JPH0365887U - - Google Patents
Info
- Publication number
- JPH0365887U JPH0365887U JP12655989U JP12655989U JPH0365887U JP H0365887 U JPH0365887 U JP H0365887U JP 12655989 U JP12655989 U JP 12655989U JP 12655989 U JP12655989 U JP 12655989U JP H0365887 U JPH0365887 U JP H0365887U
- Authority
- JP
- Japan
- Prior art keywords
- vacuum pump
- oil
- solenoid valve
- rotary vacuum
- starting
- 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
- 230000002265 prevention Effects 0.000 claims 1
- 239000003921 oil Substances 0.000 description 5
- 239000010687 lubricating oil Substances 0.000 description 1
Description
第１図は本考案の一実施例を示す油回転真空ポ
ンプの断面図、第２図は従来の油回転真空ポンプ
の外形図である。
１……シリンダー、２……ローター、３……吸
気管、４……ブレード、５……排気弁、６……オ
イルチヤンバー、７……排気管、８……給油管、
９……給油管、１０……潤滑油、１１……リーク
弁、１２……タイマー、１３……電流リレー、１
４……バイパス管路、１５……電磁弁、１５……
駆動モーター。
FIG. 1 is a sectional view of an oil rotary vacuum pump showing an embodiment of the present invention, and FIG. 2 is an external view of a conventional oil rotary vacuum pump. 1... Cylinder, 2... Rotor, 3... Intake pipe, 4... Blade, 5... Exhaust valve, 6... Oil chamber, 7... Exhaust pipe, 8... Oil supply pipe,
9... Oil supply pipe, 10... Lubricating oil, 11... Leak valve, 12... Timer, 13... Current relay, 1
4... Bypass pipe line, 15... Solenoid valve, 15...
Drive motor.
Claims (1)
真空ポンプの上位に排気弁を介して設けられたオ
イルチヤンバーを連通させるバイパス管路と、こ
の管路を開閉する電磁弁と、タイマー及び電流リ
レーからなり前記電磁弁を制御する制御装置を配
設し、油回転真空ポンプ始動時に於ける駆動モー
ターの電流値と始動電流の持続時間により前記電
磁弁を作動させるようにしたことを特徴とする油
回転真空ポンプの過負荷防止装置。 A bypass pipe that communicates the cylinder part of the oil rotary vacuum pump with an oil chamber provided above the oil rotary vacuum pump via an exhaust valve, a solenoid valve that opens and closes this pipe, a timer, and a current relay. The oil-powered rotary vacuum pump is characterized in that a control device for controlling the solenoid valve is provided, and the solenoid valve is operated according to the current value of the drive motor and the duration of the starting current when starting the oil-rotated vacuum pump. Vacuum pump overload prevention device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12655989U JPH0365887U (en) | 1989-10-31 | 1989-10-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12655989U JPH0365887U (en) | 1989-10-31 | 1989-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0365887U true JPH0365887U (en) | 1991-06-26 |
Family
ID=31674365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12655989U Pending JPH0365887U (en) | 1989-10-31 | 1989-10-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0365887U (en) |
-
1989
- 1989-10-31 JP JP12655989U patent/JPH0365887U/ja active Pending