JPS6323649Y2 - - Google Patents
Info
- Publication number
- JPS6323649Y2 JPS6323649Y2 JP1982018170U JP1817082U JPS6323649Y2 JP S6323649 Y2 JPS6323649 Y2 JP S6323649Y2 JP 1982018170 U JP1982018170 U JP 1982018170U JP 1817082 U JP1817082 U JP 1817082U JP S6323649 Y2 JPS6323649 Y2 JP S6323649Y2
- Authority
- JP
- Japan
- Prior art keywords
- ring
- seal
- packing
- sealing
- fixed
- 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
- 238000012856 packing Methods 0.000 claims description 22
- 238000007789 sealing Methods 0.000 claims description 22
- 239000012530 fluid Substances 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000008602 contraction Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Description
【考案の詳細な説明】
この考案は、ケーシングの端部にシヤフトの周
囲を囲む筒状の止環を固定し、この止環の外周に
環状のパツキンをその内周の接面が止環の外周に
圧接するように嵌着し、このパツキンの先端に固
着した密封環を、シヤフトに固定したローターの
端面に固着した密封環に圧接してこれらの密封端
面の外周側の密封流体をシールするようにしたメ
カニカルシールに関するものである。[Detailed description of the invention] This invention fixes a cylindrical stop ring surrounding the shaft to the end of the casing, and attaches an annular packing around the outer periphery of the stop ring so that the contact surface of the inner circumference of the stop ring is attached to the outer circumference of the stop ring. The sealing ring that is fitted to the outer periphery and fixed to the tip of the seal is pressed against the sealing ring that is fixed to the end face of the rotor fixed to the shaft to seal the sealing fluid on the outer periphery of these sealed end faces. The present invention relates to a mechanical seal having such a structure.
従来のこの種のメカニカルシールにおいては、
パツキンをその軸方向の可撓性を増すために内外
周に凹凸を有するベローズ状に形成しているが、
止環の外周に圧接する内周接面に形成された環状
の空所が密閉状態となるために、空所内部の空気
がパツキンの軸方向への伸縮を妨げ、その先端の
密封押環に回転スリツプを生じさせ、その摩耗を
早めるなどの欠点があつた。 In conventional mechanical seals of this type,
The packing is formed into a bellows shape with unevenness on the inner and outer circumferences to increase its flexibility in the axial direction.
Since the annular cavity formed on the inner circumferential surface that presses against the outer circumference of the retaining ring is in a sealed state, the air inside the cavity prevents the seal from expanding and contracting in the axial direction, causing the sealing ring at the tip to close. It had the disadvantage of causing rotational slip and accelerating its wear.
この考案は前記従来の課題を解決するために、
パツキンの内周の接面中間に設けた環状の空所よ
りパツキンの先端側の接面周囲に軸方向の溝を多
数形成することにより、空所をパツキン内側の空
気などの非密封流体に連通させてパツキンの軸方
向への伸縮作動を円滑化し、密封押環の回転スリ
ツプを確実に防止してその摩耗を軽減すると共
に、パツキンの軸方向への充分な伸縮量を確保す
ることにより、その軸方向の取付け許容誤差を大
きくとれるようにしたメカニカルシールを提案す
るものである。 In order to solve the above-mentioned conventional problems, this invention
By forming a large number of axial grooves around the contact surface on the tip side of the seal from an annular cavity provided in the middle of the contact surface on the inner circumference of the seal, the cavity is communicated with unsealed fluid such as air inside the seal. This ensures smooth expansion and contraction of the packing in the axial direction, reliably prevents rotational slip of the sealing push ring and reduces its wear, and ensures sufficient expansion and contraction of the packing in the axial direction. This paper proposes a mechanical seal that allows for a large axial installation tolerance.
「実施例」
以下この考案を図面に示す実施例について説明
すると、ケーシング１内に貫通したシヤフト２に
はローター３が固定され、このローター３のシー
ル側の端面には、パツキン４を介して密封環５が
固着されている。``Example'' Below, an example of this invention shown in the drawings will be described. A rotor 3 is fixed to a shaft 2 penetrating into a casing 1, and a sealing seal is attached to an end surface of the rotor 3 on the sealing side via a packing 4. Ring 5 is fixed.
ローター３に相対するケーシング１の端部に設
けた凹部には、シヤフト２の周囲を囲んで外周に
鉤形のフランジを有する筒状の止環６が嵌合固着
され、この止環６の内筒７の外周には内外周が凹
凸状をなすベローズ状に形成されたパツキン８
が、その内周を内筒７に密接すると共に後端を止
環６のフランジに密接して回転しないように嵌着
されている。 A cylindrical stop ring 6 that surrounds the shaft 2 and has a hook-shaped flange on the outer periphery is fitted and fixed into a recess provided at the end of the casing 1 facing the rotor 3. On the outer periphery of the cylinder 7 is a bellows-shaped packing 8 whose inner and outer peripheries are uneven.
However, its inner periphery is in close contact with the inner cylinder 7, and its rear end is in close contact with the flange of the stop ring 6, so that it is not rotated.
パツキン８は、その外周の凹溝内にスプリング
環９，１０が装着され、また内周面には止環６の
内筒７に少なくとも前後二個所において圧接する
接面１１，１２が形成されている。 The gasket 8 has spring rings 9, 10 installed in grooves on its outer periphery, and contact surfaces 11, 12 formed on the inner peripheral surface to press against the inner cylinder 7 of the stop ring 6 at least at two locations, front and rear. There is.
パツキン８の先端には密封押環１３が固着さ
れ、これをローター３側の密封環５に圧接してパ
ツキン８の外周側の密封流体Ｌをシールする密封
端面Ｓを構成しており、スプリング環９，１０は
パツキン８の周囲を圧縮して密封押環１３の密封
環５への密接圧力を強化している。 A sealing press ring 13 is fixed to the tip of the packing 8, and this is pressed against the sealing ring 5 on the rotor 3 side to form a sealing end surface S that seals the sealing fluid L on the outer circumferential side of the packing 8. 9 and 10 compress the periphery of the packing 8 to strengthen the close pressure of the seal press ring 13 to the seal ring 5.
パツキン８の内周の接面１１と１２の間には環
状の空所１４が設けられ、この空所１４よりもパ
ツキン８の先端側に位置する接面１１には軸方向
の連通溝１５がローレツト掛け状に多数設けら
れ、これによつて空所１４をパツキン８の内周側
の非密封流体Ａに連通している。 An annular space 14 is provided between the contact surfaces 11 and 12 on the inner circumference of the packing 8, and an axial communication groove 15 is provided in the contact surface 11 located closer to the tip of the packing 8 than the space 14. A large number of them are provided in a knurled manner, thereby communicating the cavity 14 with the unsealed fluid A on the inner peripheral side of the packing 8.
以上の構成において、パツキン８の空所１４が
連通溝１５によつてパツキン８の外部（流体Ａ
側）に連通しているため、パツキン８が軸方向の
伸縮する際に従来のように空所１４が密閉状態と
なることはなく、内部の流体が自由に流通して軸
方向への伸縮が円滑に行われ、伸縮量も充分に確
保することができる。 In the above configuration, the cavity 14 of the packing 8 is connected to the outside of the packing 8 (fluid A) by the communication groove 15.
side), when the packing 8 expands and contracts in the axial direction, the space 14 does not become sealed as in the conventional case, and the fluid inside freely circulates, preventing the expansion and contraction in the axial direction. This is done smoothly, and a sufficient amount of expansion and contraction can be ensured.
従つて、パツキン８の先端の密封押環１３の密
封環５に対する軸方向の追従性、圧接性が極めて
向上し、密封押環５の回転スリツプを確実に防止
することができる。 Therefore, the axial followability and pressure contact of the seal ring 13 at the tip of the packing 8 with the seal ring 5 are greatly improved, and rotational slip of the seal ring 5 can be reliably prevented.
以上の通りこの考案によれば、ケーシングの端
部にシヤフトの周囲を囲む筒状の止環を固定し、
この止環の外周に環状のパツキンをその内周の接
面が止環の外周に圧接するように嵌着し、このパ
ツキンの先端に固着した密封押環を前記シヤフト
に固定したローターの端面に固着した密封環に圧
接してこれらの密封端面の外周側の密封流体をシ
ールするようにしたメカニカルシールにおいて、
パツキンの内周の接面中間に環状の空所を設け、
この空所よりパツキンの先端側の接面周囲に軸方
向の溝を多数形成してなるので、パツキンが軸方
向の伸縮する際に従来のように空所が密閉状態と
なることはなく、内部の流体が自由に流通して軸
方向への伸縮が円滑に行われ、伸縮量も充分に確
保することができ、これによつてパツキンの先端
の密封押環の密封環に対する軸方向の追従性、圧
接性を向上し、密封押環の回転スリツプを確実に
防止してその摩耗を軽減することができると共
に、パツキンの軸方向取付許容誤差を大きくとる
ことができ、また密封端面の許容摩擦量も大きく
することができる。 As described above, according to this invention, a cylindrical stop ring surrounding the shaft is fixed to the end of the casing,
An annular packing is fitted onto the outer periphery of this stop ring so that the contact surface of its inner circumference is pressed against the outer periphery of the stop ring, and the sealing press ring fixed to the tip of this packing is attached to the end face of the rotor fixed to the shaft. In a mechanical seal that presses against a fixed sealing ring to seal the sealing fluid on the outer periphery of these sealing end faces,
An annular space is provided in the middle of the contact surface on the inner circumference of the packing,
Since a large number of axial grooves are formed around the contact surface on the tip side of the gasket from this cavity, when the gasket expands and contracts in the axial direction, the cavity does not become sealed like in the past, and the inside The fluid flows freely, allowing smooth expansion and contraction in the axial direction, and a sufficient amount of expansion and contraction can be ensured. , it is possible to improve pressure contact, reliably prevent rotational slip of the sealing push ring and reduce its wear, and it is also possible to increase the axial mounting tolerance of the seal, and to reduce the allowable amount of friction on the sealing end face. can also be made larger.
第１図はこの考案のメカニカルシールの取付け
状態を示す部分縦断側面図、第２図は第１図にお
けるY2−Y2断面図である。
１……ケーシング、２……シヤフト、３……ロ
ーター、４……パツキン、５……密封環、６……
止環、７……内筒、８……パツキン、９，１０…
…スプリング環、１１，１２……接面、１３……
密封押環、１４……空所、１５……連通溝、Ｓ…
…密封端面。
FIG. 1 is a partial longitudinal sectional side view showing the installed state of the mechanical seal of this invention, and FIG. 2 is a Y 2 -Y 2 sectional view in FIG. 1. 1...Casing, 2...Shaft, 3...Rotor, 4...Putskin, 5...Sealing ring, 6...
Stop ring, 7... Inner cylinder, 8... Packing, 9, 10...
... Spring ring, 11, 12 ... Contact surface, 13 ...
Sealing press ring, 14... Blank space, 15... Communication groove, S...
...Sealed end face.
Claims (1)
の止環を固定し、この止環の外周に環状のパツキ
ンをその内周の接面が止環の外周に圧接するよう
に嵌着し、このパツキンの先端に固着した密封押
環を、前記シヤフトに固定したローターの端面に
固着した密封環に圧接してこれらの密封端面の外
周側の密封流体をシールするようにしたメカニカ
ルシールにおいて、前記パツキンの内周の接面中
間に環状の空所を設け、この空所よりパツキンの
先端側の接面周囲に軸方向の溝を多数形成してな
ることを特徴とするメカニカルシール。 A cylindrical stop ring that surrounds the shaft is fixed to the end of the casing, and a ring-shaped packing is fitted onto the outer periphery of the stop ring so that the contact surface on the inner periphery is pressed against the outer periphery of the stop ring. A mechanical seal in which a sealing push ring fixed to the tip of the packing is pressed against a sealing ring fixed to the end face of a rotor fixed to the shaft to seal the sealing fluid on the outer peripheral side of these sealed end faces, A mechanical seal characterized in that an annular cavity is provided in the middle of the contact surface on the inner periphery of the seal, and a number of axial grooves are formed around the contact surface on the tip side of the seal from the cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1817082U JPS58122068U (en) | 1982-02-12 | 1982-02-12 | mechanical seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1817082U JPS58122068U (en) | 1982-02-12 | 1982-02-12 | mechanical seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58122068U JPS58122068U (en) | 1983-08-19 |
| JPS6323649Y2 true JPS6323649Y2 (en) | 1988-06-29 |
Family
ID=30030432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1817082U Granted JPS58122068U (en) | 1982-02-12 | 1982-02-12 | mechanical seal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58122068U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4825946U (en) * | 1971-08-02 | 1973-03-28 |
-
1982
- 1982-02-12 JP JP1817082U patent/JPS58122068U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4825946U (en) * | 1971-08-02 | 1973-03-28 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58122068U (en) | 1983-08-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6323649Y2 (en) | ||
| JPH073114Y2 (en) | Via-type fluid supply device in rotary shaft | |
| JPS6215564Y2 (en) | ||
| JPS631084Y2 (en) | ||
| JPS6224133Y2 (en) | ||
| JPH0649973Y2 (en) | Oil seal | |
| JPH0515652Y2 (en) | ||
| JPH0543279Y2 (en) | ||
| JPS6141921Y2 (en) | ||
| JPS6224865Y2 (en) | ||
| JPS6014055Y2 (en) | Shaft sealing device | |
| JPS6345260U (en) | ||
| JPH0446138Y2 (en) | ||
| JPS6135786Y2 (en) | ||
| JPH03108972U (en) | ||
| JPH0410164U (en) | ||
| JPH034404Y2 (en) | ||
| JPH0614155Y2 (en) | mechanical seal | |
| JPS6327181Y2 (en) | ||
| JPH03127869U (en) | ||
| JPH0227065U (en) | ||
| JPH01115066U (en) | ||
| JPS6157269U (en) | ||
| JPH0367767U (en) | ||
| JPH01136772U (en) |