CN220979729U - Flat-bottom supporting body fuel injection pump - Google Patents
Flat-bottom supporting body fuel injection pump Download PDFInfo
- Publication number
- CN220979729U CN220979729U CN202322833992.3U CN202322833992U CN220979729U CN 220979729 U CN220979729 U CN 220979729U CN 202322833992 U CN202322833992 U CN 202322833992U CN 220979729 U CN220979729 U CN 220979729U
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- Prior art keywords
- oil
- pump
- plunger
- fuel injection
- pump body
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- 238000002347 injection Methods 0.000 title claims abstract description 34
- 239000007924 injection Substances 0.000 title claims abstract description 34
- 239000000446 fuel Substances 0.000 title claims description 17
- 241001478750 Chlorophytum comosum Species 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims description 8
- 239000004449 solid propellant Substances 0.000 claims 9
- 241000755726 Chlorophytum Species 0.000 claims 3
- 238000005457 optimization Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 78
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000010687 lubricating oil Substances 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
- 239000007787 solid Substances 0.000 description 1
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- Fuel-Injection Apparatus (AREA)
Abstract
The utility model provides a flat-bottom supporting body oil injection pump which comprises a pump body and a supporting body, wherein two groups of guide holes are formed in the pump body, a chlorophytum comosum type plunger sleeve is arranged in the guide holes, an oil inlet screw hole is formed in one side of the pump body, an oil return screw hole is formed in the other side of the pump body, a choke plug is arranged in the oil return screw hole, an oil cavity is formed between the inner wall of the pump body and the outer wall of the chlorophytum comosum type plunger sleeve and between the inner wall of the pump body and the outer wall of the choke plug, and the supporting body is arranged below the guide holes; the utility model adopts the integral chlorophytum comosum type plunger, increases the strength of the chlorophytum comosum type plunger sleeve, can ensure that the oil pump provides higher allowable pump end pressure, and can promote the optimization of the service power and the performance of the oil injection pump.
Description
Technical Field
The utility model relates to the field of diesel engine fuel systems, in particular to an electric control fuel injection pump structure for on-off fuel.
Background
According to market demand, the structural function of single cylinder machine and two jar machines is optimizing and improving, makes its promotion power, optimizes performance, because two jar machines demand is vigorous, and the market needs to have a lot of models, consequently put forward multiple requirement to the oil pump, in order to satisfy two jar machine's operation requirement, need the oil pump that can automatically controlled fuel cut off, current oil pump adopts components of a whole that can function independently wall-hanging plunger pair more, but because plunger sleeve intensity is low, can lead to the oil pump oil spout pressure to receive the restriction.
Therefore, there is a need to develop a flat bottom, solid body fuel injection pump.
Disclosure of utility model
The utility model provides a flat-bottom supporting body fuel injection pump to solve the problems.
In order to achieve the above object, an embodiment of the present utility model provides a flat-bottom tappet fuel injection pump, including: the novel hydraulic pump comprises a pump body and a tappet body, wherein two groups of guide holes are formed in the pump body, a hanging basket type plunger sleeve is arranged in the guide holes, the part of the hanging basket type plunger sleeve extends to the outside of the pump body, an oil inlet screw hole is formed in one side of the pump body, an oil return screw hole is formed in the other side of the pump body, a choke plug is arranged in the oil return screw hole, an oil cavity is formed by the inner wall of the pump body, the outer wall of the hanging basket type plunger sleeve and the outer wall of the choke plug, the tappet body is arranged below the guide holes, a spring lower seat is arranged in the pump body above the tappet body, a plunger body is arranged on the top surface of the spring lower seat, a plunger spring is sleeved on the plunger body, a tight seat is arranged at the connecting position of the plunger body and the top surface of the pump body, an oil outlet valve spring is arranged between the tight seat and the top of the plunger body, an oil quantity sleeve is sleeved on the surface of the plunger body, and a plunger flat position is arranged on the plunger body in the oil quantity sleeve.
Further, a step body is arranged in the supporting body, a step surface is arranged at the edge position of the bottom surface of the supporting body, a limit screw hole is formed in the bottom of the pump body, a limit screw is arranged in the limit screw hole, and the limit screw abuts against the step surface.
Further, the mounting flange is sleeved on the surface of the chlorophytum comosum type plunger sleeve, two waist-shaped holes are formed in the mounting flange, a stud is arranged in each waist-shaped hole, and a nut is sleeved on the surface of each stud
The mounting grooves are formed in the chlorophytum comosum type plunger sleeve, a single sealing ring is arranged in the mounting groove at the top of the chlorophytum comosum type plunger sleeve, and a double sealing ring is arranged in the mounting groove at the bottom of the chlorophytum comosum type plunger sleeve.
Further, a control rod is arranged on one side of the oil mass sleeve, and part of the control rod extends to the outside of the pump body.
Further, a valve seat is arranged on one side of the oil inlet screw hole, an electromagnetic valve body is arranged on the valve seat, an electromagnetic valve core is arranged in the electromagnetic valve body, an oil inlet channel is arranged between the oil inlet screw hole and the valve seat, and the oil inlet channel is communicated with the oil cavity.
Further, a bleed screw hole is formed above the oil return screw hole, and a bleed screw is arranged in the bleed screw hole.
Further, a flange plate is sleeved on the surface of the pump body, and four positioning holes and two pin holes are formed in the flange plate.
Further, a plurality of step holes are formed in the guide hole.
Further, the pump body and the chlorophytum comosum type plunger sleeve are provided with oil inlet holes.
Further, a plurality of oil drain holes are formed in the side wall of the pump body.
Compared with the prior art, the embodiment of the utility model has the following beneficial effects:
The integral chlorophytum comosum type plunger is adopted, so that the strength of the chlorophytum comosum type plunger sleeve is increased, the oil pump can provide higher allowable pump end pressure, and the use power and the performance of the oil injection pump can be improved;
By arranging the limit screw, the tappet body is prevented from being separated from the pump body, and the flat position of the plunger is prevented from being separated from the middle hole of the oil mass sleeve;
Through setting up waist formula hole, can make the plunger sleeve of chlorophytum comosum rotate certain angle, be used for adjusting two jar injection quantity, make the injection quantity of two jars even.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a schematic diagram showing a cross-sectional front view of an injection pump according to the present utility model;
FIG. 2 is a schematic side sectional view of an injection pump according to the present utility model;
FIG. 3 is a schematic top view of the fuel injection pump of the present utility model;
FIG. 4 is a schematic view of the bottom view of the fuel injection pump of the present utility model;
FIG. 5 is a cross-sectional view of a most advantageous embodiment of the pump body of the present utility model;
FIG. 6 is a schematic view of the pump body of the present utility model in a bottom view;
FIG. 7 is a schematic elevational view of the plunger sleeve of the present utility model;
FIG. 8 is a schematic view of the bottom view of the plunger sleeve of the present utility model;
Fig. 9 is a schematic cross-sectional elevation view of a body hold out of the present utility model.
Wherein, 1, prop up the body; 2. a spring lower seat; 3. a plunger spring; 4. a plunger body; 5. an oil amount sleeve; 6. a chlorophytum comosum plunger sleeve; 7. a double seal ring; 8. a pump body; 9. a choke plug; 10. a bleeder screw; 11. a single seal ring; 12. an oil outlet valve; 13. a tightening seat; 14. an oil valve spring; 15. an electromagnetic valve core; 16. an electromagnetic valve body; 17. a valve seat; 18. an oil inlet channel; 19. a limit screw; 20. an oil chamber; 21. a nut; 22. a stud; 23. a control lever; 24. an oil drain hole; 25. oil return screw holes; 26. a gas discharge screw hole; 27. a guide hole; 28. an oil inlet screw hole; 29. a step hole; 30. a pin hole; 31. positioning holes; 32. limiting screw holes; 33. an oil inlet hole; 34. a mounting groove; 35. a waist-shaped hole; 36. a mounting flange; 37. a step body; 38. a step surface; 39. flat plunger.
Detailed Description
The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.
Referring to fig. 1 to 9, the present utility model provides a flat-bottom tappet fuel injection pump, comprising: the novel hydraulic pump comprises a pump body 8 and a tappet body 1, wherein two groups of guide holes 27 are formed in the pump body 8, an chlorophytum comosum type plunger sleeve 6 is arranged in the guide holes 27, a portion of the chlorophytum comosum type plunger sleeve 6 extends to the outside of the pump body 8, an oil inlet screw hole 28 is formed in one side of the pump body 8, an oil return screw hole 25 is formed in the other side of the pump body 8, an air release screw hole 26 is formed in the upper side of the oil return screw hole 25, and an air release screw 10 is arranged in the air release screw hole 26, so that air in an oil cavity 20 can be conveniently discharged. The choke plug 9 is arranged in the oil return screw hole 25, an oil cavity 20 is formed by the inner wall of the pump body 8, the outer wall of the chlorophytum comosum plunger sleeve 6 and the outer wall of the choke plug 9, namely, the oil cavity 20 is formed by the pump body 8, the chlorophytum comosum plunger sleeve 6 and the choke plug 9 in a surrounding mode, a hold out body 1 is arranged below the guide hole 27, a step body 37 is arranged in the tappet body 1, a step surface 38 is arranged at the edge position of the bottom surface of the tappet body 1, a limit screw hole 32 is arranged at the bottom of the pump body 8, a limit screw 19 is arranged in the limit screw hole 32, and the limit screw 19 is propped against the step surface 38. Specifically, this injection pump is two jars and arranges side by side, and whole chlorophytum comosum plunger 6, and the plane is very much 1, simultaneously in order to prevent very much 1 and the pump body 8 break away from, is provided with stop screw 19 on the pump body 8, and the control very much 1 can remove the biggest position in the pump body 8, that is to say, stop screw 32 department is provided with stop screw 19, and when the oil pump is under the free state, stop screw 19 keeps off on step face 38, can stop very much 1 break away from the pump body 8, prevents simultaneously that plunger flat 39 from deviating from the mesopore of oil mass sleeve 5.
The electromagnetic valve body 16 is arranged on one side of the oil inlet screw hole 28, the electromagnetic valve body 16 is arranged on the valve seat 17, the electromagnetic valve core 15 is arranged in the electromagnetic valve body 16, the oil inlet channel 18 is arranged between the oil inlet screw hole 28 and the valve seat 17 and is communicated with the oil cavity 20, the electromagnetic valve body 16 is particularly arranged on the valve seat 17, the electromagnetic valve core 15 is embedded in a hole in the electromagnetic valve body 16 and can axially move in the hole, when the electromagnetic valve body 16 is electrified, the electromagnetic valve core 15 is lifted by suction, the oil inlet channel 18 can be communicated with an external oil way and is used for oil inlet, and when the electromagnetic valve core 15 falls down, the oil inlet channel 18 is blocked from being communicated with the external oil way, and the non-uniformity of two cylinders caused by oil pressure fluctuation can be reduced.
The surface of the pump body 8 is sleeved with a flange plate, and four positioning holes 31 and two pin holes 30 are formed in the flange plate. A plurality of stepped holes 29 are provided in the guide hole 27. It should be further noted that the diameter of the lowest stepped hole 29 is the largest, and the oil inlet hole 33 is provided on the pump body 8 and the chlorophytum comosum type plunger sleeve 6. The side wall of the pump body 8 is provided with a plurality of oil drain holes 24, and the oil drain holes 24 are used for reducing the obstruction of engine lubricating oil when the tappet body 1 runs.
The hydraulic oil pump is characterized in that a spring lower seat 2 is arranged in the pump body 8 above the tappet body 1, a plunger body 4 is arranged on the top surface of the spring lower seat 2, a plunger spring 3 is sleeved on the plunger body 4, an oil outlet valve 12 is arranged between the plunger body 4 and the top surface of the pump body 8, an oil valve spring 14 is sleeved on the top of the oil outlet valve 12, an oil quantity sleeve 5 is sleeved on the surface of the plunger body 4, a plunger flat position 39 is arranged on the plunger body 4 in the oil quantity sleeve 5, a control rod 23 is arranged on one side of the oil quantity sleeve 5, and part of the control rod 23 extends to the outside of the pump body 8. It should be further noted that the control lever 23 may rotate the oil sleeve 5 and drive the plunger body 4 to rotate, so as to change the oil stroke of the plunger body 4 to control the oil injection amount.
When the tappet body 1 moves upwards, the spring lower seat 2 and the plunger body 4 are pushed to move upwards, meanwhile, the plunger spring 3 is compressed, the volume of a containing cavity at the upper part of the plunger body 4 is reduced, fuel in the containing cavity is compressed, the pressure is increased, when the pressure can overcome the pretightening force of the oil outlet valve spring 14 acting on the oil outlet valve 12, the oil outlet valve 12 is opened, the fuel is sprayed out from a middle hole of the tight seat 13, thus, one oil injection is completed, preparation is made for next oil injection, the tappet body 1 moves downwards, and the plunger body 4 and the spring lower seat 2 move downwards together with the tappet body 1 under the action of the plunger spring 3. In the working process, the electromagnetic valve body 16 is always electrified, the electromagnetic valve core 15 is attracted, fuel can continuously flow into the oil cavity 20 of the oil pump through the oil inlet channel 18, and then flow into the upper cavity of the plunger through the oil inlet hole 33, so that preparation is made for next oil injection.
The mounting flange 36 is sleeved on the surface of the chlorophytum comosum type plunger sleeve 6, two waist-shaped holes 35 are formed in the mounting flange 36, studs 22 are arranged in the waist-shaped holes 35, and nuts 21 are sleeved on the surface of the studs 22. It should be further explained that the chlorophytum comosum type plunger sleeve 6 is installed in the middle guide hole 27 of the pump body 8 and is fixed by the stud 22 and the nut 21, and the chlorophytum comosum type plunger sleeve 6 is provided with a waist-shaped hole 35, which can enable the chlorophytum comosum type plunger sleeve 6 to rotate a certain angle for adjusting the oil injection quantity of two cylinders and enabling the oil injection quantity of the two cylinders to be uniform
The mounting grooves 34 are formed in the chlorophytum comosum type plunger sleeve 6, the single sealing ring 11 is arranged in the mounting groove 34 at the top of the chlorophytum comosum type plunger sleeve 6, the double sealing ring 7 is arranged in the mounting groove 34 at the bottom of the chlorophytum comosum type plunger sleeve 6, and the single sealing ring 11 and the double sealing ring 7 can ensure that fuel cannot leak.
In summary, the beneficial effects of the utility model are as follows: by adopting the integral chlorophytum comosum type plunger 6, the strength of the chlorophytum comosum type plunger sleeve 6 is increased, so that the oil pump can provide higher allowable pump end pressure, and the use power and the performance of the oil injection pump can be improved.
With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (10)
1. A flat bottom, tappet fuel injection pump, comprising: the utility model provides a pump body (8) and prop body (1), be provided with two sets of guiding holes (27) in pump body (8), be provided with in guiding hole (27) chlorophytum type plunger sleeve (6), the part of chlorophytum type plunger sleeve (6) stretches to the outside of pump body (8), one side of pump body (8) is provided with oil feed screw (28), and the opposite side is provided with oil return screw (25) be provided with bulkhead (9) in oil return screw (25), pump body (8) inner wall with the outer wall of chlorophytum type plunger sleeve (6) and the outer wall of bulkhead (9) forms oil pocket (20), the below of guiding hole (27) is provided with and props body (1), be provided with spring lower seat (2) in pump body (8) of jack body (1) top, the top of spring lower seat (2) is provided with plunger body (4) the cover is equipped with plunger spring (3) on plunger body (4), plunger body (4) top surface (8) and be provided with plug body (13) and plunger valve (12) top (13) are equipped with between plunger sleeve (4), a plunger flat position (39) is arranged on the plunger body (4) in the oil mass sleeve (5).
2. The flat bottom, solid fuel injection pump of claim 1, wherein: the novel hydraulic pump is characterized in that a step body (37) is arranged in the supporting body (1), a step surface (38) is arranged at the edge position of the bottom surface of the supporting body (1), a limit screw hole (32) is formed in the bottom of the pump body (8), a limit screw (19) is arranged in the limit screw hole (32), and the limit screw (19) abuts against the step surface (38).
3. A flat bottom, solid fuel injection pump as claimed in claim 2 wherein: the surface of the chlorophytum comosum type plunger sleeve (6) is sleeved with a mounting flange (36), two waist-shaped holes (35) are formed in the mounting flange (36), studs (22) are arranged in the waist-shaped holes (35), nuts (21) are sleeved on the surface of the studs (22),
A plurality of mounting grooves (34) are formed in the chlorophytum comosum type plunger sleeve (6), a single sealing ring (11) is arranged in the mounting groove (34) at the top of the chlorophytum comosum type plunger sleeve (6), and a double sealing ring (7) is arranged in the mounting groove (34) at the bottom of the chlorophytum comosum type plunger sleeve (6).
4. A flat bottom, solid fuel injection pump as claimed in claim 3 wherein: one side of the oil mass sleeve (5) is provided with a control rod (23), and part of the control rod (23) extends to the outside of the pump body (8).
5. The flat bottom, solid fuel injection pump of claim 4 wherein: one side of oil inlet screw hole (28) is provided with disk seat (17) install solenoid valve body (16) on disk seat (17), be provided with solenoid valve core (15) in solenoid valve body (16), oil inlet screw hole (28) with be provided with between disk seat (17) into oil channel (18), go into oil channel (18) with oil pocket (20) intercommunication.
6. The flat bottom, solid fuel injection pump of claim 5, wherein: a deflation screw hole (26) is formed above the oil return screw hole (25), and a deflation screw (10) is arranged in the deflation screw hole (26).
7. The flat bottom, solid fuel injection pump of claim 6, wherein: the surface of the pump body (8) is sleeved with a flange plate, and four positioning holes (31) and two pin holes (30) are formed in the flange plate.
8. The flat bottom, solid fuel injection pump of claim 7, wherein: a plurality of step holes (29) are formed in the guide hole (27).
9. The flat bottom, solid fuel injection pump of claim 8, wherein: and oil inlet holes (33) are formed in the pump body (8) and the chlorophytum comosum type plunger sleeve (6).
10. The flat bottom, solid fuel injection pump of claim 9, wherein: a plurality of oil drain holes (24) are formed in the side wall of the pump body (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322833992.3U CN220979729U (en) | 2023-10-23 | 2023-10-23 | Flat-bottom supporting body fuel injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322833992.3U CN220979729U (en) | 2023-10-23 | 2023-10-23 | Flat-bottom supporting body fuel injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220979729U true CN220979729U (en) | 2024-05-17 |
Family
ID=91066215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322833992.3U Active CN220979729U (en) | 2023-10-23 | 2023-10-23 | Flat-bottom supporting body fuel injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220979729U (en) |
-
2023
- 2023-10-23 CN CN202322833992.3U patent/CN220979729U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |