CN208364832U - It is avoided that the pressure limiting valve plunger and engine oil pump pressure-limiting valve of clamping stagnation - Google Patents
It is avoided that the pressure limiting valve plunger and engine oil pump pressure-limiting valve of clamping stagnation Download PDFInfo
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- CN208364832U CN208364832U CN201820941259.XU CN201820941259U CN208364832U CN 208364832 U CN208364832 U CN 208364832U CN 201820941259 U CN201820941259 U CN 201820941259U CN 208364832 U CN208364832 U CN 208364832U
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- plunger
- limiting valve
- avoided
- clamping stagnation
- pressure
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- 239000010705 motor oil Substances 0.000 title claims abstract description 16
- 230000002093 peripheral effect Effects 0.000 claims abstract description 12
- 239000003921 oil Substances 0.000 claims description 22
- 238000009434 installation Methods 0.000 claims description 2
- 239000012535 impurity Substances 0.000 abstract description 10
- 239000010721 machine oil Substances 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 4
- 239000010687 lubricating oil Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
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Abstract
The utility model provides a kind of pressure limiting valve plunger for being avoided that clamping stagnation, and the plunger is cylindrical structure closed at one end, and the outer peripheral surface of the cylinder is equipped with the groove of several axial directions.Meanwhile the utility model additionally provides a kind of engine oil pump pressure-limiting valve for being avoided that clamping stagnation, main improvement is to use above-mentioned piston structure.Since the outer peripheral surface of plunger is equipped with the groove of several axial directions, thus reduce the contact area of plunger outer peripheral surface and valve opening, to reduce frictional resistance between the two, and this groove can accommodate the impurity particle in machine oil, to reduce the probability that impurity particle is stuck between plunger and valve opening, therefore greatly reduce risk of the plunger by clamping stagnation；After pressure limiting valve is opened, since draining flow velocity is high, and drainage direction is identical as the axis direction of plunger, therefore can go out in time the impurity in plunger outer peripheral surface groove, and impurity is avoided to deposit always in the trench.
Description
Technical field
The utility model belongs to lubricating system of IC engine, more particularly to a kind of pressure limiting valve plunger for being avoided that clamping stagnation and
A kind of engine oil pump pressure-limiting valve being avoided that clamping stagnation.
Background technique
Lubricating oil pump is component important in lubricating system, and function is that the machine of enough pressure and flow is provided for lubricating system
Oil, oil pressure must assure that in a certain range, to guarantee that each friction member is adequately lubricated and do not damage correlation
Pressure part.
Engine oil pump pressure-limiting valve plays control oil flow rate in lubricating oil pump operational process, adjusts the work of engine oil pressure size
With including valve opening and the plunger, spring and the plug screw that are mounted in valve opening.The plunger of traditional engine oil pump pressure-limiting valve mostly uses one end
Closed cylindrical structure cooperates between the periphery of plunger and the hole wall of valve opening for small―gap suture.When lubricating oil pump outlet oil pressure reaches
When the cracking pressure of design, oil pressure pushes plunger axial movement compressed spring to open position, and pressure limiting valve starts draining.
In the actual use process, engine oil pump pressure-limiting valve has the disadvantage that the periphery of 1, plunger there are sharp edge hairs
Thorn；2, residual machining aluminium skimmings on valve opening hole wall；3, contain impurity in machine oil.These situations be all easy to make the periphery of plunger with
Occur the risk of clamping stagnation between the hole wall of valve opening, plunger is made to can not be successfully axial movement, causes engine oil pump pressure-limiting valve normal
It opens or closes, cause lubricating oil pump outlet oil pressure control lag or reduces the ability of plunger oil sealing, extreme influence engine lubrication
The reliability of system work, it is serious or even can not be closed due to plunger clamping stagnation, cause pump discharge machine oil all to release, starts
Owner's runner is unlubricated and burns to death.
Utility model content
The purpose of the utility model is to provide a kind of pressure limiting valve plungers for being avoided that clamping stagnation and one kind to use this column
The engine oil pump pressure-limiting valve of plug avoids and occurs the risk of clamping stagnation during plunger moves axially.
To achieve the above object, the utility model is about the technical solution of plunger: a kind of pressure limiting valve being avoided that clamping stagnation
Plunger, the plunger are cylindrical structure closed at one end, and the outer peripheral surface of the cylinder is equipped with the groove of several axial directions.
Further, the plunger can be divided into two sections by the difference of outer diameter, wherein being leading portion close to one section of closed end, separately
One section is back segment, and the outer diameter of the leading portion is less than the outer diameter of the back segment, and the outer peripheral surface of the back segment is equipped with several axial directions
Groove.
Preferably, the end face of the closed end is plane.
Preferably, the end face of the closed end and cylinder periphery junction are set as chamfering, make the section of entire closed end
For frustum cone structure.
Further, the side wall of the leading portion is equipped with gas vent.
The utility model is about the technical solution of pressure limiting valve: a kind of engine oil pump pressure-limiting valve being avoided that clamping stagnation, including
Valve body, the valve body are equipped with valve opening, be equipped in the valve opening it is as described in the above technical scheme any one be avoided that
The pressure limiting valve plunger of clamping stagnation.
Further, the hole wall of the valve opening is equipped with drain tap, and one end of the valve opening is connected with oil inlet, it is described into
The internal diameter of hydraulic fluid port is less than the internal diameter of the valve opening, one cricoid step of junction formation of the oil inlet and the valve opening
Face, the step surface are plane or inclined-plane, and the end face of the step surface and the plunger fits.
Further, the drain tap is located proximate to the step surface.
The beneficial effects of the utility model are: the outer peripheral surface due to plunger is equipped with the groove of several axial directions, thus make
The contact area of plunger outer peripheral surface and valve opening is reduced, to reduce frictional resistance between the two, and this groove can
The impurity particle in machine oil is accommodated, to reduce the probability that impurity particle is stuck between plunger and valve opening, therefore is greatly reduced
Plunger is by the risk of clamping stagnation；After pressure limiting valve is opened, since draining flow velocity is high, and the axis direction phase of drainage direction and plunger
Together, therefore the impurity in plunger outer peripheral surface groove can be gone out in time, impurity is avoided to deposit always in the trench.Further
In technical solution, since the outer diameter of plunger leading portion is less than the outer diameter of back segment, larger gap thus is formed with valve opening, is avoided tiny
Impurity accumulation, further decreases clamping stagnation risk.For pressure limiting valve, in preferred technical solution, due to the position of drain tap
The step surface of nearly valve opening is rested against, in this way when lubricating oil pump outlet oil pressure reaches the cracking pressure of design, oil pressure only needs to push column
Plug moves axially very short distance in valve opening, oil inlet and drain tap can be made to communicate, pressure limiting valve starts draining, works as lubricating oil pump
After outlet oil pressure restores normal, plunger, to the mobile very short distance of step surface, can make pressure limiting valve under the elastic force effect of spring
It closes, and the distance that plunger moves axially in valve opening is shorter, the risk for clamping stagnation occur is lower.
Detailed description of the invention
Fig. 1 is the pressure limiting valve switch plunger structure diagram in the utility model embodiment 1；
Fig. 2 is the pressure limiting valve switch plunger structure diagram in the utility model embodiment 2；
Fig. 3 is the dextrad view of Fig. 1 and Fig. 2；
Fig. 4 is the pressure limiting valve structure schematic diagram in the utility model embodiment 3；
Fig. 5 is the pressure limiting valve structure schematic diagram in the utility model embodiment 4；
Appended drawing reference are as follows:
1 --- valve body 2 --- valve opening 3 --- drain tap
4 --- oil inlet 5 --- plunger 6 --- springs
7 --- plug screw 51 --- closed end 511 --- chamferings
52 --- leading portion 521 --- ventholes
53 --- back segment 531 --- grooves.
Specific embodiment
For the ease of the understanding of those skilled in the art, the utility model is made below with reference to embodiment and attached drawing further
Explanation, the content that embodiment refers to not is restriction to the utility model.
In the description of the present invention, it should be understood that term " on ", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "top", "bottom", "inner", "outside" is orientation shown in the drawings or position
Relationship is merely for convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In the description of the present invention, it should be noted that unless otherwise specified and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, the company being also possible to inside two elements
It is logical, it can be directly connected, can also indirectly connected through an intermediary, for the ordinary skill in the art, it can
To understand the concrete meaning of the term as the case may be.
Embodiment 1
As shown in Figure 1,3, a kind of pressure limiting valve plunger being avoided that clamping stagnation, the plunger are cylindrical structure closed at one end,
The cylinder can be divided into two sections by the difference of outer diameter, wherein being leading portion 52 close to one section of closed end 51, another section is back segment 53, preceding
The outer diameter of section 52 is less than the outer diameter of the back segment 53, and the outer peripheral surface of back segment 53 is equipped with the groove 531 of several axial directions, leading portion 52
Side wall is equipped with gas vent 521, and the end face of closed end 51 is plane.
Embodiment 2
As shown in Figure 2,3, the overall structure of the pressure limiting valve plunger in the present embodiment and the piston structure in embodiment 1 are basic
It is identical, the difference is that the end face of closed end 51 and cylinder periphery junction are set as chamfering 511, make entire closed end 51
Section is frustum cone structure.
Embodiment 3
A kind of engine oil pump pressure-limiting valve of anti-clamping stagnation as shown in Figure 4, including valve body 1, valve body 1 are equipped with valve opening 2, valve opening 2
In be sequentially installed with plunger 5, spring 6 and plug screw 7 inside-out, the hole wall of valve opening 2 is equipped with drain tap 3, and one end of valve opening 2 connects
It is connected to oil inlet 4, the internal diameter of oil inlet 4 is less than the internal diameter of valve opening 2, and the junction formation one of oil inlet 4 and valve opening 2 is cricoid
Step surface, the step surface are plane, and the end face of the step surface and the plunger fits, and drain tap 3 is located proximate to this
Step surface.
Plunger 5 in the present embodiment uses the piston structure in embodiment 1, and specific structure is referring to Fig. 1,3.
Embodiment 4
A kind of engine oil pump pressure-limiting valve of anti-clamping stagnation as shown in Figure 5, including valve body 1, valve body 1 are equipped with valve opening 2, valve opening 2
In be sequentially installed with plunger 5, spring 6 and plug screw 7 inside-out, the hole wall of valve opening 2 is equipped with drain tap 3, and one end of valve opening 2 connects
It is connected to oil inlet 4, the internal diameter of oil inlet 4 is less than the internal diameter of valve opening 2, and the junction formation one of oil inlet 4 and valve opening 2 is cricoid
Step surface, the step surface are inclined-plane, and the end face of the step surface and the plunger fits, and drain tap 3 is located proximate to this
Step surface.
Plunger 5 in the present embodiment uses the piston structure in embodiment 2, specific structure referring to fig. 2,3.
Above-described embodiment is the preferable implementation of the utility model, and in addition to this, the utility model can be with other sides
Formula realizes that any obvious replacement is in the protection model of the utility model under the premise of not departing from the technical program design
Within enclosing.For example, the cylindrical structure of plunger does not need to form outer diameter different leading portion and back segment, as long as if being equipped in cylinder circumferential surface
The groove of dry item axial direction, the technical issues of just can solve the utility model.
In order to allow those of ordinary skill in the art more easily understand the improvement of the utility model compared with the existing technology it
Place, some attached drawings of the utility model and description have been simplified, and for the sake of clarity, present specification is omitted one
A little other elements, the element that those of ordinary skill in the art should be aware that these are omitted also may make up the interior of the utility model
Hold.
Claims (8)
1. a kind of pressure limiting valve plunger for being avoided that clamping stagnation, it is characterised in that: the plunger is cylindrical structure closed at one end, the circle
The outer peripheral surface of cylinder is equipped with the groove (531) of several axial directions.
2. being avoided that the pressure limiting valve plunger of clamping stagnation according to claim 1, it is characterised in that: the plunger presses the difference of outer diameter
Two sections can be divided into, wherein being leading portion (52) close to one section of closed end (51), another section is back segment (53), the leading portion (52)
Outer diameter is less than the outer diameter of the back segment (53), and the outer peripheral surface of the back segment (53) is equipped with the groove (531) of several axial directions.
3. the pressure limiting valve plunger according to claim 1 or claim 2 for being avoided that clamping stagnation, it is characterised in that: the closed end (51)
End face is plane.
4. the pressure limiting valve plunger according to claim 1 or claim 2 for being avoided that clamping stagnation, it is characterised in that: the closed end (51)
End face and cylinder periphery junction are set as chamfering (511), make the section frustum cone structure of entire closed end (51).
5. the pressure limiting valve plunger according to claim 2 for being avoided that clamping stagnation, it is characterised in that: the side wall of the leading portion (52)
It is equipped with gas vent (521).
6. a kind of engine oil pump pressure-limiting valve for being avoided that clamping stagnation, including valve body (1), the valve body (1) is equipped with valve opening (2), special
Sign is: installation is just like plunger described in any one of claims 1 to 5 in the valve opening.
7. the engine oil pump pressure-limiting valve according to claim 6 for being avoided that clamping stagnation, it is characterised in that: the hole of the valve opening (2)
Wall is equipped with drain tap (3), and one end of the valve opening (2) is connected with oil inlet (4), and the internal diameter of the oil inlet (4) is less than institute
State the internal diameter of valve opening (2), the junction of the oil inlet (4) and the valve opening (2) forms a cricoid step surface, and described
Terrace is plane or inclined-plane, and the step surface and the end face of the plunger (5) fit.
8. the engine oil pump pressure-limiting valve according to claim 7 for being avoided that clamping stagnation, it is characterised in that: the drain tap (3)
It is located proximate to the step surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820941259.XU CN208364832U (en) | 2018-06-19 | 2018-06-19 | It is avoided that the pressure limiting valve plunger and engine oil pump pressure-limiting valve of clamping stagnation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820941259.XU CN208364832U (en) | 2018-06-19 | 2018-06-19 | It is avoided that the pressure limiting valve plunger and engine oil pump pressure-limiting valve of clamping stagnation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208364832U true CN208364832U (en) | 2019-01-11 |
Family
ID=64929440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820941259.XU Active CN208364832U (en) | 2018-06-19 | 2018-06-19 | It is avoided that the pressure limiting valve plunger and engine oil pump pressure-limiting valve of clamping stagnation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208364832U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108692052A (en) * | 2018-06-19 | 2018-10-23 | 湖南机油泵股份有限公司 | It is avoided that the pressure limiting valve plunger and engine oil pump pressure-limiting valve of clamping stagnation |
-
2018
- 2018-06-19 CN CN201820941259.XU patent/CN208364832U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108692052A (en) * | 2018-06-19 | 2018-10-23 | 湖南机油泵股份有限公司 | It is avoided that the pressure limiting valve plunger and engine oil pump pressure-limiting valve of clamping stagnation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No.69 Beizheng street, Chengguan Town, Hengdong County, Hengyang City, Hunan Province Patentee after: Hunan Meihu Intelligent Manufacturing Co.,Ltd. Country or region after: China Address before: No.69 Beizheng street, Chengguan Town, Hengdong County, Hengyang City, Hunan Province Patentee before: Hunan Oil Pump Co.,Ltd. Country or region before: China |
|
| CP03 | Change of name, title or address |