Catalyst end cover

Abstract

The utility model provides a catalyst end cover which comprises an end cover body. A cavity is integrally formed in the end cover body, an air inlet is integrally formed in one side of the end cover body, the air inlet is communicated with the cavity, a connecting port is integrally formed in one side of the end cover body, and the connecting port is communicated with the cavity; the first limiting ring is arranged to be matched with the second limiting ring, when the connecting port is connected with the catalytic converter, the sealing ring is extruded, the sealing ring fills the space between the connecting port and the catalytic converter, the connecting port and the catalytic converter are welded, the connection is fixed, the connecting position of the connecting port and the catalytic converter is sealed and protected through the sealing ring, and the sealing effect is good. And when local welding breakage occurs, the first limiting ring is matched with the second limiting ring to centralize the connecting position of the connecting port and the catalytic converter, so that the sealing ring continuously provides sealing protection for the connecting position, and normal use of the catalytic converter is prevented from being affected by air leakage.

Description

Technical Field

[0001] The utility model relates to an end cover, in particular to a catalyst end cover, and belongs to the technical field of catalyst end covers. Background Art

[0002] Three-way catalysis refers to the catalysis that converts harmful gases such as CO, HC and NOx discharged from automobile exhaust into harmless carbon dioxide, water and nitrogen through oxidation and reduction. It mainly uses a three-way catalytic converter. The carrier component of the three-way catalytic converter is a porous ceramic material installed in a special exhaust pipe. It is called a carrier because it does not participate in the catalytic reaction itself, but is covered with a layer of precious metals and rare earth coatings such as platinum, rhodium, palladium, etc. It is the most important external purification device installed in the automobile exhaust system. The three-way catalytic converter is the most important external purification device installed in the automobile exhaust system. Because this catalyst can simultaneously convert the three main harmful substances in the exhaust gas into harmless substances;

[0003] A Chinese patent publication (CN201420324804.2) discloses a catalyst end cover and a catalyst, which protects the gasket in the catalyst housing to prevent the gasket from being eroded by high-temperature air. However, when the end cover is used, its connection lacks a sealing component and has poor sealing performance. As a result, after the port is connected to the catalyst, if the local welding at the connection is broken, it will cause leakage at the connection and insufficient sealing.

[0004] In order to solve the above technical problems, a catalyst end cover is proposed. Utility Model Content

[0005] In view of this, the utility model provides a catalyst end cover to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0006] The technical solution of the utility model is implemented as follows: a catalyst end cover, comprising an end cover body;

[0007] A cavity is integrally formed inside the end cover body, an air inlet is integrally formed on one side of the end cover body, the air inlet is communicated with the cavity, a connection port is integrally formed on one side of the end cover body, the connection port is communicated with the cavity, a first limiting ring and a second limiting ring are integrally formed on one side of the interior of the connection port, a sealing ring is provided on one side of the interior of the connection port, and the sealing ring is engaged with the connection port through the first limiting ring and the second limiting ring.

[0008] Further preferably, a mounting hole is provided on one side of the end cover body.

[0009] Further preferably, a flow guide cavity is integrally formed on one side of the interior of the end cover body.

[0010] Further preferably, a hoop is mounted on one side of the air inlet.

[0011] Further preferably, a positioning ring is integrally formed on one side of the connection port.

[0012] Further preferably, the end cover body is composed of an alloy layer and a ceramic fiber layer, and the ceramic fiber layer is fixedly connected to one side of the alloy layer.

[0013] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0014] 1. The utility model provides a first limiting ring in cooperation with a second limiting ring. When the connection port is connected to the catalyst, the sealing ring is squeezed to fill the space between the connection port and the catalyst. The connection port and the catalyst are welded to fix the connection. The connection between the connection port and the catalyst is sealed and protected by the sealing ring to prevent air leakage. When the local welding is broken, the connection between the connection port and the catalyst is straightened by the first limiting ring in cooperation with the second limiting ring, so that the sealing ring continues to provide sealing protection for the connection to prevent air leakage from affecting the normal use of the utility model.

[0015] Second, the utility model guides the gas by providing a guide cavity and provides a mounting hole to facilitate the installation of the sensor.

[0016] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 It is a side view structural diagram of the utility model;

[0020] Figure 3 This is a bottom view of the structure of the utility model;

[0021] Figure 4 It is a cross-sectional structural diagram of the utility model;

[0022] Figure 5 This is an enlarged view of the structure of area A in the utility model;

[0023] Figure 6 It is a structural diagram of the end cover body of the utility model.

[0024] Figure numerals: 10, end cover body; 101, alloy layer; 102, ceramic fiber layer; 11, air inlet; 12, connection port; 13, cavity; 14, guide cavity; 15, mounting hole; 16, hoop; 17, positioning ring; 18, sealing ring; 19, first limiting ring; 20, second limiting ring. DETAILED DESCRIPTION

[0025] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0026] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0027] like Figure 1-6 As shown, the embodiment of the utility model provides a catalyst end cover, which is composed of an end cover body 10, a hoop ring 16 and a sealing ring 18.

[0028] The end cover body 10 is integrally formed with a cavity 13 inside, and an air inlet 11 is integrally formed on one side of the end cover body 10. The air inlet 11 is connected to the cavity 13. A hoop 16 is mounted on one side of the air inlet 11. The hoop 16 is fixedly connected to the air inlet 11. The air inlet 11 is converged and limited by the hoop 16 to prevent the air inlet 11 from deforming and affecting the air intake efficiency. A connection port 12 is integrally formed on one side of the end cover body 10. The connection port 12 is connected to the cavity 13. One side of the connection port 12 is divided into A first limiting ring 19 and a second limiting ring 20 are integrally formed, and the sealing ring 18 is engaged with the connecting port 12 through the first limiting ring 19 and the second limiting ring 20. The first limiting ring 19 and the second limiting ring 20 limit and fix the sealing ring 18 while straightening the sealing ring 18 to prevent excessive deformation of the sealing ring 18. At the same time, the connection between the connecting port 12 and the catalyst is straightened to prevent the connection port 12 from shifting and causing the sealing ring 18 to be unable to fill the connection between the connecting port 12 and the catalyst.

[0029] In one embodiment, in order to facilitate the installation of components such as sensors, a mounting hole 15 is opened on one side of the end cover body 10 .

[0030] In one embodiment, in order to facilitate the guidance of the airflow entering the end cover body 10 , a flow guide cavity 14 is integrally formed on one side of the interior of the end cover body 10 .

[0031] In one embodiment, in order to facilitate observation of the connection status between the connection port 12 and the catalyst, a positioning ring 17 is integrally formed on one side of the connection port 12 , and the raised positioning ring 17 facilitates confirmation of whether the connection port 12 and the catalyst are aligned.

[0032] In one embodiment, in order to enhance the high temperature resistance of the end cover body 10 , the end cover body 10 is composed of an alloy layer 101 and a ceramic fiber layer 102 , and the ceramic fiber layer 102 is fixedly connected to one side of the alloy layer 101 .

[0033] When the utility model is in operation: the sealing ring 18 is placed between the first limiting ring 19 and the second limiting ring 20, so that the sealing ring 18 is engaged with the concave surfaces of the first limiting ring 19 and the second limiting ring 20 to complete the fixing of the sealing ring 18, the connecting port 12 is connected to the catalyst, the connection state of the connecting port 12 is observed through the positioning ring 17, after the connection, the catalyst cooperates with the connecting port 12 to squeeze the sealing ring 18, so that the sealing ring 18 fills the connection, the connecting port 12 and the catalyst are welded, the end cover body 10 is connected and fixed to the catalyst, the air inlet 11 is connected to the pipeline, the gas enters the cavity 13 through the air inlet 11, and the guide cavity 14 guides the gas.

[0034] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A catalyst end cover, characterized in that: It comprises an end cover body (10); A cavity (13) is integrally formed inside the end cover body (10), an air inlet (11) is integrally formed on one side of the end cover body (10), the air inlet (11) is in communication with the cavity (13), a connection port (12) is integrally formed on one side of the end cover body (10), the connection port (12) is in communication with the cavity (13), a first limiting ring (19) and a second limiting ring (20) are integrally formed on one side of the interior of the connection port (12), a sealing ring (18) is provided on one side of the interior of the connection port (12), the sealing ring (18) is engaged with the connection port (12) through the first limiting ring (19) and the second limiting ring (20).

2. A catalyst end cover according to claim 1, characterized in that: A mounting hole (15) is provided on one side of the end cover body (10).

3. The catalyst end cover according to claim 1, characterized in that: A flow guide cavity (14) is integrally formed on one side of the interior of the end cover body (10).

4. The catalyst end cover according to claim 1, characterized in that: A hoop ring (16) is mounted on one side of the air inlet (11).

5. The catalyst end cover according to claim 1, characterized in that: A positioning ring (17) is integrally formed on one side of the connection port (12).

6. The catalyst end cover according to claim 1, characterized in that: The end cover body (10) is composed of an alloy layer (101) and a ceramic fiber layer (102), and the ceramic fiber layer (102) is fixedly connected to one side of the alloy layer (101).

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