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Stone grading method

A grading and stone technology, applied in the direction of analyzing materials, measuring devices, instruments, etc., can solve the problems of lack of mixed stone proportion detection and control methods, affecting the quality and efficiency of stone grading, and inability to guarantee the accuracy of stone grading. , to achieve the effect of improving efficiency and saving production costs

Inactive Publication Date: 2015-01-07
刘执军
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Problems solved by technology

The traditional stone grading control is an open-loop system, which adopts the method of segmented operation, weighs the stones of each grade in batches and then mixes them. It lacks real-time and effective detection and control methods for the proportion of mixed stones, and the stone gradation cannot be guaranteed. accuracy, which seriously affects the quality and efficiency of stone grading

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Embodiment Construction

[0027] The specific embodiments of the present invention will be further described below in conjunction with the drawings.

[0028] Such as figure 1 As shown, taking 4 grades of stone grading as an example, the stone grading process is as follows: firstly, the sieved stones 1 of different grades are put into the corresponding hopper groove 2 respectively, and the lower end of the hopper groove 2 has a stepping motor 3 The controlled valve 4 can control the size of the downstream flow of the stone material. Different grades of stone material 1 are transferred to the mixing box 6 through the belt 5 and evenly mixed and then transferred to the image collection belt 7, and the camera 8 above the image collection belt 7 collects the fully mixed stone material 1 The image is transmitted to the computer controller 9. After processing, the ratio of each grade of stone is obtained, and the ratio is compared with the set gradation ratio to drive the stepper motor 3 to control the valve 4 op...

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Abstract

The invention discloses a stone grading method which comprises the steps of carrying out synchronous acquisition on the image of gravel which is fully mixed after being graded; pre-processing the image information, and then extracting the boundary information of the processed image; finally, dividing the area of each piece of gravel by morphological reconstruction and watershed transformation, calculating the proportions of all grades of gravel according to the projected areas of all the pieces of gravel, comparing the calculated proportions with the set grading value, feeding the results back into a controller, and adjusting the size of the opening degrees of funnel slot valves with the corresponding grades by calculation to achieve the aim of closed-loop control. The stone grading method has the advantages that the traditional stone grading segmented operation is changed, and stone grading is continuously carried out, so that the working efficiency is increased, and the production cost is lowered.

Description

Technical field [0001] The invention relates to a stone material grading method, which belongs to the field of engineering construction. Background technique [0002] With the rapid development of national economy and science and technology, especially the rapid development of today’s infrastructure, more and more technical problems closely related to crushed stone particles have appeared in many fields, such as the size and shape distribution of crushed stone particles. Determine their performance. Crushed stone particles are very important in people’s lives and production. Whether used as a raw material in the production process, or as an intermediate or final product in the production process, they often have strict requirements on their size and distribution to ensure their use Performance and quality. [0003] The measurement of rock fragmentation has always been a concern of people, and traditional manual measurement methods are difficult to adapt to the needs of continuous...

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Application Information

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IPC IPC(8): B02C23/00B02C25/00G01N15/02
CPCG01N15/0227G01N15/00
Inventor 朱涛张明金李红
Owner 刘执军
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