JPS6217470A - Sealing device - Google Patents
Sealing deviceInfo
- Publication number
- JPS6217470A JPS6217470A JP60154289A JP15428985A JPS6217470A JP S6217470 A JPS6217470 A JP S6217470A JP 60154289 A JP60154289 A JP 60154289A JP 15428985 A JP15428985 A JP 15428985A JP S6217470 A JPS6217470 A JP S6217470A
- Authority
- JP
- Japan
- Prior art keywords
- sealing
- pressure
- seal
- fluid
- air
- 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
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Sealing Of Bearings (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、軸封技術に係る密封装置に関し、さらに詳し
くは空気等のシール用流体を利用したドライシール型の
密封装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sealing device related to shaft sealing technology, and more particularly to a dry seal type sealing device that uses a sealing fluid such as air.
従来から密封装置の代表例としてメカニカルシール、パ
ツキン類、リップシール等が広く知られ、かつ汎用され
ているが、これらの密封装置はいずれも摺動面に適宜面
圧を与え、その圧接力を利用して密封する接触型になり
、たとえば水中ポンプのシャフト軸封部に装着されて揚
液やスラリーのモータ側への浸入を阻止する役目を果た
している。Mechanical seals, gaskets, lip seals, etc. are widely known and commonly used as typical examples of sealing devices, but all of these sealing devices apply appropriate surface pressure to the sliding surface and increase the pressure contact force. For example, it is a contact type that is used for sealing, and is attached to the shaft seal of a submersible pump to prevent pumped liquid or slurry from entering the motor side.
しかしながら、これら従来の密封装置には、一般に、シ
ール構造が複雑で大きく、接触型のため、摺動面に潤滑
剤が必要で、かつ摺動面の摩耗損失や発熱が大きく、こ
れに伴ないシール力が不十分となりがちでモータ内に揚
水やスラリーが浸入したり、あるいは潤滑剤が機外へ漏
出する等のおそれがあり、とくに長期的な耐久シール性
能に今−歩、改良の余地が残されている。However, these conventional sealing devices generally have complicated and large seal structures, and because they are contact-type, lubricant is required on the sliding surfaces, and the abrasion loss and heat generation of the sliding surfaces are large. The sealing force tends to be insufficient, leading to the risk of pumped water or slurry entering the motor, or lubricant leaking out of the machine.There is currently room for improvement, especially in terms of long-term durable sealing performance. left behind.
本発明は以上の点に鑑み、シール性能に優れ信頼性の高
い密封装置を提供せんとするもので、この目的を達成す
るため、水中ポンプ等各種回転機器のシャフトを回転さ
せるモータ等の駆動系内に被シール流体より高圧のシー
ル用流体を充満し、該シール用流体をシール部を通過さ
せた上で被シール流体側へ向けて流出させる構成とした
。In view of the above points, it is an object of the present invention to provide a sealing device with excellent sealing performance and high reliability. The sealing fluid is filled with a sealing fluid having a higher pressure than the fluid to be sealed, and the sealing fluid is made to pass through the seal portion and then flow out toward the fluid to be sealed.
すなわち本発明の密封装置は、駆動系側からシール部を
介して被シール流体側へ空気等のシール用波体を強制的
に圧送し、該圧力により被シール流体の機内への浸入を
阻止するものである。That is, the sealing device of the present invention forcibly sends a sealing wave body such as air from the drive system side to the sealed fluid side through the seal portion, and uses the pressure to prevent the sealed fluid from entering the machine. It is something.
以下1図面にしたがって本発明密封装置を水中ポンプに
組み込んだ例を説明する。An example in which the sealing device of the present invention is incorporated into a submersible pump will be described below with reference to one drawing.
符号(1)は、吸水口(2)と吐出口(3)を備え、内
部に軸設したシャフト(4)の先端に固設したインペラ
(5)の回転に伴なって揚水をボンピングする水中ポン
プのケースを示し、複数のケース部材(IA)(IB)
(IC)(10)と端蓋(6)を気密的に直列接合して
なる。軸受(7) (El)に支持されたシャフト(4
)は、図上8部に内装されたモータの駆動により回転す
るもので、図上左側の軸受(7)とインペラ(5)の間
にシール機構が介設されている。Symbol (1) is an underwater system that is equipped with a water intake port (2) and a discharge port (3), and pumps pumped water with the rotation of an impeller (5) fixed at the tip of a shaft (4) installed inside. Showing the case of the pump, multiple case members (IA) (IB)
(IC) (10) and end cap (6) are connected in series in an airtight manner. Shaft (4) supported by bearing (7) (El)
) is rotated by the drive of a motor installed in part 8 in the figure, and a seal mechanism is interposed between the bearing (7) on the left side in the figure and the impeller (5).
揚水およびこれに含まれるスラリーのモータ側への浸入
を阻止するこのシール機構は、ケース(1)内壁に直接
または間接的に固定支持された各各項状を呈すルハウジ
ング部材(9A) (9B) (9c) (9D)と、
シャフト(4)の一部外層に筒状のパツキン(10)を
介して外挿嵌着されたスリーブ(11)と、該スリーブ
(11)の外周に嵌着したカバ一部材(12)の間に、
リップシール(13)と1対のセグメントシール(14
)(15)ヲ内装シテナル、符号(9A) (9B)
(9G) テ示したハウジング部材と、該ハウジング部
材(9A)(8C)に対して離間対向するスリーブ(1
1)に囲まれ、 る環状空間(16)内に装着されるセ
グメントシール(14)(15)は、図示しないノック
ビン等の回り止め手段を付設されてハウジング部材(O
A) (9G)に対して回り止めされるとともに、両シ
ール(14)(15)間に介装したスプリング(17)
によす、該ハウシンク部材(9A)(9C:)に密接し
、かつ各シール(14)(15)外周に嵌着した緊締ス
プリング(18)(19)によりスリーブ(11)周面
に密接摺動して限定漏洩型のシール部を構成する。ハウ
ジング部材(8A)と、該部材(9A)に離間対向する
スリーブ(11)とカバ一部材(12)に囲まれる環状
空間(20)内に装着されるリップシール(13)は、
受圧面を揚水側へ向けてハウジング部材(9A)内周に
嵌着され、スリーブ(11)周面に密接摺動する。This sealing mechanism, which prevents water pumping and slurry contained therein from infiltrating into the motor side, consists of housing members (9A) (9B) each having a shape that is directly or indirectly fixedly supported on the inner wall of the case (1). ) (9c) (9D) and
Between a sleeve (11) fitted onto a part of the outer layer of the shaft (4) through a cylindrical packing (10) and a cover member (12) fitted around the outer periphery of the sleeve (11). To,
A lip seal (13) and a pair of segment seals (14)
) (15) Interior signal, code (9A) (9B)
(9G) The illustrated housing member and the sleeve (1) facing away from the housing members (9A) and (8C).
The segment seals (14) and (15) installed in the annular space (16) surrounded by the housing member (O
A) A spring (17) that is prevented from rotating relative to (9G) and is interposed between both seals (14) and (15).
The tightening springs (18) and (19) that are in close contact with the house sink members (9A) and (9C) and fitted on the outer periphery of each seal (14) and (15) slide closely against the circumferential surface of the sleeve (11). This creates a limited leakage seal. A lip seal (13) is installed in an annular space (20) surrounded by a housing member (8A), a sleeve (11) facing away from the member (9A), and a cover member (12).
It is fitted onto the inner periphery of the housing member (9A) with the pressure receiving surface facing the water pumping side, and closely slides on the periphery of the sleeve (11).
前記ハウジング部材(9A) (9B) (9G) (
9D)において、(9B)と(9C)、(9C)と(9
D)、(9B)と(9D)の間には後記空気を通す流路
(21)が設けられ、さらに部材(9D)にはモータ例
の空間(22)から流路(21)へ向けて空気を通す所
要数の通気孔(23)が設けられている0部材(9B)
と(9D)の間には、該方向へ空気が流れないようにガ
スケット(24)が介装されている。前記端蓋(6)に
開設したボート(25)には、図示しない空気圧縮機か
らフィルタ(27)、流量計(2日)およびレギュレー
タ(28)を介して送気ライン(26)が接続される。The housing members (9A) (9B) (9G) (
9D), (9B) and (9C), (9C) and (9
D), a flow path (21) for passing air (described later) is provided between (9B) and (9D), and a member (9D) is provided with a flow path (21) extending from the space (22) of the motor example to the flow path (21). 0 member (9B) provided with the required number of ventilation holes (23) to allow air to pass through
A gasket (24) is interposed between and (9D) to prevent air from flowing in that direction. An air supply line (26) is connected to the boat (25) installed in the end cap (6) from an air compressor (not shown) via a filter (27), a flow meter (2 days), and a regulator (28). Ru.
上記密封装置を備えた水中ポンプは、その使用に際し、
空気圧縮機を駆動して機内へ高圧の空気を送り込む。す
なわちフィルタ(27)により浄化された空気は、レギ
ュレータ(29)によりシール水圧(揚水圧)より0.
3〜0.8 kg/c+*2Gはど高圧力に調節されて
ボート(25)から機内へ流入し、モータのロータ部の
間隙や外周を通って室(22)内に充満し、通気孔(2
3)と流路(21)を経、セグメントシール(14)(
15)とりツブシール(13)の各シール部を通過して
揚水側へ溢れ出、一方的な溢流により揚液およびスラリ
ーの浸入を阻止するようになり、当該密封装置は従来品
に対しつぎの利点を有する。When using a submersible pump equipped with the above sealing device,
Drives an air compressor to send high-pressure air into the cabin. In other words, the air purified by the filter (27) is lowered by the regulator (29) to 0.0.
3 to 0.8 kg/c+*2G is adjusted to a high pressure and flows into the machine from the boat (25), passes through the gap and outer circumference of the motor rotor, fills the chamber (22), and enters the ventilation hole. (2
3) and the flow path (21), the segment seal (14) (
15) It passes through each seal part of the ladle seal (13) and overflows to the pumping side, and the unilateral overflow prevents pumped liquid and slurry from entering.This sealing device has the following advantages over conventional products. has advantages.
第1に、リップシール(+3)から常にシール水圧より
高圧の空気を流出させるため、揚水やスラリーの浸入を
完全に阻止することができる。First, since air with a pressure higher than the seal water pressure is always discharged from the lip seal (+3), pumping of water and infiltration of slurry can be completely prevented.
第2に、セグメントシール(14)(15)およびリッ
プシール(13)のシール部に空気を通すため、両シー
ル部が非接触シールに近い状態となり、シール(+3)
(14)(15)の摩耗損失を抑えることができる。Second, since air is allowed to pass through the seals of the segment seals (14) and (15) and the lip seal (13), both seals become close to non-contact seals, resulting in a seal (+3).
(14) The wear loss of (15) can be suppressed.
第3に、空気が、かなりの流速をもってモータ内とシー
ル部を通過するため、冷却効果を奏し。Third, air passes through the motor and the seals at a considerable flow rate, providing a cooling effect.
発熱を抑えることができる。It can suppress fever.
第4に、両シール(13)(14)(15)に摺動潤滑
用の油が不要になるため、該潤滑油の漏れるおそれがな
く1代わって流出するのが空気であるため公害の心配が
ない。Fourth, since there is no need for oil for sliding lubrication in both seals (13), (14), and (15), there is no risk of the lubricating oil leaking, and air instead flows out, so there is no concern about pollution. There is no.
第5に、シール機構に限定漏洩型のセグメントシール(
14)(15)を配したため、空気流量を抑えることが
でき、また該セグメントシール(14)(15)を1対
配したため、モータ側のセグメントシール(15)を他
方(目)の補助シール(安全装置)とすることができる
。Fifth, the seal mechanism has a limited leakage segment seal (
14) and (15), the air flow rate can be suppressed, and since a pair of segment seals (14) and (15) are provided, the segment seal (15) on the motor side is connected to the auxiliary seal (15) on the other side (eye). (safety device).
第6に、シール機能を空気の溢流に依存するため、リッ
プシール(13)やセグメントシール(14)(15)
等のシール部品数を減らすことができ、構造が簡単で、
かつ取り付は長を短かく設定することができる。上記水
中ポンプにおいて、リップシール(13)と1対のセグ
メントシール(14)(15)を並設したのは単なる例
示にすぎず、場合によってはりツブシール(13)だけ
でも充分にその役割を果たすことができる。Sixth, because the sealing function depends on air overflow, lip seals (13) and segment seals (14) (15)
The number of seal parts such as can be reduced, the structure is simple,
Moreover, the installation length can be set short. In the above submersible pump, the arrangement of the lip seal (13) and the pair of segment seals (14) and (15) in parallel is merely an example; in some cases, the beam seal (13) alone may be sufficient to fulfill its role. I can do it.
本発明の密封装置は以−ヒ説明したように、回転機器の
モータ側からシール側へかけて一方的に高圧のシール用
流体を圧送し、該流体の圧力により被シール流体をシー
ルするものである。したがって接触型シールにみられる
経時的なシール力の減退を全て克服して耐久性に優れ、
信頼性の高い装置となり、水中ポンプに限らず広汎な用
途に使用できるものである。As explained below, the sealing device of the present invention unilaterally pumps high-pressure sealing fluid from the motor side of a rotating device to the sealing side, and seals the fluid to be sealed using the pressure of the fluid. be. Therefore, it overcomes the decline in sealing force over time seen in contact type seals and has excellent durability.
It is a highly reliable device that can be used for a wide range of purposes, not just submersible pumps.
図面は本発明の一実施例に係る密封装置を備えた氷中ポ
ンプの半裁断面図である。
(1)ケース (IA)・・・(ID)ケース部材
(4)シャフト (5)インペラ (6)端蓋(9
^)・・φ(9D)ハウジング部材 (11)スリー
ブ(12)カバ一部材 (13)リップシール(+4
)(15)セグメントシール (21)流路(23)
通気孔 (24)ガスケット (25)ボート(2
6)送気ライン (27)フィルタ (28)流量
計(28)レギュレータThe drawing is a half-cut sectional view of a submersible ice pump equipped with a sealing device according to an embodiment of the present invention. (1) Case (IA)...(ID) Case member (4) Shaft (5) Impeller (6) End cover (9
^)...φ(9D) Housing member (11) Sleeve (12) Cover member (13) Lip seal (+4
) (15) Segment seal (21) Channel (23)
Vent hole (24) Gasket (25) Boat (2)
6) Air supply line (27) Filter (28) Flow meter (28) Regulator
Claims (1)
内に被シール流体より高圧のシール用流体を充満し、該
シール用流体をシール部を通過させて前記被シール流体
側へ向けて流出させることを特徴とする密封装置。A drive system such as a motor that rotates the shaft of various rotating equipment is filled with a sealing fluid having a higher pressure than the fluid to be sealed, and the sealing fluid is caused to flow out toward the fluid to be sealed by passing through a seal portion. A sealing device featuring:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60154289A JPS6217470A (en) | 1985-07-15 | 1985-07-15 | Sealing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60154289A JPS6217470A (en) | 1985-07-15 | 1985-07-15 | Sealing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6217470A true JPS6217470A (en) | 1987-01-26 |
Family
ID=15580887
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP60154289A Pending JPS6217470A (en) | 1985-07-15 | 1985-07-15 | Sealing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6217470A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55150680U (en) * | 1979-04-13 | 1980-10-30 |
-
1985
- 1985-07-15 JP JP60154289A patent/JPS6217470A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55150680U (en) * | 1979-04-13 | 1980-10-30 |
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