JPH047402Y2 - - Google Patents
Info
- Publication number
- JPH047402Y2 JPH047402Y2 JP20027186U JP20027186U JPH047402Y2 JP H047402 Y2 JPH047402 Y2 JP H047402Y2 JP 20027186 U JP20027186 U JP 20027186U JP 20027186 U JP20027186 U JP 20027186U JP H047402 Y2 JPH047402 Y2 JP H047402Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- valve chamber
- molten metal
- ceramic material
- 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.)
- Expired
Links
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 229910010293 ceramic material Inorganic materials 0.000 claims description 9
- 229910052581 Si3N4 Inorganic materials 0.000 description 6
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Landscapes
- Taps Or Cocks (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
この考案は、アルミニウムやその合金等の軽金
属溶湯用の配管に介装され、その流路を開閉する
のに利用されるバルブに関する。[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a valve that is installed in a pipe for molten light metal such as aluminum or its alloy, and is used to open and close the flow path.
（従来技術及びその問題点）
近年、軽金属溶湯を窒化ケイ素（Si3N4）等の
所謂フアインセラミツクと称される高耐熱性のセ
ラミツク材料にて製作した配管によつて一般流体
と同様に移送する試みがなされている。(Prior art and its problems) In recent years, molten light metals have been treated in the same way as general fluids through pipes made of highly heat-resistant ceramic materials called fine ceramics, such as silicon nitride (Si 3 N 4 ). Attempts are being made to relocate it.
しかして、このような配管に介装して流路を開
閉するバルブとしては、配管と同様のセラミツク
材料が使用されるが、該材料が例えば窒化ケイ素
では、シヨアー硬度2000程度と非常に硬く加工性
に劣り、かつ靭性に乏しく剪断応力に弱いこと、
また溶湯の比重がアルミニウムでは2.4位と高く
開閉に伴う抵抗が大きいこと等から、構造的に簡
素で動作性に優れるものが望まれる。 However, the valves installed in such piping to open and close the flow passages are made of the same ceramic material as the piping, but if this material is made of silicon nitride, for example, it is extremely hard to process with a Shore hardness of about 2000. It has poor properties, poor toughness, and is susceptible to shear stress.
In addition, since the specific gravity of the molten metal is around 2.4 for aluminum, and the resistance associated with opening and closing is large, it is desirable to have a structure that is simple and has excellent operability.
ところが、従来におけるこの種バルブとして略
円柱状の弁体に径方向の流路用透孔を設けた二方
コツク型のものが知られるが、強度的に不充分で
あり、熱応力による割れを生じ易いという問題が
あつた。 However, as a conventional valve of this type, there is a two-way type valve in which a radial passage hole is provided in a substantially cylindrical valve body, but it is insufficient in terms of strength and is susceptible to cracking due to thermal stress. The problem was that it was easy to occur.
（問題点を解決するための手段）
この考案は、上記問題点を解決すべくなされた
もので、強度的に優れて動作性のよい二方コツク
型の軽金属溶湯用バルブを提供することを目的と
している。(Means for solving the problem) This invention was made to solve the above problem, and the purpose is to provide a two-way valve for light molten metal that has excellent strength and good operability. It is said that
すなわち、この考案に係る軽金属溶湯用バルブ
はセラミツク材料からなり、略円柱状の弁体６が
周方向回転自在に嵌装される軸断面円形の弁室４
と、該弁室４に連通すると共に該弁室４の軸線方
向に直交する同一軸線方向の流入側および流出側
流路５，５とを備え、上記弁体６が径方向両側の
周面部に接線方向に沿う流路用凹部７，７を有し
てなるものである。 That is, the valve for light metal molten metal according to this invention is made of ceramic material, and has a valve chamber 4 with a circular axial cross section into which a substantially cylindrical valve body 6 is fitted so as to be rotatable in the circumferential direction.
and an inflow side and an outflow side flow path 5, 5 communicating with the valve chamber 4 and extending in the same axial direction orthogonal to the axial direction of the valve chamber 4, and the valve body 6 is provided on the circumferential surface on both sides in the radial direction. It has channel recesses 7, 7 along the tangential direction.
（実施例）
以下、この考案を図示実施例に基づいて説明す
る。(Example) This invention will be explained below based on the illustrated example.
第１図〜第３図において、１は窒化ケイ素の焼
結体からなるバルブケースであり、中央部に直方
体外形を有する弁部２を有し、この弁部２の両側
に先端開口縁にフランジ３ａ，３ａを備えた出入
管部３，３が同一軸線で一体形成されている。こ
の弁部２には出入管部３，３の軸線方向に直交す
る軸線を有する軸断面円形の弁室４が形成されて
おり、これに軸断面円形の流入側および流出側の
両流路５，５か直交するように連通されている。
しかして弁室４は、その内径が両流路５，５の内
径よりも若干大きく設定され、一端側つまり上部
が外部へ開口４ａされると共に、他端側つまり底
面４ｂが流路５，５のよりも低い位置にある。 In Figs. 1 to 3, 1 is a valve case made of a sintered body of silicon nitride, and has a valve part 2 having a rectangular parallelepiped outer shape in the center, and flanges on both sides of the valve part 2 at the edge of the opening. The inlet/outlet pipe parts 3, 3 provided with 3a, 3a are integrally formed with the same axis. This valve part 2 is formed with a valve chamber 4 having a circular axial cross section and having an axis perpendicular to the axial direction of the inlet/outlet pipe parts 3, 3. In this valve chamber 4, there are both flow passages 5 on the inflow side and the outflow side each having a circular axial cross section. , 5 are orthogonally connected.
Therefore, the inner diameter of the valve chamber 4 is set to be slightly larger than the inner diameter of the flow passages 5, 5, and one end side, that is, the upper part is opened 4a to the outside, and the other end side, that is, the bottom surface 4b is set as the inner diameter of the flow passages 5, 5. It is located lower than the.
６は窒化ケイ素の焼結体からなる略円柱状の弁
体であり、径方向両側の周面部に接線方向に沿う
流路用凹部７，７を有し、上面に角柱状の回動用
突起６ａが形成され、また底面６ｂの中心部に凹
球面８が設けられている。しかして、各流路用凹
部７は弁体６の周面に対する接線方向と平行な軸
線を中心とする円周面をなすように設定されてい
る。 Reference numeral 6 denotes a substantially cylindrical valve body made of a sintered body of silicon nitride, which has flow path recesses 7, 7 along the tangential direction on the circumferential surface on both sides in the radial direction, and a prismatic rotation projection 6a on the upper surface. is formed, and a concave spherical surface 8 is provided at the center of the bottom surface 6b. Thus, each channel recess 7 is set to form a circumferential surface centered on an axis parallel to the tangential direction to the circumferential surface of the valve body 6.
この弁体６は弁室４内へ開口４ａより嵌挿され
て、その軸線を中心とする回動によつて弁作動を
行うが、底面６ｂの凹球面８と弁室４の底面４ｂ
との間にアルミナ（Al2O3）製のボール９を介在
させることにより、両底面４ｂ，６ｂに空間１０
が構成されるようになされている。また両流路用
凹部７，７の上下端は流路５，５の上下位置に一
致するように設計されている。尚、弁体６の周面
と弁室４の内面とは、溶湯の漏れを生じずにかつ
弁体６が円滑に回転できるように、高度に精密仕
上げされている。 This valve body 6 is inserted into the valve chamber 4 through the opening 4a, and performs valve operation by rotating around its axis.
By interposing a ball 9 made of alumina (Al 2 O 3 ) between the
is configured. Further, the upper and lower ends of the concave portions 7, 7 for both channels are designed to coincide with the upper and lower positions of the channels 5, 5. The circumferential surface of the valve body 6 and the inner surface of the valve chamber 4 are finished with high precision so that the valve body 6 can rotate smoothly without leaking molten metal.
上記構成のバルブは、二方コツク型であり、弁
体６が第２図、第３図で示す閉弁姿勢において、
両流路５，５間が弁体６の外周面と弁室４の内周
面との密な接触により遮断され、これにより弁体
６を90°回動して第４図で示す開弁姿勢とするこ
とにより、両側の流路用凹部７，７を通して両流
路５，５が連通される。 The valve with the above configuration is a two-way cock type, and when the valve body 6 is in the closed position shown in FIGS. 2 and 3,
The space between the two flow paths 5, 5 is cut off by the close contact between the outer peripheral surface of the valve body 6 and the inner peripheral surface of the valve chamber 4, and as a result, the valve body 6 is rotated 90 degrees to open the valve as shown in FIG. By taking this posture, both channels 5, 5 are communicated through channel recesses 7, 7 on both sides.
ここで、弁体６は、周面の両側に流路用凹部
７，７を有しており、最大流路部分における断面
つまり第２図で現れる断面が直径を通る位置にあ
るから、例えば第５図で示すように弁体１１の径
方向に流路孔１２を穿設した場合に比較して、該
最大流路部分の肉部の長さと肉厚が大きく面積大
となり、かつ弁作動の応力中心となる軸線を通る
位置に肉部が存在するため、機械的および熱的強
度が大きく耐久性に優れている。 Here, the valve body 6 has flow passage recesses 7, 7 on both sides of the circumferential surface, and the cross section at the largest flow passage portion, that is, the cross section appearing in FIG. 2 is located at a position passing through the diameter. As shown in Fig. 5, compared to the case where the flow passage hole 12 is bored in the radial direction of the valve body 11, the length and thickness of the wall portion of the maximum flow passage portion are large and the area is large, and the valve operation is Since the flesh portion exists at a position passing through the axis line, which is the center of stress, it has high mechanical and thermal strength and excellent durability.
また、上記実施例の如く弁体６の底面６ｂの中
央部と弁室４の底面４ｂとの間にボール９を介在
させることにより、両底面４ｂ、６ｂが点接触と
なり、接触抵抗の減少にて弁の動作性が大きく向
上する。更に、弁体６の底面６ｂと弁室４の底面
４ｂとの間には溶湯が僅かずつ浸入し、完全に充
満した際にこれを除去するつ作業が必要となる
が、ボール９の介在により空間１０が構成されて
いることにより、浸入した溶湯が充満するまでに
長時間がかかり、それだけ上記除去のメンテナン
ス周期を長くとれるという利点がある。 Further, by interposing the ball 9 between the center part of the bottom surface 6b of the valve body 6 and the bottom surface 4b of the valve chamber 4 as in the above embodiment, both bottom surfaces 4b and 6b come into point contact, which reduces contact resistance. This greatly improves the operability of the valve. Furthermore, the molten metal gradually enters the space between the bottom surface 6b of the valve body 6 and the bottom surface 4b of the valve chamber 4, and when it is completely filled, it is necessary to remove it. The structure of the space 10 has the advantage that it takes a long time to fill with the molten metal that has entered, and the maintenance cycle for removal can be extended accordingly.
尚、弁ケース１および弁体６は窒化ケイ素以外
の高耐熱性および高強度のセラミツク材料にて製
作してもよい。またボール９もアルミナ以外に窒
化ケイ素等の他のセラミツク材料を使用可能であ
る。 Note that the valve case 1 and the valve body 6 may be made of a ceramic material with high heat resistance and high strength other than silicon nitride. Further, the ball 9 can also be made of other ceramic materials such as silicon nitride in addition to alumina.
（考案特有の効果）
この考案に係る軽金属溶湯用バルブは、セラミ
ツク材料からなる二方コツク型のものにおいて、
円柱状弁体がこの径方向両側の周面部に流路用凹
部を有するから、機械的および熱的強度が大きく
軽金属溶湯用として充分な優れた耐久性を具備す
る。またこのバルブは、構造的に極めて簡素であ
ることから、セラミツク材料であるにもかかわら
ず製作容易であると共に、弁作動が確実で信頼性
に優れている。(Effects unique to the invention) The light metal molten metal valve according to this invention is a two-way valve made of ceramic material, and has the following features:
Since the cylindrical valve body has concave portions for passages on both sides in the radial direction, it has high mechanical and thermal strength and has excellent durability sufficient for use with molten light metals. Furthermore, since this valve is extremely simple in structure, it is easy to manufacture even though it is made of ceramic material, and the valve operates reliably and has excellent reliability.
第１図はこの考案に係る一実施例の軽金属溶湯
用バルブの分解斜視図、第２図はその閉弁時の水
平断面図、第３図は第２図の−線の矢視断面
図、第４図は第２図の−線における開弁時の
断面矢視図、第５図は弁体の従来例の水平断面図
である。
４……弁室、４ａ……内底面、５……流路、６
……弁体、６ｂ……底面、７……流路用凹部、９
……ボール。
Fig. 1 is an exploded perspective view of a light metal molten metal valve according to an embodiment of the invention, Fig. 2 is a horizontal sectional view when the valve is closed, and Fig. 3 is a sectional view taken along the - line in Fig. 2. FIG. 4 is a sectional view taken along the line - in FIG. 2 when the valve is open, and FIG. 5 is a horizontal sectional view of a conventional example of the valve body. 4... Valve chamber, 4a... Inner bottom surface, 5... Channel, 6
... Valve body, 6b ... Bottom surface, 7 ... Channel recess, 9
……ball.
Claims (1)
周方向回転自在に嵌装される軸断面円形の弁室
と、該弁室に連通すると共に該弁室の軸線方向
に直交する同一軸線方向の流入側および流出側
流路とを備え、上記弁体が径方向両側の周面に
接線方向に沿う流路用凹部を有してなる軽金属
溶湯用バルブ。 ２ 弁体の底面中心部と弁室の内底面との間にセ
ラミツク材料からなる球体が装填されてなる実
用新案登録請求の範囲第１項記載の軽金属溶湯
用バルブ。[Scope of Claim for Utility Model Registration] 1. A valve chamber made of ceramic material and having a circular axial cross section into which a substantially cylindrical valve body is fitted so as to be rotatable in the circumferential direction, and a valve chamber that communicates with the valve chamber and that extends along the axis of the valve chamber. A valve for light metal molten metal, comprising an inflow side and an outflow side flow path in the same axial direction orthogonal to the direction, and the valve body has a flow path recess along a tangential direction on the circumferential surface on both sides in the radial direction. 2. The valve for light metal molten metal according to claim 1, wherein a sphere made of a ceramic material is loaded between the center of the bottom surface of the valve body and the inner bottom surface of the valve chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20027186U JPH047402Y2 (en) | 1986-12-24 | 1986-12-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20027186U JPH047402Y2 (en) | 1986-12-24 | 1986-12-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63103066U JPS63103066U (en) | 1988-07-04 |
| JPH047402Y2 true JPH047402Y2 (en) | 1992-02-27 |
Family
ID=31162625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20027186U Expired JPH047402Y2 (en) | 1986-12-24 | 1986-12-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH047402Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0694904B2 (en) * | 1989-07-17 | 1994-11-24 | 山武ハネウエル株式会社 | Valve device |
| JP4765799B2 (en) * | 2006-07-10 | 2011-09-07 | マツダ株式会社 | transmission |
| JP2008045701A (en) * | 2006-08-21 | 2008-02-28 | Mazda Motor Corp | Transmission |
-
1986
- 1986-12-24 JP JP20027186U patent/JPH047402Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63103066U (en) | 1988-07-04 |
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