exit section (5) that are connected to each other. A feeding port (2) is installed at an entrance of the drum screen entrance section (1). A screen underflow collection device (7) is disposed below the drum screen. Several screen holes (101) are disposed on circumferential directions of the drum screen entrance section (1) and the drum screen exit section (5). Several bag breaking cutters (102) are installed on a circumferential inner wall of the drum screen entrance section (1), and cutter cleaning devices (103) fitting the bag breaking cutters (102) are disposed in the drum screen entrance section (1). A hole cleaning device (6) for cleaning the screen holes (101) is disposed on peripheries of the drum screen entrance section (1) and the drum screen exit section (5). Several strip object hanging devices (501) are installed on a circumferential inner wall of the drum screen exit section (5), and three rows of hanging needle chains (502, 503, 504) are installed in the drum screen exit section (5). Therefore, functions of screening, bag breaking, and strip object collection are effectively achieved, and a beneficial condition is created for classification and recycling of municipal solid waste.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of resources, in particular to a two-stage drum screen used for municipal solid waste. Background technique [0002] With the rapid development of the country's economy, the amount of municipal solid waste has increased dramatically. In 2010, the national municipal solid waste removal volume reached 150 million tons, and the landfill and storage of waste occupied more than 800,000 mu of land. Two-thirds of the large and medium-sized cities in the country were surrounded by waste, and one-fourth of the cities had no suitable facilities. It is difficult to select the location and construction of new garbage dumps. 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] Currently, landfill, incineration and composting are the main methods of waste disposal in my country. L...

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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