CN204254086U - The sealing configuration of jointing - Google Patents

Abstract

The sealing structure of the connection joint includes the use end, the connection core and the sealing ring. The connection core includes a connection part and a limit part for connecting to the inside of the use end. There is a matching part, and a chamfer is provided at the intersection of the first surface and the second surface of the matching part. When the utility model is installed, the sealing ring is sandwiched between the matching part, the connecting part and the limiting part. Due to the change of the angle of the force-bearing surface, the original two force-bearing surfaces are changed into three force-bearing surfaces, so that the sealing The ring is easily pressed into a closed airtight state, so as to play a sealing role. Because the force-bearing surface is increased, the force required to achieve sufficient sealing strength is reduced. Therefore, the connection using the above sealing methods becomes easier and more reliable. Many connections only need to be tightened with simple tools or directly by hand to achieve the connection seal. The purpose of this method is especially effective in systems that are often assembled and disassembled.

Description

Sealing structure of connecting joints

technical field

The utility model relates to a sealing structure for connecting joints.

Background technique

When transporting gas or fluid, the delivery pipeline at the supply end needs to be connected to the use end through a connection core with a through hole. When connecting, the connection core and the use end need to be sealed. The existing sealing structure is mainly between the connection core and the use end. The sealing ring is clamped on the two opposite planes on the outside of the connection of the use end. Since there are only two forces acting on the opposite faces, the connection between the connecting core and the use end needs to be clamped with a special clamping tool. In order to provide enough clamping force for the sealing ring to make it seal, when in use, it is easy to cause leakage due to insufficient clamping force.

Utility model content

Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a sealing structure for connecting joints, which is not prone to leakage due to insufficient clamping strength of the sealing ring, and has a better sealing effect.

In order to achieve the above object, the utility model adopts the following technical solutions:

The sealing structure of the connection joint includes the use end, the connection core and the sealing ring. The connection core includes a connection part and a limit part for connecting to the inside of the use end. There is a matching part, the inner side of the matching part is provided with a first surface that cooperates with the outer side of the connecting part, one end of the matching part is provided with a second surface that cooperates with the end surface of the limiting part, and the intersection of the first surface and the second surface is provided with For chamfering, the sealing ring is sandwiched between the matching part, the connecting part and the limiting part, and the sealing ring is sandwiched in the space surrounded by the chamfered end face, the connecting part and the limiting part.

The limiting portion is also provided with a groove capable of limiting the sealing ring at the end face opposite to the chamfer.

The connection core and the use end are connected by thread connection or flange connection.

The beneficial effects of the utility model are:

Compared with the prior art, when the utility model is installed, the sealing ring is sandwiched between the matching part, the connecting part and the limiting part. Due to the change of the angle of the force-bearing surface, the original two force-bearing surfaces are changed to three. A force-bearing surface, so that the sealing ring is easily pressed into a closed and sealed state, so as to play a sealing role. Since the chamfered end face, the connecting part and the limit part enclose a space with a large inside and a small outside, the sealing ring can easily slide into the space. In addition, due to the uniqueness of the large inside and small outside of the space, when the connection is sealed, the inside of the pipeline The fluid will not leak due to the insufficient strength of the sealing ring. Therefore, the use of this sealing method basically eliminates the occurrence of leakage.

Furthermore, because of the increase of the force bearing surface, the force required to achieve sufficient sealing strength is reduced. Therefore, the connection using the above sealing method becomes easier and more reliable. Many connections only need to be fastened with simple tools or directly by hand. To achieve the purpose of connection sealing, this method is especially effective in systems that are often assembled and disassembled.

Description of drawings

Fig. 1 is the internal structure schematic diagram of the present utility model;

FIG. 2 is a schematic diagram of the structure of FIG. 1 before assembly.

Among them: 10. Use end; 11. Fitting part; 111. First face; 112. Second face; 113. Chamfer; 20. Connecting core; 21. Connecting part; 22. Limiting part; 221. Groove ; 30, sealing ring.

Detailed ways

Below, in conjunction with accompanying drawing and specific embodiment, the utility model is described further:

As shown in Fig. 1 and Fig. 2, the sealing structure of the connection joint of the present utility model comprises a use end 10, a connection core 20 and a sealing ring 30, and the connection core 20 includes a connection part 21 for connecting to the inside of the use end 10 and Limiting portion 22, the limiting portion 22 is protrudingly arranged on the outside of the connecting portion 21, the use end 10 is provided with a matching portion 11, the inner side of the matching portion 11 is provided with a first surface 111 that cooperates with the outside of the connecting portion 21, and the matching portion 11 One end is provided with a second surface 112 matching with the end surface of the limiting part 22, a chamfer 113 is provided at the intersection of the first surface 111 and the second surface 112, and the sealing ring 30 is sandwiched between the matching part 11, the connecting part 21 and the limiting part. between the position portions 22 , and the sealing ring 30 is interposed in the space enclosed by the end surface of the chamfer 113 , the connecting portion 21 and the limiting portion 22 .

During installation, the sealing ring 30 is interposed between the mating part 11, the connecting part 21 and the limiting part 22. Due to the change of the angle of the force-bearing surface, the original two force-bearing surfaces are changed to three force-bearing surfaces, so that The sealing ring 30 is easily compressed to close the airtight state, so as to play a sealing role. Since the end face of the chamfer 113, the connecting part 21 and the limiting part 22 form a space with a large inside and a small outside, the sealing ring 30 can easily slide into the space. At this time, the fluid in the pipeline will not leak due to insufficient strength of the sealing ring 30. Therefore, the use of this sealing method basically prevents the occurrence of leakage.

Furthermore, because of the increase of the force bearing surface, the force required to achieve sufficient sealing strength is reduced. Therefore, the connection using the above sealing method becomes easier and more reliable. Many connections only need to be fastened with simple tools or directly by hand. To achieve the purpose of connection sealing, this method is especially effective in systems that are often assembled and disassembled.

Preferably, the limiting portion 22 is provided with a groove 221 on the end face opposite to the chamfer 113 , which can limit the sealing ring 30 , so that the sealing ring 30 can be further limited in the above-mentioned space to increase the sealing performance.

Further, the connection core 20 and the use end 10 may be connected by screw connection, flange connection or other methods.

For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and ideas described above, and all these changes and deformations should fall within the protection scope of the claims of the present utility model.

Claims (3)

1. the sealing configuration of jointing, comprise using end, connect fuse and seal ring, it is characterized in that, connecting core attached bag draws together joint for being connected to using end inside and limited part, limited part is convexly equipped in outside joint, using end is provided with auxiliary section, the inner side of auxiliary section is provided with and the first surface coordinated outside joint, one end of auxiliary section is provided with second that coordinates with the end face of limited part, the intersection of first surface and second is provided with chamfering, seal ring is located in auxiliary section, between joint and limited part, and seal ring is located in chamfering end face, in the space that joint and limited part surround.

2. the sealing configuration of jointing as claimed in claim 1, is characterized in that, limited part is also provided with in and end that is that establish relative with chamfering can the groove of position limiting sealed circle.

3. the sealing configuration of jointing as claimed in claim 1, is characterized in that, connects fuse and using end is threaded connection or Flange joint.