CN203594855U - Metering electromagnetic valve for common rail - Google Patents
Metering electromagnetic valve for common rail Download PDFInfo
- Publication number
- CN203594855U CN203594855U CN201320819477.3U CN201320819477U CN203594855U CN 203594855 U CN203594855 U CN 203594855U CN 201320819477 U CN201320819477 U CN 201320819477U CN 203594855 U CN203594855 U CN 203594855U
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- valve
- valve body
- barrel
- piston
- spool
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Abstract
The utility model discloses a metering electromagnetic valve for a common rail. The metering electromagnetic valve for the common rail comprises a valve body. A circle of oil inlet holes are formed in the outer circle of the valve body. A valve deck is arranged at the lower end of the valve body. An oil outlet hole is formed in the center of the valve deck. A drum-shaped piston is arranged inside the valve body. A spring is arranged inside the piston. A circumferential groove is formed in the outer circle of the piston. An ejector rod is arranged at the upper end of the valve rod. The lower end of the ejector rod abuts against the upper end of the piston. The upper end of the ejector rod is connected with an electromagnetic armature. A coil is arranged outside the electromagnetic armature. An outer shell is arranged outside the coil. The metering electromagnetic valve for the common rail is characterized in that a valve core is arranged on the inner wall of the valve body in a close fit mode, the lower end of the ejector rod penetrates through the top end of the valve core and then abuts against the upper end of the piston, an annular groove is formed in the outer circle of the valve core, and triangular holes are evenly distributed in the circumferential direction of the bottom of the annular groove and respectively communicated with an inner cavity of the valve core and the oil inlet holes in the valve body. The electromagnetic valve is long in service life; due to the adoption of the electromagnetic valve, the use cost can be reduced, and the metering electromagnetic valve is applicable to adjusting the flow of a high-pressure common rail system of a diesel engine.
Description
Technical field
The utility model relates to a kind of solenoid valve.Specifically, be the solenoid valve for regulating diesel engine high-pressure co-rail system fuel flow.
Background technique
At present, being used for regulating the solenoid valve of diesel engine high-pressure co-rail system fuel flow is all traditional electrical magnet valve, this traditional electrical magnet valve comprises valve body, described valve body is cylindric, the oil inlet hole that has a circle to be on its cylindrical to be evenly arranged and to be communicated with its inner chamber, there is valve gap its lower end, and there is oil outlet at valve gap center.In valve body, have and be the barrel-shaped piston that upside-down is arranged, in barrel-shaped piston, have spring, the upper and lower end of spring offsets with the bucket end and the valve gap of barrel-shaped piston respectively.On the cylindrical of barrel-shaped piston, there is circumferential recess, the circular hole being communicated with barrel-shaped piston cavity on the bottom land of circumferential recess.There is push rod valve body upper end, and push rod lower end withstands on the upper end of described drum.Push rod upper end is connected with electromagnet armature, and there is coil the outside of electromagnet armature, and there is shell coil outside, and described shell lower end is connected to the upper end surrounding of described valve body.Because described piston directly contacts with valve interior wall, after operation a period of time, the gap between piston and valve interior wall can increase, and leakage phenomenon occurs, and causes flow control not reach requirement.Once there is this situation, just whole solenoid valve must be scrapped to the solenoid valve more renewing.Therefore, the working life of above-mentioned solenoid valve is short, and user cost is high.
Model utility content
Problem to be solved in the utility model is to provide a kind of rail metering solenoid valve altogether.This solenoid valve, long service life.Adopt this battery valve, can reduce user cost.
For addressing the above problem, take following technological scheme:
Altogether rail of the present utility model comprises valve body with metering solenoid valve, and described valve body is cylindric, the oil inlet hole that has a circle to be on its cylindrical to be evenly arranged and to be communicated with its inner chamber, and there is valve gap its lower end, and there is oil outlet at valve gap center.In valve body, have and be the barrel-shaped piston that upside-down is arranged, in barrel-shaped piston, have spring, the upper and lower end of spring offsets with the bucket end and the valve gap of barrel-shaped piston respectively.On the cylindrical of barrel-shaped piston, there is circumferential recess, on the bottom land of circumferential recess, have the circular hole being communicated with barrel-shaped piston cavity.There is push rod valve body upper end, and push rod lower end withstands on the upper end of described barrel-shaped piston.Push rod upper end is connected with electromagnet armature, and there is coil the outside of electromagnet armature, and there is shell coil outside, and described shell lower end is connected to the upper end surrounding of described valve body.Be characterized in that valve interior wall tightens and is furnished with spool, described spool is for being inverted drum, and the lower end of described push rod withstands on described piston upper end through behind spool top.On the cylindrical of described spool, have the annular groove corresponding with oil inlet hole on valve body, the bottom land of annular groove is circumferentially evenly equipped with tri-angle-holed, and this is tri-angle-holed all communicates with the oil inlet hole on valve core cavity and valve body.
Further improvement of the utility model scheme is that the width of described circumferential recess is greater than described tri-angle-holed height.
Further improvement project of the present utility model is to have screw thread in described spool hypomere inner circle.
Adopt such scheme, have the following advantages:
As can be seen from the above scheme, owing to tightening and being furnished with spool at valve interior wall, make piston contact and not contact with valve interior wall with spool, after operation a period of time, increase, leak, cause flow control not reach requirement if there is the gap between piston and valve interior wall, only need to change spool, and do not need whole solenoid valve to scrap.Therefore, adopt solenoid valve of the present utility model, can greatly increase the service life, reduce user cost.
Accompanying drawing explanation
Fig. 1 is the metering of rail altogether electromagnetic valve structure schematic diagram of the present utility model;
Fig. 2 is the H place enlarged diagram of Fig. 1;
Fig. 3 is that the tri-angle-holed A of Fig. 2 is to schematic diagram.
Embodiment
As depicted in figs. 1 and 2, rail altogether of the present utility model comprises valve body 10 with metering solenoid valve, and described valve body 10 is cylindric, and it is upside-down arranges, i.e. Yu Qi top, its bottom.On valve body cylindrical, be processed with a circle oil inlet hole 10.1, this oil inlet hole 10.1 is communicated with body cavity and being circumferentially and being evenly arranged along valve body 10.Valve body 10 inwalls tighten is furnished with spool 9, and described spool 9, for being inverted drum, is processed with annular groove 9.1 on the cylindrical of described spool 9, and this annular groove 9.1 is corresponding with the oil inlet hole 10.1 on valve body 10.See Fig. 2 and Fig. 3, on the bottom land of annular groove 9.1, be processed with two tri-angle-holed 9.2, these two tri-angle-holed along spool 9 be radially positioned opposite, they all communicate with the oil inlet hole 10.1 on spool 9 inner chambers and valve body 10.Described tri-angle-holed 9.2 is isosceles triangle hole, and its drift angle and base are respectively adjacent to the top and bottom of spool 9.
The lower end of spool 9 is provided with valve gap 7, and valve gap 7 centers are processed with oil outlet 7.1, is tight shape and matches between the surrounding of valve gap 7 and spool 9 lower end inner circles.
In valve body 4, be provided with barrel-shaped piston 5, this barrel-shaped piston 5 is upside-down and arranges.In barrel-shaped piston 5, be provided with spring 6, the bucket end of the upper end of spring 6 and barrel-shaped piston, offsets, and the lower end of spring 6 and valve gap 7 offset.On the cylindrical of barrel-shaped piston 5, be processed with circumferential recess 5.1, the width of described circumferential recess 5.1 is greater than described tri-angle-holed 9.2 height.On the bottom land of circumferential recess 5.1, process two circular holes 5.2 that are communicated with barrel-shaped piston 5 inner chambers.
In that section of spool 9 inner circles on valve gap 7, be processed with screw thread 8, when the inner chamber of spool 9 overproof with coordinating of piston 5 and while there is leakage situation, detachable bottom flange, utilize described screw thread 8 to be screwed into a screw, and pull screw that spool 9 is extracted, the spool 9 more renewing, can make solenoid valve work on.
Claims (3)
1. one kind is total to rail metering solenoid valve, comprise valve body (10), described valve body (10) is cylindric, the oil inlet hole (10.1) that has a circle to be on its cylindrical to be evenly arranged and to be communicated with its inner chamber, there is valve gap (7) its lower end, and there is oil outlet (7.1) at valve gap (7) center; In valve body (4), have and be the barrel-shaped piston (5) that upside-down is arranged, have spring (6) in barrel-shaped piston (5), the upper and lower end of spring (6) offsets with the bucket end and the valve gap of barrel-shaped piston respectively; On the cylindrical of barrel-shaped piston (5), there is circumferential recess (5.1), on the bottom land of circumferential recess (5.1), have the circular hole being communicated with barrel-shaped piston (5) inner chamber; There is push rod (2) valve body (10) upper end, and push rod (2) lower end withstands on the upper end of described barrel-shaped piston (5); Push rod (2) upper end is connected with electromagnet armature (1), and there is coil (3) outside of electromagnet armature (1), and there is shell (11) coil (3) outside, and described shell (11) lower end is connected to the upper end surrounding of described valve body (10); It is characterized in that valve body (10) inwall tightens and is furnished with spool (9), described spool (9) is for being inverted drum, and the lower end of described push rod (2) withstands on described piston (5) upper end through behind spool top; On the cylindrical of described spool (9), there is the annular groove (9.1) corresponding with oil inlet hole (10.1) on valve body (10), the bottom land of annular groove (9.1) is circumferentially evenly equipped with tri-angle-holed (9.2), and this is tri-angle-holed all communicates with the oil inlet hole (10.1) on spool (9) inner chamber and valve body (10).
2. one according to claim 1 rail metering solenoid valve altogether, is characterized in that the width of described circumferential recess (5.1) is greater than the height of described tri-angle-holed (9.2).
3. one according to claim 1 rail metering solenoid valve altogether, is characterized in that there is screw thread (8) in described spool (9) hypomere inner circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320819477.3U CN203594855U (en) | 2013-12-13 | 2013-12-13 | Metering electromagnetic valve for common rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320819477.3U CN203594855U (en) | 2013-12-13 | 2013-12-13 | Metering electromagnetic valve for common rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203594855U true CN203594855U (en) | 2014-05-14 |
Family
ID=50675746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320819477.3U Expired - Fee Related CN203594855U (en) | 2013-12-13 | 2013-12-13 | Metering electromagnetic valve for common rail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203594855U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672116A (en) * | 2013-12-13 | 2014-03-26 | 无锡正大轴承机械制造有限公司 | Metering solenoid valve for common rail |
| CN107542960A (en) * | 2017-10-11 | 2018-01-05 | 天津百利展发集团有限公司 | One kind fine setting nodal pattern throttling stop valve valve core structure |
-
2013
- 2013-12-13 CN CN201320819477.3U patent/CN203594855U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672116A (en) * | 2013-12-13 | 2014-03-26 | 无锡正大轴承机械制造有限公司 | Metering solenoid valve for common rail |
| CN107542960A (en) * | 2017-10-11 | 2018-01-05 | 天津百利展发集团有限公司 | One kind fine setting nodal pattern throttling stop valve valve core structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 214192, Rong Qiang Road 1, Furong Industrial Park, Xishan economic and Technological Development Zone, Wuxi, Jiangsu, China Patentee after: WUXI ZHENGDA BEARING MACHINERY MANUFACTURING COMPANY LIMITED Address before: 214192, Rong Qiang Road 1, Furong Industrial Park, Xishan economic and Technological Development Zone, Wuxi, Jiangsu, China Patentee before: Wuxi Zhengda Bearing Machinery Manufacturing Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140514 Termination date: 20181213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |