CN114233452A

CN114233452A - Automobile exhaust pipe sealing device based on aluminum oxide

Info

Publication number: CN114233452A
Application number: CN202111565547.2A
Authority: CN
Inventors: 奚卫平
Original assignee: Dongtai Smile New Material Technology Co ltd
Current assignee: Dongtai Smile New Material Technology Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-03-25

Abstract

The invention discloses an automobile exhaust pipe sealing device based on aluminum oxide, which belongs to the technical field of automobile exhaust, and comprises a connecting pipe, a sealing mechanism and an exhaust pipe, wherein the sealing mechanism comprises a shell and sealing connecting mechanisms arranged on the left side and the right side of the shell, and one ends of the connecting pipe and the exhaust pipe close to the shell are connected with the shell through the sealing connecting mechanisms, a metal pipe is arranged on the outer wall of the shell, a second through groove in the metal pipe can be communicated with a first through groove in the shell through a third through groove and a fourth through groove, when the temperature of exhaust gas discharged into the shell in the connecting pipe is overhigh, a valve can be opened through the rotation of a small motor, so that the gas in the first through groove enters the second through groove from the fourth through groove, hot air flow conducts heat to the metal pipe in the second through groove to realize heat dissipation and cooling, and then is discharged into the first through groove from the third through groove to realize the control of the temperature of the exhaust gas, the condition that the catalytic unit is invalid due to overhigh temperature of the tail gas is avoided.

Description

Automobile exhaust pipe sealing device based on aluminum oxide

Technical Field

The invention relates to the technical field of automobile exhaust, in particular to an aluminum oxide-based automobile exhaust pipe sealing device.

Background

Automobiles have become generally closely tied to people's lives, and the automobile industry has grown faster and faster. People pay more and more attention to the dynamic property, the economical efficiency and the environmental protection performance of the automobile. The sealing performance of the exhaust system has an influence on the dynamic performance, the economical efficiency and the environmental protection performance of the automobile.

Automobile exhaust system mainly comprises catalytic unit, the silencer unit, the exhaust connecting pipe, spare part such as sealed pad constitutes, the sealed mode of current blast pipe is mostly sealed through adding the metal gasket and sealing up the realization fastening between a plurality of spare part flanges, adopt this kind of sealed mode to realize sealed effect, but when the temperature in the blast pipe is too high, can lead to catalytic unit to become invalid, can't realize exhaust filtration purification's effect, cause air pollution, this kind of sealed mode is with high costs simultaneously, the phenomenon that leaks is caused to the sealed harmfully appearing in addition.

Disclosure of Invention

The invention aims to provide an automobile exhaust pipe sealing device based on alumina, which aims to solve the problems that when the temperature in an exhaust pipe is too high, a catalytic unit fails, and the function of filtering and purifying exhaust gas cannot be realized.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an automobile exhaust pipe sealing device based on aluminium oxide, includes connecting pipe, sealing mechanism and blast pipe, sealing mechanism includes the casing, establishes the sealing connection mechanism in the casing left and right sides, and the one end that connecting pipe, blast pipe and casing are close all is connected with the casing through sealing connection mechanism, transversely seted up logical groove one in the casing, and be equipped with on the casing outer wall and be used for radiating tubular metal resonator, seted up logical groove two in the tubular metal resonator, and the casing left and right sides vertically seted up logical groove three respectively and led to groove four, lead to groove three, lead to groove four and all communicate with logical groove one, lead to groove two, and lead to the groove four and be equipped with the valve, be equipped with the small-size motor in the casing, and the output shaft of small-size motor runs through logical groove four and is connected with the one end of valve, the other end of valve passes through bearing and leads to groove four inner wall connections.

Preferably, the outer wall of the metal pipe is sleeved with a plurality of metal rings, and heat-conducting silicone grease is filled between the outer wall of the metal pipe and the second through groove.

Preferably, sealing connection mechanism includes arc locating plate, arc fly leaf, positioning bolt, fixing bolt, hinged joint is passed through with the one end of arc fly leaf to the arc locating plate, and the other end of arc locating plate and arc fly leaf all is equipped with the connecting block, two the connecting block passes through fixing bolt and connects, positioning bolt transversely runs through arc locating plate and spiro union on the casing lateral wall.

Preferably, the inner walls of the arc-shaped positioning plate and the arc-shaped movable plate are provided with grooves, sealing gaskets are arranged in the grooves, the left side of each sealing gasket is arranged at the connecting end of the exhaust pipe and the output end of the corresponding shell in the grooves in the arc-shaped positioning plate and the arc-shaped movable plate, sealing rings are arranged at the connecting ends of the exhaust pipes and the output end of the corresponding shell, and the sealing gaskets are coated on the outer walls of the connecting ends of the exhaust pipes and the output end of the corresponding shell.

Preferably, the right side be equipped with the link of connecting pipe and the input of casing in the recess in arc locating plate and the arc fly leaf, and the link of connecting pipe also is equipped with the sealing ring with the input junction of casing, the cladding of sealed pad is at the outer wall of the link of connecting pipe and the input of casing.

Preferably, a first movable groove is formed in the arc-shaped positioning plate, a second movable groove is longitudinally formed in the arc-shaped movable plate, a third movable groove is formed in the sealing gasket, a serpentine pipeline is arranged in the shell, two ends of the serpentine pipeline are respectively communicated with the first movable groove in the left arc-shaped positioning plate and the second movable groove in the right arc-shaped positioning plate, and the third movable groove is communicated with the first movable groove and the second movable groove.

Preferably, a connector is arranged on the arc-shaped movable plate and is communicated with the second movable groove.

Preferably, a three-way catalyst is arranged in the exhaust pipe.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the metal pipe is arranged on the outer wall of the shell, the second through groove in the metal pipe can be communicated with the first through groove in the shell through the third through groove and the fourth through groove, when the temperature of tail gas discharged into the shell in the connecting pipe is overhigh, the valve can be opened through the rotation of the miniature motor, so that gas in the first through groove enters the second through groove from the fourth through groove, hot gas flow conducts heat to the metal pipe in the second through groove to realize heat dissipation and cooling, and then the tail gas is discharged into the first through groove from the third through groove, the control on the temperature of the tail gas is realized, and the condition that a catalytic unit is invalid due to overhigh temperature of the tail gas is avoided.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the housing of the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2 according to the present invention;

fig. 4 is a cross-sectional view of the sealing attachment of the present invention.

In the figure: 1. a connecting pipe; 2. a housing; 3. an exhaust pipe; 4. an arc-shaped positioning plate; 5. an arc-shaped movable plate; 6. fixing the bolt; 7. connecting blocks; 8. positioning the bolt; 9. a metal tube; 10. a metal ring; 11. heat-conducting silicone grease; 12. a fourth through groove; 13. a valve; 14. a third through groove; 15. a second through groove; 16. a first through groove; 17. a serpentine conduit; 18. a gasket; 19. a third movable groove; 20. a first movable groove; 21. a seal ring; 22. a second movable groove; 23. and (7) connecting ports.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example (b):

referring to fig. 1-4, the present invention provides a technical solution: an automobile exhaust pipe sealing device based on aluminum oxide comprises a connecting pipe 1, a sealing mechanism and an exhaust pipe 3, wherein the sealing mechanism comprises a shell 2 and sealing connecting mechanisms arranged on the left side and the right side of the shell 2, one ends of the connecting pipe 1, the exhaust pipe 3 and the shell 2 which are close to each other are connected with the shell 2 through the sealing connecting mechanisms, the sealing connecting mechanisms realize the sealing of the connecting positions of the connecting pipe 1, the exhaust pipe 3 and the shell 2, a first through groove 16 is transversely formed in the shell 2, a metal pipe 9 for heat dissipation is arranged on the outer wall of the shell 2, a second through groove 15 is formed in the metal pipe 9, a third through groove 14 and a fourth through groove 12 are longitudinally formed in the left side and the right side of the shell 2 respectively, the third through groove 14 and the fourth through groove 12 are communicated with the first through groove 16 and the second through groove 15, when hot air flow in the shell 2 is exhausted into the metal pipe 9, the heat of the air flow is conducted onto the metal pipe 9 through a heat conduction mode, do benefit to quick heat dissipation, and be equipped with valve 13 in leading to groove four 12, be equipped with the small-size motor in the casing 2, and the output shaft of small-size motor runs through to lead to groove four 12 and be connected with the one end of valve 13, the other end of valve 13 passes through the bearing and leads to four 12 interior wall connections in the groove, and the small-size motor can work and drive valve 13 and rotate to the opportunity in leading to groove four 12 is got into from leading to groove one 16 to control gas.

The cover is equipped with a plurality of becket 10 on the tubular metal resonator 9 outer wall, and packs between tubular metal resonator 9 outer wall and the logical groove two 15 and have heat conduction silicone grease 11, on 9 outer walls of tubular metal resonator and becket 10 with the heat conduction through heat conduction silicone grease 11, realizes the heat dissipation cooling.

The sealing connection mechanism comprises an arc-shaped positioning plate 4, an arc-shaped movable plate 5, a positioning bolt 8 and a fixing bolt 6, wherein the arc-shaped positioning plate 4 is connected with one end of the arc-shaped movable plate 5 through a hinge, the other ends of the arc-shaped positioning plate 4 and the arc-shaped movable plate 5 are respectively provided with a connecting block 7, the two connecting blocks 7 are connected through the fixing bolt 6, the positioning bolt 8 transversely penetrates through the arc-shaped positioning plate 4 and is in threaded connection with the side wall of the shell 2, the arc-shaped positioning plate 4 cannot move on the side wall of the shell 2, the arc-shaped movable plate 5 can rotate by taking the hinged part as an axis through the hinge, the connecting pipe 1, the exhaust pipe 3 and the shell 2 are conveniently installed and connected, the inner walls of the arc-shaped positioning plate 4 and the arc-shaped movable plate 5 are provided with grooves, sealing gaskets 18 are arranged in the grooves, the sealing effect is achieved, and the connecting end of the exhaust pipe 3 and the output end of the shell 2 are arranged in the grooves in the arc-shaped positioning plate 4 and the arc-shaped movable plate 5 on the left side, and the link of blast pipe 3 and the output junction of casing 2 are equipped with sealing ring 21, sealed 18 cladding is at the link of blast pipe 3, the outer wall of the output of casing 2, the right side be equipped with the link of connecting pipe 1 and the input of casing 2 in the recess in arc locating plate 4 and the arc fly leaf 5, and the link of connecting pipe 1 and the input junction of casing 2 also are equipped with sealing ring 21, sealed 18 cladding is at the outer wall of the link of connecting pipe 1 and the input of casing 2, set up movable groove one 20 in the arc locating plate 4, and vertically set up movable groove two 22 in the arc fly leaf 5, set up movable groove three 19 in sealed 18, be equipped with snakelike pipeline 17 in the casing 2, and the both ends of snakelike pipeline 17 communicate with movable groove one 20 in the arc locating plate 4 about respectively, movable groove three 19 and movable groove one 20, The second movable groove 22 is communicated, the arc-shaped movable plate 5 is provided with a connecting port 23, the connecting port 23 is communicated with the second movable groove 22, a three-way catalyst is arranged in the exhaust pipe 3, and the three-way catalyst is composed of a shell, a damping layer, a carrier and a catalyst. A catalyst is a substance that itself does not change in morphology or mass, but rather promotes a chemical reaction. The carrier material of the catalyst is mainly honeycomb ceramic, the carrier coating is usually alumina, and the noble metal in the carrier is Rh, Pt or Pd. Harmful gases CO, HC and NOx are respectively subjected to oxidation-reduction reaction in the three-way catalyst to generate harmless CO2, H2O and N2, and the catalyst is used for reducing harmful substances in automobile exhaust.

The working principle is as follows: when in use, the connecting port 23 on the right arc-shaped movable plate 5 is externally connected with a cooling liquid pipe, cooling liquid enters the second movable groove 22 in the right arc-shaped movable plate 5 from the right connecting port 23 and enters the third movable groove 19 in the right arc-shaped movable plate 5 from the second movable groove 22, then the sealing gasket 18 expands along with the injected cooling liquid, the sealing gasket 18 is tightly pressed on the input end of the shell 2 and the connecting end of the connecting pipe 1 to realize sealing, the cooling liquid flows into the serpentine pipeline 17 from the first movable groove 20 in the right arc-shaped positioning plate 4, simultaneously tail gas enters the first through groove 16 from the connecting pipe 1, the heat of the tail gas is conducted to the shell 2 in a heat conduction mode, the cooling liquid can cool the shell 2 in the serpentine pipeline 17 to realize primary temperature control of the tail gas, the cooling liquid flows into the first movable groove 20 in the left arc-shaped positioning plate 4 from the serpentine pipeline 17 and flows into the third movable groove 19 on the left side, at the moment, the coolant absorbs heat in the shell 2 and has a certain temperature, so that the left sealing gasket 18 generates thermal expansion when entering the left movable groove III 19, the sealing gasket 18 is tightly pressed at the connecting end of the exhaust pipe 3 and the output end of the shell 2, sealing is realized, better sealing effect is achieved while temperature control is carried out, meanwhile, when the temperature of tail gas in the through groove I16 is still too high, the small motor in the shell 2 is controlled to drive the valve 13 to rotate, gas in the through groove I16 enters the through groove II 15 from the through groove IV 12, hot air conducts heat to the metal pipe 9 in the through groove II 15, the heat is conducted to the outer wall of the metal pipe 9 and the metal ring 10 through the heat-conducting silicone grease 11, heat dissipation and cooling are realized, then the gas is discharged into the through groove I16 from the through groove III 14, control over the temperature of the tail gas is realized, and the condition that the catalytic unit fails due to overhigh temperature of the tail gas is avoided.

While there have been shown and described the fundamental principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an automobile exhaust pipe sealing device based on aluminium oxide, includes connecting pipe (1), sealing mechanism and blast pipe (3), its characterized in that: the sealing mechanism comprises a shell (2) and sealing connecting mechanisms arranged on the left side and the right side of the shell (2), one ends, close to the shell (2), of a connecting pipe (1), an exhaust pipe (3) and the shell (2) are connected with the shell (2) through the sealing connecting mechanisms, a first through groove (16) is transversely formed in the shell (2), a metal pipe (9) used for heat dissipation is arranged on the outer wall of the shell (2), a second through groove (15) is formed in the metal pipe (9), a third through groove (14) and a fourth through groove (12) are longitudinally formed in the left side and the right side of the shell (2), the third through groove (14) and the fourth through groove (12) are communicated with the first through groove (16) and the second through groove (15), a valve (13) is arranged in the fourth through groove (12), a small motor is arranged in the shell (2), and an output shaft of the small motor penetrates through the fourth through groove (12) and is connected with one end of the valve (13), the other end of the valve (13) is connected with the inner wall of the through groove four (12) through a bearing.

2. The alumina-based exhaust pipe sealing device for an automobile according to claim 1, wherein: a plurality of metal rings (10) are sleeved on the outer wall of the metal pipe (9), and heat-conducting silicone grease (11) is filled between the outer wall of the metal pipe (9) and the second through groove (15).

3. The alumina-based exhaust pipe sealing device for an automobile according to claim 1, wherein: sealing connection mechanism includes arc locating plate (4), arc fly leaf (5), positioning bolt (8), fixing bolt (6), hinged joint is passed through with the one end of arc fly leaf (5) in arc locating plate (4), and the other end of arc locating plate (4) and arc fly leaf (5) all is equipped with connecting block (7), two connecting block (7) are connected through fixing bolt (6), positioning bolt (8) transversely run through arc locating plate (4) and spiro union on casing (2) lateral wall.

4. The exhaust pipe sealing device for an automobile based on alumina as set forth in claim 3, wherein: the arc locating plate (4), arc fly leaf (5) inner wall have seted up flutedly, and are equipped with sealed pad (18), left side in the recess arc locating plate (4) and arc fly leaf (5) in be equipped with the link of blast pipe (3) and the output of casing (2), and the link of blast pipe (3) is equipped with sealing ring (21) with the output junction of casing (2), sealed pad (18) cladding is at the outer wall of the link of blast pipe (3), the output of casing (2).

5. The exhaust pipe sealing device for an automobile based on alumina as set forth in claim 4, wherein: the right side be equipped with the link of connecting pipe (1) and the input of casing (2) in the recess in arc locating plate (4) and the arc fly leaf (5), and the link of connecting pipe (1) and the input junction of casing (2) also are equipped with sealing ring (21), the outer wall at the link of connecting pipe (1) and the input of casing (2) is wrapped in sealed pad (18).

6. The exhaust pipe sealing device for an automobile based on alumina according to any one of claims 4 or 5, wherein: set up activity groove one (20) in arc locating plate (4), and vertically seted up activity groove two (22) in arc fly leaf (5), activity groove three (19) have been seted up in sealed pad (18), be equipped with serpentine pipeline (17) in casing (2), and the both ends of serpentine pipeline (17) communicate with activity groove one (20) in controlling arc locating plate (4) respectively, activity groove three (19) and activity groove one (20), activity groove two (22) intercommunication.

7. The alumina-based exhaust pipe sealing device for an automobile according to any one of claim 6, wherein: and a connecting port (23) is arranged on the arc-shaped movable plate (5), and the connecting port (23) is communicated with the second movable groove (22).

8. The alumina-based exhaust pipe sealing device for an automobile according to claim 1, wherein: and a three-way catalyst is arranged in the exhaust pipe (3).