Double-valve type exhaust gas recirculation valve

Abstract

The utility model relates to the technical field of exhaust gas recirculation valves, in particular to a double-valve type exhaust gas recirculation valve which comprises a circulation valve body, a filter assembly and a connecting pipe component, a top plate is arranged above the circulation valve body, a first flange is annularly arranged at the upper end of the circulation valve body, a plurality of fixing bolts are arranged on the side of a second lower edge, and the filter assembly is arranged on the top plate. One end of each fixing bolt penetrates through the second lower edge and is in threaded connection with the first lower edge, a plurality of first positioning grooves are annularly and evenly formed in the surface of the third flange, and first positioning blocks matched with the first positioning grooves are annularly and evenly arranged on the lower surface of the second sealing gasket. When the top plate is disassembled, the fixing bolt is unscrewed to be separated from the second lower edge, and then the top plate can be taken down; when the top plate is installed, the top plate is installed and fixed through threaded connection of the fixing bolts, the first lower edge and the circulating valve body, and the top plate of the exhaust gas recirculation valve is convenient to install and overhaul.

Description

TECHNICAL FIELD

[0001] The utility model relates to exhaust gas recirculation valve technical field especially relates to a double valve exhaust gas recirculation valve. BACKGROUND

[0002] The double valve exhaust gas recirculation valve is an important component for internal combustion engine emission system. Its main function is to introduce the exhaust gas of engine into the combustion chamber again to reduce the emission of harmful gas and improve the combustion efficiency. This valve adopts double valve design, including intake valve and exhaust valve, to accurately control the flow of exhaust gas.

[0003] For example, the double valve exhaust gas recirculation valve with the authorization announcement number "CN221779547U" is set through the cooling pipeline, liquid inlet hole, liquid outlet hole and valve body. During the use of the valve body, the workers can install the valve body to the specified working position, and then connect the liquid inlet hole and the liquid outlet hole with the external pipeline. The liquid inlet hole circulates the cooling liquid in the valve body along the cooling pipeline for one cycle, so that the cooling liquid carrying heat energy is transported out along the liquid outlet hole, and the valve body improves the high temperature resistance.

[0004] The above and prior art have the following defects: the top plate of the exhaust gas recirculation valve is welded on the valve body, which is not convenient for maintenance. At the same time, although the sealing ring is fixed by the metal ring, when the connecting disc and the fixing disc are installed by screws, the sealing ring will still rotate slightly, causing the sealing to be not tight. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the defects in the prior art and provides a double valve exhaust gas recirculation valve.

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

[0007] The utility model provides a kind of double-valve exhaust gas recirculation valve, including circulating valve body and filter assembly and link pipe component, the circulating valve body is equipped with top plate above, the first flange is annularly equipped on the circulating valve body upper end, the first gasket is equipped between the top plate and first flange, the first flange side surface annularly is equipped with first lower edge, the top plate side surface annularly is equipped with second lower edge, the second lower edge side is equipped with multiple fixed pegs, multiple The one end of fixed peg is all penetrated second lower edge and is connected with first lower edge screw thread, and the one end of multiple fixed peg is all connected with circulating valve body screw thread, the second flange is equipped on the circulating valve body lower end, the third flange is equipped on the filter assembly and link pipe component upper end, the second flange and third flange are connected and fixed by multiple mounting bolt components, the second flange and third flange are equipped with second gasket between, the first stop ring is equipped on the third flange upper surface inboard, the first stop ring surface diameter matches circulating valve body inner wall diameter, the third flange surface annularly is evenly equipped with multiple first positioning grooves, and the second gasket lower surface annularly is evenly equipped with with first positioning groove matching first positioning block.

[0008] Preferably, the first stop ring outer side surface annularly is evenly equipped with multiple second positioning grooves, and the second gasket inner wall annularly is evenly equipped with multiple second positioning blocks, and multiple The second positioning groove and multiple second positioning block one-to-one correspond and match.

[0009] Preferably, the second lower edge surface is equipped with multiple first mounting blocks corresponding to fixed peg one-to-one, the first mounting block outer side surface is plane, and the fixed peg penetrates first mounting block.

[0010] Preferably, the circulating valve body surface is equipped with multiple second mounting blocks corresponding to fixed peg one-to-one, the second mounting block outer side surface is plane, and the fixed peg is connected with second mounting block screw thread.

[0011] Preferably, the top plate lower surface annularly is equipped with second stop ring, and the second stop ring is connected with circulating valve body sliding.

[0012] The double-valve exhaust gas recirculation valve has the beneficial effects that: when disassembling the top plate, the fixed peg is loosened, the fixed peg is separated from the second lower edge, and the top plate can be removed; when installing the top plate, the first gasket is installed first, then the top plate is pressed, the fixed peg is connected with the first lower edge and the circulating valve body screw thread, and the top plate is installed and fixed. In summary, the top plate of the exhaust gas recirculation valve is convenient to install and maintain. The first positioning block on the second gasket extends into the first positioning groove, so that the second gasket does not rotate slightly, and sealing is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a sectional view of the structure of the utility model;

[0014] Figure 2 It is the second sealing gasket structure schematic view of the utility model;

[0015] Figure 3 It is the filter assembly and the structure schematic view of the connecting pipe component of the utility model;

[0016] Figure 4 It is the top plate structure schematic view of the utility model;

[0017] Figure 5 It is the A position enlarged view of the utility model.

[0018] In the figure: circulating valve body 1, filter assembly and connecting pipe component 2, top plate 3, first flange 4, first sealing gasket 5, first lower edge 6, second lower edge 7, fixed bolt 8, second flange 9, third flange 10, mounting bolt assembly 11, second sealing gasket 12, first blocking ring 13, first positioning groove 14, first positioning block 15, second positioning groove 16, second positioning block 17, first mounting block 18, second mounting block 19, second blocking ring 20. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to 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.

[0020] Refer to Figures 1-5 A double-valve type exhaust gas recirculation valve, comprising a circulating valve body 1 and a filter assembly and connecting pipe component 2, a top plate 3 is arranged above the circulating valve body 1, a first flange 4 is arranged in a ring shape at the upper end of the circulating valve body 1, a first sealing gasket 5 is arranged between the top plate 3 and the first flange 4, a first lower edge 6 is arranged in a ring shape on the side surface of the first flange 4, a second lower edge 7 is arranged in a ring shape on the side surface of the top plate 3, a plurality of fixed bolts 8 are arranged on the side of the second lower edge 7, one end of each of the plurality of fixed bolts 8 penetrates through the second lower edge 7 and is threadedly connected with the first lower edge 6, one end of each of the plurality of fixed bolts 8 is threadedly connected with the circulating valve body 1, the fixed bolt 8 is threadedly connected with both the first lower edge 6 and the circulating valve body 1, thereby enhancing the firmness. A second flange 9 is arranged at the lower end of the circulating valve body 1, a third flange 10 is arranged at the upper end of the filter assembly and connecting pipe component 2, the second flange 9 and the third flange 10 are connected and fixed through a plurality of mounting bolt assemblies 11, a second sealing gasket 12 is arranged between the second flange 9 and the third flange 10, a first blocking ring 13 is arranged on the inner side of the upper surface of the third flange 10, the diameter of the surface of the first blocking ring 13 matches the diameter of the inner wall of the circulating valve body 1, a plurality of first positioning grooves 14 are uniformly arranged in a ring shape on the surface of the third flange 10, and a plurality of first positioning blocks 15 that match the first positioning grooves 14 are uniformly arranged in a ring shape on the lower surface of the second sealing gasket 12.

[0021] The first blocking ring 13 is externally provided with a plurality of second positioning grooves 16, the second sealing gasket 12 is internally provided with a plurality of second positioning blocks 17, and the second positioning grooves 16 and the second positioning blocks 17 are one-to-one corresponding and matched.

[0022] The second lower edge 7 is externally provided with a plurality of first mounting blocks 18 corresponding to the fixing bolts 8, the first mounting blocks 18 are externally provided with flat surfaces, and the fixing bolts 8 pass through the first mounting blocks 18.

[0023] The circulating valve body 1 is externally provided with a plurality of second mounting blocks 19 corresponding to the fixing bolts 8, the second mounting blocks 19 are externally provided with flat surfaces, and the fixing bolts 8 are threadedly connected with the second mounting blocks 19.

[0024] The top plate 3 is internally provided with a second blocking ring 20, and the second blocking ring 20 is slidably connected with the circulating valve body 1.

[0025] Working principle: when the top plate 3 is disassembled, the fixing bolts 8 are loosened, the fixing bolts 8 are separated from the second lower edge 7, and the top plate 3 can be removed; when the top plate 3 is installed, the first sealing gasket 5 is first installed, the first sealing gasket 5 is positioned by the second blocking ring 20 and the inner wall of the circulating valve body 1, then the top plate 3 is pressed, the top plate 3 is installed and fixed by the thread connection between the fixing bolts 8, the first lower edge 6 and the circulating valve body 1.

[0026] When the second sealing gasket 12 is installed, the first positioning blocks 15 on the second sealing gasket 12 are inserted into the first positioning grooves 14, and the second positioning blocks 17 are inserted into the second positioning grooves 16, the second sealing gasket 12 is fixed on the third flange 10 by the limiting effect of the first blocking ring 13, then the second flange 9 and the third flange 10 are installed and fixed by the fixing effect of the mounting bolt assembly 11, and the circulating valve body 1, the filtering assembly and the connecting pipe component 2 are installed.

[0027] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the application concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A dual-valve exhaust gas recirculation valve, comprising a recirculation valve body (1) and a filter assembly and a connecting pipe component (2), characterized in that, The circulating valve body (1) is provided with a top plate (3) above it. The upper end of the circulating valve body (1) is provided with a first flange (4) in annular shape. A first sealing gasket (5) is provided between the top plate (3) and the first flange (4). The side surface of the first flange (4) is provided with a first lower edge (6) in annular shape. The side surface of the top plate (3) is provided with a second lower edge (7) in annular shape. Multiple fixing bolts (8) are provided on the side of the second lower edge (7). One end of each of the multiple fixing bolts (8) passes through the second lower edge (7) and is threaded to the first lower edge (6). One end of each of the multiple fixing bolts (8) is threaded to the circulating valve body (1). The lower end of the circulating valve body (1) is provided with a second flange (9). The filter assembly and connecting pipe component (2) is provided with a third flange (10) at the upper end. The second flange (9) and the third flange (10) are connected and fixed by multiple mounting bolt assemblies (11). A second sealing gasket (12) is provided between the second flange (9) and the third flange (10). A first retaining ring (13) is provided on the inner side of the upper surface of the third flange (10). The surface diameter of the first retaining ring (13) matches the inner wall diameter of the circulation valve body (1). Multiple first positioning grooves (14) are uniformly provided on the surface of the third flange (10). A first positioning block (15) matching the first positioning groove (14) is uniformly provided on the lower surface of the second sealing gasket (12).

2. The dual-valve exhaust gas recirculation valve according to claim 1, characterized in that, The outer surface of the first retaining ring (13) is uniformly provided with a plurality of second positioning grooves (16), and the inner wall of the second sealing gasket (12) is uniformly provided with a plurality of second positioning blocks (17). The plurality of second positioning grooves (16) and the plurality of second positioning blocks (17) correspond to and match one by one.

3. The dual-valve exhaust gas recirculation valve according to claim 1, characterized in that, The second lower edge (7) surface is provided with a plurality of first mounting blocks (18) corresponding one-to-one with the fixing bolts (8). The outer surface of the first mounting block (18) is a plane, and the fixing bolts (8) pass through the first mounting blocks (18).

4. A dual-valve exhaust gas recirculation valve according to claim 1, characterized in that, The surface of the circulation valve body (1) is provided with a plurality of second mounting blocks (19) corresponding one-to-one with the fixing bolts (8). The outer surface of the second mounting block (19) is a plane, and the fixing bolts (8) are threadedly connected to the second mounting blocks (19).

5. A dual-valve exhaust gas recirculation valve according to claim 1, characterized in that, The top plate (3) has a second retaining ring (20) on its lower surface, and the second retaining ring (20) is slidably connected to the circulation valve body (1).

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