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A device and method for screening needle-shaped crushed pebbles

A screening device and needle-like technology, which is applied in chemical instruments and methods, sieves, solid separation, etc., can solve the problems of subjective misjudgments by testers, long test periods, inaccurate test results, etc., and eliminate human visual inspection. Error, shorten the test cycle, reduce the effect of test time

Active Publication Date: 2022-06-03
CHINA RAILWAY NO 9 GRP ENG TESTING CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing detection technology is to use needle and flake gauges to detect gravel and pebbles. Specifically, the test personnel visually remove the samples that are not needle flakes and then compare them one by one. Subjective misjudgment by testers, inaccurate test results, and long test cycles

Method used

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  • A device and method for screening needle-shaped crushed pebbles
  • A device and method for screening needle-shaped crushed pebbles
  • A device and method for screening needle-shaped crushed pebbles

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Embodiment Construction

[0027] A needle-shaped crushed pebble screening device provided in this embodiment includes a sheet-shaped screen 1, a needle-shaped screen 2, a screen wall 3, and a screen support 4. The screen wall 3 and the screen support 4 are fixedly connected. The screen 1 and the needle screen 2 are replaceably placed on the screen support 4. The inner diameter of the upper opening of the screen wall 3 is slightly larger than the diameter of the sheet screen 1 and the needle screen 2. The lower part of the screen support 4 The inner diameter of the upper opening of the screen wall 3 is the same, which is convenient to be combined with the screen bottom tray 9. The sheet screen 1 is provided with screen through holes 5, and the needle screen 2 is provided with screen needle through holes 6.

[0028] The number of through-holes 5 of the sieve screen 1 is made according to the nominal size of the stone according to Table 7.9.3-2 in (JGJ 52-2006). The width of the lower part of 5 refers to ...

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Abstract

A screening device and method for needle-shaped broken pebbles belongs to the technical field of engineering material testing and detection, and in particular relates to a screening device and method for needle-shaped broken pebbles. The invention provides a device and method for screening needle-shaped broken pebbles, which can avoid inaccurate detection caused by manual visual screening, and are convenient to operate and improve screening efficiency. The invention provides a screening device for needle-shaped crushed pebbles, which includes a sheet-shaped screen, a needle-shaped screen, a screen wall, and a screen support, and is characterized in that: the screen wall and the screen support are fixedly connected, and the The sheet-shaped screen and the needle-shaped screen can be replaced on the screen support, the sheet-shaped screen is provided with screen through-holes, and the needle-shaped screen is provided with needle through-holes. The present invention also provides a method for screening needle-shaped broken pebbles, using the above-mentioned screening device.

Description

technical field [0001] The invention belongs to the technical field of engineering material testing and detection, and in particular relates to a needle-shaped crushed pebble screening device and method. Background technique [0002] Crushed stone and pebbles are coarse aggregates used to prepare concrete. They are engineering materials with certain strength after mixing with cement, fly ash and other cementitious materials, fine aggregates, admixtures, and water to harden. Material performance status, etc. Among them, the higher the needle and flake content of crushed stone or pebble has a great influence on the later strength of concrete, so the needle and flake content is a must-test item. However, the existing detection technology is to use needles and sheet gauges to detect gravel and pebbles. Specifically, the testers visually remove the samples that are not needle-shaped and then compare them one by one. The testers made subjective misjudgments, the test results were...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B07B1/02B07B1/46
CPCB07B1/02B07B1/4609Y02W30/91
Inventor 赵家满刘东洲高昆勇王振华纪文雨
Owner CHINA RAILWAY NO 9 GRP ENG TESTING CO LTD
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