CN208900778U - The automobile-used high pressure maintaining check valve of motor - Google Patents
The automobile-used high pressure maintaining check valve of motor Download PDFInfo
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- CN208900778U CN208900778U CN201821492797.1U CN201821492797U CN208900778U CN 208900778 U CN208900778 U CN 208900778U CN 201821492797 U CN201821492797 U CN 201821492797U CN 208900778 U CN208900778 U CN 208900778U
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- pressure spring
- installation cavity
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Abstract
The utility model discloses a kind of automobile-used high pressure maintaining check valves of motor, including valve body；The valve body includes the installation cavity for being provided with valve body front end；The rear end of valve body offers the oil outlet being connected to installation cavity；Installation sprue, core assembly and pressure spring are successively arranged in installation cavity from front to back；Oil inlet is offered on installation sprue；The core assembly includes core print seat, and is arranged on core print seat for blocking the elastic plug of oil inlet；The seal convexity of annular is formed on the front end face of elastic plug；Seal convexity can offset under the action of pressure spring with the rear end face of installation sprue.The technical solution of the utility model offsets to block hydraulic fluid port by the rear end of the seal convexity and installation sprue that are arranged on elastic plug, seal convexity is contacted with the front end of installation cavity to be soft, and contact area is big, and sealing performance and pressure maintaining performance are good, and structure is simple, easy to process and installation.
Description
Technical field
The utility model relates to motor-vehicle fuel pump fields, and in particular to a kind of automobile-used high pressure maintaining check valve of motor.
Background technique
Motor-vehicle fuel pump is a critically important components in motorcycle fuel supply system, wherein in fuel pump
Check valve can guarantee fuel oil one-way flow, and the pressure in fuel service system intermediate fuel oil pipeline can be guaranteed in a certain range
It is interior, so that engine fuel injector has enough pressure in oil spout.
Traditional motor one-way valve for controlling gas flow in vehicles is contacted with installation sprue in line using steel ball as sealed valve core.Its sealing performance
And pressure maintaining performance is poor.And the leakproofness of traditional check valve depends on the form accuracy and roughness of steel ball.It is single to guarantee
High to the required precision of steel ball to the leakproofness of valve, the processing of steel ball and installation difficulty are big.
Utility model content
The utility model provides a kind of automobile-used high pressure maintaining check valve of motor, has preferable sealing performance and pressure maintaining
Can, and structure is simple, easy to process and installation.
The technical solution of the utility model is as follows:
A kind of automobile-used high pressure maintaining check valve of motor, including valve body；The valve body includes the installation cavity for being provided with valve body front end；
The rear end of valve body offers the oil outlet being connected to installation cavity；Installation sprue, spool group are successively arranged in installation cavity from front to back
Part and pressure spring；Oil inlet is offered on installation sprue；The core assembly includes core print seat, and the bullet being arranged on core print seat
Property plug；The seal convexity of annular is formed on the front end face of elastic plug；Pressure spring effect under, seal convexity by with
Installation sprue seals the closure to be formed to the oil inlet that offsets.
The technical principle of the utility model is, when pump core electric power starting；Fuel oil enters the oil inlet on installation sprue, and
Push core assembly mobile toward fuel-displaced direction, pressure spring further compresses at this time, and elastic plug and installation sprue are detached from.Fuel oil
Via core assembly, the oil outlet opened up from valve casing flows out.After pump core power supply is closed, pressure spring pushes core assembly past
It is mobile that sprue direction is installed.The rear end face of seal convexity and installation sprue on elastic plug fits closely, and oil inlet is sealed.
Using the technical solution of the utility model, by the seal convexity being arranged on elastic plug and after sprue is installed
End offsets to block hydraulic fluid port, and seal convexity is contacted with the front end of installation cavity to be soft, and contact area is big, good seal performance；When
After pump core power supply is closed, the contact area of fuel oil and elastic plug is larger, is able to bear bigger pressure, can be improved pressure maintaining energy
Power, and pressure is stablized.And the structure of elastic plug is simple, easy to process and installation.
Preferably, the pressure spring is cone shaped spring, and the bigger diameter end of pressure spring and the bottom of installation cavity offset, and is adjusted
The miner diameter end of pressing spring offsets with core print seat.More stable in compression or stretching process using cone shaped spring, elasticity is stifled
The sealing performance of head is more preferable.
Preferably, the rear end face of the core print seat is equipped with installation protrusion, and the pressure spring is set in installation protrusion.It can
Prevent pressure spring from moving radially, stability is good.
The beneficial effects of the utility model are to have preferable sealing performance and pressure maintaining performance；Stable working, and structure letter
It is single, easy to process and assembly.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of the utility model.
Fig. 2 is the structural schematic diagram of core assembly.
In figure, valve body 1, installation cavity 1.1, oil outlet 1.2, installation sprue 2, oil inlet 2.1, elastic plug 3, seal convexity
3.1, core print seat 4, installation raised 4.1, pressure spring 5, sealing ring 6.
Specific embodiment
As shown in Figure 1 to Figure 2, the automobile-used high pressure maintaining check valve of a kind of motor, including valve body 1；The valve body 1 includes being provided with
The installation cavity 1.1 of 1 front end of valve body；The rear end of valve body 1 offers the oil outlet 1.2 being connected to installation cavity 1.1；In installation cavity 1.1
It is successively arranged installation sprue 2, core assembly and pressure spring 5 from front to back；Installation sprue 2 is embedded in the opening of installation cavity 1.1
Place；Oil inlet 2.1 is offered on installation sprue 2；The core assembly includes core print seat 4, and the elasticity being arranged on core print seat 4 is stifled
First 3；The seal convexity 3.1 of annular is formed on the front end face of elastic plug 3；Under the action of pressure spring 5, seal convexity
3.1 by sealing the closure to be formed to the oil inlet 2.1 that offsets with installation sprue 2.
Wherein, the 5 preferred conical spring of pressure spring, the bottom phase of the bigger diameter end and installation cavity 1.1 of pressure spring 5
It supports, miner diameter end and the core print seat 4 of pressure spring 5 offset.The elasticity plug 3 is made of fluorubber, and elasticity is good for fluorubber, and
The corrosion of methanol tolerant, ethanol petrol.Elastic plug 3 and core print seat 4 are offseted by circular conical surface, and the vertex of circular conical surface is far from installation sprue
2, and circular conical surface and oil inlet 2.1 are coaxial.Stability during the work time is good.Sealing is arranged on the installation sprue 2
Circle 6 can guarantee the leakproofness of the automobile-used high pressure maintaining check valve connection of motor.The rear end face of the core print seat 4 is equipped with installation protrusion
4.1, the pressure spring 5 is set in installation protrusion 4.1；It can prevent pressure spring 5 from moving radially.
The preferred embodiments of the present invention have been described in detail above.It should be appreciated that the ordinary skill people of this field
Member according to the present utility model can conceive without creative work makes many modifications and variations.Therefore, all this technology necks
Technical staff passes through logic analysis, reasoning or limited reality according to the design of the utility model on the basis of existing technology in domain
Available technical solution is tested, it all should be within the scope of protection determined by the claims.
Claims (3)
1. a kind of automobile-used high pressure maintaining check valve of motor, including valve body (1)；The valve body (1) includes being provided with valve body (1) front end
Installation cavity (1.1)；The rear end of valve body (1) offers the oil outlet (1.2) being connected to installation cavity (1.1)；In installation cavity (1.1) from
Front to back is successively arranged installation sprue (2), core assembly and pressure spring (5)；Oil inlet is offered in installation sprue (2)
(2.1)；It is characterized in that, the core assembly includes core print seat (4), and the elastic plug (3) being arranged on core print seat (4)；Bullet
Property plug (3) front end face on be formed with annular seal convexity (3.1)；Under pressure spring (5) effect, seal convexity
(3.1) by sealing the closure to be formed to the oil inlet (2.1) that offsets with installation sprue (2).
2. the automobile-used high pressure maintaining check valve of motor according to claim 1, which is characterized in that the pressure spring (5) is circle
The bottom of volute spring, the bigger diameter end and installation cavity (1.1) of pressure spring (5) offsets, the miner diameter end and core print seat of pressure spring (5)
(4) it offsets.
3. the automobile-used high pressure maintaining check valve of motor according to claim 1, which is characterized in that the rear end face of the core print seat (4)
Equipped with installing raised (4.1), the pressure spring (5) is set on installation raised (4.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821492797.1U CN208900778U (en) | 2018-09-12 | 2018-09-12 | The automobile-used high pressure maintaining check valve of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821492797.1U CN208900778U (en) | 2018-09-12 | 2018-09-12 | The automobile-used high pressure maintaining check valve of motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208900778U true CN208900778U (en) | 2019-05-24 |
Family
ID=66572065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821492797.1U Active CN208900778U (en) | 2018-09-12 | 2018-09-12 | The automobile-used high pressure maintaining check valve of motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208900778U (en) |
-
2018
- 2018-09-12 CN CN201821492797.1U patent/CN208900778U/en active Active
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