CN201190809Y - Two-position three-way unloading valve - Google Patents
Two-position three-way unloading valve Download PDFInfo
- Publication number
- CN201190809Y CN201190809Y CNU2008200706518U CN200820070651U CN201190809Y CN 201190809 Y CN201190809 Y CN 201190809Y CN U2008200706518 U CNU2008200706518 U CN U2008200706518U CN 200820070651 U CN200820070651 U CN 200820070651U CN 201190809 Y CN201190809 Y CN 201190809Y
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- Prior art keywords
- valve
- unloading
- valve body
- load
- oil
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- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a two-position three-way unloading valve, comprising a valve body provided with an oil inlet, an oil outlet and an unloading oil port, and a valve pin in the chamber of the valve body, wherein the valve pin is fit in the chamber of the valve body in a sliding type, the valve pin is provided with a communication oil channel and an unloading oil channel, the oil inlets of the communication oil channel and the unloading oil channel are respectively communicated with the oil inlet and the unloading oil port on the valve body, a compression spring is provided between the valve pin and the unloading oil port in the chamber of the valve body. The two-position three-way unloading valve can automatically unload without external force, having fast response and on-time relief. The two-position three-way unloading valve can prevent medium from flowing reversely to impact a hydraulic pump station, to realize the function as a one-way valve. The two-position three-way unloading valve has simple structure and small volume.
Description
Technical field
The utility model relates to the two-bit triplet unloading valve that hydraulic power unit uses.
Background technique
Unloading valve is mainly used in hydraulic power unit, the air pressure pumping station system, and off-load in time when the system pipeline internal pressure surpasses setting pressure or system and quits work is subjected to the impact of highly pressurised liquid or pressurized gas for a long time to avoid hydraulic pressure or pressure system.Therefore require the unloading valve action to want sensitive quick, off-load is rapid.The unloading valve that is used for pumping station system at present, its course of action is many realizes off-load by external force, as manpower, electromagnetic force etc., this just makes the sensitivity of unloading valve greatly reduce.
The model utility content
The utility model purpose is to provide a kind of and reflects sensitivity, according to the two-bit triplet unloading valve of setting pressure automatic deloading.
For achieving the above object, the utility model can be taked following technical proposals:
Two-bit triplet unloading valve described in the utility model, it comprises valve body, be opened on the described valve body into and out of hydraulic fluid port and off-load hydraulic fluid port, and the spool that is arranged on body cavity; Described spool is slidingly matched and is arranged in the body cavity; In spool, offer and be communicated with oil duct and off-load oil duct; Described connection oil duct filler opening, off-load oil duct filler opening are connected with filler opening, off-load hydraulic fluid port on the valve body respectively; Between spool and valve body off-load hydraulic fluid port, be provided with pressure spring at body cavity.
Described valve body off-load hydraulic fluid port is communicated with the off-load conduit by hollow bolt and the bipyramid cutting ferrule that sets within it.
The utility model advantage is that the off-load operation is finished automatically and need reflect that therefore the sensitivity action is fast by any external force, plays the effect of timely release.When oil hydraulic pump was started working, system reached cracking pressure, and medium promotes described spool and overcomes spring force and move to off-load hydraulic fluid port direction, makes the filler opening of valve body connect the fuel feeding to system with oil outlet by the oil duct that is communicated with in the spool; When the hydraulic pressure air pump inoperative, spool makes spool get back to the origin-location rapidly under the effect of spring force, connection oil duct in the spool is sealed, by the off-load oil duct oil outlet and the off-load hydraulic fluid port of valve body are connected simultaneously, high pressure oil unloads away from the off-load hydraulic fluid port rapidly, prevent medium refluence impact hydraulic power unit, played the one-way valve effect.The utility model is simple in structure simultaneously, volume is little.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in the figure, two-bit triplet unloading valve described in the utility model, it comprises valve body 1, be opened on the described valve body 1 into and out of hydraulic fluid port 2,3 and off-load hydraulic fluid port 4, and the spool 5 that is arranged on body cavity; Described spool 5 is slidingly matched and is arranged in the body cavity; In spool 5, offer and be communicated with oil duct 6 and off-load oil duct 7; Described connection oil duct 6 filler openings, off-load oil duct 7 filler openings are connected with filler opening 2, off-load hydraulic fluid port 4 on the valve body respectively; Between spool 5 and valve body off-load hydraulic fluid port 4, be provided with pressure spring 8 at body cavity.The off-load hydraulic fluid port 4 of valve body 1 is connected with off-load conduit 10 by hollow bolt 9 and the bipyramid cutting ferrule that sets within it.
Claims (2)
1, a kind of two-bit triplet unloading valve, it comprises valve body (1), be opened on the described valve body (1) into and out of hydraulic fluid port (2,3) and off-load hydraulic fluid port (4), and the spool (5) that is arranged on body cavity; It is characterized in that: described spool (5) is slidingly matched and is arranged in the body cavity; In spool (5), offer and be communicated with oil duct (6) and off-load oil duct (7); Described connection oil duct (6) filler opening, off-load oil duct (7) filler opening are connected with filler opening (2), off-load hydraulic fluid port (4) on the valve body respectively; Be positioned between spool (5) and the valve body off-load hydraulic fluid port (4) at body cavity and be provided with pressure spring (8).
2, two-bit triplet unloading valve according to claim 1 is characterized in that: the off-load hydraulic fluid port (4) of described valve body (1) is connected with off-load conduit (10) by hollow bolt (9) and the bipyramid cutting ferrule that sets within it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200706518U CN201190809Y (en) | 2008-05-22 | 2008-05-22 | Two-position three-way unloading valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200706518U CN201190809Y (en) | 2008-05-22 | 2008-05-22 | Two-position three-way unloading valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201190809Y true CN201190809Y (en) | 2009-02-04 |
Family
ID=40334971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200706518U Expired - Fee Related CN201190809Y (en) | 2008-05-22 | 2008-05-22 | Two-position three-way unloading valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201190809Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015144A (en) * | 2016-07-18 | 2016-10-12 | 江苏恒立液压科技有限公司 | Hydraulic unloading device |
| CN110552930A (en) * | 2019-09-23 | 2019-12-10 | 宁波恒通诺达液压股份有限公司 | Hydraulic motor with high climbing performance and engineering transport vehicle |
-
2008
- 2008-05-22 CN CNU2008200706518U patent/CN201190809Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015144A (en) * | 2016-07-18 | 2016-10-12 | 江苏恒立液压科技有限公司 | Hydraulic unloading device |
| CN110552930A (en) * | 2019-09-23 | 2019-12-10 | 宁波恒通诺达液压股份有限公司 | Hydraulic motor with high climbing performance and engineering transport vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090204 |