JPH06294473A - Rotary regulating valve - Google Patents
Rotary regulating valveInfo
- Publication number
- JPH06294473A JPH06294473A JP9852893A JP9852893A JPH06294473A JP H06294473 A JPH06294473 A JP H06294473A JP 9852893 A JP9852893 A JP 9852893A JP 9852893 A JP9852893 A JP 9852893A JP H06294473 A JPH06294473 A JP H06294473A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- granular material
- control valve
- projected area
- gap
- 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
- Sliding Valves (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、粉体又は粒体（粉粒
体と称す）あるいは粉粒体と気体、及び／又は液体との
混合流体（以下、流動性粉粒体という）の流量を調節で
きるようにした回転式調節弁に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flow rate of powder or granules (referred to as powder granules) or a mixed fluid of powder granules and gas and / or liquid (hereinafter referred to as fluid powder granules). The present invention relates to a rotary type control valve capable of adjusting.
【０００２】[0002]
【従来の技術】従来のこの種の回転式調節弁としては、
特開昭５６−１８１６８号公報に記載されたものを挙げ
ることができる。これによれば、図６（同公報第３図よ
り）に示すように、弁箱６１の中に一対の円柱６３，６
３が接して平行に内装され、その両方には、切欠き６
４，６４が相対向するように設けられる。そして、その
両切欠きの開口総量（投影面積）において、固体通過口
６７の開閉ないし絞りがなされるものである。2. Description of the Related Art As a conventional rotary control valve of this type,
The thing described in Unexamined-Japanese-Patent No. 56-18168 can be mentioned. According to this, as shown in FIG. 6 (from FIG. 3 of the same publication), a pair of cylinders 63, 6 are provided in the valve box 61.
3 are installed in parallel with each other, and cutouts 6 are provided on both sides.
4, 64 are provided so as to face each other. Then, the solid passage port 67 is opened or closed or throttled in the total opening amount (projected area) of both the notches.
【０００３】同図の（イ）、（ロ）、（ハ）は、固体通
過口６７の閉じる順序を示したもので、（イ）は全開状
態、（ロ）は絞り状態、（ハ）は全閉状態である。また
（ロ）において流路全体が下流側に向かうほど先狭にな
っている。すなわち、下流側の切欠きａ，ａの投影面積
を小さくすることによって流量を調節するものである。(A), (B) and (C) of FIG. 3 show the closing order of the solid passage port 67. (A) is a fully opened state, (B) is a throttled state, and (C) is (C). It is fully closed. Further, in (b), the entire flow passage becomes narrower toward the downstream side. That is, the flow rate is adjusted by reducing the projected area of the notches a on the downstream side.
【０００４】[0004]
１）前記記載の弁体においては、（イ）、（ロ）、
（ハ）の順に閉じる場合に比較的大きなトラブルは少な
いものの、意外にも弁体を開くときに非常に大きな負荷
トルクがかかり、弁体の作動不良を起こすことを発見し
た。1) In the valve element described above, (a), (b),
Although there are few relatively large troubles when closing in the order of (c), it was surprisingly discovered that a very large load torque is applied when opening the valve element, causing malfunction of the valve element.
【０００５】２）さらに、全般的に弁体を閉じる時を含
めて負荷水準が高く、また円柱体の摩耗も著しいことが
わかった。2) Furthermore, it was found that the load level was high, including the time when the valve body was closed, and the columnar body was significantly worn.
【０００６】３）以上のような現象から、使用中に弁体
の回転角度に対する粉粒体の流量関数が変化し、正確な
流量調整が困難になり、また摩耗による粉粒接触部の破
損、高負荷による軸受などの破損を生じるなど重大な欠
陥があり、実用し難いものであることが見い出された。3) From the above-mentioned phenomena, the flow rate function of the powdery particles changes with the rotation angle of the valve body during use, which makes it difficult to adjust the flow rate accurately, and damages of the powdery particle contact portion due to wear, It has been found that there are serious defects such as damage to bearings due to high load, making it difficult to put into practical use.
【０００７】この発明は、上記の欠陥を解消し、長期間
安定に且つ正確に流量調整が可能で、粉粒接触部の摩耗
や破損が少なく、高負荷などによる軸受などの破損を生
じ難い実用に適した回転式調節弁を提供しようとするも
のでる。The present invention eliminates the above-mentioned deficiencies, enables stable and accurate flow rate adjustment for a long period of time, has little wear or damage to the powder-grain contact portion, and is resistant to damage such as bearings due to high load. It is intended to provide a rotary control valve suitable for.
【０００８】[0008]
【課題を解決するための手段】すなわち、この発明の回
転式調節弁は、流動性粉粒体の流れ方向に対してほゞ直
角に配置され、近接してほゞ平行に相対する円柱を備
え、且つその円柱の少なくとも一方に円周側から円柱の
軸心方向に形成された切欠き状通過口を設けた弁体であ
って、その円柱を回転させて固体通過口の投影面積を変
化させ、上記粉粒体の通過量を調節する回転式調節弁に
おいて、弁体を回転し、粉粒体上流側の通過口投影面積
を小さくすることによって流量を減少させる構造である
ことを特徴とする。That is, the rotary control valve of the present invention comprises a cylinder which is arranged at a right angle to the flow direction of the flowable granular material and which is closely adjacent and substantially parallel to each other. A valve body provided with a notch-shaped passage opening formed in the axial direction of the cylinder from the circumferential side on at least one of the cylinders, and changing the projected area of the solid passage opening by rotating the cylinder. The rotary control valve for adjusting the passage amount of the powder or granules is characterized in that the valve body is rotated to reduce the flow rate by reducing the projected area of the passage opening on the upstream side of the powder or granules. .
【０００９】さらにこの発明の回転式調節弁は、一対の
円柱が互いに直接接触することがなく、且つ該調節弁の
閉状態において、固体粒子が円柱間の隙間で目詰まりを
起こす範囲内で、且つ粉粒体の平均粒径以上の間隔を保
って備えられたことを特徴とする。Further, in the rotary control valve of the present invention, the pair of cylinders do not come into direct contact with each other, and in the closed state of the control valve, solid particles are clogged in the gap between the cylinders, In addition, it is characterized in that it is provided with a space equal to or larger than the average particle diameter of the powder or granular material.
【００１０】さらにこの発明の回転式調節弁は、該弁体
の少なくとも一部の表面が、セラミックを含む合金、ま
たはセラミックで形成されていることを特徴とする。Further, the rotary control valve of the present invention is characterized in that at least a part of the surface of the valve body is formed of an alloy containing ceramic or ceramic.
【００１１】[0011]
【作用】回転式調節弁を上記のように構成したから、円
柱の切欠きが他方の円柱に対向したときに固体通過口が
開く。また、固体通過口の絞り込みは粉粒体の流れ方向
の下流に切欠きが開く状態においてなされる。Since the rotary control valve is constructed as described above, the solid passage opening opens when the notch of the cylinder faces the other cylinder. Further, the solid passage port is narrowed down in a state in which the notch is opened downstream in the flow direction of the powder and granules.
【００１２】従って、弁体が閉じたときに粉粒体が切欠
きに蓄積するというようなことがなくなる。その結果と
して、調節弁を開くとき、従来の弁のように切欠き部に
蓄積した粉粒体を圧縮する動作が取り除かれる。その為
に、弁体を閉じる場合はもちろんのこと、弁体を開くと
きの高負荷トルクの発生はない。Therefore, when the valve body is closed, the powder or granular material is not accumulated in the notch. As a result, when opening the control valve, the action of compressing the particulate material accumulated in the notch, as in conventional valves, is eliminated. Therefore, high load torque is not generated when the valve body is opened as well as when the valve body is closed.
【００１３】また、両円柱間が接していないので、円柱
間に適当な隙間があり、動作中に両円柱の間に粉粒体を
かみ込んで大きな摩耗や高負荷の発生を起こすことはな
く、また詰まることもない。Further, since the two cylinders are not in contact with each other, there is an appropriate gap between the cylinders, and during operation, the powder particles are not caught between the two cylinders, so that large wear or high load is not caused. , It won't get stuck again.
【００１４】また、粉粒体接触部がセラミック、または
セラミックを含む合金で構成されているため、硬い粉粒
体を取り扱っても摩耗がなく、安定な作動が維持され
る。Further, since the powdery or granular material contact portion is made of ceramic or an alloy containing ceramics, even if a hard powdery or granular material is handled, there is no wear and stable operation is maintained.
【００１５】[0015]
【実施例】次に、この発明の実施例を図面に基づいて説
明する。Embodiments of the present invention will now be described with reference to the drawings.
【００１６】図１〜５は、本発明の一実施例調節弁の構
造を示したもので、その回転式調節弁は、弁箱１の中
に、一対の円柱３，３′を平行に設けるとともに、間に
間隙Ｃを設けて軸２，２′によって支え、互いに逆回転
するように例えば歯車機構８により連結されている。1 to 5 show the structure of a control valve according to an embodiment of the present invention. The rotary control valve has a pair of cylinders 3 and 3'provided in parallel in a valve box 1. At the same time, a gap C is provided between them to be supported by the shafts 2 and 2 ', and they are connected by, for example, a gear mechanism 8 so as to rotate in opposite directions.
【００１７】円柱３，３′は、粉粒体の流れ方向Ｐに対
して直角であるが、必ずしも正確に直角であることを要
しない。また、この場合は真円であるが、一般的には間
隙Ｃをほゞ一定に保つように配置された若干の楕円柱で
あってもよい。The cylinders 3 and 3'are at right angles to the flow direction P of the granular material, but they do not necessarily have to be at right angles. Further, in this case, it is a perfect circle, but in general, it may be a slight elliptic cylinder arranged so as to keep the gap C substantially constant.
【００１８】両方の円柱３，３′には対称的に切欠き
４，４′が設けられており、その切欠き４，４′は、円
柱３，３′の軸心方向に向かって凹湾曲する半円弧形に
形成され（図４参照）、そのため切欠き４，４′のエッ
ジ部５，５′が楕円形状の円弧形となっている。しか
し、一般的には５，５′は必ずしも楕円である必要はな
く、また切欠き４，４′はその一方がなくてもよい。Notches 4, 4'are provided symmetrically on both cylinders 3, 3 ', and the notches 4, 4'are concavely curved in the axial direction of the cylinders 3, 3'. Is formed in a semi-circular shape (see FIG. 4), so that the edge portions 5, 5'of the notches 4, 4'have an elliptical arc shape. However, generally, 5, 5'does not necessarily have to be elliptical, and the notches 4, 4 'may not have one of them.
【００１９】そこで、弁箱中心における固体通過口６
は、両方の切欠き４，４′が一致して相対向したときに
は（図１および図４の状態）、ほゞ円形（円形以外の形
状であっても良い）に固体通過口６が開くために、この
ときが投影面積において最もその固体通過口６が大き
い。Therefore, the solid passage port 6 at the center of the valve box
Is because the solid passage port 6 opens in a substantially circular shape (a shape other than a circular shape is also possible) when both the notches 4 and 4'are aligned and face each other (states of FIGS. 1 and 4). At this time, the solid passage opening 6 is the largest in the projected area.
【００２０】また、円柱３，３´が粉粒体の流れ方向Ｐ
に順応する方向Ｑに回転すると、図２のように、粉粒体
上流側の通過口７の投影面積が小さくなり、流量が減少
する。この場合、下流側の通過口７′の投影面積は逆に
増大しているが、粉粒体の流量に影響はなく、流量は上
流側の通過口７の面積によって絞られている。Further, the cylinders 3 and 3'are the flow direction P of the granular material.
When rotated in the direction Q that conforms to, the projected area of the passage opening 7 on the upstream side of the granular material becomes small and the flow rate decreases, as shown in FIG. In this case, the projected area of the downstream passage 7'is increased conversely, but it does not affect the flow rate of the granular material, and the flow rate is restricted by the area of the upstream passage 7.
【００２１】図３のようにさらに回転して両方の円柱
３，３′が全体に外周面で近接したときには、隙間Ｃだ
けの間をおいた閉の状態となる。この状態で隙間Ｃの間
隔は粉粒体の目詰まりによって、粉粒体の流出を実質的
に停止させる範囲に調節されている。As shown in FIG. 3, when both the cylinders 3 and 3'are further rotated as shown in FIG. 3 and come close to each other on the outer peripheral surface, a closed state having a gap C is provided. In this state, the gap C is adjusted to a range that substantially stops the outflow of the powder or granules due to the clogging of the powder or granules.
【００２２】本発明において最も重要なことは、従来の
調節弁とは全く逆に上流側の通過口７の投影面積の減少
によって流量が制限されることである。従って、本発明
の弁の全開状態では、上下の固体通過口７，７′の投影
面積はほぼ同程度であるが、流量調節状態では、一般に
上流側の通過口７の投影面積は下流側の通過口７′の投
影面積よりも小さい。すなわち、固体通過口７，７′は
下流側に向かうほど先広になっている。In the present invention, the most important point is that the flow rate is limited by the reduction of the projected area of the upstream passage 7, which is contrary to the conventional control valve. Therefore, in the fully opened state of the valve of the present invention, the projected areas of the upper and lower solid passages 7, 7'are substantially the same, but in the flow rate adjusted state, the projected area of the passage 7 on the upstream side is generally the same as the projected area on the downstream side. It is smaller than the projected area of the passage opening 7 '. That is, the solid passage openings 7, 7'become wider toward the downstream side.
【００２３】また、特に取り扱う粉粒体の硬度が高い場
合には、一対の円柱３，３′は互いに接触することがな
く、且つ、該調節弁の閉状態において、固体粒子が円柱
間の隙間で目詰まりを起こす範囲内で、粉粒体の平均粒
径以上の間隔を保っていなければならない。この間隔
は、粉粒体の性質に依存するが、一般に好ましくは０.
０１〜５ｍｍ程度、さらに好ましくは０.１〜３ｍｍ程
度である。Further, particularly when the hardness of the powder or granular material to be handled is high, the pair of cylinders 3 and 3'do not contact each other, and in the closed state of the control valve, the solid particles have a gap between the cylinders. Within the range where clogging occurs at, the spacing must be kept equal to or larger than the average particle size of the powder. This spacing depends on the nature of the granulate, but is generally preferably 0.
It is about 0.1 to 5 mm, more preferably about 0.1 to 3 mm.
【００２４】また、取り扱う粉粒体の硬度が高い場合
は、粉粒体接触部の硬度は大きなものであることが必要
である。必要に応じて硬質金属の使用も可能であるが、
一般に硬度の高い無機粉粒体を取り扱う場合は、粉粒体
接触部には超硬合金、サーメットあるいはセラミックを
使用する事が必要である。Further, when the hardness of the granular material to be handled is high, it is necessary that the hardness of the contact portion of the granular material is large. It is possible to use hard metal if necessary,
Generally, when handling an inorganic powder having a high hardness, it is necessary to use cemented carbide, cermet or ceramic in the contact portion of the powder.
【００２５】[0025]
【発明の効果】この発明は、上記の課題を解決すること
により、次のような優れた発明の効果が得られた。By solving the above problems, the present invention has the following excellent effects of the invention.
【００２６】１）前記弁体において、閉じる場合に大き
なトラブルは少ないものの、弁体を開くときに両円柱間
に弁体の回転を阻害するような粉粒体の蓄積がなくな
り、粉粒体を圧縮することがなくなった。したがって弁
体の作動中、特に弁体が開くときの非常に大きな負荷ト
ルクがなくなり、弁体の作動不良や破損がなくなった。1) In the above-mentioned valve body, although there is little trouble in closing the valve body, when the valve body is opened, the accumulation of the powdery grains which hinders the rotation of the valve body is eliminated between the two cylinders, so that the powdery grains are removed. No more compression. Therefore, during the operation of the valve body, a very large load torque, especially when the valve body opens, disappears, and the valve body does not malfunction or break.
【００２７】２）両円柱間に粉粒体のかみ込みやかじり
込みがなくなる。したがって弁体の摩耗が減少し、高負
荷の発生も取り除かれる。また、粉粒体の粒子の破壊を
防止することが出来るため、粒子の形状や大きさが商品
価値に影響する粉粒体の流量制御に正に最適である。2) There is no biting or biting of the powder or granular material between the two cylinders. Therefore, the wear of the valve body is reduced and the occurrence of high load is also eliminated. Further, since it is possible to prevent the particles of the granular material from being destroyed, it is just optimal for controlling the flow rate of the granular material, in which the shape and size of the particle influence the commercial value.
【００２８】３）弁体を閉じるときに粉粒体接触部の円
柱体の摩耗に対しても、粉粒体接触部がセラミック又は
セラミックを含む合金で構成されているため、耐摩耗性
を高め、摩耗もなく安定な作動が維持された。3) When the valve body is closed, the wear resistance of the cylindrical body of the powder-particle contact portion is improved because the powder-particle contact portion is made of ceramic or an alloy containing ceramic. However, stable operation was maintained without wear.
【図１】全開状態における回転式調節弁の横断面説明図
である。FIG. 1 is a cross-sectional explanatory view of a rotary control valve in a fully opened state.
【図２】半閉じ状態における同横断面説明図である。FIG. 2 is an explanatory view of the same cross section in a semi-closed state.
【図３】閉完状態における同横断面説明図である。FIG. 3 is an explanatory view of the same transverse section in a completely closed state.
【図４】全開状態における同縦断面説明図である。FIG. 4 is an explanatory view of the same vertical section in a fully opened state.
【図５】弁体の構造を説明する斜視図である。FIG. 5 is a perspective view illustrating the structure of a valve body.
【図６】従来例を開の状態から閉止手順において示す説
明図である。FIG. 6 is an explanatory view showing a conventional example in a closing procedure from an open state.
Ｃ 隙間 Ｑ 弁体の円周の回転方向 Ｐ 固体の流れ方向 １ 弁箱 ２ 弁体軸芯 ３ 弁体としての円柱 ４ 弁体切欠き ５ 弁体エッジ部 ６ 弁箱中心の固体通過口 ７ 上流側の固体通過口 ７′ 下流側の固体通過口 C Gap Q Rotation direction of the circumference of the valve body P Flow direction of solids 1 Valve box 2 Valve body axis center 3 Cylindrical cylinder 4 Valve body notch 5 Valve body edge part 6 Solid passage port at the center of valve box 7 Upstream Side solid passage port 7'Downstream side solid passage port
Claims (3)
角に配置され、近接してほゞ平行に相対する円柱を備
え、且つその円柱の少なくとも一方に円周側から円柱の
軸心方向に形成された切欠き状通過口を設けた弁体であ
って、その円柱を回転させて固体通過口の投影面積を変
化させ、上記粉粒体の通過量を調節する回転式調節弁に
おいて、弁体を回転し、粉粒体上流側の通過口投影面積
を小さくすることによって流量を減少させる構造である
ことを特徴とする回転式調節弁。1. A cylinder, which is arranged at a right angle to the flow direction of the flowable powdery granules and is close to and substantially parallel to each other, and at least one of the cylinders extends from the circumferential side to the axis of the cylinder. A valve body provided with a notch-shaped passage opening formed in the axial direction, the rotary control valve for rotating the cylinder to change the projected area of the solid passage opening to adjust the passage amount of the powder or granular material. 2. A rotary control valve having a structure in which the flow rate is reduced by rotating the valve body to reduce the projected area of the passage opening on the upstream side of the granular material.
なく、且つ該調節弁の閉状態において、固体粒子が円柱
間の隙間で目詰まりを起こす範囲内で、且つ粉粒体の平
均粒径以上の間隔を保って備えられた請求項１記載の回
転式調節弁。2. A pair of cylinders are not in direct contact with each other, and in the closed state of the control valve, solid particles are clogged in the gap between the cylinders, and the average particle diameter of the powder or granular material. The rotary control valve according to claim 1, wherein the rotary control valve is provided with the above interval maintained.
ミックを含む合金、またはセラミックで形成されている
請求項１または請求項２記載の回転式調節弁。3. The rotary control valve according to claim 1, wherein at least a part of the surface of the valve body is formed of an alloy containing ceramic or ceramic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9852893A JPH06294473A (en) | 1993-04-01 | 1993-04-01 | Rotary regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9852893A JPH06294473A (en) | 1993-04-01 | 1993-04-01 | Rotary regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06294473A true JPH06294473A (en) | 1994-10-21 |
Family
ID=14222181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9852893A Pending JPH06294473A (en) | 1993-04-01 | 1993-04-01 | Rotary regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06294473A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4865146A (en) * | 1987-10-23 | 1989-09-12 | Jidosha Kiki Co., Ltd. | Four-wheel steering system |
| JP6057448B1 (en) * | 2016-08-05 | 2017-01-11 | ダイヤモンドエンジニアリング株式会社 | Flow control valve |
| JP6116736B1 (en) * | 2016-05-10 | 2017-04-19 | ダイヤモンドエンジニアリング株式会社 | Flow control valve |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5618172A (en) * | 1979-07-20 | 1981-02-20 | Kubota Ltd | Flow control valve |
| JPS5618171A (en) * | 1979-07-20 | 1981-02-20 | Kubota Ltd | Flow control valve |
| JPH02474B2 (en) * | 1987-10-08 | 1990-01-08 | Keitaro Ashikawa |
-
1993
- 1993-04-01 JP JP9852893A patent/JPH06294473A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5618172A (en) * | 1979-07-20 | 1981-02-20 | Kubota Ltd | Flow control valve |
| JPS5618171A (en) * | 1979-07-20 | 1981-02-20 | Kubota Ltd | Flow control valve |
| JPH02474B2 (en) * | 1987-10-08 | 1990-01-08 | Keitaro Ashikawa |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4865146A (en) * | 1987-10-23 | 1989-09-12 | Jidosha Kiki Co., Ltd. | Four-wheel steering system |
| JP6116736B1 (en) * | 2016-05-10 | 2017-04-19 | ダイヤモンドエンジニアリング株式会社 | Flow control valve |
| JP6057448B1 (en) * | 2016-08-05 | 2017-01-11 | ダイヤモンドエンジニアリング株式会社 | Flow control valve |
| WO2017191850A1 (en) * | 2016-08-05 | 2017-11-09 | ダイヤモンドエンジニアリング株式会社 | Flow regulation valve |
| KR20180062980A (en) | 2016-08-05 | 2018-06-11 | 다이아몬드 엔지니어링 씨오., 엘티디. | Flow control valve |
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