JP2006314978A - Vibration screen - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration screen vibrating with lesser action force and accurately separating light specific gravity matter from heavy specific gravity matter. <P>SOLUTION: Multiple pairs of balancing links forming vibration function of a screen body are provided with rigidity; a counter weight balancing to the total weight of the screening body and a treating object is fixedly provided; separation curtains having functions of regulating inlet and outlet amount of air more than required, and of sending the treating object to a charging or discharge port following vibration of the screening body are provided at the charging port supplying the treating object to the filter body, the discharge port for the light specific gravity matter located at a lower side of the tilted filter body, and a discharge port for fine particles passing through a meshed plate toward the lower side, respectively, for enhancing the accuracy of classification; and guide plates are provided at an upper part of the meshed plate from a high part of the filter body to the charge port with a space suited to the property of the treating object, to form a high speed air passage. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は比重の異なる物質の混合物を高比重物、低比重物、及び小粒子物に篩い分ける揺動型分別篩に関するものである。  The present invention relates to an oscillating type separation sieve for sieving a mixture of substances having different specific gravity into a high specific gravity product, a low specific gravity product, and a small particle product.

揺動型分別篩は穀物の選別機として古くから用いられてきている。篩の揺動に加えて空気の流れを併用する形式の篩も販売されてきた。  Oscillating separation sieves have long been used as grain sorters. A type of sieve that uses an air flow in addition to the shaking of the sieve has also been sold.

これらの篩は傾斜した網目板を有し、傾斜した網目板を斜め上下方向に揺動することで、網目板の高低位の両端に設けた排出口には、高位側には高比重物、低位側には軽比重物、及び網目板を通過した小粒子物が別の下方に分離されて排出される方式である。  These sieves have an inclined mesh plate, and by swinging the inclined mesh plate diagonally up and down, the outlets provided at both high and low ends of the mesh plate have a high specific gravity on the high side, On the lower side, light specific gravity and small particles that have passed through the mesh plate are separated and discharged separately.

また、従来の揺動篩は篩体と処理物を合わせた重量を直に揺動する方式であるために、その重量に抗するよう設計され、より頑丈な構造に作られていた。  In addition, since the conventional swing sieve is a system that swings the combined weight of the sieve body and the processed material directly, it is designed to resist the weight and has a more robust structure.

揺動篩には揺動による分別作用だけでは高比重物と低比重物の分離が十分に行えないことが常態であった。この分離過程をを補完する手段として網目板の上方に空気を流入する方式も存在したが、精度の高い分離を実現さるものではなかった。  It was normal that the swinging sieve could not sufficiently separate the high specific gravity and the low specific gravity only by the separation action by swinging. As a means for complementing this separation process, there was a system in which air was allowed to flow above the mesh plate, but high-precision separation was not realized.

従来の揺動篩は篩体と処理物を合わせた重量を直に揺動する方式であり、かつ高速で振幅運動をさせるため、その駆動系は頑丈な構造に作られ、その系を駆動する原動機も高出力が必要であった。  The conventional swing sieve is a system that swings the combined weight of the sieve body and the processed material directly, and in order to make the amplitude motion at high speed, its drive system is made with a sturdy structure and drives that system The prime mover also needed high output.

空気の流れで軽比重物を網目板の下位側に移動させる方式は存在したが十分な処理物の分離は得られないため、より精度の高い分離を実現するためには、高速なの空気の流れと処理物間のより長く安定した対向接触が必要とされていた。  Although there was a method of moving light specific gravity to the lower side of the mesh plate by the air flow, sufficient separation of the processed material could not be obtained, so in order to achieve more accurate separation, high-speed air flow There was a need for a longer and more stable counter contact between the treated material.

篩体を揺動機能を構成する複数対の平衡リンクに剛性を持たせ、篩体と処理物を合わせた重量に釣り合うカウンターウェイト固着して設ける。  The sieve body is provided with rigidity to a plurality of pairs of balanced links constituting a swinging function, and is fixed by a counterweight that matches the combined weight of the sieve body and the processed material.

カウンターウェイトの固着された平衡リンクの支持フレーム側の固定支点廻りに篩体と処理物の合計重量が惹起する偶力と、該偶力に対向する偶力がカウンターウェイトにより付与されて偶力が生じる、この２の偶力は均衡状態を現出する。このように均衡の取れた篩体系全体はより小さな作用力によって揺動することが可能となる。  A couple that generates the total weight of the sieve and the processed material around the fixed fulcrum on the support frame side of the balanced link to which the counterweight is fixed, and a couple that opposes the couple are applied by the counterweight. The resulting couple of two reveals an equilibrium. In this way, the balanced sieve system as a whole can be swung with a smaller acting force.

また、この発明の請求項２に記載の発明は、分別の精度を向上する目的で、篩体へ処理物を供給する投入口、傾斜した篩体の低位側にある軽比重物の排出口及び網目板を下方に通過した微粒子物の排出口には、それぞれ必要以上の空気の出入りを規制することと、加えて処理物を篩体の揺動に伴って投入又は排出口に送り出すことが可能な機能を有する隔離幕をそれぞれに設ける、隔離幕は復元性のある弾性材等で製作し、機能目的を果たすように成形して組み付ける。  In addition, the invention according to claim 2 of the present invention is characterized in that, for the purpose of improving the accuracy of separation, an inlet for supplying a processed material to the sieve body, an outlet for a light specific gravity material on the lower side of the inclined sieve body, and It is possible to restrict the flow of unnecessary air in and out of the particulate matter outlet that has passed through the mesh plate downward, and in addition, the processed material can be sent to the inlet or outlet as the sieve swings Separating curtains having various functions are respectively provided. The separating curtains are made of a resilient elastic material or the like, and are molded and assembled so as to fulfill the functional purpose.

篩体の高位側から投入口に掛けて網目板の上方に処理物の性状に合った間隔を離して案内板を設け、高速空気流路を形成する。  A guide plate is provided from the higher side of the sieve body to the inlet and spaced above the mesh plate according to the properties of the processed material to form a high-speed air flow path.

特許請求項１においては、揺動平衡リンクにカウンターウェイトを固着して設け、該平衡リンクの固定支点周りの偶力の均衡を現出ことによって、篩体の揺動をより小さい作用力で実現することが可能になった。  According to the first aspect of the present invention, the counterweight is fixedly attached to the oscillating balance link, and the balance of the couple around the fixed fulcrum of the balance link is revealed to realize the swing of the sieve body with a smaller acting force. It became possible to do.

揺動を起こす作用力が小さいことは、篩体の揺動振幅を更に大きくすること、または振幅数の増大が可能で、網目板上の処理物の移送速度が大きくなり処理量も増大できる。  If the action force causing the oscillation is small, the oscillation amplitude of the sieve body can be further increased, or the amplitude number can be increased, the transfer speed of the processed material on the mesh plate can be increased, and the throughput can be increased.

小さい作用力で目的の揺動が成り立つことにより、作動系を駆動する作動系の強度レベルも下げることができると共に、原動機もより小さい容量ですむ効果が得られる。  Since the desired oscillation can be achieved with a small acting force, the strength level of the operating system that drives the operating system can be lowered, and the prime mover can have a smaller capacity.

上記の効果により、駆動系の製作費は低廉に抑えることができるとともに、原動機等のランニングコストも継続的に低く抑えることができる。  Due to the above effects, the drive system production cost can be kept low, and the running cost of the prime mover can be kept low continuously.

揺動する篩体の網目板上に投入された高比重物質は篩体の高速揺動により慣性力を惹起されて、網目板の高位方向に順次異動し、高速空気流路の通過の際に軽比重物を精度良く分離しつつ、やがては吸気口より外部に排出される効果を得る。  The high specific gravity material thrown on the mesh plate of the oscillating sieve is caused by the inertial force due to the high-speed oscillation of the sieve, and sequentially moves in the higher direction of the mesh plate, and passes through the high-speed air flow path. While separating light specific gravity with high accuracy, the effect of being discharged to the outside from the air intake is obtained.

篩体の網目板を吹き上げる供給空気は軽比重物の小片等の網目板の下方への通過は阻止し軽量処理物を浮遊状態とする。ただし小粒子物は供給口から進入する空気流に押されつつ、網目板の下方に通過し、空気供給口より侵入する空気流に押されて、篩体の下位方向の隔離幕を通過して排出口より外部に排出される。  The supply air that blows up the mesh plate of the sieve body prevents small pieces of light specific gravity from passing below the mesh plate, and makes the lightweight processed product float. However, the small particles pass under the mesh plate while being pushed by the air flow entering from the supply port, are pushed by the air flow entering from the air supply port, and pass through the separator in the lower direction of the sieve body. It is discharged outside through the discharge port.

上述の構造において吸気口からの吸入空気量と網目板を通過して吹き上げ流を作るための供給口からの供給空気量をあわせた空気量を排気口から誘引ブロアー等で排気することにより、網目板と案内板で形成する高速空気流路を空気が吸気口から投入口に掛けて、一定の区間を一定の時間を掛けて高速空気流と処理物が対向して接触するので、前述の供給空気流によって浮動状態にある軽比重処理物は該高速空気流に乗って網目板の低位側に移行することになり、軽比重物は高比重物と精度良く分離する効果が得られる。  In the above-described structure, the amount of air combined with the amount of intake air from the intake port and the amount of air supplied from the supply port for creating a blow-up flow through the mesh plate is exhausted from the exhaust port by an induction blower or the like. Since the high-speed air flow path formed by the plate and the guide plate passes from the intake port to the input port, and the high-speed air flow and the processing object are in contact with each other over a certain period of time, the aforementioned supply The light specific gravity processed product that is in a floating state by the air flow is transferred to the lower side of the mesh board by riding on the high speed air flow, and the light specific gravity can be accurately separated from the high specific gravity material.

また、軽比重物の形、大きさ、比重等に合わせて吸気空気量、及供給空気量を排気及び吸気系のダクトにダンパー等を設け、適宜に空気量を増減できる制御方式を採用することによって、軽比重物質の分離精度をさらに向上することが可能と成る。  Also, adopt a control system that can adjust the air volume appropriately by installing dampers in the exhaust and intake system ducts according to the shape, size, specific gravity, etc. of the light specific gravity object. By this, it becomes possible to further improve the separation accuracy of light specific gravity substances.

以下本発明の実施の形態として一実施例を図１、図２に基づいて説明する。  An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

図１においてフレーム１は揺動篩の構成部材を扛重し、支持する躯体である。  In FIG. 1, a frame 1 is a casing that supports and supports the structural members of the swinging sieve.

フレーム１には篩体９平衡リンク４，５で、揺動可能にする固定枢支点２，３を固着して設ける。  The frame 1 is provided with fixed pivot points 2 and 3 that are swingable by the sieve body 9 balanced links 4 and 5.

篩体９には平衡リンク４，５を支持する枢支点６，７を固着して設ける。  The sieve body 9 is provided with pivot points 6 and 7 that support the balanced links 4 and 5 fixedly.

フレーム１の固定枢支点２と篩体９の枢支点６の間に一対の平衡リンク４をもうけ、固定枢支点２廻りに揺動自在となす。。  A pair of balanced links 4 are provided between the fixed pivot point 2 of the frame 1 and the pivot point 6 of the sieve body 9 so as to be swingable around the fixed pivot point 2. .

フレーム１の固定枢支点３と篩体９の枢支点７の間に一対の平衡リンク５をもうけ、固定枢支点３廻りに揺動自在となす。  A pair of balanced links 5 are provided between the fixed pivot point 3 of the frame 1 and the pivot point 7 of the sieve body 9 so as to be swingable around the fixed pivot point 3.

平衡リンク５には篩体９と図示していない処理物の合計重量が固定枢支点３廻りに時計方向に廻動しようとする偶力に見合った大きさの、反板時計方向に廻動する偶力を惹起するカウンターウェイト８を固着して設ける。  The balance link 5 rotates in the counterclockwise direction in which the total weight of the sieve body 9 and the processed material (not shown) has a size corresponding to the couple trying to rotate clockwise around the fixed pivot 3. A counterweight 8 that causes couple is fixedly provided.

篩体９には、篩体９を揺動するための作用力を受ける駆動枢支点１０を設け、フレーム１に固着して設けた廻動自在の偏芯軸１２との間を連接棒１１で接続する。  The sieve body 9 is provided with a driving pivot point 10 that receives an acting force for swinging the sieve body 9, and a connecting rod 11 is provided between the sieve body 9 and a rotatable eccentric shaft 12 that is fixed to the frame 1. Connecting.

偏芯軸１２は、モーター１３によりプリー、ベルト等を介して連続回転可能に設定する。  The eccentric shaft 12 is set to be continuously rotatable by a motor 13 via a pulley, a belt or the like.

篩体９と処理物を加えた重量による固定枢支点３廻りの時計方向廻り偶力と該偶力に対向する反時計廻りの偶力が均衡することにより、フレーム１上の遍芯軸１２と篩体９に設けられた駆動枢支点１０を接合する連接棒１１はごく小さな軸力で駆動して、篩体９に揺動運動を起こすことができる。  Due to the balance between the counterclockwise couple around the fixed pivot point 3 and the counterclockwise couple facing the couple, the uniaxial shaft 12 on the frame 1 The connecting rod 11 that joins the drive pivot point 10 provided on the sieve body 9 can be driven with a very small axial force to cause the sieve body 9 to swing.

図２において、フレーム１には投入口２４と杯気口２６を備えた筐体を固着して設け、篩体９との接合部には筐体９との接触が生じないよう、適宜な間隔を置いて双方に接合口２８を形成して設ける。  In FIG. 2, the frame 1 is fixedly provided with a casing having an inlet 24 and a cup 26, and an appropriate interval is provided so that contact with the casing 9 does not occur at a joint portion with the sieve body 9. The joint port 28 is formed and provided on both sides.

篩体９には、傾斜する網目板１４と、網目板１４の上方に高速空気流路２７を形成する案内板１５を設ける。網目板１４の下層部には網目板１４を下方に通過した小粒子が篩体９の低位側に設けた排出口２２にむかって移送するための底板１９を備える。  The sieve body 9 is provided with an inclined mesh plate 14 and a guide plate 15 that forms a high-speed air flow path 27 above the mesh plate 14. A bottom plate 19 is provided in the lower layer portion of the mesh plate 14 for transferring small particles passing through the mesh plate 14 downward toward the discharge port 22 provided on the lower side of the sieve body 9.

篩体９の高位側には吸気口１８を、また網目板１４と底板１９ので形成する空間に空気を供給するための供給口を備える。  An intake port 18 is provided on the higher side of the sieve body 9 and a supply port for supplying air to a space formed by the mesh plate 14 and the bottom plate 19 is provided.

傾斜した篩体９の低位側にある軽比重物の排出口１７及び網目板１４を下方に通過した小粒子物の排出口２２には、それぞれ必要以上の空気の出入りを規制することと、加えて処理物を篩体の揺動に伴って処理物を排出口１７、２２に送り出すことが可能な機能を有する隔離幕１６，２１をそれぞれに備える、隔離幕１６，２１は復元性のある弾性材等で製作し、機能目的を果たす形状に加工して組み付ける。隔離幕１６，２１は一枚板状ではなく縦方向に数箇所切れ目を入れて、暖簾に似た形状とすることが望ましい。  In addition to restricting the entry and exit of air more than necessary to the discharge port 17 for light specific gravity and the discharge port 22 for small particles that have passed through the mesh plate 14 on the lower side of the inclined sieve body 9, The separators 16 and 21 are provided with isolation curtains 16 and 21 respectively having a function capable of sending the processed product to the discharge ports 17 and 22 as the sieve swings. Manufactured with materials, etc., processed and assembled into a shape that fulfills the functional purpose. It is desirable that the separating screens 16 and 21 have a shape similar to that of warmth by notching a single plate but having several cuts in the vertical direction.

フレーム１に固着して設けた投入口２４の内部には、必要以上の空気の出入りを規制することと、加えて処理物を処理物の自重によって篩体９に供給することが可能な機能を有する隔離幕２５を設ける。隔離幕２５は上述と同様に暖簾に似た形状とすることが望ましい。  The inside of the input port 24 fixedly attached to the frame 1 has a function of restricting the entry and exit of air more than necessary, and in addition, the function of supplying the processed material to the sieve body 9 by the weight of the processed material. An isolation screen 25 is provided. It is desirable that the isolation screen 25 has a shape similar to warmth as described above.

フレーム１に固着して設けた投入口２４及び排気口２６下部に設けた接続口２８と、篩体９の対向位置に設けた接続口２８との間は流動する空気や処理物の漏洩を阻止する目的の可撓性を有する膜体２３を備えて、篩体９の揺動に支障のない構造とする。  Between the connection port 28 provided at the lower portion of the inlet 24 and the exhaust port 26 fixedly attached to the frame 1 and the connection port 28 provided at the position opposite to the sieve body 9, leakage of flowing air and processed material is prevented. The film body 23 having the desired flexibility is provided so that the swinging of the sieve body 9 is not hindered.

排気口２６からの排気空気量は量は供給口２０から導入される供給空気量と、高速空気流路の２７の必要流速に見合った吸気口からの吸気量を合わせた容量が少なくても必要となる。供給口や排気口には空気流量を調整可能な図示していないダクトへダンパーを備えることが望ましい。  The amount of exhaust air from the exhaust port 26 is required even if the volume of the supply air amount introduced from the supply port 20 and the intake amount from the intake port corresponding to the required flow rate of the high-speed air flow path 27 is small. It becomes. It is desirable to provide a damper to a duct (not shown) capable of adjusting the air flow rate at the supply port and the exhaust port.

本発明の実施例を示す平衡リンク部から見た側面図。The side view seen from the balanced link part which shows the Example of this invention. 本発明の実施例を示す中心縦断面図。The center longitudinal cross-sectional view which shows the Example of this invention.

符号の説明Explanation of symbols

１ フレーム
２、３ 固定枢支点
４，５ 平衡リンク
６，７ 枢支点
８ カウンターウェイト
９ 篩体
１０ 駆動枢支点
１１ 連接棒
１２ 偏芯軸
１３ モーター
１４ 網目板
１５ 案内板
１６、２１，２５ 隔離幕
１７，２２ 排出口
１８ 吸気口
１９ 底板
２０ 供給口
２３ 膜体
２４ 投入口
２６ 排気口
２７ 高速空気流路
２８ 接続口DESCRIPTION OF SYMBOLS 1 Frame 2, 3 Fixed pivot point 4,5 Balance link 6,7 Pivot point 8 Counterweight 9 Screen body 10 Drive pivot point 11 Connecting rod 12 Eccentric shaft 13 Motor 14 Mesh plate 15 Guide plate 16, 21, 25 Separating curtain 17, 22 Discharge port 18 Intake port 19 Bottom plate 20 Supply port 23 Film body 24 Input port 26 Exhaust port 27 High-speed air flow path 28 Connection port

Claims (2)

篩体を揺動することを機能目的とする、複数対の平行リンクに剛性を持たせ、該リンクに、篩体と篩い分ける処理物の重量と釣り合うカウンターウェイトを固着して設け、該リンクの固定側枢支点廻りに篩体と篩い分ける処理物の重量により生ずる偶力と、この偶力に対向するカウンターウェイトにより生ずる偶力を均衡させることによって、篩体を小さな作用力で揺動可能にし、かつより振幅を大きく、より高速での揺動を可能にした篩体の揺動様式。  A plurality of pairs of parallel links are provided with rigidity for the purpose of swinging the sieve body, and a counterweight that is balanced with the weight of the processed material to be sieved is fixed to the link. By balancing the couple generated by the weight of the processed material to be sieved around the fixed pivot point and the couple generated by the counterweight facing this couple, the sieve can be swung with a small acting force. And the swinging mode of the sieve body which has larger amplitude and enables swinging at higher speed. 篩体の分別作用を助長する手段として、篩体の中での意図的で、かつ高速な空気の流れを実現することが望ましい。篩体の処理物投入口、及び複数の、分別された処理物の排出口には空気の流出入を規制しつつ、処理物を通過可能とする隔離膜を設けると共に、篩体の網目板の上方には適宜な間隔で案内板を儲け高速空気流路を形成して、処理物の分別をより精度の良く行える構成を特徴とする揺動篩。  As a means for facilitating the sorting action of the sieve body, it is desirable to realize an intentional and high-speed air flow in the sieve body. The sieve treatment product inlet and the plurality of separated treatment product discharge ports are provided with isolation membranes that allow the treatment product to pass through while restricting the inflow and outflow of air. An oscillating sieve characterized by a structure in which a guide plate is disposed at an appropriate distance above to form a high-speed air flow path so that the processed material can be more accurately separated.

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