JPH0545339U - Shaft seal device for concentric twin shaft - Google Patents
Shaft seal device for concentric twin shaftInfo
- Publication number
- JPH0545339U JPH0545339U JP9388591U JP9388591U JPH0545339U JP H0545339 U JPH0545339 U JP H0545339U JP 9388591 U JP9388591 U JP 9388591U JP 9388591 U JP9388591 U JP 9388591U JP H0545339 U JPH0545339 U JP H0545339U
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- seal
- hollow shaft
- concentric
- sealing device
- 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
- Mechanical Sealing (AREA)
Abstract
(57)【要約】
【目的】軸封装置のメカニカルシール部のシール液の冷
却能力を向上させる。
【構成】軸封装置の軸封室23,24内にヒートパイプ
25,26を設置することにより、シール液冷却能力を
増加させる。
【効果】シール液の冷却能力の増加によりシールの摺動
部の温度上昇を低くできるので部品の寿命を長くするこ
とができる。
(57) [Summary] [Purpose] To improve the cooling capacity of the seal liquid in the mechanical seal part of the shaft sealing device. [Structure] By installing heat pipes 25 and 26 in shaft-sealing chambers 23 and 24 of a shaft-sealing device, the sealing liquid cooling capacity is increased. [Effect] By increasing the cooling capacity of the seal liquid, the temperature rise of the sliding portion of the seal can be reduced, so that the life of the parts can be extended.
Description
【0001】[0001]
本考案は高温用,高圧用または真空用の容器において、容器内部から外部に対 して貫通し、可動する同芯二軸に好適な軸封装置に関するものである。 The present invention relates to a high-pressure, high-pressure, or vacuum container, which is suitable for a concentric biaxial shaft that penetrates from the inside to the outside and is movable.
【0002】[0002]
従来からの軸封装置は、1軸に対して1軸封装置が一般的に使用されている。 しかもこの場合の軸は中実軸に限られていた。しかしながら、産業の発達に伴い 、複雑な軸封機構も徐々に要求されている。 As a conventional shaft sealing device, one shaft sealing device is generally used for one shaft. Moreover, the axis in this case was limited to the solid axis. However, with the development of industry, complex shaft seal mechanisms are gradually required.
【0003】 例えば、エンジニアリングプラスチックの生産に使用される重合機を例にとっ てみると、低粘度から高粘度までの広範囲の粘度域の撹拌が必要となり、その一 つの対応として、容器内全体をくまなく撹拌させるために、同芯二軸による二種 類の撹拌翼を組み合わせて使用する例もある。これらに使用される軸封装置には 例えば特願平1−207808号が挙げられる。For example, taking a polymerization machine used for the production of engineering plastics as an example, it is necessary to agitate in a wide viscosity range from low viscosity to high viscosity. There is also an example in which two types of stirring blades with concentric twin shafts are used in combination for thorough stirring. Examples of shaft sealing devices used for these are Japanese Patent Application No. 1-207808.
【0004】[0004]
上記従来技術は軸封装置のメカニカルシール部のシール液の冷却に対して、特 に内軸と中空軸との間のシール液の冷却能力が不足し摺動部の温度が上昇してメ カニカルシールの部品の寿命が低下するという問題があった。 In the above-mentioned conventional technique, the mechanical seal of the mechanical seal part of the shaft sealing device is cooled against the cooling of the seal liquid, in particular, the cooling capacity of the seal liquid between the inner shaft and the hollow shaft is insufficient and the temperature of the sliding part rises to cause mechanical seal. There was a problem that the service life of the parts was shortened.
【0005】 本考案の目的は、メカニカルシール部のシール液の冷却能力を向上させること にある。An object of the present invention is to improve the cooling capacity of the seal liquid in the mechanical seal portion.
【0006】[0006]
上記目的は、同芯二軸の内軸と中空軸及び中空軸と中空軸を覆う本体との間に ヒートパイプを設置することにより達成される。 The above object can be achieved by installing a heat pipe between the inner shaft of the concentric biaxial shaft and the hollow shaft, and between the hollow shaft and the main body covering the hollow shaft.
【0007】[0007]
同芯二軸用軸封装置は内軸の外周上に設けた回転環とこれに相対するように中 空軸の内側に設けた固定座とで内軸用の軸封装置を形成し、一方、中空軸の外周 にも回転環を設け、これに相対する固定環を本体の内側に設けて中空軸外側用の 軸封装置を形成し、それぞれの軸封室内にシール液の冷却用のヒートパイプを設 置することにより高性能な軸封作用が行われる。 The concentric two-shaft shaft sealing device forms a shaft sealing device for the inner shaft by a rotary ring provided on the outer periphery of the inner shaft and a fixed seat provided inside the hollow shaft so as to face the ring. A rotary ring is also provided on the outer circumference of the hollow shaft, and a fixed ring that faces the rotary ring is provided inside the main body to form a shaft sealing device for the outside of the hollow shaft. By installing a pipe, a high-performance shaft sealing action is performed.
【0008】[0008]
以下、本考案の一実施例を図1により説明する。 An embodiment of the present invention will be described below with reference to FIG.
【0009】 図において、内軸1の外周には回転環4,5が設けられ、回転環4,5はばね7 a,7bにより、固定座2,3に押し付けられA部で摺動している。ばね7a, 7bは内軸1に固定されたばね受け6に固定されている。一方、固定座2,3は ハウジング8,9に固定され、中空軸10の内部に設けられ、中空軸10と回転 を共にしている。In the figure, rotating rings 4 and 5 are provided on the outer periphery of the inner shaft 1, and the rotating rings 4 and 5 are pressed against the fixed seats 2 and 3 by springs 7a and 7b and slide at the A portion. There is. The springs 7a and 7b are fixed to a spring bearing 6 fixed to the inner shaft 1. On the other hand, the fixed seats 2 and 3 are fixed to the housings 8 and 9, are provided inside the hollow shaft 10, and rotate together with the hollow shaft 10.
【0010】 また、中空軸10の外周面には、回転環13,14があり、固定座11,12に ばね16a,16bで押しつけられ、B部で摺動している。ばね16a,16b は、ばね受け15に固定され、中空軸10と回転を共にしている。固定座11, 12は、本体18の両側に設けられたカバー17,19に固定されている。Further, on the outer peripheral surface of the hollow shaft 10, there are rotary rings 13 and 14, which are pressed against the fixed seats 11 and 12 by springs 16a and 16b, and slide at the portion B. The springs 16a and 16b are fixed to the spring bearing 15 and rotate together with the hollow shaft 10. The fixed seats 11 and 12 are fixed to covers 17 and 19 provided on both sides of the main body 18.
【0011】 今、内軸1と中空軸10との軸封を考えると、回転環4,5と固定座2,3で シールされ、シール液(冷却液)は軸封室23,24に充満され、容器内側と容 器外側を密閉することができる。軸封室23,24の内部にはヒートパイプ25 ,26が設置されている。本ヒートパイプ25,26には、図示していないがヒ ートパイプの熱交換効率を向上させるために放熱フィンなどを取り付けても良い 。ヒートパイプ25,26は軸封室23,24の中に軸の長手方向に設置され円 周方向に等間隔になるように配置され、軸封室23,24内の整流板の役割を持 たせている。Considering the shaft seal between the inner shaft 1 and the hollow shaft 10, the rotary rings 4, 5 and the fixed seats 2, 3 seal the seal liquid (cooling liquid) in the shaft seal chambers 23, 24. The inside of the container and the outside of the container can be sealed. Heat pipes 25 and 26 are installed inside the shaft sealing chambers 23 and 24. Although not shown, radiating fins may be attached to the heat pipes 25 and 26 in order to improve the heat exchange efficiency of the heat pipe. The heat pipes 25 and 26 are installed in the shaft-sealing chambers 23 and 24 in the longitudinal direction of the shaft and arranged at equal intervals in the circumferential direction. ing.
【0012】 次に冷却液の流れを考えると、冷却液はカバー19に設けられた通路27を通 り、固定座11の外周を冷却しながら中空軸10の軸封室24に入る。軸封室2 4の中には仕切板22とヒートパイプ26とが設けてあり、冷却液の一部はヒー トパイプ26で熱交換されてカバー17の通路28を通って排出される。また、 残りの冷却液は中空軸10の連通孔20を通って中空軸10の軸封室23に入り 、軸封室23内に設置されたヒートパイプ25により熱交換され、連通孔21を 通りカバー17の通路28を通って排出される。この時、軸封室23,24内を 通過する冷却液の流れは軸方向に配置されたヒートパイプ25,26により流路 が形成され、しかも、円周方向に等間隔に配置されているので軸封室23,24 内を均等に冷却することができる。装置の外に出た冷却液は通常別置きにされた 冷却液タンクに戻され冷却される。そして、冷却された冷却液は循環ポンプによ り再び軸封室24へと送られる。この時、軸封室の熱負荷が小さければ冷却用の ポンプは本構成から外される。本軸封装置では、軸封室内にヒートパイプを設置 しているので自然対流の循環作用のみで軸封室の熱負荷を大きく取れるために、 循環ポンプを外せる範囲が広がり軸封装置全体の構成価格を低減できる効果があ る。また、ヒートパイプの熱交換作用によりシールの摺動部の温度上昇を低くで きるので、部品の寿命を長くすることができる。Next, considering the flow of the cooling liquid, the cooling liquid passes through the passage 27 provided in the cover 19 and enters the shaft sealing chamber 24 of the hollow shaft 10 while cooling the outer periphery of the fixed seat 11. A partition plate 22 and a heat pipe 26 are provided in the shaft sealing chamber 24, and a part of the cooling liquid is heat-exchanged by the heat pipe 26 and discharged through a passage 28 of the cover 17. The remaining cooling liquid enters the shaft sealing chamber 23 of the hollow shaft 10 through the communication hole 20 of the hollow shaft 10, is heat-exchanged by the heat pipe 25 installed in the shaft sealing chamber 23, and passes through the communication hole 21. It is discharged through the passage 28 of the cover 17. At this time, the flow of the cooling liquid passing through the shaft-sealing chambers 23 and 24 forms a flow path by the heat pipes 25 and 26 arranged in the axial direction, and moreover, is arranged at equal intervals in the circumferential direction. The inside of the shaft sealing chambers 23 and 24 can be cooled evenly. The cooling liquid that has flowed out of the equipment is normally returned to a separate cooling liquid tank and cooled. Then, the cooled cooling liquid is sent to the shaft sealing chamber 24 again by the circulation pump. At this time, if the heat load of the shaft-sealing chamber is small, the cooling pump is removed from this structure. In this shaft seal device, a heat pipe is installed in the shaft seal chamber, so a large heat load can be taken in the shaft seal chamber only by the circulation effect of natural convection. It has the effect of reducing the price. Moreover, since the temperature rise of the sliding portion of the seal can be suppressed by the heat exchange action of the heat pipe, the life of the component can be extended.
【0013】 このように本軸封装置は、内軸と中空軸が個別に自由に回転しても、各々の軸 隙間をシールすることが可能である。また、このような軸封装置は中空軸が多層 存在しても、同様な構造を適用することによって実現可能である。さらに、軸封 室の冷却方法においても上記に述べた方法により、効果的に冷却することが可能 である。As described above, in the present shaft sealing device, even if the inner shaft and the hollow shaft rotate independently, it is possible to seal the gap between the shafts. Further, such a shaft sealing device can be realized by applying a similar structure even if there are multiple hollow shafts. Further, also in the cooling method of the shaft sealing chamber, it is possible to effectively cool it by the method described above.
【0014】[0014]
本考案によれば、同芯二軸及び同芯多軸において、メカニカルシール部のシー ル液の冷却能力が向上し、耐圧,耐真空に対応する軸封装置を提供することがで き、軸封装置の構成価格も安くできる利点がある。 ADVANTAGE OF THE INVENTION According to this invention, in a concentric biaxial and a concentric multiaxial, the cooling capacity of the seal liquid of a mechanical seal part improves, and the shaft sealing device corresponding to pressure resistance and vacuum resistance can be provided. There is an advantage that the configuration price of the sealing device can be reduced.
【図1】本考案の一実施例の同芯二軸用軸封装置の断面
図である。FIG. 1 is a cross-sectional view of a concentric biaxial shaft sealing device according to an embodiment of the present invention.
1…内軸、2,3,11,12…固定座、4,5,1
3,14…回転環、10…中空軸、20,21…連通
孔、22…仕切版、23,24…軸封室、25,26…
ヒートパイプ。1 ... Inner shaft, 2, 3, 11, 12 ... Fixed seat, 4, 5, 1
3, 14 ... Rotating ring, 10 ... Hollow shaft, 20, 21 ... Communication hole, 22 ... Partition plate, 23, 24 ... Shaft sealing chamber, 25, 26 ...
heat pipe.
Claims (1)
設け、それぞれの軸を何ら制約を与えず自由に回転でき
るように支持した同芯二軸装置において、内軸と中空
軸、さらに中空軸と中空軸を覆う本体との間に、それぞ
れ個別なメカニカルシールを設け、軸封室内に密閉型の
冷却装置を設けたことを特徴とする同芯二軸用軸封装
置。1. A concentric biaxial device in which a rotatable inner shaft and a hollow shaft are provided on the outer periphery of the inner shaft, and the respective shafts are supported so as to be freely rotatable without any restriction. A shaft seal device for concentric twin shafts, characterized in that an individual mechanical seal is provided between the shaft and a hollow shaft and a main body that covers the hollow shaft, and a sealed cooling device is provided in the shaft seal chamber.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9388591U JPH0545339U (en) | 1991-11-15 | 1991-11-15 | Shaft seal device for concentric twin shaft |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9388591U JPH0545339U (en) | 1991-11-15 | 1991-11-15 | Shaft seal device for concentric twin shaft |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0545339U true JPH0545339U (en) | 1993-06-18 |
Family
ID=14094938
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9388591U Pending JPH0545339U (en) | 1991-11-15 | 1991-11-15 | Shaft seal device for concentric twin shaft |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0545339U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2010123025A1 (en) * | 2009-04-23 | 2012-10-25 | イーグル工業株式会社 | Mechanical seal device |
JP2013007477A (en) * | 2011-06-27 | 2013-01-10 | Hitachi Plant Technologies Ltd | Shaft-seal device for high-temperature fluid |
-
1991
- 1991-11-15 JP JP9388591U patent/JPH0545339U/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2010123025A1 (en) * | 2009-04-23 | 2012-10-25 | イーグル工業株式会社 | Mechanical seal device |
JP5615267B2 (en) * | 2009-04-23 | 2014-10-29 | イーグル工業株式会社 | Mechanical seal device |
JP2013007477A (en) * | 2011-06-27 | 2013-01-10 | Hitachi Plant Technologies Ltd | Shaft-seal device for high-temperature fluid |
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