A recycled concrete crushing and screening device

Abstract

The invention discloses a crushing and screening device for recycled concrete, which comprises a sealed pulverizing box body, a pre-pulverizing feeding hopper is communicated with the upper end of the sealed pulverizing box body, a screening rolling assembly is arranged in the sealed pulverizing box body, and the screening rolling assembly includes a The first screen mesh connected to the side wall of the crushing box, a plurality of mutually parallel first rotating rollers are arranged below the first screen mesh, and a first moving screening block is arranged under each first rotating roller. Each side is provided with a second moving screening block, the upper end of the first moving screening block is fixedly connected with a first arc-shaped rolling block, and the upper end of each second moving screening block is fixedly connected with a second arc-shaped rolling block, and the second arc-shaped rolling block is fixedly connected to the upper end. Both the cambered surface of the rolling block and the cambered surface of the first curved rolling block are arranged in cooperation with the surface of the first rotating roller. In the present invention, the crushing treatment of materials is convenient, and the waste concrete can be crushed strongly, so that the quality of reuse is not affected.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a recycled concrete crushing and screening device. Background technique [0002] Recycled concrete means that waste concrete blocks are crushed, cleaned and graded, mixed with gradation in a certain proportion, partially or completely replaced by natural aggregates (mainly coarse aggregates) such as sand and gravel, and then added with cement, water, etc. new concrete. [0003] In the process of processing discarded concrete blocks, it is necessary to undergo multiple crushing and cleaning to obtain recycled concrete. In the process of existing waste concrete processing, cleaning is carried out after the crushing is completed, and part of the impurities are screened out. In this way The processing capacity of waste concrete has been increased by the device. At the same time, due to the large surface gap of the crushed aggregate, it is easy to absorb water and saturate, and the ...

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Problems solved by technology

[0003] In the process of processing discarded concrete blocks, it is necessary to undergo multiple crushing and cleaning to obtain recycled concrete. In the process of existing waste concrete processing, cleaning is carried out after the crushing is completed, and part of the impurities are screened out. In this way The processing capacity of waste concrete has been increased by the device. At the same time, due to the large surface gap of the crushed aggregate, it is easy to absorb water and saturate, and the degree of looseness is high. The existing crushing technology cannot crush waste concrete strongly, which affects reusable quality

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