CN214499211U

CN214499211U - Combined three-way catalytic converter

Info

Publication number: CN214499211U
Application number: CN202120576479.9U
Authority: CN
Inventors: 樊江波
Original assignee: Chongqing Xinhuilian Technology Co ltd
Current assignee: Chongqing Xinhuilian Technology Co ltd
Priority date: 2021-03-22
Filing date: 2021-03-22
Publication date: 2021-10-26
Anticipated expiration: 2031-03-22

Abstract

The utility model provides a combined three-way catalytic converter, which comprises a shell with an air inlet end and an air outlet end and a three-way catalyst core arranged in the shell; the shell comprises a shell front section, a shell middle section and a shell rear section, and the shell front section and the shell middle section, and the shell middle section and the shell rear section are detachably, hermetically and fixedly connected; the three-way catalyst core comprises a plurality of cores, the cores are serially connected and installed in the middle section of the shell, every two adjacent cores are detachably connected, and a collecting channel is arranged between every two adjacent cores. The utility model discloses a three way catalyst converter's casing can be installed and removed, and the three way catalyst core is convenient for install and remove, and the three way catalyst core is convenient for change after the body is damaged by a plurality of core combinations, can effectively improve recycle rate.

Description

Combined three-way catalytic converter

Technical Field

The utility model belongs to the technical field of automobile exhaust processing system, concretely relates to modular three way catalyst converter.

Background

The three-way catalyst is the most important external purifying device installed in the automobile exhaust system, and can convert harmful gases such as CO, HC hydrocarbon, NOx nitrogen oxide and the like discharged by automobile exhaust into harmless carbon dioxide, water and nitrogen through oxidation and reduction. The catalyst can simultaneously convert three main harmful substances in the exhaust gas into harmless substances, so the catalyst is called as a ternary catalyst. The existing three-way catalyst comprises a shell with an air inlet end and an air outlet end and a three-way catalyst core arranged in the shell, wherein the air inlet end is connected with an exhaust outlet of an engine, and automobile exhaust discharged by the engine enters the shell to be subjected to oxidation and reduction reactions by the three-way catalyst core and then is discharged from the air outlet end.

The three-way catalyst core consists of a carrier and a catalyst sprayed on the surface of the carrier, wherein the carrier is generally made of aluminum oxide and has a spherical shape, a polygonal shape, a net-shaped partition plate and the like; the purifying agent actually plays a catalytic role, also called as a catalyst, and most of the catalysts of the three-way catalyst with better performance are made of rare metals such as platinum (Pt), palladium (Pd), rhodium (Rn) and the like, so the price is high. The three-way catalyst core that current three-way catalyst converter's casing inside set up is structure as an organic whole, appears local damage and just needs to change whole three-way catalyst core, and recycle is rateed lowly.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model provides a modular three way catalyst converter, this three way catalyst converter's casing can be dismantled, is convenient for install and remove the three way catalyst core, and the three way catalyst core is formed by a plurality of core combinations, and the change of being convenient for after one of them core is damaged has effectively improved recycle.

The utility model discloses a following technical scheme realizes:

a combined three-way catalyst comprises a shell with an air inlet end and an air outlet end and a three-way catalyst core arranged inside the shell, and is characterized in that:

the shell comprises a shell front section, a shell middle section and a shell rear section, the shell front section and the shell middle section and the shell rear section are detachably, hermetically and fixedly connected, and the structure is convenient for dismounting and replacing the three-way catalyst core in the shell;

the three-way catalyst core comprises a plurality of cores, the cores are serially connected and installed inside the middle section of the shell, every two adjacent cores are detachably connected, and a collecting channel is arranged between every two adjacent cores.

According to the above technical scheme, the utility model provides a pair of modular three way catalyst converter, beneficial effect lies in: when the three-way catalyst is arranged in an automobile exhaust system, the front section and the rear section of the shell are respectively connected with exhaust pipelines at the front end and the rear end; automobile exhaust flows in from the air inlet end of the front section of the shell, flows through each core body in the middle section of the shell, is subjected to oxidation and reduction reaction and then is discharged from the air outlet end of the rear section of the shell; the shell of the three-way catalyst can be assembled and disassembled, the three-way catalyst core is convenient to assemble and disassemble, the three-way catalyst core is formed by combining a plurality of core bodies, one of the core bodies is convenient to replace after being damaged, and the recycling rate can be effectively improved.

Further limiting, flanges are respectively arranged at the front end and the rear end of the front shell section, the middle shell section and the rear shell section, and two adjacent flanges are fixedly connected between the front shell section and the middle shell section and between the middle shell section and the rear shell section through bolt and nut assemblies; specifically, the other flanges of the front section and the rear section of the shell are respectively connected with the exhaust pipelines at the front end and the rear end.

Further inject, every the connection terminal surface of flange is equallyd divide and is do not equipped with the seal groove, and the seal groove intussuseption is equipped with sealed the pad when bolt and nut subassembly connects two adjacent flanges, and behind the fastening bolt and nut subassembly, sealed pad receives the extrusion to contract, improves sealing performance.

Further, the cross section of the shell is square or round, and the three-way catalyst core is square or round corresponding to the shape of the shell.

Further limiting, one end of each core body is provided with an inner step, the other end of each core body is provided with an outer step, two adjacent core bodies are connected through the outer steps extending into the inner steps, and an elastic sealing ring is arranged between each outer step and each inner step; specifically, when the elastic sealing ring is installed, the elastic sealing ring between two adjacent core bodies is extruded, and the outer diameter of the elastic sealing ring is increased, so that the sealing performance between the elastic sealing ring and the inner side wall of the shell is enhanced; specifically, casing anterior segment and casing back end are close to casing middle section one side and are equipped with interior step respectively, be convenient for and seal between the core.

Further limiting, each core body is honeycomb-shaped, automobile exhaust enters the collecting channel after passing through one core body and is shunted to the pore of the next core body again through the collecting channel, and the structure can improve the oxidation-reduction efficiency of the automobile exhaust.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the three-way catalyst core of the present invention.

Fig. 3 is a front view of the three-way catalyst core of the present invention.

In the drawings: 1-shell, 11-front shell section, 12-middle shell section, 13-rear shell section, 2-three-way catalyst core, 21-core body, 22-collecting channel, 23-inner step, 24-outer step, 3-flange, 4-bolt-nut component, 5-sealing gasket and 6-elastic sealing ring.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

In the description of the present application, it is to be understood that the terms "front", "back", "inside", "outside", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.

As shown in fig. 1 to 3, a combined three-way catalyst includes a housing 1 having an inlet end and an outlet end, and a three-way catalyst core 2 disposed inside the housing 1;

the shell 1 comprises a shell front section 11, a shell middle section 12 and a shell rear section 13, the shell front section 11 and the shell middle section 12 and the shell rear section 13 are detachably, hermetically and fixedly connected, and the structure is convenient for dismounting and replacing the three-way catalyst core 2 in the shell 1; specifically, flanges 3 are respectively arranged at the front end and the rear end of the shell front section 11, the shell middle section 12 and the shell rear section 13, and two adjacent flanges 3 are fixedly connected between the shell front section 11 and the shell middle section 12 and between the shell middle section 12 and the shell rear section 13 through bolt and nut assemblies 4; specifically, the other flanges 3 of the front shell section 11 and the rear shell section 13 are respectively connected with exhaust pipelines at the front end and the rear end;

the three-way catalyst core 2 comprises a plurality of core bodies 21, the core bodies 21 are serially connected and installed in the middle section 12 of the shell, two adjacent core bodies 21 are detachably connected, and a collecting channel 22 is arranged between two adjacent core bodies 21; one end of each core body 21 is provided with an inner step 23, the other end of each core body 21 is provided with an outer step 24, two adjacent core bodies 21 are connected by extending the outer steps 24 into the inner steps 23, and an elastic sealing ring 6 is arranged between each outer step 24 and the inner step 23; specifically, during installation, the elastic sealing ring 6 between two adjacent core bodies 21 is extruded, and the outer diameter of the elastic sealing ring 6 is increased, so that the sealing performance between the elastic sealing ring 6 and the inner side wall of the shell 1 is enhanced; specifically, the front shell section 11 and the rear shell section 13 are respectively provided with an inner step 23 on the side close to the middle shell section 12, so as to facilitate sealing with the core 21.

In this embodiment, every the connection terminal surface of flange 3 is equallyd divide and is do not equipped with the seal groove, and the seal groove intussuseption is equipped with sealed the pad 5 when bolt nut subassembly 4 connects two adjacent flanges 3, and behind the fastening bolt nut subassembly 4, sealed pad 5 receives the extrusion to contract, improves sealing performance.

In this embodiment, the cross section of the casing 1 is circular, and the three-way catalyst core 2 is in a shape corresponding to the shape of the casing 1 or circular.

In this embodiment, each of the core bodies 21 is honeycomb-shaped, and the automobile exhaust passes through one core body 21, enters the collecting channel 22, and is shunted to the pores of the next core body 21 again by the collecting channel 22.

The working principle of the embodiment is as follows: when the three-way catalytic converter is arranged in an automobile exhaust system, a plurality of cores 21 are arranged inside a shell middle section 12, the shell middle section 12 is connected with a shell front section 11 and a shell rear section 13 through a bolt and nut assembly 4, when the bolt and nut assembly 4 is pre-tightened, an elastic sealing ring 6 between an outer step 24 and an inner step 23 is extruded, the outer diameter of the elastic sealing ring 6 is increased, and therefore the sealing performance between the elastic sealing ring 6 and the inner side wall of a shell 1 is enhanced; the front shell section 11 and the rear shell section 13 are respectively connected with exhaust pipelines at the front end and the rear end through flanges 3; automobile exhaust flows in from the air inlet end of the front shell section 11, flows through each core body 21 in the middle shell section 12, is subjected to oxidation and reduction reaction and then is discharged from the air outlet end of the rear shell section 13; the shell 1 of the three-way catalyst can be assembled and disassembled, the three-way catalyst core 2 is convenient to assemble and disassemble, the three-way catalyst core 2 is formed by combining a plurality of core bodies 21, one of the core bodies 21 is convenient to replace after being damaged, and the recovery utilization rate can be effectively improved.

Claims

1. A combined three-way catalyst comprises a shell with an air inlet end and an air outlet end and a three-way catalyst core arranged inside the shell, and is characterized in that:

the shell comprises a shell front section, a shell middle section and a shell rear section, and the shell front section and the shell middle section, and the shell middle section and the shell rear section are detachably, hermetically and fixedly connected;

2. The modular three-way catalyst of claim 1, wherein: the cross section of the shell is square or round, and the shape of the three-way catalyst core corresponds to that of the shell.

3. The modular three-way catalyst of claim 1, wherein: the front end and the rear end of the front shell section, the rear shell section and the front shell section are respectively provided with a flange, and two adjacent flanges are fixedly connected between the front shell section and the middle shell section and between the middle shell section and the rear shell section through bolt and nut assemblies.

4. The combined three-way catalyst of claim 3, wherein: and each connecting end face of the flange is provided with a sealing groove, and the sealing grooves are filled with sealing gaskets when the bolt and nut assemblies are connected with two adjacent flanges.

5. The combined three-way catalyst according to any one of claims 1 to 4, characterized in that: every the one end of core all is equipped with interior step, the other end all is equipped with outer step, stretches into interior step through outer step between two adjacent cores and links to each other, and is equipped with the elastic seal circle between outer step and the interior step.

6. The combined three-way catalyst of claim 5, wherein: each of the cores is honeycomb-shaped.