EGR (Exhaust Gas Recirculation) valve with high sealing performance

Abstract

The utility model relates to the technical field of EGR valves with high sealing performance, and discloses an EGR valve with high sealing performance, which comprises a main body mechanism, a connecting mechanism is arranged on the surface of the main body mechanism, a buffer mechanism is arranged at the top of the main body mechanism, the main body mechanism comprises a bottom plate, an annular sealing ring is fixedly connected to the bottom of the bottom plate, and a sealing ring is arranged on the bottom plate. A square sealing ring is fixedly connected to the bottom of the bottom plate, an air inlet is formed in the bottom of the bottom plate, and a valve element is slidably connected to the inner wall of the air inlet. The annular sealing ring and the square sealing ring are installed on the air inlet and the air outlet respectively, waste gas can enter the air inlet through work of the device, the valve element can be jacked up due to the fact that the amount of the waste gas is large enough, the waste gas can reach the interior of the sealing cover through the air inlet at the moment, and the sealing cover is sealed. The sliding column can move through movement of the valve element, the valve system in the device can input waste gas into the gas outlet through movement of the sliding column, and the waste gas is reused.

Description

Technical Field

[0001] The utility model relates to the technical field of an EGR valve with strong sealing performance, in particular to an EGR valve with strong sealing performance. Background Art

[0002] The EGR valve is what we usually call the exhaust gas recirculation valve. The exhaust gas recirculation valve returns part of the exhaust gas produced by a diesel engine or a gasoline engine to the cylinder, thereby reducing the content of nitrogen oxides in the exhaust gas. The EGR valve needs to be connected to the intake pipe and exhaust pipe of the exhaust gas. Due to the high temperature and high air pressure of the exhaust gas, the existing EGR valve structure is relatively simple. The connection between the EGR valve and the intake pipe and exhaust pipe often leaks, and the sealing is poor, which affects the use. Therefore, we propose an EGR valve with strong sealing performance. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an EGR valve with strong sealing performance.

[0004] The utility model is implemented by the following technical scheme: an EGR valve with strong sealing performance, comprising a main body mechanism, a connecting mechanism is arranged on the surface of the main body mechanism, and a buffer mechanism is arranged on the top of the main body mechanism;

[0005] The main body mechanism includes a bottom plate, an annular sealing ring is fixedly connected to the bottom of the bottom plate, a square sealing ring is fixedly connected to the bottom of the bottom plate, an air inlet is opened at the bottom of the bottom plate, a valve core is slidably connected to the inner wall of the air inlet, and an air outlet is opened at the bottom of the bottom plate.

[0006] Through the above technical solution, the valve core is consistent in size with the air inlet, which can prevent gas from flowing into the interior of the device.

[0007] As a further improvement of the above solution, the main body mechanism includes an annular sealing ring, the annular sealing ring is fixedly connected to the surface of the air inlet, and the square sealing ring is fixedly connected to the surface of the air outlet.

[0008] As a further improvement of the above solution, the connection mechanism includes a connection plate, the connection plate is fixedly connected to the surface of the bottom plate, and the inner wall of the connection plate is fixedly connected with a connection screw hole.

[0009] As a further improvement of the above solution, the connection mechanism includes a connection plate, and there are two connection plates, and the two connection plates are symmetrically distributed with the bottom plate as the center.

[0010] As a further improvement of the above scheme, the buffer mechanism includes a sealing cover, which is fixedly connected to the top of the base plate, the inner wall of the sealing cover is fixedly connected to the support plate, the inner wall of the support plate is slidably connected to a sliding column, the top of the sliding column is fixedly connected to an elastic column, one end of the elastic column away from the sliding column is fixedly connected to an anti-collision column, and the end of the sealing cover away from the base plate is fixedly connected to a cover.

[0011] As a further improvement of the above solution, the buffer mechanism includes an anti-collision column, and the anti-collision column is arranged on the inner wall of the sealing cover.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model installs an annular sealing ring and a square sealing ring with the air inlet and the air outlet respectively. When the device is working, exhaust gas will enter the air inlet. At this time, the amount of exhaust gas is enough to lift the valve core. At this time, the exhaust gas will reach the inside of the sealing cover through the air inlet, and the movement of the valve core will cause the sliding column to move. The movement of the sliding column can enable the valve system inside the device to input the exhaust gas into the air outlet to reuse the exhaust gas. Since the air inlet and the air outlet are often working, the sealing effect is poor. At this time, the air inlet and the air outlet can be tightly connected by the annular sealing ring and the square sealing ring to prevent gas leakage.

[0014] The utility model can make the elastic column move upwards through the movement of the sliding column, and the upward movement of the elastic column can make the anti-collision column contact and collide with the inner wall of the cover, so that the anti-collision column can prevent the device from being damaged during a long-term collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the EGR valve with strong sealing performance of the utility model;

[0016] Figure 2 This is a schematic diagram of the bottom structure of the EGR valve with strong sealing performance of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the EGR valve connecting plate with strong sealing performance of the utility model;

[0018] Figure 4 The utility model is a schematic diagram of the overall internal structure of the EGR valve sealing cover with strong sealing performance.

[0019] Description of main symbols:

[0020] 1. Main body; 101. Bottom plate; 102. Annular sealing ring; 103. Square sealing ring; 104. Air inlet; 105. Valve core; 106. Air outlet; 2. Connecting mechanism; 201. Connecting plate; 202. Connecting screw hole; 3. Buffering mechanism; 301. Sealing cover; 302. Support plate; 303. Sliding column; 304. Elastic column; 305. Anti-collision column; 306. Cover. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0022] Example:

[0023] Please combine Figure 1-4 , an EGR valve with strong sealing performance in this embodiment includes a main body mechanism 1, a connecting mechanism 2 is arranged on the surface of the main body mechanism 1, and a buffer mechanism 3 is arranged on the top of the main body mechanism 1;

[0024] The main body mechanism 1 includes a bottom plate 101, an annular sealing ring 102 is fixedly connected to the bottom of the bottom plate 101, a square sealing ring 103 is fixedly connected to the bottom of the bottom plate 101, an air inlet 104 is provided at the bottom of the bottom plate 101, a valve core 105 is slidably connected to the inner wall of the air inlet 104, an air outlet 106 is provided at the bottom of the bottom plate 101, the main body mechanism 1 includes an annular sealing ring 102, the annular sealing ring 102 is fixedly connected to the surface of the air inlet 104, the square sealing ring 103 is fixedly connected to the surface of the air outlet 106, and the annular sealing ring 102 and the square sealing ring 103 are respectively installed with the air inlet 104 and the air outlet 106, through the device During operation, waste gas will enter the air inlet 104. At this time, the amount of waste gas is large enough to lift the valve core 105. At this time, the waste gas will reach the inside of the sealing cover 301 through the air inlet 104. The movement of the valve core 105 will move the sliding column 303. The movement of the sliding column 303 can enable the valve system inside the device to input the waste gas into the air outlet 106 to reuse the waste gas. Since the air inlet 104 and the air outlet 106 are often working, the sealing effect is poor. At this time, the annular sealing ring 102 and the square sealing ring 103 can be used to tightly connect the air inlet 104 and the air outlet 106 to prevent gas leakage.

[0025] The connecting mechanism 2 includes a connecting plate 201, which is fixedly connected to the surface of the base plate 101. The inner wall of the connecting plate 201 is fixedly connected with a connecting screw hole 202. The connecting mechanism 2 includes a connecting plate 201. There are two connecting plates 201, and the two connecting plates 201 are symmetrically distributed with the base plate 101 as the center.

[0026] The buffer mechanism 3 includes a sealing cover 301, which is fixedly connected to the top of the base plate 101, a support plate 302 is fixedly connected to the inner wall of the sealing cover 301, a sliding column 303 is slidably connected to the inner wall of the support plate 302, an elastic column 304 is fixedly connected to the top of the sliding column 303, an end of the elastic column 304 away from the sliding column 303 is fixedly connected to an anti-collision column 305, and an end of the sealing cover 301 away from the base plate 101 is fixedly connected to a cover 306, and the buffer mechanism 3 includes an anti-collision column 305, which is arranged on the inner wall of the sealing cover 301, the movement of the sliding column 303 will cause the elastic column 304 to move upward, and the upward movement of the elastic column 304 will cause the anti-collision column 305 to contact and collide with the inner wall of the cover 306, so that the anti-collision column 305 can prevent the device from being damaged during a long-term collision.

[0027] The implementation principle of an EGR valve with strong sealing performance in the embodiment of the present application is as follows: by installing the annular sealing ring 102 and the square sealing ring 103 respectively with the air inlet 104 and the air outlet 106, exhaust gas will enter the air inlet 104 through the operation of the device. At this time, the amount of exhaust gas is sufficient to lift the valve core 105. At this time, the exhaust gas will reach the inside of the sealing cover 301 through the air inlet 104, and the movement of the valve core 105 will cause the sliding column 303 to move. The movement of the sliding column 303 can enable the valve system inside the device to input the exhaust gas to the air outlet 1 06, the exhaust gas is reused. Since the air inlet 104 and the air outlet 106 are often in operation, the sealing effect is poor. At this time, the air inlet 104 and the air outlet 106 can be tightly connected through the annular sealing ring 102 and the square sealing ring 103 to prevent gas leakage. The movement of the sliding column 303 will cause the elastic column 304 to move upward. The upward movement of the elastic column 304 will cause the anti-collision column 305 to contact and collide with the inner wall of the cover 306. The anti-collision column 305 can prevent the device from being damaged during a long-term collision.

[0028] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An EGR valve with strong sealing performance, characterized in that: It comprises a main body mechanism (1), a connection mechanism (2) is arranged on the surface of the main body mechanism (1), and a buffer mechanism (3) is arranged on the top of the main body mechanism (1); The main body structure (1) comprises a bottom plate (101), an annular sealing ring (102) is fixedly connected to the bottom of the bottom plate (101), a square sealing ring (103) is fixedly connected to the bottom of the bottom plate (101), an air inlet (104) is provided at the bottom of the bottom plate (101), a valve core (105) is slidably connected to the inner wall of the air inlet (104), and an air outlet (106) is provided at the bottom of the bottom plate (101).

2. The EGR valve with strong sealing performance as claimed in claim 1, characterized in that: The main body mechanism (1) comprises an annular sealing ring (102), wherein the annular sealing ring (102) is fixedly connected to the surface of the air inlet (104), and the square sealing ring (103) is fixedly connected to the surface of the air outlet (106).

3. The EGR valve with strong sealing performance as claimed in claim 1, characterized in that: The connection mechanism (2) comprises a connection plate (201), the connection plate (201) is fixedly connected to the surface of the bottom plate (101), and the inner wall of the connection plate (201) is fixedly connected with a connection screw hole (202).

4. The EGR valve with strong sealing performance as claimed in claim 3, characterized in that: The connection mechanism (2) comprises a connection plate (201), and there are two connection plates (201). The two connection plates (201) are symmetrically distributed with the bottom plate (101) as the center.

5. The EGR valve with strong sealing performance as claimed in claim 1, characterized in that: The buffer mechanism (3) comprises a sealing cover (301), the sealing cover (301) is fixedly connected to the top of the base plate (101), the inner wall of the sealing cover (301) is fixedly connected to a support plate (302), the inner wall of the support plate (302) is slidably connected to a sliding column (303), the top of the sliding column (303) is fixedly connected to an elastic column (304), one end of the elastic column (304) away from the sliding column (303) is fixedly connected to an anti-collision column (305), and one end of the sealing cover (301) away from the base plate (101) is fixedly connected to a cover (306).

6. The EGR valve with strong sealing performance as claimed in claim 5, characterized in that: The buffer mechanism (3) comprises an anti-collision column (305), and the anti-collision column (305) is arranged on the inner wall of the sealing cover (301).

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