Three-stage crusher for waste concrete recycled fine aggregate

Abstract

The invention discloses a three-stage crusher for waste concrete recycled fine aggregate. The three-stage crusher comprises a first jaw plate and a second jaw plate opposite to the first jaw plate, and further comprises a roller, screening discharging channels, a fixed cover, a rotary extrusion piece, a turnup plate, an adjusting device, supporting rods and a discharging fence; a first-stage crushing channel is formed between the first jaw plate and the second jaw plate; a second-stage crushing channel is formed between the bottom of the second jaw plate and the roller; the screening discharging channels are arranged below the second-stage crushing channel; the top of the fixed cover communicates with the bottoms of the screening discharging channels; a third-stage crushing channel is formed between the rotary extrusion piece and the fixed cover; and the circle of discharging fence is arranged on the periphery of the lower portion of the fixed cover. The three-stage crusher adopts thethree-stage crushing mode, the crushing strength and the crushing effect are improved, and continuous crushing of different batches of concrete blocks can be achieved. All components of the three-stage crusher are highly integrated and closely cooperate with one another, and the equipment manufacturing cost is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a three-stage crusher for waste concrete recycled fine aggregate. Background technique [0002] The construction industry produces a large amount of waste concrete every year. If the waste concrete is directly stacked or landfilled, it will not only cost a lot of freight, but also cause secondary pollution to the environment. If the waste concrete can be refined to realize resource recycling, it can not only reduce environmental pollution, protect the ecological environment, and meet the requirements of sustainable development; at the same time, it can save energy and reduce cost consumption. [0003] Among them, re-extracting fine aggregate from waste concrete is an important treatment technology. Fine aggregate refers to the aggregate with a particle size below 5mm, which is a granular loose material that acts as a skeleton or filling in concrete. [0004] Patent a...

AI Technical Summary

Problems solved by technology

This method has the following disadvantages: as we all know, when we chew some hard or hard-to-tear food, we need to use force on the upper and lower gums at the same time, and the upper and lower gums have the greatest chewing effect on food when the upper and lower gums are bitten in dislocation; State-of-the-art Jaw Crusher realizes crushing by only moving one jaw plate, but it is difficult to achieve good crushing effect on some materials with relatively high hardness.

This method has the following disadvantages: because there is a gap between the static cone and the moving cone, the gap is the crushing chamber and also the loading and unloading channel. In this way, some mineral materials fall through the gap before being crushed, which greatly affects the crushing efficiency. ; In the traditional shake-type crushing, there will always be a local area with a wide gap, which will also increase the probability of direct feeding of mineral materials

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