Construction waste screening equipment and screening method

Abstract

The invention relates to the field of building rubbish recycling, in particular to building rubbish screening equipment and screening method. The building rubbish screening equipment comprises a sorting chamber, a throwing device, a wind power device and a medium-heavy object sorting device, and a first separation region and a second separation region are arranged in the sorting chamber; the throwing device conveys material to the first separation region; the wind power device uses the wind power to lift the material thrown from the first separation region; the medium-heavy object sorting device comprises a double-layer sorting barrel, a negative pressure mechanism, a fan and a barrel body drive mechanism. The building rubbish screening equipment can separate the building rubbish into heavy substance, medium-heavy substance and light substance according to the need, and the screening effect is good; the heavy material does not collide with the double-layer sorting barrel in the screening process, and the service life of the double-layer sorting barrel is prolonged; the material throwing angle and power of the throwing device can be regulated according to the need in the screening process, and the adaptive capacity of the equipment is greatly improved; the building rubbish screening equipment is capable of effectively lowering the equipment load and improving the winnowing efficiency.

Description

technical field [0001] The invention relates to the field of construction waste recycling, in particular to construction waste screening equipment and a screening method. Background technique [0002] Construction waste refers to the waste generated during the construction, repair and demolition of buildings, including sand, bricks, concrete blocks, waste wood, glass, asbestos, paper scraps, waste plastics, metals and others. At present, my country's annual construction waste is about 1.55 billion tons. A large amount of construction waste not only seriously affects people's lives, but also hinders the development of cities. The construction waste that can be used as a resource is about 800 million tons. The existing domestic construction waste recycling method is a production process that rationally combines different crushing equipment, screening equipment, transmission equipment and equipment for removing impurities, such as a construction waste treatment disclosed in the...

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Problems solved by technology

The problems in the screening work are as follows: First, the drum is a relay type during screening, that is, the material to be screened must fall directly on the drum to realize the diversion effect, and the material that does not fall on the drum cannot be realized. Screening will affect the screening effect; second, the drum will collide with the material for a long time, and the service life is short; third, because the drum must be located "below the sprinkling end of the belt conveyor and on the falling track of the sprinkling material" to achieve the diversion effect, so the sprinkling The angle of the device and the wind device must also be relatively fixed, and the adaptability of the equipment is not strong; in addition, this kind of waste treatment and screening device is mainly used to deal with domestic waste, and the screening process will be accompanied by a large number of Dust, the equipment cannot realize the recovery and treatment of dust

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