JP2008063192A - Aggregate fine powder removing device - Google Patents

Aggregate fine powder removing device Download PDF

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JP2008063192A
JP2008063192A JP2006243596A JP2006243596A JP2008063192A JP 2008063192 A JP2008063192 A JP 2008063192A JP 2006243596 A JP2006243596 A JP 2006243596A JP 2006243596 A JP2006243596 A JP 2006243596A JP 2008063192 A JP2008063192 A JP 2008063192A
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aggregate
air
fine powder
transfer surface
receiving plate
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JP4646877B2 (en
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Koji Yoshimura
浩二 吉村
Yasuhisa Kishikawa
泰久 岸川
Minobu Watanabe
美信 渡邊
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Nakayama Iron Works Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an aggregate fine powder removing device improving a fine powder removing efficiency by forming an aggregate transfer surface in a simple structure and also effectively spraying the air from downward and the high-pressure air from upward to the aggregate. <P>SOLUTION: The aggregate K charged from an aggregate charge part 21 is transferred toward an aggregate discharge part 22 on the aggregate transfer surface 20 by applying vibration to a main body part 1, and the fine powder contained in the aggregate is blown away and removed by simultaneously spraying the air from downward jetted from an air hole 23 and the high-pressure air from upward jetted from an air nozzle 5 to the aggregate transferred on the transfer surface. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、破砕機により破砕された骨材を処理の対象とし、この骨材に含まれた微粉を取り除くようにした骨材微粉除去装置に関する。   The present invention relates to an aggregate fine powder removing apparatus that uses aggregates crushed by a crusher as an object of processing and removes fine powders contained in the aggregates.

従来、破砕機により破砕された骨材から微粉等を取り除くようにした骨材微粉除去装置について、本出願人において既に出願している（特許文献１参照）。   Conventionally, the applicant has already filed an application for an aggregate fine powder removing device that removes fine powder and the like from aggregates crushed by a crusher (see Patent Document 1).

この骨材微粉除去装置では、階段状に配設した受板の上方に設けた網状体により形成された骨材移送面上において、骨材投入部から投入された骨材が加振機による振動で骨材排出部に向けて移送されながら満遍なく分散する。
そして、空気流入室内には送風機によって空気取入口から空気が供給され、この空気が受板間の空気流入路を経て網状体の下方から微粉除去室内に向けて吹き付けられるため、骨材に含まれている微粉等を微粉除去室内で効率よく吹き飛ばすことができる。
又、骨材が邪魔板に達すると、骨材の移送が邪魔板によって遮られるため、骨材が一時的に滞留し、この状態で骨材同士が接触し合い、互いにまぶりついた（付着した）微粉を分離させる。
そこにエアノズルから高圧空気が吹き付けられるため、骨材から更に微粉が分離し、その分離した微粉を吹き飛ばすことができるものであった。
特開２００４−３４４８０９号公報 In this aggregate fine powder removing device, the aggregate input from the aggregate input section is vibrated by the vibrator on the aggregate transfer surface formed by the mesh body provided above the receiving plate arranged in a staircase pattern. It is distributed evenly while being transported toward the aggregate discharge part.
Then, air is supplied from the air intake port to the air inflow chamber by a blower, and this air is blown from the lower part of the mesh body toward the fine powder removal chamber through the air inflow path between the receiving plates, so it is included in the aggregate. It is possible to efficiently blow off fine powder and the like in the fine powder removal chamber.
In addition, when the aggregate reaches the baffle plate, the transport of the aggregate is blocked by the baffle plate, so that the aggregate stays temporarily, and in this state, the aggregates are in contact with each other and splatter each other (adhesion) To separate the fine powder.
Since high-pressure air was sprayed there from the air nozzle, fine powder was further separated from the aggregate, and the separated fine powder could be blown away.
JP 2004-344809 A

しかしながら、かかる従来の骨材微粉除去装置は、多数枚の受板を階段状に配設させ、この受板の上方に設けた網状体により骨材移送面を形成させた構造であるため、その構造が複雑になり、部品点数の増大による設備コスト面やメンテナンス面で不利になるという問題があった。   However, such a conventional aggregate fine powder removing device has a structure in which a large number of receiving plates are arranged in a step shape, and an aggregate transfer surface is formed by a net-like body provided above the receiving plate. There is a problem in that the structure becomes complicated and the cost of equipment and the maintenance are disadvantageous due to an increase in the number of parts.

特に従来では、邪魔板によって滞留した状態の骨材に対してエアノズルから高圧空気を吹き付けるようにしており、このため、滞留した骨材の内部にまで空気が侵入できず、高圧空気による吹き付けが不十分になるという問題があった。
又、従来では、邪魔板が網状体の先端に形成されていたため、滞留した骨材に対して網状体の下方からの空気を吹き付けることができない。
このため空気取入口による下方からの空気とエアノズルによる上方からの高圧空気を同時に吹き付けることができず、十分な除去ができないなど、微粉除去能率の面で改良の余地を残していた。 In particular, conventionally, high pressure air is blown from the air nozzle to the aggregate retained by the baffle plate, so that air cannot penetrate into the retained aggregate, and spraying with high pressure air is not possible. There was a problem of becoming enough.
Further, conventionally, since the baffle plate is formed at the tip of the mesh body, air from below the mesh body cannot be blown against the accumulated aggregate.
For this reason, the air from the lower side by the air intake and the high-pressure air from the upper side by the air nozzle cannot be blown at the same time, and sufficient removal cannot be performed.

本発明は、上記のような問題を解決するためになされたもので、骨材移送面を簡単な構造に形成させ、かつ骨材に対して下方からの空気と上方からの高圧空気を効果的に吹き付けて微粉除去能率を向上させることができる骨材微粉除去装置を提供することを課題としている。   The present invention has been made in order to solve the above-described problems. The aggregate transfer surface is formed in a simple structure, and air from below and high-pressure air from above are effectively applied to the aggregate. It is an object of the present invention to provide an aggregate fine powder removing device that can be sprayed to improve the fine powder removal efficiency.

上記の課題を解決するために、本発明の骨材微粉除去装置は、
スプリングにより弾性支持されると共に、平坦板により形成された骨材受板が内部に設けられている本体部と、
前記骨材受板の上面に形成された骨材移送面と、
前記本体部に振動を与えることにより、前記骨材移送面上において骨材投入部から投入された骨材を骨材排出部に向けて移送させるための加振手段と、
前記骨材受板の上方に形成された微粉除去室及びこの微粉除去室の上方に開口するように本体に形成された微粉排気口と、
前記骨材受板の下方に形成された空気流入室及びこの空気流入室内に開口するように本体に形成された空気取り入れ口と、
前記骨材受板にスリット状に形成され、前記空気流入室からの空気を微粉除去室に噴出させるための空気穴と、
前記骨材移送面の上方に配設され、骨材移送面上を移送されている骨材に対し、移送方向に対向する方向から高圧空気を噴射させるエアノズルを備えている構成とした。 In order to solve the above problems, the aggregate fine powder removing device of the present invention is
A main body portion that is elastically supported by a spring and has an aggregate receiving plate formed of a flat plate provided therein,
An aggregate transfer surface formed on the upper surface of the aggregate receiving plate;
Exciting means for transferring the aggregate input from the aggregate input part toward the aggregate discharge part on the aggregate transfer surface by applying vibration to the main body part,
A fine powder removal chamber formed above the aggregate receiving plate and a fine powder exhaust port formed in the main body so as to open above the fine powder removal chamber;
An air inflow chamber formed below the aggregate receiving plate and an air intake port formed in the main body so as to open into the air inflow chamber;
An air hole that is formed in a slit shape in the aggregate receiving plate, and that blows air from the air inflow chamber into the fine powder removal chamber;
It was set as the structure provided with the air nozzle which injects high pressure air from the direction opposite to a transfer direction with respect to the aggregate currently arrange | positioned above the aggregate transfer surface and being transferred on the aggregate transfer surface.

本発明の骨材微粉除去装置にあっては、骨材を移送させる骨材移送面が平坦板により形成された骨材受板の上面に形成されているため、従来と異なり、構造が極めて単純になり、設備コストが安価になるし、メンテナンスが簡単になる。   In the aggregate fine powder removing device of the present invention, the aggregate transfer surface for transferring the aggregate is formed on the upper surface of the aggregate receiving plate formed of a flat plate. Therefore, the equipment cost is low and the maintenance is easy.

特に、滞留している骨材に対してではなく、骨材移送面上を移送されている骨材に対し、空気穴から噴出される下方からの空気と、エアノズルから噴射される上方からの高圧空気とを同時に吹き付けるため、骨材の隅々まで満遍なく空気が行き届き、微粉を効率良く効果的に吹き飛ばして分離除去させることができる。   In particular, the air from the lower side ejected from the air hole and the high pressure from the upper side ejected from the air nozzle to the aggregate transported on the aggregate transport surface, not to the staying aggregate Since air is blown at the same time, the air reaches all the corners of the aggregate, and fine powder can be blown off efficiently and separated and removed.

図１は本発明の１実施例である骨材微粉除去装置の断面図、図２は要部の断面図である。   FIG. 1 is a cross-sectional view of an aggregate fine powder removing apparatus according to an embodiment of the present invention, and FIG.

図において、１は本体部で、内部に空間が形成された函体に形成され、スプリング１０，１０により弾性支持されている。
本体部１の内部には、平坦板により形成された骨材受板２が設けられ、この骨材受板２の上面が骨材移送面２０に形成され、この骨材移送面２０の一端側（図１では左端側）が骨材投入部２１に形成され、他端側（図１では右端側）が骨材排出部２２に形成されている。 In the figure, reference numeral 1 denotes a main body which is formed in a box having a space formed therein and is elastically supported by springs 10 and 10.
An aggregate receiving plate 2 formed of a flat plate is provided inside the main body 1, and the upper surface of the aggregate receiving plate 2 is formed on the aggregate transfer surface 20. One end side of the aggregate transfer surface 20 (The left end side in FIG. 1) is formed in the aggregate input part 21, and the other end side (right end side in FIG. 1) is formed in the aggregate discharge part 22.

本体部１には振動手段としての加振機（図示省略）が連結されており、この加振機は、その振動方向（矢印Ｂ方向）が骨材Ｋの移送方向（矢印Ａ方向）に傾く状態に取り付けられている。
そして、この振動手段により前記本体部１に振動を与えることにより、前記骨材移送面２０上において骨材投入部２１から投入された骨材Ｋを骨材排出部２２に向けて移送させるように形成されている。 The main body 1 is connected to a vibration exciter (not shown) as vibration means, and the vibration direction of the vibration exciter (arrow B direction) is inclined in the direction of transport of the aggregate K (arrow A direction). Attached to the state.
Then, by applying vibration to the main body portion 1 by the vibration means, the aggregate K input from the aggregate input portion 21 is transferred toward the aggregate discharge portion 22 on the aggregate transfer surface 20. Is formed.

前記骨材受板２の上方に微粉除去室３が形成されると共に、骨材受板２の下方に空気流入室４が形成され、この空気流入室４からの空気を微粉除去室３に噴出させるための多数の空気穴２３が前記骨材受板２にスリット状に形成されている。   A fine powder removing chamber 3 is formed above the aggregate receiving plate 2 and an air inflow chamber 4 is formed below the aggregate receiving plate 2, and air from the air inflow chamber 4 is ejected into the fine powder removing chamber 3. A number of air holes 23 are formed in the aggregate receiving plate 2 in a slit shape.

本体部１の底部には前記空気流入室４内に開口するように空気取入口４０が形成され、この空気取入口４０には、送風機４１が接続されている。   An air inlet 40 is formed at the bottom of the main body 1 so as to open into the air inflow chamber 4, and a blower 41 is connected to the air inlet 40.

本体部１の天井部には前記微粉除去室３に開口するように微粉排気口３０が形成され、この微粉排気口３０には、バグフイルタ等の集塵機（図示省略）が接続されている。   A fine powder exhaust port 30 is formed in the ceiling of the main body 1 so as to open into the fine powder removal chamber 3, and a dust collector (not shown) such as a bag filter is connected to the fine powder exhaust port 30.

前記骨材移送面２０の上方には、高圧空気を噴射させるための複数個（実施例では１３個）のエアノズル５が骨材Ｋの移送方向に一定間隔で配設されている。
このエアノズル５は、高圧空気供給装置（図示省略）に接続され、骨材移送面２０上を移送されている骨材Ｋに対し、移送方向に対向する方向から高圧空気を噴射させるように設けられている。 Above the aggregate transfer surface 20, a plurality (13 in the embodiment) of air nozzles 5 for injecting high-pressure air are arranged at regular intervals in the transfer direction of the aggregate K.
The air nozzle 5 is connected to a high-pressure air supply device (not shown), and is provided to inject high-pressure air from the direction opposite to the transfer direction to the aggregate K being transferred on the aggregate transfer surface 20. ing.

次に、この骨材微粉除去装置の作用を説明する。
骨材投入部２１から投入された骨材Ｋは、加振機による振動で骨材移送面２０上を骨材排出部２２に向けて移送される。
この骨材移送面２０上での移送に際し、移送される骨材は、振動により骨材移送面２０上で分散する。 Next, the operation of this aggregate fine powder removing device will be described.
Aggregate K input from the aggregate input unit 21 is transferred toward the aggregate discharge unit 22 on the aggregate transfer surface 20 by vibration by a vibration exciter.
During the transfer on the aggregate transfer surface 20, the transferred aggregate is dispersed on the aggregate transfer surface 20 by vibration.

又、空気流入室４内には送風機４１によって空気取入口４０から空気が供給され、この空気が骨材受板２に形成した空気穴２３を経て微粉除去室３に吹き出される。
この空気穴２３からの吹き出しと同時に、エアノズル５から高圧空気が吹き付けられるもので、このように、骨材移送面２０上で分散している骨材Ｋに対し、空気穴２３から噴出される下方からの空気と、エアノズル５から噴射される上方からの高圧空気とを同時に吹き付けるため、骨材Ｋの隅々まで満遍なく空気が行き届き、微粉を効率良く効果的に吹き飛ばして分離させることができる。
又、エアノズル５からの高圧空気は、骨材移送面２０上を移送されている骨材Ｋに対し、移送方向に対向する方向、いわゆる向かい風の状態で空気が浴びせられるため、骨材Ｋへの風当たりが強くなり、微粉の吹き飛ばし効果を向上させることができる。 In addition, air is supplied into the air inflow chamber 4 from the air intake port 40 by the blower 41, and this air is blown out to the fine powder removal chamber 3 through the air holes 23 formed in the aggregate receiving plate 2.
Simultaneously with the blowout from the air hole 23, high-pressure air is blown from the air nozzle 5. Thus, the lower part ejected from the air hole 23 with respect to the aggregate K distributed on the aggregate transfer surface 20 Since air from above and high-pressure air from above from the air nozzle 5 are blown at the same time, the air can reach all corners of the aggregate K, and the fine powder can be blown and separated efficiently and efficiently.
Further, since the high pressure air from the air nozzle 5 is exposed to the aggregate K being transferred on the aggregate transfer surface 20 in a direction opposite to the transfer direction, that is, in a so-called head wind state, The wind perception becomes stronger and the effect of blowing off fine powder can be improved.

上記のようにして微粉除去室３内に吹き飛ばされた微粉は、空気とともに微粉排気口３０からバグフイルタ等の集塵機に収集されて回収される。
又、微粉を分離除去された処理済の骨材は、骨材排出部２２から取り出され、微粉の含有が少ない骨材として採取される。 The fine powder blown into the fine powder removing chamber 3 as described above is collected and collected together with air from a fine powder exhaust port 30 by a dust collector such as a bag filter.
Further, the processed aggregate from which the fine powder has been separated and removed is taken out from the aggregate discharging section 22 and collected as an aggregate containing a small amount of fine powder.

なお、骨材微粉除去装置において、通常の乾式設備では、従来、原料骨材（原料細骨材）の水分含有率が１．５％程度以下でなければ微粉除去の効果が認められないものであったが、本発明装置では、水分含有率が３．０％程度の原料骨材（原料細骨材）に対して効率よく微粉を除去することができた。   In addition, in the aggregate fine powder removing device, the conventional dry-type equipment has hitherto not been able to recognize the fine powder removal effect unless the moisture content of the raw material aggregate (raw material fine aggregate) is about 1.5% or less. However, in the device of the present invention, fine powder could be efficiently removed from the raw material aggregate (raw material fine aggregate) having a water content of about 3.0%.

一例ではあるが、水分含有率が３．４４％の原料骨材（原料細骨材）に対し、空気穴からの吹き出しと同時にエアノズル５から高圧空気を吹き付けた場合（高圧空気有）と、空気穴からの吹き出しのみの場合（高圧空気無）とで装置通過後の水分量を比較した実験例を以下の表１に示す。   As an example, when high-pressure air is blown from the air nozzle 5 at the same time as blowing out from the air holes (high-pressure air present) with respect to the raw material aggregate (raw material fine aggregate) having a moisture content of 3.44%, air Table 1 below shows an experimental example in which the amount of moisture after passing through the apparatus was compared with the case of only blowing from the hole (without high-pressure air).

Figure 2008063192
Figure 2008063192

表１で示すように、原料骨材の水分含有率が３．４４％のとき、高圧空気無の場合の微粉量が５．８％であったのに対し、高圧空気有の場合の微粉量が２．１％に減少した。
これは、水分含有率が高い原料でも乾式で骨材を生産することができることを意味し、降雨時での骨材生産が可能となるので、梅雨時や降雨量の多い地方でも連続生産が可能になるものである。 As shown in Table 1, when the moisture content of the raw material aggregate is 3.44%, the amount of fine powder in the absence of high-pressure air was 5.8%, whereas the amount of fine powder in the presence of high-pressure air Decreased to 2.1%.
This means that even raw materials with high moisture content can produce aggregates dry, and aggregate production is possible during rainfall, so continuous production is possible even during rainy seasons and regions with high rainfall. It will be.

本発明の１実施例である骨材微粉除去装置の断面図である。It is sectional drawing of the aggregate fine powder removal apparatus which is one Example of this invention. 要部の断面図である。It is sectional drawing of the principal part.

符号の説明Explanation of symbols

１ 本体部
１０ スプリング
２ 骨材受板
２０ 骨材移送面
２１ 骨材投入部
２２ 骨材排出部
２３ 空気穴
３ 微粉除去室
３０ 微粉排気口
４ 空気流入室
４０ 空気取入口
４１ 送風機
５ エアノズル
Ｋ 骨材 DESCRIPTION OF SYMBOLS 1 Main-body part 10 Spring 2 Aggregate receiving plate 20 Aggregate transfer surface 21 Aggregate input part 22 Aggregate discharge part 23 Air hole 3 Fine powder removal chamber 30 Fine powder exhaust port 4 Air inflow chamber 40 Air intake port 41 Blower 5 Air nozzle K Bone Material

Claims (1)

スプリングにより弾性支持されると共に、平坦板により形成された骨材受板が内部に設けられている本体部と、
前記骨材受板の上面に形成された骨材移送面と、
前記本体部に振動を与えることにより、前記骨材移送面上において骨材投入部から投入された骨材を骨材排出部に向けて移送させるための加振手段と、
前記骨材受板の上方に形成された微粉除去室及びこの微粉除去室の上方に開口するように本体に形成された微粉排気口と、
前記骨材受板の下方に形成された空気流入室及びこの空気流入室内に開口するように本体に形成された空気取り入れ口と、
前記骨材受板にスリット状に形成され、前記空気流入室からの空気を微粉除去室に噴出させるための空気穴と、
前記骨材移送面の上方に配設され、骨材移送面上を移送されている骨材に対し、移送方向に対向する方向から高圧空気を噴射させるエアノズルを備えていることを特徴とする骨材微粉除去装置。
A main body portion that is elastically supported by a spring and has an aggregate receiving plate formed of a flat plate provided therein,
An aggregate transfer surface formed on the upper surface of the aggregate receiving plate;
Exciting means for transferring the aggregate input from the aggregate input part toward the aggregate discharge part on the aggregate transfer surface by applying vibration to the main body part,
A fine powder removal chamber formed above the aggregate receiving plate and a fine powder exhaust port formed in the main body so as to open above the fine powder removal chamber;
An air inflow chamber formed below the aggregate receiving plate and an air intake port formed in the main body so as to open into the air inflow chamber;
An air hole that is formed in a slit shape in the aggregate receiving plate, and that blows air from the air inflow chamber into the fine powder removal chamber;
Bone comprising an air nozzle that is disposed above the aggregate transfer surface and jets high-pressure air from a direction opposite to the transfer direction to the aggregate being transferred on the aggregate transfer surface. Material fine powder removal device.
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101004048B1 (en) * 2008-04-11 2011-01-03 이현덕 A sand dry device
KR101031444B1 (en) 2010-11-03 2011-04-26 김도균 Automatic cleaning and fire firefighting system of mill under-bowl
JP2020163256A (en) * 2019-03-28 2020-10-08 Ｊｆｅスチール株式会社 Selection method and selection device of used refractory material
CN113213837A (en) * 2021-05-06 2021-08-06 苏永青 High-density concrete and preparation process thereof
KR102417994B1 (en) * 2022-02-16 2022-07-06 박기홍 Sorting apparatus for foreign material with air

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JPS5030158A (en) * 1973-07-19 1975-03-26
JP2002011407A (en) * 2000-06-28 2002-01-15 Ando Screen Seisakusho:Kk Vibration sieving method and device therefor
JP2004344809A (en) * 2003-05-23 2004-12-09 Nakayama Iron Works Ltd Apparatus for removing fine powder of aggregate

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JPS5030158A (en) * 1973-07-19 1975-03-26
JP2002011407A (en) * 2000-06-28 2002-01-15 Ando Screen Seisakusho:Kk Vibration sieving method and device therefor
JP2004344809A (en) * 2003-05-23 2004-12-09 Nakayama Iron Works Ltd Apparatus for removing fine powder of aggregate

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101004048B1 (en) * 2008-04-11 2011-01-03 이현덕 A sand dry device
KR101031444B1 (en) 2010-11-03 2011-04-26 김도균 Automatic cleaning and fire firefighting system of mill under-bowl
JP2020163256A (en) * 2019-03-28 2020-10-08 Ｊｆｅスチール株式会社 Selection method and selection device of used refractory material
CN113213837A (en) * 2021-05-06 2021-08-06 苏永青 High-density concrete and preparation process thereof
KR102417994B1 (en) * 2022-02-16 2022-07-06 박기홍 Sorting apparatus for foreign material with air

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