JPH02124279U - - Google Patents
Info
- Publication number
- JPH02124279U JPH02124279U JP3301289U JP3301289U JPH02124279U JP H02124279 U JPH02124279 U JP H02124279U JP 3301289 U JP3301289 U JP 3301289U JP 3301289 U JP3301289 U JP 3301289U JP H02124279 U JPH02124279 U JP H02124279U
- Authority
- JP
- Japan
- Prior art keywords
- tank
- fluid
- pump
- actuator
- return passage
- 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
- 239000000872 buffer Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Details Of Reciprocating Pumps (AREA)
Description
第１図は本考案の実施例を示すポンプユニツト
の油圧回路図、第２図はポンプユニツトの要部断
面図、第３図〜第５図はそれぞれ緩衝材の構成を
示すポンプユニツト要部を拡大した断面図である
。また、第６図は従来例を示すポンプユニツトの
油圧回路図である。
１……油圧ポンプ、２……ハウジング、３……
タンク、４……モータ、７……ポート、８……パ
イロツトオペレートチエツク弁、９……オリフイ
ス、１０……戻し通路、１１……緩衝材。
Fig. 1 is a hydraulic circuit diagram of a pump unit showing an embodiment of the present invention, Fig. 2 is a sectional view of the main part of the pump unit, and Figs. FIG. 3 is an enlarged cross-sectional view. Further, FIG. 6 is a hydraulic circuit diagram of a pump unit showing a conventional example. 1...Hydraulic pump, 2...Housing, 3...
Tank, 4...Motor, 7...Port, 8...Pilot operating check valve, 9...Orifice, 10...Return passage, 11...Buffer material.
Claims (1)
、ポンプの吸込用流体を貯留するタンクと、アク
チユエータからの戻り流体をタンクに還流する戻
し通路とを備えたポンプユニツトにおいて、タン
クの内部に戻し通路からの流体の噴出を緩衝する
緩衝材を備えたことを特徴とするポンプユニツト
。 In a pump unit that is equipped with a pump that supplies pressurized fluid to an actuator, a tank that stores suction fluid for the pump, and a return passage that returns fluid returned from the actuator to the tank, there is no flow of water from the return passage into the inside of the tank. A pump unit characterized by being equipped with a buffer material that buffers the ejection of fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989033012U JP2542863Y2 (en) | 1989-03-23 | 1989-03-23 | Pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989033012U JP2542863Y2 (en) | 1989-03-23 | 1989-03-23 | Pumping unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02124279U true JPH02124279U (en) | 1990-10-12 |
| JP2542863Y2 JP2542863Y2 (en) | 1997-07-30 |
Family
ID=31536338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989033012U Expired - Lifetime JP2542863Y2 (en) | 1989-03-23 | 1989-03-23 | Pumping unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2542863Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58172479A (en) * | 1982-04-02 | 1983-10-11 | Hitachi Ltd | Pump intake water tank |
-
1989
- 1989-03-23 JP JP1989033012U patent/JP2542863Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58172479A (en) * | 1982-04-02 | 1983-10-11 | Hitachi Ltd | Pump intake water tank |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2542863Y2 (en) | 1997-07-30 |
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