CN205823511U - There is the diesel injection pump of oil scraping mechanism - Google Patents
There is the diesel injection pump of oil scraping mechanism Download PDFInfo
- Publication number
- CN205823511U CN205823511U CN201620756516.3U CN201620756516U CN205823511U CN 205823511 U CN205823511 U CN 205823511U CN 201620756516 U CN201620756516 U CN 201620756516U CN 205823511 U CN205823511 U CN 205823511U
- Authority
- CN
- China
- Prior art keywords
- plunger
- plunger rod
- injection pump
- oil
- pressed
- 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.)
- Expired - Fee Related
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- Fuel-Injection Apparatus (AREA)
Abstract
The utility model discloses a kind of diesel injection pump with oil scraping mechanism, including the pump housing, camshaft, plunger matching parts and tourelle.The described pump housing has cam chamber and plunger cavity, and described camshaft is rotatably arranged in described cam chamber.Described plunger matching parts includes that plunger bushing and plunger rod, described plunger bushing are fixed in described plunger cavity, and this plunger rod is slidably disposed in described plunger bushing.The bottom of this plunger rod is pressed on described tourelle, and this tourelle is positioned on described camshaft.The lower section of described plunger bushing is provided with annular groove, is provided with one and scrapes oil jacket in described annular groove.This frizing set has multiple prominent ring, and this prominent ring is pressed on described plunger rod.The prominent ring scraping oil jacket is pressed on described plunger rod, and during plunger rod slides, prominent ring constantly scrapes off the fluid of plunger rod outer surface, it is ensured that plunger rod smooth outer surface, improves pump oil efficiency.
Description
Technical field
This utility model relates to diesel engine fuel injecting device, particularly relates to a kind of diesel injection pump with oil scraping mechanism.
Background technology
Diesel injection pump mainly includes the pump housing, camshaft, plunger matching parts, delivery valve matching parts and tourelle etc..
Plunger matching parts includes plunger bushing and plunger rod.In the course of the work, plunger rod constantly slides.Owing to being full of oil around plunger rod
Liquid, part fluid long-term adhesion is on plunger rod.Rotten fluid forms membrane structure, affects the circularity of plunger rod, Jin Erying
Ring the slip of plunger rod.Prior art has necessity of improvement further.
Utility model content
The utility model proposes a kind of diesel injection pump with oil scraping mechanism, by it in plunger rod work process
Outer surface is detained too much fluid and scrapes off, it is ensured that plunger rod smooth outer surface, improves pump oil efficiency.
The technical solution of the utility model is achieved in that
A kind of diesel injection pump with oil scraping mechanism, including the pump housing, camshaft, plunger matching parts and tourelle,
It is characterized in that, the described pump housing has cam chamber and plunger cavity, and described camshaft is rotatably arranged in described cam chamber, institute
Stating plunger matching parts and include that plunger bushing and plunger rod, described plunger bushing are fixed in described plunger cavity, this plunger rod sets slidably
Putting in described plunger bushing, the bottom of this plunger rod is pressed on described tourelle, and this tourelle is positioned at described camshaft
On, wherein, the lower section of described plunger bushing is provided with annular groove, is provided with one and scrapes oil jacket in described annular groove, and this frizing set has multiple prominent
Ring, this prominent ring is pressed on described plunger rod.
In the diesel injection pump with oil scraping mechanism of the present utility model, it is logical that the sidewall of described plunger bushing is provided with location
Hole, described in scrape the sidewall of oil jacket and be provided with Blind locating holes, a screw is fixed in this positioning through hole, and the end of this screw is stretched into described
Blind locating holes.
In the diesel injection pump with oil scraping mechanism of the present utility model, the bottom of described plunger rod is provided with location
Ring, described diesel injection pump also includes the spring seat of honour, spring lower seat and thrust spring, and one end of described thrust spring connects
To the described spring seat of honour, the other end is connected to described spring lower seat, and the described spring seat of honour is pressed in described pump housing inwall, described spring
Lower seat is pressed on described locating ring.
In the diesel injection pump with oil scraping mechanism of the present utility model, described tourelle includes push rod, roller,
Described roller is rotatably arranged in described push rod lower end, and described locating ring is pressed in the upper end of described push rod.
In the diesel injection pump with oil scraping mechanism of the present utility model, this diesel injection pump also includes delivery valve
Couple, described delivery valve matching parts is positioned at the top of described plunger matching parts.
Implement this diesel injection pump with oil scraping mechanism of the present utility model, have the advantages that frizing
The prominent ring of set is pressed on described plunger rod, and during plunger rod slides, prominent ring constantly scrapes off plunger rod outer surface
Fluid, it is ensured that plunger rod smooth outer surface, improves pump oil efficiency.Screw can scrape oil jacket and be fixed on the lower section of plunger bushing, simultaneously
Facilitate again operator's disassembly, cleaning.When plunger rod is positioned at topmost, scrapes at least part of prominent ring of oil jacket and expose plunger rod, expose
In fluid.The vibration of fluid can clean the trench portions put forward between prominent ring.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of this diesel injection pump with oil scraping mechanism of the present utility model；
Fig. 2 is the sectional view of the plunger matching parts of Fig. 1；
Fig. 3 is the schematic diagram of the other direction of Fig. 2；
Fig. 4 is the partial view of Fig. 2；
Fig. 5 is the schematic diagram under another state of Fig. 3；
Fig. 6 is the partial view at the A of Fig. 2；
Fig. 7 is the partial view at the B of Fig. 2.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe.
Such as Fig. 1 to the of the present utility model this diesel injection pump shown in 7, including the pump housing 100, camshaft 200, plunger
Couple 300, tourelle 400 and delivery valve matching parts 500.The described pump housing 100 has cam chamber 110 and plunger cavity 120, described
Camshaft 200 is rotatably arranged in described cam chamber 110.Described plunger matching parts 300 includes plunger bushing 310 and plunger rod
320, described plunger bushing 310 is fixed in described plunger cavity 120.This plunger rod 320 is slidably disposed on described plunger bushing 310
In, the bottom of this plunger rod 320 is pressed on described tourelle 400, and this tourelle 400 is positioned on described camshaft 200.
Driving means drives camshaft 200 to rotate, and camshaft 200 drives tourelle 400 and plunger rod about 320 by cam 210
Mobile, plunger rod 320 is pump oil, draining in moving process.Delivery valve matching parts 500 is positioned at above plunger matching parts 300, the bavin pumped out
Oil sprays from delivery valve matching parts 500.In the present embodiment, the bottom of described plunger rod 320 is provided with locating ring 321, described bavin
Oil machine injection pump also includes the spring seat of honour 610, spring lower seat 620 and thrust spring 630.One end of described thrust spring 630
Being connected to the described spring seat of honour 610, the other end is connected to described spring lower seat 620, and the described spring seat of honour 610 is pressed in the described pump housing
100 inwalls, described spring lower seat 620 is pressed on described locating ring 321.Described tourelle 400 includes push rod 410, roller
420, described roller 420 is rotatably arranged in described push rod 410 lower end, and described locating ring 321 is pressed in the upper of described push rod 410
End.This diesel injection pump also includes controlling oil pull bar 640, fuel-displaced tight seat 650 etc., does not repeats at this.
The lower section of described plunger bushing 310 is provided with annular groove 325, is provided with one and scrapes oil jacket 340 in described annular groove 325, and this scrapes oil jacket
340 have multiple prominent ring 341, and this prominent ring 341 is pressed on described plunger rod 320.The prominent ring 341 scraping oil jacket 340 is pressed in
On described plunger rod 320, during plunger rod 320 slides, prominent ring 341 constantly scrapes off the oil of plunger rod 320 outer surface
Liquid, it is ensured that plunger rod 320 smooth outer surface, improves pump oil efficiency.The sidewall of described plunger bushing 310 is provided with positioning through hole 313, institute
The sidewall stating prominent ring 341 is provided with Blind locating holes 342, and a screw 343 is fixed in this positioning through hole 313, the end of this screw 343
Portion stretches into described Blind locating holes 342.Screw can scrape oil jacket 340 and be fixed on the lower section of plunger bushing 310, facilitates again operator simultaneously
Disassembly, cleaning.When plunger rod 320 is positioned at topmost, scrapes at least part of prominent ring 341 of oil jacket 340 and expose plunger rod 320, expose
In fluid.The vibration of fluid can clean groove 344 part put forward between prominent ring 341.Additionally, described plunger rod 320
Sidewall is additionally provided with oil storage tank 350, and this oil storage tank 350 is made up of two curved portions 351 and a protuberance 352, this protuberance 352
Between two described curved portions 351.Part fluid can be stored, it is ensured that plunger rod 320 lubricates in oil storage tank 350.This storage
The arcuate structure of oil groove 350, can avoid stress to concentrate, and improves part durability.
Described plunger bushing 310 includes that fuel feed hole 311, the middle part of described plunger rod 320 are provided with centre bore 322, this plunger rod
The sidewall of 320 is provided with helicla flute 323, and this helicla flute 323 connects described fuel feed hole 311 and centre bore 322.Plunger rod 320 end face
When overlapping with fuel feed hole 311 outer wall bus, oil pressure increases, and starts pump oil.By driving lever 330 Rotational Cylindrical stopper rod 320, adjustable spiral shell
Spin slot 323 and the relative position of fuel feed hole 311, change pump oil stroke.Described plunger bushing 310 also includes spill port 312, described in
The bottom of central hole 322 is provided with lower counterbore 324, and the sidewall of this centre bore 322 is additionally provided with annular groove 325, and this annular groove 325 is through a lateral aperture
326 are connected to described lower counterbore 324.When pump oil starts, annular groove 325 overlaps with spill port 312, and the diesel oil of fraction is through lower counterbore
324 enter spill port 312, it is to avoid oil pressure increases suddenly.When annular groove 325 leaves spill port 312, oil pressure may proceed to again rise.
During oil-feed, oil pressure seriality increases, and beneficially diesel oil fully burns.Lower counterbore 324 connects back to oilhole 312 through annular groove 325,
No matter how plunger rod 320 rotates, and annular groove 325 remains at specific height connection lower counterbore 324 and spill port 312.Institute
Stating the diameter diameter less than described centre bore 322 of lower counterbore 324, the diameter of described spill port 312 is less than described fuel feed hole 311
Diameter.The oil return of small-bore can ensure that the pressure release of the little scope of spill port 312, is not enough to affect pump oil process.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all at this
Within the spirit of utility model and principle, any modification, equivalent substitution and improvement etc. made, should be included in this utility model
Protection domain within.
Claims (5)
1. there is a diesel injection pump for oil scraping mechanism, including the pump housing, camshaft, plunger matching parts and tourelle, its
Being characterised by, the described pump housing has cam chamber and plunger cavity, and described camshaft is rotatably arranged in described cam chamber, described
Plunger matching parts includes that plunger bushing and plunger rod, described plunger bushing are fixed in described plunger cavity, and this plunger rod is mounted slidably
In described plunger bushing, the bottom of this plunger rod is pressed on described tourelle, and this tourelle is positioned on described camshaft,
Wherein, the lower section of described plunger bushing is provided with annular groove, is provided with one and scrapes oil jacket in described annular groove, and this frizing set has multiple prominent ring,
This prominent ring is pressed on described plunger rod.
The diesel injection pump with oil scraping mechanism the most according to claim 1, it is characterised in that the side of described plunger bushing
Wall is provided with positioning through hole, described in scrape the sidewall of oil jacket and be provided with Blind locating holes, a screw is fixed in this positioning through hole, this screw
Described Blind locating holes is stretched in end.
The diesel injection pump with oil scraping mechanism the most according to claim 1, it is characterised in that under described plunger rod
End is provided with locating ring, and described diesel injection pump also includes the spring seat of honour, spring lower seat and thrust spring, described thrust bullet
One end of spring is connected to the described spring seat of honour, and the other end is connected to described spring lower seat, and the described spring seat of honour is pressed in the described pump housing
Inwall, described spring lower seat is pressed on described locating ring.
The diesel injection pump with oil scraping mechanism the most according to claim 3, it is characterised in that described tourelle bag
Including push rod, roller, described roller is rotatably arranged in described push rod lower end, and described locating ring is pressed in the upper end of described push rod.
The diesel injection pump with oil scraping mechanism the most according to claim 1, it is characterised in that this diesel injection pump
Also include that delivery valve matching parts, described delivery valve matching parts are positioned at the top of described plunger matching parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620756516.3U CN205823511U (en) | 2016-07-19 | 2016-07-19 | There is the diesel injection pump of oil scraping mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620756516.3U CN205823511U (en) | 2016-07-19 | 2016-07-19 | There is the diesel injection pump of oil scraping mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205823511U true CN205823511U (en) | 2016-12-21 |
Family
ID=57562894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620756516.3U Expired - Fee Related CN205823511U (en) | 2016-07-19 | 2016-07-19 | There is the diesel injection pump of oil scraping mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205823511U (en) |
-
2016
- 2016-07-19 CN CN201620756516.3U patent/CN205823511U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161221 Termination date: 20170719 |