Flange sealing structure for automobile exhaust system

Abstract

The utility model provides a flange sealing structure for an automobile exhaust system, which belongs to the technical field of flanges and comprises an air inlet end flange, an air outlet end flange and a first sealing semi-ring. A first sealing semi-ring and a second sealing semi-ring are installed on the outer side of the air inlet end flange and the outer side of the air outlet end flange in a sliding mode, and anti-seepage pads are arranged on the inner side of the first sealing semi-ring and the inner side of the second sealing semi-ring. The air inlet end flange and the air outlet end flange are in butt joint, so that the butt joint rod and the butt joint hole are in butt joint installation, and the sliding blocks installed on the inner sides of the first sealing semi-ring and the second sealing semi-ring slide on the inner sides of the sliding grooves. The first sealing semi-ring and the second sealing semi-ring are installed on the outer side of the air inlet end flange and the outer side of the air outlet end flange, and the gap between the air inlet end flange and the air outlet end flange is sealed through the anti-seepage pad.

Description

TECHNICAL FIELD

[0001] The utility model relates to flange technical field, specifically, relate to a flange sealing structure for automobile exhaust system. BACKGROUND

[0002] Flange is also called flange flange or lug, flange is the part of mutual connection between shafts, is used for the connection between pipe ends, also has the flange on the inlet and outlet of equipment, is used for the connection between two equipment, such as speed reducer flange.

[0003] In the related art, in order to solve the higher requirement of the connection of flange pair to the flatness of sealing surface, the flatness of the whole sealing surface of flange pair is often treated, and the manufacturing cost is greatly improved, the market urgently needs the connection flange structure with good sealing property and low manufacturing cost, the patent with publication number CN217206632U provides a kind of flange sealing structure for automobile exhaust system, the flange sealing structure for automobile exhaust system, the middle part of sealing gasket is provided with the via hole matched with through hole, the upper and lower surfaces of sealing gasket are provided with annular protruding structure along the circumferential direction of via hole, the inlet flange, outlet flange are provided with annular sealing portion along the circumferential direction of through hole and annular protruding structure extrusion contact, the flange sealing structure is simple, and the processing cost is low, and the sealing property is good, avoid the air leakage during automobile exhaust, improve the aftertreatment capacity of automobile exhaust system.

[0004] The existing exhaust pipe connection sealing is poor, and there is air leakage phenomenon, and leakage is prone to occur in the process of use, and assembly is difficult, and installation efficiency is reduced, how to invent a kind of flange sealing structure for automobile exhaust system to improve these problems, becomes the problem that the technical personnel in this field urgently solves. Utility model content

[0005] In order to make up for the above shortcomings, the utility model provides a kind of flange sealing structure for automobile exhaust system, to improve the exhaust pipe connection sealing, there is air leakage phenomenon, and leakage is prone to occur in the process of use, and assembly is difficult, and installation efficiency problem is reduced.

[0006] The utility model is realized as follows:

[0007] The utility model provides a kind of flange sealing structure for automobile exhaust system, including air inlet end flange and air outlet end flange and first sealing half ring, the bottom of air inlet end flange is provided with air outlet end flange, the outside of air inlet end flange and air outlet end flange is slidably installed with first sealing half ring and second sealing half ring, the inside of first sealing half ring and second sealing half ring is provided with anti-seepage pad, the outside of second sealing half ring is fixedly installed with butt joint block, the outside of first sealing half ring is fixedly installed with limit sleeve, one end of butt joint block extends to the inside of limit sleeve and is fixedly limited, the top of air inlet end flange is fixedly installed with butt rod, the top of air outlet end flange is fixedly installed with extrusion sleeve, the top of air outlet end flange outside extrusion sleeve is limit installed with buffer pad by limit groove, the outside of extrusion sleeve is fixedly installed with limit block, the top of extrusion sleeve is limit installed with sealing pad.

[0008] Preferably, the air outlet flange is provided with a corresponding butt joint hole, and the bottom of the air inlet flange is provided with a corresponding butt joint groove.

[0009] By adopting the above technical scheme, the top of the extrusion sleeve can be butt jointed with the butt joint groove during installation between the air inlet flange and the air outlet flange, and the limit block outside the extrusion sleeve can be matched with the installation groove provided on the butt joint groove.

[0010] Preferably, the inside of the buffer pad is provided with a corresponding fixed groove, and the bottom of the air inlet flange is provided with a corresponding installation groove matched with the limit block.

[0011] By adopting the above technical scheme, the top of the extrusion sleeve can be butt jointed with the butt joint groove, and the limit block outside the extrusion sleeve can be matched with the installation groove provided on the butt joint groove, so that the butt joint process has good sealing performance.

[0012] Preferably, the buffer pad is provided with a corresponding through hole matched with the butt rod, the butt rod penetrates the inside of the through hole, and the sealing pad and the extrusion sleeve are limit installed through the clamping groove.

[0013] By adopting the above technical scheme, the fixed groove can be limited between the limit block, the buffer pad can be sealed conveniently, and the sealing pad can be sealed conveniently during the contact between the extrusion sleeve and the butt joint groove.

[0014] Preferably, the inside of the first sealing half ring and the second sealing half ring is provided with a sliding block, the air inlet flange and the air outlet flange are provided with a sliding groove matched with the sliding block, and the sliding groove and the sliding block are slidably installed.

[0015] By adopting the technical scheme, the butt joint rod and the butt joint hole are butt jointed and installed through butt joint between the air inlet end flange and the air outlet end flange, the first sealing half ring and the second sealing half ring are installed on the outside of the air inlet end flange and the air outlet end flange through the sliding of the sliding blocks installed on the inner side of the first sealing half ring and the second sealing half ring in the sliding grooves, and the butt joint block and the limiting sleeve are fixed through the fixed knobs.

[0016] Preferably, the butt joint block and the limiting sleeve are fixed through the fixed knobs, and the butt joint block is provided with the mounting hole corresponding to the fixed knob.

[0017] By adopting the technical scheme, the butt joint block and the limiting sleeve are fixed through the fixed knobs.

[0018] The utility model discloses the beneficial effect is:

[0019] By adopting the technical scheme, the butt joint rod and the butt joint hole are butt jointed and installed through butt joint between the air inlet end flange and the air outlet end flange, the first sealing half ring and the second sealing half ring are installed on the outside of the air inlet end flange and the air outlet end flange through the sliding of the sliding blocks installed on the inner side of the first sealing half ring and the second sealing half ring in the sliding grooves, and the butt joint block and the limiting sleeve are fixed through the fixed knobs. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced to the drawing needed to be used in the embodiment, and should understand, the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the range, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other related drawings according to these drawings.

[0021] Figure 1 It is the first appearance three-dimensional structure schematic view of the flange sealing structure structure for automobile exhaust system provided by the embodiment of the utility model;

[0022] Figure 2 It is the separation structure schematic view of the flange sealing structure for automobile exhaust system provided by the embodiment of the utility model;

[0023] Figure 3 is an explosion view schematic diagram of a flange sealing structure for an automobile exhaust system according to the embodiment of the present application;

[0024] Figure 4 is an internal structure schematic diagram of an air inlet end flange and an air outlet end flange of a flange sealing structure for an automobile exhaust system according to the embodiment of the present application;

[0025] Figure 5 is an installation structure schematic diagram of a sealing gasket and a clamping groove of a flange sealing structure for an automobile exhaust system according to the embodiment of the present application.

[0026] In the figure: 1, air inlet end flange; 101, air outlet end flange; 102, butt joint rod; 103, sliding groove; 104, butt joint hole; 105, extrusion sleeve; 106, limiting block; 107, limiting groove; 108, buffer pad; 109, fixing groove; 110, through hole; 111, butt joint groove; 112, installation groove; 113, sealing gasket; 114, clamping groove; 2, first sealing half ring; 201, second sealing half ring; 202, anti-seepage pad; 203, sliding block; 204, butt joint block; 205, installation hole; 206, limiting sleeve; 207, fixed knob. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] Embodiment, refer to Figures 1-5The utility model provides a flange sealing structure for automobile exhaust system, including air inlet end flange 1 and air outlet end flange 101 and first sealing half ring 2, the bottom of air inlet end flange 1 is provided with air outlet end flange 101, the outside of air inlet end flange 1 and air outlet end flange 101 is slidably installed with first sealing half ring 2 and second sealing half ring 201, the inside of first sealing half ring 2 and second sealing half ring 201 is provided with anti-seepage pad 202, the outside of second sealing half ring 201 is fixedly installed with butt joint block 204, the outside of first sealing half ring 2 is fixedly installed with limit sleeve 206, one end of butt joint block 204 extends to the inside of limit sleeve 206 and is fixedly limited, the top of air inlet end flange 1 is fixedly installed with butt joint rod 102, the top of air outlet end flange 101 is fixedly installed with extrusion sleeve 105, the top of air outlet end flange 101 outside extrusion sleeve 105 is limitedly installed with buffer pad 108 through limit groove 107, the outside of extrusion sleeve 105 is fixedly installed with limit block 106, the top of extrusion sleeve 105 is limitedly installed with sealing pad 113, air outlet end flange 101 is provided with butt joint hole 104 corresponding with butt joint rod 102, the bottom of air inlet end flange 1 is provided with butt joint groove 111 corresponding with extrusion sleeve 105.

[0029] Further, the inside of buffer pad 108 is provided with fixed slot 109 corresponding with limit block 106, the bottom of air inlet end flange 1 is provided with installation slot 112 matched with limit block 106, buffer pad 108 is provided with through hole 110 corresponding with butt joint rod 102, butt joint rod 102 penetrates the inside of through hole 110, sealing pad 113 and extrusion sleeve 105 are limitedly installed through clamping slot 114;

[0030] It should be noted that: through fixed slot 109 can be limited between limit block 106, through buffer pad 108 can conveniently seal, and through sealing pad 113 can conveniently seal in the process of contact between extrusion sleeve 105 and butt joint groove 111.

[0031] Reference Figures 3-4 Further, the inside of first sealing half ring 2 and second sealing half ring 201 is provided with sliding block 203, air inlet end flange 1 and air outlet end flange 101 are provided with sliding groove 103 matched with sliding block 203, sliding groove 103 and sliding block 203 are slidably installed, butt joint block 204 and limit sleeve 206 are limitedly fixed through fixed knob 207, butt joint block 204 is provided with installation hole 205 corresponding with fixed knob 207;

[0032] It should be noted that: through the butt joint between the inlet flange 1 and the outlet flange 101, the butt joint rod 102 is connected with the butt joint hole 104, the sliding block 203 installed in the inner side of the first sealing half ring 2 and the second sealing half ring 201 slides in the inner side of the sliding groove 103, the first sealing half ring 2 and the second sealing half ring 201 are installed on the outer side of the inlet flange 1 and the outlet flange 101, and the gap between the inlet flange 1 and the outlet flange 101 is sealed by the anti-seepage pad 202.

[0033] The working principle of the flange sealing structure for the automobile exhaust system is as follows: the butt joint rod 102 is connected with the butt joint hole 104 through the butt joint between the inlet flange 1 and the outlet flange 101, the sliding block 203 installed in the inner side of the first sealing half ring 2 and the second sealing half ring 201 slides in the inner side of the sliding groove 103, the first sealing half ring 2 and the second sealing half ring 201 are installed on the outer side of the inlet flange 1 and the outlet flange 101, the gap between the inlet flange 1 and the outlet flange 101 is sealed by the anti-seepage pad 202, the fixed knob 207 is matched with the installation hole 205, the butt joint block 204 is fixed between the limiting sleeve 206 through the fixed knob 207, the top of the extrusion sleeve 105 is connected with the butt joint groove 111 during the installation of the inlet flange 1 and the outlet flange 101, the limiting block 106 on the outer side of the extrusion sleeve 105 is matched with the installation groove 112 arranged on the butt joint groove 111, the sealing property is good during the butt joint, the buffer pad 108 is installed in the inner side of the limiting groove 107, the limiting block 106 is limited through the fixed groove 109, the buffer pad 108 is sealed conveniently, and the extrusion sleeve 105 and the butt joint groove 111 are sealed conveniently through the sealing pad 113.

[0034] It should be noted that the specific model and specifications of the motor are determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the art, so it will not be described in detail.

[0035] The preferred embodiments of the utility model have been described above, and are not used to limit the utility model. For those skilled in the art, the utility model can be changed and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. A flange sealing structure for an automobile exhaust system, comprising an intake end flange (1) and an exhaust end flange (101) and a first sealing half ring (2), characterized in that, The bottom of the air inlet end flange (1) is provided with an air outlet end flange (101), the outer side of the air inlet end flange (1) and the air outlet end flange (101) is slidably installed with a first sealing half ring (2) and a second sealing half ring (201), the inner side of the first sealing half ring (2) and the second sealing half ring (201) is provided with a seepage prevention pad (202), the outer side of the second sealing half ring (201) is fixedly installed with a butt block (204), the outer side of the first sealing half ring (2) is fixedly installed with a limiting sleeve (206), one end of the butt block (204) extends into the inside of the limiting sleeve (206) and is limitingly fixed, the top of the air inlet end flange (1) is fixedly installed with a butt rod (102), the top of the air outlet end flange (101) is fixedly installed with an extrusion sleeve (105), the top of the air outlet end flange (101) outside the extrusion sleeve (105) is limitingly installed with a buffer pad (108) through a limiting groove (107), the outer side of the extrusion sleeve (105) is fixedly installed with a limiting block (106), the top of the extrusion sleeve (105) is limitingly installed with a sealing pad (113).

2. The flange seal structure for an automobile exhaust system according to claim 1, wherein The air outlet end flange (101) is provided with a butt hole (104) corresponding to the butt rod (102), and the bottom of the air inlet end flange (1) is provided with a butt groove (111) corresponding to the extrusion sleeve (105).

3. The flange seal structure for an automotive exhaust system according to claim 1, wherein The inner side of the buffer pad (108) is provided with a fixed groove (109) corresponding to the limiting block (106), and the bottom of the air inlet end flange (1) is provided with a mounting groove (112) matched with the limiting block (106).

4. The flange seal structure for an automotive exhaust system according to claim 1, wherein The buffer pad (108) is provided with a through hole (110) corresponding to the butt rod (102), the butt rod (102) penetrates into the inside of the through hole (110), and the sealing pad (113) and the extrusion sleeve (105) are limitingly installed through a clamping groove (114).

5. The flange seal structure for an automotive exhaust system according to claim 1, wherein The inner side of the first sealing half ring (2) and the second sealing half ring (201) is provided with a sliding block (203), and the air inlet end flange (1) and the air outlet end flange (101) are provided with a sliding groove (103) matched with the sliding block (203), and the sliding groove (103) and the sliding block (203) are slidably installed.

6. The flange seal structure for an automotive exhaust system according to claim 1, wherein The butt block (204) and the limiting sleeve (206) are limitingly fixed through a fixed knob (207), and the butt block (204) is provided with a mounting hole (205) corresponding to the fixed knob (207).

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