CN208502929U - Vane pump and corresponding high pressure fuel pump and diesel engine - Google Patents

Vane pump and corresponding high pressure fuel pump and diesel engine Download PDF

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Publication number
CN208502929U
CN208502929U CN201821100846.2U CN201821100846U CN208502929U CN 208502929 U CN208502929 U CN 208502929U CN 201821100846 U CN201821100846 U CN 201821100846U CN 208502929 U CN208502929 U CN 208502929U
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China
Prior art keywords
blade
guide
cover
vane pump
stator
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CN201821100846.2U
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Chinese (zh)
Inventor
朱荣
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Robert Bosch GmbH
Robert Bosch Co Ltd
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Robert Bosch GmbH
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Priority to CN201821100846.2U priority Critical patent/CN208502929U/en
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Abstract

The utility model discloses a kind of vane pump (1), comprising: the stator with inner cavity;It is eccentrically mounted in the interior intracavitary rotor (5) of the stator;And radially movable ground and multiple blades (52) for being mounted on being spaced from each other on the rotor (5);Wherein, it is equipped in the blade (52) and between the static structures of the blade (52) and is suitable for making the guide structure that controllably changes of radial position of the outer end (53) of blade (52).Also disclose a kind of corresponding high pressure fuel pump and a kind of corresponding diesel engine.According to the utility model, the blade of vane pump can controllably stretch out under the low speed.

Description

Vane pump and corresponding high pressure fuel pump and diesel engine
Technical field
The utility model relates to a kind of vane pump, a kind of corresponding high pressure fuel pump and a kind of corresponding diesel engines Machine.
Background technique
Vane pump is widely used in various equipment, the flow of pressurized for certain pressure and flow needed for providing to equipment Body, such as fuel oil.Traditional vane pump includes stator and prejudicially accommodates rotor in the stator.It is radially formed in the rotor Multiple blade grooves, blade reciprocally can be stretched out and be retracted in respective blade groove.As rotor is driven to rotate, each blade The inner peripheral surface sliding contact of outer end and stator.In this way, by the inner peripheral surface of stator, the peripheral surface of rotor and adjacent blades it Between each blade cavity experience volume variation for surrounding, and the leaf that is stretched out from the peripheral surface of rotor of fuel oil sucked from entrance Then piece pressurization passes through outlet discharge.
In order to stretch out blade from blade groove, currently used measure is mainly including the use of radially Direction acts on the spring force, centrifugal force or high pressure liquid pressure of blade.However, not only making using spring force Structure is complicated for pump, and spring is prone to wear, and is needed replacing, therefore will increase the manufacture and later maintenance cost of pump.It is adopting In the case where with centrifugal force, since the size of centrifugal force depends on the revolving speed of rotor, it is difficult to realize when pumping low-speed running Blade quickly stretches out.And using high pressure liquid pressure, it needs specially to supply high-pressure fluid to blade inner end, this also can Lead to the increased costs of pump, while being also difficult to efficiently realize that blade quickly stretches out.
Therefore, there is an urgent need to improve to vane pump, the quick stretching for efficiently realizing blade is allowed it to, especially It is in vane pump low-speed running.
Utility model content
The purpose of the utility model is to provide a kind of improved vane pump, a kind of corresponding high pressure fuel pump and a kind of phases The diesel engine answered.
First aspect according to the present utility model provides a kind of vane pump, comprising: the stator with inner cavity;It is eccentric Ground is mounted on the interior intracavitary rotor of the stator;And it is radially movable ground and be mounted on the rotor with being spaced from each other Multiple blades;It is being equipped in the blade and between the static structures of the blade outer end for being suitable for making blade The guide structure that controllably changes of radial position.
An alternative embodiment according to the present utility model, during the work time, the outer end of the blade is by means of described Inner peripheral surface of the guide structure always with the stator is kept in contact.
An alternative embodiment according to the present utility model, the vane pump further include be separately mounted to the stator two The first end cover and second end cover of side, the guide structure is arranged between the blade and first end cover and/or the blade Between second end cover.
An alternative embodiment according to the present utility model, the guide structure include being arranged in the blade and first end The first guide protrusion on one in lid and be arranged in the blade and first end cover another on described first First guide recess of guide protrusion adaptation;And/or the guide structure includes being arranged in the blade and second end cover The second guide protrusion on one and be arranged in the blade and second end cover another on it is prominent with second guidance Play the second guide recess of adaptation.
An alternative embodiment according to the present utility model, first guide protrusion are arranged on blade, and described first Guide recess is configured to form the annular guide recess in the side towards blade of first end cover;And/or described second draw It leads protrusion to be arranged on blade, second guide recess is configured to form the ring in the side towards blade of second end cover Shape guide recess.
An alternative embodiment according to the present utility model, first guide protrusion are integrally formed with the blade; And/or second guide protrusion is integrally formed with the blade.
An alternative embodiment according to the present utility model, the guide structure be arranged in the outer end of the blade with it is described Between the inner circumferential of stator.
An alternative embodiment according to the present utility model, the guide structure include be arranged at the outer end of blade One occlusion structure and the second occlusion structure being engaged with the first occlusion structure being arranged at the inner circumferential of the stator.
The second aspect according to the present utility model, provides a kind of high pressure fuel pump, and the high pressure fuel pump includes institute State vane pump.
In terms of third according to the present utility model, a kind of diesel engine is provided, the diesel engine includes institute State high pressure fuel pump.
According to the utility model, the blade of vane pump can controllably stretch out under the low speed.
Detailed description of the invention
In the following, the original of the utility model may be better understood by the way that the utility model is more fully described referring to attached drawing Reason, features and advantages.Attached drawing includes:
Fig. 1 shows the isometric exploded view of the vane pump of an exemplary embodiment according to the present utility model.
Fig. 2 schematically shows the configuration shapes of the guide structure of an exemplary embodiment according to the present utility model Formula.
Fig. 3 schematically shows the configuration shape of the guide structure of another exemplary embodiment according to the present utility model Formula.
Specific embodiment
In order to keep technical problem to be solved in the utility model, technical solution and beneficial technical effect clearer Understand, below with reference to attached drawing and multiple exemplary embodiments, the present invention will be further described in detail.It should manage Solution, specific embodiment described herein is only used for explaining the utility model, rather than is used to limit the protection of the utility model Range.
Fig. 1 shows the isometric exploded view of the vane pump of an exemplary embodiment according to the present utility model.At this In example, vane pump is the fuel oil pre-fed pump of high pressure fuel pump used in diesel engine.Obviously, the utility model not office It is limited to this.
As shown in Figure 1, vane pump 1 includes mainly first end cover 2, second end cover 3, to be mounted on first end cover 2 and second Housing parts 4 between end cap 3 and being located in the assembled state are crossed by first end cover 2, second end cover 3 and housing parts 4 Inner space in rotor 5.Housing parts 4 play a part of stator and have cylindrical hole, to work as 2 He of first end cover A cylindrical chamber is formed in inside when second end cover 3 is for example respectively installed to the both ends of housing parts 4 by bolt.Turn Son 5 is eccentrically mounted in the cylindrical cavity room.
Rotor 5 outer periphery be formed with multiple blade grooves 51.One is respectively equipped in each blade groove 51 can be with The blade 52 radially slided in blade groove 51.Blade 52 relevantly cooperates with corresponding blade groove 51.Blade 52 or blade groove 51 quantity is not limited to four shown in figure, can also be other any suitable quantities.
Preferably, the oil-feed tank 21 that fuel oil is for example received from fuel tank (not shown) is equipped in first end cover 2, second It is equipped in end cap 3 and for example goes out oil groove 31 to the plunger pump feed fuel oil of high pressure fuel pump.Certainly, oil-feed tank 21 and out oil groove 31 It can also be arranged in simultaneously in one of first end cover 2 and second end cover 3.
Oil-feed tank 21 is connect with oil inlet port (not shown), and oil groove 31 is connect with fuel-displaced port (not shown) out.
Oil-feed tank 21 and/or oil groove 31 is preferably generally arcuate out.
An exemplary embodiment according to the present utility model, first end cover 2 or second end cover 3 can be with housing parts 4 It is integrally formed, so as to reduce number of components, reduces assembling cost and manufacturing cost.
An exemplary embodiment according to the present utility model, first end cover 2 and/or second end cover 3 can be by plate shapes At or be configured to hull shape.
Rotor 5 is sleeved on shaft (not shown), and makes shaft by key interconnection between shaft and rotor 5 Rotor 5 can be driven to rotate.Shaft can provide rotary power by engine itself or by other power sources.
During the work time, the outer end 53 of each blade 52 needs mutually to scrape with the inner peripheral surface 41 of stator, every two The blade cavity substantially sealed is formed between a adjacent blade 52.
According to the utility model, forcibly make the outer of blade 52 by guide structure guide blades 52 during the work time End 53 is remained with the inner peripheral surface 41 of stator to be contacted.In this case, the desired locations of blade 52 are available reliable Ground guarantees.
An exemplary embodiment according to the present utility model, can first end cover 2 towards rotor 5 side, i.e. in Annular guide recess 22 is arranged in side, and the guide recess 22 receives as illustrated in fig. 2 to be arranged at the respective side of blade 52 Guide protrusion 54.By the cooperation of guide recess 22 and guide protrusion 54, the radial position of blade 52 can be limited.Guide recess 22 are constructed such that the outer end 53 of blade 52 is kept in contact with the inner peripheral surface of stator 41 always in 5 rotary course of rotor. In this case, the radial position of blade 52 depends primarily on limit of the guide recess 22 to guide protrusion 54, therefore no longer It is influenced by rotor speed etc..Moreover, this mandatory guidance effect has higher reliability.Preferably, guide protrusion 54 can be with It is integrally formed with blade 52.
Another exemplary embodiment according to the present utility model can also use opposite arrangement, i.e., in first end cover 2 Annular guide protrusion is set towards the side of rotor 5, and guide recess is set at the respective side of blade 52.This equally can be with Play guiding function.Preferably, guide protrusion is integrally formed with first end cover 2.
The radial position to blade 52 is described by taking the guide structure being arranged between blade 52 and first end cover 2 as an example above The control set.However, for those skilled in the art, the position of guide structure is not limited thereto.For example, guidance knot Structure also can be set between blade 52 and second end cover 3 or the two sides of blade 52 are respectively provided with guide structure to reinforce guiding.
Guide structure can be even arranged between the outer end 53 of blade 52 and the inner circumferential of stator.For example, such as Fig. 3 institute Show, L-type structure 55, corresponding construction L-type structure 55 and be arranged at the inner circumferential of stator are equipped at the outer end 53 of blade 52 42 cooperate and the outer end 53 of blade 52 can be made to remain with the inner circumferential of stator and contacted.
As can be seen from the above description, the basic thought of the utility model is, by blade with adjacent to the static of blade Setting guide structure makes the radial position of the outer end of blade controllably between structure, such as stator, first end cover, second end cover etc. Variation, it is preferable that remain and contact with the inner circumferential of stator, so that the blade of vane pump can be by under the low speed Control ground stretches out.The utility model is not limited to the structure type of vane pump described herein.
The utility model, which is not precluded, combines the outwardly directed measure of blade radial with other, such as still can be Spring is set between the inner end of blade and the bottom of blade groove.In this way, the outer end of blade can be made by more reliably Guidance, such as can to keep closer contact with the inner circumferential of stator.
Although the particular implementation of the utility model is described in detail here, they are used for the purpose of the purpose explained And provide, and it is not considered that they are construed as limiting the scope of the utility model.The spirit of the present invention and model are not being departed from Under the premise of enclosing, various replacements, change and transformation can be contemplated out.

Claims (10)

1. a kind of vane pump (1), comprising:
Stator with inner cavity;
It is eccentrically mounted in the interior intracavitary rotor (5) of the stator;And
Radially movable ground and the multiple blades (52) being mounted on being spaced from each other on the rotor (5);
It is characterized in that,
It is equipped in the blade (52) and between the static structures of the blade (52) outer end for being suitable for making blade (52) (53) guide structure that radial position controllably changes.
2. vane pump (1) as described in claim 1, which is characterized in that
During the work time, the outer end (53) of the blade (52) is by means of the guide structure inner circumferential with the stator always Surface is kept in contact.
3. vane pump (1) as claimed in claim 1 or 2, which is characterized in that
The vane pump (1) further includes the first end cover (2) and second end cover (3) for being separately mounted to the two sides of the stator, institute State guide structure be arranged between the blade (52) and first end cover (2) and/or the blade (52) and second end cover (3) it Between.
4. vane pump (1) as claimed in claim 3, which is characterized in that
The guide structure include the first guide protrusion for being arranged on one in the blade (52) and first end cover (2) with The first guidance being adapted to first guide protrusion on another in the blade (52) and first end cover (2) is set Groove;And/or
The guide structure include the second guide protrusion for being arranged on one in the blade (52) and second end cover (3) with The second guidance being adapted to second guide protrusion on another in the blade (52) and second end cover (3) is set Groove.
5. vane pump (1) as claimed in claim 4, which is characterized in that
First guide protrusion is arranged on blade (52), and first guide recess is configured to form in first end cover (2) the annular guide recess (22) of the side towards blade (52);And/or
Second guide protrusion is arranged on blade (52), and second guide recess is configured to form in second end cover (3) the annular guide recess of the side towards blade (52).
6. vane pump (1) as claimed in claim 5, which is characterized in that
First guide protrusion is integrally formed with the blade (52);And/or
Second guide protrusion is integrally formed with the blade (52).
7. vane pump (1) as claimed in claim 1 or 2, which is characterized in that
The guide structure is arranged between the outer end (53) of the blade (52) and the inner circumferential of the stator.
8. vane pump (1) as claimed in claim 7, which is characterized in that
The guide structure includes the first occlusion structure being arranged at the outer end (53) of blade (52) and is arranged in the stator Inner circumferential at the second occlusion structure being engaged with the first occlusion structure.
9. a kind of high pressure fuel pump, which is characterized in that the high pressure fuel pump includes such as leaf described in any one of claims 1-8 Piece pumps (1).
10. a kind of diesel engine, which is characterized in that the diesel engine includes high pressure fuel as claimed in claim 9 Pump.
CN201821100846.2U 2018-07-12 2018-07-12 Vane pump and corresponding high pressure fuel pump and diesel engine Active CN208502929U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821100846.2U CN208502929U (en) 2018-07-12 2018-07-12 Vane pump and corresponding high pressure fuel pump and diesel engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821100846.2U CN208502929U (en) 2018-07-12 2018-07-12 Vane pump and corresponding high pressure fuel pump and diesel engine

Publications (1)

Publication Number Publication Date
CN208502929U true CN208502929U (en) 2019-02-15

Family

ID=65284156

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821100846.2U Active CN208502929U (en) 2018-07-12 2018-07-12 Vane pump and corresponding high pressure fuel pump and diesel engine

Country Status (1)

Country Link
CN (1) CN208502929U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110985254A (en) * 2019-12-30 2020-04-10 江苏湖润泵业科技有限公司 High-speed common rail vane pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110985254A (en) * 2019-12-30 2020-04-10 江苏湖润泵业科技有限公司 High-speed common rail vane pump
CN110985254B (en) * 2019-12-30 2021-08-13 江苏湖润泵业科技有限公司 High-speed common rail vane pump

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