CN208456941U - Liquid valve and its spool - Google Patents
Liquid valve and its spool Download PDFInfo
- Publication number
- CN208456941U CN208456941U CN201820778478.0U CN201820778478U CN208456941U CN 208456941 U CN208456941 U CN 208456941U CN 201820778478 U CN201820778478 U CN 201820778478U CN 208456941 U CN208456941 U CN 208456941U
- Authority
- CN
- China
- Prior art keywords
- spool
- main part
- guide groove
- valve
- neck
- 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
- 239000007788 liquid Substances 0.000 title claims abstract description 40
- 238000007789 sealing Methods 0.000 claims description 34
- 238000000034 method Methods 0.000 claims description 4
- 239000000295 fuel oil Substances 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 102100024329 Cytochrome P450 11B2, mitochondrial Human genes 0.000 description 1
- 101000909153 Homo sapiens Carboxypeptidase N subunit 2 Proteins 0.000 description 1
- 101000941777 Homo sapiens Copine-2 Proteins 0.000 description 1
- 101000761956 Homo sapiens Cytochrome P450 11B2, mitochondrial Proteins 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010761 intermediate fuel oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Abstract
This application discloses a kind of liquid valve and its spools, wherein, spool includes the head of coaxial setting, neck and main part, the neck is between the head and main part and its internal diameter is less than the head and main part, the outer wall of the main part offers a plurality of guide grooves, the first end of each guide groove leads to the intersection of the main part and neck, second end leads to the bottom surface of the main part, there are non-perpendicular angles for the bottom surface intersection of the inner wall of the second end of each guide groove and the main part, and, when from the bottom surface direction perpendicular to the main part, a plurality of guide grooves are in rotational symmetry.
Description
Technical field
This application involves a kind of liquid valve and its spool more particularly to a kind of inlet valves and its valve for field of internal combustion engine
Core.
Background technique
In the field using liquid valve control high pressure fluid flow, such as field of internal combustion engine, need fuel oil under high pressure
It is supplied to the space of needs, the supply and cut-off of intermediate fuel oil are generally controlled by the opening and closing of inlet valve.
Liquid valve (for example, the inlet valve for being used for CPN2 common rail pump) for field of internal combustion engine generally includes valve seat and valve
Core, valve seat are equipped with valve opening, and spool is movably received in valve opening.When liquid valve is closed, the sealing surface of valve seat and spool
Sealing surface forms sealing, and fuel oil is prevented to flow through；When liquid valve is opened, spool is elevated and makes the sealing surface and valve seat of spool
Sealing surface is separated from each other, and fuel oil is flowed out through the gap between two sealing surfaces.
With the increase of working time, the sealing surface of spool and valve seat can gradually generate some contact wears and cavitation pitting,
And then it is possible to destroy the sealing effect of liquid valve, the service life of shortening liquid valve, increase equipment failure rate.
Therefore, it is necessary to a kind of improved liquid valve and its spools, are influenced, are improved with reducing abrasion and cavitation problems bring
Sealing effect and prolong the service life.
Utility model content
The purpose of the application is to propose a kind of improved liquid valve and its spool, to reduce above problem bring shadow
It rings.
This application discloses a kind of spools for liquid valve comprising head, neck and the main part of coaxial setting, institute
Neck is stated between the head and main part and its internal diameter is less than the head and main part, the outer wall of the main part is opened
Equipped with a plurality of guide grooves, the first end of each guide groove leads to the intersection of the main part and neck, and second end leads to institute
State the bottom surface of main part, there are non-perpendicular for the bottom surface intersection of the inner wall of the second end of each guide groove and the main part
Angle, also, when from the bottom surface direction perpendicular to the main part, a plurality of guide grooves are in rotational symmetry.
In feasible embodiment, the guide groove is configured as being suitable for that liquid is guided to generate week in spool opening process
To the shape of torque.
In feasible embodiment, the cross section of the guide groove from the bottom surface of the main part towards the main part with
The narrow contracting in intersection direction of neck.
In feasible embodiment, the cross section of the guide groove from the bottom surface of the main part towards the main part with
The amplitude of the narrow contracting in intersection direction of neck is uniformly or non-uniformly.
When in feasible embodiment, from the direction perpendicular to the spool longitudinal section, a complete guide groove
With side is roughly vertical and outer contour that the other side is generally ramped.
When in feasible embodiment, from the direction perpendicular to the spool longitudinal section, a complete guide groove
The outer contour that generally ramped and the two is parallel to each other with two sides.
In feasible embodiment, the angle of the generally ramped outer contour and the spool vertical direction is 15
Between~20 degree.
In addition, the application also discloses a kind of liquid valve, comprising: foregoing spool；And the valve equipped with valve opening
Seat, the valve opening are configured so that at least part of the spool is movably received in the valve opening.
In feasible embodiment, the head configuration of the spool has primary sealing area, the top sides edge of the valve opening
It is configured with secondary sealing area, the primary sealing area and the secondary sealing area can be fitted to each other to form sealing or separate, when
When first, second sealing surface cooperatively forms sealing, the neck and main part of the spool are in the valve opening.
In feasible embodiment, the valve seat is additionally provided at least one liquid inlet, the valve opening be configured to
The liquid inlet connection.
In order to be further understood that the feature and technology contents of the application, please refer to below in connection with the detailed of the application
Illustrate and attached drawing, however, the drawings only provide reference and explanation, is not used to limit the application.
Detailed description of the invention
The aforementioned and other aspects of the application will more completely be managed and that is done with reference to the accompanying drawings is discussed in detail
Solution and understanding, in the accompanying drawings:
Fig. 1 is the schematic diagram in embodiments herein for the spool of liquid valve；
Fig. 2 be spool in Fig. 1 from the direction of bottom surface when schematic diagram.
Fig. 3 is the primary structure signal of the liquid valve and its spool for field of internal combustion engine according to an embodiment of the present application
Figure.
Specific embodiment
For help those skilled in the art definitely understand this application claims theme, with reference to the accompanying drawing in detail
The specific embodiment of the application is described.
Referring to shown in Fig. 1 and Fig. 2, a kind of spool 100 for liquid valve comprising the head 10 of coaxial setting, neck
20 and main part 30, the neck 20 is between the head 10 and main part 30 and its internal diameter is less than the head 10 and main
Body portion 30, the outer wall of the main part 30 offer a plurality of guide grooves 40, and the first end 40a of each guide groove 40 leads to described
The intersection of main part 30 and neck 20, second end 40b lead to the bottom surface 31 of the main part 30, and the cross section of the guide groove
From the bottom surface 31 of the main part 30 towards the narrow contracting in intersection direction of the main part 30 and neck 20, from perpendicular to the master
When 31 direction of the bottom surface observation in body portion 30, a plurality of guide grooves 40 are in rotational symmetry.
As shown, in this embodiment, when from the direction perpendicular to 100 longitudinal section of spool, one
A complete guide groove 40 has the outer contour 41,42 that side is roughly vertical and the other side is generally ramped.Implement as preferable
The angle α of mode, the generally ramped outer contour 42 and the spool vertical direction is between 15~20 degree.
Fig. 3 show according to an embodiment of the present application for the liquid valve of field of internal combustion engine and its main knot of spool
Structure.As shown, liquid valve generally includes valve seat 200 and spool 100, valve seat 200 is equipped with valve opening 210, and spool 100 is at least
A part is movably received in valve opening 210.In general, the inner surface of valve opening 210 is cylinder.
The primary sealing area 11 of spool 100 is a part of 10 outer surface of head, and usually inclined-plane, and valve seat 200
Secondary sealing area 211 is correspondingly the inclined-plane of 210 top edge of valve opening.Liquid valve in the closure state, the head of spool 100
Portion 10 is matched with the valve opening 210 of valve seat 200, and the neck 20 of spool 100 and main part 30 are located in valve opening 210.In addition, valve
200 at least one also settable liquid inlet 300 of seat, at least one liquid inlet 300 are connected to the lower part of valve opening 210, with
For in fuel admission valve hole 210.In addition, the quantity of the guide groove 40 opened up on spool main part 30 and position can be with valve seats 200
Liquid inlet 300 is corresponding, in order to guide fuel oil.
As a result, when liquid valve is closed, positioned at the secondary sealing area 211 on 210 top sides edge of valve opening and positioned at spool 100
The primary sealing area 11 in portion 10 forms sealing, and liquid is prevented to flow through.When liquid valve is opened, primary sealing area 11 and the second sealing
Face 211 is separated from each other, and flows through liquid between the two.
It is understood that in this application, when fuel oil entered in valve opening 210 from liquid inlet 300 and along guide groove 40 to
When upper movement is to push liquid valve to open, since the cross section of guide groove 40 is from the bottom surface 31 of the main part 30 towards the main body
The narrow contracting in the intersection direction of portion 30 and neck 20 and not as the fuel oil in the prior art straight up and down, moved upwards with lead
The contact of 40 inclined inner surface of slot can generate circumferential torque, since the quantity of guide groove 40 is multiple and rotational symmetry, at them
Collective effect under, these circumferential torques can make spool 100 occur certain rotation angle during unlatching.Thus band
The benefit come is that the cavitation pitting of contact wear and the first, second sealing surface 11,211 between spool 100 and valve seat 200 is made to exist
360 degree upper more uniform.Meanwhile it can also reduce since the impurity such as particle are stuck on the positions such as sealing surface to cause spool 100
Stuck risk.
Theoretically, the guide groove 40 can be configured as any guidance liquid that is suitable for and generate in 100 opening process of spool
The shape of circumferential torque.In view of effect and processing convenience, the quantity of guide groove 40 is advisable with 3~4, and can be processed to
Such shape: guide groove 40 by the main part 30 bottom surface towards the main body the narrow contracting in top surface direction amplitude uniformly or not
Uniformly, the surface of guide groove 40 is rounding off surface.When from the direction perpendicular to 100 longitudinal section of spool, one complete
Whole guide groove 40 has the outer contour 41,42 that side is roughly vertical and the other side is generally ramped；The generally ramped foreign steamer
The angle α of profile 42 and the spool vertical direction is between 15~20 degree.
It is understood that in other embodiments, guide groove 40 is also designed to other shapes, for example, be designed as from
Perpendicular to the spool longitudinal section direction observation when, complete guide groove has two sides generally ramped and the two is mutually put down
Shape as capable outer contour.Since the inner wall of the second end of the guide groove and the bottom surface intersection of the main part exist
Non-perpendicular angle, contact of the fuel oil moved upwards with inclined surface can equally generate circumferential torque, so that spool exists
Occurs certain rotation angle during unlatching.
According to an embodiment of the present application, it by changing the shape of guide groove, can reduce to the sealing surface of valve seat and valve opening
The abrasion of sealing surface and cavitation pitting destroy, and then extend the service life of valve, reduce care and maintenance cost.
Although having been shown and described the application based on specific embodiment, the application is not restricted to shown thin
Section.On the contrary, the various details of the application can be modified in the range of claim and its equivalent replacement.
Claims (10)
1. a kind of spool for liquid valve comprising head, neck and the main part of coaxial setting, the neck are located at described
Between head and main part and its internal diameter is less than the head and main part, and the outer wall of the main part offers a plurality of lead
The first end of slot, each guide groove leads to the intersection of the main part and neck, and second end leads to the bottom of the main part
Face, which is characterized in that there are non-perpendicular for the bottom surface intersection of the inner wall of the second end of each guide groove and the main part
Angle, also, when from the bottom surface direction perpendicular to the main part, a plurality of guide grooves are in rotational symmetry.
2. spool as described in claim 1, which is characterized in that the guide groove is configured as being suitable for guidance liquid in spool unlatching
The shape of circumferential torque is generated in the process.
3. spool as described in claim 1, which is characterized in that the cross section of the guide groove from the bottom surface of the main part towards
The narrow contracting in the intersection direction of the main part and neck.
4. spool as claimed in claim 3, which is characterized in that the cross section of the guide groove from the bottom surface of the main part towards
The amplitude of the narrow contracting in the intersection direction of the main part and neck is uniformly or non-uniformly.
5. spool as claimed in claim 4, which is characterized in that when from the direction perpendicular to the spool longitudinal section, one
A complete guide groove has the outer contour that side is roughly vertical and the other side is generally ramped.
6. spool as claimed in claim 2, which is characterized in that when from the direction perpendicular to the spool longitudinal section, one
The outer contour that a complete guide groove has two sides generally ramped and the two is parallel to each other.
7. such as spool described in claim 5 or 6, which is characterized in that the generally ramped outer contour and the spool are perpendicular
Histogram to angle between 15~20 degree.
8. a kind of liquid valve characterized by comprising
Spool as described in any one of claim 1-7；And
Valve seat equipped with valve opening, it is described that the valve opening is configured so that at least part of the spool is movably received within
In valve opening.
9. liquid valve as claimed in claim 8, which is characterized in that the head configuration of the spool has primary sealing area, described
Along secondary sealing area is configured with, the primary sealing area and the secondary sealing area can be fitted to each other to be formed the top sides of valve opening
Sealing separates, and when first, second sealing surface cooperatively forms sealing, the neck and main part of the spool are in described
In valve opening.
10. liquid valve according to claim 8, it is characterised in that: the valve seat is additionally provided at least one liquid inlet, institute
Valve opening is stated to be configured to be connected to the liquid inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820778478.0U CN208456941U (en) | 2018-05-24 | 2018-05-24 | Liquid valve and its spool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820778478.0U CN208456941U (en) | 2018-05-24 | 2018-05-24 | Liquid valve and its spool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208456941U true CN208456941U (en) | 2019-02-01 |
Family
ID=65148476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820778478.0U Active CN208456941U (en) | 2018-05-24 | 2018-05-24 | Liquid valve and its spool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208456941U (en) |
-
2018
- 2018-05-24 CN CN201820778478.0U patent/CN208456941U/en active Active
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| GR01 | Patent grant | ||
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