JPS6229725Y2 - - Google Patents
Info
- Publication number
- JPS6229725Y2 JPS6229725Y2 JP7712582U JP7712582U JPS6229725Y2 JP S6229725 Y2 JPS6229725 Y2 JP S6229725Y2 JP 7712582 U JP7712582 U JP 7712582U JP 7712582 U JP7712582 U JP 7712582U JP S6229725 Y2 JPS6229725 Y2 JP S6229725Y2
- Authority
- JP
- Japan
- Prior art keywords
- ring
- shaft
- fixed
- rotating
- movable
- 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 14
- 239000000314 lubricant Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Mechanical Sealing (AREA)
Description
【考案の詳細な説明】
本考案はメカニカルシールに関するもので、そ
の目的とするところは熱サイクルや圧力サイクル
を繰返し受けると、移動環の軸パツキンが高温時
に軸に密着し、低温時に軸方向へ円滑に移動しな
くなり、移動環と固定環との接触面が開きシール
効果の低下をきたし液洩れの危険性が発生する等
の欠点がでてくるが、このような欠点を除去する
と共にスラリーが軸パツキンと軸との間に詰つて
スラリーによる液洩れ等の発生するのを防止し
て、シール効果の良いメカニカルシールを提供し
ようとするものである。[Detailed description of the invention] This invention relates to a mechanical seal, and its purpose is that when subjected to repeated heat cycles and pressure cycles, the shaft packing of the moving ring will stick tightly to the shaft at high temperatures, and move in the axial direction at low temperatures. There are drawbacks such as the smooth movement of the ring and the contact surface between the moving ring and the fixed ring opening, which reduces the sealing effect and creates a risk of liquid leakage. The purpose is to provide a mechanical seal with good sealing effect by preventing slurry from clogging between the shaft packing and the shaft and causing liquid leakage.
以下、実施例としてポンプに応用した場合につ
き、その構成を説明する。1はポンプのケーシン
グ、2は軸、3は軸端に取付けた羽根車、4はケ
ーシング内周に固定された固定環で、緩衝環5を
介してケーシング1の蓋部に取付けられている。
6は軸2とともにまわる回転環で、キー7により
軸2上に固定されている。8は移動環で、前記固
定環4と回転環6との中間で軸パツキン9を介し
て軸2に回転可能に嵌挿され、回転環6と係合す
る係合片10を有し且つ回転環との間に設けたス
プリング11により常時前記固定環と接触するよ
う附勢されている。尚、軸パツキン9としては、
通常Oリング、Uリング、Vリング等が用いられ
る。12は移動環8と軸2との摺動接触面、13
は移動環8と固定環4との接触面を示し、前記移
動環8が軸パツキン9を介して軸に嵌挿され、係
合片10を介して回転環6と共に回転し、スプリ
ング11により固定環4の方向へ常時押圧されて
密接触し、接触面13に摺動しながら密接して完
全にシールされるようになつている。本考案の特
徴とするところは、前記移動環8において、移動
環8と軸2との摺動接触面12に軸パツキン9,
9を収納する溝14,15を2カ所設け、これら
の溝のうち液側位置の溝15の巾を他方より大き
くして、潤滑剤16を多く封入可能にした点にあ
る。尚17は移動環の係合片10に設けた貫通孔
を示す。 Hereinafter, as an example, the configuration will be described in the case where the present invention is applied to a pump. 1 is a pump casing, 2 is a shaft, 3 is an impeller attached to the shaft end, and 4 is a fixed ring fixed to the inner circumference of the casing, which is attached to the lid of the casing 1 via a buffer ring 5.
Reference numeral 6 denotes a rotating ring that rotates together with the shaft 2, and is fixed on the shaft 2 by a key 7. A movable ring 8 is rotatably fitted onto the shaft 2 via a shaft packing 9 between the fixed ring 4 and the rotating ring 6, and has an engaging piece 10 that engages with the rotating ring 6. A spring 11 provided between the fixed ring and the fixed ring is applied to keep the fixed ring in constant contact with the fixed ring. In addition, as the shaft packing 9,
Usually, O-rings, U-rings, V-rings, etc. are used. 12 is a sliding contact surface between the moving ring 8 and the shaft 2; 13
indicates the contact surface between the movable ring 8 and the fixed ring 4, the movable ring 8 is fitted onto the shaft via the shaft packing 9, rotates together with the rotating ring 6 via the engagement piece 10, and is fixed by the spring 11. It is constantly pressed in the direction of the ring 4 to make close contact, and while sliding on the contact surface 13, it comes in close contact and is completely sealed. The feature of the present invention is that in the movable ring 8, a shaft packing 9 is provided on the sliding contact surface 12 between the movable ring 8 and the shaft 2.
Two grooves 14 and 15 are provided to accommodate the lubricant 9, and the width of the groove 15 on the liquid side is made larger than the other groove, so that a large amount of the lubricant 16 can be enclosed. Note that 17 indicates a through hole provided in the engaging piece 10 of the movable ring.
本考案は上記のような構成をとつたので、次の
ような作用効果がある。軸パツキン9,9を収納
する溝14,15の内、液側位置の溝15には多
くの潤滑剤、例えばグリースやオイル等が封入さ
れておりケーシング内にかかる静圧力及びポンプ
運転中、スタツフイングボツクスにかかるポンプ
吐出圧力によつて移動環と固定環に押圧する力が
働く。同様に移動環に収納されている2個のパツ
キンのうち、液側パツキンを潤滑剤側に押圧する
力が働き、2個のパツキンの中間に封入された潤
滑剤が圧縮され、潤滑剤に圧力が生じる。 Since the present invention has the above configuration, it has the following effects. Of the grooves 14 and 15 that accommodate the shaft packings 9 and 9, the groove 15 on the liquid side is filled with a large amount of lubricant, such as grease and oil, which reduces static pressure within the casing and the staff during pump operation. The pump discharge pressure applied to the inking box exerts a pressing force on the movable ring and the fixed ring. Similarly, of the two gaskets housed in the moving ring, a force acts to press the liquid side gasket toward the lubricant side, compressing the lubricant sealed between the two gaskets, and creating pressure on the lubricant. occurs.
これによつて液側パツキンおよび大気側パツキ
ンの摺動部に強制的に潤滑剤が作用し、熱サイク
ル、圧力サイクルによつて上記パツキンが軸に密
着することがなくなり軸上の摺動が容易になつ
た。 This forces the lubricant to act on the sliding parts of the liquid-side gasket and the atmosphere-side gasket, preventing the gasket from coming into close contact with the shaft due to heat and pressure cycles, making it easier to slide on the shaft. It became.
これによつて軸パツキンに起因するメカニカル
シールの漏れを皆無にすることができた。 This made it possible to completely eliminate mechanical seal leakage caused by the shaft packing.
また潤滑剤の作用で移動環が軸上を摺動するの
が容易になることによつてスプリングによる押圧
力を小さくすることが可能になり移動環と固定環
の接面圧力を低減し、メカニカルシールの寿命を
長くすることが可能になつた。 In addition, the lubricant makes it easier for the movable ring to slide on the shaft, making it possible to reduce the pressing force exerted by the spring, reducing the contact pressure between the movable ring and the fixed ring, and reducing mechanical It has become possible to extend the life of the seal.
2カ所設ける軸パツキン収納用の溝14,15
の内、溝巾の大きい方は潤滑剤の収納容量が多い
ほど補充するまでの期間が長くなるので、構造上
許容できるかぎり広巾にすることが望ましい。 Grooves 14 and 15 for housing the shaft packing provided in two locations
Of these, the larger the groove width, the larger the lubricant storage capacity, the longer it will take to replenish the lubricant, so it is desirable to make the groove as wide as possible structurally.
尚、第2図に示すように回転環と係合する移動
環の係合片部に比較的大きな貫通孔17を形成し
た場合、スプリング11部に発生するスラリーを
遠心力で外部へ排出する作用効果があつて、軸パ
ツキンのスラリーによる詰まりが防止されると共
に係合片部の重量が軽くなり、移動環8の重心位
置が固定環4側に寄ることとなつて、回転の安定
性とシール効果の向上が得られる。 In addition, when a relatively large through hole 17 is formed in the engagement piece of the movable ring that engages with the rotating ring as shown in FIG. This effect prevents the shaft packing from clogging with slurry, reduces the weight of the engagement piece, and moves the center of gravity of the movable ring 8 closer to the fixed ring 4, improving rotational stability and sealing. Improved effectiveness can be obtained.
第1図は本考案をポンプに応用した例を示す要
部断面図、第2図は回転環と移動環との係合部を
示す要部平面図、第3図は軸近辺の分解斜視図。
1……ケーシング、2……軸、4……固定環、
6……回転環、8……移動環、9……軸パツキ
ン、10……係合片、11……スプリング、12
……摺動接触面、14,15……軸パツキンを収
納する溝、16……潤滑剤、17……貫通孔。
Fig. 1 is a sectional view of the main parts showing an example of applying the present invention to a pump, Fig. 2 is a plan view of the main parts showing the engagement part between the rotating ring and the movable ring, and Fig. 3 is an exploded perspective view of the vicinity of the shaft. . 1... Casing, 2... Shaft, 4... Fixed ring,
6... Rotating ring, 8... Moving ring, 9... Shaft packing, 10... Engaging piece, 11... Spring, 12
...Sliding contact surface, 14, 15...Groove for housing the shaft packing, 16...Lubricant, 17...Through hole.
Claims (1)
にまわる回転環と、その中間で軸パツキンを介
して軸に回転可能に嵌挿され、前記回転環と係
合する係合片を有し且つ回転環との間に設けた
スプリングにより常時前記固定環と接触するよ
う附勢された移動環とから成るメカニカルシー
ルにおいて、移動環として、軸との摺動接触面
に、軸パツキンを収納する溝を2カ所設け、こ
れらの溝のうち液側位置の溝巾を他方より大き
くして潤滑剤を多く封入可能にしたことを特徴
とするメカニカルシール。 (2) 回転環と係合する移動環の係合片部に貫通孔
を形成した実用新案登録請求の範囲第1項記載
のメカニカルシール。[Claims for Utility Model Registration] (1) A fixed ring fixed to the casing, a rotating ring rotating together with the shaft, and a shaft packing inserted between the fixed ring and the rotating ring, which is rotatably fitted onto the shaft and engaged with the rotating ring. A mechanical seal consisting of a movable ring which has an engaging piece and a movable ring which is always urged by a spring provided between the rotary ring and the fixed ring so as to be in contact with the fixed ring, the movable ring having a sliding contact surface with the shaft. A mechanical seal characterized in that two grooves are provided for housing the shaft packing, and the width of the liquid side of these grooves is larger than that of the other groove so that more lubricant can be sealed. (2) The mechanical seal according to claim 1 of the utility model registration, wherein a through hole is formed in the engaging piece of the movable ring that engages with the rotating ring.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7712582U JPS58178560U (en) | 1982-05-25 | 1982-05-25 | mechanical seal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7712582U JPS58178560U (en) | 1982-05-25 | 1982-05-25 | mechanical seal |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58178560U JPS58178560U (en) | 1983-11-29 |
JPS6229725Y2 true JPS6229725Y2 (en) | 1987-07-30 |
Family
ID=30086400
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7712582U Granted JPS58178560U (en) | 1982-05-25 | 1982-05-25 | mechanical seal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58178560U (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7056914B2 (en) * | 2018-04-09 | 2022-04-19 | 株式会社タンケンシールセーコウ | mechanical seal |
-
1982
- 1982-05-25 JP JP7712582U patent/JPS58178560U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS58178560U (en) | 1983-11-29 |
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