Rubber part for automobile exhaust purification equipment

Abstract

The utility model provides a rubber part for automobile exhaust purification equipment, which relates to the technical field of rubber parts, and comprises a rubber main body internally provided with a hole along the axis direction, the outer wall of the rubber main body is provided with a sealing ring playing a sealing role, the bottom of the rubber main body is connected with a base, and the base is provided with a sealing ring. A damping cavity providing a damping shrinkage space is formed in the rubber body, the two sets of sealing rings are arranged, the two sets of sealing rings are distributed at equal intervals relative to the outer wall of the rubber body, and the rubber body is formed by compounding hydrogenated butadiene-acrylonitrile rubber and carbon nanofibers. The mechanical strength, the thermal stability and the fatigue resistance of the rubber are greatly improved, meanwhile, the outer surface of the rubber body is coated with the protective coating formed by compounding polyether-ether-ketone and silicon carbide nanoparticles, corrosive components in tail gas can be effectively prevented from corroding a rubber matrix, and meanwhile abrasion of particles in the tail gas to the surface of a rubber part is reduced.

Description

Technical Field

[0001] This utility model relates to the field of rubber parts technology, and in particular to a rubber part for automotive exhaust purification equipment. Background Technology

[0002] Rubber parts for automotive exhaust purification equipment are key components used in automotive exhaust treatment systems, such as catalytic converters, particulate filters, and mufflers. They are mainly used to achieve sealing, vibration reduction, high-temperature resistant connections, and chemical corrosion protection between components.

[0003] However, in the existing technology, when rubber parts are used in automotive exhaust purification equipment, the rubber parts themselves have poor shock absorption effect and will be damaged when subjected to pressure, resulting in poor sealing performance. They need to be frequently disassembled, replaced and repaired. Therefore, there is a need for a rubber part for automotive exhaust purification equipment. Utility Model Content

[0004] The purpose of this utility model is to provide a rubber component for automotive exhaust purification equipment, which solves the problem in the prior art where the poor shock absorption effect of the rubber component leads to damage and thus affects the sealing performance.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rubber part for automotive exhaust purification equipment, comprising a rubber body with holes opened along the axial direction inside, a sealing ring provided on the outer wall of the rubber body for sealing, a base connected to the bottom of the rubber body, and a shock-absorbing cavity provided inside the rubber body for providing shock-absorbing and shrinkage space.

[0006] Preferably, two sets of sealing rings are provided, and the two sets of sealing rings are equidistantly distributed about the outer wall of the rubber body.

[0007] Preferably, the sealing ring has a circular cross-section.

[0008] Preferably, the damping cavity surrounds the inner peripheral wall of the rubber body, and three sets of damping cavities are provided, which are equidistantly distributed on the inner wall of the rubber body.

[0009] Preferably, the rubber body is composed of hydrogenated nitrile rubber and carbon nanofibers.

[0010] Preferably, the outer surface of the rubber body is coated with a protective coating composed of polyether ether ketone and silicon carbide nanoparticles.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The rubber body is made of hydrogenated nitrile rubber and carbon nanofiber composite, which greatly improves the mechanical strength, thermal stability and fatigue resistance of the rubber. At the same time, a protective coating made of polyether ether ketone and silicon carbide nanoparticles is coated on the outer surface of the rubber body, which can effectively prevent corrosive components in the exhaust gas from eroding the rubber matrix and reduce the wear of the rubber parts surface by particulate matter in the exhaust gas. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the product of this utility model;

[0014] Figure 2 This is a schematic diagram of the overall front view of the product of this utility model;

[0015] Figure 3 This is a schematic diagram of the overall cross-sectional structure of the product of this utility model.

[0016] In the diagram: 1. Rubber body; 2. Sealing ring; 3. Base; 4. Shock-absorbing cavity. Detailed Implementation

[0017] 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.

[0018] This utility model relates to a rubber component for automotive exhaust purification equipment, such as... Figure 1-3 As shown, the device includes a rubber body 1 with holes opened along the axial direction inside. The outer wall of the rubber body 1 is provided with a sealing ring 2 to increase the sealing of the connection between the rubber part and the equipment. The bottom of the rubber body 1 is connected to a base 3 to lock the position of the whole and prevent it from loosening after being locked. The rubber body 1 is also provided with a shock-absorbing cavity 4 inside, which provides a space for the rubber part to shrink after being compressed, and plays a role in shock absorption to avoid the rubber part being damaged due to excessive force.

[0019] Among them, such as Figure 1 As shown, there are two sets of sealing rings 2. The two sets of sealing rings 2 are equidistant from the outer wall of the rubber body 1, which helps to improve the sealing performance of the connection. A single setting is prone to leakage and poor sealing. The cross-section of the sealing ring 2 is circular. The inner wall of the sealing ring 2 is connected to the rubber body 1 and is compatible with the external mating groove to achieve the purpose of sealing.

[0020] Among them, such as Figure 3As shown, the shock-absorbing cavity 4 surrounds the inner peripheral wall of the rubber body 1, which can uniformly provide space for the rubber parts to contract. There are three sets of shock-absorbing cavities 4, which are equidistantly distributed on the inner wall of the rubber body 1. This effectively absorbs and buffers the energy of shock absorption, reduces the damage to the exhaust gas purification equipment caused by vibration, and improves stability and service life.

[0021] Furthermore, in order to increase the strength and stability of the rubber parts, the rubber body 1 is made of hydrogenated nitrile rubber and carbon nanofibers. The hydrogenated nitrile rubber itself has good high temperature resistance, oil resistance and chemical corrosion resistance. The carbon nanofibers are uniformly dispersed in it to form a reinforced network structure, which greatly improves the mechanical strength, thermal stability and fatigue resistance of the rubber.

[0022] Furthermore, to enhance the hardness and wear resistance of the rubber parts, the outer surface of the rubber body 1 is coated with a protective coating composed of polyetheretherketone (PEEK) and silicon carbide nanoparticles. PEEK possesses excellent high-temperature resistance, wear resistance, and chemical stability, effectively resisting the erosion of high-temperature exhaust gases. The silicon carbide nanoparticles are uniformly dispersed in the PEEK coating, significantly enhancing the coating's hardness and wear resistance. The coating thickness is controlled at 0.15-0.25 mm, ensuring good protective effects without affecting the flexibility and installation accuracy of the rubber parts. This coating effectively blocks corrosive components in the exhaust gases from eroding the rubber matrix, while simultaneously reducing wear on the rubber parts' surface caused by particulate matter in the exhaust gases.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] 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 rubber component for automotive exhaust purification equipment, characterized in that: It includes a rubber body (1) with holes opened along the axial direction inside, a sealing ring (2) for sealing on the outer wall of the rubber body (1), a base (3) connected to the bottom of the rubber body (1), and a shock-absorbing cavity (4) for providing shock-absorbing and shrinkage space inside the rubber body (1).

2. The rubber component for automotive exhaust purification equipment according to claim 1, characterized in that: The sealing rings (2) are provided in two sets, and the two sets of sealing rings (2) are equidistantly distributed about the outer wall of the rubber body (1).

3. The rubber component for automotive exhaust purification equipment according to claim 2, characterized in that: The sealing ring (2) has a circular cross-section.

4. The rubber component for automotive exhaust purification equipment according to claim 1, characterized in that: The damping cavity (4) surrounds the inner peripheral wall of the rubber body (1). There are three sets of damping cavities (4), which are equidistantly distributed on the inner wall of the rubber body (1).

5. The rubber component for automotive exhaust purification equipment according to claim 1, characterized in that: The rubber body (1) is made of hydrogenated nitrile rubber and nano carbon fiber.

6. The rubber component for automotive exhaust purification equipment according to claim 1, characterized in that: The outer surface of the rubber body (1) is coated with a protective coating composed of polyether ether ketone and silicon carbide nanoparticles.

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