Two-stage mechanical sand recycling device

Abstract

The invention relates to the technical field of mechanical sand collectors for a tower dry sand making system, in particular to a two-stage mechanical sand recycling device. The two-stage mechanical sand recycling device comprises a coarse sand collector and an inertial dust separator which are sequentially connected in series. The coarse sand collector comprises a 90 degree curved duct air channel and a dust collecting cover arranged above the 90 degree curved duct air channel in a covering mode. A collecting cabin is formed between the dust collecting cover and the lateral wall, facing upwards, of the 90 degree curved duct air channel. A set of sand collecting plate is arranged on the lateral wall, facing upwards, of the 90 degree curved duct air channel. A sand inlet is formed in the lateral wall of the 90 degree curved duct air channel and connected to the sand collecting plate. A sand discharging opening is downwards formed in the end, close to the air inlet of the 90 degree curved duct air channel, of the collecting cabin. The inertial dust separator comprises an air channel structure, a baffle and a material collecting structure. The device has a two-stage recycling structure. Coarse sand recycling and fine sand recycling are conducted separately. The size is small, mounting is convenient, and the recycling rate is high. Collecting efficiency is improved, and working resistance is not improved. Energy consumption is lowered.

Description

technical field [0001] The invention relates to the technical field of a machine-made sand recovery device for a tower dry sand-making system, in particular to a two-stage machine-made sand recovery device with a two-stage recovery structure, small size, convenient installation, classification recovery function and high recovery efficiency. Background technique [0002] As an important structural material component of infrastructure construction, sand below 5mm is the most important raw material for basic products in the construction industry such as concrete and cement components. Sand and gravel can be divided into two types: natural sand directly excavated and artificially processed machine-made sand, of which machine-made sand accounts for about 68%. At present, natural sand resources are close to exhaustion, and the development of machine-made sand has become the mainstream trend. [0003] The existing machine-made sand industry has many problems such as low product qu...

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Problems solved by technology

[0005] In order to solve the problems of the existing machine-made sand recovery device, such as low recovery efficiency, large volume, difficult arrangement and installation, increased resistance, improved system power, and increased energy consumption, the present invention provides a dual-stage The recovery structure separates the recovery of coarse sand and fine sand. It is small in size, easy to install, and high in recovery efficiency. It will not increase the working resistance while improving the collection efficiency. It is a two-stage machine-made sand recovery device that can reduce energy consumption.

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