WO2008032363A1 - Procédé permettant de mesurer la grosseur de grain et appareil permettant de mesurer la grosseur de grain - Google Patents

Procédé permettant de mesurer la grosseur de grain et appareil permettant de mesurer la grosseur de grain Download PDF

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Publication number
WO2008032363A1
WO2008032363A1 PCT/JP2006/318036 JP2006318036W WO2008032363A1 WO 2008032363 A1 WO2008032363 A1 WO 2008032363A1 JP 2006318036 W JP2006318036 W JP 2006318036W WO 2008032363 A1 WO2008032363 A1 WO 2008032363A1
Authority
WO
WIPO (PCT)
Prior art keywords
particle size
agglomerate mixture
mixture
agglomerate
sensor
Prior art date
Application number
PCT/JP2006/318036
Other languages
English (en)
Japanese (ja)
Inventor
Takato Kaya
Ken Shimazutsu
Original Assignee
Kotobuki Engineering & Manufacturing Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kotobuki Engineering & Manufacturing Co., Ltd. filed Critical Kotobuki Engineering & Manufacturing Co., Ltd.
Priority to PCT/JP2006/318036 priority Critical patent/WO2008032363A1/fr
Publication of WO2008032363A1 publication Critical patent/WO2008032363A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/02—Investigating particle size or size distribution
    • G01N15/0205—Investigating particle size or size distribution by optical means

Definitions

  • the present invention relates to a particle size measurement technique for aggregates of sand, rocks, minerals, etc., wastes such as concrete galley, or agglomerates of various diameters of granular materials, and more particularly agglomerates.
  • the present invention relates to a particle size measuring method and a particle size measuring device capable of accurately measuring the particle size distribution of a mixture in real time.
  • Patent Document 1 A method of using a laser beam to scatter light in the light to refract the light and measure the particle size distribution from the degree of refraction.
  • Patent Document 2 (3) Measurement using a CCD camera (Patent Document 2).
  • Patent Document 1 Japanese Patent Laid-Open No. 6-109615
  • Patent Document 2 JP-A-6-213796
  • the conventional particle size measurement technique for the above-mentioned agglomerate mixture has the following problems.
  • the present invention has been made in view of the above points, and an object of the present invention is to accurately measure the particle size distribution of the agglomerate mixture in real time with a simple means.
  • An object of the present invention is to provide a particle size measuring method and a particle size measuring apparatus capable of performing the same.
  • a further object of the present invention is to provide a particle size measuring method and a particle size measuring device capable of controlling the particle size mixture production apparatus by measuring the particle size distribution of the particle mixture in real time.
  • the first invention of the present application is a particle size measurement method for measuring the particle size from the surface layer to the inside of the agglomerate mixture, forcibly applying vibration to the agglomerate mixture, and dividing the agglomerate mixture according to particle size.
  • the surface roughness of the separated and vibrationally separated agglomerate mixture and the surface of the agglomerate mixture are removed by the surface of the agglomerated mixture and the surface roughness of the exposed layer is measured with a sensor.
  • a particle size measuring method characterized in that the particle size distribution of the agglomerate mixture is obtained by calculation based on the measured values of the surface roughness in the range from the surface layer to the inside of the agglomerate mixture.
  • the force measured by directing force from the surface layer of the agglomerate mixture or the internal force of the agglomerate mixture is also measured toward the surface layer.
  • the particle mixture separated by vibration by moving either one or both of the agglomerate mixture or the sensor and the exposure device for the agglomerate mixture is moved.
  • a particle size measuring method characterized by exposing the inside of a lump mixture.
  • a third invention of the present application is a particle size measuring device for measuring the particle size from the surface layer to the inside of the agglomerate mixture, and a vibration device for forcibly applying vibration to the agglomerate mixture to vibrate and separate the agglomerate mixture;
  • a measuring device for measuring the surface roughness of the agglomerate mixture separated by vibration for each particle size the measuring device comprising a sensor arranged toward the separated agglomerate mixture, and vibration separation
  • An exposure means for removing the agglomerated mixture and exposing the inside thereof, and a central processing unit for calculating the particle size distribution of the agglomerate mixture based on the measured surface roughness by the sensor, the agglomerate mixture,
  • either one or both of the sensor and exposure means that compose the measuring device are moved, and the measured value of the surface roughness in the range from the surface layer to the inside of the vibrationally separated agglomerate mixture is calculated by the central processing unit.
  • a particle size measuring device is provided, wherein the particle size distribution
  • a fourth invention of the present application is the sensor according to the third invention, comprising a conveying means for continuously conveying the agglomerate mixture, and constituting a measuring device toward the conveying means equipped with a vibration device.
  • a particle size measuring device is provided.
  • a fifth invention of the present application provides the particle size measuring apparatus according to the fourth invention, wherein the means for conveying the agglomerate mixture is a belt type conveyor.
  • a sixth invention of the present application provides the particle size measuring device according to the third invention, wherein the sensor and the exposure means constituting the measuring device are arranged so as to be movable along the agglomerate mixture.
  • an elevating means is provided in the agglomerate mixture exposing means integrated with the sensor, and the sensor can be moved up and down in synchronization with the agglomerate mixture exposing means by the elevating means.
  • the present invention can provide a particle size measuring method and a particle size measuring device capable of accurately measuring the particle size distribution of the agglomerate mixture in real time with simple means. Furthermore, the present invention can provide a particle size measuring method and a particle size measuring device capable of controlling the particle size mixture production apparatus by measuring the particle size distribution of the particle mixture in real time.
  • the present invention can measure the particle size of various types of agglomerate mixtures, and is versatile.
  • FIG. 1 shows a model diagram of a particle size measuring apparatus according to an embodiment of the present invention.
  • the particle size measuring apparatus includes a hopper 10 containing a dried agglomerate mixture A, a conveying means 20 for continuously conveying the agglomerate mixture A released from the hopper 10, and an agglomerated mixture being conveyed.
  • a vibration device 30 that forcibly applies vibration to A and a measurement device 40 that measures the surface layer and the internal surface roughness of the vibrationally separated agglomerate mixture A are provided.
  • Agglomerate lump mixture A means a mixture of particles with different particle diameters, such as sand, gravel, crushed stone, concrete crushed material, pharmaceuticals, foods, etc. It is included.
  • the hopper 10 is installed above the conveying start side of the conveying means 20 (in this example, to the right of the conveying means 20), and controls the open / close gate (not shown) provided at the lower end of the hopper 10 to control the agglomerate mixture A.
  • the supply amount can be adjusted and the supply amount per unit time can be grasped.
  • the conveying means 20 is, for example, a belt-type conveyor in which an endless belt 23 is stretched between a pair of drums 21 and 22 and can convey the agglomerate mixture A from the position of the hopper 10 toward the left in the figure. ing.
  • the installation direction of the conveying means 20 is not limited to the horizontal installation form shown in the figure, and may be inclined up and down.
  • the conveying means 20 is not limited to the illustrated belt type conveyor, and various conveying means can be applied.
  • the conveying means 20 may be a fixed conveying path with a downward slope. In short, it is sufficient that the agglomerate mixture A discharged from the hopper 10 can be conveyed in one direction.
  • Excitation device A vibration device 30 is provided in a part of the conveying means 20 (in this example, the central part of the conveying means 20), and vibration can be separated according to the particle diameter by applying vibration to the agglomerate mixture A being conveyed. It is structured as follows.
  • the vibration exciter 30 is arranged below the upper end of the endless belt 23 to vibrate the endless belt 23 directly! As will be shown, this includes the case where the entire conveying means 20 is vibrated.
  • the vibration is imparted to the agglomerate mixture A being transported so that the coarser one in the agglomerate mixture A rises toward the surface layer while the smaller dimension sinks. This is because the agglomerate mixture A is vibrationally separated according to the conditions.
  • the agglomerate mixture A is vibrationally separated according to the particle size, so that it is not necessary to use various types of sieves as in the prior art. Therefore, it is possible to efficiently separate the agglomerate mixture A being conveyed in a short time.
  • the endless belt 23 may have a simple configuration in which vibration is applied! /.
  • the endless belt 23 may be struck directly or indirectly for vibration.
  • the vibration device 30 is appropriately selected in consideration of the type of the agglomerate mixture A and the transport amount.
  • the measuring device 40 for measuring the surface roughness of the agglomerate mixture A is composed of a sensor 41 and an agglomerate mixture A exposing means arranged on the terminal end of the conveying means 20 (in this example, on the left side of the conveying means 20).
  • a central processing unit 44 that calculates the particle size distribution of the agglomerate mixture A based on
  • the sensor 41 is a known optical sensor that can electrically measure the surface roughness of a granule, and for example, a known CCD laser type displacement sensor (manufactured by Keyence Corporation) can be used. It is important that the sensor 41 and the level rod 42 are integrated, and in particular, the protruding length of the lower end of the level rod 42 is substantially coincident with the optimum measurement distance of the sensor 41.
  • the level rod 42 is arranged on the upstream side with respect to the sensor 41 along the conveying direction of the agglomerate mixture A.
  • the surface roughness of the surface layer of the vibration-isolated agglomerate mixture A can be measured, but the inner surface roughness of the hierarchically separated agglomerate mixture A can be measured. I can't.
  • the lower part of the level rod 42 lowered together with the sensor 41 is penetrated into the agglomerated mixture A being conveyed, and the inner surface roughness of the agglomerated mixture A exposed by the level rod 42 is divided.
  • the sensor 41 can be continuously measured.
  • the level rod 42 functions to expose the inside of the agglomerate mixture A which has been separated by vibration to an arbitrary depth.
  • the cross-sectional shape of the level rod 42 is not limited to the circular shape shown in FIG. 4, and any cross-sectional shape can be adopted, and the horizontal width of the level rod 42 is also arbitrary depending on the type of the agglomerate mixture A. Can be set to
  • the elevating means 43 that supports the sensor 41 and the level rod 42 so as to be able to advance and retreat toward the agglomerate mixture A being conveyed includes various fluid cylinders, a screw feed mechanism, and the like.
  • force lifting means 43 indicating that the lifting means 43 is connected to the level rod 42 integrated with the sensor 41 may be provided separately for the sensor 41 and the level rod 42.
  • the sensor 41 may be fixed and installed, and only the level rod 42 may be raised and lowered.
  • the central processing unit 44 has a calculation program for calculating the particle size distribution of the agglomerate mixture A based on the measured value of the surface roughness measured by the sensor 41, the amount of displacement of the level rod 42, and the like.
  • the particle size distribution of the agglomerate mixture A can be displayed in a known output form in real time. [0022] (6) Measuring method
  • the endless belt 23 constituting the conveying means 20 rotates in one direction.
  • the open / close gate at the lower end of the hopper 10 is opened, the quantitative supply of the agglomerate mixture A onto the endless belt 23 is started, and the agglomerate mixture A is mounted on the endless belt 23 and from right to left in the figure. It is conveyed toward.
  • the internal surface roughness can be determined in real time from the surface layer of the agglomerate mixture A in the following manner.
  • the vibration device 30 As the vibration device 30 is operated, the agglomerate mixture A being conveyed is subjected to vibration and separated by vibration.
  • the coarser size of the agglomerate mixture A rises to the surface layer, and the finer size sinks and the agglomerate mixture A is hierarchically separated according to particle size. .
  • the surface roughness of the agglomerate mixture A is as follows. Measurement is performed.
  • the sensor 41 measures the surface roughness of the surface layer of the agglomerate mixture A that has been vibrationally separated.
  • the lower part of the level rod 42 increases the amount of penetration while the surface layer of the agglomerate mixture A is divided.
  • the inside of the agglomerate mixture A is divided by force, and the surface roughness is measured by the sensor 41 inside the exposed agglomerate mixture A.
  • the measurement point P of the sensor 41 remains unchanged, and only the depth of the measurement point P increases.
  • the surface roughness is measured over the entire depth from the surface layer portion to the deepest portion of the vibration-isolated granule mixture A.
  • Information such as the measured surface roughness value measured by the sensor 41 and the displacement amount of the level rod 42 is sent to the central processing unit 44.
  • Fig. 5 shows the measurement result of the particle size measured by the sensor 41 over the entire depth of the surface layer of the agglomerate mixture A up to the deepest part.
  • the central processing unit 44 calculates the particle size distribution of the agglomerate mixture A in real time based on the measured values of the internal surface roughness according to the surface layer and depth of the agglomerate mixture A.
  • the surface roughness inside the agglomerate mixture A can be grasped according to the penetration amount (depth) of the level rod 42. Therefore, by measuring the displacement amount (depth) of the level rod 42, a specific particle size range can be obtained. The amount (total amount) of the corresponding agglomerate mixture A can also be calculated in real time.
  • the particle size measurement of the agglomerate mixture A is performed only for a short time for the purpose of sampling, or continuously during the transportation of the agglomerate mixture A.
  • the measuring device 40 side is arranged to be movable up and down at a fixed position and the agglomerate mixture A side is configured to be movable is described.
  • the measuring device 40 side that can be moved up and down may be configured to be movable along the surface of the granule mixture A.
  • either one or both of the measuring device 40 and the agglomerate mixture A are configured to be relatively movable.
  • the surface layer part of the vibrationally separated agglomerate mixture A is forcibly removed by a removal plate (not shown) and the agglomerate mixture A after being removed Particle size measurement may be performed for
  • the particles with a large particle size not planned for use are mixed in the agglomerate mixture A before measurement, the particles with a large particle size not planned for use are removed to be measured. Can be narrowed down.
  • the hopper 10 may be used instead of the hopper 10 to directly supply the mixture.
  • the particle size distribution of the agglomerate mixture measured in real time can be fed back to the production device for the agglomerate mixture and used for controlling the production device.
  • FIG. 1 is a model diagram of a particle size measuring apparatus according to the present invention.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Combined Means For Separation Of Solids (AREA)

Abstract

Le procédé permettant de mesurer la grosseur de grain et l'appareil permettant de mesurer la grosseur de grain selon l'invention permettent de mesurer avec précision la répartition granulométrique d'un matériau granulaire en temps réel en utilisant des moyens simples. Cet appareil comprend un excitateur à vibrations (30) qui fait vibrer par contrainte un mélange grain-masse (A) pour ainsi diviser le mélange grain-masse (A) et une unité de mesure (40), la rugosité de la couche superficielle et la rugosité de la surface intérieure du mélange grain-masse (A) divisé par la vibration étant mesurées pour chaque grosseur de grain. L'unité de mesure (40) est dotée d'un capteur (41) qui est situé vers le mélange grain-masse (A) divisé par la vibration et d'une mire de nivellement (42) qui est située de manière à permettre l'insertion de celle-ci dans le mélange grain-masse (A) divisé par la vibration.
PCT/JP2006/318036 2006-09-12 2006-09-12 Procédé permettant de mesurer la grosseur de grain et appareil permettant de mesurer la grosseur de grain WO2008032363A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2006/318036 WO2008032363A1 (fr) 2006-09-12 2006-09-12 Procédé permettant de mesurer la grosseur de grain et appareil permettant de mesurer la grosseur de grain

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2006/318036 WO2008032363A1 (fr) 2006-09-12 2006-09-12 Procédé permettant de mesurer la grosseur de grain et appareil permettant de mesurer la grosseur de grain

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016200518A (ja) * 2015-04-11 2016-12-01 鹿島建設株式会社 地盤材料の粒度分布測定方法及びシステム
JP2018066613A (ja) * 2016-10-18 2018-04-26 鹿島建設株式会社 土質判定方法及びシステム
EP3730225B1 (fr) * 2019-04-26 2023-09-20 Thilo Kraemer Installation de dépoussiérage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001079495A (ja) * 1999-09-10 2001-03-27 Takuma Co Ltd 選別機
JP2002221481A (ja) * 2001-01-29 2002-08-09 Nkk Corp 粒度測定装置
JP2002243621A (ja) * 2001-02-15 2002-08-28 Solt Industry Center Of Japan インライン粉粒体粒径測定システム
JP2003035651A (ja) * 2001-07-19 2003-02-07 Kotobuki Giken Kogyo Kk 粒度測定装置及び粒度測定方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001079495A (ja) * 1999-09-10 2001-03-27 Takuma Co Ltd 選別機
JP2002221481A (ja) * 2001-01-29 2002-08-09 Nkk Corp 粒度測定装置
JP2002243621A (ja) * 2001-02-15 2002-08-28 Solt Industry Center Of Japan インライン粉粒体粒径測定システム
JP2003035651A (ja) * 2001-07-19 2003-02-07 Kotobuki Giken Kogyo Kk 粒度測定装置及び粒度測定方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016200518A (ja) * 2015-04-11 2016-12-01 鹿島建設株式会社 地盤材料の粒度分布測定方法及びシステム
JP2018066613A (ja) * 2016-10-18 2018-04-26 鹿島建設株式会社 土質判定方法及びシステム
EP3730225B1 (fr) * 2019-04-26 2023-09-20 Thilo Kraemer Installation de dépoussiérage

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