JPS63115969A - Gate valve made of ceramics - Google Patents
Gate valve made of ceramicsInfo
- Publication number
- JPS63115969A JPS63115969A JP26240286A JP26240286A JPS63115969A JP S63115969 A JPS63115969 A JP S63115969A JP 26240286 A JP26240286 A JP 26240286A JP 26240286 A JP26240286 A JP 26240286A JP S63115969 A JPS63115969 A JP S63115969A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- seal
- ceramics
- plates
- gate
- 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
- 239000000919 ceramic Substances 0.000 title claims abstract description 24
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 7
- 239000007788 liquid Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000010802 sludge Substances 0.000 description 6
- 239000002002 slurry Substances 0.000 description 5
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910003465 moissanite Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Landscapes
- Sliding Valves (AREA)
Abstract
Description
及肌少旦迎 Welcome to the young boy
本発明は、弁体と弁シールをセラミックス材料で構成し
たゲートバルブに関する。
［従来の技術］
酸、アルカリ、そのほかの腐食性の液体や、摩耗をひき
おこしやすいスラリーの搬送機器を構成するバルブとし
ては、これまで各種ステンレス鋼や超硬合金を材料にし
たものや、それにテフロンなどを組み合わせたボールバ
ルブやゲートバルブが使用されて来た。
スラリー輸送の場合、ボールバルブではスラッジがボー
ルとシートとの間に入りこみやすく、ボールバルブの構
造に金属どうしのすり合わせ面があると、金属面にカジ
リが生じることが避は難い。
これを改善するため、すり合わせ面をセラミックス製と
したボールバルブも提案されている。 しかし、セラミ
ックスの加工は金属より格段に困難でおって、とくにポ
ールとシートの球面仕上げの精度には限度がめるから、
どうしてもロス１〜高になる。
一方、ゲートバルブは一般に締切弁がテーパになってい
てバルブ底部にスラッジが堆積しやすく、多量に堆積す
れば、バルブとして機能しなくなるおそれがある。 と
くに高濃度のスラリーの場合には、テーパ部にスラッジ
がかみ込まれ、完全な遮断ができなくなることがある。The present invention relates to a gate valve in which a valve body and a valve seal are made of ceramic material. [Prior Art] Valves used in conveying equipment for acids, alkalis, and other corrosive liquids, as well as slurry that tends to cause wear, have so far been made of various stainless steels, cemented carbide, and Teflon. Ball valves and gate valves, which are combinations of such devices, have been used. When transporting slurry, sludge tends to get stuck between the ball and the seat of a ball valve, and if the ball valve has a metal fitting surface, it is inevitable that galling will occur on the metal surface. In order to improve this problem, ball valves whose mating surfaces are made of ceramic have also been proposed. However, processing ceramics is much more difficult than metals, and there are limits to the accuracy of the spherical finishing of the pole and seat.
The loss will inevitably be 1~high. On the other hand, gate valves generally have tapered shutoff valves, and sludge tends to accumulate at the bottom of the valve, and if a large amount of sludge accumulates, there is a risk that the valve will no longer function. Particularly in the case of highly concentrated slurry, sludge may get caught in the tapered portion, making it impossible to completely shut off.
そこで、低粘度液から高粘性液体を含む各種液体やスラ
リーの輸送の分野で、低温から高温まで広い温度範囲に
わたって使用することができる、高い信頼性とすぐれた
耐久性をもち、しかも低いコストで製造できるバルブの
開発が要請されていた。 本発明の目的は、こうした要
望にこたえて、セラミックス材料を活用したゲートバル
ブを提供するにおる。
及用Ω璽メ
［問題点を解決するための手段］
図面を参照して説明すれば、本発明のセラミックス製ゲ
ートバルブは、第１図に示すように、流体通過孔２１を
有するセラミックス製のシール板２Ａおよび２Ｂを対向
させて平行面をもつ弁シールを構成し、それらの間に流
体通過孔２１と整合する開口部１１を有し両面が平行な
セラミックス製のゲート板１を摺動可能に設け、ステム
３を介してゲート板１を駆動するアクチュエータ（図示
してない）とともに、バルブボックス部材４および５で
一体化してなる。
セラミックス製のシール板２Ａおよび２Ｂは、いずれも
表面が平滑な平板であって、流体通路管４１および５１
を一体に形成したバルブボックス部材４および５に、金
属製のシールリングなどのシール材６を介して、ポルト
８によりシール状態で固定されている。 このシール材
６は、シール板２Ａおよび２Ｂの一方または両方を常に
ゲート板１に向って押しつけているように、バネのはた
らきをする弾性溝進体とすることが好ましく、そうでな
い場合は、別途にバネを使用する。
ゲート板１は、基本的には第２図に示す平面形状を有す
る。 これは、その上端をステム３を介して、バルブボ
ックス部材４および５に装備した、油圧または空気圧式
シリンダーのようなアクチュエータ（それ自体は図示し
てない）と連結し、その駆動によりゲート板１の昇降、
すなわちバルブの開閉を行なう。 第１図は、ゲート板
１が上昇位置にあって、その開口部１１が流体通過孔２
１と合致してバルブが開の状態にあることを示している
。
一般にセラミックス材料は、圧縮には強いが、引張には
弱いという問題がおる。 バルブが大型で、ゲート板の
摺動に際してステム接続用のピン孔１２に大きな引張力
がかかり、強度に不安がおる場合には、そのピン孔１２
を２個以上段［ブたり、第３図および第４図に示すよう
に、ゲート板１の外周に金属製の保護枠７を設けたもの
を使用することが推奨される。
この保護枠７は、２枚のＬ字形断面の枠板７Ａ。
７Ｂを組み合わせ、その内周縁に凹部つまり環状溝を形
成し、これにゲート板１の外周に設けた突条部分１２を
嵌合して、ネジ７３などの手段によりゲート板１を挟持
するように固定する。 保護枠７の上端部に設けた孔７
４に接続ピンを挿入して、アクチュエータのステム３と
連結する構成をえらべば、セラミックスのゲート板１に
引張力が加わるのを避けることができる。 なお、保護
枠７の厚ざｔは、ゲート板１の厚さＴよりも薄くすべき
ことはいうまでもない。
また、セラミックス製シール板２Ａおよび２Ｂにおいて
も、その強度を高めるために、ゲート板と同様の金属製
の保護枠をつけてもよい。
シール板およびゲート板に使用するセラミックスは、ア
ルミナＡｆＪ２０３のような酸化物であっても、炭化ケ
イ素Ｓｉ Ｃや窒化ケイ素５１３Ｎ４のような、それ以
外の物質であってもよい。 容易に理解されるように、
シール板およびゲート板の本体部分を金属で製作し、表
面にセラミックスをコーティングした複合材も使用でき
る。
［作 用］
２枚のシール板とゲート板とからなるゲートバルブ本体
がセラミックスどうしの接触により構成されているから
、素材自身のもつ高い摺動性により、滑らかな開閉動作
を行なわせることができる。
セラミックスの摺動性は、表面の粗さによっても異なり
、適度に粗な表面がむしろ高い摺動性を示すこともある
から、適切な表面仕上げの程度をえらぶ必要があるが、
本発明のシール板とゲート板は、いずれもストレートな
平板であるために、加工がきわめて簡単であり、仕上げ
の度合をコントロールすることが容易でおる。
対向する２枚のシール板にはさまれてストレートに摺動
するゲート板は、シール板との間の１呂り切り作用によ
って、スラッジがかみ込まれたりバルブ底部へ堆積する
ことを防止する。
及肌辺Ｉ男
本発明のゲートバルブは、バルブ本体を構成する弁体と
弁シールをセラミックス製のストレートな平板で形成し
たから、製作が容易であって、低いコストで提供するこ
とができる。 また、フッ素樹脂などと組み合わせない
ため、セラミックスのもつ耐熱性、耐食性、耐摩耗性と
いった特性をフルに生かすことができ、酸、アルカリを
はじめとする各種の液体を、低粘度から高粘度の液体や
スラリーを含め、広い温度範囲にわたって汎用的に使用
することができる。
最大の利益は、シール板とゲート板をストレートに１舌
動させる溝造がもたらす上記の１冨り切り作用であって
、スラッジのかみ込みや堆積がなく、従って耐久性およ
び信頼性の高いゲートバルブを提供できる点にある。Therefore, in the field of transporting various liquids and slurries, including low-viscosity liquids to high-viscosity liquids, we have developed a product that can be used over a wide temperature range from low to high temperatures, has high reliability, excellent durability, and is low cost. There was a request to develop a valve that could be manufactured. An object of the present invention is to meet these demands and provide a gate valve that utilizes ceramic materials. [Means for solving the problem] To explain with reference to the drawings, the ceramic gate valve of the present invention has a ceramic gate valve having a fluid passage hole 21, as shown in FIG. Seal plates 2A and 2B are opposed to constitute a valve seal with parallel surfaces, and a ceramic gate plate 1 having parallel surfaces on both sides and having an opening 11 aligned with the fluid passage hole 21 can be slid between them. It is integrated with an actuator (not shown) for driving the gate plate 1 via the stem 3, and valve box members 4 and 5. Ceramic seal plates 2A and 2B are both flat plates with smooth surfaces, and are connected to fluid passage pipes 41 and 51.
The valve box members 4 and 5 are integrally formed with each other, and are fixed in a sealed state by a port 8 via a sealing material 6 such as a metal seal ring. This sealing material 6 is preferably an elastic grooved body that acts as a spring so that one or both of the sealing plates 2A and 2B are always pressed toward the gate plate 1. If not, it is provided separately. Use springs for The gate plate 1 basically has a planar shape shown in FIG. This is connected at its upper end via a stem 3 to an actuator (not shown per se), such as a hydraulic or pneumatic cylinder, mounted on the valve box members 4 and 5, and driven by the actuator, the gate plate 1 lifting and lowering,
That is, it opens and closes the valve. FIG. 1 shows that the gate plate 1 is in the raised position and that the opening 11 is in the fluid passage hole 2.
1, indicating that the valve is in the open state. Ceramic materials generally have the problem of being strong in compression but weak in tension. If the valve is large and a large tensile force is applied to the pin hole 12 for stem connection when the gate plate slides, and there is concern about its strength, the pin hole 12
It is recommended to use a gate plate 1 with a protective frame 7 made of metal provided around the outer periphery of the gate plate 1, as shown in FIGS. 3 and 4. This protective frame 7 includes two frame plates 7A each having an L-shaped cross section. 7B are combined, a recess or annular groove is formed on the inner circumferential edge thereof, and the protrusion portion 12 provided on the outer periphery of the gate plate 1 is fitted into this, and the gate plate 1 is held by means such as screws 73. Fix it. Hole 7 provided at the upper end of the protective frame 7
By inserting a connecting pin into 4 and connecting it to the stem 3 of the actuator, it is possible to avoid applying tensile force to the ceramic gate plate 1. It goes without saying that the thickness t of the protective frame 7 should be thinner than the thickness T of the gate plate 1. Furthermore, the ceramic seal plates 2A and 2B may also be provided with a metal protective frame similar to the gate plate in order to increase their strength. The ceramics used for the seal plate and gate plate may be oxides such as alumina AfJ203, or other materials such as silicon carbide SiC or silicon nitride 513N4. As easily understood,
It is also possible to use a composite material in which the main bodies of the seal plate and gate plate are made of metal and the surfaces are coated with ceramics. [Function] The gate valve body, which is made up of two seal plates and a gate plate, is made up of ceramics that are in contact with each other, so the high sliding properties of the materials themselves allow for smooth opening and closing operations. . The sliding properties of ceramics vary depending on the roughness of the surface, and a moderately rough surface may exhibit high sliding properties, so it is necessary to select an appropriate degree of surface finish.
Since both the seal plate and the gate plate of the present invention are straight flat plates, they are extremely easy to process and the degree of finishing can be easily controlled. The gate plate, which slides straight between two opposing seal plates, prevents sludge from being trapped or deposited on the bottom of the valve due to the close action between the gate plate and the seal plates. The gate valve of the present invention is easy to manufacture and can be provided at low cost because the valve body and valve seal constituting the valve body are formed of straight ceramic plates. In addition, since it is not combined with fluororesin, etc., it is possible to take full advantage of the properties of ceramics such as heat resistance, corrosion resistance, and wear resistance. It can be used universally over a wide temperature range, including as slurry. The biggest benefit is the above-mentioned full-cutting effect brought about by the groove structure that moves the seal plate and gate plate in one straight motion, and there is no sludge entrapment or accumulation, resulting in a highly durable and reliable gate. The point is that we can provide valves.
第１図は、本発明のセラミックス製グー１〜バルブの代
表例を示す要部の縦断面図である。
第２図は、第１図のゲートバルブからセラミックス製の
ゲート板をとり出して示した平面図である。
第３図は、本発明のゲートバルブを構成するゲート板の
、好ましい態様を示す平面図でおる。
第４図は、第３図のＩＶ −ＩＶ線方向の拡大断面図で
ある。
１・・・ゲート板 １１・・・開口部２Ａ、２Ｂ
・・・シール ２１・・・流体通過孔３・・・ステム
４．５・・・バルブボックス部材
７・・・保護枠FIG. 1 is a longitudinal cross-sectional view of essential parts showing a representative example of the ceramic goo 1 to bulb of the present invention. FIG. 2 is a plan view showing a ceramic gate plate taken out from the gate valve of FIG. 1. FIG. 3 is a plan view showing a preferred embodiment of the gate plate constituting the gate valve of the present invention. FIG. 4 is an enlarged sectional view taken along line IV-IV in FIG. 3. 1... Gate plate 11... Openings 2A, 2B
... Seal 21 ... Fluid passage hole 3 ... Stem 4.5 ... Valve box member 7 ... Protection frame
Claims (4)
板２Ａおよび２Ｂを対向させて平行面をもつ弁シールを
構成し、それらの間に流体通過孔２１と整合する開口部
１１を有し両面が平行なセラミックス製のゲート板１を
摺動可能に設け、ステム３を介してゲート板を駆動する
アクチュエータとともに、バルブボックス部材４および
５で一体化してなるセラミックス製ゲートバルブ。(1) Ceramic seal plates 2A and 2B having fluid passage holes 21 are placed opposite each other to form a valve seal with parallel surfaces, and between them there is an opening 11 that aligns with the fluid passage hole 21, and both sides are A ceramic gate valve comprising a parallel ceramic gate plate 1 slidably provided and integrated with an actuator for driving the gate plate via a stem 3 and valve box members 4 and 5.
ネの役割を兼ねる金属製シール材６でバルブボックス部
材４または５にシールされている特許請求の範囲第１項
のゲートバルブ。(2) The gate valve according to claim 1, wherein at least one of the seal plates 2A and 2B is sealed to the valve box member 4 or 5 with a metal seal member 6 that also serves as a spring.
保護枠７を設けた特許請求の範囲第１項のゲートバルブ
。(3) The gate valve according to claim 1, wherein a protective frame 7 made of metal is provided around the outer periphery of the gate plate 1, which is thinner than the thickness of the gate plate 1.
金属製の保護枠を設けた特許請求の範囲第１項のゲート
バルブ。(4) The gate valve according to claim 1, wherein a metal protective frame thinner than the thickness of the seal plates 2A, 2B is provided around the outer periphery of the seal plates 2A, 2B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26240286A JPS63115969A (en) | 1986-11-04 | 1986-11-04 | Gate valve made of ceramics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26240286A JPS63115969A (en) | 1986-11-04 | 1986-11-04 | Gate valve made of ceramics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63115969A true JPS63115969A (en) | 1988-05-20 |
Family
ID=17375276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26240286A Pending JPS63115969A (en) | 1986-11-04 | 1986-11-04 | Gate valve made of ceramics |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63115969A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02272531A (en) * | 1989-04-14 | 1990-11-07 | Fuji Photo Film Co Ltd | Method for making correct/incorrect decision on radiation irradiation field of radiograph |
| WO1998031955A1 (en) * | 1997-01-21 | 1998-07-23 | Blanco Gmbh & Co. Kg | Casting facility for producing formed bodies from a flowable curable casting resin |
| ES2160531A1 (en) * | 1999-11-30 | 2001-11-01 | Bitron Ind Espana Sa | Valve, for controlling flow of liquids in car, has ceramic flat member with aperture, and sliding between fixed rings also having apertures, with coincidence between apertures regulating opening and closing |
| CN1101907C (en) * | 1998-12-09 | 2003-02-19 | 张忠巧 | Gate valve |
| JP2005106286A (en) * | 2003-09-09 | 2005-04-21 | Kanagawa Acad Of Sci & Technol | Slide type valve device |
| KR100801230B1 (en) * | 2006-03-30 | 2008-02-11 | (주)현우산업 | Slide piping gate valve |
| JP2009008252A (en) * | 2007-04-30 | 2009-01-15 | Marco Systemanalyse & Entwicklung Gmbh | Valve |
| JP2009133422A (en) * | 2007-11-30 | 2009-06-18 | Fujii Gokin Seisakusho Co Ltd | Gas plug and method of manufacturing plug for gas plug |
-
1986
- 1986-11-04 JP JP26240286A patent/JPS63115969A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02272531A (en) * | 1989-04-14 | 1990-11-07 | Fuji Photo Film Co Ltd | Method for making correct/incorrect decision on radiation irradiation field of radiograph |
| WO1998031955A1 (en) * | 1997-01-21 | 1998-07-23 | Blanco Gmbh & Co. Kg | Casting facility for producing formed bodies from a flowable curable casting resin |
| CN1101907C (en) * | 1998-12-09 | 2003-02-19 | 张忠巧 | Gate valve |
| ES2160531A1 (en) * | 1999-11-30 | 2001-11-01 | Bitron Ind Espana Sa | Valve, for controlling flow of liquids in car, has ceramic flat member with aperture, and sliding between fixed rings also having apertures, with coincidence between apertures regulating opening and closing |
| JP2005106286A (en) * | 2003-09-09 | 2005-04-21 | Kanagawa Acad Of Sci & Technol | Slide type valve device |
| KR100801230B1 (en) * | 2006-03-30 | 2008-02-11 | (주)현우산업 | Slide piping gate valve |
| JP2009008252A (en) * | 2007-04-30 | 2009-01-15 | Marco Systemanalyse & Entwicklung Gmbh | Valve |
| JP2009133422A (en) * | 2007-11-30 | 2009-06-18 | Fujii Gokin Seisakusho Co Ltd | Gas plug and method of manufacturing plug for gas plug |
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