Anti-blocking self-cleaning EGR valve connecting pipe

Abstract

The utility model discloses an anti-blocking self-cleaning type EGR (exhaust gas recirculation) valve connecting pipe, which relates to the technical field of EGR valves and comprises a connecting pipe body, a connecting block and a transmission component are fixedly communicated on the connecting pipe body, the transmission component is arranged in the connecting pipe body and comprises a fan slidably connected in the connecting pipe body, a first connecting rod is fixedly connected on the fan, and a second connecting rod is fixedly connected on the first connecting rod. The first connecting rod is fixedly connected with a damper, the end, away from the fan, of the damper is fixedly connected into the connecting pipe body, the fan is fixedly connected with a second connecting rod, the second connecting rod is fixedly connected with a first fixing rod, the first fixing rod is fixedly connected with a plastic frame, and in the rotating process, the plastic frame serves as a scraping tool. Dirt attached to the inner wall of the connecting pipe is powerfully squeezed out, impurities are effectively prevented from being accumulated on the pipe wall, it is guaranteed that an exhaust gas circulation channel is always kept smooth, and the problems that the exhaust gas circulation sectional area is reduced and flow resistance is increased due to accumulation of sediments are completely eradicated.

Description

TECHNICAL FIELD

[0001] The utility model relates to EGR valve technical field, concretely is a kind of anti-blocking self-cleaning EGR valve connecting pipe. BACKGROUND

[0002] The exhaust emission control of automobile engine is relatively simple, and the traditional EGR valve connecting pipe is only used as a simple exhaust transmission channel to guide part of the exhaust gas discharged by the engine to the intake manifold to realize the basic exhaust gas recirculation function, reduce the combustion temperature and reduce the generation of nitrogen oxides. At that time, the automobile production was low, and the mileage was limited, so the performance requirement of the connecting pipe was not high, and the ordinary metal pipe could basically meet the demand;

[0003] The traditional connecting pipe is mainly designed as a simple straight pipe or a conventional elbow pipe, and the internal structure is smooth and lacks a special self-cleaning mechanism. When facing the increasing impurities in the engine exhaust gas, it cannot actively attack and clean up. When flowing through the connecting pipe, it will gradually adhere and accumulate on the pipe wall due to the adsorption of the pipe wall and the deposition effect of the airflow velocity variation area. With the extension of use time, these deposits become thicker, reducing the cross-sectional area of the exhaust gas flow passage and increasing the exhaust gas flow resistance. SUMMARY

[0004] The utility model aims at providing a kind of anti-blocking self-cleaning EGR valve connecting pipe to solve the problems raised in the above background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an anti-blocking self-cleaning EGR valve connecting pipe, comprising:

[0006] A connecting pipe body is fixedly connected with a connecting block.

[0007] A transmission assembly is arranged in the connecting pipe body, the transmission assembly comprises a fan slidingly connected in the connecting pipe body, the fan is fixedly connected with a first connecting rod, the first connecting rod is fixedly connected with a damper, the damper is fixedly connected at one end away from the fan in the connecting pipe body, the fan is fixedly connected with a second connecting rod, the second connecting rod is fixedly connected with a first fixed rod, and the first fixed rod is fixedly connected with a plastic frame.

[0008] A threaded frame is arranged in the connecting pipe body, the connecting pipe body is threadedly connected with a cover plate, the threaded frame is rotatably connected in the cover plate on the connecting pipe body, the threaded frame is threadedly connected with a second fixed rod, and the second fixed rod is fixedly connected with the first fixed rod.

[0009] Further, the connecting pipe body is internally provided with a threaded groove, and the outer wall of the plastic frame is provided with a threaded groove, and the plastic frame is threadedly connected in the connecting pipe body through the threaded groove.

[0010] The above technical scheme has the advantages that: the threaded groove is arranged on the outer wall of the plastic frame, and when the wind speed in the connecting pipe body is high, the plastic frame is driven to rotate to scrape off dirt in the threaded groove.

[0011] Further, the first connecting rod is slidingly connected in the connecting pipe body.

[0012] The above technical scheme has the advantages that: the first connecting rod is slidingly connected in the connecting pipe body, and when the fan needs to be disassembled for cleaning, the fan can be directly taken out.

[0013] Further, the connecting pipe body is internally provided with a threaded groove, and the outer wall of the plastic frame is provided with a threaded groove, and the plastic frame is threadedly connected in the connecting pipe body through the threaded groove.

[0014] The above technical scheme has the advantages that: the connecting pipe body is internally provided with a threaded groove, and the outer wall of the plastic frame is provided with a threaded groove, and the plastic frame is threadedly connected in the connecting pipe body through the threaded groove.

[0015] Further, the fan is provided with a groove, and the first connecting rod is fixedly connected in the groove of the fan.

[0016] The above technical scheme has the advantages that: the fan is provided with a groove, and the first connecting rod is fixedly connected in the groove of the fan, so that the first connecting rod is fixed more tightly without occupying the internal space of the connecting pipe body.

[0017] Further, the connecting block is provided with two, and the connecting block close to the plastic frame on one side of the two connecting blocks is fixedly connected to the top of the connecting pipe body, and the connecting block away from the threaded frame on the other side of the two connecting blocks is fixedly connected to the end of the connecting pipe body away from the threaded frame.

[0018] The above technical scheme has the advantages that: the connecting block is provided with two, and the connecting pipe body is conveniently installed on the vehicle by using the connecting block.

[0019] Further, the cover plate on the connecting pipe body is fixedly connected with a bearing, and the threaded frame is fixedly connected in the bearing on the connecting pipe body.

[0020] The above technical scheme has the advantages that: when in use, the threaded frame is prevented from being separated from the limiting of the second fixed rod.

[0021] Compared with the prior art, the advantages and positive effects of the utility model lie in that,

[0022] 1. The utility model discloses a plastic frame is rotated synchronously with the help of connecting rod when the air inflow is big, because the plastic frame is connected with the connecting pipe body with screw thread, in the rotation process, the plastic frame is as the scraping tool, and the dirt attached to the inner wall of the connecting pipe is extruded with force, effectively prevents the impurity and is accumulated in the pipe wall, ensures that the exhaust gas flow passage keeps unobstructed all the time, and the problem that the exhaust gas flow passage is reduced and the flow resistance is increased due to the sediment accumulation is eliminated.

[0023] 2. The utility model discloses the rotation connection of screw thread frame and the bearing in the connecting pipe body cover plate and the screw thread cooperation with fixed link, ensure when the plastic frame rotates and cleans, the whole structure is stable and reliable, and the component will not appear separation or displacement, also provide the convenience for subsequent dismounting and cleaning, just need to unscrew the cover plate, loosen relevant bolt and clamp, can easily drag out the plastic frame and associated components and carry out depth cleaning. DRAWINGS

[0024] Fig. 1 It is a kind of anti-clogging self-cleaning EGR valve connecting pipe overall structure schematic diagram.

[0025] Fig. 2 It is a kind of anti-clogging self-cleaning EGR valve connecting pipe connecting pipe body section structure schematic diagram.

[0026] Fig. 3 It is a kind of anti-clogging self-cleaning EGR valve connecting pipe plastic frame position schematic diagram.

[0027] Fig. 4 It is a kind of anti-clogging self-cleaning EGR valve connecting pipe cover plate removal state schematic diagram.

[0028] Mark in drawing:

[0029] 1, connecting pipe body;11, connecting block;

[0030] 2, transmission assembly;21, fan;22, first connecting rod;23, damping;24, second connecting rod;25, plastic frame;26, first fixed link;

[0031] 3, screw thread frame;31, second fixed link. DETAILED DESCRIPTION

[0032] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0033] Embodiment:

[0034] As Figs. 1-4 indicated, the utility model provides a technical scheme: a kind of anti-blocking self-cleaning EGR valve connecting pipe, comprising:

[0035] Connecting pipe body 1 is fixedly connected with connecting block 11 in connecting pipe body 1;

[0036] Transmission assembly 2, transmission assembly 2 is placed in connecting pipe body 1, and transmission assembly 2 includes fan 21 slidingly connected in connecting pipe body 1, first connecting rod 22 is fixedly connected on fan 21, damping 23 is fixedly connected on first connecting rod 22, and the end of damping 23 away from fan 21 is fixedly connected in connecting pipe body 1;Second connecting rod 24 is fixedly connected on fan 21, first fixed rod 26 is fixedly connected on second connecting rod 24, and plastic frame 25 is fixedly connected on first fixed rod 26;

[0037] Screw frame 3, connecting pipe body 1 is placed in connecting pipe body 1, and cover plate is threadedly connected on connecting pipe body 1, screw frame 3 is rotationally connected in the cover plate on connecting pipe body 1, second fixed rod 31 is threadedly connected on screw frame 3, and second fixed rod 31 is fixedly connected with first fixed rod 26.

[0038] In the utility model, when the air intake is relatively large, airflow blows fan 21 to rotate instantaneously, and fan 21 drives plastic frame 25 to rotate synchronously by connecting rod, since plastic frame 25 is threadedly connected with connecting pipe body 1, in the rotating process, plastic frame 25 is used as a scraping tool to force dirt adhered to the inner wall of the connecting pipe to be extruded, effectively preventing impurities from accumulating on the pipe wall, ensuring that the exhaust gas flow passage remains unobstructed at all times, and eliminating the problem of reduced exhaust gas flow passage area and increased flow resistance caused by sediment accumulation.

[0039] Further, as Figs. 1-4 indicated, screw groove is formed in connecting pipe body 1, and screw groove is formed in the outer wall of plastic frame 25, plastic frame 25 is threadedly connected in connecting pipe body 1 by screw groove, and dirt in screw groove is scraped out when plastic frame 25 is driven to rotate due to relatively large wind speed in connecting pipe body 1 during use.

[0040] First connecting rod 22 is slidingly connected in connecting pipe body 1, and fan 21 can be directly removed for cleaning when it is necessary to disassemble and clean fan 21 by setting first connecting rod 22 slidingly connected in connecting pipe body 1.

[0041] The inside of the connecting pipe body 1 is provided with a slot, and one end of the damper 23 away from the fan 21 is fixedly connected to the slot in the connecting pipe body 1. By providing the slot in the connecting pipe body 1, the damper 23 is placed on the slot in the connecting pipe body 1 during use. A bolt is screwed into the position close to the slot at the bottom of the connecting pipe body 1 during use, so that the damper 23 is clamped and convenient to disassemble.

[0042] The fan 21 is provided with a slot, and the first connecting rod 22 is fixedly connected to the slot in the fan 21. By providing the slot in the fan 21, the first connecting rod 22 is fixed more tightly without occupying the internal space of the connecting pipe body 1 during use.

[0043] The connecting block 11 is provided with two, and one of the two connecting blocks 11 is fixedly connected to the top of the connecting pipe body 1, and the other connecting block 11 is fixedly connected to the end of the connecting pipe body 1 away from the threaded frame 3. By providing two connecting blocks 11, the connecting pipe body 1 is conveniently installed on the vehicle by using the connecting block 11 during use.

[0044] In the above scheme, there is also a problem that the second fixed rod 31 may be separated from the threaded frame 3 during rotation, as shown in Figs. 2-3 The cover plate on the connecting pipe body 1 is fixedly connected with a bearing, and the threaded frame 3 is fixedly connected in the bearing on the connecting pipe body 1. During use, the threaded frame 3 is prevented from being separated from the limiting of the second fixed rod 31.

[0045] Working principle: as shown in Figs. 1-4

[0046] During use, one side of the connecting block 11 is slowly connected to the interface of the EGR valve, and the other connecting block 11 is connected to the interface of the intake manifold or other designated exhaust gas introduction part;

[0047] After that, during the normal intake process, when the intake amount is large, the fan 21 is instantaneously blown to rotate, so that the fan 21 drives the plastic frame 25 to rotate through the first connecting rod 22. Since the plastic frame 25 is screw-connected in the connecting pipe body 1, the plastic frame 25 will squeeze out the dirt in the connecting pipe body 1;

[0048] At this time, the second fixed rod 31 is slightly rotated on the threaded frame 3, and the threaded frame 3 is rotated on the bearing in the cover plate of the connecting pipe body 1, so it will not be separated from the cover plate;

[0049] When the airflow in the connecting pipe body 1 is small, the fan 21 will be bounced back to the original position under the action of the damper 23;

[0050] ​When the fan 21 needs to be disassembled and cleaned, the cover plate on the connecting pipe body 1 is directly screwed off, the bolt for clamping the damping 23 on the connecting pipe body 1 is screwed off, the second fixing rod 31 is screwed off by clamping the threaded frame 3 with a clamp, and the plastic frame 25 and the first connecting rod 22 can be directly pulled out for cleaning.

[0051] The above is only the preferred embodiment of the present application, and is not intended to limit the present application in any form. Although the preferred embodiment of the present application has been disclosed above, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the above-mentioned technical content without departing from the technical solution of the present application, and equivalent embodiments with equivalent changes can be obtained. The implementation schemes in the above embodiments can be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, without departing from the technical solution of the present application, are still within the scope of the present application.

Claims

1. A self-cleaning, anti-clogging EGR valve connecting pipe, characterized in that, include: A connecting pipe body (1) is fixedly connected to a connecting block (11); A transmission assembly (2) is placed inside a connecting pipe body (1). The transmission assembly (2) includes a fan (21) slidably connected inside the connecting pipe body (1). A first connecting rod (22) is fixedly connected to the fan (21). A damper (23) is fixedly connected to the first connecting rod (22). One end of the damper (23) away from the fan (21) is fixedly connected inside the connecting pipe body (1). A second connecting rod (24) is fixedly connected to the fan (21). A first fixing rod (26) is fixedly connected to the second connecting rod (24). A plastic frame (25) is fixedly connected to the first fixing rod (26). The threaded frame (3) is placed inside the connecting pipe body (1). A cover plate is threadedly connected to the connecting pipe body (1). The threaded frame (3) is rotatably connected to the cover plate on the connecting pipe body (1). A second fixing rod (31) is threadedly connected to the threaded frame (3). The second fixing rod (31) is fixedly connected to the first fixing rod (26).

2. The anti-clogging self-cleaning EGR valve connecting pipe according to claim 1, characterized in that: The connecting pipe body (1) has a threaded groove inside, and the outer wall of the plastic frame (25) has a threaded groove. The plastic frame (25) is threadedly connected to the connecting pipe body (1) through the threaded groove.

3. The anti-clogging self-cleaning EGR valve connecting pipe according to claim 1, characterized in that: The first connecting rod (22) is slidably connected inside the connecting tube body (1).

4. The anti-clogging self-cleaning EGR valve connecting pipe according to claim 1, characterized in that: The inside of the connecting pipe body (1) is provided with a slot, and the end of the damper (23) away from the fan (21) is fixedly connected to the slot inside the connecting pipe body (1).

5. The anti-clogging self-cleaning EGR valve connecting pipe according to claim 3, characterized in that: The fan (21) has a slot, and the first connecting rod (22) is fixedly connected to the slot inside the fan (21).

6. The anti-clogging self-cleaning EGR valve connecting pipe according to claim 3, characterized in that: There are two connecting blocks (11). One of the connecting blocks (11) is fixedly connected to the top of the connecting pipe body (1) on the side closer to the plastic frame (25). The other connecting block (11) is fixedly connected to the end of the connecting pipe body (1) away from the threaded frame (3).

7. The anti-clogging self-cleaning EGR valve connecting pipe according to claim 6, characterized in that: A bearing is fixedly connected to the cover plate on the connecting pipe body (1), and the threaded frame (3) is fixedly connected to the bearing on the connecting pipe body (1).

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