CN101769249A - Plunger piston pair - Google Patents
Plunger piston pair Download PDFInfo
- Publication number
- CN101769249A CN101769249A CN 201010122866 CN201010122866A CN101769249A CN 101769249 A CN101769249 A CN 101769249A CN 201010122866 CN201010122866 CN 201010122866 CN 201010122866 A CN201010122866 A CN 201010122866A CN 101769249 A CN101769249 A CN 101769249A
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- China
- Prior art keywords
- valve
- plunger bushing
- fixed cover
- oil
- piston set
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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.)
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Links
- 239000000446 fuel Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The present invention discloses a plunger piston pair comprising a plunger piston (1), a plunger piston sleeve (2) provided with an oil chamber (2.1), an oil inlet valve (3) and an oil outlet valve (4), wherein the oil inlet valve (3) is arranged at an opening of the oil chamber (2.1) of the plunger piston sleeve (2); the plunger piston sleeve (2) is provided with a redial through hole (2.2) communicated with the oil chamber (2.1); and the oil outlet valve (4) is arranged in the redial through hole (2.2). The plunger piston pair has the advantages of simple assembly, small volume, light weight, low cost and high volume efficiency.
Description
Technical field
The present invention relates to the ultrahigh-pressure hydraulic element, specifically is a kind of structure-integrated trunk piston set.
Background technique
Trunk piston set is the element in the plunger pump, and present trunk piston set structurally is split, when plunger pump assembles, just plunger, plunger bushing, oiling valve, outlet valve, spring and two spring seats etc. is assembled together, and becomes trunk piston set; Be provided with the oil pocket that distributes along its axis in the described plunger bushing, one of described two spring seat are linked on the excircle of plunger, another is installed on the excircle of plunger bushing, the two ends of described spring offset with two spring seats respectively, described plunger under the oil pressure effect with the plunger bushing sliding fit, and by described spring reset.This oiling valve and outlet valve are installed in the fuel tap body, and are installed in the opening of the oil pocket of plunger bushing along the axis of plunger bushing.There is following shortcoming in the trunk piston set of above prior art:
1, because for dividing body structure, assembling is complicated.
2, because for dividing body structure, this oiling valve and outlet valve are installed on the fuel tap body, and the fuel tap body is installed along the axis of plunger bushing, has increased axial size, makes the volume of trunk piston set big like this, also makes Heavy Weight, the cost height of trunk piston set simultaneously.
3, because for dividing body structure, this oiling valve and outlet valve are installed on the plunger bushing by the fuel tap body, and fuel tap body and plunger bushing have certain clearance when installing, and leakage is caused in the gap easily, makes the volumetric efficiency of trunk piston set low.
Summary of the invention
The technical problem to be solved in the present invention is that a kind of trunk piston set simple, that volume is little, in light weight, cost is low, volumetric efficiency is high of assembling is provided.
Technological scheme of the present invention is, a kind of trunk piston set with following structure is provided, and comprises plunger, is provided with plunger bushing, oiling valve and the outlet valve of oil pocket; Described oiling valve is located at the opening of the oil pocket of plunger bushing, and described plunger bushing is provided with the radial direction through hole that is communicated with oil pocket, and described outlet valve is located in the described through hole.
After adopting above structure, the present invention compared with prior art has the following advantages:
1, because oiling valve and outlet valve all are directly installed on the plunger bushing, make trunk piston set structurally realize the integrated of oiling valve, outlet valve, plunger bushing, plunger, become an independently hydraulic unit, assembling is simple.
2,, the weight saving of trunk piston set, cost are reduced because trunk piston set is integrated, and oiling valve and outlet valve all are directly installed on the plunger bushing, have reduced the fuel tap body, have directly dwindled axial size, make the volume of trunk piston set little like this.
3, because trunk piston set is integrated, oiling valve and outlet valve all are directly installed on the plunger bushing, have reduced the fuel tap body, have eliminated assemblage gap, are difficult for causing leakage, make the volumetric efficiency height of trunk piston set.
As improvement, because described outlet valve comprises first valve seat, first valve plate, first Returnning spring, first fixed cover from inside to outside successively; The described first valve seat close-fitting is in through hole, described first fixed cover and the first valve seat close-fitting, the inner chamber of described first Returnning spring, one end and first fixed cover offsets, the other end of described first Returnning spring and first valve plate offset, compare conventional steel ball sealing, the sealing or away from unlatching of offseting by first valve plate and first valve seat makes like this that trunk piston set is simple in structure, the bodily form is little, volumetric efficiency is high, compact structure.
As improvement, also be provided with first seal ring between described first fixed cover and the plunger bushing, increase the sealing of outlet valve, prevent to reveal.
As improvement, described oiling valve comprises second valve seat, second valve plate, second Returnning spring, second fixed cover from outside to inside successively; The described second valve seat close-fitting is in the opening of the oil pocket of plunger bushing, described second fixed cover and the second valve seat close-fitting, the inner chamber of described second Returnning spring, one end and second fixed cover offsets, the other end of described second Returnning spring and second valve plate offset, compare conventional steel ball sealing, the sealing or away from unlatching of offseting by second valve plate and second valve seat makes like this that trunk piston set is simple in structure, the bodily form is little, volumetric efficiency is high, compact structure.
As improvement, the position that is installed into fuel tap of described plunger bushing also is provided with oil cleaner screen, and described oil cleaner screen is fixed on the plunger bushing by oil screen cover, and the fluid that enters oiling valve is filtered, and effectively stops impurity.
Description of drawings
Accompanying drawing is the structural representation of plunger bushing of the present invention.
As shown in the figure: 1, plunger, 2, plunger bushing, 2.1, oil pocket, 2.2, through hole, 3, oiling valve, 3.1, second valve seat, 3.2, second valve plate, 3.3, second Returnning spring, 3.4, second fixed cover, 4, outlet valve, 4.1, first valve seat, 4.2, first valve plate, 4.3, first Returnning spring, 4.4, first fixed cover, 4.5, first seal ring, 5, oil cleaner screen, 6, oil screen cover.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
As shown in the figure, trunk piston set of the present invention comprises plunger 1, is provided with plunger bushing 2, oiling valve 3 and the outlet valve 4 of oil pocket 2.1; Described oiling valve 3 is located at the opening of the oil pocket 2.1 of plunger bushing 2, and described plunger bushing 2 is provided with the radial direction through hole 2.2 that is communicated with oil pocket 2.1, and described outlet valve 4 is located in the described through hole 2.2.
Described outlet valve 4 comprises first valve seat 4.1, first valve plate 4.2, first Returnning spring 4.3, first fixed cover 4.4 from inside to outside successively; Described first valve seat, 4.1 close-fittings are in through hole 2.2, described through hole 2.2 is multistage step hole, described first valve seat 4.1, first fixed cover 4.4 all by close-fitting on through hole 2.2 steps of correspondence, described first fixed cover 4.4 simultaneously also with first valve seat, 4.1 close-fittings, the inner chamber of described first Returnning spring, 4.3 1 ends and first fixed cover 4.4 offsets, and the other end of described first Returnning spring 4.3 and first valve plate 4.2 offset.During work, first valve plate 4.2 is backed down and fuel-displaced by the oil pressure in the oil pocket 2.1 of plunger bushing 2, and promptly first valve plate 4.2 separates and blow-by with first valve seat 4.1; Then reset under the effect of first Returnning spring 4.3, promptly first valve plate 4.2 pastes mutually and seals with first valve seat 4.1.
Also be provided with first seal ring 4.5 between described first fixed cover 4.4 and the plunger bushing 2.
Described oiling valve 3 comprises second valve seat 3.1, second valve plate 3.2, second Returnning spring 3.3, second fixed cover 3.4 from outside to inside successively; Described second valve seat 3.1 is by riveting close-fitting in the opening of the oil pocket 2.1 of plunger bushing 2, described second fixed cover 3.4 and second valve seat, 3.1 close-fittings, described second inner chamber that resets 3.3 springs, one end and second fixed cover 3.4 offsets, the other end of described second Returnning spring 3.3 and second valve plate 3.2 offset, its working principle is identical with outlet valve, so repeat no more.
The position that is installed into fuel tap 3 of described plunger bushing 2 also is provided with oil cleaner screen 5, and described oil cleaner screen 5 is fixed on the plunger bushing 2 by oil screen cover 6, and described oil screen cover 6 is fixed on the end face of plunger bushing 2 by four rivets.
Below only use preferable example and made explanation, but can not be interpreted as it is restriction claim with regard to the present invention.The structure of the technology of the present invention can have other variations, is not limited to said structure, and described oiling valve and outlet valve can also adopt steel ball sealing or unlatching.In a word, all various variations of being done in the protection domain of independent claims of the present invention are all in protection scope of the present invention.
Claims (5)
1. trunk piston set comprises plunger (1), is provided with plunger bushing (2), oiling valve (3) and the outlet valve (4) of oil pocket (2.1); It is characterized in that: described oiling valve (3) is located at the opening of the oil pocket (2.1) of plunger bushing (2), and described plunger bushing (2) is provided with the radial direction through hole (2.2) that is communicated with oil pocket (2.1), and described outlet valve (4) is located in the described through hole (2.2).
2. trunk piston set according to claim 1 is characterized in that: described outlet valve (4) comprises first valve seat (4.1), first valve plate (4.2), first Returnning spring (4.3), first fixed cover (4.4) from inside to outside successively; Described first valve seat (4.1) close-fitting is in through hole (2.2), described first fixed cover (4.4) and first valve seat (4.1) close-fitting, the inner chamber of described first Returnning spring (4.3) one ends and first fixed cover (4.4) offsets, and the other end of described first Returnning spring (4.3) and first valve plate (4.2) offset.
3. trunk piston set according to claim 2 is characterized in that: also be provided with first seal ring (4.5) between described first fixed cover (4.4) and the plunger bushing (2).
4. trunk piston set according to claim 1 is characterized in that: described oiling valve (3) comprises second valve seat (3.1), second valve plate (3.2), second Returnning spring (3.3), second fixed cover (3.4) from outside to inside successively; Described second valve seat (3.1) close-fitting is in the opening of the oil pocket (2.1) of plunger bushing (2), described second fixed cover (3.4) and second valve seat (3.1) close-fitting, described second inner chamber that resets (3.3) spring one end and second fixed cover (3.4) offsets, and the other end of described second Returnning spring (3.3) and second valve plate (3.2) offset.
5. trunk piston set according to claim 1 is characterized in that: the position that is installed into fuel tap (3) of described plunger bushing (2) also is provided with oil cleaner screen (5), and described oil cleaner screen (5) is fixed on the plunger bushing (2) by oil screen cover (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101228661A CN101769249B (en) | 2010-03-08 | 2010-03-08 | Plunger piston pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101228661A CN101769249B (en) | 2010-03-08 | 2010-03-08 | Plunger piston pair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101769249A true CN101769249A (en) | 2010-07-07 |
| CN101769249B CN101769249B (en) | 2011-11-09 |
Family
ID=42502302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101228661A Expired - Fee Related CN101769249B (en) | 2010-03-08 | 2010-03-08 | Plunger piston pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101769249B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5879137A (en) * | 1997-01-22 | 1999-03-09 | Jetec Corporation | Method and apparatus for pressurizing fluids |
| CN2487890Y (en) * | 2001-08-03 | 2002-04-24 | 上海天美科学仪器有限公司 | Floating plunger structure for plunger pump |
| CN1538065A (en) * | 2003-04-18 | 2004-10-20 | 李载敏 | Tubular pump with lining cover made by composite |
| CN2775346Y (en) * | 2005-04-13 | 2006-04-26 | 尹凯 | Plunger pump combined valve |
| CN201232624Y (en) * | 2008-07-30 | 2009-05-06 | 国营第三八八厂 | Step type deep-extraction oil pump |
| CN201621061U (en) * | 2010-03-08 | 2010-11-03 | 周重威 | Plunger pair |
-
2010
- 2010-03-08 CN CN2010101228661A patent/CN101769249B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5879137A (en) * | 1997-01-22 | 1999-03-09 | Jetec Corporation | Method and apparatus for pressurizing fluids |
| CN2487890Y (en) * | 2001-08-03 | 2002-04-24 | 上海天美科学仪器有限公司 | Floating plunger structure for plunger pump |
| CN1538065A (en) * | 2003-04-18 | 2004-10-20 | 李载敏 | Tubular pump with lining cover made by composite |
| CN2775346Y (en) * | 2005-04-13 | 2006-04-26 | 尹凯 | Plunger pump combined valve |
| CN201232624Y (en) * | 2008-07-30 | 2009-05-06 | 国营第三八八厂 | Step type deep-extraction oil pump |
| CN201621061U (en) * | 2010-03-08 | 2010-11-03 | 周重威 | Plunger pair |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101769249B (en) | 2011-11-09 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: NINGBO SAIVS MACHINERY CO., LTD. Free format text: FORMER OWNER: ZHOU ZHONGWEI Effective date: 20110603 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 315135 NINGBO SAIVS MACHINERY CO., LTD., HEHUAQIAO VILLAGE, YUNLONG TOWN, YINZHOU DISTRICT, NINGBO CITY, ZHEJIANG PROVINCE TO: 315135 JIACUN INDUSTRIAL ZONE, YUNLONG TOWN, YINZHOU DISTRICT, NINGBO CITY, ZHEJIANG PROVINCE |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20110603 Address after: 315135, Zhejiang Province, Ningbo province Yinzhou District Yunlong Village Industrial Zone Applicant after: Ningbo Saivs Machinery Co., Ltd. Address before: 315135, Zhejiang, Ningbo province Yinzhou District Yunlong Town Lotus Bridge Village:Ningbo Saivs Machinery Co., Ltd. Applicant before: Zhou Zhongwei |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20150308 |
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| EXPY | Termination of patent right or utility model |