Sealed connection structure of exhaust gas purification device

Abstract

The utility model discloses a sealing connection structure of an exhaust gas purification device, including an exhaust gas purifier, a first connecting male head, a connecting female head and a second connecting male head, wherein the first connecting male head and the second connecting male head are arranged in the same manner, the first connecting male head comprises a first flange, one end of the first flange is fixedly connected with a plug-in tube, the end of the first flange away from the plug-in tube is fixedly connected with a first connecting tube, the side of the first flange close to the plug-in tube is fixedly connected with a plug-in sealing ring, and the outer side of the plug-in tube is evenly provided with limiting grooves. The utility model adopts a multiple sealing design, including a fluororubber sealing ring, a fluororubber sealing ring and a plug-in sealing ring, and these sealing elements can work together to provide an excellent sealing effect and effectively prevent exhaust gas leakage, and the beveled reverse scale baffle arranged on the inner side of the fluororubber sealing ring further enhances the sealing performance.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas purification devices, in particular to a sealing connection structure of a tail gas purification device. Background Art

[0002] The exhaust gas purification device is an important equipment for reducing automobile exhaust pollution. Its performance and stability directly affect the quality of exhaust emissions. In the existing exhaust gas purification devices, the sealing of the connecting parts is a key issue. If there is a leak at the connection, it will not only reduce the purification efficiency, but also may cause harm to the environment and human health. Therefore, a sealing connection structure of the exhaust gas purification device is urgently needed to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide a sealing connection structure of an exhaust gas purification device to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sealing connection structure of an exhaust gas purification device, comprising an exhaust gas purifier, a first connecting male head, a connecting female head and a second connecting male head, the first connecting male head comprising a first flange, one end of the first flange is fixedly connected to a plug-in tube, the end of the first flange away from the plug-in tube is fixedly connected to a first connecting pipe, the side of the first flange close to the plug-in tube is fixedly connected to a plug-in sealing ring, and the outer side of the plug-in tube is evenly provided with limiting grooves.

[0005] Preferably, the connecting female head includes a second flange, a second connecting pipe is fixedly connected to one side of the second flange, an outer sealing ring is fixedly connected to the outer side of the second flange, a sealing groove is provided on the side of the second flange away from the second connecting pipe, limiting rods are evenly provided on the inner side of the second connecting pipe, a fluororubber sealing ring is provided on the inner side of the outer sealing ring, and a fluororubber sealing ring is provided on the side of the second flange close to the sealing groove.

[0006] Preferably, the inner side of the fluororubber sealing ring is evenly provided with reverse scale baffles, the reverse scale baffles are beveled, and the beveled end of the reverse scale baffle is the end away from the second flange.

[0007] Preferably, the limiting rod and the limiting groove match each other.

[0008] Preferably, the plug-in sealing ring is movably plugged into the inner side of the sealing groove.

[0009] Preferably, the fluororubber sealing ring is arranged between the second flange and the first flange, and the fluororubber sealing ring is located on the outside of the plug-in sealing ring.

[0010] Preferably, the first flange and the second flange are fixedly installed by bolts.

[0011] Preferably, the first connecting male head and the second connecting male head are configured identically, the connecting female head is fixedly connected to the input end of the exhaust gas purifier through the second connecting pipe, the first connecting male head is fixedly connected to the output end of the exhaust gas purifier through the first connecting pipe on the first connecting male head, and the second connecting male head is fixedly connected to the exhaust gas discharge end through the first connecting pipe on the second connecting male head.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The utility model adopts a multiple sealing design, including a fluororubber sealing ring, a fluororubber sealing ring and a plug-in sealing ring. These sealing elements can work together to provide an excellent sealing effect and effectively prevent exhaust gas leakage. The beveled reverse scale baffle arranged on the inner side of the fluororubber sealing ring further enhances the sealing performance. During the exhaust gas transportation process, the negative pressure formed between the plug-in tube and the second connecting tube is utilized to reduce the leakage of exhaust gas from the gap of the flange. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the first connecting male head in the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the connecting female head in the utility model;

[0017] Figure 4 It is a schematic diagram of the cross-section structure of the female connection head in the utility model;

[0018] Figure 5 This is a schematic structural diagram of the cutaway portion A of the female connection head in the present invention.

[0019] In the figure: 1-exhaust purifier, 2-first connecting male head, 3-connecting female head, 4-second connecting male head, 5-first flange, 6-plug-in sealing ring, 7-plug-in tube, 8-limiting groove, 9-first connecting pipe, 10-second flange, 11-fluororubber sealing ring, 12-fluororubber sealing ring, 13-outer sealing ring, 14-second connecting pipe, 15-sealing groove, 16-limiting rod, 17-reverse scale baffle. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-5 The utility model provides an embodiment: a sealing connection structure of an exhaust gas purification device, including an exhaust gas purifier 1, a first connecting male head 2, a connecting female head 3 and a second connecting male head 4, the first connecting male head 2 includes a first flange 5, one end of the first flange 5 is fixedly connected to a plug-in tube 7, the end of the first flange 5 away from the plug-in tube 7 is fixedly connected to a first connecting pipe 9, the side of the first flange 5 close to the plug-in tube 7 is fixedly connected to a plug-in sealing ring 6, and the outer side of the plug-in tube 7 is evenly provided with limiting grooves 8.

[0022] The connecting female part 3 includes a second flange 10, one side of the second flange 10 is fixedly connected to a second connecting pipe 14, the outer side of the second flange 10 is fixedly connected to an outer sealing ring 13, a sealing groove 15 is provided on the side of the second flange 10 away from the second connecting pipe 14, and the plug-in sealing ring 6 is movably plugged into the inner side of the sealing groove 15, so as to increase the contact area between the first flange 5 and the second flange 10 and reduce the leakage of exhaust gas, the inner side of the second connecting pipe 14 is evenly provided with limiting rods 16, the limiting rods 16 and the limiting groove 8 match, the inner side of the outer sealing ring 13 is provided with a fluororubber sealing ring 11, and the side of the second flange 10 close to the sealing groove 15 is provided with a fluororubber sealing ring 12.

[0023] The inner side of the fluororubber sealing ring 11 is evenly provided with reverse scale baffles 17, which are beveled, and the beveled end of the reverse scale baffle 17 is the end away from the second flange 10. The multiple blocking of the reverse scale baffles 17 can effectively reduce exhaust gas leakage.

[0024] The fluororubber sealing ring 12 is arranged between the second flange 10 and the first flange 5, and the fluororubber sealing ring 12 is located on the outside of the plug-in sealing ring 6. The first flange 5 and the second flange 10 are fixed and installed by bolts. The first flange 5 and the second flange 10 are fixed and squeezed by bolts to squeeze the fluororubber sealing ring 12. The fluororubber sealing ring 12 is squeezed and deformed to increase the contact area with the first flange 5 and the second flange 10, thereby enhancing the sealing effect.

[0025] The first connecting male head 2 and the second connecting male head 4 are configured in the same manner, the connecting female head 3 is fixedly connected to the input end of the exhaust gas purifier 1 through the second connecting pipe 14, the first connecting male head 2 is fixedly connected to the output end of the exhaust gas purifier 1 through the first connecting pipe 9 on the first connecting male head 2, and the second connecting male head 4 is fixedly connected to the exhaust gas discharge end through the first connecting pipe 9 on the second connecting male head 4.

[0026] Working principle: During use, first place the fluororubber sealing ring 12 on the side of the second flange 10 away from the second connecting pipe 14, then embed the fluororubber sealing ring 11 into the inner side of the outer sealing ring 13, and use external force to plug the connecting female head 3 into the second connecting male head 4. At this time, the plug-in tube 7 is plugged into the inner side of the second connecting pipe 14, and the limiting groove 8 is plugged into the outer side of the limiting rod 16. The fluororubber sealing ring 11 is located on the outer side of the first flange 5 and on the inner side of the outer sealing ring 13. The plug-in sealing ring 6 is plugged into the inner side of the sealing groove 15. When exhaust gas is discharged, the exhaust gas is transported to the inside of the plug-in tube 7 through the first connecting tube 9 on the second connecting male head 4, and the exhaust gas is transported to the first connecting tube 9 on the second connecting male head 4. The interior of the second connecting pipe 14 is input into the interior of the exhaust gas purifier 1. During the exhaust gas transportation process, it extends to the interior of the second connecting pipe 14 through the plug-in pipe 7, and the exhaust gas is transported from the plug-in pipe 7 to the second connecting pipe 14, so that a negative pressure is formed between the plug-in pipe 7 and the second connecting pipe 14, thereby reducing the exhaust gas from the gap between the first flange 5 and the second flange 10. At the same time, the plug-in sealing ring 6 is plugged into the inside of the sealing groove 15 to reduce the exhaust gas discharge, and then sealed by the fluororubber sealing ring 12 and the fluororubber sealing ring 11, and finally sealed by evenly arranging the beveled reverse scale baffle 17 on the inner side of the fluororubber sealing ring 11, so as to achieve sealing and blocking of the exhaust gas and reduce exhaust gas leakage.

[0027] 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. A sealing connection structure of an exhaust gas purification device, comprising an exhaust gas purifier (1), a first connecting male head (2), a connecting female head (3) and a second connecting male head (4), characterized in that: The first connecting male part (2) comprises a first flange (5), one end of the first flange (5) is fixedly connected to a plug-in tube (7), the end of the first flange (5) away from the plug-in tube (7) is fixedly connected to a first connecting tube (9), the side of the first flange (5) close to the plug-in tube (7) is fixedly connected to a plug-in sealing ring (6), and the outer side of the plug-in tube (7) is evenly provided with limiting grooves (8); The connecting female part (3) comprises a second flange (10), a second connecting pipe (14) is fixedly connected to one side of the second flange (10), an outer sealing ring (13) is fixedly connected to the outer side of the second flange (10), a sealing groove (15) is provided on the side of the second flange (10) away from the second connecting pipe (14), limiting rods (16) are evenly provided on the inner side of the second connecting pipe (14), a fluororubber sealing ring (11) is provided on the inner side of the outer sealing ring (13), and a fluororubber sealing ring (12) is provided on the side of the second flange (10) close to the sealing groove (15).

2. The sealing connection structure of an exhaust gas purification device according to claim 1, characterized in that: The inner side of the fluororubber sealing ring (11) is evenly provided with reverse scale baffles (17), the reverse scale baffles (17) are beveled, and the beveled end of the reverse scale baffle (17) is the end away from the second flange (10).

3. The sealing connection structure of an exhaust gas purification device according to claim 1, characterized in that: The limiting rod (16) matches the limiting groove (8).

4. The sealing connection structure of an exhaust gas purification device according to claim 1, characterized in that: The plug-in sealing ring (6) is movably plugged into the inner side of the sealing groove (15).

5. The sealing connection structure of an exhaust gas purification device according to claim 1, characterized in that: The fluororubber sealing ring (12) is arranged between the second flange (10) and the first flange (5), and the fluororubber sealing ring (12) is located outside the plug-in sealing ring (6).

6. The sealing connection structure of an exhaust gas purification device according to claim 1, characterized in that: The first flange (5) and the second flange (10) are fixedly mounted by means of bolts.

7. The sealing connection structure of an exhaust gas purification device according to claim 1, characterized in that: The first connecting male head (2) and the second connecting male head (4) are configured identically; the connecting female head (3) is fixedly connected to the input end of the exhaust gas purifier (1) via the second connecting pipe (14); the first connecting male head (2) is fixedly connected to the output end of the exhaust gas purifier (1) via the first connecting pipe (9) on the first connecting male head (2); and the second connecting male head (4) is fixedly connected to the exhaust gas discharge end via the first connecting pipe (9) on the second connecting male head (4).

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