CN214577480U - Oil valve plunger assembly and high-pressure oil pump - Google Patents
Oil valve plunger assembly and high-pressure oil pump Download PDFInfo
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- CN214577480U CN214577480U CN202120464923.8U CN202120464923U CN214577480U CN 214577480 U CN214577480 U CN 214577480U CN 202120464923 U CN202120464923 U CN 202120464923U CN 214577480 U CN214577480 U CN 214577480U
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Abstract
The utility model discloses an oil valve plunger assembly, including plunger bushing, plunger, oil feed valve seat, tight cap of accuse oil valve, it has first oil feed passageway to open on the plunger bushing, the plunger slides and sets up in the lower part of plunger bushing, tight cap of accuse oil valve and oil feed valve seat are installed from last to down on the plunger bushing in proper order, form plunger volume chamber between plunger and the oil feed valve seat lower extreme; the oil inlet valve seat is provided with a second oil inlet channel and a communication channel, and an inlet of the second oil inlet channel is communicated with an outlet of the first oil inlet channel; an oil inlet valve volume cavity and an oil outlet valve volume cavity which are communicated are arranged on the oil control valve tightening cap, a first one-way ball valve is arranged in the oil inlet valve volume cavity and controls the opening or closing of an outlet of a second oil inlet channel, a second one-way ball valve is arranged in the oil outlet valve volume cavity and is used for controlling the opening or closing of an inlet of the oil outlet valve volume cavity; the volume cavity of the oil inlet valve is communicated with the volume cavity of the plunger through a communication channel.
Description
Technical Field
The utility model relates to a high-pressure oil pump technical field especially relates to an oil valve plunger subassembly and high-pressure oil pump.
Background
In order to reduce the emission of the diesel engine, the electric control fuel injection technology is widely applied, so that more optimization requirements are provided for a fuel injection system of the diesel engine, and the problems of high processing difficulty and high cost of products are solved in the application environment of road and non-road machines on the basis of the original road and meeting use.
In present high-pressure oil pump, adopt the mode that inlet valve and delivery valve are separately usually, install respectively in the different positions of plunger part, inconvenient maintenance and change, even adopt the mode of two oil seats, inlet valve and delivery valve adopt the slide valve more and need assistance-localization real-time, or asymmetric structure oil circuit design, increase the cost of assembly and processing, the inhomogeneous side direction hydraulic pressure force that advances the oil return that asymmetric structure caused also can lead to the fact unfavorable influence to the annular gap between plunger and the plunger bushing, increase the fuel leakage volume of plunger matching parts, thereby lead to the plunger to become invalid.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides an aim at provides an oil valve plunger subassembly and high-pressure oil pump to solve current business turn over fuel tap and install inconvenient maintenance, the assembly is complicated, processing difficulty is with high costs and the high problem of product failure fault rate respectively.
According to a first aspect of the embodiments of the present invention, an oil valve plunger assembly is provided, which includes a plunger sleeve, a plunger, an oil inlet valve seat, and an oil control valve tightening cap, wherein the plunger sleeve is provided with a first oil inlet channel, the plunger is slidably disposed at a lower portion of the plunger sleeve, the oil control valve tightening cap and the oil inlet valve seat are sequentially mounted on the plunger sleeve from top to bottom, and a plunger volume cavity is formed between the plunger and a lower end of the oil inlet valve seat; the oil inlet valve seat is provided with a second oil inlet channel and a communication channel, and an inlet of the second oil inlet channel is communicated with an outlet of the first oil inlet channel; an oil inlet valve volume cavity and an oil outlet valve volume cavity which are communicated are arranged on the oil control valve tightening cap, a first one-way ball valve is arranged in the oil inlet valve volume cavity and used for controlling the opening or closing of an outlet of the second oil inlet channel, a second one-way ball valve is arranged in the oil outlet valve volume cavity and used for controlling the opening or closing of an inlet of the oil outlet valve volume cavity; the volume cavity of the oil inlet valve is communicated with the volume cavity of the plunger through the communication channel.
Further, an oil inlet volume cavity is formed by the side wall of the valve seat of the oil inlet valve and the side wall of the plunger sleeve, and the oil inlet volume cavity is communicated with the second oil inlet channel and the first oil inlet channel.
Furthermore, the first one-way ball valve comprises an oil inlet valve sealing steel ball and an oil inlet valve spring, one end of the oil inlet valve spring abuts against the inner wall of the volume cavity of the oil inlet valve, and the other end of the oil inlet valve spring abuts against the oil inlet valve sealing steel ball at the outlet of the second oil inlet channel.
Further, the first one-way ball valve further comprises an oil inlet valve spring seat, and the oil inlet valve spring is installed on the oil inlet valve spring seat.
Furthermore, the second one-way ball valve comprises an oil outlet valve sealing steel ball and an oil outlet valve spring, one end of the oil outlet valve spring is propped against the inner wall of the oil outlet valve volume cavity, and the other end part is used for propping the oil outlet valve sealing steel ball against the inlet end of the oil outlet valve volume cavity.
Further, the second one-way ball valve further comprises an oil outlet valve spring seat, and the oil outlet valve spring is installed on the oil outlet valve spring seat.
Further, the oil inlet valve seat is provided with a radial hole, an axial hole and a communication blind hole, the radial hole is communicated with the communication blind hole to form a second oil inlet channel, and the axial hole serves as a communication channel.
Further, the radial hole has a plurality of, and a plurality of this radial hole is evenly distributed along the circumferencial direction.
Further, the oil outlet valve spring seat is installed in the plunger sleeve through interference fit.
According to the utility model discloses the second aspect of the embodiment provides a high-pressure oil pump, including the first aspect the fuel tap plunger subassembly.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
according to the embodiment, the ball valves are adopted in the first one-way ball valve and the second one-way ball valve, the steel ball and the conical surface are sealed, the sealing performance is better after the sealing mode is used for a long time, the leakage risk can be reduced, mutual grinding of matching parts and parts can be avoided, the mutual exchange can not be realized, the roughness and the precision are high, and the processing cost is reduced.
The oil inlet valve seat is provided with a second oil inlet channel and a communicating channel, the inlet of the second oil inlet channel is communicated with the outlet of the first oil inlet channel, the first one-way ball valve is prevented from being influenced by uneven hydraulic flow and is opened stably, fuel oil enters the oil inlet valve volume cavity after the first one-way ball valve is opened and then enters the plunger volume cavity, the head of the plunger is uniformly stressed, and therefore the adverse influence of uneven lateral hydraulic pressure of inlet and return oil on an annular gap between the plunger and the plunger sleeve in similar products is avoided.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is to be expressly understood that the drawings in the following description are illustrative of specific embodiments only and are not intended as a definition of the limits of the invention. It is obvious to a person skilled in the art that other embodiments and drawings can of course be obtained from the following embodiments of the invention and their drawings without inventive work.
Fig. 1 is a schematic structural diagram of a plunger assembly of an oil valve according to an embodiment of the present invention, in which an oil inlet valve seat is a sectional view from a-a direction.
Fig. 2 is a schematic view of the volume chambers of an oil valve plunger assembly according to an embodiment of the present invention.
Figure 3 is according to utility model's an oil feed valve seat perspective schematic diagram of an embodiment.
Fig. 4 is a schematic view of the oil feed valve seat shaft according to an embodiment of the present invention.
Figure 5 is according to utility model's an oil feed valve seat schematic diagram that overlooks.
Figure 6 is according to utility model's an oil feed valve seat schematic view from the bottom.
Figure 7 is according to utility model's an oil feed valve seat left side view schematic diagram.
Fig. 8 is a schematic structural diagram of a plunger assembly of an oil valve according to an embodiment of the present invention, wherein the oil inlet valve seat is a B-B cross-sectional view.
Fig. 9 is a partially enlarged schematic view of C in fig. 8.
In the figure: plunger bushing 1, plunger 2, oil feed disk seat 3, inlet valve sealing steel ball 4, inlet valve spring 5, inlet valve spring seat 6, tight cap 7 of accuse fuel tap, outlet valve sealing steel ball 8, outlet valve spring 9, outlet valve spring seat 10, sealing washer 11, oil feed volume chamber 12, inlet valve volume chamber 13, outlet valve volume chamber 14, plunger volume chamber 15, first oil feed passageway 16, radial hole 301, axial hole 302, intercommunication blind hole 303.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one type of information from another.
Referring to fig. 1 and 2, an embodiment of the present invention provides an oil valve plunger assembly, including a plunger sleeve 1, a plunger 2, an oil inlet valve seat 3, and an oil control valve tightening cap 7, wherein a first oil inlet channel 16 is formed on the plunger sleeve 1, the plunger 2 is slidably disposed at a lower portion of the plunger sleeve 1, the oil control valve tightening cap 7 and the oil inlet valve seat 3 are sequentially mounted on the plunger sleeve 1 from top to bottom, and a plunger volume cavity 15 is formed between the plunger 2 and a lower end of the oil inlet valve seat 3; the oil inlet valve seat 3 is provided with a second oil inlet channel and a communication channel, and the inlet of the second oil inlet channel is communicated with the outlet of the first oil inlet channel 16; an oil inlet valve volume cavity 13 and an oil outlet valve volume cavity 14 which are communicated with each other are arranged on the oil control valve tightening cap 7, a first one-way ball valve is arranged in the oil inlet valve volume cavity 13 and controls the opening or closing of an outlet of the second oil inlet channel, a second one-way ball valve is arranged in the oil outlet valve volume cavity 14 and is used for controlling the opening or closing of an inlet of the oil outlet valve volume cavity 14; the oil inlet valve volume cavity 13 is communicated with the plunger volume cavity 15 through the communication channel.
In this embodiment, referring to fig. 1 and fig. 2, the inlet valve seat 3 is disposed in the plunger sleeve 1, one end of the inlet valve seat 3 is attached to and sealed with the end surface of the plunger sleeve 1, the other end of the inlet valve seat 3 is attached to and sealed with the end surface of the oil control valve locking cap 7, an inlet volume chamber 12 is formed between the sidewall of the inlet valve seat 3 and the sidewall of the plunger sleeve 1, and the inlet volume chamber 12 communicates with the second inlet passage and the first inlet passage 16.
In this embodiment, referring to fig. 1 and fig. 2, the first check ball valve includes an oil inlet valve sealing steel ball 4 and an oil inlet valve spring 5, one end of the oil inlet valve spring 5 abuts against the inner wall of the oil inlet valve volume cavity 13, and the other end of the oil inlet valve sealing steel ball 4 abuts against the outlet of the second oil inlet channel. Furthermore, the first one-way ball valve further comprises an oil inlet valve spring seat 6, the oil inlet valve spring 5 is sleeved on the oil inlet valve spring seat 6 and tightly pressed against a step platform of the oil inlet valve spring seat 7, and the oil inlet valve sealing steel ball 4 is tightly pressed at the other end, so that the oil inlet valve sealing steel ball 4 is attached to a sealing conical surface on the oil inlet valve seat 3. The oil inlet valve spring seat 6 plays a role in guiding and positioning the oil inlet valve spring 5 and reduces the volume of the oil inlet valve volume cavity 13, thereby being beneficial to ensuring the efficiency of the high-pressure oil pump assembly.
In this embodiment, referring to fig. 1 and 2, the second one-way ball valve includes an oil outlet valve sealing steel ball 8 and an oil outlet valve spring 9, one end of the oil outlet valve spring 9 abuts against the inner wall of the oil outlet valve volume chamber 14, and the other end part abuts against the oil outlet valve sealing steel ball 8 at the inlet end of the oil outlet valve volume chamber 14. Further, the second check ball valve still includes outlet valve spring seat 10, outlet valve spring 9 is installed on the outlet valve spring seat 10, outlet valve spring 9 one end supports and leans on outlet valve spring seat 10, and the other end compresses tightly outlet valve sealing steel ball 8, makes the laminating of the sealed conical surface on inlet valve sealing steel ball 4 and the tight cap 7 of accuse oil valve, and outlet valve spring seat 10 is fixed through interference and the tight cap 7 of accuse oil valve.
The first one-way ball valve and the second one-way ball valve are ball valves, and the form of sealing the steel ball and the conical surface is adopted, so that the sealing performance is better after the sealing form is used for a long time, the leakage risk can be reduced, the problems that parts are machined by matching parts and cannot be mutually ground and the roughness and the precision are high are solved, and the machining cost is reduced.
In this embodiment, referring to fig. 3 to 7, the oil inlet valve seat 3 is provided with a radial hole 301, an axial hole 302 and a communication blind hole 303, the radial hole 301 is communicated with the communication blind hole 303 to form a second oil inlet channel, and the axial hole 302 serves as a communication channel. Further, the radial holes 301 are plural, and the plural radial holes 301 are uniformly distributed in the circumferential direction. The fuel in the oil inlet volume cavity 12 is introduced into the axial hole 303 of the oil inlet valve seat 3 through the uniformly distributed lateral radial holes 301, after the oil inlet valve sealing steel ball 4 is opened, the fuel enters the oil inlet valve volume cavity 13 and is introduced into the plunger volume cavity 15 jointly formed by the plunger sleeve 1, the plunger 2 and the oil inlet valve seat 3 through the axial hole 302, and the uniformly distributed radial holes 301 and the uniformly distributed axial holes 302 can reduce uneven lateral hydraulic pressure, so that adverse effects of the uneven lateral hydraulic pressure of the oil inlet and return oil on an annular gap between the plunger and the plunger sleeve caused by an asymmetric structure in similar products are avoided.
In this embodiment, the outlet valve spring seat 10 is installed in the oil control valve locking cap 7 through interference fit to fix the outlet valve sealing steel ball 8 and the outlet valve spring 9 which are installed in the oil control valve locking cap 7 in advance, and prevent the outlet valve sealing steel ball 8 and the outlet valve spring 9 from falling in the subsequent assembling process.
In this embodiment, referring to fig. 1 and fig. 2, the oil control valve locking cap 7 is fixed to the plunger sleeve 1 through a threaded connection, and meanwhile, a high-pressure oil outlet joint is integrated at an oil outlet end of the oil control valve locking cap 7 and is used for connecting a high-pressure oil pipe. The integrated oil inlet volume cavity 13, the oil outlet volume cavity 14 and the high-pressure oil outlet joint of the oil control valve locking cap 7 are communicated by adopting a middle rotary structure, have no inclined hole or side hole, are simple in structure and are convenient to process.
In this embodiment, referring to fig. 1, the plunger sleeve 1 and the plunger 2 are matched by a coupling, and the oil control locking cap 7 and the plunger sleeve 1 are sealed by a sealing ring 11.
Referring to fig. 1-9, the embodiment of the present invention further provides a high-pressure oil pump, including the above-mentioned oil valve plunger assembly, the oil valve plunger assembly is installed in the installation hole of the high-pressure oil pump, and is fixed by a bolt. When the high-pressure oil pump works, the driving shaft reciprocates, the pressure of the oil inlet volume cavity 12 rises, the plunger 2 moves downwards, the oil inlet valve sealing steel ball 4 is opened under the action of the pressure in the oil inlet volume cavity 12, fuel enters the oil inlet valve volume cavity 13 through the radial holes 301 and the communicating blind holes 303 which are uniformly distributed on the oil inlet valve seat 3, the fuel enters the plunger volume cavity 15 through the axial holes 302 which are uniformly distributed on the oil inlet valve seat 3, the pressure of the oil inlet volume cavity falls, the oil inlet valve sealing steel ball 4 is closed under the action of the oil inlet valve spring 5, the oil outlet valve sealing steel ball 8 is in a closed state, the plunger 2 moves upwards, the fuel in the plunger volume cavity 15 returns to the oil inlet valve volume cavity 13 through the axial holes 302 which are uniformly distributed on the oil inlet valve seat 3, at the moment, the pressure of the oil inlet valve volume cavity 13 increases, the oil outlet valve sealing steel ball 8 is opened, the fuel flows out through the oil outlet valve volume cavity 14, the pressure of the oil inlet volume cavity 13 falls and is acted by the oil outlet valve spring 9, the outlet valve sealing steel ball 8 is closed, and a working cycle is completed.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. An oil valve plunger assembly is characterized by comprising a plunger sleeve, a plunger, an oil inlet valve seat and an oil control valve tightening cap, wherein a first oil inlet channel is formed in the plunger sleeve; the oil inlet valve seat is provided with a second oil inlet channel and a communication channel, and an inlet of the second oil inlet channel is communicated with an outlet of the first oil inlet channel; an oil inlet valve volume cavity and an oil outlet valve volume cavity which are communicated are arranged on the oil control valve tightening cap, a first one-way ball valve is arranged in the oil inlet valve volume cavity and used for controlling the opening or closing of an outlet of the second oil inlet channel, a second one-way ball valve is arranged in the oil outlet valve volume cavity and used for controlling the opening or closing of an inlet of the oil outlet valve volume cavity; the volume cavity of the oil inlet valve is communicated with the volume cavity of the plunger through the communication channel.
2. The oil valve plunger assembly of claim 1, wherein the inlet valve seat sidewall and the plunger sleeve sidewall form an inlet volume chamber, the inlet volume chamber communicating the second inlet passage and the first inlet passage.
3. The oil valve plunger assembly of claim 1, wherein the first check ball valve comprises an oil inlet valve sealing steel ball and an oil inlet valve spring, one end of the oil inlet valve spring abuts against the inner wall of the oil inlet valve volume cavity, and the other end of the oil inlet valve spring abuts against the oil inlet valve sealing steel ball at the outlet of the second oil inlet channel.
4. The oil valve plunger assembly of claim 1, wherein the first one-way ball valve further comprises an oil inlet valve spring seat, and the oil inlet valve spring is mounted on the oil inlet valve spring seat.
5. The oil valve plunger assembly of claim 1, wherein the second one-way ball valve comprises an oil outlet valve sealing steel ball and an oil outlet valve spring, one end of the oil outlet valve spring abuts against the inner wall of the oil outlet valve volume chamber, and the other end part abuts against the oil outlet valve sealing steel ball at the inlet end of the oil outlet valve volume chamber.
6. The oil valve plunger assembly of claim 1, wherein said second one-way ball valve further comprises an oil valve spring seat, said oil valve spring being mounted on said oil valve spring seat.
7. The oil valve plunger assembly of claim 1, wherein the oil inlet valve seat is provided with a radial hole, an axial hole and a communication blind hole, the radial hole is communicated with the communication blind hole to form a second oil inlet channel, and the axial hole is used as a communication channel.
8. The oil valve plunger assembly of claim 7, wherein said radial holes are a plurality of said radial holes, and wherein said plurality of said radial holes are circumferentially evenly distributed.
9. The oil valve plunger assembly of claim 6 wherein said oil valve spring seat is mounted in said plunger sleeve by interference fit.
10. A high pressure oil pump comprising the oil valve plunger assembly of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120464923.8U CN214577480U (en) | 2021-03-03 | 2021-03-03 | Oil valve plunger assembly and high-pressure oil pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120464923.8U CN214577480U (en) | 2021-03-03 | 2021-03-03 | Oil valve plunger assembly and high-pressure oil pump |
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| Publication Number | Publication Date |
|---|---|
| CN214577480U true CN214577480U (en) | 2021-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120464923.8U Active CN214577480U (en) | 2021-03-03 | 2021-03-03 | Oil valve plunger assembly and high-pressure oil pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901387A (en) * | 2021-03-03 | 2021-06-04 | 上海钧风电控科技有限公司 | Oil valve plunger assembly and high-pressure oil pump |
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2021
- 2021-03-03 CN CN202120464923.8U patent/CN214577480U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112901387A (en) * | 2021-03-03 | 2021-06-04 | 上海钧风电控科技有限公司 | Oil valve plunger assembly and high-pressure oil pump |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230608 Address after: 225500 No. 1, Shuguang Middle Road, Baimi Town, Jiangyan District, Taizhou City, Jiangsu Province Patentee after: Junfeng electric control technology (Taizhou) Co.,Ltd. Address before: Room 211, building 21, 1158 Jiuting Central Road, Jiuting Town, Songjiang District, Shanghai, 201615 Patentee before: Shanghai Junfeng Electric Control Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |