JPS6297278U - - Google Patents
Info
- Publication number
- JPS6297278U JPS6297278U JP19072785U JP19072785U JPS6297278U JP S6297278 U JPS6297278 U JP S6297278U JP 19072785 U JP19072785 U JP 19072785U JP 19072785 U JP19072785 U JP 19072785U JP S6297278 U JPS6297278 U JP S6297278U
- Authority
- JP
- Japan
- Prior art keywords
- air vent
- pump discharge
- pipe
- pump
- predetermined pressure
- 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
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Reciprocating Pumps (AREA)
Description
第１図は本考案の実施例を示す油圧回路図、第
２図は空気抜き弁の一例を示す縦断面図、第３図
、第４図はそれぞれ空気抜き弁の別の実施例を示
す縦断面図である。
１……油圧ポンプ、２……吸込み管路、４……
吐出管路、５……油タンク、６……リリーフ弁、
７，７ａ，７ｂ……空気抜き管路、８，８ａ，８
ｂ……空気抜き弁。
Fig. 1 is a hydraulic circuit diagram showing an embodiment of the present invention, Fig. 2 is a vertical sectional view showing an example of an air vent valve, and Figs. 3 and 4 are longitudinal sectional views showing other embodiments of the air vent valve. It is. 1...Hydraulic pump, 2...Suction pipe, 4...
Discharge pipe line, 5...oil tank, 6...relief valve,
7, 7a, 7b...Air vent pipe, 8, 8a, 8
b...Air vent valve.
Claims (1)
けられ、この油圧ポンプとリリーフ弁との間の管
路途中に空気抜き管路が分岐接続され、空気抜き
管路の途中に、ポンプ吐出圧が所定圧力末未満の
ときに開弁状態にあつてポンプ吐出油および空気
をタンクに導きかつポンプ吐出圧が所定圧力以上
になると閉弁して空気抜き管路をブロツクする空
気抜き弁が設けられていることを特徴とする油圧
ポンプのキヤビテーシヨン防止回路。 A relief valve is provided in the middle of the discharge pipe of the hydraulic pump, and an air vent pipe is branched and connected in the middle of the pipe between the hydraulic pump and the relief valve, and the pump discharge pressure is set to a predetermined pressure. It is characterized by an air vent valve that opens when the pump discharge pressure is less than a predetermined pressure and guides the pump discharge oil and air to the tank, and closes when the pump discharge pressure exceeds a predetermined pressure to block the air vent line. Cavitation prevention circuit for hydraulic pumps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19072785U JPS6297278U (en) | 1985-12-10 | 1985-12-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19072785U JPS6297278U (en) | 1985-12-10 | 1985-12-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6297278U true JPS6297278U (en) | 1987-06-20 |
Family
ID=31144216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19072785U Pending JPS6297278U (en) | 1985-12-10 | 1985-12-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6297278U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016217492A (en) * | 2015-05-22 | 2016-12-22 | 三菱日立パワーシステムズ株式会社 | Valve system and fluid equipment including the same |
-
1985
- 1985-12-10 JP JP19072785U patent/JPS6297278U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016217492A (en) * | 2015-05-22 | 2016-12-22 | 三菱日立パワーシステムズ株式会社 | Valve system and fluid equipment including the same |
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