CN112780462B - Mechanism for adjusting advance angle of diesel pump and diesel pump - Google Patents
Mechanism for adjusting advance angle of diesel pump and diesel pump Download PDFInfo
- Publication number
- CN112780462B CN112780462B CN202011630717.6A CN202011630717A CN112780462B CN 112780462 B CN112780462 B CN 112780462B CN 202011630717 A CN202011630717 A CN 202011630717A CN 112780462 B CN112780462 B CN 112780462B
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- seat
- plunger
- plunger sleeve
- oil
- diesel pump
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/16—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by adjusting the capacity of dead spaces of working chambers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1087—Valve seats
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
- F04B53/162—Adaptations of cylinders
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention relates to the technical field of diesel pumps, in particular to a mechanism for adjusting the advance angle of a diesel pump, which comprises a plunger sleeve, a plunger sleeve seat and a nut, wherein the plunger sleeve is slidably arranged in the plunger sleeve seat, an axial gap is formed in the wall of the plunger sleeve seat, the nut is in threaded connection with the plunger sleeve seat, an annular groove is formed in the nut, a pin is fixedly arranged on the plunger sleeve and penetrates through the gap to be arranged in the annular groove, the nut moves up and down on the plunger sleeve seat to drive the pin and the plunger sleeve to move up and down, the advance angle is adjusted without replacing a gasket and assembling and disassembling an oil pump assembly, the damage to parts is reduced, the workload of workers is reduced, and the efficiency of adjusting the advance angle is improved.
Description
Technical Field
The invention relates to the technical field of diesel pumps, in particular to a mechanism for adjusting the advance angle of a diesel pump and the diesel pump.
Background
With the development of diesel engine technology, diesel engines are widely applied to general machinery, and in domestic markets, diesel engines are quite mature from technology to products and popular in domestic and foreign markets, mainly because the engine has the advantages of simple structure, stable performance, convenience in maintenance, high price and the like, but has some places which are not fully satisfactory. The advance angle adjustment of the oil supply of the diesel pump is usually to adjust the installation height of a diesel pump assembly, and the gasket is increased and reduced at the installation plane of the diesel pump assembly to adjust the advance angle of the diesel pump.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings in the prior art, solve the defect that the adjustment of the advance angle of the conventional diesel pump needs to repeatedly replace a gasket and disassemble and assemble an oil pump assembly, improve the adjustment efficiency of the advance angle of the diesel pump and provide a mechanism for adjusting the advance angle of the diesel pump and the diesel pump.
In order to achieve the above purpose, the invention provides the following technical scheme:
the utility model provides an adjust mechanism of diesel pump advance angle, includes plunger bushing, plunger cover seat and nut, the plunger bushing slides and sets up in the plunger cover seat, be provided with the ascending breach of axial on the wall of plunger cover seat, plunger cover seat external screw thread connection has the nut, be provided with the ring channel in the nut, be fixed with the pin on the plunger cover, the pin passes the breach sets up in the ring channel, the nut is in reciprocate on the plunger cover seat and drive the pin with the plunger bushing reciprocates.
As a preferable scheme of the invention, the nut is provided with two annular grooves which are arranged on the side surface of the nut, and the annular grooves of the two nuts are arranged in close proximity, so that the pin is conveniently installed in the annular groove of the nut.
As a preferable scheme of the invention, the plunger sleeve seat is provided with two notches, the plunger sleeve is fixed with two pins, the pins respectively penetrate through the notches, and the two pins are matched with the notches, so that the stability of driving the plunger sleeve to slide up and down is improved.
A diesel pump comprises the mechanism for adjusting the advance angle of the diesel pump, and further comprises an oil outlet valve tight seat and a plunger, wherein an oil outlet hole is formed in the oil outlet valve tight seat, an oil cavity is formed in the plunger sleeve, the oil outlet valve tight seat is fixed in the plunger sleeve, the oil outlet hole is communicated with the oil cavity, the plunger is arranged in the plunger sleeve in a sliding mode, a needle valve is arranged between the oil outlet valve tight seat and the plunger, the needle valve is communicated with/blocks the oil outlet hole and the oil cavity, an oil inlet hole is formed in the side face of the plunger sleeve, the oil inlet hole is formed between the plunger and the needle valve, the plunger sleeve seat is fixedly installed on an engine, when the advance angle of the diesel pump needs to be adjusted, a nut is rotated and moves up and down on the plunger sleeve seat, a pin is arranged in an annular groove of the nut, the nut drives the pin to move up and down, the pin drives the plunger sleeve to move up and down relative to the plunger sleeve seat, the size of an oil cavity between the plunger and the needle valve in the diesel pump can be changed, the advance angle is changed, the gasket is not replaced and the oil pump assembly is not disassembled and assembled any more when the advance angle is adjusted, the damage to parts is reduced, the workload of workers is reduced, and the efficiency of adjusting the advance angle is improved.
As a preferred scheme of the invention, a plunger sleeve seat plate is fixed below the plunger sleeve seat, an oil mass sleeve seat is fixed below the plunger sleeve seat plate, the oil mass sleeve seat is sleeved on the plunger sleeve, a spring seat is arranged at the lower end of the plunger, a spring is arranged on the plunger sleeve between the spring seat and the oil mass sleeve seat, two ends of the spring are respectively connected with the spring seat and the oil mass sleeve seat, and after the plunger moves upwards to compress fuel oil for oil injection, the plunger can slide downwards under the action of the spring, so that the fuel oil can continuously enter the plunger sleeve for next oil injection operation; the plunger bushing seat plate is convenient for the installation of the diesel pump.
As a preferable scheme of the invention, a needle valve seat is fixed in the plunger sleeve, the needle valve is arranged on the needle valve seat, the needle valve is also connected with a needle valve spring, the other end of the needle valve spring is connected with the oil outlet valve tight seat, the plunger compresses fuel oil at the lower part of the needle valve, the plunger continuously compresses to open the needle valve, the fuel oil quickly enters the oil outlet hole of the oil outlet valve tight seat to be sprayed out, after the fuel oil is sprayed out, the plunger moves downwards, the pressure in the cavity is reduced, and the needle valve is compressed back to the needle valve seat by the needle valve spring to cut off the communication between the oil outlet hole and the oil cavity.
As the preferable scheme of the invention, the plunger sleeve is hermetically connected with the oil outlet valve tight seat, and the needle valve seat is hermetically connected with the plunger sleeve, so that the leakage of fuel oil is avoided.
As the preferable scheme of the invention, a sealing ring is arranged between the plunger sleeve and the plunger sleeve seat, so that the leakage of fuel oil is avoided.
As a preferred scheme of the invention, the plunger sleeve seat is provided with two fuel oil through holes, the fuel oil through holes are communicated with the fuel oil inlet hole, the fuel oil through holes are connected with an oil inlet pipe, the size of the fuel oil through holes is larger than that of the fuel oil inlet hole, the fuel oil through holes and the fuel oil inlet hole are arranged between the sealing rings, and when the plunger sleeve slides in the plunger sleeve seat, the fuel oil inlet hole is always communicated with the fuel oil through holes to ensure that fuel oil enters the plunger sleeve.
Compared with the prior art, the invention has the beneficial effects that:
1. the plunger sleeve seat is fixedly installed on a diesel pump, when the advance angle of the diesel pump needs to be adjusted, the screw cap is rotated, the screw cap moves up and down on the plunger sleeve seat, the pin is arranged in the annular groove of the screw cap, the screw cap drives the pin to move up and down, the pin drives the plunger sleeve to move up and down relative to the plunger sleeve seat, the size of an oil cavity between a plunger and a needle valve in the diesel pump can be changed, the advance angle is changed, a gasket and a dismounting oil pump assembly are not replaced when the advance angle is adjusted, the damage of parts is reduced, the workload of workers is reduced, and the efficiency of adjusting the advance angle is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the nut of the present invention after being concealed;
FIG. 3 is a top view of the present invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is a cross-sectional view taken along line B-B of FIG. 3;
FIG. 6 is a schematic diagram of a plunger sleeve seat;
the labels in the figure are: 1-oil outlet valve tight seat, 2-plunger sleeve, 3-plunger sleeve seat, 4-plunger, 5-oil outlet, 6-oil cavity, 7-needle valve, 8-oil inlet, 9-notch, 10-nut, 11-annular groove, 12-pin, 13-plunger sleeve seat plate, 14-oil sleeve seat, 15-spring seat, 16-spring, 17-needle valve seat, 18-needle valve spring, 19-sealing ring, 20-fuel oil through hole, 21-oil inlet pipe.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
Example 1
As shown in fig. 1-6, a mechanism for adjusting an advance angle of a diesel pump includes a plunger sleeve 2, a plunger sleeve holder 3, and a nut 10, where the plunger sleeve 2 is slidably disposed in the plunger sleeve holder 3, an axial gap 9 is disposed on a wall of the plunger sleeve holder 3, the plunger sleeve holder 3 is externally screwed with the nut 10, an annular groove 11 is disposed in the nut 10, a pin 12 is fixed on the plunger sleeve 2, the pin 12 passes through the gap 9 and is disposed in the annular groove 11, and the nut 10 moves up and down on the plunger sleeve holder 3 to drive the pin 12 and the plunger sleeve 2 to move up and down.
As shown in fig. 4 and 5, the nut 10 is provided with two annular grooves 11, the annular grooves 11 are arranged on the side of the nut 10, and the two annular grooves 11 of the nut 10 are arranged in close proximity, so that the stud 12 is conveniently installed in the annular groove 11 of the nut 10.
As shown in fig. 4 and 5, the plunger sleeve seat 3 is provided with two notches 9, the plunger sleeve 2 is fixed with two pins 12, the pins 12 respectively penetrate through the notches 9, and the stability of driving the plunger sleeve 2 to slide up and down is improved due to the cooperation of the two pins 12 and the notches 9.
As shown in fig. 1-6, a diesel pump, including foretell mechanism of adjusting the diesel pump advance angle, still include tight seat 1 of delivery valve and plunger 4, be provided with oil outlet 5 on the tight seat 1 of delivery valve, be provided with oil pocket 6 on the plunger barrel 2, tight seat 1 of delivery valve is fixed in the plunger barrel 2, oil outlet 5 with oil pocket 6 intercommunication, plunger 4 slides and sets up in the plunger barrel 2, tight seat 1 of delivery valve with be provided with needle valve 7 between the plunger 4, needle valve 7 intercommunication/block oil outlet 5 with oil pocket 6, plunger barrel 2 side is provided with inlet port 8, inlet port 8 sets up plunger 4 with between the needle valve 7.
In this embodiment, a plunger bushing seat plate 13 is fixed below the plunger bushing seat 3, and the plunger bushing seat plate 13 facilitates installation of the diesel pump.
As shown in fig. 4 and 5, an oil sleeve seat 14 is fixed below the plunger sleeve seat plate 13, the oil sleeve seat 14 is sleeved on the plunger sleeve 2, a spring seat 15 is arranged at the lower end of the plunger 4, a spring 16 is sleeved on the plunger 4 between the spring seat 15 and the oil sleeve seat 14, two ends of the spring 16 are respectively connected with the spring seat 15 and the oil sleeve seat 14, and after the plunger 4 moves upwards to compress fuel oil for oil injection, the plunger 4 can slide downwards under the action of the spring 16, so that the fuel oil can continuously enter the plunger sleeve 2 for the next oil injection operation.
As shown in fig. 4 and 5, a needle valve seat 17 is fixed in the plunger sleeve 2, the needle valve 7 is arranged on the needle valve seat 17, the needle valve 7 is further connected with a needle valve spring 18, the other end of the needle valve spring 18 is connected with the oil outlet valve seat 1, the plunger 4 compresses fuel at the lower part of the needle valve 7, the plunger 4 continuously compresses to open the needle valve 7, the fuel rapidly enters the oil outlet hole 5 of the oil outlet valve seat 1 to be sprayed out, after the fuel is sprayed out, the plunger 4 moves downwards, the pressure in the cavity is reduced, and the needle valve 7 is pressed back to the needle valve seat 17 by the needle valve spring 18 to cut off the communication between the oil outlet hole 5 and the oil cavity 6.
In this embodiment, the plunger sleeve 2 and the tight seat 1 airtight connection of delivery valve, the needle valve seat 17 with the plunger sleeve 2 airtight connection avoids the fuel to reveal.
As shown in fig. 4 and 5, a sealing ring 19 is arranged between the plunger sleeve 2 and the plunger sleeve seat 3 to prevent fuel leakage.
As shown in fig. 5, the plunger sleeve seat 3 is provided with a fuel passing hole 20, the fuel passing hole 20 is communicated with the oil inlet hole 8, the fuel passing hole 20 is connected with an oil inlet pipe 21, the size of the fuel passing hole 20 is larger than that of the oil inlet hole 8, two sealing rings 19 are provided, the fuel passing hole 20 and the oil inlet hole 8 are both arranged between the sealing rings 19, and when the plunger sleeve 2 slides in the plunger sleeve seat 3, the oil inlet hole 8 is always communicated with the fuel passing hole 20, so that the fuel is ensured to enter the plunger sleeve 2.
The specific working process of the application is as follows: the plunger sleeve seat plate 13 is fixed on an engine, the oil inlet pipe 21 is communicated with an oil tank to work, when the advance angle of the diesel pump needs to be adjusted, the work is stopped, the screw cap 10 is rotated, the screw cap 10 rotates on the plunger sleeve seat 3 and moves up and down, the pin 12 is arranged in the annular groove 11 of the screw cap 10, the annular groove 11 avoids the rotation of the pin 12, the screw cap 10 moves up and down to drive the pin 12 to move up and down in the notch 9, the pin 12 drives the plunger sleeve 2 to slide up and down relative to the plunger sleeve seat 3, so that the size of an oil cavity between the plunger 4 and the evaporation 7 is changed, the advance angle is changed, the gasket and the oil pump assembly are not replaced when the advance angle is adjusted, the damage of parts is reduced, the workload of workers is reduced, and the efficiency of adjusting the advance angle is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The utility model provides a mechanism of adjusting diesel pump advance angle, its characterized in that includes plunger bushing (2), plunger sleeve seat (3) and nut (10), plunger bushing (2) slide to set up in plunger sleeve seat (3), be provided with axially ascending breach (9) on the wall of plunger sleeve seat (3), plunger sleeve seat (3) external screw thread connection has nut (10), be provided with ring channel (11) in nut (10), be fixed with pin (12) on plunger sleeve (2), pin (12) pass breach (9) set up in ring channel (11), nut (10) are in reciprocate on plunger sleeve seat (3) and drive pin (12) with plunger sleeve (2) reciprocate.
2. The mechanism for adjusting the advance angle of the diesel pump as claimed in claim 1, characterized in that the nut cap (10) is provided with two, the annular groove (11) is provided at the side of the nut cap (10), and the annular grooves (11) of the two nut caps (10) are arranged next to each other.
3. The mechanism for adjusting the advance angle of the diesel pump is characterized in that the plunger sleeve seat (3) is provided with two notches (9), the plunger sleeve (2) is fixed with two pins (12), and the pins (12) respectively penetrate through the notches (9).
4. A diesel pump, characterized in that, the mechanism for adjusting the advance angle of the diesel pump comprises the mechanism for adjusting the advance angle of the diesel pump as claimed in any one of claims 1 to 3, and also comprises an oil outlet valve fastening seat (1) and a plunger (4), an oil outlet hole (5) is arranged on the oil outlet valve tight seat (1), an oil cavity (6) is arranged on the plunger sleeve (2), the oil outlet valve tight seat (1) is fixed in the plunger sleeve (2), the oil outlet hole (5) is communicated with the oil cavity (6), the plunger (4) is arranged in the plunger sleeve (2) in a sliding way, a needle valve (7) is arranged between the oil outlet valve tight seat (1) and the plunger (4), the needle valve (7) is communicated/blocked with the oil outlet (5) and the oil chamber (6), and an oil inlet hole (8) is formed in the side surface of the plunger sleeve (2), and the oil inlet hole (8) is formed between the plunger (4) and the needle valve (7).
5. The diesel pump according to claim 4, characterized in that a plunger sleeve seat plate (13) is fixed below the plunger sleeve seat (3), an oil sleeve seat (14) is fixed below the plunger sleeve seat plate (13), the oil sleeve seat (14) is sleeved on the plunger sleeve (2), a spring seat (15) is arranged at the lower end of the plunger (4), a spring (16) is arranged on the plunger sleeve (2) between the spring seat (15) and the oil sleeve seat (14), and two ends of the spring (16) are respectively connected with the spring seat (15) and the oil sleeve seat (14).
6. The diesel pump according to claim 4, characterized in that a needle valve seat (17) is fixed in the plunger sleeve (2), the needle valve (7) is arranged on the needle valve seat (17), a needle valve spring (18) is further connected to the needle valve (7), and the other end of the needle valve spring (18) is connected with the oil outlet valve tight seat (1).
7. The diesel pump according to claim 6, characterized in that the plunger sleeve (2) is hermetically connected with the delivery valve tight seat (1), and the needle valve seat (17) is hermetically connected with the plunger sleeve (2).
8. The diesel pump according to claim 4, characterized in that a sealing ring (19) is arranged between the plunger sleeve (2) and the plunger sleeve seat (3).
9. The diesel pump according to claim 8, characterized in that a fuel through hole (20) is formed in the plunger sleeve seat (3), the fuel through hole (20) is communicated with the oil inlet hole (8), an oil inlet pipe (21) is connected to the fuel through hole (20), the size of the fuel through hole (20) is larger than that of the oil inlet hole (8), two sealing rings (19) are arranged, and the fuel through hole (20) and the oil inlet hole (8) are arranged between the two sealing rings (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011630717.6A CN112780462B (en) | 2020-12-31 | 2020-12-31 | Mechanism for adjusting advance angle of diesel pump and diesel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011630717.6A CN112780462B (en) | 2020-12-31 | 2020-12-31 | Mechanism for adjusting advance angle of diesel pump and diesel pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112780462A CN112780462A (en) | 2021-05-11 |
| CN112780462B true CN112780462B (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011630717.6A Active CN112780462B (en) | 2020-12-31 | 2020-12-31 | Mechanism for adjusting advance angle of diesel pump and diesel pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112780462B (en) |
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2020
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|---|---|
| CN112780462A (en) | 2021-05-11 |
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