JPH1038U - Mechanical seals for submersible pumps, etc. - Google Patents

Mechanical seals for submersible pumps, etc.

Info

Publication number
JPH1038U
JPH1038U JP361192U JP361192U JPH1038U JP H1038 U JPH1038 U JP H1038U JP 361192 U JP361192 U JP 361192U JP 361192 U JP361192 U JP 361192U JP H1038 U JPH1038 U JP H1038U
Authority
JP
Japan
Prior art keywords
sealing ring
sliding
ring
shaft
exposed end
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
Application number
JP361192U
Other languages
Japanese (ja)
Inventor
治男 辻本
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.)
Tsurumi Manufacturing Co Ltd
Original Assignee
Tsurumi Manufacturing Co 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 Tsurumi Manufacturing Co Ltd filed Critical Tsurumi Manufacturing Co Ltd
Priority to JP361192U priority Critical patent/JPH1038U/en
Publication of JPH1038U publication Critical patent/JPH1038U/en
Pending legal-status Critical Current

Links

Abstract

(57)【要約】 【目的】高速回転により使用される水中ポンプにおいて
も摺動密封面の周速が遅く、磨耗が少なくて長期の使用
に耐え得るメカニカルシールを提供すること。 【構成】シャフト1と遊合する固定側密封環2の表出端
面と、シャフト1に嵌着される回転側密封環4の表出端
面との対向面間に中間摺動環7を介在させ、該中間摺動
環7の両側において固定側密封環2および回転側密封環
4の各表出端面と摺接する摺動密封面8、9を夫々構成
せしめる。そしてモーターの駆動によりシャフト1と共
に回転側密封環4が回転すると、中間摺動環7は回転側
密封環4よりも低速度で回転して固定側密封環2の表出
端面と摺接する。
(57) [Summary] [Object] To provide a mechanical seal that has a low peripheral speed of a sliding sealing surface even in a submersible pump used by high-speed rotation, has little wear, and can withstand long-term use. An intermediate sliding ring is interposed between an exposed end face of a stationary sealing ring that fits with a shaft and an exposed surface of a rotating sealing ring that is fitted to the shaft. On both sides of the intermediate sliding ring 7, sliding sealing surfaces 8 and 9 which are in sliding contact with the respective exposed end faces of the fixed sealing ring 2 and the rotating sealing ring 4 are formed. When the rotation side sealing ring 4 rotates together with the shaft 1 by driving of the motor, the intermediate sliding ring 7 rotates at a lower speed than the rotation side sealing ring 4 and comes into sliding contact with the exposed end face of the fixed side sealing ring 2.

Description

【考案の詳細な説明】 【0001】 シャフト(1)と遊合して固定体に装着される固定側密封環(2)の表出端面 と、シャフト(1)に装着される回転側密封環(4)の表出端面との対向面間に 中間摺動環(7)を介在させ、該中間摺動環(7)の両側において固定側密封環 (2)および回転側密封環(4)の各表出端面と摺接する摺動密封面(8)(9 )を夫々構成せしめたことを特徴とする、水中ポンプ等のメカニカルシール。 【考案の技術分野】 【0002】 本考案は、水中ポンプ等のメカニカルシール、特に高速回転により使用される 水中ポンプのメカニカルシールに関するものである。 【従来技術とその問題点】 従来のメカニカルシールは図2に示すよう、固定側密封環2’の表出端面と回 転側密封環4’の表出端面とが直接接触して摺動密封面8’を構成しており、摺 動密封面8’がシャフト1’と同一の回転数で摺接する。 【0003】 【考案が解決しようとする課題】 周知のようにメカニカルシールの寿命は、摺動密封面の周速に関係し、周速が 速ければ磨耗も速く、周速が遅ければ磨耗も遅くて長期の使用に耐えることがで きる。しかるに従来のメカニカルシールは前述のように、摺動密封面8’がシャ フト1’と同一の回転数で摺接するため、高速回転により使用される水中ポンプ においてはメカニカルシールの寿命が著しく短くなる。 【0004】 本考案の目的は、高速回転により使用される水中ポンプにおいても摺動密封面 の周速が遅く、磨耗が少なくて長期の使用に耐え得るメカニカルシールを提供す ることにある。 【0005】 【考案の構成】 本考案に係る水中ポンプのメカニカルシールにおいては、シャフトと遊合して 固定体に装着される固定側密封環の表出端面と、シャフトに装着される回転側密 封環の表出端面との対向面間に中間摺動環を介在させ、該中間摺動環の両側にお いて固定側密封環および回転側密封環の各表出端面と摺接する摺動密封面を夫々 構成せしめたのである。 【0006】 【実施例】 以下、実施例の図面について説明する。 【0007】 1はモーターの中心から導出されたシャフト、2はシャフト1に遊合して境壁 3等の固定体に装着される固定側密封環、4は上記固定側密封環2と対向して押 圧バネ5により押圧されるようベローズ6を介してシャフト1に装着された回転 側密封環、7は固定側密封環2の表出端面と回転側密封環4の表出端面との対向 面間に介在させた中間摺動体であり、該中間摺動環7の両側において固定側密封 環2および回転側密封環4の表出端面と摺接する摺動密封面8、9を夫々構成せ しめるが、これら両摺動密封面8、9の接触抵抗は同一となるよう設定しておく ことが望ましい。 【0008】 【作 用】 上述の実施例において、モーターの駆動によりシャフト1と共に回転側密封環 4が回転すると、中間摺動環7は回転側密封環4よりも低速度で回転して固定側 密封環2の表出端面と摺接する。つまり、第2摺動接触面8の接触抵抗により、 回転速度の減衰した状態では第1摺動接触面9での軸封作用が行われると共に、 第2摺動接触面8での軸封作用も減衰した回転速度で行われるのである、このよ うに中間摺動環7の附設によって摺動接触面が2ヶ所となって周速が減速される のであり、両摺動接触面8、9はいずれもシャフト1の回転数の1/2の回転を 行うことになる。 【0009】 【考案の効果】 本考案によれば、固定側密封間と回転側密封間とが直接接触するのではなく、 中間摺動環の存在により摺動接触面の回転速度が減衰されて、シャフトの回転数 よりも少ない回転で軸封作用が行われるのであるから、摩損が少なくて長期の使 用に耐え得るメカニカルシールとなり、高速回転により使用される水中ポンプの メカニカルシールとして好適である。 【提出日】平成9年1月20日 【手続補正2】 【補正対象書類名】明細書 【補正対象項目名】考案の詳細な説明 【補正方法】変更 【補正内容】 【考案の詳細な説明】 【0001】 【考案の技術分野】 本考案は、水中ポンプ等のメカニカルシール、特に高速回転により使用される 水中ポンプのメカニカルシールに関するものである。 【0002】 【従来技術とその問題点】 従来のメカニカルシールは図2に示すよう、固定側密封環2’の表出端面と回 転側密封環4’の表出端面とが直接接触して摺動密封面8’を構成しており、摺 動密封面8’がシャフト1’と同一の回転数で摺接する。 【0003】 【考案が解決しようとする課題】 周知のようにメカニカルシールの寿命は、摺動密封面の周速に関係し、周速が 速ければ磨耗も速く、周速が遅ければ磨耗も遅くて長期の使用に耐えることがで きる。しかるに従来のメカニカルシールは前述のように、摺動密封面8’がシャ フト1’と同一の回転数で摺接するため、高速回転により使用される水中ポンプ においてはメカニカルシールの寿命が著しく短くなる。 【0004】 本考案の目的は、高速回転により使用される水中ポンプにおいても摺動密封面 の周速が遅く、磨耗が少なくて長期の使用に耐え得るメカニカルシールを提供す ることにある。 【0005】 【考案の構成】 本考案に係る水中ポンプのメカニカルシールにおいては、シャフトと遊合して 固定体に装着される固定側密封環の表出端面と、シャフトに装着される回転側密 封環の表出端面との対向面間に中間摺動環を介在させ、該中間摺動環の両側にお いて固定側密封環および回転側密封環の各表出端面と摺接する摺動密封面を夫々 構成せしめたのである。 【0006】 【実施例】 以下、実施例の図面について説明する。 【0007】 1はモーターの中心から導出されたシャフト、2はシャフト1に遊合して境壁 3等の固定体に装着される固定側密封環、4は上記固定側密封環2と対向して押 圧バネ5により押圧されるようベローズ6を介してシャフト1に装着された回転 側密封環、7は固定側密封環2の表出端面と回転側密封環4の表出端面との対向 面間に介在させた中間摺動体であり、該中間摺動環7の両側において固定側密封 環2および回転側密封環4の表出端面と摺接する摺動密封面8、9を夫々構成せ しめるが、これら両摺動密封面8、9の接触抵抗は同一となるよう設定しておく ことが望ましい。 【0008】 【作 用】 上述の実施例において、モーターの駆動によりシャフト1と共に回転側密封環 4が回転すると、中間摺動環7は回転側密封環4よりも低速度で回転して固定側 密封環2の表出端面と摺接する。つまり、第2摺動接触面8の接触抵抗により、 回転速度の減衰した状態では第1摺動接触面9での軸封作用が行われると共に、 第2摺動接触面8での軸封作用も減衰した回転速度で行われるのである、このよ うに中間摺動環7の附設によって摺動接触面が2ヶ所となって周速が減速される のであり、両摺動接触面8、9はいずれもシャフト1の回転数の1/2の回転を 行うことになる。 【0009】 【考案の効果】 本考案によれば、固定側密封間と回転側密封間とが直接接触するのではなく、 中間摺動環の存在により摺動接触面の回転速度が減衰されて、シャフトの回転数 よりも少ない回転で軸封作用が行われるのであるから、摩損が少なくて長期の使 用に耐え得るメカニカルシールとなり、高速回転により使用される水中ポンプの メカニカルシールとして好適である。[Detailed description of the invention]       [0001]   The exposed end surface of the fixed-side sealing ring (2) which is attached to the fixed body in play with the shaft (1) And between the surface facing the exposed end surface of the rotating side sealing ring (4) mounted on the shaft (1). An intermediate sliding ring (7) is interposed, and a stationary sealing ring is provided on both sides of the intermediate sliding ring (7). (2) and a sliding sealing surface (8) (9) which is in sliding contact with each exposed end surface of the rotating side sealing ring (4). ), Mechanical seals such as submersible pumps.     [Technical field of invention]       [0002]   The present invention is used for mechanical seals such as submersible pumps, especially for high-speed rotation. The present invention relates to a mechanical seal for a submersible pump.     [Prior art and its problems]   As shown in FIG. 2, the conventional mechanical seal rotates with the exposed end face of the fixed-side sealing ring 2 '. The sliding end face of the transfer side sealing ring 4 'is in direct contact with the exposed end face to form a sliding sealing face 8'. The dynamic sealing surface 8 'slides on the shaft 1' at the same rotational speed.       [0003]     [Problems to be solved by the invention]   As is well known, the life of a mechanical seal is related to the peripheral speed of the sliding sealing surface. Faster wear is faster, slower peripheral speed is slower and can withstand long-term use. Wear. However, in the conventional mechanical seal, as described above, the sliding sealing surface 8 'is Submersible pump used at high speed because it slides at the same speed as the shaft 1 ' In, the life of the mechanical seal is significantly shortened.       [0004]   The purpose of the present invention is to provide a sliding sealing surface even for submersible pumps used by high-speed rotation. Provides a mechanical seal that has a low peripheral speed, has low wear and can withstand long-term use. It is to be.       [0005]     [Structure of device]   In the mechanical seal of the submersible pump according to the present invention, The exposed end face of the stationary sealing ring attached to the fixed body and the rotating side seal attached to the shaft. An intermediate sliding ring is interposed between the facing surface of the seal ring and the exposed end surface, and both sides of the intermediate sliding ring are provided. And the sliding sealing surfaces that are in sliding contact with the exposed end faces of the fixed side sealing ring and the rotating side sealing ring, respectively. It was composed.       [0006]     【Example】   Hereinafter, drawings of the embodiments will be described.       [0007]   1 is the shaft derived from the center of the motor, 2 is the shaft A fixed side sealing ring 4 attached to a fixed body such as 3 is pressed against the fixed side sealing ring 2. Rotation mounted on shaft 1 via bellows 6 so as to be pressed by pressure spring 5 The side sealing ring 7 is opposed to the exposed end face of the stationary sealing ring 2 and the exposed end face of the rotating sealing ring 4. This is an intermediate sliding body interposed between the surfaces, and fixedly sealed on both sides of the intermediate sliding ring 7. The sliding sealing surfaces 8 and 9 which are in sliding contact with the exposed end surfaces of the ring 2 and the rotating side sealing ring 4 are respectively constituted. However, the contact resistance between the sliding sealing surfaces 8 and 9 is set to be the same. It is desirable.       [0008]     [Operation]   In the above-described embodiment, the rotating side sealing ring together with the shaft 1 is driven by the motor. 4 rotates, the intermediate sliding ring 7 rotates at a lower speed than the rotating side sealing ring 4 to rotate on the fixed side. It comes into sliding contact with the exposed end face of the sealing ring 2. That is, by the contact resistance of the second sliding contact surface 8, In the state where the rotation speed is attenuated, the shaft sealing action is performed on the first sliding contact surface 9 and The shaft sealing action at the second sliding contact surface 8 is also performed at the attenuated rotation speed. As described above, the provision of the intermediate sliding ring 7 provides two sliding contact surfaces to reduce the peripheral speed. Both of the sliding contact surfaces 8 and 9 rotate at half the rotation speed of the shaft 1. Will do.       [0009]     [Effect of the invention]   According to the present invention, instead of direct contact between the stationary side seal and the rotating side seal, The rotational speed of the sliding contact surface is attenuated by the presence of the intermediate sliding ring, and the rotational speed of the shaft is reduced. Because the shaft sealing action is performed with less rotation, there is little wear and long-term use. Is a mechanical seal that can withstand It is suitable as a mechanical seal.    [Submission date] January 20, 1997 [Procedure amendment 2] [Document name to be amended] Statement [Correction target item name] Detailed explanation of the device [Correction method] Change [Correction contents] [Detailed description of the invention]       [0001]     [Technical field of invention]   The present invention is used for mechanical seals such as submersible pumps, especially for high-speed rotation. The present invention relates to a mechanical seal for a submersible pump.       [0002]     [Prior art and its problems]   As shown in FIG. 2, the conventional mechanical seal rotates with the exposed end face of the fixed-side sealing ring 2 '. The sliding end face of the transfer side sealing ring 4 'is in direct contact with the exposed end face to form a sliding sealing face 8'. The dynamic sealing surface 8 'slides on the shaft 1' at the same rotational speed.       [0003]     [Problems to be solved by the invention]   As is well known, the life of a mechanical seal is related to the peripheral speed of the sliding sealing surface. Faster wear is faster, slower peripheral speed is slower and can withstand long-term use. Wear. However, in the conventional mechanical seal, as described above, the sliding sealing surface 8 'is Submersible pump used at high speed because it slides at the same speed as the shaft 1 ' In, the life of the mechanical seal is significantly shortened.       [0004]   The purpose of the present invention is to provide a sliding sealing surface even for submersible pumps used by high-speed rotation. Provides a mechanical seal that has a low peripheral speed, has low wear and can withstand long-term use. It is to be.       [0005]     [Structure of device]   In the mechanical seal of the submersible pump according to the present invention, The exposed end face of the stationary sealing ring attached to the fixed body and the rotating side seal attached to the shaft. An intermediate sliding ring is interposed between the facing surface of the sealing ring and the exposed end surface, and is provided on both sides of the intermediate sliding ring. And the sliding sealing surfaces that are in sliding contact with the exposed end faces of the fixed side sealing ring and the rotating side sealing ring, respectively. It was composed.       [0006]     【Example】   Hereinafter, drawings of the embodiments will be described.       [0007]   1 is the shaft derived from the center of the motor, 2 is the shaft A fixed side sealing ring 4 attached to a fixed body such as 3 is pressed against the fixed side sealing ring 2. Rotation mounted on shaft 1 via bellows 6 so as to be pressed by pressure spring 5 The side sealing ring 7 is opposed to the exposed end face of the stationary sealing ring 2 and the exposed end face of the rotating sealing ring 4. This is an intermediate sliding body interposed between the surfaces, and fixedly sealed on both sides of the intermediate sliding ring 7. The sliding sealing surfaces 8 and 9 which are in sliding contact with the exposed end surfaces of the ring 2 and the rotating side sealing ring 4 are respectively constituted. However, the contact resistance between the sliding sealing surfaces 8 and 9 is set to be the same. It is desirable.       [0008]     [Operation]   In the above-described embodiment, the rotating side sealing ring together with the shaft 1 is driven by the motor. 4 rotates, the intermediate sliding ring 7 rotates at a lower speed than the rotating side sealing ring 4 to rotate on the fixed side. It comes into sliding contact with the exposed end face of the sealing ring 2. That is, by the contact resistance of the second sliding contact surface 8, In the state where the rotation speed is attenuated, the shaft sealing action is performed on the first sliding contact surface 9 and The shaft sealing action at the second sliding contact surface 8 is also performed at the attenuated rotation speed. As described above, the provision of the intermediate sliding ring 7 provides two sliding contact surfaces to reduce the peripheral speed. Both of the sliding contact surfaces 8 and 9 rotate at half the rotation speed of the shaft 1. Will do.       [0009]     [Effect of the invention]   According to the present invention, instead of direct contact between the stationary side seal and the rotating side seal, The rotational speed of the sliding contact surface is attenuated by the presence of the intermediate sliding ring, and the rotational speed of the shaft is reduced. Because the shaft sealing action is performed with less rotation, there is little wear and long-term use. Is a mechanical seal that can withstand It is suitable as a mechanical seal.

【図面の簡単な説明】 【図1】本考案メカニカルシールの要部縦断側面図であ
る 【図2】従来のメカニカルシールの要部縦断側面図であ
る 【符号の説明】 1 シャフト 2 固定側密封環 4 回転側密封環 7 中間摺動環 8 摺動接触面 9 摺動接触面
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a vertical sectional side view of a main part of a mechanical seal of the present invention. FIG. 2 is a vertical sectional side view of a main part of a conventional mechanical seal. Ring 4 Rotating side sealing ring 7 Intermediate sliding ring 8 Sliding contact surface 9 Sliding contact surface

─────────────────────────────────────────────────────
【手続補正書】 【提出日】平成9年1月20日 【手続補正1】 【補正対象書類名】明細書 【補正対象項目名】実用新案登録請求の範囲 【補正方法】変更 【補正内容】 【実用新案登録請求の範囲】 シャフト(1)と遊合して固定体に装着される固定側密
封環(2)の表出端面と、シャフト(1)に装着される
回転側密封環(4)の表出端面との対向面間に中間摺動
環(7)を介在させ、該中間摺動環(7)の両側におい
て固定側密封環(2)および回転側密封環(4)の各表
出端面と摺接する摺動密封面(8)(9)を夫々構成せ
しめたことを特徴とする、水中ポンプ等のメカニカルシ
ール。
────────────────────────────────────────────────── ───
[Procedure amendment] [Submission date] January 20, 1997 [Procedure amendment 1] [Document name to be amended] Description [Item name to be amended] Claim of utility model registration [Amendment method] Change [Amendment content] [Claims for Utility Model Registration] The exposed end surface of the fixed-side sealing ring (2) fitted to the fixed body while loosely engaging with the shaft (1), and the rotating-side sealing ring (4) mounted to the shaft (1). ), An intermediate sliding ring (7) is interposed between the surfaces facing the exposed end surface, and a fixed sealing ring (2) and a rotating sealing ring (4) are provided on both sides of the intermediate sliding ring (7). A mechanical seal for a submersible pump or the like, wherein sliding seal surfaces (8) and (9) which are in sliding contact with an exposed end surface are respectively constituted.

Claims (1)

【実用新案登録請求の範囲】[Utility model registration claims]
JP361192U 1992-01-06 1992-01-06 Mechanical seals for submersible pumps, etc. Pending JPH1038U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP361192U JPH1038U (en) 1992-01-06 1992-01-06 Mechanical seals for submersible pumps, etc.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP361192U JPH1038U (en) 1992-01-06 1992-01-06 Mechanical seals for submersible pumps, etc.

Publications (1)

Publication Number Publication Date
JPH1038U true JPH1038U (en) 1998-02-13

Family

ID=11562291

Family Applications (1)

Application Number Title Priority Date Filing Date
JP361192U Pending JPH1038U (en) 1992-01-06 1992-01-06 Mechanical seals for submersible pumps, etc.

Country Status (1)

Country Link
JP (1) JPH1038U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030005662A (en) * 2001-07-10 2003-01-23 현대자동차주식회사 Sealing apparatus of water pump
JP2010270865A (en) * 2009-05-22 2010-12-02 Eagle Ind Co Ltd Mechanical seal device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS556042A (en) * 1978-06-27 1980-01-17 Arai Pump Mfg Co Ltd Mechanical seal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS556042A (en) * 1978-06-27 1980-01-17 Arai Pump Mfg Co Ltd Mechanical seal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030005662A (en) * 2001-07-10 2003-01-23 현대자동차주식회사 Sealing apparatus of water pump
JP2010270865A (en) * 2009-05-22 2010-12-02 Eagle Ind Co Ltd Mechanical seal device

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