CN207212522U - The valve part of exhaust gas recirculation valve - Google Patents
The valve part of exhaust gas recirculation valve Download PDFInfo
- Publication number
- CN207212522U CN207212522U CN201721082324.XU CN201721082324U CN207212522U CN 207212522 U CN207212522 U CN 207212522U CN 201721082324 U CN201721082324 U CN 201721082324U CN 207212522 U CN207212522 U CN 207212522U
- Authority
- CN
- China
- Prior art keywords
- valve
- gear
- valve body
- output shaft
- socketed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Mechanically-Actuated Valves (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The utility model discloses a kind of valve part of exhaust gas recirculation valve, including valve body and motor, motor is arranged on the side of valve body, valve body is provided with the valve port passed through for waste gas, valve rod is installed in valve body, valve rod front end is provided with the valve block for blocking valve port, the position that valve rod tail end is corresponded in valve body is provided with output shaft, the rotating shaft of motor passes through train of reduction gears and output axis connection, output shaft end is socketed with driving and hooks plate, valve rod tail end stirs fork provided with " u "-shaped, stir and bearing is installed in the open slot of fork, driving hooks the hook and slot that plate is provided with arc, bearing is arranged in hook and slot, return torsion spring is socketed with output shaft, the leg insertion driving of the return torsion spring is hooked on plate.So that producing gap adjustment on valve rod between valve block and valve port, and then the circulation of waste gas is precisely controlled, and structure is reliable.
Description
Technical field
It the utility model is related to the control valve in scheme for exhaust gas circulation system in a kind of engine, and in particular to a kind of waste gas is again
The valve part of circulating valve.
Background technology
The valve part of exhaust gas recirculation valve is applied to vehicle engine exhaust gas discharge system using negative pressure of vacuum operation principle
System, is the current solution optimal product of exhaust emissions, and it can reduce engine high-temperature generation in vehicle traveling process
Nitrogen oxides and hydrocarbon, so as to which exhaust emissions reaches standard.
The valve part of traditional exhaust gas recirculation valve has valve body, has valve port, valve rod in valve body, and valve rod is provided with stifled
The valve block of plug valve mouth.The activity of valve rod typically connects driving by worm gear structure by motor or turned by band movable eccentric wheel
Dynamic pressing valve rod driving, some are directly connected to by stepper motor, the aperture precision of valve port and valve block are remained unchanged not in these structures
It can well control, make the insufficient of exhaust-gas treatment, it is undesirable to ultimately result in tail gas waste discharge.
The content of the invention
In view of the shortcomings of the prior art, the purpose of this utility model is to provide a kind of waste gas flow quantity control precisely and tied
The valve part of the reliable exhaust gas recirculation valve of structure.
To achieve the above object, the utility model provides following technical scheme：A kind of valve body of exhaust gas recirculation valve
Part, including valve body and motor, the motor are arranged on the side of the valve body, and described valve body is provided with the valve passed through for waste gas
Mouthful, valve rod is installed, valve rod front end is provided with the valve block for blocking valve port, the valve rod tail is corresponded in the valve body in described valve body
The position at end is provided with output shaft, and the rotating shaft of the motor passes through train of reduction gears and output axis connection, described output shaft end
It is socketed with driving and hooks plate, described valve rod tail end stirs fork provided with " u "-shaped, axle is provided with the open slot for stirring fork
Hold, described driving hooks the hook and slot that plate is provided with arc, and described bearing is arranged in described hook and slot, in described output shaft
On be socketed with return torsion spring, the described driving of the leg of return torsion spring insertion is hooked on plate.
Described train of reduction gears includes drive gear, deceleration convergence gear and the fan being socketed on the machine shaft
Shape gear, the deceleration convergence gear include first gear and second gear, and described drive gear is connected tooth with the deceleration
The first gear engagement of wheel, the second gear engage with the sector gear, and described sector gear is socketed in the output
On axle, the number of teeth of described first gear is more than the number of teeth of the second gear wheel, and the number of teeth of described drive gear is less than the
The number of teeth of one gear.
This structure of the present utility model, machine shaft reduce rotating ratio by train of reduction gears so that output shaft turns
It is dynamic more accurate, and drive driving to hook plate and rotate, the bearing that driving hook plate makes to be arranged on valve rod in rotation process occurs to hang down
Go straight up to drop so that produce gap adjustment on valve rod between valve block and valve port, and then be precisely controlled the circulation of waste gas, and structure can
Lean on.
The utility model is further described with reference to the accompanying drawings and detailed description.
Brief description of the drawings
Fig. 1 is the structure sectional view of the utility model embodiment；
Fig. 2 is the explosive view of the utility model embodiment.
Embodiment
The utility model is specifically described below by embodiment, is served only for carrying out further the utility model
Explanation, it is impossible to be interpreted as the restriction to scope of protection of the utility model.
As shown in Figure 1 and Figure 2, the utility model discloses a kind of valve part of exhaust gas recirculation valve, including the He of valve body 1
Motor 2, motor 2 are arranged on the side of valve body 1, and valve body 1 is provided with the valve port 11 passed through for waste gas, valve rod is provided with valve body 1
3, the front end of valve rod 3 is provided with the valve block 31 for blocking valve port 11, and the position that the tail end of valve rod 3 is corresponded in valve body 1 is provided with output shaft 4, motor 2
Rotating shaft be connected by train of reduction gears 5 with output shaft 4, the end of output shaft 4 is socketed with driving and hooks plate 6, and the tail end of valve rod 3 is provided with
" u "-shaped stirs fork 7, stirs and bearing 8 is provided with the open slot of fork 7, and driving hooks the hook and slot 61 that plate 6 is provided with arc, bearing 8
It is arranged in hook and slot 61, return torsion spring 9 is socketed with output shaft 4, the leg insertion driving of the return torsion spring 9 is hooked on plate 6.
Train of reduction gears 5 includes drive gear 51, deceleration convergence gear 52 and the sector being socketed in the rotating shaft of motor 2
Wheel 53, deceleration convergence gear 52 include first gear 521 and second gear 522, drive gear 51 and deceleration convergence gear 52
First gear 521 is engaged, and second gear 522 engages with sector gear 53, and sector gear 53 is socketed on output shaft 4, the first tooth
The number of teeth of wheel 521 is more than the number of teeth that second gear 522 is taken turns, and the number of teeth of drive gear 51 is less than the number of teeth of first gear 521.
This structure of the present utility model, the rotating shaft of motor 2 reduce rotating ratio by train of reduction gears 5 so that output shaft 4
Rotation is more accurate, and drives driving to hook plate 6 and rotate, and driving hooks plate 6 makes the bearing 8 on valve rod 3 in rotation process
It is vertically moved up or down, driving driving to hook plate 6 and rotate by return torsion spring 9 after the completion of work makes the return of valve rod 3, obtain the upper valve of valve rod 3
Gap adjustment is produced between piece 31 and valve port 11, and then is precisely controlled the circulation of waste gas, and structure is reliable.
Claims (2)
1. a kind of valve part of exhaust gas recirculation valve, including valve body and motor, the motor is arranged on the side of the valve body,
Described valve body is provided with the valve port passed through for waste gas, and valve rod is provided with described valve body, and valve rod front end, which is provided with, blocks valve port
Valve block, the position that the valve rod tail end is corresponded in the valve body is provided with output shaft, it is characterised in that：The rotating shaft of the motor is led to
Train of reduction gears and output axis connection are crossed, described output shaft end is socketed with driving and hooks plate, and described valve rod tail end is provided with " U "
Shape stirs fork, bearing is provided with the open slot for stirring fork, described driving hooks the hook and slot that plate is provided with arc, described
Bearing be arranged in described hook and slot, return torsion spring is socketed with described output shaft, the leg insertion of the return torsion spring
Described driving is hooked on plate.
2. the valve part of exhaust gas recirculation valve according to claim 1, it is characterised in that：Described train of reduction gears bag
Include the drive gear being socketed on the machine shaft, deceleration convergence gear and sector gear, the deceleration convergence gear bag
First gear and second gear are included, described drive gear engages with the first gear of the deceleration convergence gear, and described second
Gear is engaged with the sector gear, and described sector gear is socketed on the output shaft, the number of teeth of described first gear
More than the number of teeth of the second gear wheel, the number of teeth of described drive gear is less than the number of teeth of first gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721082324.XU CN207212522U (en) | 2017-08-28 | 2017-08-28 | The valve part of exhaust gas recirculation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721082324.XU CN207212522U (en) | 2017-08-28 | 2017-08-28 | The valve part of exhaust gas recirculation valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207212522U true CN207212522U (en) | 2018-04-10 |
Family
ID=61817101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721082324.XU Expired - Fee Related CN207212522U (en) | 2017-08-28 | 2017-08-28 | The valve part of exhaust gas recirculation valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207212522U (en) |
-
2017
- 2017-08-28 CN CN201721082324.XU patent/CN207212522U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180410 Termination date: 20210828 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |