CN204239229U - For hydrovalve and the corresponding plunger pump of plunger pump - Google Patents
For hydrovalve and the corresponding plunger pump of plunger pump Download PDFInfo
- Publication number
- CN204239229U CN204239229U CN201420642980.0U CN201420642980U CN204239229U CN 204239229 U CN204239229 U CN 204239229U CN 201420642980 U CN201420642980 U CN 201420642980U CN 204239229 U CN204239229 U CN 204239229U
- Authority
- CN
- China
- Prior art keywords
- spring
- hydrovalve
- spring seat
- fuel
- plunger pump
- 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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Links
- 238000010276 construction Methods 0.000 claims abstract description 7
- 230000006835 compression Effects 0.000 claims abstract description 5
- 238000007906 compression Methods 0.000 claims abstract description 5
- 230000007704 transition Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000007790 scraping Methods 0.000 abstract description 3
- 239000000295 fuel oil Substances 0.000 description 10
- 239000000446 fuel Substances 0.000 description 8
- 239000003921 oil Substances 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1002—Ball valves
- F04B53/1007—Ball valves having means for guiding the closure member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1002—Ball valves
Abstract
The utility model discloses a kind of hydrovalve for plunger pump, comprising: spool, with the valve seat of spool cooperating, be suitable for the spring promoted towards valve seat by spool and the spring seat being suitable for keep-spring.According to the utility model, described spring seat comprises: the clamping structure that spring seat is clamped in corresponding construction by the mounting structure at least partially and being suitable for being suitable for mounting spring.The invention also discloses a kind of plunger pump comprising above-mentioned hydrovalve.Spring seat in hydrovalve of the present utility model can be clamped in corresponding construction, thus can avoid producing scraping between spring seat and corresponding construction, and then plunger pump can be prevented therefore to lose efficacy.In addition, when described spring seat there is spring-reception chamber and for oiling valve time, can reliably guide springs compression and stretching, and allow fuel-displaced valve body with less size and lower cost manufacture.
Description
Technical field
The utility model relates to a kind of hydrovalve for plunger pump and a kind of plunger pump comprising this hydrovalve.
Background technique
At present, the fuel system of vehicle motor extensively adopts Common-rail technology.Common-rail technology refers in the closed-loop system be made up of high pressure oil pump, pressure transducer and electronic control unit (ECU), by the generation of jet pressure and course of injection a kind of fuel system completely separate from each other.By high pressure oil pump, high pressure fuel is transported to common feeder line, by realizing the oil pressure in common feeder line accurately controlling, the rotating speed of high pressure pipe pressure size and motor is had nothing to do, significantly can reduce engine oil pressure to change with the change of engine speed, thus, overcome the defect of conventional engines fuel pressure change.
High-pressure service pump is used for fuel oil to be transported to common rail after low pressure is pressurized to high pressure.Current high-pressure service pump extensively adopts the mode of plunger pump.Plunger pump relies on plunger to-and-fro motion in cylinder body, makes the volume of pressurization working lumen change to realize oil suction, force feed.Plunger pump has that rated pressure is high, compact structure, efficiency are high and the advantage such as Flow-rate adjustment is convenient.
Fig. 1 shows the sectional view of a part for the plunger pump of prior art.As shown in Figure 1, the plunger 2 that this plunger pump comprises plunger bushing 1 and is slidably mounted in plunger bushing 1, wherein, oil-feed valve body 3, oil-feed spool 4, fuel-displaced valve body 5, fuel-displaced spool 6 and valve retainer 7 are one after the other arranged in plunger bushing 1.Oil-feed valve body 3 and oil-feed spool 4 form oiling valve structure, and fuel-displaced valve body 5 and fuel-displaced spool 6 form delivery valve structure.Plunger 2 is such as driven by cam mechanism, makes to-and-fro motion in plunger bushing 1, to be sucked by fuel oil and to pressurize to it, is then injected in common rail by high pressure fuel via delivery valve structure and valve retainer 6.
When fuel oil is inhaled into, oiling valve structure must be opened.When fuel oil is pressurized, oiling valve structure must be closed.For this reason, as shown in Figure 1, the spring seat 9 of bearing spring 8 is arranged in fuel-displaced valve body 5.Spring 8 applies the thrust of constant to oil-feed spool 4, to be closely squeezed on oil-feed valve body 3 by oil-feed spool 4.When switching continuously in the operating process of above-mentioned two situations at plunger pump, spring 8 compresses repeatedly and stretches.
Usually, spring seat 9 is non-is securely placed in fuel-displaced valve body 5.In other words, gap may be there is between spring seat 9 and fuel-displaced valve body 5.When compress at the operating process medi-spring 8 of plunger pump and stretch and fuel oil by spring seat 9 time, spring seat 9 can move radially in fuel-displaced valve body 5, even also can move axially.In this case, the spring seat 9 that fuel-displaced valve body 5 may be moved is swiped.Because pump operates with high pressure conditions, fuel-displaced valve body 5 and spring seat 9 may be damaged because of this scraping, and even can produce crack, this may cause the ultimate failure of plunger pump.
And because spring seat 9 can move in fuel-displaced valve body 5, spring 8 may be guided astatically, and this also may have a negative impact to the reliable operation of oil-feed spool 4.
Therefore, in the urgent need to provide a kind of can avoid damaging fuel-displaced valve body and spring seat simultaneously again can the hydrovalve of guide springs and the corresponding plunger pump of one better.
Model utility content
The purpose of this utility model is to provide and can grips and the hydrovalve of the spring seat of reliably guide springs compression and stretching, extension and a kind of corresponding plunger pump a kind of comprising.
For this reason, according to first aspect of the present utility model, provide a kind of hydrovalve for plunger pump, comprising: spool; With the valve seat of spool cooperating; Be suitable for the spring promoted towards valve seat by spool; And be suitable for the spring seat of keep-spring; It is characterized in that, described spring seat comprises: the mounting structure being at least partially suitable for mounting spring; And be suitable for the clamping structure that is clamped to by spring seat in corresponding construction.
According to preferred implementation of the present utility model, described mounting structure is configured to be suitable for embedding spring-loaded spring-reception chamber at least partially, and described spring is suitable for compression and stretching, extension in described spring-reception chamber; And/or described spring seat becomes tubbiness.
According to preferred implementation of the present utility model, described plunger pump comprises plunger bushing and the oil-feed spool that is mounted adjacent one another in plunger bushing and fuel-displaced valve body, is provided with the cavity for installing described spring seat in described fuel-displaced valve body; With described spring seat, there is first end and the second end contrary with described first end, described first end is provided with through hole, described through hole is communicated with the oil outlet be formed in described fuel-displaced valve body in the assembled condition, and described the second end is uncovered and be suitable for receiving spring.
According to preferred implementation of the present utility model, described clamping structure comprises the multiple clamping parts separated from one another extended from described first end to the second end, described clamping part crosses described spring-reception chamber, and is configured on the corresponding site that is suitable for being squeezed in described cavity in the assembled condition; And/or described through hole is circular.
According to preferred implementation of the present utility model, described multiple clamping part is arranged equably around described spring-reception chamber; And/or described through hole aligns with described oil outlet in the assembled condition.
According to preferred implementation of the present utility model, described spring seat becomes barrel-shaped, and the external frame of described clamping part has arcuate shape; And/or described through hole has identical shape of cross section with described oil outlet.
According to preferred implementation of the present utility model, described multiple clamping part is mutually the same; And/or described through hole is medially arranged in described first end.
According to preferred implementation of the present utility model, smooth transition between described first end and described clamping structure.
According to preferred implementation of the present utility model, the outer surface of described clamping structure comprises projection; And/or described hydrovalve is one-way valve.
According to second aspect of the present utility model, provide a kind of plunger pump, it is characterized in that, described plunger pump comprises above-mentioned hydrovalve.
Spring seat in hydrovalve of the present utility model can be clamped in corresponding construction, thus can avoid producing scraping between spring seat and corresponding construction, and then plunger pump can be prevented therefore to lose efficacy.In addition, when described spring seat there is spring-reception chamber and for oiling valve time, can reliably guide springs compression and stretching, and allow fuel-displaced valve body with less size and lower cost manufacture.
Accompanying drawing explanation
Below, by describing the utility model in more detail referring to accompanying drawing, principle of the present utility model, feature and advantage can be understood better.Accompanying drawing comprises:
Fig. 1 shows the sectional view of a part for the plunger pump of prior art.
Fig. 2 shows the sectional view of a part for the plunger pump according to an exemplary embodiment of the present utility model.
Fig. 3 and 4 shows the perspective view along different amount of the spring seat according to an exemplary embodiment of the present utility model.
Fig. 5 shows the perspective view of the spring seat that the plunger pump in Fig. 1 uses.
Embodiment
Below, referring to accompanying drawing, embodiments more of the present utility model will be described in more detail, to understand basic thought of the present utility model better.
Fig. 2 shows the sectional view of a part for the plunger pump according to an exemplary embodiment of the present utility model.
As shown in Figure 2, the plunger bushing 11 that this plunger pump comprises hollow and the plunger 12 be slidably mounted in plunger bushing 11, be also in succession provided with oil-feed valve body 13, oil-feed spool 14, fuel-displaced valve body 15, fuel-displaced spool 16 and valve retainer 17 in plunger bushing 11.Oil-feed valve body 13 and oil-feed spool 14 form oiling valve structure, and oil-feed spool 14 is preferably spherical at this.Fuel-displaced valve body 15 and fuel-displaced spool 16 form delivery valve structure, and fuel-displaced spool 16 is also preferably spherical at this.Obviously, for a person skilled in the art, valve arrangement form is not limited thereto.
As shown in Figure 2, in fuel-displaced valve body 15, be provided with the cavity 20 at least partially for holding spring 18, spring seat 19 and oil-feed spool 14.Spring 18 to be arranged on spring seat 19 and to be squeezed on oil-feed spool 14.Also be provided with the hole 21 be communicated with cavity 20 in fuel-displaced valve body 15, fuel-displaced spool 16 is led in this hole 21.
In addition, as shown in Figure 2, in oil-feed valve body 13, be provided with at least one passage 22 and coordinate the recess 23 serving as valve seat with oil-feed spool 14.Described passage 22 runs through oil-feed valve body 13, and cavity 20 is led in one end, and the other end leads to the active chamber 24 of plunger 12.At least one oil-feed eyelet 25 for feed low-voltage fuel is provided with in described recess 23.
When plunger pump works, plunger 12 is such as by cam mechanism to-and-fro motion in active chamber 24 by driving.When plunger 12 moves downward, fuel-displaced spool 16 is squeezed on fuel-displaced valve body 15 under the effect of such as another spring, the volume enlargement of active chamber 24 simultaneously, thus, negative pressure is formed in the cavity 20 of fuel-displaced valve body 15, oil-feed spool 14 is pushed in the effect now overcoming spring 18 under the effect of the low-pressure fuel entered by oil-feed eyelet 25 open, thus fuel oil enters active chamber 24 via cavity 20 and passage 22.When plunger 12 moves upward, oil-feed spool 14 is squeezed under the effect of spring 18 on recess 23, and the volume of active chamber 24 will reduce, thus to being arranged in the fuel oil pressurization in active chamber 24, passage 22, cavity 20 and hole 21.When fuel oil is pressurized under a certain predetermined pressure, fuel-displaced spool 16 will be promoted away from fuel-displaced valve body 15.Final pressurization fuel oil will be transported in common rail by valve retainer 17.Plunger pump is periodic duty according to this.
As can be seen here, spring 18 can compress repeatedly and stretch in the course of the work, and fuel oil can produce active force by spring 18 and spring seat 19 to them.Therefore, in the cavity 20 needing spring seat 19 is firmly remained in fuel-displaced valve body 15, and need stably guide springs 18 to guarantee that oil-feed spool 14 reliably operates.
For this reason, the utility model proposes a kind of novel spring seat.Fig. 3 and 4 shows the perspective view of the different amount of an exemplary embodiment of this spring seat.
As shown in Figure 3, this spring seat 19 one-tenth roughly tubbiness.Specifically, this spring seat 19 has first end 31 and the second end 32 contrary with first end 31, and first end 31 is provided with through hole 33 and roughly circlewise, the second end 32 is completely unlimited.Axially multiple fin 34 is extended with from the periphery of first end 31 to the second end 32.Be spaced apart from each other between these fins 34, and preferably circumferentially arrange equably, thus cross the spring-reception chamber 35 for receiving spring 18.
The size of through hole 33 preferably matches with the hole 21 in fuel-displaced valve body 15, to make high pressure fuel carry to common rail swimmingly.And the shape of through hole 33 is preferably circular, and is preferably medially arranged in first end 31.
According to a preferred exemplary embodiment, spring seat 19 is barrel-shaped.Thus the external frame of first end 31 and the second end 32 is circle, fin 34 is along the circumferential direction arranged.In this case, fin 34 is constructed to circular arc.
The thickness of fin 34 is selected to and is suitable for making fin 34 radially inward direction generation resiliently deformable to a certain degree.
The quantity of the fin 34 shown in Fig. 3 and 4 is four, but it will be obvious to those skilled in the art that and be not limited thereto.
In installment state, as shown in Figure 2, spring seat 19 is securely arranged in the cavity 20 of fuel-displaced valve body 15, and first end 31 is located towards fuel-displaced spool 16 and through hole 33 and the hole 21 in fuel-displaced valve body 15 are aligned, and the second end 32 is located towards oil-feed spool 14.Being contained at least partially in spring-reception chamber 35 of spring 18, and be squeezed on oil-feed spool 14 towards one end of oil-feed spool 14.On multiple each other corresponding sites that the circumferential upper fins 34 be separated make these fins 34 can be squeezed in by certain elastomeric radial in the cavity 20 of fuel-displaced valve body 15 of spring seat 19, thus can guarantee that spring seat 19 is firmly arranged in the cavity 20 of fuel-displaced valve body 15.
According to a preferred exemplary embodiment, smooth transition between the periphery of the first end 31 of spring seat 19 and fin 34, to be conducive to installing and manufacturing.The size of the through hole 33 in first end 31 is less than the diameter of spring 18, makes spring 18 can abut against the inner side of first end 31.
In order to strengthen clamping action, the outer surface of fin 34 can arrange projection.Fin 34 is preferably mutually the same, to realize balanced clamping.
Certainly, the concrete shape of spring seat 19 also will adapt to the structure characteristic of the corresponding site of the cavity 20 in fuel-displaced valve body 15.Basic thought of the present utility model is, spring is inlaid in the spring-reception chamber of spring seat, and make the periphery of spring seat be suitable in the assembled condition at least partially produce squeezing action with the corresponding site of the cavity in fuel-displaced valve body.Obviously, as long as any mode of execution that can realize such technological scheme is all fine.
In order to be illustrated more clearly in advantage of the present utility model, by with the spring seat in Fig. 1, spring seat of the present utility model is described as a comparison below.The perspective view of the spring seat that the plunger pump of the prior art that Fig. 5 shows in Fig. 1 uses.
As shown in Figure 5, the spring seat of prior art comprises head 41 and bar portion 42, and head 41 is assemblied in the cavity of fuel-displaced valve body usually loosely, and spring housing is contained in this bar portion 42.
Comparatively speaking, fin of the present utility model can make spring seat be assemblied in fuel-displaced valve body with compressive state.In other words, spring seat of the present utility model can firmly be arranged in fuel-displaced valve body, makes can not produce relative movement between spring seat and fuel-displaced valve body in the operating process of plunger pump.In this way, can avoid producing between spring seat and fuel-displaced valve body swiping, thus prevent plunger pump therefore to lose efficacy.
On the other hand, in spring seat of the present utility model, spring is not suit but is inlaid on spring seat.In this way, spring can by more stable guiding, and this is conducive to the reliable operation of oil-feed spool.
And, can be found by contrast, the axial dimension of spring seat of the present utility model is reduced relative to the spring seat of prior art, the distance therefore between the top and fuel-displaced spool of spring seat remains unchanged, can reduce total axial height of fuel-displaced valve body.In other words, according to the utility model, fuel-displaced valve body can be done less.Therefore, plunger pump can with lower cost manufacture.
It will be obvious to those skilled in the art that this spring seat also can be used in the outlet valve of other hydrovalves, such as plunger pump.
Although describe particular implementation of the present utility model here in detail, the object that they are only used to explain provides, and should not think that they are construed as limiting scope of the present utility model.Under the prerequisite not departing from the utility model spirit and scope, various replacement, change and transformation can be conceived out.
Claims (10)
1., for a hydrovalve for plunger pump, comprising:
Spool;
With the valve seat of spool cooperating;
Be suitable for the spring promoted towards valve seat by spool; And
Be suitable for the spring seat of keep-spring;
It is characterized in that, described spring seat comprises:
Be suitable for the mounting structure at least partially of mounting spring; And
Be suitable for the clamping structure be clamped to by spring seat in corresponding construction.
2. hydrovalve as claimed in claim 1, is characterized in that,
Described mounting structure is configured to be suitable for embedding spring-loaded spring-reception chamber at least partially, and described spring is suitable for compression and stretching, extension in described spring-reception chamber; And/or
Described spring seat becomes tubbiness.
3. hydrovalve as claimed in claim 2, is characterized in that,
Described plunger pump comprises plunger bushing and the oil-feed spool that is mounted adjacent one another in plunger bushing and fuel-displaced valve body, is provided with the cavity for installing described spring seat in described fuel-displaced valve body; With
Described spring seat has first end and the second end contrary with described first end, described first end is provided with through hole, described through hole is communicated with the oil outlet be formed in described fuel-displaced valve body in the assembled condition, and described the second end is uncovered and be suitable for receiving spring.
4. hydrovalve as claimed in claim 3, is characterized in that,
Described clamping structure comprises the multiple clamping parts separated from one another extended from described first end to the second end, and described clamping part crosses described spring-reception chamber, and is configured on the corresponding site that is suitable for being squeezed in described cavity in the assembled condition; And/or
Described through hole is circular.
5. hydrovalve as claimed in claim 4, is characterized in that,
Described multiple clamping part is arranged equably around described spring-reception chamber; And/or
Described through hole aligns with described oil outlet in the assembled condition.
6. the hydrovalve as described in claim 4 or 5, is characterized in that,
Described spring seat becomes barrel-shaped, and the external frame of described clamping part has arcuate shape; And/or
Described through hole has identical shape of cross section with described oil outlet.
7. the hydrovalve as described in claim 4 or 5, is characterized in that,
Described multiple clamping part is mutually the same; And/or
Described through hole is medially arranged in described first end.
8. hydrovalve as claimed in claim 3, is characterized in that,
Smooth transition between described first end and described clamping structure.
9., as the hydrovalve as described in arbitrary in claim 1-5,8, it is characterized in that,
The outer surface of described clamping structure comprises projection; And/or
Described hydrovalve is one-way valve.
10. a plunger pump, is characterized in that, described plunger pump comprises as the hydrovalve as described in arbitrary in claim 1-9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420642980.0U CN204239229U (en) | 2014-10-31 | 2014-10-31 | For hydrovalve and the corresponding plunger pump of plunger pump |
| DE102015218268.1A DE102015218268A1 (en) | 2014-10-31 | 2015-09-23 | Hydraulic valve for piston pump and corresponding piston pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420642980.0U CN204239229U (en) | 2014-10-31 | 2014-10-31 | For hydrovalve and the corresponding plunger pump of plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204239229U true CN204239229U (en) | 2015-04-01 |
Family
ID=52768734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420642980.0U Active CN204239229U (en) | 2014-10-31 | 2014-10-31 | For hydrovalve and the corresponding plunger pump of plunger pump |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN204239229U (en) |
| DE (1) | DE102015218268A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552827A (en) * | 2018-06-04 | 2019-12-10 | 罗伯特·博世有限公司 | Oil inlet valve for high-pressure oil pump and corresponding high-pressure oil pump |
| US11519405B2 (en) | 2021-04-21 | 2022-12-06 | Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | Valve spring seat sleeve, valve assembly and plunger pump |
-
2014
- 2014-10-31 CN CN201420642980.0U patent/CN204239229U/en active Active
-
2015
- 2015-09-23 DE DE102015218268.1A patent/DE102015218268A1/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552827A (en) * | 2018-06-04 | 2019-12-10 | 罗伯特·博世有限公司 | Oil inlet valve for high-pressure oil pump and corresponding high-pressure oil pump |
| US11519405B2 (en) | 2021-04-21 | 2022-12-06 | Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. | Valve spring seat sleeve, valve assembly and plunger pump |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102015218268A1 (en) | 2016-05-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |