CN209687637U - A kind of enhanced type injection pump - Google Patents
A kind of enhanced type injection pump Download PDFInfo
- Publication number
- CN209687637U CN209687637U CN201920369650.1U CN201920369650U CN209687637U CN 209687637 U CN209687637 U CN 209687637U CN 201920369650 U CN201920369650 U CN 201920369650U CN 209687637 U CN209687637 U CN 209687637U
- Authority
- CN
- China
- Prior art keywords
- spring
- pump housing
- plunger
- seat
- nozzle tip
- 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
Links
- 238000002347 injection Methods 0.000 title claims abstract description 18
- 239000007924 injection Substances 0.000 title claims abstract description 18
- 238000007789 sealing Methods 0.000 claims description 4
- 239000007921 spray Substances 0.000 description 2
- 230000036461 convulsion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
The utility model discloses a kind of enhanced type injection pump, including the pump housing, main shaft, plunger and several nozzle tips, the plunger is slidably connected in the cylinder of nozzle tip lower end；Nozzle tip lower end cylinder is inserted into the pump housing, and oil spout both sides of head is carried on the pump housing by convex shoulder；The main shaft is set to pump housing inside bottom；The nozzle tip lower thread is connected with adjusting gear ring, is connected with the spring seat of honour on the outside of the adjusting gear ring, spring seat of honour lower end is provided with spring lower seat；A plunger spring is provided between the spring seat of honour and spring lower seat.Compared with prior art, a kind of enhanced type injection pump of the utility model, on the one hand using gear ring is adjusted, adjustable increasing ram travel is guaranteeing high charge oil pressure simultaneously, is reducing driving torque, improving reliability；Pump housing height is effectively reduced using oblate structure in another aspect plunger spring, reduces injection pump volume weight, while oblate structure is capable of providing required pretightning force.
Description
Technical field
The utility model relates to injection pump manufacturing field, in particular to a kind of enhanced type injection pumps.
Background technique
Jerk fuel injection pump is the heart component of diesel engine, recently as the development of diesel engine science and technology, to plunger
The requirement of formula injection pump is higher and higher, especially 12V cylinder diameter 135-145mm multi-cylinder diesel engine, proposes to its discharge capacity and volume
Higher requirement.
Utility model content
The technical problems to be solved in the utility model is in view of the above shortcomings of the prior art, and to provide a kind of spray of enhanced type
Oil pump.
In order to solve the above technical problems, the technical solution adopted in the utility model is:
A kind of enhanced type injection pump, including the pump housing, main shaft, plunger and several nozzle tips, the plunger are slidably connected to spray
In the cylinder of oil head lower end；Nozzle tip lower end cylinder is inserted into the pump housing, and oil spout both sides of head is carried on the pump housing by convex shoulder, institute
Convex shoulder is stated to be fixedly connected by stud, bolt and gasket and the pump housing；The main shaft is connected to the pump housing by the bearing at both ends
Inside bottom, several cams have been connected by key on the main shaft, and the cam is correspondingly arranged in below corresponding nozzle tip；It is described
Nozzle tip lower end cylinder outside screw is connected with adjusting gear ring, is connected with the spring seat of honour on the outside of the adjusting gear ring；The spring
Seat of honour lower end is correspondingly arranged on spring lower seat and sliding sleeve, and the sliding sleeve is slidably connected in the pump housing, and sliding sleeve passes through pump housing side
Positioning screw is limited, and a tappet body is rotatably connected in the sliding sleeve；The spring lower seat is connected in sliding sleeve upper end, described
Position is connect with plunger lower end among spring lower seat；A plunger spring is provided between the spring seat of honour and spring lower seat.
Further, the nozzle tip is 12, and distance is 40mm between nozzle tip axis.
Further, the plunger spring section is oblateness.
Further, " O " type sealing ring is set between the spring seat of honour and the pump housing.
Compared with prior art, a kind of enhanced type injection pump of the utility model can be adjusted on the one hand using gear ring is adjusted
Section increases ram travel, is guaranteeing high charge oil pressure simultaneously, is reducing driving torque, is improving reliability；Another aspect plunger spring
Using oblate structure, pump housing height is effectively reduced, reduces injection pump volume weight, while needed for oblate structure is capable of providing
The pretightning force wanted.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Wherein, 1, the pump housing, 2, main shaft, 3, plunger, 4, nozzle tip, 5, convex shoulder, 6, cam, 7, adjust gear ring, 8, on spring
Seat, 9, spring lower seat, 10, sliding sleeve, 11, positioning screw, 12, tappet body, 13, plunger spring, 14, " O " type sealing ring.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1, a kind of enhanced type injection pump, including the pump housing 1, main shaft 2, plunger 3 and several nozzle tips 4, the column
Plug 3 is slidably connected in 4 lower end cylinder of nozzle tip；In 4 lower end cylinder of the nozzle tip insertion pump housing 1,4 two sides of nozzle tip pass through
Convex shoulder 5 is carried on the pump housing 1, and the convex shoulder 5 is fixedly connected by stud, bolt and gasket and the pump housing 1；The main shaft 2
It is connected to 1 inside bottom of the pump housing by the bearing at both ends, several cams 6, the cam 6 have been connected by key on the main shaft 2
It is correspondingly arranged in corresponding 4 lower section of nozzle tip；The 4 lower end cylinder outside screw of nozzle tip, which is connected with, adjusts gear ring 7, the adjusting
The spring seat of honour 8 is connected on the outside of gear ring 7；8 lower end of the spring seat of honour is correspondingly arranged on spring lower seat 9 and sliding sleeve 10, the cunning
Set 10 is slidably connected in the pump housing 1, and sliding sleeve 10 is limited by the positioning screw 11 of 1 side of the pump housing, is turned in the sliding sleeve 10
It is dynamic to be connected with a tappet body 12；The spring lower seat 9 is connected in 10 upper end of sliding sleeve, the intermediate position of the spring lower seat 9 and plunger 3
Lower end connection；A plunger spring 13, in the present embodiment, the plunger are provided between the spring seat of honour 8 and spring lower seat 9
13 section of spring is oblateness, and using the plunger spring 13 of oblate structure, the initial tension of spring required for providing simultaneously, drops
Low pump housing height, reduces the volume weight of injection pump.
Further, in the present embodiment, the nozzle tip 4 is 12, and distance is 40mm between 4 axis of nozzle tip.
Further, high pressure oil is revealed in order to prevent, and " O " type sealing ring is arranged between the spring seat of honour 8 and the pump housing 1
14。
The utility model is not limited to the embodiment described, and those skilled in the art is not departing from the utility model
Spirit is that still may make some modifications or changes, therefore the rights protection scope of the utility model is with claims in the open scope
Subject to the range of restriction.
Claims (4)
1. a kind of enhanced type injection pump, including the pump housing, main shaft, plunger and several nozzle tips, the plunger are slidably connected to oil spout
In the cylinder of head lower end；Nozzle tip lower end cylinder is inserted into the pump housing, and oil spout both sides of head is carried on the pump housing by convex shoulder, described
Convex shoulder is fixedly connected by stud, bolt and gasket and the pump housing；The main shaft is connected in the pump housing by the bearing at both ends
Side bottom has been connected by key several cams on the main shaft, and the cam is correspondingly arranged in below corresponding nozzle tip, feature
Be: the nozzle tip lower end cylinder outside screw is connected with adjusting gear ring, is connected with the spring seat of honour on the outside of the adjusting gear ring；
Spring seat of honour lower end is correspondingly arranged on spring lower seat and sliding sleeve, and the sliding sleeve is slidably connected in the pump housing, and sliding sleeve passes through pump
The positioning screw of body side is limited, and a tappet body is rotatably connected in the sliding sleeve；The spring lower seat is connected in sliding sleeve
Upper end, spring lower seat centre position are connect with plunger lower end；A column is provided between the spring seat of honour and spring lower seat
Fill in spring.
2. a kind of enhanced type injection pump according to claim 1, it is characterised in that: the nozzle tip is 12, nozzle tip
Distance is 40mm between axis.
3. a kind of enhanced type injection pump according to claim 1, it is characterised in that: the plunger spring section is oblate
Shape.
4. a kind of enhanced type injection pump according to claim 1, it is characterised in that: set between the spring seat of honour and the pump housing
Set " O " type sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920369650.1U CN209687637U (en) | 2019-03-22 | 2019-03-22 | A kind of enhanced type injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920369650.1U CN209687637U (en) | 2019-03-22 | 2019-03-22 | A kind of enhanced type injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209687637U true CN209687637U (en) | 2019-11-26 |
Family
ID=68605726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920369650.1U Expired - Fee Related CN209687637U (en) | 2019-03-22 | 2019-03-22 | A kind of enhanced type injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209687637U (en) |
-
2019
- 2019-03-22 CN CN201920369650.1U patent/CN209687637U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191126 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |