JPH0531402A - Oil feeder of driving device in centrifugal machine - Google Patents
Oil feeder of driving device in centrifugal machineInfo
- Publication number
- JPH0531402A JPH0531402A JP19052691A JP19052691A JPH0531402A JP H0531402 A JPH0531402 A JP H0531402A JP 19052691 A JP19052691 A JP 19052691A JP 19052691 A JP19052691 A JP 19052691A JP H0531402 A JPH0531402 A JP H0531402A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- damper
- bearing
- driving shaft
- drive shaft
- 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
Links
Landscapes
- Centrifugal Separators (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は遠心機回転体を高速に回
転させる駆動装置のオイル供給機構に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil supply mechanism of a drive device for rotating a centrifuge rotor at high speed.
【０００２】[0002]
【従来の技術】従来のこの種の駆動装置のオイル供給機
構は、例えば本出願人が先に出願した実願平０２−６６
３４４号、特願平０３−２６２３４号に記載のように、
軸受へのオイル供給は駆動軸下端に設けたオイル吸い上
げ部より吸い上げたオイルを吹きかけて行い、軸受外周
部に設けたオイルダンパへのオイル供給は別途付加され
たオイルポンプで行う方式となっていた。また、特表昭
６１−５０２００７号公報に記載のように、駆動軸より
噴出されたオイルが軸受近傍で障害壁に当り、一部が軸
受に入る構造が提案されているが、軸受外周にオイルダ
ンパは存在せず、かつ軸受への給油のみ可能となる構造
であった。2. Description of the Related Art A conventional oil supply mechanism for a drive device of this type is disclosed in Japanese Patent Application No. 02-66 filed by the applicant of the present application.
344 and Japanese Patent Application No. 03-26234,
The oil is supplied to the bearing by spraying the oil sucked up from the oil suction part provided at the lower end of the drive shaft, and the oil supply to the oil damper provided on the outer peripheral part of the bearing is performed by a separately added oil pump. . Further, as described in JP-A-61-502007, a structure has been proposed in which the oil ejected from the drive shaft hits the obstacle wall in the vicinity of the bearing and a part of the oil enters the bearing. There was no damper, and the structure was such that only oil could be supplied to the bearings.
【０００３】[0003]
【発明が解決しようとする課題】従来の遠心機の駆動装
置は、上記した如く、駆動軸の軸受外周に設けられたオ
イルダンパのオイル切れを防止し減衰効果を維持するた
めに駆動装置の外部にオイルダンパへ供給をするための
オイルポンプを別途付加しなければならないという問題
があった。本発明の目的は、前記オイルポンプを設ける
ことなく、軸受外周のオイルダンパにオイルを供給でき
るようにすることである。As described above, the conventional drive device for a centrifugal machine is external to the drive device in order to prevent the oil damper of the oil damper provided on the outer periphery of the bearing of the drive shaft from running out and maintain the damping effect. In addition, there was a problem that an oil pump for supplying oil to the oil damper had to be added separately. An object of the present invention is to be able to supply oil to an oil damper on the outer circumference of a bearing without providing the oil pump.
【０００４】[0004]
【課題を解決するための手段】上記目的は駆動軸下端に
設けられたオイル吸上げ部より吸い上げられたオイルが
軸受のみでなく、軸受外周に設けたオイルダンパにも供
給される構造とすることにより達成される。The above object is to provide a structure in which oil sucked from an oil suction portion provided at the lower end of the drive shaft is supplied not only to the bearing but also to an oil damper provided on the outer circumference of the bearing. Achieved by
【０００５】[0005]
【作用】上記のように構成された遠心機の駆動装置は、
駆動軸に設けられたオイル吸い上げ部よりオイルタンク
内にあるオイルを遠心力で吸い上げ、駆動軸内の通路を
経て軸受近傍に設けられたオイル噴出穴より駆動軸外部
に噴出する。噴出されたオイルは障害壁の役割を果すオ
イルダンパ保持用ホルダの内側円筒面に当り、一部がは
ねかえって軸受に供給され、残りの全部または一部が該
内側円筒面を伝りオイルダンパに供給される。The operation device of the centrifuge constructed as described above is
The oil in the oil tank is sucked up by an oil suction portion provided on the drive shaft by a centrifugal force, and the oil is ejected to the outside of the drive shaft through an oil ejection hole provided near the bearing through a passage in the drive shaft. The ejected oil hits the inner cylindrical surface of the holder for holding the oil damper, which plays the role of an obstacle wall, and part of the oil is repelled and supplied to the bearing. Is supplied to.
【０００６】[0006]
【実施例】以下実施例断面を参照して本発明を説明す
る。図１において、試料２を入れたロータ１は駆動装置
１２により回転させられる。駆動装置１２内の駆動軸５
は２個の軸受３により支持され、上部軸受３の外周には
振動を減衰させるためのオイルダンパ４が設けてある。
また駆動軸５は下端にオイル吸い上げ部７を有し、オイ
ルタンク９内のオイル８を駆動軸５内の通路１０に取り
入れ、軸受３の近傍に設けられたオイル噴出穴１１より
噴出し、オイルダンパ４を保持するためのダンパホルダ
６の本発明障害壁を構成する内側円筒面１３に当てる構
造となっている。The present invention will be described below with reference to cross-sections of examples. In FIG. 1, the rotor 1 containing the sample 2 is rotated by the drive unit 12. Drive shaft 5 in drive device 12
Is supported by two bearings 3, and an oil damper 4 for damping vibration is provided on the outer periphery of the upper bearing 3.
Further, the drive shaft 5 has an oil suction portion 7 at the lower end, and the oil 8 in the oil tank 9 is taken into the passage 10 in the drive shaft 5 and ejected from an oil ejection hole 11 provided in the vicinity of the bearing 3, The structure is such that the damper holder 6 for holding the damper 4 is brought into contact with the inner cylindrical surface 13 forming the obstacle wall of the present invention.
【０００７】今、オイル噴出穴１１より噴出されたオイ
ルは、図２に示す如く、ダンパホルダ６の内側円筒面１
３に当り、一部がはねかえって矢印Ａで示すように軸受
３に供給されて軸受３を潤滑すると共に、残り全てまた
は一部が矢印Ｂで示す如くダンパホルダ６の円筒面１３
に沿ってオイルダンパ４に供給される。Now, as shown in FIG. 2, the oil jetted from the oil jetting hole 11 has the inner cylindrical surface 1 of the damper holder 6
3 and a part thereof is repelled and supplied to the bearing 3 as indicated by an arrow A to lubricate the bearing 3, and the whole or part of the remaining portion is a cylindrical surface 13 of the damper holder 6 as indicated by an arrow B.
Is supplied to the oil damper 4.
【０００８】図３は本発明の他の実施例を示すもので、
前記ダンパホルダ６の内側円筒面１３を、オイルダンパ
４に近づく程径が大きくなるテーパ面１４とし、オイル
ダンパ４に供給するオイル量を増すようにしたものであ
る。FIG. 3 shows another embodiment of the present invention.
The inner cylindrical surface 13 of the damper holder 6 is a tapered surface 14 whose diameter increases toward the oil damper 4, so that the amount of oil supplied to the oil damper 4 is increased.
【０００９】[0009]
【発明の効果】本発明によれば、遠心機駆動装置の駆動
軸内に設けられた通路から外面に通じるオイル噴出穴よ
り噴出されるオイルを軸受に供給すると共に軸受外周部
に設けられたオイルダンパにも供給するようにしたの
で、オイルダンパにオイルを供給するために必要であっ
たオイルポンプを不要とすることができる。According to the present invention, the oil ejected from the oil ejection hole leading to the outer surface from the passage provided in the drive shaft of the centrifuge drive device is supplied to the bearing and the oil provided on the outer peripheral portion of the bearing. Since the oil is also supplied to the damper, the oil pump required for supplying the oil to the oil damper can be eliminated.
【図１】 本発明オイル供給装置の一実施例を示す縦断
面図である。FIG. 1 is a vertical sectional view showing an embodiment of an oil supply device of the present invention.
【図２】 図１の軸受近傍を拡大して示す縦断面図であ
る。FIG. 2 is an enlarged vertical sectional view showing the vicinity of the bearing of FIG.
【図３】 図２の他の実施例を示す縦断面図である。FIG. 3 is a vertical sectional view showing another embodiment of FIG.
１はロータ、２は試料、３は軸受、４はオイルダンパ、
５は駆動軸、６はオイルダンパ、７はオイル吸い上げ
部、８はオイル、９はオイルタンク、１０は通路、１１
はオイル噴出穴、１２は駆動装置、１３は円筒面、１４
はテーパ面である。1 is a rotor, 2 is a sample, 3 is a bearing, 4 is an oil damper,
5 is a drive shaft, 6 is an oil damper, 7 is an oil suction part, 8 is oil, 9 is an oil tank, 10 is a passage, 11
Is an oil ejection hole, 12 is a driving device, 13 is a cylindrical surface, and 14
Is a tapered surface.
Claims (3)
るための通路を有する駆動軸と、該駆動軸を可回転に支
持する少なくとも２個の軸受と、少なくとも上部軸受の
外周に設けられた振動減衰用オイルダンパとを有し、前
記駆動軸の上部軸受の近傍に設けられたオイル噴出穴か
ら潤滑オイルを噴出させて上部軸受に供給するようにし
た遠心機駆動装置において、 前記オイルダンパを保持し、前記駆動軸のオイル噴出穴
に対向する障害壁を有するダンパホルダを設け、前記オ
イル噴出穴から噴出されたオイルの一部が前記上部軸受
に供給され、残りの全部または一部が前記オイルダンパ
に供給されるようにしたことを特徴とする遠心機駆動装
置のオイル供給装置。1. A drive shaft having a passage extending in the vertical direction for sucking up lubricating oil, at least two bearings for rotatably supporting the drive shaft, and vibration damping provided at least on the outer circumference of the upper bearing. In the centrifuge drive device, which has an oil damper for use and which supplies lubricating oil to the upper bearing by injecting lubricating oil from an oil ejection hole provided near the upper bearing of the drive shaft, the oil damper is retained. A damper holder having an obstruction wall facing the oil ejection hole of the drive shaft is provided, a part of the oil ejected from the oil ejection hole is supplied to the upper bearing, and the whole or a part of the rest is supplied to the oil damper. An oil supply device for a centrifuge drive device characterized in that the oil is supplied.
する請求項１記載の遠心機駆動装置のオイル供給装置。2. The oil supply device for a centrifuge drive device according to claim 1, wherein the obstacle wall is a cylindrical surface.
が大きくなるテーパ状の円筒面としたことを特徴とした
請求項１記載の遠心機駆動装置のオイル供給装置。3. The oil supply device for a centrifuge drive apparatus according to claim 1, wherein the obstacle wall is a tapered cylindrical surface whose diameter increases toward the upper bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19052691A JP3175203B2 (en) | 1991-07-31 | 1991-07-31 | Oil supply device for centrifuge drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19052691A JP3175203B2 (en) | 1991-07-31 | 1991-07-31 | Oil supply device for centrifuge drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0531402A true JPH0531402A (en) | 1993-02-09 |
| JP3175203B2 JP3175203B2 (en) | 2001-06-11 |
Family
ID=16259561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19052691A Expired - Lifetime JP3175203B2 (en) | 1991-07-31 | 1991-07-31 | Oil supply device for centrifuge drive |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3175203B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1617952B2 (en) † | 2003-04-08 | 2012-12-26 | Alfa Laval Corporate AB | A driving device for a centrifugal separator |
-
1991
- 1991-07-31 JP JP19052691A patent/JP3175203B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1617952B2 (en) † | 2003-04-08 | 2012-12-26 | Alfa Laval Corporate AB | A driving device for a centrifugal separator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3175203B2 (en) | 2001-06-11 |
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