JPS631794A - Spray lubricating device for oil free screw vacuum pump - Google Patents
Spray lubricating device for oil free screw vacuum pumpInfo
- Publication number
- JPS631794A JPS631794A JP14302386A JP14302386A JPS631794A JP S631794 A JPS631794 A JP S631794A JP 14302386 A JP14302386 A JP 14302386A JP 14302386 A JP14302386 A JP 14302386A JP S631794 A JPS631794 A JP S631794A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- bearing
- oil sump
- vacuum pump
- screw vacuum
- 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
- 230000001050 lubricating effect Effects 0.000 title abstract description 4
- 239000007921 spray Substances 0.000 title abstract description 3
- 239000003921 oil Substances 0.000 claims abstract description 58
- 239000010687 lubricating oil Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000005461 lubrication Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 4
- XNMARPWJSQWVGC-UHFFFAOYSA-N 2-[3-[11-[[5-(dimethylamino)naphthalen-1-yl]sulfonylamino]undecanoylamino]propoxy]-4-[(5,5,8,8-tetramethyl-6,7-dihydronaphthalene-2-carbonyl)amino]benzoic acid Chemical compound CC1(C)CCC(C)(C)C=2C1=CC(C(=O)NC=1C=C(C(=CC=1)C(O)=O)OCCCNC(=O)CCCCCCCCCCNS(=O)(=O)C1=C3C=CC=C(C3=CC=C1)N(C)C)=CC=2 XNMARPWJSQWVGC-UHFFFAOYSA-N 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 210000000577 adipose tissue Anatomy 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、オイルフリースクリユー真空ポンプの飛まつ
給油装置に係り、特に高速回転軸受用の給油装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a splash lubrication device for an oil-free screw vacuum pump, and particularly to a lubrication device for high-speed rotation bearings.
従来の装置は、特開昭６０−１４５４７５ 号や特開昭
−２１６０８９号に記載のように、２軸式の真空ポンプ
のころがり軸受の給油法は油だめ室の潤滑油を、油すく
い円板もしくはタイミングギヤ等によってすくい上げ、
その飛まつが軸受にかかることによって潤滑する方式で
ある。しかしこの方式では、軸受のり、・Ｎｒｉｉ（Ｄ
−”軸受の平均径□（ｍ）、Ｎ＝軸軸受回転数（ｒｐ）
）が数十刃をこえ石と軸受が焼きつき、使用することが
できない。Conventional devices, as described in JP-A-60-145475 and JP-A-216089, are known for lubricating the rolling bearings of two-shaft vacuum pumps by transferring lubricating oil from the oil sump chamber to an oil scoop disc. Or scoop it up with a timing gear etc.
This method lubricates the bearings by splashing them onto the bearings. However, in this method, the bearing glue, ・Nrii (D
-”Average diameter of bearing □ (m), N = shaft bearing rotation speed (rp)
) exceeds dozens of blades, and the stone and bearings are seize up, making it unusable.
上記従来技術は真空ポンプがモータ直、締ぐらいまでの
回転数で更用されている時は、Ｄ、・Ｎ値も数十万以下
でちり、有効であったが、オイルツーリスクリュー真空
ポンプのようにり、・Ｎ値が数十万以上のころがりセ受
では高速回転のため、軸受に届く油が不足し、かつ油だ
め室の油温か高くなりついには軸受が焼きつくという問
題が生ずる。The above conventional technology was effective when the vacuum pump was used directly with the motor at a rotation speed up to tightening, and the D and N values were less than several hundred thousand, but the oil tool screw vacuum pump was effective. In a rolling bearing with an N value of several hundred thousand or more, due to the high speed rotation, there is a problem that there is not enough oil to reach the bearing, and the oil temperature in the oil sump chamber becomes high, eventually causing the bearing to seize up.
本発明の目的は、真空中でり、・Ｎ値が数十万以上で使
用可能なころがり軸受用の飛まつ給油法ｉ提供すること
にある。An object of the present invention is to provide a method of spray lubrication for rolling bearings that can be used in a vacuum and with an N value of several hundred thousand or more.
上記目的は、軸受より上側に第２の油だめを設け、この
油だめにたまった油を軸受まで導く導孔を設け、さらに
軸受の下側に位置する第１の油だめ内にフィンを有する
冷却水通路を設けることにより達成される。The above purpose is to provide a second oil sump above the bearing, provide a guide hole to guide the oil accumulated in this oil sump to the bearing, and further have fins in the first oil sump located below the bearing. This is achieved by providing a cooling water passage.
〔作用〕
軸受より上側に設けられた第２の油だめば、油すくい円
板によってはね上げられた油がたまる貯油池の役目をし
、この第２の油だめから軸受までは導孔で結ばれている
ため、軸受に十分かつ確実に給油することができ、さら
に軸受の発熱により温められた排油は冷却水により冷却
され、またこの冷却伝熱面にはフィンが形成されている
ため冷却効果が大きくなっている。[Function] The second oil sump installed above the bearing serves as an oil storage reservoir for the oil splashed up by the oil scooping disc, and the second oil sump is connected to the bearing by a guide hole. This allows the bearing to be sufficiently and reliably lubricated, and the waste oil heated by the heat generated by the bearing is cooled by cooling water, and the cooling heat transfer surface has fins, which improves the cooling effect. is getting bigger.
以上のような作用を有するので従来の方法に比べ、軸受
への給油量の増大および潤滑油の十分な冷却が可能とな
る。Because of the above-mentioned effects, it is possible to increase the amount of oil supplied to the bearing and to sufficiently cool the lubricating oil compared to conventional methods.
以下、本発明の一実施例をオイルフリー真空ポンプの吸
込側の軸受について第１図および第２図により説明する
。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 and 2 regarding a bearing on the suction side of an oil-free vacuum pump.
雄ロータ１と雌ロータ２は作動室３内において互にかみ
あい、吸込ケーシング４には吸込側軸受５、油切り６、
シャフトシール７が納められ、両ロータを回転自在に支
承している。本実施例では軸受５には円筒ころ軸受を使
用している。雌ロータ２の軸端には油すくい円板８がナ
ツト９により取付けられ、油すくい円板８の下方は吸込
ケーシング４とこれに７ランジ止めされた吸入力カバ１
０とで作られた第１の油だめＩＩＫためられたｌ滑油１
２につかっている。また潤滑油１２と接つする吸入力カ
バ１０の下方には水ジャケット１３が設けられ、複数の
鋳物のフィン１４が潤滑油１２中に出つばっている。The male rotor 1 and the female rotor 2 mesh with each other in the working chamber 3, and the suction casing 4 has a suction side bearing 5, an oil drain 6,
A shaft seal 7 is housed therein and rotatably supports both rotors. In this embodiment, a cylindrical roller bearing is used as the bearing 5. An oil scooping disk 8 is attached to the shaft end of the female rotor 2 with a nut 9, and below the oil scooping disk 8 is a suction casing 4 and a suction force cover 1 fixed to the suction casing 4 by a 7-lunge.
0 and 1st oil sump IIK stored l oil 1
It is used for 2. Further, a water jacket 13 is provided below the suction force cover 10 in contact with the lubricating oil 12, and a plurality of cast fins 14 protrude into the lubricating oil 12.
また吸込ケーシング４の吸込側軸受５の上側にはダム１
５を有する第２の油だめ１６が設けられ、この第２の油
だめ１６の下部は導孔１７およびフランジ１８に設けら
れた尋人１９により軸受５と連通している。吸入力カバ
１ｏの上部には排気孔２０が設けられ、図示していない
導管およびオイルトラップを介して真空ポンプの吸込に
連通している。またこの排気孔２ｏに直接飛沫油がかが
らないように飛沫防ぎよ壁２１が設けられている。In addition, a dam 1 is placed above the suction side bearing 5 of the suction casing 4.
A second oil sump 16 having a diameter of 5 is provided, and the lower part of the second oil sump 16 communicates with the bearing 5 through a guide hole 17 and a fat pad 19 provided in the flange 18 . An exhaust hole 20 is provided in the upper part of the suction force cover 1o, and communicates with the suction of the vacuum pump via a conduit and an oil trap (not shown). Further, a splash-preventing wall 21 is provided to prevent splashed oil from directly splashing onto the exhaust hole 2o.
この防ぎよ壁２１は吸入力カバ１０の軸方向の全幅にわ
たって設けられ、吸込ケーシング４の側は下方に傾斜し
ており、その吸込ケーシング側端部には傾斜板２４が複
数のビス２５により固定されている。また水ジャケット
１３は水入口２２と水出口２３とを有している。軸受５
と作動室３との間には油切り６とシャフトシール７がス
テップリング２６により吸込ケーシング４に固定されて
いる。This prevention wall 21 is provided over the entire width of the suction force cover 10 in the axial direction, and the side of the suction casing 4 is inclined downward, and an inclined plate 24 is fixed to the end of the suction casing side with a plurality of screws 25. has been done. The water jacket 13 also has a water inlet 22 and a water outlet 23. Bearing 5
An oil drain 6 and a shaft seal 7 are fixed to the suction casing 4 by a step ring 26 between and the working chamber 3.
真空ポンプが起動されると、吸入力カバ１０内の空気あ
るいはガスは排気孔２０よりオイルトラップ（図示せず
）を介してポンプに吸引されるため、吸入力カバ１０内
はすみやかに１０−４〜１’ｌ’ｏｒｒ台の真空となる
。When the vacuum pump is started, the air or gas inside the suction force cover 10 is sucked into the pump from the exhaust hole 20 through an oil trap (not shown), so that the inside of the suction force cover 10 quickly becomes 10-4. The vacuum is on the order of ~1'l'orr.
雌ロータ２の軸端に取付けられた油すくい円板８の回転
により、第１の油だめ１１内の潤滑油１２は吸入力カバ
１０内の側壁にはねかけられるが、その飛まつは主とし
て円板８の延長平面上にはねかけられる。この内張まつ
防ぎよ壁２１にかかった油はその傾斜によシ傾斜板２４
の方に導かれ、傾斜板２４をつたわって第２の油だめ１
６に落下する。この油だめ１６の油は導孔１７．尋人１
９を通って軸受５に導かれ、軸受５の潤滑に給される。Due to the rotation of the oil scooping disk 8 attached to the shaft end of the female rotor 2, the lubricating oil 12 in the first oil sump 11 is splashed onto the side wall inside the suction force cover 10, but the splash is mainly caused by It is splashed onto the extended plane of the disk 8. The oil spilled onto the lining wall 21 is removed from the sloping plate 24.
is guided toward the second oil sump 1 through the inclined plate 24.
Fall to 6. The oil in this oil sump 16 flows through the guide hole 17. Hirojin 1
9 to the bearing 5, and is supplied to lubricate the bearing 5.
軸受５へ供された油の一部は排油孔２７より第１の油だ
め１１へ落下する。また第１の油だめ１１中の潤滑油１
２は水ジャケット′１３中を通る冷却水によって、フィ
ン１４を介して冷却される。A portion of the oil supplied to the bearing 5 falls into the first oil sump 11 from the oil drain hole 27. Also, the lubricating oil 1 in the first oil sump 11
2 is cooled via the fins 14 by cooling water passing through the water jacket '13.
高速回転の軸受の潤滑油の役目は主としてその冷却であ
るが、本実施例によれば従来例に見られるような給油法
に比べて数倍の油を供することができる。また第１の油
だめの油を十分冷却することができるので、結局軸受温
１３１十分下げることができる。The role of lubricating oil in high-speed rotating bearings is primarily to cool the bearings, but according to this embodiment, it is possible to supply several times as much oil as in the conventional lubricating method. Furthermore, since the oil in the first oil sump can be sufficiently cooled, the bearing temperature 131 can be sufficiently lowered.
以上のように本発明によれば、冷却された潤滑油を確実
に軸受に供給することができ、Ｄ、−Ｎ値が数十万以上
の軸受でも焼付くことがない飛まつ給油法を実現できる
。As described above, according to the present invention, cooled lubricating oil can be reliably supplied to bearings, and a splash lubrication method that does not seize even bearings with D and -N values of several hundred thousand or more has been realized. can.
第１図は本発明の一実施例の部分縦断面図、第２図は第
１図の１−１線断面図である。FIG. 1 is a partial longitudinal sectional view of an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line 1--1 in FIG.
Claims (1)
ータを収納するケーシングと、両ロータを支承する軸受
と、ガスの漏洩を防止するシャフトシールと、軸受排油
の油切りと、ロータの軸端に取付けられた油すくい円板
と、前記軸受の下側に位置する油だめとを有するオイル
フリースクリュー真空ポンプの飛まつ給油装置において
、前記油だめの潤滑油を壁をへだてて間接的に冷却する
手段を有することを特徴とするオイルフリースクリュー
真空ポンプの飛まつ給油装置。 ２、特許請求の範囲第１項において冷却手段が、油だめ
中に複数のフィンを有する水ジャケットであるオイルフ
リースクリュー真空ポンプの飛まつ給油装置。 ３、特許請求の範囲第１項または第２項記載のオイルフ
リースクリュー真空ポンプの飛まつ給油装置において、
前記軸受の上側の位置に第２の油だめが設けられ、この
油だめと軸受とが導孔によつて連通されていることを特
徴とするオイルフリー真空ポンプの飛まつ給油装置。[Claims] 1. A male rotor and a female rotor that are meshed with each other, a casing that houses both rotors, a bearing that supports both rotors, a shaft seal that prevents gas leakage, and a shaft seal that prevents the bearing from draining oil. In a splash lubrication device for an oil-free screw vacuum pump, which has an oil drain, an oil scoop disk attached to the shaft end of a rotor, and an oil sump located below the bearing, the lubricating oil in the oil sump is removed. A splash lubrication device for an oil-free screw vacuum pump, characterized by having a means for indirectly cooling a wall. 2. A splash lubrication device for an oil-free screw vacuum pump according to claim 1, wherein the cooling means is a water jacket having a plurality of fins in an oil sump. 3. In the splash lubrication device for an oil-free screw vacuum pump according to claim 1 or 2,
A splash lubrication device for an oil-free vacuum pump, characterized in that a second oil sump is provided above the bearing, and the oil sump and the bearing are communicated through a guide hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14302386A JPS631794A (en) | 1986-06-20 | 1986-06-20 | Spray lubricating device for oil free screw vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14302386A JPS631794A (en) | 1986-06-20 | 1986-06-20 | Spray lubricating device for oil free screw vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS631794A true JPS631794A (en) | 1988-01-06 |
Family
ID=15329119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14302386A Pending JPS631794A (en) | 1986-06-20 | 1986-06-20 | Spray lubricating device for oil free screw vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS631794A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002317779A (en) * | 2001-04-20 | 2002-10-31 | Tokico Ltd | Scroll fluid machine |
| JP6473280B1 (en) * | 2017-10-30 | 2019-02-20 | 株式会社アルバック | Vacuum pump |
| WO2019087447A1 (en) * | 2017-10-30 | 2019-05-09 | 株式会社アルバック | Vacuum pump |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60216089A (en) * | 1984-04-11 | 1985-10-29 | Hitachi Ltd | Screw vacuum pump |
-
1986
- 1986-06-20 JP JP14302386A patent/JPS631794A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60216089A (en) * | 1984-04-11 | 1985-10-29 | Hitachi Ltd | Screw vacuum pump |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002317779A (en) * | 2001-04-20 | 2002-10-31 | Tokico Ltd | Scroll fluid machine |
| JP4485096B2 (en) * | 2001-04-20 | 2010-06-16 | 株式会社日立製作所 | Scroll type fluid machine |
| JP6473280B1 (en) * | 2017-10-30 | 2019-02-20 | 株式会社アルバック | Vacuum pump |
| WO2019087447A1 (en) * | 2017-10-30 | 2019-05-09 | 株式会社アルバック | Vacuum pump |
| US10837447B2 (en) | 2017-10-30 | 2020-11-17 | Ulvac, Inc. | Vacuum pump having a first housing with a supply port and a second housing with a recess portion |
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