JP2016036796A - Metal powder removal unit - Google Patents

Metal powder removal unit Download PDF

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JP2016036796A
JP2016036796A JP2014163343A JP2014163343A JP2016036796A JP 2016036796 A JP2016036796 A JP 2016036796A JP 2014163343 A JP2014163343 A JP 2014163343A JP 2014163343 A JP2014163343 A JP 2014163343A JP 2016036796 A JP2016036796 A JP 2016036796A
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metal powder
granular material
powder
container
unit
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JP6363908B2 (en
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嶋津秀樹
Hideki Shimazu
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Matsui Mfg Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a device so as not to separate a mixed material in discharge time by removing metal powder being foreign matter from a powder and granular material when discharging the powder and granular material from a vessel and a fluid collection hopper, and so as not to separate the mixed material in discharge time by restraining sticking of the powder and granular material by static electricity on an inner wall surface by the static electricity generated in fluid mixing and air transport time, in the present invention.SOLUTION: For attaining the purpose, a metal powder removal unit of a powder and granular material on the present invention comprises a vessel having a straight cylinder part of forming an upper side part for storing the powder and granular material in a substantially cylindrical shape, a taper part of forming a lower side part in a substantially inverse conical cylindrical shape and a discharge pipe for discharging the powder and granular material to a taper part lower end part, and is provided with the metal powder removal unit for the powder and granular material constituted of a conductive substance installed in a lower part of the taper part, forming a conical shape upward and united by joining an inverse conical-shaped object to a lower part, and constituted of a support member for storing a magnet on the inside and providing a cavity with the taper part.SELECTED DRAWING: Figure 1

Description

本発明は、粉粒体材料を吸引式空気輸送で流動ホッパに投入、攪拌混合する時、または貯留された粉粒体を排出するときに、金属粉を除去しつつ同時に、静電気の発生を防止し、排出時、材料が分級しないための金属粉除去ユニットに関する。 The present invention prevents the generation of static electricity while removing the metal powder when the powder material is put into a fluid hopper by suction pneumatic transportation, stirred and mixed, or when the stored powder is discharged. In addition, the present invention relates to a metal powder removing unit for preventing the material from being classified when discharged.

従来技術を示す図８に基いて説明する。従来から、粉粒体材料から異物を除去する方法として、特許文献１に示すホッパ下部に吸引空気輸送された粉粒体材料を受け入れる導入管２２を設け、ホッパ上端部に輸送空気から粉粒体材料を分離させる分離部１８を設け、下端部に粉粒体材料を排出する排出口を設けた流動ホッパが知られている。このような流動ホッパは、空気輸送された粉粒体材料を気流作用により流動ホッパ内において流動攪拌させることで、粉粒体材料から微粉や塵埃等の異物を分離部で分離させるものである。この流動ホッパは嵩密度の異なる粉粒体材料が、流動して嵩密度の低い粉塵は空気と共に、系外に排出され、嵩密度の高いものは、流動ホッパ内に落下してくることで分離するものである。そのため嵩密度の差が少ない金属粉のような粉塵の場合、流動のみでは十分に分離できない場合もあった。 The prior art will be described with reference to FIG. Conventionally, as a method for removing foreign substances from granular material, an introduction pipe 22 for receiving the granular material transported by suction air is provided at the lower part of the hopper shown in Patent Document 1, and the granular material from the transported air is provided at the upper end of the hopper. There is known a fluid hopper provided with a separation part 18 for separating the material and provided with a discharge port for discharging the granular material at the lower end part. Such a fluid hopper separates foreign substances such as fine powder and dust from the particulate material at the separation part by fluidly stirring the particulate material transported by air in the fluid hopper by an air flow action. In this fluid hopper, granular materials with different bulk densities flow, dust with low bulk density flows out of the system together with air, and those with high bulk density are separated by falling into the fluid hopper. To do. Therefore, in the case of dust such as metal powder with a small difference in bulk density, it may not be sufficiently separated only by flow.

そのため、異物の中で金属粉を除去する場合、特許文献２に示す、磁石１００を用いて金属粉を除去するユニットが広く実施されている。これらは磁石１００を複数用いてヨークを挟んで磁力線の効率を高めた丸棒形状のもの利用することが多い。これらの丸棒形状のものを複数同方向に並べ、流動ホッパ下部付近に設置し、粉粒体が通る空間を設けてその間を粉粒体を通過させて金属粉を除去するものである。しかしこの発明は金属粉除去には効果はあるが、流動ホッパで異種材料を混合した後、若しくは容器に混合された材料と貯留した後、排出時に排出部付近がテーパー形状をした容器の場合、形状の異なる混合された粉粒体を排出する時、流れにくく流出抵抗の大きいものと、流れやすく流出抵抗の小さいものと分離されて、流れやすいものから先出しされてしまうと言う問題があった。更に下部から材料を投入する時、丸棒形状の磁石１００を組み合わせた金属粉分離器では空気の流れが乱れ、空気の抵抗が増えて流動ホッパでの攪拌混合が十分に行われず、除粉機能に問題が発生していた。 Therefore, when removing the metal powder in the foreign matter, a unit for removing the metal powder using the magnet 100 shown in Patent Document 2 is widely implemented. These are often used in a round bar shape in which a plurality of magnets 100 are used and a yoke is sandwiched to increase the efficiency of magnetic lines of force. A plurality of these round bar shapes are arranged in the same direction and installed near the lower portion of the flow hopper, a space through which the powder particles pass is provided, and the metal particles are removed by passing the powder particles therebetween. However, this invention is effective for removing metal powder, but after mixing different materials with a fluid hopper, or after storing with the material mixed in the container, in the case of a container where the discharge part is tapered at the time of discharge, When discharging mixed powder particles having different shapes, there is a problem that the powder particles that are difficult to flow are separated from those that have a large outflow resistance, and those that are easy to flow and have a small outflow resistance, and the ones that are easy to flow out. Furthermore, when the material is introduced from the lower part, the metal powder separator combined with the round bar-shaped magnet 100 disturbs the air flow, the air resistance increases, and the stirring and mixing in the fluid hopper is not sufficiently performed. There was a problem.

流動ホッパに吸引輸送、若しくは流動攪拌により、材料が静電気を帯び、排出時に静電気を帯びやすい材料が流動ホッパ壁面に付着するという現象が発生した。このため混合した材料が排出時に静電気を帯びて壁面に付着した材料が取り残され、混合比率が変わってしまうという問題も発生した。 Due to suction transportation or flow agitation to the fluid hopper, the material was charged with static electricity, and a material that was easily charged with static electricity when discharged was attached to the wall surface of the fluid hopper. For this reason, the mixed material is charged with static electricity when discharged, and the material adhering to the wall surface is left behind, resulting in a problem that the mixing ratio changes.

更に流動ホッパで混合した材料を、流動ホッパ下部から排出する時、排出口の中央部付近の材料が優先的に排出され、その排出された材料を補填するため、上部の材料が中心に向かって水平方向に移動していく流出様態を示すことが知られている。この粉粒体が水平移動する時粉粒体間で摩擦力が働き、流れやすい材料が先に移動し、移動しにくい材料は停滞し、このため混合材料の分離が起こる問題があった。 Furthermore, when the material mixed in the fluid hopper is discharged from the lower part of the fluid hopper, the material near the center of the outlet is preferentially discharged, and the upper material is directed toward the center to compensate for the discharged material. It is known to show an outflow mode that moves horizontally. When this granular material moves horizontally, frictional force acts between the granular materials, the material that flows easily moves first, and the material that does not easily move stagnates, so that there is a problem that separation of the mixed material occurs.

特開平１１−１９７４８０JP-A-11-197480 特開２００６−３４１２１２JP 2006-341212 A

本発明は、上記実情に鑑みなされたものであり、粉粒体材料を容器や流動ホッパから排出する時粉粒体材料から異物である金属粉を除去し、材料が替わる時、または付着した金属粉を清掃する時、容易に清掃出来るようにすると共に、混合した材料を排出時に分離しないようにすること。また流動混合や空気輸送時に発生する静電気による内壁面での静電気による粉粒体材料の付着を抑制し、混合した材料が排出時に分離しないようにすることを課題とする。 The present invention has been made in view of the above situation, and when discharging the granular material from a container or a fluid hopper, the metal powder that is a foreign object is removed from the granular material and the material is replaced, or the adhered metal When cleaning powder, make it easy to clean and do not separate the mixed materials when discharging. It is another object of the present invention to prevent adhesion of the powder material on the inner wall surface due to static electricity generated during fluid mixing or pneumatic transportation, so that the mixed material does not separate during discharge.

前記目的を達成するために、第一の手段として本発明に係る粉粒体材料の金属粉除去ユニットは粉粒体を貯留した上部側部位が略円筒形状とされた直胴部と、下部側部位が略逆円錐形状とされたテーパー部と、前記テーパー部下端部に前記粉粒体を排出する排出管とを有する容器において、前記テーパー部に設置した、上部に円錐形状をしたもの、下部に逆円錐形状をしたものを合わせ一体とした導電性物質で構成され、内部に磁石を収納し、前記テーパー部との空隙を得るための支持部材とで構成されていることを特徴とする粉粒体材料用の金属粉除去ユニットである。 In order to achieve the above object, as a first means, the metal powder removing unit of the granular material according to the present invention includes a straight body portion in which an upper side portion storing the granular material is substantially cylindrical, and a lower portion side. In a container having a tapered portion having a substantially inverted conical portion and a discharge pipe for discharging the granular material at the lower end portion of the tapered portion, a conical shape on the upper portion, which is installed on the tapered portion, a lower portion And a support material for containing a magnet inside and obtaining a gap with the tapered portion. It is a metal powder removal unit for granular materials.

前記金属粉除去ユニットは第二の手段として導電性素材からなる前記容器に導電性素材で構成される前記金属粉除去部の表面部と前述支持部材を通じて電気的に接続され、前記粉粒体で発生した静電気を、前記金属粉除去ユニットと前記容器に接触することで移動させ、静電気を外部に放出する構造とすることを特徴とする第一の手段記載の前記粉粒体材料用の金属粉除去ユニットである。 The metal powder removal unit is electrically connected to the container made of a conductive material as a second means through the support member and the surface portion of the metal powder removal unit made of the conductive material, The metal powder for the granular material according to the first means, wherein the generated static electricity is moved by contacting the metal powder removal unit and the container, and the static electricity is discharged to the outside. It is a removal unit.

前記容器は第三の手段として下部が略逆円錐形状とされた前記テーパー部下端部に排出管を設け、前記排出管の側面に空気輸送される粉粒体材料を受け入れる導入管を設け、前記容器上部の直胴部の上端部に空気吸引口が設置されている天蓋と、輸送空気から粉粒体材料を分離させる分離部とが設置されている、粉粒体の流動装置であって、前記流動ホッパ下部のテーパー部に設置することを特徴とする第一の手段乃至第二の手段記載の前記粉粒体材料用の金属粉除去ユニットである。 As a third means, the container is provided with a discharge pipe at the lower end of the tapered part whose lower part has a substantially inverted conical shape, and is provided with an introduction pipe for receiving the granular material that is air-transported on the side of the discharge pipe, A powder flow device in which a canopy in which an air suction port is installed at the upper end of a straight body portion at the top of a container and a separation unit for separating powder material from transport air are installed, The metal powder removing unit for the granular material according to the first or second means, wherein the metal powder removing unit is installed in a tapered portion below the fluid hopper.

前記容器は第四の手段として下部が略逆円錐形状とされたテーパー部下端部に排出管を設け、前記排出管と一定の間隙を持つように外側に同心円状に前記排出管より長い接続管を設け、前記接続管の側面に空気輸送される粉粒体材料を受け入れる導入管を設け、前記容器の直胴部上端部に空気吸引口が設置されている天蓋と、輸送空気から粉粒体材料を分離させる分離部とが設置されている、粉粒体の流動装置であって、前記流動ホッパ下部のテーパー部に設置することを特徴とする第一の手段乃至第二の手段記載の前記粉粒体材料用の金属粉除去ユニットである。 As a fourth means, the container is provided with a discharge pipe at the lower end of the tapered portion whose lower part is substantially inverted conical, and is connected to the discharge pipe so that it has a certain gap and is concentrically outward longer than the discharge pipe. A canopy in which an air inlet is provided at the upper end of the straight body of the container, and a granular material from the transport air The apparatus according to any one of the first to second means, characterized in that it is a powder particle flow apparatus provided with a separation part for separating the material, and is installed in a tapered part below the flow hopper. This is a metal powder removing unit for a granular material.

本発明に関わる粉粒体材料の金属粉除去ユニットは、混合済み材料を貯留する容器のテーパー部に設置することで、材料をマスフロー排出する事ができ、またテーパー部と金属粉除去ユニットの間隙で金属粉を効率よく除去することができた。また、流動ホッパに上述のような構成としたことで、粉粒体材料が空気輸送や流動により、発生する静電気を流動攪拌が行われている間何回も金属粉除去ユニットと接触することで、流動ホッパ系外に放出されるため、流動ホッパ内壁面への粉粒体材料の付着を抑制し、且つ粉粒体排出時の流れを金属粉除去ユニットが制御することで、流動混合した材料を排出時に分級しないようにすることが可能となった。更に材料が替わるとき金属粉除去ユニットが粉粒体の流動ホッパに自重と支持部材の摩擦力のみで固定しているので、容易に取り外して清掃できる。 The metal powder removal unit of the granular material according to the present invention can be mass flow discharged by installing it in the tapered part of the container storing the mixed material, and the gap between the tapered part and the metal powder removal unit. The metal powder could be removed efficiently. In addition, the flow hopper is configured as described above, so that the powder material is brought into contact with the metal powder removal unit many times during the flow stirring while the fluid material is pneumatically transported and flowed. Since the material is discharged out of the fluid hopper system, the powder mixed material is controlled by the metal powder removal unit controlling the flow when the particulate material is discharged, and suppressing the adhesion of the particulate material to the inner wall surface of the fluid hopper It became possible not to classify when discharging. Further, when the material is changed, the metal powder removing unit is fixed to the flow hopper of the granular material only by its own weight and the frictional force of the support member, so that it can be easily removed and cleaned.

金属粉除去ユニットの正面外形図ａと下部から見た外形図ｂを示す。The front external view a of a metal powder removal unit and the external view b seen from the lower part are shown. 粉粒体を貯留する容器に金属粉除去ユニットを設置した時の正面外観図を示す。The front external view when a metal powder removal unit is installed in the container which stores a granular material is shown. 金属粉除去ユニットの支持部材の変形例を示す。The modification of the support member of a metal powder removal unit is shown. 流動ホッパに金属粉除去ユニットを設置した時の外形図を示す。The external view when the metal powder removal unit is installed in the fluid hopper is shown. 粉粒体の流動ホッパを備えた粉粒体材料の輸送システムの一例を模式的に示したシステム構成図を示す。The system block diagram which showed typically an example of the transportation system of the granular material material provided with the fluid hopper of the granular material is shown. 流動ホッパの変形例に金属粉除去ユニットを設置した時の外形図を示す。The external view when the metal powder removal unit is installed in the modification of a fluid hopper is shown. 従来技術の金属粉除去装置を取り付けた流動ホッパの外観正面図を示す。The external appearance front view of the fluid hopper which attached the metal powder removal apparatus of a prior art is shown.

以下に図面を参照しながら、本発明を実施するための最良の形態の説明をする。なお、本発明は本実施形態により限定されるものではない。また、本実施の形態の説明において、同一構成並びに作用効果を奏するところには同一符号を付して重複した説明を行わないものとする。 The best mode for carrying out the present invention will be described below with reference to the drawings. In addition, this invention is not limited by this embodiment. Further, in the description of the present embodiment, the same reference numerals are given to the same configurations and the effects and the same description is not repeated.

図１の（a）は本発明の金属粉除去ユニット１の正面の外形を示し、（b）は（a）のC方向から見た外形を示す。金属粉除去ユニット１は表面部４がステンレス素材で構成されており、平滑で中央の円柱部の上部に円錐形状をなしており、下部は逆円錐形状をなしている金属粉除去部２とステンレス素材の丸棒からなる３本の支持部材３が、上部が円柱部に取り付けられ、下部は後述する排出管１１の内周壁に沿って嵌め込めるように曲がっている。（ｂ）に示されるようにこれらの３本の支持部材３の下端部は、金属粉除去部２の中央位置に中心が来るように曲げられている。また中央の円柱部の長さは短いほど材料流出制御にに効果があり、図３に示すように無くともよい。 (A) of FIG. 1 shows the external shape of the front of the metal powder removal unit 1 of this invention, (b) shows the external shape seen from the C direction of (a). The metal powder removing unit 1 has a surface portion 4 made of a stainless steel material, is smooth and has a conical shape at the upper part of the central cylindrical part, and a lower part of the metal powder removing unit 2 and an anti-conical shape. Three support members 3 made of a round bar made of a material are attached so that the upper part is attached to the cylindrical part, and the lower part is bent so as to be fitted along the inner peripheral wall of the discharge pipe 11 described later. As shown in (b), the lower end portions of these three support members 3 are bent so that the center comes to the center position of the metal powder removing portion 2. Further, the shorter the length of the central cylindrical portion is, the more effective the material outflow control is, and it does not have to be as shown in FIG.

図２は粉粒体を貯留した容器８に金属粉除去ユニット１を設置した時の正面外観図を示す。粉粒体を貯留した上部側部位が略円筒形状とされた直胴部９と、下部側部位が略逆円錐形状とされたテーパー部１０と、テーパー部１０下端部に前記粉粒体を排出する排出管１１とを有する容器８において、テーパー部１０の下部に粉粒体材料用の金属粉除去ユニット１を設置する。支持部材３は金属粉除去部２の中央部の円柱部に取り付けられた丸棒が、テーパー部１０と金属粉除去部２との設計された間隙距離となる位置まで垂下し、その後テーパー部の傾斜に合わせて内側に曲がり、続いて排出管１１の内径に合わせて湾曲させてある。よって支持部材３を排出管１１に差し込むことで、金属粉除去部２とテーパー部１０の空隙を設計値分取ることができ、金属粉除去ユニット１を容器の中央部に設置することができる。 FIG. 2 shows a front external view when the metal powder removing unit 1 is installed in the container 8 storing the granular material. The straight body portion 9 in which the upper side portion storing the granular material is made into a substantially cylindrical shape, the tapered portion 10 in which the lower side portion is made into a substantially inverted conical shape, and the granular material are discharged to the lower end portion of the tapered portion 10. In the container 8 having the discharge pipe 11 to be performed, the metal powder removing unit 1 for the granular material is installed under the tapered portion 10. The support member 3 hangs down to a position where the round bar attached to the cylindrical portion at the center of the metal powder removing portion 2 is the designed gap distance between the taper portion 10 and the metal powder removing portion 2, and then the taper portion It bends inward according to the inclination, and then curved according to the inner diameter of the discharge pipe 11. Therefore, by inserting the support member 3 into the discharge pipe 11, the gap between the metal powder removing unit 2 and the taper unit 10 can be obtained by the design value, and the metal powder removing unit 1 can be installed at the center of the container.

次に動作について図２を用いて述べる。容器８の上部の天蓋１２を開け、混合された材料を投入する。排出管１１から材料が排出され、容器８に収納された粉粒体材料は金属粉除去部２の上部テーパー部の抵抗を受けて、マスフローとなり混合材料が均一に排出管１１から排出される。もしこの金属粉除去ユニットがない場合、混合した材料を、容器８下部から排出する時、排出口の中央部付近の材料が優先的に排出され、その排出された材料を補填するため、上部の材料が中心に向かって水平方向に移動していく流出様態を示すことが知られている。この粉粒体が水平移動する時粉粒体間で摩擦力が働き、流れやすい材料が先に移動し、移動しにくい材料は停滞し、このため混合材料の分離がおこるという問題があった。また金属粉の除去は粉粒体材料が金属粉除去部２とテーパー部１０の狭い空隙を通過することで、ほとんどの材料に付着している金属粉を除去できる。 Next, the operation will be described with reference to FIG. The canopy 12 at the top of the container 8 is opened, and the mixed material is charged. The material is discharged from the discharge pipe 11, and the granular material stored in the container 8 receives the resistance of the upper taper portion of the metal powder removing unit 2, becomes a mass flow, and the mixed material is discharged from the discharge pipe 11 uniformly. If the metal powder removal unit is not provided, when the mixed material is discharged from the lower part of the container 8, the material near the center of the discharge port is discharged preferentially, It is known to exhibit an outflow mode in which the material moves horizontally toward the center. When this granular material moves horizontally, frictional force acts between the granular materials, the material that tends to flow moves first, and the material that does not easily move stagnates, so that the mixed material is separated. Further, the metal powder can be removed by allowing the powder material to pass through the narrow gap between the metal powder removing portion 2 and the taper portion 10 to remove the metal powder adhering to most of the material.

金属粉除去ユニット１の支持部材３に関する変形例を図３と図４に基づき説明する。図３の（b）に示すように金属粉除去部２が中央部の中間部材７がなく上部が円錐形状をなし下部が逆円錐形状をなしたものを中央部で接合している。また支持部材３はステンレスの棒でできており、逆円錐の母線に沿わし固定されており、延長して図４に示す流動ホッパ１４の直胴部である流動ホッパ上部１７とテーパー部である流動ホッパ下部１６との接合部分に支持部材角部１３を設置するように曲げ、且つこの角部から流動ホッパ上部１７の垂直上方に沿わせて流動ホッパ上部１７との摩擦力で金属粉除去部２が流動ホッパ下部１６と空隙を持ち固定される。 The modification regarding the support member 3 of the metal powder removal unit 1 is demonstrated based on FIG. 3 and FIG. As shown in FIG. 3 (b), the metal powder removing portion 2 is joined at the central portion without the intermediate member 7 at the central portion, the upper portion having a conical shape and the lower portion having an inverted conical shape. Further, the support member 3 is made of a stainless steel rod and is fixed along an inverted conical bus bar. The support member 3 is extended to be a fluid hopper upper portion 17 and a taper portion which are a straight body portion of the fluid hopper 14 shown in FIG. The support member corner portion 13 is bent at the joint portion with the fluid hopper lower portion 16, and the metal powder removing portion is caused by frictional force with the fluid hopper upper portion 17 along the vertical upper portion of the fluid hopper upper portion 17 from the corner portion. 2 is fixed with a fluid hopper lower part 16 and a gap.

図４に金属粉除去ユニット１を流動ホッパ１４に設置した時の外形図を示す。流動ホッパ１４は、下部で材料給排出管１５と繋がるテーパー形状をした流動ホッパ下部１６と上部が円柱形状である流動ホッパ上部１７には、材料は通過しないが、粉塵と空気は通過するよう多孔板や網などで構成される分離部１８が設置され、流動ホッパ１４上端にはガスケット１９とともに天蓋２０が設置され、ガスや材料が密封される。この天蓋２０には空気吸引口２１が取り付けられており、図６に示す吸引空気配管３４を通して吸引空気源３３に接続される。一方材料給排出管１５の側部には略水平若しくは斜め方向から導入管２２が接続され、材料給排出管１５の下部は排出口２３がある。排出口２３は排出ダンパ２４に接続され、レベルスイッチ２５を取り付けたガラス管２６に接続され、取付座２７に接続された流動ホッパ１４が構成される。 FIG. 4 shows an external view when the metal powder removing unit 1 is installed in the fluid hopper 14. The fluid hopper 14 has a tapered fluid hopper lower portion 16 connected to the material supply / discharge pipe 15 at the lower portion and a fluid hopper upper portion 17 whose upper portion has a cylindrical shape, so that the material does not pass therethrough but the dust and air pass therethrough. A separation unit 18 composed of a plate or a net is installed, and a canopy 20 is installed together with a gasket 19 at the upper end of the fluid hopper 14 to seal gas and materials. An air suction port 21 is attached to the canopy 20 and is connected to a suction air source 33 through a suction air pipe 34 shown in FIG. On the other hand, an introduction pipe 22 is connected to the side of the material supply / discharge pipe 15 from a substantially horizontal or oblique direction, and a discharge port 23 is provided below the material supply / discharge pipe 15. The discharge port 23 is connected to a discharge damper 24, connected to a glass tube 26 to which a level switch 25 is attached, and a flow hopper 14 connected to an attachment seat 27 is configured.

排出ダンパ２４は取付座２７が密閉構造を取る装置に接続される場合、必須ではなく省略できる場合もある。従来技術である図８に示すようなレベルスイッチ２５を取り付けているガラス管２６は材料給排出管１５と流動ホッパ下部１６の間にあっても良い。 When the mounting seat 27 is connected to a device having a sealed structure, the discharge damper 24 is not essential and may be omitted. A glass tube 26 to which a level switch 25 as shown in FIG. 8 as a prior art is attached may be located between the material supply / discharge tube 15 and the flow hopper lower portion 16.

図５を用いて金属粉除去ユニット１が流動ホッパ１４に設置した場合のシステム例を説明する。粉粒体の流動ホッパ１４は導入管２２に輸送管３１が接続され、輸送管３１を介して1つ以上の原料供給源３２が接続されているとともに空気吸引口２１と吸引空気源３３が吸引吸気配管３４を介して接続されることで、空気吸引力により輸送管３１を通して粉粒体の流動ホッパ１４内に吸引輸送され、気流と共に粉粒体に含まれる微粉や塵埃のみが吸引空気配管３４を通じて搬送され、集塵フィルター３５を通過することで捕集され、空気だけが吸引空気源３３から排出される。 A system example when the metal powder removing unit 1 is installed in the fluid hopper 14 will be described with reference to FIG. The powder hopper 14 has a transport pipe 31 connected to an introduction pipe 22, one or more raw material supply sources 32 connected via the transport pipe 31, and suction of the air suction port 21 and the suction air source 33. By being connected via the intake pipe 34, the air is sucked and transported into the flow hopper 14 of the granular material through the transport pipe 31 by the air suction force, and only the fine powder and dust contained in the granular material together with the air flow are sucked into the suction air pipe 34. And is collected by passing through the dust collection filter 35, and only air is discharged from the suction air source 33.

原料を供給する原料供給源３２として乾燥機３６が供給機A３７を介して、原料タンク３８が供給機B３９を介して輸送管３１に材料が投入され、二次空気取入口４０から取り入れる吸引輸送用空気とともに輸送管３１を介して流動ホッパ１４が流動ホッパ１４の導入管２２に接続されている。供給機A３７はダンパーなどが採用され供給機B３９はダンパーに加えロータリーバルブやスクリューなどが採用される。原料供給源３２に使用される乾燥機３６や原料タンク３８等は２台とは限定されず、１台若しくは３台以上でもよい。原料が単一材料の場合、原材料から粉体や金属粉を除去した材料を必要する場合、例えば合成樹脂成形機４１に空気輸送する時に使用される。または原料供給源３２が複数の未混合原料若しくは混合済み原料を空気輸送し、攪拌混合若しくは再攪拌混合する場合で、例えばプラスチックのリサイクル材混合済み原料を必要とする合成樹脂成形機４１に空気輸送する。 As a raw material supply source 32 for supplying raw materials, a dryer 36 is used for suction transportation through which a material is introduced into a transport pipe 31 via a feeder A 37 and a raw material tank 38 is provided via a feeder B 39 and taken in from a secondary air inlet 40. The flow hopper 14 is connected to the introduction pipe 22 of the flow hopper 14 through the transport pipe 31 together with the air. The feeder A37 employs a damper or the like, and the feeder B39 employs a rotary valve or a screw in addition to the damper. The dryer 36 and the raw material tank 38 used for the raw material supply source 32 are not limited to two, and may be one or three or more. When the raw material is a single material, it is used when a material obtained by removing powder or metal powder from the raw material is required, for example, when pneumatically transported to the synthetic resin molding machine 41. Alternatively, when the raw material supply source 32 pneumatically transports a plurality of unmixed raw materials or mixed raw materials and stir-mixes or re-stir-mixes them, for example, to a synthetic resin molding machine 41 that requires mixed raw materials of plastic recycled materials To do.

上記構成された本実施形態に係わる流動ホッパ１４の動作について説明する。成形材料を使用する合成樹脂成形機４１が稼動し、ガラス管２６内の成形材料が減少し、レベルスイッチ２５が成形材料の要求信号を発すると、排出ダンパー２４が閉じられる。次に原料供給源３２である、乾燥機３６の供給機A３７が設定量成形材料を輸送管３１に排出し、同時に前記原料タンク３８の供給機B３９から同様に設定量材料を輸送管３１に排出する。供給機A３７及び供給機B３９からの材料排出用タイマーが完了信号を出すと、流動混合工程に移り、吸引空気源３３が起動すると原料供給源３２からの成形材料が、二次空気取入口４０から吸引される空気とともに輸送管３１を通じて流動ホッパ１４に導入管２２から吸引輸送される。 The operation of the flow hopper 14 according to this embodiment configured as described above will be described. When the synthetic resin molding machine 41 using the molding material is operated, the molding material in the glass tube 26 is decreased, and the level switch 25 issues a molding material request signal, the discharge damper 24 is closed. Next, the feeder A37 of the dryer 36, which is the raw material supply source 32, discharges the set amount molding material to the transport pipe 31, and simultaneously discharges the set amount material from the feeder B39 of the raw material tank 38 to the transport pipe 31. To do. When the material discharge timers from the feeder A37 and the feeder B39 issue a completion signal, the flow mixing process is started. When the suction air source 33 is activated, the molding material from the raw material supply source 32 is supplied from the secondary air intake port 40. The air is sucked and transported from the introduction pipe 22 to the fluid hopper 14 through the transport pipe 31 together with the sucked air.

導入管２２から入った成形材料と空気は材料給排出管１５を通じて流動ホッパ１４に投入される。投入された成形材料と空気は流動ホッパ下部１６と金属粉除去部２の下部の逆円錐形状により形成された空隙により、空気の流れ抵抗が軽減され上部に流動していく。その金属粉除去部２の下部の逆円錐形状部に接触して材料は静電気を金属粉除去部２に伝達し、同時に金属粉を金属粉除去部２の表面に吸着し、材料から金属粉を除去する。そし形材料は広い空間を有する流動ホッパ上部１７に入ることで風速が失速するので、材料は再び流動ホッパ下部１６に落下し、金属粉除去部２の上部の円錐形状部及び下部の逆円錐形状部に接触し、材料は静電気が除去され金属粉を除去する。成形材料は吸引空気源が稼働している間、導入管２２から吸引されてきた材料は、流動ホッパ上部１７に吸い上げられ流動ホッパ下部１６に落下し、再び吸い上げられる動作を繰り返し攪拌混合される。 The molding material and air that have entered from the introduction pipe 22 are introduced into the fluid hopper 14 through the material supply / discharge pipe 15. The injected molding material and air flow to the upper part by reducing the air flow resistance by the gap formed by the inverted conical shape of the lower part of the flow hopper lower part 16 and the metal powder removing part 2. The material contacts the inverted conical portion at the bottom of the metal powder removing unit 2, and the material transmits static electricity to the metal powder removing unit 2. At the same time, the metal powder is adsorbed on the surface of the metal powder removing unit 2, and the metal powder is removed from the material. Remove. Since the wind speed is stalled by entering the fluidized hopper upper part 17 having a large space, the material falls again to the fluidized hopper lower part 16, and the conical shape part at the upper part and the inverted conical shape at the lower part of the metal powder removing part 2. Touching the part, the material is removed static electricity and metal powder is removed. While the suction air source is in operation, the molding material sucked from the introduction pipe 22 is sucked up by the fluid hopper upper part 17, dropped into the fluid hopper lower part 16, and again sucked up and mixed again.

吸引された空気は分離部１８を通過した微粉や塵埃とともに吸引空気源３３に移動するため、成形材料から微紛や塵埃が除去され、同時に異種材料の場合流動攪拌混合され、材料は均一になり、且つ静電気が除去される。さらに上記のように流動混合中に何度も成形材料が金属粉除去ユニット１に接触することで金属粉が除去される。流動混合のタイマーが完了信号を出すと、排出工程に移り、吸引空気源３３が停止し、混合された成形材料は自重で流動ホッパ下部１６から材料給排出管１５に落下し、排出ダンパー２４が次の成形材料輸送されるまで開かれたまま保持される。合成樹脂成形機４１の成形により樹脂が使用されると成形材料が自重でゆっくり排出される。このとき材料は金属粉除去ユニット１により材料の流れを制御し、材料が全体的に流れるマスフローとなる。且つ静電気を除去することにより流動ホッパ１４内面に材料が付着しなくなり、排出時の材料が安定して供給できるようになる。また金属粉除去ユニット１に付着した金属粉は、金属粉除去ユニット１を手で簡単に取り外し、コンプレッサーエヤーや布などで除去し、流動ホッパ１４や容器８に置くだけで再設置が完了できる。 Since the sucked air moves to the suction air source 33 together with the fine powder and dust that have passed through the separation unit 18, the fine powder and dust are removed from the molding material, and at the same time, in the case of dissimilar materials, the fluid is stirred and mixed, and the material becomes uniform. And static electricity is removed. Further, as described above, the metal powder is removed by the molding material coming into contact with the metal powder removal unit 1 many times during the fluid mixing. When the fluid mixing timer issues a completion signal, the process proceeds to the discharge process, the suction air source 33 stops, the mixed molding material falls by its own weight from the fluid hopper lower part 16 to the material supply / discharge pipe 15, and the discharge damper 24 It is held open until the next molding material is transported. When the resin is used by molding by the synthetic resin molding machine 41, the molding material is slowly discharged by its own weight. At this time, the material controls the flow of the material by the metal powder removing unit 1 and becomes a mass flow in which the material flows as a whole. Further, by removing static electricity, the material does not adhere to the inner surface of the flow hopper 14, and the material at the time of discharge can be supplied stably. Further, the metal powder adhering to the metal powder removing unit 1 can be re-installed by simply removing the metal powder removing unit 1 by hand, removing it with a compressor air or cloth, and placing it on the fluid hopper 14 or the container 8.

図６に流動ホッパの変形例を示す。流動ホッパ下部1６の下端部はフランジ上部４８と材料給排出管内筒４９が付設され、その材料給排出管内筒４９に空隙を持って覆うように材料給排出管外筒５０上端にフランジ下部５１が付設され、材料給排出管外筒５０の側面に空気と材料が導入される導入管５２が略水平に接続されている。これらをフランジ上部４８とフランジ下部５１を接合することで一体化する。その他の構成は図５と同様であるので省略する。尚導入管２２は略水平としたが、下向き斜め若しくは上向き斜め方向としても良い。 FIG. 6 shows a modification of the fluid hopper. The lower end portion of the flow hopper lower portion 16 is provided with a flange upper portion 48 and a material supply / discharge tube inner tube 49, and a flange lower portion 51 is formed at the upper end of the material supply / discharge tube outer tube 50 so as to cover the material supply / discharge tube inner tube 49 with a gap. An introduction pipe 52 through which air and material are introduced is connected substantially horizontally to the side surface of the material supply / discharge pipe outer cylinder 50. These are integrated by joining the flange upper part 48 and the flange lower part 51. Other configurations are the same as those in FIG. Although the introduction pipe 22 is substantially horizontal, it may be inclined downward or obliquely upward.

以上のように本発明にかかわる金属粉除去ユニット１は、シンプルな構造で、かつ未混合や、再混合の原料からの金属粉除去や良好な静電気除去と排出制御で、プラスチック材料、医薬食品などの粉粒体の貯蔵容器からの排出時に利用できる。 As described above, the metal powder removal unit 1 according to the present invention has a simple structure, and is free of metal powder from unmixed and remixed raw materials, and excellent static electricity removal and discharge control. It can be used when discharging powder from the storage container.

１ 金属粉除去ユニット
２ 金属粉除去部
３ 支持部材
４ 表面部
５ 磁石
６ ヨーク
７ 中間部材
８ 容器
９ 直胴部
１０ テーパー部
１１ 排出管
１２ 天蓋
１４ 流動ホッパ
１５ 材料給排出管
１６ 流動ホッパ下部
１７ 流動ホッパ上部
１８ 分離部
１９ ガスケット
２０ 天蓋
２１ 空気吸引口
２２ 導入管
２３ 排出口
２５ レベルスイッチ DESCRIPTION OF SYMBOLS 1 Metal powder removal unit 2 Metal powder removal part 3 Support member 4 Surface part 5 Magnet 6 Yoke 7 Intermediate member 8 Container 9 Straight body part 10 Tapered part 11 Discharge pipe 12 Canopy 14 Fluid hopper 15 Material supply / discharge pipe 16 Fluid hopper lower part 17 Flow hopper upper part 18 Separating part 19 Gasket 20 Canopy 21 Air suction port 22 Introducing pipe 23 Discharge port 25 Level switch

Claims (4)

粉粒体を貯留した上部側部位が略円筒形状とされた直胴部と、下部側部位が略逆円錐形状とされたテーパー部と、前記テーパー部下端部に前記粉粒体を排出する排出管とを有する容器において、前記テーパー部に設置した、表面が上部に円錐形状をし、下部に逆円錐形状をしたものを合わせ一体とした導電性物質で弱磁性体若しくは非磁性体で構成され、内部に磁石を収納した金属粉除去部と、前記テーパー部との空隙を得るための導電性物質の支持部材とで構成している粉粒体材料用の金属粉除去ユニット。 A straight body portion in which the upper side portion storing the granular material is made into a substantially cylindrical shape, a tapered portion in which the lower side portion is made into a substantially inverted conical shape, and discharge that discharges the granular material to the lower end portion of the tapered portion. In a container having a tube, it is composed of a weak magnetic body or a non-magnetic body made of a conductive material that is integrated with a conical shape on the upper surface and an inverted conical shape on the lower surface, which is installed in the tapered portion. A metal powder removing unit for a granular material comprising a metal powder removing portion containing a magnet therein and a conductive material support member for obtaining a gap between the tapered portion. 前記金属粉除去ユニットは導電性素材からなる前記容器に導電性素材で構成される前記金属粉除去部の表面部と前述支持部材を通じて電気的に接続され、前記粉粒体で発生した静電気を、前記金属粉除去ユニットと前記容器に接触することで移動させ、静電気を外部に放出する構造とすることを特徴とする請求項1記載の前記粉粒体材料用の金属粉除去ユニット。 The metal powder removal unit is electrically connected to the container made of a conductive material through the support member and the surface portion of the metal powder removal unit made of a conductive material, and the static electricity generated in the granular material, 2. The metal powder removing unit for the granular material according to claim 1, wherein the metal powder removing unit is configured to be moved by contacting the metal powder removing unit and the container to discharge static electricity to the outside. 前記容器は下部が略逆円錐形状とされた前記テーパー部下端部に排出管を設け、前記排出管の側面に空気輸送される粉粒体材料を受け入れる導入管を設け、前記容器上部の直動部の上端部に空気吸引口か設置されている天蓋と、輸送空気から粉粒体材料を分離させる分離部とが設置されている、粉粒体の流動装置であって、前記流動ホッパ下部のテーパー部に設置することを特徴とする請求項1乃至２記載の前記粉粒体材料用の金属粉除去ユニット。 The container is provided with a discharge pipe at the lower end of the tapered part whose lower part has a substantially inverted conical shape, and is provided with an introduction pipe for receiving the granular material transported by air on the side surface of the discharge pipe. A flow device for a granular material, wherein a canopy provided with an air suction port at the upper end of the unit and a separation unit for separating the granular material from the transport air, 3. The metal powder removing unit for powder material according to claim 1, wherein the metal powder removing unit is installed in a tapered portion. 前記容器は下部が略逆円錐形状とされたテーパー部下端部に排出管を設け、前記排出管と一定の間隙を持つように外側に同心円状に前記排出管より長い接続管を設け、前記接続管の側面に空気輸送される粉粒体材料を受け入れる導入管を設け、前記容器の直胴部上端部に空気吸引口か設置されている天蓋と、輸送空気から粉粒体材料を分離させる分離部とが設置されている、粉粒体の流動装置であって、前記流動ホッパ下部のテーパ部に設置することを特徴とする請求項1乃至２記載の前記粉粒体材料用の金属粉除去ユニット。 The container is provided with a discharge pipe at the lower end of a tapered portion having a substantially inverted conical lower portion, and a connection pipe longer than the discharge pipe is provided concentrically on the outside so as to have a certain gap with the discharge pipe. An inlet pipe that accepts air-carrying granular material is provided on the side of the pipe, and a canopy in which an air suction port is installed at the upper end of the straight body of the container, and separation that separates the granular material from the transportation air 3. The powder powder removing apparatus for a granular material according to claim 1, wherein the powder powder flow device is installed in a tapered portion at a lower portion of the fluid hopper. unit.
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CN108554289A (en) * 2018-03-30 2018-09-21 川田机械制造(上海)有限公司 A kind of mixing storage hopper
CN109368292A (en) * 2018-12-20 2019-02-22 李小会 It is a kind of severe toxicity industrial chemicals put on by classification device
CN112318706A (en) * 2020-10-10 2021-02-05 丽水学院 Raw material mixing device for porcelain production

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CN108554289A (en) * 2018-03-30 2018-09-21 川田机械制造(上海)有限公司 A kind of mixing storage hopper
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CN112318706A (en) * 2020-10-10 2021-02-05 丽水学院 Raw material mixing device for porcelain production

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