A kind of micron powder material controllable classification air sieve and screening method

A technology of powder material and airflow sieve, which is used in powder engineering, pneumatic conveying, screening technology, and fluidized bed fields to avoid easy blockage and improve efficiency.

Active Publication Date: 2022-07-05
CALCULATION AERODYNAMICS INST CHINA AERODYNAMICS RES & DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to provide a controllable grading airflow sieve and screening method for micron-sized powder materials, so as to solve the problems existing in the above-mentioned existing screening methods

Method used

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  • A kind of micron powder material controllable classification air sieve and screening method
  • A kind of micron powder material controllable classification air sieve and screening method
  • A kind of micron powder material controllable classification air sieve and screening method

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Embodiment

[0041] like figure 1 As shown, this embodiment proposes a controllable grading airflow sieve for micron-level powder materials, including a high-pressure air source 1 (the high-pressure air source 1 refers to an air source whose pressure is greater than atmospheric pressure, generally higher than 5 atmospheric pressure can be used high-pressure gas source 1), gas transmission pipeline 2, automatic air regulating valve 3, sieving chamber 5, ultra-thin sample stage 6 (in order to reduce the flow field disturbance in the experimental test, the thickness of the ultra-thin sample stage 6 is generally selected as the sieve One thousandth of the height of the sub-chamber 5), the discharge pipeline 8, the powder material collection box 9, the main control system 11 and the sample table vibrator 13;

[0042] One end face of the screening chamber 5 is provided with a jet port 4, and the jet port 4 is communicated with the high-pressure gas source 1 through the gas transmission pipeline...

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Abstract

The invention provides a controllable grading airflow sieve and a screening method for micron-level powder materials. A powder material collection box, a main control system and a sample stage vibrator; one end face of the screening chamber is provided with an air jet port, which is connected to a high-pressure air source through a gas transmission pipeline; an automatic adjustment system is arranged on the gas transmission pipe air valve, the automatic air regulating valve is controlled by the main control system; the other end face of the screening chamber is connected to the powder material collection box through the discharge pipeline; the powder material collection box is provided with a discharge port; the An ultra-thin sample stage is arranged inside the screening chamber, and a feeding port is arranged on the side of the corresponding ultra-thin sample stage; the sample stage vibrator is connected with the screening chamber. The invention can avoid the problems of easy blockage, easy loss and difficult maintenance caused by the use of mesh sieves, and greatly improves the efficiency of classification and screening of powder materials.

Description

technical field [0001] The invention relates to the technical fields of fluidized bed, pneumatic conveying, screening technology, powder engineering and the like, in particular to a controllable grading airflow sieve and a screening method for micron-level powder materials. Background technique [0002] Granules and powder raw materials of various material types are widely used in the field of material processing and production and life. However, in the production and processing of granular materials, there is often uneven particle size, which leads to a decline in the quality of granular products. In particular, the size of micro-nano particles is small, and it is easy to agglomerate and block the holes of the screen. Therefore, it is difficult to use traditional sieves for screening and classification. [0003] For the screening of granular materials, the method of vibrating screening is currently used, but this method often causes mesh blockage, and the screening efficien...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B07B4/08B07B11/02B07B11/04B07B11/06
CPCB07B4/08B07B11/02B07B11/04B07B11/06
Inventor 李婷婷李青袁先旭周强
Owner CALCULATION AERODYNAMICS INST CHINA AERODYNAMICS RES & DEV CENT
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