EGR (Exhaust Gas Recirculation) valve body airtightness detection device

Abstract

The utility model relates to an EGR (Exhaust Gas Recirculation) valve body air tightness detection device which comprises a detection table, and a fixed seat, a driving assembly, a guide rail, an air inlet seat, a first air inlet pipe, a second air inlet pipe, a first flow meter, a second flow meter, a differential pressure gauge and a pressure gauge which are arranged on the detection table, the fixed seat is connected to the output end of the driving assembly, the fixed seat is arranged on the guide rail, and the driving assembly drives the fixed seat to move on the guide rail; the first air inlet pipe and the second air inlet pipe are respectively connected with the air inlet seat, the first flow meter is arranged on the first air inlet pipe, and the second flow meter is arranged on the second air inlet pipe; the fixing seat is further connected with an air outlet pipe, and the differential pressure gauge and the pressure gauge are arranged on the air outlet pipe. The EGR valve body air tightness detection device is simple in structure principle, and the EGR valve body air tightness detection is convenient.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, specifically to a smoothie machine. Background Technology

[0002] The EGR valve is a crucial component in the exhaust gas recirculation system. Its function is to control the amount of exhaust gas entering the intake manifold, allowing a certain amount of exhaust gas to flow into the intake manifold for recirculation. EGR valves are installed on the intake manifold and can be classified into vacuum type and electrically controlled type based on their operating principle. To prevent leakage during EGR valve operation, an airtightness test is required to check for casting defects that could lead to air or water leakage. Therefore, a device for testing the airtightness of the EGR valve body needs to be designed. Utility Model Content

[0003] The purpose of this invention is to provide an EGR valve body airtightness testing device, which addresses the risk of air leakage in EGR valve bodies due to casting and can conveniently detect the airtightness of EGR valve bodies.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] An EGR valve body airtightness testing device includes a testing platform and a fixed base, a drive assembly, a guide rail, an air inlet seat, a first air inlet pipe, a second air inlet pipe, a first flow meter, a second flow meter, a differential pressure gauge, and a pressure gauge mounted on the testing platform. The fixed base is used to fix the EGR valve body and is connected to the output end of the drive assembly. The fixed base is mounted on the guide rail, and the drive assembly drives the fixed base to move on the guide rail. The first air inlet pipe and the second air inlet pipe are respectively connected to the air inlet seat. The first flow meter is mounted on the first air inlet pipe, and the second flow meter is mounted on the second air inlet pipe. The fixed base is also connected to an air outlet pipe, and the differential pressure gauge and the pressure gauge are mounted on the air outlet pipe.

[0006] Preferably, the drive assembly includes a support plate and a cylinder fixed on the support plate, the support plate is disposed on the testing platform, and the guide rail is disposed between the support plate and the air intake seat.

[0007] Preferably, the air inlet seat is provided with a first air inlet, a second air inlet and an air outlet that are interconnected, the first air inlet pipe is connected to the first air inlet, the second air inlet pipe is connected to the second air inlet, and the air outlet is disposed opposite to the fixed seat.

[0008] Preferably, a support base is provided under the first air intake pipe and the second air intake pipe respectively.

[0009] Preferably, the testing platform is further provided with a support frame, and the differential pressure gauge and pressure gauge are mounted on the support frame.

[0010] Preferably, the differential pressure gauge is connected to the second air intake pipe.

[0011] Compared with the prior art, the EGR valve body airtightness testing device of this application has the following advantages:

[0012] In use, this invention involves mounting the EGR valve body on a fixed base and pressing it firmly against the inlet seat using a drive assembly. An external air supply device then provides airflow into the EGR valve body through a first and second inlet pipe, maintaining a pressure difference between the EGR valve body's inlet and outlet. The air tightness of the EGR valve body is determined based on the flow rate at the outlet. This invention's EGR valve body air tightness testing device has a simple structure and operating principle, and facilitates convenient EGR valve body air tightness testing. Attached Figure Description

[0013] Figure 1 A schematic diagram of the structure of an EGR valve body airtightness testing device provided in this embodiment of the present invention;

[0014] Figure 2 A partial structural schematic diagram of an EGR valve body airtightness testing device provided in this embodiment of the present utility model;

[0015] Figure 3 This is a schematic diagram of the air intake seat provided in an embodiment of the present utility model. Detailed Implementation

[0016] The following detailed description illustrates the specific implementation method:

[0017] The reference numerals in the accompanying drawings include: test platform 1, fixed base 2, guide rail 3, air inlet seat 4, first air inlet pipe 5, second air inlet pipe 6, first flow meter 7, second flow meter 8, differential pressure gauge 9, pressure gauge 10, air outlet pipe 11, support plate 12, cylinder 13, first air inlet 14, second air inlet 15, air outlet 16, support base 17, support frame 18, and EGR valve body 19.

[0018] As attached Figure 1-3 As shown in the figure, this embodiment illustrates an EGR valve body airtightness testing device, including a testing platform 1 and a fixed base 2, a drive assembly, a guide rail 3, an air inlet seat 4, a first air inlet pipe 5, a second air inlet pipe 6, a first flow meter 7, a second flow meter 8, a differential pressure gauge 9, and a pressure gauge 10 mounted on the testing platform 1. The differential pressure gauge 9 is also connected to the second air inlet pipe 6.

[0019] The mounting base 2 is used to fix the EGR valve body 19. The mounting base 2 is connected to the output end of the drive assembly and is mounted on the guide rail 3. The drive assembly drives the mounting base 2 to move on the guide rail 3. The drive assembly drives the mounting base 2, which in turn drives the EGR valve body 19 on the mounting base 2 to move on the guide rail 3, realizing the clamping and releasing of the EGR valve body 19 and the intake seat 4. The guide rail 3 ensures the accuracy of the docking between the EGR valve body 19 and the intake seat 4, reducing human error.

[0020] The first air inlet pipe 5 and the second air inlet pipe 6 are respectively connected to the air inlet seat 4. The first flow meter 7 is installed on the first air inlet pipe 5 and the second flow meter 8 is installed on the second air inlet pipe 6. The fixed seat 2 is also connected to the air outlet pipe 11, and the differential pressure gauge 9 and the pressure gauge 10 are installed on the air outlet pipe 11.

[0021] Specifically, the first intake pipe 5 and the second intake pipe 6 are connected to an external air source, respectively. During testing, the airflow generated by the external air source enters the intake seat 4 through the first intake pipe 5 or the second intake pipe 6, and then exits from the outlet pipe 11 after passing through the valve body. The first flow meter 7 records the input flow rate, the differential pressure gauge 9 detects the pressure difference across the EGR valve body 19, and the pressure gauge 10 detects the output pressure. If the flow rate or pressure difference is abnormal, it is determined that there is a problem with the airtightness of the valve body.

[0022] Specifically, the drive assembly includes a support plate 12 and a cylinder 13 fixed on the support plate 12. The support plate 12 is mounted on the testing table 1, and a guide rail 3 is positioned between the support plate 12 and the air inlet seat 4. The cylinder 13 pushes the fixed seat 2 to move along the guide rail 3, causing the air inlet end of the EGR valve body 19 to seal and connect with the air outlet 16 of the air inlet seat 4. After the test is completed, the cylinder 13 retracts, the fixed seat 2 returns to its original position, and the EGR valve body 19 is removed.

[0023] The air inlet 4 is provided with a first air inlet 14, a second air inlet 15 and an air outlet 16 that are interconnected. The first air inlet pipe 5 is connected to the first air inlet 14, the second air inlet pipe 6 is connected to the second air inlet 15, and the air outlet 16 is arranged opposite to the fixed base 2.

[0024] In some embodiments, a support base 17 is provided under the first air intake pipe 5 and the second air intake pipe 6 respectively. The support base 17 ensures the accuracy of the air passage connection and reduces human error.

[0025] The testing platform 1 is also equipped with a support frame 18, and the differential pressure gauge 9 and pressure gauge 10 are mounted on the support frame 18.

[0026] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An EGR valve body airtightness testing device, characterized in that: The system includes a testing platform (1) and a fixed base (2) mounted on the testing platform (1), a drive assembly, a guide rail (3), an air inlet seat (4), a first air inlet pipe (5), a second air inlet pipe (6), a first flow meter (7), a second flow meter (8), a differential pressure gauge (9), and a pressure gauge (10). The fixed base (2) is used to fix the EGR valve body (19). The fixed base (2) is connected to the output end of the drive assembly. The fixed base (2) is mounted on the guide rail (3). The drive assembly drives the fixed base (2) to move on the guide rail (3). The first air inlet pipe (5) and the second air inlet pipe (6) are respectively connected to the air inlet seat (4). The first flow meter (7) is mounted on the first air inlet pipe (5), and the second flow meter (8) is mounted on the second air inlet pipe (6). The fixed base (2) is also connected to an air outlet pipe (11). The differential pressure gauge (9) and the pressure gauge (10) are mounted on the air outlet pipe (11).

2. The EGR valve body airtightness testing device according to claim 1, characterized in that: The drive assembly includes a support plate (12) and a cylinder (13) fixed on the support plate (12). The support plate (12) is set on the testing table (1), and the guide rail (3) is set between the support plate (12) and the air inlet seat (4).

3. The EGR valve body airtightness testing device according to claim 1, characterized in that: The air inlet seat (4) is provided with a first air inlet (14), a second air inlet (15) and an air outlet (16) that are interconnected. The first air inlet pipe (5) is connected to the first air inlet (14), the second air inlet pipe (6) is connected to the second air inlet (15), and the air outlet (16) is disposed opposite to the fixed seat (2).

4. The EGR valve body airtightness testing device according to claim 3, characterized in that: Support seats (17) are respectively provided under the first air intake pipe (5) and the second air intake pipe (6).

5. The EGR valve body airtightness testing device according to claim 1, characterized in that: The testing platform (1) is also equipped with a support frame (18), and the differential pressure gauge (9) and pressure gauge (10) are mounted on the support frame (18).

6. The EGR valve body airtightness testing device according to claim 1, characterized in that: The differential pressure gauge (9) is connected to the second air intake pipe (6).

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