A high-temperature resistant diesel engine EGR valve body

Abstract

This utility model relates to the technical field of diesel engine exhaust gas recirculation systems, and discloses a high-temperature resistant diesel engine EGR valve body, including an EGR valve body body. A connection port is installed on the surface of the EGR valve body body. An auxiliary device is provided on the surface of the EGR valve body body, including a left heat shield that is slidably connected to the surface of the EGR valve body body. A right heat shield is slidably connected to the surface of the left heat shield and is slidably connected to the surface of the EGR valve body body. The left heat shield and the right heat shield have several heat dissipation holes on their respective surfaces. This high-temperature resistant diesel engine EGR valve body avoids the situation where the EGR valve body body is typically installed near the engine exhaust pipe, resulting in a continuously high temperature and potential damage to transmission components due to high temperatures.

Description

Technical Field

[0001] This utility model relates to the technical field of diesel engine exhaust gas recirculation systems, and in particular to a high-temperature resistant diesel engine EGR valve body. Background Technology

[0002] Exhaust gas recirculation (EGR) systems are key devices for reducing nitrogen oxide emissions from diesel engines, and the EGR valve body, as the core component of the EGR system, is mainly used to control the amount of engine exhaust gas recirculated.

[0003] Regarding the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: Since the engine exhaust pipe generates a lot of heat during operation, the existing EGR valve body is usually installed close to the engine exhaust pipe, which causes the EGR valve body to be in a high-temperature environment for a long time. Under the action of high temperature, the transmission components inside the EGR valve body (such as valve core, valve stem, etc.) are prone to material aging, deformation or jamming and other damage problems. This will not only affect the control accuracy of the EGR valve body, but also shorten the service life of the EGR valve body, and even cause the EGR system to fail, thereby affecting the emission performance and operational stability of the diesel engine. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the existing technology has the disadvantage that the EGR valve body is usually installed near the engine exhaust pipe, which causes the EGR valve body to maintain a high temperature, resulting in damage to the transmission components due to high temperature. To this end, we propose a high-temperature resistant diesel engine EGR valve body.

[0005] To achieve the above objectives, this application adopts the following technical solution: a high-temperature resistant diesel engine EGR valve body, comprising an EGR valve body body, a connection port installed on the surface of the EGR valve body body, an auxiliary device provided on the surface of the EGR valve body body, the auxiliary device comprising a left heat shield, the left heat shield being slidably connected to the surface of the EGR valve body body, a right heat shield being slidably connected to the surface of the left heat shield, the right heat shield being slidably connected to the surface of the EGR valve body body, a plurality of heat dissipation holes being opened on the surface of the left heat shield, a plurality of heat dissipation holes being opened on the surface of the right heat shield, four support rods being fixedly connected to the surface of the left heat shield, the four support rods being grouped in pairs, a push plate being slidably connected to the arc surfaces of two support rods, a limiting rod being slidably inserted into the push plate, a circular plate being fixedly connected to one end of the limiting rod, a plurality of limiting holes being opened on the surface of the left heat shield, and a plurality of limiting holes being opened on the surface of the right heat shield.

[0006] Preferably, the arc surface of the limiting rod is fitted with a spring, and the two ends of the spring are fixedly connected to the circular plate and the push plate, respectively.

[0007] Preferably, the arc surface of the support rod is rotatably connected to a rotating ring, the surface of the rotating ring is fixedly connected to the push plate, and the surface of the left heat insulation cover is provided with several recycling grooves.

[0008] Preferably, four positioning plates are fixedly connected to the surface of the left heat insulation cover, and the size of the limiting rod is adapted to the size of the limiting hole.

[0009] Preferably, the surface of the connector is provided with a protective device, the protective device including two support plates, the two support plates being fixedly connected to the surface of the connector, a rotating rod being fixedly connected to one side of the two support plates that are close to each other, a protective cover being rotatably connected to the arc surface of the rotating rod, a connecting frame being fixedly connected to one side of the support plate, a fixing rod being slidably inserted into the connecting frame, and a fixing hole being opened on the surface of the protective cover.

[0010] Preferably, a baffle is fixedly connected to the arc surface of the fixing rod, and the size of the fixing rod is adapted to the size of the fixing hole on the surface of the protective cover.

[0011] Preferably, the arc surface of the rotating rod is fitted with two torsion springs, and the two ends of the torsion springs are fixedly connected to the support plate and the protective cover, respectively.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] In this invention, by setting an auxiliary device, the EGR valve body is made resistant to high temperatures, thus avoiding the situation where the EGR valve body is usually installed near the engine exhaust pipe, which would cause the transmission components to be damaged due to high temperature. This improves the practicality of the device.

[0014] In this utility model, by setting a protective device, the connection port is protected, which avoids the connection port being damaged by collisions and scratches during vehicle maintenance, thus preventing the EGR valve body from being unable to connect stably with other components, thereby improving the practicality of the device. Attached Figure Description

[0015] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts:

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the auxiliary device in this utility model;

[0018] Figure 3 In this utility model Figure 2 Enlarged view of point A;

[0019] Figure 4 This is a schematic diagram of the protective device in this utility model;

[0020] Figure 5 In this utility model Figure 4 Enlarged view of point B.

[0021] Legend: 1. EGR valve body; 2. Connection port; 3. Auxiliary device; 4. Protective device; 301. Left heat insulation cover; 302. Right heat insulation cover; 303. Support rod; 304. Rotating ring; 305. Push plate; 306. Limiting rod; 307. Spring; 308. Circular plate; 309. Positioning plate; 310. Limiting hole; 311. Recovery trough; 41. Support plate; 42. Rotating rod; 43. Torsion spring; 44. Protective cover; 45. Connecting frame; 46. Fixing rod; 47. Baffle. Detailed Implementation

[0022] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0023] Reference Figure 1 As shown, this utility model provides a technical solution: a high-temperature resistant diesel engine EGR valve body, including an EGR valve body body 1, a connection port 2 installed on the surface of the EGR valve body body 1, and an auxiliary device 3 provided on the surface of the EGR valve body body 1, achieving the effect of high-temperature resistance for the EGR valve body body 1. This avoids the situation where the EGR valve body body 1 is usually installed near the engine exhaust pipe, resulting in a sustained high temperature of the EGR valve body body 1, which could lead to damage to the transmission components due to high temperature, thus improving the practicality of the device. A protective device 4 is provided on the surface of the connection port 2, achieving the effect of protecting the connection port 2. This prevents the connection port 2 from being damaged by collisions and scratches during vehicle maintenance, thus avoiding the situation where the EGR valve body body 1 is difficult to connect stably with other components, further improving the practicality of the device.

[0024] The specific setup and function of its auxiliary device 3 and protective device 4 will be described in detail below.

[0025] Reference Figure 2 and Figure 3As shown in this embodiment: the auxiliary device 3 includes a left heat insulation cover 301, which is slidably connected to the surface of the EGR valve body 1. A right heat insulation cover 302 is slidably connected to the surface of the left heat insulation cover 301, and the right heat insulation cover 302 is slidably connected to the surface of the EGR valve body 1. The surface of the left heat insulation cover 301 has several heat dissipation holes, and the surface of the right heat insulation cover 302 has several heat dissipation holes. Four support rods 303 are fixedly connected to the surface of the left heat insulation cover 301. The four support rods 303 are arranged in pairs, and a push plate 305 is slidably connected to the arc surface of each of the two support rods 303. A limiting rod 306 is slidably inserted into the push plate 305, and one end of the limiting rod 306 is fixedly connected to a circular... Plate 308, the surface of the left heat shield 301 has several limiting holes 310, the surface of the right heat shield 302 has several limiting holes 310, the arc surface of the limiting rod 306 is fitted with a spring 307, the two ends of the spring 307 are fixedly connected to the circular plate 308 and the push plate 305 respectively. When the circular plate 308 is released, the rebound force of the spring 307 drives the circular plate 308, and the circular plate 308 drives the limiting rod 306 to slide within the push plate 305 until the limiting rod 306 is inserted into the limiting hole 310, achieving the effect of stable connection of the limiting rod 306, avoiding the situation where the limiting rod 306 disengages from the right heat shield 302 due to shaking caused by external factors, and improving the stability of the device. Qualitatively, a rotating ring 304 is rotatably connected to the arc surface of the support rod 303. The surface of the rotating ring 304 is fixedly connected to the push plate 305. Several recycling grooves 311 are opened on the surface of the left heat insulation cover 301. The limiting rod 306 is pulled out from the limiting hole 310, and then the rotating ring 304 is rotated. The rotating ring 304 drives the push plate 305 to rotate on the arc surface of the support rod 303. The push plate 305 drives the limiting rod 306, and the limiting rod 306 drives the circular plate 308 until the limiting rod 306 is perpendicular to the recycling groove 311. The circular plate 308 pushes the circular plate 308, and the circular plate 308 drives the limiting rod 306 to slide within the push plate 305 until the limiting rod 306 is inserted into the recycling groove 311, thus achieving the goal of limiting the rod 306. The rotational retraction of rod 306 during disassembly avoids the shaking that would cause the limiting rod 306 to slide back and forth within the push plate 305, thus preventing workers from having to continuously pull the limiting rod 306. Four positioning plates 309 are fixedly connected to the surface of the left heat shield 301. The size of the limiting rod 306 is matched with the size of the limiting hole 310. Rotating the rotating ring 304 causes the push plate 305 to rotate on the arc surface of the support rod 303. The push plate 305 drives the limiting rod 306, which in turn drives the circular plate 308 until the limiting rod 306 touches the positioning plate 309, achieving rapid rotational retraction of the limiting rod 306 and thus speeding up the disassembly process.

[0026] Reference Figure 4 and Figure 5As shown, specifically, the protective device 4 includes two support plates 41, which are fixedly connected to the surface of the connecting socket 2. A rotating rod 42 is fixedly connected to one side of the two support plates 41 that is close to each other. A protective cover 44 is rotatably connected to the arc surface of the rotating rod 42. A connecting frame 45 is fixedly connected to one side of the support plate 41. A fixing rod 46 is slidably inserted into the connecting frame 45. A fixing hole is opened on the surface of the protective cover 44. A baffle 47 is fixedly connected to the arc surface of the fixing rod 46. The size of the fixing rod 46 is adapted to the size of the fixing hole on the surface of the protective cover 44. Pulling the fixing rod 46 causes the baffle 47 to slide within the connecting frame 45 until the baffle 47 touches the connecting... The bracket 45 effectively blocks the fixed rod 46, preventing it from slipping out of the bracket 45 due to external factors and causing damage. Two torsion springs 43 are fitted on the arc surface of the rotating rod 42. The two ends of the torsion springs 43 are fixedly connected to the support plate 41 and the protective cover 44, respectively. After the protective cover 44 is released, the torque of the torsion springs 43 drives the protective cover 44 to rotate on the arc surface of the rotating rod 42 until the protective cover 44 is fully opened, achieving the effect of automatic reset of the protective cover 44. This reduces the number of steps for operators, increases their work efficiency, and improves the convenience of the device.

[0027] Working principle: When it is necessary to install the left heat insulation cover 301 and the right heat insulation cover 302, align the left heat insulation cover 301 and the right heat insulation cover 302. There is an air gap between the left heat insulation cover 301 and the right heat insulation cover 302 and the EGR valve body 1. Pull the limiting rod 306 out of the recovery groove 311, and then rotate the rotating ring 304. The rotating ring 304 drives the push plate 305 to rotate on the arc surface of the support rod 303. The push plate 305 drives the limiting rod 306, and the limiting rod 306 drives the circular plate 308 until the limiting rod 306 is perpendicular to the limiting hole 310. Release the circular plate 308. The rebound force of the spring 307 drives the circular plate 308. The circular plate 308 drives the limiting rod 306 to slide in the push plate 305 until the limiting rod 306 is inserted into the limiting hole 310. When it is necessary to enter... During disassembly, the limiting rod 306 is pulled out from the limiting hole 310, and then the rotating ring 304 is rotated. The rotating ring 304 drives the push plate 305 to rotate on the arc surface of the support rod 303. The push plate 305 drives the limiting rod 306, and the limiting rod 306 drives the circular plate 308 until the limiting rod 306 touches the positioning plate 309, pushing the circular plate 308. The circular plate 308 drives the limiting rod 306 to slide in the push plate 305 until the limiting rod 306 is inserted into the recycling groove 311. This achieves the effect of high temperature resistance for the EGR valve body 1, avoiding the situation where the EGR valve body 1 is usually installed near the engine exhaust pipe, resulting in the EGR valve body 1 being continuously at a high temperature, which could cause damage to the transmission components due to high temperature. This improves the practicality of the device.

[0028] When the vehicle is under maintenance, the protective cover 44 is pushed to rotate on the arc surface of the rotating rod 42 until the protective cover 44 fits against the connecting socket 2. Then, the fixing rod 46 is pushed to slide within the connecting frame 45 until the fixing rod 46 is inserted into the fixing hole on the surface of the protective cover 44. When protection is not needed, the fixing rod 46 is pulled, and the fixing rod 46 drives the baffle 47 to slide within the connecting frame 45 until the baffle 47 touches the connecting frame 45. After the fixing of the protective cover 44 is released, the torque of the torsion spring 43 drives the protective cover 44 to rotate on the arc surface of the rotating rod 42 until the protective cover 44 is fully opened. This achieves the effect of protecting the connecting socket 2, avoiding damage to the connecting socket 2 due to collisions and scratches during vehicle maintenance, which would make it difficult for the EGR valve body 1 to be stably connected with other components, thus improving the practicality of the device.

[0029] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A high-temperature resistant diesel engine EGR valve body, characterized in that, The system includes an EGR valve body (1), on the surface of which a connection socket (2) is installed. An auxiliary device (3) is provided on the surface of the EGR valve body (1). The auxiliary device (3) includes a left heat shield (301), which is slidably connected to the surface of the EGR valve body (1). A right heat shield (302) is slidably connected to the surface of the left heat shield (301), and is slidably connected to the surface of the EGR valve body (1). The surface of the left heat shield (301) has several heat dissipation holes. The surface of the left heat shield (302) has several heat dissipation holes. The surface of the left heat shield (301) is fixedly connected to four support rods (303). The four support rods (303) are in pairs. The arc surfaces of the two support rods (303) are slidably connected to push plates (305). A limiting rod (306) is slidably inserted in the push plate (305). One end of the limiting rod (306) is fixedly connected to a circular plate (308). The surface of the left heat shield (301) has several limiting holes (310). The surface of the right heat shield (302) has several limiting holes (310).

2. The high-temperature resistant diesel engine EGR valve body according to claim 1, characterized in that: The arc surface of the limiting rod (306) is fitted with a spring (307), and the two ends of the spring (307) are fixedly connected to the circular plate (308) and the push plate (305) respectively.

3. The high-temperature resistant diesel engine EGR valve body according to claim 1, characterized in that: The support rod (303) has a rotating ring (304) rotatably connected to its arc surface. The surface of the rotating ring (304) is fixedly connected to the push plate (305). The surface of the left heat insulation cover (301) is provided with several recycling grooves (311).

4. The high-temperature resistant diesel engine EGR valve body according to claim 1, characterized in that: Four positioning plates (309) are fixedly connected to the surface of the left heat insulation cover (301), and the size of the limiting rod (306) is adapted to the size of the limiting hole (310).

5. The high-temperature resistant diesel engine EGR valve body according to claim 1, characterized in that: The surface of the connection socket (2) is provided with a protective device (4). The protective device (4) includes two support plates (41). The two support plates (41) are fixedly connected to the surface of the connection socket (2). A rotating rod (42) is fixedly connected to one side of the two support plates (41) that are close to each other. A protective cover (44) is rotatably connected to the arc surface of the rotating rod (42). A connecting frame (45) is fixedly connected to one side of the support plate (41). A fixing rod (46) is slidably inserted in the connecting frame (45). A fixing hole is opened on the surface of the protective cover (44).

6. The high-temperature resistant diesel engine EGR valve body according to claim 5, characterized in that: The arc surface of the fixing rod (46) is fixedly connected to the baffle (47), and the size of the fixing rod (46) is adapted to the size of the fixing hole on the surface of the protective cover (44).

7. The high-temperature resistant diesel engine EGR valve body according to claim 5, characterized in that: The rotating rod (42) has two torsion springs (43) on its arc surface. The two ends of the torsion springs (43) are fixedly connected to the support plate (41) and the protective cover (44) respectively.

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