JPH11118042A - Fluid sealing device - Google Patents
Fluid sealing deviceInfo
- Publication number
- JPH11118042A JPH11118042A JP9296453A JP29645397A JPH11118042A JP H11118042 A JPH11118042 A JP H11118042A JP 9296453 A JP9296453 A JP 9296453A JP 29645397 A JP29645397 A JP 29645397A JP H11118042 A JPH11118042 A JP H11118042A
- Authority
- JP
- Japan
- Prior art keywords
- packing
- mounting groove
- sealing device
- fluid sealing
- holding plate
- 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
- Details Of Valves (AREA)
- Sealing With Elastic Sealing Lips (AREA)
- Sealing Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、流体弁等のハウジ
ングの挿通孔に軸を挿通させた場合に、軸の周囲を通っ
て流れようとする流体を封じ込める流体封止装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid sealing device for containing a fluid that flows around a shaft when the shaft is inserted into a through hole of a housing such as a fluid valve.
【０００２】[0002]
【従来の技術】図２(a) は従来の流体封止装置（その
１）を備えたバルブ１を示し、バルブ１は弁本体２、中
間部材３（ハウジング）及びシリンダ部材４から構成さ
れている。シリンダ部材４には下端が開放された段付孔
が形成され、段付孔の中径孔に操作ピストン５が摺動自
在に嵌合され、操作ピストン５と段付孔の小径孔の上端
との間にスプリング６が装着され、操作ピストン５はス
プリング６によって下方へ付勢されている。シリンダ部
材４の段付孔の中径孔と大径孔との間に環状溝が形成さ
れ、この環状溝にストッパー７が装着され、大径孔に中
間部材３の大径部が嵌合されている。中間部材３には大
径部の下側にフランジ及び小径部があり、中間部材３の
フランジ及び小径部に弁本体２の上部開口部が嵌合され
ている。中間部材３の大径部の外周とシリンダ部材４の
大径部の内周との間はＯリング51により密封され、中間
部材３の小径部の外周と弁本体２の開口部の内周との間
はＯリング52により密封され、Ｏリング51，52はともに
中間部材３のＯリング装着溝内に装着されている。2. Description of the Related Art FIG. 2A shows a valve 1 provided with a conventional fluid sealing device (part 1). The valve 1 comprises a valve body 2, an intermediate member 3 (housing) and a cylinder member 4. I have. A stepped hole having an open lower end is formed in the cylinder member 4, and the operation piston 5 is slidably fitted in the medium diameter hole of the stepped hole, and the operation piston 5 and the upper end of the small diameter hole of the stepped hole are formed. The operating piston 5 is urged downward by the spring 6. An annular groove is formed between the medium-diameter hole and the large-diameter hole of the stepped hole of the cylinder member 4, the stopper 7 is mounted in this annular groove, and the large-diameter portion of the intermediate member 3 is fitted into the large-diameter hole. ing. The intermediate member 3 has a flange and a small diameter portion below the large diameter portion, and the upper opening of the valve body 2 is fitted to the flange and the small diameter portion of the intermediate member 3. The space between the outer periphery of the large diameter portion of the intermediate member 3 and the inner periphery of the large diameter portion of the cylinder member 4 is sealed by an O-ring 51, and the outer periphery of the small diameter portion of the intermediate member 3 and the inner periphery of the opening of the valve body 2 The space between them is sealed by an O-ring 52, and the O-rings 51, 52 are both mounted in the O-ring mounting groove of the intermediate member 3.
【０００３】中間部材３の中央に上下を貫通する挿通孔
10及びパッキン装着溝14が形成され、パッキン装着溝14
に２個のＶパッキン15Ａ，15Ｂが装着されている。挿通
孔10及びＶパッキン15Ａ，15Ｂには弁操作用の軸11が挿
通され、軸11の上端部はピストン５に連結され、軸11の
下端部は弁体12に連結されている。挿通孔10の上方部の
環状溝にＯリング53が装着され、Ｏリング53によって軸
11の表面と挿通孔10の内面との間が密封されている。挿
通孔10の上下方向の中間部から下端にかけて環状のパッ
キン装着溝14が形成されており、パッキン装着溝14の下
端は開放されている。パッキン装着溝14の上端の断面は
略山型をしており、Ｖパッキン15Ａの上面はパッキン装
着溝14の上面にぴったりと嵌合している。Ｖパッキン15
Ｂの下側に環状の案内板16が装着され、案内板16の上面
はＶパッキン15Ｂの下面にぴったりと嵌合している。パ
ッキン装着溝14の下端部の環状溝にストッパー17が装着
され、Ｖパッキン15Ａ，15Ｂ及び案内板16の抜け出しが
防止されている。[0003] An insertion hole penetrating vertically through the center of the intermediate member 3
10 and packing mounting groove 14 are formed.
Are mounted with two V-packings 15A, 15B. A shaft 11 for operating a valve is inserted through the insertion hole 10 and the V packings 15A and 15B. The upper end of the shaft 11 is connected to the piston 5, and the lower end of the shaft 11 is connected to the valve body 12. An O-ring 53 is mounted in an annular groove above the insertion hole 10, and the O-ring 53
The space between the surface of 11 and the inner surface of the insertion hole 10 is sealed. An annular packing mounting groove 14 is formed from a vertically intermediate portion to a lower end of the insertion hole 10, and the lower end of the packing mounting groove 14 is open. The cross section of the upper end of the packing mounting groove 14 has a substantially mountain shape, and the upper surface of the V packing 15A fits exactly with the upper surface of the packing mounting groove 14. V packing 15
An annular guide plate 16 is attached to the lower side of B, and the upper surface of the guide plate 16 fits exactly on the lower surface of the V-packing 15B. A stopper 17 is mounted in an annular groove at the lower end of the packing mounting groove 14 to prevent the V-packings 15A, 15B and the guide plate 16 from coming off.
【０００４】シリンダ部材４にはＡポート18及びＢポー
ト19が形成されており、Ａポート18及びＢポート19を介
して段付の中径孔に給排される操作流体によってピスト
ン５が移動する。ピストン５の移動は軸11を介して弁体
12に伝えられ、弁体12の移動によってバルブ１が開閉さ
れる。このバルブ１は高圧の水蒸気や油の移動を制御す
るものであり、20は流体入口、21は流体出口、22は弁座
である。なお、中間部材３の挿通孔10のパッキン装着溝
14とＯリング53のＯリング装着溝との間は、逃がし孔23
及び逃がし口24を介して大気に連通されており、軸11と
Ｖパッキン15との間を漏洩した流体は逃がし孔23及び逃
がし口24を通って大気に排出される。An A port 18 and a B port 19 are formed in the cylinder member 4, and the piston 5 is moved by operating fluid supplied and discharged to a stepped medium-diameter hole through the A port 18 and the B port 19. . The movement of the piston 5 is performed via the shaft 11
The valve 1 is opened and closed by the movement of the valve body 12. The valve 1 controls the movement of high-pressure steam or oil, 20 is a fluid inlet, 21 is a fluid outlet, and 22 is a valve seat. The packing mounting groove of the through hole 10 of the intermediate member 3
A clearance hole 23 is provided between 14 and the O-ring mounting groove of the O-ring 53.
The fluid leaking between the shaft 11 and the V-packing 15 is discharged to the atmosphere through the escape hole 23 and the escape port 24.
【０００５】図２(b) は従来の水蒸気用の流体封止装置
（その２）を示す。図２(b) において、図２(a) と同一
の部分には図２(a) と同一の符号を用いる。ハウジング
27に挿通孔10及びパッキン装着溝14が形成されており、
パッキン装着溝14には３種類のＶパッキン28〜31が装着
されており、挿通孔10及びＶパッキン28〜31には軸11が
挿通されている。図２(b) の場合は、ハウジング27の上
面は大気に接触しているので、逃がし孔は設けられず、
パッキン装着溝14を形成しているハウジング27は、パイ
プ状に上方へ突出し、上端に環状部を接続した形状とな
っている。可動用の軸11をシールするため、高温酸化に
対する耐性が高いふっ素ゴム（ＦＫＭ）製のＶパッキン
28が大気側に装着され、自己潤滑とシールを兼ねた弗素
樹脂製のＶパッキン29が大気側から２番目に装着され、
高温酸化には弱いが水蒸気に対する耐性が高いエチレン
・プロピレンゴム（ＥＰＤＭ）製のＶパッキン30が大気
側から３番目に装着され、弗素樹脂製のＶパッキン31が
大気側から４番目に装着されている。これらのＶパッキ
ン28〜31は相互にぴったりと接合され、ＦＫＭ製のＶパ
ッキン28の上面はパッキン装着溝14の上端面にぴったり
と嵌合されている。FIG. 2B shows a conventional fluid sealing device for water vapor (part 2). 2 (b), the same parts as those in FIG. 2 (a) are denoted by the same reference numerals as in FIG. 2 (a). housing
27, the insertion hole 10 and the packing mounting groove 14 are formed,
Three types of V packings 28 to 31 are mounted in the packing mounting groove 14, and the shaft 11 is inserted through the insertion hole 10 and the V packings 28 to 31. In the case of FIG. 2B, since the upper surface of the housing 27 is in contact with the atmosphere, no escape hole is provided.
The housing 27 forming the packing mounting groove 14 protrudes upward in a pipe shape, and has a shape in which an annular portion is connected to an upper end. V-packing made of fluoro rubber (FKM) with high resistance to high-temperature oxidation to seal the movable shaft 11
28 is mounted on the atmosphere side, and a V-packing 29 made of fluororesin, which also serves as a self-lubrication and seal, is mounted second from the atmosphere side,
A V-packing 30 made of ethylene propylene rubber (EPDM), which is weak against high-temperature oxidation but has high resistance to water vapor, is mounted third from the air side, and a V-packing 31 made of fluororesin is mounted fourth from the air side. I have. These V-packings 28 to 31 are tightly joined to each other, and the upper surface of the VKM 28 made of FKM is fitted in the upper end surface of the packing mounting groove 14 exactly.
【０００６】弗素樹脂製のＶパッキン31の下側に案内板
16Ａが装着され、案内板16Ａの上面は弗素樹脂製のＶパ
ッキン31の下面にぴったりと嵌合している。パッキン装
着溝14の下端部の環状溝にストッパー17が装着され、Ｖ
パッキン28〜31及び案内板16の抜け出しが防止されてい
る。案内板16Ａの下端部に外周及び下端が開放された環
状溝が形成され、この環状溝の上壁とストッパー17との
間にスプリング32が装着されている。スプリング32の付
勢力が案内板16Ａを介してＶパッキン28〜31に伝えら
れ、この付勢力がＶパッキン28〜31と軸11及びパッキン
装着溝14との間の適切なシール力となっている。しかも
スプリング32の付勢力によって、フッ素樹脂製のＶパッ
キン29、31のクリープによる変形が最小にされ、Ｖパッ
キン28〜31の整形効果が得られる。スプリング32とし
て、ここでは重ね板ばねが使用されているが、円筒コイ
ルスプリングを用いることがあり、その場合には流体封
止装置の縦方向の長さが更に長くなる。A guide plate is provided below the V packing 31 made of fluororesin.
The upper surface of the guide plate 16A is fitted to the lower surface of a V-packing 31 made of fluororesin. A stopper 17 is mounted in the annular groove at the lower end of the packing mounting groove 14,
The escape of the packings 28 to 31 and the guide plate 16 is prevented. An annular groove whose outer periphery and lower end are opened is formed at the lower end of the guide plate 16A, and a spring 32 is mounted between the upper wall of the annular groove and the stopper 17. The biasing force of the spring 32 is transmitted to the V-packings 28 to 31 via the guide plate 16A, and this biasing force provides an appropriate sealing force between the V-packings 28 to 31 and the shaft 11 and the packing mounting groove 14. . In addition, the urging force of the spring 32 minimizes the deformation of the fluororesin V-packings 29, 31 due to creep, and the shaping effect of the V-packings 28-31 is obtained. Although a leaf spring is used as the spring 32 here, a cylindrical coil spring may be used, in which case the length of the fluid sealing device in the longitudinal direction is further increased.
【０００７】[0007]
【発明が解決しようとする課題】本発明は、流体封止装
置の長さを短くして小型化を図り、かつ流体封止装置の
部品数を減らしてコストの低減を図ることを課題とす
る。SUMMARY OF THE INVENTION An object of the present invention is to reduce the length of a fluid sealing device to reduce its size, and to reduce the number of parts of the fluid sealing device to reduce the cost. .
【０００８】[0008]
【課題を解決するための手段】本発明は、ハウジング(2
7)に挿通孔(10)及びパッキン装着溝(14)が形成され、パ
ッキン装着溝(14)にＶパッキン(28)〜(31)が装着され、
挿通孔(10)及びＶパッキン(28)〜(31)に軸(11)が挿通さ
れ、Ｖパッキン(28)〜(31)によりハウジング(27)のパッ
キン装着溝(14)の内部と軸(11)の表面との間が密封され
る流体封止装置において、パッキン装着溝(14)の開口部
近傍に弾性材料製の押さえ板(36)が係着され、Ｖパッキ
ン(28)〜(31)は押さえ板(36)の弾性によってシール力が
付与されパッキン装着溝(14)に維持されていることを第
１の構成とする。本発明は、第１の構成において、押さ
え板(36)の外周部には複数個のばね部(37)が突出され、
押さえ板(36)の案内部(38)とばね部(37)の側部との間に
隙間(39)が形成され、押さえ板(36)のＶパッキン側の面
がＶパッキン(28)〜(31)の押さえ板側の面にぴったりと
接合されたことを第２の構成とする。本発明は、第２の
構成において、ばね部(37)の先端がパッキン装着溝(14)
の開口部の壁面に係着され、又はばね部(37)の先端部が
パッキン装着溝(14)の開口部に形成された環状溝に係合
され、又はばね部(37)の先端部がパッキン装着溝(14)の
開口部に隣接して形成されたパッキン装着溝(14)より大
径の係合溝(35)に係合されたことを第３の構成とする。
本発明は、第１〜第３の構成において、パッキン装着溝
(14)にＦＫＭ製のＶパッキン(28)、弗素樹脂製のＶパッ
キン(29),(31) 及びＥＰＤＭ製のＶパッキン(30)が装着
され、押さえ板(36)の弾性力によって、Ｖパッキン(28)
〜(31)とパッキン装着溝(14)の内面及び軸(11)の表面と
の間に適切なシール力が付与され、弗素樹脂製のＶパッ
キン(29),(31) のクリープによる変形が最小にされるこ
とを第４の構成とする。SUMMARY OF THE INVENTION The present invention relates to a housing (2
7) is formed with an insertion hole (10) and a packing mounting groove (14), V packings (28) to (31) are mounted in the packing mounting groove (14),
The shaft (11) is inserted through the insertion hole (10) and the V packings (28) to (31), and the inside of the packing mounting groove (14) of the housing (27) and the shaft ( In the fluid sealing device in which the space between the gasket and the surface of (11) is sealed, a pressing plate (36) made of an elastic material is engaged near the opening of the packing mounting groove (14), and V packings (28) to (31) are provided. ) Has a first configuration in which the sealing force is applied by the elasticity of the holding plate (36) and the sealing force is maintained in the packing mounting groove (14). According to the present invention, in the first configuration, a plurality of spring portions (37) project from an outer peripheral portion of the holding plate (36),
A gap (39) is formed between the guide portion (38) of the holding plate (36) and the side of the spring portion (37), and the surface of the holding plate (36) on the V packing side is V packing (28)- The second structure is that the structure (31) is exactly joined to the surface on the holding plate side. According to the second aspect of the present invention, in the second configuration, the tip of the spring portion (37) is provided with the packing mounting groove (14).
The tip of the spring portion (37) is engaged with an annular groove formed in the opening of the packing mounting groove (14), or the tip of the spring portion (37) is The third configuration is that the engagement groove (35) formed adjacent to the opening of the packing mounting groove (14) is engaged with the engaging groove (35) having a larger diameter than the packing mounting groove (14).
The present invention provides, in the first to third configurations, a packing mounting groove.
(14) FKM V packing (28), fluorine resin V packing (29), (31) and EPDM V packing (30) are attached. Packing (28)
(31) and the inner surface of the packing mounting groove (14) and the surface of the shaft (11) are provided with an appropriate sealing force. What is minimized is a fourth configuration.
【０００９】[0009]
【発明の実施の形態】図１は本発明の流体封止装置の実
施の形態を示す。実施の形態の説明において、従来例と
同一の部分には従来例と同一の符号を付す。ハウジング
27に挿通孔10、パッキン装着溝14及び係合溝35がハウジ
ング27の表面から裏面に順次に隣接して形成されてお
り、係合溝35はパッキン装着溝14より大径である。パッ
キン装着溝14には３種類のＶパッキン28〜31が装着さ
れ、挿通孔10、パッキン装着溝14及び係合溝35には軸11
が挿通されている。図２(b) の場合と同様に、ハウジン
グ27の上面は大気に接触し、パッキン装着溝14を形成す
るハウジング27はパイプ状に突出し、上端に環状部を接
続した形状となっている。可動用の軸11をシールするた
め、図２(b) の流体封止装置（その２）の場合と同じＶ
パッキン28〜31がパッキン装着溝14に装着されている。
大気側のふっ素ゴム（ＦＫＭ）製のＶパッキン28の上面
とパッキン装着溝14の上内面とは、対向面の凹凸が逆に
形成されており、Ｖパッキン28の上面とパッキン装着溝
14の上内面とがぴったりと接合されている。同様にＶパ
ッキン28〜31は、相互に接合する２つの面は、対向面の
凹凸が逆に形成されており、Ｖパッキン28〜31が相互に
ぴったりと接合されている。なお、ハウジング27は弁本
体と一体であっても別体であってもよい。FIG. 1 shows an embodiment of a fluid sealing device according to the present invention. In the description of the embodiments, the same parts as those of the conventional example are denoted by the same reference numerals. housing
The insertion hole 10, the packing mounting groove 14, and the engagement groove 35 are formed in the housing 27 in order from the front surface to the back surface of the housing 27, and the engagement groove 35 has a larger diameter than the packing mounting groove 14. Three types of V-packings 28 to 31 are mounted in the packing mounting groove 14, and the shaft 11 is inserted in the insertion hole 10, the packing mounting groove 14 and the engagement groove 35.
Is inserted. As in the case of FIG. 2 (b), the upper surface of the housing 27 comes into contact with the atmosphere, the housing 27 forming the packing mounting groove 14 projects in a pipe shape, and has an annular portion connected to the upper end. Since the movable shaft 11 is sealed, the same V as in the case of the fluid sealing device (part 2) in FIG.
The packings 28 to 31 are mounted in the packing mounting grooves 14.
The upper surface of the V-packing 28 made of fluoro rubber (FKM) on the atmosphere side and the upper inner surface of the packing mounting groove 14 are formed with the concavities and convexities opposite to each other, and the upper surface of the V-packing 28 and the packing mounting groove 14 are formed.
The upper inner surface of 14 is tightly joined. Similarly, the two surfaces of the V-packings 28 to 31 that are joined to each other are formed with the concavities and convexities of the facing surfaces reversed, and the V-packings 28 to 31 are joined to each other exactly. Note that the housing 27 may be integral with or separate from the valve body.
【００１０】弾性材料製の押さえ板36のばね部37の先端
が係合溝35に係着され、押さえ板36の上面がＶパッキン
31の裏面に接合され、押さえ板36の弾性によってＶパッ
キン28〜31にシール力が付与され、Ｖパッキン28〜31が
パッキン装着溝14に維持されている。押さえ板36の形状
は図１(b),(c) に示すとおりであり、１枚の金属板をプ
レス成形し、又は合成樹脂を成形して一体に形成されて
いる。押さえ板36は、中央に挿通孔34が形成され、外周
には案内部38の円弧状の外周部と、半径方向外側に一部
突出した複数個のばね部37とがあり、ばね部37に適切な
弾発力を発揮させるために、ばね部37の側部と案内部38
との間に切り欠いた隙間39が形成されている。押さえ板
36のばね部37以外の部分は案内部38であり、ばね部37は
半径方向の内側で案内部38と接続されている。図１(c)
に明示されているように、押さえ板36の断面には２つの
山形部分があり、挿通孔34から頂部40に向かって斜め上
方に延び、頂部40から外周に向かって斜め下方に延びて
いる。押さえ板36に力が作用しない自由状態のとき、案
内部38はばね部37より開いており、断面において案内部
38とばね部37との傾斜角の差はθ度である。An end of a spring portion 37 of a pressing plate 36 made of an elastic material is engaged with the engaging groove 35, and an upper surface of the pressing plate 36 is V-packed.
The sealing is applied to the V packings 28 to 31 by the elasticity of the pressing plate 36, and the V packings 28 to 31 are maintained in the packing mounting grooves 14. The shape of the pressing plate 36 is as shown in FIGS. 1 (b) and 1 (c), and is formed integrally by pressing one metal plate or by molding a synthetic resin. The holding plate 36 has an insertion hole 34 formed in the center, and has an arc-shaped outer peripheral portion of a guide portion 38 on the outer periphery and a plurality of spring portions 37 partially projecting radially outward. In order to exert appropriate elasticity, the side of the spring part 37 and the guide part 38
And a notched gap 39 is formed. Holding plate
The portion other than the spring portion 37 of the guide 36 is a guide portion 38, and the spring portion 37 is connected to the guide portion 38 on the inner side in the radial direction. Fig. 1 (c)
As shown in FIG. 2, the cross section of the holding plate 36 has two chevron portions, which extend obliquely upward from the insertion hole 34 toward the top 40 and obliquely downward from the top 40 toward the outer periphery. In a free state in which no force acts on the holding plate 36, the guide portion 38 is opened from the spring portion 37, and the guide portion 38
The difference between the inclination angles of the spring 38 and the spring portion 37 is θ degrees.
【００１１】ハウジング27の係合溝35の表面には、押さ
え板36のばね部37の先端が係着し易いように、相当数の
凹凸が存在している。Ｖパッキン28〜31がパッキン装着
溝14に装着された後に、押さえ板36をＶパッキン31の下
側に当接させて装着し、押さえ板36でＶパッキン28〜31
を加圧して押さえ板36を離す。押さえ板36の弾性によ
り、ばね部37の円弧状の先端が環状の係合溝35の壁面に
係着し、係着状態が継続される。押さえ板36の案内部38
はＶパッキン28〜31からの力により弾性変形し、案内部
38とばね部37との傾斜角の差θ度は略０度となる。案内
部38が元の位置に戻ろうとする弾性による付勢力がＶパ
ッキン28〜31に伝えられ、この付勢力がＶパッキン28〜
31と軸11及びパッキン装着溝14との間の適切なシール力
となっている。しかも、押さえ板36の付勢力によって、
弗素樹脂製のＶパッキン29、31のクリープによる変形が
最小にされ、Ｖパッキン28〜31の整形効果が得られる。
なお、Ｖパッキン31の下面と押さえ板36の上面とは、対
向面の凹凸が逆に形成されており、Ｖパッキン31の下面
と押さえ板36の上面とがぴったりと接合されている。ま
た、軸11は押さえ板36の挿通孔34をも挿通しており、軸
11と挿通孔34との間には隙間が存在している。The surface of the engagement groove 35 of the housing 27 has a considerable number of irregularities so that the tip of the spring portion 37 of the holding plate 36 can be easily engaged. After the V packings 28 to 31 are mounted in the packing mounting grooves 14, the holding plate 36 is mounted in contact with the lower side of the V packing 31, and the holding plates 36 are used to mount the V packings 28 to 31.
To release the holding plate 36. Due to the elasticity of the pressing plate 36, the arc-shaped tip of the spring portion 37 is engaged with the wall surface of the annular engagement groove 35, and the engaged state is continued. Guide part 38 of holding plate 36
Is elastically deformed by the force from the V-packings 28-31,
The difference θ between the inclination angles of 38 and the spring portion 37 is substantially 0 °. The urging force due to the elasticity of the guide portion 38 trying to return to the original position is transmitted to the V packings 28 to 31, and this urging force is transmitted to the V packings 28 to 31.
An appropriate sealing force is provided between the shaft 31, the shaft 11, and the packing mounting groove 14. Moreover, by the urging force of the holding plate 36,
The deformation of the V-packings 29 and 31 made of fluororesin due to creep is minimized, and the shaping effect of the V-packings 28 to 31 is obtained.
Note that the lower surface of the V-packing 31 and the upper surface of the holding plate 36 are formed with the concavities and convexities opposite to each other, and the lower surface of the V-packing 31 and the upper surface of the holding plate 36 are tightly joined. The shaft 11 also passes through the insertion hole 34 of the holding plate 36,
A gap exists between 11 and the insertion hole 34.
【００１２】図１(a) では、押さえ板36のばね部37が係
合溝35に係着されているが、係合溝35又はパッキン装着
溝14の下端部に環状溝（例えば、図２(b) のストッパー
17を装着した環状溝のようなもの）を形成し、その環状
溝にばね部37の先端部を係合させてもよい。また、ばね
部37の先端をパッキン装着溝14の壁面に係着させてもよ
い。また、本発明の実施の形態では、図１の流体封止装
置をバルブの操作軸の部分に適用することを前提として
説明したが、各種の機器の壁部（機器の内外を遮断する
部分）に回転又は往復動する軸を挿通させる場合に、図
１の流体封止装置を適用することができる。In FIG. 1A, the spring portion 37 of the holding plate 36 is engaged with the engagement groove 35. However, an annular groove (for example, FIG. (b) stopper
17) may be formed, and the distal end of the spring portion 37 may be engaged with the annular groove. Further, the tip of the spring portion 37 may be engaged with the wall surface of the packing mounting groove 14. Further, in the embodiment of the present invention, the description has been made on the assumption that the fluid sealing device of FIG. 1 is applied to a portion of an operation shaft of a valve. However, walls of various devices (portions for blocking the inside and outside of the device). When a rotating or reciprocating shaft is inserted through the fluid sealing device shown in FIG.
【００１３】[0013]
【発明の効果】本発明の流体封止装置において、パッキ
ン装着溝の開口部近傍に弾性材料製の押さえ板が係着さ
れ、Ｖパッキンは押さえ板の弾性によってシール力が付
与されパッキン装着溝に維持されている。このように、
本発明の押さえ板が、従来の流体封止装置の案内板、ス
プリング及びストッパーの３部品の機能を奏することと
なり、流体封止装置の長さが短くなって小型化が図ら
れ、かつ流体封止装置の部品数が減少してコスト低減を
図ることができる。流体封止装置の小型化及びコスト低
減により、流体封止装置を適用した装置の小型化及びコ
スト低減が可能となる。According to the fluid sealing device of the present invention, a pressing plate made of an elastic material is engaged in the vicinity of the opening of the packing mounting groove, and the V packing is provided with a sealing force by the elasticity of the pressing plate, so that the V packing is formed in the packing mounting groove. Has been maintained. in this way,
The holding plate of the present invention has the functions of the three parts of the guide plate, the spring and the stopper of the conventional fluid sealing device, so that the length of the fluid sealing device is shortened, the size is reduced, and the fluid sealing device is reduced. The number of parts of the stop device is reduced, and the cost can be reduced. The miniaturization and cost reduction of the fluid sealing device enable the miniaturization and cost reduction of the device to which the fluid sealing device is applied.
【図１】図１(a) は本発明の流体封止装置の実施の形態
の断面図であり、図１(b) は押さえ板の平面図であり、
図１(c) は図１(b) のＣ−Ｃ線断面図である。FIG. 1 (a) is a cross-sectional view of an embodiment of a fluid sealing device of the present invention, and FIG. 1 (b) is a plan view of a holding plate;
FIG. 1C is a sectional view taken along the line CC of FIG. 1B.
【図２】図２(a) は従来の流体封止装置（その１）を適
用したバルブの断面図であり、図２(b) は従来の流体封
止装置（その２）の断面図である。FIG. 2A is a cross-sectional view of a valve to which a conventional fluid sealing device (part 1) is applied, and FIG. 2B is a cross-sectional view of a conventional fluid sealing device (part 2). is there.
10 挿通孔 11 軸 14 パッキン装着溝 27 ハウジング 28〜31 Ｖパッキン 36 押さえ板 37 ばね部 39 隙間 10 Insertion hole 11 Axis 14 Packing mounting groove 27 Housing 28 to 31 V packing 36 Pressing plate 37 Spring part 39 Clearance
Claims (4)
が形成され、パッキン装着溝にＶパッキンが装着され、
挿通孔及びＶパッキンに軸が挿通され、Ｖパッキンによ
りハウジングのパッキン装着溝の内部と軸の表面との間
が密封される流体封止装置において、パッキン装着溝の
開口部近傍に弾性材料製の押さえ板が係着され、Ｖパッ
キンは押さえ板の弾性によってシール力が付与されパッ
キン装着溝に維持されていることを特徴とする流体封止
装置。An insertion hole and a packing mounting groove are formed in a housing, and a V packing is mounted in the packing mounting groove.
In a fluid sealing device in which a shaft is inserted through an insertion hole and a V-packing, and the space between the inside of the packing mounting groove of the housing and the surface of the shaft is sealed by the V-packing, an elastic material made of an elastic material is provided near the opening of the packing mounting groove. A fluid sealing device, wherein a holding plate is engaged, and a V packing is provided with a sealing force by elasticity of the holding plate and is maintained in a packing mounting groove.
突出され、押さえ板の案内部とばね部の側部との間に隙
間が形成され、押さえ板のＶパッキン側の面がＶパッキ
ンの押さえ板側の面にぴったりと接合された請求項１記
載の流体封止装置。2. A plurality of spring portions project from an outer peripheral portion of the holding plate, a gap is formed between a guide portion of the holding plate and a side portion of the spring portion, and a surface of the holding plate on the V-packing side is formed. The fluid sealing device according to claim 1, wherein the fluid sealing device is tightly joined to a surface of the V packing on the side of the holding plate.
の壁面に係着され、又はばね部の先端部がパッキン装着
溝の開口部に形成された環状溝に係合され、又はばね部
の先端部がパッキン装着溝の開口部に隣接して形成され
たパッキン装着溝より大径の係合溝に係合された請求項
２記載の流体封止装置。3. A tip of the spring portion is engaged with a wall surface of the opening of the packing mounting groove, or a tip of the spring portion is engaged with an annular groove formed in the opening of the packing mounting groove, or 3. The fluid sealing device according to claim 2, wherein the distal end of the fluid sealing device is engaged with an engagement groove having a diameter larger than that of the packing mounting groove formed adjacent to the opening of the packing mounting groove.
キン、弗素樹脂製のＶパッキン及びエチレン・プロピレ
ンゴム製のＶパッキンが装着され、押さえ板の弾性力に
よって、Ｖパッキンとパッキン装着溝の内面及び軸の表
面との間に適切なシール力が付与され、弗素樹脂製のＶ
パッキンのクリープによる変形が最小にされる請求項１
ないし３のいずれか１つに記載の流体封止装置。4. A V-packing made of fluoro rubber, a V-packing made of fluororesin, and a V-packing made of ethylene propylene rubber are mounted in the packing mounting groove, and the V packing and the inner surface of the packing mounting groove are formed by the elastic force of the holding plate. And an appropriate sealing force between the shaft and the surface of the shaft.
2. The packing of claim 1, wherein creep deformation is minimized.
4. The fluid sealing device according to any one of items 3 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9296453A JPH11118042A (en) | 1997-10-15 | 1997-10-15 | Fluid sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9296453A JPH11118042A (en) | 1997-10-15 | 1997-10-15 | Fluid sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11118042A true JPH11118042A (en) | 1999-04-30 |
Family
ID=17833752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9296453A Pending JPH11118042A (en) | 1997-10-15 | 1997-10-15 | Fluid sealing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11118042A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002008644A3 (en) * | 2000-07-24 | 2002-05-30 | Gen Valve Inc | Load-profile compensating stuffing-box packing system for valves |
| JP2010537138A (en) * | 2007-08-23 | 2010-12-02 | フィッシャー コントロールズ インターナショナル リミテッド ライアビリティー カンパニー | Device for connecting a valve shaft to a valve member |
-
1997
- 1997-10-15 JP JP9296453A patent/JPH11118042A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002008644A3 (en) * | 2000-07-24 | 2002-05-30 | Gen Valve Inc | Load-profile compensating stuffing-box packing system for valves |
| JP2010537138A (en) * | 2007-08-23 | 2010-12-02 | フィッシャー コントロールズ インターナショナル リミテッド ライアビリティー カンパニー | Device for connecting a valve shaft to a valve member |
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