JPH047404Y2 - - Google Patents
Info
- Publication number
- JPH047404Y2 JPH047404Y2 JP15122886U JP15122886U JPH047404Y2 JP H047404 Y2 JPH047404 Y2 JP H047404Y2 JP 15122886 U JP15122886 U JP 15122886U JP 15122886 U JP15122886 U JP 15122886U JP H047404 Y2 JPH047404 Y2 JP H047404Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve seat
- receiving portion
- valve body
- contact surface
- 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
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 229910010293 ceramic material Inorganic materials 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 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
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide 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
Landscapes
- Taps Or Cocks (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は流体の流路を開閉するボールバルブに
関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a ball valve that opens and closes a fluid flow path.
（従来の技術）
一般的なボールバルブの構造は第３図に示すよ
うに、弁筺１００内に形成した空間Ｓ内に貫通穴
を形成した球状弁体１０１を配設し、弁筺１００
に形成した受け部１０２に弁体１０１に密に接触
するバルブシート１０３を設け、ハンドル又はア
クチユエータ等によりスピンドル１０４を回転せ
しめることで、弁体１０１を回転させ、流路の開
閉を行うようにしている。(Prior Art) As shown in FIG. 3, the structure of a general ball valve includes a spherical valve body 101 having a through hole formed in a space S formed in a valve housing 100.
A valve seat 103 in close contact with the valve body 101 is provided in a receiving portion 102 formed in the valve body 102, and by rotating a spindle 104 using a handle or an actuator, the valve body 101 is rotated and the flow path is opened and closed. There is.
そして、従来にあつては弁体１０１はステンレ
ス等の金属にて形成し、バルブシート１０３はス
テンレス等の金属或いはテフロン樹脂等によつて
形成している。 Conventionally, the valve body 101 is made of metal such as stainless steel, and the valve seat 103 is made of metal such as stainless steel or Teflon resin.
しかしながら弁体１０１及びバルブシート１０
３を金属或いは樹脂にて形成した場合、摩耗しや
すく、且つ熱膨張係数が大であるため流体洩れを
生じることがある。そこで、最近では弁体及びバ
ルブシートをセラミツクス製とし、上記の不利を
解消したボールバルブが提案されている。 However, the valve body 101 and the valve seat 10
When 3 is made of metal or resin, it is easily worn and has a large coefficient of thermal expansion, which may cause fluid leakage. Therefore, recently, a ball valve has been proposed in which the valve body and valve seat are made of ceramics, thereby eliminating the above-mentioned disadvantages.
（考案が解決しようとする問題点）
セラミツクスは極めて高硬度で摩耗しにくく、
且つ耐熱性に優れている反面、衝撃に対して欠け
やすいという欠点がある。(Problem that the invention aims to solve) Ceramics have extremely high hardness and are resistant to wear.
Although it has excellent heat resistance, it has the disadvantage of being easily chipped by impact.
特にボールバルブのバルブシートは流路の開閉
に伴なう圧変化或いは弁体の回転に追従して受け
部内において多少ガタつく。そして、このガタつ
きの際にバルブシートの当り面を形成した側の外
周エツジ部が受け部に当たるため、第４図に示す
ように、エツジ部において欠け１０５が発生しや
すい。 In particular, the valve seat of a ball valve may wobble to some extent within the receiving portion due to changes in pressure due to opening and closing of the flow path or rotation of the valve body. During this rattling, the outer circumferential edge portion of the valve seat on the side where the contact surface is formed hits the receiving portion, and therefore, as shown in FIG. 4, chipping 105 is likely to occur at the edge portion.
（問題点を解決するための手段）
上記問題点を解決すべく本考案は、弁筺の受け
部にセラミツクス製のバルブシートを保持せしめ
たボールバルブにおいて、前記バルブシートの当
り面を形成した側の外周エツジ部を受け部から突
出せしめた。(Means for Solving the Problems) In order to solve the above problems, the present invention provides a ball valve in which a valve seat made of ceramics is held in a receiving part of a valve housing, on the side where the contact surface of the valve seat is formed. The outer peripheral edge portion of the holder is made to protrude from the receiving portion.
（作用）
バルブシートの外周エツジ部は受け部から突出
しているため、バルブシートがガタついて傾動し
ても、エツジ部は受け部に当らないため、欠けが
発生しない。(Function) Since the outer edge of the valve seat protrudes from the receiving portion, even if the valve seat wobbles and tilts, the edge does not hit the receiving portion, so no chipping occurs.
（実施例）
以下に本考案の実施例を添付図面に基いて説明
する。(Example) An example of the present invention will be described below based on the accompanying drawings.
第１図は本考案に係るボールバルブの縦断面図
であり、弁筺１は左右の半体１ａ，１ｂをボルト
２によつて結合することで内部に弁体収納空間Ｓ
を形成している。そして、空間Ｓ内にはアルミ
ナ、ジルコニア、窒化珪素、炭化珪素、サイアロ
ン等のセラミツクス材を焼成してなる弁体３を配
設している。この弁体３には弁筺１に形成した流
路４と同径の流路５が穿設され、その上部には平
面部を形成し、この平面部に金属製ジヨイント部
材６をろう付けにて接合し、このジヨイント部材
６に形成した凹部７にスピンドル８の下端を係合
している。 FIG. 1 is a longitudinal cross-sectional view of a ball valve according to the present invention, in which a valve housing 1 has a valve body storage space S inside by connecting left and right halves 1a and 1b with bolts 2.
is formed. A valve body 3 made of fired ceramic material such as alumina, zirconia, silicon nitride, silicon carbide, and sialon is disposed within the space S. This valve body 3 has a passage 5 having the same diameter as the passage 4 formed in the valve housing 1, and a flat part is formed at the upper part of the passage 5, and a metal joint member 6 is brazed to this flat part. The lower end of the spindle 8 is engaged with the recess 7 formed in the joint member 6.
スピンドル８は押え部材９を貫通して上方から
挿入され、その上端部には手動操作用のハンドル
１０又はアクチユエータが連結される。 The spindle 8 is inserted from above through the presser member 9, and a handle 10 for manual operation or an actuator is connected to its upper end.
一方、弁筺１を構成する左右の半体１ａ，１ｂ
の空間Ｓに臨む部分には段状をなす受け部１１，
１１を形成し、これら受け部１１，１１内にシー
ルリング１２，１２を介して前記同様の素材を焼
成してなるセラミツクス製バルブシート１３を保
持している。 On the other hand, the left and right halves 1a and 1b forming the valve housing 1
In the part facing the space S, there is a stepped receiving part 11,
11, and a ceramic valve seat 13 made of fired material similar to that described above is held within these receiving portions 11, 11 via seal rings 12, 12.
このバルブシート１３の内径寸法は前記流路
４，５と略等しくされ、その一面には弁体３に密
に接触する当り面１３ａを形成している。更に受
け部１１のうちバルブシート１３の外周面が当接
する部分の寸法T1はバルブシート１３の厚みT2
よりも小寸法とし、バルブシート１３の当り面１
３ａを形成した側の外周エツジ部１４が受け部１
１から突出するようにしている。 The inner diameter of the valve seat 13 is approximately equal to that of the flow channels 4 and 5, and a contact surface 13a that closely contacts the valve body 3 is formed on one surface thereof. Furthermore, the dimension T 1 of the portion of the receiving portion 11 that comes into contact with the outer peripheral surface of the valve seat 13 is the thickness T 2 of the valve seat 13.
The dimensions are smaller than the contact surface 1 of the valve seat 13.
The outer circumferential edge portion 14 on the side where 3a is formed is the receiving portion 1
I try to make it stand out from the beginning.
またバルブシート１３の一面側のエツジ部１４
及び他面側のエツジ部１５，１６についてはＣ面
取りを施し、組付けの際等に欠けが生じないよう
にしているが、当り面１３ａのエツジ部について
は面取りを行わず、流体中の異物が弁体３とバル
ブシート１３との間に食い込まないようにしてい
る。 Also, the edge portion 14 on one side of the valve seat 13
The edges 15 and 16 on the other side are chamfered to prevent chips from occurring during assembly, but the edges on the contact surface 13a are not chamfered to avoid foreign matter in the fluid. This prevents the valve from getting wedged between the valve body 3 and the valve seat 13.
以上において、ハンドル１０を回転操作するこ
とで、スピンドル８を介して弁体３を第１図に示
す状態から90°回転せしめると流路４が閉じられ、
流路４を閉じたことによる圧力変化等によつてバ
ルブシート１３は第２図に強調して示すように傾
動することがあるが、バルブシート１３のうち最
も欠けやすいエツジ部１４は受け部１１に当らな
いため、傾動（ガタつき）による衝撃を受けず、
エツジ部１４が欠けることがない。 In the above, when the valve body 3 is rotated by 90 degrees from the state shown in FIG. 1 via the spindle 8 by rotating the handle 10, the flow path 4 is closed.
The valve seat 13 may tilt as shown in FIG. 2 due to pressure changes caused by closing the flow path 4, but the edge portion 14 of the valve seat 13 that is most likely to chip is the receiving portion 11. Because it does not hit the ground, it is not affected by shock due to tilting (rattling).
The edge portion 14 will not be chipped.
尚、バルブシート１３のエツジ部１４を突出せ
しめるには、バルブシート１３の厚みを大とする
か、弁筐１の受け部１１の肉厚を薄くするかいず
れでもよく、また当り面１３ａを形成した側と反
対側のエツジ部をも受け部から突出せしめるよう
にしてもよい。 In order to make the edge portion 14 of the valve seat 13 protrude, either the thickness of the valve seat 13 may be increased or the thickness of the receiving portion 11 of the valve housing 1 may be made thinner, and the contact surface 13a may be formed. The edge portion on the opposite side may also be made to protrude from the receiving portion.
（考案の効果）
以上に説明した如く本考案によれば、セラミツ
クス製バルブシートの最も欠けやすい外周エツジ
部を弁筐に形成した受け部から突出せしめるよう
にしたため、弁体の開閉動作或いは流体の圧力変
動に伴つてバルブシートがガタついてもエツジ部
に欠けが生じることがなくボールバルブとしての
寿命が大巾に向上する。(Effects of the invention) As explained above, according to the invention, the outer peripheral edge of the ceramic valve seat, which is most prone to chipping, is made to protrude from the receiving part formed in the valve casing. Even if the valve seat rattles due to pressure fluctuations, there will be no chipping at the edges, greatly extending the life of the ball valve.
第１図は本考案に係るボールバルブの縦断面
図、第２図はバルブシートの動作を強調して示し
た拡大図、第３図は従来のボールバルブの縦断面
図、第４図は従来のバルブシートの動作を強調し
て示した拡大図である。
尚、図面中１は弁筺、３は弁体、４，５は流
路、６はジヨイント部材、１１は受け部、１３は
バルブシート、１３ａは当り面、１４はエツジ部
である。
Fig. 1 is a longitudinal sectional view of the ball valve according to the present invention, Fig. 2 is an enlarged view emphasizing the operation of the valve seat, Fig. 3 is a longitudinal sectional view of the conventional ball valve, and Fig. 4 is the conventional ball valve. FIG. 2 is an enlarged view emphasizing the operation of the valve seat of FIG. In the drawings, 1 is a valve housing, 3 is a valve body, 4 and 5 are channels, 6 is a joint member, 11 is a receiving part, 13 is a valve seat, 13a is a contact surface, and 14 is an edge part.
Claims (1)
持し、このバルブシートに形成した当り面にて弁
体を回転自在に支持するようにしたボールバルブ
において、前記バルブシートはセラミツクス材か
らなり、更にバルブシートの当り面を形成した側
の外周エツジ部は弁筺に形成した受け部から突出
していることを特徴とするボールバルブ。 In a ball valve in which an annular valve seat is held in a receiving portion formed in a valve housing, and a valve body is rotatably supported by a contact surface formed in the valve seat, the valve seat is made of a ceramic material, and further A ball valve characterized in that an outer peripheral edge portion of the valve seat on the side forming the contact surface protrudes from a receiving portion formed in the valve housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15122886U JPH047404Y2 (en) | 1986-10-01 | 1986-10-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15122886U JPH047404Y2 (en) | 1986-10-01 | 1986-10-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6357867U JPS6357867U (en) | 1988-04-18 |
| JPH047404Y2 true JPH047404Y2 (en) | 1992-02-27 |
Family
ID=31068105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15122886U Expired JPH047404Y2 (en) | 1986-10-01 | 1986-10-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH047404Y2 (en) |
-
1986
- 1986-10-01 JP JP15122886U patent/JPH047404Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6357867U (en) | 1988-04-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5088687A (en) | Ball valve seat for high temperature service | |
| JP2556972B2 (en) | valve | |
| JP2787726B2 (en) | Butterfly valve | |
| US4366785A (en) | Tappet with wear resisting insert | |
| KR100558835B1 (en) | Valve plug and valve provided therewith | |
| CA2129330A1 (en) | Sealing assembly for valve member | |
| JPH047404Y2 (en) | ||
| US5181691A (en) | Mechanical part made of ceramics | |
| US5435521A (en) | Ball valve with rinsing action | |
| JPH01316571A (en) | Adjusting ball cock with casing, flow path, cock ball and adjusting spindle | |
| JPH047402Y2 (en) | ||
| JPS6325427Y2 (en) | ||
| EP0473243B1 (en) | Butterfly valve to prevent dew condensation therefrom | |
| JPH0714702Y2 (en) | Ball valve | |
| RU2002108740A (en) | SHUT-OFF VALVE | |
| JPH0341200Y2 (en) | ||
| JPS6388381A (en) | Ball valve | |
| JPH0875014A (en) | Valve seat device in eccentric butterfly valve | |
| JPH076579B2 (en) | Shaft seal device | |
| JPH0532701Y2 (en) | ||
| JPS6230624Y2 (en) | ||
| JPH0434282Y2 (en) | ||
| JPS6333022Y2 (en) | ||
| JP3360981B2 (en) | Tappet | |
| FI74335B (en) | VALVE AV VRIDTYP, SAOSOM KULVENTILER ELLER KRANAR. |