JPS63193788U - - Google Patents
Info
- Publication number
- JPS63193788U JPS63193788U JP8454187U JP8454187U JPS63193788U JP S63193788 U JPS63193788 U JP S63193788U JP 8454187 U JP8454187 U JP 8454187U JP 8454187 U JP8454187 U JP 8454187U JP S63193788 U JPS63193788 U JP S63193788U
- Authority
- JP
- Japan
- Prior art keywords
- oil
- pump
- valve mechanism
- rotary vacuum
- pump body
- 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
- 239000003921 oil Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
Description
第１図は本考案の一実施例を示す２連形の油回
転真空ポンプの縦断面図であり、第２図はその要
部の詳細拡大図である。第３図は第１図及び第２
図の部分拡大図である。第４図は油送りポンプか
らポンプ室に潤滑油を導く回路図を示し、ａは比
較従来例を、ｂは比較例を、ｃは本考案の実施例
に相当している。
……第１段ポンプ本体、……第２段ポンプ
本体、……油送りポンプ、１……ベースボデイ
、３……駆動軸、３ｂ……駆動軸延出端、１１…
…吸込口、１２……油槽ケース、２１……吸込ポ
ート、２２……フイルター、２３……吐出口、２
４，２５……油通路、２６……弁機構、２７……
弁室、２８……弁体、３２……リリーフ路、３３
……可変オリフイス、０……油。
FIG. 1 is a longitudinal cross-sectional view of a dual oil rotary vacuum pump showing an embodiment of the present invention, and FIG. 2 is a detailed enlarged view of the main parts thereof. Figure 3 is similar to Figure 1 and 2.
It is a partially enlarged view of the figure. FIG. 4 shows a circuit diagram for guiding lubricating oil from an oil feed pump to a pump chamber, in which a corresponds to a comparative conventional example, b corresponds to a comparative example, and c corresponds to an embodiment of the present invention. ...First stage pump body, ...Second stage pump main body, ...Oil feed pump, 1...Base body, 3...Drive shaft, 3b...Drive shaft extension end, 11...
...Suction port, 12...Oil tank case, 21...Suction port, 22...Filter, 23...Discharge port, 2
4, 25...Oil passage, 26...Valve mechanism, 27...
Valve chamber, 28... Valve body, 32... Relief path, 33
...Variable orifice, 0...Oil.
Claims (1)
ポンプ本体のポンプ室に圧送する油送りポンプを
備えた油回転真空ポンプにおいて、前記油送りポ
ンプから前記ポンプ本体のポンプ室に油を送り込
む油通路に、ポンプ停止時での油の侵入を阻止す
る弁機構を設けるとともに、この弁機構の内部に
該弁機構から油をリリーフさせるリリーフ路を連
接したことを特徴とする油回転真空ポンプ。 In an oil rotary vacuum pump equipped with an oil feed pump that pumps oil stored in an oil tank case surrounding a pump body to a pump chamber of the pump body, an oil passage that feeds oil from the oil feed pump to the pump chamber of the pump body is provided. An oil rotary vacuum pump characterized in that a valve mechanism is provided to prevent oil from entering when the pump is stopped, and a relief passage for relieving oil from the valve mechanism is connected inside the valve mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987084541U JP2503619Y2 (en) | 1987-05-30 | 1987-05-30 | Oil rotary vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987084541U JP2503619Y2 (en) | 1987-05-30 | 1987-05-30 | Oil rotary vacuum pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63193788U true JPS63193788U (en) | 1988-12-13 |
| JP2503619Y2 JP2503619Y2 (en) | 1996-07-03 |
Family
ID=30939138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987084541U Expired - Lifetime JP2503619Y2 (en) | 1987-05-30 | 1987-05-30 | Oil rotary vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2503619Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009533598A (en) * | 2006-04-10 | 2009-09-17 | ワブコ オートモーティブ ユーケー リミテッド | Improved vacuum pump |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6248987A (en) * | 1985-08-27 | 1987-03-03 | Toshiba Seiki Kk | Device for feeding oil for oil-sealed rotary vacuum pump |
-
1987
- 1987-05-30 JP JP1987084541U patent/JP2503619Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6248987A (en) * | 1985-08-27 | 1987-03-03 | Toshiba Seiki Kk | Device for feeding oil for oil-sealed rotary vacuum pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009533598A (en) * | 2006-04-10 | 2009-09-17 | ワブコ オートモーティブ ユーケー リミテッド | Improved vacuum pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2503619Y2 (en) | 1996-07-03 |