Particle shape modifying device for concrete or asphalt mixture aggregates

A technology of asphalt mixture and concrete, applied in the direction of screen, grid, solid separation, etc., to achieve the effect of full grain shape, convenient installation and use, reducing damage and crushing

Inactive Publication Date: 2018-09-07
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the use of crushed stone and artificial sand presents a significant problem when preparing concrete

Method used

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  • Particle shape modifying device for concrete or asphalt mixture aggregates
  • Particle shape modifying device for concrete or asphalt mixture aggregates
  • Particle shape modifying device for concrete or asphalt mixture aggregates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] figure 1 Shown is the concrete or asphalt mixture aggregate particle shape modification device of the technical solution 1 proposed by the present invention, including a silo and an agitator 6 . The silo is a vertically arranged drum-shaped silo, designed as a double silo, and is divided into a particle shape modification silo 5 and a collection silo 8 by a material partition plate 7 . The collection bin 8 is located under the granular modification bin 5 . The agitator 7 is a helical agitator, which is placed vertically in the particle shape modification bin, on the center line of the vertical axis. A plurality of metal grinding balls are arranged in the grain shape modification bin, and a feed inlet 4 is arranged on the side upper part of the grain shape modification bin. The blanking holes (grit holes) are evenly arranged on the surface of the material separating plate 7 . The bottom of the collection bin 8 is in the shape of a funnel, and the bottom of the funnel ...

Embodiment 2

[0041] Basically the same as the embodiment, the difference is: as Figure 4 As shown, the granular modification bin is in the shape of a horizontal barrel, the upper part of the granular modification bin is provided with a feeding port, the lower part of the granular modification bin is open and docked with the collection bin, and the opening is provided with the material partition board. The agitator is arranged transversely on the axis of the grain modification bin. The stirrer can choose a spiral stirrer (such as Figure 4 shown), a non-helical agitator can also be used.

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Abstract

The invention discloses a particle shape modifying device for concrete or asphalt mixture aggregates. The device comprises a material bin and a stirring device, wherein the material bin is divided into a particle shape modifying bin and a material collecting bin through a material separating plate; the stirring device is a spiral stirring device and is vertically arranged in the particle shape modifying bin; a plurality of metal grinding balls are arranged in the particle shape modifying bin; a feeding port is formed in the upper side part of the particle shape modifying bin; charging holes are uniformly distributed in the surface of the material separating plate; and a discharging port is formed in the bottom part of the material collecting bin. The device is simple in structure, convenient to mount and use, and low in energy consumption; the particle shape of the aggregates can be effectively improved, and edges can be removed; the aggregate modifying time can be controlled during use, so that the aggregates can be prevented from being damaged and broken; the device is matched with a screening machine and realizes continuous production work.

Description

technical field [0001] The invention relates to a concrete or asphalt mixture aggregate processing device, in particular to a concrete or asphalt mixture aggregate particle shape modification device. Background technique [0002] Aggregate is the main material used in the preparation of asphalt mixture and cement concrete. Aggregate accounts for more than 3 / 4 of the volume and mass of concrete. Its characteristics are important for the rheological properties of fresh concrete, the mechanical properties and durability of hardened concrete. influences. The particle shape characteristics have a great influence on the characteristics of the aggregate. It is generally believed that the particle shape of the coarse aggregate is the best sphere or cube. With the increase of the needle-shaped coarse aggregate content, the porosity and ratio In this way, it is easy to increase the water absorption on the surface of the aggregate, which in turn affects the fluidity of the fresh concr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B31/06B24B31/12C04B20/02B07B1/04
CPCB24B31/06B07B1/04B24B31/12C04B20/02
Inventor 姬永生张莉徐圣楠石博文吴守荣刘本琳张领雷黄国栋李军刘丽丽李果刘志勇
Owner CHINA UNIV OF MINING & TECH
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