CN210003801U

CN210003801U - Sealing connection device and pipe fitting with same

Info

Publication number: CN210003801U
Application number: CN201920590571.3U
Authority: CN
Inventors: 谢倩
Original assignee: Jiangsu Miao Brand New Material Technology Co Ltd
Current assignee: Jiangsu Miao Brand New Material Technology Co Ltd
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2020-01-31
Anticipated expiration: 2029-04-26

Abstract

The utility model provides an kind of sealing connection device, it includes flexible sealing body and flexible line sealing member flexible sealing body is cyclic annular, the surface of flexible sealing body is annular plane, when sealing connection device seals outside mechanical structure, the surface of flexible sealing body forms the plane seal terminal surface flexible line sealing member is cyclic annular and is formed at the second surface of flexible sealing body and extends to side of keeping away from surface, the cross-section line of the terminal surface of flexible line sealing member on sealing connection device's central line direction is pitch arc or multistage straight line.

Description

Sealing connection device and pipe fitting with same

Technical Field

The utility model relates to a sealed technical field, and in particular to kind of sealing connection device and have sealing connection device's pipe fitting.

Background

The sealing mechanism of the flat gasket seal is basically the same as that of a low-pressure flange seal in , namely, a gasket is pressed by a main bolt connecting an end cover and a cylinder body, so that sufficient specific sealing pressure is generated on the pressing surface to prevent medium leakage, the sealing mechanism is generally used for sealing between two surfaces, the O-shaped sealing ring is a rubber sealing ring with a circular cross section, and the O-shaped sealing ring is called an O-shaped rubber sealing ring because the cross section is O-shaped, and is also called an O-shaped ring.

In a mechanical structure, when two parts with different structures are connected, because the structures of the connecting end surfaces are different, the surface seal or the line seal of the conventional single structure is difficult to realize the sealing connection between the two parts, the sealing performance is unstable, and the leakage is easy to occur.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome prior art not enough, provide sealing connection device that sealing performance is good and have sealing connection device's pipe fitting.

In order to achieve the above object, the present invention provides sealing and connecting device, which comprises a flexible sealing body and a flexible wire sealing member, wherein the flexible sealing body is annular, the th surface of the flexible sealing body is an annular plane, when the sealing and connecting device seals an external mechanical structure, the th surface of the flexible sealing body forms a plane sealing end surface, the flexible wire sealing member is annular and is formed on the second surface of the flexible sealing body and extends to the side far away from the th surface, and the section line of the end surface of the flexible wire sealing member in the direction of the central line of the sealing and connecting device is an arc line or a multi-segment straight line.

According to the utility model discloses an embodiment, flexible seal body still includes the surface middle part that forms at flexible seal body and to keeping away from the second surface side bellied at least reinforcing ring, the surface of reinforcing ring both sides at least forms plane seal terminal surface.

According to the utility model discloses an embodiment, flexible sealing body includes a plurality of reinforcing rings that form in the middle part of surface of flexible sealing body and along radial evenly distributed.

According to the utility model discloses an embodiment, flexible line sealing member is including connecting in the extension of flexible sealing body second surface and forming in the terminal line sealing of extension, and the cross-section line of the terminal surface of line sealing in the central line direction of sealing connection device is pitch arc or multistage straight line.

According to the utility model discloses an embodiment, sealed connecting device still includes internal seal portion, and the internal seal portion is formed at the th surface of flexible seal body and extends to side of keeping away from the second surface along the inner wall of flexible seal body.

According to the utility model discloses an embodiment, sealing connection device still includes the interior sealed portion of second, and the interior sealed portion of second forms in the second surface of flexible seal body and extends to the side of keeping away from surface along the inner wall of flexible seal body.

According to an embodiment of the invention, the end of the th inner seal and/or the end of the second inner seal has an insertion guide surface.

According to the utility model discloses an embodiment, flexible line seal spare, internal seal portion and second internal seal portion all with flexible sealing body body shaping.

The utility model discloses the aspect still provides kinds of pipe fittings with sealing connection device in addition, and it includes body, second body and at least above-mentioned sealing connection device, body has at least link ends, every sealing connection device's plane seal face and flexible line sealing member sealing connection corresponding link and second body respectively.

To sum up, the utility model provides an among the sealing connection device and the pipe fitting that has sealing connection device, the surface on the flexible seal body is plane, forms the plane seal terminal surface, can and outside mechanical structure between form the face to the face sealed, and the flexible line sealing member that forms on the second surface, because its terminal surface is pitch arc or multistage sharp at the ascending cross-section line of sealing connection device's central line direction, so when it is sealed with outside mechanical structure then form the line seal structure that is similar to O shape circle, not only sealed effectual and can be used in the developments application that has relative motion between the part (like in the rotation connection structure of pipe fitting and pipe fitting).

, the flexible sealing body has at least reinforcing rings in the middle of its surface, and the surfaces on both sides of the reinforcing rings form plane sealing end faces, the reinforcing rings are arranged to provide face sealing and line sealing on the surface, or more reinforcing rings form sealing reinforcing contacts, and is used to improve the sealing performance.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a schematic structural diagram of a sealing connection device according to an embodiment of the present invention .

Fig. 2 is a schematic structural diagram of fig. 1 from another view point .

Fig. 3 is a cross-sectional view of fig. 1.

Fig. 4 is a schematic structural diagram of a pipe fitting with a sealing connection device according to an embodiment of the present invention .

Fig. 5 is a cross-sectional view of fig. 4.

Detailed Description

Fig. 1 is a schematic structural view of a sealing connection device according to an embodiment of the present invention , fig. 2 is a schematic structural view of fig. 1 from another view angle , fig. 3 is a sectional view of fig. 1, fig. 4 is a schematic structural view of a pipe fitting with a sealing connection device according to an embodiment of the present invention , and fig. 5 is a sectional view of fig. 4, please refer to fig. and fig. 1 to 5.

As shown in fig. 1, the sealing connection device 30 provided by the present embodiment comprises a flexible sealing body 1 and a flexible wire seal 2, wherein the flexible sealing body 1 is annular, the th surface 11 of the flexible sealing body 1 is an annular plane, and the th surface 11 of the flexible sealing body forms a plane sealing end surface when the sealing connection device 30 seals an external mechanical structure, the flexible wire seal 2 is annular and is formed on the second surface 12 of the flexible sealing body 1 and extends to the side far away from the th surface 11, and the section line of the end surface of the flexible wire seal 2 in the direction of the center line of the sealing connection device is an arc line or a multi-segment straight line.

The surface 11 of the flexible sealing body of the sealing and connecting device 30 provided in this embodiment is a plane surface which forms a face seal when it seals an external mechanical structure, while the flexible wire sealing element 2 formed on the second surface 12 of the flexible sealing body forms a wire seal with an external mechanical structure when it seals the external mechanical structure because its end surface is a curved line or a plurality of straight lines.

In the present embodiment, the flexible wire seal 2 includes an extension portion 21 connected to the flexible seal body second surface 12 and a wire seal portion 22 formed at a distal end of the extension portion 21. The section line of the end face of the wire sealing portion 22 in the direction of the center line of the seal connecting device is an arc line. However, the present invention is not limited to this. In other embodiments, the flexible seal may not include an extension; or the section line of the end face of the flexible wire sealing element in the direction of the central line of the sealing connecting device can be a plurality of straight lines, and the plurality of straight lines form a triangle, etc.

In this embodiment, as shown in fig. 3, the flexible sealing body further includes three reinforcing rings 13 formed in the middle of the surface 11 of the flexible sealing body and protruding toward the side away from the second surface 12, and the three reinforcing rings 13 are uniformly distributed along the radial direction of the flexible sealing body, and the th surfaces on both sides of the three reinforcing rings form a planar sealing end surface.

In this embodiment, as shown in FIG. 3, the cross-sectional line of each of the ends of the bead is an arc, the three beads 13 form three seal reinforcement contacts on the th surface 11, and a line seal is formed between the end face of each of the beads 13 and the external mechanical structure in the axial cross-section of the flexible seal assembly, and further improves the sealing performance on the th surface 11.

in this embodiment, the sealing connection device further includes th inner sealing portion 3 and second inner sealing portion 4. th inner sealing portion 3 is formed on th surface 11 of the flexible sealing body and extends along the inner wall of the flexible sealing body 1 to side away from the second surface 12. second inner sealing portion 4 is formed on the second surface 12 of the flexible sealing body and extends along the inner wall of the flexible sealing body 1 to side away from th surface 11. when the sealing connection device sealingly connects the two external mechanical structures, the th inner sealing portion 3 and second inner sealing portion 4 respectively extend into the external mechanical structure and are in interference fit with the external mechanical structure, and step improves the sealing effect and effectively prevents leakage.

In order to facilitate the insertion of the th inner seal portion 3 and the second inner seal portion 4 into the outer tube, in the present embodiment, both the end of the th inner seal portion 3 and the end of the second inner seal portion 4 have the insertion guide surface 31.

In this embodiment, the flexible sealing body 1, the flexible wire sealing member 2, the th inner sealing portion 3 and the second inner sealing portion 4 are made of rubber, and in the step , the flexible wire sealing member 2, the th inner sealing portion 3 and the second inner sealing portion 4 are formed with the flexible sealing body 1 , and are connected with each other in a seamless manner, thereby achieving a better sealing effect.

As shown in fig. 4 and 5, this embodiment further provides kinds of pipe fittings with sealing connection devices, which include the th pipe body 10, two second pipe bodies 20 and two sealing connection devices 30 provided in this embodiment, the th pipe body 10 has two connection ends 101, and two sealing connection devices 30 respectively and sealingly connect the second pipe body 20 and the corresponding connection ends 101. specifically, a surface seal is achieved between the planar sealing end surface on the th surface 11 and the end surface of the connection end 101 of the th pipe body, and the three reinforcing rings 13 enhance the sealing performance therebetween.

To sum up, the utility model provides an among the sealing connection device and the pipe fitting that has sealing connection device, the surface on the flexible seal body is plane, forms the plane seal terminal surface, can connect with the outside and unload and form the face to the face sealed between the structure, and the flexible line sealing member that forms on the second surface, because its terminal surface is pitch arc or multistage sharp at the ascending cross-section line of sealing connection device's central line direction, so when it is sealed with outside mechanical structure then form the line seal structure that is similar to O shape circle, not only sealed effectual and can be used in the dynamic application that has relative motion between the part (like in the connection structure of pipe fitting and pipe fitting).

, the middle of surface of the sealing body is provided with at least reinforcing rings, surfaces on two sides of the reinforcing rings form plane sealing end faces, the reinforcing rings are arranged to enable the surface to be simultaneously provided with a face seal and a wire seal, or more reinforcing rings form sealing reinforcing contacts, and the sealing performance is further improved.

Although the present invention has been described with reference to the preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but is capable of other modifications and variations without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

A sealed coupling device of the type , comprising:

the flexible sealing body is annular, the th surface of the flexible sealing body is an annular plane, and when the sealing connecting device seals an external mechanical structure, the th surface of the flexible sealing body forms a plane sealing end face;

and the flexible wire seal is annular and is formed on the second surface of the flexible seal body and extends to the side far away from the surface, and the section line of the end surface of the flexible wire seal in the direction of the center line of the sealing connecting device is an arc line or a plurality of straight lines.
2. The sealed connection of claim 1, wherein the flexible seal body further comprises at least stiffening rings formed in the middle of the th surface of the flexible seal body and projecting to the side away from the second surface, the th surface on either side of at least stiffening rings forming a planar sealing end face.
3. The sealing interface as claimed in claim 2 wherein the flexible sealing body includes a plurality of radially evenly distributed stiffening rings formed in the center of the th surface of the flexible sealing body.
4. The sealed connection of claim 1, wherein the flexible wire seal comprises an extension portion connected to the second surface of the flexible seal body and a wire seal portion formed at a distal end of the extension portion, wherein a cross-sectional line of an end surface of the wire seal portion in a direction of a centerline of the sealed connection is an arc line or a plurality of straight lines.
5. The sealed connection of claim 1, further comprising a inner seal, the inner seal formed on a surface of the flexible seal body and extending along an inner wall of the flexible seal body to a side away from the second surface.
6. The sealing connection as claimed in claim 1 or claim 5 further comprising a second inner seal formed on the second surface of the flexible sealing body and extending along the inner wall of the flexible sealing body to a side away from the th surface.
7. The sealing joint as claimed in claim 6, wherein the end of the th inner seal portion and/or the end of the second inner seal portion has an insertion guide surface.
8. The sealed connection of claim 6, wherein the flexible wire seal, th inner seal portion and second inner seal portion are each integrally formed with flexible seal body .
9, A fitting having a sealed connection, comprising:

an th tube body having at least connection ends;

at least second tubes, and

at least sealed connectors as claimed in any one of claims 1 to 8 at , wherein each sealed connector has a planar sealing end face and a flexible wire seal for sealingly connecting a connecting end of a corresponding tube body to a second tube body.