Engine exhaust pipe heat shield

Abstract

This utility model discloses a heat insulation device for engine exhaust pipes, comprising: a flexible aluminum foil plate, a waterproof plate fixedly connected to the outer side of the flexible aluminum foil plate, a stainless steel mesh plate fixedly connected to the outer side of the waterproof plate, a plurality of ring-shaped fixing discs fixedly connected to the outer side of the stainless steel mesh plate, a plurality of evenly distributed fixing blocks fixedly connected to the lower end of the stainless steel mesh plate, and elastic tubes fixedly connected to the side walls of the plurality of fixing blocks. This utility model, by incorporating components such as the flexible aluminum foil plate and the anti-wear frame, consists of a multi-layered structure including the flexible aluminum foil plate, the waterproof plate, and the stainless steel mesh plate. The multi-layered structure works together to enhance the overall heat insulation effect. The hooks can be secured inside the fixing disc slots at different positions. This design facilitates the wrapping of exhaust pipes of different diameters, improving the versatility and adaptability of the device, and meeting the usage requirements of various engine models.

Description

Technical Field

[0001] This utility model relates to the technical field of exhaust pipe heat insulation devices, specifically an engine exhaust pipe heat insulation device. Background Technology

[0002] The surface shape of engine exhaust pipes is complex and varied, making it difficult for traditional heat insulation devices to fit tightly against them. This results in numerous heat transfer gaps between the exhaust pipe and the heat insulation device, allowing heat to easily diffuse into the surrounding environment and reducing the insulation effect. Moreover, traditional heat insulation devices are relatively rigid and lack sufficient flexibility and resistance to deformation when faced with engine vibration or stress changes during installation. They are prone to damage due to stress concentration, further affecting the heat insulation performance.

[0003] The prior art provides an engine exhaust pipe heat insulation device (publication number: CN221942546U), which includes a heat insulation component and a disassembly component. The heat insulation component includes a metal sleeve, a heat insulation plate, a muffler, an exhaust pipe, and a support frame. The heat insulation plate is fixed to the inner cavity of the metal sleeve, the muffler is disposed in the inner cavity of the heat insulation plate, the exhaust pipe is fixed to the inner cavity of the muffler, and the support frame is fixed to both sides of the surface of the metal sleeve. The disassembly component is disposed on the top of the support frame and includes a disassembly box, a rotating wheel, a two-way threaded rod, a sliding sleeve, and a fastener. The disassembly box is disposed on the top of the support frame. The above-mentioned heat insulation device insulates the exhaust pipe by using a metal sleeve with a fixed shape. That is, the shape of the heat insulation sleeve is fixed, which is not convenient for heat insulation treatment of exhaust pipes with different shapes. Therefore, we need to propose an engine exhaust pipe heat insulation device. Utility Model Content

[0004] The purpose of this utility model is to provide an engine exhaust pipe heat insulation device, which, by setting up components such as flexible aluminum foil and anti-wear frame, facilitates heat insulation treatment of exhaust pipes of different diameters, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An engine exhaust pipe heat insulation device, comprising:

[0007] A flexible aluminum foil sheet, wherein a waterproof plate is fixedly connected to the outer side of the flexible aluminum foil sheet, a stainless steel mesh plate is fixedly connected to the outer side of the waterproof plate, a plurality of fixed discs arranged in a ring are fixedly connected to the outer side of the stainless steel mesh plate, a plurality of evenly distributed fixed blocks are fixedly connected to the lower end of the stainless steel mesh plate, an elastic tube is fixedly connected to the side wall of each of the plurality of fixed blocks, a fixed ring is fixedly connected to the end of the elastic tube, a connecting plate is contacted on the side wall of the fixed ring, and a hook is fixedly connected to the end of the connecting plate.

[0008] Preferably, the fixed plate has a slot inside, which is adapted to the hook.

[0009] Preferably, a movable disk is slidably connected inside the elastic tube.

[0010] Preferably, a tension spring is provided between the movable disk and the fixed block.

[0011] Preferably, an elastic rod is fixedly connected to the side wall of the movable disk, and the elastic rod is slidably connected to the fixed ring.

[0012] Preferably, a sealing ring is fixedly connected to the side wall of the fixed ring, and the sealing ring is slidably connected to the elastic rod.

[0013] Preferably, the flexible aluminum foil plate is internally fixed with an anti-wear frame.

[0014] Preferably, the outer side of the stainless steel mesh plate is slidably connected with two symmetrically distributed hose clamps.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model incorporates components such as flexible aluminum foil and anti-wear frame. The device consists of a multi-layered structure including flexible aluminum foil, waterproof board, and stainless steel mesh. The multi-layered structure works together to enhance the overall heat insulation effect. The hooks can be locked inside the slots of the fixing disc at different positions. This design facilitates the wrapping of exhaust pipes of different diameters, improving the device's versatility and adaptability, and meeting the usage requirements of various engine models. Attached Figure Description

[0017] Figure 1 This is one of the structural schematic diagrams of this utility model;

[0018] Figure 2 This is the second structural schematic diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of a partial component of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the fixing plate of this utility model.

[0021] In the diagram: 1. Flexible aluminum foil sheet; 2. Anti-wear frame; 3. Waterproof sheet; 4. Stainless steel mesh sheet; 5. Hose clamp; 6. Fixing plate; 61. Slot; 7. Fixing block; 8. Elastic tube; 9. Tension spring; 10. Moving plate; 11. Elastic rod; 12. Fixing ring; 13. Sealing ring; 14. Connecting plate; 15. Hook. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a technical solution:

[0024] An engine exhaust pipe heat insulation device, comprising:

[0025] A flexible aluminum foil sheet 1 is fixedly connected to a waterproof sheet 3 on its outer side. A stainless steel mesh sheet 4 is fixedly connected to the outer side of the waterproof sheet 3. Multiple fixed discs 6 are fixedly connected to the outer side of the stainless steel mesh sheet 4 in a ring. Multiple fixed blocks 7 are fixedly connected to the lower end of the stainless steel mesh sheet 4. Elastic tubes 8 are fixedly connected to the side walls of the multiple fixed blocks 7. A fixed ring 12 is fixedly connected to the end of the elastic tube 8. A connecting plate 14 contacts the side wall of the fixed ring 12. A hook 15 is fixedly connected to the end of the connecting plate 14.

[0026] Through the combination of flexible aluminum foil plate 1, waterproof plate 3, and other structures, comprehensive and reliable heat insulation protection for the engine exhaust pipe is achieved, effectively preventing the high temperature generated by the exhaust pipe from spreading to the surrounding environment. This solves the technical problem of heat damage to surrounding components caused by the high temperature of the engine exhaust pipe and affecting the overall performance of the engine. As the core heat insulation component of the entire heat insulation device, the flexible aluminum foil plate 1, with its good flexibility, can closely fit the complex surface shape of the engine exhaust pipe, effectively reducing gaps in heat transfer. The waterproof plate 3 is fixedly connected to the outside of the flexible aluminum foil plate 1. The waterproof plate 3 is made of a material with excellent waterproof performance and is tightly combined with the flexible aluminum foil plate 1 through a reliable connection process, which can effectively prevent external moisture from entering and avoid the performance degradation of the flexible aluminum foil plate 1 due to moisture penetration, thereby ensuring the durability of the heat insulation effect. The stainless steel mesh plate 4 not only has high strength and can provide a stable structural support for the entire device, but its mesh structure is also conducive to air circulation and assists in heat dissipation to a certain extent. The fixing plate 6 is evenly distributed around the stainless steel mesh plate 4, providing a stable point of support for the installation of the device. The lower end of the stainless steel mesh plate 4 is fixedly connected to multiple evenly distributed fixing blocks 7. The fixing blocks 7 serve to connect and support other components. The elastic tube 8 has good elastic deformation capability and can adapt to stress changes in different installation environments. The fixing ring 12 provides a stable connection base for subsequent connecting components. A connecting plate 14 contacts the side wall of the fixing ring 12. The connecting plate 14 serves to transmit force. A hook 15 is fixedly connected to the end of the connecting plate 14. The hook 15 is used to hang with other structures to achieve the installation and fixation of the device.

[0027] The fixed plate 6 has a slot 61 inside, which is adapted to the hook 15.

[0028] By using the matching structure between the internal slot 61 of the fixed plate 6 and the hook 15, the engine exhaust pipe heat insulation device can be installed quickly and stably without complicated installation tools and cumbersome operation steps, which greatly improves the installation efficiency and solves the technical problems of difficult and time-consuming installation of traditional heat insulation devices. The shape and size of the slot 61 are precisely designed to match the hook 15. The opening size and depth of the slot 61 can ensure that the hook 15 can be smoothly inserted and not easily dislodged. When installing the device, simply hang the hook 15 accurately into the slot 61 to achieve a quick connection between the device and the installation part.

[0029] The flexible tube 8 has a sliding connection to a movable disk 10.

[0030] Through the structural cooperation between the elastic tube 8 and the internally slidably connected movable disk 10, the elastic tube 8 can better adapt to stress changes in different directions, enhancing the flexibility and deformation resistance of the device, achieving effective heat insulation protection for the engine exhaust pipe under complex working conditions, and solving the technical problem of reduced heat insulation effect due to insufficient device rigidity or stress concentration. The movable disk 10 is slidably connected inside the elastic tube 8. The movable disk 10 can slide freely along the tube wall inside the elastic tube 8. Its sliding range is limited by the internal space of the elastic tube 8. When the device is subjected to external forces, such as engine vibration or stress during installation, the movable disk 10 will undergo corresponding displacement within the elastic tube 8.

[0031] A tension spring 9 is provided between the movable disk 10 and the fixed block 7.

[0032] Through the structural cooperation of the movable disc 10, the fixed block 7, and the tension spring 9, the elastic tube 8 can quickly return to its original shape after being subjected to external force, maintaining the elasticity and stability of the device. This ensures that the heat insulation device is always tightly attached to the engine exhaust pipe, achieving a long-term and stable heat insulation effect. It solves the technical problem that the elastic tube 8 is easily deformed and difficult to recover under external force, leading to a decrease in heat insulation performance. The tension spring 9 is a part with elastic restoring force. One end of it is fixed to the movable disc 10, and the other end is fixed to the fixed block 7. When the movable disc 10 slides inside the elastic tube 8, the tension spring 9 will stretch or compress according to the displacement of the movable disc 10. When the external force disappears, the elastic restoring force of the tension spring 9 will make the movable disc 10 quickly return to its initial position.

[0033] An elastic rod 11 is fixedly connected to the side wall of the movable disk 10, and the elastic rod 11 is slidably connected to the fixed ring 12.

[0034] The structural cooperation of the movable disk 10, elastic rod 11, and fixed ring 12 further enhances the buffering and shock absorption capabilities of the device, effectively reducing the impact of engine vibration on the heat insulation device. It achieves reliable heat insulation protection for the engine exhaust pipe under vibration environment, and solves the technical problem of the heat insulation device becoming loose and the heat insulation effect deteriorating due to vibration. The elastic rod 11 is made of a material with good elasticity and has a certain bending and stretching ability. The elastic rod 11 is slidably connected to the fixed ring 12, and the elastic rod 11 can slide freely in the hole of the fixed ring 12. When the device is subjected to vibration or impact, the elastic rod 11 will slide in the fixed ring 12 with the movement of the movable disk 10 and absorb part of the energy through its own elastic deformation.

[0035] A sealing ring 13 is fixedly connected to the side wall of the fixed ring 12, and the sealing ring 13 is slidably connected to the elastic rod 11.

[0036] The structural cooperation of the fixed ring 12, sealing ring 13, and elastic rod 11 achieves sealing protection of the inside of the device, improves the reliability and service life of the device, ensures that the heat insulation device can maintain good heat insulation performance in harsh environments, and solves the technical problem of damage to internal parts and reduced heat insulation effect caused by the intrusion of external impurities. The sealing ring 13 is made of rubber or silicone with good sealing performance. The sealing ring 13 is slidably connected to the elastic rod 11. During the sliding process of the elastic rod 11 in the fixed ring 12, the sealing ring 13 can closely fit the surface of the elastic rod 11 to form an effective sealing barrier. It can prevent external dust, moisture and other impurities from entering the interior of the elastic tube 8 and protect the internal parts from corrosion.

[0037] The flexible aluminum foil sheet 1 is internally fixed with a wear-resistant frame 2.

[0038] The structural cooperation between the flexible aluminum foil plate 1 and the anti-wear frame 2 effectively extends the service life of the flexible aluminum foil plate 1, ensures the stable heat insulation performance of the heat insulation device, and solves the technical problem of reduced heat insulation effect due to wear of the flexible aluminum foil plate 1. The anti-wear frame 2 is usually made of high-strength, wear-resistant materials, such as hard plastic or metal. It is tightly attached to the inner side of the flexible aluminum foil plate 1, providing additional protection for the flexible aluminum foil plate 1. During engine operation, the exhaust pipe may vibrate and rub against the flexible aluminum foil plate 1. The anti-wear frame 2 can withstand this friction and reduce wear on the flexible aluminum foil plate 1.

[0039] Two symmetrically distributed hose clamps 5 are slidably connected to the outer side of the stainless steel mesh plate 4.

[0040] The structural cooperation between the stainless steel mesh plate 4 and the two symmetrically distributed hose clamps 5 achieves a reliable connection between the heat insulation device and the engine exhaust pipe, ensuring that the device will not loosen or fall off during engine operation. This improves the installation stability and heat insulation effect of the device and solves the technical problems of the heat insulation device being insecurely installed and easily falling off. The hose clamp 5 is a commonly used fastener with the characteristics of convenient adjustment and strong tightening force. The two hose clamps 5 are symmetrically distributed on the outside of the stainless steel mesh plate 4. By rotating the adjusting bolt on the hose clamp 5, the tightness of the hose clamp 5 can be adjusted. When installing the heat insulation device, the hose clamp 5 is put on the engine exhaust pipe, and then the adjusting bolt is tightened to make the hose clamp 5 tightly clamp the exhaust pipe, thereby firmly fixing the entire heat insulation device to the exhaust pipe.

[0041] Working principle: The flexible aluminum foil 1 is aligned with the engine exhaust pipe. Due to its good flexibility, it fits tightly to the complex surface shape of the exhaust pipe, minimizing the gaps for heat transfer. The anti-wear frame 2 fits tightly to the inside of the flexible aluminum foil 1. During the fitting process, it can effectively withstand the friction that may be generated by the exhaust pipe and protect the flexible aluminum foil 1. The waterproof plate 3 can block the intrusion of external moisture and ensure the long-lasting heat insulation effect. The stainless steel mesh plate 4 protects the device and prevents external collisions from damaging the device.

[0042] By rotating the adjusting bolt on the hose clamp 5, gradually adjust the tightness of the hose clamp 5 so that it tightly grips the exhaust pipe, firmly fixing the entire heat insulation device to the exhaust pipe. Accurately align the hook 15 on the side wall of the connecting plate 14 with the slot 61 inside the fixing plate 6, and gently apply pressure to allow the hook 15 to smoothly engage in the slot 61. By engaging in different positions within the slot 61, the device can easily wrap around exhaust pipes of different diameters. When the device is subjected to external forces such as engine vibration or installation stress, the moving plate 10 will slide freely along the wall of the elastic tube 8, with its sliding range limited by the internal space of the elastic tube 8. As the moving plate 10 slides, the tension spring 9 will stretch or compress according to the displacement. When the external force disappears, the elastic restoring force of the tension spring 9 causes the moving plate 10 to quickly return to its initial position, ensuring that the elastic tube 8 quickly returns to its original shape, maintaining the elasticity and stability of the device, and ensuring that the heat insulation device always fits tightly against the engine exhaust pipe.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat insulation device for an engine exhaust pipe, characterized in that, include: A flexible aluminum foil board (1) is fixedly connected to a waterproof board (3) on its outer side. A stainless steel mesh board (4) is fixedly connected to the outer side of the waterproof board (3). A plurality of fixed discs (6) arranged in a ring are fixedly connected to the outer side of the stainless steel mesh board (4). A plurality of fixed blocks (7) are evenly distributed at the lower end of the stainless steel mesh board (4). An elastic tube (8) is fixedly connected to the side wall of each of the plurality of fixed blocks (7). A fixed ring (12) is fixedly connected to the end of the elastic tube (8). A connecting plate (14) contacts the side wall of the fixed ring (12). A hook (15) is fixedly connected to the end of the connecting plate (14).

2. The engine exhaust pipe heat insulation device according to claim 1, characterized in that, The fixed plate (6) has a slot (61) inside, which is adapted to the hook (15).

3. The engine exhaust pipe heat insulation device according to claim 1, characterized in that, The elastic tube (8) has a sliding connection to a movable disk (10).

4. The engine exhaust pipe heat insulation device according to claim 3, characterized in that, A tension spring (9) is provided between the movable disk (10) and the fixed block (7).

5. The engine exhaust pipe heat insulation device according to claim 4, characterized in that, An elastic rod (11) is fixedly connected to the side wall of the movable disk (10), and the elastic rod (11) is slidably connected to the fixed ring (12).

6. The engine exhaust pipe heat insulation device according to claim 5, characterized in that, A sealing ring (13) is fixedly connected to the side wall of the fixed ring (12), and the sealing ring (13) is slidably connected to the elastic rod (11).

7. The engine exhaust pipe heat insulation device according to claim 1, characterized in that, The flexible aluminum foil plate (1) is internally fixedly connected with a wear-resistant frame (2).

8. The engine exhaust pipe heat insulation device according to claim 1, characterized in that, The stainless steel mesh plate (4) has two symmetrically distributed hose clamps (5) slidingly connected to its outer side.

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