WO2023231847A1

WO2023231847A1 - Sealing ring

Info

Publication number: WO2023231847A1
Application number: PCT/CN2023/095898
Authority: WO
Inventors: 郝百顺
Original assignee: 郝百顺
Priority date: 2022-06-02
Filing date: 2023-05-23
Publication date: 2023-12-07
Also published as: CN217899115U

Abstract

A sealing ring (2), comprising: a sealing body (21), at least a portion of the sealing body (21) extending outward in the radial direction of the sealing ring (2); a positioning portion (22), connected to the sealing body (21) in the axial direction of the sealing ring (2), at least a portion of the positioning portion (22) extending outward in the radial direction of the sealing ring (2); the inner diameter of the positioning portion (22) being less than the inner diameter of the sealing body (21); and an annular skeleton (23), located in the positioning portion (22). The sealing body extending outward in the radial direction of the sealing ring enhances the sealing effect of the sealing ring; the positioning portion extending outward in the radial direction of the sealing ring reduces the possibility of rolling or sliding of the sealing ring, thus improving the sealing effect; the annular skeleton increases the positioning reliability of the sealing body, and realizes the sealing between the sealing body and a socket.

Description

sealing ring

Cross-references to related applications

This application claims priority to Chinese patent application 202221385661.7 titled "Sealing Ring", which was submitted on June 2, 2022. The entire content of this application is incorporated herein by reference.

Technical field

The present application relates to the technical field of concrete pipes and socket interfaces, and in particular to a sealing ring.

Background technique

Concrete pipes are used to transport water at high volumes over long distances. When two concrete pipes are plugged together, in order to ensure good sealing at the joint of the concrete pipes, a sealing ring is usually provided. When plugging, the sealing ring is placed outside the socket end and inserted into the socket end together. Under the joint action of the spigot end and the socket end, the sealing ring will roll or slide between them, or even slip out of the limit step of the sealing groove, causing sealing failure.

Contents of the invention

The embodiment of the present application provides a sealing ring that can reduce the risk of the sealing ring affecting the sealing of the concrete pipe due to sliding or rolling.

On the one hand, embodiments of the present application provide a sealing ring, including: a sealing body, at least part of which extends outward along the radial direction of the sealing ring; a positioning part connected to the sealing body along the axial direction of the sealing ring, at least part of which The positioning part extends outward in the radial direction of the sealing ring; the annular skeleton is located in the positioning part.

According to an embodiment of one aspect of the present application, a conical structure is provided on the inside of the sealing ring, and the inner diameter of the conical structure gradually increases along the axial direction of the sealing ring.

According to an embodiment of one aspect of the present application, along the axial direction of the seal ring, from the positioning portion to the seal body direction, the inner diameter of the tapered structure gradually decreases.

According to an embodiment of one aspect of the present application, the cross-sectional shape of the sealing body includes a first side, a second side and a third side extending in the radial direction of the sealing ring, and the second side, the first side and the third side are connected in sequence, The first side is a convex curve; the diameter of the sealing body corresponding to the second side and the corresponding third side are both smaller than the diameter of the sealing body corresponding to the first side.

According to an embodiment of one aspect of the present application, the cross-sectional shape of the positioning portion includes a fourth side, a fifth side and a sixth side extending along the radial direction of the sealing ring, and the fifth side, the fourth side and the sixth side are connected in sequence, The fourth side is a convex curve; the diameters of the positioning portion corresponding to the fifth side and the sixth side are both smaller than the diameter of the sealing body corresponding to the fourth side.

According to an embodiment of one aspect of the present application, the skeleton is located in an area formed by the positioning portion corresponding to the fifth side, the fourth side and the sixth side.

According to an embodiment of one aspect of the present application, the cross-sectional shape of the sealing body further includes a seventh side, and the third side, the seventh side and the fifth side are connected in sequence.

According to an embodiment of one aspect of the present application, along the axial direction of the sealing ring, between the positioning part and the sealing body, there is a recessed part along the radial direction of the sealing ring; the third side, the seventh side and the fifth side are connected to the axial direction of the sealing ring. The cross-sectional shape of the recess corresponds.

According to an embodiment of one aspect of the present application, the minimum outer diameter of the recess is smaller than the diameter of the skeleton.

According to an embodiment of one aspect of the present application, the cross-sectional shape of the sealing body further includes an eighth side, and the sixth side, the eighth side and the second side are connected in sequence; the eighth side corresponds to the inner side of the tapered structure.

According to an embodiment of one aspect of the present application, the sealing ring is used for plug-in sealing between the socket end and the spigot end of the concrete pipe, and the inner diameter of at least part of the surface corresponding to the eighth side is smaller than the outer diameter of the spigot end.

According to an embodiment of one aspect of the present application, the skeleton exerts a radial outward force on the positioning portion along the sealing ring.

The sealing ring provided in the embodiment of the present application ensures the sealing effect of the sealing ring through the sealing body extending radially outward along the radial direction of the sealing ring, and reduces the risk of the sealing ring being inserted into the concrete pipe by extending the positioning portion along the radial direction outward of the sealing ring. connection, and the possibility of rolling or sliding occurs, fixing the position of the sealing ring relative to the concrete pipe. By reducing the risk of rolling and sliding of the sealing ring, embodiments of the present application can improve the sealing effect and sealing reliability.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the drawings required to be used in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. Those of ordinary skill in the art can also obtain other drawings based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of a concrete pipe according to an embodiment of the present application.

FIG. 2 is a sectional view of the concrete pipe taken along section A-A in FIG. 1 .

Figure 3 is a schematic structural diagram of the sealing ring of the concrete pipe according to the embodiment of the present application.

Figure 4 is a cross-sectional schematic diagram of the lining plate of the concrete pipe according to the embodiment of the present application.

Figure 5 is a schematic structural diagram of a plurality of pipe bodies of a concrete pipe according to an embodiment of the present application when they are connected.

Figure 6 is a schematic cross-sectional view of the sealing ring of the concrete pipe according to the embodiment of the present application.

Reference signs:
1. Pipe body; 11. Socket end; 12. Lining plate; 121. Sealing groove; 122. Positioning groove;
13. Socket end;
2. Sealing ring; 21. Sealing body; 211. First side; 212. Second side; 213. Third side; 214. Eighth side; 22. Positioning part; 221. Fourth side; 222. Fifth side ; 223. Sixth side; 23. Skeleton; 24. Depression; 241. Seventh side.

Detailed ways

Features and exemplary embodiments of various aspects of the application are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, it will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the present application by illustrating examples of the present application.

It should be noted that, as long as there is no conflict, the embodiments and features in the embodiments of this application can be combined with each other. The embodiments will be described in detail below with reference to the accompanying drawings.

Relational terms such as first, second, etc. are only used to distinguish one entity or operation from another entity or operation and do not necessarily require or imply the existence of a relationship between these entities or operations. in any such actual relationship or sequence. Furthermore, the terms "comprises,""comprises," or any other variations thereof are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also those not expressly listed other elements, or elements inherent to the process, method, article or equipment. Without further limitation, an element defined by the statement "comprising..." does not exclude the presence of additional identical elements in a process, method, article, or device that includes the stated element.

It will be understood that when describing the structure of components, when one layer or region is referred to as being "on" or "over" another layer or region, it can mean being directly on the other layer or region, or There are other layers or areas between it and another layer, another area. And if the part is turned over, that layer, one area, will be "under" or "under" another layer, area.

In addition, the term "and/or" in this article is only an association relationship that describes related objects, indicating that there can be three relationships. For example, A and/or B can mean: A alone exists, and A and B exist simultaneously. There are three cases of B alone. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship.

It should be understood that in the embodiment of the present application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean determining B only based on A. B can also be determined based on A and/or other information.

The applicant found that when using concrete pipes, multiple sections of concrete pipes are usually prefabricated. One end of each section of concrete pipe is a socket end and the other end is a socket end. The multiple sections of concrete pipes are then inserted in sequence. Among them, the socket of a certain section of concrete pipe The end is inserted into the socket end of the adjacent concrete pipe. In order to seal the plug joint, a sealing ring is installed between the socket end and the socket end. First set the sealing ring on the socket end, and then insert the socket end and socket end. However, during plugging, since the cross-section of the sealing ring is usually circular and forms a columnar or conical shape, the relative movement between the socket end and the socket end will cause the sealing ring to roll. When plugged in, the sealing ring with elastic elongation properties will cross the limit step under the reaction force of the socket end and cannot enter the socket end as planned. It will cause damage to the sealing ring. Even if the sealing ring is not damaged, it will cause the sealing ring to not be close to the inner and outer walls of the socket and plug end, resulting in the failure of the concrete pipe. Seal failure. Therefore, in actual construction, the traditional concrete socket pipe sealing method has a high probability of sealing failure.

In view of the above problems, embodiments of the present application provide a concrete pipe. One end of the pipe body is a socket end, a lining plate is provided inside the socket end, and a sealing groove and a positioning groove are provided on the lining plate. By setting up lining plates with higher structural strength, the problem of poor strength of the concrete structure can be compensated, thereby reducing the risk of deformation and cracking of the sealing groove and positioning groove, thereby reducing the possibility of rolling or sliding failure of the sealing ring. In addition, the positioning groove can fix the position of the sealing ring relative to the concrete pipe and reduce the possibility of the sealing ring sliding or rolling. By reducing the risk of rolling and sliding of the sealing ring, the embodiments of the present application can improve the sealing effect and reliability, and have anti-retraction and self-locking functions.

Example 1

Figure 1 is a schematic structural diagram of a concrete pipe according to an embodiment of the present application. FIG. 2 is a sectional view of the concrete pipe taken along section A-A in FIG. 1 . Figure 3 is a schematic structural diagram of the sealing ring of the concrete pipe according to the embodiment of the present application. Figure 4 is a cross-sectional schematic diagram of the lining plate of the concrete pipe according to the embodiment of the present application.

Referring to Figures 1 to 4, embodiments of the present application provide a concrete pipe, including: at least one pipe body 1 extending along a first direction. The pipe body 1 includes a socket end 11 and a lining plate 12. The socket end 11 Located at the end of the pipe body 1 along the first direction, the lining plate 12 is located inside the socket end 11. The lining plate 12 includes an inner wall surface, and the inner wall surface is provided with a sealing groove 121 and a positioning groove 122; at least one sealing ring 2, the sealing ring 2 is located inside the lining plate 12, at least part of the sealing ring 2 is coupled with the sealing groove 121, at least part of the sealing ring 2 is coupled with the positioning groove 122, and at least part of the sealing ring 2 protrudes relative to the inner wall surface.

It should be noted that the cross-sectional shape of the concrete pipe in the embodiment of the present application along the vertical circumferential direction may be circular or multi-deformed. In the embodiment of the present application, a circular shape is used as an example for explanation.

The pipe body 1 can be made in a prefabricated form. When installing the concrete pipe, the sealing ring 2 is installed inside the socket end 11 of the prefabricated pipe body 1 . Insert the plugging object into the socket end 11 to realize the connection. The plug-in object can be other pipelines or other pipe bodies 1 of concrete pipes. The pipe body 1 is made by pouring concrete. When pouring the concrete, the lining plate 12 is placed inside the socket end 11, so that the lining plate 12 is located at the socket end 11 of the formed pipe body 1. inside. Lining plate 12 is made of material with greater structural strength, thereby reducing density. The risk of deformation or expansion and cracking of the sealing groove 121 compensates for the poor local strength of the concrete, thereby reducing the possibility of the sealing ring 2 being separated from the sealing groove 121 due to rolling or sliding, ensuring the sealing effect of the concrete pipe in the embodiment of the present application.

A sealing groove 121 is provided on the inner wall surface of the lining plate 12, and a part of the sealing ring 2 is coupled with the sealing groove 121, thereby ensuring the sealing effect of the sealing ring 2 on the insertion joint. A positioning groove 122 is also provided on the inner wall surface of the lining plate 12 , and a part of the sealing ring 2 is coupled with the positioning groove 122 . Even if the plugged object is inserted into the socket end 11 and the sealing ring 2 is subjected to a shearing moment, since a part of the sealing ring 2 is coupled with the positioning groove 122, the possibility of rolling or sliding of the sealing ring 2 can be reduced, thereby ensuring good sealing. Effect. When the insertion object is inserted into the socket end 11, at least part of the sealing ring 2 protrudes relative to the inner wall surface, so that the protruding portion of the sealing ring 2 relative to the inner wall surface can contact the insertion object, thereby achieving the purpose of sealing.

When the plugging object is inserted into the socket end 11 , the protruding portion of the sealing ring 2 relative to the inner wall surface is deformed by the plugging object, and bends in a direction away from the socket end 11 . After the plug-in object is completely inserted into the socket end 11, if the plug-in object tends to withdraw under the action of external force, the protruding portion of the sealing ring 2 relative to the inner wall surface has deformed, and will tend to return to deformation, causing the The sealing ring 2 is further compressed, thereby generating greater frictional resistance to prevent the plugged object from exiting the socket end 11 , thereby realizing the self-locking function after plugging.

Further, continuing to refer to Figures 1 to 4, the sealing ring 2 includes a sealing body 21, at least part of the sealing body 21 is coupled with the sealing groove 121, the inside of the sealing ring 2 is provided with a tapered structure, and the inner diameter of the tapered structure extends along the edge away from the bearing. The end direction of the oral end 11 gradually decreases.

When the insertion object is inserted into the pipe body 1 , at least part of the sealing body 21 of the sealing ring 2 is coupled with the sealing groove 121 , thereby achieving sealing between the sealing ring 2 and the socket end 11 . The inner side of the sealing ring 2 is provided with a tapered structure, and the inner diameter of the tapered structure gradually decreases along the end direction away from the socket end 11, which can play a role in alignment during insertion. When the connection object is inserted into the pipe body 1, the plug-in object will be inserted from the end with the larger inner diameter of the formation structure and aligned with the guide of the tapered structure so that the axis of the plug-in object coincides with the axis of the pipe body 1 , to achieve the purpose of alignment, thereby reducing the difference in force on the sealing ring 2 along the circumferential direction of the pipe body 1, further reducing the possibility of the sealing ring 2 failing due to uneven force, and thereby enhancing the sealing effect. .

Further, continuing to refer to FIGS. 1 to 4 , the sealing ring 2 further includes a positioning portion 22 , at least part of the positioning portion 22 is coupled with the positioning groove 122 . The positioning portion 22 is used to fix the position of the sealing ring 2 relative to the lining plate 12 , in particular to reduce the possibility of the sealing ring 2 sliding relative to the lining plate 12 , thereby reducing the risk of sealing failure caused by the sealing ring 2 disengaging from the sealing groove 121 .

Further, continuing to refer to Figures 1 to 4, the inner wall surface is also provided with a raised portion, and the raised portion is located between the sealing groove 121 and the positioning groove 122; the sealing ring 2 also includes a recessed portion 24, and the recessed portion 24 and the raised portion are coupling. The coupling of the protruding portion and the recessed portion 24 can further reduce the possibility of the sealing ring 2 sliding relative to the lining plate 12 . In addition, when the sealing ring 2 is subjected to a shearing moment, the protruding portion and the recessed portion 24 are coupled, and the positioning portion 22 and the positioning groove 122 are coupled, so that the lining plate 12 can exert a torque in the opposite direction on the sealing ring 2 , reducing the possibility of the sealing ring 2 rolling relative to the lining plate 12 and reducing the risk of sealing failure caused by the sealing ring 2 coming out of the sealing groove 121 .

Further, continuing to refer to FIGS. 1 to 4 , the sealing ring 2 also includes a skeleton 23 . The skeleton 23 is disposed in the positioning portion 22 along the circumferential direction of the sealing ring 2 . The skeleton 23 is located in the space formed by the positioning groove 122 . The skeleton 23 is used to support the sealing ring 2 so that the sealing ring 2 is in an expanded state. It should be noted that the skeleton 23 can be made of a rigid material in a compressed state, and exerts a radially outward force on the sealing ring 2 so that the sealing ring 2 is in an outwardly stretched state. If the sealing ring 2 slides or rolls relative to the lining plate 12 , the positioning portion 22 will be separated from the positioning groove 122 . Since the skeleton 23 is located in the space formed by the positioning groove 122, the tension of the skeleton 23 itself can prevent the positioning part 22 from being separated from the positioning groove 122, thereby reducing the possibility of the sealing ring 2 sliding or rolling relative to the liner 12, thereby enhancing the sealing effect. .

Further, continuing to refer to Figures 1 to 4, the positioning groove 122 is located on one side of the sealing groove 121 close to the end of the socket end 11; the skeleton 23 of the sealing ring 2 is located in the positioning groove 122, and the tension of the skeleton 23 can make the seal body 21 can be maintained in the sealing groove 121 to prevent the sealing body 21 from protruding from the sealing groove 121 and achieve the first sealing of the sealing ring 2 and the socket end 11 .

In addition, when the insertion object is inserted into the pipe body 1, since the positioning groove 122 is located on the side of the sealing groove 121 close to the end of the socket end 11, the positioning groove 122 can exert a torque on the sealing ring 2 to hinder its rotation. Therefore, The possibility of the sealing ring 2 rolling relative to the lining plate 12 can be reduced. In addition, the maximum inner diameter of the positioning groove 122 is larger than the maximum inner diameter of the sealing groove 121 , so that the positioning groove 122 can be aligned with the positioning groove 122 . The arm of the moment exerted by the portion 22 becomes larger, thereby reducing the magnitude of the force exerted by the positioning groove 122 on the positioning portion 22, thereby reducing the possibility of the sealing ring 2 failing due to excessive force.

Further, continuing to refer to FIG. 4 , the cross-sectional shape of the positioning groove 122 is a trapezoid, and the side close to the end surface of the socket end 11 corresponds to the hypotenuse of the trapezoid; in the uncompressed state, at least part of the lateral direction of the positioning portion 22 The cross-sectional shape is semicircular. Since the cross section of the positioning groove 122 is trapezoidal, and the side close to the end surface of the socket end 11 corresponds to a hypotenuse of the trapezoid, therefore, when installing the sealing ring 2, the sealing ring 2 can be first moved through the corresponding hypotenuse. Insert the positioning groove 122 obliquely, and then rotate the sealing ring 2 so that the positioning part 22 is coupled with the positioning groove 122 and the sealing body 21 is coupled with the sealing groove 121 . The other side can reduce the possibility that the positioning part 22 slips out of the positioning groove 122 . When the insertion object is inserted into the pipe body 1, the sealing ring 2 is squeezed and the positioning part 22 is deformed. The positioning part 22 with a semicircular cross-sectional shape can be coupled with the positioning groove 122 with a right-angled trapezoidal cross-sectional shape. It can also play a sealing role. In addition, the bottom width of the positioning groove 122 along the axial direction of the socket end 11 is smaller than the width of the positioning portion 22 . The trapezoidal cross-sectional shape can make it easier for the positioning portion 22 to enter the positioning groove 122 . The bottom width of the positioning groove 122 is slightly smaller, so that It is more difficult for the positioning part 22 to slide out of the positioning groove 122. Squeezing the positioning part 22 into the positioning groove 122 provides an additional sealing guarantee.

Further, continuing to refer to FIG. 4 , the cross-sectional shape of the sealing groove 121 is a rectangle; in the uncompressed state, the cross-sectional shape of at least part of the sealing body 21 is a semicircle. The sealing groove 121 with a rectangular cross-sectional shape can reduce the possibility of separation between the sealing body 21 and the sealing groove 121, thereby ensuring a good sealing effect. Since the maximum inner diameter of the positioning groove 122 is larger than the maximum inner diameter of the sealing groove 121 , the sealing groove 121 with a rectangular cross-sectional shape will not have a significant impact on the installation of the sealing ring 2 . When the plugging object is plugged into the pipe body 1, the sealing ring 2 is squeezed and the sealing body 21 is deformed. The sealing body 21 with a semicircular cross-sectional shape can be coupled with the rice flour groove with a rectangular cross-sectional shape to ensure Sealing effect.

When assembling the sealing ring 2 inside the socket end 11 , a portion of the positioning portion 22 is first assembled into the positioning groove 122 . Then, push the sealing ring 2 at one place in the circumferential direction of the sealing ring 2 to make the sealing ring 2 eccentric with the socket end 11. At this time, the sealing ring 2 at that place is coupled with the liner 12. From there, gradually tap the sealing ring 2 along the circumferential direction of the sealing ring 2, so that other parts of the sealing ring 2 are also coupled with the lining plate 12, until the sealing ring 2 is coupled with the lining plate 12 everywhere along the circumferential direction. , sealing ring 2 and bearing The mouth end 11 is coaxial, and the assembly of the sealing ring 2 and the socket end 11 is completed. The diameter of the skeleton 23 of the sealing ring 2 is larger than the minimum diameter of the lining plate 12 , so that the skeleton 23 is also located in the positioning groove 122 .

Further, continuing to refer to Figures 1 to 4, the minimum inner diameter of the inner wall surface of the lining plate 12 is equal to the inner diameter of the socket end 11, so that the inner wall surface of the lining plate 12 and the inner side of the socket end 11 can form a complete cylinder. , so that the plugged object can be smoothly inserted into the socket end 11, and the lining plate 12 is prevented from interfering with the plugging of the plugged object.

Further, referring to Figure 5, the number of pipe bodies 1 is at least two, and at least two pipe bodies 1 are inserted in sequence; the pipe body 1 also includes a spigot end 13, and the spigot end 13 is located on the pipe body 1 along the first direction away from the socket. One end of end 11; among the two plugged pipe bodies 1, the socket end 13 of one pipe body 1 is inserted into the socket end 11 of the other pipe body 1, and the inner side of the sealing ring 2 of the socket end 11 is in contact with the socket end 13 The outside of the contact.

When multiple pipe bodies 1 are inserted in sequence, one end of the pipe body 1 is the socket end 11 and the other end is the socket end 13 . Among the two inserted pipe bodies 1, the socket end 13 of one is inserted into the socket end 11 of the other. At this time, the sealing body 21 of the sealing ring 2 is in contact with the outer wall surface of the socket end 13, thus realizing the two pipe bodies. 1 seal between. When the two pipe bodies 1 are inserted into place, the sealing ring 2 is in a compressed state, and the sealing body 21 exerts pressure on the outer wall surface of the socket end 13 to achieve sealing between the sealing ring 2 and the outer wall surface of the socket end 13 . For example, the entire pipe body 1 of the concrete pipe may be a curved pipe or a straight pipe. When the pipe body 1 is a bent pipe, the parts where the socket end 11 and the spigot end 13 are connected are both straight pipes.

The outside of the socket end 13 is provided with a chamfer structure, so that there are no obvious edges and corners on the outside of the socket end 13 . When the socket end 13 and the socket end 11 are inserted into place, the sealing ring 2 will be pressed tightly by the socket end 13 and the socket end 11. Therefore, when the socket end 13 is inserted into the socket end 11, the outside of the socket end 13 The edge will slide over part of the surface of the sealing body 21 . The chamfering structure can reduce the risk of scratching the surface of the sealing body 21 by the outer edge of the spigot tube, and has a guiding function so that the sealing body 21 has good sealing performance. The diameter of the end edge of the socket end 13 after chamfering should be less than or equal to the inner diameter of the sealing ring 2 .

Example 2

Continuing to refer to Figures 2 and 3, combined with Figure 6, the sealing ring 2 provided by the embodiment of the present application is used for the concrete pipe in Embodiment 1 of the present application.

The embodiment of the present application provides a sealing ring 2, which includes: a sealing body 21, at least part of the sealing body 21 extending outward along the radial direction of the sealing ring 2; a positioning portion 22 connected with the sealing body 21 along the axial direction of the sealing ring 2 Connection, at least part of the positioning part 22 extends outward along the radial direction of the seal ring 2; the inner diameter of the positioning part 22 is smaller than the inner diameter of the sealing body 21; the annular skeleton 23 is located in the positioning part 22.

When using the sealing ring 2 of the embodiment of the present application, the sealing ring 2 is installed inside the socket end 11 of the pipe body 1 of the concrete pipe, and then the socket end 13 of the other pipe body 1 is inserted. Ring 2 to achieve sealing between the two pipe bodies 1.

The sealing body 21 is used to achieve the sealing effect of the sealing ring 2 and extends along the radial direction of the sealing ring 2 to enable the sealing ring 2 to couple with the sealing groove 121 of the socket end 11 of the pipe body 1 to achieve the purpose of sealing. The positioning portion 22 is used to fix the position of the sealing ring 2 relative to the socket end 11 and extends along the radial direction of the sealing ring 2, which can reduce the possibility of the sealing ring 2 rolling or sliding relative to the socket end 11, thereby enhancing the sealing effect. The annular skeleton 23 can support the sealing ring 2 and reduce the possibility of the positioning part 22 detaching from the positioning groove 122. At the same time, under the action of the outward tension of the skeleton 23, there is a radial outward force on the positioning part 22. The positioning part 22 is pressed into the positioning groove 122 to further enhance the sealing effect.

Further, continuing to refer to FIG. 6 , a tapered structure is provided on the inner side of the sealing ring 2 . Along the axial direction of the sealing ring 2 , the inner diameter of the tapered structure gradually increases. The tapered structure on the inside of the sealing ring 2 can play an alignment role. When the socket end 13 is inserted into the socket end 11, the socket end 13 will be inserted into the socket end 11 under the guidance of the tapered side of the tapered structure. At this time, the axis of the socket end 13 is in line with the axis of the socket end 11. The axes coincide to achieve the purpose of alignment and reduce the difference in force received by the sealing ring 2 at various positions in the circumferential direction of the sealing ring 2, thereby reducing the possibility of the sealing ring 2 failing due to uneven stress.

Further, continuing to refer to FIG. 6 , along the axial direction of the seal ring 2 , from the positioning portion 22 to the seal body 21 , the inner diameter of the tapered structure gradually decreases. When the socket end 13 and the socket end 11 are inserted, the sealing ring 2 is subjected to the torque generated by the joint action of the socket end 13 and the socket end 11, and there is a risk of rolling. The positioning part 22 is arranged on the side with a larger inner diameter of the tapered structure, and the positioning part 22 and the socket end 11 The positioning grooves 122 interact to generate a moment that hinders the rotation of the sealing ring 2. Therefore, the risk of the sealing ring 2 rolling relative to the socket end 11 can be reduced and the sealing effect can be improved.

Furthermore, the diameter of the skeleton 23 in the positioning part 22 of the sealing ring 2 is larger than the minimum diameter of the lining plate 12. The radial outward tension of the rigid skeleton 23 realizes that the positioning part 22 is effectively fixed to the sealing ring 2 in the positioning groove 122. Effectively resist axial thrust during the mating process.

Further, continuing to refer to FIG. 6 , the cross-sectional shape of the sealing body 21 includes a first side 211 , a second side 212 and a third side 213 extending in the radial direction of the sealing ring 2 . The second side 212 , the first side 211 and The third sides 213 are connected in sequence, and the first side 211 is a convex curve; the diameters of the sealing body 21 corresponding to the second side 212 and the third side 213 are both smaller than the diameter of the sealing body 21 corresponding to the first side 211 . The second side 212 , the first side 211 and the third side 213 are connected in sequence and correspond to a part of the cross-sectional shape of the sealing body 21 . On the sealing body 21 , the corresponding portions of the second side 212 , the first side 211 and the third side 213 are coupled with the sealing groove 121 of the socket end 11 . The diameters of the sealing body 21 corresponding to the second side 212 and the third side 213 are both smaller than the diameter of the sealing body 21 corresponding to the first side 211. The corresponding parts of the second side 212 and the third side 213 ensure that the sealing body 21 can move along the sealing body 21. The sealing ring 2 extends radially outward. The first side 211 is a convex curve, for example, it can be a circular arc or an elliptical arc, so that the sealing body 21 can couple with the sealing groove 121 of the socket end 11 under a certain external force. Although the first side 211 is a convex curve, after the socket end 13 and the socket end 11 are inserted, the sealing body 21 is extruded and deformed, and the corresponding part of the first side 211 can be relatively tightly coupled with the sealing groove 121. Ensure sealing effect.

Further, continuing to refer to Figure 6, the cross-sectional shape of the positioning portion 22 includes a fourth side 221, a fifth side 222 and a sixth side 223 extending in the radial direction of the sealing right. The six sides 223 are connected in sequence, and the fourth side 221 is a convex curve. The fifth side 222 , the fourth side 221 and the sixth side 223 are connected in sequence and correspond to a part of the cross-sectional shape of the positioning part 22 . On the positioning portion 22 , the distance between the fifth side 222 and the sixth side 223 is greater than the width of the portion and the bottom of the positioning groove 122 . After the sealing ring 2 is installed into the lining plate 12 of the socket end 11, the positioning portion 22 is squeezed into the positioning groove 122 under the outward tension of the frame 23. The fourth side 221 is a convex curve, for example, it can be a circular arc or an elliptical arc, so that the positioning portion 22 can fit with the positioning groove 122 of the socket end 11 under the radial outward tension of the frame 23, This further enhances the sealing effect.

Further, continuing to refer to FIG. 6 , the frame 23 is located in the area formed by the positioning portion 22 corresponding to the fifth side 222 , the fourth side 221 and the sixth side 223 . After the socket end 13 is inserted into the socket end 11 , the positioning portion 22 is coupled with the positioning groove 122 , and the area formed by the positioning portion 22 corresponding to the fifth side 222 , the fourth side 221 and the sixth side 223 is located in the positioning groove 122 . Therefore, the skeleton 23 is located in the space formed by the positioning groove 122 , thereby reducing the possibility that the positioning part 22 is detached from the positioning groove 122 , making it difficult for the sealing ring 2 to roll or slide relative to the socket end 11 .

Further, continuing to refer to FIG. 6 , along the axial direction of the sealing ring 2 , between the positioning part 22 and the sealing body 21 , there is a recessed part 24 radially inward along the sealing ring 2 . The cross-sectional shape of the sealing body 21 also includes a seventh side 241, the third side 213, the seventh side 241 and the fifth side 222 are connected in sequence, and the third side 213, the seventh side 241 and the fifth side 222 are connected with the recessed portion 24 corresponding to the cross-sectional shape. The recessed portion 24 can be coupled with the convex portion of the socket end 11 to further reduce the possibility of the sealing ring 2 sliding relative to the lining plate 12 . In addition, when the socket end 13 is inserted into the socket end 11 , the protruding portion and the recessed portion 24 are coupled, so that the lining plate 12 can exert a torque in the opposite direction on the sealing ring 2 and lower the sealing ring 2 relative to the lining plate 12 The possibility of rolling reduces the risk of seal failure caused by the separation of the sealing ring 2 from the sealing groove 121 . The seventh side 241 is used to connect the third side 213 and the fifth side 222 to form a concave shape. The third side 213 , the seventh side 241 and the fifth side 222 correspond to the recessed portion 24 .

Furthermore, the minimum outer diameter of the recessed portion 24 is smaller than the diameter of the frame 23 so that the frame 23 can be located within the positioning groove 122 of the socket end 11 . When the sealing ring 2 tends to move relative to the socket end 11 , the convex portion of the socket end 11 can block the frame 23 by exerting reverse thrust, thereby preventing the sealing ring 2 from moving relative to the socket end 11 .

Furthermore, the cross-sectional shape of the sealing body 21 also includes an eighth side 214, and the sixth side 223, the eighth side 214 and the second side 212 are connected in sequence; the eighth side 214 corresponds to the inner side of the tapered structure. The second side 212, the first side 211, the third side 213, the seventh side 241, the fifth side 222, the fourth side 221, the sixth side 223, and the eighth side 214 are connected end to end in order to form the horizontal direction of the sealing ring 2. Cross-sectional shape. When the insertion object is inserted into the socket end 11, the eighth side 214 will generate friction with the insertion object, causing the sealing ring 2 to deform, so that the sealing ring 2 exerts pressure on the socket end 11 and the insertion object at the same time. Ensure good sealing effect. When the plugged object tends to come out of the socket end 11 , the reverse friction between the eighth side 214 and the plugged object can cause the sealing ring 2 to recover. This will further increase the pressure of the sealing ring 2 on the socket end 11 and the plug-in object, thereby generating greater friction and achieving stop and self-locking.

Further, continuing to refer to FIG. 6 , the skeleton 23 exerts an outward force along the radial direction of the seal ring 2 on the positioning part 22 . Since the skeleton 23 is located in the space formed by the positioning groove 122 , the tension of the skeleton 23 itself can hinder the positioning part. 22 is separated from the positioning groove 122, thereby reducing the possibility of the sealing ring 2 sliding or rolling relative to the liner 12, thereby enhancing the sealing effect.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of various equivalent methods within the technical scope disclosed in the present application. Modification or replacement, these modifications or replacements shall be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A sealing ring including:

a sealing body, at least part of which extends outward along the radial direction of the sealing ring;

The positioning part is connected to the seal body along the axial direction of the seal ring, and at least part of the positioning part extends outward along the radial direction of the seal ring;

An annular skeleton is located in the positioning part.
The sealing ring according to claim 1, wherein a conical structure is provided on the inner side of the sealing ring, and the inner diameter of the conical structure gradually increases along the axial direction of the sealing ring.
The sealing ring according to claim 2, wherein the inner diameter of the tapered structure gradually decreases along the axial direction of the sealing ring from the positioning portion to the sealing body.
The sealing ring according to claim 2, wherein the cross-sectional shape of the sealing body includes a first side, a second side and a third side extending in a radial direction of the sealing ring, the second side, the The first side and the third side are connected in sequence, and the first side is a convex curve; the diameter of the seal body corresponding to the second side and the diameter corresponding to the third side is smaller than that of the seal The body corresponds to the diameter at the first side.
The sealing ring according to claim 4, wherein the cross-sectional shape of the positioning portion includes a fourth side, a fifth side and a sixth side extending in a radial direction of the sealing ring, the fifth side, the The fourth side and the sixth side are connected in sequence, and the fourth side is a convex curve;

The diameter of the positioning portion corresponding to the fifth side and the diameter corresponding to the sixth side are both smaller than the diameter of the sealing body corresponding to the fourth side.
The sealing ring according to claim 5, wherein the skeleton is located in a region formed by the positioning portion corresponding to the fifth side, the fourth side and the sixth side.
The sealing ring according to claim 5, wherein the cross-sectional shape of the sealing body further includes a seventh side, and the third side, the seventh side and the fifth side are connected in sequence.
The sealing ring according to claim 7, wherein along the axial direction of the sealing ring, between the positioning portion and the sealing body, there is a recessed portion along the radial direction of the sealing ring inward; The third side, the seventh side and the fifth side correspond to the cross-sectional shape of the recessed portion.
The sealing ring according to claim 8, wherein the minimum outer diameter of the recessed portion is smaller than the diameter of the skeleton.
The sealing ring according to claim 7, wherein the cross-sectional shape of the sealing body further includes an eighth side, and the sixth side, the eighth side and the second side are connected in sequence; The eight sides correspond to the inner side of the conical structure.
The sealing ring according to claim 10, wherein the sealing ring is used for plug-in sealing between the socket end and the socket end of the concrete pipe, and the inner diameter of at least part of the surface corresponding to the eighth side is smaller than the outer diameter of the socket end. path.
The sealing ring according to claim 1, wherein the skeleton exerts a radially outward force on the positioning portion along the sealing ring.