JPS60136666A - Shaft seal apparatus - Google Patents

Shaft seal apparatus

Info

Publication number
JPS60136666A
JPS60136666A JP58244276A JP24427683A JPS60136666A JP S60136666 A JPS60136666 A JP S60136666A JP 58244276 A JP58244276 A JP 58244276A JP 24427683 A JP24427683 A JP 24427683A JP S60136666 A JPS60136666 A JP S60136666A
Authority
JP
Japan
Prior art keywords
shaft
flange
seal ring
sleeve
onto
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.)
Granted
Application number
JP58244276A
Other languages
Japanese (ja)
Other versions
JPH0126430B2 (en
Inventor
Haruyuki Mizuno
水野 晴行
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Steel Works Ltd
Original Assignee
Japan Steel Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Japan Steel Works Ltd filed Critical Japan Steel Works Ltd
Priority to JP58244276A priority Critical patent/JPS60136666A/en
Publication of JPS60136666A publication Critical patent/JPS60136666A/en
Publication of JPH0126430B2 publication Critical patent/JPH0126430B2/ja
Granted legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • F16J15/34Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3464Mounting of the seal
    • F16J15/3476Means for minimising vibrations of the slip-ring

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Of Bearings (AREA)
  • Mechanical Sealing (AREA)

Abstract

PURPOSE:To improve sealing effect by forming a sealing surface by a seal ring on the inner-peripheral edge part of a flange and a seal ring on the body-side edge surface of a sleeve and allowing the edge surface of a case body installed onto the sleeve to contact with the flange. CONSTITUTION:A cut part over the whole circumference is formed onto the outside edge surface of a flange 4 which contacts with a shaft 1, and a seal ring 5 is fitted into said cut part. Said seal ring 5 is urged towards the outside by a spring 6, and forms a sealing surface A together with a seal ring 5'. A cylindrical projection part 12 is formed onto the body 2 side of a case 10, and brought into press-contact in slidable ways in the direction perpendicular to the shaft onto the surface B, together with the body flange 4. The seal ring 5' is installed onto the body-side edge surface of a sleeve 7, and revolves with said sleeve 7. Therefore, even if a shaft vibration generates, said vibration can be absorbed by the slidable movement of the B surface.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は軸封装置の改良に関するものである。[Detailed description of the invention] (Industrial application field) The present invention relates to an improvement of a shaft sealing device.

軸封装置は周知のとおり、押出機などにおいて、軸が機
械本体の外部に貫通する箇所で内部の溶融樹脂などが外
部に漏れる、あるいは外気が機械本体内に流入すること
を防止するものである。
As is well known, shaft sealing devices are used to prevent internal molten resin from leaking outside or outside air from flowing into the machine body at the point where the shaft of an extruder passes through the machine body. .

(従来技術) 従来より軸封装置として、第1図に示すように軸1が本
体2を貫通する部分において、本体2に切欠部を設けこ
こにパツキン3を挿入し、これをパンキン押さえである
フランジ4によって保持し軸を封するものが利用されて
いる。しかしながら熱可塑性樹脂の押出機のように軸が
長手方向に往復動じたり、あるいは軸振れを起す装置に
おいては、パツキンの摩耗が厳しく、パ・ンキンと軸と
の間にすき間が早期に生じシールが困難になるという欠
点を有している。
(Prior art) Conventionally, as a shaft sealing device, as shown in FIG. 1, a notch is provided in the main body 2 at the part where the shaft 1 passes through the main body 2, and a gasket 3 is inserted into the notch. The shaft is held by a flange 4 and the shaft is sealed. However, in devices such as thermoplastic resin extruders where the shaft reciprocates in the longitudinal direction or which causes shaft vibration, the seal is subject to severe wear, and a gap quickly forms between the seal and the shaft, resulting in a poor seal. It has the disadvantage of being difficult.

(本発明の目的) 本発明はこの従来の軸封装置の欠点を克服することを目
的としたものであり、特に押出機のように軸(スクリュ
ー軸)が回転し、かつ軸振れあるいは往復動を伴なう機
械において、内部の溶融樹脂などが機械本体外部に漏れ
ることを防止するために発明されたものである。
(Object of the present invention) The purpose of the present invention is to overcome the drawbacks of the conventional shaft sealing device. In particular, when the shaft (screw shaft) rotates, such as in an extruder, there is no shaft vibration or reciprocating motion. This was invented to prevent the molten resin inside the machine from leaking to the outside of the machine body.

(実施例の構成) 第2図は本発明実施例の軸封装置の説明のための断面図
である。シール機構としては、先づ従来装置と同じく、
軸1が機械本体2の外部に貫通する箇所において、ラビ
リンス3′をフランジ4によって保持している。そして
フランジ4の軸1に接する外部端面に全周にわたり切欠
部を設け、ここにシールリング5を装着している。シー
ルリング5は回り止め用ピン(図示していない)によっ
て回転不能となっており、また40度から45度ピッチ
で設けたバネ挿入用穴に装着したバネ6によって、外部
側に付勢され、後述するシールリング5′とシーを面A
を形成している。またフランジ部4には、シール用穴C
を設【す、シール用、冷却用あるいは潤滑用の気流体を
注入する。
(Configuration of Embodiment) FIG. 2 is a sectional view for explaining a shaft sealing device according to an embodiment of the present invention. First of all, the sealing mechanism is the same as the conventional device.
A labyrinth 3' is held by a flange 4 at a location where the shaft 1 penetrates to the outside of the machine body 2. A notch is provided over the entire circumference on the outer end surface of the flange 4 in contact with the shaft 1, and the seal ring 5 is mounted here. The seal ring 5 is prevented from rotating by a rotation prevention pin (not shown), and is urged outward by a spring 6 installed in a spring insertion hole provided at a pitch of 40 degrees to 45 degrees. Seal ring 5' and seam, which will be described later, are placed on surface A.
is formed. In addition, the flange portion 4 has a sealing hole C.
Inject gas fluid for sealing, cooling, or lubrication.

−実軸1の本体2より突出した部分にはキー8によりス
リーブ7が嵌合されており、軸lと共に回転する。キー
溝8′は軸1の往復動に必要な長さを有し、またスリー
ブ7の着脱を容易にするためキー8はバネ61を介して
挿入されている。一方ケース1Oが軸受け9、軸受は押
さえ13により、スリーブ7に装着され、そのフランジ
4′に設けたバネ6″を嵌装した、ポル) l 1’に
よって、本体フランジ4と係合されている。ボルト11
′とフランジ4′に設けたポル) 11’用の貫通穴と
は軸振れによる軸直角方向の移動を可能にする適度のす
き間を設ける。またケース10の本体2側には円筒状の
突起部12が設けられ、本体フランジ4と、B面で軸直
角方向に摺動可能に押接されている。この突起部12の
上下端には切り欠きをそれぞれ設け(但し、図示してい
ない)流体漏れ用としている。また、スリーブ7の本体
側端面にはシールリング5′が設けられスリーブと共に
回転する。尚、本装置はシール14、ダストシール15
、およびOリング16によってシールされている。
- A sleeve 7 is fitted with a key 8 to a portion of the real shaft 1 that protrudes from the main body 2, and rotates together with the shaft l. The keyway 8' has a length necessary for the reciprocating movement of the shaft 1, and the key 8 is inserted through a spring 61 in order to facilitate the attachment and detachment of the sleeve 7. On the other hand, the case 1O has a bearing 9, which is attached to the sleeve 7 by a retainer 13, and is engaged with the main body flange 4 by a spring 6'' fitted to the flange 4'. .Bolt 11
11' provided in the flange 4' and the through hole provided in the flange 4' are provided with an appropriate gap to enable movement in the direction perpendicular to the axis due to shaft runout. Further, a cylindrical protrusion 12 is provided on the main body 2 side of the case 10, and is pressed against the main body flange 4 so as to be slidable in the direction perpendicular to the axis on the B surface. Cutouts are provided at the upper and lower ends of the protrusion 12 (not shown, however) for fluid leakage. Further, a seal ring 5' is provided on the end surface of the sleeve 7 on the main body side and rotates together with the sleeve. In addition, this device has a seal 14 and a dust seal 15.
, and sealed by an O-ring 16.

本装置は、バネ6および6′を介して本体に対して支持
されている。したがって、軸振れが起きた場合にはB面
の摺動によって吸収される。また軸が往復動じても、シ
ール面Aは損傷することがないので、シール効果は極め
て高く長期の使用に酎える。
The device is supported relative to the main body via springs 6 and 6'. Therefore, when shaft vibration occurs, it is absorbed by the sliding movement of the B surface. Further, even if the shaft moves back and forth, the sealing surface A is not damaged, so the sealing effect is extremely high and it can be used for a long time.

(本発明の構成) 本発明は上記の通り、軸封装置に′8I71て、機械本
体を貫通する軸が外部に突出する部分に、フランジを設
け、該フランジの内周端部に/くネを介してシールリン
グを嵌装し、軸の機械本体より外部に突出した部分にキ
ーによりスリーブを連結し、該スリーブの本体側端面に
シールリングを設ζすで上記二つのシールリングにより
シール面を形成しかつ軸受けを介してスリーブに装着さ
れたケースをバネを有する連結手段によりフランジに連
結しケース本体の端面が上記フランジに接触し摺動可能
となっていることを特徴とする軸封装置。
(Structure of the Present Invention) As described above, the present invention provides a shaft sealing device with a flange at a portion where the shaft passing through the machine body protrudes to the outside, and a flange at the inner peripheral end of the flange. A seal ring is fitted through the shaft, a sleeve is connected with a key to the part of the shaft that protrudes from the machine body, and a seal ring is installed on the end surface of the sleeve on the body side. and a case attached to the sleeve via a bearing is connected to the flange by a connecting means having a spring, and the end face of the case body is in contact with the flange and is slidable. .

(本発明の作用効果) 本発明によれば従来の軸封装置のノ々ツキンなどのシー
ル部が軸の回転、往復動あるいは軸振れなどにより損傷
し、シール効果が不十分であったのに対し、上記二つの
シールリングによりシーJし面Aが形成され、かつ、軸
振れによる振動を上記B面の摺動によって吸収するので
、シール効果カー大きく、かつ、長期の運転に酎えるこ
とができる。
(Operations and Effects of the Present Invention) According to the present invention, the sealing portion of the conventional shaft sealing device, such as the seal, was damaged due to shaft rotation, reciprocating motion, shaft vibration, etc., and the sealing effect was insufficient. On the other hand, the two seal rings form the seam surface A, and the vibrations caused by shaft vibration are absorbed by the sliding surface B, so the sealing effect is large and can be used for long-term operation. can.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は従来の軸封装置の説明用一部断面図、第2図は
本発明実施例の同じく一部断面図である。 1・・・軸 2・・・機械本体 3・・・パツキン 3′・・・・ラビリンス4.4′・
・・フランジ 5.5′・φ9シールリング 6.6−16’−−−バネ 7φ・・スリーブ 8争e・キー 8′―・・キー溝 9・・・軸受 10Φ嘩・ケース 11、ii’−−φポルト12・・
・ケース突起部 13・φΦ軸受押え 14−Φ・シール15・・・ダス
トシール 16・@φ0リング 特許出願人 株式会社 日木製鋼所 代理人 安 1)有 三
FIG. 1 is a partially sectional view for explaining a conventional shaft sealing device, and FIG. 2 is a partially sectional view of an embodiment of the present invention. 1...Shaft 2...Machine body 3...Packskin 3'...Labyrinth 4.4'
...Flange 5.5', φ9 seal ring 6.6-16'---Spring 7φ...Sleeve 8, Key 8'---Keyway 9...Bearing 10Φ, Case 11, ii' --φ Porto 12...
・Case protrusion 13・φφ bearing retainer 14-φ・Seal 15...Dust seal 16・@φ0 ring Patent applicant Nichiki Steel Co., Ltd. Agent Yasu 1) Yes 3

Claims (1)

【特許請求の範囲】 軸封装置において、機械本体を貫通する軸が外部に突出
する部分にフランジを設け、該フランジの内周端部にバ
ネを介してシールリングを嵌装し。 軸の機械本体より外部に突出した部分にキーによりスリ
ーブを連結し、該スリーブの本体側端面にシールリング
を設けて上記二つのシールリングによりシール面を形成
し、かつ軸受けを介してスリーブに装着されたケースを
バネを有する連結手段によりフランジに連結し、ケース
本体の端面が上記フランジに接触し摺動可能となってい
ることを特徴とする軸封装置。
[Claims] In a shaft sealing device, a flange is provided at a portion where a shaft passing through a machine body projects to the outside, and a seal ring is fitted to an inner circumferential end of the flange via a spring. A sleeve is connected by a key to the part of the shaft that protrudes from the machine body, a seal ring is provided on the end surface of the sleeve on the body side, the two seal rings form a sealing surface, and the sleeve is attached to the sleeve via a bearing. A shaft sealing device characterized in that the case is connected to a flange by a connecting means having a spring, and the end face of the case body is in contact with the flange and is slidable.
JP58244276A 1983-12-26 1983-12-26 Shaft seal apparatus Granted JPS60136666A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58244276A JPS60136666A (en) 1983-12-26 1983-12-26 Shaft seal apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58244276A JPS60136666A (en) 1983-12-26 1983-12-26 Shaft seal apparatus

Publications (2)

Publication Number Publication Date
JPS60136666A true JPS60136666A (en) 1985-07-20
JPH0126430B2 JPH0126430B2 (en) 1989-05-23

Family

ID=17116338

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58244276A Granted JPS60136666A (en) 1983-12-26 1983-12-26 Shaft seal apparatus

Country Status (1)

Country Link
JP (1) JPS60136666A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102305292A (en) * 2011-06-10 2012-01-04 张家港市兰航机械有限公司 Shaft sealing device
JP2019138334A (en) * 2018-02-07 2019-08-22 日本ピラー工業株式会社 mechanical seal

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51123598U (en) * 1975-04-01 1976-10-06
JPS53133951U (en) * 1977-03-31 1978-10-24

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51123598U (en) * 1975-04-01 1976-10-06
JPS53133951U (en) * 1977-03-31 1978-10-24

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102305292A (en) * 2011-06-10 2012-01-04 张家港市兰航机械有限公司 Shaft sealing device
JP2019138334A (en) * 2018-02-07 2019-08-22 日本ピラー工業株式会社 mechanical seal

Also Published As

Publication number Publication date
JPH0126430B2 (en) 1989-05-23

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