CN102287364A - Sealing device for outlet valve of plunger pair - Google Patents
Sealing device for outlet valve of plunger pair Download PDFInfo
- Publication number
- CN102287364A CN102287364A CN201110246282XA CN201110246282A CN102287364A CN 102287364 A CN102287364 A CN 102287364A CN 201110246282X A CN201110246282X A CN 201110246282XA CN 201110246282 A CN201110246282 A CN 201110246282A CN 102287364 A CN102287364 A CN 102287364A
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- CN
- China
- Prior art keywords
- spring seat
- outlet valve
- described spring
- seal arrangement
- piston set
- 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.)
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Abstract
The invention discloses a sealing device for an outlet valve of a plunger pair. The sealing device is arranged in an outlet valve cavity (4.1) of a plunger sleeve (4) of the plunger pair and comprises a steel ball (1), a spring (2) and a spring seat (3), the steel ball (1) is propped against an oil outlet channel of the outlet valve cavity (4.1) of the plunger sleeve (4), one end of the spring (2) is propped against the steel ball (1), the other end of the spring (2) is propped against the spring seat (3), the spring seat (3) is connected with an oil outlet of the plunger sleeve (4), and the spring seat (3) is provided with at least one oil outlet through hole. The sealing device has the advantages of good sealing effect, convenience for installation and long service life.
Description
Technical field
The present invention relates to a kind of seal arrangement that is used for the trunk piston set outlet valve.
Background technique
Trunk piston set is component in the hydraulic equipment, trunk piston set is provided with oiling valve, outlet valve, seal arrangement on the trunk piston set outlet valve mainly is made of fixed cover, valve seat, valve plate, Returnning spring at present, adopt the seal arrangement of this structure owing to be by valve plate and valve seat linear sealing, sealing effect difference and because valve plate, valve seat and outlet valve are drive fit, to use pressure facility during installation, comparatively bother, and when going out oil pressure when big, the power that valve plate is subjected to is bigger, Returnning spring often is compressed into limit position, and working life is short.
Summary of the invention
Technical problem to be solved by this invention is: a kind of good sealing effect, easy for installation, seal arrangement that long service life is used for the trunk piston set outlet valve are provided.
The technical solution used in the present invention is: a kind of seal arrangement that following structure is used for the trunk piston set outlet valve that has is provided, this device is installed in the fuel-displaced valve pocket of plunger bushing of trunk piston set, comprise steel ball, spring, spring seat, the fuel-displaced valve pocket oil discharge passage of described steel ball and plunger bushing offsets, one end and the steel ball of described spring offset, the other end and spring seat offset, and described spring seat is placed in the oil outlet place with plunger and is connected, and described spring seat is provided with at least one and goes out oil hole.
Adopt the seal arrangement of this structure, following advantage compared with prior art arranged:
1. spring seals by forcing in steel ball, than the linear sealing of valve plate valve seat, is sealed into the ball sealing, and leakage efficiency is higher, the better effects if of sealing.
2. the seal arrangement part is few, during assembling, only needs steel ball is put in the hole, spring is put in again, and at last the spring seat alignment springs is compressed into, and installs and has just finished, and installs very convenient.
3. the spring seat of described seal arrangement is provided with inside boss, and when oil pressure is bigger, the steel ball pressure spring stops during to the position of boss, and amount of spring compression is little, has protected spring, has prolonged the life-span of this seal arrangement.
As improvement, described spring seat is connected with plunger bushing and is meant that spring seat is connected with the plunger bushing drive fit, this structure can make spring seat and trunk piston set be connected more fastening.
As improvement, described spring is a volute spring, can satisfy the inner small and outside big structure of oil outlet.
As improvement, described spring seat is a disc-shape, satisfies the requirement of present oil outlet round structure.
As improvement, the oil hole that goes out of described spring seat is a plurality of, more helps fuel-displaced smooth and easy.
As improvement, the oil hole that goes out of described spring seat evenly distributes along a concentric circle, this structure is when fuel-displaced, the oil pressure that spring seat is subjected to when fuel-displaced is comparatively even, spring seat is stressed also more even, avoid because the spring seat unbalance stress causes tilting between spring seat and the plunger bushing shortcoming of spring seat dismounting difficulty.
As improvement, described spring seat center has inside solid boss, because when fuel-displaced; steel ball is subjected to oily extrusion spring, halts when steel ball arrives at this boss, and the decrement of spring also just stops; the distance of avoiding compressing surpasses the limit of spring, thereby protects spring.
Description of drawings
Accompanying drawing 1 is the structural representation of the trunk piston set of the present invention's installation.
Accompanying drawing 2 is structure for amplifying schematic representation of the present invention.
Among the figure 1, steel ball, 2, spring, 3, spring seat, 4, plunger bushing.
Embodiment
Below in conjunction with the drawings and specific embodiments invention is further described in detail.
As shown in the figure, seal arrangement of the present invention, be installed in the fuel-displaced valve pocket of plunger bushing 4, between the oil outlet of oil discharge passage, outlet valve, comprise steel ball 1, spring 2, spring seat 3, fuel-displaced valve pocket 4.1 oil discharge passages of described steel ball and plunger bushing 4 offset, one end and the steel ball 1 of described spring 2 offset, the other end and spring seat 3 offset, and described spring seat 3 is connected in the oil outlet place with plunger bushing 4, and described spring seat 3 is provided with at least one and goes out oil hole.
The present invention in the specific implementation, described spring seat 3 is connected with the oil outlet place of plunger bushing 4 at outlet valve by drive fit, when outlet valve is inner small and outside big shape, spring 2 can adopt volute spring, steel ball 1 can be selected according to the size of the passage that communicates with fuel-displaced valve pocket, as preferably, described spring seat 3 can be processed as disc-shape, be drilled with a plurality of oil holes that go out on the spring seat 3, described spring seat 3 a plurality of go out oil hole and evenly distribute along a concentric circle, an inside solid boss can be processed in spring seat 3 centers, and the height of solid boss is 0～4 millimeter.
The present invention is when assembling, earlier steel ball 1 is put in the fuel-displaced valve pocket 4.1, aim at the oil discharge passage that communicates with oil pocket in the plunger bushing, again that volute spring is a little end withstands steel ball 1 back precession and goes, and spring seat 3 is connected with plunger bushing 4 by drive fit at 4.1 mouthfuls of places of plunger bushing 4 fuel-displaced valve pockets at last.
Claims (7)
1. seal arrangement that is used for the trunk piston set outlet valve, this device is installed in the fuel-displaced valve pocket (4.1) of plunger bushing (4) of trunk piston set, it is characterized in that: comprise steel ball (1), spring (2), spring seat (3), described steel ball (1) offsets with fuel-displaced valve pocket (4.1) oil discharge passage of plunger bushing (4), one end of described spring (2) and steel ball (1) offset, the other end and spring seat (3) offset, described spring seat (3) is connected in the oil outlet place with plunger bushing (4), and described spring seat (3) is provided with at least one and goes out oil hole.
2. the seal arrangement that is used for the trunk piston set outlet valve according to claim 1 is characterized in that: described spring seat (3) is connected in the oil outlet place with plunger bushing (4) and is meant that spring seat (3) is connected in oil outlet place drive fit with plunger bushing (4).
3. the seal arrangement that is used for the trunk piston set outlet valve according to claim 1 is characterized in that: described spring (2) is a volute spring.
4. the seal arrangement that is used for the trunk piston set outlet valve according to claim 1 is characterized in that: described spring seat (3) is a disc-shape.
5. the seal arrangement that is used for the trunk piston set outlet valve according to claim 4 is characterized in that: the oil hole that goes out of described spring seat (3) is a plurality of.
6. the seal arrangement that is used for the trunk piston set outlet valve according to claim 4 is characterized in that: the oil hole that goes out of described spring seat (3) evenly distributes along a concentric circle.
7. the seal arrangement that is used for the trunk piston set outlet valve according to claim 1 is characterized in that: described spring seat (3) center has inside solid boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110246282XA CN102287364A (en) | 2011-08-25 | 2011-08-25 | Sealing device for outlet valve of plunger pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110246282XA CN102287364A (en) | 2011-08-25 | 2011-08-25 | Sealing device for outlet valve of plunger pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102287364A true CN102287364A (en) | 2011-12-21 |
Family
ID=45334042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110246282XA Pending CN102287364A (en) | 2011-08-25 | 2011-08-25 | Sealing device for outlet valve of plunger pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102287364A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6123509A (en) * | 1998-08-10 | 2000-09-26 | Hung; Fred L. | Pressure valve device for a cleaning apparatus |
| CN201671809U (en) * | 2010-05-24 | 2010-12-15 | 浙江万向精工有限公司 | Check valve of plunger pump |
| CN201810550U (en) * | 2010-09-28 | 2011-04-27 | 宁波赛维思机械有限公司 | Plunger pair |
| CN202194818U (en) * | 2011-08-25 | 2012-04-18 | 宁波赛维思机械有限公司 | Sealing device for oil outlet valve of plunger pair |
-
2011
- 2011-08-25 CN CN201110246282XA patent/CN102287364A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6123509A (en) * | 1998-08-10 | 2000-09-26 | Hung; Fred L. | Pressure valve device for a cleaning apparatus |
| CN201671809U (en) * | 2010-05-24 | 2010-12-15 | 浙江万向精工有限公司 | Check valve of plunger pump |
| CN201810550U (en) * | 2010-09-28 | 2011-04-27 | 宁波赛维思机械有限公司 | Plunger pair |
| CN202194818U (en) * | 2011-08-25 | 2012-04-18 | 宁波赛维思机械有限公司 | Sealing device for oil outlet valve of plunger pair |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20111221 |