CN211009876U

CN211009876U - Sealing gasket and exhaust brake valve sealing assembly

Info

Publication number: CN211009876U
Application number: CN201922158548.XU
Authority: CN
Inventors: 段昌生; 彭世庆; 袁凯
Original assignee: Sany Special Vehicle Co Ltd
Current assignee: Sany Special Vehicle Co Ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-07-14
Anticipated expiration: 2029-12-05

Abstract

The utility model provides a sealed pad and exhaust brake valve seal assembly, wherein, sealed pad includes: the sealing gasket body is annular, the sealing gasket body surrounds an exhaust hole, and a first sealing part and a second sealing part are respectively formed on two sides of the sealing gasket body; the bulges are annular and are arranged on the first sealing part and the second sealing part around the exhaust hole; the sealing gasket is made of metal materials, and the first sealing part and/or the second sealing part are/is conical surfaces. Through the technical scheme of the utility model, bellied deformation volume is bigger to compensate because the laminating deviation that causes such as the installation error of exhaust brake valve and flange, dismantlement maintenance messenger sealed face damage that causes, and form at least one and be cyclic annular and the sealed face of confined toper, improve sealed effect.

Description

Sealing gasket and exhaust brake valve sealing assembly

Technical Field

The utility model relates to a vehicle exhaust brake valve equipment technical field particularly, relates to a sealed pad and an exhaust brake valve seal assembly.

Background

The exhaust system of the fuel vehicle is generally composed of a plurality of exhaust pipes, flexible bellows, an exhaust brake valve, etc., which are generally connected by flanges to form a complete exhaust pipeline, for example, the exhaust brake valve and the flanges are sealed by forming an annular tapered sealing surface, but there may be installation errors between the tapered surface of the exhaust brake valve and the tapered surface of the flanges, or the annular tapered sealing surface formed between the exhaust brake valve and the flanges is not tight due to damage of the sealing surface caused by disassembly and maintenance of the exhaust brake valve and the flanges, which leads to gas leakage of the exhaust system, and high-temperature exhaust gas is more likely to ignite surrounding flammable components, causing fire.

SUMMERY OF THE UTILITY MODEL

The present invention aims at least solving one of the technical problems existing in the prior art or the related art.

In view of the above, an object of the present invention is to provide a gasket.

Another object of the utility model is to provide an exhaust brake valve seal assembly correspondingly.

In order to achieve at least one of the above objects, according to a first aspect of the present invention, a gasket is provided, including: the sealing gasket body is annular, the sealing gasket body surrounds an exhaust hole, and a first sealing part and a second sealing part are respectively formed on two sides of the sealing gasket body; the bulges are annular and are arranged on the first sealing part and the second sealing part around the exhaust hole; the sealing gasket is made of metal materials, and the first sealing part and/or the second sealing part are/is conical surfaces.

According to the utility model provides a sealing gasket, it is cyclic annular through the sealing gasket body, and the sealing gasket body encloses into the exhaust hole, when making sealing gasket be connected to exhaust system, waste gas can pass the exhaust hole and flow to the exhaust part of sealed pad opposite side from the exhaust part of sealed pad one side, and form first sealing and second sealing respectively through the both sides of sealed pad, in order to realize connecting and sealing between two different exhaust parts through first sealing and second sealing, for example, first sealing links to each other with the exhaust brake valve, make and form seal structure between first sealing and the exhaust brake valve, second sealing links to each other with the flange, make and form seal structure between second sealing and the flange, thereby seal exhaust brake valve and flange; furthermore, annular bulges are arranged on the first sealing part and the second sealing part around the exhaust hole, and the sealing gaskets are made of metal materials, so that when the sealing gaskets are connected to the exhaust brake valve and the flange, the exhaust brake valve and the flange apply pressure to the first sealing part and the second sealing part respectively to enable the sealing gaskets to deform, the first sealing part and the second sealing part of the sealing gaskets are respectively attached to the exhaust brake valve and the flange to form sealing surfaces to seal the exhaust brake valve and the flange, and the bulges arranged on the first sealing part and the second sealing part enable the contact surfaces of the bulges and the flange or the exhaust brake valve to bear larger pressure in unit area when the exhaust brake valve and the flange apply pressure to the sealing gaskets, and on one hand, the bulges can be attached to the exhaust brake valve and the flange more tightly; on the other hand, the deformation amount of the bulge is larger to make up the joint deviation caused by the reasons of installation error of the exhaust brake valve and the flange, damage caused by the disassembly and maintenance of the sealing surface and the like, and the bulge is annular, so that at least one annular and closed sealing surface is formed between the sealing gasket and the exhaust brake valve and between the sealing gasket and the flange, and the leakage of waste gas is prevented; wherein, first sealing or second sealing are the conical surface, perhaps first sealing and second sealing are the conical surface, so that produce the sealed face of great width between sealed pad and the exhaust brake valve and the flange, and the conical surface still has the effect of direction when the assembly, make the hookup location of exhaust brake valve and flange more accurate, thereby guarantee the exhaust brake valve, sealed pad, the connection axial centering of flange, make the sealed contact stress rational distribution of the sealed face that forms between sealed pad and the exhaust brake valve and the flange, and then make sealed pad and exhaust brake valve and flange between form evenly distributed's sealed face, improve sealed effect.

Wherein, at least one protrusion is arranged on each of the first sealing part and the second sealing part.

It should be noted that the gasket may be made of a metal material with good extensibility, including but not limited to aluminum, copper, iron, and silver. Wherein, the material of the sealing gasket can be red copper or soft aluminum and the like by comprehensively considering the ductility and the cost of the metal.

When the first sealing part and the second sealing part are both conical surfaces, the cone angle of the first sealing part and the cone angle of the second sealing part can be the same or different, and can be adjusted according to connecting pieces such as an exhaust brake valve, a flange and the like sealed by the sealing gasket.

In the above technical solution, the method further comprises: and each groove is arranged on the sealing gasket body corresponding to one bulge, one of the corresponding groove and the corresponding bulge is arranged on the first sealing part, and the other one of the corresponding groove and the corresponding bulge is arranged on the second sealing part.

In the above technical solution, by providing a groove corresponding to each protrusion, and the protrusion and the groove are respectively provided at two sides of the gasket body, specifically, when the protrusion is provided at the first sealing portion, the groove corresponding to the protrusion is provided at the second sealing portion, when the protrusion is provided at the second sealing portion, the groove corresponding to the protrusion is provided at the first sealing portion, when the gasket is assembled to the exhaust brake valve and the flange, an accommodation space is formed between the groove and the exhaust brake valve or between the groove and the flange, so that after the gasket is deformed under the action of pressure, at least a part of the metal material of the protrusion can move into the accommodation space formed by the groove, and the part of the protrusion protruding out of the gasket body is flush with the plane where the first sealing portion or the second sealing portion on the gasket body is located, thereby making the first sealing portion and the second sealing portion respectively form a sealing surface with a larger area with the exhaust brake valve and the flange, the sealing effect of the sealing gasket is improved.

In the above technical solution, the surface of each protrusion and the bottom surface of each groove are arc-shaped, and the corresponding arc radii of the surface of the protrusion and the bottom surface of the groove are equal.

In the technical scheme, the surfaces of the bulges and the bottom surfaces of the grooves are arc-shaped, so that the surfaces of the bulges and the bottom surfaces of the grooves are smoothly transited with the first sealing part or the second sealing part, and after the sealing gasket is deformed under pressure, the first sealing part and the second sealing part can form a relatively flat sealing surface so as to ensure good sealing property; the arc radiuses corresponding to the surfaces of the protrusions and the bottom surface of the groove are equal, so that the metal materials of the protrusions can be completely moved into an accommodating space formed between the groove and the exhaust brake valve or the flange when deformed, and the accommodating space is filled with the metal materials, therefore smooth sealing surfaces are formed on the first sealing portion and the second sealing portion, and the sealing effect of the sealing gasket is improved.

In the above technical solution, the protrusions protrude in a direction perpendicular to the first sealing portion or the second sealing portion, and a ratio of a height of each protrusion protruding the gasket body to a thickness of the gasket body is 0.3 to 0.5.

In the technical scheme, the bulges are bulged along the direction vertical to the first sealing part or the second sealing part, and the ratio of the height of each bulged sealing gasket body to the thickness of each sealing gasket body is 0.3-0.5, so that when the sealing gasket bears proper pressure, the bulges can generate sufficient deformation to form smooth sealing surfaces on two sides of the sealing gasket body, specifically, the exhaust brake valve and the flange provide pressure to the sealing gasket through the pretightening force applied by the connecting piece, and if the height of each bulged sealing gasket body is smaller than the thickness of each sealing gasket body, the joint deviation caused by the installation error of the exhaust brake valve and the flange, the damage of the sealing surfaces due to disassembly and maintenance and the like cannot be compensated; if the ratio of the height of the bulge protruding out of the sealing gasket body to the thickness of the sealing gasket body is too large, the pretightening force provided by the connecting piece cannot enable the bulge to generate enough deformation, so that a gap exists in a sealing surface formed between the sealing gasket and the exhaust brake valve or the flange, and the sealing effect is reduced, therefore, the ratio of the height of each bulge protruding out of the sealing gasket body to the thickness of the sealing gasket body is 0.3-0.5, the bulge can generate enough deformation on the basis of compensating for the joint deviation caused by the installation error of the exhaust brake valve and the flange, the damage caused by the disassembly and maintenance of the sealing surface and the like, and the sealing gasket respectively forms a smooth and tightly-jointed sealing surface with the exhaust brake valve and the flange, so that the good sealing effect is kept, and the leakage of waste gas is avoided.

In the above technical scheme, the sealing gasket body and the protrusion are integrally formed, and the protrusion and the groove are obtained through a stamping process.

In the technical scheme, the sealing gasket body and the protrusions are integrally formed, and the protrusions and the grooves are obtained through a stamping process, so that the production cost of the sealing gasket is reduced; on the other hand, the transition among the bulge, the groove and the sealing gasket body is smoother, and when the bulge deforms, smooth sealing surfaces are formed on the first sealing part and the second sealing part, so that the sealing effect of the sealing gasket is improved.

In the above technical scheme, the circle center of the protrusion coincides with the circle center of the exhaust hole.

In the technical scheme, the height of the bulge protruding the sealing gasket body is more uniform by the coincidence of the circle center of the bulge and the circle center of the exhaust hole, so that a smooth annular conical sealing surface is formed on the first sealing part and the second sealing part, and the sealing effect of the sealing gasket is improved.

In the above technical solution, the gasket body specifically includes: the sealing structure comprises a plurality of sub sealing gasket bodies, wherein a first sealing part and a second sealing part are respectively formed on two sides of each sub sealing gasket body, and the first sealing part of one sub sealing gasket body in any two adjacent sub sealing gasket bodies is connected with the second sealing part of the other sub sealing gasket body.

In the technical scheme, the first sealing part of one sub sealing gasket body in any two adjacent sub sealing gasket bodies is connected with the second sealing part of the other sub sealing gasket body in the plurality of sub sealing gasket bodies, so that the plurality of sub sealing gasket bodies are overlapped, the thickness of the sealing gasket body is increased, and the requirements for different thicknesses of the sealing gasket body are met.

The utility model discloses a second aspect technical scheme provides an exhaust brake valve seal assembly, include: one end of the exhaust brake valve is provided with an exhaust port, and a first connecting part is arranged around the exhaust port; the flange is connected with the exhaust brake valve, and a second connecting part is arranged at one end, close to the exhaust brake valve, of the flange; the sealing gasket in any one of the first aspect technical solutions is arranged between a first connecting part and a second connecting part, the first connecting part is connected with the first sealing part, and the second connecting part is connected with the second sealing part; the first connecting portion and the second connecting portion are conical surfaces, the cone angle of the first connecting portion is equal to that of the first sealing portion, the cone angle of the second connecting portion is equal to that of the second sealing portion, and the first sealing portion and the second sealing portion are respectively matched with the sealing exhaust brake valve and the flange.

According to the utility model provides an exhaust brake valve seal assembly, through being equipped with the gas vent in the one end of exhaust brake valve to make waste gas can discharge from the gas vent, be equipped with first connecting portion around the gas vent, the flange is close to the one end of exhaust brake valve and is equipped with the second connecting portion, and the sealed pad of any one of the first aspect technical scheme is located between first connecting portion and the second connecting portion, links to each other with first sealing portion through first connecting portion, and the second connecting portion links to each other with the second sealing portion, realizes the sealing connection between exhaust brake valve and the flange; wherein, first connecting portion and second connecting portion are the conical surface to can find the mounted position fast when doing benefit to the flange assembly to exhaust brake valve on, and improve the precision of assembly, furtherly, the cone angle of first connecting portion equals with the cone angle of first sealing, the cone angle of second connecting portion equals with the cone angle of second sealing, first sealing and second sealing respectively with sealed exhaust brake valve and flange looks adaptation, make sealed pad respectively with exhaust brake valve and flange between form and be annular toper sealed face, sealed effect is better.

In the above technical solution, the exhaust brake valve specifically includes: a valve body; the connecting seat is arranged on the valve body and is provided with at least one connecting hole; the flange is provided with a through hole corresponding to the connecting hole, and the connecting piece penetrates through the connecting hole and the through hole to realize the connection of the exhaust brake valve and the flange.

In the technical scheme, the connecting seat is arranged on the valve body, the connecting seat is provided with at least one connecting hole, the flange is provided with a through hole corresponding to the connecting hole, the connecting piece penetrates through the connecting hole and the through hole, the exhaust brake valve is connected with the flange, the exhaust brake valve and the flange provide pressure for the sealing gasket through the pretightening force of the connecting piece, and therefore the sealing gasket is deformed and forms a sealing surface with the exhaust brake valve and the flange respectively.

The connecting piece can be a bolt, the bolt penetrates through the connecting hole and the through hole, one end of the bolt, which extends out of the through hole, is locked by a nut, and pretightening force is provided for the exhaust brake valve and the flange through the matching of the nut and the bolt.

Wherein, can set up a plurality of connecting holes on the connecting seat, and correspond every connecting hole and be equipped with a through-hole on the flange, realize being connected of exhaust brake valve and flange through a plurality of connecting pieces.

In the above technical solution, the projection of the exhaust hole on the plane where the exhaust port is located in the exhaust port.

In this technical scheme, through the exhaust hole in the exhaust port is located in the projection on the plane of exhaust port place, the exhaust hole sets up with the exhaust port relatively promptly, and the diameter in exhaust hole is less than or equal to the diameter of exhaust port, makes waste gas follow the exhaust port and discharges the back, passes through from the exhaust hole.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

Fig. 1 shows a schematic structural view of a gasket according to an embodiment of the invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 2;

fig. 3 shows a schematic structural view of a gasket according to an embodiment of the invention;

FIG. 4 is a schematic cross-sectional view of the portion B-B of FIG. 3;

FIG. 5 illustrates a schematic structural view of an exhaust brake valve seal assembly according to an embodiment of the present invention;

fig. 6 shows a schematic structural view of a flange according to an embodiment of the invention;

fig. 7 shows a schematic cross-sectional structure of a gasket according to an embodiment of the invention;

fig. 8 shows a schematic cross-sectional structure of a gasket according to an embodiment of the invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 8 is:

10 gasket, 12 gasket body, 14 exhaust hole, 122 first sealing part, 124 second sealing part, 16 protrusion, 18 groove, 126 sub-gasket body, 20 exhaust brake valve, 22 valve body, 222 exhaust hole, 224 first connecting part, 24 connecting seat, 242 connecting hole, 30 flange, 32 second connecting part, 34 through hole and 40 connecting part.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings, which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Some embodiments according to the invention are described below with reference to fig. 1 to 8.

Example 1

As shown in fig. 1, 2 and 5, one embodiment of the present invention provides a gasket defining:

the gasket 10 includes: the exhaust brake valve comprises a gasket body 12 and a plurality of protrusions 16, wherein the gasket body 12 is annular, the gasket body 12 encloses an exhaust hole 14, exhaust gas can flow from an exhaust component on one side of the gasket 10 to an exhaust component on the other side of the gasket 10 through the exhaust hole 14, a first sealing portion 122 and a second sealing portion 124 are respectively formed on two sides of the gasket 10, the first sealing portion 122 and the second sealing portion 124 realize connection and sealing between two different exhaust components, for example, the first sealing portion 122 is connected with the exhaust brake valve 20, a sealing structure is formed between the first sealing portion 122 and the exhaust brake valve 20, the second sealing portion 124 is connected with a flange 30, a sealing structure is formed between the second sealing portion 124 and the flange 30, and thus the exhaust brake valve 20 is sealed with the flange 30.

Further, the protrusion 16 is disposed on the first sealing portion 122 and the second sealing portion 124, the gasket 10 is made of a metal material, when the gasket 10 is connected to the exhaust brake valve 20 and the flange 30, the exhaust brake valve 20 and the flange 30 respectively apply pressure to the first sealing portion 122 and the second sealing portion 124 of the gasket 10, the first sealing portion 122 and the second sealing portion 124 respectively abut against the exhaust brake valve 20 and the flange 30 after being deformed to form sealing surfaces, and the exhaust brake valve 20 is sealed with the flange 30, wherein the contact surface of the protrusion 16 with the flange 30 or the exhaust brake valve 20 is subjected to a greater pressure per unit area, so that the protrusion 16 can be in closer contact with the exhaust brake valve 20 and the flange 30; on the other hand, the amount of deformation of the protrusion 16 is made larger, and since the protrusion 16 is annular, at least one annular and closed sealing surface is formed between the gasket 10 and the exhaust brake valve 20 and the flange 30, thereby preventing leakage of exhaust gas.

Furthermore, the first sealing portion 122 or the second sealing portion 124 is a tapered surface, or both the first sealing portion 122 and the second sealing portion 124 are tapered surfaces, so that a larger sealing surface width is generated between the gasket 10 and the exhaust brake valve 20 and the flange 30, and the tapered surfaces also have a guiding function during assembly, so that the connection position of the exhaust brake valve 20 and the flange 30 is more accurate, and the sealing effect is improved.

Optionally, at least one protrusion 16 is provided on each of the first and

second sealing portions

122, 124.

Alternatively, the gasket 10 may be made of a metal material, including, but not limited to, aluminum, copper, iron, and silver.

Alternatively, the material of the gasket 10 is red copper or soft aluminum.

Example 2

As shown in fig. 2 and 5, in addition to the features of the above embodiment, further defined are:

the gasket 10 further includes: a plurality of grooves 18, one groove 18 is provided corresponding to each protrusion 16, and the protrusion 16 and the groove 18 are respectively provided at both sides of the gasket body 12, specifically, when the protrusion 16 is provided at the first sealing portion 122, the groove 18 corresponding to the protrusion 16 is provided at the second sealing portion 124, when the protrusion 16 is provided at the second sealing portion 124, the groove 18 corresponding to the protrusion 16 is provided at the first sealing portion 122, when the gasket 10 is assembled to the exhaust brake valve 20 and the flange 30, an accommodation space is formed between the groove 18 and the exhaust brake valve 20 or between the groove 18 and the flange 30, so that after the gasket 10 is deformed by pressure, at least a part of the metal material of the protrusion 16 can move into the accommodation space formed by the groove 18, and the portion of the protrusion 16 protruding out of the gasket body 12 is flush with the plane where the first sealing portion 122 or the second sealing portion 124 on the gasket body 12 is located, the first seal portion 122 and the second seal portion 124 form a large-area seal surface with the exhaust brake valve 20 and the flange 30, respectively, and the sealing effect of the gasket 10 is improved.

Example 3

As shown in fig. 2, 3 and 4, in addition to the features of any of the above embodiments, further defines:

the surface of each protrusion 16 and the bottom surface of each groove 18 are formed in a circular arc shape, so that after the gasket 10 is deformed under pressure, the first sealing portion 122 and the second sealing portion 124 can form a relatively flat sealing surface, thereby ensuring good sealing performance.

Further, the corresponding arc radii of the surface of the protrusion 16 and the bottom surface of the groove 18 are equal.

Example 4

As shown in fig. 4, in addition to the features of any of the embodiments described above, further defined are:

the protrusions 16 protrude in a direction perpendicular to the first sealing portion 122 or the second sealing portion 124, and a ratio of a height of each protrusion 16 protruding from the gasket body 12 to a thickness of the gasket body 12 is 0.3 to 0.5, so that when the gasket 10 is subjected to a proper pre-tightening force, the protrusions 16 can be deformed sufficiently to form smooth sealing surfaces on both sides of the gasket body 12.

As shown in fig. 8, the height of the protrusion 16 protruding the gasket body 12 is H1, and the thickness of the gasket body 12 is H2, so the value range of H1/H2 is 0.3-0.5.

Example 5

the gasket body 12 and the protrusions 16 are integrally formed, and the protrusions 16 and the grooves 18 are obtained through a stamping process, so that the production cost of the gasket 10 is reduced; on the other hand, the transition between the protrusion 16, the groove 18, and the gasket body 12 is made smoother, and after the deformation of the protrusion 16, a smooth sealing surface is formed in both the first sealing portion 122 and the second sealing portion 124, thereby improving the sealing effect of the gasket 10.

Example 6

As shown in fig. 1 and 3, in addition to the features of any of the above embodiments, further defined are:

the center of the bulge 16 coincides with the center of the exhaust hole 14, so that the bulge 16 protrudes out of the gasket body 12 to a more uniform height, and therefore, smooth annular tapered sealing surfaces are formed on the first sealing part 122 and the second sealing part 124, and the sealing effect of the gasket 10 is improved.

Example 7

As shown in fig. 7, in addition to the features of any of the embodiments described above, further defined are:

the gasket body 12 specifically includes: the plurality of sub gasket bodies 126, the first sealing portion 122 of one sub gasket body 126 of any two adjacent sub gasket bodies 126 is connected with the second sealing portion 124 of the other sub gasket body 126, so that the plurality of sub gasket bodies 126 are stacked, thereby increasing the thickness of the gasket body 12 to meet the requirements of different thicknesses of the gasket body 12.

Specifically, if the thickness of each sub gasket body 126 is 5mm, and the two sub gasket bodies 126 are connected, the thickness of the gasket body 12 is 10mm, thereby satisfying the requirements for different thicknesses of the gasket body 12, wherein the sub gasket bodies 126 are connected by spot welding.

Further, in the plurality of sub gasket bodies 126, different materials of the sub gasket bodies 126 may be the same metal, or different metal materials may be used.

Example 8

As shown in fig. 5 and 6, another embodiment of the present invention provides an exhaust brake valve 20 seal assembly defining:

the exhaust brake valve 20 seal assembly includes: the exhaust brake valve 20, the flange 30, and the gasket 10 of any of the above embodiments, wherein an exhaust port 222 is provided at one end of the exhaust brake valve 20 to allow exhaust gas to be exhausted from the exhaust port 222, a first connecting portion 224 is provided around the exhaust port 222, a second connecting portion 32 is provided at one end of the flange 30 close to the exhaust brake valve 20, the gasket 10 is provided between the first connecting portion 224 and the second connecting portion 32, the first connecting portion 224 is connected to the first sealing portion 122, and the second connecting portion 32 is connected to the second sealing portion 124 to achieve a sealed connection between the exhaust brake valve 20 and the flange 30.

Further, the first connection portion 224 and the second connection portion 32 are tapered surfaces, the taper angle of the first connection portion 224 is equal to the taper angle of the first sealing portion 122, the taper angle of the second connection portion 32 is equal to the taper angle of the second sealing portion 124, and the first sealing portion 122 and the second sealing portion 124 are respectively fitted to the exhaust brake valve 20 and the flange 30, so that annular tapered sealing surfaces are formed between the gasket 10 and the exhaust brake valve 20 and the flange 30, respectively, and the sealing effect is good.

Example 9

As shown in fig. 5 and 6, in addition to the features of any of the above embodiments, further defined are:

the exhaust brake valve 20 specifically includes: the exhaust brake valve comprises a valve body 22 and a connecting seat 24, wherein the connecting seat 24 is arranged on the valve body 22, four connecting holes 242 are formed in the connecting seat 24, a through hole 34 is formed in the flange 30 corresponding to each connecting hole 242, a bolt penetrates through the connecting holes 242 and the through holes 34, one end, extending out of the through holes 34, of the bolt is locked through a nut, and pre-tightening force is provided for the exhaust brake valve 20 and the flange 30 through the matching of the nut and the bolt.

Example 10

In addition to the features of any of the embodiments described above, further defined are:

the projection of the exhaust hole 14 on the plane of the exhaust port 222 is located in the exhaust port 222, that is, the exhaust hole 14 is arranged opposite to the exhaust port 222, and the diameter of the exhaust hole 14 is smaller than or equal to the diameter of the exhaust port 222, so that the exhaust gas passes through the exhaust hole 14 after being exhausted from the exhaust port 222.

Example 11

A particular embodiment of the utility model provides a seal gasket, has injectd:

the sealing gasket (i.e., gasket 10) includes: the sealing gasket comprises a sealing gasket body 12, an exhaust hole 14 and a protrusion 16, wherein the exhaust hole 14 is located in the center of the sealing gasket body 12, the protrusion 16 is annular, the cross section of the protrusion 16 is arc-shaped, two sides of the sealing gasket body 12 are conical surfaces, and the protrusion 16 is arranged on two sides of the conical surface of the sealing gasket body 12.

Specifically, in the installation process of the exhaust brake valve 20, the sealing gasket body 12 is placed between the conical surface of the exhaust brake valve 20 and the conical surface of the exhaust pipe flange (i.e., the flange 30), the connecting piece 40 is screwed down to generate an axial force, so that the conical sealing gasket is tightly installed between the conical surface of the exhaust brake valve 20 and the conical surface of the exhaust pipe flange 30, the annular protrusion 16 on the surface of the conical sealing gasket body 12 is pressed under the action of a pressing force to generate elastic deformation, and the deformation is used for compensating the joint deviation between the conical surface of the exhaust brake valve 20 and the conical surface of the exhaust pipe flange to realize sealing.

Further, the cone angle of the gasket body 12 is consistent with the brake valve cone angle for the desired seal.

Furthermore, the diameter of the small end of the conical surface of the conical sealing gasket is not larger than the diameter of the small end of the corresponding conical surface of the exhaust brake valve 20.

Furthermore, the sealing gasket is made of single-layer metal, and soft metal materials such as soft aluminum, red copper and the like can be selected.

Furthermore, one or more bulges 16 are arranged on both sides of the sealing gasket, and the other side corresponding to the bulges 16 is an arc-shaped groove 18.

Further, the protrusion 16 protrudes from the gasket body 12 by a height of about 1/3 a of the gasket thickness.

Optionally, the gasket is a multilayer metal, i.e. a plurality of sub-gaskets are connected to form a gasket.

According to the utility model provides a sealed pad, bellied deformation volume is bigger to compensate because the installation error of the conical surface of exhaust brake valve and the conical surface of flange and dismantle the maintenance and make the reason such as damage that sealed face caused cause the laminating deviation, and form at least one and be cyclic annular and confined toper seal face, improve sealed effect.

In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", 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 simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A gasket, comprising:

the sealing gasket comprises a sealing gasket body, wherein the sealing gasket body is annular, the sealing gasket body surrounds an exhaust hole, and a first sealing part and a second sealing part are respectively formed on two sides of the sealing gasket body;

the bulges are annular and are arranged on the first sealing part and the second sealing part around the exhaust hole;

the sealing gasket is made of a metal material, and the first sealing part and/or the second sealing part are/is a conical surface.

2. The gasket of claim 1, further comprising:

each groove corresponds to one bulge and is arranged on the sealing gasket body, one of the corresponding groove and the corresponding bulge is arranged on the first sealing part, and the other one of the corresponding groove and the corresponding bulge is arranged on the second sealing part.

3. A gasket according to claim 2,

the surface of each protrusion and the bottom surface of each groove are arc-shaped, and the arc radiuses corresponding to the surfaces of the protrusions and the bottom surfaces of the grooves are equal.

4. A gasket according to claim 3,

the bulges are protruded along the direction vertical to the first sealing part or the second sealing part, and the ratio of the height of each bulge protruded out of the sealing gasket body to the thickness of the sealing gasket body is 0.3-0.5.

5. A gasket according to claim 2,

the sealing gasket body and the bulge are integrally formed, and the bulge and the groove are obtained through a stamping process.

6. A gasket according to claim 1,

the circle center of the bulge is coincided with the circle center of the exhaust hole.

7. Gasket according to any one of claims 1 to 6, characterized in that said gasket body comprises in particular:

the sealing structure comprises a plurality of sub sealing gasket bodies, wherein the first sealing part and the second sealing part are respectively formed on two sides of each sub sealing gasket body, and the first sealing part of one sub sealing gasket body in any two adjacent sub sealing gasket bodies is connected with the second sealing part of the other sub sealing gasket body.

8. An exhaust brake valve seal assembly, comprising:

the exhaust brake valve is provided with an exhaust port at one end and a first connecting part surrounding the exhaust port;

the flange is connected with the exhaust brake valve, and a second connecting part is arranged at one end, close to the exhaust brake valve, of the flange;

the gasket according to any one of claims 1 to 7, provided between the first connecting portion and the second connecting portion, the first connecting portion being connected to the first sealing portion, the second connecting portion being connected to the second sealing portion;

the first connecting portion and the second connecting portion are conical surfaces, the cone angle of the first connecting portion is equal to the cone angle of the first sealing portion, the cone angle of the second connecting portion is equal to the cone angle of the second sealing portion, and the first sealing portion and the second sealing portion are respectively matched with the sealed exhaust brake valve and the flange.

9. The exhaust brake valve seal assembly of claim 8, wherein the exhaust brake valve specifically comprises:

a valve body;

the connecting seat is arranged on the valve body and is provided with at least one connecting hole;

the flange is provided with a through hole corresponding to the connecting hole, and the connecting piece penetrates through the connecting hole and the through hole to realize the connection of the exhaust brake valve and the flange.

10. The exhaust brake valve seal assembly of claim 8,

the projection of the exhaust hole on the plane of the exhaust port is positioned in the exhaust port.