CN219493037U

CN219493037U - Electromagnetic valve sealing piece for automobile carbon tank

Info

Publication number: CN219493037U
Application number: CN202223081422.5U
Authority: CN
Inventors: 何海军; 黄荣波; 叶寅; 崔璨
Original assignee: Anhui Xijia Precision Technology Co ltd
Current assignee: Anhui Xijia Precision Technology Co ltd
Priority date: 2022-11-21
Filing date: 2022-11-21
Publication date: 2023-08-08
Anticipated expiration: 2032-11-21

Abstract

The utility model relates to the technical field of carbon tank electromagnetic valves and discloses an automobile carbon tank electromagnetic valve sealing piece, wherein a plurality of groups of compression buckles which are equal to the notch at the upper part of a tightening cavity are circumferentially distributed above a pressure-bearing annular plate, and an expansion ring which is equal to an expansion inclined plane hoop is arranged right below the ring sleeve of a pressure-bearing gasket and inside the notch of the tightening cavity. The utility model discloses replaced the tradition and utilized single packing ring bottom carbon tank gas port to seal the form, through lay tightening ring in sealed pad cavity inside, under the gland of pressure bearing pad, when the sealing member received ambient pressure, the expansion ring of pressure bearing pad bottom was pressed tightly and is detained inwards shrink under the pressure effect, the annular is pressed to the compression to interior sealing ring, improve the sealing and sticiss the performance of interior sealing ring and carbon tank gas port, on the other hand can promote the outside expansion of outer sealing ring of sealing pad, improve the sealing and sticiss the performance of outer sealing ring and carbon tank gas port outward.

Description

Electromagnetic valve sealing piece for automobile carbon tank

Technical Field

The utility model relates to the technical field of carbon tank electromagnetic valves, in particular to an automobile carbon tank electromagnetic valve sealing piece.

Background

The carbon tank electromagnetic valve is a device which is arranged on an automobile or a motorcycle and used for reducing air pollution caused by fuel evaporation and emission and simultaneously increasing fuel efficiency, and has the functions that: the inside petrol vapor of filtration oil tank is adsorbed, let the fuel vapor get into the engine through solenoid valve control and participate in the burning, thereby reach the effect that reduces the oil consumption, prevent that the oil tank atmospheric pressure is too high, car carbon tank solenoid valve is bad not only can increase the oil consumption, still can influence car engine's normal operating, the sealing member of carbon tank solenoid valve port is regarded as to the sealing member, whether the carbon tank solenoid valve can normally operate of its quality is concerned, when the sealing member appears damaging or ageing, petrol vapor can be exposed from the carbon tank atmospheric port, the condition that the fuelling is weak, the pause, the idle unstable appears, consequently the sealing member is the vital seal structure of carbon tank solenoid valve.

However, most of the existing sealing elements for the carbon tank electromagnetic valve are in the form of a single rubber gasket, and are extremely easy to age and deform due to the high temperature and high pressure in the installation and use process, so that the sealing performance of the carbon tank air port is reduced, and compared with the conditions of oil leakage and gasoline steam leakage.

Disclosure of Invention

The utility model aims to provide an automobile carbon tank electromagnetic valve sealing member, which solves the problems that the sealing performance of a carbon tank air port is reduced and oil leakage and gasoline steam leakage occur relatively due to the aging and deformation easily caused by the high temperature and high pressure in the installation and use process of the sealing member for the carbon tank electromagnetic valve in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: an electromagnetic valve sealing piece of an automobile carbon tank comprises a sealing gasket, a pressure bearing gasket and a tightening hoop;

the sealing gasket comprises an outer sealing ring and an inner sealing ring, and a tightening cavity for placing a tightening hoop is formed between the outer sealing ring and the inner sealing ring;

the tightening hoop comprises a pressure-bearing annular plate arranged at the bottom of the tightening cavity chamber, a plurality of groups of tightening buckles which are equal to the notch at the upper part of the tightening cavity are circumferentially distributed above the pressure-bearing annular plate, the outer wall of each tightening buckle is an expanding inclined plane, and the inner wall of each tightening buckle is a tightening vertical plane which is attached to the inner sealing ring;

the pressure-bearing gasket comprises a pressure-bearing gasket which is pressed above the notch of the tightening cavity and has the same size as the sealing gasket ring sleeve, and an expansion ring which is used for expanding the inclined plane hoops is arranged right below the ring sleeve of the pressure-bearing gasket and inside the notch of the tightening cavity.

As still further aspects of the utility model: the sealing gasket and the pressure bearing gasket are made of silicon rubber materials, and epoxy resin glue is smeared on sealing butt joint ports of the sealing gasket and the pressure bearing gasket.

As still further aspects of the utility model: the tightening hoop is made of spring steel materials.

As still further aspects of the utility model: the tightening press buckles are annularly and symmetrically arranged relative to the axis of the pressure-bearing annular plate.

As still further aspects of the utility model: the opposite included angle between the expanding inclined plane and the tightening vertical plane is 15 degrees.

As still further aspects of the utility model: the expansion ring is of a circular ring structure, and the inner annular wall and the outer annular wall of the expansion ring are respectively attached to the expansion inclined plane and the outer sealing ring.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model discloses replaced the tradition and utilized single packing ring bottom carbon tank gas port to seal the form, through lay tightening the hoop in sealed pad cavity inside, under the gland of pressure bearing pad, when the sealing member received ambient pressure, the expansion ring of pressure bearing pad bottom was pressed tightly and is detained inwards shrink under the pressure effect, on the one hand, press the receipts of tightening the hoop, carry out annular to the extrusion to interior sealing ring, improve the sealing and sticiss the performance of interior sealing ring and the interior gas port of carbon tank, on the other hand can promote the outside expansion of the outer sealing ring of sealing pad, improve the sealing and sticiss the performance of outer sealing ring and the outer gas port of carbon tank, improve the inside and outside leakproofness of sealing member then.

2. According to the utility model, the tightening hoops are arranged in the tightening cavity, so that the tightening hoops can be used as supporting ribs of the sealing element, irregular extrusion deformation of the sealing element under strong external pressure is avoided, and the combination of the tightening cavity and the steel tightening hoops is utilized, so that the tightening hoops have good heat conductivity, and mechanical heat received by the sealing element can be rapidly conducted and radiated.

Drawings

FIG. 1 is a schematic structural view of an automotive carbon canister solenoid valve seal;

FIG. 2 is a first deployment schematic view of an automotive carbon canister solenoid valve seal;

FIG. 3 is a second deployment schematic of an automotive carbon canister solenoid valve seal;

FIG. 4 is a schematic illustration of the structure of a gasket in an automotive carbon canister solenoid valve seal;

FIG. 5 is a schematic illustration of the structure of a pressure pad in an automotive carbon canister solenoid valve seal;

FIG. 6 is a schematic view of a tightening ring in an automotive carbon canister solenoid valve seal.

In the figure: 1. a sealing gasket; 11. an outer seal ring; 12. an inner seal ring; 13. a tightening chamber; 2. a pressure bearing pad; 21. a pressure-bearing gasket; 22. an expansion ring; 3. tightening the hoop; 31. a pressure-bearing annular plate; 32. compressing the press button; 33. expanding the inclined plane; 34. and tightening the vertical surface.

Detailed Description

Referring to fig. 1 to 6, in the embodiment of the utility model, an electromagnetic valve sealing member for an automobile carbon tank comprises a sealing gasket 1, a pressure bearing gasket 2 and a tightening hoop 3, wherein the sealing gasket 1 and the pressure bearing gasket 2 are made of silicon rubber materials, epoxy resin glue is smeared on sealing butt joint ports of the sealing gasket 1 and the pressure bearing gasket 2, and in the production process of the electromagnetic valve sealing member for the carbon tank, after the tightening hoop 3 is placed in a tightening cavity 13 of the sealing gasket 1, the sealing gasket 1 and the pressure bearing gasket 2 are mutually butt jointed and sealed by using the adhesion of the epoxy resin glue, and the sealing gasket 1 and the pressure bearing gasket 2 made of the silicon rubber materials have good high temperature resistance, ageing resistance and compression resistance and can resist high temperature and high pressure from the outside.

The sealing gasket 1 comprises an outer sealing ring 11 and an inner sealing ring 12, and a tightening cavity 13 for placing the tightening hoop 3 is formed between the outer sealing ring 11 and the inner sealing ring 12;

the tightening hoop 3 comprises a pressure-bearing annular plate 31 arranged at the bottom of a chamber of the tightening cavity 13, a plurality of groups of tightening buckles 32 which are equal to the notch at the upper part of the tightening cavity 13 are circumferentially distributed above the pressure-bearing annular plate 31, the outer wall of each tightening buckle 32 is a spreading inclined surface 33, the inner wall of each tightening buckle 32 is a tightening vertical surface 34 which is attached to the inner sealing ring 12, the tightening hoop 3 is made of spring steel members, the plurality of groups of tightening buckles 32 are annularly symmetrically arranged relative to the axis of the pressure-bearing annular plate 31, in the production process of the electromagnetic valve sealing member of the carbon tank, the tightening hoop 3 made of spring steel has good tightening reset performance, the tightening of the inner sealing ring 12 on the sealing gasket 1 by utilizing the plurality of groups of tightening buckles 32 which are annularly symmetrically arranged can improve the tightening performance of the inner sealing ring 12 and the inner air port of the carbon tank, simultaneously play a role in skid resistance, the situation that the sealing member falls off and is polluted by dust is avoided when being installed, on the other hand, the tightening hoop 3 is made of good compression supporting ribs which can be used as the sealing member, the sealing member is prevented from irregularly pressing and deforming under the outside pressure, and simultaneously, and the sealing member can be quickly subjected to heat conduction and mechanical heat conduction by the combination of the tightening hoop 13 and the good heat conduction performance can be realized.

The pressure bearing pad 2 comprises a pressure bearing gasket 21 which is pressed above a notch of the tightening cavity 13 and has the same size as the annular sleeve of the sealing pad 1, an expansion ring 22 which is hooped with the expansion inclined surface 33 is arranged right below the snare of the pressure bearing gasket 21 in the notch of the tightening cavity 13, the opposite included angle between the expansion inclined surface 33 and the tightening vertical surface 34 is 15 degrees, the expansion ring 22 is of a circular structure, the inner annular wall and the outer annular wall of the expansion ring 22 are respectively attached to the expansion inclined surface 33 and the outer annular wall 11, and when the sealing member is subjected to external pressure in the installation and use process of the electromagnetic valve sealing member of the carbon tank, the expansion ring 22 at the bottom of the pressure bearing pad 2 presses the tightening buckle 32 of the tightening hoop 3 to keep inward shrinkage trend under the pressure, so that the tightening vertical surface 34 of the inner wall of the sealing ring 12 performs annular opposite compression extrusion on the inner annular sealing ring 12, the sealing performance of the inner sealing ring 12 and the carbon tank is improved, and the outer annular wall 11 of the sealing pad 1 is pushed to keep outward expansion trend, the sealing performance of the outer sealing ring 11 and the outer sealing port of the carbon tank is improved, and the inner sealing performance and the inner sealing port and the outer sealing port of the sealing member are further improved.

The working principle of the utility model is as follows: in the production process of the electromagnetic valve sealing piece of the carbon tank, after the tightening hoop 3 is placed in the tightening cavity 13 of the sealing gasket 1, the sealing gasket 1 and the pressure bearing gasket 2 are mutually combined and sealed by utilizing the adhesion of epoxy resin glue, so that the sealing gasket 1, the pressure bearing gasket 2 and the tightening hoop 3 are kept in an integrated form, the hoops are arranged at the gas port end of the carbon tank, and in the use process of the sealing piece, the sealing gasket 1 and the pressure bearing gasket 2 which are made of silicone rubber have good high temperature resistance, ageing resistance and compression resistance, can resist high temperature and high pressure from the outside, and the tightening hoop 3 which is made of spring steel has good tightening and resetting performance, and the tightening of the inner sealing ring 12 on the sealing gasket 1 by utilizing a plurality of groups of tightening buckles 32 which are symmetrically arranged in an annular shape can improve the tightening performance of the inner sealing ring 12 and the gas port in the carbon tank, simultaneously can play skid-proof effect, avoid the condition that the sealing member appears droing when the installation, on the other hand has good compressive support performance, can regard as the supporting rib of sealing member, avoid the sealing member to appear irregular extrusion deformation under external powerful pressure, further when the sealing member receives external pressure, the receipts of pressure pad 2 bottom expansion circle 22 is under the effect of pressure, on the one hand, the receipts of pressing tightening up hoop 3 are pressed and are detained 32 and keep inwards shrink trend, make the tight facade 34 of its inner wall carry out annular counter-pressure formula extrusion to interior sealing ring 12, improve the sealed sticis performance of interior sealing ring 12 and the interior gas port of carbon tank, on the other hand promote the outside sealing ring 11 of sealing pad 1 and keep outwards expanding the trend, improve the sealed sticis performance of outer sealing ring 11 and the outer gas port of carbon tank, then improve the inside and outside leakproofness of sealing member.

The foregoing description is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical solution of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The electromagnetic valve sealing piece of the automobile carbon tank is characterized by comprising a sealing gasket (1), a pressure bearing gasket (2) and a tightening hoop (3);

the sealing gasket (1) comprises an outer sealing ring (11) and an inner sealing ring (12), and a tightening cavity (13) for placing the tightening hoop (3) is formed between the outer sealing ring (11) and the inner sealing ring (12);

the tightening hoop (3) comprises a pressure-bearing annular plate (31) arranged at the bottom of a chamber of the tightening chamber (13), a plurality of groups of tightening buckles (32) which are equal to the notch at the upper part of the tightening chamber (13) are circumferentially distributed above the pressure-bearing annular plate (31), the outer wall of each tightening buckle (32) is an expanding inclined plane (33), and the inner wall of each tightening buckle (32) is a tightening vertical plane (34) attached to the inner sealing ring (12);

the pressure-bearing gasket (2) comprises a pressure-bearing gasket (21) which is pressed above the notch of the tightening cavity (13) and has the same size as the ring sleeve of the sealing gasket (1), and an expansion ring (22) which is hooped with the expansion inclined plane (33) is arranged right inside the notch of the tightening cavity (13) below the ring sleeve of the pressure-bearing gasket (21).

2. The electromagnetic valve sealing member for the automobile carbon tank according to claim 1, wherein the sealing gasket (1) and the pressure bearing gasket (2) are made of silicon rubber materials, and epoxy resin glue is smeared on sealing butt joint ports of the sealing gasket (1) and the pressure bearing gasket (2).

3. An automotive carbon canister solenoid valve seal according to claim 1, characterised in that the tightening hoop (3) is of spring steel material.

4. An automotive carbon canister solenoid valve seal according to claim 1, characterized in that a plurality of sets of said tightening press buttons (32) are arranged in annular symmetry with respect to the axis of the pressure-bearing annular plate (31).

5. An automotive carbon canister solenoid valve seal according to claim 1, characterised in that the angle subtended between the expanding ramp (33) and the tightening facade (34) is 15 °.

6. The electromagnetic valve sealing member for the automobile carbon tank according to claim 1, wherein the expansion ring (22) has a circular ring-shaped structure, and the inner and outer annular walls of the expansion ring (22) are respectively attached to the expansion inclined surface (33) and the outer sealing ring (11).