CN113638830A

CN113638830A - Motor-driven EGR valve

Info

Publication number: CN113638830A
Application number: CN202110914407.5A
Authority: CN
Inventors: 何笃算
Original assignee: Wenzhou Wenna Auto Parts Co ltd
Current assignee: Wenzhou Wenna Auto Parts Co ltd
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2021-11-12

Abstract

The invention discloses a motor-driven EGR valve in the technical field of automobile parts, which comprises a first shell and a second shell, wherein the lower end of the first shell is clamped with the second shell, the lower end of the inner side of the second shell is fixedly connected with a driving motor, the upper end of the driving motor is fixedly connected with a first rotating rod, the upper end of the first rotating rod is fixedly connected with a first support plate, the right side of the upper end of the first support plate is fixedly connected with a second rotating rod, the outer side of the second rotating rod is rotatably connected with a second support plate, the left side of the upper end of the second support plate is fixedly connected with a third rotating rod, the lower end of the outer side of the third rotating rod is rotatably connected with a valve rod, and the upper end of the outer side of the third rotating rod is slidably connected with a guide rail. According to the invention, the waste gas can be filtered through the filter pipe, the particulate matters can be blocked by the filter screen in the filter pipe, and fine impurities can be blocked by the filter cotton in the filter pipe, so that the waste gas is filtered.

Description

Motor-driven EGR valve

Technical Field

The invention relates to the technical field of automobile parts, in particular to an EGR valve driven by a motor.

Background

The EGR valve is a key element for controlling the secondary intake of exhaust gas, because the secondary intake of exhaust gas needs to be accurately controlled in real time: the ECU of the engine calculates according to parameters such as the rotating speed, the load (the opening degree of a throttle valve), the temperature, the air inlet flow, the exhaust temperature and the like of the engine, outputs a control signal PWM (high frequency pulse) required by an EGR valve, further controls the opening degree of the valve, thereby controlling partial flow exhaust gas of the engine to enter an air inlet system through the EGR valve, and then enter a cylinder to participate in combustion after being mixed with mixed gas, the partial exhaust gas enters the cylinder to participate in the combustion of the mixed gas, the temperature in the cylinder during the combustion is reduced, and the generation of NOx is inhibited because the NOx is generated under the condition of high temperature and oxygen enrichment, so that the content of the NOx in the exhaust gas of the whole engine is reduced, however, excessive exhaust gas participates in recirculation, the ignition and the performance of the mixed gas can be influenced, and the dynamic property of the engine is influenced, particularly, when the engine is in idling, low speed, small load and cold machines, the recirculated exhaust gas can obviously influence the performance of the engine, therefore, when the engine is at idle speed, low speed, small load and cold, the ECU controls the exhaust gas not to participate in recirculation, so as to avoid the influence on the performance of the engine, when the engine exceeds a certain rotating speed, load and reaches a certain temperature, the ECU controls a small part of the exhaust gas to participate in recirculation, and the amount of the exhaust gas participating in recirculation is different according to the rotating speed, the load, the temperature and the temperature of the exhaust gas of the engine, so as to achieve the lowest NOx in the exhaust gas.

But in prior art, because can't handle the waste gas after the circulation, so will lead to waste gas when discharging, directly cause harm to the environment to can't carry out environmental protection and handle, and because the transmission of traditional valve rod leans on spring drive, so life is shorter, will produce accident because of the ageing of spring easily when the live time is comparatively permanent.

Disclosure of Invention

The present invention is directed to a motor-driven EGR valve to solve the problems set forth in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: the lower end of the first shell is connected with a second shell in a clamping manner, the lower end of the inner side of the second shell is fixedly connected with a driving motor, the upper end of the driving motor is fixedly connected with a first rotating rod, the upper end of the first rotating rod is fixedly connected with a first support plate, the right side of the upper end of the first support plate is fixedly connected with a second rotating rod, the outer side of the second rotating rod is rotatably connected with a second support plate, the left side of the upper end of the second support plate is fixedly connected with a third rotating rod, the lower end of the outer side of the third rotating rod is rotatably connected with a valve rod, the upper end of the outer side of the third rotating rod is slidably connected with a guide rail, the left sides of the first shell and the second shell are both fixedly connected with a third shell, the right end of the inner side of the third shell is fixedly connected with the guide rail, the left end of the valve rod is fixedly connected with a soft plug, and the outer side of the soft plug is slidably connected with the third shell, the air outlet is formed in the lower end of the third shell, the lower end of the air outlet is fixedly connected with a filter pipe, the inner upper end of the filter pipe is fixedly connected with a filter screen, the inner lower end of the filter pipe is fixedly connected with filter cotton, and the inner right end of the third shell is provided with a through hole.

As a further scheme of the invention: the equal fixedly connected with bracing piece of lower extreme of second shell and third shell, the lower extreme fixedly connected with bottom plate of bracing piece through setting up bracing piece and bottom plate, can let this equipment prevent in the car through the bottom plate to prop up this equipment, prevent that this equipment from taking place the displacement in the car.

As a still further scheme of the invention: the buckle on the right-hand member fixedly connected with of first shell, the buckle under the right-hand member fixedly connected with of second shell, the inboard equal threaded connection who goes up buckle and lower buckle has the screw, the lower extreme threaded connection of screw has the nut, and through setting up buckle and lower buckle, can let the joint of first shell and second shell, through the connection of last buckle and lower buckle, and increase the structural stability of joint.

As a still further scheme of the invention: the right side fixedly connected with buffer spring of soft stopper, buffer spring's right-hand member is connected with the laminating of third shell, through setting up buffer spring, can be when soft stopper carries out reciprocating motion, can prolong soft stopper's life through buffer spring's buffering.

As a still further scheme of the invention: the inboard fixedly connected with sealing washer of through-hole, the inboard and the valve rod laminating of sealing washer are connected, through setting up the sealing washer, can prevent that waste gas from circulating to other positions of this equipment from the through-hole to prevent that waste gas from causing the injury to other equipment.

As a still further scheme of the invention: the heat dissipation holes are formed in the front side of the lower end of the second shell, the heat dissipation holes are also formed in the rear side of the lower end of the second shell, and heat generated when the driving motor runs can be dissipated through the heat dissipation holes, so that the driving motor is prevented from being overloaded due to overheating.

As a still further scheme of the invention: the outside of first shell scribbles antistatic coating, the outside of second shell and third shell also scribbles antistatic coating, through setting up antistatic coating, can prevent that the inside electric current of this equipment from spilling over, causes the injury to the contacter.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the waste gas can be filtered through the filter pipe, the particulate matters can be blocked by the filter screen in the filter pipe, and fine impurities can be blocked by the filter cotton in the filter pipe, so that the waste gas is filtered.

2. According to the valve, the driving motor is arranged, so that the valve can rotate through the rotation of the driving motor, the first rotating rod can drive the first supporting plate to rotate, the valve rod can reciprocate along the guide rail, the spring is replaced, and the service life is prolonged.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a sectional top view of the present invention;

FIG. 3 is a front view of the present invention;

fig. 4 is an enlarged view of a portion a in the present invention.

In the figure: 1. a first housing; 2. a second housing; 3. a drive motor; 4. a first rotating lever; 5. a first support plate; 6. a second rotating rod; 7. a second support plate; 8. a third rotating rod; 9. a valve stem; 10. a guide rail; 11. a soft plug; 12. a third housing; 13. an exhaust port; 14. a filter tube; 15. a filter screen; 16. filtering cotton; 17. a through hole; 18. a support bar; 19. a base plate; 20. an upper buckle; 21. a lower buckle; 22. a screw; 23. a nut; 24. a buffer spring; 25. a seal ring; 26. heat dissipation holes; 27. and (4) an antistatic coating.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 4, in the embodiment of the present invention, a motor-driven EGR valve includes a first housing 1 and a second housing 2, the second housing 2 is connected to a lower end of the first housing 1 in a clamping manner, a driving motor 3 is fixedly connected to a lower end of an inner side of the second housing 2, a first rotating rod 4 is fixedly connected to an upper end of the driving motor 3, a first supporting plate 5 is fixedly connected to an upper end of the first rotating rod 4, a second rotating rod 6 is fixedly connected to a right side of an upper end of the first supporting plate 5, a second supporting plate 7 is rotatably connected to an outer side of the second rotating rod 6, a third rotating rod 8 is fixedly connected to a left side of an upper end of the second supporting plate 7, a valve rod 9 is rotatably connected to a lower end of an outer side of the third rotating rod 8, a guide rail 10 is slidably connected to an upper end of an outer side of the third rotating rod 8, a third housing 12 is fixedly connected to left sides of the first housing 1 and the second housing 2, the right end of the inner side of the third shell 12 is fixedly connected with a guide rail 10, the left end of the valve rod 9 is fixedly connected with a soft plug 11, the outer side of the soft plug 11 is connected with the third shell 12 in a sliding manner, the lower end of the third shell 12 is provided with an exhaust port 13, the lower end of the exhaust port 13 is fixedly connected with a filter pipe 14, the upper end of the inner side of the filter pipe 14 is fixedly connected with a filter screen 15, the lower end of the inner side of the filter pipe 14 is fixedly connected with filter cotton 16, the right end of the inner side of the third shell 12 is provided with a through hole 17, waste gas can be filtered through the filter pipe 14, the filter screen 15 in the filter pipe 14 can block particulate matters, the filter cotton 16 in the filter pipe 14 can block fine impurities, so that the waste gas is filtered, and the valve can rotate through the driving motor 3 by arranging the driving motor 3, let first bull stick 4 rotate, first bull stick 4 will drive first backup pad 5 and rotate to carry out reciprocating motion with valve rod 9 along guide rail 10, thereby replaced the spring, increased life.

The lower ends of the second shell 2 and the third shell 12 are fixedly connected with a support rod 18, the lower end of the support rod 18 is fixedly connected with a bottom plate 19, and the support rod 18 and the bottom plate 19 are arranged to prevent the equipment from being in the vehicle through the bottom plate 19 and support the equipment to prevent the equipment from being displaced in the vehicle; the right end of the first shell 1 is fixedly connected with an upper buckle 20, the right end of the second shell 2 is fixedly connected with a lower buckle 21, the inner sides of the upper buckle 20 and the lower buckle 21 are both in threaded connection with a screw 22, the lower end of the screw 22 is in threaded connection with a nut 23, the first shell 1 and the second shell 2 can be clamped through the arrangement of the upper buckle 20 and the lower buckle 21, and the structural stability of clamping is improved through the connection of the upper buckle 20 and the lower buckle 21; the right side of the soft plug 11 is fixedly connected with a buffer spring 24, the right end of the buffer spring 24 is attached to the third shell 12, and the buffer spring 24 is arranged, so that when the soft plug 11 performs reciprocating motion, the service life of the soft plug 11 can be prolonged through the buffering of the buffer spring 24; the inner side of the through hole 17 is fixedly connected with a sealing ring 25, the inner side of the sealing ring 25 is attached to the valve rod 9, and the sealing ring 25 is arranged, so that waste gas can be prevented from flowing to other positions of the equipment from the through hole 17, and the waste gas is prevented from damaging other equipment; the front side of the lower end of the second shell 2 is provided with a heat dissipation hole 26, the rear side of the lower end of the second shell 2 is also provided with a heat dissipation hole 26, and heat generated when the driving motor 3 runs can be dissipated through the heat dissipation hole 26 by the heat dissipation hole 26, so that the driving motor 3 is prevented from being overloaded due to overheating; the outer side of the first shell 1 is coated with an antistatic coating 27, the outer sides of the second shell 2 and the third shell 12 are also coated with the antistatic coating 27, and the antistatic coating 27 can prevent the current in the equipment from overflowing and causing injury to a contacter.

The working principle of the invention is as follows: when the invention is used, the device is firstly put to a position to be used through the support rod 18 and the bottom plate 19 at the lower end of the second shell 2, then the driving motor 3 at the inner side of the second shell 2 of the device drives the first rotating rod 4 to drive the first support plate 5, the second rotating rod 6 on the first support plate drives the second support plate 7, the third rotating rod 8 on the second support plate 7 drives the valve rod 9, the valve rod 9 reciprocates along the guide rail 10 in the third shell 12 to push and pull the cork 11 at the front end of the valve rod 9, when the cork 11 moves, the buffer spring 24 at the rear side of the cork 11 buffers and boosts the cork 11 to prolong the service life of the device, the exhaust port 13 at the lower end of the third shell 12 conveys the exhaust gas into the filter pipe 14, the filter screen 15 and the filter cotton 16 in the filter pipe 14 filter the exhaust gas, thereby gas discharge filter tube 14 after will filtering, and sealing washer 25 in the through-hole 17 can prevent that waste gas from entering into other positions of this equipment through-hole 17, when needs inspection or clearance this equipment, can open last buckle 20 of first shell 1 and lower buckle 21 of second shell 2 through rotating screw 22 and nut 23, just can clear up and inspect the inside of this equipment, the outside of this equipment scribbles antistatic coating 27, can prevent that the contacter from electrocuting when touching this equipment outside, and the louvre 26 outside the second shell 2 can let the heat that driving motor 3 gived off through louvre 26, prevent that driving motor 3 is overheated to take place the accident.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. An electric motor driven EGR valve comprising a first housing (1) and a second housing (2), characterized in that: the lower end of the first shell (1) is connected with a second shell (2) in a clamping manner, the inner lower end of the second shell (2) is fixedly connected with a driving motor (3), the upper end of the driving motor (3) is fixedly connected with a first rotating rod (4), the upper end of the first rotating rod (4) is fixedly connected with a first support plate (5), the upper right side of the first support plate (5) is fixedly connected with a second rotating rod (6), the outer side of the second rotating rod (6) is rotatably connected with a second support plate (7), the upper left side of the second support plate (7) is fixedly connected with a third rotating rod (8), the outer lower end of the third rotating rod (8) is rotatably connected with a valve rod (9), the outer upper end of the third rotating rod (8) is slidably connected with a guide rail (10), and the left sides of the first shell (1) and the second shell (2) are both fixedly connected with a third shell (12), the utility model discloses a valve, including third shell (12), guide rail (10), gas vent (13), lower extreme fixedly connected with filter tube (14) of gas vent (13), inboard upper end fixedly connected with filter screen (15) of filter tube (14), the inboard lower extreme fixedly connected with filter pulp (16) of filter tube (14), through-hole (17) have been seted up to the inboard right-hand member of third shell (12) and guide rail (10) fixed connection, the left end fixedly connected with soft stopper (11) of valve rod (9), the outside and third shell (12) sliding connection of soft stopper (11), gas vent (13) have been seted up to the lower extreme of third shell (12), lower extreme fixedly connected with filter tube (14) of gas vent, the inboard right-hand member of third shell (12).

2. The motor-driven EGR valve of claim 1 wherein: the lower ends of the second shell (2) and the third shell (12) are fixedly connected with supporting rods (18), and the lower ends of the supporting rods (18) are fixedly connected with a bottom plate (19).

3. The motor-driven EGR valve of claim 1 wherein: buckle (20) on the right-hand member fixedly connected with of first shell (1), buckle (21) under the right-hand member fixedly connected with of second shell (2), the inboard equal threaded connection of going up buckle (20) and lower buckle (21) has screw (22), the lower extreme threaded connection of screw (22) has nut (23).

4. The motor-driven EGR valve of claim 1 wherein: the right side fixedly connected with buffer spring (24) of cork (11), the right-hand member and third shell (12) laminating of buffer spring (24) are connected.

5. The motor-driven EGR valve of claim 1 wherein: the inboard fixedly connected with sealing washer (25) of through-hole (17), the inboard and the valve rod (9) laminating of sealing washer (25) are connected.

6. The motor-driven EGR valve of claim 1 wherein: the front side of the lower end of the second shell (2) is provided with a heat dissipation hole (26), and the rear side of the lower end of the second shell (2) is also provided with a heat dissipation hole (26).

7. The motor-driven EGR valve of claim 1 wherein: the outer side of the first shell (1) is coated with an antistatic coating (27), and the outer sides of the second shell (2) and the third shell (12) are also coated with the antistatic coating (27).