construction sand and gravel crushing device

Abstract

The present invention is applicable to the related technical field of crushing, and provides a construction sand and gravel crushing device, comprising a body, the body is provided with a feeding part and a discharge port, and also includes: a crushing component, the crushing component includes: a telescopic The telescopic piece is installed on the body, the extension end of the telescopic piece is fixed with a pressing seat, the bottom of the pressing seat is respectively fixed with a central tip crushing piece and a crushing impact piece, and the pressing seat is also rotatably installed There are several rotating tip crushing pieces, and several of the rotating tip crushing pieces are arranged in a ring shape, and the rotation directions between two adjacent rotating tip crushing pieces are opposite. The construction sand and gravel crushing device provided by the present invention realizes various The comprehensive effect of the crushing method ensures the crushing effect, and can reciprocate the materials on the circular screen plate in all directions to realize the gathering of the sand and gravel, accelerate the screening of the sand and gravel, and speed up the crushing process.

Description

technical field [0001] The invention belongs to the technical field related to crushing, and in particular relates to a sandstone crushing device for building construction. Background technique [0002] Sandstone refers to a loose mixture of sand grains and crushed stones. In geology, mineral or rock particles with a particle size of 0.074~2mm are called sand, and those with a particle size larger than 2mm are called gravel or breccia. Most of them are gravel, called sand and gravel, and some people call sandstone sandstone in daily life. [0003] Because of its good hardness and stable chemical properties, sand and gravel are often used as high-quality building materials and concrete raw materials and are widely used in housing, roads, highways, railways, engineering and other fields. After sand and gravel mining, its size is too large and the size However, sand and stones of uniform size are used in construction, so sand and stones need to be crushed. [0004] The existi...

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Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a construction sand and gravel crushing device, which aims to solve the problem that the existing sand and gravel crushing devices have a single crushing method for sand and gravel, and after one crushing, the sand and gravel will be broken by the crushing force. Open, affecting the crushing effect and the problem of the crushing process

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