Engine exhaust pipe sealing ring with multi-layer composite structure

Abstract

The utility model relates to the technical field of sealing rings, in particular to an engine exhaust pipe sealing ring with a multi-layer composite structure, which comprises a shaping support ring, an elastic washer is sleeved on the outer side of the shaping support ring, elastic air bags are uniformly designed on the outer sides of the two ends of the elastic washer, and a heat-resistant sleeve gasket and the elastic washer are fixedly adhered to each other. The outer surface of the elastic washer is attached to the inner surface of the sealing washer, a heat-resisting sleeve gasket is installed on the outer side of the elastic washer, a combined lantern ring is clamped on the outer side of the shaping supporting ring, positioning connecting rods are fixedly arranged on the periphery of the combined lantern ring, the outer side of each positioning connecting rod is sleeved with a sealing sleeve, and the sealing washer is arranged on the inner side of each sealing sleeve. The air bag type elastic gasket is adopted to adapt to the change of the structure connection distance to a small extent, the sealing effect during external force deformation resistance during exhaust pipe connection is improved, meanwhile, the detachable sealing sleeve is used, the diversity and convenience of device use are improved, and the air tightness during structure use is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sealing ring technical field, in particular to a kind of engine exhaust pipe sealing ring with multilayer composite structure. BACKGROUND

[0002] Engine exhaust pipe sealing ring is the important component in engine exhaust system, and the main role of engine exhaust pipe sealing ring is to seal exhaust gas, to prevent high-temperature gas from connecting place leakage after combustion.It is usually assembled between exhaust pipe and cylinder head exhaust port, to ensure the integrity and effectiveness of exhaust system.

[0003] The utility model provides a kind of high-temperature anti-sticking exhaust pipe sealing ring that can prevent impact.The utility model discloses a kind of high-temperature anti-sticking exhaust pipe sealing ring, including sealing ring, heat insulation ring and support sheet, the inside of sealing ring is connected with the heat insulation ring for heat insulation, the inside of heat insulation ring is connected with the support sheet for supporting heat insulation ring and sealing ring, the surface of sealing ring is coated with anti-sticking layer.Under the action of support sheet, sealing ring is subjected to pressure or impact, support sheet will support sealing ring and heat insulation ring, play the role of support, avoid the sealing ring to be subjected to pressure and be deformed and be flat, effectively guarantee the sealing effect of the sealing ring.

[0004] The above-mentioned device improves the strain resistance and heat insulation capacity of the sealing ring, however, when the external device is affected by external force, the connection distance between them increases, because the deformation ability of the sealing ring is poor, a connection gap may be generated, causing gas leakage. UTILITY MODEL CONTENTS

[0005] To overcome the technical defects existing in the prior art, the utility model provides an engine exhaust pipe sealing ring with multilayer composite structure, which improves the adaptability of the sealing ring to the external environment and solves the air tightness problem caused by the change of device connection distance.

[0006] The technical solution adopted by the utility model is as follows: an engine exhaust pipe sealing ring with multilayer composite structure, comprising a plastic support ring, an elastic gasket is sleeved on the outer side of the plastic support ring, a heat-resistant sleeve gasket is installed on the outer side of the elastic gasket, a combined sleeve ring is clamped on the outer side of the plastic support ring, positioning connecting rods are fixedly arranged around the combined sleeve ring, a sealing sleeve is sleeved on the outer side of the positioning connecting rods, and a sealing gasket is arranged on the inner side of the sealing sleeve.

[0007] Preferably, to improve the overall effect of the device, the elastic gasket is made of high-temperature resistant rubber material, a positioning installation groove is formed in the center position of the elastic gasket, and the plastic support ring is inlaidly installed in the inside of the positioning installation groove.

[0008] Preferably, in order to increase the fitting effect of the device and the external structure, the elastic gasket is uniformly designed with elastic air bags at both ends, the heat-resistant sleeve pad is fixedly attached to the elastic gasket, and the outer surface of the elastic gasket is attached to the inner surface of the sealing gasket.

[0009] Preferably, in order to improve the stability of the combined ring, the outer side of the shaping support ring is uniformly provided with a positioning clamping groove, and the inner side of the combined ring is uniformly designed with a positioning clamping block.

[0010] Preferably, in order to facilitate the installation and fixation of the combined ring, the outer side of the positioning clamping block is provided with a connecting receiving groove, the connecting receiving groove is internally provided with a connecting threaded hole, the positioning clamping groove is internally designed with a fixed threaded groove, and the connecting threaded hole is internally screwed with a fixed bolt.

[0011] Preferably, in order to improve the stability of the sealing sleeve, the lower end of the sealing sleeve is designed with a limiting connecting ring, the limiting connecting ring is uniformly provided with a positioning connecting hole around, and the positioning connecting hole is slidably connected with the positioning connecting rod.

[0012] Preferably, in order to improve the use effect of the sealing sleeve, the outer side of the positioning connecting rod is sleeved with a supporting spring, one end of the supporting spring is fixedly connected with the combined ring, and the other end of the supporting spring is fixedly connected with the limiting connecting ring.

[0013] Preferably, in order to enhance the connection effect between the structure and the pipeline, one end of the positioning connecting rod is fixedly welded with the combined ring, the other end of the positioning connecting rod is designed with a limiting baffle, and the outer surface of the sealing gasket is fixedly attached to the sealing sleeve.

[0014] The beneficial effects of the utility model are: the elastic gasket in the form of air bag can adapt to the change of the structure connection distance in a small range, improve the sealing effect during the resistance to external force deformation when connecting the exhaust pipe, use the detachable sealing sleeve, increase the diversity and convenience of the device, and improve the air tightness during the use of the structure. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a side sectional view structure schematic diagram of the utility model.

[0016] Figure 2 It is a whole structure schematic diagram of the utility model.

[0017] Figure 3The utility model discloses a connecting diagram of the combined sleeve ring part.

[0018] Figure 4 The utility model discloses a structure diagram of the elastic washer part.

[0019] Figure 5 The utility model discloses a structure connecting drawing of the sealing sleeve part.

[0020] Mark explanation: in drawing: 1, shaping support ring;2, elastic washer;3, heat -resistant sleeve pad;4, combined sleeve ring;5, positioning connecting rod;6, sealing sleeve;7, sealing washer;8, fixed bolt;9, support spring. Specific implementation

[0021] The utility model makes further explanation from the following combined with the attached drawing:

[0022] As Figures 1-5 The utility model provides a kind of engine exhaust pipe sealing ring with multilayer composite structure, including shaping support ring 1, the design of shaping support ring 1 ensures that sealing ring can keep stable form in installation and use process, the outside of shaping support ring 1 is equipped with elastic washer 2, when engine runs, exhaust pipe can slightly move due to vibration or temperature change, elastic washer 2 can compensate these small displacements, to keep sealing, the outside of elastic washer 2 is installed and is provided with heat -resistant sleeve pad 3, engine exhaust pipe can generate high temperature when running, heat -resistant sleeve pad 3 can protect internal elastic washer 2 and shaping support ring 1 from high temperature damage, to prolong the service life of sealing ring, the outside of shaping support ring 1 is equipped with combined sleeve ring 4, combined sleeve ring 4 provides additional structural strength for sealing ring, and help fixed other components, combined sleeve ring 4 is fixedly provided with positioning connecting rod 5 around, ensure that the parts of sealing ring can be accurately aligned when installation, and keep stable structure, the outside of positioning connecting rod 5 is equipped with sealing sleeve 6, prevent gas or liquid from the gap between connecting rod and surrounding structure leakage, the inside of sealing sleeve 6 is provided with sealing washer 7, fit between sealing sleeve 6 and positioning connecting rod 5, ensure that gas or liquid cannot leak through these small gaps.

[0023] The elastic gasket 2 is made of high-temperature-resistant rubber material, which has good thermal stability and chemical stability, can resist material aging and performance degradation caused by high temperature, and the center of the elastic gasket 2 is provided with a positioning installation groove, and the plastic support ring 1 is embedded and installed in the inside of the positioning installation groove. This design ensures the accurate positioning and firm connection between the plastic support ring 1 and the elastic gasket 2. The positioning installation groove also provides additional support to prevent the plastic support ring 1 from shifting or loosening during installation and use. The two ends of the elastic gasket 2 are evenly designed with elastic air bags. When the engine is running, the vibration or temperature change of the exhaust pipe may cause slight displacement, and the elastic air bags can compensate for these displacements while providing additional sealing pressure and cushioning capacity. The heat-resistant sleeve pad 3 is fixedly attached between the elastic gasket 2, which can prevent separation or movement between the two in a high-temperature environment, thereby maintaining the integrity and sealing performance of the sealing ring. The outer surface of the elastic gasket 2 and the inner surface of the sealing gasket 7 are attached to each other. When the sealing ring is compressed, the elasticity of the elastic gasket 2 and the expansion of the air bag will tightly press the sealing gasket 7 against the surrounding structure, forming an effective sealing barrier.

[0024] The outer side of the plastic support ring 1 is evenly provided with a positioning clamping groove, and the inner side of the combined sleeve ring 4 is evenly designed with a positioning clamping block. The positioning clamping block and the positioning clamping groove are slidably connected to each other. These positioning clamping blocks and positioning clamping grooves can be slidably connected to each other, thereby achieving accurate positioning and preliminary connection between the plastic support ring 1 and the combined sleeve ring 4. This design not only improves the convenience of installation, but also ensures the connection strength between the two. The outer side of the positioning clamping block is provided with a connecting receiving groove, and the inside of the connecting receiving groove is provided with a connecting threaded hole. This design allows the fixing bolt 8 to pass through the connecting threaded hole and be threadedly connected with the fixing threaded groove on the plastic support ring 1 or the surrounding structure. The inside of the positioning clamping groove is designed with a fixed threaded groove, and the inside of the connecting threaded hole is threadedly installed with a fixed bolt 8. The fixed bolt 8 and the fixed threaded groove are threadedly connected with each other. When the fixed bolt 8 is tightened, it will tightly connect the plastic support ring 1 and the combined sleeve ring 4 together, thereby achieving firm fixation between the two. This connection method not only provides additional structural strength, but also ensures the stability of the sealing ring during installation and use. During installation, first, the plastic support ring 1 and other components such as the elastic gasket 2 are assembled, then the positioning clamping block of the combined sleeve ring 4 is aligned with the positioning clamping groove of the plastic support ring 1 for sliding clamping, then the fixing bolt 8 is passed through the connecting threaded hole in the connecting receiving groove and screwed into the fixing threaded groove on the plastic support ring 1 or the surrounding structure, and finally, the fixing bolt 8 is tightened to form a firm connection between the plastic support ring 1 and the combined sleeve ring 4.

[0025] The lower end of the sealing sleeve 6 is designed with a limiting connection ring, which is uniformly provided with positioning connection holes around, and the positioning connection holes and the positioning connection rod 5 are slidably connected, which ensures the accurate positioning and preliminary connection between the sealing sleeve 6 and the positioning connection rod 5. The design of the limiting connection ring also provides additional support and enhances the overall structural strength of the sealing ring. The outer side of the positioning connection rod 5 is sleeved with a supporting spring 9, one end of the supporting spring 9 is fixedly connected with the combined sleeve ring 4, and the other end of the supporting spring 9 is fixedly connected with the limiting connection ring. The supporting spring 9 provides additional buffering and support when the sealing ring is subjected to pressure or vibration, thereby maintaining the stability and sealing performance of the sealing ring. In addition, the supporting spring 9 can also compensate for the slight displacement caused by temperature changes or material aging. One end of the positioning connection rod 5 is fixedly welded with the combined sleeve ring 4, and the other end of the positioning connection rod 5 is designed with a limiting stop disc, which prevents the supporting spring 9 from falling off the positioning connection rod 5 when subjected to excessive pressure. The design of the limiting stop disc increases the safety and reliability of the sealing ring. The outer surface of the sealing gasket 7 is fixedly bonded with the sealing sleeve 6, which can prevent separation or movement between the two in a high-temperature environment, thereby maintaining the integrity and sealing performance of the sealing ring. The engine exhaust pipe sealing ring with the multi-layer composite structure realizes a more complex and delicate connection and support structure by adopting the limiting connection ring and the positioning connection hole, the supporting spring 9, the fixed welding of the positioning connection rod 5 and the combined sleeve ring 4, the limiting stop disc, and the fixed bonding of the sealing gasket 7 and the sealing sleeve 6. This design not only improves the installation convenience and connection strength of the sealing ring, but also enhances its stability and durability in harsh environments such as high temperature, high pressure and vibration. In addition, the design of the supporting spring 9 and the limiting stop disc provides additional buffering and safety protection, further improving the reliability and performance of the sealing ring.

[0026] The basic principles and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples. The above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application. These changes and improvements fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An engine exhaust pipe seal ring having a multi-layer composite structure, comprising a shaped support ring (1), characterized in that: The outer side of the plastic shaping support ring (1) is sleeved with an elastic gasket (2), the outer side of the elastic gasket (2) is provided with a heat-resistant sleeve pad (3), the outer side of the plastic shaping support ring (1) is clamped with a combined sleeve ring (4), the periphery of the combined sleeve ring (4) is fixedly provided with a positioning connecting rod (5), the outer side of the positioning connecting rod (5) is sleeved with a sealing sleeve (6), and the inner side of the sealing sleeve (6) is provided with a sealing gasket (7).

2. The engine exhaust pipe seal ring having a multi-layered composite structure according to claim 1, characterized in that: The elastic gasket (2) is made of high-temperature-resistant rubber material, and a positioning installation groove is formed at the center position of the elastic gasket (2), and the plastic shaping support ring (1) is embeddedly installed in the inside of the positioning installation groove.

3. The engine exhaust pipe seal ring having a multi-layer composite structure according to claim 2, characterized in that: The outer side of the elastic gasket (2) is uniformly designed with an elastic air bag, the heat-resistant sleeve pad (3) and the elastic gasket (2) are fixedly pasted with each other, and the outer surface of the elastic gasket (2) and the inner surface of the sealing gasket (7) are mutually pasted.

4. The engine exhaust pipe seal ring having a multi-layered composite structure of claim 1, wherein: The outer side of the plastic shaping support ring (1) is uniformly provided with a positioning clamping groove, the inner side of the combined sleeve ring (4) is uniformly designed with a positioning clamping block, and the positioning clamping block and the positioning clamping groove are mutually slidably clamped.

5. The engine exhaust pipe seal ring having a multi-layer composite structure according to claim 4, characterized in that: The outer side of the positioning clamping block is provided with a connecting receiving groove, the inside of the connecting receiving groove is provided with a connecting threaded hole, the inside of the positioning clamping groove is designed with a fixed threaded groove, and the inside of the connecting threaded hole is threadedly installed with a fixed bolt (8), and the fixed bolt (8) and the fixed threaded groove are mutually threadedly connected.

6. The engine exhaust pipe seal ring having a multi-layer composite structure according to claim 1, characterized in that: The lower end of the sealing sleeve (6) is designed with a limiting connecting ring, the periphery of the limiting connecting ring is uniformly provided with a positioning connecting hole, and the positioning connecting hole and the positioning connecting rod (5) are mutually slidably clamped.

7. The engine exhaust pipe seal ring having a multi-layer composite structure according to claim 6, characterized in that: The outer side of the positioning connecting rod (5) is sleeved with a supporting spring (9), one end of the supporting spring (9) and the combined sleeve ring (4) are mutually fixedly connected, and the other end of the supporting spring (9) and the limiting connecting ring are mutually fixedly connected.

8. The engine exhaust pipe seal ring having a multi-layer composite structure of claim 1, wherein: One end of the positioning connecting rod (5) and the combined sleeve ring (4) are mutually fixedly welded, the other end of the positioning connecting rod (5) is designed with a limiting baffle disc, and the outer surface of the sealing gasket (7) and the sealing sleeve (6) are mutually fixedly pasted.

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