JP2001212764A - Recovery method of used grinding material and device thereof - Google Patents
Recovery method of used grinding material and device thereofInfo
- Publication number
- JP2001212764A JP2001212764A JP2000023986A JP2000023986A JP2001212764A JP 2001212764 A JP2001212764 A JP 2001212764A JP 2000023986 A JP2000023986 A JP 2000023986A JP 2000023986 A JP2000023986 A JP 2000023986A JP 2001212764 A JP2001212764 A JP 2001212764A
- Authority
- JP
- Japan
- Prior art keywords
- sieve
- falling
- tank
- collecting used
- collecting
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Landscapes
- Combined Means For Separation Of Solids (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、ブラスト処理の
後に、研掃材とともに収集される、ワーク表面の発錆
物、塗膜等の被研物質の他、粉化研掃材等の塵芥をも含
む被処理物から、再使用可能な研掃材を分離して回収す
る、使用済み研掃材の回収方法およびそれに用いる回収
装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for removing dusts such as rusting substances and coatings on a work surface, and dusts such as powdered abrasives, which are collected together with the abrasives after blasting. The present invention relates to a method for recovering used abrasives and a recovery apparatus used for separating and recovering reusable abrasives from an object to be processed, which includes the same.
【０００２】[0002]
【従来の技術】ブラスト処理に用いた研掃材を再使用に
供することを目的に、被処理物から研掃材を分離して回
収することは従来から一般的に行われており、その場
合、粒径による選別と比重による選別とを併用すること
もまた広く行われている。2. Description of the Related Art In order to reuse abrasives used for blasting, it has conventionally been common practice to separate and collect abrasives from an object to be treated. It is also widely practiced to use a combination of sorting by particle size and sorting by specific gravity.
【０００３】[0003]
【発明が解決しようとする課題】しかるに、粒径による
選別と比重による選別とを相互に分離して行う従来技術
および、それら両者を同時に行う従来技術のいずれにあ
っても、研掃材の分離効率が低く、分離回収した研掃材
中に被研物質等が比較的多量に混在したり、被処理物か
ら分離除去した粗大異物中に再使用可能な研掃材が比較
的多量に混在したりすることが多いという問題があっ
た。そこでこの発明は、粒径に基く篩選別精度、比重お
よび粒径に基く風選選別精度のそれぞれをともに有効に
向上させ、併せて、研掃材の分離効率を大きく向上させ
た使用済み研掃材の回収方法および装置を提供する。However, in both of the prior art in which the separation based on the particle size and the selection based on the specific gravity are separated from each other, and the prior art in which both are simultaneously performed, the separation of the abrasive material is performed. Efficiency is low, and relatively large amounts of the substances to be polished are mixed in the separated and collected blasting materials, and relatively large amounts of reusable blasting materials are mixed in the large foreign substances separated and removed from the material to be treated. There was a problem that often. Accordingly, the present invention provides a used blasting system that effectively improves both the sieving classification accuracy based on the particle size, the air gravitational classification accuracy based on the specific gravity and the particle size, and greatly improves the separation efficiency of the blasting material. Provided are a method and an apparatus for collecting materials.
【０００４】[0004]
【課題を解決するための手段】この発明の、使用済み研
掃材の回収方法は、使用済みの研掃材および被研物質を
含む被処理物を、篩目を形成した角筒状、たとえば六角
筒状の篩胴の回転下で篩分けして粗大異物を分離除去し
た後、篩目を通過した残りの被処理物を、落下厚み、幅
等の落下形態の調整下で、薄層状にむらなく落下させつ
つ風選して、再使用可能な研掃材を回収ホッパに落下さ
せる一方、飛散分離された低比重の異物や微粉化した粒
子を集塵装置で捕集することにある。According to the present invention, there is provided a method for recovering a used abrasive material, comprising the steps of converting a used abrasive material and an object to be treated into a rectangular tube having a sieve mesh, for example, After sieving under the rotation of a hexagonal cylindrical sieve cylinder to separate and remove coarse foreign substances, the remaining workpieces that have passed through the sieve are formed into a thin layer under the adjustment of the drop form such as drop thickness and width. The purpose of the present invention is to select a reusable blasting material into a collecting hopper by wind-selection while dropping it evenly, and to collect the scattered and separated low-specific-gravity foreign substances and finely divided particles by a dust collecting device.
【０００５】この発明では、角筒状の篩胴をもって被処
理物を篩分けすることで、円筒状の篩胴を用いる場合に
比し、多量の被処理物に対する篩選別精度を大きく向上
させて篩胴の径方法を小さくするとともに、その長さを
短かくできる他、篩効率をもまた大きく向上させること
ができる。According to the present invention, the object to be processed is sieved with a rectangular cylindrical sieve cylinder, thereby greatly improving the screening accuracy for a large number of objects to be processed as compared with the case of using a cylindrical sieve cylinder. In addition to reducing the diameter method of the sieve cylinder, the length thereof can be shortened, and the sieve efficiency can also be greatly improved.
【０００６】すなわち、円筒状の篩胴に多量の被処理物
を供給した場合には、篩胴の底部に被処理物が厚く堆積
することになり、これにより、堆積した被処理物の上部
に浮遊等する小径粒子が適正に分級されることなく、大
径粒子とともに分級される比率が多くなるため、篩選別
精度の向上のためには、篩胴の径寸法を大きくすること
および長さを長くすることが必要となる。この結果とし
て、篩効率の低下が余儀なくされるところ、角筒状の篩
胴を用いる場合には、供給された被処理物は、篩胴の角
部を通過する度毎に撹拌混在されることになり、各粒子
の篩面との接触の機会が大きく増加することになるの
で、篩選別精度と併せて篩効率を効果的に向上させるこ
とができる。特に、ショット形状 (球形状) の研掃材を
使用した場合、研掃材粒子の流動性が高いため、堆積被
処理物の上部で滑り現象が生じやすいので、本発明にお
ける角筒状の篩筒が篩効率を高める上で効果的に作用す
る。That is, when a large amount of the object to be processed is supplied to the cylindrical sieve cylinder, the object to be processed is thickly deposited on the bottom of the sieve cylinder. Since the ratio of small particles that float and the like are not properly classified and classified together with the large particles increases, in order to improve the screening accuracy, the diameter of the sieve cylinder and the length must be increased. It is necessary to make it longer. As a result, when the reduction of the sieve efficiency is inevitable, when the rectangular cylindrical sieve drum is used, the supplied processing object is stirred and mixed every time it passes through the corner of the sieve drum. And the chance of contact of each particle with the sieve surface is greatly increased, so that the sieve efficiency can be effectively improved together with the sieve sorting accuracy. In particular, when a shot-shaped (spherical) blasting material is used, since the blasting material particles have a high fluidity, a slip phenomenon easily occurs at the upper portion of the material to be deposited. The tube works effectively to increase the sieve efficiency.
【０００７】またここで、篩目を通過した被処理物の落
下厚み、幅等の調整下で、それを薄層状にむらなく落下
させながら風選することにより、落下する被処理物の全
てに十分均等に風を当てることができるので、風選選別
精度をもまた大きく向上させることができる。[0007] Here, by adjusting the thickness, width, etc., of the object to be processed that has passed through the sieve, it is air-selected while dropping it uniformly in a thin layer, so that all of the objects to be dropped are removed. Since the wind can be applied sufficiently evenly, the wind selection accuracy can be greatly improved.
【０００８】この発明の、使用済み研掃材の回収装置
は、使用済みの研掃材および被研物質を含む被処理物か
ら再使用可能な研掃材を分離回収するものであり、角筒
形状の篩胴および、この篩胴の回転駆動手段を設け、篩
目通過物の流下を案内するとともに、その篩目通過物の
落下形態を調整する流下槽を篩胴の下方に配設し、流下
槽から落下する篩目通過物に対するエアブロー手段を設
けるとともに、エアブロー手段を経て落下する研掃材の
回収ホッパおよび、飛散分離された異物や微粉化粒子の
集塵装置を設けたものである。なお、前記篩胴は、図示
のような直胴タイプのものだけでなく、胴径の大きさが
被処理物の軸方向の入側から出側に向かって漸増するよ
うに形成された角筒状のもの、即ち、篩胴の被処理物入
口寸法よりも出口寸法を拡径させて篩胴を、いわゆるラ
ッパ型の形状としたものであってもよい。The apparatus for collecting used abrasive material according to the present invention separates and collects a reusable abrasive material from an object to be treated containing a used abrasive material and a substance to be studied. A sieve body having a shape and a rotation driving means for the sieve body are provided, and a flow-down tank for adjusting the falling form of the sieve passing object is arranged below the sieve body while guiding the flow of the sieve passing object, In addition to the provision of an air blowing means for passing through the sieves falling from the falling tank, a collection hopper for the abrasive material falling through the air blowing means and a dust collecting device for foreign matter and finely divided particles separated and scattered are provided. The sieve cylinder is not only a straight cylinder type as shown in the figure, but also a square cylinder formed such that the diameter of the cylinder gradually increases from the entry side to the exit side in the axial direction of the workpiece. In other words, the sieve body may have a so-called trumpet shape by enlarging the outlet dimension of the sieve cylinder from the inlet dimension of the workpiece.
【０００９】この装置では、回転駆動手段によって回転
される角筒形状の篩胴に、その一端側から供給された被
処理物は、篩胴の角部によって撹拌混合されて篩面に十
分に接触しつつ他端側へ流下する間に、たとえば大小二
種類の篩目を粒径に応じて通過し、いずれの篩目にも通
過しない粗大異物は篩胴の他端から排出分離されること
になる。In this apparatus, an object to be processed supplied from one end of the rectangular cylindrical sieve drum rotated by the rotary driving means is stirred and mixed by the corner of the sieve drum, and sufficiently contacts the sieve surface. While flowing down to the other end side, coarse foreign substances that pass through, for example, two types of large and small sieves according to the particle size and do not pass through any of the sieves are discharged and separated from the other end of the sieve body. Become.
【００１０】ここで、篩胴の一端側に供給された被処理
物の、それの他端側への流下を所期した通りに行わせる
ためには、篩胴の内周面に、それの回転方向に応じた向
きで延在する螺旋突条を所要の螺旋ピッチで設けること
および、篩胴それ自体を、被処理物の供給側から他端側
に向けて下向きに傾斜させることの少なくとも一方を選
択することが好ましい。[0010] Here, in order to cause the processed material supplied to one end of the sieve cylinder to flow down to the other end thereof as expected, the inner peripheral surface of the sieve cylinder must have At least one of providing a spiral ridge extending in a direction corresponding to the rotation direction at a required spiral pitch, and inclining the sieve cylinder itself downward from the supply side of the workpiece to the other end side. It is preferable to select
【００１１】篩目の通過物は、たとえば粒径毎に設ける
こともできる流下槽の傾斜ガイド面に案内されて流下す
るとともに、その傾斜ガイド面の下端に設けた堰板によ
って、落下厚み、幅等の落下形態および落下速度を調整
されて、その流下槽から薄層状にむらなく落下する。[0011] The passing material of the sieve is guided by, for example, an inclined guide surface of a falling tank, which can be provided for each particle size, and flows down. The fall thickness and width are reduced by a weir plate provided at the lower end of the inclined guide surface. The falling form and the falling speed are adjusted so that it falls uniformly from the falling tank in a thin layer.
【００１２】その後は、その篩目通過物に、エアブロー
手段、たとえば、ブロアに接続したエアブローノズルか
ら噴出したエアを均等に吹付け、噴出エアに吹き飛ばさ
れた低比重の異物や微粉化した粒子を集塵装置に捕集す
る一方、エアに吹き飛ばされることなく落下した大比重
の研掃材を回収ホッパに捕集して再度の使用を可能とす
る。ところで、篩目落下物のこのような風選に当り、た
とえば、小さい篩目から落下した通過物については、風
選を施すことなく直ちに集塵装置に流入させることも可
能である。Thereafter, air blown from an air blow means, for example, an air blow nozzle connected to a blower, is evenly blown to the material having passed through the sieve, so that low-specific-gravity foreign matter and finely-divided particles blown by the blown air are blown. While being collected by the dust collecting device, the abrasive material having a large specific gravity that has fallen without being blown off by the air is collected by a collection hopper so that it can be reused. By the way, in such a wind screening of the falling objects of the sieve, for example, a passing object dropped from a small sieve can be immediately flown into the dust collecting device without performing the wind screening.
【００１３】なお、上記エアブローノズルは、たとえ
ば、先端を閉止したチューブの周方向の一個所で、同径
の小孔を所定のピッチで直線状に形成することによって
構成できる他、とくに、大小複数種類の粒径の通過物の
風選に当っては、小径通過物に当たる風量を少なく、大
径通過物に当たる風量を多くするべく、小孔径を一方か
ら他方に向けて次第に大きくもしくは小さくすること、
または、小孔に代えて設けたスリットの開口幅を同様に
変化させることによってもまた構成することができる。The air blow nozzle can be formed by forming small holes of the same diameter in a straight line at a predetermined pitch at one location in the circumferential direction of the tube whose end is closed. In the wind selection of the passing material having different particle diameters, the small hole diameter is gradually increased or decreased from one side to the other in order to reduce the air volume hitting the small diameter passing object and increase the air volume hitting the large diameter passing object,
Alternatively, it can also be configured by similarly changing the opening width of the slit provided in place of the small hole.
【００１４】以上のような装置において、篩胴への、被
処理物の定常的な供給のためには、その内側へ被処理物
を搬入するスクリューコンベアを設けることが好まし
く、また、そのスクリューコンベアの駆動手段を、篩胴
の回転駆動手段に共用することが、設備コストの上で有
利である。さらに、スクリューコンベアに被処理物を装
入するバケットエレベータを設けた場合には、装入工数
を大きく低減させることができる。In the apparatus as described above, it is preferable to provide a screw conveyor for carrying the object to be processed into the sieve cylinder in order to constantly supply the object to the sieve cylinder. It is advantageous in terms of equipment cost to share the above-mentioned drive means with the rotary drive means of the sieve cylinder. Further, when a bucket elevator for charging the object to be processed is provided in the screw conveyor, the number of charging steps can be significantly reduced.
【００１５】そしてまた好ましくは、流下槽の下端部に
落下量調節弁を設け、これにより、落下厚み、幅および
落下速度のより適正な調整を可能とし、さらに好ましく
は、流下槽の傾斜ガイド面に、下方に向けて高さが漸増
する、たとえば正面形状が山形をなす突起を設け、これ
により、篩目通過物の、篩胴からの落下エネルギーを吸
収して、流化槽からの落下速度を低減させるとともに、
篩目通過物の衝突飛散によって、流下槽の幅方向での分
散率を高める。[0015] Also, preferably, a falling amount control valve is provided at the lower end of the falling tank, thereby enabling more appropriate adjustment of the falling thickness, width and falling speed. More preferably, the inclined guide surface of the falling tank is provided. Is provided with a projection whose height gradually increases downward, for example, a front shape is formed into a mountain shape, thereby absorbing the falling energy of the sieve mesh from the sieve body and dropping speed from the fluidizing tank. While reducing
The dispersion ratio in the width direction of the falling tank is increased by the collision and scattering of the sieve mesh.
【００１６】なおここで、流下槽は、その槽底板を、好
ましくは板面に垂直な上下方向に微振動させる槽底板振
動装置を設けてなり、これにより、その槽底板を、たと
えば微小振幅で振動させた場合に、篩下粉 (篩目通過
物) の、該流下槽への滞留を防止してより円滑な流下を
実現することができる。即ち、槽底板を振動させると、
篩目通過物は槽底板の傾斜角度の如何にかかわらず常に
スムースに流下することになる。Here, the falling tank is provided with a tank bottom plate vibrating device for finely vibrating the tank bottom plate preferably in a vertical direction perpendicular to the plate surface. When vibrated, it is possible to prevent sifting powder (penetrating through the sieve) from staying in the downflow tank and realize smoother downflow. That is, when the tank bottom plate is vibrated,
The sieved material always flows down smoothly regardless of the inclination angle of the tank bottom plate.
【００１７】[0017]
【発明の実施の形態】以下にこの発明の実施の形態を図
面に示すところに基いて説明する。図１はこの発明に係
る装置の実施形態を示す正面図であり、図２は、図１に
示す装置の選別部の略線断面図である。被処理物を選別
部へ装入するバケットエレベータ１を設けた場合につい
て示すこの装置において、２は篩胴を、３はその篩胴２
の一端側へ被処理物を供給するスクリューコンベアをそ
れぞれ示す。ここでは水平姿勢に配設した篩胴２は六角
筒形状をなし、その周面の全長にわたって形成した篩目
は、たとえば、被処理物の入側が小径で、出側が大径寸
法となる、２〜３種に段階的に変わるもの、もしくは無
段階に変わる篩目寸法を有する。このような篩胴２の内
周面には、被処理物の送給を円滑ならしめるべく、所要
の向きに所要のピッチで螺旋状に延在する螺旋突条４を
設ける。ここで、この螺旋突条４の突出高さは、被処理
物の供給量等との関連の下で適宜に選択することができ
る。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing an embodiment of the apparatus according to the present invention, and FIG. 2 is a schematic sectional view of a sorting section of the apparatus shown in FIG. In this apparatus, which shows a case where a bucket elevator 1 for charging an object to be processed into a sorting section is provided, 2 is a sieve cylinder, and 3 is a sieve cylinder 2 thereof.
The screw conveyor which supplies a to-be-processed object to one end side of each is shown. Here, the sieve cylinder 2 arranged in a horizontal posture has a hexagonal cylindrical shape, and the sieve mesh formed over the entire length of the peripheral surface has, for example, a small diameter on the entrance side of the object to be treated and a large diameter on the exit side. It has a sieve size that changes step by step or changes steplessly. A spiral ridge 4 is provided on the inner peripheral surface of such a sieve cylinder 2 so as to spirally extend in a required direction at a required pitch in order to smoothly feed the object to be processed. Here, the projecting height of the spiral ridge 4 can be appropriately selected in relation to the supply amount of the workpiece.
【００１８】またここでは、篩胴２の中心軸５を、スク
リューコンベア３のコンベア軸に共用することで、一の
回転駆動手段６をもって篩胴２とスクリューコンベア３
との同期した回転を可能ならしめる。さらに、篩胴２の
下方位置に、図２に示すところから明らかなように、傾
斜ガイド面７をもって篩目通過物の流下を案内する流下
槽８を配設し、その傾斜ガイド面７、ひいては流下槽８
の下端に、篩目通過物のそこからの落下形態を調整す
る、例えばゴム板からなる弾性堰板９を設ける。また、
流下槽８の下端部には、篩目通過物の、そこからの落下
量を、たとえばマニュアル操作をもってコントロールす
る落下量調節弁10を設け、そして傾斜ガイド面７には、
下方に向けて高さが漸増する、正面形状が山形の突部11
を、たとえば上下方向および幅方向のそれぞれに間隔を
おいて設ける。In this case, the center shaft 5 of the sieve drum 2 is shared with the conveyor shaft of the screw conveyor 3, so that one rotation driving means 6 allows the sieve drum 2 and the screw conveyor 3 to rotate.
Enables synchronized rotation with. As shown in FIG. 2, a falling tank 8 is provided below the sieve cylinder 2 with an inclined guide surface 7 for guiding the flow of the sieve-passing material, and the inclined guide surface 7, Downflow tank 8
An elastic barrier plate 9 made of, for example, a rubber plate is provided at the lower end of the plate to adjust the form of falling of the material passing through the sieve. Also,
At the lower end of the falling tank 8, there is provided a falling amount control valve 10 for controlling, for example, a manual operation of a falling amount of the passing material therethrough.
Projection 11 with a frontal shape that gradually increases in height downwards
Are provided at intervals in the vertical direction and the width direction, for example.
【００１９】そしてまた、流下槽８の下方位置に、ブロ
ア12に連通されて、流下槽８から薄層状に落下する篩目
通過物に風選を施すエアブローノズル13を、エア噴口が
その篩目通過物に向く姿勢で配設する。ここで、エア噴
口は、先端を閉止したチューブに、複数個の小孔もしく
はスリットをもって形成し得る他、一端から他端もしく
はその近傍まで連続する一のスリットをもって形成する
ことができ、この場合、小孔径およびスリット幅は、粒
径その他に応じてチューブの一端から他端に向けて適宜
に増減させることもできる。Further, an air blow nozzle 13 is provided below the falling tank 8 to select the air passing through the sieve that is communicated with the blower 12 and falls from the falling tank 8 in a thin layer. Arrange in a position facing passing objects. Here, the air injection port can be formed with a plurality of small holes or slits in a tube whose end is closed, or can be formed with one slit continuous from one end to the other end or its vicinity. In this case, The small hole diameter and the slit width can be appropriately increased or decreased from one end of the tube to the other end according to the particle diameter or the like.
【００２０】エアブロー手段としてのこのようなエアブ
ローノズル13を通過して、そこからの噴出エアに吹き飛
ばされることなく落下した研掃材は、それの回収ホッ
パ、図１に示すところでは小粒回収ホッパ14および大粒
回収ホッパ15のそれぞれに回収されて、その後の、所要
に応じた再使用を待機する一方、噴出エアに吹き飛ばさ
れた低比重の異物や微粉化した粒子は集塵装置に吸引捕
集され、たとえばサイクロンによって気流から分離され
ることになる。なお、図１中16は、篩胴２の他端側に開
口する粗大異物排出通路を示す。The abrasive material that has passed through such an air blow nozzle 13 as an air blow means and has been dropped without being blown off by the jet air from the air blow nozzle 13 is collected in a hopper for collecting the blasted material, as shown in FIG. And the large-grain collection hopper 15 are then collected and wait for re-use as necessary, while the low-specific-gravity foreign matter and the finely-divided particles blown off by the jet air are suctioned and collected by the dust collection device. , For example, by a cyclone. In FIG. 1, reference numeral 16 denotes a coarse foreign matter discharge passage which is opened at the other end of the sieve drum 2.
【００２１】以上のように構成してなる装置では、ブラ
スト処理の後に、研掃材とともに収集される、ワーク表
面発錆物、塗膜等の被研物質および、粉化研掃材等の塵
芥をも含む被処理物を、バケットエレベータ１からスク
リューコンベア３を経て篩胴２へ供給することにより、
その被処理物は、篩胴２の回転運動の下に、撹拌混合さ
れつつ、精度よく、しかも効率よく、粒径に応じて分級
選別され、分離された粗大異物は篩胴の他端から、粗大
異物排出通路16を経て排出される。In the apparatus constructed as described above, after the blast treatment, the rusted material on the work surface, the substance to be polished such as a coating film, and the dust such as the powdered blast cleaning material etc. are collected together with the blasting material. Is supplied from the bucket elevator 1 to the sieve cylinder 2 via the screw conveyor 3,
The object to be treated is classified and sorted accurately and efficiently according to the particle size while being stirred and mixed under the rotational movement of the sieve cylinder 2, and the separated coarse foreign matter is separated from the other end of the sieve cylinder, It is discharged through the coarse foreign matter discharge passage 16.
【００２２】この一方で、複数種類の篩目を通過したそ
れぞれの篩目通過物は、流下槽８の傾斜ガイド面７上
を、突起11および流下量調節弁10によって、流速、流
量、分散態様等を調整されつつその下端まで流下し、さ
らに、堰板９をもって、落下厚み、幅等の落下形態およ
び落下速度を調整されて、そこから薄層状にむらなく落
下する。On the other hand, each of the materials having passed through the plurality of types of sieves on the inclined guide surface 7 of the flow-down tank 8 is flow-velocity, flow-rate, and dispersion mode by the projections 11 and the flow-down regulating valve 10. After falling down to the lower end thereof while being adjusted, the falling form and the falling speed such as the thickness and width of the fall are adjusted by the weir plate 9 and the water falls uniformly from the thin plate into a thin layer.
【００２３】その後、それらの篩目通過物は、前述した
ように、エアブローノズル13からの噴出エアにより、上
記落下形態の下に、すぐれた精度で風選され、再使用可
能な研掃材はそれぞれの回収ホッパ14、15に落下し、低
比重の異物や微粉化した粒子は、集塵装置で分離回収さ
れる。After that, as described above, the sieved material is selected by the air blown from the air blow nozzle 13 under the above-mentioned falling mode with excellent accuracy, and the reusable abrasive is Foreign matter having a low specific gravity and finely divided particles which fall into the respective collection hoppers 14 and 15 are separated and collected by a dust collector.
【００２４】[0024]
【発明の効果】かくしてこの発明によれば、角筒状の篩
胴によって被処理物を撹拌混合しながら粒径選別するこ
とで、選別精度および選別効果をともに大きく向上させ
ることができ、また、篩目通過物の、流下槽から落下形
態を、とくには堰板の作用の下に、たとえば広幅の薄層
状に、しかも、むらなく均一に調整することで、風選精
度をも大きく向上させることができるので、研掃材の回
収効率が高まることはもちろん、回収された研掃材への
異物の混入率が十分に低減されることになる。As described above, according to the present invention, both the sorting accuracy and the sorting effect can be greatly improved by selecting the particle size while stirring and mixing the objects to be processed by the rectangular cylindrical sieve cylinder. The accuracy of wind selection can be greatly improved by adjusting the form of falling of the sieve mesh from the falling tank, especially under the action of a weir plate, for example, in a wide thin layer, and evenly. As a result, not only the recovery efficiency of the abrasive material is improved, but also the mixing ratio of foreign matter into the recovered abrasive material is sufficiently reduced.
【図１】この発明に係る装置の実施の形態を示す正面図
である。FIG. 1 is a front view showing an embodiment of a device according to the present invention.
【図２】図１に示す装置の選別部の略線断面図である。FIG. 2 is a schematic sectional view of a sorting unit of the apparatus shown in FIG.
１ バケットエレベータ ２ 篩胴 ３ スクリューコンベア ４ 螺旋突条 ５ 中心軸 ６ 回転駆動手段 ７ 傾斜ガイド面 ８ 流下槽 ９ 弾性堰板 10 落下量調節弁 11 突部 12 ブロア 13 エアブローノズル 14 小粒回収ホッパ 15 大粒回収ホッパ 16 粗大異物排出通路 DESCRIPTION OF SYMBOLS 1 Bucket elevator 2 Sieve cylinder 3 Screw conveyor 4 Spiral ridge 5 Center axis 6 Rotation drive means 7 Inclined guide surface 8 Falling tank 9 Elastic weir plate 10 Fall amount control valve 11 Projection part 12 Blower 13 Air blow nozzle 14 Small particle collection hopper 15 Large particles Collection hopper 16 Large foreign matter discharge passage
───────────────────────────────────────────────────── フロントページの続き (72)発明者 厚地 巌 大阪府門真市大字三ツ島1140−２ 厚地鉄 工株式会社内 (72)発明者 厚地 章 千葉県千葉市中央区宮崎１−18−30 厚地 鉄工株式会社関東アスコン内 (72)発明者 富永 克彦 富山県高岡市吉久１−１−145 日重建設 株式会社北陸支社内 (72)発明者 柴田 守 東京都中央区日本橋人形町１−７−10 日 重ニューマテリアル株式会社内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Iwao Atsuji 1140-2 Mitsushima, Kazuma, Osaka Prefecture Atsushi Tekko Co., Ltd. (72) Inventor Akira Atsuchi 1-18-30 Miyazaki, Chuo-ku, Chiba-shi, Chiba Inside Kanto Ascon Co., Ltd. (72) Katsuhiko Tominaga, Inventor 1-1145 Yoshihisa, Takaoka City, Toyama Pref. Shige New Materials Co., Ltd.
Claims (11)
被処理物を角筒状の篩胴の回転下で篩分けして粗大異物
を分離除去した後、篩目を通過した残りの被処理物を薄
層状にむらなく落下させつつ風選して、再使用可能な研
掃材を回収ホッパに落下させる一方、飛散分離された低
比重の異物や微粉化した粒子を集塵装置で捕集する、使
用済み研掃材の回収方法。An object to be treated including a used abrasive material and a substance to be polished is sieved under rotation of a rectangular cylindrical sieve cylinder to separate and remove coarse foreign substances, and the remaining material that has passed through the sieve is sieved. The reprocessing material is dropped into the collection hopper by wind-selection while uniformly dropping the object to be treated into a thin layer, and the scattered and separated low-specific-gravity foreign matter and finely-divided particles are collected by a dust collector. How to collect used abrasives.
被処理物から再使用可能な研掃材を分離回収するもので
あり、 角筒形状の篩胴および、この篩胴の回転駆動手段を設
け、篩目通過物の流下を案内するとともに、その篩目通
過物の落下形態を調整する流下槽を篩胴の下方に配設
し、流下槽から落下する篩目通過物に対するエアブロー
手段を設けるとともに、エアブロー手段を経て落下する
研掃材の回収ホッパおよび、飛散分離された異物や微粉
化粒子の集塵装置を設けてなる使用済み研掃材の回収装
置。2. A method for separating and recovering a reusable blasting material from a used blasting material and an object to be polished, including a substance to be polished. Means are provided to guide the flow of the passing material through the sieve, and a falling tank for adjusting the falling form of the passing material of the sieve is disposed below the sieve body, and air blowing means for the passing material falling from the falling tank. And a collection device for collecting used abrasives, which is provided with a collection hopper for the abrasives falling through the air blow means and a dust collecting device for foreign matter and finely divided particles separated and separated.
から他端側に向けて次第に大きくしてなる請求項２に記
載の使用済み研掃材の回収装置。3. The apparatus for collecting used abrasives according to claim 2, wherein the sieve cylinder has a sieve whose size is gradually increased from the supply side of the workpiece to the other end.
ューコンベアを設けてなる請求項２または３に記載の使
用済み研掃材の回収装置。4. The apparatus for collecting used abrasives according to claim 2, wherein a screw conveyor for carrying the object to be processed is provided inside the sieve cylinder.
の駆動手段に共用してなる請求項２〜４のいずれかに記
載の使用済み研掃材の回収装置。5. An apparatus for collecting used abrasives according to claim 2, wherein said rotary driving means is shared with driving means for a screw conveyor.
設けてなる請求項２〜５のいずれかに記載の使用済み研
掃材の回収装置。6. An apparatus for collecting used abrasives according to claim 2, further comprising a bucket elevator for charging the object to be processed.
求項２〜６のいずれかに記載の使用済み研掃材の回収装
置。7. The apparatus for collecting used abrasive material according to claim 2, wherein a spiral ridge is provided on an inner peripheral surface of the sieve cylinder.
下向きに傾斜させてなる請求項２〜７のいずれかに記載
の使用済み研掃材の回収装置。8. The apparatus for collecting used abrasives according to claim 2, wherein the sieve cylinder is inclined downward from the supply side of the workpiece to the other end.
てなる請求項２〜８のいずれかに記載の使用済み研掃材
の回収装置。9. The apparatus for collecting used abrasives according to claim 2, wherein a falling amount control valve is provided at a lower end of the falling tank.
る突部を設けてなる請求項２〜９のいずれかに記載の使
用済み研掃材の回収装置。10. The apparatus for collecting used abrasives according to claim 2, wherein the falling tank is provided with a projection whose height gradually increases downward.
出口に向けて均一に分散流下するように振動する構成を
有する請求項２〜１０のいずれかに記載の使用済み研掃
材の回収装置。11. The used cleaning apparatus according to claim 2, wherein the falling tank has a structure in which a bottom plate of the tank vibrates so as to uniformly disperse and flow the sieved powder toward an outlet. Material recovery equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000023986A JP2001212764A (en) | 2000-02-01 | 2000-02-01 | Recovery method of used grinding material and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000023986A JP2001212764A (en) | 2000-02-01 | 2000-02-01 | Recovery method of used grinding material and device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001212764A true JP2001212764A (en) | 2001-08-07 |
Family
ID=18550065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000023986A Pending JP2001212764A (en) | 2000-02-01 | 2000-02-01 | Recovery method of used grinding material and device thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001212764A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004330381A (en) * | 2003-05-09 | 2004-11-25 | Bridgestone Corp | Abrasive blasting method and blasting equipment |
| US9254508B2 (en) | 2011-09-29 | 2016-02-09 | Kashiwabara Corporation | Powder and granular material separation processing device, powder and granular material separation processing method, and powder and granular material separation and collection processing system |
| JP2019188512A (en) * | 2018-04-24 | 2019-10-31 | Ｊｆｅスチール株式会社 | Granular powder recovery hopper, operation method for the granular powder recovery hopper, shot blasting device and operation method for the shot blasting device |
| JP2020097119A (en) * | 2018-12-17 | 2020-06-25 | 株式会社松井製作所 | Powder-removing device for granular body material |
| CN114518034A (en) * | 2022-03-24 | 2022-05-20 | 安徽华铂再生资源科技有限公司 | Fluidized bed furnace feeding device |
-
2000
- 2000-02-01 JP JP2000023986A patent/JP2001212764A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004330381A (en) * | 2003-05-09 | 2004-11-25 | Bridgestone Corp | Abrasive blasting method and blasting equipment |
| US9254508B2 (en) | 2011-09-29 | 2016-02-09 | Kashiwabara Corporation | Powder and granular material separation processing device, powder and granular material separation processing method, and powder and granular material separation and collection processing system |
| JP2019188512A (en) * | 2018-04-24 | 2019-10-31 | Ｊｆｅスチール株式会社 | Granular powder recovery hopper, operation method for the granular powder recovery hopper, shot blasting device and operation method for the shot blasting device |
| JP2020097119A (en) * | 2018-12-17 | 2020-06-25 | 株式会社松井製作所 | Powder-removing device for granular body material |
| CN114518034A (en) * | 2022-03-24 | 2022-05-20 | 安徽华铂再生资源科技有限公司 | Fluidized bed furnace feeding device |
| CN114518034B (en) * | 2022-03-24 | 2023-07-18 | 安徽华铂再生资源科技有限公司 | Fluidized bed furnace feed device |
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