JPH042832B2 - - Google Patents
Info
- Publication number
- JPH042832B2 JPH042832B2 JP6943486A JP6943486A JPH042832B2 JP H042832 B2 JPH042832 B2 JP H042832B2 JP 6943486 A JP6943486 A JP 6943486A JP 6943486 A JP6943486 A JP 6943486A JP H042832 B2 JPH042832 B2 JP H042832B2
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- groove
- soft elastic
- elastic sheet
- hard
- 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
- 230000005489 elastic deformation Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Lift Valve (AREA)
- Sliding Valves (AREA)
- Taps Or Cocks (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、シート取付用の溝に、高圧時のシー
ル性の高い硬質シートと低圧時のシール性の高い
軟質弾性シートを重ねて圧入し、前記溝の一側面
に、硬質シートを抜け止めするための係合部を形
成すると共に、他側面に、軟質弾性シートをその
弾性変形により抜け止めさせるための係止部を形
成してある弁箱シートの取付構造に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention is characterized in that a hard sheet with high sealing performance at high pressure and a soft elastic sheet with high sealing performance at low pressure are overlapped and press-fitted into a seat mounting groove. , a valve having an engaging part formed on one side of the groove to prevent the hard sheet from coming off, and a locking part formed on the other side to prevent the soft elastic sheet from coming off by elastic deformation. Regarding the mounting structure of the box sheet.
従来、上記取付構造では、第５図に示すよう
に、溝６の底面１３を平坦面に形成してあつた。
Conventionally, in the above mounting structure, the bottom surface 13 of the groove 6 was formed to be a flat surface, as shown in FIG.
しかし、溝６に対して硬質シート８と軟質弾性
シート１０が圧入しやすい様に、軟質弾性シート
１０を溝６内に挿入してから硬質シート８を溝６
内に押し込むと、軟質弾性シート１０が硬質シー
ト８に押されて、硬質シート８先端と溝底面１３
との間にまわり込み、硬質シート８を溝６内に充
分押込むことが出来なかつたり、軟質弾性シート
１０が破断して、弁箱シート４のシート不良が生
じやすくなる危険性があつた。
However, in order to easily press fit the hard sheet 8 and the soft elastic sheet 10 into the groove 6, the soft elastic sheet 10 is inserted into the groove 6, and then the hard sheet 8 is inserted into the groove 6.
When pushed in, the soft elastic sheet 10 is pushed against the hard sheet 8, and the tip of the hard sheet 8 and the groove bottom surface 13
There was a risk that the hard sheet 8 could not be sufficiently pushed into the groove 6, or that the soft elastic sheet 10 would break and the valve box sheet 4 would become defective.
本発明の目的は、溝内に硬質シートを押込む際
に、軟質弾性シートが硬質シート先端と溝底面と
の間に、まわり込まないようにする点にある。 An object of the present invention is to prevent the soft elastic sheet from wrapping around between the tip of the hard sheet and the bottom surface of the groove when the hard sheet is pushed into the groove.
本発明の弁箱シートの取付構造の特徴構成は、
シート取付用の溝の底面で係止部側に、軟質弾性
シート先端の嵌入用凹部を形成してあることにあ
り、その作用効果は、次の通りである。
The characteristic configuration of the valve box seat mounting structure of the present invention is as follows:
A recess for inserting the tip of the soft elastic sheet is formed on the bottom surface of the seat mounting groove on the locking part side, and its effects are as follows.
つまり、溝内に軟質弾性シートを挿入してから
硬質シートを押込むと、軟質弾性シートが硬質シ
ートに押されても、その先端が溝底面に形成して
ある凹部に嵌入してしまつて、軟質弾性シートが
硬質シート先端と溝底面との間にまわり込むこと
はない。
In other words, if you insert a soft elastic sheet into a groove and then push a hard sheet, even if the soft elastic sheet is pushed by the hard sheet, its tip will fit into the recess formed on the bottom of the groove. The soft elastic sheet does not wrap around between the tip of the hard sheet and the bottom surface of the groove.
従つて、溝内に硬質シートと軟質弾性シート
を、共に溝底面に接当するまで押込んで、両シー
トを溝から抜けにくくしやすくでき、また、硬質
シートの押込みに伴う軟質弾性シートの変形を少
なくして、軟質弾性シートの破断を抑制でき、弁
箱内の圧力の高低にかかわらず、弁箱シートによ
るシート性を良好に維持できるようになつた。
Therefore, it is possible to push both the hard sheet and the soft elastic sheet into the groove until they come into contact with the bottom surface of the groove, making it difficult for both sheets to come out of the groove. By reducing the amount, breakage of the soft elastic sheet can be suppressed, and the sheet properties of the valve box sheet can be maintained satisfactorily regardless of the level of pressure inside the valve box.
次に、本発明の実施例を、図面に基づいて説明
する。
Next, embodiments of the present invention will be described based on the drawings.
第３図に示すように、弁箱１に、弁箱内流路Ｆ
を連通する流路孔ｆを形成した鋼製ボール弁体２
を内装し、そのボール弁体２を開弁位置と閉弁位
置とにわたつて回転操作する弁棒３を弁箱１に貫
通支承し、ボール弁体２の球面状シート部２ａと
の接触によりシール作用する一対の弁箱側環状メ
タルシート４を炭素鋼等で形成して設け、もつ
て、ボール弁を構成してある。 As shown in FIG.
A steel ball valve body 2 having a flow passage hole f communicating with the
A valve stem 3 that rotates the ball valve body 2 between an open position and a closed position is supported through the valve body 1, and by contact with the spherical seat portion 2a of the ball valve body 2, A pair of annular metal sheets 4 on the valve box side, which act as a seal, are made of carbon steel or the like, and together constitute a ball valve.
前記弁箱１を、弁箱内流路Ｆに直交する面で二
分割形成すると共に、それら分割部分を複数本の
ボルト５により一体化し、もつて、弁内部の点検
補修を容易に行えるように構成してある。また、
弁箱１は二分割したものを溶接にて接合形成して
も良い。 The valve box 1 is formed into two parts on a plane perpendicular to the flow path F in the valve box, and these divided parts are integrated with a plurality of bolts 5, so that inspection and repair of the inside of the valve can be easily performed. It is configured. Also,
The valve body 1 may be divided into two parts and joined together by welding.
第４図に示すように、前記弁箱側環状メタルシ
ート４を、弁体シート部２ａに対する遠近方向に
のみ摺動自在な状態で、弁箱１に装着すると共
に、その装着状態において、弁箱１側を反力支点
として弁箱側環状メタルシート４を弁体シート部
２ａに対する圧接側に常時弾性付勢するバネ７の
複数を、弁箱側環状メタルシート４の背面に、そ
の周方向に等間隔に分散配置して付設し、もつ
て、それらバネ７による周方向に均一な弾性付勢
作用により良好なシール状態を維持できるように
構成してある。 As shown in FIG. 4, the valve body side annular metal sheet 4 is attached to the valve body 1 in a state in which it is slidable only in the distance direction with respect to the valve body seat portion 2a, and in the attached state, the valve body side annular metal sheet 4 is A plurality of springs 7 are provided on the back surface of the valve body side annular metal sheet 4 in the circumferential direction thereof, and the springs 7 always elastically bias the valve body side annular metal sheet 4 toward the pressure contact side with respect to the valve body seat portion 2a with the first side as a reaction force fulcrum. The springs 7 are arranged at equal intervals and are arranged so that a good sealing state can be maintained by the uniform elastic biasing action of the springs 7 in the circumferential direction.
図中９は、Ｏリングである。 9 in the figure is an O-ring.
前記弁箱側環状メタルシート４において、第１
図ないし第４図に示すように、弁体シート部２ａ
に対向する面部分に、弁体シート部２ａに密接し
てシール性を上げるためのPTFE（テスロン）
から成る硬質シート８とゴムから成る軟質弾性シ
ート１０を、重ねて圧入するシート取付用の環状
溝６を形成し、その溝６の一側面に、硬質シート
８を抜け止めしやすくするための突起１１を形成
すると共に、他側面に、軟質弾性シート１０をそ
の弾性変形により係入させて抜け止めさせるため
の複数の凹み１２を形成して、硬質シート８の溝
６内への押込みの際に、加わる変形力によつて軟
質弾性シート１０が、破断されにくくしてある。 In the valve box side annular metal sheet 4, the first
As shown in the figures to FIG. 4, the valve body seat portion 2a
PTFE (Teslon) is placed on the surface facing the valve body seat part 2a to improve sealing performance.
An annular groove 6 is formed for attaching a hard sheet 8 made of a material and a soft elastic sheet 10 made of rubber to be press-fitted one on top of the other, and a projection is provided on one side of the groove 6 to help prevent the hard sheet 8 from slipping out. 11, and a plurality of recesses 12 are formed on the other side surface to allow the soft elastic sheet 10 to engage through its elastic deformation and prevent it from coming out, so that when the hard sheet 8 is pushed into the groove 6. The soft elastic sheet 10 is made difficult to break due to the applied deformation force.
尚、前記突起１１は、溝６入口側より底側の面
が急斜面になるように形成してある。 The protrusion 11 is formed so that the surface on the bottom side from the entrance side of the groove 6 is a steep slope.
そして、溝６の底面で前記凹み１２形成側に、
軟質弾性シート１０先端の嵌入用凹部６Ａを、溝
６に沿つて環状に形成してある。 Then, on the bottom surface of the groove 6 on the side where the recess 12 is formed,
A fitting recess 6A at the tip of the soft elastic sheet 10 is formed in an annular shape along the groove 6.
つまり、溝６内への面シート８，１０圧入過程
と、その状態を示すと、第２図イに示すように、
溝６内に軟質弾性シート１０を挿入しておいてか
ら、硬質シート８を軟質弾性シート１０と重ね合
わせて押し込むと、第２図ロに示すように、軟質
弾性シート１０先端は、凹部６Ａに嵌入して位置
固定され、硬質シート８先端と溝６の底面１３と
の間には入り込まない。そして、両シート８，１
０が、夫々溝６の底面１３及び凹部６Ａ底面に接
当した後、更に圧入すると、第２図ハに示すよう
に、硬質シート８に突起１１は強固に喰い込み、
軟質弾性シート１０は均一に圧縮されながら複数
の凹み１２に係入して、両シート８，１０が溝６
側面に密着し、抜け止めが完了する。 In other words, the process of press-fitting the face sheets 8 and 10 into the groove 6 and the state thereof are as shown in FIG.
After inserting the soft elastic sheet 10 into the groove 6, when the hard sheet 8 is overlapped with the soft elastic sheet 10 and pushed in, the tip of the soft elastic sheet 10 is inserted into the recess 6A as shown in FIG. It is fitted and fixed in position, and does not enter between the tip of the hard sheet 8 and the bottom surface 13 of the groove 6. And both seats 8,1
0 comes into contact with the bottom surface 13 of the groove 6 and the bottom surface of the recess 6A, respectively, and is further press-fitted. As shown in FIG.
The soft elastic sheet 10 is compressed uniformly and engages in the plurality of recesses 12, so that both sheets 8 and 10 fit into the grooves 6.
It sticks to the sides and is completely prevented from falling out.
前記溝６内に、両シート８，１０を圧入した後
は、両シート８，１０の後端側突出部を、弁体シ
ート部２ａに密接しやすい所定形状に加工すれば
良い。 After both the seats 8 and 10 are press-fitted into the groove 6, the protrusions on the rear end side of both the seats 8 and 10 may be processed into a predetermined shape that allows them to come into close contact with the valve body seat portion 2a.
尚、弁体シート部２ａに密接する硬質シート８
は、高圧時のシール性を向上すると共に、軟質シ
ート１０は、低圧時のシール性を向上するだけで
なく、弁体シート部２ａの掃除作用をも果たす。 In addition, the hard seat 8 that is in close contact with the valve body seat portion 2a
The soft sheet 10 not only improves the sealing performance at high pressures, but also improves the sealing performance at low pressures, and also performs a cleaning action on the valve body seat portion 2a.
前記硬質シート８は、PTFE以外にナイロン
から形成しても良く、また、軟質弾性シート１０
は、ゴム以外の弾性樹脂から形成しても良い。
The hard sheet 8 may be made of nylon other than PTFE, and the soft elastic sheet 10 may be made of nylon.
may be formed from an elastic resin other than rubber.
前記突起１１を係合部と称すると共に、前記凹
み１２を係止部と称し、それらの形状は、各種変
形可能である。 The protrusion 11 is called an engaging part, and the recess 12 is called a locking part, and their shapes can be modified in various ways.
本発明の弁箱シートは、ボール弁以外のゲート
弁等、各種の弁に使用できるものである。 The valve box sheet of the present invention can be used for various valves such as gate valves other than ball valves.
図面は本発明に係る弁箱シート取付構造の実施
例を示し、第１図は要部断面図、第２図イ，ロ，
ハは取付順を示す作用説明図、第３図はボール弁
の全体断面図、第４図は要部斜視図、第５図は従
来例の要部断面図である。
６……溝、６Ａ……凹部、８……硬質シート、
１０……軟質弾性シート、１１……係合部、１２
……係止部。
The drawings show an embodiment of the valve box seat mounting structure according to the present invention, and FIG. 1 is a sectional view of the main part, and FIG.
3 is an overall sectional view of the ball valve, FIG. 4 is a perspective view of the main part, and FIG. 5 is a sectional view of the main part of a conventional example. 6...Groove, 6A...Recess, 8...Hard sheet,
10... Soft elastic sheet, 11... Engaging portion, 12
...Locking part.
Claims (1)
弾性シート１０を重ねて圧入し、前記溝６の一側
面に、硬質シート８を抜け止めするための係合部
１１を形成すると共に、他側面に、軟質弾性シー
ト１０をその弾性変形により抜け止めさせるため
の係止部１２を形成してある弁箱シートの取付構
造であつて、前記溝６の底面で前記係止部１２側
に、前記軟質弾性シート１０先端の嵌入用凹部６
Ａを形成してある弁箱シートの取付構造。1. A hard sheet 8 and a soft elastic sheet 10 are stacked and press-fitted into the sheet mounting groove 6, and an engaging portion 11 for preventing the hard sheet 8 from coming off is formed on one side of the groove 6, and the other This is a valve box seat mounting structure in which a locking part 12 is formed on the side surface to prevent the soft elastic sheet 10 from coming off by elastic deformation, and the bottom surface of the groove 6 has a locking part 12 on the side of the locking part 12. Fitting recess 6 at the tip of the soft elastic sheet 10
Mounting structure of the valve box seat forming A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6943486A JPS62228764A (en) | 1986-03-27 | 1986-03-27 | Valve box seat mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6943486A JPS62228764A (en) | 1986-03-27 | 1986-03-27 | Valve box seat mounting structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62228764A JPS62228764A (en) | 1987-10-07 |
| JPH042832B2 true JPH042832B2 (en) | 1992-01-21 |
Family
ID=13402524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6943486A Granted JPS62228764A (en) | 1986-03-27 | 1986-03-27 | Valve box seat mounting structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62228764A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH022566U (en) * | 1988-06-17 | 1990-01-09 |
-
1986
- 1986-03-27 JP JP6943486A patent/JPS62228764A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62228764A (en) | 1987-10-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |