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Concrete dry aggregate continuous multistage air classification method

A grading method and multi-stage wind technology, which are applied in chemical instruments and methods, solid separation, and separation of solids from solids by air flow, can solve the problem of inability to meet the gradation requirements of aggregates of different particle sizes and reduce finished concrete. Quality, low aggregate content and other issues, to achieve the effect of eliminating washing and dehydration steps, particle size concentration, and reducing pollution

Inactive Publication Date: 2014-01-22
XINJIANG YUXIN CONCRETE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, there are still the following problems in the particle size of the aggregates of all levels obtained after the classification of the existing winnowing and grading system: one is not concentrated enough, and the aggregates within the same particle size range in the aggregates of all levels obtained after winnowing The content is too low to meet the grading requirements of the concrete configuration production process for aggregates of different particle sizes
Second, the aggregate after winnowing still contains a certain amount of stone powder and soil, which will reduce the quality of the finished concrete when mixing concrete

Method used

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  • Concrete dry aggregate continuous multistage air classification method
  • Concrete dry aggregate continuous multistage air classification method
  • Concrete dry aggregate continuous multistage air classification method

Examples

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Embodiment 1

[0061] Such as Figure 4a to Figure 8 As shown, a continuous multi-stage winnowing and grading method for concrete dry aggregates of the present invention adopts a continuous multi-stage winnowing and grading system for dry concrete aggregates. The system includes a continuous multi-stage winnowing and grading device 10 , a blower 20 , a cyclone filter 30 , a dust collection filter 40 and an induced draft fan 45 successively.

[0062] The continuous multi-stage winnowing and classifying device 10 includes a dropping hopper 11 , a kneading deslimer 12 , a continuous multi-stage winnowing and classifying box 13 and a receiving bin 14 successively.

[0063] The falling hopper 11 is bucket-shaped, and the feed port corresponding to the rubbing deslimer 12 is arranged above the rubbing deslimer 12 . The aggregate is thrown into the drop hopper 11 through other feeding mechanisms, and then enters the rubbing deslimer 12.

[0064] The kneading deslimer 12 can adopt the following tw...

Embodiment 2

[0097] Such as Figure 4a , Figure 4b and Figure 5 As shown, the main difference between the present embodiment and the first embodiment is that the blower 20 is replaced by the induced draft fan 45, and the air outlet of the induced draft fan 45 is connected to the air discharge port of the dust collection and filtering equipment 40, and the lower inlet of the lower winnowing classification box 131b The tuyeres 131e are opened. The induced draft fan 45 in this embodiment can be set independently, or utilize the cited wind attached to the dust collecting and filtering equipment 40 .

[0098] The air outlet of the induced draft fan 45 is connected to the air outlet of the dust collecting and filtering equipment 40 in the production line, and the air outlet of the induced draft fan is connected to the upper air inlet 131c. Inside the box 131a. Through the suction effect of the induced draft fan, the wind pressure and air volume of the same intensity are formed in the lower...

Embodiment 3

[0102] The main difference between this embodiment and Embodiment 1 is that the air outlet of the blower 20 is respectively connected to the upper air inlet 131c and the lower air inlet 131e through the air duct.

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Abstract

The invention discloses a concrete dry aggregate continuous multistage air classification method which is achieved by means of the following steps that mixed aggregate is thrown into the same sealed space, multistage air classification is carried out continuously on the mixed aggregate, and the mixed aggregate is divided into classified aggregate within multiple particle diameter ranges. According to the concrete dry aggregate continuous multistage air classification method, multistage air classification is carried out on the mixed aggregate continuously to enable particle sizes of classified aggregate to be more concentrated; soil and stone powder blended in the mixed aggregate are separated from the classified aggregate through continuous multistage air classification and are discharged, the classified aggregate is clean, the steps of water washing and dewatering can be omitted, the technological process is shortened, cost is reduced, and quality of concrete finished products is improved.

Description

technical field [0001] The invention relates to the field of sorting and grading dry solid materials in various industries of industrial production, in particular to a method for winnowing and grading dry concrete aggregates. Background technique [0002] In the field of concrete production, the state vigorously advocates high-quality, high-quality, and low-cost concrete production technology, so as to achieve the purpose of saving energy and reducing consumption. Moreover, the state also vigorously encourages environmental protection and energy-saving production, and strives to improve production efficiency, reduce production costs, reduce industrial noise, reduce dust pollution, and improve smog weather. [0003] In the production of ready-made concrete configuration, some enterprises currently use the concrete dry aggregate winnowing and grading system to classify aggregates such as sand, stone and mineral additives. Such as Figure 1 to Figure 3 As shown, the winnowing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07B7/01B07B11/00B07B11/02B07B11/06
Inventor 王建军彭训民李兰儒王红伟吴善试郭靖
Owner XINJIANG YUXIN CONCRETE
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