CN204783403U - Take direct injection high pressure fuel pump of filter screen - Google Patents
Take direct injection high pressure fuel pump of filter screen Download PDFInfo
- Publication number
- CN204783403U CN204783403U CN201520522805.2U CN201520522805U CN204783403U CN 204783403 U CN204783403 U CN 204783403U CN 201520522805 U CN201520522805 U CN 201520522805U CN 204783403 U CN204783403 U CN 204783403U
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- China
- Prior art keywords
- seat
- filter screen
- oil duct
- stabilizing cavity
- pressure stabilizing
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Abstract
The utility model relates to a take direct injection high pressure fuel pump of filter screen, including the pump body, the pump body on be equipped with oil inlet, oil -out, the pump body in be equipped with pressure stabilizing cavity, first connection oil duct, second connection oil duct, be equipped with diaphragm assembly in the pressure stabilizing cavity, diaphragm assembly including last pressure seat, seat, diaphragm body push down, this body pressure of diaphragm establish at last pressure seat, push down between the seat, still be equipped with the filter screen in the pressure stabilizing cavity, the filter screen is pressed and is established the bottom at the pressure stabilizing cavity through pushing down the seat. The present invention uses the technical scheme, the utility model provides a take direct injection high pressure fuel pump of filter screen, the solid foreign particles in the fluid that prevents that it can be fine gets into in solenoid valve, the engine to guarantee solenoid valve, engine working property stably.
Description
Technical field
The utility model relates to a kind of in-cylinder direct-jet high pressure fuel pump with filter screen.
Background technique
Existing a kind of in-cylinder direct-jet high pressure fuel pump, include the pump housing, the described pump housing is provided with filler opening, oil outlet, pressure stabilizing cavity is provided with in the described pump housing, first connects oil duct, second connects oil duct, the top conducting of filler opening and pressure stabilizing cavity, the bottom conducting of the first connection oil duct and pressure stabilizing cavity, second connects oil duct and oil outlet conducting, diaphragm unit is provided with in described pressure stabilizing cavity, also include and to be connected oil duct with second to lead to for controlling the first connection oil duct, disconnected solenoid valve, the described pump housing is also provided with the pressing device for connecting the fluid press-in oil outlet in oil duct when closed electromagnetic valve by second, wherein, described diaphragm unit includes upper pressure seat, down pressing seat, diaphragm body, described diaphragm body is pressed on upper pressure seat, between down pressing seat, but, the in-cylinder direct-jet high pressure fuel pump of this structure, enter after in pressure stabilizing cavity from filler opening at fluid, in fluid, some solid impurity particles can enter the normal opening and closing affecting solenoid valve in solenoid valve, also have partial impurities particle can enter in generator from oil outlet, affect the performance of motor.
Summary of the invention
The purpose of this utility model: in order to overcome the defect of prior art, the utility model provides a kind of in-cylinder direct-jet high pressure fuel pump with filter screen, it can well prevent the solid impurity particle in fluid from entering in solenoid valve, motor, thus ensures that solenoid valve, function of the engine are stablized.
The technical solution of the utility model: a kind of in-cylinder direct-jet high pressure fuel pump with filter screen, include the pump housing, the described pump housing is provided with filler opening, oil outlet, pressure stabilizing cavity is provided with in the described pump housing, first connects oil duct, second connects oil duct, the top conducting of filler opening and pressure stabilizing cavity, the bottom conducting of the first connection oil duct and pressure stabilizing cavity, second connects oil duct and oil outlet conducting, diaphragm unit is provided with in described pressure stabilizing cavity, also include and to be connected oil duct with second to lead to for controlling the first connection oil duct, disconnected solenoid valve, the described pump housing is also provided with the pressing device for connecting the fluid press-in oil outlet in oil duct when closed electromagnetic valve by second, wherein, described diaphragm unit includes upper pressure seat, down pressing seat, diaphragm body, described diaphragm body is pressed on upper pressure seat, between down pressing seat, it is characterized in that: in described pressure stabilizing cavity, be also provided with filter screen, described filter screen is pressed on the bottom of pressure stabilizing cavity through down pressing seat.
Adopt technique scheme, by the filter screen arranged, it can well prevent the solid impurity particle in fluid from entering in solenoid valve, motor, thus ensures that solenoid valve, function of the engine are stablized.
Further setting of the present utility model: the bottom of described down pressing seat is curved is downwards provided with location piece, and described location piece is pressed on filter screen.
Adopt above-mentioned further setting, the filter screen orientation type of this structure, structure is simple, installation, convenient disassembly.
Setting further more of the present utility model: the circumferential side wall of described down pressing seat is upwards extended with some catch, and the circumferential side wall of described upper pressure seat, diaphragm body and the inwall of catch are conflicted.
Adopt and above-mentionedly to arrange further again, the catch of setting, can prevent upper pressure seat, produce relative offset between diaphragm body and down pressing seat, thus makes diaphragm unit service behaviour more stable.
Further setting of the present utility model: the described pump housing includes pedestal, feed cover, and described pressure stabilizing cavity is arranged between feed cover and pedestal, and solenoid valve, pressing device are arranged on pedestal, and described pedestal and feed cover are welded and fixed.
Adopt and above-mentionedly further to arrange, the pump housing set-up mode of this structure, can facilitate the installation of pressure stabilizing cavity interior diaphragm assembly, pedestal and feed cover is welded and fixed, and it is firm to locate.
Further setting of the present utility model: solenoid valve includes coil winding, valve seat, valve rod, spool and the first Returnning spring for the valve rod that resets, fixed core is provided with in described coil winding, valve core housing is located at valve rod upper end, spool and valve rod are linked, fixed core is positioned at spool upper end, valve seat is provided with the oil inlet hole being connected oil duct conducting with first, the oil outlet of oil duct conducting is connected with second, oil inlet hole, attachment hole is provided with between oil outlet, also steel ball is provided with below described valve rod, Compress Spring is provided with between described steel ball and seat bottom portion, the compressed spring of steel ball is pressed on valve rod lower end surface, described attachment hole lower end inner wall is provided with the sealing surface matched with steel ball outer wall.
Adopt and above-mentionedly further to arrange, only need steel ball to be directly placed on Compress Spring, be then against on steel ball by the lower end of valve rod, no matter how steel ball is placed, it all can be formed with the sealing surface of attachment hole and seal, and makes its installation very convenient like this.
Further setting of the present utility model: described pressing device includes push rod and the second Returnning spring for the push rod that resets, described push rod one end extends in the second connection oil duct, the other end extends to outside pedestal, one end that push rod extends to outside pedestal is provided with banking stop, pedestal is provided with spring seat, second Returnning spring is set on push rod, conflicts with spring seat, banking stop respectively in the second Returnning spring two ends.
Adopt and above-mentionedly further to arrange, the pressing device of this structure, directly pushed in the second connection oil duct by push rod and fluid is pressed into oil outlet, its structure is simple.
Accompanying drawing explanation
Fig. 1 is the external structure schematic diagram of the utility model specific embodiment;
Fig. 2 is the internal structure schematic diagram of the utility model specific embodiment;
Fig. 3 is I part partial enlarged drawing in Fig. 2;
Fig. 4 is diaphragm unit explosive view in the utility model specific embodiment.
Embodiment
As Figure 1-4, a kind of in-cylinder direct-jet high pressure fuel pump with filter screen, include the pump housing 1, the described pump housing 1 is provided with filler opening 2, oil outlet 3, pressure stabilizing cavity 4 is provided with in the described pump housing 1, first connects oil duct 5, second connects oil duct 6, the top conducting of filler opening 2 and pressure stabilizing cavity 4, the bottom conducting of the first connection oil duct 5 and pressure stabilizing cavity 4, second connects oil duct 6 and oil outlet 3 conducting, diaphragm unit 7 is provided with in described pressure stabilizing cavity 4, also include and to be connected oil duct 6 with second to lead to for controlling the first connection oil duct 5, disconnected solenoid valve 8, the described pump housing 1 is also provided with the pressing device 9 for connecting the fluid press-in oil outlet 3 in oil duct 6 by second when solenoid valve 8 cuts out, wherein, described diaphragm unit 7 includes upper pressure seat 71, down pressing seat 72, diaphragm body 73, described diaphragm body 73 is pressed on upper pressure seat 71, between down pressing seat 72, filter screen 74 is also provided with in described pressure stabilizing cavity 4, described filter screen 74 is pressed on the bottom of pressure stabilizing cavity 4 through down pressing seat 72, by the filter screen 74 arranged, it can well prevent the solid impurity particle in fluid from entering solenoid valve, in motor, thus guarantee solenoid valve, function of the engine is stablized.Wherein, the bottom of described down pressing seat 72 is curved is downwards provided with location piece 721, described location piece 721 is pressed on filter screen 74, the circumferential side wall of described down pressing seat 72 is upwards extended with some catch 722, the inwall of described upper pressure seat 71, the circumferential side wall of diaphragm body 73 and catch 722 is conflicted, the catch 722 arranged, can prevent upper pressure seat 71, produce relative offset between diaphragm body 73 and down pressing seat 72, thus make diaphragm unit service behaviour more stable.
In the utility model specific embodiment, the described pump housing 1 includes pedestal 11, feed cover 12, described pressure stabilizing cavity 4 is arranged between feed cover 12 and pedestal 11, and solenoid valve 8, pressing device 9 arrange on the base 11, and described pedestal 11 is welded and fixed with feed cover 12.The pump housing 1 set-up mode of this structure, can facilitate the installation of pressure stabilizing cavity 4 interior diaphragm assembly, and pedestal 11 and feed cover 12 are welded and fixed, it is firm to locate.
In the utility model specific embodiment, solenoid valve 8 includes coil winding 81, valve seat 82, valve rod 83, spool 84 and the first Returnning spring 85 for the valve rod 83 that resets, fixed core 86 is provided with in described coil winding 81, spool 84 is set in valve rod 83 upper end, spool 84 and valve rod 83 are linked, fixed core 86 is positioned at spool 84 upper end, valve seat 82 is provided with the oil inlet hole 821 being connected oil duct 5 conducting with first, the oil outlet 822 of oil duct 6 conducting is connected with second, oil inlet hole 821, attachment hole 823 is provided with between oil outlet 822, steel ball 87 is also provided with below described valve rod 83, Compress Spring 88 is provided with between bottom described steel ball 87 and valve seat 82, the compressed spring 88 of steel ball 87 is pressed on valve rod 83 lower end surface, described attachment hole 823 lower end inner wall is provided with the sealing surface 8231 matched with steel ball outer wall.So only need steel ball 87 to be directly placed on Compress Spring 88, be then against on steel ball by the lower end of valve rod 83, no matter how steel ball is placed, and it all can be formed with the sealing surface 8231 of attachment hole and seal, and makes its installation very convenient like this.
In the utility model specific embodiment, described pressing device 9 includes push rod 91 and the second Returnning spring 92 for the push rod 91 that resets, described push rod 91 one end extends in the second connection oil duct 6, the other end extends to outside pedestal 11, push rod 91 one end extended to outside pedestal 11 is provided with banking stop 93, pedestal 11 is provided with spring seat 94, and the second Returnning spring 92 is set on push rod 91, conflicts with spring seat 94, banking stop 93 respectively in the second Returnning spring 92 two ends.
Claims (6)
1. the in-cylinder direct-jet high pressure fuel pump with filter screen, include the pump housing, the described pump housing is provided with filler opening, oil outlet, pressure stabilizing cavity is provided with in the described pump housing, first connects oil duct, second connects oil duct, the top conducting of filler opening and pressure stabilizing cavity, the bottom conducting of the first connection oil duct and pressure stabilizing cavity, second connects oil duct and oil outlet conducting, diaphragm unit is provided with in described pressure stabilizing cavity, also include and to be connected oil duct with second to lead to for controlling the first connection oil duct, disconnected solenoid valve, the described pump housing is also provided with the pressing device for connecting the fluid press-in oil outlet in oil duct when closed electromagnetic valve by second, wherein, described diaphragm unit includes upper pressure seat, down pressing seat, diaphragm body, described diaphragm body is pressed on upper pressure seat, between down pressing seat, it is characterized in that: in described pressure stabilizing cavity, be also provided with filter screen, described filter screen is pressed on the bottom of pressure stabilizing cavity through down pressing seat.
2. the in-cylinder direct-jet high pressure fuel pump of band filter screen according to claim 1, is characterized in that: the bottom of described down pressing seat is curved is downwards provided with location piece, and described location piece is pressed on filter screen.
3. the in-cylinder direct-jet high pressure fuel pump of band filter screen according to claim 1 and 2, is characterized in that: the circumferential side wall of described down pressing seat is upwards extended with some catch, and the circumferential side wall of described upper pressure seat, diaphragm body and the inwall of catch are conflicted.
4. the in-cylinder direct-jet high pressure fuel pump of band filter screen according to claim 3, it is characterized in that: the described pump housing includes pedestal, feed cover, described pressure stabilizing cavity is arranged between feed cover and pedestal, solenoid valve, pressing device are arranged on pedestal, and described pedestal and feed cover are welded and fixed.
5. the in-cylinder direct-jet high pressure fuel pump of band filter screen according to claim 4, it is characterized in that: solenoid valve includes coil winding, valve seat, valve rod, spool and the first Returnning spring for the valve rod that resets, fixed core is provided with in described coil winding, valve core housing is located at valve rod upper end, spool and valve rod are linked, fixed core is positioned at spool upper end, valve seat is provided with the oil inlet hole being connected oil duct conducting with first, the oil outlet of oil duct conducting is connected with second, oil inlet hole, attachment hole is provided with between oil outlet, also steel ball is provided with below described valve rod, Compress Spring is provided with between described steel ball and seat bottom portion, the compressed spring of steel ball is pressed on valve rod lower end surface, described attachment hole lower end inner wall is provided with the sealing surface matched with steel ball outer wall.
6. the in-cylinder direct-jet high pressure fuel pump of band filter screen according to claim 4, it is characterized in that: described pressing device includes push rod and the second Returnning spring for the push rod that resets, described push rod one end extends in the second connection oil duct, the other end extends to outside pedestal, one end that push rod extends to outside pedestal is provided with banking stop, pedestal is provided with spring seat, and the second Returnning spring is set on push rod, conflicts with spring seat, banking stop respectively in the second Returnning spring two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520522805.2U CN204783403U (en) | 2015-07-17 | 2015-07-17 | Take direct injection high pressure fuel pump of filter screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520522805.2U CN204783403U (en) | 2015-07-17 | 2015-07-17 | Take direct injection high pressure fuel pump of filter screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204783403U true CN204783403U (en) | 2015-11-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520522805.2U Active CN204783403U (en) | 2015-07-17 | 2015-07-17 | Take direct injection high pressure fuel pump of filter screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204783403U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640459A (en) * | 2016-09-09 | 2017-05-10 | 广东意希诺科技有限公司 | Oil amount control valve with precision filter screen |
-
2015
- 2015-07-17 CN CN201520522805.2U patent/CN204783403U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640459A (en) * | 2016-09-09 | 2017-05-10 | 广东意希诺科技有限公司 | Oil amount control valve with precision filter screen |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |