Catalytic converter convenient to disassemble and assemble for vehicle

Abstract

The utility model provides a vehicle catalyst convenient to disassemble and assemble. The vehicle catalyst convenient to disassemble and assemble comprises a sub-shell, a limiting structure and a hose clamp. The number of the sub-shells is multiple, the sub-shells are sequentially and coaxially arranged, and any two adjacent sub-shells abut against each other. The abutting end of each sub-shell is fixedly provided with a fixing ring. The number of the limiting structures is multiple, each limiting structure comprises multiple limiting blocks, the limiting blocks are annularly arranged around the axes of the sub-shells at intervals, and each limiting block is provided with a clamping part which is used for making contact with the two fixing rings in butt joint and making the two fixing rings keep the relative movement tendency. The hose clamps are used for locking the limiting blocks so that the two sub-shells can be locked through the two corresponding fixing rings. According to the vehicle catalyst convenient to disassemble and assemble, the two fixing rings can be extruded in the axis direction of the sub-shells, the sealing effect of the two sub-shells can be guaranteed, meanwhile, a gap can be prevented from being formed in the butt joint position of the two sub-shells, and practicability is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of exhaust gas purification devices, and in particular relates to a catalyst for a vehicle which can be easily disassembled and assembled. Background Art

[0002] A vehicle catalytic converter primarily refers to an exhaust gas purification device, typically consisting of a cylindrical housing, a honeycomb-shaped catalytic unit located within the housing, and a filter unit located at the front of the catalytic unit. The filter unit and catalytic unit are typically housed in separate sub-housings, which are then sealed together by welding or flange connection, resulting in a split-body structure.

[0003] In the prior art, in order to facilitate subsequent maintenance and servicing, a clamp is usually provided between the two sub-housings to lock the two sub-housings together. However, this locking method can only apply pressure in the radial direction of the housing, and cannot apply pressure to the housing in the direction of the central axis of the housing. There is a certain error in the subsequent installation process of the housing, which will cause a gap to appear at the joint of the two sub-housings, thereby deteriorating the sealing effect and poor practicality. Utility Model Content

[0004] The embodiment of the present utility model provides a catalyst for a vehicle that is convenient to assemble and disassemble, and aims to solve the problem of poor practicality of the split structure adopted by the existing catalyst for a vehicle due to poor sealing effect.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide a catalytic converter for a vehicle that is convenient to disassemble and assemble, comprising:

[0006] There are multiple sub-housings, each of which is coaxially arranged in sequence, and any two adjacent sub-housings abut against each other, and a butt joint is formed between any two adjacent sub-housings; a fixing ring is fixed at the abutting end of each sub-housing;

[0007] There are multiple limiting structures, each of which corresponds to each of the butt joints; each of the limiting structures includes multiple limiting blocks, each of which is annularly spaced around the axis of each sub-housing, and each of the limiting blocks has a clamping portion for contacting the two butt-jointed fixing rings and maintaining a relative movement tendency between the two fixing rings;

[0008] There are multiple throat hoops, each of which is arranged in a one-to-one correspondence with each of the limiting structures, and each of the throat hoops is sleeved on each of the limiting blocks to lock each of the limiting blocks so as to lock the two sub-shells through the corresponding two fixing rings.

[0009] In a possible implementation, a silicone rubber gasket is provided between any two adjacent sub-housings.

[0010] In a possible implementation, the fixing ring and the sub-housing are integrally formed and connected.

[0011] In one possible implementation, each of the limit blocks has a rectangular structure, and each of the limit blocks has a trapezoidal slot for two docking fixing rings to extend into, and the trapezoidal slot is the clamping part; the trapezoidal slot has two inclined portions that respectively contact the two fixing rings.

[0012] In a possible implementation, each of the limiting blocks is provided with an arcuate portion at one end away from the trapezoidal slot, and an axis of the arcuate portion is arranged parallel to an axis of the sub-housing.

[0013] In a possible implementation, a groove is provided on the bottom surface of the trapezoidal slot, and a permanent magnet is fixed in the groove.

[0014] In this implementation, a fixing ring is provided on the end portion for docking of any adjacent sub-shells, and a plurality of limit blocks are used to make the friction portion of each limit block contact with the two abutting fixing rings. Under the action of the throat clamp, the two fixing rings can be squeezed in the axial direction of the sub-shell, so that the two fixing rings continue to have a tendency to move relative to each other, thereby making the two sub-shells in close contact, which can ensure the sealing effect of the two sub-shells and avoid the appearance of gaps at the docking point of the two sub-shells, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic structural diagram of a catalytic converter for a vehicle that is convenient to disassemble and assemble provided by an embodiment of the present utility model;

[0016] Figure 2 A schematic cross-sectional view of a catalytic converter for a vehicle that is convenient to disassemble and assemble according to an embodiment of the present invention;

[0017] Figure 3 A schematic diagram of the structure of a limiting block for a catalyst for a vehicle that is conveniently disassembled and assembled, provided by an embodiment of the utility model;

[0018] Description of reference numerals:

[0019] 10. Sub-housing; 11. Fixing ring;

[0020] 20. Limit block; 21. Trapezoidal slot; 22. Arc portion; 23. Inclined portion; 24. Permanent magnet;

[0021] 30. Hose clamp;

[0022] 40. Silicone rubber gasket. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] Please also refer to Figure 1 and Figure 2 , the conveniently disassembled and assembled vehicle catalyst provided by the present invention will now be described. The conveniently disassembled and assembled vehicle catalyst comprises a sub-housing 10, a limiting structure and a throat clamp 30. There are a plurality of sub-housings 10, each sub-housing 10 is coaxially arranged in sequence, and any two adjacent sub-housings 10 are abutted, and a butt joint is formed between any two adjacent sub-housings 10. A fixing ring 11 is fixed at the abutting end of each sub-housing 10. There are a plurality of limiting structures, and each limiting structure corresponds to each butt joint one by one. Each limiting structure includes a plurality of limiting blocks 20, each limiting block 20 is arranged at an annular interval around the axis of each sub-housing 10, and each limiting block 20 has a clamping portion for contacting the two butted fixing rings 11 and keeping the two fixing rings 11 with a relative movement tendency. There are multiple throat hoops 30, each throat hoop 30 is arranged in a one-to-one correspondence with each limiting structure, and each throat hoop 30 is sleeved on each limiting block 20 to lock each limiting block 20, so as to lock the two sub-housings 10 through the corresponding two fixing rings 11.

[0025] Compared with the prior art, the catalytic converter for vehicles provided in this embodiment is convenient for assembly and disassembly. A fixing ring 11 is provided on the end portion of any adjacent sub-housing 10 for docking. A plurality of limit blocks 20 are used to make the friction portion of each limit block 20 contact the two abutting fixing rings 11. Under the action of the throat clamp 30, the two fixing rings 11 can be squeezed in the axial direction of the sub-housing 10, so that the two fixing rings 11 have a continuous tendency to move relative to each other, thereby making the two sub-housings 10 in close contact, thereby ensuring the sealing effect of the two sub-housings 10 and avoiding the formation of gaps at the docking point of the two sub-housings 10, thereby having strong practicality.

[0026] It should be noted that different processing units, such as a honeycomb catalytic unit, a filtering unit, etc., are fixedly installed inside each sub-housing 10, which are combined together to form a purifier. This technology is existing technology and will not be repeated here.

[0027] In some embodiments, the sub-housing 10 may be configured as follows: Figure 2 The structure shown. Figure 2 A silicone rubber gasket 40 is provided between any two adjacent sub-housings 10. The two butted fixing rings 11 will form a butted annular surface. A silicone rubber ring is placed in the annular surface to ensure the sealing effect, while also ensuring good high temperature resistance and sealing performance.

[0028] In some embodiments, the fixing ring 11 may be formed as follows: Figure 2 The structure shown. Figure 2 The fixing ring 11 and the sub-housing 10 are integrally formed and connected, which is convenient for manufacturing and can also ensure structural strength.

[0029] In some embodiments, the above-mentioned limit block 20 can be used as follows Figure 1 and Figure 3 The structure shown. Figure 1 and Figure 3 Each limit block 20 has a rectangular parallelepiped structure and has a trapezoidal slot 21 for two docking fixing rings 11 to extend into. The trapezoidal slot 21 has two inclined portions 23 that are in contact with the two fixing rings 11 respectively.

[0030] The two inclined portions 23 provided by the trapezoidal slot 21 can be grounded with the two fixing rings 11 respectively. As the limit block 20 is squeezed by the throat clamp 30, the two inclined portions 23 will respectively give the two fixing rings 11 an axial component of force, thereby ensuring the relative movement of the two fixing rings 11 and tightly fitting together, which can ensure the sealing effect and avoid the appearance of gaps caused by errors during the overall installation process.

[0031] The trapezoidal slot 21 may be an isosceles trapezoid.

[0032] In some embodiments, the above-mentioned limit block 20 can be used as follows Figure 1 and Figure 3 The structure shown. Figure 1 and Figure 3 Each limit block 20 is provided with an arc surface 22 at one end away from the trapezoidal slot 21. The axis of the arc surface 22 is arranged parallel to the axis of the sub-housing 10. The arrangement of the arc surface 22 can ensure that the contact area with the throat hoop 30 is increased, thereby ensuring uniform force. At the same time, it can also avoid stress concentration with the throat hoop 30 and ensure stable sliding of the throat hoop 30 during tightening.

[0033] In some embodiments, the above-mentioned limit block 20 can be used as follows Figure 3 The structure shown. Figure 3 A groove is provided on the bottom surface of the trapezoidal slot 21, and a permanent magnet 24 is fixed in the groove.

[0034] Before the throat clamp 30 locks each limit block 20, each limit block 20 needs to be connected to each fixing ring 11 first. The permanent magnet 24 on the bottom surface of the reminder slot can be directly attracted to the fixing ring 11 to fix the limit block. This can facilitate the fixed installation of multiple limit blocks 20 before the throat clamp 30 is locked, and is highly practical.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A catalytic converter for a vehicle that is easy to disassemble and assemble, characterized in that: include: There are multiple sub-housings, each of which is coaxially arranged in sequence, and any two adjacent sub-housings abut against each other, and a butt joint is formed between any two adjacent sub-housings; a fixing ring is fixed at the abutting end of each sub-housing; There are multiple limiting structures, each of which corresponds to each of the butt joints; each of the limiting structures includes multiple limiting blocks, each of which is arranged at annular intervals around the axis of each sub-housing, and each of the limiting blocks has a clamping portion for contacting the two butt-jointed fixing rings and maintaining the two fixing rings with a relative movement tendency; each of the limiting blocks has a rectangular parallelepiped structure, and each of the limiting blocks has a trapezoidal slot for the two butt-jointed fixing rings to extend into, the trapezoidal slot being the clamping portion; the trapezoidal slot has two inclined portions that respectively contact the two fixing rings; There are multiple throat hoops, each of which is arranged in a one-to-one correspondence with each of the limiting structures, and each of the throat hoops is sleeved on each of the limiting blocks to lock each of the limiting blocks so as to lock the two sub-shells through the corresponding two fixing rings.

2. The conveniently disassembled vehicle catalytic converter according to claim 1, characterized in that: A silicone rubber gasket is provided between any two adjacent sub-shells.

3. The conveniently disassembled vehicle catalytic converter according to claim 1, characterized in that: The fixing ring and the sub-housing are integrally formed and connected.

4. The conveniently disassembled vehicle catalytic converter according to claim 1, characterized in that: An arcuate portion is provided at one end of each of the limiting blocks away from the trapezoidal slot, and an axis of the arcuate portion is arranged parallel to an axis of the sub-housing.

5. The conveniently disassembled vehicle catalytic converter according to claim 1, characterized in that: A groove is provided on the bottom surface of the trapezoidal slot, and a permanent magnet is fixed in the groove.

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