CN109357144A - A kind of pressure limiting valve plug screw and plunger type lubrication oil pump pressure limiting valve - Google Patents
A kind of pressure limiting valve plug screw and plunger type lubrication oil pump pressure limiting valve Download PDFInfo
- Publication number
- CN109357144A CN109357144A CN201811550320.9A CN201811550320A CN109357144A CN 109357144 A CN109357144 A CN 109357144A CN 201811550320 A CN201811550320 A CN 201811550320A CN 109357144 A CN109357144 A CN 109357144A
- Authority
- CN
- China
- Prior art keywords
- oil
- plunger
- plug screw
- pressure limiting
- limiting valve
- 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.)
- Pending
Links
- 238000005461 lubrication Methods 0.000 title claims abstract description 10
- 239000003921 oil Substances 0.000 claims description 61
- 239000010687 lubricating oil Substances 0.000 claims description 11
- 206010008469 Chest discomfort Diseases 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 4
- 230000001050 lubricating effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010705 motor oil Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N13/00—Lubricating-pumps
- F16N13/02—Lubricating-pumps with reciprocating piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N23/00—Special adaptations of check valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The present invention provides a kind of pressure limiting valve plug screw, outer one section is equipped with external screw thread, and inner one section is equipped with an annular groove, in the position of the correspondence annular groove, equipped with radial oil-through-hole；The end face of the plug screw inner end is equipped with the blind hole of an axial direction, and the blind hole intersects with the oil-through-hole.The present invention additionally provides a kind of plunger type lubrication oil pump pressure limiting valve using above-mentioned pressure limiting valve plug screw, including valve opening simultaneously, and the hole wall of the valve opening is equipped with oil inlet and drain tap；The valve opening is sequentially installed with spring, plunger, plug screw from inside to outside；The oil inlet to open up position corresponding with the annular groove of the plug screw, the oil inlet is connected to main oil gallery, the pressure oil of main oil gallery acts on the end face of the plunger after oil inlet enters the blind hole of plug screw, pushes plunger that the elastic force of the spring is overcome to move inward.It since plug screw provided by the invention not only acts as sealing function, can also carry out drawing oil, so that plunger can be allowed to realize anti-dress.
Description
Technical field
The present invention relates to lubricating system of IC engine, a kind of pressure limiting valve plug screw and plunger type lubrication oil pump limit are related in particular to
Pressure valve.
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.The mounting structure of traditional engine oil pump pressure-limiting valve is followed successively by plunger, spring, plug screw from inside to outside, since plug screw can only play
The effect of fixed spring and sealing, so plunger is necessarily mounted at most the inside, this structure and just determines that pressure limiting valve can only be from valve
The inner end in hole is drawn oil and is fed back, thus must open up a through-hole and a pressure feedback chamber in the inner end of valve opening, leads
It causes the structure of valve opening excessively complicated and is unfavorable for processing.Also, due to the limitation of structure, existing pressure limiting valve is usually from pumping out
Mouth draws oil to feedback cavity, and when lubricating oil pump outlet oil pressure reaches the cracking pressure of design, pressure oil enters feedback cavity and pushes column
Plug is displaced outwardly compressed spring to open position, and pressure limiting valve starts draining, is fed back using pump discharge, hence it is evident that does not have main oil gallery
When feedback is in time for.
Summary of the invention
The object of the present invention is to provide a kind of pressure limiting valve plug screws, while providing a kind of lubricating oil pump pressure limiting using the plug screw
Valve, this plug screw can make the structure of valve opening more simple, and be fed back convenient for drawing oil from main oil gallery.
To achieve the above object, the present invention is about the technical solution of plug screw: a kind of pressure limiting valve plug screw, outer one section
Equipped with external screw thread, inner one section is equipped with an annular groove, in the position of the correspondence annular groove, equipped with radial oil-through-hole；
The end face of the plug screw inner end is equipped with the blind hole of an axial direction, and the blind hole intersects with the oil-through-hole.
The present invention is about the technical solution of pressure limiting valve: a kind of plunger type lubrication oil pump pressure limiting valve, including valve opening, the valve opening
Hole wall be equipped with oil inlet and drain tap；The valve opening is sequentially installed with spring, plunger, plug screw from inside to outside；The plug screw
Outer one section is equipped with external screw thread, and inner one section is equipped with an annular groove, in the position of the correspondence annular groove, is equipped with radial
Oil-through-hole, the end face of the plug screw inner end is equipped with the blind hole of an axial direction, and the blind hole intersects with the oil-through-hole；It is described
Oil inlet opens up that position is corresponding with the annular groove of the plug screw, and the oil inlet is connected to main oil gallery, the pressure of main oil gallery
Oil acts on the end face of the plunger after oil inlet enters the blind hole of plug screw, and plunger is pushed to overcome the elastic force of the spring inside
It is mobile.
Further, the generally column of the plunger, both ends diameter is big, and mid diameter is small, makes the middle part of plunger
An annular chamber is formed between the valve opening.
Further, the second oil inlet is additionally provided on the hole wall of the valve opening, the second oil inlet connection lubricating oil pump
High pressure chest, the low pressure chamber of drain tap connection lubricating oil pump, when the plunger moves inward under the action of main oil gallery pressure oil,
Second oil inlet can be communicated by the annular chamber in the middle part of the plunger with the drain tap.
Further, the inner end of the plunger is equipped with the groove for accommodating the spring.
Beneficial effect obtained by the present invention is:, can be with since plug screw provided by the invention not only acts as sealing function
It carries out drawing oil, this just determines that pressure limiting valve can draw oil from the outboard end of valve opening and be fed back, so that plunger be allowed to realize anti-dress, makes
The inner end of valve opening does not have to open up through-hole and pressure feedback chamber, and processing is more convenient, and this structure is conducive to from main oil gallery
Draw oily feedback, keeps feedback more timely, and pressure oscillation is small.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of pressure limiting valve plug screw in the embodiment of the present invention 1 and 2；
Fig. 2 is the schematic cross-sectional view of pressure limiting valve plug screw in the embodiment of the present invention 1 and 2；
Fig. 3 is pressure limiting valve overall structure diagram in the embodiment of the present invention 2；
Appended drawing reference are as follows:
1 --- spring 2 --- plunger 3 --- plug screw
31 --- annular groove 32 --- oil-through-hole 33 --- blind holes
4 --- oil inlet 5 --- the second oil inlet 6 --- drain taps
7 --- annular chamber.
Specific embodiment
For the ease of the understanding of those skilled in the art, the present invention is made further below with reference to embodiment and attached drawing
Bright, the content that embodiment refers to not is limitation of the invention.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is that orientation shown in the drawings or position are closed
System, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
Specific orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
In the description of the present invention, it should be noted that unless otherwise specified and limited, term " installation ", " connected ",
" connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, the connection being also possible to inside two elements can
, can also indirectly connected through an intermediary, for the ordinary skill in the art to be to be connected directly, it can basis
Concrete condition understands the concrete meaning of the term.
Embodiment 1
A kind of pressure limiting valve plug screw as shown in Figure 1, 2, outer one section is equipped with external screw thread, and inner one section is equipped with an annular
Slot 31, in the position of the correspondence annular groove 31, equipped with radial oil-through-hole 32；The end face of the plug screw inner end is equipped with one
Axial blind hole 33, the blind hole 33 intersect with the oil-through-hole 32.The plug screw of this structure not only acts as sealing function, may be used also
To carry out drawing oil.
Embodiment 2
As shown in Figure 1, 2, 3, the hole wall of a kind of plunger type lubrication oil pump pressure limiting valve, including valve opening, the valve opening is equipped with oil inlet
4, the second oil inlet 5 and drain tap 6；The valve opening is sequentially installed with spring 1, plunger 2, plug screw 3 from inside to outside；The plug screw 3
Outer one section is equipped with external screw thread, and inner one section is equipped with an annular groove 31 and is equipped in the position of the correspondence annular groove 31
Radial oil-through-hole 32, the end face of the plug screw inner end are equipped with the blind hole 33 of an axial direction, the blind hole 33 and the logical oil
Intersect in hole 32；Open up position, the oil inlet 4 and the main oil gallery corresponding with the annular groove 31 of the plug screw 3 of the oil inlet 4
Connection, the pressure oil of main oil gallery act on the end face of the plunger 2 after oil inlet 4 enters the blind hole 33 of plug screw 3, push plunger
2 overcome the elastic force of the spring 1 to move inward.
The pressure limiting valve of this structure, overturned it is traditional plunger must be mounted on to innermost mode, allow plunger to realize
Anti- dress, i.e. plunger are mounted in the outside of spring, make the inner end of valve opening not have to open up through-hole and pressure feedback chamber, process more square
Just, and this structure is conducive to draw oily feedback from main oil gallery, keeps feedback more timely, and pressure oscillation is small；Moreover, because
The change of mounting means is particularly suitable for those lubricating oil pump for having structure to limit.
As shown in figure 3, the generally column of the plunger 2, both ends diameter is big, and mid diameter is small, makes in plunger 3
An annular chamber 7 is formed between portion and the valve opening, the inner end of the plunger 2 is equipped with the groove for accommodating the spring；
Second oil inlet 5 is connected to the high pressure chest of lubricating oil pump, and the drain tap 6 is connected to the low pressure chamber of lubricating oil pump, when the plunger 2 exists
Main oil gallery pressure oil under the action of move inward, second oil inlet 5 can by the middle part of the plunger annular chamber 7 and institute
Drain tap 6 is stated to communicate.
Above-described embodiment is the preferable implementation of the present invention, and in addition to this, the present invention can be realized with other way,
Do not depart from the technical program design under the premise of it is any obviously replace it is within the scope of the present invention.
In order to allow those of ordinary skill in the art more easily to understand the improvements of the present invention compared with the existing technology, this
Some attached drawings of invention and description have been simplified, and for the sake of clarity, present specification is omitted some other members
Element, the element that those of ordinary skill in the art should be aware that these are omitted also may make up the contents of the present invention.
Claims (5)
1. a kind of pressure limiting valve plug screw, it is characterised in that: the plug screw outer one section is equipped with external screw thread, and inner one section is equipped with one
A annular groove (31), in the position of the correspondence annular groove (31), equipped with radial oil-through-hole (32)；The plug screw inner end
End face is equipped with the blind hole (33) of an axial direction, and the blind hole (33) is intersected with the oil-through-hole (32).
2. a kind of plunger type lubrication oil pump pressure limiting valve, including valve opening, spring (1), plunger (2), plug screw (3), the hole wall of the valve opening
It is equipped with oil inlet (4) and drain tap (6)；It is characterized by: the valve opening is sequentially installed with spring (1), plunger from inside to outside
(2), plug screw (3)；The plug screw (3) outer one section is equipped with external screw thread, and inner one section is equipped with an annular groove (31), right
The position for answering the annular groove (31), equipped with radial oil-through-hole (32), the end face of plug screw (3) inner end is equipped with an axis
To blind hole (33), the blind hole (33) intersects with the oil-through-hole (32)；The oil inlet (4) opens up position and the spiral shell
The annular groove (31) for filling in (3) is corresponding, and the oil inlet (4) is connected to main oil gallery, the pressure oil of main oil gallery through oil inlet (4) into
Enter to act on after the blind hole (33) of plug screw (3) end face of the plunger (2), plunger (2) is pushed to overcome the elastic force of the spring (1)
It moves inward.
3. plunger type lubrication oil pump pressure limiting valve according to claim 2, it is characterised in that: the generally column of the plunger (2)
Shape body, both ends diameter is big, and mid diameter is small, makes to form an annular chamber (7) between the middle part and the valve opening of plunger (2).
4. plunger type lubrication oil pump pressure limiting valve according to claim 3, it is characterised in that: be additionally provided on the hole wall of the valve opening
Second oil inlet (5), the high pressure chest of the second oil inlet (5) connection lubricating oil pump, the drain tap (6) are connected to the low of lubricating oil pump
Chamber is pressed, when the plunger (2) moves inward under the action of main oil gallery pressure oil, second oil inlet (5) can be by institute
The annular chamber (7) in the middle part of plunger is stated to communicate with the drain tap (6).
5. plunger type lubrication oil pump pressure limiting valve as claimed in any of claims 2 to 4, it is characterised in that: the plunger
(2) inner end is equipped with the groove for accommodating the spring (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811550320.9A CN109357144A (en) | 2018-12-18 | 2018-12-18 | A kind of pressure limiting valve plug screw and plunger type lubrication oil pump pressure limiting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811550320.9A CN109357144A (en) | 2018-12-18 | 2018-12-18 | A kind of pressure limiting valve plug screw and plunger type lubrication oil pump pressure limiting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109357144A true CN109357144A (en) | 2019-02-19 |
Family
ID=65329835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811550320.9A Pending CN109357144A (en) | 2018-12-18 | 2018-12-18 | A kind of pressure limiting valve plug screw and plunger type lubrication oil pump pressure limiting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109357144A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854328A (en) * | 2019-04-08 | 2019-06-07 | 湖南机油泵股份有限公司 | The impeller pump pump housing of low-pressure end is arranged in a kind of feedback oilhole |
| CN110219799A (en) * | 2019-07-05 | 2019-09-10 | 湖南机油泵股份有限公司 | A kind of engine oil pump pressure-limiting valve improving plunger wear |
| CN112096938A (en) * | 2020-09-17 | 2020-12-18 | 湖南机油泵股份有限公司 | Oil pump pressure limiting valve capable of reducing plunger eccentric wear |
| CN113217244A (en) * | 2021-06-25 | 2021-08-06 | 龙口龙泵柴油喷射高科有限公司 | Positive pressure common rail oil supply pump assembly for light diesel engine |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB729876A (en) * | 1953-08-01 | 1955-05-11 | Armstrong Patents Co Ltd | Improvements in or relating to hydraulic shock absorbers |
| JP2000073967A (en) * | 1998-09-02 | 2000-03-07 | Kayaba Ind Co Ltd | Variable displacement type vane pump |
| CN103180612A (en) * | 2010-05-03 | 2013-06-26 | 欧根·施密特博士仪器和泵制造有限责任公司 | Lubricant valve for oil pumps of internal combustion engines |
| CN103225736A (en) * | 2013-04-16 | 2013-07-31 | 湖南机油泵股份有限公司 | Engine oil pump with stable oil pressure |
| CN203516093U (en) * | 2013-09-16 | 2014-04-02 | 合肥力威汽车油泵有限公司 | Pressure and flow control valve of steering oil pump |
| CN204532460U (en) * | 2015-03-18 | 2015-08-05 | 北京福田康明斯发动机有限公司 | Oil pump and motor |
| KR20170027953A (en) * | 2015-09-03 | 2017-03-13 | 조봉현 | Variable vane oil pump for powersteering and automatic transmission of vehicle |
| CN207349770U (en) * | 2017-09-09 | 2018-05-11 | 湖南机油泵股份有限公司 | A kind of lubricating oil pump combination valve |
| CN209229328U (en) * | 2018-12-18 | 2019-08-09 | 湖南机油泵股份有限公司 | A kind of pressure limiting valve plug screw and plunger type lubrication oil pump pressure limiting valve |
-
2018
- 2018-12-18 CN CN201811550320.9A patent/CN109357144A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB729876A (en) * | 1953-08-01 | 1955-05-11 | Armstrong Patents Co Ltd | Improvements in or relating to hydraulic shock absorbers |
| JP2000073967A (en) * | 1998-09-02 | 2000-03-07 | Kayaba Ind Co Ltd | Variable displacement type vane pump |
| CN103180612A (en) * | 2010-05-03 | 2013-06-26 | 欧根·施密特博士仪器和泵制造有限责任公司 | Lubricant valve for oil pumps of internal combustion engines |
| CN103225736A (en) * | 2013-04-16 | 2013-07-31 | 湖南机油泵股份有限公司 | Engine oil pump with stable oil pressure |
| CN203516093U (en) * | 2013-09-16 | 2014-04-02 | 合肥力威汽车油泵有限公司 | Pressure and flow control valve of steering oil pump |
| CN204532460U (en) * | 2015-03-18 | 2015-08-05 | 北京福田康明斯发动机有限公司 | Oil pump and motor |
| KR20170027953A (en) * | 2015-09-03 | 2017-03-13 | 조봉현 | Variable vane oil pump for powersteering and automatic transmission of vehicle |
| CN207349770U (en) * | 2017-09-09 | 2018-05-11 | 湖南机油泵股份有限公司 | A kind of lubricating oil pump combination valve |
| CN209229328U (en) * | 2018-12-18 | 2019-08-09 | 湖南机油泵股份有限公司 | A kind of pressure limiting valve plug screw and plunger type lubrication oil pump pressure limiting valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854328A (en) * | 2019-04-08 | 2019-06-07 | 湖南机油泵股份有限公司 | The impeller pump pump housing of low-pressure end is arranged in a kind of feedback oilhole |
| CN109854328B (en) * | 2019-04-08 | 2024-04-02 | 湖南机油泵股份有限公司 | Rotor pump body with feedback oil hole arranged at low-pressure end |
| CN110219799A (en) * | 2019-07-05 | 2019-09-10 | 湖南机油泵股份有限公司 | A kind of engine oil pump pressure-limiting valve improving plunger wear |
| CN112096938A (en) * | 2020-09-17 | 2020-12-18 | 湖南机油泵股份有限公司 | Oil pump pressure limiting valve capable of reducing plunger eccentric wear |
| CN113217244A (en) * | 2021-06-25 | 2021-08-06 | 龙口龙泵柴油喷射高科有限公司 | Positive pressure common rail oil supply pump assembly for light diesel engine |
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