CN212251114U

CN212251114U - Special sealing gasket and gas transmission device comprising same

Info

Publication number: CN212251114U
Application number: CN202020836473.6U
Authority: CN
Inventors: 高辉
Original assignee: Wuhan Jieforster Electronic Technology Engineering Co ltd
Current assignee: Wuhan Jieforster Electronic Technology Engineering Co ltd
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2020-12-29
Anticipated expiration: 2030-05-18

Abstract

The utility model discloses a special seal gasket and contain its gas transmission device belongs to the sealing member field, and it is through setting up the bowl shape gasket of being made by the PTFE material to set up the gasket into the continuous arc structure of evagination all the time, can effectively realize that the matching between bottle valve interface and the attach fitting is sealed. The utility model provides a special seal gasket, its simple structure, it is sealed effectual, can effectively use on the steel bottle interface, realize the reliable of bottle valve and attach fitting sealed, promote reliability and security in the steel bottle application, have better spreading value and application prospect.

Description

Special sealing gasket and gas transmission device comprising same

Technical Field

The utility model belongs to the sealing member field, concretely relates to special seal gasket and contain its gas transmission device.

Background

In the fields of gas storage and gas delivery, the application of steel cylinders is very wide. Usually, a special cylinder valve is arranged at the opening of the steel cylinder for controlling and adjusting the gas transmission amount. Accordingly, a connection joint is often provided corresponding to the cylinder valve for realizing corresponding communication between the cylinder valve and the gas transmission pipeline.

At present, in order to ensure reliable sealing between a cylinder valve joint and a connecting joint, a hemispherical inner port is arranged on a cylinder valve joint which is applied more, for example, a CGA580 interface or a G-5/8 interface which is applied more; correspondingly, the connecting end part of the connecting joint is provided with a hemispherical outer joint. Through the corresponding matching of the inner interface and the outer joint, the corresponding connection of the cylinder valve and the connecting joint can be realized, and the gas conveying in the steel cylinder is realized.

Furthermore, the existing cylinder valve and the connecting joint are hard sealed by adopting a plane sealing mode, namely a plane gasket in a sheet shape is arranged between the cylinder valve interface and the connecting joint. Although above-mentioned sealed form can satisfy the application demand of steel bottle gas transmission to a certain extent, along with the continuous use of plane gasket, its muzzle that often can appear hard face wearing and tearing in the use leads to its sealed effect relatively poor, can't effectively realize high pressure pressurize, influences gaseous storage and transport, can bring the hidden danger even to operating personnel's operation safety, influences the normal use of steel bottle.

SUMMERY OF THE UTILITY MODEL

To the above defect of prior art or improve in the demand one or more, the utility model provides a special seal gasket and contain its gas transmission device, it is through setting up the special seal gasket of bowl shape of being made by the PTFE material between the bottle valve of steel bottle and attach fitting, can effectively promote the connection leakproofness between bottle valve interface and the attach fitting, guarantees reliability and the security of steel bottle gas transmission.

In order to achieve the above object, one aspect of the present invention provides a special sealing gasket for sealing a steel cylinder interface;

the sealing gasket is made of PTFE material and is in a bowl-shaped structure with openings at two ends; the peripheral wall surface of the sealing gasket is of an arc structure which continuously extends from one end of the sealing gasket to the other end of the sealing gasket, and the arc structure protrudes outwards from one side close to the central axis of the sealing gasket.

As a further improvement of the utility model, the thickness of the sealing gasket is constant.

As a further improvement of the present invention, the thickness of the sealing gasket is continuously increased from one axial side to the other axial side.

As a further improvement of the utility model, the thickness of the sealing gasket is 0.5-3 mm.

As a further improvement, the opening internal diameter at the axial both ends of the sealing gasket is respectively 8 ~ 15mm and 12 ~ 25mm, and the internal diameter ratio of big internal diameter one side and little internal diameter one side is in between 1.25 ~ 3.

As a further improvement, the coaxial bottom ring that is provided with in the less one side of seal gasket internal diameter, the bottom ring with seal gasket integrated into one piece, and seal gasket's tip is formed with ring platform structure.

As a further improvement of the utility model, the bottom ring is protruded the radial width of the inner peripheral wall surface of the sealing gasket is 0.5-5 mm.

In another aspect of the present invention, a gas delivery device is provided, which comprises the above-mentioned special sealing gasket, in addition to,

the device also comprises a steel cylinder, a cylinder valve and a connecting joint;

the cylinder valve is correspondingly connected with the opening end of the steel cylinder, the cylinder valve interface of the cylinder valve is correspondingly connected with the connecting joint, and the sealing gasket is arranged between the cylinder valve interface and the connecting joint.

As a further improvement of the utility model, correspond the attach fitting still is provided with the gas-supply pipe joint of joinable gas-supply pipe, the gas-supply pipe attach fitting is in the attach fitting deviates from the one end of bottle valve.

As a further improvement of the utility model, the interface of the cylinder valve is a CGA580 interface or a G-5/8 interface.

The above-described improved technical features may be combined with each other as long as they do not conflict with each other.

Generally, through the utility model discloses above technical scheme who conceives compares with prior art, has following beneficial effect:

(1) the special sealing gasket of the utility model is provided with the bowl-shaped gasket made of PTFE material, and the gasket is provided with the continuous arc structure which is always convex outwards, thereby effectively realizing the matching arrangement between the bottle valve interface and the connecting joint, improving the sealing performance of the connection between the bottle valve interface and the connecting joint, and realizing the deformation of the sealing gasket at the connection part to a certain extent by utilizing the characteristics of certain rigidity and deformability of the PTFE material, and further improving the sealing effect;

(2) the special sealing gasket of the utility model has the advantages that the thickness, the inner diameter ratio and the length of the sealing gasket are preferably set, so that the sealing gasket is more accurately matched between the cylinder valve interface and the connecting joint, and the sealing reliability of the gas transmission port of the steel cylinder is indirectly improved;

(3) the special sealing gasket of the utility model is provided with the bottom ring at the end with smaller inner diameter of the sealing gasket, so that the sealing gasket can realize the plane sealing while realizing the peripheral sealing, further improve the sealing effect of the sealing gasket and ensure the stability and the safety of the application of the steel cylinder;

(4) the utility model provides a special seal gasket, its simple structure, it is sealed effectual, can effectively use on the steel bottle interface, realize the reliable of bottle valve and attach fitting sealed, promote reliability and security in the steel bottle application, have better spreading value and application prospect.

Drawings

FIG. 1 is a schematic diagram showing the matching of a special sealing gasket with a steel cylinder, a connecting joint, a cylinder valve and other parts in the embodiment of the present invention;

FIG. 2 is a schematic perspective view of a special sealing gasket in an embodiment of the present invention;

FIG. 3 is a structural sectional view of a special sealing gasket according to an embodiment of the present invention;

FIG. 4 is a top view of a special sealing gasket according to an embodiment of the present invention;

FIG. 5 is a structural sectional view of a special sealing gasket according to a second embodiment of the present invention;

in all the figures, the same reference numerals denote the same features, in particular: 1. a sealing gasket, 101, a bowl-shaped body, 102, a bottom ring; 2. the cylinder valve, 3, the steel cylinder, 4, the connecting joint and 5, the gas transmission pipe joint.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. 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 present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Example (b):

in a preferred embodiment, the special sealing gasket of the present invention is shown in fig. 2 to 4. Wherein, seal gasket 1 is whole to be the bowl-shaped structure or the toper structure of axial both ends open-ended, and its wall thickness is invariable, and the periphery wall personally submits outside convex arc, and seal gasket 1's inside is formed with hemisphere cavity or toper cavity promptly, and both ends open-ended internal diameter is different. Then the sealing gasket 1 can be correspondingly sleeved at the end part of the connecting joint 4 in the form of a bullet head, and can abut against the inner peripheral wall of the hemispherical or conical cavity on the bottle valve joint through the peripheral wall surface after being integrally embedded into the bottle valve joint, so that the sealing of the joint of the bottle valve joint and the connecting joint is realized.

More specifically, the sealing gasket 1 is made of Polytetrafluoroethylene (PTFE) material, which allows a certain degree of deformation to be achieved under extrusion, mainly considering the strength and deformability of the PTFE material. When seal gasket 1 sets up between bottle valve connects and attach fitting 4, under attach fitting 4's extrusion, the less one side of seal gasket 1 internal diameter can produce the extrusion deformation of certain degree, and the gap between abundant sealed attach fitting 4 and the bottle valve connect promotes sealed effect.

Further, in a preferred embodiment, the thickness of the sealing gasket 1 is sequentially increased from the side with the larger opening to the side with the smaller opening, so that the side with the smaller inner diameter of the sealing gasket 1 can be subjected to certain extrusion deformation during application, and the sealing effect of the sealing gasket 1 is improved. Of course, for some specific application environments, the thickness of the sealing gasket 1 can be increased from the side with smaller opening to the side with larger opening, or the sealing gasket 1 can be directly set to be of the same thickness. In addition, in practical installation, the thickness of the sealing gasket 1 in the preferred embodiment is 0.5-3 mm, the inner diameter of the opening on the larger inner diameter side is 12-25 mm, the inner diameter of the opening on the smaller inner diameter side is 8-15 mm, and the inner diameter ratio of the large inner diameter side to the small inner diameter side is 1.25-3. Meanwhile, the length of the sealing gasket 1 along the axial direction is 8-15 mm.

In another preferred embodiment, the schematic view of the sealing gasket 1 is shown in fig. 5, that is, the sealing gasket 1 is composed of a bowl-shaped body 101 and a bottom ring 102 which are continuously arranged, and are preferably integrally formed, and the bottom ring 102 is arranged on the side of the bowl-shaped body 101 with the smaller inner diameter, and the radial protrusion width of the bottom ring is 0.5-5 mm. By the arrangement of the bottom circular ring 102, a ring platform structure as shown in fig. 5 is formed inside the sealing gasket 1. By means of the arrangement of the ring platform structure, the connecting position of the connecting joint 4 and the steel cylinder joint can be further sealed.

The sealing gasket of the utility model is particularly suitable for the sealing connection of the steel cylinder with CGA580 interface or G-5/8 interface, and the combination form when setting is as shown in figure 1. Wherein, correspond steel bottle 3 and be provided with cylinder valve 2, its accordant connection is on the gas port of steel bottle 3, and corresponds the interface of cylinder valve 2 and be provided with attach fitting 4 to the other end that corresponds attach fitting 4 is provided with gas-supply pipe joint 5 for connect the gas-supply pipe. Meanwhile, a sealing gasket 1 is arranged between the cylinder valve 2 and the connecting joint 4, the sealing gasket 1 can be sleeved at the end part of the connecting joint 4 in a matching manner and is embedded into the interface of the cylinder valve 2, after the connecting joint 4 is stably connected with the cylinder valve 2, the sealing gasket 1 is extruded to one end with a smaller inner diameter, and the gap between the connecting joint 4 and the cylinder valve joint 2 is fully sealed.

The utility model provides a special seal gasket, its simple structure, it is sealed effectual, can effectively use on the steel bottle interface, realize the reliable of bottle valve and attach fitting sealed, promote reliability and security in the steel bottle application, have better spreading value and application prospect.

It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

Claims

1. A special sealing gasket is used for sealing a steel cylinder interface and is characterized in that,

2. The specialized sealing gasket of claim 1, wherein the thickness of the sealing gasket is constant.

3. The special sealing gasket of claim 1, wherein the thickness of said sealing gasket increases continuously from one axial side to the other axial side thereof.

4. The special sealing gasket according to any one of claims 1 to 3, wherein the thickness of the sealing gasket is 0.5 to 3 mm.

5. The special sealing gasket according to any one of claims 1 to 3, wherein the inner diameters of the openings at the two axial ends of the sealing gasket are 8 to 15mm and 12 to 25mm, respectively, and the ratio of the inner diameter of the large inner diameter side to the inner diameter of the small inner diameter side is between 1.25 and 3.

6. The special sealing gasket according to any one of claims 1 to 3, wherein a bottom ring is coaxially disposed in the side with the smaller inner diameter of the sealing gasket, the bottom ring is integrally formed with the sealing gasket, and a ring platform structure is formed at the end of the sealing gasket.

7. The special sealing gasket of claim 6, wherein the radial width of the bottom ring protruding from the inner peripheral wall surface of the sealing gasket is 0.5-5 mm.

8. A gas delivery device comprising the special sealing gasket according to any one of claims 1 to 7,

9. The gas delivery device of claim 8, wherein a gas delivery pipe connector capable of connecting a gas delivery pipe is further arranged corresponding to the connecting connector, and the gas delivery pipe connector is connected to one end of the connecting connector, which is far away from the cylinder valve.

10. A gas delivery device as claimed in claim 8 or 9, wherein the cylinder valve port is a CGA580 port or a G-5/8 port.