JPH0392586U - - Google Patents
Info
- Publication number
- JPH0392586U JPH0392586U JP15195389U JP15195389U JPH0392586U JP H0392586 U JPH0392586 U JP H0392586U JP 15195389 U JP15195389 U JP 15195389U JP 15195389 U JP15195389 U JP 15195389U JP H0392586 U JPH0392586 U JP H0392586U
- Authority
- JP
- Japan
- Prior art keywords
- pump
- rotary vacuum
- oil rotary
- passage
- vacuum pump
- 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
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は本考案の一実施例を示す模式図、第２
図は変形例を示す第１図対応の模式図、第３図は
従来例を示す第１図及び第２図相当の模式図であ
る。
Ｐ１……第１ポンプ室、Ｐ２……第２ポンプ室
、６，７……ガスバラスト用通路、８……バルブ
。
Fig. 1 is a schematic diagram showing an embodiment of the present invention;
The figure is a schematic diagram corresponding to FIG. 1 showing a modified example, and FIG. 3 is a schematic diagram corresponding to FIGS. 1 and 2 showing a conventional example. P1 ...first pump chamber, P2 ...second pump chamber, 6, 7...gas ballast passage, 8...valve.
Claims (1)
て構成される油回転真空ポンプにおいて、前記両
ポンプ室にそれぞれガスバラスト用通路を接続す
るとともに、少なくとも第１ポンプ室のガスバラ
スト用通路に該通路を開閉し得るバルブを設けた
ことを特徴とする油回転真空ポンプ。 In an oil rotary vacuum pump configured by connecting a first pump chamber and a second pump chamber in series, a gas ballast passage is connected to each of the two pump chambers, and at least a gas ballast passage in the first pump chamber. An oil rotary vacuum pump characterized in that an oil rotary vacuum pump is provided with a valve that can open and close the passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15195389U JPH0392586U (en) | 1989-12-29 | 1989-12-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15195389U JPH0392586U (en) | 1989-12-29 | 1989-12-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0392586U true JPH0392586U (en) | 1991-09-20 |
Family
ID=31698234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15195389U Pending JPH0392586U (en) | 1989-12-29 | 1989-12-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0392586U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010058089A (en) * | 2008-09-05 | 2010-03-18 | Hitachi Koki Co Ltd | Centrifuge |
-
1989
- 1989-12-29 JP JP15195389U patent/JPH0392586U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010058089A (en) * | 2008-09-05 | 2010-03-18 | Hitachi Koki Co Ltd | Centrifuge |