An EGR valve housing that prevents carbon deposits from clogging

Abstract

The utility model relates to the technical field of exhaust gas recirculation valve, specifically to an anti-carbon deposit clogging EGR valve housing, including a valve housing, an air inlet is opened on one side of the valve housing, and an anti-clogging mechanism is arranged on one side of the air inlet; when the airflow passes through the ventilation pipe, it is filtered by the filter cartridge to intercept the carbon deposits and prevent them from entering the valve housing and affecting the valve; a filter cartridge with a larger filtering area is adopted to ensure the smooth flow of air; when the airflow passes through the impeller, it will drive the first scraper connected to the rotating rod to rotate, and the carbon deposits attached to the surface of the filter cartridge are scraped off by the first scraper to prevent the carbon deposits from clogging the filter cartridge and affecting the air circulation; when the second scraper rotates to the position of the sealing strip, the push block will preferentially contact the sealing strip and compress the gas spring connected to the sealing strip, causing the sealing strip to sink, so that a gap appears between the fitting strip and the sealing strip, so that the carbon deposit gap enters the collection box, and the scraped carbon deposits are collected.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust gas recirculation valves, in particular to an EGR valve housing that is prevented from being blocked by carbon deposits. Background Art

[0002] The EGR valve, or exhaust gas recirculation valve, is a mechatronic product installed on a gasoline engine to control the amount of exhaust gas recirculation fed back to the intake system. Its function is to allow a portion of the exhaust gas generated by engine combustion to re-enter the engine's air intake pipe, and this portion of the exhaust gas is mixed with fresh air and then enters the engine's cylinder for secondary combustion, thereby reducing the combustion temperature in the cylinder and thus reducing the generation and emission of nitrogen dioxide.

[0003] The prior art, such as publication number CN208169019U, provides an EGR mixing device, which includes an EGR mixer, an EGR valve and an EGR injection pipe; the left end of the EGR mixer forms an intake pipe; the right end of the EGR mixer forms an EGR intake pipe, and the right end of the EGR mixer also forms an EGR valve housing, and the EGR mixer between the intake pipe and the EGR valve housing forms an EGR outlet pipe, and the EGR outlet pipe and the EGR intake pipe are both connected to the EGR valve housing; the EGR mixer is formed with an EGR injection pipe cavity; the EGR injection pipe is arranged in the EGR injection pipe cavity. The EGR mixing device of the utility model reduces the number of parts, reduces costs, and improves reliability through a functional integration solution; it is compact in structure, saves layout space, and provides sufficient design space for engine and vehicle layout; the EGR injection pipe greatly improves the uniformity of EGR mixing and meets the performance requirements of the whole machine for the EGR mixing system.

[0004] In the current exhaust gas recirculation valve, carbon deposits are easy to stick to the valve shaft or even enter the valve body, which will reduce the life of the valve and the reliability of the valve cannot be guaranteed. In view of this, we propose an EGR valve housing that prevents carbon deposits from clogging. Utility Model Content

[0005] The utility model aims to provide an EGR valve housing that can prevent carbon deposits from clogging it, and the EGR valve housing that can prevent carbon deposits from clogging it solves the problem that carbon deposits are easily stuck on the valve shaft.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An anti-carbon deposition blocking EGR valve housing comprises a valve housing, an air inlet is provided on one side of the valve housing, and an anti-blocking mechanism is provided on one side of the air inlet;

[0008] The vent pipe is connected to one side of the air inlet, the inner wall of the air filter is provided with a filter cartridge, the filter cartridge is connected to the inner wall of the air filter via a support ring, the inner wall of the support ring is connected to a support frame, the inner wall of the support frame is rotatably connected to a rotating rod, and the rotating rod penetrates the cylinder wall of the filter cartridge, the outer wall of the rotating rod is rotatably connected to an impeller, and one end of the rotating rod is connected to a first scraper at the outside of the filter cartridge, and the first scraper contacts the outer wall of the filter cartridge. By arranging the anti-blocking mechanism at the position of the air inlet, the airflow is filtered through the filter cartridge when passing through the airflow through the airflow pipe, so as to intercept carbon deposits and avoid entering the valve housing and affecting the valve. The filter cartridge with a larger filtering area is used to ensure the smoothness of airflow. When the airflow passes through the impeller, it will drive the first scraper connected to the rotating rod to rotate, and the carbon deposits attached to the surface of the filter cartridge are scraped off by the first scraper, so as to avoid carbon deposits clogging the filter cartridge and affecting air circulation.

[0009] Preferably, a second scraper is connected to one side of the first scraper, and the second scraper is in contact with the inner wall of the ventilation pipe. A push block is connected to the outer wall of the second scraper. By arranging the second scraper to be connected to the first scraper, the carbon deposits on the inner wall of the ventilation pipe can be scraped off by the rotation of the second scraper to avoid excessive accumulation affecting air circulation.

[0010] Preferably, the first scraper is L-shaped and fits against the outer wall of the filter cartridge, and the fitting surface is arranged in an arc shape, and the second scraper is fitted against the inner wall of the ventilation pipe, and the fitting surface is arranged in an arc shape.

[0011] Preferably, a slide groove is provided on the inner wall of the ventilation pipe, and a collection box is slidably connected to the inner wall of the slide groove. By arranging the collection box at the bottom of the ventilation pipe, the scraped carbon deposits can be collected conveniently.

[0012] Preferably, a sealing strip is provided on the top of the collection box, and fitting strips are respectively connected to both sides of the top of the collection box, and the fitting strips fit with one side corresponding to the sealing strip.

[0013] Preferably, a gas spring is connected to the bottom of the collection box, and the top of the gas spring is connected to a sealing strip. The top of the sealing strip is arranged in a circular arc. When the second scraper rotates to the position of the sealing strip, the push block will preferentially contact the sealing strip, and will compress the gas spring connected to the sealing strip, so that the sealing strip sinks, and a gap appears between the fitting strip and the sealing strip, so that the carbon deposits enter the collection box at the gap, so as to facilitate the collection of the scraped carbon deposits.

[0014] Preferably, bonding plates are respectively connected to both sides of the collection box, and the bonding plates are connected to the bottom of the ventilation pipe by bolts, which ensures the sealing between the collection box and the slide groove and facilitates the later disassembly of the collection box for centralized processing of the collected carbon deposits.

[0015] By means of the above technical solution, the utility model provides an EGR valve housing that prevents carbon deposits from clogging. It has at least the following beneficial effects:

[0016] 1. The utility model sets an anti-blocking mechanism at the position of the air inlet, and intercepts carbon deposits by filtering the air flow through the filter cartridge when the air flow passes through the ventilation pipe, so as to avoid entering the valve housing and affecting the valve. The filter cartridge with a larger filtering area is used to ensure the smooth flow of air flow. When the air flow passes through the impeller, it will drive the first scraper connected to the rotating rod to rotate, and the carbon deposits attached to the surface of the filter cartridge will be scraped off by the first scraper, so as to avoid the accumulation of carbon deposits to block the filter cartridge and affect the air circulation.

[0017] 2. According to the utility model, when the second scraper rotates to the position of the sealing strip, the push block will contact the sealing strip first, compress the gas spring connected to the sealing strip, and make the sealing strip sink, so that a gap appears between the fitting strip and the sealing strip, so that the carbon deposits enter the collection box at the gap, so as to facilitate the collection of the scraped carbon deposits. When the push block leaves, the sealing strip is reset and closed due to the tension of the gas spring, so as to avoid the collected carbon deposits flying out and causing secondary blockage, so as to reduce the probability of the filter cartridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a partial cross-sectional view of the anti-blocking mechanism in the utility model;

[0021] Figure 3 It is a partial cross-sectional view of the filter cartridge in the utility model;

[0022] Figure 4 It is a partial cross-sectional view of the collecting box in the utility model.

[0023] In the figure: 1. valve housing; 2. air inlet; 3. anti-blocking mechanism; 31. ventilation pipe; 32. filter cartridge; 321. support ring; 322. support frame; 323. rotating rod; 324. impeller; 325. first scraper; 326. second scraper; 327. push block; 33. collecting box; 330. slide groove; 331. gas spring; 332. sealing strip; 333. fitting strip; 334. fitting plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1

[0026] A method for preventing carbon deposits from clogging an EGR valve housing, such as Figure 1 - Figure 4 As shown, it includes a valve housing 1, an air inlet 2 is opened on one side of the valve housing 1, and an anti-blocking mechanism 3 is arranged on one side of the air inlet 2. The anti-blocking mechanism 3 includes a vent pipe 31, the vent pipe 31 is connected to one side of the air inlet 2, and a filter cartridge 32 is arranged on the inner wall of the vent pipe 31, and the filter cartridge 32 is connected to the inner wall of the vent pipe 31 through a support ring 321, and the inner wall of the support ring 321 is connected to a support frame 322, and the inner wall of the support frame 322 is rotatably connected to a rotating rod 323, and the rotating rod 323 penetrates the cylinder wall of the filter cartridge 32, and the outer wall of the rotating rod 323 is rotatably connected to an impeller 324, and one end of the rotating rod 323 outside the filter cartridge 32 is connected to a first scraper 325, and the first scraper 325 contacts the outer wall of the filter cartridge 32, and the anti-blocking mechanism 3 is arranged at the position of the air inlet 2, and the airflow is filtered by the filter cartridge 32 when passing through the vent pipe 31, so as to intercept carbon deposits and avoid entering the valve housing 1 to affect the valve. The use of a filter cartridge 32 with a larger filtering area can ensure the smoothness of air circulation. When the air flow passes through the impeller 324, it will drive the first scraper 325 connected to the rotating rod 323 to rotate, and the carbon deposits attached to the surface of the filter cartridge 32 are scraped off by the first scraper 325 to avoid the carbon deposits from clogging the filter cartridge 32 and affecting the air circulation. A second scraper 326 is connected to one side of the first scraper 325, and the second scraper 326 contacts the inner wall of the ventilation pipe 31, and a push block 327 is connected to the outer wall of the second scraper 326. By setting the second scraper 326 to be connected to the first scraper 325, the carbon deposits on the inner wall of the ventilation pipe 31 can be scraped off by the rotation of the second scraper 326 to avoid excessive accumulation affecting the air circulation. The first scraper 325 is L-shaped and fits the outer wall of the filter cartridge 32, and the fitting surface is set in an arc shape. The second scraper 326 fits the inner wall of the ventilation pipe 31, and the fitting surface is set in an arc shape.

[0027] In this embodiment, when the air flow passes through the ventilation pipe 31, it is filtered by the filter cartridge 32 to intercept the carbon deposits and prevent them from entering the valve housing 1 and affecting the valve. The filter cartridge 32 with a larger filtering area is used to ensure the smooth flow of air. When the air flow passes through the impeller 324, it will drive the first scraper 325 connected to the rotating rod 323 to rotate. The carbon deposits attached to the surface of the filter cartridge 32 are scraped off by the first scraper 325 to prevent the carbon deposits from clogging the filter cartridge 32 and affecting the air circulation. By setting a second scraper 326 connected to the first scraper 325, the carbon deposits on the inner wall of the ventilation pipe 31 can be scraped off by the rotation of the second scraper 326 to prevent excessive accumulation from affecting the air circulation.

[0028] Example 2

[0029] like Figure 2 , Figure 4 As shown, a slide groove 330 is provided on the inner wall of the vent pipe 31, and a collection box 33 is slidably connected to the inner wall of the slide groove 330. By arranging the collection box 33 at the bottom of the vent pipe 31, it is convenient to collect the scraped carbon deposits. A sealing strip 332 is provided on the top of the collection box 33. The two sides of the top of the collection box 33 are respectively connected to bonding strips 333, and the bonding strips 333 are bonded to the corresponding side of the sealing strip 332. A gas spring 331 is connected to the bottom of the collection box 33. The top of the gas spring 331 is connected to the sealing strip 332. The top of the sealing strip 332 is set in an arc shape. When the second scraper 326 rotates to the sealing When the sealing strip 332 is in the position, the push block 327 will preferentially contact the sealing strip 332 and compress the gas spring 331 connected to the sealing strip 332, causing the sealing strip 332 to sink, resulting in a gap between the fitting strip 333 and the sealing strip 332, allowing the carbon deposits to enter the collection box 33 at the gap, so as to facilitate the collection of the scraped carbon deposits. The two sides of the collection box 33 are respectively connected to the fitting plates 334, and the fitting plates 334 are connected to the bottom of the ventilation pipe 31 by bolts. While ensuring the sealing between the collection box 33 and the slide groove 330, it is also convenient for the later disassembly of the collection box 33 to centrally process the collected carbon deposits.

[0030] In this embodiment, when the second scraper 326 rotates to the position of the sealing strip 332, the push block 327 will preferentially contact the sealing strip 332, and compress the gas spring 331 connected to the sealing strip 332, so that the sealing strip 332 sinks, and a gap appears between the fitting strip 333 and the sealing strip 332, so that the carbon deposits enter the collection box 33 at the gap, so as to facilitate the collection of the scraped carbon deposits.

[0031] When the EGR valve housing is in use, the airflow is filtered through the filter cartridge 32 when passing through the ventilation pipe 31, so as to intercept the carbon deposits and prevent them from entering the valve housing 1 and affecting the valve. The filter cartridge 32 with a larger filtering area is used to ensure the smooth flow of air. When the airflow passes through the impeller 324, it drives the first scraper 325 connected to the rotating rod 323 to rotate, and the carbon deposits attached to the surface of the filter cartridge 32 are scraped off by the first scraper 325, so as to prevent the carbon deposits from clogging the filter cartridge 32 and affecting the air circulation. In addition, by arranging the second scraper 326 connected to the first scraper 325, the second scraper 326 can be rotated to The carbon deposits on the inner wall of the ventilation pipe 31 are scraped off to avoid excessive accumulation that affects air circulation. When the second scraper 326 rotates to the position of the sealing strip 332, the push block 327 will preferentially contact the sealing strip 332 and compress the gas spring 331 connected to the sealing strip 332, causing the sealing strip 332 to sink, resulting in a gap between the fitting strip 333 and the sealing strip 332, allowing the carbon deposits to enter the collection box 33 at the gap to facilitate the collection of the scraped carbon deposits. When the push block 327 leaves, the sealing strip 332 is reset and closed due to the tension of the gas spring 331 to avoid the collected carbon deposits flying out and causing secondary blockage, thereby reducing the probability of the filter cartridge 32.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An EGR valve housing for preventing carbon deposition from clogging, comprising a valve housing (1), characterized in that: An air inlet (2) is provided on one side of the valve housing (1), and an anti-blocking mechanism (3) is provided on one side of the air inlet (2); The anti-blocking mechanism (3) comprises a vent pipe (31), the vent pipe (31) being connected to one side of the air inlet (2), a filter cartridge (32) being arranged on the inner wall of the vent pipe (31), the filter cartridge (32) being connected to the inner wall of the vent pipe (31) via a support ring (321), the inner wall of the support ring (321) being connected to a support frame (322), the inner wall of the support frame (322) being rotatably connected to a rotating rod (323), and the rotating rod (323) passing through the wall of the filter cartridge (32), the outer wall of the rotating rod (323) being rotatably connected to an impeller (324), and one end of the rotating rod (323) being located outside the filter cartridge (32) being connected to a first scraper (325), and the first scraper (325) being in contact with the outer wall of the filter cartridge (32).

2. The EGR valve housing for preventing carbon deposition from clogging according to claim 1, characterized in that: A second scraper (326) is connected to one side of the first scraper (325), and the second scraper (326) is in contact with the inner wall of the ventilation pipe (31), and a push block (327) is connected to the outer wall of the second scraper (326).

3. The EGR valve housing for preventing carbon deposits from clogging according to claim 2, characterized in that: The first scraper (325) is L-shaped and fits against the outer wall of the filter cartridge (32), and the fitting surface is arranged in an arc shape; the second scraper (326) fits against the inner wall of the ventilation pipe (31), and the fitting surface is arranged in an arc shape.

4. The EGR valve housing for preventing carbon deposits from clogging according to claim 1, characterized in that: The inner wall of the ventilation pipe (31) is provided with a sliding groove (330), and the inner wall of the sliding groove (330) is slidably connected to a collection box (33).

5. The EGR valve housing for preventing carbon deposition from clogging according to claim 4, characterized in that: A sealing strip (332) is provided on the top of the collection box (33), and two sides of the top of the collection box (33) are respectively connected to bonding strips (333), and the bonding strips (333) are bonded to a corresponding side of the sealing strip (332).

6. The EGR valve housing for preventing carbon deposition from clogging according to claim 5, characterized in that: The bottom of the collection box (33) is connected to a gas spring (331), the top of the gas spring (331) is connected to a sealing strip (332), and the top of the sealing strip (332) is arranged in an arc shape.

7. The EGR valve housing for preventing carbon deposits from clogging according to claim 5, characterized in that: Both sides of the collection box (33) are respectively connected with bonding plates (334), and the bonding plates (334) are connected to the bottom of the ventilation pipe (31) through bolts.

Images