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Fine powder smashing and wind-screening mechanism for waste concrete recycled aggregates

A technology for waste concrete and recycled aggregate, applied in the field of building materials, can solve the problems of low working accuracy, changing tools, inconvenient cutting, etc., and achieve the effects of improving the crushing effect, increasing the number of impacts, and improving the crushing efficiency.

Active Publication Date: 2018-11-16
GUANGDONG NO 2 HYDROPOWER ENGINEERING COMPANY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the prior art, roller crushing and impeller knife rotary cutting are mostly used for crushing. The crushing effect of roller crushing only exists in the gap area between the pair of rollers, resulting in small processing capacity per unit time, slow work efficiency, and low work accuracy. However, the impeller knife rotary cutting has the disadvantages of greater damage to the impeller knife, the need to change the knife frequently, and the disadvantage of inconvenient blanking
In addition, most of the crushing in the prior art is a single-stage crushing method, which leads to low aggregate recovery efficiency of recycled concrete, so repeated crushing is required, resulting in poor flow of industrial operations

Method used

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  • Fine powder smashing and wind-screening mechanism for waste concrete recycled aggregates
  • Fine powder smashing and wind-screening mechanism for waste concrete recycled aggregates
  • Fine powder smashing and wind-screening mechanism for waste concrete recycled aggregates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] like figure 1 As shown, this embodiment discloses a finely crushed wind-powered screening mechanism for waste concrete recycled aggregates, including a pre-crushed disc assembly 105 , a centrifugal crushing and feeding device 106 , a licker-in crushing device 107 , and a wind-powered screening device 108 .

[0041] like Figure 2-3 As shown, the pre-shredded disc assembly 105 includes a guide table 1051 and a stopper. The guide platform 1051 is in the shape of a circular platform with a narrower upper end and a wider lower end. The periphery of the stopper is on the side of the guide platform 1051 and the bottom of the stopper is rotationally connected or in contact with the side surface of the guide platform 1051. It includes an inner stopper layer 10521 and an outer Layer stopper layer 10522 and inner stopper layer 10521 are provided with a blanking gap 1053 that penetrates up and down. Preferably, a screen (not shown) is installed at the blanking gap 1053 . A feed ...

Embodiment 2

[0051] like Figure 7 , 8 As shown, the difference between this embodiment and the above-mentioned embodiments is that the bottom surface of the upper pressing plate 1071 and the top surface of the lower pressing plate 1072 are concave and convex surfaces. A plurality of screw mandrels 1075 are vertically arranged in the crushing chamber, and the thread directions of the upper section of each screw mandrel 1075 and the lower section of the screw mandrel 1075 are opposite. 1072 is sleeved on the lower section of the screw rod 1075 through the second screw sleeve. One end of the blanking plate 1074 is hinged with one side of the blanking port, and a second torsion spring 1078 is installed at the hinge of the blanking plate 1074 and the blanking port; The free end can snap or suck on the other side of the discharge port. The lower segment of the screw mandrel 1075 is slidably fitted with a sliding sleeve 1077, which is connected with the bottom of the lower pressing plate 1072...

Embodiment 3

[0054] like Figure 7 As shown, the difference between this embodiment and the above-mentioned embodiment is that the number of needling rollers 1073 is an odd number, the end of each needling roller 1073 is sleeved with a first rolling wheel 10701, and all the first rolling wheels 10701 They are connected by the first rolling belt. One of the first scroll wheels 10701 is driven by a first scroll wheel motor, a first bevel gear 10702 is sleeved on the output shaft of the first scroll wheel motor, and a second bevel gear is sleeved on one of the screw rods 1075 10703, the mutual transmission between the first bevel gear 10702 and the second bevel gear 10703 is realized through a reversing assembly. The reversing assembly includes a third bevel gear 10704 and a fourth bevel gear 10705, the first bevel gear 10702 meshes with the third bevel gear 10704, the third bevel gear 10704 is connected with the fourth bevel gear 10705 through a shaft, The fourth bevel gear 10705 meshes wi...

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Abstract

The invention discloses a fine powder smashing and wind-screening mechanism for waste concrete recycled aggregates. The fine powder smashing and wind-screening mechanism comprises a pre-smashing circular disc assembly, a centrifugal type smashing unloading device, a licker-in pressing type smashing device and a wind-screening device, wherein the centrifugal type smashing unloading device is positioned below the pre-smashing circular disc assembly; the licker-in pressing type smashing device is positioned below the centrifugal type smashing unloading device; and the wind-screening device is used for screening powder which drops from an unloading through hole. The fine powder smashing and wind-screening mechanism integrates various smashing ways such as centrifugal smashing, grinding and smashing, and rolling and smashing, and performs pre-smashing by utilizing the advantages of large capacity and large load of centrifugal smashing, so that load of next smashing is relieved, and next smashing efficiency is improved; at a transition unloading stage, transition smashing is performed in a mode of unloading during centrifugal smashing, and complete smashing of particles is realized by fierce extruding and stirring on a target position through a smashing way which integrates grinding smashing and rolling smashing.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a finely crushed wind-powered screening mechanism for recycled aggregates of waste concrete. Background technique [0002] With the development of social economy, the process of urban-rural integration, and the expansion of urban scale, hundreds of millions of tons of waste concrete are produced every year due to demolition, reconstruction, maintenance and repair. If 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] Aggregate is a granular loose material that acts as a skeleton or filling in concret...

Claims

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Application Information

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IPC IPC(8): B02C21/00B02C19/10B02C19/00B02C4/02B02C4/28B02C23/20
CPCB02C4/02B02C4/28B02C19/00B02C19/10B02C21/00B02C23/20
Inventor 谢祥明赵雅玲孟庆红姚楚康
Owner GUANGDONG NO 2 HYDROPOWER ENGINEERING COMPANY LTD
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