EGR cooler sealing gasket
By introducing a claw structure and a tear-resistant, reinforced, and corrosion-resistant layer into the EGR cooler gasket, the problem of difficult gasket removal was solved, achieving both rapid disassembly and stable long-term sealing performance.
Patent Information
- Application Number
- CN202423237893.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2034-12-27
AI Technical Summary
The bolts of existing EGR cooler gaskets rust or corrode after long-term use, making disassembly difficult and affecting the efficiency of equipment maintenance and replacement.
The sealing gasket body is designed with a flip-claw structure, combined with tear-resistant, reinforced and corrosion-resistant layers to enhance the gasket's toughness, strength and corrosion resistance, and the flip-claw structure enables quick disassembly.
It simplifies the gasket removal process, improves maintenance efficiency, and ensures that the sealing performance is not affected during long-term use.
Smart Images
Figure CN223841025U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sealing gasket technology, and in particular to EGR cooler sealing gaskets. Background Technology
[0002] An EGR cooler is generally a heat exchanger with many internal channels through which hot exhaust gases flow, while coolant circulates externally. Through heat exchange, the heat from the exhaust gases is carried away by the coolant, significantly reducing their temperature. During the installation of an EGR cooler, gaskets are used to seal the connections between the cooler and other components (such as the intake manifold and exhaust pipe). Because the gases inside the engine flow under pressure during operation, especially in an exhaust gas recirculation system where pressure fluctuations are significant, gaskets effectively prevent exhaust gas leakage, ensuring that the exhaust gases flow within the system along the intended path.
[0003] EGR cooler gaskets utilize the elasticity and sealing properties of rubber to form a sealed connection between the EGR cooler and other components, preventing exhaust gas leakage. The edges of the gaskets are often designed with special shapes, such as lips or flanges, to enhance the sealing effect.
[0004] In existing EGR cooler gaskets, installation requires first positioning the gasket correctly, aligning the mounting holes on the cooler and connecting components, then inserting bolts, and finally tightening with nuts. Tools such as wrenches are typically needed to ensure the nuts reach the appropriate torque for a tight seal. However, in practice, bolt-fixed gaskets are prone to bolt rusting or corrosion over time, leading to difficult disassembly and requiring more time and effort to remove the gasket. This is detrimental to timely equipment maintenance and component replacement. Therefore, to address these issues, we propose a new EGR cooler gasket. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides an EGR cooler gasket, which aims to improve the problem that some gaskets in the prior art cannot be quickly installed by flip-claw.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] EGR cooler gasket includes a gasket body, gaskets are fixedly connected to the front and rear sides of the gasket body, mounting holes are provided on the left and right sides of the gasket body, welding points are provided on the left and right sides of the gasket body, flip claws are fixedly connected to the four corners of the gasket body, mounting holes are provided on the outside of the gasket body, and tear-resistant components are provided inside the gasket body to improve the strength of the gasket body.
[0008] As a further description of the above technical solution:
[0009] The tear-resistant component includes a tear-resistant layer, the outer surface of which is disposed inside the sealing gasket body;
[0010] As a further description of the above technical solution:
[0011] A reinforcing layer is fixedly connected to the top of the tear-resistant layer, and the outside of the reinforcing layer is disposed inside the sealing gasket body;
[0012] As a further description of the above technical solution:
[0013] The bottom of the reinforcement layer is fixedly connected to an anti-corrosion layer, and the exterior of the anti-corrosion layer is disposed inside the sealing gasket body.
[0014] This utility model has the following beneficial effects:
[0015] 1. In this utility model, when maintenance, repair, or replacement of the rubber gaskets on the EGR cooler is required, the disassembly of the flip-claw structure is relatively simple. Simply use appropriate tools or follow specific operating methods to loosen or push the flip-claws from the mounting location to easily remove the rubber gaskets. Compared to some difficult-to-disassemble mounting methods, the flip-claw structure greatly reduces the difficulty and workload of disassembly, improving maintenance efficiency.
[0016] 2. In this invention, the tear-resistant layer enhances the toughness and strength of the rubber pad, enabling it to withstand a certain degree of pulling, squeezing, and other external forces during installation without easily tearing or being damaged. The rubber pad needs to withstand the weight of the cooler itself and the pressure of the internal gas. The reinforcing layer helps the rubber pad maintain its shape and structural stability, ensuring that the sealing effect is not affected. The anti-corrosion layer protects the rubber pad's performance from corrosion, allowing it to maintain good sealing performance and elasticity throughout long-term use. Attached Figure Description
[0017] Figure 1 This is a three-dimensional schematic diagram of the EGR cooler sealing gasket proposed in this utility model;
[0018] Figure 2 This is a schematic diagram of the mounting hole 2 of the EGR cooler gasket proposed in this utility model;
[0019] Figure 3 This is a schematic diagram of the reinforcing layer of the EGR cooler gasket proposed in this utility model.
[0020] Legend:
[0021] 1. Sealing gasket body; 2. Gasket; 3. Mounting hole one; 4. Weld joint; 5. Flip claw; 6. Mounting hole two; 7. Reinforcing layer; 8. Tear-resistant layer; 9. Corrosion-resistant layer. 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] Reference Figures 1 to 3 The EGR cooler gasket includes a gasket body 1. Gaskets 2 are fixedly connected to both the front and rear sides of the gasket body 1. Gaskets 2 enhance the sealing performance between the gasket and the cooler, preventing gas leakage. Mounting holes 3 are provided on both the left and right sides of the gasket body 1. These mounting holes 3 are used to fix the gasket in the corresponding position on the cooler, ensuring that the gasket will not move or fall off during operation. The design of the mounting holes 3 takes into account the structural characteristics of the cooler to ensure that the gasket can be firmly installed on the cooler. Welding points 4 are provided on both the left and right sides of the gasket body 1. The welding points 4 are formed through a special welding process, and the welding material is compatible with the gasket body material, ensuring a strong weld and not negatively affecting the sealing performance of the gasket. The size, shape, and distribution of the welding points 4 are carefully designed to meet the stress requirements of the gasket during use.
[0024] The four corners of the sealing gasket body 1 are fixedly connected with flip claws 5. The flip claws 5 are generally curved claw-shaped structures, and their bending angle and length are determined according to the installation and usage environment of the sealing gasket. The flip claws 5 are connected to the sealing gasket body 1 at the four corners of the sealing gasket through an integrally formed connection. During installation, the flip claws 5 can play a role in positioning and auxiliary fixing. They can be embedded into the corresponding mounting groove or engage with other mating parts to ensure the accuracy and stability of the sealing gasket in the installation position. At the same time, they also help to enhance the sealing gasket's resistance to displacement during use. The sealing gasket body 1 has mounting holes 6 on its exterior. The edges of the mounting holes 6 are smoothed to avoid damage to the connecting parts during installation. These mounting holes facilitate the installation of the sealing gasket. By passing bolts, pins, or other connecting parts through the mounting holes, the sealing gasket can be accurately fixed to the equipment or structure that needs to be sealed. The sealing gasket body 1 is equipped with tear-resistant components to improve the strength of the sealing gasket body 1. The tear-resistant components are crucial for extending the service life of the sealing gasket and ensuring its normal operation under complex stress conditions.
[0025] Reference Figure 3 The tear-resistant component includes a tear-resistant layer 8, which is typically made of high-strength fiber materials or polymer materials with special toughness. These materials have excellent tensile and tear resistance, capable of withstanding large external forces without breaking. The tear-resistant layer 8 is uniformly and continuously distributed within the gasket body 1, forming a multi-layered structure depending on the stress level the gasket needs to withstand. During manufacturing, the tear-resistant layer 8 is tightly bonded to the gasket body material through an embedding process, forming a whole that jointly bears external forces, effectively preventing the gasket from tearing due to tensile, torsional, or other forces during use. The tear-resistant layer 8 is externally located inside the gasket body 1, and a reinforcing layer 7 is fixedly connected to the top of the tear-resistant layer 8. The reinforcing layer 7 is composed of materials with high strength and rigidity, such as high-strength rubber composites or polymers with added reinforcing fibers.
[0026] The reinforcing layer 7 provides additional structural support to the gasket, enhancing its overall compressive strength and shape retention. The thickness and density of the reinforcing layer 7 are adjusted according to the gasket's application requirements. The reinforcing layer 7 is externally located inside the gasket body 1. An anti-corrosion layer 9, composed of corrosion-resistant rubber additives, is fixedly connected to the bottom of the reinforcing layer 7. In harsh working environments, the gasket may come into contact with various corrosive media, such as chemical liquids and humid gases. The presence of the anti-corrosion layer 9 effectively prevents these corrosive substances from eroding the gasket body, protecting the internal structure of the gasket from damage. The anti-corrosion layer 9 is externally located inside the gasket body 1.
[0027] Working principle: First, before installing the gasket, the operator must ensure that the surface of the cooler is clean and free of debris to ensure sealing performance. Next, the gasket body 1 is placed in the corresponding position on the cooler, with the external mounting holes 3 and 6 aligned with the cooler's mounting holes. Then, the operator uses bolts or pins to firmly fix the gasket to the cooler through the mounting holes, ensuring that it will not move or fall off during operation.
[0028] During the fixing process, the presence of gasket 2 enhances the sealing performance between the gasket and the cooler, preventing gas leakage. The design of weld point 4 ensures a firm connection between the gasket body and the cooler, preventing loosening due to external forces. The positioning function of the flip claws 5 at the four corners of the gasket further ensures the installation accuracy and stability of the gasket, allowing it to be effectively embedded into the corresponding mounting groove.
[0029] Once the gasket is installed, the tear-resistant components inside the gasket body 1 begin to function. The tear-resistant layer 8 provides excellent tensile and tear resistance, ensuring the gasket can withstand external forces without breaking during use. Simultaneously, the reinforcing layer 7 provides additional structural support to the gasket, enhancing its compressive strength and maintaining shape stability. The corrosion-resistant layer 9 protects the gasket from corrosive media, ensuring its long-term use in harsh environments.
[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An EGR cooler gasket, comprising a gasket body (1), characterized in that: Gaskets (2) are fixedly connected to the front and rear sides of the outer side of the sealing gasket body (1). Mounting holes (3) are opened on the left and right sides of the outer side of the sealing gasket body (1). Welding points (4) are provided on the left and right sides of the outer side of the sealing gasket body (1). Flip claws (5) are fixedly connected to the four corners of the outer side of the sealing gasket body (1). Mounting holes (6) are opened on the outer side of the sealing gasket body (1). Tear-resistant components for improving the strength of the sealing gasket body (1) are provided inside the sealing gasket body (1).
2. The EGR cooler sealing gasket according to claim 1, characterized in that: The tear-resistant component includes a tear-resistant layer (8), the exterior of which is disposed inside the sealing gasket body (1).
3. The EGR cooler sealing gasket according to claim 2, characterized in that: The top of the tear-resistant layer (8) is fixedly connected to a reinforcing layer (7), and the outside of the reinforcing layer (7) is disposed inside the sealing gasket body (1).
4. The EGR cooler sealing gasket according to claim 3, characterized in that: The bottom of the reinforcing layer (7) is fixedly connected to an anti-corrosion layer (9), and the exterior of the anti-corrosion layer (9) is disposed inside the sealing gasket body (1).